diff --git a/.editorconfig b/.editorconfig index 541fc2d2be..ab5fd231ef 100644 --- a/.editorconfig +++ b/.editorconfig @@ -10,3 +10,7 @@ charset = utf-8 end_of_line = lf trim_trailing_whitespace = true insert_final_newline = true + +[package.json] +indent_style = space +tab_width = 2 diff --git a/.eslintrc.js b/.eslintrc.js index 4a0a88f149..60f819d770 100644 --- a/.eslintrc.js +++ b/.eslintrc.js @@ -1,5 +1,5 @@ /** - * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved. + * @license Copyright (c) 2003-2020, CKSource - Frederico Knabben. All rights reserved. * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license */ diff --git a/.stylelintrc b/.stylelintrc new file mode 100644 index 0000000000..1d86a41f98 --- /dev/null +++ b/.stylelintrc @@ -0,0 +1,3 @@ +{ + "extends": "stylelint-config-ckeditor5" +} diff --git a/CHANGELOG.md b/CHANGELOG.md index c68122228c..d947a3e457 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -1,6 +1,167 @@ Changelog ========= +## [18.0.0](https://github.com/ckeditor/ckeditor5-build-classic/compare/v17.0.0...v18.0.0) (2020-03-19) + +We are happy to announce the release of CKEditor 5 v18.0.0. + +Refer to the [main changelog](https://github.com/ckeditor/ckeditor5/releases/tag/v18.0.0) to find out about all the new features, improvements and possible breaking changes. + +Blog post coming soon... + +### Features + +Besides new features introduced by the dependencies, this version also introduces the following features: + +* Added the [Automatic text transformation](https://ckeditor.com/docs/ckeditor5/latest/features/text-transformation.html) feature to the build. See [ckeditor/ckeditor5#6304](https://github.com/ckeditor/ckeditor5/issues/6304). ([af021aa](https://github.com/ckeditor/ckeditor5-build-classic/commit/af021aa)) + +### Dependencies + +Major releases (contain major breaking changes): + +* [@ckeditor/ckeditor5-engine](https://www.npmjs.com/package/@ckeditor/ckeditor5-engine): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-engine/releases/tag/v18.0.0) +* [@ckeditor/ckeditor5-ui](https://www.npmjs.com/package/@ckeditor/ckeditor5-ui): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-ui/releases/tag/v18.0.0) + +Major releases (contain minor breaking changes): + +* [@ckeditor/ckeditor5-engine](https://www.npmjs.com/package/@ckeditor/ckeditor5-engine): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-engine/releases/tag/v18.0.0) + +Major releases (dependencies of those packages have breaking changes): + +* [@ckeditor/ckeditor-cloud-services-core](https://www.npmjs.com/package/@ckeditor/ckeditor-cloud-services-core): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor-cloud-services-core/releases/tag/v18.0.0) +* [@ckeditor/ckeditor5-adapter-ckfinder](https://www.npmjs.com/package/@ckeditor/ckeditor5-adapter-ckfinder): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-adapter-ckfinder/releases/tag/v18.0.0) +* [@ckeditor/ckeditor5-autoformat](https://www.npmjs.com/package/@ckeditor/ckeditor5-autoformat): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-autoformat/releases/tag/v18.0.0) +* [@ckeditor/ckeditor5-basic-styles](https://www.npmjs.com/package/@ckeditor/ckeditor5-basic-styles): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-basic-styles/releases/tag/v18.0.0) +* [@ckeditor/ckeditor5-block-quote](https://www.npmjs.com/package/@ckeditor/ckeditor5-block-quote): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-block-quote/releases/tag/v18.0.0) +* [@ckeditor/ckeditor5-ckfinder](https://www.npmjs.com/package/@ckeditor/ckeditor5-ckfinder): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-ckfinder/releases/tag/v18.0.0) +* [@ckeditor/ckeditor5-clipboard](https://www.npmjs.com/package/@ckeditor/ckeditor5-clipboard): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-clipboard/releases/tag/v18.0.0) +* [@ckeditor/ckeditor5-cloud-services](https://www.npmjs.com/package/@ckeditor/ckeditor5-cloud-services): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-cloud-services/releases/tag/v18.0.0) +* [@ckeditor/ckeditor5-core](https://www.npmjs.com/package/@ckeditor/ckeditor5-core): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-core/releases/tag/v18.0.0) +* [@ckeditor/ckeditor5-easy-image](https://www.npmjs.com/package/@ckeditor/ckeditor5-easy-image): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-easy-image/releases/tag/v18.0.0) +* [@ckeditor/ckeditor5-editor-classic](https://www.npmjs.com/package/@ckeditor/ckeditor5-editor-classic): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-editor-classic/releases/tag/v18.0.0) +* [@ckeditor/ckeditor5-enter](https://www.npmjs.com/package/@ckeditor/ckeditor5-enter): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-enter/releases/tag/v18.0.0) +* [@ckeditor/ckeditor5-essentials](https://www.npmjs.com/package/@ckeditor/ckeditor5-essentials): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-essentials/releases/tag/v18.0.0) +* [@ckeditor/ckeditor5-heading](https://www.npmjs.com/package/@ckeditor/ckeditor5-heading): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-heading/releases/tag/v18.0.0) +* [@ckeditor/ckeditor5-image](https://www.npmjs.com/package/@ckeditor/ckeditor5-image): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-image/releases/tag/v18.0.0) +* [@ckeditor/ckeditor5-indent](https://www.npmjs.com/package/@ckeditor/ckeditor5-indent): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-indent/releases/tag/v18.0.0) +* [@ckeditor/ckeditor5-link](https://www.npmjs.com/package/@ckeditor/ckeditor5-link): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-link/releases/tag/v18.0.0) +* [@ckeditor/ckeditor5-list](https://www.npmjs.com/package/@ckeditor/ckeditor5-list): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-list/releases/tag/v18.0.0) +* [@ckeditor/ckeditor5-media-embed](https://www.npmjs.com/package/@ckeditor/ckeditor5-media-embed): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-media-embed/releases/tag/v18.0.0) +* [@ckeditor/ckeditor5-paragraph](https://www.npmjs.com/package/@ckeditor/ckeditor5-paragraph): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-paragraph/releases/tag/v18.0.0) +* [@ckeditor/ckeditor5-paste-from-office](https://www.npmjs.com/package/@ckeditor/ckeditor5-paste-from-office): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-paste-from-office/releases/tag/v18.0.0) +* [@ckeditor/ckeditor5-table](https://www.npmjs.com/package/@ckeditor/ckeditor5-table): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-table/releases/tag/v18.0.0) +* [@ckeditor/ckeditor5-theme-lark](https://www.npmjs.com/package/@ckeditor/ckeditor5-theme-lark): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-theme-lark/releases/tag/v18.0.0) +* [@ckeditor/ckeditor5-typing](https://www.npmjs.com/package/@ckeditor/ckeditor5-typing): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-typing/releases/tag/v18.0.0) +* [@ckeditor/ckeditor5-undo](https://www.npmjs.com/package/@ckeditor/ckeditor5-undo): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-undo/releases/tag/v18.0.0) +* [@ckeditor/ckeditor5-upload](https://www.npmjs.com/package/@ckeditor/ckeditor5-upload): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-upload/releases/tag/v18.0.0) +* [@ckeditor/ckeditor5-utils](https://www.npmjs.com/package/@ckeditor/ckeditor5-utils): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-utils/releases/tag/v18.0.0) +* [@ckeditor/ckeditor5-widget](https://www.npmjs.com/package/@ckeditor/ckeditor5-widget): v17.0.0 => [v18.0.0](https://github.com/ckeditor/ckeditor5-widget/releases/tag/v18.0.0) + + +## [17.0.0](https://github.com/ckeditor/ckeditor5-build-classic/compare/v16.0.0...v17.0.0) (2020-02-19) + +We are happy to announce the release of CKEditor 5 v17.0.0. + +Refer to the [main changelog](https://github.com/ckeditor/ckeditor5/releases/tag/v17.0.0) to find out about all the new features, improvements and possible breaking changes. + +https://ckeditor.com/blog/CKEditor-5-v17.0.0-with-table-styles-special-characters-and-performance-improvements/ + +### Dependencies + +Major releases (contain major breaking changes): + +* [@ckeditor/ckeditor5-theme-lark](https://www.npmjs.com/package/@ckeditor/ckeditor5-theme-lark): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor5-theme-lark/releases/tag/v17.0.0) + +Major releases (contain minor breaking changes): + +* [@ckeditor/ckeditor5-image](https://www.npmjs.com/package/@ckeditor/ckeditor5-image): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor5-image/releases/tag/v17.0.0) +* [@ckeditor/ckeditor5-utils](https://www.npmjs.com/package/@ckeditor/ckeditor5-utils): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor5-utils/releases/tag/v17.0.0) +* [@ckeditor/ckeditor5-widget](https://www.npmjs.com/package/@ckeditor/ckeditor5-widget): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor5-widget/releases/tag/v17.0.0) + +Releases containing new features: + +* [@ckeditor/ckeditor5-engine](https://www.npmjs.com/package/@ckeditor/ckeditor5-engine): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor5-engine/releases/tag/v17.0.0) +* [@ckeditor/ckeditor5-table](https://www.npmjs.com/package/@ckeditor/ckeditor5-table): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor5-table/releases/tag/v17.0.0) +* [@ckeditor/ckeditor5-typing](https://www.npmjs.com/package/@ckeditor/ckeditor5-typing): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor5-typing/releases/tag/v17.0.0) +* [@ckeditor/ckeditor5-ui](https://www.npmjs.com/package/@ckeditor/ckeditor5-ui): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor5-ui/releases/tag/v17.0.0) + +Major releases (dependencies of those packages have breaking changes): + +* [@ckeditor/ckeditor-cloud-services-core](https://www.npmjs.com/package/@ckeditor/ckeditor-cloud-services-core): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor-cloud-services-core/releases/tag/v17.0.0) +* [@ckeditor/ckeditor5-adapter-ckfinder](https://www.npmjs.com/package/@ckeditor/ckeditor5-adapter-ckfinder): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor5-adapter-ckfinder/releases/tag/v17.0.0) +* [@ckeditor/ckeditor5-autoformat](https://www.npmjs.com/package/@ckeditor/ckeditor5-autoformat): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor5-autoformat/releases/tag/v17.0.0) +* [@ckeditor/ckeditor5-basic-styles](https://www.npmjs.com/package/@ckeditor/ckeditor5-basic-styles): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor5-basic-styles/releases/tag/v17.0.0) +* [@ckeditor/ckeditor5-block-quote](https://www.npmjs.com/package/@ckeditor/ckeditor5-block-quote): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor5-block-quote/releases/tag/v17.0.0) +* [@ckeditor/ckeditor5-ckfinder](https://www.npmjs.com/package/@ckeditor/ckeditor5-ckfinder): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor5-ckfinder/releases/tag/v17.0.0) +* [@ckeditor/ckeditor5-clipboard](https://www.npmjs.com/package/@ckeditor/ckeditor5-clipboard): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor5-clipboard/releases/tag/v17.0.0) +* [@ckeditor/ckeditor5-cloud-services](https://www.npmjs.com/package/@ckeditor/ckeditor5-cloud-services): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor5-cloud-services/releases/tag/v17.0.0) +* [@ckeditor/ckeditor5-core](https://www.npmjs.com/package/@ckeditor/ckeditor5-core): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor5-core/releases/tag/v17.0.0) +* [@ckeditor/ckeditor5-easy-image](https://www.npmjs.com/package/@ckeditor/ckeditor5-easy-image): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor5-easy-image/releases/tag/v17.0.0) +* [@ckeditor/ckeditor5-editor-classic](https://www.npmjs.com/package/@ckeditor/ckeditor5-editor-classic): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor5-editor-classic/releases/tag/v17.0.0) +* [@ckeditor/ckeditor5-enter](https://www.npmjs.com/package/@ckeditor/ckeditor5-enter): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor5-enter/releases/tag/v17.0.0) +* [@ckeditor/ckeditor5-essentials](https://www.npmjs.com/package/@ckeditor/ckeditor5-essentials): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor5-essentials/releases/tag/v17.0.0) +* [@ckeditor/ckeditor5-heading](https://www.npmjs.com/package/@ckeditor/ckeditor5-heading): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor5-heading/releases/tag/v17.0.0) +* [@ckeditor/ckeditor5-indent](https://www.npmjs.com/package/@ckeditor/ckeditor5-indent): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor5-indent/releases/tag/v17.0.0) +* [@ckeditor/ckeditor5-link](https://www.npmjs.com/package/@ckeditor/ckeditor5-link): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor5-link/releases/tag/v17.0.0) +* [@ckeditor/ckeditor5-list](https://www.npmjs.com/package/@ckeditor/ckeditor5-list): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor5-list/releases/tag/v17.0.0) +* [@ckeditor/ckeditor5-media-embed](https://www.npmjs.com/package/@ckeditor/ckeditor5-media-embed): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor5-media-embed/releases/tag/v17.0.0) +* [@ckeditor/ckeditor5-paragraph](https://www.npmjs.com/package/@ckeditor/ckeditor5-paragraph): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor5-paragraph/releases/tag/v17.0.0) +* [@ckeditor/ckeditor5-paste-from-office](https://www.npmjs.com/package/@ckeditor/ckeditor5-paste-from-office): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor5-paste-from-office/releases/tag/v17.0.0) +* [@ckeditor/ckeditor5-undo](https://www.npmjs.com/package/@ckeditor/ckeditor5-undo): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor5-undo/releases/tag/v17.0.0) +* [@ckeditor/ckeditor5-upload](https://www.npmjs.com/package/@ckeditor/ckeditor5-upload): v16.0.0 => [v17.0.0](https://github.com/ckeditor/ckeditor5-upload/releases/tag/v17.0.0) + + +## [16.0.0](https://github.com/ckeditor/ckeditor5-build-classic/compare/v15.0.0...v16.0.0) (2019-12-04) + +We are happy to announce the release of CKEditor 5 v16.0.0. This release introduces one of the most community-requested features: [code blocks](https://ckeditor.com/docs/ckeditor5/latest/features/code-blocks.html). We included a new [restricted editing](https://ckeditor.com/docs/ckeditor5/latest/features/restricted-editing.html) plugin, too. + +We also did some changes in the default UI colors to improve accessibility. In addition to that, as always, the release contains many [more improvements and bug fixes](https://github.com/ckeditor/ckeditor5/issues?q=is%3Aissue+milestone%3A%22iteration+28%22+is%3Aclosed+-label%3Atype%3Adocs+-label%3Atype%3Atask+-label%3Apackage%3Arestricted-editing+-label%3Apackage%3Acode-block+-label%3Atype%3Afeature). + +Read more in the blog post: https://ckeditor.com/blog/CKEditor-5-v16.0.0-with-code-blocks-and-restricted-editing/ + +### Other changes + +* Replaced UglifyJS with Terser. See [ckeditor/ckeditor5#1353](https://github.com/ckeditor/ckeditor5/issues/1353). ([6d387bd](https://github.com/ckeditor/ckeditor5-build-classic/commit/6d387bd)) + +### Dependencies + +Major releases (contain major breaking changes): + +* [@ckeditor/ckeditor5-theme-lark](https://www.npmjs.com/package/@ckeditor/ckeditor5-theme-lark): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor5-theme-lark/releases/tag/v16.0.0) + +Major releases (dependencies of those packages have breaking changes): + +* [@ckeditor/ckeditor-cloud-services-core](https://www.npmjs.com/package/@ckeditor/ckeditor-cloud-services-core): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor-cloud-services-core/releases/tag/v16.0.0) +* [@ckeditor/ckeditor5-adapter-ckfinder](https://www.npmjs.com/package/@ckeditor/ckeditor5-adapter-ckfinder): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor5-adapter-ckfinder/releases/tag/v16.0.0) +* [@ckeditor/ckeditor5-autoformat](https://www.npmjs.com/package/@ckeditor/ckeditor5-autoformat): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor5-autoformat/releases/tag/v16.0.0) +* [@ckeditor/ckeditor5-basic-styles](https://www.npmjs.com/package/@ckeditor/ckeditor5-basic-styles): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor5-basic-styles/releases/tag/v16.0.0) +* [@ckeditor/ckeditor5-block-quote](https://www.npmjs.com/package/@ckeditor/ckeditor5-block-quote): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor5-block-quote/releases/tag/v16.0.0) +* [@ckeditor/ckeditor5-ckfinder](https://www.npmjs.com/package/@ckeditor/ckeditor5-ckfinder): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor5-ckfinder/releases/tag/v16.0.0) +* [@ckeditor/ckeditor5-clipboard](https://www.npmjs.com/package/@ckeditor/ckeditor5-clipboard): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor5-clipboard/releases/tag/v16.0.0) +* [@ckeditor/ckeditor5-cloud-services](https://www.npmjs.com/package/@ckeditor/ckeditor5-cloud-services): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor5-cloud-services/releases/tag/v16.0.0) +* [@ckeditor/ckeditor5-core](https://www.npmjs.com/package/@ckeditor/ckeditor5-core): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor5-core/releases/tag/v16.0.0) +* [@ckeditor/ckeditor5-easy-image](https://www.npmjs.com/package/@ckeditor/ckeditor5-easy-image): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor5-easy-image/releases/tag/v16.0.0) +* [@ckeditor/ckeditor5-editor-classic](https://www.npmjs.com/package/@ckeditor/ckeditor5-editor-classic): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor5-editor-classic/releases/tag/v16.0.0) +* [@ckeditor/ckeditor5-engine](https://www.npmjs.com/package/@ckeditor/ckeditor5-engine): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor5-engine/releases/tag/v16.0.0) +* [@ckeditor/ckeditor5-enter](https://www.npmjs.com/package/@ckeditor/ckeditor5-enter): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor5-enter/releases/tag/v16.0.0) +* [@ckeditor/ckeditor5-essentials](https://www.npmjs.com/package/@ckeditor/ckeditor5-essentials): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor5-essentials/releases/tag/v16.0.0) +* [@ckeditor/ckeditor5-heading](https://www.npmjs.com/package/@ckeditor/ckeditor5-heading): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor5-heading/releases/tag/v16.0.0) +* [@ckeditor/ckeditor5-image](https://www.npmjs.com/package/@ckeditor/ckeditor5-image): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor5-image/releases/tag/v16.0.0) +* [@ckeditor/ckeditor5-indent](https://www.npmjs.com/package/@ckeditor/ckeditor5-indent): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor5-indent/releases/tag/v16.0.0) +* [@ckeditor/ckeditor5-link](https://www.npmjs.com/package/@ckeditor/ckeditor5-link): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor5-link/releases/tag/v16.0.0) +* [@ckeditor/ckeditor5-list](https://www.npmjs.com/package/@ckeditor/ckeditor5-list): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor5-list/releases/tag/v16.0.0) +* [@ckeditor/ckeditor5-media-embed](https://www.npmjs.com/package/@ckeditor/ckeditor5-media-embed): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor5-media-embed/releases/tag/v16.0.0) +* [@ckeditor/ckeditor5-paragraph](https://www.npmjs.com/package/@ckeditor/ckeditor5-paragraph): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor5-paragraph/releases/tag/v16.0.0) +* [@ckeditor/ckeditor5-paste-from-office](https://www.npmjs.com/package/@ckeditor/ckeditor5-paste-from-office): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor5-paste-from-office/releases/tag/v16.0.0) +* [@ckeditor/ckeditor5-table](https://www.npmjs.com/package/@ckeditor/ckeditor5-table): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor5-table/releases/tag/v16.0.0) +* [@ckeditor/ckeditor5-typing](https://www.npmjs.com/package/@ckeditor/ckeditor5-typing): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor5-typing/releases/tag/v16.0.0) +* [@ckeditor/ckeditor5-ui](https://www.npmjs.com/package/@ckeditor/ckeditor5-ui): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor5-ui/releases/tag/v16.0.0) +* [@ckeditor/ckeditor5-undo](https://www.npmjs.com/package/@ckeditor/ckeditor5-undo): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor5-undo/releases/tag/v16.0.0) +* [@ckeditor/ckeditor5-upload](https://www.npmjs.com/package/@ckeditor/ckeditor5-upload): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor5-upload/releases/tag/v16.0.0) +* [@ckeditor/ckeditor5-utils](https://www.npmjs.com/package/@ckeditor/ckeditor5-utils): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor5-utils/releases/tag/v16.0.0) +* [@ckeditor/ckeditor5-widget](https://www.npmjs.com/package/@ckeditor/ckeditor5-widget): v15.0.0 => [v16.0.0](https://github.com/ckeditor/ckeditor5-widget/releases/tag/v16.0.0) + + ## [15.0.0](https://github.com/ckeditor/ckeditor5-build-classic/compare/v12.4.0...v15.0.0) (2019-10-23) We are happy to announce the release of CKEditor 5 v15.0.0. This editor version introduces support for inserting [horizontal lines](https://ckeditor.com/docs/ckeditor5/latest/features/horizontal-line.html), [page breaks](https://ckeditor.com/docs/ckeditor5/latest/features/page-break.html) and [SVG images](https://ckeditor.com/docs/ckeditor5/latest/api/module_image_imageupload-ImageUploadConfig.html#member-types) into the WYSIWYG editor. It also allows you to define the [document title section](https://ckeditor.com/docs/ckeditor5/latest/features/title.html) thanks to the new title plugin. The editor toolbar is now responsive which improves the UX, especially for mobile devices. @@ -9,7 +170,7 @@ Regarding the build itself, we added the [list indentation](https://ckeditor.com From other news, we changed the versioning policy. Now, all packages will have the same major version, hence, we needed to release this one as v15.0.0 (we skipped versions 13.0.0 and 14.0.0). Read more about the [new versioning policy](https://ckeditor.com/docs/ckeditor5/latest/framework/guides/support/versioning-policy.html). -Blog post coming soon... +Read more in the blog post: https://ckeditor.com/blog/CKEditor-5-v15.0.0-with-horizontal-line-page-break-responsive-toolbar-and-SVG-upload-support/ ### Dependencies @@ -430,7 +591,7 @@ This is a major releases that introduces many smaller features, dozens of bug fi If you maintain a [custom build of CKEditor 5](https://ckeditor.com/docs/ckeditor5/latest/builds/guides/development/custom-builds.html) or [integrate CKEditor 5 from source](https://ckeditor.com/docs/ckeditor5/latest/builds/guides/integration/advanced-setup.html#scenario-2-building-from-source), we recommend reading the [migration guide](https://github.com/ckeditor/ckeditor5/issues/1136). -Blog post is coming soon... +Read more in the blog post: https://ckeditor.com/blog/CKEditor-5-v11.0.0-released/ ### Dependencies diff --git a/LICENSE.md b/LICENSE.md index ccfcb5e2b5..a0fea50334 100644 --- a/LICENSE.md +++ b/LICENSE.md @@ -2,7 +2,7 @@ Software License Agreement ========================== **CKEditor 5 classic editor build** – https://github.com/ckeditor/ckeditor5-build-classic
-Copyright (c) 2003-2019, [CKSource](http://cksource.com) Frederico Knabben. All rights reserved. +Copyright (c) 2003-2020, [CKSource](http://cksource.com) Frederico Knabben. All rights reserved. Licensed under the terms of [GNU General Public License Version 2 or later](http://www.gnu.org/licenses/gpl.html). diff --git a/README.md b/README.md index 5d2ee62455..60777490df 100644 --- a/README.md +++ b/README.md @@ -41,8 +41,8 @@ And use it in your website: .then( editor => { window.editor = editor; } ) - .catch( err => { - console.error( err.stack ); + .catch( error => { + console.error( 'There was a problem initializing the editor.', error ); } ); ``` @@ -60,8 +60,8 @@ ClassicEditor .then( editor => { window.editor = editor; } ) - .catch( err => { - console.error( err.stack ); + .catch( error => { + console.error( 'There was a problem initializing the editor.', error ); } ); ``` diff --git a/build/ckeditor.js b/build/ckeditor.js index 486093a242..2d32de25ae 100644 --- a/build/ckeditor.js +++ b/build/ckeditor.js @@ -1,6 +1,6 @@ /*! - * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved. + * @license Copyright (c) 2003-2020, CKSource - Frederico Knabben. All rights reserved. * For licensing, see LICENSE.md. */ -!function(t){t.en=Object.assign(t.en||{},{a:"Cannot upload file:",b:"Image toolbar",c:"Table toolbar",d:"Bold",e:"Insert image or file",f:"Choose heading",g:"Heading",h:"Full size image",i:"Side image",j:"Left aligned image",k:"Centered image",l:"Right aligned image",m:"image widget",n:"Block quote",o:"Numbered List",p:"Bulleted List",q:"Increase indent",r:"Decrease indent",s:"Insert image",t:"Insert table",u:"Header column",v:"Insert column left",w:"Insert column right",x:"Delete column",y:"Column",z:"Header row",aa:"Insert row below",ab:"Insert row above",ac:"Delete row",ad:"Row",ae:"Merge cell up",af:"Merge cell right",ag:"Merge cell down",ah:"Merge cell left",ai:"Split cell vertically",aj:"Split cell horizontally",ak:"Merge cells",al:"Italic",am:"Insert media",an:"The URL must not be empty.",ao:"This media URL is not supported.",ap:"media widget",aq:"Upload failed",ar:"Enter image caption",as:"Link",at:"Could not obtain 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i=n(43);"string"==typeof i&&(i=[[t.i,i,""]]);var o={injectType:"singletonStyleTag",insert:"head",singleton:!0};n(1)(i,o);i.locals&&(t.exports=i.locals)},function(t,e){t.exports=".ck.ck-editor{position:relative}.ck.ck-editor .ck-editor__top .ck-sticky-panel .ck-toolbar{z-index:var(--ck-z-modal)}.ck.ck-editor__top .ck-sticky-panel .ck-toolbar{border-radius:0}.ck-rounded-corners .ck.ck-editor__top .ck-sticky-panel .ck-toolbar,.ck.ck-editor__top .ck-sticky-panel .ck-toolbar.ck-rounded-corners{border-radius:var(--ck-border-radius);border-bottom-left-radius:0;border-bottom-right-radius:0}.ck.ck-editor__top .ck-sticky-panel .ck-toolbar{border-bottom-width:0}.ck.ck-editor__top .ck-sticky-panel .ck-sticky-panel__content_sticky .ck-toolbar{border-bottom-width:1px;border-radius:0}.ck-rounded-corners .ck.ck-editor__top .ck-sticky-panel .ck-sticky-panel__content_sticky .ck-toolbar,.ck.ck-editor__top .ck-sticky-panel .ck-sticky-panel__content_sticky 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o={injectType:"singletonStyleTag",insert:"head",singleton:!0};n(1)(i,o);i.locals&&(t.exports=i.locals)},function(t,e){t.exports=".ck .ck-link_selected{background:var(--ck-color-link-selected-background)}"},function(t,e,n){var i=n(49);"string"==typeof i&&(i=[[t.i,i,""]]);var o={injectType:"singletonStyleTag",insert:"head",singleton:!0};n(1)(i,o);i.locals&&(t.exports=i.locals)},function(t,e){t.exports=":root{--ck-color-resizer:var(--ck-color-focus-border);--ck-resizer-size:10px;--ck-resizer-border-width:1px;--ck-resizer-border-radius:2px;--ck-resizer-offset:calc(var(--ck-resizer-size)/-2 - 2px);--ck-resizer-tooltip-offset:10px;--ck-color-resizer-tooltip-background:#262626;--ck-color-resizer-tooltip-text:#f2f2f2}.ck .ck-widget.ck-widget_with-selection-handle{position:relative}.ck .ck-widget.ck-widget_with-selection-handle:hover .ck-widget__selection-handle{visibility:visible}.ck .ck-widget.ck-widget_with-selection-handle .ck-widget__selection-handle{position:absolute}.ck 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var(--ck-widget-handler-animation-duration) var(--ck-widget-handler-animation-curve);border-radius:var(--ck-border-radius) var(--ck-border-radius) 0 0;transform:translateY(-100%);left:calc(0px - var(--ck-widget-outline-thickness))}.ck .ck-widget.ck-widget_with-selection-handle .ck-widget__selection-handle:hover .ck-icon .ck-icon__selected-indicator{opacity:1}.ck .ck-widget.ck-widget_with-selection-handle .ck-widget__selection-handle .ck-icon{width:var(--ck-widget-handler-icon-size);height:var(--ck-widget-handler-icon-size);color:var(--ck-color-widget-drag-handler-icon-color)}.ck .ck-widget.ck-widget_with-selection-handle .ck-widget__selection-handle .ck-icon .ck-icon__selected-indicator{opacity:0;transition:opacity .3s var(--ck-widget-handler-animation-curve)}.ck .ck-widget.ck-widget_with-selection-handle.ck-widget_selected .ck-widget__selection-handle,.ck .ck-widget.ck-widget_with-selection-handle.ck-widget_selected:hover 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i=n(59);"string"==typeof i&&(i=[[t.i,i,""]]);var o={injectType:"singletonStyleTag",insert:"head",singleton:!0};n(1)(i,o);i.locals&&(t.exports=i.locals)},function(t,e){t.exports=".ck .ck-balloon-rotator__navigation{display:flex;align-items:center;justify-content:center}.ck .ck-balloon-rotator__content .ck-toolbar{justify-content:center}.ck .ck-balloon-rotator__navigation{background:var(--ck-color-toolbar-background);border-bottom:1px solid var(--ck-color-toolbar-border);padding:0 var(--ck-spacing-small)}.ck .ck-balloon-rotator__navigation>*{margin-right:var(--ck-spacing-small);margin-top:var(--ck-spacing-small);margin-bottom:var(--ck-spacing-small)}.ck .ck-balloon-rotator__navigation .ck-balloon-rotator__counter{margin-right:var(--ck-spacing-standard);margin-left:var(--ck-spacing-small)}.ck .ck-balloon-rotator__content .ck.ck-annotation-wrapper{box-shadow:none}"},function(t,e,n){var i=n(61);"string"==typeof i&&(i=[[t.i,i,""]]);var o={injectType:"singletonStyleTag",insert:"head",singleton:!0};n(1)(i,o);i.locals&&(t.exports=i.locals)},function(t,e){t.exports=".ck .ck-fake-panel{position:absolute;z-index:calc(var(--ck-z-modal) - 1)}.ck .ck-fake-panel div{position:absolute}.ck .ck-fake-panel div:first-child{z-index:2}.ck .ck-fake-panel div:nth-child(2){z-index:1}:root{--ck-balloon-fake-panel-offset-horizontal:6px;--ck-balloon-fake-panel-offset-vertical:6px}.ck .ck-fake-panel div{box-shadow:var(--ck-drop-shadow),0 0;min-height:15px;background:var(--ck-color-panel-background);border:1px solid var(--ck-color-panel-border);border-radius:var(--ck-border-radius);width:100%;height:100%}.ck .ck-fake-panel div:first-child{margin-left:var(--ck-balloon-fake-panel-offset-horizontal);margin-top:var(--ck-balloon-fake-panel-offset-vertical)}.ck .ck-fake-panel div:nth-child(2){margin-left:calc(var(--ck-balloon-fake-panel-offset-horizontal)*2);margin-top:calc(var(--ck-balloon-fake-panel-offset-vertical)*2)}.ck .ck-fake-panel div:nth-child(3){margin-left:calc(var(--ck-balloon-fake-panel-offset-horizontal)*3);margin-top:calc(var(--ck-balloon-fake-panel-offset-vertical)*3)}.ck .ck-balloon-panel_arrow_s+.ck-fake-panel,.ck .ck-balloon-panel_arrow_se+.ck-fake-panel,.ck .ck-balloon-panel_arrow_sw+.ck-fake-panel{--ck-balloon-fake-panel-offset-vertical:-6px}"},function(t,e,n){var i=n(63);"string"==typeof i&&(i=[[t.i,i,""]]);var o={injectType:"singletonStyleTag",insert:"head",singleton:!0};n(1)(i,o);i.locals&&(t.exports=i.locals)},function(t,e){t.exports=".ck-content .image{display:table;clear:both;text-align:center;margin:1em auto}.ck-content .image>img{display:block;margin:0 auto;max-width:100%;min-width:50px}"},function(t,e,n){var i=n(65);"string"==typeof i&&(i=[[t.i,i,""]]);var o={injectType:"singletonStyleTag",insert:"head",singleton:!0};n(1)(i,o);i.locals&&(t.exports=i.locals)},function(t,e){t.exports=".ck.ck-editor__editable .image{position:relative}.ck.ck-editor__editable .image 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o={injectType:"singletonStyleTag",insert:"head",singleton:!0};n(1)(i,o);i.locals&&(t.exports=i.locals)},function(t,e){t.exports='.ck-image-upload-complete-icon{display:block;position:absolute;top:10px;right:10px;border-radius:50%}.ck-image-upload-complete-icon:after{content:"";position:absolute}:root{--ck-color-image-upload-icon:#fff;--ck-color-image-upload-icon-background:#008a00;--ck-image-upload-icon-size:20px;--ck-image-upload-icon-width:2px}.ck-image-upload-complete-icon{width:var(--ck-image-upload-icon-size);height:var(--ck-image-upload-icon-size);opacity:0;background:var(--ck-color-image-upload-icon-background);animation-name:ck-upload-complete-icon-show,ck-upload-complete-icon-hide;animation-fill-mode:forwards,forwards;animation-duration:.5s,.5s;font-size:var(--ck-image-upload-icon-size);animation-delay:0ms,3s}.ck-image-upload-complete-icon:after{left:25%;top:50%;opacity:0;height:0;width:0;transform:scaleX(-1) rotate(135deg);transform-origin:left 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.ck-button{padding:var(--ck-spacing-standard);margin:0;border-radius:0;border:0;border-top:1px solid var(--ck-color-base-border);width:50%}[dir=ltr] .ck.ck-link-form_layout-vertical .ck-button{margin-left:0}[dir=ltr] .ck.ck-link-form_layout-vertical .ck-button:first-of-type{border-right:1px solid var(--ck-color-base-border)}[dir=rtl] .ck.ck-link-form_layout-vertical .ck-button{margin-left:0}[dir=rtl] .ck.ck-link-form_layout-vertical .ck-button:last-of-type{border-right:1px solid var(--ck-color-base-border)}.ck.ck-link-form_layout-vertical .ck.ck-list{margin-left:0}.ck.ck-link-form_layout-vertical .ck.ck-list .ck-button.ck-switchbutton{border:0;width:100%}.ck.ck-link-form_layout-vertical .ck.ck-list .ck-button.ck-switchbutton:hover{background:none}"},function(t,e,n){var i=n(78);"string"==typeof i&&(i=[[t.i,i,""]]);var o={injectType:"singletonStyleTag",insert:"head",singleton:!0};n(1)(i,o);i.locals&&(t.exports=i.locals)},function(t,e){t.exports=".ck.ck-link-actions{display:flex;flex-direction:row;flex-wrap:nowrap}.ck.ck-link-actions .ck-link-actions__preview{display:inline-block}.ck.ck-link-actions .ck-link-actions__preview .ck-button__label{overflow:hidden}@media screen and (max-width:600px){.ck.ck-link-actions{flex-wrap:wrap}.ck.ck-link-actions .ck-link-actions__preview{flex-basis:100%}.ck.ck-link-actions .ck-button:not(.ck-link-actions__preview){flex-basis:50%}}.ck.ck-link-actions{padding:var(--ck-spacing-standard)}.ck.ck-link-actions .ck-button.ck-link-actions__preview{padding-left:0;padding-right:0}.ck.ck-link-actions .ck-button.ck-link-actions__preview,.ck.ck-link-actions .ck-button.ck-link-actions__preview:active,.ck.ck-link-actions .ck-button.ck-link-actions__preview:focus,.ck.ck-link-actions .ck-button.ck-link-actions__preview:hover{background:none}.ck.ck-link-actions .ck-button.ck-link-actions__preview:active{box-shadow:none}.ck.ck-link-actions .ck-button.ck-link-actions__preview:focus .ck-button__label{text-decoration:underline}.ck.ck-link-actions .ck-button.ck-link-actions__preview .ck-button__label{padding:0 var(--ck-spacing-medium);color:var(--ck-color-link-default);text-overflow:ellipsis;cursor:pointer;max-width:var(--ck-input-text-width);min-width:3em;text-align:center}.ck.ck-link-actions .ck-button.ck-link-actions__preview .ck-button__label:hover{text-decoration:underline}.ck.ck-link-actions:focus{outline:none}[dir=ltr] .ck.ck-link-actions .ck-button:not(:first-child),[dir=rtl] .ck.ck-link-actions .ck-button:not(:last-child){margin-left:var(--ck-spacing-standard)}@media screen and (max-width:600px){.ck.ck-link-actions{padding:0;width:calc(0.8*var(--ck-input-text-width))}.ck.ck-link-actions .ck-button.ck-link-actions__preview{margin:var(--ck-spacing-standard) var(--ck-spacing-standard) 0}.ck.ck-link-actions .ck-button.ck-link-actions__preview .ck-button__label{min-width:0;max-width:100%}.ck.ck-link-actions .ck-button:not(.ck-link-actions__preview){padding:var(--ck-spacing-standard);margin-top:var(--ck-spacing-standard);border-radius:0;border:0;border-top:1px solid var(--ck-color-base-border)}[dir=ltr] .ck.ck-link-actions .ck-button:not(.ck-link-actions__preview){margin-left:0}[dir=ltr] .ck.ck-link-actions .ck-button:not(.ck-link-actions__preview):first-of-type{border-right:1px solid var(--ck-color-base-border)}[dir=rtl] .ck.ck-link-actions .ck-button:not(.ck-link-actions__preview){margin-left:0}[dir=rtl] .ck.ck-link-actions .ck-button:not(.ck-link-actions__preview):last-of-type{border-right:1px solid var(--ck-color-base-border)}}"},function(t,e,n){var i=n(80);"string"==typeof i&&(i=[[t.i,i,""]]);var o={injectType:"singletonStyleTag",insert:"head",singleton:!0};n(1)(i,o);i.locals&&(t.exports=i.locals)},function(t,e){t.exports='.ck-media__wrapper .ck-media__placeholder{display:flex;flex-direction:column;align-items:center}.ck-media__wrapper .ck-media__placeholder .ck-media__placeholder__url .ck-tooltip{display:block}@media (hover:none){.ck-media__wrapper .ck-media__placeholder .ck-media__placeholder__url .ck-tooltip{display:none}}.ck-media__wrapper .ck-media__placeholder .ck-media__placeholder__url{max-width:100%;position:relative}.ck-media__wrapper .ck-media__placeholder .ck-media__placeholder__url:hover .ck-tooltip{visibility:visible;opacity:1}.ck-media__wrapper .ck-media__placeholder .ck-media__placeholder__url .ck-media__placeholder__url__text{overflow:hidden;display:block}.ck-media__wrapper[data-oembed-url*="facebook.com"] .ck-media__placeholder__icon *,.ck-media__wrapper[data-oembed-url*="google.com/maps"] .ck-media__placeholder__icon *,.ck-media__wrapper[data-oembed-url*="instagram.com"] .ck-media__placeholder__icon *,.ck-media__wrapper[data-oembed-url*="twitter.com"] .ck-media__placeholder__icon *{display:none}.ck-editor__editable:not(.ck-read-only) .ck-media__wrapper>:not(.ck-media__placeholder),.ck-editor__editable:not(.ck-read-only) .ck-widget:not(.ck-widget_selected) .ck-media__placeholder{pointer-events:none}:root{--ck-media-embed-placeholder-icon-size:3em;--ck-color-media-embed-placeholder-url-text:#757575;--ck-color-media-embed-placeholder-url-text-hover:var(--ck-color-base-text)}.ck-media__wrapper{margin:0 auto}.ck-media__wrapper .ck-media__placeholder{padding:calc(3*var(--ck-spacing-standard));background:var(--ck-color-base-foreground)}.ck-media__wrapper .ck-media__placeholder .ck-media__placeholder__icon{min-width:var(--ck-media-embed-placeholder-icon-size);height:var(--ck-media-embed-placeholder-icon-size);margin-bottom:var(--ck-spacing-large);background-position:50%;background-size:cover}.ck-media__wrapper .ck-media__placeholder .ck-media__placeholder__icon .ck-icon{width:100%;height:100%}.ck-media__wrapper .ck-media__placeholder .ck-media__placeholder__url .ck-media__placeholder__url__text{color:var(--ck-color-media-embed-placeholder-url-text);white-space:nowrap;text-align:center;font-style:italic;text-overflow:ellipsis}.ck-media__wrapper .ck-media__placeholder .ck-media__placeholder__url .ck-media__placeholder__url__text:hover{color:var(--ck-color-media-embed-placeholder-url-text-hover);cursor:pointer;text-decoration:underline}.ck-media__wrapper[data-oembed-url*="open.spotify.com"]{max-width:300px;max-height:380px}.ck-media__wrapper[data-oembed-url*="twitter.com"] .ck.ck-media__placeholder{background:linear-gradient(90deg,#71c6f4,#0d70a5)}.ck-media__wrapper[data-oembed-url*="twitter.com"] .ck.ck-media__placeholder .ck-media__placeholder__icon{background-image:url(data:image/svg+xml;base64,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)}.ck-media__wrapper[data-oembed-url*="twitter.com"] .ck.ck-media__placeholder .ck-media__placeholder__url__text{color:#b8e6ff}.ck-media__wrapper[data-oembed-url*="twitter.com"] .ck.ck-media__placeholder .ck-media__placeholder__url__text:hover{color:#fff}.ck-media__wrapper[data-oembed-url*="google.com/maps"] .ck-media__placeholder__icon{background-image:url(data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNTAuMzc4IiBoZWlnaHQ9IjI1NC4xNjciIHZpZXdCb3g9IjAgMCA2Ni4yNDYgNjcuMjQ4Ij48ZyB0cmFuc2Zvcm09InRyYW5zbGF0ZSgtMTcyLjUzMSAtMjE4LjQ1NSkgc2NhbGUoLjk4MDEyKSI+PHJlY3Qgcnk9IjUuMjM4IiByeD0iNS4yMzgiIHk9IjIzMS4zOTkiIHg9IjE3Ni4wMzEiIGhlaWdodD0iNjAuMDk5IiB3aWR0aD0iNjAuMDk5IiBmaWxsPSIjMzRhNjY4IiBwYWludC1vcmRlcj0ibWFya2VycyBzdHJva2UgZmlsbCIvPjxwYXRoIGQ9Ik0yMDYuNDc3IDI2MC45bC0yOC45ODcgMjguOTg3YTUuMjE4IDUuMjE4IDAgMDAzLjc4IDEuNjFoNDkuNjIxYzEuNjk0IDAgMy4xOS0uNzk4IDQuMTQ2LTIuMDM3eiIgZmlsbD0iIzVjODhjNSIvPjxwYXRoIGQ9Ik0yMjYuNzQyIDIyMi45ODhjLTkuMjY2IDAtMTYuNzc3IDcuMTctMTYuNzc3IDE2LjAxNC4wMDcgMi43NjIuNjYzIDUuNDc0IDIuMDkzIDcuODc1LjQzLjcwMy44MyAxLjQwOCAxLjE5IDIuMTA3LjMzMy41MDIuNjUgMS4wMDUuOTUgMS41MDguMzQzLjQ3Ny42NzMuOTU3Ljk4OCAxLjQ0IDEuMzEgMS43NjkgMi41IDMuNTAyIDMuNjM3IDUuMTY4Ljc5MyAxLjI3NSAxLjY4MyAyLjY0IDIuNDY2IDMuOTkgMi4zNjMgNC4wOTQgNC4wMDcgOC4wOTIgNC42IDEzLjkxNHYuMDEyYy4xODIuNDEyLjUxNi42NjYuODc5LjY2Ny40MDMtLjAwMS43NjgtLjMxNC45My0uNzk5LjYwMy01Ljc1NiAyLjIzOC05LjcyOSA0LjU4NS0xMy43OTQuNzgyLTEuMzUgMS42NzMtMi43MTUgMi40NjUtMy45OSAxLjEzNy0xLjY2NiAyLjMyOC0zLjQgMy42MzgtNS4xNjkuMzE1LS40ODIuNjQ1LS45NjIuOTg4LTEuNDM5LjMtLjUwMy42MTctMS4wMDYuOTUtMS41MDguMzU5LS43Ljc2LTEuNDA0IDEuMTktMi4xMDcgMS40MjYtMi40MDIgMi01LjExNCAyLjAwNC03Ljg3NSAwLTguODQ0LTcuNTExLTE2LjAxNC0xNi43NzYtMTYuMDE0eiIgZmlsbD0iI2RkNGIzZSIgcGFpbnQtb3JkZXI9Im1hcmtlcnMgc3Ryb2tlIGZpbGwiLz48ZWxsaXBzZSByeT0iNS41NjQiIHJ4PSI1LjgyOCIgY3k9IjIzOS4wMDIiIGN4PSIyMjYuNzQyIiBmaWxsPSIjODAyZDI3IiBwYWludC1vcmRlcj0ibWFya2VycyBzdHJva2UgZmlsbCIvPjxwYXRoIGQ9Ik0xOTAuMzAxIDIzNy4yODNjLTQuNjcgMC04LjQ1NyAzLjg1My04LjQ1NyA4LjYwNnMzLjc4NiA4LjYwNyA4LjQ1NyA4LjYwN2MzLjA0MyAwIDQuODA2LS45NTggNi4zMzctMi41MTYgMS41My0xLjU1NyAyLjA4Ny0zLjkxMyAyLjA4Ny02LjI5IDAtLjM2Mi0uMDIzLS43MjItLjA2NC0xLjA3OWgtOC4yNTd2My4wNDNoNC44NWMtLjE5Ny43NTktLjUzMSAxLjQ1LTEuMDU4IDEuOTg2LS45NDIuOTU4LTIuMDI4IDEuNTQ4LTMuOTAxIDEuNTQ4LTIuODc2IDAtNS4yMDgtMi4zNzItNS4yMDgtNS4yOTkgMC0yLjkyNiAyLjMzMi01LjI5OSA1LjIwOC01LjI5OSAxLjM5OSAwIDIuNjE4LjQwNyAzLjU4NCAxLjI5M2wyLjM4MS0yLjM4YzAtLjAwMi0uMDAzLS4wMDQtLjAwNC0uMDA1LTEuNTg4LTEuNTI0LTMuNjItMi4yMTUtNS45NTUtMi4yMTV6bTQuNDMgNS42NmwuMDAzLjAwNnYtLjAwM3oiIGZpbGw9IiNmZmYiIHBhaW50LW9yZGVyPSJtYXJrZXJzIHN0cm9rZSBmaWxsIi8+PHBhdGggZD0iTTIxNS4xODQgMjUxLjkyOWwtNy45OCA3Ljk3OSAyOC40NzcgMjguNDc1YTUuMjMzIDUuMjMzIDAgMDAuNDQ5LTIuMTIzdi0zMS4xNjVjLS40NjkuNjc1LS45MzQgMS4zNDktMS4zODIgMi4wMDUtLjc5MiAxLjI3NS0xLjY4MiAyLjY0LTIuNDY1IDMuOTktMi4zNDcgNC4wNjUtMy45ODIgOC4wMzgtNC41ODUgMTMuNzk0LS4xNjIuNDg1LS41MjcuNzk4LS45My43OTktLjM2My0uMDAxLS42OTctLjI1NS0uODc5LS42Njd2LS4wMTJjLS41OTMtNS44MjItMi4yMzctOS44Mi00LjYtMTMuOTE0LS43ODMtMS4zNS0xLjY3My0yLjcxNS0yLjQ2Ni0zLjk5LTEuMTM3LTEuNjY2LTIuMzI3LTMuNC0zLjYzNy01LjE2OWwtLjAwMi0uMDAzeiIgZmlsbD0iI2MzYzNjMyIvPjxwYXRoIGQ9Ik0yMTIuOTgzIDI0OC40OTVsLTM2Ljk1MiAzNi45NTN2LjgxMmE1LjIyNyA1LjIyNyAwIDAwNS4yMzggNS4yMzhoMS4wMTVsMzUuNjY2LTM1LjY2NmExMzYuMjc1IDEzNi4yNzUgMCAwMC0yLjc2NC0zLjkgMzcuNTc1IDM3LjU3NSAwIDAwLS45ODktMS40NCAzNS4xMjcgMzUuMTI3IDAgMDAtLjk1LTEuNTA4Yy0uMDgzLS4xNjItLjE3Ni0uMzI2LS4yNjQtLjQ4OXoiIGZpbGw9IiNmZGRjNGYiIHBhaW50LW9yZGVyPSJtYXJrZXJzIHN0cm9rZSBmaWxsIi8+PHBhdGggZD0iTTIxMS45OTggMjYxLjA4M2wtNi4xNTIgNi4xNTEgMjQuMjY0IDI0LjI2NGguNzgxYTUuMjI3IDUuMjI3IDAgMDA1LjIzOS01LjIzOHYtMS4wNDV6IiBmaWxsPSIjZmZmIiBwYWludC1vcmRlcj0ibWFya2VycyBzdHJva2UgZmlsbCIvPjwvZz48L3N2Zz4=)}.ck-media__wrapper[data-oembed-url*="facebook.com"] .ck-media__placeholder{background:#4268b3}.ck-media__wrapper[data-oembed-url*="facebook.com"] .ck-media__placeholder .ck-media__placeholder__icon{background-image:url(data:image/svg+xml;base64,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)}.ck-media__wrapper[data-oembed-url*="facebook.com"] .ck-media__placeholder .ck-media__placeholder__url__text{color:#cdf}.ck-media__wrapper[data-oembed-url*="facebook.com"] .ck-media__placeholder .ck-media__placeholder__url__text:hover{color:#fff}.ck-media__wrapper[data-oembed-url*="instagram.com"] .ck-media__placeholder{background:linear-gradient(-135deg,#1400c8,#b900b4,#f50000)}.ck-media__wrapper[data-oembed-url*="instagram.com"] .ck-media__placeholder 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this.position=Zi._createAfter(n),this._next();i=n.data[t.offset]}else i=n.getChild(t.offset);if(i instanceof ki)return this.shallow?t.offset++:t=new Zi(i,0),this.position=t,this._formatReturnValue("elementStart",i,e,t,1);if(i instanceof fi){if(this.singleCharacters)return t=new Zi(i,0),this.position=t,this._next();{let n,o=i.data.length;return i==this._boundaryEndParent?(o=this.boundaries.end.offset,n=new gi(i,0,o),t=Zi._createAfter(n)):(n=new gi(i,0,i.data.length),t.offset++),this.position=t,this._formatReturnValue("text",n,e,t,o)}}if("string"==typeof i){let i;if(this.singleCharacters)i=1;else{i=(n===this._boundaryEndParent?this.boundaries.end.offset:n.data.length)-t.offset}const o=new gi(n,t.offset,i);return t.offset+=i,this.position=t,this._formatReturnValue("text",o,e,t,i)}return t=Zi._createAfter(n),this.position=t,this.ignoreElementEnd?this._next():this._formatReturnValue("elementEnd",n,e,t)}_previous(){let t=this.position.clone();const e=this.position,n=t.parent;if(null===n.parent&&0===t.offset)return{done:!0};if(n==this._boundaryStartParent&&t.offset==this.boundaries.start.offset)return{done:!0};let i;if(n instanceof fi){if(t.isAtStart)return this.position=Zi._createBefore(n),this._previous();i=n.data[t.offset-1]}else i=n.getChild(t.offset-1);if(i instanceof ki)return this.shallow?(t.offset--,this.position=t,this._formatReturnValue("elementStart",i,e,t,1)):(t=new Zi(i,i.childCount),this.position=t,this.ignoreElementEnd?this._previous():this._formatReturnValue("elementEnd",i,e,t));if(i instanceof fi){if(this.singleCharacters)return t=new Zi(i,i.data.length),this.position=t,this._previous();{let n,o=i.data.length;if(i==this._boundaryStartParent){const e=this.boundaries.start.offset;o=(n=new gi(i,e,i.data.length-e)).data.length,t=Zi._createBefore(n)}else n=new gi(i,0,i.data.length),t.offset--;return this.position=t,this._formatReturnValue("text",n,e,t,o)}}if("string"==typeof i){let i;if(this.singleCharacters)i=1;else{const e=n===this._boundaryStartParent?this.boundaries.start.offset:0;i=t.offset-e}t.offset-=i;const o=new gi(n,t.offset,i);return this.position=t,this._formatReturnValue("text",o,e,t,i)}return t=Zi._createBefore(n),this.position=t,this._formatReturnValue("elementStart",n,e,t,1)}_formatReturnValue(t,e,n,i,o){return e instanceof gi&&(e.offsetInText+e.data.length==e.textNode.data.length&&("forward"!=this.direction||this.boundaries&&this.boundaries.end.isEqual(this.position)?n=Zi._createAfter(e.textNode):(i=Zi._createAfter(e.textNode),this.position=i)),0===e.offsetInText&&("backward"!=this.direction||this.boundaries&&this.boundaries.start.isEqual(this.position)?n=Zi._createBefore(e.textNode):(i=Zi._createBefore(e.textNode),this.position=i))),{done:!1,value:{type:t,item:e,previousPosition:n,nextPosition:i,length:o}}}}class Zi{constructor(t,e){this.parent=t,this.offset=e}get nodeAfter(){return this.parent.is("text")?null:this.parent.getChild(this.offset)||null}get nodeBefore(){return this.parent.is("text")?null:this.parent.getChild(this.offset-1)||null}get isAtStart(){return 0===this.offset}get isAtEnd(){const t=this.parent.is("text")?this.parent.data.length:this.parent.childCount;return this.offset===t}get root(){return this.parent.root}get editableElement(){let t=this.parent;for(;!(t instanceof Gi);){if(!t.parent)return null;t=t.parent}return t}getShiftedBy(t){const e=Zi._createAt(this),n=e.offset+t;return e.offset=n<0?0:n,e}getLastMatchingPosition(t,e={}){e.startPosition=this;const n=new Ji(e);return n.skip(t),n.position}getAncestors(){return this.parent.is("documentFragment")?[this.parent]:this.parent.getAncestors({includeSelf:!0})}getCommonAncestor(t){const e=this.getAncestors(),n=t.getAncestors();let i=0;for(;e[i]==n[i]&&e[i];)i++;return 0===i?null:e[i-1]}is(t){return"position"==t||"view:position"==t}isEqual(t){return this.parent==t.parent&&this.offset==t.offset}isBefore(t){return"before"==this.compareWith(t)}isAfter(t){return"after"==this.compareWith(t)}compareWith(t){if(this.root!==t.root)return"different";if(this.isEqual(t))return"same";const e=this.parent.is("node")?this.parent.getPath():[],n=t.parent.is("node")?t.parent.getPath():[];e.push(this.offset),n.push(t.offset);const i=li(e,n);switch(i){case"prefix":return"before";case"extension":return"after";default:return e[i]0?new this(n,i):new this(i,n)}static _createIn(t){return this._createFromParentsAndOffsets(t,0,t,t.childCount)}static _createOn(t){const e=t.is("textProxy")?t.offsetSize:1;return this._createFromPositionAndShift(Zi._createBefore(t),e)}}function to(t){return!(!t.item.is("attributeElement")&&!t.item.is("uiElement"))}function eo(t){let e=0;for(const n of t)e++;return e}class no{constructor(t=null,e,n){this._ranges=[],this._lastRangeBackward=!1,this._isFake=!1,this._fakeSelectionLabel="",this.setTo(t,e,n)}get isFake(){return this._isFake}get fakeSelectionLabel(){return this._fakeSelectionLabel}get anchor(){if(!this._ranges.length)return null;const t=this._ranges[this._ranges.length-1];return(this._lastRangeBackward?t.end:t.start).clone()}get focus(){if(!this._ranges.length)return null;const t=this._ranges[this._ranges.length-1];return(this._lastRangeBackward?t.start:t.end).clone()}get isCollapsed(){return 1===this.rangeCount&&this._ranges[0].isCollapsed}get rangeCount(){return this._ranges.length}get isBackward(){return!this.isCollapsed&&this._lastRangeBackward}get editableElement(){return this.anchor?this.anchor.editableElement:null}*getRanges(){for(const t of this._ranges)yield t.clone()}getFirstRange(){let t=null;for(const e of this._ranges)t&&!e.start.isBefore(t.start)||(t=e);return t?t.clone():null}getLastRange(){let t=null;for(const e of this._ranges)t&&!e.end.isAfter(t.end)||(t=e);return t?t.clone():null}getFirstPosition(){const t=this.getFirstRange();return t?t.start.clone():null}getLastPosition(){const t=this.getLastRange();return t?t.end.clone():null}isEqual(t){if(this.isFake!=t.isFake)return!1;if(this.isFake&&this.fakeSelectionLabel!=t.fakeSelectionLabel)return!1;if(this.rangeCount!=t.rangeCount)return!1;if(0===this.rangeCount)return!0;if(!this.anchor.isEqual(t.anchor)||!this.focus.isEqual(t.focus))return!1;for(const e of this._ranges){let n=!1;for(const i of t._ranges)if(e.isEqual(i)){n=!0;break}if(!n)return!1}return!0}isSimilar(t){if(this.isBackward!=t.isBackward)return!1;const e=eo(this.getRanges());if(e!=eo(t.getRanges()))return!1;if(0==e)return!0;for(let e of this.getRanges()){e=e.getTrimmed();let n=!1;for(let i of t.getRanges())if(i=i.getTrimmed(),e.start.isEqual(i.start)&&e.end.isEqual(i.end)){n=!0;break}if(!n)return!1}return!0}getSelectedElement(){if(1!==this.rangeCount)return null;const t=this.getFirstRange();let e=t.start.nodeAfter,n=t.end.nodeBefore;return t.start.parent.is("text")&&t.start.isAtEnd&&t.start.parent.nextSibling&&(e=t.start.parent.nextSibling),t.end.parent.is("text")&&t.end.isAtStart&&t.end.parent.previousSibling&&(n=t.end.parent.previousSibling),e instanceof ki&&e==n?e:null}setTo(t,e,n){if(null===t)this._setRanges([]),this._setFakeOptions(e);else if(t instanceof no||t instanceof io)this._setRanges(t.getRanges(),t.isBackward),this._setFakeOptions({fake:t.isFake,label:t.fakeSelectionLabel});else if(t instanceof Xi)this._setRanges([t],e&&e.backward),this._setFakeOptions(e);else if(t instanceof Zi)this._setRanges([new Xi(t)]),this._setFakeOptions(e);else if(t instanceof ui){const i=!!n&&!!n.backward;let o;if(void 0===e)throw new Gn.b("view-selection-setTo-required-second-parameter: selection.setTo requires the second parameter when the first parameter is a node.",this);o="in"==e?Xi._createIn(t):"on"==e?Xi._createOn(t):new Xi(Zi._createAt(t,e)),this._setRanges([o],i),this._setFakeOptions(n)}else{if(!pi(t))throw new Gn.b("view-selection-setTo-not-selectable: Cannot set selection to given place.",this);this._setRanges(t,e&&e.backward),this._setFakeOptions(e)}this.fire("change")}setFocus(t,e){if(null===this.anchor)throw new Gn.b("view-selection-setFocus-no-ranges: Cannot set selection focus if there are no ranges in selection.",this);const n=Zi._createAt(t,e);if("same"==n.compareWith(this.focus))return;const i=this.anchor;this._ranges.pop(),"before"==n.compareWith(i)?this._addRange(new Xi(n,i),!0):this._addRange(new Xi(i,n)),this.fire("change")}is(t){return"selection"==t||"view:selection"==t}_setRanges(t,e=!1){t=Array.from(t),this._ranges=[];for(const e of t)this._addRange(e);this._lastRangeBackward=!!e}_setFakeOptions(t={}){this._isFake=!!t.fake,this._fakeSelectionLabel=t.fake&&t.label||""}_addRange(t,e=!1){if(!(t instanceof Xi))throw new Gn.b("view-selection-add-range-not-range: Selection range set to an object that is not an instance of view.Range",this);this._pushRange(t),this._lastRangeBackward=!!e}_pushRange(t){for(const e of this._ranges)if(t.isIntersecting(e))throw new Gn.b("view-selection-range-intersects: Trying to add a range that intersects with another range from selection.",this,{addedRange:t,intersectingRange:e});this._ranges.push(new Xi(t.start,t.end))}}ci(no,ei);class io{constructor(t=null,e,n){this._selection=new no,this._selection.delegate("change").to(this),this._selection.setTo(t,e,n)}get isFake(){return this._selection.isFake}get fakeSelectionLabel(){return this._selection.fakeSelectionLabel}get anchor(){return this._selection.anchor}get focus(){return this._selection.focus}get isCollapsed(){return this._selection.isCollapsed}get rangeCount(){return this._selection.rangeCount}get isBackward(){return this._selection.isBackward}get editableElement(){return this._selection.editableElement}get _ranges(){return this._selection._ranges}*getRanges(){yield*this._selection.getRanges()}getFirstRange(){return this._selection.getFirstRange()}getLastRange(){return this._selection.getLastRange()}getFirstPosition(){return this._selection.getFirstPosition()}getLastPosition(){return this._selection.getLastPosition()}getSelectedElement(){return this._selection.getSelectedElement()}isEqual(t){return this._selection.isEqual(t)}isSimilar(t){return this._selection.isSimilar(t)}is(t){return"selection"==t||"documentSelection"==t||"view:selection"==t||"view:documentSelection"==t}_setTo(t,e,n){this._selection.setTo(t,e,n)}_setFocus(t,e){this._selection.setFocus(t,e)}}ci(io,ei);class oo{constructor(t={}){this._items=[],this._itemMap=new Map,this._idProperty=t.idProperty||"id",this._bindToExternalToInternalMap=new WeakMap,this._bindToInternalToExternalMap=new WeakMap,this._skippedIndexesFromExternal=[]}get length(){return this._items.length}get first(){return this._items[0]||null}get last(){return this._items[this.length-1]||null}add(t,e){let n;const i=this._idProperty;if(i in t){if("string"!=typeof(n=t[i]))throw new Gn.b("collection-add-invalid-id",this);if(this.get(n))throw new Gn.b("collection-add-item-already-exists",this)}else t[i]=n=Jn();if(void 0===e)e=this._items.length;else if(e>this._items.length||e<0)throw new Gn.b("collection-add-item-invalid-index",this);return this._items.splice(e,0,t),this._itemMap.set(n,t),this.fire("add",t,e),this}get(t){let e;if("string"==typeof t)e=this._itemMap.get(t);else{if("number"!=typeof t)throw new Gn.b("collection-get-invalid-arg: Index or id must be given.",this);e=this._items[t]}return e||null}has(t){if("string"==typeof t)return this._itemMap.has(t);{const e=t[this._idProperty];return this._itemMap.has(e)}}getIndex(t){let e;return e="string"==typeof t?this._itemMap.get(t):t,this._items.indexOf(e)}remove(t){let e,n,i,o=!1;const r=this._idProperty;if("string"==typeof t?(n=t,o=!(i=this._itemMap.get(n)),i&&(e=this._items.indexOf(i))):"number"==typeof t?(e=t,o=!(i=this._items[e]),i&&(n=i[r])):(n=(i=t)[r],o=-1==(e=this._items.indexOf(i))||!this._itemMap.get(n)),o)throw new Gn.b("collection-remove-404: Item not found.",this);this._items.splice(e,1),this._itemMap.delete(n);const s=this._bindToInternalToExternalMap.get(i);return this._bindToInternalToExternalMap.delete(i),this._bindToExternalToInternalMap.delete(s),this.fire("remove",i,e),i}map(t,e){return this._items.map(t,e)}find(t,e){return this._items.find(t,e)}filter(t,e){return this._items.filter(t,e)}clear(){for(this._bindToCollection&&(this.stopListening(this._bindToCollection),this._bindToCollection=null);this.length;)this.remove(0)}bindTo(t){if(this._bindToCollection)throw new Gn.b("collection-bind-to-rebind: The collection cannot be bound more than once.",this);return this._bindToCollection=t,{as:t=>{this._setUpBindToBinding(e=>new t(e))},using:t=>{"function"==typeof t?this._setUpBindToBinding(e=>t(e)):this._setUpBindToBinding(e=>e[t])}}}_setUpBindToBinding(t){const e=this._bindToCollection,n=(n,i,o)=>{const r=e._bindToCollection==this,s=e._bindToInternalToExternalMap.get(i);if(r&&s)this._bindToExternalToInternalMap.set(i,s),this._bindToInternalToExternalMap.set(s,i);else{const n=t(i);if(!n)return void this._skippedIndexesFromExternal.push(o);let r=o;for(const t of this._skippedIndexesFromExternal)o>t&&r--;for(const t of e._skippedIndexesFromExternal)r>=t&&r++;this._bindToExternalToInternalMap.set(i,n),this._bindToInternalToExternalMap.set(n,i),this.add(n,r);for(let t=0;t{const i=this._bindToExternalToInternalMap.get(e);i&&this.remove(i),this._skippedIndexesFromExternal=this._skippedIndexesFromExternal.reduce((t,e)=>(ne&&t.push(e),t),[])})}[Symbol.iterator](){return this._items[Symbol.iterator]()}}ci(oo,ei);class ro{constructor(){this.selection=new io,this.roots=new oo({idProperty:"rootName"}),this.set("isReadOnly",!1),this.set("isFocused",!1),this.set("isComposing",!1),this._postFixers=new Set}getRoot(t="main"){return this.roots.get(t)}registerPostFixer(t){this._postFixers.add(t)}destroy(){this.roots.map(t=>t.destroy()),this.stopListening()}_callPostFixers(t){let e=!1;do{for(const n of this._postFixers)if(e=n(t))break}while(e)}}ci(ro,Fi);const so=10;class ao extends ki{constructor(t,e,n){super(t,e,n),this.getFillerOffset=co,this._priority=so,this._id=null,this._clonesGroup=null}get priority(){return this._priority}get id(){return this._id}getElementsWithSameId(){if(null===this.id)throw new Gn.b("attribute-element-get-elements-with-same-id-no-id: Cannot get elements with the same id for an attribute element without id.",this);return new Set(this._clonesGroup)}is(t,e=null){const n=t&&t.replace(/^view:/,"");return e?"attributeElement"==n&&e==this.name||super.is(t,e):"attributeElement"==n||super.is(t)}isSimilar(t){return null!==this.id||null!==t.id?this.id===t.id:super.isSimilar(t)&&this.priority==t.priority}_clone(t){const e=super._clone(t);return e._priority=this._priority,e._id=this._id,e}}function co(){if(lo(this))return null;let t=this.parent;for(;t&&t.is("attributeElement");){if(lo(t)>1)return null;t=t.parent}return!t||lo(t)>1?null:this.childCount}function lo(t){return Array.from(t.getChildren()).filter(t=>!t.is("uiElement")).length}ao.DEFAULT_PRIORITY=so;class ho extends ki{constructor(t,e,n){super(t,e,n),this.getFillerOffset=uo}is(t,e=null){const n=t.replace(/^view:/,"");return e?"emptyElement"==n&&e==this.name||super.is(t,e):"emptyElement"==n||super.is(t)}_insertChild(t,e){if(e&&(e instanceof ui||Array.from(e).length>0))throw new Gn.b("view-emptyelement-cannot-add: Cannot add child nodes to EmptyElement instance.",[this,e])}}function uo(){return null}const fo=navigator.userAgent.toLowerCase();var go={isMac:function(t){return t.indexOf("macintosh")>-1}(fo),isEdge:function(t){return!!t.match(/edge\/(\d+.?\d*)/)}(fo),isGecko:function(t){return!!t.match(/gecko\/\d+/)}(fo),isSafari:function(t){return t.indexOf(" applewebkit/")>-1&&-1===t.indexOf("chrome")}(fo),isAndroid:function(t){return t.indexOf("android")>-1}(fo),features:{isRegExpUnicodePropertySupported:function(){let t=!1;try{t=0==="ć".search(new RegExp("[\\p{L}]","u"))}catch(t){}return t}()}};const mo={"⌘":"ctrl","⇧":"shift","⌥":"alt"},po={ctrl:"⌘",shift:"⇧",alt:"⌥"},bo=function(){const t={arrowleft:37,arrowup:38,arrowright:39,arrowdown:40,backspace:8,delete:46,enter:13,space:32,esc:27,tab:9,ctrl:1114112,cmd:1114112,shift:2228224,alt:4456448};for(let e=65;e<=90;e++){const n=String.fromCharCode(e);t[n.toLowerCase()]=e}for(let e=48;e<=57;e++)t[e-48]=e;for(let e=112;e<=123;e++)t["f"+(e-111)]=e;return t}();function wo(t){let e;if("string"==typeof t){if(!(e=bo[t.toLowerCase()]))throw new Gn.b("keyboard-unknown-key: Unknown key name.",null,{key:t})}else e=t.keyCode+(t.altKey?bo.alt:0)+(t.ctrlKey?bo.ctrl:0)+(t.shiftKey?bo.shift:0);return e}function ko(t){return"string"==typeof t&&(t=_o(t)),t.map(t=>"string"==typeof t?wo(t):t).reduce((t,e)=>e+t,0)}function _o(t){return t.split(/\s*\+\s*/)}class vo extends ki{constructor(t,e,n){super(t,e,n),this.getFillerOffset=xo}is(t,e=null){const n=t.replace(/^view:/,"");return e?"uiElement"==n&&e==this.name||super.is(t,e):"uiElement"==n||super.is(t)}_insertChild(t,e){if(e&&(e instanceof ui||Array.from(e).length>0))throw new Gn.b("view-uielement-cannot-add: Cannot add child nodes to UIElement instance.",this)}render(t){return this.toDomElement(t)}toDomElement(t){const e=t.createElement(this.name);for(const t of this.getAttributeKeys())e.setAttribute(t,this.getAttribute(t));return e}}function yo(t){t.document.on("keydown",(e,n)=>(function(t,e,n){if(e.keyCode==bo.arrowright){const t=e.domTarget.ownerDocument.defaultView.getSelection(),i=1==t.rangeCount&&t.getRangeAt(0).collapsed;if(i||e.shiftKey){const e=t.focusNode,o=t.focusOffset,r=n.domPositionToView(e,o);if(null===r)return;let s=!1;const a=r.getLastMatchingPosition(t=>(t.item.is("uiElement")&&(s=!0),!(!t.item.is("uiElement")&&!t.item.is("attributeElement"))));if(s){const e=n.viewPositionToDom(a);i?t.collapse(e.parent,e.offset):t.extend(e.parent,e.offset)}}}})(0,n,t.domConverter))}function xo(){return null}class Ao{constructor(t){this._children=[],t&&this._insertChild(0,t)}[Symbol.iterator](){return this._children[Symbol.iterator]()}get childCount(){return this._children.length}get isEmpty(){return 0===this.childCount}get root(){return this}get parent(){return null}is(t){return"documentFragment"==t||"view:documentFragment"==t}_appendChild(t){return this._insertChild(this.childCount,t)}getChild(t){return this._children[t]}getChildIndex(t){return this._children.indexOf(t)}getChildren(){return this._children[Symbol.iterator]()}_insertChild(t,e){this._fireChange("children",this);let n=0;const i=function(t){if("string"==typeof t)return[new fi(t)];pi(t)||(t=[t]);return Array.from(t).map(t=>"string"==typeof t?new fi(t):t instanceof gi?new fi(t.data):t)}(e);for(const e of i)null!==e.parent&&e._remove(),e.parent=this,this._children.splice(t,0,e),t++,n++;return n}_removeChildren(t,e=1){this._fireChange("children",this);for(let n=t;ni instanceof t))throw new Gn.b("view-writer-insert-invalid-node",n);i.is("text")||t(i.getChildren(),n)}})(e=pi(e)?[...e]:[e],this.document);const n=Co(t);if(!n)throw new Gn.b("view-writer-invalid-position-container",this.document);const i=this._breakAttributes(t,!0),o=n._insertChild(i.offset,e);for(const t of e)this._addToClonedElementsGroup(t);const r=i.getShiftedBy(o),s=this.mergeAttributes(i);if(0===o)return new Xi(s,s);{s.isEqual(i)||r.offset--;const t=this.mergeAttributes(r);return new Xi(s,t)}}remove(t){const e=t instanceof Xi?t:Xi._createOn(t);if(Oo(e,this.document),e.isCollapsed)return new Ao;const{start:n,end:i}=this._breakAttributesRange(e,!0),o=n.parent,r=i.offset-n.offset,s=o._removeChildren(n.offset,r);for(const t of s)this._removeFromClonedElementsGroup(t);const a=this.mergeAttributes(n);return e.start=a,e.end=a.clone(),new Ao(s)}clear(t,e){Oo(t,this.document);const n=t.getWalker({direction:"backward",ignoreElementEnd:!0});for(const i of n){const n=i.item;let o;if(n.is("element")&&e.isSimilar(n))o=Xi._createOn(n);else if(!i.nextPosition.isAfter(t.start)&&n.is("textProxy")){const t=n.getAncestors().find(t=>t.is("element")&&e.isSimilar(t));t&&(o=Xi._createIn(t))}o&&(o.end.isAfter(t.end)&&(o.end=t.end),o.start.isBefore(t.start)&&(o.start=t.start),this.remove(o))}}move(t,e){let n;if(e.isAfter(t.end)){const i=(e=this._breakAttributes(e,!0)).parent,o=i.childCount;t=this._breakAttributesRange(t,!0),n=this.remove(t),e.offset+=i.childCount-o}else n=this.remove(t);return this.insert(e,n)}wrap(t,e){if(!(e instanceof ao))throw new Gn.b("view-writer-wrap-invalid-attribute",this.document);if(Oo(t,this.document),t.isCollapsed){let n=t.start;n.parent.is("element")&&!function(t){return Array.from(t.getChildren()).some(t=>!t.is("uiElement"))}(n.parent)&&(n=n.getLastMatchingPosition(t=>t.item.is("uiElement"))),n=this._wrapPosition(n,e);const i=this.document.selection;return i.isCollapsed&&i.getFirstPosition().isEqual(t.start)&&this.setSelection(n),new Xi(n)}return this._wrapRange(t,e)}unwrap(t,e){if(!(e instanceof ao))throw new Gn.b("view-writer-unwrap-invalid-attribute",this.document);if(Oo(t,this.document),t.isCollapsed)return t;const{start:n,end:i}=this._breakAttributesRange(t,!0),o=n.parent,r=this._unwrapChildren(o,n.offset,i.offset,e),s=this.mergeAttributes(r.start);s.isEqual(r.start)||r.end.offset--;const a=this.mergeAttributes(r.end);return new Xi(s,a)}rename(t,e){const n=new yi(t,e.getAttributes());return this.insert(Zi._createAfter(e),n),this.move(Xi._createIn(e),Zi._createAt(n,0)),this.remove(Xi._createOn(e)),n}clearClonedElementsGroup(t){this._cloneGroups.delete(t)}createPositionAt(t,e){return Zi._createAt(t,e)}createPositionAfter(t){return Zi._createAfter(t)}createPositionBefore(t){return Zi._createBefore(t)}createRange(t,e){return new Xi(t,e)}createRangeOn(t){return Xi._createOn(t)}createRangeIn(t){return Xi._createIn(t)}createSelection(t,e,n){return new no(t,e,n)}_wrapChildren(t,e,n,i){let o=e;const r=[];for(;o!1),t.parent._insertChild(t.offset,n);const i=new Xi(t,t.getShiftedBy(1));this.wrap(i,e);const o=new Zi(n.parent,n.index);n._remove();const r=o.nodeBefore,s=o.nodeAfter;return r instanceof fi&&s instanceof fi?Eo(r,s):So(o)}_wrapAttributeElement(t,e){if(!Ro(t,e))return!1;if(t.name!==e.name||t.priority!==e.priority)return!1;for(const n of t.getAttributeKeys())if("class"!==n&&"style"!==n&&e.hasAttribute(n)&&e.getAttribute(n)!==t.getAttribute(n))return!1;for(const n of t.getStyleNames())if(e.hasStyle(n)&&e.getStyle(n)!==t.getStyle(n))return!1;for(const n of t.getAttributeKeys())"class"!==n&&"style"!==n&&(e.hasAttribute(n)||this.setAttribute(n,t.getAttribute(n),e));for(const n of t.getStyleNames())e.hasStyle(n)||this.setStyle(n,t.getStyle(n),e);for(const n of t.getClassNames())e.hasClass(n)||this.addClass(n,e);return!0}_unwrapAttributeElement(t,e){if(!Ro(t,e))return!1;if(t.name!==e.name||t.priority!==e.priority)return!1;for(const n of t.getAttributeKeys())if("class"!==n&&"style"!==n&&(!e.hasAttribute(n)||e.getAttribute(n)!==t.getAttribute(n)))return!1;if(!e.hasClass(...t.getClassNames()))return!1;for(const n of t.getStyleNames())if(!e.hasStyle(n)||e.getStyle(n)!==t.getStyle(n))return!1;for(const n of t.getAttributeKeys())"class"!==n&&"style"!==n&&this.removeAttribute(n,e);return this.removeClass(Array.from(t.getClassNames()),e),this.removeStyle(Array.from(t.getStyleNames()),e),!0}_breakAttributesRange(t,e=!1){const n=t.start,i=t.end;if(Oo(t,this.document),t.isCollapsed){const n=this._breakAttributes(t.start,e);return new Xi(n,n)}const o=this._breakAttributes(i,e),r=o.parent.childCount,s=this._breakAttributes(n,e);return o.offset+=o.parent.childCount-r,new Xi(s,o)}_breakAttributes(t,e=!1){const n=t.offset,i=t.parent;if(t.parent.is("emptyElement"))throw new Gn.b("view-writer-cannot-break-empty-element",this.document);if(t.parent.is("uiElement"))throw new Gn.b("view-writer-cannot-break-ui-element",this.document);if(!e&&i.is("text")&&No(i.parent))return t.clone();if(No(i))return t.clone();if(i.is("text"))return this._breakAttributes(Mo(t),e);if(n==i.childCount){const t=new Zi(i.parent,i.index+1);return this._breakAttributes(t,e)}if(0===n){const t=new Zi(i.parent,i.index);return this._breakAttributes(t,e)}{const t=i.index+1,o=i._clone();i.parent._insertChild(t,o),this._addToClonedElementsGroup(o);const r=i.childCount-n,s=i._removeChildren(n,r);o._appendChild(s);const a=new Zi(i.parent,t);return this._breakAttributes(a,e)}}_addToClonedElementsGroup(t){if(!t.root.is("rootElement"))return;if(t.is("element"))for(const e of t.getChildren())this._addToClonedElementsGroup(e);const e=t.id;if(!e)return;let n=this._cloneGroups.get(e);n||(n=new 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this._inlineFiller=null;this._updateSelection(),this._updateFocus(),this.markedTexts.clear(),this.markedAttributes.clear(),this.markedChildren.clear()}_updateChildrenMappings(t){const e=this.domConverter.mapViewToDom(t);if(!e)return;const n=this.domConverter.mapViewToDom(t).childNodes,i=Array.from(this.domConverter.viewChildrenToDom(t,e.ownerDocument,{withChildren:!1})),o=this._diffNodeLists(n,i),r=this._findReplaceActions(o,n,i);if(-1!==r.indexOf("replace")){const e={equal:0,insert:0,delete:0};for(const o of r)if("replace"===o){const o=e.equal+e.insert,r=e.equal+e.delete,s=t.getChild(o);s&&!s.is("uiElement")&&this._updateElementMappings(s,n[r]),Qo(i[o]),e.equal++}else e[o]++}}_updateElementMappings(t,e){this.domConverter.unbindDomElement(e),this.domConverter.bindElements(e,t),this.markedChildren.add(t),this.markedAttributes.add(t)}_getInlineFillerPosition(){const t=this.selection.getFirstPosition();return t.parent.is("text")?Zi._createBefore(this.selection.getFirstPosition().parent):t}_isSelectionInInlineFiller(){if(1!=this.selection.rangeCount||!this.selection.isCollapsed)return!1;const t=this.selection.getFirstPosition(),e=this.domConverter.viewPositionToDom(t);return!!(e&&Do(e.parent)&&Bo(e.parent))}_removeInlineFiller(){const t=this._inlineFiller;if(!Bo(t))throw new Gn.b("view-renderer-filler-was-lost: The inline filler node was lost.",this);Fo(t)?t.parentNode.removeChild(t):t.data=t.data.substr(Vo),this._inlineFiller=null}_needsInlineFillerAtSelection(){if(1!=this.selection.rangeCount||!this.selection.isCollapsed)return!1;const t=this.selection.getFirstPosition(),e=t.parent,n=t.offset;if(!this.domConverter.mapViewToDom(e.root))return!1;if(!e.is("element"))return!1;if(!function(t){if("false"==t.getAttribute("contenteditable"))return!1;const 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i=e.inlineFillerPosition,o=this.domConverter.mapViewToDom(t).childNodes,r=Array.from(this.domConverter.viewChildrenToDom(t,n.ownerDocument,{bind:!0,inlineFillerPosition:i}));i&&i.parent===t&&Zo(n.ownerDocument,r,i.offset);const s=this._diffNodeLists(o,r);let a=0;const c=new Set;for(const t of s)"insert"===t?(Go(n,a,r[a]),a++):"delete"===t?(c.add(o[a]),Qo(o[a])):(this._markDescendantTextToSync(this.domConverter.domToView(r[a])),a++);for(const t of c)t.parentNode||this.domConverter.unbindDomElement(t)}_diffNodeLists(t,e){return $o(t=function(t,e){const n=Array.from(t);if(0==n.length||!e)return n;n[n.length-1]==e&&n.pop();return n}(t,this._fakeSelectionContainer),e,function(t,e,n){if(e===n)return!0;if(Do(e)&&Do(n))return e.data===n.data;if(t.isBlockFiller(e)&&t.isBlockFiller(n))return!0;return!1}.bind(null,this.domConverter))}_findReplaceActions(t,e,n){if(-1===t.indexOf("insert")||-1===t.indexOf("delete"))return t;let i=[],o=[],r=[];const s={equal:0,insert:0,delete:0};for(const a of 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n=this._fakeSelectionContainer;if(this.domConverter.bindFakeSelection(n,this.selection),!this._fakeSelectionNeedsUpdate(t))return;n.parentElement&&n.parentElement==t||t.appendChild(n),n.textContent=this.selection.fakeSelectionLabel||" ";const i=e.getSelection(),o=e.createRange();i.removeAllRanges(),o.selectNodeContents(n),i.addRange(o)}_updateDomSelection(t){const e=t.ownerDocument.defaultView.getSelection();if(!this._domSelectionNeedsUpdate(e))return;const n=this.domConverter.viewPositionToDom(this.selection.anchor),i=this.domConverter.viewPositionToDom(this.selection.focus);t.focus(),e.collapse(n.parent,n.offset),e.extend(i.parent,i.offset),go.isGecko&&function(t,e){const n=t.parent;if(n.nodeType!=Node.ELEMENT_NODE||t.offset!=n.childNodes.length-1)return;const i=n.childNodes[t.offset];i&&"BR"==i.tagName&&e.addRange(e.getRangeAt(0))}(i,e)}_domSelectionNeedsUpdate(t){if(!this.domConverter.isDomSelectionCorrect(t))return!0;const e=t&&this.domConverter.domSelectionToView(t);return(!e||!this.selection.isEqual(e))&&!(!this.selection.isCollapsed&&this.selection.isSimilar(e))}_fakeSelectionNeedsUpdate(t){const e=this._fakeSelectionContainer,n=t.ownerDocument.getSelection();return!e||e.parentElement!==t||(n.anchorNode!==e&&!e.contains(n.anchorNode)||e.textContent!==this.selection.fakeSelectionLabel)}_removeDomSelection(){for(const t of this.domDocuments){if(t.getSelection().rangeCount){const e=t.activeElement,n=this.domConverter.mapDomToView(e);e&&n&&t.getSelection().removeAllRanges()}}}_removeFakeSelection(){const t=this._fakeSelectionContainer;t&&t.remove()}_updateFocus(){if(this.isFocused){const t=this.selection.editableElement;t&&this.domConverter.focus(t)}}}function Zo(t,e,n){const i=e instanceof Array?e:e.childNodes,o=i[n];if(Do(o))return o.data=zo+o.data,o;{const o=t.createTextNode(zo);return Array.isArray(e)?i.splice(n,0,o):Go(e,n,o),o}}function Xo(t,e){return Ko(t)&&Ko(e)&&!Do(t)&&!Do(e)&&t.tagName.toLowerCase()===e.tagName.toLowerCase()}ci(Jo,Fi);var tr={window:window,document:document};function er(t){let e=0;for(;t.previousSibling;)t=t.previousSibling,e++;return e}function nr(t){const e=[];for(;t&&t.nodeType!=Node.DOCUMENT_NODE;)e.unshift(t),t=t.parentNode;return e}const ir=jo(document);class or{constructor(t={}){this.blockFillerMode=t.blockFillerMode||"br",this.preElements=["pre"],this.blockElements=["p","div","h1","h2","h3","h4","h5","h6","li","dd","dt","figcaption"],this._blockFiller="br"==this.blockFillerMode?jo:Lo,this._domToViewMapping=new WeakMap,this._viewToDomMapping=new WeakMap,this._fakeSelectionMapping=new WeakMap}bindFakeSelection(t,e){this._fakeSelectionMapping.set(t,new no(e))}fakeSelectionToView(t){return this._fakeSelectionMapping.get(t)}bindElements(t,e){this._domToViewMapping.set(t,e),this._viewToDomMapping.set(e,t)}unbindDomElement(t){const e=this._domToViewMapping.get(t);if(e){this._domToViewMapping.delete(t),this._viewToDomMapping.delete(e);for(const e of Array.from(t.childNodes))this.unbindDomElement(e)}}bindDocumentFragments(t,e){this._domToViewMapping.set(t,e),this._viewToDomMapping.set(e,t)}viewToDom(t,e,n={}){if(t.is("text")){const n=this._processDataFromViewText(t);return e.createTextNode(n)}{if(this.mapViewToDom(t))return this.mapViewToDom(t);let i;if(t.is("documentFragment"))i=e.createDocumentFragment(),n.bind&&this.bindDocumentFragments(i,t);else{if(t.is("uiElement"))return i=t.render(e),n.bind&&this.bindElements(i,t),i;i=t.hasAttribute("xmlns")?e.createElementNS(t.getAttribute("xmlns"),t.name):e.createElement(t.name),n.bind&&this.bindElements(i,t);for(const e of t.getAttributeKeys())i.setAttribute(e,t.getAttribute(e))}if(n.withChildren||void 0===n.withChildren)for(const o of this.viewChildrenToDom(t,e,n))i.appendChild(o);return i}}*viewChildrenToDom(t,e,n={}){const i=t.getFillerOffset&&t.getFillerOffset();let o=0;for(const r of t.getChildren())i===o&&(yield this._blockFiller(e)),yield this.viewToDom(r,e,n),o++;i===o&&(yield this._blockFiller(e))}viewRangeToDom(t){const e=this.viewPositionToDom(t.start),n=this.viewPositionToDom(t.end),i=document.createRange();return i.setStart(e.parent,e.offset),i.setEnd(n.parent,n.offset),i}viewPositionToDom(t){const e=t.parent;if(e.is("text")){const n=this.findCorrespondingDomText(e);if(!n)return null;let i=t.offset;return Bo(n)&&(i+=Vo),{parent:n,offset:i}}{let n,i,o;if(0===t.offset){if(!(n=this.mapViewToDom(e)))return null;o=n.childNodes[0]}else{const e=t.nodeBefore;if(!(i=e.is("text")?this.findCorrespondingDomText(e):this.mapViewToDom(t.nodeBefore)))return null;n=i.parentNode,o=i.nextSibling}if(Do(o)&&Bo(o))return{parent:o,offset:Vo};return{parent:n,offset:i?er(i)+1:0}}}domToView(t,e={}){if(this.isBlockFiller(t,this.blockFillerMode))return null;const n=this.getParentUIElement(t,this._domToViewMapping);if(n)return n;if(Do(t)){if(Fo(t))return null;{const e=this._processDataFromDomText(t);return""===e?null:new fi(e)}}if(this.isComment(t))return null;{if(this.mapDomToView(t))return this.mapDomToView(t);let n;if(this.isDocumentFragment(t))n=new Ao,e.bind&&this.bindDocumentFragments(t,n);else{const i=e.keepOriginalCase?t.tagName:t.tagName.toLowerCase();n=new ki(i),e.bind&&this.bindElements(t,n);const o=t.attributes;for(let t=o.length-1;t>=0;t--)n._setAttribute(o[t].name,o[t].value)}if(e.withChildren||void 0===e.withChildren)for(const i of this.domChildrenToView(t,e))n._appendChild(i);return n}}*domChildrenToView(t,e={}){for(let n=0;n{const{scrollLeft:e,scrollTop:n}=t;i.push([e,n])}),e.focus(),sr(e,t=>{const[e,n]=i.shift();t.scrollLeft=e,t.scrollTop=n}),tr.window.scrollTo(t,n)}}isElement(t){return t&&t.nodeType==Node.ELEMENT_NODE}isDocumentFragment(t){return t&&t.nodeType==Node.DOCUMENT_FRAGMENT_NODE}isComment(t){return t&&t.nodeType==Node.COMMENT_NODE}isBlockFiller(t){return"br"==this.blockFillerMode?t.isEqualNode(ir):function(t,e){return Do(t)&&" "==t.data&&function(t,e){const n=t.parentNode;return n&&n.tagName&&e.includes(n.tagName.toLowerCase())}(t,e)&&1===t.parentNode.childNodes.length}(t,this.blockElements)}isDomSelectionBackward(t){if(t.isCollapsed)return!1;const e=document.createRange();e.setStart(t.anchorNode,t.anchorOffset),e.setEnd(t.focusNode,t.focusOffset);const n=e.collapsed;return e.detach(),n}getParentUIElement(t){const e=nr(t);for(e.pop();e.length;){const t=e.pop(),n=this._domToViewMapping.get(t);if(n&&n.is("uiElement"))return n}return null}isDomSelectionCorrect(t){return this._isDomSelectionPositionCorrect(t.anchorNode,t.anchorOffset)&&this._isDomSelectionPositionCorrect(t.focusNode,t.focusOffset)}_isDomSelectionPositionCorrect(t,e){if(Do(t)&&Bo(t)&&ethis.preElements.includes(t.name)))return e;if(" "==e.charAt(0)){const n=this._getTouchingViewTextNode(t,!1);!(n&&this._nodeEndsWithSpace(n))&&n||(e=" "+e.substr(1))}if(" "==e.charAt(e.length-1)){const n=this._getTouchingViewTextNode(t,!0);" "!=e.charAt(e.length-2)&&n&&" "!=n.data.charAt(0)||(e=e.substr(0,e.length-1)+" ")}return e.replace(/ {2}/g,"  ")}_nodeEndsWithSpace(t){if(t.getAncestors().some(t=>this.preElements.includes(t.name)))return!1;const e=this._processDataFromViewText(t);return" "==e.charAt(e.length-1)}_processDataFromDomText(t){let e=t.data;if(rr(t,this.preElements))return Uo(t);e=e.replace(/[ \n\t\r]{1,}/g," ");const n=this._getTouchingInlineDomNode(t,!1),i=this._getTouchingInlineDomNode(t,!0),o=this._checkShouldLeftTrimDomText(n),r=this._checkShouldRightTrimDomText(t,i);return o&&(e=e.replace(/^ /,"")),r&&(e=e.replace(/ $/,"")),e=(e=Uo(new Text(e))).replace(/ \u00A0/g," "),(/( |\u00A0)\u00A0$/.test(e)||!i||i.data&&" "==i.data.charAt(0))&&(e=e.replace(/\u00A0$/," ")),o&&(e=e.replace(/^\u00A0/," ")),e}_checkShouldLeftTrimDomText(t){return!t||(!!Wn(t)||/[^\S\u00A0]/.test(t.data.charAt(t.data.length-1)))}_checkShouldRightTrimDomText(t,e){return!e&&!Bo(t)}_getTouchingViewTextNode(t,e){const n=new Ji({startPosition:e?Zi._createAfter(t):Zi._createBefore(t),direction:e?"forward":"backward"});for(const t of n){if(t.item.is("containerElement"))return null;if(t.item.is("br"))return null;if(t.item.is("textProxy"))return t.item}return null}_getTouchingInlineDomNode(t,e){if(!t.parentNode)return null;const n=e?"nextNode":"previousNode",i=t.ownerDocument,o=nr(t)[0],r=i.createTreeWalker(o,NodeFilter.SHOW_TEXT|NodeFilter.SHOW_ELEMENT,{acceptNode:t=>Do(t)?NodeFilter.FILTER_ACCEPT:"BR"==t.tagName?NodeFilter.FILTER_ACCEPT:NodeFilter.FILTER_SKIP});r.currentNode=t;const s=r[n]();if(null!==s){const e=function(t,e){const n=nr(t),i=nr(e);let o=0;for(;n[o]==i[o]&&n[o];)o++;return 0===o?null:n[o-1]}(t,s);if(e&&!rr(t,this.blockElements,e)&&!rr(s,this.blockElements,e))return s}return null}}function rr(t,e,n){let i=nr(t);return n&&(i=i.slice(i.indexOf(n)+1)),i.some(t=>t.tagName&&e.includes(t.tagName.toLowerCase()))}function sr(t,e){for(;t&&t!=tr.document;)e(t),t=t.parentNode}function ar(t){const e=Object.prototype.toString.apply(t);return"[object Window]"==e||"[object global]"==e}var cr=Li({},ei,{listenTo(t,...e){if(Ko(t)||ar(t)){const n=this._getProxyEmitter(t)||new lr(t);n.attach(...e),t=n}ei.listenTo.call(this,t,...e)},stopListening(t,e,n){if(Ko(t)||ar(t)){const e=this._getProxyEmitter(t);if(!e)return;t=e}ei.stopListening.call(this,t,e,n),t instanceof lr&&t.detach(e)},_getProxyEmitter(t){return function(t,e){return t[Xn]&&t[Xn][e]?t[Xn][e].emitter:null}(this,dr(t))}});class lr{constructor(t){ni(this,dr(t)),this._domNode=t}}function dr(t){return t["data-ck-expando"]||(t["data-ck-expando"]=Jn())}Li(lr.prototype,ei,{attach(t,e,n={}){if(this._domListeners&&this._domListeners[t])return;const i=this._createDomListener(t,!!n.useCapture);this._domNode.addEventListener(t,i,!!n.useCapture),this._domListeners||(this._domListeners={}),this._domListeners[t]=i},detach(t){let e;!this._domListeners[t]||(e=this._events[t])&&e.callbacks.length||this._domListeners[t].removeListener()},_createDomListener(t,e){const n=e=>{this.fire(t,e)};return n.removeListener=(()=>{this._domNode.removeEventListener(t,n,e),delete this._domListeners[t]}),n}});class hr{constructor(t){this.view=t,this.document=t.document,this.isEnabled=!1}enable(){this.isEnabled=!0}disable(){this.isEnabled=!1}destroy(){this.disable(),this.stopListening()}}ci(hr,cr);var ur="__lodash_hash_undefined__";var fr=function(t){return this.__data__.set(t,ur),this};var gr=function(t){return this.__data__.has(t)};function mr(t){var e=-1,n=null==t?0:t.length;for(this.__data__=new Pt;++ea))return!1;var l=r.get(t);if(l&&r.get(e))return l==e;var d=-1,h=!0,u=n&_r?new pr:void 0;for(r.set(t,e),r.set(e,t);++d{this.listenTo(t,e,(t,e)=>{this.isEnabled&&this.onDomEvent(e)},{useCapture:this.useCapture})})}fire(t,e,n){this.isEnabled&&this.document.fire(t,new Zr(this.view,e,n))}}class ts extends Xr{constructor(t){super(t),this.domEventType=["keydown","keyup"]}onDomEvent(t){this.fire(t.type,t,{keyCode:t.keyCode,altKey:t.altKey,ctrlKey:t.ctrlKey||t.metaKey,shiftKey:t.shiftKey,get keystroke(){return wo(this)}})}}var es=function(){return i.a.Date.now()},ns="[object Symbol]";var is=function(t){return"symbol"==typeof t||w(t)&&m(t)==ns},os=NaN,rs=/^\s+|\s+$/g,ss=/^[-+]0x[0-9a-f]+$/i,as=/^0b[01]+$/i,cs=/^0o[0-7]+$/i,ls=parseInt;var ds=function(t){if("number"==typeof t)return t;if(is(t))return os;if(B(t)){var e="function"==typeof t.valueOf?t.valueOf():t;t=B(e)?e+"":e}if("string"!=typeof t)return 0===t?t:+t;t=t.replace(rs,"");var n=as.test(t);return n||cs.test(t)?ls(t.slice(2),n?2:8):ss.test(t)?os:+t},hs="Expected a function",us=Math.max,fs=Math.min;var gs=function(t,e,n){var i,o,r,s,a,c,l=0,d=!1,h=!1,u=!0;if("function"!=typeof t)throw new TypeError(hs);function f(e){var n=i,r=o;return i=o=void 0,l=e,s=t.apply(r,n)}function g(t){var n=t-c;return void 0===c||n>=e||n<0||h&&t-l>=r}function m(){var t=es();if(g(t))return p(t);a=setTimeout(m,function(t){var n=e-(t-c);return h?fs(n,r-(t-l)):n}(t))}function p(t){return a=void 0,u&&i?f(t):(i=o=void 0,s)}function b(){var t=es(),n=g(t);if(i=arguments,o=this,c=t,n){if(void 0===a)return function(t){return l=t,a=setTimeout(m,e),d?f(t):s}(c);if(h)return clearTimeout(a),a=setTimeout(m,e),f(c)}return void 0===a&&(a=setTimeout(m,e)),s}return e=ds(e)||0,B(n)&&(d=!!n.leading,r=(h="maxWait"in n)?us(ds(n.maxWait)||0,e):r,u="trailing"in n?!!n.trailing:u),b.cancel=function(){void 0!==a&&clearTimeout(a),l=0,i=c=o=a=void 0},b.flush=function(){return void 0===a?s:p(es())},b};class ms extends hr{constructor(t){super(t),this._fireSelectionChangeDoneDebounced=gs(t=>this.document.fire("selectionChangeDone",t),200)}observe(){const t=this.document;t.on("keydown",(e,n)=>{t.selection.isFake&&function(t){return t==bo.arrowright||t==bo.arrowleft||t==bo.arrowup||t==bo.arrowdown}(n.keyCode)&&this.isEnabled&&(n.preventDefault(),this._handleSelectionMove(n.keyCode))},{priority:"lowest"})}destroy(){super.destroy(),this._fireSelectionChangeDoneDebounced.cancel()}_handleSelectionMove(t){const e=this.document.selection,n=new no(e.getRanges(),{backward:e.isBackward,fake:!1});t!=bo.arrowleft&&t!=bo.arrowup||n.setTo(n.getFirstPosition()),t!=bo.arrowright&&t!=bo.arrowdown||n.setTo(n.getLastPosition());const i={oldSelection:e,newSelection:n,domSelection:null};this.document.fire("selectionChange",i),this._fireSelectionChangeDoneDebounced(i)}}class ps extends hr{constructor(t){super(t),this.mutationObserver=t.getObserver(Jr),this.selection=this.document.selection,this.domConverter=t.domConverter,this._documents=new WeakSet,this._fireSelectionChangeDoneDebounced=gs(t=>this.document.fire("selectionChangeDone",t),200),this._clearInfiniteLoopInterval=setInterval(()=>this._clearInfiniteLoop(),1e3),this._loopbackCounter=0}observe(t){const e=t.ownerDocument;this._documents.has(e)||(this.listenTo(e,"selectionchange",()=>{this._handleSelectionChange(e)}),this._documents.add(e))}destroy(){super.destroy(),clearInterval(this._clearInfiniteLoopInterval),this._fireSelectionChangeDoneDebounced.cancel()}_handleSelectionChange(t){if(!this.isEnabled||!this.document.isFocused&&!this.document.isReadOnly)return;this.mutationObserver.flush();const e=t.defaultView.getSelection(),n=this.domConverter.domSelectionToView(e);if(!(this.selection.isEqual(n)&&this.domConverter.isDomSelectionCorrect(e)||++this._loopbackCounter>60))if(this.selection.isSimilar(n))this.view.forceRender();else{const t={oldSelection:this.selection,newSelection:n,domSelection:e};this.document.fire("selectionChange",t),this._fireSelectionChangeDoneDebounced(t)}}_clearInfiniteLoop(){this._loopbackCounter=0}}class bs extends Xr{constructor(t){super(t),this.domEventType=["focus","blur"],this.useCapture=!0;const e=this.document;e.on("focus",()=>{e.isFocused=!0,this._renderTimeoutId=setTimeout(()=>t.forceRender(),50)}),e.on("blur",(n,i)=>{const o=e.selection.editableElement;null!==o&&o!==i.target||(e.isFocused=!1,t.forceRender())})}onDomEvent(t){this.fire(t.type,t)}destroy(){this._renderTimeoutId&&clearTimeout(this._renderTimeoutId),super.destroy()}}class ws extends Xr{constructor(t){super(t),this.domEventType=["compositionstart","compositionupdate","compositionend"];const e=this.document;e.on("compositionstart",()=>{e.isComposing=!0}),e.on("compositionend",()=>{e.isComposing=!1})}onDomEvent(t){this.fire(t.type,t)}}class ks extends Xr{constructor(t){super(t),this.domEventType=["beforeinput"]}onDomEvent(t){this.fire(t.type,t)}}function _s(t){return"[object Range]"==Object.prototype.toString.apply(t)}function vs(t){const e=t.ownerDocument.defaultView.getComputedStyle(t);return{top:parseInt(e.borderTopWidth,10),right:parseInt(e.borderRightWidth,10),bottom:parseInt(e.borderBottomWidth,10),left:parseInt(e.borderLeftWidth,10)}}const ys=["top","right","bottom","left","width","height"];class xs{constructor(t){const e=_s(t);if(Object.defineProperty(this,"_source",{value:t._source||t,writable:!0,enumerable:!1}),Wn(t)||e)As(this,e?xs.getDomRangeRects(t)[0]:t.getBoundingClientRect());else if(ar(t)){const{innerWidth:e,innerHeight:n}=t;As(this,{top:0,right:e,bottom:n,left:0,width:e,height:n})}else As(this,t)}clone(){return new xs(this)}moveTo(t,e){return this.top=e,this.right=t+this.width,this.bottom=e+this.height,this.left=t,this}moveBy(t,e){return this.top+=e,this.right+=t,this.left+=t,this.bottom+=e,this}getIntersection(t){const e={top:Math.max(this.top,t.top),right:Math.min(this.right,t.right),bottom:Math.min(this.bottom,t.bottom),left:Math.max(this.left,t.left)};return e.width=e.right-e.left,e.height=e.bottom-e.top,e.width<0||e.height<0?null:new xs(e)}getIntersectionArea(t){const e=this.getIntersection(t);return e?e.getArea():0}getArea(){return this.width*this.height}getVisible(){const t=this._source;let e=this.clone();if(!Ts(t)){let n=t.parentNode||t.commonAncestorContainer;for(;n&&!Ts(n);){const t=new xs(n),i=e.getIntersection(t);if(!i)return null;i.getArea()Ds(t,i));const s=Ds(t,i);if(Ps(i,s,e),i.parent!=i){if(o=i.frameElement,i=i.parent,!o)return}else i=null}}function Ps(t,e,n){const i=e.clone().moveBy(0,n),o=e.clone().moveBy(0,-n),r=new xs(t).excludeScrollbarsAndBorders();if(![o,i].every(t=>r.contains(t))){let{scrollX:s,scrollY:a}=t;Es(o,r)?a-=r.top-e.top+n:Ms(i,r)&&(a+=e.bottom-r.bottom+n),Is(e,r)?s-=r.left-e.left+n:Ns(e,r)&&(s+=e.right-r.right+n),t.scrollTo(s,a)}}function Ss(t,e){const n=Os(t);let i,o;for(;t!=n.document.body;)o=e(),(i=new xs(t).excludeScrollbarsAndBorders()).contains(o)||(Es(o,i)?t.scrollTop-=i.top-o.top:Ms(o,i)&&(t.scrollTop+=o.bottom-i.bottom),Is(o,i)?t.scrollLeft-=i.left-o.left:Ns(o,i)&&(t.scrollLeft+=o.right-i.right)),t=t.parentNode}function Ms(t,e){return t.bottom>e.bottom}function Es(t,e){return t.tope.right}function Os(t){return _s(t)?t.startContainer.ownerDocument.defaultView:t.ownerDocument.defaultView}function Rs(t){if(_s(t)){let e=t.commonAncestorContainer;return Do(e)&&(e=e.parentNode),e}return t.parentNode}function Ds(t,e){const n=Os(t),i=new xs(t);if(n===e)return i;{let t=n;for(;t!=e;){const e=t.frameElement,n=new xs(e).excludeScrollbarsAndBorders();i.moveBy(n.left,n.top),t=t.parent}}return i}Object.assign({},{scrollViewportToShowTarget:Cs,scrollAncestorsToShowTarget:function(t){Ss(Rs(t),()=>new xs(t))}});class Ls{constructor(){this.document=new ro,this.domConverter=new or,this.domRoots=new Map,this.set("isRenderingInProgress",!1),this._renderer=new Jo(this.domConverter,this.document.selection),this._renderer.bind("isFocused").to(this.document),this._initialDomRootAttributes=new WeakMap,this._observers=new Map,this._ongoingChange=!1,this._postFixersInProgress=!1,this._renderingDisabled=!1,this._hasChangedSinceTheLastRendering=!1,this._writer=new To(this.document),this.addObserver(Jr),this.addObserver(ps),this.addObserver(bs),this.addObserver(ts),this.addObserver(ms),this.addObserver(ws),go.isAndroid&&this.addObserver(ks),function(t){t.document.on("keydown",Ho)}(this),yo(this),this.on("render",()=>{this._render(),this.document.fire("layoutChanged"),this._hasChangedSinceTheLastRendering=!1}),this.listenTo(this.document.selection,"change",()=>{this._hasChangedSinceTheLastRendering=!0})}attachDomRoot(t,e="main"){const n=this.document.getRoot(e);n._name=t.tagName.toLowerCase();const i={};for(const{name:e,value:o}of Array.from(t.attributes))i[e]=o,"class"===e?this._writer.addClass(o.split(" "),n):this._writer.setAttribute(e,o,n);this._initialDomRootAttributes.set(t,i);const o=()=>{this._writer.setAttribute("contenteditable",!n.isReadOnly,n),n.isReadOnly?this._writer.addClass("ck-read-only",n):this._writer.removeClass("ck-read-only",n)};o(),this.domRoots.set(e,t),this.domConverter.bindElements(t,n),this._renderer.markToSync("children",n),this._renderer.markToSync("attributes",n),this._renderer.domDocuments.add(t.ownerDocument),n.on("change:children",(t,e)=>this._renderer.markToSync("children",e)),n.on("change:attributes",(t,e)=>this._renderer.markToSync("attributes",e)),n.on("change:text",(t,e)=>this._renderer.markToSync("text",e)),n.on("change:isReadOnly",()=>this.change(o)),n.on("change",()=>{this._hasChangedSinceTheLastRendering=!0});for(const n of this._observers.values())n.observe(t,e)}detachDomRoot(t){const e=this.domRoots.get(t);Array.from(e.attributes).forEach(({name:t})=>e.removeAttribute(t));const n=this._initialDomRootAttributes.get(e);for(const t in n)e.setAttribute(t,n[t]);this.domRoots.delete(t),this.domConverter.unbindDomElement(e)}getDomRoot(t="main"){return this.domRoots.get(t)}addObserver(t){let e=this._observers.get(t);if(e)return e;e=new t(this),this._observers.set(t,e);for(const[t,n]of this.domRoots)e.observe(n,t);return e.enable(),e}getObserver(t){return this._observers.get(t)}disableObservers(){for(const t of this._observers.values())t.disable()}enableObservers(){for(const t of this._observers.values())t.enable()}scrollToTheSelection(){const t=this.document.selection.getFirstRange();t&&Cs({target:this.domConverter.viewRangeToDom(t),viewportOffset:20})}focus(){if(!this.document.isFocused){const t=this.document.selection.editableElement;t&&(this.domConverter.focus(t),this.forceRender())}}change(t){if(this.isRenderingInProgress||this._postFixersInProgress)throw new Gn.b("cannot-change-view-tree: Attempting to make changes to the view when it is in an incorrect state: rendering or post-fixers are in progress. This may cause some unexpected behavior and inconsistency between the DOM and the view.",this);try{if(this._ongoingChange)return t(this._writer);this._ongoingChange=!0;const e=t(this._writer);return this._ongoingChange=!1,!this._renderingDisabled&&this._hasChangedSinceTheLastRendering&&(this._postFixersInProgress=!0,this.document._callPostFixers(this._writer),this._postFixersInProgress=!1,this.fire("render")),e}catch(t){Gn.b.rethrowUnexpectedError(t,this)}}forceRender(){this._hasChangedSinceTheLastRendering=!0,this.change(()=>{})}destroy(){for(const t of this._observers.values())t.destroy();this.document.destroy(),this.stopListening()}createPositionAt(t,e){return Zi._createAt(t,e)}createPositionAfter(t){return Zi._createAfter(t)}createPositionBefore(t){return Zi._createBefore(t)}createRange(t,e){return new Xi(t,e)}createRangeOn(t){return Xi._createOn(t)}createRangeIn(t){return Xi._createIn(t)}createSelection(t,e,n){return new no(t,e,n)}_disableRendering(t){this._renderingDisabled=t,0==t&&this.change(()=>{})}_render(){this.isRenderingInProgress=!0,this.disableObservers(),this._renderer.render(),this.enableObservers(),this.isRenderingInProgress=!1}}function js(t){return T(t)?mi(t):new Map(t)}ci(Ls,Fi);class Vs{constructor(t){this.parent=null,this._attrs=js(t)}get index(){let t;if(!this.parent)return null;if(null===(t=this.parent.getChildIndex(this)))throw new Gn.b("model-node-not-found-in-parent: The node's parent does not contain this node.",this);return t}get startOffset(){let t;if(!this.parent)return null;if(null===(t=this.parent.getChildStartOffset(this)))throw new Gn.b("model-node-not-found-in-parent: The node's parent does not contain this node.",this);return t}get offsetSize(){return 1}get endOffset(){return this.parent?this.startOffset+this.offsetSize:null}get nextSibling(){const t=this.index;return null!==t&&this.parent.getChild(t+1)||null}get previousSibling(){const t=this.index;return null!==t&&this.parent.getChild(t-1)||null}get root(){let t=this;for(;t.parent;)t=t.parent;return t}get document(){return this.root==this?null:this.root.document||null}getPath(){const t=[];let e=this;for(;e.parent;)t.unshift(e.startOffset),e=e.parent;return t}getAncestors(t={includeSelf:!1,parentFirst:!1}){const e=[];let n=t.includeSelf?this:this.parent;for(;n;)e[t.parentFirst?"push":"unshift"](n),n=n.parent;return e}getCommonAncestor(t,e={}){const n=this.getAncestors(e),i=t.getAncestors(e);let o=0;for(;n[o]==i[o]&&n[o];)o++;return 0===o?null:n[o-1]}isBefore(t){if(this==t)return!1;if(this.root!==t.root)return!1;const e=this.getPath(),n=t.getPath(),i=li(e,n);switch(i){case"prefix":return!0;case"extension":return!1;default:return e[i](t[e[0]]=e[1],t),{})),t}is(t){return"node"==t||"model:node"==t}_clone(){return new Vs(this._attrs)}_remove(){this.parent._removeChildren(this.index)}_setAttribute(t,e){this._attrs.set(t,e)}_setAttributesTo(t){this._attrs=js(t)}_removeAttribute(t){return this._attrs.delete(t)}_clearAttributes(){this._attrs.clear()}}class zs extends Vs{constructor(t,e){super(e),this._data=t||""}get offsetSize(){return this.data.length}get data(){return this._data}is(t){return"text"==t||"model:text"==t||super.is(t)}toJSON(){const t=super.toJSON();return t.data=this.data,t}_clone(){return new zs(this.data,this.getAttributes())}static fromJSON(t){return new zs(t.data,t.attributes)}}class Bs{constructor(t,e,n){if(this.textNode=t,e<0||e>t.offsetSize)throw new Gn.b("model-textproxy-wrong-offsetintext: Given offsetInText value is incorrect.",this);if(n<0||e+n>t.offsetSize)throw new Gn.b("model-textproxy-wrong-length: Given length value is incorrect.",this);this.data=t.data.substring(e,e+n),this.offsetInText=e}get startOffset(){return null!==this.textNode.startOffset?this.textNode.startOffset+this.offsetInText:null}get offsetSize(){return this.data.length}get endOffset(){return null!==this.startOffset?this.startOffset+this.offsetSize:null}get isPartial(){return this.offsetSize!==this.textNode.offsetSize}get parent(){return this.textNode.parent}get root(){return this.textNode.root}get document(){return this.textNode.document}is(t){return"textProxy"==t||"model:textProxy"==t}getPath(){const t=this.textNode.getPath();return t.length>0&&(t[t.length-1]+=this.offsetInText),t}getAncestors(t={includeSelf:!1,parentFirst:!1}){const e=[];let n=t.includeSelf?this:this.parent;for(;n;)e[t.parentFirst?"push":"unshift"](n),n=n.parent;return e}hasAttribute(t){return this.textNode.hasAttribute(t)}getAttribute(t){return this.textNode.getAttribute(t)}getAttributes(){return this.textNode.getAttributes()}getAttributeKeys(){return this.textNode.getAttributeKeys()}}class Fs{constructor(t){this._nodes=[],t&&this._insertNodes(0,t)}[Symbol.iterator](){return this._nodes[Symbol.iterator]()}get length(){return this._nodes.length}get maxOffset(){return this._nodes.reduce((t,e)=>t+e.offsetSize,0)}getNode(t){return this._nodes[t]||null}getNodeIndex(t){const e=this._nodes.indexOf(t);return-1==e?null:e}getNodeStartOffset(t){const e=this.getNodeIndex(t);return null===e?null:this._nodes.slice(0,e).reduce((t,e)=>t+e.offsetSize,0)}indexToOffset(t){if(t==this._nodes.length)return this.maxOffset;const e=this._nodes[t];if(!e)throw new Gn.b("model-nodelist-index-out-of-bounds: Given index cannot be found in the node list.",this);return this.getNodeStartOffset(e)}offsetToIndex(t){let e=0;for(const n of this._nodes){if(t>=e&&tt.toJSON())}}class Us extends Vs{constructor(t,e,n){super(e),this.name=t,this._children=new Fs,n&&this._insertChild(0,n)}get childCount(){return this._children.length}get maxOffset(){return this._children.maxOffset}get isEmpty(){return 0===this.childCount}is(t,e=null){const n=t.replace(/^model:/,"");return e?"element"==n&&e==this.name:"element"==n||n==this.name||super.is(t)}getChild(t){return this._children.getNode(t)}getChildren(){return this._children[Symbol.iterator]()}getChildIndex(t){return this._children.getNodeIndex(t)}getChildStartOffset(t){return this._children.getNodeStartOffset(t)}offsetToIndex(t){return this._children.offsetToIndex(t)}getNodeByPath(t){let e=this;for(const n of t)e=e.getChild(e.offsetToIndex(n));return e}toJSON(){const t=super.toJSON();if(t.name=this.name,this._children.length>0){t.children=[];for(const e of this._children)t.children.push(e.toJSON())}return t}_clone(t=!1){const e=t?Array.from(this._children).map(t=>t._clone(!0)):null;return new Us(this.name,this.getAttributes(),e)}_appendChild(t){this._insertChild(this.childCount,t)}_insertChild(t,e){const n=function(t){if("string"==typeof t)return[new zs(t)];pi(t)||(t=[t]);return Array.from(t).map(t=>"string"==typeof t?new zs(t):t instanceof Bs?new zs(t.data,t.getAttributes()):t)}(e);for(const t of n)null!==t.parent&&t._remove(),t.parent=this;this._children._insertNodes(t,n)}_removeChildren(t,e=1){const n=this._children._removeNodes(t,e);for(const t of n)t.parent=null;return n}static fromJSON(t){let e=null;if(t.children){e=[];for(const n of t.children)n.name?e.push(Us.fromJSON(n)):e.push(zs.fromJSON(n))}return new Us(t.name,t.attributes,e)}}class Hs{constructor(t={}){if(!t.boundaries&&!t.startPosition)throw new Gn.b("model-tree-walker-no-start-position: Neither boundaries nor starting position have been defined.",null);const e=t.direction||"forward";if("forward"!=e&&"backward"!=e)throw new Gn.b("model-tree-walker-unknown-direction: Only `backward` and `forward` direction allowed.",t,{direction:e});this.direction=e,this.boundaries=t.boundaries||null,t.startPosition?this.position=t.startPosition.clone():this.position=Ys._createAt(this.boundaries["backward"==this.direction?"end":"start"]),this.position.stickiness="toNone",this.singleCharacters=!!t.singleCharacters,this.shallow=!!t.shallow,this.ignoreElementEnd=!!t.ignoreElementEnd,this._boundaryStartParent=this.boundaries?this.boundaries.start.parent:null,this._boundaryEndParent=this.boundaries?this.boundaries.end.parent:null,this._visitedParent=this.position.parent}[Symbol.iterator](){return this}skip(t){let e,n,i,o;do{i=this.position,o=this._visitedParent,({done:e,value:n}=this.next())}while(!e&&t(n));e||(this.position=i,this._visitedParent=o)}next(){return"forward"==this.direction?this._next():this._previous()}_next(){const t=this.position,e=this.position.clone(),n=this._visitedParent;if(null===n.parent&&e.offset===n.maxOffset)return{done:!0};if(n===this._boundaryEndParent&&e.offset==this.boundaries.end.offset)return{done:!0};const i=e.textNode?e.textNode:e.nodeAfter;if(i instanceof Us)return this.shallow?e.offset++:(e.path.push(0),this._visitedParent=i),this.position=e,qs("elementStart",i,t,e,1);if(i instanceof zs){let o;if(this.singleCharacters)o=1;else{let t=i.endOffset;this._boundaryEndParent==n&&this.boundaries.end.offsett&&(t=this.boundaries.start.offset),o=e.offset-t}const r=e.offset-i.startOffset,s=new Bs(i,r-o,o);return e.offset-=o,this.position=e,qs("text",s,t,e,o)}return e.path.pop(),this.position=e,this._visitedParent=n.parent,qs("elementStart",n,t,e,1)}}function qs(t,e,n,i,o){return{done:!1,value:{type:t,item:e,previousPosition:n,nextPosition:i,length:o}}}var Ws=function(t){var e=null==t?0:t.length;return e?t[e-1]:void 0};class Ys{constructor(t,e,n="toNone"){if(!t.is("element")&&!t.is("documentFragment"))throw new Gn.b("model-position-root-invalid: Position root invalid.",t);if(!(e instanceof Array)||0===e.length)throw new Gn.b("model-position-path-incorrect-format: Position path must be an array with at least one item.",t,{path:e});e=t.getPath().concat(e),t=t.root,this.root=t,this.path=e,this.stickiness=n}get offset(){return Ws(this.path)}set offset(t){this.path[this.path.length-1]=t}get parent(){let t=this.root;for(let e=0;en.path.length){if(e.offset!==i.maxOffset)return!1;e.path=e.path.slice(0,-1),i=i.parent,e.offset++}else{if(0!==n.offset)return!1;n.path=n.path.slice(0,-1)}}}is(t){return"position"==t||"model:position"==t}hasSameParentAs(t){if(this.root!==t.root)return!1;return"same"==li(this.getParentPath(),t.getParentPath())}getTransformedByOperation(t){let e;switch(t.type){case"insert":e=this._getTransformedByInsertOperation(t);break;case"move":case"remove":case"reinsert":e=this._getTransformedByMoveOperation(t);break;case"split":e=this._getTransformedBySplitOperation(t);break;case"merge":e=this._getTransformedByMergeOperation(t);break;default:e=Ys._createAt(this)}return e}_getTransformedByInsertOperation(t){return this._getTransformedByInsertion(t.position,t.howMany)}_getTransformedByMoveOperation(t){return this._getTransformedByMove(t.sourcePosition,t.targetPosition,t.howMany)}_getTransformedBySplitOperation(t){const e=t.movedRange;return e.containsPosition(this)||e.start.isEqual(this)&&"toNext"==this.stickiness?this._getCombined(t.splitPosition,t.moveTargetPosition):t.graveyardPosition?this._getTransformedByMove(t.graveyardPosition,t.insertionPosition,1):this._getTransformedByInsertion(t.insertionPosition,1)}_getTransformedByMergeOperation(t){const e=t.movedRange;let n;return e.containsPosition(this)||e.start.isEqual(this)?(n=this._getCombined(t.sourcePosition,t.targetPosition),t.sourcePosition.isBefore(t.targetPosition)&&(n=n._getTransformedByDeletion(t.deletionPosition,1))):n=this.isEqual(t.deletionPosition)?Ys._createAt(t.deletionPosition):this._getTransformedByMove(t.deletionPosition,t.graveyardPosition,1),n}_getTransformedByDeletion(t,e){const n=Ys._createAt(this);if(this.root!=t.root)return n;if("same"==li(t.getParentPath(),this.getParentPath())){if(t.offsetthis.offset)return null;n.offset-=e}}else if("prefix"==li(t.getParentPath(),this.getParentPath())){const i=t.path.length-1;if(t.offset<=this.path[i]){if(t.offset+e>this.path[i])return null;n.path[i]-=e}}return n}_getTransformedByInsertion(t,e){const n=Ys._createAt(this);if(this.root!=t.root)return n;if("same"==li(t.getParentPath(),this.getParentPath()))(t.offsete+1;){const e=i.maxOffset-n.offset;0!==e&&t.push(new $s(n,n.getShiftedBy(e))),n.path=n.path.slice(0,-1),n.offset++,i=i.parent}for(;n.path.length<=this.end.path.length;){const e=this.end.path[n.path.length-1],i=e-n.offset;0!==i&&t.push(new $s(n,n.getShiftedBy(i))),n.offset=e,n.path.push(0)}return t}getWalker(t={}){return t.boundaries=this,new Hs(t)}*getItems(t={}){t.boundaries=this,t.ignoreElementEnd=!0;const e=new Hs(t);for(const t of e)yield t.item}*getPositions(t={}){t.boundaries=this;const e=new Hs(t);yield e.position;for(const t of e)yield t.nextPosition}getTransformedByOperation(t){switch(t.type){case"insert":return this._getTransformedByInsertOperation(t);case"move":case"remove":case"reinsert":return this._getTransformedByMoveOperation(t);case"split":return[this._getTransformedBySplitOperation(t)];case"merge":return[this._getTransformedByMergeOperation(t)]}return[new $s(this.start,this.end)]}getTransformedByOperations(t){const e=[new $s(this.start,this.end)];for(const n of t)for(let t=0;t0?new this(n,i):new this(i,n)}static _createIn(t){return new this(Ys._createAt(t,0),Ys._createAt(t,t.maxOffset))}static _createOn(t){return this._createFromPositionAndShift(Ys._createBefore(t),t.offsetSize)}static _createFromRanges(t){if(0===t.length)throw new Gn.b("range-create-from-ranges-empty-array: At least one range has to be passed.",null);if(1==t.length)return t[0].clone();const e=t[0];t.sort((t,e)=>t.start.isAfter(e.start)?1:-1);const n=t.indexOf(e),i=new this(e.start,e.end);if(n>0)for(let e=n-1;t[e].end.isEqual(i.start);e++)i.start=Ys._createAt(t[e].start);for(let e=n+1;e{if(e.viewPosition)return;const n=this._modelToViewMapping.get(e.modelPosition.parent);e.viewPosition=this._findPositionIn(n,e.modelPosition.offset)},{priority:"low"}),this.on("viewToModelPosition",(t,e)=>{if(e.modelPosition)return;const n=this.findMappedViewAncestor(e.viewPosition),i=this._viewToModelMapping.get(n),o=this._toModelOffset(e.viewPosition.parent,e.viewPosition.offset,n);e.modelPosition=Ys._createAt(i,o)},{priority:"low"})}bindElements(t,e){this._modelToViewMapping.set(t,e),this._viewToModelMapping.set(e,t)}unbindViewElement(t){const e=this.toModelElement(t);if(this._viewToModelMapping.delete(t),this._elementToMarkerNames.has(t))for(const e of this._elementToMarkerNames.get(t))this._unboundMarkerNames.add(e);this._modelToViewMapping.get(e)==t&&this._modelToViewMapping.delete(e)}unbindModelElement(t){const e=this.toViewElement(t);this._modelToViewMapping.delete(t),this._viewToModelMapping.get(e)==t&&this._viewToModelMapping.delete(e)}bindElementToMarker(t,e){const n=this._markerNameToElements.get(e)||new Set;n.add(t);const i=this._elementToMarkerNames.get(t)||new Set;i.add(e),this._markerNameToElements.set(e,n),this._elementToMarkerNames.set(t,i)}unbindElementFromMarkerName(t,e){const n=this._markerNameToElements.get(e);n&&(n.delete(t),0==n.size&&this._markerNameToElements.delete(e));const i=this._elementToMarkerNames.get(t);i&&(i.delete(e),0==i.size&&this._elementToMarkerNames.delete(t))}flushUnboundMarkerNames(){const t=Array.from(this._unboundMarkerNames);return this._unboundMarkerNames.clear(),t}clearBindings(){this._modelToViewMapping=new WeakMap,this._viewToModelMapping=new WeakMap,this._markerNameToElements=new Map,this._elementToMarkerNames=new Map,this._unboundMarkerNames=new Set}toModelElement(t){return this._viewToModelMapping.get(t)}toViewElement(t){return this._modelToViewMapping.get(t)}toModelRange(t){return new $s(this.toModelPosition(t.start),this.toModelPosition(t.end))}toViewRange(t){return new Xi(this.toViewPosition(t.start),this.toViewPosition(t.end))}toModelPosition(t){const e={viewPosition:t,mapper:this};return this.fire("viewToModelPosition",e),e.modelPosition}toViewPosition(t,e={isPhantom:!1}){const n={modelPosition:t,mapper:this,isPhantom:e.isPhantom};return this.fire("modelToViewPosition",n),n.viewPosition}markerNameToElements(t){const e=this._markerNameToElements.get(t);if(!e)return null;const n=new Set;for(const t of e)if(t.is("attributeElement"))for(const e of t.getElementsWithSameId())n.add(e);else n.add(t);return n}registerViewToModelLength(t,e){this._viewToModelLengthCallbacks.set(t,e)}findMappedViewAncestor(t){let e=t.parent;for(;!this._viewToModelMapping.has(e);)e=e.parent;return e}_toModelOffset(t,e,n){if(n!=t){return this._toModelOffset(t.parent,t.index,n)+this._toModelOffset(t,e,t)}if(t.is("text"))return e;let i=0;for(let n=0;n1?e[0]+":"+e[1]:e[0]}class Js{constructor(t){this.conversionApi=Li({dispatcher:this},t)}convertChanges(t,e,n){for(const e of t.getMarkersToRemove())this.convertMarkerRemove(e.name,e.range,n);for(const e of t.getChanges())"insert"==e.type?this.convertInsert($s._createFromPositionAndShift(e.position,e.length),n):"remove"==e.type?this.convertRemove(e.position,e.length,e.name,n):this.convertAttribute(e.range,e.attributeKey,e.attributeOldValue,e.attributeNewValue,n);for(const t of this.conversionApi.mapper.flushUnboundMarkerNames()){const i=e.get(t).getRange();this.convertMarkerRemove(t,i,n),this.convertMarkerAdd(t,i,n)}for(const e of t.getMarkersToAdd())this.convertMarkerAdd(e.name,e.range,n)}convertInsert(t,e){this.conversionApi.writer=e,this.conversionApi.consumable=this._createInsertConsumable(t);for(const e of t){const t=e.item,n={item:t,range:$s._createFromPositionAndShift(e.previousPosition,e.length)};this._testAndFire("insert",n);for(const e of t.getAttributeKeys())n.attributeKey=e,n.attributeOldValue=null,n.attributeNewValue=t.getAttribute(e),this._testAndFire(`attribute:${e}`,n)}this._clearConversionApi()}convertRemove(t,e,n,i){this.conversionApi.writer=i,this.fire("remove:"+n,{position:t,length:e},this.conversionApi),this._clearConversionApi()}convertAttribute(t,e,n,i,o){this.conversionApi.writer=o,this.conversionApi.consumable=this._createConsumableForRange(t,`attribute:${e}`);for(const o of t){const t={item:o.item,range:$s._createFromPositionAndShift(o.previousPosition,o.length),attributeKey:e,attributeOldValue:n,attributeNewValue:i};this._testAndFire(`attribute:${e}`,t)}this._clearConversionApi()}convertSelection(t,e,n){const i=Array.from(e.getMarkersAtPosition(t.getFirstPosition()));if(this.conversionApi.writer=n,this.conversionApi.consumable=this._createSelectionConsumable(t,i),this.fire("selection",{selection:t},this.conversionApi),t.isCollapsed){for(const e of i){const n=e.getRange();if(!Zs(t.getFirstPosition(),e,this.conversionApi.mapper))continue;const i={item:t,markerName:e.name,markerRange:n};this.conversionApi.consumable.test(t,"addMarker:"+e.name)&&this.fire("addMarker:"+e.name,i,this.conversionApi)}for(const e of t.getAttributeKeys()){const n={item:t,range:t.getFirstRange(),attributeKey:e,attributeOldValue:null,attributeNewValue:t.getAttribute(e)};this.conversionApi.consumable.test(t,"attribute:"+n.attributeKey)&&this.fire("attribute:"+n.attributeKey+":$text",n,this.conversionApi)}this._clearConversionApi()}}convertMarkerAdd(t,e,n){if(!e.root.document||"$graveyard"==e.root.rootName)return;this.conversionApi.writer=n;const i="addMarker:"+t,o=new Qs;if(o.add(e,i),this.conversionApi.consumable=o,this.fire(i,{markerName:t,markerRange:e},this.conversionApi),o.test(e,i)){this.conversionApi.consumable=this._createConsumableForRange(e,i);for(const n of e.getItems()){if(!this.conversionApi.consumable.test(n,i))continue;const o={item:n,range:$s._createOn(n),markerName:t,markerRange:e};this.fire(i,o,this.conversionApi)}this._clearConversionApi()}}convertMarkerRemove(t,e,n){e.root.document&&"$graveyard"!=e.root.rootName&&(this.conversionApi.writer=n,this.fire("removeMarker:"+t,{markerName:t,markerRange:e},this.conversionApi),this._clearConversionApi())}_createInsertConsumable(t){const e=new Qs;for(const n of t){const t=n.item;e.add(t,"insert");for(const n of t.getAttributeKeys())e.add(t,"attribute:"+n)}return e}_createConsumableForRange(t,e){const n=new Qs;for(const i of t.getItems())n.add(i,e);return n}_createSelectionConsumable(t,e){const n=new Qs;n.add(t,"selection");for(const i of e)n.add(t,"addMarker:"+i.name);for(const e of t.getAttributeKeys())n.add(t,"attribute:"+e);return n}_testAndFire(t,e){if(!this.conversionApi.consumable.test(e.item,t))return;const n=e.item.name||"$text";this.fire(t+":"+n,e,this.conversionApi)}_clearConversionApi(){delete this.conversionApi.writer,delete this.conversionApi.consumable}}function Zs(t,e,n){const i=e.getRange(),o=Array.from(t.getAncestors());return o.shift(),o.reverse(),!o.some(t=>{if(i.containsItem(t)){return!!n.toViewElement(t).getCustomProperty("addHighlight")}})}ci(Js,ei);class Xs{constructor(t,e,n){this._lastRangeBackward=!1,this._ranges=[],this._attrs=new Map,t&&this.setTo(t,e,n)}get anchor(){if(this._ranges.length>0){const t=this._ranges[this._ranges.length-1];return this._lastRangeBackward?t.end:t.start}return null}get focus(){if(this._ranges.length>0){const t=this._ranges[this._ranges.length-1];return this._lastRangeBackward?t.start:t.end}return null}get isCollapsed(){return 1===this._ranges.length&&this._ranges[0].isCollapsed}get rangeCount(){return this._ranges.length}get isBackward(){return!this.isCollapsed&&this._lastRangeBackward}isEqual(t){if(this.rangeCount!=t.rangeCount)return!1;if(0===this.rangeCount)return!0;if(!this.anchor.isEqual(t.anchor)||!this.focus.isEqual(t.focus))return!1;for(const e of this._ranges){let n=!1;for(const i of t._ranges)if(e.isEqual(i)){n=!0;break}if(!n)return!1}return!0}*getRanges(){for(const t of this._ranges)yield new $s(t.start,t.end)}getFirstRange(){let t=null;for(const e of this._ranges)t&&!e.start.isBefore(t.start)||(t=e);return t?new $s(t.start,t.end):null}getLastRange(){let t=null;for(const e of this._ranges)t&&!e.end.isAfter(t.end)||(t=e);return t?new $s(t.start,t.end):null}getFirstPosition(){const t=this.getFirstRange();return t?t.start.clone():null}getLastPosition(){const t=this.getLastRange();return t?t.end.clone():null}setTo(t,e,n){if(null===t)this._setRanges([]);else if(t instanceof Xs)this._setRanges(t.getRanges(),t.isBackward);else if(t&&"function"==typeof t.getRanges)this._setRanges(t.getRanges(),t.isBackward);else if(t instanceof $s)this._setRanges([t],!!e&&!!e.backward);else if(t instanceof Ys)this._setRanges([new $s(t)]);else if(t instanceof Vs){const i=!!n&&!!n.backward;let o;if("in"==e)o=$s._createIn(t);else if("on"==e)o=$s._createOn(t);else{if(void 0===e)throw new Gn.b("model-selection-setTo-required-second-parameter: selection.setTo requires the second parameter when the first parameter is a node.",[this,t]);o=new $s(Ys._createAt(t,e))}this._setRanges([o],i)}else{if(!pi(t))throw new Gn.b("model-selection-setTo-not-selectable: Cannot set the selection to the given place.",[this,t]);this._setRanges(t,e&&!!e.backward)}}_setRanges(t,e=!1){const n=(t=Array.from(t)).some(e=>{if(!(e instanceof $s))throw new Gn.b("model-selection-set-ranges-not-range: Selection range set to an object that is not an instance of model.Range.",[this,t]);return this._ranges.every(t=>!t.isEqual(e))});if(t.length!==this._ranges.length||n){this._removeAllRanges();for(const e of t)this._pushRange(e);this._lastRangeBackward=!!e,this.fire("change:range",{directChange:!0})}}setFocus(t,e){if(null===this.anchor)throw new Gn.b("model-selection-setFocus-no-ranges: Cannot set selection focus if there are no ranges in selection.",[this,t]);const n=Ys._createAt(t,e);if("same"==n.compareWith(this.focus))return;const i=this.anchor;this._ranges.length&&this._popRange(),"before"==n.compareWith(i)?(this._pushRange(new $s(n,i)),this._lastRangeBackward=!0):(this._pushRange(new $s(i,n)),this._lastRangeBackward=!1),this.fire("change:range",{directChange:!0})}getAttribute(t){return this._attrs.get(t)}getAttributes(){return this._attrs.entries()}getAttributeKeys(){return this._attrs.keys()}hasAttribute(t){return this._attrs.has(t)}removeAttribute(t){this.hasAttribute(t)&&(this._attrs.delete(t),this.fire("change:attribute",{attributeKeys:[t],directChange:!0}))}setAttribute(t,e){this.getAttribute(t)!==e&&(this._attrs.set(t,e),this.fire("change:attribute",{attributeKeys:[t],directChange:!0}))}getSelectedElement(){if(1!==this.rangeCount)return null;const t=this.getFirstRange(),e=t.start.nodeAfter,n=t.end.nodeBefore;return e instanceof Us&&e==n?e:null}is(t){return"selection"==t||"model:selection"==t}*getSelectedBlocks(){const t=new WeakSet;for(const e of this.getRanges()){const n=na(e.start,t);n&&ia(n,e)&&(yield n);for(const n of e.getWalker()){const i=n.item;"elementEnd"==n.type&&ea(i,t,e)&&(yield i)}const i=na(e.end,t);i&&!e.end.isTouching(Ys._createAt(i,0))&&ia(i,e)&&(yield i)}}containsEntireContent(t=this.anchor.root){const e=Ys._createAt(t,0),n=Ys._createAt(t,"end");return e.isTouching(this.getFirstPosition())&&n.isTouching(this.getLastPosition())}_pushRange(t){this._checkRange(t),this._ranges.push(new $s(t.start,t.end))}_checkRange(t){for(let e=0;e0;)this._popRange()}_popRange(){this._ranges.pop()}}function ta(t,e){return!e.has(t)&&(e.add(t),t.document.model.schema.isBlock(t)&&t.parent)}function ea(t,e,n){return ta(t,e)&&ia(t,n)}function na(t,e){const n=t.parent.document.model.schema,i=t.parent.getAncestors({parentFirst:!0,includeSelf:!0});let o=!1;const r=i.find(t=>!o&&(!(o=n.isLimit(t))&&ta(t,e)));return i.forEach(t=>e.add(t)),r}function ia(t,e){const n=function(t){const e=t.document.model.schema;let n=t.parent;for(;n;){if(e.isBlock(n))return n;n=n.parent}}(t);return!n||!e.containsRange($s._createOn(n),!0)}ci(Xs,ei);class oa extends $s{constructor(t,e){super(t,e),function(){this.listenTo(this.root.document.model,"applyOperation",(t,e)=>{const n=e[0];n.isDocumentOperation&&function(t){const e=this.getTransformedByOperation(t),n=$s._createFromRanges(e),i=!n.isEqual(this),o=function(t,e){switch(e.type){case"insert":return t.containsPosition(e.position);case"move":case"remove":case"reinsert":case"merge":return t.containsPosition(e.sourcePosition)||t.start.isEqual(e.sourcePosition)||t.containsPosition(e.targetPosition);case"split":return t.containsPosition(e.splitPosition)||t.containsPosition(e.insertionPosition)}return!1}(this,t);let r=null;if(i){"$graveyard"==n.root.rootName&&(r="remove"==t.type?t.sourcePosition:t.deletionPosition);const e=this.toRange();this.start=n.start,this.end=n.end,this.fire("change:range",e,{deletionPosition:r})}else o&&this.fire("change:content",this.toRange(),{deletionPosition:r})}.call(this,n)},{priority:"low"})}.call(this)}detach(){this.stopListening()}is(t){return"liveRange"==t||"model:liveRange"==t||super.is(t)}toRange(){return new $s(this.start,this.end)}static fromRange(t){return new oa(t.start,t.end)}}ci(oa,ei);const ra="selection:";class sa{constructor(t){this._selection=new aa(t),this._selection.delegate("change:range").to(this),this._selection.delegate("change:attribute").to(this)}get isCollapsed(){return this._selection.isCollapsed}get anchor(){return this._selection.anchor}get focus(){return this._selection.focus}get rangeCount(){return this._selection.rangeCount}get hasOwnRange(){return this._selection.hasOwnRange}get isBackward(){return this._selection.isBackward}get isGravityOverridden(){return this._selection.isGravityOverridden}get markers(){return this._selection.markers}get _ranges(){return this._selection._ranges}getRanges(){return this._selection.getRanges()}getFirstPosition(){return this._selection.getFirstPosition()}getLastPosition(){return this._selection.getLastPosition()}getFirstRange(){return this._selection.getFirstRange()}getLastRange(){return this._selection.getLastRange()}getSelectedBlocks(){return this._selection.getSelectedBlocks()}getSelectedElement(){return this._selection.getSelectedElement()}containsEntireContent(t){return this._selection.containsEntireContent(t)}destroy(){this._selection.destroy()}getAttributeKeys(){return this._selection.getAttributeKeys()}getAttributes(){return this._selection.getAttributes()}getAttribute(t){return this._selection.getAttribute(t)}hasAttribute(t){return this._selection.hasAttribute(t)}refresh(){this._selection._updateMarkers(),this._selection._updateAttributes(!1)}is(t){return"selection"==t||"model:selection"==t||"documentSelection"==t||"model:documentSelection"==t}_setFocus(t,e){this._selection.setFocus(t,e)}_setTo(t,e,n){this._selection.setTo(t,e,n)}_setAttribute(t,e){this._selection.setAttribute(t,e)}_removeAttribute(t){this._selection.removeAttribute(t)}_getStoredAttributes(){return this._selection._getStoredAttributes()}_overrideGravity(){return this._selection.overrideGravity()}_restoreGravity(t){this._selection.restoreGravity(t)}static _getStoreAttributeKey(t){return ra+t}static _isStoreAttributeKey(t){return t.startsWith(ra)}}ci(sa,ei);class aa extends Xs{constructor(t){super(),this.markers=new oo({idProperty:"name"}),this._model=t.model,this._document=t,this._attributePriority=new Map,this._fixGraveyardRangesData=[],this._hasChangedRange=!1,this._overriddenGravityRegister=new Set,this.listenTo(this._model,"applyOperation",(t,e)=>{const n=e[0];if(n.isDocumentOperation&&"marker"!=n.type&&"rename"!=n.type&&"noop"!=n.type){for(;this._fixGraveyardRangesData.length;){const{liveRange:t,sourcePosition:e}=this._fixGraveyardRangesData.shift();this._fixGraveyardSelection(t,e)}this._hasChangedRange&&(this._hasChangedRange=!1,this.fire("change:range",{directChange:!1}))}},{priority:"lowest"}),this.on("change:range",()=>{for(const t of this.getRanges())if(!this._document._validateSelectionRange(t))throw new Gn.b("document-selection-wrong-position: Range from document selection starts or ends at incorrect position.",this,{range:t})}),this.listenTo(this._model.markers,"update",()=>this._updateMarkers()),this.listenTo(this._document,"change",(t,e)=>{!function(t,e){const n=t.document.differ;for(const i of n.getChanges()){if("insert"!=i.type)continue;const n=i.position.parent,o=i.length===n.maxOffset;o&&t.enqueueChange(e,t=>{const e=Array.from(n.getAttributeKeys()).filter(t=>t.startsWith(ra));for(const i of e)t.removeAttribute(i,n)})}}(this._model,e)})}get isCollapsed(){return 0===this._ranges.length?this._document._getDefaultRange().isCollapsed:super.isCollapsed}get anchor(){return super.anchor||this._document._getDefaultRange().start}get focus(){return super.focus||this._document._getDefaultRange().end}get rangeCount(){return this._ranges.length?this._ranges.length:1}get hasOwnRange(){return this._ranges.length>0}get isGravityOverridden(){return!!this._overriddenGravityRegister.size}destroy(){for(let t=0;t{this._hasChangedRange=!0,e.root==this._document.graveyard&&this._fixGraveyardRangesData.push({liveRange:e,sourcePosition:i.deletionPosition})}),e}_updateMarkers(){const t=[];for(const e of this._model.markers){const n=e.getRange();for(const i of this.getRanges())n.containsRange(i,!i.isCollapsed)&&t.push(e)}for(const e of t)this.markers.has(e)||this.markers.add(e);for(const e of Array.from(this.markers))t.includes(e)||this.markers.remove(e)}_updateAttributes(t){const e=js(this._getSurroundingAttributes()),n=js(this.getAttributes());if(t)this._attributePriority=new Map,this._attrs=new Map;else for(const[t,e]of this._attributePriority)"low"==e&&(this._attrs.delete(t),this._attributePriority.delete(t));this._setAttributesTo(e);const i=[];for(const[t,e]of this.getAttributes())n.has(t)&&n.get(t)===e||i.push(t);for(const[t]of n)this.hasAttribute(t)||i.push(t);i.length>0&&this.fire("change:attribute",{attributeKeys:i,directChange:!1})}_setAttribute(t,e,n=!0){const i=n?"normal":"low";return("low"!=i||"normal"!=this._attributePriority.get(t))&&(super.getAttribute(t)!==e&&(this._attrs.set(t,e),this._attributePriority.set(t,i),!0))}_removeAttribute(t,e=!0){const n=e?"normal":"low";return("low"!=n||"normal"!=this._attributePriority.get(t))&&(this._attributePriority.set(t,n),!!super.hasAttribute(t)&&(this._attrs.delete(t),!0))}_setAttributesTo(t){const e=new Set;for(const[e,n]of this.getAttributes())t.get(e)!==n&&this._removeAttribute(e,!1);for(const[n,i]of t){this._setAttribute(n,i,!1)&&e.add(n)}return e}*_getStoredAttributes(){const t=this.getFirstPosition().parent;if(this.isCollapsed&&t.isEmpty)for(const e of t.getAttributeKeys())if(e.startsWith(ra)){yield[e.substr(ra.length),t.getAttribute(e)]}}_getSurroundingAttributes(){const t=this.getFirstPosition(),e=this._model.schema;let n=null;if(this.isCollapsed){const e=t.textNode?t.textNode:t.nodeBefore,i=t.textNode?t.textNode:t.nodeAfter;if(this.isGravityOverridden||(n=ca(e)),n||(n=ca(i)),!this.isGravityOverridden&&!n){let t=e;for(;t&&!n;)n=ca(t=t.previousSibling)}if(!n){let t=i;for(;t&&!n;)n=ca(t=t.nextSibling)}n||(n=this._getStoredAttributes())}else{const t=this.getFirstRange();for(const i of t){if(i.item.is("element")&&e.isObject(i.item))break;if("text"==i.type){n=i.item.getAttributes();break}}}return n}_fixGraveyardSelection(t,e){const n=e.clone(),i=this._model.schema.getNearestSelectionRange(n),o=this._ranges.indexOf(t);if(this._ranges.splice(o,1),t.detach(),i){const t=this._prepareRange(i);this._ranges.splice(o,0,t)}}}function ca(t){return t instanceof Bs||t instanceof zs?t.getAttributes():null}class la{constructor(t){this._dispatchers=t}add(t){for(const e of this._dispatchers)t(e);return this}}var da=1,ha=4;var ua=function(t){return Fn(t,da|ha)};class fa extends la{elementToElement(t){return this.add(function(t){return(t=ua(t)).view=ma(t.view,"container"),e=>{e.on("insert:"+t.model,function(t){return(e,n,i)=>{const o=t(n.item,i.writer);if(!o)return;if(!i.consumable.consume(n.item,"insert"))return;const r=i.mapper.toViewPosition(n.range.start);i.mapper.bindElements(n.item,o),i.writer.insert(r,o)}}(t.view),{priority:t.converterPriority||"normal"})}}(t))}attributeToElement(t){return this.add(function(t){let e="attribute:"+((t=ua(t)).model.key?t.model.key:t.model);t.model.name&&(e+=":"+t.model.name);if(t.model.values)for(const e of t.model.values)t.view[e]=ma(t.view[e],"attribute");else t.view=ma(t.view,"attribute");const n=pa(t);return i=>{i.on(e,function(t){return(e,n,i)=>{const o=t(n.attributeOldValue,i.writer),r=t(n.attributeNewValue,i.writer);if(!o&&!r)return;if(!i.consumable.consume(n.item,e.name))return;const s=i.writer,a=s.document.selection;if(n.item instanceof Xs||n.item instanceof sa)s.wrap(a.getFirstRange(),r);else{let t=i.mapper.toViewRange(n.range);null!==n.attributeOldValue&&o&&(t=s.unwrap(t,o)),null!==n.attributeNewValue&&r&&s.wrap(t,r)}}}(n),{priority:t.converterPriority||"normal"})}}(t))}attributeToAttribute(t){return this.add(function(t){let e="attribute:"+((t=ua(t)).model.key?t.model.key:t.model);t.model.name&&(e+=":"+t.model.name);if(t.model.values)for(const e of t.model.values)t.view[e]=ba(t.view[e]);else t.view=ba(t.view);const n=pa(t);return i=>{i.on(e,function(t){return(e,n,i)=>{const o=t(n.attributeOldValue,n),r=t(n.attributeNewValue,n);if(!o&&!r)return;if(!i.consumable.consume(n.item,e.name))return;const s=i.mapper.toViewElement(n.item),a=i.writer;if(!s)throw new Gn.b("conversion-attribute-to-attribute-on-text: Trying to convert text node's attribute with attribute-to-attribute converter.",[n,i]);if(null!==n.attributeOldValue&&o)if("class"==o.key){const t=Array.isArray(o.value)?o.value:[o.value];for(const e of t)a.removeClass(e,s)}else if("style"==o.key){const t=Object.keys(o.value);for(const e of t)a.removeStyle(e,s)}else a.removeAttribute(o.key,s);if(null!==n.attributeNewValue&&r)if("class"==r.key){const t=Array.isArray(r.value)?r.value:[r.value];for(const e of t)a.addClass(e,s)}else if("style"==r.key){const t=Object.keys(r.value);for(const e of t)a.setStyle(e,r.value[e],s)}else a.setAttribute(r.key,r.value,s)}}(n),{priority:t.converterPriority||"normal"})}}(t))}markerToElement(t){return this.add(function(t){return(t=ua(t)).view=ma(t.view,"ui"),e=>{e.on("addMarker:"+t.model,function(t){return(e,n,i)=>{n.isOpening=!0;const o=t(n,i.writer);n.isOpening=!1;const r=t(n,i.writer);if(!o||!r)return;const s=n.markerRange;if(s.isCollapsed&&!i.consumable.consume(s,e.name))return;for(const t of s)if(!i.consumable.consume(t.item,e.name))return;const a=i.mapper,c=i.writer;c.insert(a.toViewPosition(s.start),o),i.mapper.bindElementToMarker(o,n.markerName),s.isCollapsed||(c.insert(a.toViewPosition(s.end),r),i.mapper.bindElementToMarker(r,n.markerName)),e.stop()}}(t.view),{priority:t.converterPriority||"normal"}),e.on("removeMarker:"+t.model,(t.view,(t,e,n)=>{const i=n.mapper.markerNameToElements(e.markerName);if(i){for(const t of i)n.mapper.unbindElementFromMarkerName(t,e.markerName),n.writer.clear(n.writer.createRangeOn(t),t);n.writer.clearClonedElementsGroup(e.markerName),t.stop()}}),{priority:t.converterPriority||"normal"})}}(t))}markerToHighlight(t){return this.add(function(t){return e=>{e.on("addMarker:"+t.model,function(t){return(e,n,i)=>{if(!n.item)return;if(!(n.item instanceof Xs||n.item instanceof sa||n.item.is("textProxy")))return;const o=wa(t,n,i);if(!o)return;if(!i.consumable.consume(n.item,e.name))return;const r=ga(o),s=i.writer,a=s.document.selection;if(n.item instanceof Xs||n.item instanceof sa)s.wrap(a.getFirstRange(),r,a);else{const t=i.mapper.toViewRange(n.range),e=s.wrap(t,r);for(const t of e.getItems())if(t.is("attributeElement")&&t.isSimilar(r)){i.mapper.bindElementToMarker(t,n.markerName);break}}}}(t.view),{priority:t.converterPriority||"normal"}),e.on("addMarker:"+t.model,function(t){return(e,n,i)=>{if(!n.item)return;if(!(n.item instanceof Us))return;const o=wa(t,n,i);if(!o)return;if(!i.consumable.test(n.item,e.name))return;const r=i.mapper.toViewElement(n.item);if(r&&r.getCustomProperty("addHighlight")){i.consumable.consume(n.item,e.name);for(const t of $s._createIn(n.item))i.consumable.consume(t.item,e.name);r.getCustomProperty("addHighlight")(r,o,i.writer),i.mapper.bindElementToMarker(r,n.markerName)}}}(t.view),{priority:t.converterPriority||"normal"}),e.on("removeMarker:"+t.model,function(t){return(e,n,i)=>{if(n.markerRange.isCollapsed)return;const o=wa(t,n,i);if(!o)return;const r=ga(o),s=i.mapper.markerNameToElements(n.markerName);if(s){for(const t of s)i.mapper.unbindElementFromMarkerName(t,n.markerName),t.is("attributeElement")?i.writer.unwrap(i.writer.createRangeOn(t),r):t.getCustomProperty("removeHighlight")(t,o.id,i.writer);i.writer.clearClonedElementsGroup(n.markerName),e.stop()}}}(t.view),{priority:t.converterPriority||"normal"})}}(t))}}function ga(t){const e=new ao("span",t.attributes);return t.classes&&e._addClass(t.classes),t.priority&&(e._priority=t.priority),e._id=t.id,e}function ma(t,e){return"function"==typeof t?t:(n,i)=>(function(t,e,n){"string"==typeof t&&(t={name:t});let i;const o=Object.assign({},t.attributes);if("container"==n)i=e.createContainerElement(t.name,o);else if("attribute"==n){const n={priority:t.priority||ao.DEFAULT_PRIORITY};i=e.createAttributeElement(t.name,o,n)}else i=e.createUIElement(t.name,o);if(t.styles){const n=Object.keys(t.styles);for(const o of n)e.setStyle(o,t.styles[o],i)}if(t.classes){const n=t.classes;if("string"==typeof n)e.addClass(n,i);else for(const t of n)e.addClass(t,i)}return i})(t,i,e)}function pa(t){return t.model.values?(e,n)=>{const i=t.view[e];return i?i(e,n):null}:t.view}function ba(t){return"string"==typeof t?e=>({key:t,value:e}):"object"==typeof t?t.value?()=>t:e=>({key:t.key,value:e}):t}function wa(t,e,n){const i="function"==typeof t?t(e,n):t;return i?(i.priority||(i.priority=10),i.id||(i.id=e.markerName),i):null}class ka extends la{elementToElement(t){return this.add(_a(t))}elementToAttribute(t){return this.add(function(t){ya(t=ua(t));const e=xa(t,!1),n=va(t.view),i=n?"element:"+n:"element";return n=>{n.on(i,e,{priority:t.converterPriority||"low"})}}(t))}attributeToAttribute(t){return this.add(function(t){let e=null;("string"==typeof(t=ua(t)).view||t.view.key)&&(e=function(t){"string"==typeof t.view&&(t.view={key:t.view});const e=t.view.key;let n;if("class"==e||"style"==e){const i="class"==e?"classes":"styles";n={[i]:t.view.value}}else{const i=void 0===t.view.value?/[\s\S]*/:t.view.value;n={attributes:{[e]:i}}}t.view.name&&(n.name=t.view.name);return t.view=n,e}(t));ya(t,e);const n=xa(t,!0);return e=>{e.on("element",n,{priority:t.converterPriority||"low"})}}(t))}elementToMarker(t){return this.add(function(t){return function(t){const e=t.model;t.model=((t,n)=>{const i="string"==typeof e?e:e(t);return n.createElement("$marker",{"data-name":i})})}(t=ua(t)),_a(t)}(t))}}function _a(t){const e=function(t){const e=t.view?new bi(t.view):null;return(n,i,o)=>{let r={};if(e){const t=e.match(i.viewItem);if(!t)return;r=t.match}r.name=!0;const s=function(t,e,n){return t instanceof Function?t(e,n):n.createElement(t)}(t.model,i.viewItem,o.writer);if(!s)return;if(!o.consumable.test(i.viewItem,r))return;const a=o.splitToAllowedParent(s,i.modelCursor);if(!a)return;o.writer.insert(s,a.position),o.convertChildren(i.viewItem,o.writer.createPositionAt(s,0)),o.consumable.consume(i.viewItem,r);const c=o.getSplitParts(s);i.modelRange=new $s(o.writer.createPositionBefore(s),o.writer.createPositionAfter(c[c.length-1])),a.cursorParent?i.modelCursor=o.writer.createPositionAt(a.cursorParent,0):i.modelCursor=i.modelRange.end}}(t=ua(t)),n=va(t.view),i=n?"element:"+n:"element";return n=>{n.on(i,e,{priority:t.converterPriority||"normal"})}}function va(t){return"string"==typeof t?t:"object"==typeof t&&"string"==typeof t.name?t.name:null}function ya(t,e=null){const n=null===e||(t=>t.getAttribute(e)),i="object"!=typeof t.model?t.model:t.model.key,o="object"!=typeof t.model||void 0===t.model.value?n:t.model.value;t.model={key:i,value:o}}function xa(t,e){const n=new bi(t.view);return(i,o,r)=>{const s=n.match(o.viewItem);if(!s)return;const a=t.model.key,c="function"==typeof t.model.value?t.model.value(o.viewItem):t.model.value;null!==c&&(!function(t,e){const n="function"==typeof t?t(e):t;if("object"==typeof n&&!va(n))return!1;return!n.classes&&!n.attributes&&!n.styles}(t.view,o.viewItem)?delete s.match.name:s.match.name=!0,r.consumable.test(o.viewItem,s.match)&&(o.modelRange||(o=Object.assign(o,r.convertChildren(o.viewItem,o.modelCursor))),function(t,e,n,i){let o=!1;for(const r of Array.from(t.getItems({shallow:n})))i.schema.checkAttribute(r,e.key)&&(i.writer.setAttribute(e.key,e.value,r),o=!0);return o}(o.modelRange,{key:a,value:c},e,r)&&r.consumable.consume(o.viewItem,s.match)))}}class Aa{constructor(t){this.model=t,this.view=new Ls,this.mapper=new Gs,this.downcastDispatcher=new Js({mapper:this.mapper});const e=this.model.document,n=e.selection,i=this.model.markers;this.listenTo(this.model,"_beforeChanges",()=>{this.view._disableRendering(!0)},{priority:"highest"}),this.listenTo(this.model,"_afterChanges",()=>{this.view._disableRendering(!1)},{priority:"lowest"}),this.listenTo(e,"change",()=>{this.view.change(t=>{this.downcastDispatcher.convertChanges(e.differ,i,t),this.downcastDispatcher.convertSelection(n,i,t)})},{priority:"low"}),this.listenTo(this.view.document,"selectionChange",function(t,e){return(n,i)=>{const o=i.newSelection,r=new Xs,s=[];for(const t of o.getRanges())s.push(e.toModelRange(t));r.setTo(s,{backward:o.isBackward}),r.isEqual(t.document.selection)||t.change(t=>{t.setSelection(r)})}}(this.model,this.mapper)),this.downcastDispatcher.on("insert:$text",(t,e,n)=>{if(!n.consumable.consume(e.item,"insert"))return;const i=n.writer,o=n.mapper.toViewPosition(e.range.start),r=i.createText(e.item.data);i.insert(o,r)},{priority:"lowest"}),this.downcastDispatcher.on("remove",(t,e,n)=>{const i=n.mapper.toViewPosition(e.position),o=e.position.getShiftedBy(e.length),r=n.mapper.toViewPosition(o,{isPhantom:!0}),s=n.writer.createRange(i,r),a=n.writer.remove(s.getTrimmed());for(const t of n.writer.createRangeIn(a).getItems())n.mapper.unbindViewElement(t)},{priority:"low"}),this.downcastDispatcher.on("selection",(t,e,n)=>{const i=n.writer,o=i.document.selection;for(const t of o.getRanges())t.isCollapsed&&t.end.parent.document&&n.writer.mergeAttributes(t.start);i.setSelection(null)},{priority:"low"}),this.downcastDispatcher.on("selection",(t,e,n)=>{const i=e.selection;if(i.isCollapsed)return;if(!n.consumable.consume(i,"selection"))return;const o=[];for(const t of i.getRanges()){const e=n.mapper.toViewRange(t);o.push(e)}n.writer.setSelection(o,{backward:i.isBackward})},{priority:"low"}),this.downcastDispatcher.on("selection",(t,e,n)=>{const i=e.selection;if(!i.isCollapsed)return;if(!n.consumable.consume(i,"selection"))return;const o=n.writer,r=i.getFirstPosition(),s=n.mapper.toViewPosition(r),a=o.breakAttributes(s);o.setSelection(a)},{priority:"low"}),this.view.document.roots.bindTo(this.model.document.roots).using(t=>{if("$graveyard"==t.rootName)return null;const e=new Ki(t.name);return e.rootName=t.rootName,e._document=this.view.document,this.mapper.bindElements(t,e),e})}destroy(){this.view.destroy(),this.stopListening()}}ci(Aa,Fi);class Ta{constructor(t,e=[]){this._editor=t,this._availablePlugins=new Map,this._plugins=new Map;for(const t of e)this._availablePlugins.set(t,t),t.pluginName&&this._availablePlugins.set(t.pluginName,t)}*[Symbol.iterator](){for(const t of this._plugins)"function"==typeof t[0]&&(yield t)}get(t){const e=this._plugins.get(t);if(!e){const e="plugincollection-plugin-not-loaded: The requested plugin is not loaded.";let n=t;throw"function"==typeof t&&(n=t.pluginName||t.name),new Gn.b(e,this._editor,{plugin:n})}return e}has(t){return this._plugins.has(t)}init(t,e=[]){const n=this,i=this._editor,o=new Set,r=[],s=u(t),a=u(e),c=function(t){const e=[];for(const n of t)h(n)||e.push(n);return e.length?e:null}(t);if(c){const t="plugincollection-plugin-not-found: Some plugins are not available and could not be loaded.";return console.error(Object(Gn.a)(t),{plugins:c}),Promise.reject(new Gn.b(t,this._editor,{plugins:c}))}return Promise.all(s.map(l)).then(()=>d(r,"init")).then(()=>d(r,"afterInit")).then(()=>r);function l(t){if(!a.includes(t)&&!n._plugins.has(t)&&!o.has(t))return function(t){return new Promise(s=>{o.add(t),t.requires&&t.requires.forEach(n=>{const o=h(n);if(e.includes(o))throw new Gn.b("plugincollection-required: Cannot load a plugin because one of its dependencies is listed inthe `removePlugins` option.",i,{plugin:o,requiredBy:t});l(o)});const a=new t(i);n._add(t,a),r.push(a),s()})}(t).catch(e=>{throw console.error(Object(Gn.a)("plugincollection-load: It was not possible to load the plugin."),{plugin:t}),e})}function d(t,e){return t.reduce((t,n)=>n[e]?t.then(n[e].bind(n)):t,Promise.resolve())}function h(t){return"function"==typeof t?t:n._availablePlugins.get(t)}function u(t){return t.map(t=>h(t)).filter(t=>!!t)}}destroy(){const t=Array.from(this).map(([,t])=>t).filter(t=>"function"==typeof t.destroy).map(t=>t.destroy());return Promise.all(t)}_add(t,e){this._plugins.set(t,e);const n=t.pluginName;if(n){if(this._plugins.has(n))throw new Gn.b("plugincollection-plugin-name-conflict: Two plugins with the same name were loaded.",null,{pluginName:n,plugin1:this._plugins.get(n).constructor,plugin2:t});this._plugins.set(n,e)}}}ci(Ta,ei);class Ca{constructor(){this._commands=new Map}add(t,e){this._commands.set(t,e)}get(t){return this._commands.get(t)}execute(t,...e){const n=this.get(t);if(!n)throw new Gn.b("commandcollection-command-not-found: Command does not exist.",this,{commandName:t});n.execute(...e)}*names(){yield*this._commands.keys()}*commands(){yield*this._commands.values()}[Symbol.iterator](){return this._commands[Symbol.iterator]()}destroy(){for(const t of this.commands())t.destroy()}}function Pa(t,e){const n=Object.keys(window.CKEDITOR_TRANSLATIONS).length;return 1===n&&(t=Object.keys(window.CKEDITOR_TRANSLATIONS)[0]),0!==n&&function(t,e){return t in window.CKEDITOR_TRANSLATIONS&&e in window.CKEDITOR_TRANSLATIONS[t]}(t,e)?window.CKEDITOR_TRANSLATIONS[t][e].replace(/ \[context: [^\]]+\]$/,""):e.replace(/ \[context: [^\]]+\]$/,"")}window.CKEDITOR_TRANSLATIONS||(window.CKEDITOR_TRANSLATIONS={});const Sa=["ar","fa","he","ku","ug"];class Ma{constructor(t={}){this.uiLanguage=t.uiLanguage||"en",this.contentLanguage=t.contentLanguage||this.uiLanguage,this.uiLanguageDirection=Ea(this.uiLanguage),this.contentLanguageDirection=Ea(this.contentLanguage),this.t=((...t)=>this._t(...t))}get language(){return console.warn("locale-deprecated-language-property: The Locale#language property has been deprecated and will be removed in the near future. Please use #uiLanguage and #contentLanguage properties instead."),this.uiLanguage}_t(t,e){let n=Pa(this.uiLanguage,t);return e&&(n=n.replace(/%(\d+)/g,(t,n)=>n{e[0]=new Ra(e[0])},{priority:"highest"}),this.on("checkChild",(t,e)=>{e[0]=new Ra(e[0]),e[1]=this.getDefinition(e[1])},{priority:"highest"})}register(t,e){if(this._sourceDefinitions[t])throw new Gn.b("schema-cannot-register-item-twice: A single item cannot be registered twice in the schema.",this,{itemName:t});this._sourceDefinitions[t]=[Object.assign({},e)],this._clearCache()}extend(t,e){if(!this._sourceDefinitions[t])throw new Gn.b("schema-cannot-extend-missing-item: Cannot extend an item which was not registered yet.",this,{itemName:t});this._sourceDefinitions[t].push(Object.assign({},e)),this._clearCache()}getDefinitions(){return this._compiledDefinitions||this._compile(),this._compiledDefinitions}getDefinition(t){let e;return e="string"==typeof t?t:t.is&&(t.is("text")||t.is("textProxy"))?"$text":t.name,this.getDefinitions()[e]}isRegistered(t){return!!this.getDefinition(t)}isBlock(t){const e=this.getDefinition(t);return!(!e||!e.isBlock)}isLimit(t){const e=this.getDefinition(t);return!!e&&!(!e.isLimit&&!e.isObject)}isObject(t){const e=this.getDefinition(t);return!(!e||!e.isObject)}isInline(t){const e=this.getDefinition(t);return!(!e||!e.isInline)}checkChild(t,e){return!!e&&this._checkContextMatch(e,t)}checkAttribute(t,e){const n=this.getDefinition(t.last);return!!n&&n.allowAttributes.includes(e)}checkMerge(t,e=null){if(t instanceof Ys){const e=t.nodeBefore,n=t.nodeAfter;if(!(e instanceof Us))throw new Gn.b("schema-check-merge-no-element-before: The node before the merge position must be an element.",this);if(!(n instanceof Us))throw new Gn.b("schema-check-merge-no-element-after: The node after the merge position must be an element.",this);return this.checkMerge(e,n)}for(const n of e.getChildren())if(!this.checkChild(t,n))return!1;return!0}addChildCheck(t){this.on("checkChild",(e,[n,i])=>{if(!i)return;const o=t(n,i);"boolean"==typeof o&&(e.stop(),e.return=o)},{priority:"high"})}addAttributeCheck(t){this.on("checkAttribute",(e,[n,i])=>{const o=t(n,i);"boolean"==typeof o&&(e.stop(),e.return=o)},{priority:"high"})}setAttributeProperties(t,e){this._attributeProperties[t]=Object.assign(this.getAttributeProperties(t),e)}getAttributeProperties(t){return this._attributeProperties[t]||{}}getLimitElement(t){let e;if(t instanceof Ys)e=t.parent;else{e=(t instanceof $s?[t]:Array.from(t.getRanges())).reduce((t,e)=>{const n=e.getCommonAncestor();return t?t.getCommonAncestor(n,{includeSelf:!0}):n},null)}for(;!this.isLimit(e)&&e.parent;)e=e.parent;return e}checkAttributeInSelection(t,e){if(t.isCollapsed){const n=[...t.getFirstPosition().getAncestors(),new zs("",t.getAttributes())];return this.checkAttribute(n,e)}{const n=t.getRanges();for(const t of n)for(const n of t)if(this.checkAttribute(n.item,e))return!0}return!1}*getValidRanges(t,e){t=function*(t){for(const e of t)yield*e.getMinimalFlatRanges()}(t);for(const n of t)yield*this._getValidRangesForRange(n,e)}getNearestSelectionRange(t,e="both"){if(this.checkChild(t,"$text"))return new $s(t);let n,i;"both"!=e&&"backward"!=e||(n=new Hs({startPosition:t,direction:"backward"})),"both"!=e&&"forward"!=e||(i=new Hs({startPosition:t}));for(const t of function*(t,e){let n=!1;for(;!n;){if(n=!0,t){const e=t.next();e.done||(n=!1,yield{walker:t,value:e.value})}if(e){const t=e.next();t.done||(n=!1,yield{walker:e,value:t.value})}}}(n,i)){const e=t.walker==n?"elementEnd":"elementStart",i=t.value;if(i.type==e&&this.isObject(i.item))return $s._createOn(i.item);if(this.checkChild(i.nextPosition,"$text"))return new $s(i.nextPosition)}return null}findAllowedParent(t,e){let n=t.parent;for(;n;){if(this.checkChild(n,e))return n;if(this.isLimit(n))return null;n=n.parent}return null}removeDisallowedAttributes(t,e){for(const n of t)if(n.is("text"))Wa(this,n,e);else{const t=$s._createIn(n).getPositions();for(const n of t){Wa(this,n.nodeBefore||n.parent,e)}}}createContext(t){return new Ra(t)}_clearCache(){this._compiledDefinitions=null}_compile(){const t={},e=this._sourceDefinitions,n=Object.keys(e);for(const i of n)t[i]=Da(e[i],i);for(const e of n)La(t,e);for(const e of n)ja(t,e);for(const e of n)Va(t,e),za(t,e);for(const e of n)Ba(t,e),Fa(t,e);this._compiledDefinitions=t}_checkContextMatch(t,e,n=e.length-1){const i=e.getItem(n);if(t.allowIn.includes(i.name)){if(0==n)return!0;{const t=this.getDefinition(i);return this._checkContextMatch(t,e,n-1)}}return!1}*_getValidRangesForRange(t,e){let n=t.start,i=t.start;for(const o of t.getItems({shallow:!0}))o.is("element")&&(yield*this._getValidRangesForRange($s._createIn(o),e)),this.checkAttribute(o,e)||(n.isEqual(i)||(yield new $s(n,i)),n=Ys._createAfter(o)),i=Ys._createAfter(o);n.isEqual(i)||(yield new $s(n,i))}}ci(Oa,Fi);class Ra{constructor(t){if(t instanceof Ra)return t;"string"==typeof t?t=[t]:Array.isArray(t)||(t=t.getAncestors({includeSelf:!0})),t[0]&&"string"!=typeof t[0]&&t[0].is("documentFragment")&&t.shift(),this._items=t.map(qa)}get length(){return this._items.length}get last(){return this._items[this._items.length-1]}[Symbol.iterator](){return this._items[Symbol.iterator]()}push(t){const e=new Ra([t]);return e._items=[...this._items,...e._items],e}getItem(t){return this._items[t]}*getNames(){yield*this._items.map(t=>t.name)}endsWith(t){return Array.from(this.getNames()).join(" ").endsWith(t)}}function Da(t,e){const n={name:e,allowIn:[],allowContentOf:[],allowWhere:[],allowAttributes:[],allowAttributesOf:[],inheritTypesFrom:[]};return function(t,e){for(const n of t){const t=Object.keys(n).filter(t=>t.startsWith("is"));for(const i of t)e[i]=n[i]}}(t,n),Ua(t,n,"allowIn"),Ua(t,n,"allowContentOf"),Ua(t,n,"allowWhere"),Ua(t,n,"allowAttributes"),Ua(t,n,"allowAttributesOf"),Ua(t,n,"inheritTypesFrom"),function(t,e){for(const n of t){const t=n.inheritAllFrom;t&&(e.allowContentOf.push(t),e.allowWhere.push(t),e.allowAttributesOf.push(t),e.inheritTypesFrom.push(t))}}(t,n),n}function La(t,e){for(const n of t[e].allowContentOf)if(t[n]){Ha(t,n).forEach(t=>{t.allowIn.push(e)})}delete t[e].allowContentOf}function ja(t,e){for(const n of t[e].allowWhere){const i=t[n];if(i){const n=i.allowIn;t[e].allowIn.push(...n)}}delete t[e].allowWhere}function Va(t,e){for(const n of t[e].allowAttributesOf){const i=t[n];if(i){const n=i.allowAttributes;t[e].allowAttributes.push(...n)}}delete t[e].allowAttributesOf}function za(t,e){const n=t[e];for(const e of n.inheritTypesFrom){const i=t[e];if(i){const t=Object.keys(i).filter(t=>t.startsWith("is"));for(const e of t)e in n||(n[e]=i[e])}}delete n.inheritTypesFrom}function Ba(t,e){const n=t[e],i=n.allowIn.filter(e=>t[e]);n.allowIn=Array.from(new Set(i))}function Fa(t,e){const n=t[e];n.allowAttributes=Array.from(new Set(n.allowAttributes))}function Ua(t,e,n){for(const i of t)"string"==typeof i[n]?e[n].push(i[n]):Array.isArray(i[n])&&e[n].push(...i[n])}function Ha(t,e){const n=t[e];return function(t){return Object.keys(t).map(e=>t[e])}(t).filter(t=>t.allowIn.includes(n.name))}function qa(t){return"string"==typeof t?{name:t,*getAttributeKeys(){},getAttribute(){}}:{name:t.is("element")?t.name:"$text",*getAttributeKeys(){yield*t.getAttributeKeys()},getAttribute:e=>t.getAttribute(e)}}function Wa(t,e,n){for(const i of e.getAttributeKeys())t.checkAttribute(e,i)||n.removeAttribute(i,e)}class Ya{constructor(t={}){this._splitParts=new Map,this._modelCursor=null,this.conversionApi=Object.assign({},t),this.conversionApi.convertItem=this._convertItem.bind(this),this.conversionApi.convertChildren=this._convertChildren.bind(this),this.conversionApi.splitToAllowedParent=this._splitToAllowedParent.bind(this),this.conversionApi.getSplitParts=this._getSplitParts.bind(this)}convert(t,e,n=["$root"]){this.fire("viewCleanup",t),this._modelCursor=function(t,e){let n;for(const i of new Ra(t)){const t={};for(const e of i.getAttributeKeys())t[e]=i.getAttribute(e);const o=e.createElement(i.name,t);n&&e.append(o,n),n=Ys._createAt(o,0)}return n}(n,e),this.conversionApi.writer=e,this.conversionApi.consumable=Ia.createFrom(t),this.conversionApi.store={};const{modelRange:i}=this._convertItem(t,this._modelCursor),o=e.createDocumentFragment();if(i){this._removeEmptyElements();for(const t of Array.from(this._modelCursor.parent.getChildren()))e.append(t,o);o.markers=function(t,e){const n=new Set,i=new Map,o=$s._createIn(t).getItems();for(const t of o)"$marker"==t.name&&n.add(t);for(const t of n){const n=t.getAttribute("data-name"),o=e.createPositionBefore(t);i.has(n)?i.get(n).end=o.clone():i.set(n,new $s(o.clone())),e.remove(t)}return i}(o,e)}return this._modelCursor=null,this._splitParts.clear(),this.conversionApi.writer=null,this.conversionApi.store=null,o}_convertItem(t,e){const n=Object.assign({viewItem:t,modelCursor:e,modelRange:null});if(t.is("element")?this.fire("element:"+t.name,n,this.conversionApi):t.is("text")?this.fire("text",n,this.conversionApi):this.fire("documentFragment",n,this.conversionApi),n.modelRange&&!(n.modelRange instanceof $s))throw new Gn.b("view-conversion-dispatcher-incorrect-result: Incorrect conversion result was dropped.",this);return{modelRange:n.modelRange,modelCursor:n.modelCursor}}_convertChildren(t,e){const n=new $s(e);let i=e;for(const e of Array.from(t.getChildren())){const t=this._convertItem(e,i);t.modelRange instanceof $s&&(n.end=t.modelRange.end,i=t.modelCursor)}return{modelRange:n,modelCursor:i}}_splitToAllowedParent(t,e){const n=this.conversionApi.schema.findAllowedParent(e,t);if(!n)return null;if(n===e.parent)return{position:e};if(this._modelCursor.parent.getAncestors().includes(n))return null;const i=this.conversionApi.writer.split(e,n),o=[];for(const t of i.range.getWalker())if("elementEnd"==t.type)o.push(t.item);else{const e=o.pop(),n=t.item;this._registerSplitPair(e,n)}return{position:i.position,cursorParent:i.range.end.parent}}_registerSplitPair(t,e){this._splitParts.has(t)||this._splitParts.set(t,[t]);const n=this._splitParts.get(t);this._splitParts.set(e,n),n.push(e)}_getSplitParts(t){let e;return e=this._splitParts.has(t)?this._splitParts.get(t):[t]}_removeEmptyElements(){let t=!1;for(const e of this._splitParts.keys())e.isEmpty&&(this.conversionApi.writer.remove(e),this._splitParts.delete(e),t=!0);t&&this._removeEmptyElements()}}ci(Ya,ei);class $a{constructor(t,e){this.model=t,this.processor=e,this.mapper=new Gs,this.downcastDispatcher=new Js({mapper:this.mapper}),this.downcastDispatcher.on("insert:$text",(t,e,n)=>{if(!n.consumable.consume(e.item,"insert"))return;const i=n.writer,o=n.mapper.toViewPosition(e.range.start),r=i.createText(e.item.data);i.insert(o,r)},{priority:"lowest"}),this.upcastDispatcher=new Ya({schema:t.schema}),this.upcastDispatcher.on("text",(t,e,n)=>{if(n.schema.checkChild(e.modelCursor,"$text")&&n.consumable.consume(e.viewItem)){const t=n.writer.createText(e.viewItem.data);n.writer.insert(t,e.modelCursor),e.modelRange=$s._createFromPositionAndShift(e.modelCursor,t.offsetSize),e.modelCursor=e.modelRange.end}},{priority:"lowest"}),this.upcastDispatcher.on("element",(t,e,n)=>{if(!e.modelRange&&n.consumable.consume(e.viewItem,{name:!0})){const{modelRange:t,modelCursor:i}=n.convertChildren(e.viewItem,e.modelCursor);e.modelRange=t,e.modelCursor=i}},{priority:"lowest"}),this.upcastDispatcher.on("documentFragment",(t,e,n)=>{if(!e.modelRange&&n.consumable.consume(e.viewItem,{name:!0})){const{modelRange:t,modelCursor:i}=n.convertChildren(e.viewItem,e.modelCursor);e.modelRange=t,e.modelCursor=i}},{priority:"lowest"}),this.decorate("init"),this.on("init",()=>{this.fire("ready")},{priority:"lowest"})}get(t){const{rootName:e="main",trim:n="empty"}=t||{};if(!this._checkIfRootsExists([e]))throw new Gn.b("datacontroller-get-non-existent-root: Attempting to get data from a non-existing root.",this);const i=this.model.document.getRoot(e);return"empty"!==n||this.model.hasContent(i,{ignoreWhitespaces:!0})?this.stringify(i):""}stringify(t){const e=this.toView(t);return this.processor.toData(e)}toView(t){this.mapper.clearBindings();const e=$s._createIn(t),n=new Ao,i=new To(new ro);if(this.mapper.bindElements(t,n),this.downcastDispatcher.convertInsert(e,i),!t.is("documentFragment")){const e=function(t){const e=[],n=t.root.document;if(!n)return[];const i=$s._createIn(t);for(const t of n.model.markers){const n=i.getIntersection(t.getRange());n&&e.push([t.name,n])}return e}(t);for(const[t,n]of e)this.downcastDispatcher.convertMarkerAdd(t,n,i)}return n}init(t){if(this.model.document.version)throw new Gn.b("datacontroller-init-document-not-empty: Trying to set initial data to not empty document.",this);let e={};if("string"==typeof t?e.main=t:e=t,!this._checkIfRootsExists(Object.keys(e)))throw new Gn.b("datacontroller-init-non-existent-root: Attempting to init data on a non-existing root.",this);return this.model.enqueueChange("transparent",t=>{for(const n of Object.keys(e)){const i=this.model.document.getRoot(n);t.insert(this.parse(e[n],i),i,0)}}),Promise.resolve()}set(t){let e={};if("string"==typeof t?e.main=t:e=t,!this._checkIfRootsExists(Object.keys(e)))throw new Gn.b("datacontroller-set-non-existent-root: Attempting to set data on a non-existing root.",this);this.model.enqueueChange("transparent",t=>{t.setSelection(null),t.removeSelectionAttribute(this.model.document.selection.getAttributeKeys());for(const n of Object.keys(e)){const i=this.model.document.getRoot(n);t.remove(t.createRangeIn(i)),t.insert(this.parse(e[n],i),i,0)}})}parse(t,e="$root"){const n=this.processor.toView(t);return this.toModel(n,e)}toModel(t,e="$root"){return this.model.change(n=>this.upcastDispatcher.convert(t,n,e))}destroy(){this.stopListening()}_checkIfRootsExists(t){for(const e of t)if(!this.model.document.getRootNames().includes(e))return!1;return!0}}ci($a,Fi);class Ga{constructor(t,e){this._helpers=new Map,this._downcast=Array.isArray(t)?t:[t],this._createConversionHelpers({name:"downcast",dispatchers:this._downcast,isDowncast:!0}),this._upcast=Array.isArray(e)?e:[e],this._createConversionHelpers({name:"upcast",dispatchers:this._upcast,isDowncast:!1})}addAlias(t,e){const n=this._downcast.includes(e);if(!this._upcast.includes(e)&&!n)throw new Gn.b("conversion-add-alias-dispatcher-not-registered: Trying to register and alias for a dispatcher that nas not been registered.",this);this._createConversionHelpers({name:t,dispatchers:[e],isDowncast:n})}for(t){if(!this._helpers.has(t))throw new Gn.b("conversion-for-unknown-group: Trying to add a converter to an unknown dispatchers group.",this);return this._helpers.get(t)}elementToElement(t){this.for("downcast").elementToElement(t);for(const{model:e,view:n}of Qa(t))this.for("upcast").elementToElement({model:e,view:n,converterPriority:t.converterPriority})}attributeToElement(t){this.for("downcast").attributeToElement(t);for(const{model:e,view:n}of Qa(t))this.for("upcast").elementToAttribute({view:n,model:e,converterPriority:t.converterPriority})}attributeToAttribute(t){this.for("downcast").attributeToAttribute(t);for(const{model:e,view:n}of Qa(t))this.for("upcast").attributeToAttribute({view:n,model:e})}_createConversionHelpers({name:t,dispatchers:e,isDowncast:n}){if(this._helpers.has(t))throw new Gn.b("conversion-group-exists: Trying to register a group name that has already been registered.",this);const i=n?new fa(e):new ka(e);this._helpers.set(t,i)}}function*Qa(t){if(t.model.values)for(const e of t.model.values){yield*Ka({key:t.model.key,value:e},t.view[e],t.upcastAlso?t.upcastAlso[e]:void 0)}else yield*Ka(t.model,t.view,t.upcastAlso)}function*Ka(t,e,n){if(yield{model:t,view:e},n){n=Array.isArray(n)?n:[n];for(const e of n)yield{model:t,view:e}}}class Ja{constructor(t="default"){this.operations=[],this.type=t}get baseVersion(){for(const t of this.operations)if(null!==t.baseVersion)return t.baseVersion;return null}addOperation(t){return t.batch=this,this.operations.push(t),t}}class Za{constructor(t){this.baseVersion=t,this.isDocumentOperation=null!==this.baseVersion,this.batch=null}_validate(){}toJSON(){const t=Object.assign({},this);return t.__className=this.constructor.className,delete t.batch,delete t.isDocumentOperation,t}static get className(){return"Operation"}static fromJSON(t){return new this(t.baseVersion)}}class Xa{constructor(t){this.markers=new Map,this._children=new Fs,t&&this._insertChild(0,t)}[Symbol.iterator](){return this.getChildren()}get childCount(){return this._children.length}get maxOffset(){return this._children.maxOffset}get isEmpty(){return 0===this.childCount}get root(){return this}get parent(){return null}is(t){return"documentFragment"==t||"model:documentFragment"==t}getChild(t){return this._children.getNode(t)}getChildren(){return this._children[Symbol.iterator]()}getChildIndex(t){return this._children.getNodeIndex(t)}getChildStartOffset(t){return this._children.getNodeStartOffset(t)}getPath(){return[]}getNodeByPath(t){let e=this;for(const n of t)e=e.getChild(e.offsetToIndex(n));return e}offsetToIndex(t){return this._children.offsetToIndex(t)}toJSON(){const t=[];for(const e of this._children)t.push(e.toJSON());return t}static fromJSON(t){const e=[];for(const n of t)n.name?e.push(Us.fromJSON(n)):e.push(zs.fromJSON(n));return new Xa(e)}_appendChild(t){this._insertChild(this.childCount,t)}_insertChild(t,e){const n=function(t){if("string"==typeof t)return[new zs(t)];pi(t)||(t=[t]);return Array.from(t).map(t=>"string"==typeof t?new zs(t):t instanceof Bs?new zs(t.data,t.getAttributes()):t)}(e);for(const t of n)null!==t.parent&&t._remove(),t.parent=this;this._children._insertNodes(t,n)}_removeChildren(t,e=1){const n=this._children._removeNodes(t,e);for(const t of n)t.parent=null;return n}}function tc(t,e){const n=(e=ic(e)).reduce((t,e)=>t+e.offsetSize,0),i=t.parent;rc(t);const o=t.index;return i._insertChild(o,e),oc(i,o+e.length),oc(i,o),new $s(t,t.getShiftedBy(n))}function ec(t){if(!t.isFlat)throw new Gn.b("operation-utils-remove-range-not-flat: Trying to remove a range which starts and ends in different element.",this);const e=t.start.parent;rc(t.start),rc(t.end);const n=e._removeChildren(t.start.index,t.end.index-t.start.index);return oc(e,t.start.index),n}function nc(t,e){if(!t.isFlat)throw new Gn.b("operation-utils-move-range-not-flat: Trying to move a range which starts and ends in different element.",this);const n=ec(t);return tc(e=e._getTransformedByDeletion(t.start,t.end.offset-t.start.offset),n)}function ic(t){const e=[];t instanceof Array||(t=[t]);for(let n=0;nt.maxOffset)throw new Gn.b("move-operation-nodes-do-not-exist: The nodes which should be moved do not exist.",this);if(t===e&&n=n&&this.targetPosition.path[t]t._clone(!0))),e=new hc(this.position,t,this.baseVersion);return e.shouldReceiveAttributes=this.shouldReceiveAttributes,e}getReversed(){const t=this.position.root.document.graveyard,e=new Ys(t,[0]);return new dc(this.position,this.nodes.maxOffset,e,this.baseVersion+1)}_validate(){const t=this.position.parent;if(!t||t.maxOffsett._clone(!0))),tc(this.position,t)}toJSON(){const t=super.toJSON();return t.position=this.position.toJSON(),t.nodes=this.nodes.toJSON(),t}static get className(){return"InsertOperation"}static fromJSON(t,e){const n=[];for(const e of t.nodes)e.name?n.push(Us.fromJSON(e)):n.push(zs.fromJSON(e));const i=new hc(Ys.fromJSON(t.position,e),n,t.baseVersion);return i.shouldReceiveAttributes=t.shouldReceiveAttributes,i}}class uc extends Za{constructor(t,e,n,i,o,r){super(r),this.name=t,this.oldRange=e?e.clone():null,this.newRange=n?n.clone():null,this.affectsData=o,this._markers=i}get type(){return"marker"}clone(){return new uc(this.name,this.oldRange,this.newRange,this._markers,this.affectsData,this.baseVersion)}getReversed(){return new uc(this.name,this.newRange,this.oldRange,this._markers,this.affectsData,this.baseVersion+1)}_execute(){const t=this.newRange?"_set":"_remove";this._markers[t](this.name,this.newRange,!0,this.affectsData)}toJSON(){const t=super.toJSON();return this.oldRange&&(t.oldRange=this.oldRange.toJSON()),this.newRange&&(t.newRange=this.newRange.toJSON()),delete t._markers,t}static get className(){return"MarkerOperation"}static fromJSON(t,e){return new uc(t.name,t.oldRange?$s.fromJSON(t.oldRange,e):null,t.newRange?$s.fromJSON(t.newRange,e):null,e.model.markers,t.affectsData,t.baseVersion)}}class fc extends Za{constructor(t,e,n,i){super(i),this.position=t,this.position.stickiness="toNext",this.oldName=e,this.newName=n}get type(){return"rename"}clone(){return new fc(this.position.clone(),this.oldName,this.newName,this.baseVersion)}getReversed(){return new fc(this.position.clone(),this.newName,this.oldName,this.baseVersion+1)}_validate(){const t=this.position.nodeAfter;if(!(t instanceof Us))throw new Gn.b("rename-operation-wrong-position: Given position is invalid or node after it is not an instance of Element.",this);if(t.name!==this.oldName)throw new Gn.b("rename-operation-wrong-name: Element to change has different name than operation's old name.",this)}_execute(){this.position.nodeAfter.name=this.newName}toJSON(){const t=super.toJSON();return t.position=this.position.toJSON(),t}static get className(){return"RenameOperation"}static fromJSON(t,e){return new fc(Ys.fromJSON(t.position,e),t.oldName,t.newName,t.baseVersion)}}class gc extends Za{constructor(t,e,n,i,o){super(o),this.root=t,this.key=e,this.oldValue=n,this.newValue=i}get type(){return null===this.oldValue?"addRootAttribute":null===this.newValue?"removeRootAttribute":"changeRootAttribute"}clone(){return new gc(this.root,this.key,this.oldValue,this.newValue,this.baseVersion)}getReversed(){return new gc(this.root,this.key,this.newValue,this.oldValue,this.baseVersion+1)}_validate(){if(this.root!=this.root.root||this.root.is("documentFragment"))throw new Gn.b("rootattribute-operation-not-a-root: The element to change is not a root element.",this,{root:this.root,key:this.key});if(null!==this.oldValue&&this.root.getAttribute(this.key)!==this.oldValue)throw new Gn.b("rootattribute-operation-wrong-old-value: Changed node has different attribute value than operation's old attribute value.",this,{root:this.root,key:this.key});if(null===this.oldValue&&null!==this.newValue&&this.root.hasAttribute(this.key))throw new Gn.b("rootattribute-operation-attribute-exists: The attribute with given key already exists.",this,{root:this.root,key:this.key})}_execute(){null!==this.newValue?this.root._setAttribute(this.key,this.newValue):this.root._removeAttribute(this.key)}toJSON(){const t=super.toJSON();return t.root=this.root.toJSON(),t}static get className(){return"RootAttributeOperation"}static fromJSON(t,e){if(!e.getRoot(t.root))throw new Gn.b("rootattribute-operation-fromjson-no-root: Cannot create RootAttributeOperation. Root with specified name does not exist.",this,{rootName:t.root});return new gc(e.getRoot(t.root),t.key,t.oldValue,t.newValue,t.baseVersion)}}class mc extends Za{constructor(t,e,n,i,o){super(o),this.sourcePosition=t.clone(),this.sourcePosition.stickiness="toPrevious",this.howMany=e,this.targetPosition=n.clone(),this.targetPosition.stickiness="toNext",this.graveyardPosition=i.clone()}get type(){return"merge"}get deletionPosition(){return new Ys(this.sourcePosition.root,this.sourcePosition.path.slice(0,-1))}get movedRange(){const t=this.sourcePosition.getShiftedBy(Number.POSITIVE_INFINITY);return new $s(this.sourcePosition,t)}clone(){return new this.constructor(this.sourcePosition,this.howMany,this.targetPosition,this.graveyardPosition,this.baseVersion)}getReversed(){const t=this.targetPosition._getTransformedByMergeOperation(this),e=this.sourcePosition.path.slice(0,-1),n=new Ys(this.sourcePosition.root,e)._getTransformedByMergeOperation(this),i=new pc(t,this.howMany,this.graveyardPosition,this.baseVersion+1);return i.insertionPosition=n,i}_validate(){const t=this.sourcePosition.parent,e=this.targetPosition.parent;if(!t.parent)throw new Gn.b("merge-operation-source-position-invalid: Merge source position is invalid.",this);if(!e.parent)throw new Gn.b("merge-operation-target-position-invalid: Merge target position is invalid.",this);if(this.howMany!=t.maxOffset)throw new Gn.b("merge-operation-how-many-invalid: Merge operation specifies wrong number of nodes to move.",this)}_execute(){const t=this.sourcePosition.parent;nc($s._createIn(t),this.targetPosition),nc($s._createOn(t),this.graveyardPosition)}toJSON(){const t=super.toJSON();return t.sourcePosition=t.sourcePosition.toJSON(),t.targetPosition=t.targetPosition.toJSON(),t.graveyardPosition=t.graveyardPosition.toJSON(),t}static get className(){return"MergeOperation"}static fromJSON(t,e){const n=Ys.fromJSON(t.sourcePosition,e),i=Ys.fromJSON(t.targetPosition,e),o=Ys.fromJSON(t.graveyardPosition,e);return new this(n,t.howMany,i,o,t.baseVersion)}}class pc extends Za{constructor(t,e,n,i){super(i),this.splitPosition=t.clone(),this.splitPosition.stickiness="toNext",this.howMany=e,this.insertionPosition=pc.getInsertionPosition(t),this.insertionPosition.stickiness="toNone",this.graveyardPosition=n?n.clone():null,this.graveyardPosition&&(this.graveyardPosition.stickiness="toNext")}get type(){return"split"}get moveTargetPosition(){const t=this.insertionPosition.path.slice();return t.push(0),new Ys(this.insertionPosition.root,t)}get movedRange(){const t=this.splitPosition.getShiftedBy(Number.POSITIVE_INFINITY);return new $s(this.splitPosition,t)}clone(){const t=new this.constructor(this.splitPosition,this.howMany,this.graveyardPosition,this.baseVersion);return t.insertionPosition=this.insertionPosition,t}getReversed(){const t=this.splitPosition.root.document.graveyard,e=new Ys(t,[0]);return new mc(this.moveTargetPosition,this.howMany,this.splitPosition,e,this.baseVersion+1)}_validate(){const t=this.splitPosition.parent,e=this.splitPosition.offset;if(!t||t.maxOffset{for(const e of t.getAttributeKeys())this.removeAttribute(e,t)};if(t instanceof $s)for(const n of t.getItems())e(n);else e(t)}move(t,e,n){if(this._assertWriterUsedCorrectly(),!(t instanceof $s))throw new Gn.b("writer-move-invalid-range: Invalid range to move.",this);if(!t.isFlat)throw new Gn.b("writer-move-range-not-flat: Range to move is not flat.",this);const i=Ys._createAt(e,n);if(i.isEqual(t.start))return;if(this._addOperationForAffectedMarkers("move",t),!xc(t.root,i.root))throw new Gn.b("writer-move-different-document: Range is going to be moved between different documents.",this);const o=t.root.document?t.root.document.version:null,r=new dc(t.start,t.end.offset-t.start.offset,i,o);this.batch.addOperation(r),this.model.applyOperation(r)}remove(t){this._assertWriterUsedCorrectly();const e=(t instanceof $s?t:$s._createOn(t)).getMinimalFlatRanges().reverse();for(const t of e)this._addOperationForAffectedMarkers("move",t),yc(t.start,t.end.offset-t.start.offset,this.batch,this.model)}merge(t){this._assertWriterUsedCorrectly();const e=t.nodeBefore,n=t.nodeAfter;if(this._addOperationForAffectedMarkers("merge",t),!(e instanceof Us))throw new Gn.b("writer-merge-no-element-before: Node before merge position must be an element.",this);if(!(n instanceof Us))throw new Gn.b("writer-merge-no-element-after: Node after merge position must be an element.",this);t.root.document?this._merge(t):this._mergeDetached(t)}createPositionFromPath(t,e,n){return this.model.createPositionFromPath(t,e,n)}createPositionAt(t,e){return this.model.createPositionAt(t,e)}createPositionAfter(t){return this.model.createPositionAfter(t)}createPositionBefore(t){return this.model.createPositionBefore(t)}createRange(t,e){return this.model.createRange(t,e)}createRangeIn(t){return this.model.createRangeIn(t)}createRangeOn(t){return this.model.createRangeOn(t)}createSelection(t,e,n){return this.model.createSelection(t,e,n)}_mergeDetached(t){const e=t.nodeBefore,n=t.nodeAfter;this.move($s._createIn(n),Ys._createAt(e,"end")),this.remove(n)}_merge(t){const e=Ys._createAt(t.nodeBefore,"end"),n=Ys._createAt(t.nodeAfter,0),i=t.root.document.graveyard,o=new Ys(i,[0]),r=t.root.document.version,s=new mc(n,t.nodeAfter.maxOffset,e,o,r);this.batch.addOperation(s),this.model.applyOperation(s)}rename(t,e){if(this._assertWriterUsedCorrectly(),!(t instanceof Us))throw new Gn.b("writer-rename-not-element-instance: Trying to rename an object which is not an instance of Element.",this);const n=t.root.document?t.root.document.version:null,i=new fc(Ys._createBefore(t),t.name,e,n);this.batch.addOperation(i),this.model.applyOperation(i)}split(t,e){this._assertWriterUsedCorrectly();let n,i,o=t.parent;if(!o.parent)throw new Gn.b("writer-split-element-no-parent: Element with no parent can not be split.",this);if(e||(e=o.parent),!t.parent.getAncestors({includeSelf:!0}).includes(e))throw new Gn.b("writer-split-invalid-limit-element: Limit element is not a position ancestor.",this);do{const e=o.root.document?o.root.document.version:null,r=o.maxOffset-t.offset,s=new pc(t,r,null,e);this.batch.addOperation(s),this.model.applyOperation(s),n||i||(n=o,i=t.parent.nextSibling),o=(t=this.createPositionAfter(t.parent)).parent}while(o!==e);return{position:t,range:new $s(Ys._createAt(n,"end"),Ys._createAt(i,0))}}wrap(t,e){if(this._assertWriterUsedCorrectly(),!t.isFlat)throw new Gn.b("writer-wrap-range-not-flat: Range to wrap is not flat.",this);const n=e instanceof Us?e:new Us(e);if(n.childCount>0)throw new Gn.b("writer-wrap-element-not-empty: Element to wrap with is not empty.",this);if(null!==n.parent)throw new Gn.b("writer-wrap-element-attached: Element to wrap with is already attached to tree model.",this);this.insert(n,t.start);const i=new $s(t.start.getShiftedBy(1),t.end.getShiftedBy(1));this.move(i,Ys._createAt(n,0))}unwrap(t){if(this._assertWriterUsedCorrectly(),null===t.parent)throw new Gn.b("writer-unwrap-element-no-parent: Trying to unwrap an element which has no parent.",this);this.move($s._createIn(t),this.createPositionAfter(t)),this.remove(t)}addMarker(t,e){if(this._assertWriterUsedCorrectly(),!e||"boolean"!=typeof e.usingOperation)throw new Gn.b("writer-addMarker-no-usingOperation: The options.usingOperation parameter is required when adding a new marker.",this);const n=e.usingOperation,i=e.range,o=void 0!==e.affectsData&&e.affectsData;if(this.model.markers.has(t))throw new Gn.b("writer-addMarker-marker-exists: Marker with provided name already exists.",this);if(!i)throw new Gn.b("writer-addMarker-no-range: Range parameter is required when adding a new marker.",this);return n?(vc(this,t,null,i,o),this.model.markers.get(t)):this.model.markers._set(t,i,n,o)}updateMarker(t,e){this._assertWriterUsedCorrectly();const n="string"==typeof t?t:t.name,i=this.model.markers.get(n);if(!i)throw new Gn.b("writer-updateMarker-marker-not-exists: Marker with provided name does not exists.",this);if(!e)return void this.model.markers._refresh(i);const o="boolean"==typeof e.usingOperation,r="boolean"==typeof e.affectsData,s=r?e.affectsData:i.affectsData;if(!o&&!e.range&&!r)throw new Gn.b("writer-updateMarker-wrong-options: One of the options is required - provide range, usingOperations or affectsData.",this);const a=i.getRange(),c=e.range?e.range:a;o&&e.usingOperation!==i.managedUsingOperations?e.usingOperation?vc(this,n,null,c,s):(vc(this,n,a,null,s),this.model.markers._set(n,c,void 0,s)):i.managedUsingOperations?vc(this,n,a,c,s):this.model.markers._set(n,c,void 0,s)}removeMarker(t){this._assertWriterUsedCorrectly();const e="string"==typeof t?t:t.name;if(!this.model.markers.has(e))throw new Gn.b("writer-removeMarker-no-marker: Trying to remove marker which does not exist.",this);const n=this.model.markers.get(e);n.managedUsingOperations?vc(this,e,n.getRange(),null,n.affectsData):this.model.markers._remove(e)}setSelection(t,e,n){this._assertWriterUsedCorrectly(),this.model.document.selection._setTo(t,e,n)}setSelectionFocus(t,e){this._assertWriterUsedCorrectly(),this.model.document.selection._setFocus(t,e)}setSelectionAttribute(t,e){if(this._assertWriterUsedCorrectly(),"string"==typeof t)this._setSelectionAttribute(t,e);else for(const[e,n]of js(t))this._setSelectionAttribute(e,n)}removeSelectionAttribute(t){if(this._assertWriterUsedCorrectly(),"string"==typeof t)this._removeSelectionAttribute(t);else for(const e of t)this._removeSelectionAttribute(e)}overrideSelectionGravity(){return this.model.document.selection._overrideGravity()}restoreSelectionGravity(t){this.model.document.selection._restoreGravity(t)}_setSelectionAttribute(t,e){const n=this.model.document.selection;if(n.isCollapsed&&n.anchor.parent.isEmpty){const i=sa._getStoreAttributeKey(t);this.setAttribute(i,e,n.anchor.parent)}n._setAttribute(t,e)}_removeSelectionAttribute(t){const e=this.model.document.selection;if(e.isCollapsed&&e.anchor.parent.isEmpty){const n=sa._getStoreAttributeKey(t);this.removeAttribute(n,e.anchor.parent)}e._removeAttribute(t)}_assertWriterUsedCorrectly(){if(this.model._currentWriter!==this)throw new Gn.b("writer-incorrect-use: Trying to use a writer outside the change() block.",this)}_addOperationForAffectedMarkers(t,e){for(const n of this.model.markers){if(!n.managedUsingOperations)continue;const i=n.getRange();let o=!1;if("move"==t)o=e.containsPosition(i.start)||e.start.isEqual(i.start)||e.containsPosition(i.end)||e.end.isEqual(i.end);else{const t=e.nodeBefore,n=e.nodeAfter,r=i.start.parent==t&&i.start.isAtEnd,s=i.end.parent==n&&0==i.end.offset,a=i.end.nodeAfter==n,c=i.start.nodeAfter==n;o=r||s||a||c}o&&this.updateMarker(n.name,{range:i})}}}function kc(t,e,n,i){const o=t.model,r=o.document;let s,a,c,l=i.start;for(const t of i.getWalker({shallow:!0}))c=t.item.getAttribute(e),s&&a!=c&&(a!=n&&d(),l=s),s=t.nextPosition,a=c;function d(){const i=new $s(l,s),c=i.root.document?r.version:null,d=new cc(i,e,a,n,c);t.batch.addOperation(d),o.applyOperation(d)}s instanceof Ys&&s!=l&&a!=n&&d()}function _c(t,e,n,i){const o=t.model,r=o.document,s=i.getAttribute(e);let a,c;if(s!=n){if(i.root===i){const t=i.document?r.version:null;c=new gc(i,e,s,n,t)}else{const o=(a=new $s(Ys._createBefore(i),t.createPositionAfter(i))).root.document?r.version:null;c=new cc(a,e,s,n,o)}t.batch.addOperation(c),o.applyOperation(c)}}function vc(t,e,n,i,o){const r=t.model,s=r.document,a=new uc(e,n,i,r.markers,o,s.version);t.batch.addOperation(a),r.applyOperation(a)}function yc(t,e,n,i){let o;if(t.root.document){const n=i.document,r=new Ys(n.graveyard,[0]);o=new dc(t,e,r,n.version)}else o=new lc(t,e);n.addOperation(o),i.applyOperation(o)}function xc(t,e){return t===e||t instanceof bc&&e instanceof bc}class Ac{constructor(t){this._markerCollection=t,this._changesInElement=new Map,this._elementSnapshots=new Map,this._changedMarkers=new Map,this._changeCount=0,this._cachedChanges=null,this._cachedChangesWithGraveyard=null}get isEmpty(){return 0==this._changesInElement.size&&0==this._changedMarkers.size}refreshItem(t){if(this._isInInsertedElement(t.parent))return;this._markRemove(t.parent,t.startOffset,t.offsetSize),this._markInsert(t.parent,t.startOffset,t.offsetSize);const e=$s._createOn(t);for(const t of this._markerCollection.getMarkersIntersectingRange(e)){const e=t.getRange();this.bufferMarkerChange(t.name,e,e,t.affectsData)}this._cachedChanges=null}bufferOperation(t){switch(t.type){case"insert":if(this._isInInsertedElement(t.position.parent))return;this._markInsert(t.position.parent,t.position.offset,t.nodes.maxOffset);break;case"addAttribute":case"removeAttribute":case"changeAttribute":for(const e of t.range.getItems({shallow:!0}))this._isInInsertedElement(e.parent)||this._markAttribute(e);break;case"remove":case"move":case"reinsert":{if(t.sourcePosition.isEqual(t.targetPosition)||t.sourcePosition.getShiftedBy(t.howMany).isEqual(t.targetPosition))return;const e=this._isInInsertedElement(t.sourcePosition.parent),n=this._isInInsertedElement(t.targetPosition.parent);e||this._markRemove(t.sourcePosition.parent,t.sourcePosition.offset,t.howMany),n||this._markInsert(t.targetPosition.parent,t.getMovedRangeStart().offset,t.howMany);break}case"rename":{if(this._isInInsertedElement(t.position.parent))return;this._markRemove(t.position.parent,t.position.offset,1),this._markInsert(t.position.parent,t.position.offset,1);const e=$s._createFromPositionAndShift(t.position,1);for(const t of this._markerCollection.getMarkersIntersectingRange(e)){const e=t.getRange();this.bufferMarkerChange(t.name,e,e,t.affectsData)}break}case"split":{const e=t.splitPosition.parent;this._isInInsertedElement(e)||this._markRemove(e,t.splitPosition.offset,t.howMany),this._isInInsertedElement(t.insertionPosition.parent)||this._markInsert(t.insertionPosition.parent,t.insertionPosition.offset,1),t.graveyardPosition&&this._markRemove(t.graveyardPosition.parent,t.graveyardPosition.offset,1);break}case"merge":{const e=t.sourcePosition.parent;this._isInInsertedElement(e.parent)||this._markRemove(e.parent,e.startOffset,1);const n=t.graveyardPosition.parent;this._markInsert(n,t.graveyardPosition.offset,1);const i=t.targetPosition.parent;this._isInInsertedElement(i)||this._markInsert(i,t.targetPosition.offset,e.maxOffset);break}}this._cachedChanges=null}bufferMarkerChange(t,e,n,i){const o=this._changedMarkers.get(t);o?(o.newRange=n,o.affectsData=i,null==o.oldRange&&null==o.newRange&&this._changedMarkers.delete(t)):this._changedMarkers.set(t,{oldRange:e,newRange:n,affectsData:i})}getMarkersToRemove(){const t=[];for(const[e,n]of this._changedMarkers)null!=n.oldRange&&t.push({name:e,range:n.oldRange});return t}getMarkersToAdd(){const t=[];for(const[e,n]of this._changedMarkers)null!=n.newRange&&t.push({name:e,range:n.newRange});return t}getChangedMarkers(){return Array.from(this._changedMarkers).map(t=>({name:t[0],data:{oldRange:t[1].oldRange,newRange:t[1].newRange}}))}hasDataChanges(){for(const[,t]of this._changedMarkers)if(t.affectsData)return!0;return this._changesInElement.size>0}getChanges(t={includeChangesInGraveyard:!1}){if(this._cachedChanges)return t.includeChangesInGraveyard?this._cachedChangesWithGraveyard.slice():this._cachedChanges.slice();const e=[];for(const t of this._changesInElement.keys()){const n=this._changesInElement.get(t).sort((t,e)=>t.offset===e.offset?t.type!=e.type?"remove"==t.type?-1:1:0:t.offsett.position.root!=e.position.root?t.position.root.rootNamen.offset){if(i>o){const t={type:"attribute",offset:o,howMany:i-o,count:this._changeCount++};this._handleChange(t,e),e.push(t)}t.nodesToHandle=n.offset-t.offset,t.howMany=t.nodesToHandle}else t.offset>=n.offset&&t.offseto?(t.nodesToHandle=i-o,t.offset=o):t.nodesToHandle=0);if("remove"==n.type&&t.offsetn.offset){const o={type:"attribute",offset:n.offset,howMany:i-n.offset,count:this._changeCount++};this._handleChange(o,e),e.push(o),t.nodesToHandle=n.offset-t.offset,t.howMany=t.nodesToHandle}"attribute"==n.type&&(t.offset>=n.offset&&i<=o?(t.nodesToHandle=0,t.howMany=0,t.offset=0):t.offset<=n.offset&&i>=o&&(n.howMany=0))}}t.howMany=t.nodesToHandle,delete t.nodesToHandle}_getInsertDiff(t,e,n){return{type:"insert",position:Ys._createAt(t,e),name:n,length:1,changeCount:this._changeCount++}}_getRemoveDiff(t,e,n){return{type:"remove",position:Ys._createAt(t,e),name:n,length:1,changeCount:this._changeCount++}}_getAttributesDiff(t,e,n){const i=[];n=new Map(n);for(const[o,r]of e){const e=n.has(o)?n.get(o):null;e!==r&&i.push({type:"attribute",position:t.start,range:t.clone(),length:1,attributeKey:o,attributeOldValue:r,attributeNewValue:e,changeCount:this._changeCount++}),n.delete(o)}for(const[e,o]of n)i.push({type:"attribute",position:t.start,range:t.clone(),length:1,attributeKey:e,attributeOldValue:null,attributeNewValue:o,changeCount:this._changeCount++});return i}_isInInsertedElement(t){const e=t.parent;if(!e)return!1;const n=this._changesInElement.get(e),i=t.startOffset;if(n)for(const t of n)if("insert"==t.type&&i>=t.offset&&ii){for(let e=0;e{const n=e[0];if(n.isDocumentOperation&&n.baseVersion!==this.version)throw new Gn.b("model-document-applyOperation-wrong-version: Only operations with matching versions can be applied.",this,{operation:n})},{priority:"highest"}),this.listenTo(t,"applyOperation",(t,e)=>{const n=e[0];n.isDocumentOperation&&this.differ.bufferOperation(n)},{priority:"high"}),this.listenTo(t,"applyOperation",(t,e)=>{const n=e[0];n.isDocumentOperation&&(this.version++,this.history.addOperation(n))},{priority:"low"}),this.listenTo(this.selection,"change",()=>{this._hasSelectionChangedFromTheLastChangeBlock=!0}),this.listenTo(t.markers,"update",(t,e,n,i)=>{this.differ.bufferMarkerChange(e.name,n,i,e.affectsData),null===n&&e.on("change",(t,n)=>{this.differ.bufferMarkerChange(e.name,n,e.getRange(),e.affectsData)})})}get graveyard(){return this.getRoot(Ic)}createRoot(t="$root",e="main"){if(this.roots.get(e))throw new Gn.b("model-document-createRoot-name-exists: Root with specified name already exists.",this,{name:e});const n=new bc(this,t,e);return this.roots.add(n),n}destroy(){this.selection.destroy(),this.stopListening()}getRoot(t="main"){return this.roots.get(t)}getRootNames(){return Array.from(this.roots,t=>t.rootName).filter(t=>t!=Ic)}registerPostFixer(t){this._postFixers.add(t)}toJSON(){const t=hi(this);return t.selection="[engine.model.DocumentSelection]",t.model="[engine.model.Model]",t}_handleChangeBlock(t){this._hasDocumentChangedFromTheLastChangeBlock()&&(this._callPostFixers(t),this.selection.refresh(),this.differ.hasDataChanges()?this.fire("change:data",t.batch):this.fire("change",t.batch),this.selection.refresh(),this.differ.reset()),this._hasSelectionChangedFromTheLastChangeBlock=!1}_hasDocumentChangedFromTheLastChangeBlock(){return!this.differ.isEmpty||this._hasSelectionChangedFromTheLastChangeBlock}_getDefaultRoot(){for(const t of this.roots)if(t!==this.graveyard)return t;return this.graveyard}_getDefaultRange(){const t=this._getDefaultRoot(),e=this.model,n=e.schema,i=e.createPositionFromPath(t,[0]);return n.getNearestSelectionRange(i)||e.createRange(i)}_validateSelectionRange(t){return Oc(t.start)&&Oc(t.end)}_callPostFixers(t){let e=!1;do{for(const n of this._postFixers)if(this.selection.refresh(),e=n(t))break}while(e)}}function Oc(t){const e=t.textNode;if(e){const n=e.data,i=t.offset-e.startOffset;return!Mc(n,i)&&!Ec(n,i)}return!0}ci(Nc,ei);class Rc{constructor(){this._markers=new Map}[Symbol.iterator](){return this._markers.values()}has(t){return this._markers.has(t)}get(t){return this._markers.get(t)||null}_set(t,e,n=!1,i=!1){const o=t instanceof Dc?t.name:t,r=this._markers.get(o);if(r){const t=r.getRange();let s=!1;return t.isEqual(e)||(r._attachLiveRange(oa.fromRange(e)),s=!0),n!=r.managedUsingOperations&&(r._managedUsingOperations=n,s=!0),"boolean"==typeof i&&i!=r.affectsData&&(r._affectsData=i,s=!0),s&&this.fire("update:"+o,r,t,e),r}const s=oa.fromRange(e),a=new Dc(o,s,n,i);return this._markers.set(o,a),this.fire("update:"+o,a,null,e),a}_remove(t){const e=t instanceof Dc?t.name:t,n=this._markers.get(e);return!!n&&(this._markers.delete(e),this.fire("update:"+e,n,n.getRange(),null),this._destroyMarker(n),!0)}_refresh(t){const e=t instanceof Dc?t.name:t,n=this._markers.get(e);if(!n)throw new Gn.b("markercollection-refresh-marker-not-exists: Marker with provided name does not exists.",this);const i=n.getRange();this.fire("update:"+e,n,i,i,n.managedUsingOperations,n.affectsData)}*getMarkersAtPosition(t){for(const e of this)e.getRange().containsPosition(t)&&(yield e)}*getMarkersIntersectingRange(t){for(const e of this)null!==e.getRange().getIntersection(t)&&(yield e)}destroy(){for(const t of this._markers.values())this._destroyMarker(t);this._markers=null,this.stopListening()}*getMarkersGroup(t){for(const e of this._markers.values())e.name.startsWith(t+":")&&(yield e)}_destroyMarker(t){t.stopListening(),t._detachLiveRange()}}ci(Rc,ei);class Dc{constructor(t,e,n,i){this.name=t,this._liveRange=this._attachLiveRange(e),this._managedUsingOperations=n,this._affectsData=i}get managedUsingOperations(){if(!this._liveRange)throw new Gn.b("marker-destroyed: Cannot use a destroyed marker instance.",this);return this._managedUsingOperations}get affectsData(){if(!this._liveRange)throw new Gn.b("marker-destroyed: Cannot use a destroyed marker instance.",this);return this._affectsData}getStart(){if(!this._liveRange)throw new Gn.b("marker-destroyed: Cannot use a destroyed marker instance.",this);return this._liveRange.start.clone()}getEnd(){if(!this._liveRange)throw new Gn.b("marker-destroyed: Cannot use a destroyed marker instance.",this);return this._liveRange.end.clone()}getRange(){if(!this._liveRange)throw new Gn.b("marker-destroyed: Cannot use a destroyed marker instance.",this);return this._liveRange.toRange()}is(t){return"marker"==t||"model:marker"==t}_attachLiveRange(t){return this._liveRange&&this._detachLiveRange(),t.delegate("change:range").to(this),t.delegate("change:content").to(this),this._liveRange=t,t}_detachLiveRange(){this._liveRange.stopDelegating("change:range",this),this._liveRange.stopDelegating("change:content",this),this._liveRange.detach(),this._liveRange=null}}ci(Dc,ei);class Lc extends Ys{constructor(t,e,n="toNone"){if(super(t,e,n),!this.root.is("rootElement"))throw new Gn.b("model-liveposition-root-not-rootelement: LivePosition's root has to be an instance of RootElement.",t);(function(){this.listenTo(this.root.document.model,"applyOperation",(t,e)=>{const n=e[0];n.isDocumentOperation&&function(t){const e=this.getTransformedByOperation(t);if(!this.isEqual(e)){const t=this.toPosition();this.path=e.path,this.root=e.root,this.fire("change",t)}}.call(this,n)},{priority:"low"})}).call(this)}detach(){this.stopListening()}is(t){return"livePosition"==t||"model:livePosition"==t||super.is(t)}toPosition(){return new Ys(this.root,this.path.slice(),this.stickiness)}static fromPosition(t,e){return new this(t.root,t.path.slice(),e||t.stickiness)}}ci(Lc,ei);class jc{constructor(t,e,n){this.model=t,this.writer=e,this.position=n,this.canMergeWith=new Set([this.position.parent]),this.schema=t.schema,this._filterAttributesOf=[],this._affectedStart=null,this._affectedEnd=null}handleNodes(t,e){t=Array.from(t);for(let n=0;n{if(!n.doNotResetEntireContent&&function(t,e){const n=t.getLimitElement(e);if(!e.containsEntireContent(n))return!1;const i=e.getFirstRange();if(i.start.parent==i.end.parent)return!1;return t.checkChild(n,"paragraph")}(o,e))return void function(t,e){const n=t.model.schema.getLimitElement(e);t.remove(t.createRangeIn(n)),zc(t,t.createPositionAt(n,0),e)}(t,e);const r=i.start,s=Lc.fromPosition(i.end,"toNext");if(i.start.isTouching(i.end)||t.remove(i),n.leaveUnmerged||(!function t(e,n,i){const o=n.parent;const r=i.parent;if(o==r)return;if(e.model.schema.isLimit(o)||e.model.schema.isLimit(r))return;if(!function(t,e,n){const i=new $s(t,e);for(const t of i.getWalker())if(n.isLimit(t.item))return!1;return!0}(n,i,e.model.schema))return;n=e.createPositionAfter(o);i=e.createPositionBefore(r);i.isEqual(n)||e.insert(r,n);e.merge(n);for(;i.parent.isEmpty;){const t=i.parent;i=e.createPositionBefore(t),e.remove(t)}t(e,n,i)}(t,r,s),o.removeDisallowedAttributes(r.parent.getChildren(),t)),Bc(t,e,r),function(t,e){const n=t.checkChild(e,"$text"),i=t.checkChild(e,"paragraph");return!n&&i}(o,r)){const i=o.getNearestSelectionRange(r);n.doNotAutoparagraph&&i?Bc(t,e,i):zc(t,r,e)}s.detach()})}function zc(t,e,n){const i=t.createElement("paragraph");t.insert(i,e),Bc(t,n,t.createPositionAt(i,0))}function Bc(t,e,n){e instanceof sa?t.setSelection(n):e.setTo(n)}const Fc=' ,.?!:;"-()';function Uc(t,e,n={}){const i=t.schema,o="backward"!=n.direction,r=n.unit?n.unit:"character",s=e.focus,a=new Hs({boundaries:function(t,e){const n=t.root,i=Ys._createAt(n,e?"end":0);return e?new $s(t,i):new $s(i,t)}(s,o),singleCharacters:!0,direction:o?"forward":"backward"}),c={walker:a,schema:i,isForward:o,unit:r};let l;for(;l=a.next();){if(l.done)return;const n=Hc(c,l.value);if(n)return void(e instanceof sa?t.change(t=>{t.setSelectionFocus(n)}):e.setFocus(n))}}function Hc(t,e){if("text"==e.type)return"word"===t.unit?function(t,e){let n=t.position.textNode;if(n){let i=t.position.offset-n.startOffset;for(;!qc(n.data,i,e)&&!Wc(n,i,e);){t.next();const o=e?t.position.nodeAfter:t.position.nodeBefore;if(o&&o.is("text")){const i=o.data.charAt(e?0:o.data.length-1);Fc.includes(i)||(t.next(),n=t.position.textNode)}i=t.position.offset-n.startOffset}}return t.position}(t.walker,t.isForward):function(t,e){const n=t.position.textNode;if(n){const i=n.data;let o=t.position.offset-n.startOffset;for(;Mc(i,o)||"character"==e&&Ec(i,o);)t.next(),o=t.position.offset-n.startOffset}return t.position}(t.walker,t.unit,t.isForward);if(e.type==(t.isForward?"elementStart":"elementEnd")){if(t.schema.isObject(e.item))return Ys._createAt(e.item,t.isForward?"after":"before");if(t.schema.checkChild(e.nextPosition,"$text"))return e.nextPosition}else{if(t.schema.isLimit(e.item))return void t.walker.skip(()=>!0);if(t.schema.checkChild(e.nextPosition,"$text"))return e.nextPosition}}function qc(t,e,n){const i=e+(n?0:-1);return Fc.includes(t.charAt(i))}function Wc(t,e,n){return e===(n?t.endOffset:0)}function Yc(t,e){const n=[];Array.from(t.getItems({direction:"backward"})).map(t=>e.createRangeOn(t)).filter(e=>{return(e.start.isAfter(t.start)||e.start.isEqual(t.start))&&(e.end.isBefore(t.end)||e.end.isEqual(t.end))}).forEach(t=>{n.push(t.start.parent),e.remove(t)}),n.forEach(t=>{let n=t;for(;n.parent&&n.isEmpty;){const t=e.createRangeOn(n);n=n.parent,e.remove(t)}})}function $c(t){t.document.registerPostFixer(e=>(function(t,e){const n=e.document.selection,i=e.schema,o=[];let r=!1;for(const t of n.getRanges()){const e=Gc(t,i);e?(o.push(e),r=!0):o.push(t)}if(r){let e=o;if(o.length>1){const t=o[0].start,n=o[o.length-1].end;e=[new $s(t,n)]}t.setSelection(e,{backward:n.isBackward})}})(e,t))}function Gc(t,e){return t.isCollapsed?function(t,e){const n=t.start,i=e.getNearestSelectionRange(n);if(!i)return null;const o=i.start;if(n.isEqual(o))return null;if(o.nodeAfter&&e.isLimit(o.nodeAfter))return new $s(o,Ys._createAfter(o.nodeAfter));return new $s(o)}(t,e):function(t,e){const n=t.start,i=t.end,o=e.checkChild(n,"$text"),r=e.checkChild(i,"$text"),s=e.getLimitElement(n),a=e.getLimitElement(i);if(s===a){if(o&&r)return null;if(function(t,e,n){const i=t.nodeAfter&&!n.isLimit(t.nodeAfter)||n.checkChild(t,"$text"),o=e.nodeBefore&&!n.isLimit(e.nodeBefore)||n.checkChild(e,"$text");return i||o}(n,i,e)){const t=n.nodeAfter&&e.isObject(n.nodeAfter),o=t?null:e.getNearestSelectionRange(n,"forward"),r=i.nodeBefore&&e.isObject(i.nodeBefore),s=r?null:e.getNearestSelectionRange(i,"backward"),a=o?o.start:n,c=s?s.start:i;return new $s(a,c)}}const c=s&&!s.is("rootElement"),l=a&&!a.is("rootElement");if(c||l){const t=n.nodeAfter&&i.nodeBefore&&n.nodeAfter.parent===i.nodeBefore.parent,o=c&&(!t||!Kc(n.nodeAfter,e)),r=l&&(!t||!Kc(i.nodeBefore,e));let d=n,h=i;return o&&(d=Ys._createBefore(Qc(s,e))),r&&(h=Ys._createAfter(Qc(a,e))),new $s(d,h)}return null}(t,e)}function Qc(t,e){let n=t,i=n;for(;e.isLimit(i)&&i.parent;)n=i,i=i.parent;return n}function Kc(t,e){return t&&e.isObject(t)}class Jc{constructor(){this.markers=new Rc,this.document=new Nc(this),this.schema=new Oa,this._pendingChanges=[],this._currentWriter=null,["insertContent","deleteContent","modifySelection","getSelectedContent","applyOperation"].forEach(t=>this.decorate(t)),this.on("applyOperation",(t,e)=>{e[0]._validate()},{priority:"highest"}),this.schema.register("$root",{isLimit:!0}),this.schema.register("$block",{allowIn:"$root",isBlock:!0}),this.schema.register("$text",{allowIn:"$block",isInline:!0}),this.schema.register("$clipboardHolder",{allowContentOf:"$root",isLimit:!0}),this.schema.extend("$text",{allowIn:"$clipboardHolder"}),this.schema.register("$marker"),this.schema.addChildCheck((t,e)=>{if("$marker"===e.name)return!0}),$c(this)}change(t){try{return 0===this._pendingChanges.length?(this._pendingChanges.push({batch:new Ja,callback:t}),this._runPendingChanges()[0]):t(this._currentWriter)}catch(t){Gn.b.rethrowUnexpectedError(t,this)}}enqueueChange(t,e){try{"string"==typeof t?t=new Ja(t):"function"==typeof t&&(e=t,t=new Ja),this._pendingChanges.push({batch:t,callback:e}),1==this._pendingChanges.length&&this._runPendingChanges()}catch(t){Gn.b.rethrowUnexpectedError(t,this)}}applyOperation(t){t._execute()}insertContent(t,e,n){return function(t,e,n,i){return t.change(o=>{let r;const s=(r=n?n instanceof Xs||n instanceof sa?n:o.createSelection(n,i):t.document.selection).getFirstPosition();r.isCollapsed||t.deleteContent(r,{doNotAutoparagraph:!0});const a=new jc(t,o,s);let c;c=e.is("documentFragment")?e.getChildren():[e],a.handleNodes(c,{isFirst:!0,isLast:!0});const l=a.getSelectionRange();l&&(r instanceof sa?o.setSelection(l):r.setTo(l));const d=a.getAffectedRange()||t.createRange(s);return a.destroy(),d})}(this,t,e,n)}deleteContent(t,e){Vc(this,t,e)}modifySelection(t,e){Uc(this,t,e)}getSelectedContent(t){return function(t,e){return t.change(t=>{const n=t.createDocumentFragment(),i=e.getFirstRange();if(!i||i.isCollapsed)return n;const o=i.start.root,r=i.start.getCommonPath(i.end),s=o.getNodeByPath(r);let a;const c=(a=i.start.parent==i.end.parent?i:t.createRange(t.createPositionAt(s,i.start.path[r.length]),t.createPositionAt(s,i.end.path[r.length]+1))).end.offset-a.start.offset;for(const e of a.getItems({shallow:!0}))e.is("textProxy")?t.appendText(e.data,e.getAttributes(),n):t.append(e._clone(!0),n);if(a!=i){const e=i._getTransformedByMove(a.start,t.createPositionAt(n,0),c)[0],o=t.createRange(t.createPositionAt(n,0),e.start);Yc(t.createRange(e.end,t.createPositionAt(n,"end")),t),Yc(o,t)}return n})}(this,t)}hasContent(t,e){const n=t instanceof Us?$s._createIn(t):t;if(n.isCollapsed)return!1;for(const t of this.markers.getMarkersIntersectingRange(n))if(t.affectsData)return!0;const{ignoreWhitespaces:i=!1}=e||{};for(const t of n.getItems())if(t.is("textProxy")){if(!i)return!0;if(-1!==t.data.search(/\S/))return!0}else if(this.schema.isObject(t))return!0;return!1}createPositionFromPath(t,e,n){return new Ys(t,e,n)}createPositionAt(t,e){return Ys._createAt(t,e)}createPositionAfter(t){return Ys._createAfter(t)}createPositionBefore(t){return Ys._createBefore(t)}createRange(t,e){return new $s(t,e)}createRangeIn(t){return $s._createIn(t)}createRangeOn(t){return $s._createOn(t)}createSelection(t,e,n){return new Xs(t,e,n)}createBatch(t){return new Ja(t)}destroy(){this.document.destroy(),this.stopListening()}_runPendingChanges(){const t=[];for(this.fire("_beforeChanges");this._pendingChanges.length;){const e=this._pendingChanges[0].batch;this._currentWriter=new wc(this,e);const n=this._pendingChanges[0].callback(this._currentWriter);t.push(n),this.document._handleChangeBlock(this._currentWriter),this._pendingChanges.shift(),this._currentWriter=null}return this.fire("_afterChanges"),t}}ci(Jc,Fi);class Zc{constructor(){this._listener=Object.create(cr)}listenTo(t){this._listener.listenTo(t,"keydown",(t,e)=>{this._listener.fire("_keydown:"+wo(e),e)})}set(t,e,n={}){const i=ko(t),o=n.priority;this._listener.listenTo(this._listener,"_keydown:"+i,(t,n)=>{e(n,()=>{n.preventDefault(),n.stopPropagation(),t.stop()}),t.return=!0},{priority:o})}press(t){return!!this._listener.fire("_keydown:"+wo(t),t)}destroy(){this._listener.stopListening()}}class Xc extends Zc{constructor(t){super(),this.editor=t}set(t,e,n={}){if("string"==typeof e){const t=e;e=((e,n)=>{this.editor.execute(t),n()})}super.set(t,e,n)}}class tl{constructor(t){const e=this.constructor.builtinPlugins;this.config=new Yn(t,this.constructor.defaultConfig),this.config.define("plugins",e),this.plugins=new Ta(this,e),this.commands=new Ca;const n=this.config.get("language")||{};this.locale=new Ma({uiLanguage:"string"==typeof n?n:n.ui,contentLanguage:this.config.get("language.content")}),this.t=this.locale.t,this.set("state","initializing"),this.once("ready",()=>this.state="ready",{priority:"high"}),this.once("destroy",()=>this.state="destroyed",{priority:"high"}),this.set("isReadOnly",!1),this.model=new Jc,this.data=new $a(this.model),this.editing=new Aa(this.model),this.editing.view.document.bind("isReadOnly").to(this),this.conversion=new Ga([this.editing.downcastDispatcher,this.data.downcastDispatcher],this.data.upcastDispatcher),this.conversion.addAlias("dataDowncast",this.data.downcastDispatcher),this.conversion.addAlias("editingDowncast",this.editing.downcastDispatcher),this.keystrokes=new Xc(this),this.keystrokes.listenTo(this.editing.view.document)}initPlugins(){const t=this.config,e=t.get("plugins")||[],n=t.get("removePlugins")||[],i=t.get("extraPlugins")||[];return this.plugins.init(e.concat(i),n)}destroy(){let t=Promise.resolve();return"initializing"==this.state&&(t=new Promise(t=>this.once("ready",t))),t.then(()=>{this.fire("destroy"),this.stopListening(),this.commands.destroy()}).then(()=>this.plugins.destroy()).then(()=>{this.model.destroy(),this.data.destroy(),this.editing.destroy(),this.keystrokes.destroy()})}execute(...t){try{this.commands.execute(...t)}catch(t){Gn.b.rethrowUnexpectedError(t,this)}}}ci(tl,Fi);var el={setData(t){this.data.set(t)},getData(t){return this.data.get(t)}};var nl={updateSourceElement(){if(!this.sourceElement)throw new Gn.b("editor-missing-sourceelement: Cannot update the source element of a detached editor.",this);!function(t,e){t instanceof HTMLTextAreaElement&&(t.value=e),t.innerHTML=e}(this.sourceElement,this.data.get())}};class il{getHtml(t){const e=document.implementation.createHTMLDocument("").createElement("div");return e.appendChild(t),e.innerHTML}}class ol{constructor(){this._domParser=new DOMParser,this._domConverter=new or({blockFillerMode:"nbsp"}),this._htmlWriter=new il}toData(t){const e=this._domConverter.viewToDom(t,document);return this._htmlWriter.getHtml(e)}toView(t){const e=this._toDom(t);return this._domConverter.domToView(e)}_toDom(t){const e=this._domParser.parseFromString(t,"text/html"),n=e.createDocumentFragment(),i=e.body.childNodes;for(;i.length>0;)n.appendChild(i[0]);return n}}class rl{constructor(t){this.editor=t,this._components=new Map}*names(){for(const t of this._components.values())yield t.originalName}add(t,e){if(this.has(t))throw new Gn.b("componentfactory-item-exists: The item already exists in the component factory.",this,{name:t});this._components.set(sl(t),{callback:e,originalName:t})}create(t){if(!this.has(t))throw new Gn.b("componentfactory-item-missing: The required component is not registered in the factory.",this,{name:t});return this._components.get(sl(t)).callback(this.editor.locale)}has(t){return this._components.has(sl(t))}}function sl(t){return String(t).toLowerCase()}class al{constructor(){this.set("isFocused",!1),this.set("focusedElement",null),this._elements=new Set,this._nextEventLoopTimeout=null}add(t){if(this._elements.has(t))throw new Gn.b("focusTracker-add-element-already-exist",this);this.listenTo(t,"focus",()=>this._focus(t),{useCapture:!0}),this.listenTo(t,"blur",()=>this._blur(),{useCapture:!0}),this._elements.add(t)}remove(t){t===this.focusedElement&&this._blur(t),this._elements.has(t)&&(this.stopListening(t),this._elements.delete(t))}destroy(){this.stopListening()}_focus(t){clearTimeout(this._nextEventLoopTimeout),this.focusedElement=t,this.isFocused=!0}_blur(){clearTimeout(this._nextEventLoopTimeout),this._nextEventLoopTimeout=setTimeout(()=>{this.focusedElement=null,this.isFocused=!1},0)}}ci(al,cr),ci(al,Fi);class cl{constructor(t){this.editor=t,this.componentFactory=new rl(t),this.focusTracker=new al,this._editableElementsMap=new Map,this.listenTo(t.editing.view.document,"layoutChanged",()=>this.update())}get element(){return null}update(){this.fire("update")}destroy(){this.stopListening(),this.focusTracker.destroy();for(const t of this._editableElementsMap.values())t.ckeditorInstance=null;this._editableElementsMap=new Map}setEditableElement(t,e){this._editableElementsMap.set(t,e),e.ckeditorInstance||(e.ckeditorInstance=this.editor)}getEditableElement(t="main"){return this._editableElementsMap.get(t)}getEditableElementsNames(){return this._editableElementsMap.keys()}get _editableElements(){return console.warn("editor-ui-deprecated-editable-elements: The EditorUI#_editableElements property has been deprecated and will be removed in the near future.",{editorUI:this}),this._editableElementsMap}}ci(cl,ei);n(14);const ll=new WeakMap;function dl(t){const{view:e,element:n,text:i,isDirectHost:o=!0}=t,r=e.document;ll.has(r)||(ll.set(r,new Map),r.registerPostFixer(t=>ul(r,t))),ll.get(r).set(n,{text:i,isDirectHost:o}),e.change(t=>ul(r,t))}function hl(t,e){return!!e.hasClass("ck-placeholder")&&(t.removeClass("ck-placeholder",e),!0)}function ul(t,e){const n=ll.get(t);let i=!1;for(const[t,o]of n)fl(e,t,o)&&(i=!0);return i}function fl(t,e,n){const{text:i,isDirectHost:o}=n,r=o?e:function(t){if(1===t.childCount){const e=t.getChild(0);if(e.is("element")&&!e.is("uiElement"))return e}return null}(e);let s=!1;return!!r&&(n.hostElement=r,r.getAttribute("data-placeholder")!==i&&(t.setAttribute("data-placeholder",i,r),s=!0),!function(t){const e=t.document;if(!e)return!1;const n=!Array.from(t.getChildren()).some(t=>!t.is("uiElement"));if(!e.isFocused&&n)return!0;const i=e.selection.anchor;return!(!n||!i||i.parent===t)}(r)?hl(t,r)&&(s=!0):function(t,e){return!e.hasClass("ck-placeholder")&&(t.addClass("ck-placeholder",e),!0)}(t,r)&&(s=!0),s)}class gl{constructor(){this._replacedElements=[]}replace(t,e){this._replacedElements.push({element:t,newElement:e}),t.style.display="none",e&&t.parentNode.insertBefore(e,t.nextSibling)}restore(){this._replacedElements.forEach(({element:t,newElement:e})=>{t.style.display="",e&&e.remove()}),this._replacedElements=[]}}class ml extends cl{constructor(t,e){super(t),this.view=e,this._toolbarConfig=function(t){return Array.isArray(t)?{items:t}:t?Object.assign({items:[]},t):{items:[]}}(t.config.get("toolbar")),this._elementReplacer=new gl}get element(){return this.view.element}init(t){const e=this.editor,n=this.view,i=e.editing.view,o=n.editable,r=i.document.getRoot();o.name=r.rootName,n.render();const s=o.element;this.setEditableElement(o.name,s),this.focusTracker.add(s),n.editable.bind("isFocused").to(this.focusTracker),i.attachDomRoot(s),t&&this._elementReplacer.replace(t,this.element),this._initPlaceholder(),this._initToolbar(),this.fire("ready")}destroy(){const t=this.view,e=this.editor.editing.view;this._elementReplacer.restore(),e.detachDomRoot(t.editable.name),t.destroy(),super.destroy()}_initToolbar(){const t=this.editor,e=this.view,n=t.editing.view;e.stickyPanel.bind("isActive").to(this.focusTracker,"isFocused"),e.stickyPanel.limiterElement=e.element,this._toolbarConfig.viewportTopOffset&&(e.stickyPanel.viewportTopOffset=this._toolbarConfig.viewportTopOffset),e.toolbar.fillFromConfig(this._toolbarConfig.items,this.componentFactory),function({origin:t,originKeystrokeHandler:e,originFocusTracker:n,toolbar:i,beforeFocus:o,afterBlur:r}){n.add(i.element),e.set("Alt+F10",(t,e)=>{n.isFocused&&!i.focusTracker.isFocused&&(o&&o(),i.focus(),e())}),i.keystrokes.set("Esc",(e,n)=>{i.focusTracker.isFocused&&(t.focus(),r&&r(),n())})}({origin:n,originFocusTracker:this.focusTracker,originKeystrokeHandler:t.keystrokes,toolbar:e.toolbar})}_initPlaceholder(){const t=this.editor,e=t.editing.view,n=e.document.getRoot(),i=t.sourceElement,o=t.config.get("placeholder")||i&&"textarea"===i.tagName.toLowerCase()&&i.getAttribute("placeholder");o&&dl({view:e,element:n,text:o,isDirectHost:!1})}}class pl extends oo{constructor(t){super({idProperty:"viewUid"}),this.on("add",(t,e,n)=>{e.isRendered||e.render(),e.element&&this._parentElement&&this._parentElement.insertBefore(e.element,this._parentElement.children[n])}),this.on("remove",(t,e)=>{e.element&&this._parentElement&&e.element.remove()}),this.locale=t,this._parentElement=null}destroy(){this.map(t=>t.destroy())}setParent(t){this._parentElement=t}delegate(...t){if(!t.length||!function(t){return t.every(t=>"string"==typeof t)}(t))throw new Gn.b("ui-viewcollection-delegate-wrong-events: All event names must be strings.",this);return{to:e=>{for(const n of this)for(const i of t)n.delegate(i).to(e);this.on("add",(n,i)=>{for(const n of t)i.delegate(n).to(e)}),this.on("remove",(n,i)=>{for(const n of t)i.stopDelegating(n,e)})}}}}const bl="http://www.w3.org/1999/xhtml";class wl{constructor(t){Object.assign(this,Pl(Cl(t))),this._isRendered=!1,this._revertData=null}render(){const t=this._renderNode({intoFragment:!0});return this._isRendered=!0,t}apply(t){return this._revertData={children:[],bindings:[],attributes:{}},this._renderNode({node:t,isApplying:!0,revertData:this._revertData}),t}revert(t){if(!this._revertData)throw new Gn.b("ui-template-revert-not-applied: Attempting to revert a template which has not been applied yet.",[this,t]);this._revertTemplateFromNode(t,this._revertData)}*getViews(){yield*function*t(e){if(e.children)for(const n of e.children)Nl(n)?yield n:Ol(n)&&(yield*t(n))}(this)}static bind(t,e){return{to:(n,i)=>new _l({eventNameOrFunction:n,attribute:n,observable:t,emitter:e,callback:i}),if:(n,i,o)=>new vl({observable:t,emitter:e,attribute:n,valueIfTrue:i,callback:o})}}static extend(t,e){if(t._isRendered)throw new Gn.b("template-extend-render: Attempting to extend a template which has already been rendered.",[this,t]);!function t(e,n){n.attributes&&(e.attributes||(e.attributes={}),El(e.attributes,n.attributes));n.eventListeners&&(e.eventListeners||(e.eventListeners={}),El(e.eventListeners,n.eventListeners));n.text&&e.text.push(...n.text);if(n.children&&n.children.length){if(e.children.length!=n.children.length)throw new Gn.b("ui-template-extend-children-mismatch: The number of children in extended definition does not match.",e);let i=0;for(const o of n.children)t(e.children[i++],o)}}(t,Pl(Cl(e)))}_renderNode(t){let e;if(e=t.node?this.tag&&this.text:this.tag?this.text:!this.text)throw new Gn.b('ui-template-wrong-syntax: Node definition must have either "tag" or "text" when rendering a new Node.',this);return this.text?this._renderText(t):this._renderElement(t)}_renderElement(t){let e=t.node;return e||(e=t.node=document.createElementNS(this.ns||bl,this.tag)),this._renderAttributes(t),this._renderElementChildren(t),this._setUpListeners(t),e}_renderText(t){let e=t.node;return e?t.revertData.text=e.textContent:e=t.node=document.createTextNode(""),yl(this.text)?this._bindToObservable({schema:this.text,updater:function(t){return{set(e){t.textContent=e},remove(){t.textContent=""}}}(e),data:t}):e.textContent=this.text.join(""),e}_renderAttributes(t){let e,n,i,o;if(!this.attributes)return;const r=t.node,s=t.revertData;for(e in this.attributes)if(i=r.getAttribute(e),n=this.attributes[e],s&&(s.attributes[e]=i),o=B(n[0])&&n[0].ns?n[0].ns:null,yl(n)){const a=o?n[0].value:n;s&&Dl(e)&&a.unshift(i),this._bindToObservable({schema:a,updater:Al(r,e,o),data:t})}else"style"==e&&"string"!=typeof n[0]?this._renderStyleAttribute(n[0],t):(s&&i&&Dl(e)&&n.unshift(i),Il(n=n.map(t=>t&&t.value||t).reduce((t,e)=>t.concat(e),[]).reduce(Ml,""))||r.setAttributeNS(o,e,n))}_renderStyleAttribute(t,e){const n=e.node;for(const i in t){const o=t[i];yl(o)?this._bindToObservable({schema:[o],updater:Tl(n,i),data:e}):n.style[i]=o}}_renderElementChildren(t){const e=t.node,n=t.intoFragment?document.createDocumentFragment():e,i=t.isApplying;let o=0;for(const r of this.children)if(Rl(r)){if(!i){r.setParent(e);for(const t of r)n.appendChild(t.element)}}else if(Nl(r))i||(r.isRendered||r.render(),n.appendChild(r.element));else if(Ko(r))n.appendChild(r);else if(i){const e={children:[],bindings:[],attributes:{}};t.revertData.children.push(e),r._renderNode({node:n.childNodes[o++],isApplying:!0,revertData:e})}else n.appendChild(r.render());t.intoFragment&&e.appendChild(n)}_setUpListeners(t){if(this.eventListeners)for(const e in this.eventListeners){const n=this.eventListeners[e].map(n=>{const[i,o]=e.split("@");return n.activateDomEventListener(i,o,t)});t.revertData&&t.revertData.bindings.push(n)}}_bindToObservable({schema:t,updater:e,data:n}){const i=n.revertData;xl(t,e,n);const o=t.filter(t=>!Il(t)).filter(t=>t.observable).map(i=>i.activateAttributeListener(t,e,n));i&&i.bindings.push(o)}_revertTemplateFromNode(t,e){for(const t of e.bindings)for(const e of t)e();if(e.text)t.textContent=e.text;else{for(const n in e.attributes){const i=e.attributes[n];null===i?t.removeAttribute(n):t.setAttribute(n,i)}for(let n=0;nxl(t,e,n);return this.emitter.listenTo(this.observable,"change:"+this.attribute,i),()=>{this.emitter.stopListening(this.observable,"change:"+this.attribute,i)}}}class _l extends kl{activateDomEventListener(t,e,n){const i=(t,n)=>{e&&!n.target.matches(e)||("function"==typeof this.eventNameOrFunction?this.eventNameOrFunction(n):this.observable.fire(this.eventNameOrFunction,n))};return this.emitter.listenTo(n.node,t,i),()=>{this.emitter.stopListening(n.node,t,i)}}}class vl extends kl{getValue(t){return!Il(super.getValue(t))&&(this.valueIfTrue||!0)}}function yl(t){return!!t&&(t.value&&(t=t.value),Array.isArray(t)?t.some(yl):t instanceof kl)}function xl(t,e,{node:n}){let i=function(t,e){return t.map(t=>t instanceof kl?t.getValue(e):t)}(t,n);Il(i=1==t.length&&t[0]instanceof vl?i[0]:i.reduce(Ml,""))?e.remove():e.set(i)}function Al(t,e,n){return{set(i){t.setAttributeNS(n,e,i)},remove(){t.removeAttributeNS(n,e)}}}function Tl(t,e){return{set(n){t.style[e]=n},remove(){t.style[e]=null}}}function Cl(t){return qn(t,t=>{if(t&&(t instanceof kl||Ol(t)||Nl(t)||Rl(t)))return t})}function Pl(t){if("string"==typeof t?t=function(t){return{text:[t]}}(t):t.text&&function(t){Array.isArray(t.text)||(t.text=[t.text])}(t),t.on&&(t.eventListeners=function(t){for(const e in t)Sl(t,e);return t}(t.on),delete t.on),!t.text){t.attributes&&function(t){for(const e in t)t[e].value&&(t[e].value=[].concat(t[e].value)),Sl(t,e)}(t.attributes);const e=[];if(t.children)if(Rl(t.children))e.push(t.children);else for(const n of t.children)Ol(n)||Nl(n)||Ko(n)?e.push(n):e.push(new wl(n));t.children=e}return t}function Sl(t,e){Array.isArray(t[e])||(t[e]=[t[e]])}function Ml(t,e){return Il(e)?t:Il(t)?e:`${t} ${e}`}function El(t,e){for(const n in e)t[n]?t[n].push(...e[n]):t[n]=e[n]}function Il(t){return!t&&0!==t}function Nl(t){return t instanceof Ll}function Ol(t){return t instanceof wl}function Rl(t){return t instanceof pl}function Dl(t){return"class"==t||"style"==t}n(16);class Ll{constructor(t){this.element=null,this.isRendered=!1,this.locale=t,this.t=t&&t.t,this._viewCollections=new oo,this._unboundChildren=this.createCollection(),this._viewCollections.on("add",(e,n)=>{n.locale=t}),this.decorate("render")}get bindTemplate(){return this._bindTemplate?this._bindTemplate:this._bindTemplate=wl.bind(this,this)}createCollection(){const t=new pl;return this._viewCollections.add(t),t}registerChild(t){pi(t)||(t=[t]);for(const e of t)this._unboundChildren.add(e)}deregisterChild(t){pi(t)||(t=[t]);for(const e of t)this._unboundChildren.remove(e)}setTemplate(t){this.template=new wl(t)}extendTemplate(t){wl.extend(this.template,t)}render(){if(this.isRendered)throw new Gn.b("ui-view-render-already-rendered: This View has already been rendered.",this);this.template&&(this.element=this.template.render(),this.registerChild(this.template.getViews())),this.isRendered=!0}destroy(){this.stopListening(),this._viewCollections.map(t=>t.destroy()),this.template&&this.template._revertData&&this.template.revert(this.element)}}ci(Ll,cr),ci(Ll,Fi);n(18);class jl extends Ll{constructor(t){super(t),this.body=this.createCollection()}render(){super.render(),this._renderBodyCollection()}destroy(){return this._bodyCollectionContainer.remove(),super.destroy()}_renderBodyCollection(){const t=this.locale,e=this._bodyCollectionContainer=new wl({tag:"div",attributes:{class:["ck","ck-reset_all","ck-body","ck-rounded-corners"],dir:t.uiLanguageDirection},children:this.body}).render();document.body.appendChild(e)}}n(20);class Vl extends Ll{constructor(t){super(t),this.set("text"),this.set("for");const e=this.bindTemplate;this.setTemplate({tag:"label",attributes:{class:["ck","ck-label"],for:e.to("for")},children:[{text:e.to("text")}]})}}class zl extends jl{constructor(t){super(t);const e=Jn();this.top=this.createCollection(),this.main=this.createCollection(),this._voiceLabelView=this._createVoiceLabel(e),this.setTemplate({tag:"div",attributes:{class:["ck","ck-reset","ck-editor","ck-rounded-corners"],role:"application",dir:t.uiLanguageDirection,lang:t.uiLanguage,"aria-labelledby":`ck-editor__aria-label_${e}`},children:[this._voiceLabelView,{tag:"div",attributes:{class:["ck","ck-editor__top","ck-reset_all"],role:"presentation"},children:this.top},{tag:"div",attributes:{class:["ck","ck-editor__main"],role:"presentation"},children:this.main}]})}_createVoiceLabel(t){const e=this.t,n=new Vl;return n.text=e("bi"),n.extendTemplate({attributes:{id:`ck-editor__aria-label_${t}`,class:"ck-voice-label"}}),n}}class Bl extends Ll{constructor(t,e,n){super(t),this.setTemplate({tag:"div",attributes:{class:["ck","ck-content","ck-editor__editable","ck-rounded-corners"],lang:t.contentLanguage,dir:t.contentLanguageDirection}}),this.name=null,this.set("isFocused",!1),this._editableElement=n,this._hasExternalElement=!!this._editableElement,this._editingView=e}render(){super.render(),this._hasExternalElement?this.template.apply(this.element=this._editableElement):this._editableElement=this.element,this.on("change:isFocused",()=>this._updateIsFocusedClasses()),this._updateIsFocusedClasses()}destroy(){this._hasExternalElement&&this.template.revert(this._editableElement),super.destroy()}_updateIsFocusedClasses(){const t=this._editingView;function e(e){t.change(n=>{const i=t.document.getRoot(e.name);n.addClass(e.isFocused?"ck-focused":"ck-blurred",i),n.removeClass(e.isFocused?"ck-blurred":"ck-focused",i)})}t.isRenderingInProgress?function n(i){t.once("change:isRenderingInProgress",(t,o,r)=>{r?n(i):e(i)})}(this):e(this)}}class Fl extends Bl{constructor(t,e,n){super(t,e,n),this.extendTemplate({attributes:{role:"textbox",class:"ck-editor__editable_inline"}})}render(){super.render();const t=this._editingView,e=this.t;t.change(n=>{const i=t.document.getRoot(this.name);n.setAttribute("aria-label",e("bu",[this.name]),i)})}}function Ul(t){return e=>e+t}n(22);const Hl=Ul("px");class ql extends Ll{constructor(t){super(t);const e=this.bindTemplate;this.set("isActive",!1),this.set("isSticky",!1),this.set("limiterElement",null),this.set("limiterBottomOffset",50),this.set("viewportTopOffset",0),this.set("_marginLeft",null),this.set("_isStickyToTheLimiter",!1),this.set("_hasViewportTopOffset",!1),this.content=this.createCollection(),this._contentPanelPlaceholder=new wl({tag:"div",attributes:{class:["ck","ck-sticky-panel__placeholder"],style:{display:e.to("isSticky",t=>t?"block":"none"),height:e.to("isSticky",t=>t?Hl(this._panelRect.height):null)}}}).render(),this._contentPanel=new wl({tag:"div",attributes:{class:["ck","ck-sticky-panel__content",e.if("isSticky","ck-sticky-panel__content_sticky"),e.if("_isStickyToTheLimiter","ck-sticky-panel__content_sticky_bottom-limit")],style:{width:e.to("isSticky",t=>t?Hl(this._contentPanelPlaceholder.getBoundingClientRect().width):null),top:e.to("_hasViewportTopOffset",t=>t?Hl(this.viewportTopOffset):null),bottom:e.to("_isStickyToTheLimiter",t=>t?Hl(this.limiterBottomOffset):null),marginLeft:e.to("_marginLeft")}},children:this.content}).render(),this.setTemplate({tag:"div",attributes:{class:["ck","ck-sticky-panel"]},children:[this._contentPanelPlaceholder,this._contentPanel]})}render(){super.render(),this._checkIfShouldBeSticky(),this.listenTo(tr.window,"scroll",()=>{this._checkIfShouldBeSticky()}),this.listenTo(this,"change:isActive",()=>{this._checkIfShouldBeSticky()})}_checkIfShouldBeSticky(){const t=this._panelRect=this._contentPanel.getBoundingClientRect();let e;this.limiterElement?(e=this._limiterRect=this.limiterElement.getBoundingClientRect(),this.isSticky=this.isActive&&e.top{this[e](),n()})}}get first(){return this.focusables.find(Yl)||null}get last(){return this.focusables.filter(Yl).slice(-1)[0]||null}get next(){return this._getFocusableItem(1)}get previous(){return this._getFocusableItem(-1)}get current(){let t=null;return null===this.focusTracker.focusedElement?null:(this.focusables.find((e,n)=>{const i=e.element===this.focusTracker.focusedElement;return i&&(t=n),i}),t)}focusFirst(){this._focus(this.first)}focusLast(){this._focus(this.last)}focusNext(){this._focus(this.next)}focusPrevious(){this._focus(this.previous)}_focus(t){t&&t.focus()}_getFocusableItem(t){const e=this.current,n=this.focusables.length;if(!n)return null;if(null===e)return this[1===t?"first":"last"];let i=(e+n+t)%n;do{const e=this.focusables.get(i);if(Yl(e))return e;i=(i+n+t)%n}while(i!==e);return null}}function Yl(t){return!(!t.focus||"none"==tr.window.getComputedStyle(t.element).display)}class $l extends Ll{constructor(t){super(t),this.setTemplate({tag:"span",attributes:{class:["ck","ck-toolbar__separator"]}})}}const Gl=100;class Ql{constructor(t){this._callback=t,this._elements=new Set,this._previousRects=new Map,this._periodicCheckTimeout=null}observe(t){this._elements.add(t),1===this._elements.size&&this._startPeriodicCheck()}unobserve(t){this._elements.delete(t),this._previousRects.delete(t),this._elements.size||this._stopPeriodicCheck()}disconnect(){this._elements.forEach(t=>this.unobserve(t))}_startPeriodicCheck(){const t=()=>{this._checkElementRectsAndExecuteCallback(),this._periodicCheckTimeout=setTimeout(t,Gl)};this.listenTo(tr.window,"resize",()=>{this._checkElementRectsAndExecuteCallback()}),t()}_stopPeriodicCheck(){clearTimeout(this._periodicCheckTimeout),this.stopListening(),this._previousRects.clear()}_checkElementRectsAndExecuteCallback(){const t=[];for(const e of this._elements)this._hasRectChanged(e)&&t.push({target:e,contentRect:this._previousRects.get(e)});t.length&&this._callback(t)}_hasRectChanged(t){if(!t.ownerDocument.body.contains(t))return!1;const e=new xs(t),n=this._previousRects.get(t),i=!n||!n.isEqual(e);return this._previousRects.set(t,e),i}}ci(Ql,cr);class Kl extends Ll{constructor(t){super(t);const e=this.bindTemplate;this.set("isVisible",!1),this.set("position","se"),this.children=this.createCollection(),this.setTemplate({tag:"div",attributes:{class:["ck","ck-reset","ck-dropdown__panel",e.to("position",t=>`ck-dropdown__panel_${t}`),e.if("isVisible","ck-dropdown__panel-visible")]},children:this.children,on:{selectstart:e.to(t=>t.preventDefault())}})}focus(){this.children.length&&this.children.first.focus()}focusLast(){if(this.children.length){const t=this.children.last;"function"==typeof t.focusLast?t.focusLast():t.focus()}}}n(24);function Jl({element:t,target:e,positions:n,limiter:i,fitInViewport:o}){W(e)&&(e=e()),W(i)&&(i=i());const r=function(t){for(;t&&"html"!=t.tagName.toLowerCase();){if("static"!=tr.window.getComputedStyle(t).position)return t;t=t.parentElement}return null}(t.parentElement),s=new xs(t),a=new xs(e);let c,l;if(i||o){const t=i&&new xs(i).getVisible(),e=o&&new xs(tr.window);[l,c]=function(t,e,n,i,o){let r,s,a=0,c=0;const l=n.getArea();return t.some(t=>{const[d,h]=Zl(t,e,n);let u,f;if(i)if(o){const t=i.getIntersection(o);u=t?t.getIntersectionArea(h):0}else u=i.getIntersectionArea(h);function g(){c=f,a=u,r=h,s=d}return o&&(f=o.getIntersectionArea(h)),o&&!i?f>c&&g():!o&&i?u>a&&g():f>c&&u>=a?g():f>=c&&u>a&&g(),u===l}),r?[s,r]:null}(n,a,s,t,e)||Zl(n[0],a,s)}else[l,c]=Zl(n[0],a,s);let{left:d,top:h}=Xl(c);if(r){const t=Xl(new xs(r)),e=vs(r);d-=t.left,h-=t.top,d+=r.scrollLeft,h+=r.scrollTop,d-=e.left,h-=e.top}return{left:d,top:h,name:l}}function Zl(t,e,n){const{left:i,top:o,name:r}=t(e,n);return[r,n.clone().moveTo(i,o)]}function Xl({left:t,top:e}){const{scrollX:n,scrollY:i}=tr.window;return{left:t+n,top:e+i}}class td extends Ll{constructor(t,e,n){super(t);const i=this.bindTemplate;this.buttonView=e,this.panelView=n,this.set("isOpen",!1),this.set("isEnabled",!0),this.set("class"),this.set("panelPosition","auto"),this.focusTracker=new al,this.keystrokes=new Zc,this.setTemplate({tag:"div",attributes:{class:["ck","ck-dropdown",i.to("class"),i.if("isEnabled","ck-disabled",t=>!t)]},children:[e,n]}),e.extendTemplate({attributes:{class:["ck-dropdown__button"]}})}render(){super.render(),this.listenTo(this.buttonView,"open",()=>{this.isOpen=!this.isOpen}),this.panelView.bind("isVisible").to(this,"isOpen"),this.on("change:isOpen",()=>{this.isOpen&&("auto"===this.panelPosition?this.panelView.position=td._getOptimalPosition({element:this.panelView.element,target:this.buttonView.element,fitInViewport:!0,positions:this._panelPositions}).name:this.panelView.position=this.panelPosition)}),this.keystrokes.listenTo(this.element),this.focusTracker.add(this.element);const t=(t,e)=>{this.isOpen&&(this.buttonView.focus(),this.isOpen=!1,e())};this.keystrokes.set("arrowdown",(t,e)=>{this.buttonView.isEnabled&&!this.isOpen&&(this.isOpen=!0,e())}),this.keystrokes.set("arrowright",(t,e)=>{this.isOpen&&e()}),this.keystrokes.set("arrowleft",t),this.keystrokes.set("esc",t)}focus(){this.buttonView.focus()}get _panelPositions(){const{southEast:t,southWest:e,northEast:n,northWest:i}=td.defaultPanelPositions;return"ltr"===this.locale.uiLanguageDirection?[t,e,n,i]:[e,t,i,n]}}td.defaultPanelPositions={southEast:t=>({top:t.bottom,left:t.left,name:"se"}),southWest:(t,e)=>({top:t.bottom,left:t.left-e.width+t.width,name:"sw"}),northEast:(t,e)=>({top:t.top-e.height,left:t.left,name:"ne"}),northWest:(t,e)=>({top:t.bottom-e.height,left:t.left-e.width+t.width,name:"nw"})},td._getOptimalPosition=Jl;n(26);class ed extends Ll{constructor(){super();const t=this.bindTemplate;this.set("content",""),this.set("viewBox","0 0 20 20"),this.set("fillColor",""),this.setTemplate({tag:"svg",ns:"http://www.w3.org/2000/svg",attributes:{class:["ck","ck-icon"],viewBox:t.to("viewBox")}})}render(){super.render(),this._updateXMLContent(),this._colorFillPaths(),this.on("change:content",()=>{this._updateXMLContent(),this._colorFillPaths()}),this.on("change:fillColor",()=>{this._colorFillPaths()})}_updateXMLContent(){if(this.content){const t=(new DOMParser).parseFromString(this.content.trim(),"image/svg+xml").querySelector("svg"),e=t.getAttribute("viewBox");for(e&&(this.viewBox=e),this.element.innerHTML="";t.childNodes.length>0;)this.element.appendChild(t.childNodes[0])}}_colorFillPaths(){this.fillColor&&this.element.querySelectorAll(".ck-icon__fill").forEach(t=>{t.style.fill=this.fillColor})}}n(28);class nd extends Ll{constructor(t){super(t),this.set("text",""),this.set("position","s");const e=this.bindTemplate;this.setTemplate({tag:"span",attributes:{class:["ck","ck-tooltip",e.to("position",t=>"ck-tooltip_"+t),e.if("text","ck-hidden",t=>!t.trim())]},children:[{tag:"span",attributes:{class:["ck","ck-tooltip__text"]},children:[{text:e.to("text")}]}]})}}n(30);class id extends Ll{constructor(t){super(t);const e=this.bindTemplate,n=Jn();this.set("class"),this.set("labelStyle"),this.set("icon"),this.set("isEnabled",!0),this.set("isOn",!1),this.set("isVisible",!0),this.set("isToggleable",!1),this.set("keystroke"),this.set("label"),this.set("tabindex",-1),this.set("tooltip"),this.set("tooltipPosition","s"),this.set("type","button"),this.set("withText",!1),this.children=this.createCollection(),this.tooltipView=this._createTooltipView(),this.labelView=this._createLabelView(n),this.iconView=new ed,this.iconView.extendTemplate({attributes:{class:"ck-button__icon"}}),this.bind("_tooltipString").to(this,"tooltip",this,"label",this,"keystroke",this._getTooltipString.bind(this)),this.setTemplate({tag:"button",attributes:{class:["ck","ck-button",e.to("class"),e.if("isEnabled","ck-disabled",t=>!t),e.if("isVisible","ck-hidden",t=>!t),e.to("isOn",t=>t?"ck-on":"ck-off"),e.if("withText","ck-button_with-text")],type:e.to("type",t=>t||"button"),tabindex:e.to("tabindex"),"aria-labelledby":`ck-editor__aria-label_${n}`,"aria-disabled":e.if("isEnabled",!0,t=>!t),"aria-pressed":e.to("isOn",t=>!!this.isToggleable&&String(t))},children:this.children,on:{mousedown:e.to(t=>{t.preventDefault()}),click:e.to(t=>{this.isEnabled?this.fire("execute"):t.preventDefault()})}})}render(){super.render(),this.icon&&(this.iconView.bind("content").to(this,"icon"),this.children.add(this.iconView)),this.children.add(this.tooltipView),this.children.add(this.labelView)}focus(){this.element.focus()}_createTooltipView(){const t=new nd;return t.bind("text").to(this,"_tooltipString"),t.bind("position").to(this,"tooltipPosition"),t}_createLabelView(t){const e=new Ll,n=this.bindTemplate;return e.setTemplate({tag:"span",attributes:{class:["ck","ck-button__label"],style:n.to("labelStyle"),id:`ck-editor__aria-label_${t}`},children:[{text:this.bindTemplate.to("label")}]}),e}_getTooltipString(t,e,n){return t?"string"==typeof t?t:(n&&(n=function(t){return go.isMac?_o(t).map(t=>po[t.toLowerCase()]||t).reduce((t,e)=>t.slice(-1)in mo?t+e:t+"+"+e):t}(n)),t instanceof Function?t(e,n):`${e}${n?` (${n})`:""}`):""}}var od='';class rd extends id{constructor(t){super(t),this.arrowView=this._createArrowView(),this.extendTemplate({attributes:{"aria-haspopup":!0}}),this.delegate("execute").to(this,"open")}render(){super.render(),this.children.add(this.arrowView)}_createArrowView(){const t=new ed;return t.content=od,t.extendTemplate({attributes:{class:"ck-dropdown__arrow"}}),t}}n(32);class sd extends Ll{constructor(){super(),this.items=this.createCollection(),this.focusTracker=new al,this.keystrokes=new Zc,this._focusCycler=new Wl({focusables:this.items,focusTracker:this.focusTracker,keystrokeHandler:this.keystrokes,actions:{focusPrevious:"arrowup",focusNext:"arrowdown"}}),this.setTemplate({tag:"ul",attributes:{class:["ck","ck-reset","ck-list"]},children:this.items})}render(){super.render();for(const t of this.items)this.focusTracker.add(t.element);this.items.on("add",(t,e)=>{this.focusTracker.add(e.element)}),this.items.on("remove",(t,e)=>{this.focusTracker.remove(e.element)}),this.keystrokes.listenTo(this.element)}focus(){this._focusCycler.focusFirst()}focusLast(){this._focusCycler.focusLast()}}class ad extends Ll{constructor(t){super(t),this.children=this.createCollection(),this.setTemplate({tag:"li",attributes:{class:["ck","ck-list__item"]},children:this.children})}focus(){this.children.first.focus()}}class cd extends Ll{constructor(t){super(t),this.setTemplate({tag:"li",attributes:{class:["ck","ck-list__separator"]}})}}n(34);class ld extends id{constructor(t){super(t),this.isToggleable=!0,this.toggleSwitchView=this._createToggleView(),this.extendTemplate({attributes:{class:"ck-switchbutton"}})}render(){super.render(),this.children.add(this.toggleSwitchView)}_createToggleView(){const t=new Ll;return t.setTemplate({tag:"span",attributes:{class:["ck","ck-button__toggle"]},children:[{tag:"span",attributes:{class:["ck","ck-button__toggle__inner"]}}]}),t}}function dd({emitter:t,activator:e,callback:n,contextElements:i}){t.listenTo(document,"mousedown",(t,{target:o})=>{if(e()){for(const t of i)if(t.contains(o))return;n()}})}n(36),n(38);function hd(t,e=rd){const n=new e(t),i=new Kl(t),o=new td(t,n,i);return n.bind("isEnabled").to(o),n instanceof rd?n.bind("isOn").to(o,"isOpen"):n.arrowView.bind("isOn").to(o,"isOpen"),function(t){(function(t){t.on("render",()=>{dd({emitter:t,activator:()=>t.isOpen,callback:()=>{t.isOpen=!1},contextElements:[t.element]})})})(t),function(t){t.on("execute",e=>{e.source instanceof ld||(t.isOpen=!1)})}(t),function(t){t.keystrokes.set("arrowdown",(e,n)=>{t.isOpen&&(t.panelView.focus(),n())}),t.keystrokes.set("arrowup",(e,n)=>{t.isOpen&&(t.panelView.focusLast(),n())})}(t)}(o),o}function ud(t,e){const n=t.locale,i=t.listView=new sd(n);i.items.bindTo(e).using(({type:t,model:e})=>{if("separator"===t)return new cd(n);if("button"===t||"switchbutton"===t){const i=new ad(n);let o;return(o="button"===t?new id(n):new ld(n)).bind(...Object.keys(e)).to(e),o.delegate("execute").to(i),i.children.add(o),i}}),t.panelView.children.add(i),i.items.delegate("execute").to(t)}var fd='\n';n(40);class gd extends Ll{constructor(t,e){super(t);const n=this.bindTemplate,i=this.t;this.options=e||{},this.set("ariaLabel",i("bo")),this.items=this.createCollection(),this.focusTracker=new al,this.keystrokes=new Zc,this.set("class"),this.itemsView=new md(t),this.children=this.createCollection(),this.children.add(this.itemsView),this.focusables=this.createCollection(),this._focusCycler=new Wl({focusables:this.focusables,focusTracker:this.focusTracker,keystrokeHandler:this.keystrokes,actions:{focusPrevious:["arrowleft","arrowup"],focusNext:["arrowright","arrowdown"]}}),this.setTemplate({tag:"div",attributes:{class:["ck","ck-toolbar",n.to("class")],role:"toolbar","aria-label":n.to("ariaLabel")},children:this.children,on:{mousedown:function(t){return t.bindTemplate.to(e=>{e.target===t.element&&e.preventDefault()})}(this)}}),this._behavior=this.options.shouldGroupWhenFull?new bd(this):new pd(this)}render(){super.render();for(const t of this.items)this.focusTracker.add(t.element);this.items.on("add",(t,e)=>{this.focusTracker.add(e.element)}),this.items.on("remove",(t,e)=>{this.focusTracker.remove(e.element)}),this.keystrokes.listenTo(this.element),this._behavior.render(this)}destroy(){return this._behavior.destroy(),super.destroy()}focus(){this._focusCycler.focusFirst()}focusLast(){this._focusCycler.focusLast()}fillFromConfig(t,e){t.map(t=>{"|"==t?this.items.add(new $l):e.has(t)?this.items.add(e.create(t)):console.warn(Object(Gn.a)("toolbarview-item-unavailable: The requested toolbar item is unavailable."),{name:t})})}}class md extends Ll{constructor(t){super(t),this.children=this.createCollection(),this.setTemplate({tag:"div",attributes:{class:["ck","ck-toolbar__items"]},children:this.children})}}class pd{constructor(t){const e=t.bindTemplate;t.set("isVertical",!1),t.itemsView.children.bindTo(t.items).using(t=>t),t.focusables.bindTo(t.items).using(t=>t),t.extendTemplate({attributes:{class:[e.if("isVertical","ck-toolbar_vertical")]}})}render(){}destroy(){}}class bd{constructor(t){this.viewChildren=t.children,this.viewFocusables=t.focusables,this.viewItemsView=t.itemsView,this.viewFocusTracker=t.focusTracker,this.viewLocale=t.locale,this.ungroupedItems=t.createCollection(),this.groupedItems=t.createCollection(),this.groupedItemsDropdown=this._createGroupedItemsDropdown(),this.resizeObserver=null,this.cachedPadding=null,t.itemsView.children.bindTo(this.ungroupedItems).using(t=>t),this.ungroupedItems.on("add",this._updateFocusCycleableItems.bind(this)),this.ungroupedItems.on("remove",this._updateFocusCycleableItems.bind(this)),t.children.on("add",this._updateFocusCycleableItems.bind(this)),t.children.on("remove",this._updateFocusCycleableItems.bind(this)),t.items.on("add",(t,e,n)=>{n>this.ungroupedItems.length?this.groupedItems.add(e,n-this.ungroupedItems.length):this.ungroupedItems.add(e,n),this._updateGrouping()}),t.items.on("remove",(t,e,n)=>{n>this.ungroupedItems.length?this.groupedItems.remove(e):this.ungroupedItems.remove(e),this._updateGrouping()}),t.extendTemplate({attributes:{class:["ck-toolbar_grouping"]}})}render(t){this.viewElement=t.element,this._enableGroupingOnResize()}destroy(){this.groupedItemsDropdown.destroy(),this.resizeObserver.disconnect()}_updateGrouping(){if(!this.viewElement.ownerDocument.body.contains(this.viewElement))return;let t;for(;this._areItemsOverflowing;)this._groupLastItem(),t=!0;if(!t&&this.groupedItems.length){for(;this.groupedItems.length&&!this._areItemsOverflowing;)this._ungroupFirstItem();this._areItemsOverflowing&&this._groupLastItem()}}get _areItemsOverflowing(){if(!this.ungroupedItems.length)return!1;const t=this.viewElement,e=this.viewLocale.uiLanguageDirection,n=new xs(t.lastChild),i=new xs(t);if(!this.cachedPadding){const n=tr.window.getComputedStyle(t),i="ltr"===e?"paddingRight":"paddingLeft";this.cachedPadding=Number.parseInt(n[i])}return"ltr"===e?n.right>i.right-this.cachedPadding:n.left{t&&t===e.contentRect.width||(this._updateGrouping(),t=e.contentRect.width)}),this.resizeObserver.observe(this.viewElement),this._updateGrouping()}_groupLastItem(){this.groupedItems.length||(this.viewChildren.add(new $l),this.viewChildren.add(this.groupedItemsDropdown),this.viewFocusTracker.add(this.groupedItemsDropdown.element)),this.groupedItems.add(this.ungroupedItems.remove(this.ungroupedItems.last),0)}_ungroupFirstItem(){this.ungroupedItems.add(this.groupedItems.remove(this.groupedItems.first)),this.groupedItems.length||(this.viewChildren.remove(this.groupedItemsDropdown),this.viewChildren.remove(this.viewChildren.last),this.viewFocusTracker.remove(this.groupedItemsDropdown.element))}_createGroupedItemsDropdown(){const t=this.viewLocale,e=t.t,n=hd(t);return n.class="ck-toolbar__grouped-dropdown",n.panelPosition="ltr"===t.uiLanguageDirection?"sw":"se",function(t,e){const n=t.locale,i=n.t,o=t.toolbarView=new gd(n);o.set("ariaLabel",i("bq")),t.extendTemplate({attributes:{class:["ck-toolbar-dropdown"]}}),e.map(t=>o.items.add(t)),t.panelView.children.add(o),o.items.delegate("execute").to(t)}(n,[]),n.buttonView.set({label:e("bp"),tooltip:!0,icon:fd}),n.toolbarView.items.bindTo(this.groupedItems).using(t=>t),n}_updateFocusCycleableItems(){this.viewFocusables.clear(),this.ungroupedItems.map(t=>{this.viewFocusables.add(t)}),this.groupedItems.length&&this.viewFocusables.add(this.groupedItemsDropdown)}}n(42);class wd extends zl{constructor(t,e){super(t),this.stickyPanel=new ql(t),this.toolbar=new gd(t,{shouldGroupWhenFull:!0}),this.editable=new Fl(t,e)}render(){super.render(),this.stickyPanel.content.add(this.toolbar),this.top.add(this.stickyPanel),this.main.add(this.editable)}}class kd extends tl{constructor(t,e){super(e),Wn(t)&&(this.sourceElement=t),this.data.processor=new ol,this.model.document.createRoot(),this.ui=new ml(this,new wd(this.locale,this.editing.view)),function(t){if(!W(t.updateSourceElement))throw new Gn.b("attachtoform-missing-elementapi-interface: Editor passed to attachToForm() must implement ElementApi.",t);const e=t.sourceElement;if(e&&"textarea"===e.tagName.toLowerCase()&&e.form){let n;const i=e.form,o=()=>t.updateSourceElement();W(i.submit)&&(n=i.submit,i.submit=(()=>{o(),n.apply(i)})),i.addEventListener("submit",o),t.on("destroy",()=>{i.removeEventListener("submit",o),n&&(i.submit=n)})}}(this)}destroy(){return this.sourceElement&&this.updateSourceElement(),this.ui.destroy(),super.destroy()}static create(t,e={}){return new Promise(n=>{const i=new this(t,e);n(i.initPlugins().then(()=>i.ui.init(Wn(t)?t:null)).then(()=>{if(!Wn(t)&&e.initialData)throw new Gn.b("editor-create-initial-data: The config.initialData option cannot be used together with initial data passed in Editor.create().",null);const n=e.initialData||function(t){return Wn(t)?function(t){return t instanceof HTMLTextAreaElement?t.value:t.innerHTML}(t):t}(t);return i.data.init(n)}).then(()=>i.fire("ready")).then(()=>i))})}}ci(kd,el),ci(kd,nl);class _d{constructor(t){this.editor=t}destroy(){this.stopListening()}}ci(_d,Fi);class vd{constructor(t){this.files=function(t){const e=t.files?Array.from(t.files):[],n=t.items?Array.from(t.items):[];if(e.length)return e;return n.filter(t=>"file"===t.kind).map(t=>t.getAsFile())}(t),this._native=t}get types(){return this._native.types}getData(t){return this._native.getData(t)}setData(t,e){this._native.setData(t,e)}}class yd extends Xr{constructor(t){super(t);const e=this.document;function n(t,n){n.preventDefault();const i=n.dropRange?[n.dropRange]:Array.from(e.selection.getRanges()),o=new Kn(e,"clipboardInput");e.fire(o,{dataTransfer:n.dataTransfer,targetRanges:i}),o.stop.called&&n.stopPropagation()}this.domEventType=["paste","copy","cut","drop","dragover"],this.listenTo(e,"paste",n,{priority:"low"}),this.listenTo(e,"drop",n,{priority:"low"})}onDomEvent(t){const e={dataTransfer:new vd(t.clipboardData?t.clipboardData:t.dataTransfer)};"drop"==t.type&&(e.dropRange=function(t,e){const n=e.target.ownerDocument,i=e.clientX,o=e.clientY;let r;n.caretRangeFromPoint&&n.caretRangeFromPoint(i,o)?r=n.caretRangeFromPoint(i,o):e.rangeParent&&((r=n.createRange()).setStart(e.rangeParent,e.rangeOffset),r.collapse(!0));return r?t.domConverter.domRangeToView(r):t.document.selection.getFirstRange()}(this.view,t)),this.fire(t.type,t,e)}}const xd=["figcaption","li"];class Ad extends _d{static get pluginName(){return"Clipboard"}init(){const t=this.editor,e=t.model.document,n=t.editing.view,i=n.document;function o(n,o){const r=o.dataTransfer;o.preventDefault();const s=t.data.toView(t.model.getSelectedContent(e.selection));i.fire("clipboardOutput",{dataTransfer:r,content:s,method:n.name})}this._htmlDataProcessor=new ol,n.addObserver(yd),this.listenTo(i,"clipboardInput",e=>{t.isReadOnly&&e.stop()},{priority:"highest"}),this.listenTo(i,"clipboardInput",(t,e)=>{const i=e.dataTransfer;let o="";i.getData("text/html")?o=function(t){return t.replace(/(\s+)<\/span>/g,(t,e)=>1==e.length?" ":e)}(i.getData("text/html")):i.getData("text/plain")&&(o=function(t){return(t=t.replace(//g,">").replace(/\n/g,"

").replace(/^\s/," ").replace(/\s$/," ").replace(/\s\s/g,"  ")).indexOf("

")>-1&&(t=`

${t}

`),t}(i.getData("text/plain"))),o=this._htmlDataProcessor.toView(o),this.fire("inputTransformation",{content:o,dataTransfer:i}),n.scrollToTheSelection()},{priority:"low"}),this.listenTo(this,"inputTransformation",(t,e)=>{if(!e.content.isEmpty){const t=this.editor.data,n=this.editor.model,i=t.toModel(e.content,"$clipboardHolder");if(0==i.childCount)return;n.insertContent(i)}},{priority:"low"}),this.listenTo(i,"copy",o,{priority:"low"}),this.listenTo(i,"cut",(e,n)=>{t.isReadOnly?n.preventDefault():o(e,n)},{priority:"low"}),this.listenTo(i,"clipboardOutput",(n,i)=>{i.content.isEmpty||(i.dataTransfer.setData("text/html",this._htmlDataProcessor.toData(i.content)),i.dataTransfer.setData("text/plain",function t(e){let n="";if(e.is("text")||e.is("textProxy"))n=e.data;else if(e.is("img")&&e.hasAttribute("alt"))n=e.getAttribute("alt");else{let i=null;for(const o of e.getChildren()){const e=t(o);i&&(i.is("containerElement")||o.is("containerElement"))&&(xd.includes(i.name)||xd.includes(o.name)?n+="\n":n+="\n\n"),n+=e,i=o}}return n}(i.content))),"cut"==i.method&&t.model.deleteContent(e.selection)},{priority:"low"})}}class Td{constructor(t){this.editor=t,this.set("value",void 0),this.set("isEnabled",!1),this._disableStack=new Set,this.decorate("execute"),this.listenTo(this.editor.model.document,"change",()=>{this.refresh()}),this.on("execute",t=>{this.isEnabled||t.stop()},{priority:"high"}),this.listenTo(t,"change:isReadOnly",(t,e,n)=>{n?this.forceDisabled("readOnlyMode"):this.clearForceDisabled("readOnlyMode")})}refresh(){this.isEnabled=!0}forceDisabled(t){this._disableStack.add(t),1==this._disableStack.size&&(this.on("set:isEnabled",Cd,{priority:"highest"}),this.isEnabled=!1)}clearForceDisabled(t){this._disableStack.delete(t),0==this._disableStack.size&&(this.off("set:isEnabled",Cd),this.refresh())}execute(){}destroy(){this.stopListening()}}function Cd(t){t.return=!1,t.stop()}function*Pd(t,e){for(const n of e)n&&t.getAttributeProperties(n[0]).copyOnEnter&&(yield n)}ci(Td,Fi);class Sd extends Td{execute(){const t=this.editor.model,e=t.document;t.change(n=>{!function(t,e,n,i){const o=n.isCollapsed,r=n.getFirstRange(),s=r.start.parent,a=r.end.parent;if(i.isLimit(s)||i.isLimit(a))return void(o||s!=a||t.deleteContent(n));if(o){const t=Pd(e.model.schema,n.getAttributes());Md(e,r.start),e.setSelectionAttribute(t)}else{const i=!(r.start.isAtStart&&r.end.isAtEnd),o=s==a;t.deleteContent(n,{leaveUnmerged:i}),i&&(o?Md(e,n.focus):e.setSelection(a,0))}}(this.editor.model,n,e.selection,t.schema),this.fire("afterExecute",{writer:n})})}}function Md(t,e){t.split(e),t.setSelection(e.parent.nextSibling,0)}class Ed extends hr{constructor(t){super(t);const e=this.document;e.on("keydown",(t,n)=>{if(this.isEnabled&&n.keyCode==bo.enter){let i;e.once("enter",t=>i=t,{priority:"highest"}),e.fire("enter",new Zr(e,n.domEvent,{isSoft:n.shiftKey})),i&&i.stop.called&&t.stop()}})}observe(){}}class Id extends _d{static get pluginName(){return"Enter"}init(){const t=this.editor,e=t.editing.view,n=e.document;e.addObserver(Ed),t.commands.add("enter",new Sd(t)),this.listenTo(n,"enter",(n,i)=>{i.preventDefault(),i.isSoft||(t.execute("enter"),e.scrollToTheSelection())},{priority:"low"})}}class Nd extends Td{execute(){const t=this.editor.model,e=t.document;t.change(n=>{!function(t,e,n){const i=n.isCollapsed,o=n.getFirstRange(),r=o.start.parent,s=o.end.parent,a=r==s;if(i){const i=Pd(t.schema,n.getAttributes());Od(e,o.end),e.removeSelectionAttribute(n.getAttributeKeys()),e.setSelectionAttribute(i)}else{const i=!(o.start.isAtStart&&o.end.isAtEnd);t.deleteContent(n,{leaveUnmerged:i}),a?Od(e,n.focus):i&&e.setSelection(s,0)}}(t,n,e.selection),this.fire("afterExecute",{writer:n})})}refresh(){const t=this.editor.model,e=t.document;this.isEnabled=function(t,e){if(e.rangeCount>1)return!1;const n=e.anchor;if(!n||!t.checkChild(n,"softBreak"))return!1;const i=e.getFirstRange(),o=i.start.parent,r=i.end.parent;if((Rd(o,t)||Rd(r,t))&&o!==r)return!1;return!0}(t.schema,e.selection)}}function Od(t,e){const n=t.createElement("softBreak");t.insert(n,e),t.setSelection(n,"after")}function Rd(t,e){return!t.is("rootElement")&&(e.isLimit(t)||Rd(t.parent,e))}class Dd extends _d{static get pluginName(){return"ShiftEnter"}init(){const t=this.editor,e=t.model.schema,n=t.conversion,i=t.editing.view,o=i.document;e.register("softBreak",{allowWhere:"$text",isInline:!0}),n.for("upcast").elementToElement({model:"softBreak",view:"br"}),n.for("downcast").elementToElement({model:"softBreak",view:(t,e)=>e.createEmptyElement("br")}),i.addObserver(Ed),t.commands.add("shiftEnter",new Nd(t)),this.listenTo(o,"enter",(e,n)=>{n.preventDefault(),n.isSoft&&(t.execute("shiftEnter"),i.scrollToTheSelection())},{priority:"low"})}}class Ld{constructor(t,e=20){this.model=t,this.size=0,this.limit=e,this.isLocked=!1,this._changeCallback=((t,e)=>{"transparent"!=e.type&&e!==this._batch&&this._reset(!0)}),this._selectionChangeCallback=(()=>{this._reset()}),this.model.document.on("change",this._changeCallback),this.model.document.selection.on("change:range",this._selectionChangeCallback),this.model.document.selection.on("change:attribute",this._selectionChangeCallback)}get batch(){return this._batch||(this._batch=this.model.createBatch()),this._batch}input(t){this.size+=t,this.size>=this.limit&&this._reset(!0)}lock(){this.isLocked=!0}unlock(){this.isLocked=!1}destroy(){this.model.document.off("change",this._changeCallback),this.model.document.selection.off("change:range",this._selectionChangeCallback),this.model.document.selection.off("change:attribute",this._selectionChangeCallback)}_reset(t){this.isLocked&&!t||(this._batch=null,this.size=0)}}class jd extends Td{constructor(t,e){super(t),this._buffer=new Ld(t.model,e),this._batches=new WeakSet}get buffer(){return this._buffer}destroy(){super.destroy(),this._buffer.destroy()}execute(t={}){const e=this.editor.model,n=e.document,i=t.text||"",o=i.length,r=t.range||n.selection.getFirstRange(),s=t.resultRange;e.enqueueChange(this._buffer.batch,t=>{const a=r.isCollapsed;this._buffer.lock(),e.deleteContent(e.createSelection(r)),i&&e.insertContent(t.createText(i,n.selection.getAttributes()),r.start),s?t.setSelection(s):a&&t.setSelection(r.start.getShiftedBy(o)),this._buffer.unlock(),this._buffer.input(o),this._batches.add(this._buffer.batch)})}}function Vd(t){let e=null;const n=t.model,i=t.editing.view,o=t.commands.get("input");function r(t){const r=n.document,a=i.document.isComposing,c=e&&e.isEqual(r.selection);e=null,o.isEnabled&&(function(t){if(t.ctrlKey)return!0;return zd.includes(t.keyCode)}(t)||r.selection.isCollapsed||a&&229===t.keyCode||!a&&229===t.keyCode&&c||s())}function s(){const t=o.buffer;t.lock(),n.enqueueChange(t.batch,()=>{n.deleteContent(n.document.selection)}),t.unlock()}go.isAndroid?i.document.on("beforeinput",(t,e)=>r(e),{priority:"lowest"}):i.document.on("keydown",(t,e)=>r(e),{priority:"lowest"}),i.document.on("compositionstart",function(){const t=n.document,e=1!==t.selection.rangeCount||t.selection.getFirstRange().isFlat;if(t.selection.isCollapsed||e)return;s()},{priority:"lowest"}),i.document.on("compositionend",()=>{e=n.createSelection(n.document.selection)},{priority:"lowest"})}const zd=[wo("arrowUp"),wo("arrowRight"),wo("arrowDown"),wo("arrowLeft"),9,16,17,18,19,20,27,33,34,35,36,45,91,93,144,145,173,174,175,176,177,178,179,255];for(let t=112;t<=135;t++)zd.push(t);function Bd(t){if(t.newChildren.length-t.oldChildren.length!=1)return;const e=function(t,e){const n=[];let i,o=0;return t.forEach(t=>{"equal"==t?(r(),o++):"insert"==t?(s("insert")?i.values.push(e[o]):(r(),i={type:"insert",index:o,values:[e[o]]}),o++):s("delete")?i.howMany++:(r(),i={type:"delete",index:o,howMany:1})}),r(),n;function r(){i&&(n.push(i),i=null)}function s(t){return i&&i.type==t}}($o(t.oldChildren,t.newChildren,Fd),t.newChildren);if(e.length>1)return;const n=e[0];return n.values[0]&&n.values[0].is("text")?n:void 0}function Fd(t,e){return t&&t.is("text")&&e&&e.is("text")?t.data===e.data:t===e}class Ud{constructor(t){this.editor=t,this.editing=this.editor.editing}handle(t,e){if(function(t){if(0==t.length)return!1;for(const e of t)if("children"===e.type&&!Bd(e))return!0;return!1}(t))this._handleContainerChildrenMutations(t,e);else for(const n of t)this._handleTextMutation(n,e),this._handleTextNodeInsertion(n)}_handleContainerChildrenMutations(t,e){const n=function(t){const e=t.map(t=>t.node).reduce((t,e)=>t.getCommonAncestor(e,{includeSelf:!0}));if(!e)return;return e.getAncestors({includeSelf:!0,parentFirst:!0}).find(t=>t.is("containerElement")||t.is("rootElement"))}(t);if(!n)return;const i=this.editor.editing.view.domConverter.mapViewToDom(n),o=new or,r=this.editor.data.toModel(o.domToView(i)).getChild(0),s=this.editor.editing.mapper.toModelElement(n);if(!s)return;const a=Array.from(r.getChildren()),c=Array.from(s.getChildren()),l=a[a.length-1],d=c[c.length-1];l&&l.is("softBreak")&&d&&!d.is("softBreak")&&a.pop();const h=this.editor.model.schema;if(!Hd(a,h)||!Hd(c,h))return;const u=a.map(t=>t.is("text")?t.data:"@").join("").replace(/\u00A0/g," "),f=c.map(t=>t.is("text")?t.data:"@").join("").replace(/\u00A0/g," ");if(f===u)return;const g=$o(f,u),{firstChangeAt:m,insertions:p,deletions:b}=qd(g);let w=null;e&&(w=this.editing.mapper.toModelRange(e.getFirstRange()));const k=u.substr(m,p),_=this.editor.model.createRange(this.editor.model.createPositionAt(s,m),this.editor.model.createPositionAt(s,m+b));this.editor.execute("input",{text:k,range:_,resultRange:w})}_handleTextMutation(t,e){if("text"!=t.type)return;const n=t.newText.replace(/\u00A0/g," "),i=t.oldText.replace(/\u00A0/g," ");if(i===n)return;const o=$o(i,n),{firstChangeAt:r,insertions:s,deletions:a}=qd(o);let c=null;e&&(c=this.editing.mapper.toModelRange(e.getFirstRange()));const l=this.editing.view.createPositionAt(t.node,r),d=this.editing.mapper.toModelPosition(l),h=this.editor.model.createRange(d,d.getShiftedBy(a)),u=n.substr(r,s);this.editor.execute("input",{text:u,range:h,resultRange:c})}_handleTextNodeInsertion(t){if("children"!=t.type)return;const e=Bd(t),n=this.editing.view.createPositionAt(t.node,e.index),i=this.editing.mapper.toModelPosition(n),o=e.values[0].data;this.editor.execute("input",{text:o.replace(/\u00A0/g," "),range:this.editor.model.createRange(i)})}}function Hd(t,e){return t.every(t=>e.isInline(t))}function qd(t){let e=null,n=null;for(let i=0;i{new Ud(t).handle(n,i)})}(t)}isInput(t){return this.editor.commands.get("input")._batches.has(t)}}class Yd extends Td{constructor(t,e){super(t),this.direction=e,this._buffer=new Ld(t.model,t.config.get("typing.undoStep"))}get buffer(){return this._buffer}execute(t={}){const e=this.editor.model,n=e.document;e.enqueueChange(this._buffer.batch,i=>{this._buffer.lock();const o=i.createSelection(t.selection||n.selection),r=o.isCollapsed;if(o.isCollapsed&&e.modifySelection(o,{direction:this.direction,unit:t.unit}),this._shouldEntireContentBeReplacedWithParagraph(t.sequence||1))return void this._replaceEntireContentWithParagraph(i);if(o.isCollapsed)return;let s=0;o.getFirstRange().getMinimalFlatRanges().forEach(t=>{s+=eo(t.getWalker({singleCharacters:!0,ignoreElementEnd:!0,shallow:!0}))}),e.deleteContent(o,{doNotResetEntireContent:r}),this._buffer.input(s),i.setSelection(o),this._buffer.unlock()})}_shouldEntireContentBeReplacedWithParagraph(t){if(t>1)return!1;const e=this.editor.model,n=e.document.selection,i=e.schema.getLimitElement(n);if(!(n.isCollapsed&&n.containsEntireContent(i)))return!1;if(!e.schema.checkChild(i,"paragraph"))return!1;const o=i.getChild(0);return!o||"paragraph"!==o.name}_replaceEntireContentWithParagraph(t){const e=this.editor.model,n=e.document.selection,i=e.schema.getLimitElement(n),o=t.createElement("paragraph");t.remove(t.createRangeIn(i)),t.insert(o,i),t.setSelection(o,0)}}class $d extends hr{constructor(t){super(t);const e=t.document;let n=0;function i(t,n,i){let o;e.once("delete",t=>o=t,{priority:Number.POSITIVE_INFINITY}),e.fire("delete",new Zr(e,n,i)),o&&o.stop.called&&t.stop()}e.on("keyup",(t,e)=>{e.keyCode!=bo.delete&&e.keyCode!=bo.backspace||(n=0)}),e.on("keydown",(t,e)=>{const o={};if(e.keyCode==bo.delete)o.direction="forward",o.unit="character";else{if(e.keyCode!=bo.backspace)return;o.direction="backward",o.unit="codePoint"}const r=go.isMac?e.altKey:e.ctrlKey;o.unit=r?"word":o.unit,o.sequence=++n,i(t,e.domEvent,o)}),go.isAndroid&&e.on("beforeinput",(e,n)=>{if("deleteContentBackward"!=n.domEvent.inputType)return;const o={unit:"codepoint",direction:"backward",sequence:1},r=n.domTarget.ownerDocument.defaultView.getSelection();r.anchorNode==r.focusNode&&r.anchorOffset+1!=r.focusOffset&&(o.selectionToRemove=t.domConverter.domSelectionToView(r)),i(e,n.domEvent,o)})}observe(){}}class Gd extends _d{static get pluginName(){return"Delete"}init(){const t=this.editor,e=t.editing.view,n=e.document;if(e.addObserver($d),t.commands.add("forwardDelete",new Yd(t,"forward")),t.commands.add("delete",new Yd(t,"backward")),this.listenTo(n,"delete",(n,i)=>{const o={unit:i.unit,sequence:i.sequence};if(i.selectionToRemove){const e=t.model.createSelection(),n=[];for(const e of i.selectionToRemove.getRanges())n.push(t.editing.mapper.toModelRange(e));e.setTo(n),o.selection=e}t.execute("forward"==i.direction?"forwardDelete":"delete",o),i.preventDefault(),e.scrollToTheSelection()}),go.isAndroid){let t=null;this.listenTo(n,"delete",(e,n)=>{const i=n.domTarget.ownerDocument.defaultView.getSelection();t={anchorNode:i.anchorNode,anchorOffset:i.anchorOffset,focusNode:i.focusNode,focusOffset:i.focusOffset}},{priority:"lowest"}),this.listenTo(n,"keyup",(e,n)=>{if(t){const e=n.domTarget.ownerDocument.defaultView.getSelection();e.collapse(t.anchorNode,t.anchorOffset),e.extend(t.focusNode,t.focusOffset),t=null}})}}}class Qd extends _d{static get requires(){return[Wd,Gd]}static get pluginName(){return"Typing"}}class Kd extends Za{get type(){return"noop"}clone(){return new Kd(this.baseVersion)}getReversed(){return new Kd(this.baseVersion+1)}_execute(){}static get className(){return"NoOperation"}}const Jd=new Map;function Zd(t,e,n){let i=Jd.get(t);i||(i=new Map,Jd.set(t,i)),i.set(e,n)}function Xd(t){return[t]}function th(t,e,n={}){const i=function(t,e){const n=Jd.get(t);return n&&n.has(e)?n.get(e):Xd}(t.constructor,e.constructor);try{return i(t=t.clone(),e,n)}catch(t){throw t}}function eh(t,e,n){t=t.slice(),e=e.slice();const i=new nh(n.document,n.useRelations,n.forceWeakRemove);i.setOriginalOperations(t),i.setOriginalOperations(e);const o=i.originalOperations;if(0==t.length||0==e.length)return{operationsA:t,operationsB:e,originalOperations:o};const r=new WeakMap;for(const e of t)r.set(e,0);const s={nextBaseVersionA:t[t.length-1].baseVersion+1,nextBaseVersionB:e[e.length-1].baseVersion+1,originalOperationsACount:t.length,originalOperationsBCount:e.length};let a=0;for(;a{if(t.key===e.key){const i=t.range.getDifference(e.range).map(e=>new cc(e,t.key,t.oldValue,t.newValue,0)),o=t.range.getIntersection(e.range);return o&&n.aIsStrong&&i.push(new cc(o,e.key,e.newValue,t.newValue,0)),0==i.length?[new Kd(0)]:i}return[t]}),Zd(cc,hc,(t,e)=>{if(t.range.start.hasSameParentAs(e.position)&&t.range.containsPosition(e.position)){const n=t.range._getTransformedByInsertion(e.position,e.howMany,!e.shouldReceiveAttributes).map(e=>new cc(e,t.key,t.oldValue,t.newValue,t.baseVersion));if(e.shouldReceiveAttributes){const i=rh(e,t.key,t.oldValue);i&&n.unshift(i)}return n}return t.range=t.range._getTransformedByInsertion(e.position,e.howMany,!1)[0],[t]}),Zd(cc,mc,(t,e)=>{const n=[];t.range.start.hasSameParentAs(e.deletionPosition)&&(t.range.containsPosition(e.deletionPosition)||t.range.start.isEqual(e.deletionPosition))&&n.push($s._createFromPositionAndShift(e.graveyardPosition,1));const i=t.range._getTransformedByMergeOperation(e);return i.isCollapsed||n.push(i),n.map(e=>new cc(e,t.key,t.oldValue,t.newValue,t.baseVersion))}),Zd(cc,dc,(t,e)=>{return function(t,e){const n=$s._createFromPositionAndShift(e.sourcePosition,e.howMany);let i=null,o=[];n.containsRange(t,!0)?i=t:t.start.hasSameParentAs(n.start)?(o=t.getDifference(n),i=t.getIntersection(n)):o=[t];const r=[];for(let t of o){t=t._getTransformedByDeletion(e.sourcePosition,e.howMany);const n=e.getMovedRangeStart(),i=t.start.hasSameParentAs(n);t=t._getTransformedByInsertion(n,e.howMany,i),r.push(...t)}i&&r.push(i._getTransformedByMove(e.sourcePosition,e.targetPosition,e.howMany,!1)[0]);return r}(t.range,e).map(e=>new cc(e,t.key,t.oldValue,t.newValue,t.baseVersion))}),Zd(cc,pc,(t,e)=>{if(t.range.end.isEqual(e.insertionPosition))return e.graveyardPosition||t.range.end.offset++,[t];if(t.range.start.hasSameParentAs(e.splitPosition)&&t.range.containsPosition(e.splitPosition)){const n=t.clone();return n.range=new $s(e.moveTargetPosition.clone(),t.range.end._getCombined(e.splitPosition,e.moveTargetPosition)),t.range.end=e.splitPosition.clone(),t.range.end.stickiness="toPrevious",[t,n]}return t.range=t.range._getTransformedBySplitOperation(e),[t]}),Zd(hc,cc,(t,e)=>{const n=[t];if(t.shouldReceiveAttributes&&t.position.hasSameParentAs(e.range.start)&&e.range.containsPosition(t.position)){const i=rh(t,e.key,e.newValue);i&&n.push(i)}return n}),Zd(hc,hc,(t,e,n)=>t.position.isEqual(e.position)&&n.aIsStrong?[t]:(t.position=t.position._getTransformedByInsertOperation(e),[t])),Zd(hc,dc,(t,e)=>(t.position=t.position._getTransformedByMoveOperation(e),[t])),Zd(hc,pc,(t,e)=>(t.position=t.position._getTransformedBySplitOperation(e),[t])),Zd(hc,mc,(t,e)=>(t.position=t.position._getTransformedByMergeOperation(e),[t])),Zd(uc,hc,(t,e)=>(t.oldRange&&(t.oldRange=t.oldRange._getTransformedByInsertOperation(e)[0]),t.newRange&&(t.newRange=t.newRange._getTransformedByInsertOperation(e)[0]),[t])),Zd(uc,uc,(t,e,n)=>{if(t.name==e.name){if(!n.aIsStrong)return[new Kd(0)];t.oldRange=e.newRange?e.newRange.clone():null}return[t]}),Zd(uc,mc,(t,e)=>(t.oldRange&&(t.oldRange=t.oldRange._getTransformedByMergeOperation(e)),t.newRange&&(t.newRange=t.newRange._getTransformedByMergeOperation(e)),[t])),Zd(uc,dc,(t,e,n)=>{if(t.oldRange&&(t.oldRange=$s._createFromRanges(t.oldRange._getTransformedByMoveOperation(e))),t.newRange){if(n.abRelation){const i=$s._createFromRanges(t.newRange._getTransformedByMoveOperation(e));if("left"==n.abRelation.side&&e.targetPosition.isEqual(t.newRange.start))return t.newRange.start.path=n.abRelation.path,t.newRange.end=i.end,[t];if("right"==n.abRelation.side&&e.targetPosition.isEqual(t.newRange.end))return t.newRange.start=i.start,t.newRange.end.path=n.abRelation.path,[t]}t.newRange=$s._createFromRanges(t.newRange._getTransformedByMoveOperation(e))}return[t]}),Zd(uc,pc,(t,e,n)=>{if(t.oldRange&&(t.oldRange=t.oldRange._getTransformedBySplitOperation(e)),t.newRange){if(n.abRelation){const i=t.newRange._getTransformedBySplitOperation(e);return t.newRange.start.isEqual(e.splitPosition)&&n.abRelation.wasStartBeforeMergedElement?t.newRange.start=Ys._createAt(e.insertionPosition):t.newRange.start.isEqual(e.splitPosition)&&!n.abRelation.wasInLeftElement&&(t.newRange.start=Ys._createAt(e.moveTargetPosition)),t.newRange.end.isEqual(e.splitPosition)&&n.abRelation.wasInRightElement?t.newRange.end=Ys._createAt(e.moveTargetPosition):t.newRange.end.isEqual(e.splitPosition)&&n.abRelation.wasEndBeforeMergedElement?t.newRange.end=Ys._createAt(e.insertionPosition):t.newRange.end=i.end,[t]}t.newRange=t.newRange._getTransformedBySplitOperation(e)}return[t]}),Zd(mc,hc,(t,e)=>(t.sourcePosition.hasSameParentAs(e.position)&&(t.howMany+=e.howMany),t.sourcePosition=t.sourcePosition._getTransformedByInsertOperation(e),t.targetPosition=t.targetPosition._getTransformedByInsertOperation(e),[t])),Zd(mc,mc,(t,e,n)=>{if(t.sourcePosition.isEqual(e.sourcePosition)&&t.targetPosition.isEqual(e.targetPosition)){if(n.bWasUndone){const n=e.graveyardPosition.path.slice();return n.push(0),t.sourcePosition=new Ys(e.graveyardPosition.root,n),t.howMany=0,[t]}return[new Kd(0)]}if(t.sourcePosition.isEqual(e.sourcePosition)&&!t.targetPosition.isEqual(e.targetPosition)&&!n.bWasUndone&&"splitAtSource"!=n.abRelation){const i="$graveyard"==t.targetPosition.root.rootName,o="$graveyard"==e.targetPosition.root.rootName;if(o&&!i||!(i&&!o)&&n.aIsStrong){const n=e.targetPosition._getTransformedByMergeOperation(e),i=t.targetPosition._getTransformedByMergeOperation(e);return[new dc(n,t.howMany,i,0)]}return[new Kd(0)]}return t.sourcePosition.hasSameParentAs(e.targetPosition)&&(t.howMany+=e.howMany),t.sourcePosition=t.sourcePosition._getTransformedByMergeOperation(e),t.targetPosition=t.targetPosition._getTransformedByMergeOperation(e),t.graveyardPosition.isEqual(e.graveyardPosition)&&n.aIsStrong||(t.graveyardPosition=t.graveyardPosition._getTransformedByMergeOperation(e)),[t]}),Zd(mc,dc,(t,e,n)=>{const i=$s._createFromPositionAndShift(e.sourcePosition,e.howMany);return"remove"==e.type&&!n.bWasUndone&&!n.forceWeakRemove&&t.deletionPosition.hasSameParentAs(e.sourcePosition)&&i.containsPosition(t.sourcePosition)?[new Kd(0)]:(t.sourcePosition.hasSameParentAs(e.targetPosition)&&(t.howMany+=e.howMany),t.sourcePosition.hasSameParentAs(e.sourcePosition)&&(t.howMany-=e.howMany),t.sourcePosition=t.sourcePosition._getTransformedByMoveOperation(e),t.targetPosition=t.targetPosition._getTransformedByMoveOperation(e),t.graveyardPosition.isEqual(e.targetPosition)||(t.graveyardPosition=t.graveyardPosition._getTransformedByMoveOperation(e)),[t])}),Zd(mc,pc,(t,e,n)=>{if(e.graveyardPosition&&(t.graveyardPosition=t.graveyardPosition._getTransformedByDeletion(e.graveyardPosition,1),t.deletionPosition.isEqual(e.graveyardPosition)&&(t.howMany=e.howMany)),t.targetPosition.isEqual(e.splitPosition)){const i=0!=e.howMany,o=e.graveyardPosition&&t.deletionPosition.isEqual(e.graveyardPosition);if(i||o||"mergeTargetNotMoved"==n.abRelation)return t.sourcePosition=t.sourcePosition._getTransformedBySplitOperation(e),[t]}if(t.sourcePosition.isEqual(e.splitPosition)){if("mergeSourceNotMoved"==n.abRelation)return t.howMany=0,t.targetPosition=t.targetPosition._getTransformedBySplitOperation(e),[t];if("mergeSameElement"==n.abRelation||t.sourcePosition.offset>0)return t.sourcePosition=e.moveTargetPosition.clone(),t.targetPosition=t.targetPosition._getTransformedBySplitOperation(e),[t]}return t.sourcePosition.hasSameParentAs(e.splitPosition)&&(t.howMany=e.splitPosition.offset),t.sourcePosition=t.sourcePosition._getTransformedBySplitOperation(e),t.targetPosition=t.targetPosition._getTransformedBySplitOperation(e),[t]}),Zd(dc,hc,(t,e)=>{const n=$s._createFromPositionAndShift(t.sourcePosition,t.howMany)._getTransformedByInsertOperation(e,!1)[0];return t.sourcePosition=n.start,t.howMany=n.end.offset-n.start.offset,t.targetPosition.isEqual(e.position)||(t.targetPosition=t.targetPosition._getTransformedByInsertOperation(e)),[t]}),Zd(dc,dc,(t,e,n)=>{const i=$s._createFromPositionAndShift(t.sourcePosition,t.howMany),o=$s._createFromPositionAndShift(e.sourcePosition,e.howMany);let r,s=n.aIsStrong,a=!n.aIsStrong;if("insertBefore"==n.abRelation||"insertAfter"==n.baRelation?a=!0:"insertAfter"!=n.abRelation&&"insertBefore"!=n.baRelation||(a=!1),r=t.targetPosition.isEqual(e.targetPosition)&&a?t.targetPosition._getTransformedByDeletion(e.sourcePosition,e.howMany):t.targetPosition._getTransformedByMove(e.sourcePosition,e.targetPosition,e.howMany),sh(t,e)&&sh(e,t))return[e.getReversed()];if(i.containsPosition(e.targetPosition)&&i.containsRange(o,!0))return i.start=i.start._getTransformedByMove(e.sourcePosition,e.targetPosition,e.howMany),i.end=i.end._getTransformedByMove(e.sourcePosition,e.targetPosition,e.howMany),ah([i],r);if(o.containsPosition(t.targetPosition)&&o.containsRange(i,!0))return i.start=i.start._getCombined(e.sourcePosition,e.getMovedRangeStart()),i.end=i.end._getCombined(e.sourcePosition,e.getMovedRangeStart()),ah([i],r);const c=li(t.sourcePosition.getParentPath(),e.sourcePosition.getParentPath());if("prefix"==c||"extension"==c)return i.start=i.start._getTransformedByMove(e.sourcePosition,e.targetPosition,e.howMany),i.end=i.end._getTransformedByMove(e.sourcePosition,e.targetPosition,e.howMany),ah([i],r);"remove"!=t.type||"remove"==e.type||n.aWasUndone||n.forceWeakRemove?"remove"==t.type||"remove"!=e.type||n.bWasUndone||n.forceWeakRemove||(s=!1):s=!0;const l=[],d=i.getDifference(o);for(const t of d){t.start=t.start._getTransformedByDeletion(e.sourcePosition,e.howMany),t.end=t.end._getTransformedByDeletion(e.sourcePosition,e.howMany);const n="same"==li(t.start.getParentPath(),e.getMovedRangeStart().getParentPath()),i=t._getTransformedByInsertion(e.getMovedRangeStart(),e.howMany,n);l.push(...i)}const h=i.getIntersection(o);return null!==h&&s&&(h.start=h.start._getCombined(e.sourcePosition,e.getMovedRangeStart()),h.end=h.end._getCombined(e.sourcePosition,e.getMovedRangeStart()),0===l.length?l.push(h):1==l.length?o.start.isBefore(i.start)||o.start.isEqual(i.start)?l.unshift(h):l.push(h):l.splice(1,0,h)),0===l.length?[new Kd(t.baseVersion)]:ah(l,r)}),Zd(dc,pc,(t,e,n)=>{let i=t.targetPosition.clone();t.targetPosition.isEqual(e.insertionPosition)&&e.graveyardPosition&&"moveTargetAfter"!=n.abRelation||(i=t.targetPosition._getTransformedBySplitOperation(e));const o=$s._createFromPositionAndShift(t.sourcePosition,t.howMany);if(o.end.isEqual(e.insertionPosition))return e.graveyardPosition||t.howMany++,t.targetPosition=i,[t];if(o.start.hasSameParentAs(e.splitPosition)&&o.containsPosition(e.splitPosition)){let t=new $s(e.splitPosition,o.end);return t=t._getTransformedBySplitOperation(e),ah([new $s(o.start,e.splitPosition),t],i)}t.targetPosition.isEqual(e.splitPosition)&&"insertAtSource"==n.abRelation&&(i=e.moveTargetPosition),t.targetPosition.isEqual(e.insertionPosition)&&"insertBetween"==n.abRelation&&(i=t.targetPosition);const r=[o._getTransformedBySplitOperation(e)];if(e.graveyardPosition){const i=o.start.isEqual(e.graveyardPosition)||o.containsPosition(e.graveyardPosition);t.howMany>1&&i&&!n.aWasUndone&&r.push($s._createFromPositionAndShift(e.insertionPosition,1))}return ah(r,i)}),Zd(dc,mc,(t,e,n)=>{const i=$s._createFromPositionAndShift(t.sourcePosition,t.howMany);if(e.deletionPosition.hasSameParentAs(t.sourcePosition)&&i.containsPosition(e.sourcePosition))if("remove"!=t.type||n.forceWeakRemove){if(1==t.howMany)return n.bWasUndone?(t.sourcePosition=e.graveyardPosition.clone(),t.targetPosition=t.targetPosition._getTransformedByMergeOperation(e),[t]):[new Kd(0)]}else if(!n.aWasUndone){const n=[];let i=e.graveyardPosition.clone(),o=e.targetPosition._getTransformedByMergeOperation(e);t.howMany>1&&(n.push(new dc(t.sourcePosition,t.howMany-1,t.targetPosition,0)),i=i._getTransformedByMove(t.sourcePosition,t.targetPosition,t.howMany-1),o=o._getTransformedByMove(t.sourcePosition,t.targetPosition,t.howMany-1));const r=e.deletionPosition._getCombined(t.sourcePosition,t.targetPosition),s=new dc(i,1,r,0),a=s.getMovedRangeStart().path.slice();a.push(0);const c=new Ys(s.targetPosition.root,a);o=o._getTransformedByMove(i,r,1);const l=new dc(o,e.howMany,c,0);return n.push(s),n.push(l),n}const o=$s._createFromPositionAndShift(t.sourcePosition,t.howMany)._getTransformedByMergeOperation(e);return t.sourcePosition=o.start,t.howMany=o.end.offset-o.start.offset,t.targetPosition=t.targetPosition._getTransformedByMergeOperation(e),[t]}),Zd(fc,hc,(t,e)=>(t.position=t.position._getTransformedByInsertOperation(e),[t])),Zd(fc,mc,(t,e)=>t.position.isEqual(e.deletionPosition)?(t.position=e.graveyardPosition.clone(),t.position.stickiness="toNext",[t]):(t.position=t.position._getTransformedByMergeOperation(e),[t])),Zd(fc,dc,(t,e)=>(t.position=t.position._getTransformedByMoveOperation(e),[t])),Zd(fc,fc,(t,e,n)=>{if(t.position.isEqual(e.position)){if(!n.aIsStrong)return[new Kd(0)];t.oldName=e.newName}return[t]}),Zd(fc,pc,(t,e)=>{if("same"==li(t.position.path,e.splitPosition.getParentPath())&&!e.graveyardPosition){return[t,new fc(t.position.getShiftedBy(1),t.oldName,t.newName,0)]}return t.position=t.position._getTransformedBySplitOperation(e),[t]}),Zd(gc,gc,(t,e,n)=>{if(t.root===e.root&&t.key===e.key){if(!n.aIsStrong||t.newValue===e.newValue)return[new Kd(0)];t.oldValue=e.newValue}return[t]}),Zd(pc,hc,(t,e)=>(t.splitPosition.hasSameParentAs(e.position)&&t.splitPosition.offset{if(!t.graveyardPosition&&!n.bWasUndone&&t.splitPosition.hasSameParentAs(e.sourcePosition)){const n=e.graveyardPosition.path.slice();n.push(0);const i=new Ys(e.graveyardPosition.root,n),o=pc.getInsertionPosition(new Ys(e.graveyardPosition.root,n)),r=new pc(i,0,null,0);return r.insertionPosition=o,t.splitPosition=t.splitPosition._getTransformedByMergeOperation(e),t.insertionPosition=pc.getInsertionPosition(t.splitPosition),t.graveyardPosition=r.insertionPosition.clone(),t.graveyardPosition.stickiness="toNext",[r,t]}return t.splitPosition.hasSameParentAs(e.deletionPosition)&&!t.splitPosition.isAfter(e.deletionPosition)&&t.howMany--,t.splitPosition.hasSameParentAs(e.targetPosition)&&(t.howMany+=e.howMany),t.splitPosition=t.splitPosition._getTransformedByMergeOperation(e),t.insertionPosition=pc.getInsertionPosition(t.splitPosition),t.graveyardPosition&&(t.graveyardPosition=t.graveyardPosition._getTransformedByMergeOperation(e)),[t]}),Zd(pc,dc,(t,e,n)=>{const i=$s._createFromPositionAndShift(e.sourcePosition,e.howMany);if(t.graveyardPosition){const o=i.start.isEqual(t.graveyardPosition)||i.containsPosition(t.graveyardPosition);if(!n.bWasUndone&&o){const n=t.splitPosition._getTransformedByMoveOperation(e),i=t.graveyardPosition._getTransformedByMoveOperation(e),o=i.path.slice();o.push(0);const r=new Ys(i.root,o);return[new dc(n,t.howMany,r,0)]}t.graveyardPosition=t.graveyardPosition._getTransformedByMoveOperation(e)}if(t.splitPosition.hasSameParentAs(e.sourcePosition)&&i.containsPosition(t.splitPosition)){const n=e.howMany-(t.splitPosition.offset-e.sourcePosition.offset);return t.howMany-=n,t.splitPosition.hasSameParentAs(e.targetPosition)&&t.splitPosition.offset{if(t.splitPosition.isEqual(e.splitPosition)){if(!t.graveyardPosition&&!e.graveyardPosition)return[new Kd(0)];if(t.graveyardPosition&&e.graveyardPosition&&t.graveyardPosition.isEqual(e.graveyardPosition))return[new Kd(0)];if("splitBefore"==n.abRelation)return t.howMany=0,t.graveyardPosition=t.graveyardPosition._getTransformedBySplitOperation(e),[t]}if(t.graveyardPosition&&e.graveyardPosition&&t.graveyardPosition.isEqual(e.graveyardPosition)){const i="$graveyard"==t.splitPosition.root.rootName,o="$graveyard"==e.splitPosition.root.rootName;if(o&&!i||!(i&&!o)&&n.aIsStrong){const n=[];return e.howMany&&n.push(new dc(e.moveTargetPosition,e.howMany,e.splitPosition,0)),t.howMany&&n.push(new dc(t.splitPosition,t.howMany,t.moveTargetPosition,0)),n}return[new Kd(0)]}if(t.graveyardPosition&&(t.graveyardPosition=t.graveyardPosition._getTransformedBySplitOperation(e)),t.splitPosition.isEqual(e.insertionPosition)&&"splitBefore"==n.abRelation)return t.howMany++,[t];if(e.splitPosition.isEqual(t.insertionPosition)&&"splitBefore"==n.baRelation){const n=e.insertionPosition.path.slice();n.push(0);const i=new Ys(e.insertionPosition.root,n);return[t,new dc(t.insertionPosition,1,i,0)]}return t.splitPosition.hasSameParentAs(e.splitPosition)&&t.splitPosition.offset0}addBatch(t){const e=this.editor.model.document.selection,n={ranges:e.hasOwnRange?Array.from(e.getRanges()):[],isBackward:e.isBackward};this._stack.push({batch:t,selection:n}),this.refresh()}clearStack(){this._stack=[],this.refresh()}_restoreSelection(t,e,n){const i=this.editor.model,o=i.document,r=[];for(const e of t){const t=lh(e,n).find(t=>t.start.root!=o.graveyard);t&&r.push(t)}r.length&&i.change(t=>{t.setSelection(r,{backward:e})})}_undo(t,e){const n=this.editor.model,i=n.document;this._createdBatches.add(e);const o=t.operations.slice().filter(t=>t.isDocumentOperation);o.reverse();for(const t of o){const o=t.baseVersion+1,r=Array.from(i.history.getOperations(o)),s=eh([t.getReversed()],r,{useRelations:!0,document:this.editor.model.document,padWithNoOps:!1,forceWeakRemove:!0}).operationsA;for(const o of s)e.addOperation(o),n.applyOperation(o),i.history.setOperationAsUndone(t,o)}}}function lh(t,e){const n=t.getTransformedByOperations(e);n.sort((t,e)=>t.start.isBefore(e.start)?-1:1);for(let t=1;te.batch==t):this._stack.length-1,n=this._stack.splice(e,1)[0],i=this.editor.model.createBatch("transparent");this.editor.model.enqueueChange(i,()=>{this._undo(n.batch,i);const t=this.editor.model.document.history.getOperations(n.batch.baseVersion);this._restoreSelection(n.selection.ranges,n.selection.isBackward,t),this.fire("revert",n.batch,i)}),this.refresh()}}class hh extends ch{execute(){const t=this._stack.pop(),e=this.editor.model.createBatch("transparent");this.editor.model.enqueueChange(e,()=>{const n=t.batch.operations[t.batch.operations.length-1].baseVersion+1,i=this.editor.model.document.history.getOperations(n);this._restoreSelection(t.selection.ranges,t.selection.isBackward,i),this._undo(t.batch,e)}),this.refresh()}}class uh extends _d{static get pluginName(){return"UndoEditing"}constructor(t){super(t),this._batchRegistry=new WeakSet}init(){const t=this.editor;this._undoCommand=new dh(t),this._redoCommand=new hh(t),t.commands.add("undo",this._undoCommand),t.commands.add("redo",this._redoCommand),this.listenTo(t.model,"applyOperation",(t,e)=>{const n=e[0];if(!n.isDocumentOperation)return;const i=n.batch,o=this._redoCommand._createdBatches.has(i),r=this._undoCommand._createdBatches.has(i);this._batchRegistry.has(i)||"transparent"==i.type&&!o&&!r||(o?this._undoCommand.addBatch(i):r||(this._undoCommand.addBatch(i),this._redoCommand.clearStack()),this._batchRegistry.add(i))},{priority:"highest"}),this.listenTo(this._undoCommand,"revert",(t,e,n)=>{this._redoCommand.addBatch(n)}),t.keystrokes.set("CTRL+Z","undo"),t.keystrokes.set("CTRL+Y","redo"),t.keystrokes.set("CTRL+SHIFT+Z","redo")}}var fh='',gh='';class mh extends _d{init(){const t=this.editor,e=t.locale,n=t.t,i="ltr"==e.uiLanguageDirection?fh:gh,o="ltr"==e.uiLanguageDirection?gh:fh;this._addButton("undo",n("bj"),"CTRL+Z",i),this._addButton("redo",n("bk"),"CTRL+Y",o)}_addButton(t,e,n,i){const o=this.editor;o.ui.componentFactory.add(t,r=>{const s=o.commands.get(t),a=new id(r);return a.set({label:e,icon:i,keystroke:n,tooltip:!0}),a.bind("isEnabled").to(s,"isEnabled"),this.listenTo(a,"execute",()=>o.execute(t)),a})}}class ph extends _d{static get requires(){return[uh,mh]}static get pluginName(){return"Undo"}}class bh extends _d{static get pluginName(){return"PendingActions"}init(){this.set("hasAny",!1),this._actions=new oo({idProperty:"_id"}),this._actions.delegate("add","remove").to(this)}add(t){if("string"!=typeof t)throw new Gn.b("pendingactions-add-invalid-message: The message must be a string.",this);const e=Object.create(Fi);return e.set("message",t),this._actions.add(e),this.hasAny=!0,e}remove(t){this._actions.remove(t),this.hasAny=!!this._actions.length}get first(){return this._actions.get(0)}[Symbol.iterator](){return this._actions[Symbol.iterator]()}}class wh{constructor(){const t=new window.FileReader;this._reader=t,this._data=void 0,this.set("loaded",0),t.onprogress=(t=>{this.loaded=t.loaded})}get error(){return this._reader.error}get data(){return this._data}read(t){const e=this._reader;return this.total=t.size,new Promise((n,i)=>{e.onload=(()=>{const t=e.result;this._data=t,n(t)}),e.onerror=(()=>{i("error")}),e.onabort=(()=>{i("aborted")}),this._reader.readAsDataURL(t)})}abort(){this._reader.abort()}}ci(wh,Fi);class kh extends _d{static get pluginName(){return"FileRepository"}static get requires(){return[bh]}init(){this.loaders=new oo,this.loaders.on("add",()=>this._updatePendingAction()),this.loaders.on("remove",()=>this._updatePendingAction()),this._loadersMap=new Map,this._pendingAction=null,this.set("uploaded",0),this.set("uploadTotal",null),this.bind("uploadedPercent").to(this,"uploaded",this,"uploadTotal",(t,e)=>e?t/e*100:0)}getLoader(t){return this._loadersMap.get(t)||null}createLoader(t){if(!this.createUploadAdapter)return console.warn(Object(Gn.a)("filerepository-no-upload-adapter: Upload adapter is not defined.")),null;const e=new _h(Promise.resolve(t),this.createUploadAdapter);return this.loaders.add(e),this._loadersMap.set(t,e),t instanceof Promise&&e.file.then(t=>{this._loadersMap.set(t,e)}).catch(()=>{}),e.on("change:uploaded",()=>{let t=0;for(const e of this.loaders)t+=e.uploaded;this.uploaded=t}),e.on("change:uploadTotal",()=>{let t=0;for(const e of this.loaders)e.uploadTotal&&(t+=e.uploadTotal);this.uploadTotal=t}),e}destroyLoader(t){const e=t instanceof _h?t:this.getLoader(t);e._destroy(),this.loaders.remove(e),this._loadersMap.forEach((t,n)=>{t===e&&this._loadersMap.delete(n)})}_updatePendingAction(){const t=this.editor.plugins.get(bh);if(this.loaders.length){if(!this._pendingAction){const e=this.editor.t,n=t=>`${e("ay")} ${parseInt(t)}%.`;this._pendingAction=t.add(n(this.uploadedPercent)),this._pendingAction.bind("message").to(this,"uploadedPercent",n)}}else t.remove(this._pendingAction),this._pendingAction=null}}ci(kh,Fi);class _h{constructor(t,e){this.id=Jn(),this._filePromiseWrapper=this._createFilePromiseWrapper(t),this._adapter=e(this),this._reader=new wh,this.set("status","idle"),this.set("uploaded",0),this.set("uploadTotal",null),this.bind("uploadedPercent").to(this,"uploaded",this,"uploadTotal",(t,e)=>e?t/e*100:0),this.set("uploadResponse",null)}get file(){return this._filePromiseWrapper?this._filePromiseWrapper.promise.then(t=>this._filePromiseWrapper?t:null):Promise.resolve(null)}get data(){return this._reader.data}read(){if("idle"!=this.status)throw new Gn.b("filerepository-read-wrong-status: You cannot call read if the status is different than idle.",this);return this.status="reading",this.file.then(t=>this._reader.read(t)).then(t=>{if("reading"!==this.status)throw this.status;return this.status="idle",t}).catch(t=>{if("aborted"===t)throw this.status="aborted","aborted";throw this.status="error",this._reader.error?this._reader.error:t})}upload(){if("idle"!=this.status)throw new Gn.b("filerepository-upload-wrong-status: You cannot call upload if the status is different than idle.",this);return this.status="uploading",this.file.then(()=>this._adapter.upload()).then(t=>(this.uploadResponse=t,this.status="idle",t)).catch(t=>{if("aborted"===this.status)throw"aborted";throw this.status="error",t})}abort(){const t=this.status;this.status="aborted",this._filePromiseWrapper.isFulfilled?"reading"==t?this._reader.abort():"uploading"==t&&this._adapter.abort&&this._adapter.abort():(this._filePromiseWrapper.promise.catch(()=>{}),this._filePromiseWrapper.rejecter("aborted")),this._destroy()}_destroy(){this._filePromiseWrapper=void 0,this._reader=void 0,this._adapter=void 0,this.uploadResponse=void 0}_createFilePromiseWrapper(t){const e={};return e.promise=new Promise((n,i)=>{e.rejecter=i,e.isFulfilled=!1,t.then(t=>{e.isFulfilled=!0,n(t)}).catch(t=>{e.isFulfilled=!0,i(t)})}),e}}ci(_h,Fi);const vh="ckCsrfToken",yh=40,xh="abcdefghijklmnopqrstuvwxyz0123456789";function Ah(){let t=function(t){t=t.toLowerCase();const e=document.cookie.split(";");for(const n of e){const e=n.split("="),i=decodeURIComponent(e[0].trim().toLowerCase());if(i===t)return decodeURIComponent(e[1])}return null}(vh);return t&&t.length==yh||(t=function(t){let e="";const n=new Uint8Array(t);window.crypto.getRandomValues(n);for(let t=0;t.5?i.toUpperCase():i}return e}(yh),function(t,e){document.cookie=encodeURIComponent(t)+"="+encodeURIComponent(e)+";path=/"}(vh,t)),t}class Th extends _d{static get requires(){return[kh]}static get pluginName(){return"CKFinderUploadAdapter"}init(){const t=this.editor.config.get("ckfinder.uploadUrl");t&&(this.editor.plugins.get(kh).createUploadAdapter=(e=>new Ch(e,t,this.editor.t)))}}class Ch{constructor(t,e,n){this.loader=t,this.url=e,this.t=n}upload(){return this.loader.file.then(t=>new Promise((e,n)=>{this._initRequest(),this._initListeners(e,n,t),this._sendRequest(t)}))}abort(){this.xhr&&this.xhr.abort()}_initRequest(){const t=this.xhr=new XMLHttpRequest;t.open("POST",this.url,!0),t.responseType="json"}_initListeners(t,e,n){const i=this.xhr,o=this.loader,r=(0,this.t)("a")+` ${n.name}.`;i.addEventListener("error",()=>e(r)),i.addEventListener("abort",()=>e()),i.addEventListener("load",()=>{const n=i.response;if(!n||!n.uploaded)return e(n&&n.error&&n.error.message?n.error.message:r);t({default:n.url})}),i.upload&&i.upload.addEventListener("progress",t=>{t.lengthComputable&&(o.uploadTotal=t.total,o.uploaded=t.loaded)})}_sendRequest(t){const e=new FormData;e.append("upload",t),e.append("ckCsrfToken",Ah()),this.xhr.send(e)}}class Ph{static get pluginName(){return"BlockAutoformatEditing"}constructor(t,e,n){let i,o=null;"function"==typeof n?i=n:(o=t.commands.get(n),i=(()=>{t.execute(n)})),t.model.document.on("change",(n,r)=>{if(o&&!o.isEnabled)return;if("transparent"==r.type)return;const s=Array.from(t.model.document.differ.getChanges()),a=s[0];if(1!=s.length||"insert"!==a.type||"$text"!=a.name||1!=a.length)return;const c=a.position.textNode||a.position.nodeAfter;if(!c.parent.is("paragraph"))return;const l=e.exec(c.data);l&&t.model.enqueueChange(t=>{const e=t.createPositionAt(c.parent,0),n=t.createPositionAt(c.parent,l[0].length),o=new oa(e,n);!1!==i({match:l})&&t.remove(o),o.detach()})})}}class Sh{static get pluginName(){return"InlineAutoformatEditing"}constructor(t,e,n){let i,o,r,s;e instanceof RegExp?i=e:r=e,"string"==typeof n?o=n:s=n,r=r||(t=>{let e;const n=[],o=[];for(;null!==(e=i.exec(t))&&!(e&&e.length<4);){let{index:t,1:i,2:r,3:s}=e;const a=i+r+s,c=[t+=e[0].length-a.length,t+i.length],l=[t+i.length+r.length,t+i.length+r.length+s.length];n.push(c),n.push(l),o.push([t+i.length,t+i.length+r.length])}return{remove:n,format:o}}),s=s||((e,n)=>{const i=t.model.schema.getValidRanges(n,o);for(const t of i)e.setAttribute(o,!0,t);e.removeSelectionAttribute(o)}),t.model.document.on("change",(e,n)=>{if("transparent"==n.type)return;const i=t.model,o=i.document.selection;if(!o.isCollapsed)return;const a=Array.from(i.document.differ.getChanges()),c=a[0];if(1!=a.length||"insert"!==c.type||"$text"!=c.name||1!=c.length)return;const l=o.focus,d=l.parent,{text:h,range:u}=function(t,e){let n=t.start;return{text:Array.from(t.getItems()).reduce((t,i)=>i.is("text")||i.is("textProxy")?t+i.data:(n=e.createPositionAfter(i),""),""),range:e.createRange(n,t.end)}}(i.createRange(i.createPositionAt(d,0),l),i),f=r(h),g=Mh(u.start,f.format,i),m=Mh(u.start,f.remove,i);g.length&&m.length&&i.enqueueChange(t=>{if(!1!==s(t,g))for(const e of m.reverse())t.remove(e)})})}}function Mh(t,e,n){return e.filter(t=>void 0!==t[0]&&void 0!==t[1]).map(e=>n.createRange(t.getShiftedBy(e[0]),t.getShiftedBy(e[1])))}function Eh(t,e){return(n,i)=>{if(!t.commands.get(e).isEnabled)return!1;const o=t.model.schema.getValidRanges(i,e);for(const t of o)n.setAttribute(e,!0,t);n.removeSelectionAttribute(e)}}class Ih extends Td{constructor(t,e){super(t),this.attributeKey=e}refresh(){const t=this.editor.model,e=t.document;this.value=this._getValueFromFirstAllowedNode(),this.isEnabled=t.schema.checkAttributeInSelection(e.selection,this.attributeKey)}execute(t={}){const e=this.editor.model,n=e.document.selection,i=void 0===t.forceValue?!this.value:t.forceValue;e.change(t=>{if(n.isCollapsed)i?t.setSelectionAttribute(this.attributeKey,!0):t.removeSelectionAttribute(this.attributeKey);else{const o=e.schema.getValidRanges(n.getRanges(),this.attributeKey);for(const e of o)i?t.setAttribute(this.attributeKey,i,e):t.removeAttribute(this.attributeKey,e)}})}_getValueFromFirstAllowedNode(){const t=this.editor.model,e=t.schema,n=t.document.selection;if(n.isCollapsed)return n.hasAttribute(this.attributeKey);for(const t of n.getRanges())for(const n of t.getItems())if(e.checkAttribute(n,this.attributeKey))return n.hasAttribute(this.attributeKey);return!1}}const Nh="bold";class Oh extends _d{static get pluginName(){return"BoldEditing"}init(){const t=this.editor;t.model.schema.extend("$text",{allowAttributes:Nh}),t.model.schema.setAttributeProperties(Nh,{isFormatting:!0,copyOnEnter:!0}),t.conversion.attributeToElement({model:Nh,view:"strong",upcastAlso:["b",t=>{const e=t.getStyle("font-weight");return e?"bold"==e||Number(e)>=600?{name:!0,styles:["font-weight"]}:void 0:null}]}),t.commands.add(Nh,new Ih(t,Nh)),t.keystrokes.set("CTRL+B",Nh)}}var Rh='';const Dh="bold";class Lh extends _d{init(){const t=this.editor,e=t.t;t.ui.componentFactory.add(Dh,n=>{const i=t.commands.get(Dh),o=new id(n);return o.set({label:e("d"),icon:Rh,keystroke:"CTRL+B",tooltip:!0,isToggleable:!0}),o.bind("isOn","isEnabled").to(i,"value","isEnabled"),this.listenTo(o,"execute",()=>t.execute(Dh)),o})}}const jh="italic";class Vh extends _d{static get pluginName(){return"ItalicEditing"}init(){const t=this.editor;t.model.schema.extend("$text",{allowAttributes:jh}),t.model.schema.setAttributeProperties(jh,{isFormatting:!0,copyOnEnter:!0}),t.conversion.attributeToElement({model:jh,view:"i",upcastAlso:["em",{styles:{"font-style":"italic"}}]}),t.commands.add(jh,new Ih(t,jh)),t.keystrokes.set("CTRL+I",jh)}}var zh='';const Bh="italic";class Fh extends _d{init(){const t=this.editor,e=t.t;t.ui.componentFactory.add(Bh,n=>{const i=t.commands.get(Bh),o=new id(n);return o.set({label:e("al"),icon:zh,keystroke:"CTRL+I",tooltip:!0,isToggleable:!0}),o.bind("isOn","isEnabled").to(i,"value","isEnabled"),this.listenTo(o,"execute",()=>t.execute(Bh)),o})}}function Uh(t){const e=t.next();return e.done?null:e.value}class Hh extends Td{refresh(){this.value=this._getValue(),this.isEnabled=this._checkEnabled()}execute(t={}){const e=this.editor.model,n=e.schema,i=e.document.selection,o=Array.from(i.getSelectedBlocks()),r=void 0===t.forceValue?!this.value:t.forceValue;e.change(t=>{if(r){const e=o.filter(t=>qh(t)||Yh(n,t));this._applyQuote(t,e)}else this._removeQuote(t,o.filter(qh))})}_getValue(){const t=Uh(this.editor.model.document.selection.getSelectedBlocks());return!(!t||!qh(t))}_checkEnabled(){if(this.value)return!0;const t=this.editor.model.document.selection,e=this.editor.model.schema,n=Uh(t.getSelectedBlocks());return!!n&&Yh(e,n)}_removeQuote(t,e){Wh(t,e).reverse().forEach(e=>{if(e.start.isAtStart&&e.end.isAtEnd)return void t.unwrap(e.start.parent);if(e.start.isAtStart){const n=t.createPositionBefore(e.start.parent);return void t.move(e,n)}e.end.isAtEnd||t.split(e.end);const n=t.createPositionAfter(e.end.parent);t.move(e,n)})}_applyQuote(t,e){const n=[];Wh(t,e).reverse().forEach(e=>{let i=qh(e.start);i||(i=t.createElement("blockQuote"),t.wrap(e,i)),n.push(i)}),n.reverse().reduce((e,n)=>e.nextSibling==n?(t.merge(t.createPositionAfter(e)),e):n)}}function qh(t){return"blockQuote"==t.parent.name?t.parent:null}function Wh(t,e){let n,i=0;const o=[];for(;i{if(t.endsWith("blockQuote")&&"blockQuote"==e.name)return!1}),t.conversion.elementToElement({model:"blockQuote",view:"blockquote"}),t.model.document.registerPostFixer(n=>{const i=t.model.document.differ.getChanges();for(const t of i)if("insert"==t.type){const i=t.position.nodeAfter;if(!i)continue;if(i.is("blockQuote")&&i.isEmpty)return n.remove(i),!0;if(i.is("blockQuote")&&!e.checkChild(t.position,i))return n.unwrap(i),!0;if(i.is("element")){const t=n.createRangeIn(i);for(const i of t.getItems())if(i.is("blockQuote")&&!e.checkChild(n.createPositionBefore(i),i))return n.unwrap(i),!0}}else if("remove"==t.type){const e=t.position.parent;if(e.is("blockQuote")&&e.isEmpty)return n.remove(e),!0}return!1})}afterInit(){const t=this.editor.commands.get("blockQuote");this.listenTo(this.editor.editing.view.document,"enter",(e,n)=>{const i=this.editor.model.document,o=i.selection.getLastPosition().parent;i.selection.isCollapsed&&o.isEmpty&&t.value&&(this.editor.execute("blockQuote"),this.editor.editing.view.scrollToTheSelection(),n.preventDefault(),e.stop())})}}var Gh='';n(44);class Qh extends _d{init(){const t=this.editor,e=t.t;t.ui.componentFactory.add("blockQuote",n=>{const i=t.commands.get("blockQuote"),o=new id(n);return o.set({label:e("n"),icon:Gh,tooltip:!0,isToggleable:!0}),o.bind("isOn","isEnabled").to(i,"value","isEnabled"),this.listenTo(o,"execute",()=>t.execute("blockQuote")),o})}}var Kh='';class Jh extends _d{static get pluginName(){return"CKFinderUI"}init(){const t=this.editor,e=t.ui.componentFactory,n=t.t;e.add("ckfinder",e=>{const i=t.commands.get("ckfinder"),o=new id(e);return o.set({label:n("e"),icon:Kh,tooltip:!0}),o.bind("isEnabled").to(i),o.on("execute",()=>{t.execute("ckfinder"),t.editing.view.focus()}),o})}}class Zh extends hr{constructor(t){super(t),this._observedElements=new Set}observe(t,e){this.document.getRoot(e).on("change:children",(e,n)=>{this.view.once("render",()=>this._updateObservedElements(t,n))})}_updateObservedElements(t,e){if(!e.is("element")||e.is("attributeElement"))return;const n=this.view.domConverter.mapViewToDom(e);if(n){for(const t of n.querySelectorAll("img"))this._observedElements.has(t)||(this.listenTo(t,"load",(t,e)=>this._fireEvents(e)),this._observedElements.add(t));for(const e of this._observedElements)t.contains(e)||(this.stopListening(e),this._observedElements.delete(e))}}_fireEvents(t){this.isEnabled&&(this.document.fire("layoutChanged"),this.document.fire("imageLoaded",t))}destroy(){this._observedElements.clear(),super.destroy()}}function Xh(t){return n=>{n.on(`attribute:${t}:image`,e)};function e(t,e,n){if(!n.consumable.consume(e.item,t.name))return;const i=n.writer,o=n.mapper.toViewElement(e.item).getChild(0);null!==e.attributeNewValue?i.setAttribute(e.attributeKey,e.attributeNewValue,o):i.removeAttribute(e.attributeKey,o)}}class tu{constructor(){this._stack=[]}add(t,e){const n=this._stack,i=n[0];this._insertDescriptor(t);const o=n[0];i===o||eu(i,o)||this.fire("change:top",{oldDescriptor:i,newDescriptor:o,writer:e})}remove(t,e){const n=this._stack,i=n[0];this._removeDescriptor(t);const o=n[0];i===o||eu(i,o)||this.fire("change:top",{oldDescriptor:i,newDescriptor:o,writer:e})}_insertDescriptor(t){const e=this._stack,n=e.findIndex(e=>e.id===t.id);if(eu(t,e[n]))return;n>-1&&e.splice(n,1);let i=0;for(;e[i]&&nu(e[i],t);)i++;e.splice(i,0,t)}_removeDescriptor(t){const e=this._stack,n=e.findIndex(e=>e.id===t);n>-1&&e.splice(n,1)}}function eu(t,e){return t&&e&&t.priority==e.priority&&iu(t.classes)==iu(e.classes)}function nu(t,e){return t.priority>e.priority||!(t.priorityiu(e.classes)}function iu(t){return Array.isArray(t)?t.sort().join(","):t}ci(tu,ei);var ou='';const ru="ck-widget",su="ck-widget_selected";function au(t){return!!t.is("element")&&!!t.getCustomProperty("widget")}function cu(t,e,n={}){return go.isEdge||e.setAttribute("contenteditable","false",t),e.addClass(ru,t),e.setCustomProperty("widget",!0,t),t.getFillerOffset=uu,n.label&&function(t,e,n){n.setCustomProperty("widgetLabel",e,t)}(t,n.label,e),n.hasSelectionHandle&&function(t,e){const n=e.createUIElement("div",{class:"ck ck-widget__selection-handle"},function(t){const e=this.toDomElement(t),n=new ed;return n.set("content",ou),n.render(),e.appendChild(n.element),e});e.insert(e.createPositionAt(t,0),n),e.addClass(["ck-widget_with-selection-handle"],t)}(t,e),function(t,e,n,i){const o=new tu;o.on("change:top",(e,o)=>{o.oldDescriptor&&i(t,o.oldDescriptor,o.writer),o.newDescriptor&&n(t,o.newDescriptor,o.writer)}),e.setCustomProperty("addHighlight",(t,e,n)=>o.add(e,n),t),e.setCustomProperty("removeHighlight",(t,e,n)=>o.remove(e,n),t)}(t,e,(t,e,n)=>n.addClass(i(e.classes),t),(t,e,n)=>n.removeClass(i(e.classes),t)),t;function i(t){return Array.isArray(t)?t:[t]}}function lu(t){const e=t.getCustomProperty("widgetLabel");return e?"function"==typeof e?e():e:""}function du(t,e){return e.addClass(["ck-editor__editable","ck-editor__nested-editable"],t),go.isEdge||(e.setAttribute("contenteditable",t.isReadOnly?"false":"true",t),t.on("change:isReadOnly",(n,i,o)=>{e.setAttribute("contenteditable",o?"false":"true",t)})),t.on("change:isFocused",(n,i,o)=>{o?e.addClass("ck-editor__nested-editable_focused",t):e.removeClass("ck-editor__nested-editable_focused",t)}),t}function hu(t,e){const n=t.getSelectedElement();if(n&&e.schema.isBlock(n))return e.createPositionAfter(n);const i=t.getSelectedBlocks().next().value;if(i){if(i.isEmpty)return e.createPositionAt(i,0);const n=e.createPositionAfter(i);return t.focus.isTouching(n)?n:e.createPositionBefore(i)}return t.focus}function uu(){return null}function fu(t){const e=t.getSelectedElement();return e&&function(t){return!!t.getCustomProperty("image")&&au(t)}(e)?e:null}function gu(t){return!!t&&t.is("image")}function mu(t,e,n={}){const i=t.createElement("image",n),o=hu(e.document.selection,e);e.insertContent(i,o),i.parent&&t.setSelection(i,"on")}function pu(t){const e=t.schema,n=t.document.selection;return function(t,e,n){const i=function(t,e){const n=hu(t,e).parent;if(n.isEmpty&&!n.is("$root"))return n.parent;return n}(t,n);return e.checkChild(i,"image")}(n,e,t)&&!function(t,e){const n=t.getSelectedElement();return n&&e.isObject(n)}(n,e)&&function(t){return[...t.focus.getAncestors()].every(t=>!t.is("image"))}(n)}class bu extends Td{refresh(){this.isEnabled=pu(this.editor.model)}execute(t){const e=this.editor.model;e.change(n=>{const i=Array.isArray(t.source)?t.source:[t.source];for(const t of i)mu(n,e,{src:t})})}}class wu extends _d{static get pluginName(){return"ImageEditing"}init(){const t=this.editor,e=t.model.schema,n=t.t,i=t.conversion;t.editing.view.addObserver(Zh),e.register("image",{isObject:!0,isBlock:!0,allowWhere:"$block",allowAttributes:["alt","src","srcset"]}),i.for("dataDowncast").elementToElement({model:"image",view:(t,e)=>ku(e)}),i.for("editingDowncast").elementToElement({model:"image",view:(t,e)=>(function(t,e,n){return e.setCustomProperty("image",!0,t),cu(t,e,{label:function(){const e=t.getChild(0).getAttribute("alt");return e?`${e} ${n}`:n}})})(ku(e),e,n("m"))}),i.for("downcast").add(Xh("src")).add(Xh("alt")).add(function(){return e=>{e.on("attribute:srcset:image",t)};function t(t,e,n){if(!n.consumable.consume(e.item,t.name))return;const i=n.writer,o=n.mapper.toViewElement(e.item).getChild(0);if(null===e.attributeNewValue){const t=e.attributeOldValue;t.data&&(i.removeAttribute("srcset",o),i.removeAttribute("sizes",o),t.width&&i.removeAttribute("width",o))}else{const t=e.attributeNewValue;t.data&&(i.setAttribute("srcset",t.data,o),i.setAttribute("sizes","100vw",o),t.width&&i.setAttribute("width",t.width,o))}}}()),i.for("upcast").elementToElement({view:{name:"img",attributes:{src:!0}},model:(t,e)=>e.createElement("image",{src:t.getAttribute("src")})}).attributeToAttribute({view:{name:"img",key:"alt"},model:"alt"}).attributeToAttribute({view:{name:"img",key:"srcset"},model:{key:"srcset",value:t=>{const e={data:t.getAttribute("srcset")};return t.hasAttribute("width")&&(e.width=t.getAttribute("width")),e}}}).add(function(){return e=>{e.on("element:figure",t)};function t(t,e,n){if(!n.consumable.test(e.viewItem,{name:!0,classes:"image"}))return;const i=Array.from(e.viewItem.getChildren()).find(t=>t.is("img"));if(!i||!i.hasAttribute("src")||!n.consumable.test(i,{name:!0}))return;const o=n.convertItem(i,e.modelCursor),r=Uh(o.modelRange.getItems());r&&(n.convertChildren(e.viewItem,n.writer.createPositionAt(r,0)),e.modelRange=o.modelRange,e.modelCursor=o.modelCursor)}}()),t.commands.add("imageInsert",new bu(t))}}function ku(t){const e=t.createEmptyElement("img"),n=t.createContainerElement("figure",{class:"image"});return t.insert(t.createPositionAt(n,0),e),n}function _u(t,e,n){return n.createRange(vu(t,e,!0,n),vu(t,e,!1,n))}function vu(t,e,n,i){let o=t.textNode||(n?t.nodeBefore:t.nodeAfter),r=null;for(;o&&o.getAttribute("linkHref")==e;)r=o,o=n?o.previousSibling:o.nextSibling;return r?i.createPositionAt(r,n?"before":"after"):t}class yu extends Td{constructor(t){super(t),this.manualDecorators=new oo}restoreManualDecoratorStates(){for(const t of this.manualDecorators)t.value=this._getDecoratorStateFromModel(t.id)}refresh(){const t=this.editor.model,e=t.document;this.value=e.selection.getAttribute("linkHref");for(const t of this.manualDecorators)t.value=this._getDecoratorStateFromModel(t.id);this.isEnabled=t.schema.checkAttributeInSelection(e.selection,"linkHref")}execute(t,e={}){const n=this.editor.model,i=n.document.selection,o=[],r=[];for(const t in e)e[t]?o.push(t):r.push(t);n.change(e=>{if(i.isCollapsed){const s=i.getFirstPosition();if(i.hasAttribute("linkHref")){const a=_u(s,i.getAttribute("linkHref"),n);e.setAttribute("linkHref",t,a),o.forEach(t=>{e.setAttribute(t,!0,a)}),r.forEach(t=>{e.removeAttribute(t,a)}),e.setSelection(a)}else if(""!==t){const r=js(i.getAttributes());r.set("linkHref",t),o.forEach(t=>{r.set(t,!0)});const a=e.createText(t,r);n.insertContent(a,s),e.setSelection(e.createRangeOn(a))}}else{const s=n.schema.getValidRanges(i.getRanges(),"linkHref");for(const n of s)e.setAttribute("linkHref",t,n),o.forEach(t=>{e.setAttribute(t,!0,n)}),r.forEach(t=>{e.removeAttribute(t,n)})}})}_getDecoratorStateFromModel(t){return this.editor.model.document.selection.getAttribute(t)||!1}}class xu extends Td{refresh(){this.isEnabled=this.editor.model.document.selection.hasAttribute("linkHref")}execute(){const t=this.editor,e=this.editor.model,n=e.document.selection,i=t.commands.get("link");e.change(t=>{const o=n.isCollapsed?[_u(n.getFirstPosition(),n.getAttribute("linkHref"),e)]:n.getRanges();for(const e of o)if(t.removeAttribute("linkHref",e),i)for(const n of i.manualDecorators)t.removeAttribute(n.id,e)})}}var Au=function(t,e,n){var i=-1,o=t.length;e<0&&(e=-e>o?0:o+e),(n=n>o?o:n)<0&&(n+=o),o=e>n?0:n-e>>>0,e>>>=0;for(var r=Array(o);++i=i?t:Au(t,e,n)},Cu=RegExp("[\\u200d\\ud800-\\udfff\\u0300-\\u036f\\ufe20-\\ufe2f\\u20d0-\\u20ff\\ufe0e\\ufe0f]");var Pu=function(t){return Cu.test(t)};var Su=function(t){return t.split("")},Mu="[\\ud800-\\udfff]",Eu="[\\u0300-\\u036f\\ufe20-\\ufe2f\\u20d0-\\u20ff]",Iu="\\ud83c[\\udffb-\\udfff]",Nu="[^\\ud800-\\udfff]",Ou="(?:\\ud83c[\\udde6-\\uddff]){2}",Ru="[\\ud800-\\udbff][\\udc00-\\udfff]",Du="(?:"+Eu+"|"+Iu+")"+"?",Lu="[\\ufe0e\\ufe0f]?"+Du+("(?:\\u200d(?:"+[Nu,Ou,Ru].join("|")+")[\\ufe0e\\ufe0f]?"+Du+")*"),ju="(?:"+[Nu+Eu+"?",Eu,Ou,Ru,Mu].join("|")+")",Vu=RegExp(Iu+"(?="+Iu+")|"+ju+Lu,"g");var zu=function(t){return t.match(Vu)||[]};var Bu=function(t){return Pu(t)?zu(t):Su(t)};var Fu=function(t,e){for(var n=-1,i=null==t?0:t.length,o=Array(i);++nthis._definitions.add(t)):this._definitions.add(t)}getDispatcher(){return t=>{t.on("attribute:linkHref",(t,e,n)=>{if(!n.consumable.test(e.item,"attribute:linkHref"))return;const i=n.writer,o=i.document.selection;for(const t of this._definitions){const r=i.createAttributeElement("a",t.attributes,{priority:5});i.setCustomProperty("link",!0,r),t.callback(e.attributeNewValue)?e.item.is("selection")?i.wrap(o.getFirstRange(),r):i.wrap(n.mapper.toViewRange(e.range),r):i.unwrap(n.mapper.toViewRange(e.range),r)}},{priority:"high"})}}}class Xu{constructor({id:t,label:e,attributes:n}){this.id=t,this.set("value"),this.label=e,this.attributes=n}}ci(Xu,Fi);class tf{constructor(t,e,n){this.model=t,this.attribute=n,this._modelSelection=t.document.selection,this._overrideUid=null,this._isNextGravityRestorationSkipped=!1,e.listenTo(this._modelSelection,"change:range",(t,e)=>{this._isNextGravityRestorationSkipped?this._isNextGravityRestorationSkipped=!1:this._isGravityOverridden&&(!e.directChange&&ef(this._modelSelection.getFirstPosition(),n)||this._restoreGravity())})}handleForwardMovement(t,e){const n=this.attribute;if(!(this._isGravityOverridden||t.isAtStart&&this._hasSelectionAttribute))return rf(t,n)&&this._hasSelectionAttribute?(this._preventCaretMovement(e),this._removeSelectionAttribute(),!0):nf(t,n)?(this._preventCaretMovement(e),this._overrideGravity(),!0):of(t,n)&&this._hasSelectionAttribute?(this._preventCaretMovement(e),this._overrideGravity(),!0):void 0}handleBackwardMovement(t,e){const n=this.attribute;return this._isGravityOverridden?rf(t,n)&&this._hasSelectionAttribute?(this._preventCaretMovement(e),this._restoreGravity(),this._removeSelectionAttribute(),!0):(this._preventCaretMovement(e),this._restoreGravity(),t.isAtStart&&this._removeSelectionAttribute(),!0):rf(t,n)&&!this._hasSelectionAttribute?(this._preventCaretMovement(e),this._setSelectionAttributeFromTheNodeBefore(t),!0):t.isAtEnd&&of(t,n)?this._hasSelectionAttribute?void(sf(t,n)&&(this._skipNextAutomaticGravityRestoration(),this._overrideGravity())):(this._preventCaretMovement(e),this._setSelectionAttributeFromTheNodeBefore(t),!0):t.isAtStart?this._hasSelectionAttribute?(this._removeSelectionAttribute(),this._preventCaretMovement(e),!0):void 0:void(sf(t,n)&&(this._skipNextAutomaticGravityRestoration(),this._overrideGravity()))}get _isGravityOverridden(){return!!this._overrideUid}get _hasSelectionAttribute(){return this._modelSelection.hasAttribute(this.attribute)}_overrideGravity(){this._overrideUid=this.model.change(t=>t.overrideSelectionGravity())}_restoreGravity(){this.model.change(t=>{t.restoreSelectionGravity(this._overrideUid),this._overrideUid=null})}_preventCaretMovement(t){t.preventDefault()}_removeSelectionAttribute(){this.model.change(t=>{t.removeSelectionAttribute(this.attribute)})}_setSelectionAttributeFromTheNodeBefore(t){const e=this.attribute;this.model.change(n=>{n.setSelectionAttribute(this.attribute,t.nodeBefore.getAttribute(e))})}_skipNextAutomaticGravityRestoration(){this._isNextGravityRestorationSkipped=!0}}function ef(t,e){return nf(t,e)||of(t,e)}function nf(t,e){const{nodeBefore:n,nodeAfter:i}=t,o=!!n&&n.hasAttribute(e);return!!i&&i.hasAttribute(e)&&(!o||n.getAttribute(e)!==i.getAttribute(e))}function of(t,e){const{nodeBefore:n,nodeAfter:i}=t,o=!!n&&n.hasAttribute(e),r=!!i&&i.hasAttribute(e);return o&&(!r||n.getAttribute(e)!==i.getAttribute(e))}function rf(t,e){const{nodeBefore:n,nodeAfter:i}=t,o=!!n&&n.hasAttribute(e);if(!!i&&i.hasAttribute(e)&&o)return i.getAttribute(e)!==n.getAttribute(e)}function sf(t,e){return ef(t.getShiftedBy(-1),e)}n(46);const af="ck-link_selected",cf="automatic",lf="manual",df=/^(https?:)?\/\//;class hf extends _d{static get pluginName(){return"LinkEditing"}constructor(t){super(t),t.config.define("link",{addTargetToExternalLinks:!1})}init(){const t=this.editor,e=t.locale;t.model.schema.extend("$text",{allowAttributes:"linkHref"}),t.conversion.for("dataDowncast").attributeToElement({model:"linkHref",view:Ku}),t.conversion.for("editingDowncast").attributeToElement({model:"linkHref",view:(t,e)=>Ku(Ju(t),e)}),t.conversion.for("upcast").elementToAttribute({view:{name:"a",attributes:{href:!0}},model:{key:"linkHref",value:t=>t.getAttribute("href")}}),t.commands.add("link",new yu(t)),t.commands.add("unlink",new xu(t));const n=function(t,e){const n={"Open in a new tab":t("az"),Downloadable:t("ba")};return e.forEach(t=>(t.label&&n[t.label]&&(t.label=n[t.label]),t)),e}(t.t,function(t){const e=[];if(t)for(const[n,i]of Object.entries(t)){const t=Object.assign({},i,{id:`link${$u(n)}`});e.push(t)}return e}(t.config.get("link.decorators")));this._enableAutomaticDecorators(n.filter(t=>t.mode===cf)),this._enableManualDecorators(n.filter(t=>t.mode===lf)),function({view:t,model:e,emitter:n,attribute:i,locale:o}){const r=new tf(e,n,i),s=e.document.selection;n.listenTo(t.document,"keydown",(t,e)=>{if(!s.isCollapsed)return;if(e.shiftKey||e.altKey||e.ctrlKey)return;const n=e.keyCode==bo.arrowright,i=e.keyCode==bo.arrowleft;if(!n&&!i)return;const a=s.getFirstPosition(),c=o.contentLanguageDirection;let l;(l="ltr"===c&&n||"rtl"===c&&i?r.handleForwardMovement(a,e):r.handleBackwardMovement(a,e))&&t.stop()},{priority:Zn.get("high")+1})}({view:t.editing.view,model:t.model,emitter:this,attribute:"linkHref",locale:e}),this._setupLinkHighlight()}_enableAutomaticDecorators(t){const e=this.editor,n=new Zu;e.config.get("link.addTargetToExternalLinks")&&n.add({id:"linkIsExternal",mode:cf,callback:t=>df.test(t),attributes:{target:"_blank",rel:"noopener noreferrer"}}),n.add(t),n.length&&e.conversion.for("downcast").add(n.getDispatcher())}_enableManualDecorators(t){if(!t.length)return;const e=this.editor,n=e.commands.get("link").manualDecorators;t.forEach(t=>{e.model.schema.extend("$text",{allowAttributes:t.id}),n.add(new Xu(t)),e.conversion.for("downcast").attributeToElement({model:t.id,view:(e,i)=>{if(e){const e=n.get(t.id).attributes,o=i.createAttributeElement("a",e,{priority:5});return i.setCustomProperty("link",!0,o),o}}}),e.conversion.for("upcast").elementToAttribute({view:{name:"a",attributes:n.get(t.id).attributes},model:{key:t.id}})})}_setupLinkHighlight(){const t=this.editor,e=t.editing.view,n=new Set;e.document.registerPostFixer(e=>{const i=t.model.document.selection;let o=!1;if(i.hasAttribute("linkHref")){const r=_u(i.getFirstPosition(),i.getAttribute("linkHref"),t.model),s=t.editing.mapper.toViewRange(r);for(const t of s.getItems())t.is("a")&&!t.hasClass(af)&&(e.addClass(af,t),n.add(t),o=!0)}return o}),t.conversion.for("editingDowncast").add(t=>{function i(){e.change(t=>{for(const e of n.values())t.removeClass(af,e),n.delete(e)})}t.on("insert",i,{priority:"highest"}),t.on("remove",i,{priority:"highest"}),t.on("attribute",i,{priority:"highest"}),t.on("selection",i,{priority:"highest"})})}}class uf extends _d{static get pluginName(){return"Notification"}init(){this.on("show:warning",(t,e)=>{window.alert(e.message)},{priority:"lowest"})}showSuccess(t,e={}){this._showNotification({message:t,type:"success",namespace:e.namespace,title:e.title})}showInfo(t,e={}){this._showNotification({message:t,type:"info",namespace:e.namespace,title:e.title})}showWarning(t,e={}){this._showNotification({message:t,type:"warning",namespace:e.namespace,title:e.title})}_showNotification(t){const e=`show:${t.type}`+(t.namespace?`:${t.namespace}`:"");this.fire(e,{message:t.message,type:t.type,title:t.title||""})}}class ff extends Td{constructor(t){super(t),this.stopListening(this.editor.model.document,"change"),this.listenTo(this.editor.model.document,"change",()=>this.refresh(),{priority:"low"})}refresh(){const t=this.editor.commands.get("imageInsert"),e=this.editor.commands.get("link");this.isEnabled=t.isEnabled||e.isEnabled}execute(){const t=this.editor,e=this.editor.config.get("ckfinder.openerMethod")||"modal";if("popup"!=e&&"modal"!=e)throw new Gn.b('ckfinder-unknown-openerMethod: The openerMethod config option must by "popup" or "modal".',t);const n=this.editor.config.get("ckfinder.options")||{};n.chooseFiles=!0;const i=n.onInit;n.language||(n.language=t.locale.uiLanguage),n.onInit=(e=>{i&&i(e),e.on("files:choose",n=>{const i=n.data.files.toArray(),o=i.filter(t=>!t.isImage()),r=i.filter(t=>t.isImage());for(const e of o)t.execute("link",e.getUrl());const s=[];for(const t of r){const n=t.getUrl();s.push(n||e.request("file:getProxyUrl",{file:t}))}s.length&&gf(t,s)}),e.on("file:choose:resizedImage",e=>{const n=e.data.resizedUrl;if(n)gf(t,[n]);else{const e=t.plugins.get("Notification"),n=t.locale.t;e.showWarning(n("at"),{title:n("au"),namespace:"ckfinder"})}})}),window.CKFinder[e](n)}}function gf(t,e){if(t.commands.get("imageInsert").isEnabled)t.execute("imageInsert",{source:e});else{const e=t.plugins.get("Notification"),n=t.locale.t;e.showWarning(n("av"),{title:n("aw"),namespace:"ckfinder"})}}class mf extends _d{static get pluginName(){return"CKFinderEditing"}static get requires(){return[uf,wu,hf]}init(){const t=this.editor;t.commands.add("ckfinder",new ff(t))}}const pf=/^data:(\S*?);base64,/;class bf{constructor(t,e,n){if(!t)throw new Gn.b("fileuploader-missing-file: File must be provided as the first argument",null);if(!e)throw new Gn.b("fileuploader-missing-token: Token must be provided as the second argument.",null);if(!n)throw new Gn.b("fileuploader-missing-api-address: Api address must be provided as the third argument.",null);this.file=function(t){if("string"!=typeof t)return!1;const e=t.match(pf);return!(!e||!e.length)}(t)?function(t,e=512){try{const n=t.match(pf)[1],i=atob(t.replace(pf,"")),o=[];for(let t=0;tt(n)),this}onError(t){return this.once("error",(e,n)=>t(n)),this}abort(){this.xhr.abort()}send(){return this._prepareRequest(),this._attachXHRListeners(),this._sendRequest()}_prepareRequest(){const t=new XMLHttpRequest;t.open("POST",this._apiAddress),t.setRequestHeader("Authorization",this._token.value),t.responseType="json",this.xhr=t}_attachXHRListeners(){const t=this,e=this.xhr;function n(e){return()=>t.fire("error",e)}e.addEventListener("error",n("Network Error")),e.addEventListener("abort",n("Abort")),e.upload&&e.upload.addEventListener("progress",t=>{t.lengthComputable&&this.fire("progress",{total:t.total,uploaded:t.loaded})}),e.addEventListener("load",()=>{const t=e.status,n=e.response;if(t<200||t>299)return this.fire("error",n.message||n.error)})}_sendRequest(){const t=new FormData,e=this.xhr;return t.append("file",this.file),new Promise((n,i)=>{e.addEventListener("load",()=>{const t=e.status,o=e.response;return t<200||t>299?o.message?i(new Gn.b("fileuploader-uploading-data-failed: Uploading file failed.",this,{message:o.message})):i(o.error):n(o)}),e.addEventListener("error",()=>i(new Error("Network Error"))),e.addEventListener("abort",()=>i(new Error("Abort"))),e.send(t)})}}ci(bf,ei);const wf={refreshInterval:36e5,autoRefresh:!0};class kf{constructor(t,e=wf){if(!t)throw new Gn.b("token-missing-token-url: A `tokenUrl` must be provided as the first constructor argument.",this);this.set("value",e.initValue),this._refresh="function"==typeof t?t:()=>(function(t){return new Promise((e,n)=>{const i=new XMLHttpRequest;i.open("GET",t),i.addEventListener("load",()=>{const t=i.status,o=i.response;return t<200||t>299?n(new Gn.b("token-cannot-download-new-token: Cannot download new token from the provided url.",null)):e(o)}),i.addEventListener("error",()=>n(new Error("Network Error"))),i.addEventListener("abort",()=>n(new Error("Abort"))),i.send()})})(t),this._options=Object.assign({},wf,e)}init(){return new Promise((t,e)=>{this._options.autoRefresh&&this._startRefreshing(),this.value?t(this):this._refreshToken().then(t).catch(e)})}_refreshToken(){return this._refresh().then(t=>this.set("value",t)).then(()=>this)}destroy(){this._stopRefreshing()}_startRefreshing(){this._refreshInterval=setInterval(()=>this._refreshToken(),this._options.refreshInterval)}_stopRefreshing(){clearInterval(this._refreshInterval)}static create(t,e=wf){return new kf(t,e).init()}}ci(kf,Fi);var _f=kf;class vf extends _d{static get pluginName(){return"CloudServices"}init(){const t=this.editor.config.get("cloudServices")||{};for(const e in t)this[e]=t[e];if(this.tokenUrl)return this.token=new vf.Token(this.tokenUrl),this.token.init();this.token=null}}vf.Token=_f;class yf extends _d{static get requires(){return[kh,vf]}init(){const t=this.editor,e=t.plugins.get(vf),n=e.token,i=e.uploadUrl;n&&(this._uploadGateway=new yf._UploadGateway(n,i),t.plugins.get(kh).createUploadAdapter=(t=>new xf(this._uploadGateway,t)))}}class xf{constructor(t,e){this.uploadGateway=t,this.loader=e}upload(){return this.loader.file.then(t=>(this.fileUploader=this.uploadGateway.upload(t),this.fileUploader.on("progress",(t,e)=>{this.loader.uploadTotal=e.total,this.loader.uploaded=e.uploaded}),this.fileUploader.send()))}abort(){this.fileUploader.abort()}}yf._UploadGateway=class{constructor(t,e){if(!t)throw new Gn.b("uploadgateway-missing-token: Token must be provided.",null);if(!e)throw new Gn.b("uploadgateway-missing-api-address: Api address must be provided.",null);this._token=t,this._apiAddress=e}upload(t){return new bf(t,this._token,this._apiAddress)}};class Af extends Xr{constructor(t){super(t),this.domEventType="mousedown"}onDomEvent(t){this.fire(t.type,t)}}n(48);const Tf=ko("Ctrl+A");class Cf extends _d{static get pluginName(){return"Widget"}init(){const t=this.editor.editing.view,e=t.document;this._previouslySelected=new Set,this.editor.editing.downcastDispatcher.on("selection",(t,e,n)=>{this._clearPreviouslySelectedWidgets(n.writer);const i=n.writer,o=i.document.selection,r=o.getSelectedElement();let s=null;for(const t of o.getRanges())for(const e of t){const t=e.item;au(t)&&!Pf(t,s)&&(i.addClass(su,t),this._previouslySelected.add(t),s=t,t==r&&i.setSelection(o.getRanges(),{fake:!0,label:lu(r)}))}},{priority:"low"}),t.addObserver(Af),this.listenTo(e,"mousedown",(...t)=>this._onMousedown(...t)),this.listenTo(e,"keydown",(...t)=>this._onKeydown(...t),{priority:"high"}),this.listenTo(e,"delete",(t,e)=>{this._handleDelete("forward"==e.direction)&&(e.preventDefault(),t.stop())},{priority:"high"})}_onMousedown(t,e){const n=this.editor,i=n.editing.view,o=i.document;let r=e.target;if(function(t){for(;t;){if(t.is("editableElement")&&!t.is("rootElement"))return!0;if(au(t))return!1;t=t.parent}return!1}(r)){if(go.isSafari&&e.domEvent.detail>=3){const t=n.editing.mapper.toModelElement(r);this.editor.model.change(n=>{e.preventDefault(),n.setSelection(t,"in")})}return}if(!au(r)&&!(r=r.findAncestor(au)))return;e.preventDefault(),o.isFocused||i.focus();const s=n.editing.mapper.toModelElement(r);this._setSelectionOverElement(s)}_onKeydown(t,e){const n=e.keyCode,i="ltr"===this.editor.locale.contentLanguageDirection,o=n==bo.arrowdown||n==bo[i?"arrowright":"arrowleft"];let r=!1;!function(t){return t==bo.arrowright||t==bo.arrowleft||t==bo.arrowup||t==bo.arrowdown}(n)?!function(t){return wo(t)==Tf}(e)?n===bo.enter&&(r=this._handleEnterKey(e.shiftKey)):r=this._selectAllNestedEditableContent()||this._selectAllContent():r=this._handleArrowKeys(o),r&&(e.preventDefault(),t.stop())}_handleDelete(t){if(this.editor.isReadOnly)return;const e=this.editor.model.document.selection;if(!e.isCollapsed)return;const n=this._getObjectElementNextToSelection(t);return n?(this.editor.model.change(t=>{let i=e.anchor.parent;for(;i.isEmpty;){const e=i;i=e.parent,t.remove(e)}this._setSelectionOverElement(n)}),!0):void 0}_handleArrowKeys(t){const e=this.editor.model,n=e.schema,i=e.document.selection,o=i.getSelectedElement();if(o&&n.isObject(o)){const o=t?i.getLastPosition():i.getFirstPosition(),r=n.getNearestSelectionRange(o,t?"forward":"backward");return r&&e.change(t=>{t.setSelection(r)}),!0}if(!i.isCollapsed)return;const r=this._getObjectElementNextToSelection(t);return r&&n.isObject(r)?(this._setSelectionOverElement(r),!0):void 0}_handleEnterKey(t){const e=this.editor.model,n=e.document.selection.getSelectedElement();if(function(t,e){return t&&e.isObject(t)&&!e.isInline(t)}(n,e.schema))return e.change(i=>{let o=i.createPositionAt(n,t?"before":"after");const r=i.createElement("paragraph");if(e.schema.isBlock(n.parent)){const t=e.schema.findAllowedParent(o,r);o=i.split(o,t).position}i.insert(r,o),i.setSelection(r,"in")}),!0}_selectAllNestedEditableContent(){const t=this.editor.model,e=t.document.selection,n=t.schema.getLimitElement(e);return e.getFirstRange().root!=n&&(t.change(t=>{t.setSelection(t.createRangeIn(n))}),!0)}_selectAllContent(){const t=this.editor.model,e=this.editor.editing,n=e.view.document.selection.getSelectedElement();if(n&&au(n)){const i=e.mapper.toModelElement(n.parent);return t.change(t=>{t.setSelection(t.createRangeIn(i))}),!0}return!1}_setSelectionOverElement(t){this.editor.model.change(e=>{e.setSelection(e.createRangeOn(t))})}_getObjectElementNextToSelection(t){const e=this.editor.model,n=e.schema,i=e.document.selection,o=e.createSelection(i);e.modifySelection(o,{direction:t?"forward":"backward"});const r=t?o.focus.nodeBefore:o.focus.nodeAfter;return r&&n.isObject(r)?r:null}_clearPreviouslySelectedWidgets(t){for(const e of this._previouslySelected)t.removeClass(su,e);this._previouslySelected.clear()}}function Pf(t,e){return!!e&&Array.from(t.getAncestors()).includes(e)}class Sf extends Td{refresh(){const t=this.editor.model.document.selection.getSelectedElement();this.isEnabled=gu(t),gu(t)&&t.hasAttribute("alt")?this.value=t.getAttribute("alt"):this.value=!1}execute(t){const e=this.editor.model,n=e.document.selection.getSelectedElement();e.change(e=>{e.setAttribute("alt",t.newValue,n)})}}class Mf extends _d{static get pluginName(){return"ImageTextAlternativeEditing"}init(){this.editor.commands.add("imageTextAlternative",new Sf(this.editor))}}n(50);class Ef extends Ll{constructor(t,e){super(t);const n=`ck-input-${Jn()}`,i=`ck-status-${Jn()}`;this.set("label"),this.set("value"),this.set("isReadOnly",!1),this.set("errorText",null),this.set("infoText",null),this.labelView=this._createLabelView(n),this.inputView=this._createInputView(e,n,i),this.statusView=this._createStatusView(i),this.bind("_statusText").to(this,"errorText",this,"infoText",(t,e)=>t||e);const o=this.bindTemplate;this.setTemplate({tag:"div",attributes:{class:["ck","ck-labeled-input",o.if("isReadOnly","ck-disabled")]},children:[this.labelView,this.inputView,this.statusView]})}_createLabelView(t){const e=new Vl(this.locale);return e.for=t,e.bind("text").to(this,"label"),e}_createInputView(t,e,n){const i=new t(this.locale,n);return i.id=e,i.ariaDescribedById=n,i.bind("value").to(this),i.bind("isReadOnly").to(this),i.bind("hasError").to(this,"errorText",t=>!!t),i.on("input",()=>{this.errorText=null}),i}_createStatusView(t){const e=new Ll(this.locale),n=this.bindTemplate;return e.setTemplate({tag:"div",attributes:{class:["ck","ck-labeled-input__status",n.if("errorText","ck-labeled-input__status_error"),n.if("_statusText","ck-hidden",t=>!t)],id:t,role:n.if("errorText","alert")},children:[{text:n.to("_statusText")}]}),e}select(){this.inputView.select()}focus(){this.inputView.focus()}}n(52);class If extends Ll{constructor(t){super(t),this.set("value"),this.set("id"),this.set("placeholder"),this.set("isReadOnly",!1),this.set("hasError",!1),this.set("ariaDescribedById");const e=this.bindTemplate;this.setTemplate({tag:"input",attributes:{type:"text",class:["ck","ck-input","ck-input-text",e.if("hasError","ck-error")],id:e.to("id"),placeholder:e.to("placeholder"),readonly:e.to("isReadOnly"),"aria-invalid":e.if("hasError",!0),"aria-describedby":e.to("ariaDescribedById")},on:{input:e.to("input")}})}render(){super.render();const t=t=>{this.element.value=t||0===t?t:""};t(this.value),this.on("change:value",(e,n,i)=>{t(i)})}select(){this.element.select()}focus(){this.element.focus()}}function Nf({view:t}){t.listenTo(t.element,"submit",(e,n)=>{n.preventDefault(),t.fire("submit")},{useCapture:!0})}var Of='',Rf='';n(54);class Df extends Ll{constructor(t){super(t);const e=this.locale.t;this.focusTracker=new al,this.keystrokes=new Zc,this.labeledInput=this._createLabeledInputView(),this.saveButtonView=this._createButton(e("bf"),Of,"ck-button-save"),this.saveButtonView.type="submit",this.cancelButtonView=this._createButton(e("bg"),Rf,"ck-button-cancel","cancel"),this._focusables=new pl,this._focusCycler=new Wl({focusables:this._focusables,focusTracker:this.focusTracker,keystrokeHandler:this.keystrokes,actions:{focusPrevious:"shift + tab",focusNext:"tab"}}),this.setTemplate({tag:"form",attributes:{class:["ck","ck-text-alternative-form"],tabindex:"-1"},children:[this.labeledInput,this.saveButtonView,this.cancelButtonView]})}render(){super.render(),this.keystrokes.listenTo(this.element),Nf({view:this}),[this.labeledInput,this.saveButtonView,this.cancelButtonView].forEach(t=>{this._focusables.add(t),this.focusTracker.add(t.element)})}_createButton(t,e,n,i){const o=new id(this.locale);return o.set({label:t,icon:e,tooltip:!0}),o.extendTemplate({attributes:{class:n}}),i&&o.delegate("execute").to(this,i),o}_createLabeledInputView(){const t=this.locale.t,e=new Ef(this.locale,If);return e.label=t("cd"),e.inputView.placeholder=t("cd"),e}}n(56);const Lf=Ul("px"),jf=tr.document.body;class Vf extends Ll{constructor(t){super(t);const e=this.bindTemplate;this.set("top",0),this.set("left",0),this.set("position","arrow_nw"),this.set("isVisible",!1),this.set("withArrow",!0),this.set("class"),this.content=this.createCollection(),this.setTemplate({tag:"div",attributes:{class:["ck","ck-balloon-panel",e.to("position",t=>`ck-balloon-panel_${t}`),e.if("isVisible","ck-balloon-panel_visible"),e.if("withArrow","ck-balloon-panel_with-arrow"),e.to("class")],style:{top:e.to("top",Lf),left:e.to("left",Lf)}},children:this.content})}show(){this.isVisible=!0}hide(){this.isVisible=!1}attachTo(t){this.show();const e=Vf.defaultPositions,n=Object.assign({},{element:this.element,positions:[e.southArrowNorth,e.southArrowNorthWest,e.southArrowNorthEast,e.northArrowSouth,e.northArrowSouthWest,e.northArrowSouthEast],limiter:jf,fitInViewport:!0},t),i=Vf._getOptimalPosition(n),o=parseInt(i.left),r=parseInt(i.top),s=i.name;Object.assign(this,{top:r,left:o,position:s})}pin(t){this.unpin(),this._pinWhenIsVisibleCallback=(()=>{this.isVisible?this._startPinning(t):this._stopPinning()}),this._startPinning(t),this.listenTo(this,"change:isVisible",this._pinWhenIsVisibleCallback)}unpin(){this._pinWhenIsVisibleCallback&&(this._stopPinning(),this.stopListening(this,"change:isVisible",this._pinWhenIsVisibleCallback),this._pinWhenIsVisibleCallback=null,this.hide())}_startPinning(t){this.attachTo(t);const e=zf(t.target),n=t.limiter?zf(t.limiter):jf;this.listenTo(tr.document,"scroll",(i,o)=>{const r=o.target,s=e&&r.contains(e),a=n&&r.contains(n);!s&&!a&&e&&n||this.attachTo(t)},{useCapture:!0}),this.listenTo(tr.window,"resize",()=>{this.attachTo(t)})}_stopPinning(){this.stopListening(tr.document,"scroll"),this.stopListening(tr.window,"resize")}}function zf(t){return Wn(t)?t:_s(t)?t.commonAncestorContainer:"function"==typeof t?zf(t()):null}function Bf(t,e){return t.top-e.height-Vf.arrowVerticalOffset}function Ff(t){return t.bottom+Vf.arrowVerticalOffset}Vf.arrowHorizontalOffset=25,Vf.arrowVerticalOffset=10,Vf._getOptimalPosition=Jl,Vf.defaultPositions={northArrowSouth:(t,e)=>({top:Bf(t,e),left:t.left+t.width/2-e.width/2,name:"arrow_s"}),northArrowSouthEast:(t,e)=>({top:Bf(t,e),left:t.left+t.width/2-e.width+Vf.arrowHorizontalOffset,name:"arrow_se"}),northArrowSouthWest:(t,e)=>({top:Bf(t,e),left:t.left+t.width/2-Vf.arrowHorizontalOffset,name:"arrow_sw"}),northWestArrowSouth:(t,e)=>({top:Bf(t,e),left:t.left-e.width/2,name:"arrow_s"}),northWestArrowSouthWest:(t,e)=>({top:Bf(t,e),left:t.left-Vf.arrowHorizontalOffset,name:"arrow_sw"}),northWestArrowSouthEast:(t,e)=>({top:Bf(t,e),left:t.left-e.width+Vf.arrowHorizontalOffset,name:"arrow_se"}),northEastArrowSouth:(t,e)=>({top:Bf(t,e),left:t.right-e.width/2,name:"arrow_s"}),northEastArrowSouthEast:(t,e)=>({top:Bf(t,e),left:t.right-e.width+Vf.arrowHorizontalOffset,name:"arrow_se"}),northEastArrowSouthWest:(t,e)=>({top:Bf(t,e),left:t.right-Vf.arrowHorizontalOffset,name:"arrow_sw"}),southArrowNorth:(t,e)=>({top:Ff(t),left:t.left+t.width/2-e.width/2,name:"arrow_n"}),southArrowNorthEast:(t,e)=>({top:Ff(t),left:t.left+t.width/2-e.width+Vf.arrowHorizontalOffset,name:"arrow_ne"}),southArrowNorthWest:(t,e)=>({top:Ff(t),left:t.left+t.width/2-Vf.arrowHorizontalOffset,name:"arrow_nw"}),southWestArrowNorth:(t,e)=>({top:Ff(t),left:t.left-e.width/2,name:"arrow_n"}),southWestArrowNorthWest:(t,e)=>({top:Ff(t),left:t.left-Vf.arrowHorizontalOffset,name:"arrow_nw"}),southWestArrowNorthEast:(t,e)=>({top:Ff(t),left:t.left-e.width+Vf.arrowHorizontalOffset,name:"arrow_ne"}),southEastArrowNorth:(t,e)=>({top:Ff(t),left:t.right-e.width/2,name:"arrow_n"}),southEastArrowNorthEast:(t,e)=>({top:Ff(t),left:t.right-e.width+Vf.arrowHorizontalOffset,name:"arrow_ne"}),southEastArrowNorthWest:(t,e)=>({top:Ff(t),left:t.right-Vf.arrowHorizontalOffset,name:"arrow_nw"})};var Uf='\n',Hf='\n';n(58),n(60);const qf=Ul("px");class Wf extends _d{static get pluginName(){return"ContextualBalloon"}constructor(t){super(t),this.positionLimiter=(()=>{const t=this.editor.editing.view,e=t.document.selection.editableElement;return e?t.domConverter.mapViewToDom(e.root):null}),this.set("visibleView",null),this.view=new Vf(t.locale),t.ui.view.body.add(this.view),t.ui.focusTracker.add(this.view.element),this._viewToStack=new Map,this._idToStack=new Map,this.set("_numberOfStacks",0),this.set("_singleViewMode",!1),this._rotatorView=this._createRotatorView(),this._fakePanelsView=this._createFakePanelsView()}hasView(t){return Array.from(this._viewToStack.keys()).includes(t)}add(t){if(this.hasView(t.view))throw new Gn.b("contextualballoon-add-view-exist: Cannot add configuration of the same view twice.",[this,t]);const e=t.stackId||"main";if(!this._idToStack.has(e))return this._idToStack.set(e,new Map([[t.view,t]])),this._viewToStack.set(t.view,this._idToStack.get(e)),this._numberOfStacks=this._idToStack.size,void(this._visibleStack&&!t.singleViewMode||this.showStack(e));const n=this._idToStack.get(e);t.singleViewMode&&this.showStack(e),n.set(t.view,t),this._viewToStack.set(t.view,n),n===this._visibleStack&&this._showView(t)}remove(t){if(!this.hasView(t))throw new Gn.b("contextualballoon-remove-view-not-exist: Cannot remove the configuration of a non-existent view.",[this,t]);const e=this._viewToStack.get(t);this._singleViewMode&&this.visibleView===t&&(this._singleViewMode=!1),this.visibleView===t&&(1===e.size?this._idToStack.size>1?this._showNextStack():(this.view.hide(),this.visibleView=null,this._rotatorView.hideView()):this._showView(Array.from(e.values())[e.size-2])),1===e.size?(this._idToStack.delete(this._getStackId(e)),this._numberOfStacks=this._idToStack.size):e.delete(t),this._viewToStack.delete(t)}updatePosition(t){t&&(this._visibleStack.get(this.visibleView).position=t),this.view.pin(this._getBalloonPosition()),this._fakePanelsView.updatePosition()}showStack(t){this.visibleStack=t;const e=this._idToStack.get(t);if(!e)throw new Gn.b("contextualballoon-showstack-stack-not-exist: Cannot show a stack that does not exist.",this);this._visibleStack!==e&&this._showView(Array.from(e.values()).pop())}get _visibleStack(){return this._viewToStack.get(this.visibleView)}_getStackId(t){return Array.from(this._idToStack.entries()).find(e=>e[1]===t)[0]}_showNextStack(){const t=Array.from(this._idToStack.values());let e=t.indexOf(this._visibleStack)+1;t[e]||(e=0),this.showStack(this._getStackId(t[e]))}_showPrevStack(){const t=Array.from(this._idToStack.values());let e=t.indexOf(this._visibleStack)-1;t[e]||(e=t.length-1),this.showStack(this._getStackId(t[e]))}_createRotatorView(){const t=new Yf(this.editor.locale),e=this.editor.locale.t;return this.view.content.add(t),t.bind("isNavigationVisible").to(this,"_numberOfStacks",this,"_singleViewMode",(t,e)=>!e&&t>1),t.on("change:isNavigationVisible",()=>this.updatePosition(),{priority:"low"}),t.bind("counter").to(this,"visibleView",this,"_numberOfStacks",(t,n)=>{if(n<2)return"";const i=Array.from(this._idToStack.values()).indexOf(this._visibleStack)+1;return e("bl",[i,n])}),t.buttonNextView.on("execute",()=>{t.focusTracker.isFocused&&this.editor.editing.view.focus(),this._showNextStack()}),t.buttonPrevView.on("execute",()=>{t.focusTracker.isFocused&&this.editor.editing.view.focus(),this._showPrevStack()}),t}_createFakePanelsView(){const t=new $f(this.editor.locale,this.view);return t.bind("numberOfPanels").to(this,"_numberOfStacks",this,"_singleViewMode",(t,e)=>{return!e&&t>=2?Math.min(t-1,2):0}),t.listenTo(this.view,"change:top",()=>t.updatePosition()),t.listenTo(this.view,"change:left",()=>t.updatePosition()),this.editor.ui.view.body.add(t),t}_showView({view:t,balloonClassName:e="",withArrow:n=!0,singleViewMode:i=!1}){this.view.class=e,this.view.withArrow=n,this._rotatorView.showView(t),this.visibleView=t,this.view.pin(this._getBalloonPosition()),this._fakePanelsView.updatePosition(),i&&(this._singleViewMode=!0)}_getBalloonPosition(){let t=Array.from(this._visibleStack.values()).pop().position;return t&&!t.limiter&&(t=Object.assign({},t,{limiter:this.positionLimiter})),t}}class Yf extends Ll{constructor(t){super(t);const e=t.t,n=this.bindTemplate;this.set("isNavigationVisible",!0),this.focusTracker=new al,this.buttonPrevView=this._createButtonView(e("bm"),Uf),this.buttonNextView=this._createButtonView(e("bn"),Hf),this.content=this.createCollection(),this.setTemplate({tag:"div",attributes:{class:["ck","ck-balloon-rotator"],"z-index":"-1"},children:[{tag:"div",attributes:{class:["ck-balloon-rotator__navigation",n.to("isNavigationVisible",t=>t?"":"ck-hidden")]},children:[this.buttonPrevView,{tag:"span",attributes:{class:["ck-balloon-rotator__counter"]},children:[{text:n.to("counter")}]},this.buttonNextView]},{tag:"div",attributes:{class:"ck-balloon-rotator__content"},children:this.content}]})}render(){super.render(),this.focusTracker.add(this.element)}showView(t){this.hideView(),this.content.add(t)}hideView(){this.content.clear()}_createButtonView(t,e){const n=new id(this.locale);return n.set({label:t,icon:e,tooltip:!0}),n}}class $f extends Ll{constructor(t,e){super(t);const n=this.bindTemplate;this.set("top",0),this.set("left",0),this.set("height",0),this.set("width",0),this.set("numberOfPanels",0),this.content=this.createCollection(),this._balloonPanelView=e,this.setTemplate({tag:"div",attributes:{class:["ck-fake-panel",n.to("numberOfPanels",t=>t?"":"ck-hidden")],style:{top:n.to("top",qf),left:n.to("left",qf),width:n.to("width",qf),height:n.to("height",qf)}},children:this.content}),this.on("change:numberOfPanels",(t,e,n,i)=>{n>i?this._addPanels(n-i):this._removePanels(i-n),this.updatePosition()})}_addPanels(t){for(;t--;){const t=new Ll;t.setTemplate({tag:"div"}),this.content.add(t),this.registerChild(t)}}_removePanels(t){for(;t--;){const t=this.content.last;this.content.remove(t),this.deregisterChild(t),t.destroy()}}updatePosition(){if(this.numberOfPanels){const{top:t,left:e}=this._balloonPanelView,{width:n,height:i}=new xs(this._balloonPanelView.element);Object.assign(this,{top:t,left:e,width:n,height:i})}}}var Gf='';function Qf(t){const e=t.editing.view,n=Vf.defaultPositions;return{target:e.domConverter.viewToDom(e.document.selection.getSelectedElement()),positions:[n.northArrowSouth,n.northArrowSouthWest,n.northArrowSouthEast,n.southArrowNorth,n.southArrowNorthWest,n.southArrowNorthEast]}}class Kf extends _d{static get requires(){return[Wf]}static get pluginName(){return"ImageTextAlternativeUI"}init(){this._createButton(),this._createForm()}destroy(){super.destroy(),this._form.destroy()}_createButton(){const t=this.editor,e=t.t;t.ui.componentFactory.add("imageTextAlternative",n=>{const i=t.commands.get("imageTextAlternative"),o=new id(n);return o.set({label:e("bv"),icon:Gf,tooltip:!0}),o.bind("isEnabled").to(i,"isEnabled"),this.listenTo(o,"execute",()=>this._showForm()),o})}_createForm(){const t=this.editor,e=t.editing.view.document;this._balloon=this.editor.plugins.get("ContextualBalloon"),this._form=new Df(t.locale),this._form.render(),this.listenTo(this._form,"submit",()=>{t.execute("imageTextAlternative",{newValue:this._form.labeledInput.inputView.element.value}),this._hideForm(!0)}),this.listenTo(this._form,"cancel",()=>{this._hideForm(!0)}),this._form.keystrokes.set("Esc",(t,e)=>{this._hideForm(!0),e()}),this.listenTo(t.ui,"update",()=>{fu(e.selection)?this._isVisible&&function(t){const e=t.plugins.get("ContextualBalloon");if(fu(t.editing.view.document.selection)){const n=Qf(t);e.updatePosition(n)}}(t):this._hideForm(!0)}),dd({emitter:this._form,activator:()=>this._isVisible,contextElements:[this._balloon.view.element],callback:()=>this._hideForm()})}_showForm(){if(this._isVisible)return;const t=this.editor,e=t.commands.get("imageTextAlternative"),n=this._form.labeledInput;this._isInBalloon||this._balloon.add({view:this._form,position:Qf(t)}),n.value=n.inputView.element.value=e.value||"",this._form.labeledInput.select()}_hideForm(t){this._isInBalloon&&(this._form.focusTracker.isFocused&&this._form.saveButtonView.focus(),this._balloon.remove(this._form),t&&this.editor.editing.view.focus())}get _isVisible(){return this._balloon.visibleView===this._form}get _isInBalloon(){return this._balloon.hasView(this._form)}}class Jf extends _d{static get requires(){return[Mf,Kf]}static get pluginName(){return"ImageTextAlternative"}}n(62);class Zf extends _d{static get requires(){return[wu,Cf,Jf]}static get pluginName(){return"Image"}}class Xf extends Ll{constructor(t){super(t),this.buttonView=new id(t),this._fileInputView=new tg(t),this._fileInputView.bind("acceptedType").to(this),this._fileInputView.bind("allowMultipleFiles").to(this),this._fileInputView.delegate("done").to(this),this.setTemplate({tag:"span",attributes:{class:"ck-file-dialog-button"},children:[this.buttonView,this._fileInputView]}),this.buttonView.on("execute",()=>{this._fileInputView.open()})}focus(){this.buttonView.focus()}}class tg extends Ll{constructor(t){super(t),this.set("acceptedType"),this.set("allowMultipleFiles",!1);const e=this.bindTemplate;this.setTemplate({tag:"input",attributes:{class:["ck-hidden"],type:"file",tabindex:"-1",accept:e.to("acceptedType"),multiple:e.to("allowMultipleFiles")},on:{change:e.to(()=>{this.element&&this.element.files&&this.element.files.length&&this.fire("done",this.element.files),this.element.value=""})}})}open(){this.element.click()}}var eg='';function ng(t){const e=t.map(t=>t.replace("+","\\+"));return new RegExp(`^image\\/(${e.join("|")})$`)}function ig(t){return new Promise((e,n)=>{const i=t.getAttribute("src");fetch(i).then(t=>t.blob()).then(t=>{const o=function(t,e){return t.type?t.type:e.match(/data:(image\/\w+);base64/)?e.match(/data:(image\/\w+);base64/)[1].toLowerCase():"image/jpeg"}(t,i),r=function(t,e,n){try{return new File([t],e,{type:n})}catch(t){return null}}(t,`image.${o.replace("image/","")}`,o);r?e(r):n()}).catch(n)})}class og extends _d{init(){const t=this.editor,e=t.t;t.ui.componentFactory.add("imageUpload",n=>{const i=new Xf(n),o=t.commands.get("imageUpload"),r=t.config.get("image.upload.types"),s=ng(r);return i.set({acceptedType:r.map(t=>`image/${t}`).join(","),allowMultipleFiles:!0}),i.buttonView.set({label:e("s"),icon:eg,tooltip:!0}),i.buttonView.bind("isEnabled").to(o),i.on("done",(e,n)=>{const i=Array.from(n).filter(t=>s.test(t.type));i.length&&t.execute("imageUpload",{file:i})}),i})}}var rg='';n(64),n(66),n(68);class sg extends _d{constructor(t){super(t),this.placeholder="data:image/svg+xml;utf8,"+encodeURIComponent(rg)}init(){this.editor.editing.downcastDispatcher.on("attribute:uploadStatus:image",(...t)=>this.uploadStatusChange(...t))}uploadStatusChange(t,e,n){const i=this.editor,o=e.item,r=o.getAttribute("uploadId");if(!n.consumable.consume(e.item,t.name))return;const s=i.plugins.get(kh),a=r?e.attributeNewValue:null,c=this.placeholder,l=i.editing.mapper.toViewElement(o),d=n.writer;if("reading"==a)return ag(l,d),void cg(c,l,d);if("uploading"==a){const t=s.loaders.get(r);return ag(l,d),void(t?(lg(l,d),function(t,e,n,i){const o=function(t){const e=t.createUIElement("div",{class:"ck-progress-bar"});return t.setCustomProperty("progressBar",!0,e),e}(e);e.insert(e.createPositionAt(t,"end"),o),n.on("change:uploadedPercent",(t,e,n)=>{i.change(t=>{t.setStyle("width",n+"%",o)})})}(l,d,t,i.editing.view),function(t,e,n){if(n.data){const i=t.getChild(0);e.setAttribute("src",n.data,i)}}(l,d,t)):cg(c,l,d))}"complete"==a&&s.loaders.get(r)&&!go.isEdge&&function(t,e,n){const i=e.createUIElement("div",{class:"ck-image-upload-complete-icon"});e.insert(e.createPositionAt(t,"end"),i),setTimeout(()=>{n.change(t=>t.remove(t.createRangeOn(i)))},3e3)}(l,d,i.editing.view),function(t,e){hg(t,e,"progressBar")}(l,d),lg(l,d),function(t,e){e.removeClass("ck-appear",t)}(l,d)}}function ag(t,e){t.hasClass("ck-appear")||e.addClass("ck-appear",t)}function cg(t,e,n){e.hasClass("ck-image-upload-placeholder")||n.addClass("ck-image-upload-placeholder",e);const i=e.getChild(0);i.getAttribute("src")!==t&&n.setAttribute("src",t,i),dg(e,"placeholder")||n.insert(n.createPositionAfter(i),function(t){const e=t.createUIElement("div",{class:"ck-upload-placeholder-loader"});return t.setCustomProperty("placeholder",!0,e),e}(n))}function lg(t,e){t.hasClass("ck-image-upload-placeholder")&&e.removeClass("ck-image-upload-placeholder",t),hg(t,e,"placeholder")}function dg(t,e){for(const n of t.getChildren())if(n.getCustomProperty(e))return n}function hg(t,e,n){const i=dg(t,n);i&&e.remove(e.createRangeOn(i))}class ug{createDocumentFragment(t){return new Ao(t)}createElement(t,e,n){return new ki(t,e,n)}createText(t){return new fi(t)}clone(t,e=!1){return t._clone(e)}appendChild(t,e){return e._appendChild(t)}insertChild(t,e,n){return n._insertChild(t,e)}removeChildren(t,e,n){return n._removeChildren(t,e)}remove(t){const e=t.parent;return e?this.removeChildren(e.getChildIndex(t),1,e):[]}replace(t,e){const n=t.parent;if(n){const i=n.getChildIndex(t);return this.removeChildren(i,1,n),this.insertChild(i,e,n),!0}return!1}unwrapElement(t){const e=t.parent;if(e){const n=e.getChildIndex(t);this.remove(t),this.insertChild(n,t.getChildren(),e)}}rename(t,e){const n=new ki(t,e.getAttributes(),e.getChildren());return this.replace(e,n)?n:null}setAttribute(t,e,n){n._setAttribute(t,e)}removeAttribute(t,e){e._removeAttribute(t)}addClass(t,e){e._addClass(t)}removeClass(t,e){e._removeClass(t)}setStyle(t,e,n){T(t)&&void 0===n&&(n=e),n._setStyle(t,e)}removeStyle(t,e){e._removeStyle(t)}setCustomProperty(t,e,n){n._setCustomProperty(t,e)}removeCustomProperty(t,e){return e._removeCustomProperty(t)}createPositionAt(t,e){return Zi._createAt(t,e)}createPositionAfter(t){return Zi._createAfter(t)}createPositionBefore(t){return Zi._createBefore(t)}createRange(t,e){return new Xi(t,e)}createRangeOn(t){return Xi._createOn(t)}createRangeIn(t){return Xi._createIn(t)}createSelection(t,e,n){return new no(t,e,n)}}class fg extends Td{refresh(){this.isEnabled=pu(this.editor.model)}execute(t){const e=this.editor,n=e.model,i=e.plugins.get(kh);n.change(e=>{const o=Array.isArray(t.file)?t.file:[t.file];for(const t of o)gg(e,n,i,t)})}}function gg(t,e,n,i){const o=n.createLoader(i);o&&mu(t,e,{uploadId:o.id})}class mg extends _d{static get requires(){return[kh,uf,Ad]}static get pluginName(){return"ImageUploadEditing"}constructor(t){super(t),t.config.define("image",{upload:{types:["jpeg","png","gif","bmp","webp","tiff"]}})}init(){const t=this.editor,e=t.model.document,n=t.model.schema,i=t.conversion,o=t.plugins.get(kh),r=ng(t.config.get("image.upload.types"));n.extend("image",{allowAttributes:["uploadId","uploadStatus"]}),t.commands.add("imageUpload",new fg(t)),i.for("upcast").attributeToAttribute({view:{name:"img",key:"uploadId"},model:"uploadId"}),this.listenTo(t.editing.view.document,"clipboardInput",(e,n)=>{if(function(t){return Array.from(t.types).includes("text/html")&&""!==t.getData("text/html")}(n.dataTransfer))return;const i=Array.from(n.dataTransfer.files).filter(t=>!!t&&r.test(t.type)),o=n.targetRanges.map(e=>t.editing.mapper.toModelRange(e));t.model.change(n=>{n.setSelection(o),i.length&&(e.stop(),t.model.enqueueChange("default",()=>{t.execute("imageUpload",{file:i})}))})}),this.listenTo(t.plugins.get(Ad),"inputTransformation",(e,n)=>{const i=Array.from(t.editing.view.createRangeIn(n.content)).filter(t=>(function(t){return!(!t.is("element","img")||!t.getAttribute("src"))&&(t.getAttribute("src").match(/^data:image\/\w+;base64,/g)||t.getAttribute("src").match(/^blob:/g))})(t.item)&&!t.item.getAttribute("uploadProcessed")).map(t=>({promise:ig(t.item),imageElement:t.item}));if(!i.length)return;const r=new ug;for(const t of i){r.setAttribute("uploadProcessed",!0,t.imageElement);const e=o.createLoader(t.promise);e&&(r.setAttribute("src","",t.imageElement),r.setAttribute("uploadId",e.id,t.imageElement))}}),t.editing.view.document.on("dragover",(t,e)=>{e.preventDefault()}),e.on("change",()=>{const n=e.differ.getChanges({includeChangesInGraveyard:!0});for(const e of n)if("insert"==e.type&&"$text"!=e.name){const n=e.position.nodeAfter,i="$graveyard"==e.position.root.rootName;for(const e of pg(t,n)){const t=e.getAttribute("uploadId");if(!t)continue;const n=o.loaders.get(t);n&&(i?n.abort():"idle"==n.status&&this._readAndUpload(n,e))}}})}_readAndUpload(t,e){const n=this.editor,i=n.model,o=n.locale.t,r=n.plugins.get(kh),s=n.plugins.get(uf);return i.enqueueChange("transparent",t=>{t.setAttribute("uploadStatus","reading",e)}),t.read().then(()=>{const o=t.upload();if(go.isSafari){const t=n.editing.mapper.toViewElement(e).getChild(0);n.editing.view.once("render",()=>{if(!t.parent)return;const e=n.editing.view.domConverter.mapViewToDom(t.parent);if(!e)return;const i=e.style.display;e.style.display="none",e._ckHack=e.offsetHeight,e.style.display=i})}return i.enqueueChange("transparent",t=>{t.setAttribute("uploadStatus","uploading",e)}),o}).then(t=>{i.enqueueChange("transparent",n=>{n.setAttributes({uploadStatus:"complete",src:t.default},e),this._parseAndSetSrcsetAttributeOnImage(t,e,n)}),a()}).catch(n=>{if("error"!==t.status&&"aborted"!==t.status)throw n;"error"==t.status&&n&&s.showWarning(n,{title:o("aq"),namespace:"upload"}),a(),i.enqueueChange("transparent",t=>{t.remove(e)})});function a(){i.enqueueChange("transparent",t=>{t.removeAttribute("uploadId",e),t.removeAttribute("uploadStatus",e)}),r.destroyLoader(t)}}_parseAndSetSrcsetAttributeOnImage(t,e,n){let i=0;const o=Object.keys(t).filter(t=>{const e=parseInt(t,10);if(!isNaN(e))return i=Math.max(i,e),!0}).map(e=>`${t[e]} ${e}w`).join(", ");""!=o&&n.setAttribute("srcset",{data:o,width:i},e)}}function pg(t,e){return Array.from(t.model.createRangeOn(e)).filter(t=>t.item.is("image")).map(t=>t.item)}class bg extends _d{static get pluginName(){return"ImageUpload"}static get requires(){return[mg,og,sg]}}class wg extends Td{refresh(){const t=this.editor.model,e=Uh(t.document.selection.getSelectedBlocks());this.value=!!e&&e.is("paragraph"),this.isEnabled=!!e&&kg(e,t.schema)}execute(t={}){const e=this.editor.model,n=e.document;e.change(i=>{const o=(t.selection||n.selection).getSelectedBlocks();for(const t of o)!t.is("paragraph")&&kg(t,e.schema)&&i.rename(t,"paragraph")})}}function kg(t,e){return e.checkChild(t.parent,"paragraph")&&!e.isObject(t)}class _g extends _d{static get pluginName(){return"Paragraph"}init(){const t=this.editor,e=t.model,n=t.data;t.commands.add("paragraph",new wg(t)),e.schema.register("paragraph",{inheritAllFrom:"$block"}),t.conversion.elementToElement({model:"paragraph",view:"p"}),t.conversion.for("upcast").elementToElement({model:(t,e)=>_g.paragraphLikeElements.has(t.name)?t.isEmpty?null:e.createElement("paragraph"):null,converterPriority:"low"}),n.upcastDispatcher.on("element",(t,e,n)=>{n.consumable.test(e.viewItem,{name:e.viewItem.name})&&yg(e.viewItem,e.modelCursor,n.schema)&&Object.assign(e,vg(e.viewItem,e.modelCursor,n))},{priority:"low"}),n.upcastDispatcher.on("text",(t,e,n)=>{e.modelRange||yg(e.viewItem,e.modelCursor,n.schema)&&Object.assign(e,vg(e.viewItem,e.modelCursor,n))},{priority:"lowest"}),e.document.registerPostFixer(t=>this._autoparagraphEmptyRoots(t)),t.data.on("ready",()=>{e.enqueueChange("transparent",t=>this._autoparagraphEmptyRoots(t))},{priority:"lowest"})}_autoparagraphEmptyRoots(t){const e=this.editor.model;for(const n of e.document.getRootNames()){const i=e.document.getRoot(n);if(i.isEmpty&&"$graveyard"!=i.rootName&&e.schema.checkChild(i,"paragraph"))return t.insertElement("paragraph",i),!0}}}function vg(t,e,n){const i=n.writer.createElement("paragraph");return n.writer.insert(i,e),n.convertItem(t,n.writer.createPositionAt(i,0))}function yg(t,e,n){const i=n.createContext(e);return!!n.checkChild(i,"paragraph")&&!!n.checkChild(i.push("paragraph"),t)}_g.paragraphLikeElements=new Set(["blockquote","dd","div","dt","h1","h2","h3","h4","h5","h6","li","p","td"]);class xg extends Td{constructor(t,e){super(t),this.modelElements=e}refresh(){const t=Uh(this.editor.model.document.selection.getSelectedBlocks());this.value=!!t&&this.modelElements.includes(t.name)&&t.name,this.isEnabled=!!t&&this.modelElements.some(e=>Ag(t,e,this.editor.model.schema))}execute(t){const e=this.editor.model,n=e.document,i=t.value;e.change(t=>{const o=Array.from(n.selection.getSelectedBlocks()).filter(t=>Ag(t,i,e.schema));for(const e of o)e.is(i)||t.rename(e,i)})}}function Ag(t,e,n){return n.checkChild(t.parent,e)&&!n.isObject(t)}const Tg="paragraph";class Cg extends _d{static get pluginName(){return"HeadingEditing"}constructor(t){super(t),t.config.define("heading",{options:[{model:"paragraph",title:"Paragraph",class:"ck-heading_paragraph"},{model:"heading1",view:"h2",title:"Heading 1",class:"ck-heading_heading1"},{model:"heading2",view:"h3",title:"Heading 2",class:"ck-heading_heading2"},{model:"heading3",view:"h4",title:"Heading 3",class:"ck-heading_heading3"}]})}static get requires(){return[_g]}init(){const t=this.editor,e=t.config.get("heading.options"),n=[];for(const i of e)i.model!==Tg&&(t.model.schema.register(i.model,{inheritAllFrom:"$block"}),t.conversion.elementToElement(i),n.push(i.model));this._addDefaultH1Conversion(t),t.commands.add("heading",new xg(t,n))}afterInit(){const t=this.editor,e=t.commands.get("enter"),n=t.config.get("heading.options");e&&this.listenTo(e,"afterExecute",(e,i)=>{const o=t.model.document.selection.getFirstPosition().parent;n.some(t=>o.is(t.model))&&!o.is(Tg)&&0===o.childCount&&i.writer.rename(o,Tg)})}_addDefaultH1Conversion(t){t.conversion.for("upcast").elementToElement({model:"heading1",view:"h1",converterPriority:Zn.get("low")+1})}}class Pg{constructor(t,e){e&&Li(this,e),t&&this.set(t)}}ci(Pg,Fi);n(10);class Sg extends _d{init(){const t=this.editor,e=t.t,n=function(t){const e=t.t,n={Paragraph:e("bw"),"Heading 1":e("bx"),"Heading 2":e("by"),"Heading 3":e("bz"),"Heading 4":e("ca"),"Heading 5":e("cb"),"Heading 6":e("cc")};return t.config.get("heading.options").map(t=>{const e=n[t.title];return e&&e!=t.title&&(t.title=e),t})}(t),i=e("f"),o=e("g");t.ui.componentFactory.add("heading",e=>{const r={},s=new oo,a=t.commands.get("heading"),c=t.commands.get("paragraph"),l=[a];for(const t of n){const e={type:"button",model:new Pg({label:t.title,class:t.class,withText:!0})};"paragraph"===t.model?(e.model.bind("isOn").to(c,"value"),e.model.set("commandName","paragraph"),l.push(c)):(e.model.bind("isOn").to(a,"value",e=>e===t.model),e.model.set({commandName:"heading",commandValue:t.model})),s.add(e),r[t.model]=t.title}const d=hd(e);return ud(d,s),d.buttonView.set({isOn:!1,withText:!0,tooltip:o}),d.extendTemplate({attributes:{class:["ck-heading-dropdown"]}}),d.bind("isEnabled").toMany(l,"isEnabled",(...t)=>t.some(t=>t)),d.buttonView.bind("label").to(a,"value",c,"value",(t,e)=>{const n=t||e&&"paragraph";return r[n]?r[n]:i}),this.listenTo(d,"execute",e=>{t.execute(e.source.commandName,e.source.commandValue?{value:e.source.commandValue}:void 0),t.editing.view.focus()}),d})}}function Mg(t){for(const e of t.getChildren())if(e&&e.is("caption"))return e;return null}function Eg(t){const e=t.parent;return"figcaption"==t.name&&e&&"figure"==e.name&&e.hasClass("image")?{name:!0}:null}class Ig extends _d{static get pluginName(){return"ImageCaptionEditing"}init(){const t=this.editor,e=t.editing.view,n=t.model.schema,i=t.data,o=t.editing,r=t.t;n.register("caption",{allowIn:"image",allowContentOf:"$block",isLimit:!0}),t.model.document.registerPostFixer(t=>this._insertMissingModelCaptionElement(t)),t.conversion.for("upcast").elementToElement({view:Eg,model:"caption"});i.downcastDispatcher.on("insert:caption",Ng(t=>t.createContainerElement("figcaption"),!1));const s=function(t,e){return n=>{const i=n.createEditableElement("figcaption");return n.setCustomProperty("imageCaption",!0,i),dl({view:t,element:i,text:e}),du(i,n)}}(e,r("ar"));o.downcastDispatcher.on("insert:caption",Ng(s)),o.downcastDispatcher.on("insert",this._fixCaptionVisibility(t=>t.item),{priority:"high"}),o.downcastDispatcher.on("remove",this._fixCaptionVisibility(t=>t.position.parent),{priority:"high"}),e.document.registerPostFixer(t=>this._updateCaptionVisibility(t))}_updateCaptionVisibility(t){const e=this.editor.editing.mapper,n=this._lastSelectedCaption;let i;const o=this.editor.model.document.selection,r=o.getSelectedElement();if(r&&r.is("image")){const t=Mg(r);i=e.toViewElement(t)}const s=Og(o.getFirstPosition().parent);if(s&&(i=e.toViewElement(s)),i)return n?n===i?Dg(i,t):(Rg(n,t),this._lastSelectedCaption=i,Dg(i,t)):(this._lastSelectedCaption=i,Dg(i,t));if(n){const e=Rg(n,t);return this._lastSelectedCaption=null,e}return!1}_fixCaptionVisibility(t){return(e,n,i)=>{const o=Og(t(n)),r=this.editor.editing.mapper,s=i.writer;if(o){const t=r.toViewElement(o);t&&(o.childCount?s.removeClass("ck-hidden",t):s.addClass("ck-hidden",t))}}}_insertMissingModelCaptionElement(t){const e=this.editor.model,n=e.document.differ.getChanges(),i=[];for(const t of n)if("insert"==t.type&&"$text"!=t.name){const n=t.position.nodeAfter;if(n.is("image")&&!Mg(n)&&i.push(n),!n.is("image")&&n.childCount)for(const t of e.createRangeIn(n).getItems())t.is("image")&&!Mg(t)&&i.push(t)}for(const e of i)t.appendElement("caption",e);return!!i.length}}function Ng(t,e=!0){return(n,i,o)=>{const r=i.item;if((r.childCount||e)&&gu(r.parent)){if(!o.consumable.consume(i.item,"insert"))return;const e=o.mapper.toViewElement(i.range.start.parent),n=t(o.writer),s=o.writer;r.childCount||s.addClass("ck-hidden",n),function(t,e,n,i){const o=i.writer.createPositionAt(n,"end");i.writer.insert(o,t),i.mapper.bindElements(e,t)}(n,i.item,e,o)}}}function Og(t){const e=t.getAncestors({includeSelf:!0}).find(t=>"caption"==t.name);return e&&e.parent&&"image"==e.parent.name?e:null}function Rg(t,e){return!t.childCount&&!t.hasClass("ck-hidden")&&(e.addClass("ck-hidden",t),!0)}function Dg(t,e){return!!t.hasClass("ck-hidden")&&(e.removeClass("ck-hidden",t),!0)}n(71);class Lg extends Td{constructor(t,e){super(t),this.defaultStyle=!1,this.styles=e.reduce((t,e)=>(t[e.name]=e,e.isDefault&&(this.defaultStyle=e.name),t),{})}refresh(){const t=this.editor.model.document.selection.getSelectedElement();if(this.isEnabled=gu(t),t)if(t.hasAttribute("imageStyle")){const e=t.getAttribute("imageStyle");this.value=!!this.styles[e]&&e}else this.value=this.defaultStyle;else this.value=!1}execute(t){const e=t.value,n=this.editor.model,i=n.document.selection.getSelectedElement();n.change(t=>{this.styles[e].isDefault?t.removeAttribute("imageStyle",i):t.setAttribute("imageStyle",e,i)})}}function jg(t,e){for(const n of e)if(n.name===t)return n}var Vg='',zg='',Bg='',Fg='';const Ug={full:{name:"full",title:"Full size image",icon:Vg,isDefault:!0},side:{name:"side",title:"Side image",icon:Fg,className:"image-style-side"},alignLeft:{name:"alignLeft",title:"Left aligned image",icon:zg,className:"image-style-align-left"},alignCenter:{name:"alignCenter",title:"Centered image",icon:Bg,className:"image-style-align-center"},alignRight:{name:"alignRight",title:"Right aligned image",icon:Fg,className:"image-style-align-right"}},Hg={full:Vg,left:zg,right:Fg,center:Bg};function qg(t=[]){return t.map(Wg)}function Wg(t){if("string"==typeof t){const e=t;Ug[e]?t=Object.assign({},Ug[e]):(console.warn(Object(Gn.a)("image-style-not-found: There is no such image style of given name."),{name:e}),t={name:e})}else if(Ug[t.name]){const e=Ug[t.name],n=Object.assign({},t);for(const i in e)t.hasOwnProperty(i)||(n[i]=e[i]);t=n}return"string"==typeof t.icon&&Hg[t.icon]&&(t.icon=Hg[t.icon]),t}class Yg extends _d{static get pluginName(){return"ImageStyleEditing"}init(){const t=this.editor,e=t.model.schema,n=t.data,i=t.editing;t.config.define("image.styles",["full","side"]);const o=qg(t.config.get("image.styles"));e.extend("image",{allowAttributes:"imageStyle"});const r=function(t){return(e,n,i)=>{if(!i.consumable.consume(n.item,e.name))return;const o=jg(n.attributeNewValue,t),r=jg(n.attributeOldValue,t),s=i.mapper.toViewElement(n.item),a=i.writer;r&&a.removeClass(r.className,s),o&&a.addClass(o.className,s)}}(o);i.downcastDispatcher.on("attribute:imageStyle:image",r),n.downcastDispatcher.on("attribute:imageStyle:image",r),n.upcastDispatcher.on("element:figure",function(t){const e=t.filter(t=>!t.isDefault);return(t,n,i)=>{if(!n.modelRange)return;const o=n.viewItem,r=Uh(n.modelRange.getItems());if(i.schema.checkAttribute(r,"imageStyle"))for(const t of e)i.consumable.consume(o,{classes:t.className})&&i.writer.setAttribute("imageStyle",t.name,r)}}(o),{priority:"low"}),t.commands.add("imageStyle",new Lg(t,o))}}n(73);class $g extends _d{static get pluginName(){return"ImageStyleUI"}get localizedDefaultStylesTitles(){const t=this.editor.t;return{"Full size image":t("h"),"Side image":t("i"),"Left aligned image":t("j"),"Centered image":t("k"),"Right aligned image":t("l")}}init(){const t=function(t,e){for(const n of t)e[n.title]&&(n.title=e[n.title]);return t}(qg(this.editor.config.get("image.styles")),this.localizedDefaultStylesTitles);for(const e of t)this._createButton(e)}_createButton(t){const e=this.editor,n=`imageStyle:${t.name}`;e.ui.componentFactory.add(n,n=>{const i=e.commands.get("imageStyle"),o=new id(n);return o.set({label:t.title,icon:t.icon,tooltip:!0,isToggleable:!0}),o.bind("isEnabled").to(i,"isEnabled"),o.bind("isOn").to(i,"value",e=>e===t.name),this.listenTo(o,"execute",()=>e.execute("imageStyle",{value:t.name})),o})}}class Gg extends _d{static get requires(){return[Wf]}static get pluginName(){return"WidgetToolbarRepository"}init(){const t=this.editor;if(t.plugins.has("BalloonToolbar")){const e=t.plugins.get("BalloonToolbar");this.listenTo(e,"show",e=>{(function(t){const e=t.getSelectedElement();return!(!e||!au(e))})(t.editing.view.document.selection)&&e.stop()},{priority:"high"})}this._toolbarDefinitions=new Map,this._balloon=this.editor.plugins.get("ContextualBalloon"),this.listenTo(t.ui,"update",()=>{this._updateToolbarsVisibility()}),this.listenTo(t.ui.focusTracker,"change:isFocused",()=>{this._updateToolbarsVisibility()},{priority:"low"})}destroy(){super.destroy();for(const t of this._toolbarDefinitions.values())t.view.destroy()}register(t,{ariaLabel:e,items:n,getRelatedElement:i,balloonClassName:o="ck-toolbar-container"}){const r=this.editor,s=r.t,a=new gd(r.locale);if(a.ariaLabel=e||s("ax"),this._toolbarDefinitions.has(t))throw new Gn.b("widget-toolbar-duplicated: Toolbar with the given id was already added.",this,{toolbarId:t});a.fillFromConfig(n,r.ui.componentFactory),this._toolbarDefinitions.set(t,{view:a,getRelatedElement:i,balloonClassName:o})}_updateToolbarsVisibility(){let t=0,e=null,n=null;for(const i of this._toolbarDefinitions.values()){const o=i.getRelatedElement(this.editor.editing.view.document.selection);if(this.editor.ui.focusTracker.isFocused)if(o){const r=o.getAncestors().length;r>t&&(t=r,e=o,n=i)}else this._isToolbarInBalloon(i)&&this._hideToolbar(i);else this._isToolbarVisible(i)&&this._hideToolbar(i)}n&&this._showToolbar(n,e)}_hideToolbar(t){this._balloon.remove(t.view),this.stopListening(this._balloon,"change:visibleView")}_showToolbar(t,e){this._isToolbarVisible(t)?Qg(this.editor,e):this._isToolbarInBalloon(t)||(this._balloon.add({view:t.view,position:Kg(this.editor,e),balloonClassName:t.balloonClassName}),this.listenTo(this._balloon,"change:visibleView",()=>{for(const t of this._toolbarDefinitions.values())if(this._isToolbarVisible(t)){const e=t.getRelatedElement(this.editor.editing.view.document.selection);Qg(this.editor,e)}}))}_isToolbarVisible(t){return this._balloon.visibleView===t.view}_isToolbarInBalloon(t){return this._balloon.hasView(t.view)}}function Qg(t,e){const n=t.plugins.get("ContextualBalloon"),i=Kg(t,e);n.updatePosition(i)}function Kg(t,e){const n=t.editing.view,i=Vf.defaultPositions;return{target:n.domConverter.mapViewToDom(e),positions:[i.northArrowSouth,i.northArrowSouthWest,i.northArrowSouthEast,i.southArrowNorth,i.southArrowNorthWest,i.southArrowNorthEast]}}class Jg extends Td{constructor(t){super(t),this._childCommands=[]}refresh(){}execute(...t){this._getFirstEnabledCommand().execute(t)}registerChildCommand(t){this._childCommands.push(t),t.on("change:isEnabled",()=>this._checkEnabled()),this._checkEnabled()}_checkEnabled(){this.isEnabled=!!this._getFirstEnabledCommand()}_getFirstEnabledCommand(){return this._childCommands.find(t=>t.isEnabled)}}class Zg extends _d{static get pluginName(){return"IndentEditing"}init(){const t=this.editor;t.commands.add("indent",new Jg(t)),t.commands.add("outdent",new Jg(t))}}var Xg='\n',tm='\n';class em extends _d{static get pluginName(){return"IndentUI"}init(){const t=this.editor,e=t.locale,n=t.t,i="ltr"==e.uiLanguageDirection?Xg:tm,o="ltr"==e.uiLanguageDirection?tm:Xg;this._defineButton("indent",n("q"),i),this._defineButton("outdent",n("r"),o)}_defineButton(t,e,n){const i=this.editor;i.ui.componentFactory.add(t,o=>{const r=i.commands.get(t),s=new id(o);return s.set({label:e,icon:n,tooltip:!0}),s.bind("isOn","isEnabled").to(r,"value","isEnabled"),this.listenTo(s,"execute",()=>i.execute(t)),s})}}class nm extends Xr{constructor(t){super(t),this.domEventType="click"}onDomEvent(t){this.fire(t.type,t)}}n(75);class im extends Ll{constructor(t,e=[]){super(t);const n=t.t;this.focusTracker=new al,this.keystrokes=new Zc,this.urlInputView=this._createUrlInput(),this.saveButtonView=this._createButton(n("bf"),Of,"ck-button-save"),this.saveButtonView.type="submit",this.cancelButtonView=this._createButton(n("bg"),Rf,"ck-button-cancel","cancel"),this._manualDecoratorSwitches=this._createManualDecoratorSwitches(e),this.children=this._createFormChildren(e),this._focusables=new pl,this._focusCycler=new Wl({focusables:this._focusables,focusTracker:this.focusTracker,keystrokeHandler:this.keystrokes,actions:{focusPrevious:"shift + tab",focusNext:"tab"}});const i=["ck","ck-link-form"];e.length&&i.push("ck-link-form_layout-vertical"),this.setTemplate({tag:"form",attributes:{class:i,tabindex:"-1"},children:this.children})}getDecoratorSwitchesState(){return Array.from(this._manualDecoratorSwitches).reduce((t,e)=>(t[e.name]=e.isOn,t),{})}render(){super.render(),Nf({view:this}),[this.urlInputView,...this._manualDecoratorSwitches,this.saveButtonView,this.cancelButtonView].forEach(t=>{this._focusables.add(t),this.focusTracker.add(t.element)}),this.keystrokes.listenTo(this.element)}focus(){this._focusCycler.focusFirst()}_createUrlInput(){const t=this.locale.t,e=new Ef(this.locale,If);return e.label=t("bh"),e.inputView.placeholder="https://example.com",e}_createButton(t,e,n,i){const o=new id(this.locale);return o.set({label:t,icon:e,tooltip:!0}),o.extendTemplate({attributes:{class:n}}),i&&o.delegate("execute").to(this,i),o}_createManualDecoratorSwitches(t){const e=this.createCollection();for(const n of t){const t=new ld(this.locale);t.set({name:n.id,label:n.label,withText:!0}),t.bind("isOn").to(n,"value"),t.on("execute",()=>{n.set("value",!t.isOn)}),e.add(t)}return e}_createFormChildren(t){const e=this.createCollection();if(e.add(this.urlInputView),t.length){const t=new Ll;t.setTemplate({tag:"ul",children:this._manualDecoratorSwitches.map(t=>({tag:"li",children:[t],attributes:{class:["ck","ck-list__item"]}})),attributes:{class:["ck","ck-reset","ck-list"]}}),e.add(t)}return e.add(this.saveButtonView),e.add(this.cancelButtonView),e}}var om='',rm='';n(77);class sm extends Ll{constructor(t){super(t);const e=t.t;this.focusTracker=new al,this.keystrokes=new Zc,this.previewButtonView=this._createPreviewButton(),this.unlinkButtonView=this._createButton(e("bb"),om,"unlink"),this.editButtonView=this._createButton(e("bc"),rm,"edit"),this.set("href"),this._focusables=new pl,this._focusCycler=new Wl({focusables:this._focusables,focusTracker:this.focusTracker,keystrokeHandler:this.keystrokes,actions:{focusPrevious:"shift + tab",focusNext:"tab"}}),this.setTemplate({tag:"div",attributes:{class:["ck","ck-link-actions"],tabindex:"-1"},children:[this.previewButtonView,this.editButtonView,this.unlinkButtonView]})}render(){super.render(),[this.previewButtonView,this.editButtonView,this.unlinkButtonView].forEach(t=>{this._focusables.add(t),this.focusTracker.add(t.element)}),this.keystrokes.listenTo(this.element)}focus(){this._focusCycler.focusFirst()}_createButton(t,e,n){const i=new id(this.locale);return i.set({label:t,icon:e,tooltip:!0}),i.delegate("execute").to(this,n),i}_createPreviewButton(){const t=new id(this.locale),e=this.bindTemplate,n=this.t;return t.set({withText:!0,tooltip:n("bd")}),t.extendTemplate({attributes:{class:["ck","ck-link-actions__preview"],href:e.to("href",t=>t&&Ju(t)),target:"_blank"}}),t.bind("label").to(this,"href",t=>t||n("be")),t.bind("isEnabled").to(this,"href",t=>!!t),t.template.tag="a",t.template.eventListeners={},t}}var am='';const cm="Ctrl+K";class lm extends _d{static get requires(){return[Wf]}static get pluginName(){return"LinkUI"}init(){const t=this.editor;t.editing.view.addObserver(nm),this.actionsView=this._createActionsView(),this.formView=this._createFormView(),this._balloon=t.plugins.get(Wf),this._createToolbarLinkButton(),this._enableUserBalloonInteractions()}destroy(){super.destroy(),this.formView.destroy()}_createActionsView(){const t=this.editor,e=new sm(t.locale),n=t.commands.get("link"),i=t.commands.get("unlink");return e.bind("href").to(n,"value"),e.editButtonView.bind("isEnabled").to(n),e.unlinkButtonView.bind("isEnabled").to(i),this.listenTo(e,"edit",()=>{this._addFormView()}),this.listenTo(e,"unlink",()=>{t.execute("unlink"),this._hideUI()}),e.keystrokes.set("Esc",(t,e)=>{this._hideUI(),e()}),e.keystrokes.set(cm,(t,e)=>{this._addFormView(),e()}),e}_createFormView(){const t=this.editor,e=t.commands.get("link"),n=new im(t.locale,e.manualDecorators);return n.urlInputView.bind("value").to(e,"value"),n.urlInputView.bind("isReadOnly").to(e,"isEnabled",t=>!t),n.saveButtonView.bind("isEnabled").to(e),this.listenTo(n,"submit",()=>{t.execute("link",n.urlInputView.inputView.element.value,n.getDecoratorSwitchesState()),this._closeFormView()}),this.listenTo(n,"cancel",()=>{this._closeFormView()}),n.keystrokes.set("Esc",(t,e)=>{this._closeFormView(),e()}),n}_createToolbarLinkButton(){const t=this.editor,e=t.commands.get("link"),n=t.t;t.keystrokes.set(cm,(t,n)=>{n(),e.isEnabled&&this._showUI(!0)}),t.ui.componentFactory.add("link",t=>{const i=new id(t);return i.isEnabled=!0,i.label=n("as"),i.icon=am,i.keystroke=cm,i.tooltip=!0,i.isToggleable=!0,i.bind("isEnabled").to(e,"isEnabled"),i.bind("isOn").to(e,"value",t=>!!t),this.listenTo(i,"execute",()=>this._showUI(!0)),i})}_enableUserBalloonInteractions(){const t=this.editor.editing.view.document;this.listenTo(t,"click",()=>{this._getSelectedLinkElement()&&this._showUI()}),this.editor.keystrokes.set("Tab",(t,e)=>{this._areActionsVisible&&!this.actionsView.focusTracker.isFocused&&(this.actionsView.focus(),e())},{priority:"high"}),this.editor.keystrokes.set("Esc",(t,e)=>{this._isUIVisible&&(this._hideUI(),e())}),dd({emitter:this.formView,activator:()=>this._isUIInPanel,contextElements:[this._balloon.view.element],callback:()=>this._hideUI()})}_addActionsView(){this._areActionsInPanel||this._balloon.add({view:this.actionsView,position:this._getBalloonPositionData()})}_addFormView(){if(this._isFormInPanel)return;const t=this.editor.commands.get("link");this._balloon.add({view:this.formView,position:this._getBalloonPositionData()}),this._balloon.visibleView===this.formView&&this.formView.urlInputView.select(),this.formView.urlInputView.inputView.element.value=t.value||""}_closeFormView(){const t=this.editor.commands.get("link");t.restoreManualDecoratorStates(),void 0!==t.value?this._removeFormView():this._hideUI()}_removeFormView(){this._isFormInPanel&&(this.formView.saveButtonView.focus(),this._balloon.remove(this.formView),this.editor.editing.view.focus())}_showUI(t=!1){this.editor.commands.get("link").isEnabled&&(this._getSelectedLinkElement()?(this._areActionsVisible?this._addFormView():this._addActionsView(),t&&this._balloon.showStack("main")):(this._addActionsView(),t&&this._balloon.showStack("main"),this._addFormView()),this._startUpdatingUI())}_hideUI(){if(!this._isUIInPanel)return;const t=this.editor;this.stopListening(t.ui,"update"),this.stopListening(this._balloon,"change:visibleView"),t.editing.view.focus(),this._removeFormView(),this._balloon.remove(this.actionsView)}_startUpdatingUI(){const t=this.editor,e=t.editing.view.document;let n=this._getSelectedLinkElement(),i=r();const o=()=>{const t=this._getSelectedLinkElement(),e=r();n&&!t||!n&&e!==i?this._hideUI():this._isUIVisible&&this._balloon.updatePosition(this._getBalloonPositionData()),n=t,i=e};function r(){return e.selection.focus.getAncestors().reverse().find(t=>t.is("element"))}this.listenTo(t.ui,"update",o),this.listenTo(this._balloon,"change:visibleView",o)}get _isFormInPanel(){return this._balloon.hasView(this.formView)}get _areActionsInPanel(){return this._balloon.hasView(this.actionsView)}get _areActionsVisible(){return this._balloon.visibleView===this.actionsView}get _isUIInPanel(){return this._isFormInPanel||this._areActionsInPanel}get _isUIVisible(){return this._balloon.visibleView==this.formView||this._areActionsVisible}_getBalloonPositionData(){const t=this.editor.editing.view,e=t.document,n=this._getSelectedLinkElement();return{target:n?t.domConverter.mapViewToDom(n):t.domConverter.viewRangeToDom(e.selection.getFirstRange())}}_getSelectedLinkElement(){const t=this.editor.editing.view,e=t.document.selection;if(e.isCollapsed)return dm(e.getFirstPosition());{const n=e.getFirstRange().getTrimmed(),i=dm(n.start),o=dm(n.end);return i&&i==o&&t.createRangeIn(i).getTrimmed().isEqual(n)?i:null}}}function dm(t){return t.getAncestors().find(t=>(function(t){return t.is("attributeElement")&&!!t.getCustomProperty("link")})(t))}class hm extends Td{constructor(t,e){super(t),this.type=e}refresh(){this.value=this._getValue(),this.isEnabled=this._checkEnabled()}execute(){const t=this.editor.model,e=t.document,n=Array.from(e.selection.getSelectedBlocks()).filter(e=>fm(e,t.schema)),i=!0===this.value;t.change(t=>{if(i){let e=n[n.length-1].nextSibling,i=Number.POSITIVE_INFINITY,o=[];for(;e&&"listItem"==e.name&&0!==e.getAttribute("listIndent");){const t=e.getAttribute("listIndent");t=n;)r>o.getAttribute("listIndent")&&(r=o.getAttribute("listIndent")),o.getAttribute("listIndent")==r&&t[e?"unshift":"push"](o),o=o[e?"previousSibling":"nextSibling"]}}function fm(t,e){return e.checkChild(t.parent,"listItem")&&!e.isObject(t)}class gm extends Td{constructor(t,e){super(t),this._indentBy="forward"==e?1:-1}refresh(){this.isEnabled=this._checkEnabled()}execute(){const t=this.editor.model,e=t.document;let n=Array.from(e.selection.getSelectedBlocks());t.change(t=>{const e=n[n.length-1];let i=e.nextSibling;for(;i&&"listItem"==i.name&&i.getAttribute("listIndent")>e.getAttribute("listIndent");)n.push(i),i=i.nextSibling;this._indentBy<0&&(n=n.reverse());for(const e of n){const n=e.getAttribute("listIndent")+this._indentBy;n<0?t.rename(e,"paragraph"):t.setAttribute("listIndent",n,e)}})}_checkEnabled(){const t=Uh(this.editor.model.document.selection.getSelectedBlocks());if(!t||!t.is("listItem"))return!1;if(this._indentBy>0){const e=t.getAttribute("listIndent"),n=t.getAttribute("listType");let i=t.previousSibling;for(;i&&i.is("listItem")&&i.getAttribute("listIndent")>=e;){if(i.getAttribute("listIndent")==e)return i.getAttribute("listType")==n;i=i.previousSibling}return!1}return!0}}function mm(t,e){const n=e.mapper,i=e.writer,o="numbered"==t.getAttribute("listType")?"ol":"ul",r=function(t){const e=t.createContainerElement("li");return e.getFillerOffset=vm,e}(i),s=i.createContainerElement(o,null);return i.insert(i.createPositionAt(s,0),r),n.bindElements(t,r),r}function pm(t,e,n,i){const o=e.parent,r=n.mapper,s=n.writer;let a=r.toViewPosition(i.createPositionBefore(t));const c=km(t.previousSibling,{sameIndent:!0,smallerIndent:!0,listIndent:t.getAttribute("listIndent")}),l=t.previousSibling;if(c&&c.getAttribute("listIndent")==t.getAttribute("listIndent")){const t=r.toViewElement(c);a=s.breakContainer(s.createPositionAfter(t))}else a=l&&"listItem"==l.name?r.toViewPosition(i.createPositionAt(l,"end")):r.toViewPosition(i.createPositionBefore(t));if(a=wm(a),s.insert(a,o),l&&"listItem"==l.name){const t=r.toViewElement(l),n=s.createRange(s.createPositionAt(t,0),a).getWalker({ignoreElementEnd:!0});for(const t of n)if(t.item.is("li")){const i=s.breakContainer(s.createPositionBefore(t.item)),o=t.item.parent,r=s.createPositionAt(e,"end");bm(s,r.nodeBefore,r.nodeAfter),s.move(s.createRangeOn(o),r),n.position=i}}else{const n=o.nextSibling;if(n&&(n.is("ul")||n.is("ol"))){let i=null;for(const e of n.getChildren()){const n=r.toModelElement(e);if(!(n&&n.getAttribute("listIndent")>t.getAttribute("listIndent")))break;i=e}i&&(s.breakContainer(s.createPositionAfter(i)),s.move(s.createRangeOn(i.parent),s.createPositionAt(e,"end")))}}bm(s,o,o.nextSibling),bm(s,o.previousSibling,o)}function bm(t,e,n){return!e||!n||"ul"!=e.name&&"ol"!=e.name?null:e.name!=n.name||e.getAttribute("class")!==n.getAttribute("class")?null:t.mergeContainers(t.createPositionAfter(e))}function wm(t){return t.getLastMatchingPosition(t=>t.item.is("uiElement"))}function km(t,e){const n=!!e.sameIndent,i=!!e.smallerIndent,o=e.listIndent;let r=t;for(;r&&"listItem"==r.name;){const t=r.getAttribute("listIndent");if(n&&o==t||i&&o>t)return r;r=r.previousSibling}return null}function _m(t,e,n,i){t.ui.componentFactory.add(e,o=>{const r=t.commands.get(e),s=new id(o);return s.set({label:n,icon:i,tooltip:!0,isToggleable:!0}),s.bind("isOn","isEnabled").to(r,"value","isEnabled"),s.on("execute",()=>t.execute(e)),s})}function vm(){const t=!this.isEmpty&&("ul"==this.getChild(0).name||"ol"==this.getChild(0).name);return this.isEmpty||t?0:xi.call(this)}function ym(t){return(e,n,i)=>{const o=i.consumable;if(!o.test(n.item,"insert")||!o.test(n.item,"attribute:listType")||!o.test(n.item,"attribute:listIndent"))return;o.consume(n.item,"insert"),o.consume(n.item,"attribute:listType"),o.consume(n.item,"attribute:listIndent");const r=n.item;pm(r,mm(r,i),i,t)}}function xm(t,e,n){if(!n.consumable.consume(e.item,"attribute:listType"))return;const i=n.mapper.toViewElement(e.item),o=n.writer;o.breakContainer(o.createPositionBefore(i)),o.breakContainer(o.createPositionAfter(i));const r=i.parent,s="numbered"==e.attributeNewValue?"ol":"ul";o.rename(s,r)}function Am(t,e,n){const i=n.mapper.toViewElement(e.item).parent,o=n.writer;bm(o,i,i.nextSibling),bm(o,i.previousSibling,i);for(const t of e.item.getChildren())n.consumable.consume(t,"insert")}function Tm(t,e,n){if("listItem"!=e.item.name){let t=n.mapper.toViewPosition(e.range.start);const i=n.writer,o=[];for(;("ul"==t.parent.name||"ol"==t.parent.name)&&"li"==(t=i.breakContainer(t)).parent.name;){const e=t,n=i.createPositionAt(t.parent,"end");if(!e.isEqual(n)){const t=i.remove(i.createRange(e,n));o.push(t)}t=i.createPositionAfter(t.parent)}if(o.length>0){for(let e=0;e0){const e=bm(i,n,n.nextSibling);e&&e.parent==n&&t.offset--}}bm(i,t.nodeBefore,t.nodeAfter)}}}function Cm(t,e,n){const i=n.mapper.toViewPosition(e.position),o=i.nodeBefore,r=i.nodeAfter;bm(n.writer,o,r)}function Pm(t,e,n){if(n.consumable.consume(e.viewItem,{name:!0})){const t=n.writer,i=t.createElement("listItem"),o=function(t){let e=0,n=t.parent;for(;n;){if(n.is("li"))e++;else{const t=n.previousSibling;t&&t.is("li")&&e++}n=n.parent}return e}(e.viewItem);t.setAttribute("listIndent",o,i);const r=e.viewItem.parent&&"ol"==e.viewItem.parent.name?"numbered":"bulleted";t.setAttribute("listType",r,i);const s=n.splitToAllowedParent(i,e.modelCursor);if(!s)return;t.insert(i,s.position);const a=function(t,e,n){const{writer:i,schema:o}=n;let r=i.createPositionAfter(t);for(const s of e)if("ul"==s.name||"ol"==s.name)r=n.convertItem(s,r).modelCursor;else{const e=n.convertItem(s,i.createPositionAt(t,"end")),a=e.modelRange.start.nodeAfter,c=a&&a.is("element")&&!o.checkChild(t,a.name);c&&(t=e.modelCursor.parent.is("listItem")?e.modelCursor.parent:Nm(e.modelCursor),r=i.createPositionAfter(t))}return r}(i,e.viewItem.getChildren(),n);e.modelRange=t.createRange(e.modelCursor,a),s.cursorParent?e.modelCursor=t.createPositionAt(s.cursorParent,0):e.modelCursor=e.modelRange.end}}function Sm(t,e,n){if(n.consumable.test(e.viewItem,{name:!0})){const t=Array.from(e.viewItem.getChildren());for(const e of t){!(e.is("li")||Rm(e))&&e._remove()}}}function Mm(t,e,n){if(n.consumable.test(e.viewItem,{name:!0})){if(0===e.viewItem.childCount)return;const t=[...e.viewItem.getChildren()];let n=!1,i=!0;for(const e of t)n&&!Rm(e)&&e._remove(),e.is("text")?(i&&(e._data=e.data.replace(/^\s+/,"")),e.nextSibling&&!Rm(e.nextSibling)||(e._data=e.data.replace(/\s+$/,""))):Rm(e)&&(n=!0),i=!1}}function Em(t){return(e,n)=>{if(n.isPhantom)return;const i=n.modelPosition.nodeBefore;if(i&&i.is("listItem")){const e=n.mapper.toViewElement(i),o=e.getAncestors().find(Rm),r=t.createPositionAt(e,0).getWalker();for(const t of r){if("elementStart"==t.type&&t.item.is("li")){n.viewPosition=t.previousPosition;break}if("elementEnd"==t.type&&t.item==o){n.viewPosition=t.nextPosition;break}}}}}function Im(t,[e,n]){let i,o=e.is("documentFragment")?e.getChild(0):e;if(i=n?this.createSelection(n):this.document.selection,o&&o.is("listItem")){const t=i.getFirstPosition();let e=null;if(t.parent.is("listItem")?e=t.parent:t.nodeBefore&&t.nodeBefore.is("listItem")&&(e=t.nodeBefore),e){const t=e.getAttribute("listIndent");if(t>0)for(;o&&o.is("listItem");)o._setAttribute("listIndent",o.getAttribute("listIndent")+t),o=o.nextSibling}}}function Nm(t){const e=new Hs({startPosition:t});let n;do{n=e.next()}while(!n.value.item.is("listItem"));return n.value.item}function Om(t,e,n,i,o,r){const s=km(e.nodeBefore,{sameIndent:!0,smallerIndent:!0,listIndent:t,foo:"b"}),a=o.mapper,c=o.writer,l=s?s.getAttribute("listIndent"):null;let d;if(s)if(l==t){const t=a.toViewElement(s).parent;d=c.createPositionAfter(t)}else{const t=r.createPositionAt(s,"end");d=a.toViewPosition(t)}else d=n;d=wm(d);for(const t of[...i.getChildren()])Rm(t)&&(d=c.move(c.createRangeOn(t),d).end,bm(c,t,t.nextSibling),bm(c,t.previousSibling,t))}function Rm(t){return t.is("ol")||t.is("ul")}class Dm extends _d{static get pluginName(){return"ListEditing"}static get requires(){return[_g]}init(){const t=this.editor;t.model.schema.register("listItem",{inheritAllFrom:"$block",allowAttributes:["listType","listIndent"]});const e=t.data,n=t.editing;t.model.document.registerPostFixer(e=>(function(t,e){const n=t.document.differ.getChanges(),i=new Map;let o=!1;for(const i of n)if("insert"==i.type&&"listItem"==i.name)r(i.position);else if("insert"==i.type&&"listItem"!=i.name){if("$text"!=i.name){const n=i.position.nodeAfter;n.hasAttribute("listIndent")&&(e.removeAttribute("listIndent",n),o=!0),n.hasAttribute("listType")&&(e.removeAttribute("listType",n),o=!0);for(const e of Array.from(t.createRangeIn(n)).filter(t=>t.item.is("listItem")))r(e.previousPosition)}r(i.position.getShiftedBy(i.length))}else"remove"==i.type&&"listItem"==i.name?r(i.position):"attribute"==i.type&&"listIndent"==i.attributeKey?r(i.range.start):"attribute"==i.type&&"listType"==i.attributeKey&&r(i.range.start);for(const t of i.values())s(t),a(t);return o;function r(t){const e=t.nodeBefore;if(e&&e.is("listItem")){let n=e;if(i.has(n))return;for(;n.previousSibling&&n.previousSibling.is("listItem");)if(n=n.previousSibling,i.has(n))return;i.set(t.nodeBefore,n)}else{const e=t.nodeAfter;e&&e.is("listItem")&&i.set(e,e)}}function s(t){let n=0,i=null;for(;t&&t.is("listItem");){const r=t.getAttribute("listIndent");if(r>n){let s;null===i?(i=r-n,s=n):(i>r&&(i=r),s=r-i),e.setAttribute("listIndent",s,t),o=!0}else i=null,n=t.getAttribute("listIndent")+1;t=t.nextSibling}}function a(t){let n=[],i=null;for(;t&&t.is("listItem");){const r=t.getAttribute("listIndent");if(i&&i.getAttribute("listIndent")>r&&(n=n.slice(0,r+1)),0!=r)if(n[r]){const i=n[r];t.getAttribute("listType")!=i&&(e.setAttribute("listType",i,t),o=!0)}else n[r]=t.getAttribute("listType");i=t,t=t.nextSibling}}})(t.model,e)),n.mapper.registerViewToModelLength("li",Lm),e.mapper.registerViewToModelLength("li",Lm),n.mapper.on("modelToViewPosition",Em(n.view)),n.mapper.on("viewToModelPosition",function(t){return(e,n)=>{const i=n.viewPosition,o=i.parent,r=n.mapper;if("ul"==o.name||"ol"==o.name){if(i.isAtEnd){const e=r.toModelElement(i.nodeBefore),o=r.getModelLength(i.nodeBefore);n.modelPosition=t.createPositionBefore(e).getShiftedBy(o)}else{const e=r.toModelElement(i.nodeAfter);n.modelPosition=t.createPositionBefore(e)}e.stop()}else if("li"==o.name&&i.nodeBefore&&("ul"==i.nodeBefore.name||"ol"==i.nodeBefore.name)){const s=r.toModelElement(o);let a=1,c=i.nodeBefore;for(;c&&Rm(c);)a+=r.getModelLength(c),c=c.previousSibling;n.modelPosition=t.createPositionBefore(s).getShiftedBy(a),e.stop()}}}(t.model)),e.mapper.on("modelToViewPosition",Em(n.view)),n.downcastDispatcher.on("insert",Tm,{priority:"high"}),n.downcastDispatcher.on("insert:listItem",ym(t.model)),e.downcastDispatcher.on("insert",Tm,{priority:"high"}),e.downcastDispatcher.on("insert:listItem",ym(t.model)),n.downcastDispatcher.on("attribute:listType:listItem",xm,{priority:"high"}),n.downcastDispatcher.on("attribute:listType:listItem",Am,{priority:"low"}),n.downcastDispatcher.on("attribute:listIndent:listItem",function(t){return(e,n,i)=>{if(!i.consumable.consume(n.item,"attribute:listIndent"))return;const o=i.mapper.toViewElement(n.item),r=i.writer;r.breakContainer(r.createPositionBefore(o)),r.breakContainer(r.createPositionAfter(o));const s=o.parent,a=s.previousSibling,c=r.createRangeOn(s);r.remove(c),a&&a.nextSibling&&bm(r,a,a.nextSibling),Om(n.attributeOldValue+1,n.range.start,c.start,o,i,t),pm(n.item,o,i,t);for(const t of n.item.getChildren())i.consumable.consume(t,"insert")}}(t.model)),n.downcastDispatcher.on("remove:listItem",function(t){return(e,n,i)=>{const o=i.mapper.toViewPosition(n.position).getLastMatchingPosition(t=>!t.item.is("li")).nodeAfter,r=i.writer;r.breakContainer(r.createPositionBefore(o)),r.breakContainer(r.createPositionAfter(o));const s=o.parent,a=s.previousSibling,c=r.createRangeOn(s),l=r.remove(c);a&&a.nextSibling&&bm(r,a,a.nextSibling),Om(i.mapper.toModelElement(o).getAttribute("listIndent")+1,n.position,c.start,o,i,t);for(const t of r.createRangeIn(l).getItems())i.mapper.unbindViewElement(t);e.stop()}}(t.model)),n.downcastDispatcher.on("remove",Cm,{priority:"low"}),e.upcastDispatcher.on("element:ul",Sm,{priority:"high"}),e.upcastDispatcher.on("element:ol",Sm,{priority:"high"}),e.upcastDispatcher.on("element:li",Mm,{priority:"high"}),e.upcastDispatcher.on("element:li",Pm),t.model.on("insertContent",Im,{priority:"high"}),t.commands.add("numberedList",new hm(t,"numbered")),t.commands.add("bulletedList",new hm(t,"bulleted")),t.commands.add("indentList",new gm(t,"forward")),t.commands.add("outdentList",new gm(t,"backward"));const i=n.view.document;this.listenTo(i,"enter",(t,e)=>{const n=this.editor.model.document,i=n.selection.getLastPosition().parent;n.selection.isCollapsed&&"listItem"==i.name&&i.isEmpty&&(this.editor.execute("outdentList"),e.preventDefault(),t.stop())}),this.listenTo(i,"delete",(t,e)=>{if("backward"!==e.direction)return;const n=this.editor.model.document.selection;if(!n.isCollapsed)return;const i=n.getFirstPosition();if(!i.isAtStart)return;const o=i.parent;"listItem"===o.name&&(o.previousSibling&&"listItem"===o.previousSibling.name||(this.editor.execute("outdentList"),e.preventDefault(),t.stop()))},{priority:"high"});const o=t=>(e,n)=>{this.editor.commands.get(t).isEnabled&&(this.editor.execute(t),n())};t.keystrokes.set("Tab",o("indentList")),t.keystrokes.set("Shift+Tab",o("outdentList"))}afterInit(){const t=this.editor.commands,e=t.get("indent"),n=t.get("outdent");e&&e.registerChildCommand(t.get("indentList")),n&&n.registerChildCommand(t.get("outdentList"))}}function Lm(t){let e=1;for(const n of t.getChildren())if("ul"==n.name||"ol"==n.name)for(const t of n.getChildren())e+=Lm(t);return e}var jm='',Vm='';class zm extends _d{init(){const t=this.editor.t;_m(this.editor,"numberedList",t("o"),jm),_m(this.editor,"bulletedList",t("p"),Vm)}}function Bm(t,e){return t=>{t.on("attribute:url:media",n)};function n(n,i,o){if(!o.consumable.consume(i.item,n.name))return;const r=i.attributeNewValue,s=o.writer,a=o.mapper.toViewElement(i.item);s.remove(s.createRangeIn(a));const c=t.getMediaViewElement(s,r,e);s.insert(s.createPositionAt(a,0),c)}}function Fm(t,e,n,i){const o=t.createContainerElement("figure",{class:"media"});return o.getFillerOffset=qm,t.insert(t.createPositionAt(o,0),e.getMediaViewElement(t,n,i)),o}function Um(t){const e=t.getSelectedElement();return e&&e.is("media")?e:null}function Hm(t,e,n){t.change(i=>{const o=i.createElement("media",{url:e});t.insertContent(o,n),i.setSelection(o,"on")})}function qm(){return null}class Wm extends Td{refresh(){const t=this.editor.model,e=t.document.selection,n=t.schema,i=e.getFirstPosition(),o=Um(e);let r=i.parent;r!=r.root&&(r=r.parent),this.value=o?o.getAttribute("url"):null,this.isEnabled=n.checkChild(r,"media")}execute(t){const e=this.editor.model,n=e.document.selection,i=Um(n);if(i)e.change(e=>{e.setAttribute("url",t,i)});else{const i=hu(n,e);Hm(e,t,i)}}}var Ym='';const $m="0 0 64 42";class Gm{constructor(t,e){const n=e.providers,i=e.extraProviders||[],o=new Set(e.removeProviders),r=n.concat(i).filter(t=>{const e=t.name;return e?!o.has(e):(console.warn(Object(Gn.a)("media-embed-no-provider-name: The configured media provider has no name and cannot be used."),{provider:t}),!1)});this.locale=t,this.providerDefinitions=r}hasMedia(t){return!!this._getMedia(t)}getMediaViewElement(t,e,n){return this._getMedia(e).getViewElement(t,n)}_getMedia(t){if(!t)return new Qm(this.locale);t=t.trim();for(const e of this.providerDefinitions){const n=e.html;let i=e.url;Array.isArray(i)||(i=[i]);for(const e of i){const i=this._getUrlMatches(t,e);if(i)return new Qm(this.locale,t,i,n)}}return null}_getUrlMatches(t,e){let n=t.match(e);if(n)return n;let i=t.replace(/^https?:\/\//,"");return(n=i.match(e))?n:(n=(i=i.replace(/^www\./,"")).match(e))||null}}class Qm{constructor(t,e,n,i){this.url=this._getValidUrl(e),this._t=t.t,this._match=n,this._previewRenderer=i}getViewElement(t,e){const n={};if(e.renderForEditingView||e.renderMediaPreview&&this.url&&this._previewRenderer){this.url&&(n["data-oembed-url"]=this.url),e.renderForEditingView&&(n.class="ck-media__wrapper");const i=this._getPreviewHtml(e);return t.createUIElement("div",n,function(t){const e=this.toDomElement(t);return e.innerHTML=i,e})}return this.url&&(n.url=this.url),t.createEmptyElement("oembed",n)}_getPreviewHtml(t){return this._previewRenderer?this._previewRenderer(this._match):this.url&&t.renderForEditingView?this._getPlaceholderHtml():""}_getPlaceholderHtml(){const t=new nd,e=new ed;return t.text=this._t("Open media in new tab"),e.content=Ym,e.viewBox=$m,new wl({tag:"div",attributes:{class:"ck ck-reset_all ck-media__placeholder"},children:[{tag:"div",attributes:{class:"ck-media__placeholder__icon"},children:[e]},{tag:"a",attributes:{class:"ck-media__placeholder__url",target:"_blank",rel:"noopener noreferrer",href:this.url},children:[{tag:"span",attributes:{class:"ck-media__placeholder__url__text"},children:[this.url]},t]}]}).render().outerHTML}_getValidUrl(t){return t?t.match(/^https?/)?t:"https://"+t:null}}n(79);class Km extends _d{static get pluginName(){return"MediaEmbedEditing"}constructor(t){super(t),t.config.define("mediaEmbed",{providers:[{name:"dailymotion",url:/^dailymotion\.com\/video\/(\w+)/,html:t=>{return'
'+`
'}},{name:"spotify",url:[/^open\.spotify\.com\/(artist\/\w+)/,/^open\.spotify\.com\/(album\/\w+)/,/^open\.spotify\.com\/(track\/\w+)/],html:t=>{return'
'+`
'}},{name:"youtube",url:[/^(?:m\.)?youtube\.com\/watch\?v=([\w-]+)/,/^(?:m\.)?youtube\.com\/v\/([\w-]+)/,/^youtube\.com\/embed\/([\w-]+)/,/^youtu\.be\/([\w-]+)/],html:t=>{return'
'+`
'}},{name:"vimeo",url:[/^vimeo\.com\/(\d+)/,/^vimeo\.com\/[^/]+\/[^/]+\/video\/(\d+)/,/^vimeo\.com\/album\/[^/]+\/video\/(\d+)/,/^vimeo\.com\/channels\/[^/]+\/(\d+)/,/^vimeo\.com\/groups\/[^/]+\/videos\/(\d+)/,/^vimeo\.com\/ondemand\/[^/]+\/(\d+)/,/^player\.vimeo\.com\/video\/(\d+)/],html:t=>{return'
'+`
'}},{name:"instagram",url:/^instagram\.com\/p\/(\w+)/},{name:"twitter",url:/^twitter\.com/},{name:"googleMaps",url:/^google\.com\/maps/},{name:"flickr",url:/^flickr\.com/},{name:"facebook",url:/^facebook\.com/}]}),this.registry=new Gm(t.locale,t.config.get("mediaEmbed"))}init(){const t=this.editor,e=t.model.schema,n=t.t,i=t.conversion,o=t.config.get("mediaEmbed.previewsInData"),r=this.registry;t.commands.add("mediaEmbed",new Wm(t)),e.register("media",{isObject:!0,isBlock:!0,allowWhere:"$block",allowAttributes:["url"]}),i.for("dataDowncast").elementToElement({model:"media",view:(t,e)=>{const n=t.getAttribute("url");return Fm(e,r,n,{renderMediaPreview:n&&o})}}),i.for("dataDowncast").add(Bm(r,{renderMediaPreview:o})),i.for("editingDowncast").elementToElement({model:"media",view:(t,e)=>{const i=t.getAttribute("url");return function(t,e,n){return e.setCustomProperty("media",!0,t),cu(t,e,{label:n})}(Fm(e,r,i,{renderForEditingView:!0}),e,n("ap"))}}),i.for("editingDowncast").add(Bm(r,{renderForEditingView:!0})),i.for("upcast").elementToElement({view:{name:"oembed",attributes:{url:!0}},model:(t,e)=>{const n=t.getAttribute("url");if(r.hasMedia(n))return e.createElement("media",{url:n})}}).elementToElement({view:{name:"div",attributes:{"data-oembed-url":!0}},model:(t,e)=>{const n=t.getAttribute("data-oembed-url");if(r.hasMedia(n))return e.createElement("media",{url:n})}})}}const Jm=/^(?:http(s)?:\/\/)?[\w.-]+(?:\.[\w.-]+)+[\w\-._~:/?#[\]@!$&'()*+,;=]+$/;class Zm extends _d{static get requires(){return[Ad,ph]}static get pluginName(){return"AutoMediaEmbed"}constructor(t){super(t),this._timeoutId=null,this._positionToInsert=null}init(){const t=this.editor,e=t.model.document;this.listenTo(t.plugins.get(Ad),"inputTransformation",()=>{const t=e.selection.getFirstRange(),n=Lc.fromPosition(t.start);n.stickiness="toPrevious";const i=Lc.fromPosition(t.end);i.stickiness="toNext",e.once("change:data",()=>{this._embedMediaBetweenPositions(n,i),n.detach(),i.detach()},{priority:"high"})}),t.commands.get("undo").on("execute",()=>{this._timeoutId&&(tr.window.clearTimeout(this._timeoutId),this._positionToInsert.detach(),this._timeoutId=null,this._positionToInsert=null)},{priority:"high"})}_embedMediaBetweenPositions(t,e){const n=this.editor,i=n.plugins.get(Km).registry,o=new oa(t,e),r=o.getWalker({ignoreElementEnd:!0});let s="";for(const t of r)t.item.is("textProxy")&&(s+=t.item.data);if(!(s=s.trim()).match(Jm))return;if(!i.hasMedia(s))return;n.commands.get("mediaEmbed").isEnabled&&(this._positionToInsert=Lc.fromPosition(t),this._timeoutId=tr.window.setTimeout(()=>{n.model.change(t=>{let e;this._timeoutId=null,t.remove(o),"$graveyard"!==this._positionToInsert.root.rootName&&(e=this._positionToInsert),Hm(n.model,s,e),this._positionToInsert.detach(),this._positionToInsert=null})},100))}}n(81);class Xm extends Ll{constructor(t,e){super(e);const n=e.t;this.focusTracker=new al,this.keystrokes=new Zc,this.urlInputView=this._createUrlInput(),this.saveButtonView=this._createButton(n("bf"),Of,"ck-button-save"),this.saveButtonView.type="submit",this.cancelButtonView=this._createButton(n("bg"),Rf,"ck-button-cancel","cancel"),this._focusables=new pl,this._focusCycler=new Wl({focusables:this._focusables,focusTracker:this.focusTracker,keystrokeHandler:this.keystrokes,actions:{focusPrevious:"shift + tab",focusNext:"tab"}}),this._validators=t,this.setTemplate({tag:"form",attributes:{class:["ck","ck-media-form"],tabindex:"-1"},children:[this.urlInputView,this.saveButtonView,this.cancelButtonView]})}render(){super.render(),Nf({view:this}),[this.urlInputView,this.saveButtonView,this.cancelButtonView].forEach(t=>{this._focusables.add(t),this.focusTracker.add(t.element)}),this.keystrokes.listenTo(this.element);const t=t=>t.stopPropagation();this.keystrokes.set("arrowright",t),this.keystrokes.set("arrowleft",t),this.keystrokes.set("arrowup",t),this.keystrokes.set("arrowdown",t),this.listenTo(this.urlInputView.element,"selectstart",(t,e)=>{e.stopPropagation()},{priority:"high"})}focus(){this._focusCycler.focusFirst()}get url(){return this.urlInputView.inputView.element.value.trim()}set url(t){this.urlInputView.inputView.element.value=t.trim()}isValid(){this.resetFormStatus();for(const t of this._validators){const e=t(this);if(e)return this.urlInputView.errorText=e,!1}return!0}resetFormStatus(){this.urlInputView.errorText=null,this.urlInputView.infoText=this._urlInputViewInfoDefault}_createUrlInput(){const t=this.locale.t,e=new Ef(this.locale,If),n=e.inputView;return this._urlInputViewInfoDefault=t("br"),this._urlInputViewInfoTip=t("bs"),e.label=t("bt"),e.infoText=this._urlInputViewInfoDefault,n.placeholder="https://example.com",n.on("input",()=>{e.infoText=n.element.value?this._urlInputViewInfoTip:this._urlInputViewInfoDefault}),e}_createButton(t,e,n,i){const o=new id(this.locale);return o.set({label:t,icon:e,tooltip:!0}),o.extendTemplate({attributes:{class:n}}),i&&o.delegate("execute").to(this,i),o}}var tp='';class ep extends _d{static get requires(){return[Km]}static get pluginName(){return"MediaEmbedUI"}init(){const t=this.editor,e=t.commands.get("mediaEmbed"),n=t.plugins.get(Km).registry;this.form=new Xm(function(t,e){return[e=>{if(!e.url.length)return t("an")},n=>{if(!e.hasMedia(n.url))return t("ao")}]}(t.t,n),t.locale),t.ui.componentFactory.add("mediaEmbed",n=>{const i=hd(n);return this._setUpDropdown(i,this.form,e,t),this._setUpForm(this.form,i,e),i})}_setUpDropdown(t,e,n){const i=this.editor,o=i.t,r=t.buttonView;function s(){i.editing.view.focus(),t.isOpen=!1}t.bind("isEnabled").to(n),t.panelView.children.add(e),r.set({label:o("am"),icon:tp,tooltip:!0}),r.on("open",()=>{e.url=n.value||"",e.urlInputView.select(),e.focus()},{priority:"low"}),t.on("submit",()=>{e.isValid()&&(i.execute("mediaEmbed",e.url),s())}),t.on("change:isOpen",()=>e.resetFormStatus()),t.on("cancel",()=>s())}_setUpForm(t,e,n){t.delegate("submit","cancel").to(e),t.urlInputView.bind("value").to(n,"value"),t.urlInputView.bind("isReadOnly").to(n,"isEnabled",t=>!t),t.saveButtonView.bind("isEnabled").to(n)}}n(83);function np(t,e){if(!t.childCount)return;const n=new ug,i=function(t,e){const n=e.createRangeIn(t),i=new bi({name:/^p|h\d+$/,styles:{"mso-list":/.*/}}),o=[];for(const t of n)if("elementStart"===t.type&&i.match(t.item)){const e=ip(t.item);o.push({element:t.item,id:e.id,order:e.order,indent:e.indent})}return o}(t,n);if(!i.length)return;let o=null;i.forEach((t,r)=>{if(!o||function(t,e){if(t.id!==e.id)return!0;const n=e.element.previousSibling;if(!n)return!0;return!function(t){return t.is("ol")||t.is("ul")}(n)}(i[r-1],t)){const i=function(t,e){const n=/mso-level-number-format:([^;]*);/gi,i=new RegExp(`@list l${t.id}:level${t.indent}\\s*({[^}]*)`,"gi").exec(e);let o="decimal";if(i&&i[1]){const t=n.exec(i[1]);t&&t[1]&&(o=t[1].trim())}return{type:"bullet"!==o&&"image"!==o?"ol":"ul",style:o}}(t,e);o=function(t,e,n){const i=new ki(t.type),o=e.parent.getChildIndex(e);return n.insertChild(o,i,e.parent),i}(i,t.element,n)}const s=function(t,e){return function(t,e){const n=new bi({name:"span",styles:{"mso-list":"Ignore"}}),i=e.createRangeIn(t);for(const t of i)"elementStart"===t.type&&n.match(t.item)&&e.remove(t.item)}(t,e),e.rename("li",t)}(t.element,n);n.appendChild(s,o)})}function ip(t){const e={},n=t.getStyle("mso-list");return n&&(e.id=parseInt(n.match(/(^|\s+)l(\d+)/i)[2]),e.order=parseInt(n.match(/\s*lfo(\d+)/i)[1]),e.indent=parseInt(n.match(/\s*level(\d+)/i)[1])),e}const op=/id=("|')docs-internal-guid-[-0-9a-f]+("|')/i;class rp{isActive(t){return op.test(t)}execute(t){const e=new ug;!function(t,e){for(const n of t.getChildren())if(n.is("b")&&"normal"===n.getStyle("font-weight")){const i=t.getChildIndex(n);e.remove(n),e.insertChild(i,n.getChildren(),t)}}(t.content,e),function(t,e){for(const n of e.createRangeIn(t)){const t=n.item;if(t.is("li")){const n=t.getChild(0);n.is("p")&&e.unwrapElement(n)}}}(t.content,e)}}function sp(t){return t.replace(/(\s+)<\/span>/g,(t,e)=>1===e.length?" ":Array(e.length+1).join("  ").substr(0,e.length))}function ap(t){const e=new DOMParser,n=function(t){return sp(sp(t)).replace(/([\s]*?)[\r\n]+(\s*<\/span>)/g,"$1$2").replace(/<\/span>/g,"").replace(/ <\//g," <\/o:p>/g," ").replace(/( |\u00A0)<\/o:p>/g,"").replace(/>(\s*[\r\n]\s*)<")}(function(t){const e=t.match(/<\/body>(.*?)(<\/html>|$)/);e&&e[1]&&(t=t.slice(0,e.index)+t.slice(e.index).replace(e[1],""));return t}(t=t.replace(/

abc

\n\t\t\t//\n\t\t\tif ( isAttribute && this._wrapAttributeElement( wrapElement, child ) ) {\n\t\t\t\twrapPositions.push( new Position( parent, i ) );\n\t\t\t}\n\t\t\t//\n\t\t\t// Wrap the child if it is not an attribute element or if it is an attribute element that should be inside\n\t\t\t// `wrapElement` (due to priority).\n\t\t\t//\n\t\t\t//

abc

-->

abc

\n\t\t\t//

abc

-->

abc

\n\t\t\t//\n\t\t\telse if ( isText || isEmpty || isUI || ( isAttribute && shouldABeOutsideB( wrapElement, child ) ) ) {\n\t\t\t\t// Clone attribute.\n\t\t\t\tconst newAttribute = wrapElement._clone();\n\n\t\t\t\t// Wrap current node with new attribute.\n\t\t\t\tchild._remove();\n\t\t\t\tnewAttribute._appendChild( child );\n\n\t\t\t\tparent._insertChild( i, newAttribute );\n\t\t\t\tthis._addToClonedElementsGroup( newAttribute );\n\n\t\t\t\twrapPositions.push( new Position( parent, i ) );\n\t\t\t}\n\t\t\t//\n\t\t\t// If other nested attribute is found and it wasn't wrapped (see above), continue wrapping inside it.\n\t\t\t//\n\t\t\t//

abc

-->

abc

\n\t\t\t//\n\t\t\telse if ( isAttribute ) {\n\t\t\t\tthis._wrapChildren( child, 0, child.childCount, wrapElement );\n\t\t\t}\n\n\t\t\ti++;\n\t\t}\n\n\t\t// Merge at each wrap.\n\t\tlet offsetChange = 0;\n\n\t\tfor ( const position of wrapPositions ) {\n\t\t\tposition.offset -= offsetChange;\n\n\t\t\t// Do not merge with elements outside selected children.\n\t\t\tif ( position.offset == startOffset ) {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\tconst newPosition = this.mergeAttributes( position );\n\n\t\t\t// If nodes were merged - other merge offsets will change.\n\t\t\tif ( !newPosition.isEqual( position ) ) {\n\t\t\t\toffsetChange++;\n\t\t\t\tendOffset--;\n\t\t\t}\n\t\t}\n\n\t\treturn Range._createFromParentsAndOffsets( parent, startOffset, parent, endOffset );\n\t}\n\n\t/**\n\t * Unwraps children from provided `unwrapElement`. Only children contained in `parent` element between\n\t * `startOffset` and `endOffset` will be unwrapped.\n\t *\n\t * @private\n\t * @param {module:engine/view/element~Element} parent\n\t * @param {Number} startOffset\n\t * @param {Number} endOffset\n\t * @param {module:engine/view/element~Element} unwrapElement\n\t */\n\t_unwrapChildren( parent, startOffset, endOffset, unwrapElement ) {\n\t\tlet i = startOffset;\n\t\tconst unwrapPositions = [];\n\n\t\t// Iterate over each element between provided offsets inside parent.\n\t\t// We don't use tree walker or range iterator because we will be removing and merging potentially multiple nodes,\n\t\t// so it could get messy. It is safer to it manually in this case.\n\t\twhile ( i < endOffset ) {\n\t\t\tconst child = parent.getChild( i );\n\n\t\t\t// Skip all text nodes. There should be no container element's here either.\n\t\t\tif ( !child.is( 'attributeElement' ) ) {\n\t\t\t\ti++;\n\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\t//\n\t\t\t// (In all examples, assume that `unwrapElement` is `` element.)\n\t\t\t//\n\t\t\t// If the child is similar to the given attribute element, unwrap it - it will be completely removed.\n\t\t\t//\n\t\t\t//

abcxyz

-->

abcxyz

\n\t\t\t//\n\t\t\tif ( child.isSimilar( unwrapElement ) ) {\n\t\t\t\tconst unwrapped = child.getChildren();\n\t\t\t\tconst count = child.childCount;\n\n\t\t\t\t// Replace wrapper element with its children\n\t\t\t\tchild._remove();\n\t\t\t\tparent._insertChild( i, unwrapped );\n\n\t\t\t\tthis._removeFromClonedElementsGroup( child );\n\n\t\t\t\t// Save start and end position of moved items.\n\t\t\t\tunwrapPositions.push(\n\t\t\t\t\tnew Position( parent, i ),\n\t\t\t\t\tnew Position( parent, i + count )\n\t\t\t\t);\n\n\t\t\t\t// Skip elements that were unwrapped. Assuming there won't be another element to unwrap in child elements.\n\t\t\t\ti += count;\n\t\t\t\tendOffset += count - 1;\n\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\t//\n\t\t\t// If the child is not similar but is an attribute element, try partial unwrapping - remove the same attributes/styles/classes.\n\t\t\t// Partial unwrapping will happen only if the elements have the same name.\n\t\t\t//\n\t\t\t//

abcxyz

-->

abcxyz

\n\t\t\t//

abcxyz

-->

abcxyz

\n\t\t\t//\n\t\t\tif ( this._unwrapAttributeElement( unwrapElement, child ) ) {\n\t\t\t\tunwrapPositions.push(\n\t\t\t\t\tnew Position( parent, i ),\n\t\t\t\t\tnew Position( parent, i + 1 )\n\t\t\t\t);\n\n\t\t\t\ti++;\n\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\t//\n\t\t\t// If other nested attribute is found, look through it's children for elements to unwrap.\n\t\t\t//\n\t\t\t//

abc

-->

abc

\n\t\t\t//\n\t\t\tthis._unwrapChildren( child, 0, child.childCount, unwrapElement );\n\n\t\t\ti++;\n\t\t}\n\n\t\t// Merge at each unwrap.\n\t\tlet offsetChange = 0;\n\n\t\tfor ( const position of unwrapPositions ) {\n\t\t\tposition.offset -= offsetChange;\n\n\t\t\t// Do not merge with elements outside selected children.\n\t\t\tif ( position.offset == startOffset || position.offset == endOffset ) {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\tconst newPosition = this.mergeAttributes( position );\n\n\t\t\t// If nodes were merged - other merge offsets will change.\n\t\t\tif ( !newPosition.isEqual( position ) ) {\n\t\t\t\toffsetChange++;\n\t\t\t\tendOffset--;\n\t\t\t}\n\t\t}\n\n\t\treturn Range._createFromParentsAndOffsets( parent, startOffset, parent, endOffset );\n\t}\n\n\t/**\n\t * Helper function for `view.writer.wrap`. Wraps range with provided attribute element.\n\t * This method will also merge newly added attribute element with its siblings whenever possible.\n\t *\n\t * Throws {@link module:utils/ckeditorerror~CKEditorError} `view-writer-wrap-invalid-attribute` when passed attribute element is not\n\t * an instance of {@link module:engine/view/attributeelement~AttributeElement AttributeElement}.\n\t *\n\t * @private\n\t * @param {module:engine/view/range~Range} range\n\t * @param {module:engine/view/attributeelement~AttributeElement} attribute\n\t * @returns {module:engine/view/range~Range} New range after wrapping, spanning over wrapping attribute element.\n\t */\n\t_wrapRange( range, attribute ) {\n\t\t// Break attributes at range start and end.\n\t\tconst { start: breakStart, end: breakEnd } = this._breakAttributesRange( range, true );\n\t\tconst parentContainer = breakStart.parent;\n\n\t\t// Wrap all children with attribute.\n\t\tconst newRange = this._wrapChildren( parentContainer, breakStart.offset, breakEnd.offset, attribute );\n\n\t\t// Merge attributes at the both ends and return a new range.\n\t\tconst start = this.mergeAttributes( newRange.start );\n\n\t\t// If start position was merged - move end position back.\n\t\tif ( !start.isEqual( newRange.start ) ) {\n\t\t\tnewRange.end.offset--;\n\t\t}\n\t\tconst end = this.mergeAttributes( newRange.end );\n\n\t\treturn new Range( start, end );\n\t}\n\n\t/**\n\t * Helper function for {@link #wrap}. Wraps position with provided attribute element.\n\t * This method will also merge newly added attribute element with its siblings whenever possible.\n\t *\n\t * Throws {@link module:utils/ckeditorerror~CKEditorError} `view-writer-wrap-invalid-attribute` when passed attribute element is not\n\t * an instance of {@link module:engine/view/attributeelement~AttributeElement AttributeElement}.\n\t *\n\t * @private\n\t * @param {module:engine/view/position~Position} position\n\t * @param {module:engine/view/attributeelement~AttributeElement} attribute\n\t * @returns {module:engine/view/position~Position} New position after wrapping.\n\t */\n\t_wrapPosition( position, attribute ) {\n\t\t// Return same position when trying to wrap with attribute similar to position parent.\n\t\tif ( attribute.isSimilar( position.parent ) ) {\n\t\t\treturn movePositionToTextNode( position.clone() );\n\t\t}\n\n\t\t// When position is inside text node - break it and place new position between two text nodes.\n\t\tif ( position.parent.is( 'text' ) ) {\n\t\t\tposition = breakTextNode( position );\n\t\t}\n\n\t\t// Create fake element that will represent position, and will not be merged with other attributes.\n\t\tconst fakePosition = this.createAttributeElement();\n\t\tfakePosition._priority = Number.POSITIVE_INFINITY;\n\t\tfakePosition.isSimilar = () => false;\n\n\t\t// Insert fake element in position location.\n\t\tposition.parent._insertChild( position.offset, fakePosition );\n\n\t\t// Range around inserted fake attribute element.\n\t\tconst wrapRange = new Range( position, position.getShiftedBy( 1 ) );\n\n\t\t// Wrap fake element with attribute (it will also merge if possible).\n\t\tthis.wrap( wrapRange, attribute );\n\n\t\t// Remove fake element and place new position there.\n\t\tconst newPosition = new Position( fakePosition.parent, fakePosition.index );\n\t\tfakePosition._remove();\n\n\t\t// If position is placed between text nodes - merge them and return position inside.\n\t\tconst nodeBefore = newPosition.nodeBefore;\n\t\tconst nodeAfter = newPosition.nodeAfter;\n\n\t\tif ( nodeBefore instanceof Text && nodeAfter instanceof Text ) {\n\t\t\treturn mergeTextNodes( nodeBefore, nodeAfter );\n\t\t}\n\n\t\t// If position is next to text node - move position inside.\n\t\treturn movePositionToTextNode( newPosition );\n\t}\n\n\t/**\n\t * \tWraps one {@link module:engine/view/attributeelement~AttributeElement AttributeElement} into another by\n\t * \tmerging them if possible. When merging is possible - all attributes, styles and classes are moved from wrapper\n\t * \telement to element being wrapped.\n\t *\n\t * \t@private\n\t * \t@param {module:engine/view/attributeelement~AttributeElement} wrapper Wrapper AttributeElement.\n\t * \t@param {module:engine/view/attributeelement~AttributeElement} toWrap AttributeElement to wrap using wrapper element.\n\t * \t@returns {Boolean} Returns `true` if elements are merged.\n\t */\n\t_wrapAttributeElement( wrapper, toWrap ) {\n\t\tif ( !canBeJoined( wrapper, toWrap ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Can't merge if name or priority differs.\n\t\tif ( wrapper.name !== toWrap.name || wrapper.priority !== toWrap.priority ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Check if attributes can be merged.\n\t\tfor ( const key of wrapper.getAttributeKeys() ) {\n\t\t\t// Classes and styles should be checked separately.\n\t\t\tif ( key === 'class' || key === 'style' ) {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\t// If some attributes are different we cannot wrap.\n\t\t\tif ( toWrap.hasAttribute( key ) && toWrap.getAttribute( key ) !== wrapper.getAttribute( key ) ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\t// Check if styles can be merged.\n\t\tfor ( const key of wrapper.getStyleNames() ) {\n\t\t\tif ( toWrap.hasStyle( key ) && toWrap.getStyle( key ) !== wrapper.getStyle( key ) ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\t// Move all attributes/classes/styles from wrapper to wrapped AttributeElement.\n\t\tfor ( const key of wrapper.getAttributeKeys() ) {\n\t\t\t// Classes and styles should be checked separately.\n\t\t\tif ( key === 'class' || key === 'style' ) {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\t// Move only these attributes that are not present - other are similar.\n\t\t\tif ( !toWrap.hasAttribute( key ) ) {\n\t\t\t\tthis.setAttribute( key, wrapper.getAttribute( key ), toWrap );\n\t\t\t}\n\t\t}\n\n\t\tfor ( const key of wrapper.getStyleNames() ) {\n\t\t\tif ( !toWrap.hasStyle( key ) ) {\n\t\t\t\tthis.setStyle( key, wrapper.getStyle( key ), toWrap );\n\t\t\t}\n\t\t}\n\n\t\tfor ( const key of wrapper.getClassNames() ) {\n\t\t\tif ( !toWrap.hasClass( key ) ) {\n\t\t\t\tthis.addClass( key, toWrap );\n\t\t\t}\n\t\t}\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Unwraps {@link module:engine/view/attributeelement~AttributeElement AttributeElement} from another by removing\n\t * corresponding attributes, classes and styles. All attributes, classes and styles from wrapper should be present\n\t * inside element being unwrapped.\n\t *\n\t * @private\n\t * @param {module:engine/view/attributeelement~AttributeElement} wrapper Wrapper AttributeElement.\n\t * @param {module:engine/view/attributeelement~AttributeElement} toUnwrap AttributeElement to unwrap using wrapper element.\n\t * @returns {Boolean} Returns `true` if elements are unwrapped.\n\t **/\n\t_unwrapAttributeElement( wrapper, toUnwrap ) {\n\t\tif ( !canBeJoined( wrapper, toUnwrap ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Can't unwrap if name or priority differs.\n\t\tif ( wrapper.name !== toUnwrap.name || wrapper.priority !== toUnwrap.priority ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Check if AttributeElement has all wrapper attributes.\n\t\tfor ( const key of wrapper.getAttributeKeys() ) {\n\t\t\t// Classes and styles should be checked separately.\n\t\t\tif ( key === 'class' || key === 'style' ) {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\t// If some attributes are missing or different we cannot unwrap.\n\t\t\tif ( !toUnwrap.hasAttribute( key ) || toUnwrap.getAttribute( key ) !== wrapper.getAttribute( key ) ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\t// Check if AttributeElement has all wrapper classes.\n\t\tif ( !toUnwrap.hasClass( ...wrapper.getClassNames() ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Check if AttributeElement has all wrapper styles.\n\t\tfor ( const key of wrapper.getStyleNames() ) {\n\t\t\t// If some styles are missing or different we cannot unwrap.\n\t\t\tif ( !toUnwrap.hasStyle( key ) || toUnwrap.getStyle( key ) !== wrapper.getStyle( key ) ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\t// Remove all wrapper's attributes from unwrapped element.\n\t\tfor ( const key of wrapper.getAttributeKeys() ) {\n\t\t\t// Classes and styles should be checked separately.\n\t\t\tif ( key === 'class' || key === 'style' ) {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\tthis.removeAttribute( key, toUnwrap );\n\t\t}\n\n\t\t// Remove all wrapper's classes from unwrapped element.\n\t\tthis.removeClass( Array.from( wrapper.getClassNames() ), toUnwrap );\n\n\t\t// Remove all wrapper's styles from unwrapped element.\n\t\tthis.removeStyle( Array.from( wrapper.getStyleNames() ), toUnwrap );\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Helper function used by other `DowncastWriter` methods. Breaks attribute elements at the boundaries of given range.\n\t *\n\t * @private\n\t * @param {module:engine/view/range~Range} range Range which `start` and `end` positions will be used to break attributes.\n\t * @param {Boolean} [forceSplitText=false] If set to `true`, will break text nodes even if they are directly in container element.\n\t * This behavior will result in incorrect view state, but is needed by other view writing methods which then fixes view state.\n\t * @returns {module:engine/view/range~Range} New range with located at break positions.\n\t */\n\t_breakAttributesRange( range, forceSplitText = false ) {\n\t\tconst rangeStart = range.start;\n\t\tconst rangeEnd = range.end;\n\n\t\tvalidateRangeContainer( range, this.document );\n\n\t\t// Break at the collapsed position. Return new collapsed range.\n\t\tif ( range.isCollapsed ) {\n\t\t\tconst position = this._breakAttributes( range.start, forceSplitText );\n\n\t\t\treturn new Range( position, position );\n\t\t}\n\n\t\tconst breakEnd = this._breakAttributes( rangeEnd, forceSplitText );\n\t\tconst count = breakEnd.parent.childCount;\n\t\tconst breakStart = this._breakAttributes( rangeStart, forceSplitText );\n\n\t\t// Calculate new break end offset.\n\t\tbreakEnd.offset += breakEnd.parent.childCount - count;\n\n\t\treturn new Range( breakStart, breakEnd );\n\t}\n\n\t/**\n\t * Helper function used by other `DowncastWriter` methods. Breaks attribute elements at given position.\n\t *\n\t * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-cannot-break-empty-element` when break position\n\t * is placed inside {@link module:engine/view/emptyelement~EmptyElement EmptyElement}.\n\t *\n\t * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-cannot-break-ui-element` when break position\n\t * is placed inside {@link module:engine/view/uielement~UIElement UIElement}.\n\t *\n\t * @private\n\t * @param {module:engine/view/position~Position} position Position where to break attributes.\n\t * @param {Boolean} [forceSplitText=false] If set to `true`, will break text nodes even if they are directly in container element.\n\t * This behavior will result in incorrect view state, but is needed by other view writing methods which then fixes view state.\n\t * @returns {module:engine/view/position~Position} New position after breaking the attributes.\n\t */\n\t_breakAttributes( position, forceSplitText = false ) {\n\t\tconst positionOffset = position.offset;\n\t\tconst positionParent = position.parent;\n\n\t\t// If position is placed inside EmptyElement - throw an exception as we cannot break inside.\n\t\tif ( position.parent.is( 'emptyElement' ) ) {\n\t\t\t/**\n\t\t\t * Cannot break inside EmptyElement instance.\n\t\t\t *\n\t\t\t * @error view-writer-cannot-break-empty-element\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-writer-cannot-break-empty-element', this.document );\n\t\t}\n\n\t\t// If position is placed inside UIElement - throw an exception as we cannot break inside.\n\t\tif ( position.parent.is( 'uiElement' ) ) {\n\t\t\t/**\n\t\t\t * Cannot break inside UIElement instance.\n\t\t\t *\n\t\t\t * @error view-writer-cannot-break-ui-element\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-writer-cannot-break-ui-element', this.document );\n\t\t}\n\n\t\t// There are no attributes to break and text nodes breaking is not forced.\n\t\tif ( !forceSplitText && positionParent.is( 'text' ) && isContainerOrFragment( positionParent.parent ) ) {\n\t\t\treturn position.clone();\n\t\t}\n\n\t\t// Position's parent is container, so no attributes to break.\n\t\tif ( isContainerOrFragment( positionParent ) ) {\n\t\t\treturn position.clone();\n\t\t}\n\n\t\t// Break text and start again in new position.\n\t\tif ( positionParent.is( 'text' ) ) {\n\t\t\treturn this._breakAttributes( breakTextNode( position ), forceSplitText );\n\t\t}\n\n\t\tconst length = positionParent.childCount;\n\n\t\t//

foobar{}

\n\t\t//

foobar[]

\n\t\t//

foobar[]

\n\t\tif ( positionOffset == length ) {\n\t\t\tconst newPosition = new Position( positionParent.parent, positionParent.index + 1 );\n\n\t\t\treturn this._breakAttributes( newPosition, forceSplitText );\n\t\t} else {\n\t\t\t//

foo{}bar

\n\t\t\t//

foo[]bar

\n\t\t\t//

foo{}bar

\n\t\t\tif ( positionOffset === 0 ) {\n\t\t\t\tconst newPosition = new Position( positionParent.parent, positionParent.index );\n\n\t\t\t\treturn this._breakAttributes( newPosition, forceSplitText );\n\t\t\t}\n\t\t\t//

foob{}ar

\n\t\t\t//

foob[]ar

\n\t\t\t//

foob[]ar

\n\t\t\t//

foob[]ar

\n\t\t\telse {\n\t\t\t\tconst offsetAfter = positionParent.index + 1;\n\n\t\t\t\t// Break element.\n\t\t\t\tconst clonedNode = positionParent._clone();\n\n\t\t\t\t// Insert cloned node to position's parent node.\n\t\t\t\tpositionParent.parent._insertChild( offsetAfter, clonedNode );\n\t\t\t\tthis._addToClonedElementsGroup( clonedNode );\n\n\t\t\t\t// Get nodes to move.\n\t\t\t\tconst count = positionParent.childCount - positionOffset;\n\t\t\t\tconst nodesToMove = positionParent._removeChildren( positionOffset, count );\n\n\t\t\t\t// Move nodes to cloned node.\n\t\t\t\tclonedNode._appendChild( nodesToMove );\n\n\t\t\t\t// Create new position to work on.\n\t\t\t\tconst newPosition = new Position( positionParent.parent, offsetAfter );\n\n\t\t\t\treturn this._breakAttributes( newPosition, forceSplitText );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Stores the information that an {@link module:engine/view/attributeelement~AttributeElement attribute element} was\n\t * added to the tree. Saves the reference to the group in the given element and updates the group, so other elements\n\t * from the group now keep a reference to the given attribute element.\n\t *\n\t * The clones group can be obtained using {@link module:engine/view/attributeelement~AttributeElement#getElementsWithSameId}.\n\t *\n\t * Does nothing if added element has no {@link module:engine/view/attributeelement~AttributeElement#id id}.\n\t *\n\t * @private\n\t * @param {module:engine/view/attributeelement~AttributeElement} element Attribute element to save.\n\t */\n\t_addToClonedElementsGroup( element ) {\n\t\t// Add only if the element is in document tree.\n\t\tif ( !element.root.is( 'rootElement' ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Traverse the element's children recursively to find other attribute elements that also might got inserted.\n\t\t// The loop is at the beginning so we can make fast returns later in the code.\n\t\tif ( element.is( 'element' ) ) {\n\t\t\tfor ( const child of element.getChildren() ) {\n\t\t\t\tthis._addToClonedElementsGroup( child );\n\t\t\t}\n\t\t}\n\n\t\tconst id = element.id;\n\n\t\tif ( !id ) {\n\t\t\treturn;\n\t\t}\n\n\t\tlet group = this._cloneGroups.get( id );\n\n\t\tif ( !group ) {\n\t\t\tgroup = new Set();\n\t\t\tthis._cloneGroups.set( id, group );\n\t\t}\n\n\t\tgroup.add( element );\n\t\telement._clonesGroup = group;\n\t}\n\n\t/**\n\t * Removes all the information about the given {@link module:engine/view/attributeelement~AttributeElement attribute element}\n\t * from its clones group.\n\t *\n\t * Keep in mind, that the element will still keep a reference to the group (but the group will not keep a reference to it).\n\t * This allows to reference the whole group even if the element was already removed from the tree.\n\t *\n\t * Does nothing if the element has no {@link module:engine/view/attributeelement~AttributeElement#id id}.\n\t *\n\t * @private\n\t * @param {module:engine/view/attributeelement~AttributeElement} element Attribute element to remove.\n\t */\n\t_removeFromClonedElementsGroup( element ) {\n\t\t// Traverse the element's children recursively to find other attribute elements that also got removed.\n\t\t// The loop is at the beginning so we can make fast returns later in the code.\n\t\tif ( element.is( 'element' ) ) {\n\t\t\tfor ( const child of element.getChildren() ) {\n\t\t\t\tthis._removeFromClonedElementsGroup( child );\n\t\t\t}\n\t\t}\n\n\t\tconst id = element.id;\n\n\t\tif ( !id ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst group = this._cloneGroups.get( id );\n\n\t\tif ( !group ) {\n\t\t\treturn;\n\t\t}\n\n\t\tgroup.delete( element );\n\t\t// Not removing group from element on purpose!\n\t\t// If other parts of code have reference to this element, they will be able to get references to other elements from the group.\n\t}\n}\n\n// Helper function for `view.writer.wrap`. Checks if given element has any children that are not ui elements.\nfunction _hasNonUiChildren( parent ) {\n\treturn Array.from( parent.getChildren() ).some( child => !child.is( 'uiElement' ) );\n}\n\n/**\n * Attribute element need to be instance of attribute element.\n *\n * @error view-writer-wrap-invalid-attribute\n */\n\n// Returns first parent container of specified {@link module:engine/view/position~Position Position}.\n// Position's parent node is checked as first, then next parents are checked.\n// Note that {@link module:engine/view/documentfragment~DocumentFragment DocumentFragment} is treated like a container.\n//\n// @param {module:engine/view/position~Position} position Position used as a start point to locate parent container.\n// @returns {module:engine/view/containerelement~ContainerElement|module:engine/view/documentfragment~DocumentFragment|undefined}\n// Parent container element or `undefined` if container is not found.\nfunction getParentContainer( position ) {\n\tlet parent = position.parent;\n\n\twhile ( !isContainerOrFragment( parent ) ) {\n\t\tif ( !parent ) {\n\t\t\treturn undefined;\n\t\t}\n\t\tparent = parent.parent;\n\t}\n\n\treturn parent;\n}\n\n// Checks if first {@link module:engine/view/attributeelement~AttributeElement AttributeElement} provided to the function\n// can be wrapped otuside second element. It is done by comparing elements'\n// {@link module:engine/view/attributeelement~AttributeElement#priority priorities}, if both have same priority\n// {@link module:engine/view/element~Element#getIdentity identities} are compared.\n//\n// @param {module:engine/view/attributeelement~AttributeElement} a\n// @param {module:engine/view/attributeelement~AttributeElement} b\n// @returns {Boolean}\nfunction shouldABeOutsideB( a, b ) {\n\tif ( a.priority < b.priority ) {\n\t\treturn true;\n\t} else if ( a.priority > b.priority ) {\n\t\treturn false;\n\t}\n\n\t// When priorities are equal and names are different - use identities.\n\treturn a.getIdentity() < b.getIdentity();\n}\n\n// Returns new position that is moved to near text node. Returns same position if there is no text node before of after\n// specified position.\n//\n//\t\t

foo[]

->

foo{}

\n//\t\t

[]foo

->

{}foo

\n//\n// @param {module:engine/view/position~Position} position\n// @returns {module:engine/view/position~Position} Position located inside text node or same position if there is no text nodes\n// before or after position location.\nfunction movePositionToTextNode( position ) {\n\tconst nodeBefore = position.nodeBefore;\n\n\tif ( nodeBefore && nodeBefore.is( 'text' ) ) {\n\t\treturn new Position( nodeBefore, nodeBefore.data.length );\n\t}\n\n\tconst nodeAfter = position.nodeAfter;\n\n\tif ( nodeAfter && nodeAfter.is( 'text' ) ) {\n\t\treturn new Position( nodeAfter, 0 );\n\t}\n\n\treturn position;\n}\n\n// Breaks text node into two text nodes when possible.\n//\n//\t\t

foo{}bar

->

foo[]bar

\n//\t\t

{}foobar

->

[]foobar

\n//\t\t

foobar{}

->

foobar[]

\n//\n// @param {module:engine/view/position~Position} position Position that need to be placed inside text node.\n// @returns {module:engine/view/position~Position} New position after breaking text node.\nfunction breakTextNode( position ) {\n\tif ( position.offset == position.parent.data.length ) {\n\t\treturn new Position( position.parent.parent, position.parent.index + 1 );\n\t}\n\n\tif ( position.offset === 0 ) {\n\t\treturn new Position( position.parent.parent, position.parent.index );\n\t}\n\n\t// Get part of the text that need to be moved.\n\tconst textToMove = position.parent.data.slice( position.offset );\n\n\t// Leave rest of the text in position's parent.\n\tposition.parent._data = position.parent.data.slice( 0, position.offset );\n\n\t// Insert new text node after position's parent text node.\n\tposition.parent.parent._insertChild( position.parent.index + 1, new Text( textToMove ) );\n\n\t// Return new position between two newly created text nodes.\n\treturn new Position( position.parent.parent, position.parent.index + 1 );\n}\n\n// Merges two text nodes into first node. Removes second node and returns merge position.\n//\n// @param {module:engine/view/text~Text} t1 First text node to merge. Data from second text node will be moved at the end of\n// this text node.\n// @param {module:engine/view/text~Text} t2 Second text node to merge. This node will be removed after merging.\n// @returns {module:engine/view/position~Position} Position after merging text nodes.\nfunction mergeTextNodes( t1, t2 ) {\n\t// Merge text data into first text node and remove second one.\n\tconst nodeBeforeLength = t1.data.length;\n\tt1._data += t2.data;\n\tt2._remove();\n\n\treturn new Position( t1, nodeBeforeLength );\n}\n\n// Checks if provided nodes are valid to insert. Checks if each node is an instance of\n// {@link module:engine/view/text~Text Text} or {@link module:engine/view/attributeelement~AttributeElement AttributeElement},\n// {@link module:engine/view/containerelement~ContainerElement ContainerElement},\n// {@link module:engine/view/emptyelement~EmptyElement EmptyElement} or\n// {@link module:engine/view/uielement~UIElement UIElement}.\n//\n// Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-insert-invalid-node` when nodes to insert\n// contains instances that are not {@link module:engine/view/text~Text Texts},\n// {@link module:engine/view/emptyelement~EmptyElement EmptyElements},\n// {@link module:engine/view/uielement~UIElement UIElements},\n// {@link module:engine/view/attributeelement~AttributeElement AttributeElements} or\n// {@link module:engine/view/containerelement~ContainerElement ContainerElements}.\n//\n// @param Iterable. nodes\n// @param {Object} errorContext\nfunction validateNodesToInsert( nodes, errorContext ) {\n\tfor ( const node of nodes ) {\n\t\tif ( !validNodesToInsert.some( ( validNode => node instanceof validNode ) ) ) { // eslint-disable-line no-use-before-define\n\t\t\t/**\n\t\t\t * Inserted nodes should be valid to insert. of {@link module:engine/view/attributeelement~AttributeElement AttributeElement},\n\t\t\t * {@link module:engine/view/containerelement~ContainerElement ContainerElement},\n\t\t\t * {@link module:engine/view/emptyelement~EmptyElement EmptyElement},\n\t\t\t * {@link module:engine/view/uielement~UIElement UIElement}, {@link module:engine/view/text~Text Text}.\n\t\t\t *\n\t\t\t * @error view-writer-insert-invalid-node\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-writer-insert-invalid-node', errorContext );\n\t\t}\n\n\t\tif ( !node.is( 'text' ) ) {\n\t\t\tvalidateNodesToInsert( node.getChildren(), errorContext );\n\t\t}\n\t}\n}\n\nconst validNodesToInsert = [ Text, AttributeElement, ContainerElement, EmptyElement, UIElement ];\n\n// Checks if node is ContainerElement or DocumentFragment, because in most cases they should be treated the same way.\n//\n// @param {module:engine/view/node~Node} node\n// @returns {Boolean} Returns `true` if node is instance of ContainerElement or DocumentFragment.\nfunction isContainerOrFragment( node ) {\n\treturn node && ( node.is( 'containerElement' ) || node.is( 'documentFragment' ) );\n}\n\n// Checks if {@link module:engine/view/range~Range#start range start} and {@link module:engine/view/range~Range#end range end} are placed\n// inside same {@link module:engine/view/containerelement~ContainerElement container element}.\n// Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-invalid-range-container` when validation fails.\n//\n// @param {module:engine/view/range~Range} range\n// @param {Object} errorContext\nfunction validateRangeContainer( range, errorContext ) {\n\tconst startContainer = getParentContainer( range.start );\n\tconst endContainer = getParentContainer( range.end );\n\n\tif ( !startContainer || !endContainer || startContainer !== endContainer ) {\n\t\t/**\n\t\t * Range container is invalid. This can happen if {@link module:engine/view/range~Range#start range start} and\n\t\t * {@link module:engine/view/range~Range#end range end} positions are not placed inside same container or\n\t\t * parent container for these positions cannot be found.\n\t\t *\n\t\t * @error view-writer-invalid-range-container\n\t\t */\n\n\t\tthrow new CKEditorError( 'view-writer-invalid-range-container', errorContext );\n\t}\n}\n\n// Checks if two attribute elements can be joined together. Elements can be joined together if, and only if\n// they do not have ids specified.\n//\n// @private\n// @param {module:engine/view/element~Element} a\n// @param {module:engine/view/element~Element} b\n// @returns {Boolean}\nfunction canBeJoined( a, b ) {\n\treturn a.id === null && b.id === null;\n}\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module utils/dom/istext\n */\n\n/**\n * Checks if the object is a native DOM Text node.\n *\n * @param {*} obj\n * @returns {Boolean}\n */\nexport default function isText( obj ) {\n\treturn Object.prototype.toString.call( obj ) == '[object Text]';\n}\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\nimport { keyCodes } from '@ckeditor/ckeditor5-utils/src/keyboard';\nimport isText from '@ckeditor/ckeditor5-utils/src/dom/istext';\n\n/**\n * Set of utils related to block and inline fillers handling.\n *\n * Browsers do not allow to put caret in elements which does not have height. Because of it, we need to fill all\n * empty elements which should be selectable with elements or characters called \"fillers\". Unfortunately there is no one\n * universal filler, this is why two types are uses:\n *\n * * Block filler is an element which fill block elements, like `

`. CKEditor uses `
` as a block filler during the editing,\n * as browsers do natively. So instead of an empty `

` there will be `


`. The advantage of block filler is that\n * it is transparent for the selection, so when the caret is before the `
` and user presses right arrow he will be\n * moved to the next paragraph, not after the `
`. The disadvantage is that it breaks a block, so it can not be used\n * in the middle of a line of text. The {@link module:engine/view/filler~BR_FILLER `
` filler} can be replaced with any other\n * character in the data output, for instance {@link module:engine/view/filler~NBSP_FILLER non-breaking space}.\n *\n * * Inline filler is a filler which does not break a line of text, so it can be used inside the text, for instance in the empty\n * `` surrendered by text: `foobar`, if we want to put the caret there. CKEditor uses a sequence of the zero-width\n * spaces as an {@link module:engine/view/filler~INLINE_FILLER inline filler} having the predetermined\n * {@link module:engine/view/filler~INLINE_FILLER_LENGTH length}. A sequence is used, instead of a single character to\n * avoid treating random zero-width spaces as the inline filler. Disadvantage of the inline filler is that it is not\n * transparent for the selection. The arrow key moves the caret between zero-width spaces characters, so the additional\n * code is needed to handle the caret.\n *\n * Both inline and block fillers are handled by the {@link module:engine/view/renderer~Renderer renderer} and are not present in the\n * view.\n *\n * @module engine/view/filler\n */\n\n/**\n * Non-breaking space filler creator. This is a function which creates ` ` text node.\n * It defines how the filler is created.\n *\n * @see module:engine/view/filler~BR_FILLER\n * @function\n */\nexport const NBSP_FILLER = domDocument => domDocument.createTextNode( '\\u00A0' );\n\n/**\n * `
` filler creator. This is a function which creates `
` element.\n * It defines how the filler is created.\n *\n * @see module:engine/view/filler~NBSP_FILLER\n * @function\n */\nexport const BR_FILLER = domDocument => {\n\tconst fillerBr = domDocument.createElement( 'br' );\n\tfillerBr.dataset.ckeFiller = true;\n\n\treturn fillerBr;\n};\n\n/**\n * Length of the {@link module:engine/view/filler~INLINE_FILLER INLINE_FILLER}.\n */\nexport const INLINE_FILLER_LENGTH = 7;\n\n/**\n * Inline filler which is a sequence of the zero width spaces.\n */\nexport const INLINE_FILLER = ( () => {\n\tlet inlineFiller = '';\n\n\tfor ( let i = 0; i < INLINE_FILLER_LENGTH; i++ ) {\n\t\tinlineFiller += '\\u200b';\n\t}\n\n\treturn inlineFiller;\n} )(); // Usu IIF so the INLINE_FILLER appears as a constant in the docs.\n\n/**\n * Checks if the node is a text node which starts with the {@link module:engine/view/filler~INLINE_FILLER inline filler}.\n *\n *\t\tstartsWithFiller( document.createTextNode( INLINE_FILLER ) ); // true\n *\t\tstartsWithFiller( document.createTextNode( INLINE_FILLER + 'foo' ) ); // true\n *\t\tstartsWithFiller( document.createTextNode( 'foo' ) ); // false\n *\t\tstartsWithFiller( document.createElement( 'p' ) ); // false\n *\n * @param {Node} domNode DOM node.\n * @returns {Boolean} True if the text node starts with the {@link module:engine/view/filler~INLINE_FILLER inline filler}.\n */\nexport function startsWithFiller( domNode ) {\n\treturn isText( domNode ) && ( domNode.data.substr( 0, INLINE_FILLER_LENGTH ) === INLINE_FILLER );\n}\n\n/**\n * Checks if the text node contains only the {@link module:engine/view/filler~INLINE_FILLER inline filler}.\n *\n *\t\tisInlineFiller( document.createTextNode( INLINE_FILLER ) ); // true\n *\t\tisInlineFiller( document.createTextNode( INLINE_FILLER + 'foo' ) ); // false\n *\n * @param {Text} domText DOM text node.\n * @returns {Boolean} True if the text node contains only the {@link module:engine/view/filler~INLINE_FILLER inline filler}.\n */\nexport function isInlineFiller( domText ) {\n\treturn domText.data.length == INLINE_FILLER_LENGTH && startsWithFiller( domText );\n}\n\n/**\n * Get string data from the text node, removing an {@link module:engine/view/filler~INLINE_FILLER inline filler} from it,\n * if text node contains it.\n *\n *\t\tgetDataWithoutFiller( document.createTextNode( INLINE_FILLER + 'foo' ) ) == 'foo' // true\n *\t\tgetDataWithoutFiller( document.createTextNode( 'foo' ) ) == 'foo' // true\n *\n * @param {Text} domText DOM text node, possible with inline filler.\n * @returns {String} Data without filler.\n */\nexport function getDataWithoutFiller( domText ) {\n\tif ( startsWithFiller( domText ) ) {\n\t\treturn domText.data.slice( INLINE_FILLER_LENGTH );\n\t} else {\n\t\treturn domText.data;\n\t}\n}\n\n/**\n * Assign key observer which move cursor from the end of the inline filler to the beginning of it when\n * the left arrow is pressed, so the filler does not break navigation.\n *\n * @param {module:engine/view/view~View} view View controller instance we should inject quirks handling on.\n */\nexport function injectQuirksHandling( view ) {\n\tview.document.on( 'keydown', jumpOverInlineFiller );\n}\n\n// Move cursor from the end of the inline filler to the beginning of it when, so the filler does not break navigation.\nfunction jumpOverInlineFiller( evt, data ) {\n\tif ( data.keyCode == keyCodes.arrowleft ) {\n\t\tconst domSelection = data.domTarget.ownerDocument.defaultView.getSelection();\n\n\t\tif ( domSelection.rangeCount == 1 && domSelection.getRangeAt( 0 ).collapsed ) {\n\t\t\tconst domParent = domSelection.getRangeAt( 0 ).startContainer;\n\t\t\tconst domOffset = domSelection.getRangeAt( 0 ).startOffset;\n\n\t\t\tif ( startsWithFiller( domParent ) && domOffset <= INLINE_FILLER_LENGTH ) {\n\t\t\t\tdomSelection.collapse( domParent, 0 );\n\t\t\t}\n\t\t}\n\t}\n}\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module utils/fastdiff\n */\n\n/**\n * Finds positions of the first and last change in the given string/array and generates a set of changes:\n *\n *\t\tfastDiff( '12a', '12xyza' );\n *\t\t// [ { index: 2, type: 'insert', values: [ 'x', 'y', 'z' ] } ]\n *\n *\t\tfastDiff( '12a', '12aa' );\n *\t\t// [ { index: 3, type: 'insert', values: [ 'a' ] } ]\n *\n *\t\tfastDiff( '12xyza', '12a' );\n *\t\t// [ { index: 2, type: 'delete', howMany: 3 } ]\n *\n *\t\tfastDiff( [ '1', '2', 'a', 'a' ], [ '1', '2', 'a' ] );\n *\t\t// [ { index: 3, type: 'delete', howMany: 1 } ]\n *\n *\t\tfastDiff( [ '1', '2', 'a', 'b', 'c', '3' ], [ '2', 'a', 'b' ] );\n *\t\t// [ { index: 0, type: 'insert', values: [ '2', 'a', 'b' ] }, { index: 3, type: 'delete', howMany: 6 } ]\n *\n * Passed arrays can contain any type of data, however to compare them correctly custom comparator function\n * should be passed as a third parameter:\n *\n *\t\tfastDiff( [ { value: 1 }, { value: 2 } ], [ { value: 1 }, { value: 3 } ], ( a, b ) => {\n *\t\t\treturn a.value === b.value;\n *\t\t} );\n *\t\t// [ { index: 1, type: 'insert', values: [ { value: 3 } ] }, { index: 2, type: 'delete', howMany: 1 } ]\n *\n * The resulted set of changes can be applied to the input in order to transform it into the output, for example:\n *\n *\t\tlet input = '12abc3';\n *\t\tconst output = '2ab';\n *\t\tconst changes = fastDiff( input, output );\n *\n *\t\tchanges.forEach( change => {\n *\t\t\tif ( change.type == 'insert' ) {\n *\t\t\t\tinput = input.substring( 0, change.index ) + change.values.join( '' ) + input.substring( change.index );\n *\t\t\t} else if ( change.type == 'delete' ) {\n *\t\t\t\tinput = input.substring( 0, change.index ) + input.substring( change.index + change.howMany );\n *\t\t\t}\n *\t\t} );\n *\n *\t\t// input equals output now\n *\n * or in case of arrays:\n *\n *\t\tlet input = [ '1', '2', 'a', 'b', 'c', '3' ];\n *\t\tconst output = [ '2', 'a', 'b' ];\n *\t\tconst changes = fastDiff( input, output );\n *\n *\t\tchanges.forEach( change => {\n *\t\t\tif ( change.type == 'insert' ) {\n *\t\t\t\tinput = input.slice( 0, change.index ).concat( change.values, input.slice( change.index ) );\n *\t\t\t} else if ( change.type == 'delete' ) {\n *\t\t\t\tinput = input.slice( 0, change.index ).concat( input.slice( change.index + change.howMany ) );\n *\t\t\t}\n *\t\t} );\n *\n *\t\t// input equals output now\n *\n * By passing `true` as the fourth parameter (`atomicChanges`) the output of this function will become compatible with\n * the {@link module:utils/diff~diff `diff()`} function:\n *\n *\t\tfastDiff( '12a', '12xyza' );\n *\t\t// [ 'equal', 'equal', 'insert', 'insert', 'insert', 'equal' ]\n *\n * The default output format of this function is compatible with the output format of\n * {@link module:utils/difftochanges~diffToChanges `diffToChanges()`}. The `diffToChanges()` input format is, in turn,\n * compatible with the output of {@link module:utils/diff~diff `diff()`}:\n *\n *\t\tconst a = '1234';\n *\t\tconst b = '12xyz34';\n *\n *\t\t// Both calls will return the same results (grouped changes format).\n *\t\tfastDiff( a, b );\n *\t\tdiffToChanges( diff( a, b ) );\n *\n *\t\t// Again, both calls will return the same results (atomic changes format).\n *\t\tfastDiff( a, b, null, true );\n *\t\tdiff( a, b );\n *\n *\n * @param {Array|String} a Input array or string.\n * @param {Array|String} b Input array or string.\n * @param {Function} [cmp] Optional function used to compare array values, by default `===` (strict equal operator) is used.\n * @param {Boolean} [atomicChanges=false] Whether an array of `inset|delete|equal` operations should\n * be returned instead of changes set. This makes this function compatible with {@link module:utils/diff~diff `diff()`}.\n * @returns {Array} Array of changes.\n */\nexport default function fastDiff( a, b, cmp, atomicChanges = false ) {\n\t// Set the comparator function.\n\tcmp = cmp || function( a, b ) {\n\t\treturn a === b;\n\t};\n\n\t// Transform text or any iterable into arrays for easier, consistent processing.\n\tif ( !Array.isArray( a ) ) {\n\t\ta = Array.from( a );\n\t}\n\n\tif ( !Array.isArray( b ) ) {\n\t\tb = Array.from( b );\n\t}\n\n\t// Find first and last change.\n\tconst changeIndexes = findChangeBoundaryIndexes( a, b, cmp );\n\n\t// Transform into changes array.\n\treturn atomicChanges ? changeIndexesToAtomicChanges( changeIndexes, b.length ) : changeIndexesToChanges( b, changeIndexes );\n}\n\n// Finds position of the first and last change in the given arrays. For example:\n//\n//\t\tconst indexes = findChangeBoundaryIndexes( [ '1', '2', '3', '4' ], [ '1', '3', '4', '2', '4' ] );\n//\t\tconsole.log( indexes ); // { firstIndex: 1, lastIndexOld: 3, lastIndexNew: 4 }\n//\n// The above indexes means that in the first array the modified part is `1[23]4` and in the second array it is `1[342]4`.\n// Based on such indexes, array with `insert`/`delete` operations which allows transforming first value into the second one\n// can be generated.\n//\n// @param {Array} arr1\n// @param {Array} arr2\n// @param {Function} cmp Comparator function.\n// @returns {Object}\n// @returns {Number} return.firstIndex Index of the first change in both values (always the same for both).\n// @returns {Number} result.lastIndexOld Index of the last common value in `arr1`.\n// @returns {Number} result.lastIndexNew Index of the last common value in `arr2`.\nfunction findChangeBoundaryIndexes( arr1, arr2, cmp ) {\n\t// Find the first difference between passed values.\n\tconst firstIndex = findFirstDifferenceIndex( arr1, arr2, cmp );\n\n\t// If arrays are equal return -1 indexes object.\n\tif ( firstIndex === -1 ) {\n\t\treturn { firstIndex: -1, lastIndexOld: -1, lastIndexNew: -1 };\n\t}\n\n\t// Remove the common part of each value and reverse them to make it simpler to find the last difference between them.\n\tconst oldArrayReversed = cutAndReverse( arr1, firstIndex );\n\tconst newArrayReversed = cutAndReverse( arr2, firstIndex );\n\n\t// Find the first difference between reversed values.\n\t// It should be treated as \"how many elements from the end the last difference occurred\".\n\t//\n\t// For example:\n\t//\n\t// \t\t\t\tinitial\t->\tafter cut\t-> reversed:\n\t// oldValue:\t'321ba'\t->\t'21ba'\t\t-> 'ab12'\n\t// newValue:\t'31xba'\t->\t'1xba'\t\t-> 'abx1'\n\t// lastIndex:\t\t\t\t\t\t\t-> 2\n\t//\n\t// So the last change occurred two characters from the end of the arrays.\n\tconst lastIndex = findFirstDifferenceIndex( oldArrayReversed, newArrayReversed, cmp );\n\n\t// Use `lastIndex` to calculate proper offset, starting from the beginning (`lastIndex` kind of starts from the end).\n\tconst lastIndexOld = arr1.length - lastIndex;\n\tconst lastIndexNew = arr2.length - lastIndex;\n\n\treturn { firstIndex, lastIndexOld, lastIndexNew };\n}\n\n// Returns a first index on which given arrays differ. If both arrays are the same, -1 is returned.\n//\n// @param {Array} arr1\n// @param {Array} arr2\n// @param {Function} cmp Comparator function.\n// @returns {Number}\nfunction findFirstDifferenceIndex( arr1, arr2, cmp ) {\n\tfor ( let i = 0; i < Math.max( arr1.length, arr2.length ); i++ ) {\n\t\tif ( arr1[ i ] === undefined || arr2[ i ] === undefined || !cmp( arr1[ i ], arr2[ i ] ) ) {\n\t\t\treturn i;\n\t\t}\n\t}\n\n\treturn -1; // Return -1 if arrays are equal.\n}\n\n// Returns a copy of the given array with `howMany` elements removed starting from the beginning and in reversed order.\n//\n// @param {Array} arr Array to be processed.\n// @param {Number} howMany How many elements from array beginning to remove.\n// @returns {Array} Shortened and reversed array.\nfunction cutAndReverse( arr, howMany ) {\n\treturn arr.slice( howMany ).reverse();\n}\n\n// Generates changes array based on change indexes from `findChangeBoundaryIndexes` function. This function will\n// generate array with 0 (no changes), 1 (deletion or insertion) or 2 records (insertion and deletion).\n//\n// @param {Array} newArray New array for which change indexes were calculated.\n// @param {Object} changeIndexes Change indexes object from `findChangeBoundaryIndexes` function.\n// @returns {Array.} Array of changes compatible with {@link module:utils/difftochanges~diffToChanges} format.\nfunction changeIndexesToChanges( newArray, changeIndexes ) {\n\tconst result = [];\n\tconst { firstIndex, lastIndexOld, lastIndexNew } = changeIndexes;\n\n\t// Order operations as 'insert', 'delete' array to keep compatibility with {@link module:utils/difftochanges~diffToChanges}\n\t// in most cases. However, 'diffToChanges' does not stick to any order so in some cases\n\t// (for example replacing '12345' with 'abcd') it will generate 'delete', 'insert' order.\n\tif ( lastIndexNew - firstIndex > 0 ) {\n\t\tresult.push( {\n\t\t\tindex: firstIndex,\n\t\t\ttype: 'insert',\n\t\t\tvalues: newArray.slice( firstIndex, lastIndexNew )\n\t\t} );\n\t}\n\n\tif ( lastIndexOld - firstIndex > 0 ) {\n\t\tresult.push( {\n\t\t\tindex: firstIndex + ( lastIndexNew - firstIndex ), // Increase index of what was inserted.\n\t\t\ttype: 'delete',\n\t\t\thowMany: lastIndexOld - firstIndex\n\t\t} );\n\t}\n\n\treturn result;\n}\n\n// Generates array with set `equal|insert|delete` operations based on change indexes from `findChangeBoundaryIndexes` function.\n//\n// @param {Object} changeIndexes Change indexes object from `findChangeBoundaryIndexes` function.\n// @param {Number} newLength Length of the new array on which `findChangeBoundaryIndexes` calculated change indexes.\n// @returns {Array.} Array of changes compatible with {@link module:utils/diff~diff} format.\nfunction changeIndexesToAtomicChanges( changeIndexes, newLength ) {\n\tconst { firstIndex, lastIndexOld, lastIndexNew } = changeIndexes;\n\n\t// No changes.\n\tif ( firstIndex === -1 ) {\n\t\treturn Array( newLength ).fill( 'equal' );\n\t}\n\n\tlet result = [];\n\tif ( firstIndex > 0 ) {\n\t\tresult = result.concat( Array( firstIndex ).fill( 'equal' ) );\n\t}\n\n\tif ( lastIndexNew - firstIndex > 0 ) {\n\t\tresult = result.concat( Array( lastIndexNew - firstIndex ).fill( 'insert' ) );\n\t}\n\n\tif ( lastIndexOld - firstIndex > 0 ) {\n\t\tresult = result.concat( Array( lastIndexOld - firstIndex ).fill( 'delete' ) );\n\t}\n\n\tif ( lastIndexNew < newLength ) {\n\t\tresult = result.concat( Array( newLength - lastIndexNew ).fill( 'equal' ) );\n\t}\n\n\treturn result;\n}\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module utils/diff\n */\n\nimport fastDiff from '../src/fastdiff';\n\n// The following code is based on the \"O(NP) Sequence Comparison Algorithm\"\n// by Sun Wu, Udi Manber, Gene Myers, Webb Miller.\n\n/**\n * Calculates the difference between two arrays or strings producing an array containing a list of changes\n * necessary to transform input into output.\n *\n *\t\tdiff( 'aba', 'acca' ); // [ 'equal', 'insert', 'insert', 'delete', 'equal' ]\n *\n * This function is based on the \"O(NP) Sequence Comparison Algorithm\" by Sun Wu, Udi Manber, Gene Myers, Webb Miller.\n * Unfortunately, while it gives the most precise results, its to complex for longer strings/arrow (above 200 items).\n * Therefore, `diff()` automatically switches to {@link module:utils/fastdiff~fastDiff `fastDiff()`} when detecting\n * such a scenario. The return formats of both functions are identical.\n *\n * @param {Array|String} a Input array or string.\n * @param {Array|String} b Output array or string.\n * @param {Function} [cmp] Optional function used to compare array values, by default === is used.\n * @returns {Array} Array of changes.\n */\nexport default function diff( a, b, cmp ) {\n\t// Set the comparator function.\n\tcmp = cmp || function( a, b ) {\n\t\treturn a === b;\n\t};\n\n\tconst aLength = a.length;\n\tconst bLength = b.length;\n\n\t// Perform `fastDiff` for longer strings/arrays (see #269).\n\tif ( aLength > 200 || bLength > 200 || aLength + bLength > 300 ) {\n\t\treturn diff.fastDiff( a, b, cmp, true );\n\t}\n\n\t// Temporary action type statics.\n\tlet _insert, _delete;\n\n\t// Swapped the arrays to use the shorter one as the first one.\n\tif ( bLength < aLength ) {\n\t\tconst tmp = a;\n\n\t\ta = b;\n\t\tb = tmp;\n\n\t\t// We swap the action types as well.\n\t\t_insert = 'delete';\n\t\t_delete = 'insert';\n\t} else {\n\t\t_insert = 'insert';\n\t\t_delete = 'delete';\n\t}\n\n\tconst m = a.length;\n\tconst n = b.length;\n\tconst delta = n - m;\n\n\t// Edit scripts, for each diagonal.\n\tconst es = {};\n\t// Furthest points, the furthest y we can get on each diagonal.\n\tconst fp = {};\n\n\tfunction snake( k ) {\n\t\t// We use -1 as an alternative below to handle initial values ( instead of filling the fp with -1 first ).\n\t\t// Furthest points (y) on the diagonal below k.\n\t\tconst y1 = ( fp[ k - 1 ] !== undefined ? fp[ k - 1 ] : -1 ) + 1;\n\t\t// Furthest points (y) on the diagonal above k.\n\t\tconst y2 = fp[ k + 1 ] !== undefined ? fp[ k + 1 ] : -1;\n\t\t// The way we should go to get further.\n\t\tconst dir = y1 > y2 ? -1 : 1;\n\n\t\t// Clone previous changes array (if any).\n\t\tif ( es[ k + dir ] ) {\n\t\t\tes[ k ] = es[ k + dir ].slice( 0 );\n\t\t}\n\n\t\t// Create changes array.\n\t\tif ( !es[ k ] ) {\n\t\t\tes[ k ] = [];\n\t\t}\n\n\t\t// Push the action.\n\t\tes[ k ].push( y1 > y2 ? _insert : _delete );\n\n\t\t// Set the beginning coordinates.\n\t\tlet y = Math.max( y1, y2 );\n\t\tlet x = y - k;\n\n\t\t// Traverse the diagonal as long as the values match.\n\t\twhile ( x < m && y < n && cmp( a[ x ], b[ y ] ) ) {\n\t\t\tx++;\n\t\t\ty++;\n\t\t\t// Push no change action.\n\t\t\tes[ k ].push( 'equal' );\n\t\t}\n\n\t\treturn y;\n\t}\n\n\tlet p = 0;\n\tlet k;\n\n\t// Traverse the graph until we reach the end of the longer string.\n\tdo {\n\t\t// Updates furthest points and edit scripts for diagonals below delta.\n\t\tfor ( k = -p; k < delta; k++ ) {\n\t\t\tfp[ k ] = snake( k );\n\t\t}\n\n\t\t// Updates furthest points and edit scripts for diagonals above delta.\n\t\tfor ( k = delta + p; k > delta; k-- ) {\n\t\t\tfp[ k ] = snake( k );\n\t\t}\n\n\t\t// Updates furthest point and edit script for the delta diagonal.\n\t\t// note that the delta diagonal is the one which goes through the sink (m, n).\n\t\tfp[ delta ] = snake( delta );\n\n\t\tp++;\n\t} while ( fp[ delta ] !== n );\n\n\t// Return the final list of edit changes.\n\t// We remove the first item that represents the action for the injected nulls.\n\treturn es[ delta ].slice( 1 );\n}\n\n// Store the API in static property to easily overwrite it in tests.\n// Too bad dependency injection does not work in Webpack + ES 6 (const) + Babel.\ndiff.fastDiff = fastDiff;\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module utils/dom/insertat\n */\n\n/**\n * Inserts node to the parent at given index.\n *\n * @param {Element} parentElement Parent element.\n * @param {Number} index Insertions index.\n * @param {Node} nodeToInsert Node to insert.\n */\nexport default function insertAt( parentElement, index, nodeToInsert ) {\n\tparentElement.insertBefore( nodeToInsert, parentElement.childNodes[ index ] || null );\n}\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module utils/dom/remove\n */\n\n/**\n * Removes given node from parent.\n *\n * @param {Node} node Node to remove.\n */\nexport default function remove( node ) {\n\tconst parent = node.parentNode;\n\n\tif ( parent ) {\n\t\tparent.removeChild( node );\n\t}\n}\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module utils/dom/isnode\n */\n\n/**\n * Checks if the object is a native DOM Node.\n *\n * @param {*} obj\n * @returns {Boolean}\n */\nexport default function isNode( obj ) {\n\tif ( obj ) {\n\t\tif ( obj.defaultView ) {\n\t\t\treturn obj instanceof obj.defaultView.Document;\n\t\t} else if ( obj.ownerDocument && obj.ownerDocument.defaultView ) {\n\t\t\treturn obj instanceof obj.ownerDocument.defaultView.Node;\n\t\t}\n\t}\n\n\treturn false;\n}\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/* globals Node */\n\n/**\n * @module engine/view/renderer\n */\n\nimport ViewText from './text';\nimport ViewPosition from './position';\nimport { INLINE_FILLER, INLINE_FILLER_LENGTH, startsWithFiller, isInlineFiller } from './filler';\n\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\nimport diff from '@ckeditor/ckeditor5-utils/src/diff';\nimport insertAt from '@ckeditor/ckeditor5-utils/src/dom/insertat';\nimport remove from '@ckeditor/ckeditor5-utils/src/dom/remove';\nimport ObservableMixin from '@ckeditor/ckeditor5-utils/src/observablemixin';\nimport CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';\nimport isText from '@ckeditor/ckeditor5-utils/src/dom/istext';\nimport isNode from '@ckeditor/ckeditor5-utils/src/dom/isnode';\nimport fastDiff from '@ckeditor/ckeditor5-utils/src/fastdiff';\nimport env from '@ckeditor/ckeditor5-utils/src/env';\n\n/**\n * Renderer is responsible for updating the DOM structure and the DOM selection based on\n * the {@link module:engine/view/renderer~Renderer#markToSync information about updated view nodes}.\n * In other words, it renders the view to the DOM.\n *\n * Its main responsibility is to make only the necessary, minimal changes to the DOM. However, unlike in many\n * virtual DOM implementations, the primary reason for doing minimal changes is not the performance but ensuring\n * that native editing features such as text composition, autocompletion, spell checking, selection's x-index are\n * affected as little as possible.\n *\n * Renderer uses {@link module:engine/view/domconverter~DomConverter} to transform view nodes and positions\n * to and from the DOM.\n */\nexport default class Renderer {\n\t/**\n\t * Creates a renderer instance.\n\t *\n\t * @param {module:engine/view/domconverter~DomConverter} domConverter Converter instance.\n\t * @param {module:engine/view/documentselection~DocumentSelection} selection View selection.\n\t */\n\tconstructor( domConverter, selection ) {\n\t\t/**\n\t\t * Set of DOM Documents instances.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Set.}\n\t\t */\n\t\tthis.domDocuments = new Set();\n\n\t\t/**\n\t\t * Converter instance.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/domconverter~DomConverter}\n\t\t */\n\t\tthis.domConverter = domConverter;\n\n\t\t/**\n\t\t * Set of nodes which attributes changed and may need to be rendered.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Set.}\n\t\t */\n\t\tthis.markedAttributes = new Set();\n\n\t\t/**\n\t\t * Set of elements which child lists changed and may need to be rendered.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Set.}\n\t\t */\n\t\tthis.markedChildren = new Set();\n\n\t\t/**\n\t\t * Set of text nodes which text data changed and may need to be rendered.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Set.}\n\t\t */\n\t\tthis.markedTexts = new Set();\n\n\t\t/**\n\t\t * View selection. Renderer updates DOM selection based on the view selection.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/documentselection~DocumentSelection}\n\t\t */\n\t\tthis.selection = selection;\n\n\t\t/**\n\t\t * Indicates if the view document is focused and selection can be rendered. Selection will not be rendered if\n\t\t * this is set to `false`.\n\t\t *\n\t\t * @member {Boolean}\n\t\t */\n\t\tthis.isFocused = false;\n\n\t\t/**\n\t\t * The text node in which the inline filler was rendered.\n\t\t *\n\t\t * @private\n\t\t * @member {Text}\n\t\t */\n\t\tthis._inlineFiller = null;\n\n\t\t/**\n\t\t * DOM element containing fake selection.\n\t\t *\n\t\t * @private\n\t\t * @type {null|HTMLElement}\n\t\t */\n\t\tthis._fakeSelectionContainer = null;\n\t}\n\n\t/**\n\t * Marks a view node to be updated in the DOM by {@link #render `render()`}.\n\t *\n\t * Note that only view nodes whose parents have corresponding DOM elements need to be marked to be synchronized.\n\t *\n\t * @see #markedAttributes\n\t * @see #markedChildren\n\t * @see #markedTexts\n\t *\n\t * @param {module:engine/view/document~ChangeType} type Type of the change.\n\t * @param {module:engine/view/node~Node} node Node to be marked.\n\t */\n\tmarkToSync( type, node ) {\n\t\tif ( type === 'text' ) {\n\t\t\tif ( this.domConverter.mapViewToDom( node.parent ) ) {\n\t\t\t\tthis.markedTexts.add( node );\n\t\t\t}\n\t\t} else {\n\t\t\t// If the node has no DOM element it is not rendered yet,\n\t\t\t// its children/attributes do not need to be marked to be sync.\n\t\t\tif ( !this.domConverter.mapViewToDom( node ) ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tif ( type === 'attributes' ) {\n\t\t\t\tthis.markedAttributes.add( node );\n\t\t\t} else if ( type === 'children' ) {\n\t\t\t\tthis.markedChildren.add( node );\n\t\t\t} else {\n\t\t\t\t/**\n\t\t\t\t * Unknown type passed to Renderer.markToSync.\n\t\t\t\t *\n\t\t\t\t * @error renderer-unknown-type\n\t\t\t\t */\n\t\t\t\tthrow new CKEditorError( 'view-renderer-unknown-type: Unknown type passed to Renderer.markToSync.', this );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Renders all buffered changes ({@link #markedAttributes}, {@link #markedChildren} and {@link #markedTexts}) and\n\t * the current view selection (if needed) to the DOM by applying a minimal set of changes to it.\n\t *\n\t * Renderer tries not to break the text composition (e.g. IME) and x-index of the selection,\n\t * so it does as little as it is needed to update the DOM.\n\t *\n\t * Renderer also handles {@link module:engine/view/filler fillers}. Especially, it checks if the inline filler is needed\n\t * at the selection position and adds or removes it. To prevent breaking text composition inline filler will not be\n\t * removed as long as the selection is in the text node which needed it at first.\n\t */\n\trender() {\n\t\tlet inlineFillerPosition;\n\n\t\t// Refresh mappings.\n\t\tfor ( const element of this.markedChildren ) {\n\t\t\tthis._updateChildrenMappings( element );\n\t\t}\n\n\t\t// There was inline filler rendered in the DOM but it's not\n\t\t// at the selection position any more, so we can remove it\n\t\t// (cause even if it's needed, it must be placed in another location).\n\t\tif ( this._inlineFiller && !this._isSelectionInInlineFiller() ) {\n\t\t\tthis._removeInlineFiller();\n\t\t}\n\n\t\t// If we've got the filler, let's try to guess its position in the view.\n\t\tif ( this._inlineFiller ) {\n\t\t\tinlineFillerPosition = this._getInlineFillerPosition();\n\t\t}\n\t\t// Otherwise, if it's needed, create it at the selection position.\n\t\telse if ( this._needsInlineFillerAtSelection() ) {\n\t\t\tinlineFillerPosition = this.selection.getFirstPosition();\n\n\t\t\t// Do not use `markToSync` so it will be added even if the parent is already added.\n\t\t\tthis.markedChildren.add( inlineFillerPosition.parent );\n\t\t}\n\n\t\tfor ( const element of this.markedAttributes ) {\n\t\t\tthis._updateAttrs( element );\n\t\t}\n\n\t\tfor ( const element of this.markedChildren ) {\n\t\t\tthis._updateChildren( element, { inlineFillerPosition } );\n\t\t}\n\n\t\tfor ( const node of this.markedTexts ) {\n\t\t\tif ( !this.markedChildren.has( node.parent ) && this.domConverter.mapViewToDom( node.parent ) ) {\n\t\t\t\tthis._updateText( node, { inlineFillerPosition } );\n\t\t\t}\n\t\t}\n\n\t\t// Check whether the inline filler is required and where it really is in the DOM.\n\t\t// At this point in most cases it will be in the DOM, but there are exceptions.\n\t\t// For example, if the inline filler was deep in the created DOM structure, it will not be created.\n\t\t// Similarly, if it was removed at the beginning of this function and then neither text nor children were updated,\n\t\t// it will not be present.\n\t\t// Fix those and similar scenarios.\n\t\tif ( inlineFillerPosition ) {\n\t\t\tconst fillerDomPosition = this.domConverter.viewPositionToDom( inlineFillerPosition );\n\t\t\tconst domDocument = fillerDomPosition.parent.ownerDocument;\n\n\t\t\tif ( !startsWithFiller( fillerDomPosition.parent ) ) {\n\t\t\t\t// Filler has not been created at filler position. Create it now.\n\t\t\t\tthis._inlineFiller = addInlineFiller( domDocument, fillerDomPosition.parent, fillerDomPosition.offset );\n\t\t\t} else {\n\t\t\t\t// Filler has been found, save it.\n\t\t\t\tthis._inlineFiller = fillerDomPosition.parent;\n\t\t\t}\n\t\t} else {\n\t\t\t// There is no filler needed.\n\t\t\tthis._inlineFiller = null;\n\t\t}\n\n\t\tthis._updateSelection();\n\t\tthis._updateFocus();\n\n\t\tthis.markedTexts.clear();\n\t\tthis.markedAttributes.clear();\n\t\tthis.markedChildren.clear();\n\t}\n\n\t/**\n\t * Updates mappings of view element's children.\n\t *\n\t * Children that were replaced in the view structure by similar elements (same tag name) are treated as 'replaced'.\n\t * This means that their mappings can be updated so the new view elements are mapped to the existing DOM elements.\n\t * Thanks to that these elements do not need to be re-rendered completely.\n\t *\n\t * @private\n\t * @param {module:engine/view/node~Node} viewElement The view element whose children mappings will be updated.\n\t */\n\t_updateChildrenMappings( viewElement ) {\n\t\tconst domElement = this.domConverter.mapViewToDom( viewElement );\n\n\t\tif ( !domElement ) {\n\t\t\t// If there is no `domElement` it means that it was already removed from DOM and there is no need to process it.\n\t\t\treturn;\n\t\t}\n\n\t\tconst actualDomChildren = this.domConverter.mapViewToDom( viewElement ).childNodes;\n\t\tconst expectedDomChildren = Array.from(\n\t\t\tthis.domConverter.viewChildrenToDom( viewElement, domElement.ownerDocument, { withChildren: false } )\n\t\t);\n\t\tconst diff = this._diffNodeLists( actualDomChildren, expectedDomChildren );\n\t\tconst actions = this._findReplaceActions( diff, actualDomChildren, expectedDomChildren );\n\n\t\tif ( actions.indexOf( 'replace' ) !== -1 ) {\n\t\t\tconst counter = { equal: 0, insert: 0, delete: 0 };\n\n\t\t\tfor ( const action of actions ) {\n\t\t\t\tif ( action === 'replace' ) {\n\t\t\t\t\tconst insertIndex = counter.equal + counter.insert;\n\t\t\t\t\tconst deleteIndex = counter.equal + counter.delete;\n\t\t\t\t\tconst viewChild = viewElement.getChild( insertIndex );\n\n\t\t\t\t\t// The 'uiElement' is a special one and its children are not stored in a view (#799),\n\t\t\t\t\t// so we cannot use it with replacing flow (since it uses view children during rendering\n\t\t\t\t\t// which will always result in rendering empty element).\n\t\t\t\t\tif ( viewChild && !viewChild.is( 'uiElement' ) ) {\n\t\t\t\t\t\tthis._updateElementMappings( viewChild, actualDomChildren[ deleteIndex ] );\n\t\t\t\t\t}\n\n\t\t\t\t\tremove( expectedDomChildren[ insertIndex ] );\n\t\t\t\t\tcounter.equal++;\n\t\t\t\t} else {\n\t\t\t\t\tcounter[ action ]++;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Updates mappings of a given view element.\n\t *\n\t * @private\n\t * @param {module:engine/view/node~Node} viewElement The view element whose mappings will be updated.\n\t * @param {Node} domElement The DOM element representing the given view element.\n\t */\n\t_updateElementMappings( viewElement, domElement ) {\n\t\t// Remap 'DomConverter' bindings.\n\t\tthis.domConverter.unbindDomElement( domElement );\n\t\tthis.domConverter.bindElements( domElement, viewElement );\n\n\t\t// View element may have children which needs to be updated, but are not marked, mark them to update.\n\t\tthis.markedChildren.add( viewElement );\n\n\t\t// Because we replace new view element mapping with the existing one, the corresponding DOM element\n\t\t// will not be rerendered. The new view element may have different attributes than the previous one.\n\t\t// Since its corresponding DOM element will not be rerendered, new attributes will not be added\n\t\t// to the DOM, so we need to mark it here to make sure its attributes gets updated. See #1427 for more\n\t\t// detailed case study.\n\t\t// Also there are cases where replaced element is removed from the view structure and then has\n\t\t// its attributes changed or removed. In such cases the element will not be present in `markedAttributes`\n\t\t// and also may be the same (`element.isSimilar()`) as the reused element not having its attributes updated.\n\t\t// To prevent such situations we always mark reused element to have its attributes rerenderd (#1560).\n\t\tthis.markedAttributes.add( viewElement );\n\t}\n\n\t/**\n\t * Gets the position of the inline filler based on the current selection.\n\t * Here, we assume that we know that the filler is needed and\n\t * {@link #_isSelectionInInlineFiller is at the selection position}, and, since it is needed,\n\t * it is somewhere at the selection position.\n\t *\n\t * Note: The filler position cannot be restored based on the filler's DOM text node, because\n\t * when this method is called (before rendering), the bindings will often be broken. View-to-DOM\n\t * bindings are only dependable after rendering.\n\t *\n\t * @private\n\t * @returns {module:engine/view/position~Position}\n\t */\n\t_getInlineFillerPosition() {\n\t\tconst firstPos = this.selection.getFirstPosition();\n\n\t\tif ( firstPos.parent.is( 'text' ) ) {\n\t\t\treturn ViewPosition._createBefore( this.selection.getFirstPosition().parent );\n\t\t} else {\n\t\t\treturn firstPos;\n\t\t}\n\t}\n\n\t/**\n\t * Returns `true` if the selection has not left the inline filler's text node.\n\t * If it is `true`, it means that the filler had been added for a reason and the selection did not\n\t * leave the filler's text node. For example, the user can be in the middle of a composition so it should not be touched.\n\t *\n\t * @private\n\t * @returns {Boolean} `true` if the inline filler and selection are in the same place.\n\t */\n\t_isSelectionInInlineFiller() {\n\t\tif ( this.selection.rangeCount != 1 || !this.selection.isCollapsed ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Note, we can't check if selection's position equals position of the\n\t\t// this._inlineFiller node, because of #663. We may not be able to calculate\n\t\t// the filler's position in the view at this stage.\n\t\t// Instead, we check it the other way – whether selection is anchored in\n\t\t// that text node or next to it.\n\n\t\t// Possible options are:\n\t\t// \"FILLER{}\"\n\t\t// \"FILLERadded-text{}\"\n\t\tconst selectionPosition = this.selection.getFirstPosition();\n\t\tconst position = this.domConverter.viewPositionToDom( selectionPosition );\n\n\t\tif ( position && isText( position.parent ) && startsWithFiller( position.parent ) ) {\n\t\t\treturn true;\n\t\t}\n\n\t\treturn false;\n\t}\n\n\t/**\n\t * Removes the inline filler.\n\t *\n\t * @private\n\t */\n\t_removeInlineFiller() {\n\t\tconst domFillerNode = this._inlineFiller;\n\n\t\t// Something weird happened and the stored node doesn't contain the filler's text.\n\t\tif ( !startsWithFiller( domFillerNode ) ) {\n\t\t\t/**\n\t\t\t * The inline filler node was lost. Most likely, something overwrote the filler text node\n\t\t\t * in the DOM.\n\t\t\t *\n\t\t\t * @error view-renderer-filler-was-lost\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-renderer-filler-was-lost: The inline filler node was lost.', this );\n\t\t}\n\n\t\tif ( isInlineFiller( domFillerNode ) ) {\n\t\t\tdomFillerNode.parentNode.removeChild( domFillerNode );\n\t\t} else {\n\t\t\tdomFillerNode.data = domFillerNode.data.substr( INLINE_FILLER_LENGTH );\n\t\t}\n\n\t\tthis._inlineFiller = null;\n\t}\n\n\t/**\n\t * Checks if the inline {@link module:engine/view/filler filler} should be added.\n\t *\n\t * @private\n\t * @returns {Boolean} `true` if the inline filler should be added.\n\t */\n\t_needsInlineFillerAtSelection() {\n\t\tif ( this.selection.rangeCount != 1 || !this.selection.isCollapsed ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tconst selectionPosition = this.selection.getFirstPosition();\n\t\tconst selectionParent = selectionPosition.parent;\n\t\tconst selectionOffset = selectionPosition.offset;\n\n\t\t// If there is no DOM root we do not care about fillers.\n\t\tif ( !this.domConverter.mapViewToDom( selectionParent.root ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tif ( !( selectionParent.is( 'element' ) ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Prevent adding inline filler inside elements with contenteditable=false.\n\t\t// https://github.com/ckeditor/ckeditor5-engine/issues/1170\n\t\tif ( !isEditable( selectionParent ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// We have block filler, we do not need inline one.\n\t\tif ( selectionOffset === selectionParent.getFillerOffset() ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tconst nodeBefore = selectionPosition.nodeBefore;\n\t\tconst nodeAfter = selectionPosition.nodeAfter;\n\n\t\tif ( nodeBefore instanceof ViewText || nodeAfter instanceof ViewText ) {\n\t\t\treturn false;\n\t\t}\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Checks if text needs to be updated and possibly updates it.\n\t *\n\t * @private\n\t * @param {module:engine/view/text~Text} viewText View text to update.\n\t * @param {Object} options\n\t * @param {module:engine/view/position~Position} options.inlineFillerPosition The position where the inline\n\t * filler should be rendered.\n\t */\n\t_updateText( viewText, options ) {\n\t\tconst domText = this.domConverter.findCorrespondingDomText( viewText );\n\t\tconst newDomText = this.domConverter.viewToDom( viewText, domText.ownerDocument );\n\n\t\tconst actualText = domText.data;\n\t\tlet expectedText = newDomText.data;\n\n\t\tconst filler = options.inlineFillerPosition;\n\n\t\tif ( filler && filler.parent == viewText.parent && filler.offset == viewText.index ) {\n\t\t\texpectedText = INLINE_FILLER + expectedText;\n\t\t}\n\n\t\tif ( actualText != expectedText ) {\n\t\t\tconst actions = fastDiff( actualText, expectedText );\n\n\t\t\tfor ( const action of actions ) {\n\t\t\t\tif ( action.type === 'insert' ) {\n\t\t\t\t\tdomText.insertData( action.index, action.values.join( '' ) );\n\t\t\t\t} else { // 'delete'\n\t\t\t\t\tdomText.deleteData( action.index, action.howMany );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Checks if attribute list needs to be updated and possibly updates it.\n\t *\n\t * @private\n\t * @param {module:engine/view/element~Element} viewElement The view element to update.\n\t */\n\t_updateAttrs( viewElement ) {\n\t\tconst domElement = this.domConverter.mapViewToDom( viewElement );\n\n\t\tif ( !domElement ) {\n\t\t\t// If there is no `domElement` it means that 'viewElement' is outdated as its mapping was updated\n\t\t\t// in 'this._updateChildrenMappings()'. There is no need to process it as new view element which\n\t\t\t// replaced old 'viewElement' mapping was also added to 'this.markedAttributes'\n\t\t\t// in 'this._updateChildrenMappings()' so it will be processed separately.\n\t\t\treturn;\n\t\t}\n\n\t\tconst domAttrKeys = Array.from( domElement.attributes ).map( attr => attr.name );\n\t\tconst viewAttrKeys = viewElement.getAttributeKeys();\n\n\t\t// Add or overwrite attributes.\n\t\tfor ( const key of viewAttrKeys ) {\n\t\t\tdomElement.setAttribute( key, viewElement.getAttribute( key ) );\n\t\t}\n\n\t\t// Remove from DOM attributes which do not exists in the view.\n\t\tfor ( const key of domAttrKeys ) {\n\t\t\tif ( !viewElement.hasAttribute( key ) ) {\n\t\t\t\tdomElement.removeAttribute( key );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Checks if elements child list needs to be updated and possibly updates it.\n\t *\n\t * @private\n\t * @param {module:engine/view/element~Element} viewElement View element to update.\n\t * @param {Object} options\n\t * @param {module:engine/view/position~Position} options.inlineFillerPosition The position where the inline\n\t * filler should be rendered.\n\t */\n\t_updateChildren( viewElement, options ) {\n\t\tconst domElement = this.domConverter.mapViewToDom( viewElement );\n\n\t\tif ( !domElement ) {\n\t\t\t// If there is no `domElement` it means that it was already removed from DOM.\n\t\t\t// There is no need to process it. It will be processed when re-inserted.\n\t\t\treturn;\n\t\t}\n\n\t\tconst inlineFillerPosition = options.inlineFillerPosition;\n\t\tconst actualDomChildren = this.domConverter.mapViewToDom( viewElement ).childNodes;\n\t\tconst expectedDomChildren = Array.from(\n\t\t\tthis.domConverter.viewChildrenToDom( viewElement, domElement.ownerDocument, { bind: true, inlineFillerPosition } )\n\t\t);\n\n\t\t// Inline filler element has to be created as it is present in the DOM, but not in the view. It is required\n\t\t// during diffing so text nodes could be compared correctly and also during rendering to maintain\n\t\t// proper order and indexes while updating the DOM.\n\t\tif ( inlineFillerPosition && inlineFillerPosition.parent === viewElement ) {\n\t\t\taddInlineFiller( domElement.ownerDocument, expectedDomChildren, inlineFillerPosition.offset );\n\t\t}\n\n\t\tconst diff = this._diffNodeLists( actualDomChildren, expectedDomChildren );\n\n\t\tlet i = 0;\n\t\tconst nodesToUnbind = new Set();\n\n\t\tfor ( const action of diff ) {\n\t\t\tif ( action === 'insert' ) {\n\t\t\t\tinsertAt( domElement, i, expectedDomChildren[ i ] );\n\t\t\t\ti++;\n\t\t\t} else if ( action === 'delete' ) {\n\t\t\t\tnodesToUnbind.add( actualDomChildren[ i ] );\n\t\t\t\tremove( actualDomChildren[ i ] );\n\t\t\t} else { // 'equal'\n\t\t\t\t// Force updating text nodes inside elements which did not change and do not need to be re-rendered (#1125).\n\t\t\t\tthis._markDescendantTextToSync( this.domConverter.domToView( expectedDomChildren[ i ] ) );\n\t\t\t\ti++;\n\t\t\t}\n\t\t}\n\n\t\t// Unbind removed nodes. When node does not have a parent it means that it was removed from DOM tree during\n\t\t// comparision with the expected DOM. We don't need to check child nodes, because if child node was reinserted,\n\t\t// it was moved to DOM tree out of the removed node.\n\t\tfor ( const node of nodesToUnbind ) {\n\t\t\tif ( !node.parentNode ) {\n\t\t\t\tthis.domConverter.unbindDomElement( node );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Shorthand for diffing two arrays or node lists of DOM nodes.\n\t *\n\t * @private\n\t * @param {Array.|NodeList} actualDomChildren Actual DOM children\n\t * @param {Array.|NodeList} expectedDomChildren Expected DOM children.\n\t * @returns {Array.} The list of actions based on the {@link module:utils/diff~diff} function.\n\t */\n\t_diffNodeLists( actualDomChildren, expectedDomChildren ) {\n\t\tactualDomChildren = filterOutFakeSelectionContainer( actualDomChildren, this._fakeSelectionContainer );\n\n\t\treturn diff( actualDomChildren, expectedDomChildren, sameNodes.bind( null, this.domConverter ) );\n\t}\n\n\t/**\n\t * Finds DOM nodes that were replaced with the similar nodes (same tag name) in the view. All nodes are compared\n\t * within one `insert`/`delete` action group, for example:\n\t *\n\t * \t\tActual DOM:\t\t

FooBarBazBax

\n\t * \t\tExpected DOM:\t

Bar123Baz456

\n\t * \t\tInput actions:\t[ insert, insert, delete, delete, equal, insert, delete ]\n\t * \t\tOutput actions:\t[ insert, replace, delete, equal, replace ]\n\t *\n\t * @private\n\t * @param {Array.} actions Actions array which is a result of the {@link module:utils/diff~diff} function.\n\t * @param {Array.|NodeList} actualDom Actual DOM children\n\t * @param {Array.} expectedDom Expected DOM children.\n\t * @returns {Array.} Actions array modified with the `replace` actions.\n\t */\n\t_findReplaceActions( actions, actualDom, expectedDom ) {\n\t\t// If there is no both 'insert' and 'delete' actions, no need to check for replaced elements.\n\t\tif ( actions.indexOf( 'insert' ) === -1 || actions.indexOf( 'delete' ) === -1 ) {\n\t\t\treturn actions;\n\t\t}\n\n\t\tlet newActions = [];\n\t\tlet actualSlice = [];\n\t\tlet expectedSlice = [];\n\n\t\tconst counter = { equal: 0, insert: 0, delete: 0 };\n\n\t\tfor ( const action of actions ) {\n\t\t\tif ( action === 'insert' ) {\n\t\t\t\texpectedSlice.push( expectedDom[ counter.equal + counter.insert ] );\n\t\t\t} else if ( action === 'delete' ) {\n\t\t\t\tactualSlice.push( actualDom[ counter.equal + counter.delete ] );\n\t\t\t} else { // equal\n\t\t\t\tnewActions = newActions.concat( diff( actualSlice, expectedSlice, areSimilar ).map( x => x === 'equal' ? 'replace' : x ) );\n\t\t\t\tnewActions.push( 'equal' );\n\t\t\t\t// Reset stored elements on 'equal'.\n\t\t\t\tactualSlice = [];\n\t\t\t\texpectedSlice = [];\n\t\t\t}\n\t\t\tcounter[ action ]++;\n\t\t}\n\n\t\treturn newActions.concat( diff( actualSlice, expectedSlice, areSimilar ).map( x => x === 'equal' ? 'replace' : x ) );\n\t}\n\n\t/**\n\t * Marks text nodes to be synchronized.\n\t *\n\t * If a text node is passed, it will be marked. If an element is passed, all descendant text nodes inside it will be marked.\n\t *\n\t * @private\n\t * @param {module:engine/view/node~Node} viewNode View node to sync.\n\t */\n\t_markDescendantTextToSync( viewNode ) {\n\t\tif ( !viewNode ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( viewNode.is( 'text' ) ) {\n\t\t\tthis.markedTexts.add( viewNode );\n\t\t} else if ( viewNode.is( 'element' ) ) {\n\t\t\tfor ( const child of viewNode.getChildren() ) {\n\t\t\t\tthis._markDescendantTextToSync( child );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Checks if the selection needs to be updated and possibly updates it.\n\t *\n\t * @private\n\t */\n\t_updateSelection() {\n\t\t// If there is no selection - remove DOM and fake selections.\n\t\tif ( this.selection.rangeCount === 0 ) {\n\t\t\tthis._removeDomSelection();\n\t\t\tthis._removeFakeSelection();\n\n\t\t\treturn;\n\t\t}\n\n\t\tconst domRoot = this.domConverter.mapViewToDom( this.selection.editableElement );\n\n\t\t// Do nothing if there is no focus, or there is no DOM element corresponding to selection's editable element.\n\t\tif ( !this.isFocused || !domRoot ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Render selection.\n\t\tif ( this.selection.isFake ) {\n\t\t\tthis._updateFakeSelection( domRoot );\n\t\t} else {\n\t\t\tthis._removeFakeSelection();\n\t\t\tthis._updateDomSelection( domRoot );\n\t\t}\n\t}\n\n\t/**\n\t * Updates the fake selection.\n\t *\n\t * @private\n\t * @param {HTMLElement} domRoot A valid DOM root where the fake selection container should be added.\n\t */\n\t_updateFakeSelection( domRoot ) {\n\t\tconst domDocument = domRoot.ownerDocument;\n\n\t\tif ( !this._fakeSelectionContainer ) {\n\t\t\tthis._fakeSelectionContainer = createFakeSelectionContainer( domDocument );\n\t\t}\n\n\t\tconst container = this._fakeSelectionContainer;\n\n\t\t// Bind fake selection container with the current selection *position*.\n\t\tthis.domConverter.bindFakeSelection( container, this.selection );\n\n\t\tif ( !this._fakeSelectionNeedsUpdate( domRoot ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( !container.parentElement || container.parentElement != domRoot ) {\n\t\t\tdomRoot.appendChild( container );\n\t\t}\n\n\t\tcontainer.textContent = this.selection.fakeSelectionLabel || '\\u00A0';\n\n\t\tconst domSelection = domDocument.getSelection();\n\t\tconst domRange = domDocument.createRange();\n\n\t\tdomSelection.removeAllRanges();\n\t\tdomRange.selectNodeContents( container );\n\t\tdomSelection.addRange( domRange );\n\t}\n\n\t/**\n\t * Updates the DOM selection.\n\t *\n\t * @private\n\t * @param {HTMLElement} domRoot A valid DOM root where the DOM selection should be rendered.\n\t */\n\t_updateDomSelection( domRoot ) {\n\t\tconst domSelection = domRoot.ownerDocument.defaultView.getSelection();\n\n\t\t// Let's check whether DOM selection needs updating at all.\n\t\tif ( !this._domSelectionNeedsUpdate( domSelection ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Multi-range selection is not available in most browsers, and, at least in Chrome, trying to\n\t\t// set such selection, that is not continuous, throws an error. Because of that, we will just use anchor\n\t\t// and focus of view selection.\n\t\t// Since we are not supporting multi-range selection, we also do not need to check if proper editable is\n\t\t// selected. If there is any editable selected, it is okay (editable is taken from selection anchor).\n\t\tconst anchor = this.domConverter.viewPositionToDom( this.selection.anchor );\n\t\tconst focus = this.domConverter.viewPositionToDom( this.selection.focus );\n\n\t\t// Focus the new editing host.\n\t\t// Otherwise, FF may throw an error (https://github.com/ckeditor/ckeditor5/issues/721).\n\t\tdomRoot.focus();\n\n\t\tdomSelection.collapse( anchor.parent, anchor.offset );\n\t\tdomSelection.extend( focus.parent, focus.offset );\n\n\t\t// Firefox–specific hack (https://github.com/ckeditor/ckeditor5-engine/issues/1439).\n\t\tif ( env.isGecko ) {\n\t\t\tfixGeckoSelectionAfterBr( focus, domSelection );\n\t\t}\n\t}\n\n\t/**\n\t * Checks whether a given DOM selection needs to be updated.\n\t *\n\t * @private\n\t * @param {Selection} domSelection The DOM selection to check.\n\t * @returns {Boolean}\n\t */\n\t_domSelectionNeedsUpdate( domSelection ) {\n\t\tif ( !this.domConverter.isDomSelectionCorrect( domSelection ) ) {\n\t\t\t// Current DOM selection is in incorrect position. We need to update it.\n\t\t\treturn true;\n\t\t}\n\n\t\tconst oldViewSelection = domSelection && this.domConverter.domSelectionToView( domSelection );\n\n\t\tif ( oldViewSelection && this.selection.isEqual( oldViewSelection ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// If selection is not collapsed, it does not need to be updated if it is similar.\n\t\tif ( !this.selection.isCollapsed && this.selection.isSimilar( oldViewSelection ) ) {\n\t\t\t// Selection did not changed and is correct, do not update.\n\t\t\treturn false;\n\t\t}\n\n\t\t// Selections are not similar.\n\t\treturn true;\n\t}\n\n\t/**\n\t * Checks whether the fake selection needs to be updated.\n\t *\n\t * @private\n\t * @param {HTMLElement} domRoot A valid DOM root where a new fake selection container should be added.\n\t * @returns {Boolean}\n\t */\n\t_fakeSelectionNeedsUpdate( domRoot ) {\n\t\tconst container = this._fakeSelectionContainer;\n\t\tconst domSelection = domRoot.ownerDocument.getSelection();\n\n\t\t// Fake selection needs to be updated if there's no fake selection container, or the container currently sits\n\t\t// in a different root.\n\t\tif ( !container || container.parentElement !== domRoot ) {\n\t\t\treturn true;\n\t\t}\n\n\t\t// Make sure that the selection actually is within the fake selection.\n\t\tif ( domSelection.anchorNode !== container && !container.contains( domSelection.anchorNode ) ) {\n\t\t\treturn true;\n\t\t}\n\n\t\treturn container.textContent !== this.selection.fakeSelectionLabel;\n\t}\n\n\t/**\n\t * Removes the DOM selection.\n\t *\n\t * @private\n\t */\n\t_removeDomSelection() {\n\t\tfor ( const doc of this.domDocuments ) {\n\t\t\tconst domSelection = doc.getSelection();\n\n\t\t\tif ( domSelection.rangeCount ) {\n\t\t\t\tconst activeDomElement = doc.activeElement;\n\t\t\t\tconst viewElement = this.domConverter.mapDomToView( activeDomElement );\n\n\t\t\t\tif ( activeDomElement && viewElement ) {\n\t\t\t\t\tdoc.getSelection().removeAllRanges();\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Removes the fake selection.\n\t *\n\t * @private\n\t */\n\t_removeFakeSelection() {\n\t\tconst container = this._fakeSelectionContainer;\n\n\t\tif ( container ) {\n\t\t\tcontainer.remove();\n\t\t}\n\t}\n\n\t/**\n\t * Checks if focus needs to be updated and possibly updates it.\n\t *\n\t * @private\n\t */\n\t_updateFocus() {\n\t\tif ( this.isFocused ) {\n\t\t\tconst editable = this.selection.editableElement;\n\n\t\t\tif ( editable ) {\n\t\t\t\tthis.domConverter.focus( editable );\n\t\t\t}\n\t\t}\n\t}\n}\n\nmix( Renderer, ObservableMixin );\n\n// Checks if provided element is editable.\n//\n// @private\n// @param {module:engine/view/element~Element} element\n// @returns {Boolean}\nfunction isEditable( element ) {\n\tif ( element.getAttribute( 'contenteditable' ) == 'false' ) {\n\t\treturn false;\n\t}\n\n\tconst parent = element.findAncestor( element => element.hasAttribute( 'contenteditable' ) );\n\n\treturn !parent || parent.getAttribute( 'contenteditable' ) == 'true';\n}\n\n// Adds inline filler at a given position.\n//\n// The position can be given as an array of DOM nodes and an offset in that array,\n// or a DOM parent element and an offset in that element.\n//\n// @private\n// @param {Document} domDocument\n// @param {Element|Array.} domParentOrArray\n// @param {Number} offset\n// @returns {Text} The DOM text node that contains an inline filler.\nfunction addInlineFiller( domDocument, domParentOrArray, offset ) {\n\tconst childNodes = domParentOrArray instanceof Array ? domParentOrArray : domParentOrArray.childNodes;\n\tconst nodeAfterFiller = childNodes[ offset ];\n\n\tif ( isText( nodeAfterFiller ) ) {\n\t\tnodeAfterFiller.data = INLINE_FILLER + nodeAfterFiller.data;\n\n\t\treturn nodeAfterFiller;\n\t} else {\n\t\tconst fillerNode = domDocument.createTextNode( INLINE_FILLER );\n\n\t\tif ( Array.isArray( domParentOrArray ) ) {\n\t\t\tchildNodes.splice( offset, 0, fillerNode );\n\t\t} else {\n\t\t\tinsertAt( domParentOrArray, offset, fillerNode );\n\t\t}\n\n\t\treturn fillerNode;\n\t}\n}\n\n// Whether two DOM nodes should be considered as similar.\n// Nodes are considered similar if they have the same tag name.\n//\n// @private\n// @param {Node} node1\n// @param {Node} node2\n// @returns {Boolean}\nfunction areSimilar( node1, node2 ) {\n\treturn isNode( node1 ) && isNode( node2 ) &&\n\t\t!isText( node1 ) && !isText( node2 ) &&\n\t\tnode1.tagName.toLowerCase() === node2.tagName.toLowerCase();\n}\n\n// Whether two dom nodes should be considered as the same.\n// Two nodes which are considered the same are:\n//\n//\t\t* Text nodes with the same text.\n//\t\t* Element nodes represented by the same object.\n//\t\t* Two block filler elements.\n//\n// @private\n// @param {String} blockFillerMode Block filler mode, see {@link module:engine/view/domconverter~DomConverter#blockFillerMode}.\n// @param {Node} node1\n// @param {Node} node2\n// @returns {Boolean}\nfunction sameNodes( domConverter, actualDomChild, expectedDomChild ) {\n\t// Elements.\n\tif ( actualDomChild === expectedDomChild ) {\n\t\treturn true;\n\t}\n\t// Texts.\n\telse if ( isText( actualDomChild ) && isText( expectedDomChild ) ) {\n\t\treturn actualDomChild.data === expectedDomChild.data;\n\t}\n\t// Block fillers.\n\telse if ( domConverter.isBlockFiller( actualDomChild ) &&\n\t\tdomConverter.isBlockFiller( expectedDomChild ) ) {\n\t\treturn true;\n\t}\n\n\t// Not matching types.\n\treturn false;\n}\n\n// The following is a Firefox–specific hack (https://github.com/ckeditor/ckeditor5-engine/issues/1439).\n// When the native DOM selection is at the end of the block and preceded by
e.g.\n//\n//\t\t

foo
[]

\n//\n// which happens a lot when using the soft line break, the browser fails to (visually) move the\n// caret to the new line. A quick fix is as simple as force–refreshing the selection with the same range.\nfunction fixGeckoSelectionAfterBr( focus, domSelection ) {\n\tconst parent = focus.parent;\n\n\t// This fix works only when the focus point is at the very end of an element.\n\t// There is no point in running it in cases unrelated to the browser bug.\n\tif ( parent.nodeType != Node.ELEMENT_NODE || focus.offset != parent.childNodes.length - 1 ) {\n\t\treturn;\n\t}\n\n\tconst childAtOffset = parent.childNodes[ focus.offset ];\n\n\t// To stay on the safe side, the fix being as specific as possible, it targets only the\n\t// selection which is at the very end of the element and preceded by
.\n\tif ( childAtOffset && childAtOffset.tagName == 'BR' ) {\n\t\tdomSelection.addRange( domSelection.getRangeAt( 0 ) );\n\t}\n}\n\nfunction filterOutFakeSelectionContainer( domChildList, fakeSelectionContainer ) {\n\tconst childList = Array.from( domChildList );\n\n\tif ( childList.length == 0 || !fakeSelectionContainer ) {\n\t\treturn childList;\n\t}\n\n\tconst last = childList[ childList.length - 1 ];\n\n\tif ( last == fakeSelectionContainer ) {\n\t\tchildList.pop();\n\t}\n\n\treturn childList;\n}\n\n// Creates a fake selection container for a given document.\n//\n// @private\n// @param {Document} domDocument\n// @returns {HTMLElement}\nfunction createFakeSelectionContainer( domDocument ) {\n\tconst container = domDocument.createElement( 'div' );\n\n\tObject.assign( container.style, {\n\t\tposition: 'fixed',\n\t\ttop: 0,\n\t\tleft: '-9999px',\n\t\t// See https://github.com/ckeditor/ckeditor5/issues/752.\n\t\twidth: '42px'\n\t} );\n\n\t// Fill it with a text node so we can update it later.\n\tcontainer.textContent = '\\u00A0';\n\n\treturn container;\n}\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/* globals window, document */\n\n/**\n * @module utils/dom/global\n */\n\n/**\n * A helper (module) giving an access to the global DOM objects such as `window` and\n * `document`. Accessing these objects using this helper allows easy and bulletproof\n * testing, i.e. stubbing native properties:\n *\n *\t\timport global from 'ckeditor5/utils/dom/global.js';\n *\n *\t\t// This stub will work for any code using global module.\n *\t\ttestUtils.sinon.stub( global, 'window', {\n *\t\t\tinnerWidth: 10000\n *\t\t} );\n *\n *\t\tconsole.log( global.window.innerWidth );\n */\nexport default { window, document };\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module utils/dom/indexof\n */\n\n/**\n * Returns index of the node in the parent element.\n *\n * @param {Node} node Node which index is tested.\n * @returns {Number} Index of the node in the parent element. Returns 0 if node has no parent.\n */\nexport default function indexOf( node ) {\n\tlet index = 0;\n\n\twhile ( node.previousSibling ) {\n\t\tnode = node.previousSibling;\n\t\tindex++;\n\t}\n\n\treturn index;\n}\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/* globals Node */\n\n/**\n * @module utils/dom/getancestors\n */\n\n/**\n * Returns all ancestors of given DOM node, starting from the top-most (root). Includes the given node itself. If the\n * node is a part of `DocumentFragment` that `DocumentFragment` will be returned. In contrary, if the node is\n * appended to a `Document`, that `Document` will not be returned (algorithms operating on DOM tree care for `Document#documentElement`\n * at most, which will be returned).\n *\n * @param {Node} node DOM node.\n * @returns {Array.} Array of given `node` parents.\n */\nexport default function getAncestors( node ) {\n\tconst nodes = [];\n\n\t// We are interested in `Node`s `DocumentFragment`s only.\n\twhile ( node && node.nodeType != Node.DOCUMENT_NODE ) {\n\t\tnodes.unshift( node );\n\t\tnode = node.parentNode;\n\t}\n\n\treturn nodes;\n}\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module engine/view/domconverter\n */\n\n/* globals document, Node, NodeFilter, Text */\n\nimport ViewText from './text';\nimport ViewElement from './element';\nimport ViewPosition from './position';\nimport ViewRange from './range';\nimport ViewSelection from './selection';\nimport ViewDocumentFragment from './documentfragment';\nimport ViewTreeWalker from './treewalker';\nimport { BR_FILLER, getDataWithoutFiller, INLINE_FILLER_LENGTH, isInlineFiller, NBSP_FILLER, startsWithFiller } from './filler';\n\nimport global from '@ckeditor/ckeditor5-utils/src/dom/global';\nimport indexOf from '@ckeditor/ckeditor5-utils/src/dom/indexof';\nimport getAncestors from '@ckeditor/ckeditor5-utils/src/dom/getancestors';\nimport getCommonAncestor from '@ckeditor/ckeditor5-utils/src/dom/getcommonancestor';\nimport isText from '@ckeditor/ckeditor5-utils/src/dom/istext';\nimport { isElement } from 'lodash-es';\n\n// eslint-disable-next-line new-cap\nconst BR_FILLER_REF = BR_FILLER( document );\n\n/**\n * DomConverter is a set of tools to do transformations between DOM nodes and view nodes. It also handles\n * {@link module:engine/view/domconverter~DomConverter#bindElements binding} these nodes.\n *\n * The instance of DOMConverter is available in {@link module:engine/view/view~View#domConverter `editor.editing.view.domConverter`}.\n *\n * DomConverter does not check which nodes should be rendered (use {@link module:engine/view/renderer~Renderer}), does not keep a\n * state of a tree nor keeps synchronization between tree view and DOM tree (use {@link module:engine/view/document~Document}).\n *\n * DomConverter keeps DOM elements to View element bindings, so when the converter will be destroyed, the binding will\n * be lost. Two converters will keep separate binding maps, so one tree view can be bound with two DOM trees.\n */\nexport default class DomConverter {\n\t/**\n\t * Creates DOM converter.\n\t *\n\t * @param {Object} options Object with configuration options.\n\t * @param {module:engine/view/filler~BlockFillerMode} [options.blockFillerMode='br'] The type of the block filler to use.\n\t */\n\tconstructor( options = {} ) {\n\t\t/**\n\t\t * The mode of a block filler used by DOM converter.\n\t\t *\n\t\t * @readonly\n\t\t * @member {'br'|'nbsp'} module:engine/view/domconverter~DomConverter#blockFillerMode\n\t\t */\n\t\tthis.blockFillerMode = options.blockFillerMode || 'br';\n\n\t\t/**\n\t\t * Elements which are considered pre-formatted elements.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Array.} module:engine/view/domconverter~DomConverter#preElements\n\t\t */\n\t\tthis.preElements = [ 'pre' ];\n\n\t\t/**\n\t\t * Elements which are considered block elements (and hence should be filled with a\n\t\t * {@link #isBlockFiller block filler}).\n\t\t *\n\t\t * Whether an element is considered a block element also affects handling of trailing whitespaces.\n\t\t *\n\t\t * You can extend this array if you introduce support for block elements which are not yet recognized here.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Array.} module:engine/view/domconverter~DomConverter#blockElements\n\t\t */\n\t\tthis.blockElements = [ 'p', 'div', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'li', 'dd', 'dt', 'figcaption' ];\n\n\t\t/**\n\t\t * Block {@link module:engine/view/filler filler} creator, which is used to create all block fillers during the\n\t\t * view to DOM conversion and to recognize block fillers during the DOM to view conversion.\n\t\t *\n\t\t * @readonly\n\t\t * @private\n\t\t * @member {Function} module:engine/view/domconverter~DomConverter#_blockFiller\n\t\t */\n\t\tthis._blockFiller = this.blockFillerMode == 'br' ? BR_FILLER : NBSP_FILLER;\n\n\t\t/**\n\t\t * DOM to View mapping.\n\t\t *\n\t\t * @private\n\t\t * @member {WeakMap} module:engine/view/domconverter~DomConverter#_domToViewMapping\n\t\t */\n\t\tthis._domToViewMapping = new WeakMap();\n\n\t\t/**\n\t\t * View to DOM mapping.\n\t\t *\n\t\t * @private\n\t\t * @member {WeakMap} module:engine/view/domconverter~DomConverter#_viewToDomMapping\n\t\t */\n\t\tthis._viewToDomMapping = new WeakMap();\n\n\t\t/**\n\t\t * Holds mapping between fake selection containers and corresponding view selections.\n\t\t *\n\t\t * @private\n\t\t * @member {WeakMap} module:engine/view/domconverter~DomConverter#_fakeSelectionMapping\n\t\t */\n\t\tthis._fakeSelectionMapping = new WeakMap();\n\t}\n\n\t/**\n\t * Binds given DOM element that represents fake selection to a **position** of a\n\t * {@link module:engine/view/documentselection~DocumentSelection document selection}.\n\t * Document selection copy is stored and can be retrieved by\n\t * {@link module:engine/view/domconverter~DomConverter#fakeSelectionToView} method.\n\t *\n\t * @param {HTMLElement} domElement\n\t * @param {module:engine/view/documentselection~DocumentSelection} viewDocumentSelection\n\t */\n\tbindFakeSelection( domElement, viewDocumentSelection ) {\n\t\tthis._fakeSelectionMapping.set( domElement, new ViewSelection( viewDocumentSelection ) );\n\t}\n\n\t/**\n\t * Returns {@link module:engine/view/selection~Selection view selection} instance corresponding to\n\t * given DOM element that represents fake selection. Returns `undefined` if binding to given DOM element does not exists.\n\t *\n\t * @param {HTMLElement} domElement\n\t * @returns {module:engine/view/selection~Selection|undefined}\n\t */\n\tfakeSelectionToView( domElement ) {\n\t\treturn this._fakeSelectionMapping.get( domElement );\n\t}\n\n\t/**\n\t * Binds DOM and View elements, so it will be possible to get corresponding elements using\n\t * {@link module:engine/view/domconverter~DomConverter#mapDomToView} and\n\t * {@link module:engine/view/domconverter~DomConverter#mapViewToDom}.\n\t *\n\t * @param {HTMLElement} domElement DOM element to bind.\n\t * @param {module:engine/view/element~Element} viewElement View element to bind.\n\t */\n\tbindElements( domElement, viewElement ) {\n\t\tthis._domToViewMapping.set( domElement, viewElement );\n\t\tthis._viewToDomMapping.set( viewElement, domElement );\n\t}\n\n\t/**\n\t * Unbinds given `domElement` from the view element it was bound to. Unbinding is deep, meaning that all children of\n\t * `domElement` will be unbound too.\n\t *\n\t * @param {HTMLElement} domElement DOM element to unbind.\n\t */\n\tunbindDomElement( domElement ) {\n\t\tconst viewElement = this._domToViewMapping.get( domElement );\n\n\t\tif ( viewElement ) {\n\t\t\tthis._domToViewMapping.delete( domElement );\n\t\t\tthis._viewToDomMapping.delete( viewElement );\n\n\t\t\t// Use Array.from because of MS Edge (#923).\n\t\t\tfor ( const child of Array.from( domElement.childNodes ) ) {\n\t\t\t\tthis.unbindDomElement( child );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Binds DOM and View document fragments, so it will be possible to get corresponding document fragments using\n\t * {@link module:engine/view/domconverter~DomConverter#mapDomToView} and\n\t * {@link module:engine/view/domconverter~DomConverter#mapViewToDom}.\n\t *\n\t * @param {DocumentFragment} domFragment DOM document fragment to bind.\n\t * @param {module:engine/view/documentfragment~DocumentFragment} viewFragment View document fragment to bind.\n\t */\n\tbindDocumentFragments( domFragment, viewFragment ) {\n\t\tthis._domToViewMapping.set( domFragment, viewFragment );\n\t\tthis._viewToDomMapping.set( viewFragment, domFragment );\n\t}\n\n\t/**\n\t * Converts view to DOM. For all text nodes, not bound elements and document fragments new items will\n\t * be created. For bound elements and document fragments function will return corresponding items.\n\t *\n\t * @param {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment} viewNode\n\t * View node or document fragment to transform.\n\t * @param {Document} domDocument Document which will be used to create DOM nodes.\n\t * @param {Object} [options] Conversion options.\n\t * @param {Boolean} [options.bind=false] Determines whether new elements will be bound.\n\t * @param {Boolean} [options.withChildren=true] If `true`, node's and document fragment's children will be converted too.\n\t * @returns {Node|DocumentFragment} Converted node or DocumentFragment.\n\t */\n\tviewToDom( viewNode, domDocument, options = {} ) {\n\t\tif ( viewNode.is( 'text' ) ) {\n\t\t\tconst textData = this._processDataFromViewText( viewNode );\n\n\t\t\treturn domDocument.createTextNode( textData );\n\t\t} else {\n\t\t\tif ( this.mapViewToDom( viewNode ) ) {\n\t\t\t\treturn this.mapViewToDom( viewNode );\n\t\t\t}\n\n\t\t\tlet domElement;\n\n\t\t\tif ( viewNode.is( 'documentFragment' ) ) {\n\t\t\t\t// Create DOM document fragment.\n\t\t\t\tdomElement = domDocument.createDocumentFragment();\n\n\t\t\t\tif ( options.bind ) {\n\t\t\t\t\tthis.bindDocumentFragments( domElement, viewNode );\n\t\t\t\t}\n\t\t\t} else if ( viewNode.is( 'uiElement' ) ) {\n\t\t\t\t// UIElement has its own render() method (see #799).\n\t\t\t\tdomElement = viewNode.render( domDocument );\n\n\t\t\t\tif ( options.bind ) {\n\t\t\t\t\tthis.bindElements( domElement, viewNode );\n\t\t\t\t}\n\n\t\t\t\treturn domElement;\n\t\t\t} else {\n\t\t\t\t// Create DOM element.\n\t\t\t\tif ( viewNode.hasAttribute( 'xmlns' ) ) {\n\t\t\t\t\tdomElement = domDocument.createElementNS( viewNode.getAttribute( 'xmlns' ), viewNode.name );\n\t\t\t\t} else {\n\t\t\t\t\tdomElement = domDocument.createElement( viewNode.name );\n\t\t\t\t}\n\n\t\t\t\tif ( options.bind ) {\n\t\t\t\t\tthis.bindElements( domElement, viewNode );\n\t\t\t\t}\n\n\t\t\t\t// Copy element's attributes.\n\t\t\t\tfor ( const key of viewNode.getAttributeKeys() ) {\n\t\t\t\t\tdomElement.setAttribute( key, viewNode.getAttribute( key ) );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif ( options.withChildren || options.withChildren === undefined ) {\n\t\t\t\tfor ( const child of this.viewChildrenToDom( viewNode, domDocument, options ) ) {\n\t\t\t\t\tdomElement.appendChild( child );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn domElement;\n\t\t}\n\t}\n\n\t/**\n\t * Converts children of the view element to DOM using the\n\t * {@link module:engine/view/domconverter~DomConverter#viewToDom} method.\n\t * Additionally, this method adds block {@link module:engine/view/filler filler} to the list of children, if needed.\n\t *\n\t * @param {module:engine/view/element~Element|module:engine/view/documentfragment~DocumentFragment} viewElement Parent view element.\n\t * @param {Document} domDocument Document which will be used to create DOM nodes.\n\t * @param {Object} options See {@link module:engine/view/domconverter~DomConverter#viewToDom} options parameter.\n\t * @returns {Iterable.} DOM nodes.\n\t */\n\t* viewChildrenToDom( viewElement, domDocument, options = {} ) {\n\t\tconst fillerPositionOffset = viewElement.getFillerOffset && viewElement.getFillerOffset();\n\t\tlet offset = 0;\n\n\t\tfor ( const childView of viewElement.getChildren() ) {\n\t\t\tif ( fillerPositionOffset === offset ) {\n\t\t\t\tyield this._blockFiller( domDocument );\n\t\t\t}\n\n\t\t\tyield this.viewToDom( childView, domDocument, options );\n\n\t\t\toffset++;\n\t\t}\n\n\t\tif ( fillerPositionOffset === offset ) {\n\t\t\tyield this._blockFiller( domDocument );\n\t\t}\n\t}\n\n\t/**\n\t * Converts view {@link module:engine/view/range~Range} to DOM range.\n\t * Inline and block {@link module:engine/view/filler fillers} are handled during the conversion.\n\t *\n\t * @param {module:engine/view/range~Range} viewRange View range.\n\t * @returns {Range} DOM range.\n\t */\n\tviewRangeToDom( viewRange ) {\n\t\tconst domStart = this.viewPositionToDom( viewRange.start );\n\t\tconst domEnd = this.viewPositionToDom( viewRange.end );\n\n\t\tconst domRange = document.createRange();\n\t\tdomRange.setStart( domStart.parent, domStart.offset );\n\t\tdomRange.setEnd( domEnd.parent, domEnd.offset );\n\n\t\treturn domRange;\n\t}\n\n\t/**\n\t * Converts view {@link module:engine/view/position~Position} to DOM parent and offset.\n\t *\n\t * Inline and block {@link module:engine/view/filler fillers} are handled during the conversion.\n\t * If the converted position is directly before inline filler it is moved inside the filler.\n\t *\n\t * @param {module:engine/view/position~Position} viewPosition View position.\n\t * @returns {Object|null} position DOM position or `null` if view position could not be converted to DOM.\n\t * @returns {Node} position.parent DOM position parent.\n\t * @returns {Number} position.offset DOM position offset.\n\t */\n\tviewPositionToDom( viewPosition ) {\n\t\tconst viewParent = viewPosition.parent;\n\n\t\tif ( viewParent.is( 'text' ) ) {\n\t\t\tconst domParent = this.findCorrespondingDomText( viewParent );\n\n\t\t\tif ( !domParent ) {\n\t\t\t\t// Position is in a view text node that has not been rendered to DOM yet.\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\tlet offset = viewPosition.offset;\n\n\t\t\tif ( startsWithFiller( domParent ) ) {\n\t\t\t\toffset += INLINE_FILLER_LENGTH;\n\t\t\t}\n\n\t\t\treturn { parent: domParent, offset };\n\t\t} else {\n\t\t\t// viewParent is instance of ViewElement.\n\t\t\tlet domParent, domBefore, domAfter;\n\n\t\t\tif ( viewPosition.offset === 0 ) {\n\t\t\t\tdomParent = this.mapViewToDom( viewParent );\n\n\t\t\t\tif ( !domParent ) {\n\t\t\t\t\t// Position is in a view element that has not been rendered to DOM yet.\n\t\t\t\t\treturn null;\n\t\t\t\t}\n\n\t\t\t\tdomAfter = domParent.childNodes[ 0 ];\n\t\t\t} else {\n\t\t\t\tconst nodeBefore = viewPosition.nodeBefore;\n\n\t\t\t\tdomBefore = nodeBefore.is( 'text' ) ?\n\t\t\t\t\tthis.findCorrespondingDomText( nodeBefore ) :\n\t\t\t\t\tthis.mapViewToDom( viewPosition.nodeBefore );\n\n\t\t\t\tif ( !domBefore ) {\n\t\t\t\t\t// Position is after a view element that has not been rendered to DOM yet.\n\t\t\t\t\treturn null;\n\t\t\t\t}\n\n\t\t\t\tdomParent = domBefore.parentNode;\n\t\t\t\tdomAfter = domBefore.nextSibling;\n\t\t\t}\n\n\t\t\t// If there is an inline filler at position return position inside the filler. We should never return\n\t\t\t// the position before the inline filler.\n\t\t\tif ( isText( domAfter ) && startsWithFiller( domAfter ) ) {\n\t\t\t\treturn { parent: domAfter, offset: INLINE_FILLER_LENGTH };\n\t\t\t}\n\n\t\t\tconst offset = domBefore ? indexOf( domBefore ) + 1 : 0;\n\n\t\t\treturn { parent: domParent, offset };\n\t\t}\n\t}\n\n\t/**\n\t * Converts DOM to view. For all text nodes, not bound elements and document fragments new items will\n\t * be created. For bound elements and document fragments function will return corresponding items. For\n\t * {@link module:engine/view/filler fillers} `null` will be returned.\n\t * For all DOM elements rendered by {@link module:engine/view/uielement~UIElement} that UIElement will be returned.\n\t *\n\t * @param {Node|DocumentFragment} domNode DOM node or document fragment to transform.\n\t * @param {Object} [options] Conversion options.\n\t * @param {Boolean} [options.bind=false] Determines whether new elements will be bound.\n\t * @param {Boolean} [options.withChildren=true] If `true`, node's and document fragment's children will be converted too.\n\t * @param {Boolean} [options.keepOriginalCase=false] If `false`, node's tag name will be converter to lower case.\n\t * @returns {module:engine/view/node~Node|module:engine/view/documentfragment~DocumentFragment|null} Converted node or document fragment\n\t * or `null` if DOM node is a {@link module:engine/view/filler filler} or the given node is an empty text node.\n\t */\n\tdomToView( domNode, options = {} ) {\n\t\tif ( this.isBlockFiller( domNode, this.blockFillerMode ) ) {\n\t\t\treturn null;\n\t\t}\n\n\t\t// When node is inside UIElement return that UIElement as it's view representation.\n\t\tconst uiElement = this.getParentUIElement( domNode, this._domToViewMapping );\n\n\t\tif ( uiElement ) {\n\t\t\treturn uiElement;\n\t\t}\n\n\t\tif ( isText( domNode ) ) {\n\t\t\tif ( isInlineFiller( domNode ) ) {\n\t\t\t\treturn null;\n\t\t\t} else {\n\t\t\t\tconst textData = this._processDataFromDomText( domNode );\n\n\t\t\t\treturn textData === '' ? null : new ViewText( textData );\n\t\t\t}\n\t\t} else if ( this.isComment( domNode ) ) {\n\t\t\treturn null;\n\t\t} else {\n\t\t\tif ( this.mapDomToView( domNode ) ) {\n\t\t\t\treturn this.mapDomToView( domNode );\n\t\t\t}\n\n\t\t\tlet viewElement;\n\n\t\t\tif ( this.isDocumentFragment( domNode ) ) {\n\t\t\t\t// Create view document fragment.\n\t\t\t\tviewElement = new ViewDocumentFragment();\n\n\t\t\t\tif ( options.bind ) {\n\t\t\t\t\tthis.bindDocumentFragments( domNode, viewElement );\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\t// Create view element.\n\t\t\t\tconst viewName = options.keepOriginalCase ? domNode.tagName : domNode.tagName.toLowerCase();\n\t\t\t\tviewElement = new ViewElement( viewName );\n\n\t\t\t\tif ( options.bind ) {\n\t\t\t\t\tthis.bindElements( domNode, viewElement );\n\t\t\t\t}\n\n\t\t\t\t// Copy element's attributes.\n\t\t\t\tconst attrs = domNode.attributes;\n\n\t\t\t\tfor ( let i = attrs.length - 1; i >= 0; i-- ) {\n\t\t\t\t\tviewElement._setAttribute( attrs[ i ].name, attrs[ i ].value );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif ( options.withChildren || options.withChildren === undefined ) {\n\t\t\t\tfor ( const child of this.domChildrenToView( domNode, options ) ) {\n\t\t\t\t\tviewElement._appendChild( child );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn viewElement;\n\t\t}\n\t}\n\n\t/**\n\t * Converts children of the DOM element to view nodes using\n\t * the {@link module:engine/view/domconverter~DomConverter#domToView} method.\n\t * Additionally this method omits block {@link module:engine/view/filler filler}, if it exists in the DOM parent.\n\t *\n\t * @param {HTMLElement} domElement Parent DOM element.\n\t * @param {Object} options See {@link module:engine/view/domconverter~DomConverter#domToView} options parameter.\n\t * @returns {Iterable.} View nodes.\n\t */\n\t* domChildrenToView( domElement, options = {} ) {\n\t\tfor ( let i = 0; i < domElement.childNodes.length; i++ ) {\n\t\t\tconst domChild = domElement.childNodes[ i ];\n\t\t\tconst viewChild = this.domToView( domChild, options );\n\n\t\t\tif ( viewChild !== null ) {\n\t\t\t\tyield viewChild;\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Converts DOM selection to view {@link module:engine/view/selection~Selection}.\n\t * Ranges which cannot be converted will be omitted.\n\t *\n\t * @param {Selection} domSelection DOM selection.\n\t * @returns {module:engine/view/selection~Selection} View selection.\n\t */\n\tdomSelectionToView( domSelection ) {\n\t\t// DOM selection might be placed in fake selection container.\n\t\t// If container contains fake selection - return corresponding view selection.\n\t\tif ( domSelection.rangeCount === 1 ) {\n\t\t\tlet container = domSelection.getRangeAt( 0 ).startContainer;\n\n\t\t\t// The DOM selection might be moved to the text node inside the fake selection container.\n\t\t\tif ( isText( container ) ) {\n\t\t\t\tcontainer = container.parentNode;\n\t\t\t}\n\n\t\t\tconst viewSelection = this.fakeSelectionToView( container );\n\n\t\t\tif ( viewSelection ) {\n\t\t\t\treturn viewSelection;\n\t\t\t}\n\t\t}\n\n\t\tconst isBackward = this.isDomSelectionBackward( domSelection );\n\n\t\tconst viewRanges = [];\n\n\t\tfor ( let i = 0; i < domSelection.rangeCount; i++ ) {\n\t\t\t// DOM Range have correct start and end, no matter what is the DOM Selection direction. So we don't have to fix anything.\n\t\t\tconst domRange = domSelection.getRangeAt( i );\n\t\t\tconst viewRange = this.domRangeToView( domRange );\n\n\t\t\tif ( viewRange ) {\n\t\t\t\tviewRanges.push( viewRange );\n\t\t\t}\n\t\t}\n\n\t\treturn new ViewSelection( viewRanges, { backward: isBackward } );\n\t}\n\n\t/**\n\t * Converts DOM Range to view {@link module:engine/view/range~Range}.\n\t * If the start or end position can not be converted `null` is returned.\n\t *\n\t * @param {Range} domRange DOM range.\n\t * @returns {module:engine/view/range~Range|null} View range.\n\t */\n\tdomRangeToView( domRange ) {\n\t\tconst viewStart = this.domPositionToView( domRange.startContainer, domRange.startOffset );\n\t\tconst viewEnd = this.domPositionToView( domRange.endContainer, domRange.endOffset );\n\n\t\tif ( viewStart && viewEnd ) {\n\t\t\treturn new ViewRange( viewStart, viewEnd );\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Converts DOM parent and offset to view {@link module:engine/view/position~Position}.\n\t *\n\t * If the position is inside a {@link module:engine/view/filler filler} which has no corresponding view node,\n\t * position of the filler will be converted and returned.\n\t *\n\t * If the position is inside DOM element rendered by {@link module:engine/view/uielement~UIElement}\n\t * that position will be converted to view position before that UIElement.\n\t *\n\t * If structures are too different and it is not possible to find corresponding position then `null` will be returned.\n\t *\n\t * @param {Node} domParent DOM position parent.\n\t * @param {Number} domOffset DOM position offset.\n\t * @returns {module:engine/view/position~Position} viewPosition View position.\n\t */\n\tdomPositionToView( domParent, domOffset ) {\n\t\tif ( this.isBlockFiller( domParent, this.blockFillerMode ) ) {\n\t\t\treturn this.domPositionToView( domParent.parentNode, indexOf( domParent ) );\n\t\t}\n\n\t\t// If position is somewhere inside UIElement - return position before that element.\n\t\tconst viewElement = this.mapDomToView( domParent );\n\n\t\tif ( viewElement && viewElement.is( 'uiElement' ) ) {\n\t\t\treturn ViewPosition._createBefore( viewElement );\n\t\t}\n\n\t\tif ( isText( domParent ) ) {\n\t\t\tif ( isInlineFiller( domParent ) ) {\n\t\t\t\treturn this.domPositionToView( domParent.parentNode, indexOf( domParent ) );\n\t\t\t}\n\n\t\t\tconst viewParent = this.findCorrespondingViewText( domParent );\n\t\t\tlet offset = domOffset;\n\n\t\t\tif ( !viewParent ) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\tif ( startsWithFiller( domParent ) ) {\n\t\t\t\toffset -= INLINE_FILLER_LENGTH;\n\t\t\t\toffset = offset < 0 ? 0 : offset;\n\t\t\t}\n\n\t\t\treturn new ViewPosition( viewParent, offset );\n\t\t}\n\t\t// domParent instanceof HTMLElement.\n\t\telse {\n\t\t\tif ( domOffset === 0 ) {\n\t\t\t\tconst viewParent = this.mapDomToView( domParent );\n\n\t\t\t\tif ( viewParent ) {\n\t\t\t\t\treturn new ViewPosition( viewParent, 0 );\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tconst domBefore = domParent.childNodes[ domOffset - 1 ];\n\t\t\t\tconst viewBefore = isText( domBefore ) ?\n\t\t\t\t\tthis.findCorrespondingViewText( domBefore ) :\n\t\t\t\t\tthis.mapDomToView( domBefore );\n\n\t\t\t\t// TODO #663\n\t\t\t\tif ( viewBefore && viewBefore.parent ) {\n\t\t\t\t\treturn new ViewPosition( viewBefore.parent, viewBefore.index + 1 );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn null;\n\t\t}\n\t}\n\n\t/**\n\t * Returns corresponding view {@link module:engine/view/element~Element Element} or\n\t * {@link module:engine/view/documentfragment~DocumentFragment} for provided DOM element or\n\t * document fragment. If there is no view item {@link module:engine/view/domconverter~DomConverter#bindElements bound}\n\t * to the given DOM - `undefined` is returned.\n\t * For all DOM elements rendered by {@link module:engine/view/uielement~UIElement} that UIElement will be returned.\n\t *\n\t * @param {DocumentFragment|Element} domElementOrDocumentFragment DOM element or document fragment.\n\t * @returns {module:engine/view/element~Element|module:engine/view/documentfragment~DocumentFragment|undefined}\n\t * Corresponding view element, document fragment or `undefined` if no element was bound.\n\t */\n\tmapDomToView( domElementOrDocumentFragment ) {\n\t\treturn this.getParentUIElement( domElementOrDocumentFragment ) || this._domToViewMapping.get( domElementOrDocumentFragment );\n\t}\n\n\t/**\n\t * Finds corresponding text node. Text nodes are not {@link module:engine/view/domconverter~DomConverter#bindElements bound},\n\t * corresponding text node is returned based on the sibling or parent.\n\t *\n\t * If the directly previous sibling is a {@link module:engine/view/domconverter~DomConverter#bindElements bound} element, it is used\n\t * to find the corresponding text node.\n\t *\n\t * If this is a first child in the parent and the parent is a {@link module:engine/view/domconverter~DomConverter#bindElements bound}\n\t * element, it is used to find the corresponding text node.\n\t *\n\t * For all text nodes rendered by {@link module:engine/view/uielement~UIElement} that UIElement will be returned.\n\t *\n\t * Otherwise `null` is returned.\n\t *\n\t * Note that for the block or inline {@link module:engine/view/filler filler} this method returns `null`.\n\t *\n\t * @param {Text} domText DOM text node.\n\t * @returns {module:engine/view/text~Text|null} Corresponding view text node or `null`, if it was not possible to find a\n\t * corresponding node.\n\t */\n\tfindCorrespondingViewText( domText ) {\n\t\tif ( isInlineFiller( domText ) ) {\n\t\t\treturn null;\n\t\t}\n\n\t\t// If DOM text was rendered by UIElement - return that element.\n\t\tconst uiElement = this.getParentUIElement( domText );\n\n\t\tif ( uiElement ) {\n\t\t\treturn uiElement;\n\t\t}\n\n\t\tconst previousSibling = domText.previousSibling;\n\n\t\t// Try to use previous sibling to find the corresponding text node.\n\t\tif ( previousSibling ) {\n\t\t\tif ( !( this.isElement( previousSibling ) ) ) {\n\t\t\t\t// The previous is text or comment.\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\tconst viewElement = this.mapDomToView( previousSibling );\n\n\t\t\tif ( viewElement ) {\n\t\t\t\tconst nextSibling = viewElement.nextSibling;\n\n\t\t\t\t// It might be filler which has no corresponding view node.\n\t\t\t\tif ( nextSibling instanceof ViewText ) {\n\t\t\t\t\treturn viewElement.nextSibling;\n\t\t\t\t} else {\n\t\t\t\t\treturn null;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t\t// Try to use parent to find the corresponding text node.\n\t\telse {\n\t\t\tconst viewElement = this.mapDomToView( domText.parentNode );\n\n\t\t\tif ( viewElement ) {\n\t\t\t\tconst firstChild = viewElement.getChild( 0 );\n\n\t\t\t\t// It might be filler which has no corresponding view node.\n\t\t\t\tif ( firstChild instanceof ViewText ) {\n\t\t\t\t\treturn firstChild;\n\t\t\t\t} else {\n\t\t\t\t\treturn null;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Returns corresponding DOM item for provided {@link module:engine/view/element~Element Element} or\n\t * {@link module:engine/view/documentfragment~DocumentFragment DocumentFragment}.\n\t * To find a corresponding text for {@link module:engine/view/text~Text view Text instance}\n\t * use {@link #findCorrespondingDomText}.\n\t *\n\t * @param {module:engine/view/element~Element|module:engine/view/documentfragment~DocumentFragment} viewNode\n\t * View element or document fragment.\n\t * @returns {Node|DocumentFragment|undefined} Corresponding DOM node or document fragment.\n\t */\n\tmapViewToDom( documentFragmentOrElement ) {\n\t\treturn this._viewToDomMapping.get( documentFragmentOrElement );\n\t}\n\n\t/**\n\t * Finds corresponding text node. Text nodes are not {@link module:engine/view/domconverter~DomConverter#bindElements bound},\n\t * corresponding text node is returned based on the sibling or parent.\n\t *\n\t * If the directly previous sibling is a {@link module:engine/view/domconverter~DomConverter#bindElements bound} element, it is used\n\t * to find the corresponding text node.\n\t *\n\t * If this is a first child in the parent and the parent is a {@link module:engine/view/domconverter~DomConverter#bindElements bound}\n\t * element, it is used to find the corresponding text node.\n\t *\n\t * Otherwise `null` is returned.\n\t *\n\t * @param {module:engine/view/text~Text} viewText View text node.\n\t * @returns {Text|null} Corresponding DOM text node or `null`, if it was not possible to find a corresponding node.\n\t */\n\tfindCorrespondingDomText( viewText ) {\n\t\tconst previousSibling = viewText.previousSibling;\n\n\t\t// Try to use previous sibling to find the corresponding text node.\n\t\tif ( previousSibling && this.mapViewToDom( previousSibling ) ) {\n\t\t\treturn this.mapViewToDom( previousSibling ).nextSibling;\n\t\t}\n\n\t\t// If this is a first node, try to use parent to find the corresponding text node.\n\t\tif ( !previousSibling && viewText.parent && this.mapViewToDom( viewText.parent ) ) {\n\t\t\treturn this.mapViewToDom( viewText.parent ).childNodes[ 0 ];\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Focuses DOM editable that is corresponding to provided {@link module:engine/view/editableelement~EditableElement}.\n\t *\n\t * @param {module:engine/view/editableelement~EditableElement} viewEditable\n\t */\n\tfocus( viewEditable ) {\n\t\tconst domEditable = this.mapViewToDom( viewEditable );\n\n\t\tif ( domEditable && domEditable.ownerDocument.activeElement !== domEditable ) {\n\t\t\t// Save the scrollX and scrollY positions before the focus.\n\t\t\tconst { scrollX, scrollY } = global.window;\n\t\t\tconst scrollPositions = [];\n\n\t\t\t// Save all scrollLeft and scrollTop values starting from domEditable up to\n\t\t\t// document#documentElement.\n\t\t\tforEachDomNodeAncestor( domEditable, node => {\n\t\t\t\tconst { scrollLeft, scrollTop } = node;\n\n\t\t\t\tscrollPositions.push( [ scrollLeft, scrollTop ] );\n\t\t\t} );\n\n\t\t\tdomEditable.focus();\n\n\t\t\t// Restore scrollLeft and scrollTop values starting from domEditable up to\n\t\t\t// document#documentElement.\n\t\t\t// https://github.com/ckeditor/ckeditor5-engine/issues/951\n\t\t\t// https://github.com/ckeditor/ckeditor5-engine/issues/957\n\t\t\tforEachDomNodeAncestor( domEditable, node => {\n\t\t\t\tconst [ scrollLeft, scrollTop ] = scrollPositions.shift();\n\n\t\t\t\tnode.scrollLeft = scrollLeft;\n\t\t\t\tnode.scrollTop = scrollTop;\n\t\t\t} );\n\n\t\t\t// Restore the scrollX and scrollY positions after the focus.\n\t\t\t// https://github.com/ckeditor/ckeditor5-engine/issues/951\n\t\t\tglobal.window.scrollTo( scrollX, scrollY );\n\t\t}\n\t}\n\n\t/**\n\t * Returns `true` when `node.nodeType` equals `Node.ELEMENT_NODE`.\n\t *\n\t * @param {Node} node Node to check.\n\t * @returns {Boolean}\n\t */\n\tisElement( node ) {\n\t\treturn node && node.nodeType == Node.ELEMENT_NODE;\n\t}\n\n\t/**\n\t * Returns `true` when `node.nodeType` equals `Node.DOCUMENT_FRAGMENT_NODE`.\n\t *\n\t * @param {Node} node Node to check.\n\t * @returns {Boolean}\n\t */\n\tisDocumentFragment( node ) {\n\t\treturn node && node.nodeType == Node.DOCUMENT_FRAGMENT_NODE;\n\t}\n\n\t/**\n\t * Returns `true` when `node.nodeType` equals `Node.COMMENT_NODE`.\n\t *\n\t * @param {Node} node Node to check.\n\t * @returns {Boolean}\n\t */\n\tisComment( node ) {\n\t\treturn node && node.nodeType == Node.COMMENT_NODE;\n\t}\n\n\t/**\n\t * Checks if the node is an instance of the block filler for this DOM converter.\n\t *\n\t *\t\tconst converter = new DomConverter( { blockFillerMode: 'br' } );\n\t *\n\t *\t\tconverter.isBlockFiller( BR_FILLER( document ) ); // true\n\t *\t\tconverter.isBlockFiller( NBSP_FILLER( document ) ); // false\n\t *\n\t * **Note:**: For the `'nbsp'` mode the method also checks context of a node so it cannot be a detached node.\n\t *\n\t * @param {Node} domNode DOM node to check.\n\t * @returns {Boolean} True if a node is considered a block filler for given mode.\n\t */\n\tisBlockFiller( domNode ) {\n\t\treturn this.blockFillerMode == 'br' ? domNode.isEqualNode( BR_FILLER_REF ) : isNbspBlockFiller( domNode, this.blockElements );\n\t}\n\n\t/**\n\t * Returns `true` if given selection is a backward selection, that is, if it's `focus` is before `anchor`.\n\t *\n\t * @param {Selection} DOM Selection instance to check.\n\t * @returns {Boolean}\n\t */\n\tisDomSelectionBackward( selection ) {\n\t\tif ( selection.isCollapsed ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Since it takes multiple lines of code to check whether a \"DOM Position\" is before/after another \"DOM Position\",\n\t\t// we will use the fact that range will collapse if it's end is before it's start.\n\t\tconst range = document.createRange();\n\n\t\trange.setStart( selection.anchorNode, selection.anchorOffset );\n\t\trange.setEnd( selection.focusNode, selection.focusOffset );\n\n\t\tconst backward = range.collapsed;\n\n\t\trange.detach();\n\n\t\treturn backward;\n\t}\n\n\t/**\n\t * Returns parent {@link module:engine/view/uielement~UIElement} for provided DOM node. Returns `null` if there is no\n\t * parent UIElement.\n\t *\n\t * @param {Node} domNode\n\t * @returns {module:engine/view/uielement~UIElement|null}\n\t */\n\tgetParentUIElement( domNode ) {\n\t\tconst ancestors = getAncestors( domNode );\n\n\t\t// Remove domNode from the list.\n\t\tancestors.pop();\n\n\t\twhile ( ancestors.length ) {\n\t\t\tconst domNode = ancestors.pop();\n\t\t\tconst viewNode = this._domToViewMapping.get( domNode );\n\n\t\t\tif ( viewNode && viewNode.is( 'uiElement' ) ) {\n\t\t\t\treturn viewNode;\n\t\t\t}\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Checks if given selection's boundaries are at correct places.\n\t *\n\t * The following places are considered as incorrect for selection boundaries:\n\t * * before or in the middle of the inline filler sequence,\n\t * * inside the DOM element which represents {@link module:engine/view/uielement~UIElement a view ui element}.\n\t *\n\t * @param {Selection} domSelection DOM Selection object to be checked.\n\t * @returns {Boolean} `true` if the given selection is at a correct place, `false` otherwise.\n\t */\n\tisDomSelectionCorrect( domSelection ) {\n\t\treturn this._isDomSelectionPositionCorrect( domSelection.anchorNode, domSelection.anchorOffset ) &&\n\t\t\tthis._isDomSelectionPositionCorrect( domSelection.focusNode, domSelection.focusOffset );\n\t}\n\n\t/**\n\t * Checks if the given DOM position is a correct place for selection boundary. See {@link #isDomSelectionCorrect}.\n\t *\n\t * @private\n\t * @param {Element} domParent Position parent.\n\t * @param {Number} offset Position offset.\n\t * @returns {Boolean} `true` if given position is at a correct place for selection boundary, `false` otherwise.\n\t */\n\t_isDomSelectionPositionCorrect( domParent, offset ) {\n\t\t// If selection is before or in the middle of inline filler string, it is incorrect.\n\t\tif ( isText( domParent ) && startsWithFiller( domParent ) && offset < INLINE_FILLER_LENGTH ) {\n\t\t\t// Selection in a text node, at wrong position (before or in the middle of filler).\n\t\t\treturn false;\n\t\t}\n\n\t\tif ( this.isElement( domParent ) && startsWithFiller( domParent.childNodes[ offset ] ) ) {\n\t\t\t// Selection in an element node, before filler text node.\n\t\t\treturn false;\n\t\t}\n\n\t\tconst viewParent = this.mapDomToView( domParent );\n\n\t\t// If selection is in `view.UIElement`, it is incorrect. Note that `mapDomToView()` returns `view.UIElement`\n\t\t// also for any dom element that is inside the view ui element (so we don't need to perform any additional checks).\n\t\tif ( viewParent && viewParent.is( 'uiElement' ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Takes text data from a given {@link module:engine/view/text~Text#data} and processes it so\n\t * it is correctly displayed in the DOM.\n\t *\n\t * Following changes are done:\n\t *\n\t * * a space at the beginning is changed to ` ` if this is the first text node in its container\n\t * element or if a previous text node ends with a space character,\n\t * * space at the end of the text node is changed to ` ` if there are two spaces at the end of a node or if next node\n\t * starts with a space or if it is the last text node in its container,\n\t * * remaining spaces are replaced to a chain of spaces and ` ` (e.g. `'x x'` becomes `'x   x'`).\n\t *\n\t * Content of {@link #preElements} is not processed.\n\t *\n\t * @private\n\t * @param {module:engine/view/text~Text} node View text node to process.\n\t * @returns {String} Processed text data.\n\t */\n\t_processDataFromViewText( node ) {\n\t\tlet data = node.data;\n\n\t\t// If any of node ancestors has a name which is in `preElements` array, then currently processed\n\t\t// view text node is (will be) in preformatted element. We should not change whitespaces then.\n\t\tif ( node.getAncestors().some( parent => this.preElements.includes( parent.name ) ) ) {\n\t\t\treturn data;\n\t\t}\n\n\t\t// 1. Replace the first space with a nbsp if the previous node ends with a space or there is no previous node\n\t\t// (container element boundary).\n\t\tif ( data.charAt( 0 ) == ' ' ) {\n\t\t\tconst prevNode = this._getTouchingViewTextNode( node, false );\n\t\t\tconst prevEndsWithSpace = prevNode && this._nodeEndsWithSpace( prevNode );\n\n\t\t\tif ( prevEndsWithSpace || !prevNode ) {\n\t\t\t\tdata = '\\u00A0' + data.substr( 1 );\n\t\t\t}\n\t\t}\n\n\t\t// 2. Replace the last space with nbsp if there are two spaces at the end or if the next node starts with space or there is no\n\t\t// next node (container element boundary).\n\t\t//\n\t\t// Keep in mind that Firefox prefers $nbsp; before tag, not inside it:\n\t\t//\n\t\t// Foo  bar <-- bad.\n\t\t// Foo  bar <-- good.\n\t\t//\n\t\t// More here: https://github.com/ckeditor/ckeditor5-engine/issues/1747.\n\t\tif ( data.charAt( data.length - 1 ) == ' ' ) {\n\t\t\tconst nextNode = this._getTouchingViewTextNode( node, true );\n\n\t\t\tif ( data.charAt( data.length - 2 ) == ' ' || !nextNode || nextNode.data.charAt( 0 ) == ' ' ) {\n\t\t\t\tdata = data.substr( 0, data.length - 1 ) + '\\u00A0';\n\t\t\t}\n\t\t}\n\n\t\t// 3. Create space+nbsp pairs.\n\t\treturn data.replace( / {2}/g, ' \\u00A0' );\n\t}\n\n\t/**\n\t * Checks whether given node ends with a space character after changing appropriate space characters to ` `s.\n\t *\n\t * @private\n\t * @param {module:engine/view/text~Text} node Node to check.\n\t * @returns {Boolean} `true` if given `node` ends with space, `false` otherwise.\n\t */\n\t_nodeEndsWithSpace( node ) {\n\t\tif ( node.getAncestors().some( parent => this.preElements.includes( parent.name ) ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tconst data = this._processDataFromViewText( node );\n\n\t\treturn data.charAt( data.length - 1 ) == ' ';\n\t}\n\n\t/**\n\t * Takes text data from native `Text` node and processes it to a correct {@link module:engine/view/text~Text view text node} data.\n\t *\n\t * Following changes are done:\n\t *\n\t * * multiple whitespaces are replaced to a single space,\n\t * * space at the beginning of a text node is removed if it is the first text node in its container\n\t * element or if the previous text node ends with a space character,\n\t * * space at the end of the text node is removed if there are two spaces at the end of a node or if next node\n\t * starts with a space or if it is the last text node in its container\n\t * * nbsps are converted to spaces.\n\t *\n\t * @param {Node} node DOM text node to process.\n\t * @returns {String} Processed data.\n\t * @private\n\t */\n\t_processDataFromDomText( node ) {\n\t\tlet data = node.data;\n\n\t\tif ( _hasDomParentOfType( node, this.preElements ) ) {\n\t\t\treturn getDataWithoutFiller( node );\n\t\t}\n\n\t\t// Change all consecutive whitespace characters (from the [ \\n\\t\\r] set –\n\t\t// see https://github.com/ckeditor/ckeditor5-engine/issues/822#issuecomment-311670249) to a single space character.\n\t\t// That's how multiple whitespaces are treated when rendered, so we normalize those whitespaces.\n\t\t// We're replacing 1+ (and not 2+) to also normalize singular \\n\\t\\r characters (#822).\n\t\tdata = data.replace( /[ \\n\\t\\r]{1,}/g, ' ' );\n\n\t\tconst prevNode = this._getTouchingInlineDomNode( node, false );\n\t\tconst nextNode = this._getTouchingInlineDomNode( node, true );\n\n\t\tconst shouldLeftTrim = this._checkShouldLeftTrimDomText( prevNode );\n\t\tconst shouldRightTrim = this._checkShouldRightTrimDomText( node, nextNode );\n\n\t\t// If the previous dom text node does not exist or it ends by whitespace character, remove space character from the beginning\n\t\t// of this text node. Such space character is treated as a whitespace.\n\t\tif ( shouldLeftTrim ) {\n\t\t\tdata = data.replace( /^ /, '' );\n\t\t}\n\n\t\t// If the next text node does not exist remove space character from the end of this text node.\n\t\tif ( shouldRightTrim ) {\n\t\t\tdata = data.replace( / $/, '' );\n\t\t}\n\n\t\t// At the beginning and end of a block element, Firefox inserts normal space +
instead of non-breaking space.\n\t\t// This means that the text node starts/end with normal space instead of non-breaking space.\n\t\t// This causes a problem because the normal space would be removed in `.replace` calls above. To prevent that,\n\t\t// the inline filler is removed only after the data is initially processed (by the `.replace` above). See ckeditor5#692.\n\t\tdata = getDataWithoutFiller( new Text( data ) );\n\n\t\t// At this point we should have removed all whitespaces from DOM text data.\n\t\t//\n\t\t// Now, We will reverse the process that happens in `_processDataFromViewText`.\n\t\t//\n\t\t// We have to change   chars, that were in DOM text data because of rendering reasons, to spaces.\n\t\t// First, change all ` \\u00A0` pairs (space +  ) to two spaces. DOM converter changes two spaces from model/view to\n\t\t// ` \\u00A0` to ensure proper rendering. Since here we convert back, we recognize those pairs and change them back to ` `.\n\t\tdata = data.replace( / \\u00A0/g, ' ' );\n\n\t\t// Then, let's change the last nbsp to a space.\n\t\tif ( /( |\\u00A0)\\u00A0$/.test( data ) || !nextNode || ( nextNode.data && nextNode.data.charAt( 0 ) == ' ' ) ) {\n\t\t\tdata = data.replace( /\\u00A0$/, ' ' );\n\t\t}\n\n\t\t// Then, change   character that is at the beginning of the text node to space character.\n\t\t// We do that replacement only if this is the first node or the previous node ends on whitespace character.\n\t\tif ( shouldLeftTrim ) {\n\t\t\tdata = data.replace( /^\\u00A0/, ' ' );\n\t\t}\n\n\t\t// At this point, all whitespaces should be removed and all   created for rendering reasons should be\n\t\t// changed to normal space. All left   are   inserted intentionally.\n\t\treturn data;\n\t}\n\n\t/**\n\t * Helper function which checks if a DOM text node, preceded by the given `prevNode` should\n\t * be trimmed from the left side.\n\t *\n\t * @param {Node} prevNode\n\t */\n\t_checkShouldLeftTrimDomText( prevNode ) {\n\t\tif ( !prevNode ) {\n\t\t\treturn true;\n\t\t}\n\n\t\tif ( isElement( prevNode ) ) {\n\t\t\treturn true;\n\t\t}\n\n\t\treturn /[^\\S\\u00A0]/.test( prevNode.data.charAt( prevNode.data.length - 1 ) );\n\t}\n\n\t/**\n\t * Helper function which checks if a DOM text node, succeeded by the given `nextNode` should\n\t * be trimmed from the right side.\n\t *\n\t * @param {Node} node\n\t * @param {Node} nextNode\n\t */\n\t_checkShouldRightTrimDomText( node, nextNode ) {\n\t\tif ( nextNode ) {\n\t\t\treturn false;\n\t\t}\n\n\t\treturn !startsWithFiller( node );\n\t}\n\n\t/**\n\t * Helper function. For given {@link module:engine/view/text~Text view text node}, it finds previous or next sibling\n\t * that is contained in the same container element. If there is no such sibling, `null` is returned.\n\t *\n\t * @param {module:engine/view/text~Text} node Reference node.\n\t * @param {Boolean} getNext\n\t * @returns {module:engine/view/text~Text|null} Touching text node or `null` if there is no next or previous touching text node.\n\t */\n\t_getTouchingViewTextNode( node, getNext ) {\n\t\tconst treeWalker = new ViewTreeWalker( {\n\t\t\tstartPosition: getNext ? ViewPosition._createAfter( node ) : ViewPosition._createBefore( node ),\n\t\t\tdirection: getNext ? 'forward' : 'backward'\n\t\t} );\n\n\t\tfor ( const value of treeWalker ) {\n\t\t\t// ViewContainerElement is found on a way to next ViewText node, so given `node` was first/last\n\t\t\t// text node in its container element.\n\t\t\tif ( value.item.is( 'containerElement' ) ) {\n\t\t\t\treturn null;\n\t\t\t}\n\t\t\t//
found – it works like a block boundary, so do not scan further.\n\t\t\telse if ( value.item.is( 'br' ) ) {\n\t\t\t\treturn null;\n\t\t\t}\n\t\t\t// Found a text node in the same container element.\n\t\t\telse if ( value.item.is( 'textProxy' ) ) {\n\t\t\t\treturn value.item;\n\t\t\t}\n\t\t}\n\n\t\treturn null;\n\t}\n\n\t/**\n\t * Helper function. For the given text node, it finds the closest touching node which is either\n\t * a text node or a `
`. The search is terminated at block element boundaries and if a matching node\n\t * wasn't found so far, `null` is returned.\n\t *\n\t * In the following DOM structure:\n\t *\n\t *\t\t

foobar
bom

\n\t *\n\t * * `foo` doesn't have its previous touching inline node (`null` is returned),\n\t * * `foo`'s next touching inline node is `bar`\n\t * * `bar`'s next touching inline node is `
`\n\t *\n\t * This method returns text nodes and `
` elements because these types of nodes affect how\n\t * spaces in the given text node need to be converted.\n\t *\n\t * @private\n\t * @param {Text} node\n\t * @param {Boolean} getNext\n\t * @returns {Text|Element|null}\n\t */\n\t_getTouchingInlineDomNode( node, getNext ) {\n\t\tif ( !node.parentNode ) {\n\t\t\treturn null;\n\t\t}\n\n\t\tconst direction = getNext ? 'nextNode' : 'previousNode';\n\t\tconst document = node.ownerDocument;\n\t\tconst topmostParent = getAncestors( node )[ 0 ];\n\n\t\tconst treeWalker = document.createTreeWalker( topmostParent, NodeFilter.SHOW_TEXT | NodeFilter.SHOW_ELEMENT, {\n\t\t\tacceptNode( node ) {\n\t\t\t\tif ( isText( node ) ) {\n\t\t\t\t\treturn NodeFilter.FILTER_ACCEPT;\n\t\t\t\t}\n\n\t\t\t\tif ( node.tagName == 'BR' ) {\n\t\t\t\t\treturn NodeFilter.FILTER_ACCEPT;\n\t\t\t\t}\n\n\t\t\t\treturn NodeFilter.FILTER_SKIP;\n\t\t\t}\n\t\t} );\n\n\t\ttreeWalker.currentNode = node;\n\n\t\tconst touchingNode = treeWalker[ direction ]();\n\n\t\tif ( touchingNode !== null ) {\n\t\t\tconst lca = getCommonAncestor( node, touchingNode );\n\n\t\t\t// If there is common ancestor between the text node and next/prev text node,\n\t\t\t// and there are no block elements on a way from the text node to that ancestor,\n\t\t\t// and there are no block elements on a way from next/prev text node to that ancestor...\n\t\t\tif (\n\t\t\t\tlca &&\n\t\t\t\t!_hasDomParentOfType( node, this.blockElements, lca ) &&\n\t\t\t\t!_hasDomParentOfType( touchingNode, this.blockElements, lca )\n\t\t\t) {\n\t\t\t\t// Then they are in the same container element.\n\t\t\t\treturn touchingNode;\n\t\t\t}\n\t\t}\n\n\t\treturn null;\n\t}\n}\n\n// Helper function.\n// Used to check if given native `Element` or `Text` node has parent with tag name from `types` array.\n//\n// @param {Node} node\n// @param {Array.} types\n// @param {Boolean} [boundaryParent] Can be given if parents should be checked up to a given element (excluding that element).\n// @returns {Boolean} `true` if such parent exists or `false` if it does not.\nfunction _hasDomParentOfType( node, types, boundaryParent ) {\n\tlet parents = getAncestors( node );\n\n\tif ( boundaryParent ) {\n\t\tparents = parents.slice( parents.indexOf( boundaryParent ) + 1 );\n\t}\n\n\treturn parents.some( parent => parent.tagName && types.includes( parent.tagName.toLowerCase() ) );\n}\n\n// A helper that executes given callback for each DOM node's ancestor, starting from the given node\n// and ending in document#documentElement.\n//\n// @param {Node} node\n// @param {Function} callback A callback to be executed for each ancestor.\nfunction forEachDomNodeAncestor( node, callback ) {\n\twhile ( node && node != global.document ) {\n\t\tcallback( node );\n\t\tnode = node.parentNode;\n\t}\n}\n\n// Checks if given node is a nbsp block filler.\n//\n// A   is a block filler only if it is a single child of a block element.\n//\n// @param {Node} domNode DOM node.\n// @returns {Boolean}\nfunction isNbspBlockFiller( domNode, blockElements ) {\n\tconst isNBSP = isText( domNode ) && domNode.data == '\\u00A0';\n\n\treturn isNBSP && hasBlockParent( domNode, blockElements ) && domNode.parentNode.childNodes.length === 1;\n}\n\n// Checks if domNode has block parent.\n//\n// @param {Node} domNode DOM node.\n// @returns {Boolean}\nfunction hasBlockParent( domNode, blockElements ) {\n\tconst parent = domNode.parentNode;\n\n\treturn parent && parent.tagName && blockElements.includes( parent.tagName.toLowerCase() );\n}\n\n/**\n * Enum representing type of the block filler.\n *\n * Possible values:\n *\n * * `br` - for `
` block filler used in editing view,\n * * `nbsp` - for ` ` block fillers used in the data.\n *\n * @typedef {String} module:engine/view/filler~BlockFillerMode\n */\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module utils/dom/getcommonancestor\n */\n\nimport getAncestors from './getancestors';\n\n/**\n * Searches and returns the lowest common ancestor of two given nodes.\n *\n * @param {Node} nodeA First node.\n * @param {Node} nodeB Second node.\n * @returns {Node|DocumentFragment|Document|null} Lowest common ancestor of both nodes or `null` if nodes do not have a common ancestor.\n */\nexport default function getCommonAncestor( nodeA, nodeB ) {\n\tconst ancestorsA = getAncestors( nodeA );\n\tconst ancestorsB = getAncestors( nodeB );\n\n\tlet i = 0;\n\n\t// It does not matter which array is shorter.\n\twhile ( ancestorsA[ i ] == ancestorsB[ i ] && ancestorsA[ i ] ) {\n\t\ti++;\n\t}\n\n\treturn i === 0 ? null : ancestorsA[ i - 1 ];\n}\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module utils/dom/iswindow\n */\n\n/**\n * Checks if the object is a native DOM Window.\n *\n * @param {*} obj\n * @returns {Boolean}\n */\nexport default function isWindow( obj ) {\n\tconst stringifiedObject = Object.prototype.toString.apply( obj );\n\n\t// Returns `true` for the `window` object in browser environments.\n\tif ( stringifiedObject == '[object Window]' ) {\n\t\treturn true;\n\t}\n\n\t// Returns `true` for the `window` object in the Electron environment.\n\tif ( stringifiedObject == '[object global]' ) {\n\t\treturn true;\n\t}\n\n\treturn false;\n}\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module utils/dom/emittermixin\n */\n\nimport { default as EmitterMixin, _getEmitterListenedTo, _setEmitterId } from '../emittermixin';\nimport uid from '../uid';\nimport isNode from './isnode';\nimport isWindow from './iswindow';\nimport { extend } from 'lodash-es';\n\n/**\n * Mixin that injects the DOM events API into its host. It provides the API\n * compatible with {@link module:utils/emittermixin~EmitterMixin}.\n *\n * DOM emitter mixin is by default available in the {@link module:ui/view~View} class,\n * but it can also be mixed into any other class:\n *\n *\t\timport mix from '../utils/mix.js';\n *\t\timport DomEmitterMixin from '../utils/dom/emittermixin.js';\n *\n *\t\tclass SomeView {}\n *\t\tmix( SomeView, DomEmitterMixin );\n *\n *\t\tconst view = new SomeView();\n *\t\tview.listenTo( domElement, ( evt, domEvt ) => {\n *\t\t\tconsole.log( evt, domEvt );\n *\t\t} );\n *\n * @mixin EmitterMixin\n * @mixes module:utils/emittermixin~EmitterMixin\n * @implements module:utils/dom/emittermixin~Emitter\n */\nconst DomEmitterMixin = extend( {}, EmitterMixin, {\n\t/**\n\t * Registers a callback function to be executed when an event is fired in a specific Emitter or DOM Node.\n\t * It is backwards compatible with {@link module:utils/emittermixin~EmitterMixin#listenTo}.\n\t *\n\t * @param {module:utils/emittermixin~Emitter|Node} emitter The object that fires the event.\n\t * @param {String} event The name of the event.\n\t * @param {Function} callback The function to be called on event.\n\t * @param {Object} [options={}] Additional options.\n\t * @param {module:utils/priorities~PriorityString|Number} [options.priority='normal'] The priority of this event callback. The higher\n\t * the priority value the sooner the callback will be fired. Events having the same priority are called in the\n\t * order they were added.\n\t * @param {Boolean} [options.useCapture=false] Indicates that events of this type will be dispatched to the registered\n\t * listener before being dispatched to any EventTarget beneath it in the DOM tree.\n\t */\n\tlistenTo( emitter, ...rest ) {\n\t\t// Check if emitter is an instance of DOM Node. If so, replace the argument with\n\t\t// corresponding ProxyEmitter (or create one if not existing).\n\t\tif ( isNode( emitter ) || isWindow( emitter ) ) {\n\t\t\tconst proxy = this._getProxyEmitter( emitter ) || new ProxyEmitter( emitter );\n\n\t\t\tproxy.attach( ...rest );\n\n\t\t\temitter = proxy;\n\t\t}\n\n\t\t// Execute parent class method with Emitter (or ProxyEmitter) instance.\n\t\tEmitterMixin.listenTo.call( this, emitter, ...rest );\n\t},\n\n\t/**\n\t * Stops listening for events. It can be used at different levels:\n\t * It is backwards compatible with {@link module:utils/emittermixin~EmitterMixin#listenTo}.\n\t *\n\t * * To stop listening to a specific callback.\n\t * * To stop listening to a specific event.\n\t * * To stop listening to all events fired by a specific object.\n\t * * To stop listening to all events fired by all object.\n\t *\n\t * @param {module:utils/emittermixin~Emitter|Node} [emitter] The object to stop listening to. If omitted, stops it for all objects.\n\t * @param {String} [event] (Requires the `emitter`) The name of the event to stop listening to. If omitted, stops it\n\t * for all events from `emitter`.\n\t * @param {Function} [callback] (Requires the `event`) The function to be removed from the call list for the given\n\t * `event`.\n\t */\n\tstopListening( emitter, event, callback ) {\n\t\t// Check if emitter is an instance of DOM Node. If so, replace the argument with corresponding ProxyEmitter.\n\t\tif ( isNode( emitter ) || isWindow( emitter ) ) {\n\t\t\tconst proxy = this._getProxyEmitter( emitter );\n\n\t\t\t// Element has no listeners.\n\t\t\tif ( !proxy ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\temitter = proxy;\n\t\t}\n\n\t\t// Execute parent class method with Emitter (or ProxyEmitter) instance.\n\t\tEmitterMixin.stopListening.call( this, emitter, event, callback );\n\n\t\tif ( emitter instanceof ProxyEmitter ) {\n\t\t\temitter.detach( event );\n\t\t}\n\t},\n\n\t/**\n\t * Retrieves ProxyEmitter instance for given DOM Node residing in this Host.\n\t *\n\t * @pivate\n\t * @param {Node} node DOM Node of the ProxyEmitter.\n\t * @returns {module:utils/dom/emittermixin~ProxyEmitter} ProxyEmitter instance or null.\n\t */\n\t_getProxyEmitter( node ) {\n\t\treturn _getEmitterListenedTo( this, getNodeUID( node ) );\n\t}\n} );\n\nexport default DomEmitterMixin;\n\n/**\n * Creates a ProxyEmitter instance. Such an instance is a bridge between a DOM Node firing events\n * and any Host listening to them. It is backwards compatible with {@link module:utils/emittermixin~EmitterMixin#on}.\n *\n * listenTo( click, ... )\n * +-----------------------------------------+\n * | stopListening( ... ) |\n * +----------------------------+ | addEventListener( click, ... )\n * | Host | | +---------------------------------------------+\n * +----------------------------+ | | removeEventListener( click, ... ) |\n * | _listeningTo: { | +----------v-------------+ |\n * | UID: { | | ProxyEmitter | |\n * | emitter: ProxyEmitter, | +------------------------+ +------------v----------+\n * | callbacks: { | | events: { | | Node (HTMLElement) |\n * | click: [ callbacks ] | | click: [ callbacks ] | +-----------------------+\n * | } | | }, | | data-ck-expando: UID |\n * | } | | _domNode: Node, | +-----------------------+\n * | } | | _domListeners: {}, | |\n * | +------------------------+ | | _emitterId: UID | |\n * | | DomEmitterMixin | | +--------------^---------+ |\n * | +------------------------+ | | | |\n * +--------------^-------------+ | +---------------------------------------------+\n * | | click (DOM Event)\n * +-----------------------------------------+\n * fire( click, DOM Event )\n *\n * @mixes module:utils/emittermixin~EmitterMixin\n * @implements module:utils/dom/emittermixin~Emitter\n * @private\n */\nclass ProxyEmitter {\n\t/**\n\t * @param {Node} node DOM Node that fires events.\n\t * @returns {Object} ProxyEmitter instance bound to the DOM Node.\n\t */\n\tconstructor( node ) {\n\t\t// Set emitter ID to match DOM Node \"expando\" property.\n\t\t_setEmitterId( this, getNodeUID( node ) );\n\n\t\t// Remember the DOM Node this ProxyEmitter is bound to.\n\t\tthis._domNode = node;\n\t}\n}\n\nextend( ProxyEmitter.prototype, EmitterMixin, {\n\t/**\n\t * Collection of native DOM listeners.\n\t *\n\t * @private\n\t * @member {Object} module:utils/dom/emittermixin~ProxyEmitter#_domListeners\n\t */\n\n\t/**\n\t * Registers a callback function to be executed when an event is fired.\n\t *\n\t * It attaches a native DOM listener to the DOM Node. When fired,\n\t * a corresponding Emitter event will also fire with DOM Event object as an argument.\n\t *\n\t * @method module:utils/dom/emittermixin~ProxyEmitter#attach\n\t * @param {String} event The name of the event.\n\t * @param {Function} callback The function to be called on event.\n\t * @param {Object} [options={}] Additional options.\n\t * @param {Boolean} [options.useCapture=false] Indicates that events of this type will be dispatched to the registered\n\t * listener before being dispatched to any EventTarget beneath it in the DOM tree.\n\t */\n\tattach( event, callback, options = {} ) {\n\t\t// If the DOM Listener for given event already exist it is pointless\n\t\t// to attach another one.\n\t\tif ( this._domListeners && this._domListeners[ event ] ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst domListener = this._createDomListener( event, !!options.useCapture );\n\n\t\t// Attach the native DOM listener to DOM Node.\n\t\tthis._domNode.addEventListener( event, domListener, !!options.useCapture );\n\n\t\tif ( !this._domListeners ) {\n\t\t\tthis._domListeners = {};\n\t\t}\n\n\t\t// Store the native DOM listener in this ProxyEmitter. It will be helpful\n\t\t// when stopping listening to the event.\n\t\tthis._domListeners[ event ] = domListener;\n\t},\n\n\t/**\n\t * Stops executing the callback on the given event.\n\t *\n\t * @method module:utils/dom/emittermixin~ProxyEmitter#detach\n\t * @param {String} event The name of the event.\n\t */\n\tdetach( event ) {\n\t\tlet events;\n\n\t\t// Remove native DOM listeners which are orphans. If no callbacks\n\t\t// are awaiting given event, detach native DOM listener from DOM Node.\n\t\t// See: {@link attach}.\n\n\t\tif ( this._domListeners[ event ] && ( !( events = this._events[ event ] ) || !events.callbacks.length ) ) {\n\t\t\tthis._domListeners[ event ].removeListener();\n\t\t}\n\t},\n\n\t/**\n\t * Creates a native DOM listener callback. When the native DOM event\n\t * is fired it will fire corresponding event on this ProxyEmitter.\n\t * Note: A native DOM Event is passed as an argument.\n\t *\n\t * @private\n\t * @method module:utils/dom/emittermixin~ProxyEmitter#_createDomListener\n\t * @param {String} event The name of the event.\n\t * @param {Boolean} useCapture Indicates whether the listener was created for capturing event.\n\t * @returns {Function} The DOM listener callback.\n\t */\n\t_createDomListener( event, useCapture ) {\n\t\tconst domListener = domEvt => {\n\t\t\tthis.fire( event, domEvt );\n\t\t};\n\n\t\t// Supply the DOM listener callback with a function that will help\n\t\t// detach it from the DOM Node, when it is no longer necessary.\n\t\t// See: {@link detach}.\n\t\tdomListener.removeListener = () => {\n\t\t\tthis._domNode.removeEventListener( event, domListener, useCapture );\n\t\t\tdelete this._domListeners[ event ];\n\t\t};\n\n\t\treturn domListener;\n\t}\n} );\n\n// Gets an unique DOM Node identifier. The identifier will be set if not defined.\n//\n// @private\n// @param {Node} node\n// @returns {String} UID for given DOM Node.\nfunction getNodeUID( node ) {\n\treturn node[ 'data-ck-expando' ] || ( node[ 'data-ck-expando' ] = uid() );\n}\n\n/**\n * Interface representing classes which mix in {@link module:utils/dom/emittermixin~EmitterMixin}.\n *\n * @interface Emitter\n */\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module engine/view/observer/observer\n */\n\nimport DomEmitterMixin from '@ckeditor/ckeditor5-utils/src/dom/emittermixin';\nimport mix from '@ckeditor/ckeditor5-utils/src/mix';\n\n/**\n * Abstract base observer class. Observers are classes which listen to DOM events, do the preliminary\n * processing and fire events on the {@link module:engine/view/document~Document} objects.\n * Observers can also add features to the view, for instance by updating its status or marking elements\n * which need refresh on DOM events.\n *\n * @abstract\n */\nexport default class Observer {\n\t/**\n\t * Creates an instance of the observer.\n\t *\n\t * @param {module:engine/view/view~View} view\n\t */\n\tconstructor( view ) {\n\t\t/**\n\t\t * Instance of the view controller.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/view~View}\n\t\t */\n\t\tthis.view = view;\n\n\t\t/**\n\t\t * Reference to the {@link module:engine/view/document~Document} object.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/document~Document}\n\t\t */\n\t\tthis.document = view.document;\n\n\t\t/**\n\t\t * State of the observer. If it is disabled events will not be fired.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Boolean}\n\t\t */\n\t\tthis.isEnabled = false;\n\t}\n\n\t/**\n\t * Enables the observer. This method is called when the observer is registered to the\n\t * {@link module:engine/view/view~View} and after {@link module:engine/view/view~View#forceRender rendering}\n\t * (all observers are {@link #disable disabled} before rendering).\n\t *\n\t * A typical use case for disabling observers is that mutation observers need to be disabled for the rendering.\n\t * However, a child class may not need to be disabled, so it can implement an empty method.\n\t *\n\t * @see module:engine/view/observer/observer~Observer#disable\n\t */\n\tenable() {\n\t\tthis.isEnabled = true;\n\t}\n\n\t/**\n\t * Disables the observer. This method is called before\n\t * {@link module:engine/view/view~View#forceRender rendering} to prevent firing events during rendering.\n\t *\n\t * @see module:engine/view/observer/observer~Observer#enable\n\t */\n\tdisable() {\n\t\tthis.isEnabled = false;\n\t}\n\n\t/**\n\t * Disables and destroys the observer, among others removes event listeners created by the observer.\n\t */\n\tdestroy() {\n\t\tthis.disable();\n\t\tthis.stopListening();\n\t}\n\n\t/**\n\t * Starts observing the given root element.\n\t *\n\t * @method #observe\n\t * @param {HTMLElement} domElement\n\t * @param {String} name The name of the root element.\n\t */\n}\n\nmix( Observer, DomEmitterMixin );\n","/** Used to stand-in for `undefined` hash values. */\nvar HASH_UNDEFINED = '__lodash_hash_undefined__';\n\n/**\n * Adds `value` to the array cache.\n *\n * @private\n * @name add\n * @memberOf SetCache\n * @alias push\n * @param {*} value The value to cache.\n * @returns {Object} Returns the cache instance.\n */\nfunction setCacheAdd(value) {\n this.__data__.set(value, HASH_UNDEFINED);\n return this;\n}\n\nexport default setCacheAdd;\n","/**\n * Checks if `value` is in the array cache.\n *\n * @private\n * @name has\n * @memberOf SetCache\n * @param {*} value The value to search for.\n * @returns {number} Returns `true` if `value` is found, else `false`.\n */\nfunction setCacheHas(value) {\n return this.__data__.has(value);\n}\n\nexport default setCacheHas;\n","import MapCache from './_MapCache.js';\nimport setCacheAdd from './_setCacheAdd.js';\nimport setCacheHas from './_setCacheHas.js';\n\n/**\n *\n * Creates an array cache object to store unique values.\n *\n * @private\n * @constructor\n * @param {Array} [values] The values to cache.\n */\nfunction SetCache(values) {\n var index = -1,\n length = values == null ? 0 : values.length;\n\n this.__data__ = new MapCache;\n while (++index < length) {\n this.add(values[index]);\n }\n}\n\n// Add methods to `SetCache`.\nSetCache.prototype.add = SetCache.prototype.push = setCacheAdd;\nSetCache.prototype.has = setCacheHas;\n\nexport default SetCache;\n","/**\n * A specialized version of `_.some` for arrays without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {boolean} Returns `true` if any element passes the predicate check,\n * else `false`.\n */\nfunction arraySome(array, predicate) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n while (++index < length) {\n if (predicate(array[index], index, array)) {\n return true;\n }\n }\n return false;\n}\n\nexport default arraySome;\n","/**\n * Checks if a `cache` value for `key` exists.\n *\n * @private\n * @param {Object} cache The cache to query.\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction cacheHas(cache, key) {\n return cache.has(key);\n}\n\nexport default cacheHas;\n","import SetCache from './_SetCache.js';\nimport arraySome from './_arraySome.js';\nimport cacheHas from './_cacheHas.js';\n\n/** Used to compose bitmasks for value comparisons. */\nvar COMPARE_PARTIAL_FLAG = 1,\n COMPARE_UNORDERED_FLAG = 2;\n\n/**\n * A specialized version of `baseIsEqualDeep` for arrays with support for\n * partial deep comparisons.\n *\n * @private\n * @param {Array} array The array to compare.\n * @param {Array} other The other array to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} stack Tracks traversed `array` and `other` objects.\n * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.\n */\nfunction equalArrays(array, other, bitmask, customizer, equalFunc, stack) {\n var isPartial = bitmask & COMPARE_PARTIAL_FLAG,\n arrLength = array.length,\n othLength = other.length;\n\n if (arrLength != othLength && !(isPartial && othLength > arrLength)) {\n return false;\n }\n // Assume cyclic values are equal.\n var stacked = stack.get(array);\n if (stacked && stack.get(other)) {\n return stacked == other;\n }\n var index = -1,\n result = true,\n seen = (bitmask & COMPARE_UNORDERED_FLAG) ? new SetCache : undefined;\n\n stack.set(array, other);\n stack.set(other, array);\n\n // Ignore non-index properties.\n while (++index < arrLength) {\n var arrValue = array[index],\n othValue = other[index];\n\n if (customizer) {\n var compared = isPartial\n ? customizer(othValue, arrValue, index, other, array, stack)\n : customizer(arrValue, othValue, index, array, other, stack);\n }\n if (compared !== undefined) {\n if (compared) {\n continue;\n }\n result = false;\n break;\n }\n // Recursively compare arrays (susceptible to call stack limits).\n if (seen) {\n if (!arraySome(other, function(othValue, othIndex) {\n if (!cacheHas(seen, othIndex) &&\n (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {\n return seen.push(othIndex);\n }\n })) {\n result = false;\n break;\n }\n } else if (!(\n arrValue === othValue ||\n equalFunc(arrValue, othValue, bitmask, customizer, stack)\n )) {\n result = false;\n break;\n }\n }\n stack['delete'](array);\n stack['delete'](other);\n return result;\n}\n\nexport default equalArrays;\n","/**\n * Converts `map` to its key-value pairs.\n *\n * @private\n * @param {Object} map The map to convert.\n * @returns {Array} Returns the key-value pairs.\n */\nfunction mapToArray(map) {\n var index = -1,\n result = Array(map.size);\n\n map.forEach(function(value, key) {\n result[++index] = [key, value];\n });\n return result;\n}\n\nexport default mapToArray;\n","/**\n * Converts `set` to an array of its values.\n *\n * @private\n * @param {Object} set The set to convert.\n * @returns {Array} Returns the values.\n */\nfunction setToArray(set) {\n var index = -1,\n result = Array(set.size);\n\n set.forEach(function(value) {\n result[++index] = value;\n });\n return result;\n}\n\nexport default setToArray;\n","import Symbol from './_Symbol.js';\nimport Uint8Array from './_Uint8Array.js';\nimport eq from './eq.js';\nimport equalArrays from './_equalArrays.js';\nimport mapToArray from './_mapToArray.js';\nimport setToArray from './_setToArray.js';\n\n/** Used to compose bitmasks for value comparisons. */\nvar COMPARE_PARTIAL_FLAG = 1,\n COMPARE_UNORDERED_FLAG = 2;\n\n/** `Object#toString` result references. */\nvar boolTag = '[object Boolean]',\n dateTag = '[object Date]',\n errorTag = '[object Error]',\n mapTag = '[object Map]',\n numberTag = '[object Number]',\n regexpTag = '[object RegExp]',\n setTag = '[object Set]',\n stringTag = '[object String]',\n symbolTag = '[object Symbol]';\n\nvar arrayBufferTag = '[object ArrayBuffer]',\n dataViewTag = '[object DataView]';\n\n/** Used to convert symbols to primitives and strings. */\nvar symbolProto = Symbol ? Symbol.prototype : undefined,\n symbolValueOf = symbolProto ? symbolProto.valueOf : undefined;\n\n/**\n * A specialized version of `baseIsEqualDeep` for comparing objects of\n * the same `toStringTag`.\n *\n * **Note:** This function only supports comparing values with tags of\n * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {string} tag The `toStringTag` of the objects to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} stack Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\nfunction equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {\n switch (tag) {\n case dataViewTag:\n if ((object.byteLength != other.byteLength) ||\n (object.byteOffset != other.byteOffset)) {\n return false;\n }\n object = object.buffer;\n other = other.buffer;\n\n case arrayBufferTag:\n if ((object.byteLength != other.byteLength) ||\n !equalFunc(new Uint8Array(object), new Uint8Array(other))) {\n return false;\n }\n return true;\n\n case boolTag:\n case dateTag:\n case numberTag:\n // Coerce booleans to `1` or `0` and dates to milliseconds.\n // Invalid dates are coerced to `NaN`.\n return eq(+object, +other);\n\n case errorTag:\n return object.name == other.name && object.message == other.message;\n\n case regexpTag:\n case stringTag:\n // Coerce regexes to strings and treat strings, primitives and objects,\n // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring\n // for more details.\n return object == (other + '');\n\n case mapTag:\n var convert = mapToArray;\n\n case setTag:\n var isPartial = bitmask & COMPARE_PARTIAL_FLAG;\n convert || (convert = setToArray);\n\n if (object.size != other.size && !isPartial) {\n return false;\n }\n // Assume cyclic values are equal.\n var stacked = stack.get(object);\n if (stacked) {\n return stacked == other;\n }\n bitmask |= COMPARE_UNORDERED_FLAG;\n\n // Recursively compare objects (susceptible to call stack limits).\n stack.set(object, other);\n var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack);\n stack['delete'](object);\n return result;\n\n case symbolTag:\n if (symbolValueOf) {\n return symbolValueOf.call(object) == symbolValueOf.call(other);\n }\n }\n return false;\n}\n\nexport default equalByTag;\n","import getAllKeys from './_getAllKeys.js';\n\n/** Used to compose bitmasks for value comparisons. */\nvar COMPARE_PARTIAL_FLAG = 1;\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * A specialized version of `baseIsEqualDeep` for objects with support for\n * partial deep comparisons.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} stack Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\nfunction equalObjects(object, other, bitmask, customizer, equalFunc, stack) {\n var isPartial = bitmask & COMPARE_PARTIAL_FLAG,\n objProps = getAllKeys(object),\n objLength = objProps.length,\n othProps = getAllKeys(other),\n othLength = othProps.length;\n\n if (objLength != othLength && !isPartial) {\n return false;\n }\n var index = objLength;\n while (index--) {\n var key = objProps[index];\n if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) {\n return false;\n }\n }\n // Assume cyclic values are equal.\n var stacked = stack.get(object);\n if (stacked && stack.get(other)) {\n return stacked == other;\n }\n var result = true;\n stack.set(object, other);\n stack.set(other, object);\n\n var skipCtor = isPartial;\n while (++index < objLength) {\n key = objProps[index];\n var objValue = object[key],\n othValue = other[key];\n\n if (customizer) {\n var compared = isPartial\n ? customizer(othValue, objValue, key, other, object, stack)\n : customizer(objValue, othValue, key, object, other, stack);\n }\n // Recursively compare objects (susceptible to call stack limits).\n if (!(compared === undefined\n ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack))\n : compared\n )) {\n result = false;\n break;\n }\n skipCtor || (skipCtor = key == 'constructor');\n }\n if (result && !skipCtor) {\n var objCtor = object.constructor,\n othCtor = other.constructor;\n\n // Non `Object` object instances with different constructors are not equal.\n if (objCtor != othCtor &&\n ('constructor' in object && 'constructor' in other) &&\n !(typeof objCtor == 'function' && objCtor instanceof objCtor &&\n typeof othCtor == 'function' && othCtor instanceof othCtor)) {\n result = false;\n }\n }\n stack['delete'](object);\n stack['delete'](other);\n return result;\n}\n\nexport default equalObjects;\n","import Stack from './_Stack.js';\nimport equalArrays from './_equalArrays.js';\nimport equalByTag from './_equalByTag.js';\nimport equalObjects from './_equalObjects.js';\nimport getTag from './_getTag.js';\nimport isArray from './isArray.js';\nimport isBuffer from './isBuffer.js';\nimport isTypedArray from './isTypedArray.js';\n\n/** Used to compose bitmasks for value comparisons. */\nvar COMPARE_PARTIAL_FLAG = 1;\n\n/** `Object#toString` result references. */\nvar argsTag = '[object Arguments]',\n arrayTag = '[object Array]',\n objectTag = '[object Object]';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * A specialized version of `baseIsEqual` for arrays and objects which performs\n * deep comparisons and tracks traversed objects enabling objects with circular\n * references to be compared.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} [stack] Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\nfunction baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {\n var objIsArr = isArray(object),\n othIsArr = isArray(other),\n objTag = objIsArr ? arrayTag : getTag(object),\n othTag = othIsArr ? arrayTag : getTag(other);\n\n objTag = objTag == argsTag ? objectTag : objTag;\n othTag = othTag == argsTag ? objectTag : othTag;\n\n var objIsObj = objTag == objectTag,\n othIsObj = othTag == objectTag,\n isSameTag = objTag == othTag;\n\n if (isSameTag && isBuffer(object)) {\n if (!isBuffer(other)) {\n return false;\n }\n objIsArr = true;\n objIsObj = false;\n }\n if (isSameTag && !objIsObj) {\n stack || (stack = new Stack);\n return (objIsArr || isTypedArray(object))\n ? equalArrays(object, other, bitmask, customizer, equalFunc, stack)\n : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);\n }\n if (!(bitmask & COMPARE_PARTIAL_FLAG)) {\n var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),\n othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');\n\n if (objIsWrapped || othIsWrapped) {\n var objUnwrapped = objIsWrapped ? object.value() : object,\n othUnwrapped = othIsWrapped ? other.value() : other;\n\n stack || (stack = new Stack);\n return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);\n }\n }\n if (!isSameTag) {\n return false;\n }\n stack || (stack = new Stack);\n return equalObjects(object, other, bitmask, customizer, equalFunc, stack);\n}\n\nexport default baseIsEqualDeep;\n","import baseIsEqualDeep from './_baseIsEqualDeep.js';\nimport isObjectLike from './isObjectLike.js';\n\n/**\n * The base implementation of `_.isEqual` which supports partial comparisons\n * and tracks traversed objects.\n *\n * @private\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @param {boolean} bitmask The bitmask flags.\n * 1 - Unordered comparison\n * 2 - Partial comparison\n * @param {Function} [customizer] The function to customize comparisons.\n * @param {Object} [stack] Tracks traversed `value` and `other` objects.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n */\nfunction baseIsEqual(value, other, bitmask, customizer, stack) {\n if (value === other) {\n return true;\n }\n if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) {\n return value !== value && other !== other;\n }\n return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);\n}\n\nexport default baseIsEqual;\n","import baseIsEqual from './_baseIsEqual.js';\n\n/**\n * This method is like `_.isEqual` except that it accepts `customizer` which\n * is invoked to compare values. If `customizer` returns `undefined`, comparisons\n * are handled by the method instead. The `customizer` is invoked with up to\n * six arguments: (objValue, othValue [, index|key, object, other, stack]).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @param {Function} [customizer] The function to customize comparisons.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n * @example\n *\n * function isGreeting(value) {\n * return /^h(?:i|ello)$/.test(value);\n * }\n *\n * function customizer(objValue, othValue) {\n * if (isGreeting(objValue) && isGreeting(othValue)) {\n * return true;\n * }\n * }\n *\n * var array = ['hello', 'goodbye'];\n * var other = ['hi', 'goodbye'];\n *\n * _.isEqualWith(array, other, customizer);\n * // => true\n */\nfunction isEqualWith(value, other, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n var result = customizer ? customizer(value, other) : undefined;\n return result === undefined ? baseIsEqual(value, other, undefined, customizer) : !!result;\n}\n\nexport default isEqualWith;\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module engine/view/observer/mutationobserver\n */\n\n/* globals window */\n\nimport Observer from './observer';\nimport ViewSelection from '../selection';\nimport { startsWithFiller, getDataWithoutFiller } from '../filler';\nimport { isEqualWith } from 'lodash-es';\n\n/**\n * Mutation observer class observes changes in the DOM, fires {@link module:engine/view/document~Document#event:mutations} event, mark view\n * elements as changed and call {@link module:engine/view/renderer~Renderer#render}.\n * Because all mutated nodes are marked as \"to be rendered\" and the\n * {@link module:engine/view/renderer~Renderer#render} is called, all changes will be reverted, unless the mutation will be handled by the\n * {@link module:engine/view/document~Document#event:mutations} event listener. It means user will see only handled changes, and the editor\n * will block all changes which are not handled.\n *\n * Mutation Observer also take care of reducing number of mutations which are fired. It removes duplicates and\n * mutations on elements which do not have corresponding view elements. Also\n * {@link module:engine/view/observer/mutationobserver~MutatedText text mutation} is fired only if parent element do not change child list.\n *\n * Note that this observer is attached by the {@link module:engine/view/view~View} and is available by default.\n *\n * @extends module:engine/view/observer/observer~Observer\n */\nexport default class MutationObserver extends Observer {\n\tconstructor( view ) {\n\t\tsuper( view );\n\n\t\t/**\n\t\t * Native mutation observer config.\n\t\t *\n\t\t * @private\n\t\t * @member {Object}\n\t\t */\n\t\tthis._config = {\n\t\t\tchildList: true,\n\t\t\tcharacterData: true,\n\t\t\tcharacterDataOldValue: true,\n\t\t\tsubtree: true\n\t\t};\n\n\t\t/**\n\t\t * Reference to the {@link module:engine/view/view~View#domConverter}.\n\t\t *\n\t\t * @member {module:engine/view/domconverter~DomConverter}\n\t\t */\n\t\tthis.domConverter = view.domConverter;\n\n\t\t/**\n\t\t * Reference to the {@link module:engine/view/view~View#_renderer}.\n\t\t *\n\t\t * @member {module:engine/view/renderer~Renderer}\n\t\t */\n\t\tthis.renderer = view._renderer;\n\n\t\t/**\n\t\t * Observed DOM elements.\n\t\t *\n\t\t * @private\n\t\t * @member {Array.}\n\t\t */\n\t\tthis._domElements = [];\n\n\t\t/**\n\t\t * Native mutation observer.\n\t\t *\n\t\t * @private\n\t\t * @member {MutationObserver}\n\t\t */\n\t\tthis._mutationObserver = new window.MutationObserver( this._onMutations.bind( this ) );\n\t}\n\n\t/**\n\t * Synchronously fires {@link module:engine/view/document~Document#event:mutations} event with all mutations in record queue.\n\t * At the same time empties the queue so mutations will not be fired twice.\n\t */\n\tflush() {\n\t\tthis._onMutations( this._mutationObserver.takeRecords() );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tobserve( domElement ) {\n\t\tthis._domElements.push( domElement );\n\n\t\tif ( this.isEnabled ) {\n\t\t\tthis._mutationObserver.observe( domElement, this._config );\n\t\t}\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tenable() {\n\t\tsuper.enable();\n\n\t\tfor ( const domElement of this._domElements ) {\n\t\t\tthis._mutationObserver.observe( domElement, this._config );\n\t\t}\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tdisable() {\n\t\tsuper.disable();\n\n\t\tthis._mutationObserver.disconnect();\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tdestroy() {\n\t\tsuper.destroy();\n\n\t\tthis._mutationObserver.disconnect();\n\t}\n\n\t/**\n\t * Handles mutations. Deduplicates, mark view elements to sync, fire event and call render.\n\t *\n\t * @private\n\t * @param {Array.} domMutations Array of native mutations.\n\t */\n\t_onMutations( domMutations ) {\n\t\t// As a result of this.flush() we can have an empty collection.\n\t\tif ( domMutations.length === 0 ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst domConverter = this.domConverter;\n\n\t\t// Use map and set for deduplication.\n\t\tconst mutatedTexts = new Map();\n\t\tconst mutatedElements = new Set();\n\n\t\t// Handle `childList` mutations first, so we will be able to check if the `characterData` mutation is in the\n\t\t// element with changed structure anyway.\n\t\tfor ( const mutation of domMutations ) {\n\t\t\tif ( mutation.type === 'childList' ) {\n\t\t\t\tconst element = domConverter.mapDomToView( mutation.target );\n\n\t\t\t\t// Do not collect mutations from UIElements.\n\t\t\t\tif ( element && element.is( 'uiElement' ) ) {\n\t\t\t\t\tcontinue;\n\t\t\t\t}\n\n\t\t\t\tif ( element && !this._isBogusBrMutation( mutation ) ) {\n\t\t\t\t\tmutatedElements.add( element );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t// Handle `characterData` mutations later, when we have the full list of nodes which changed structure.\n\t\tfor ( const mutation of domMutations ) {\n\t\t\tconst element = domConverter.mapDomToView( mutation.target );\n\n\t\t\t// Do not collect mutations from UIElements.\n\t\t\tif ( element && element.is( 'uiElement' ) ) {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\tif ( mutation.type === 'characterData' ) {\n\t\t\t\tconst text = domConverter.findCorrespondingViewText( mutation.target );\n\n\t\t\t\tif ( text && !mutatedElements.has( text.parent ) ) {\n\t\t\t\t\t// Use text as a key, for deduplication. If there will be another mutation on the same text element\n\t\t\t\t\t// we will have only one in the map.\n\t\t\t\t\tmutatedTexts.set( text, {\n\t\t\t\t\t\ttype: 'text',\n\t\t\t\t\t\toldText: text.data,\n\t\t\t\t\t\tnewText: getDataWithoutFiller( mutation.target ),\n\t\t\t\t\t\tnode: text\n\t\t\t\t\t} );\n\t\t\t\t}\n\t\t\t\t// When we added first letter to the text node which had only inline filler, for the DOM it is mutation\n\t\t\t\t// on text, but for the view, where filler text node did not existed, new text node was created, so we\n\t\t\t\t// need to fire 'children' mutation instead of 'text'.\n\t\t\t\telse if ( !text && startsWithFiller( mutation.target ) ) {\n\t\t\t\t\tmutatedElements.add( domConverter.mapDomToView( mutation.target.parentNode ) );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t// Now we build the list of mutations to fire and mark elements. We did not do it earlier to avoid marking the\n\t\t// same node multiple times in case of duplication.\n\n\t\t// List of mutations we will fire.\n\t\tconst viewMutations = [];\n\n\t\tfor ( const mutatedText of mutatedTexts.values() ) {\n\t\t\tthis.renderer.markToSync( 'text', mutatedText.node );\n\t\t\tviewMutations.push( mutatedText );\n\t\t}\n\n\t\tfor ( const viewElement of mutatedElements ) {\n\t\t\tconst domElement = domConverter.mapViewToDom( viewElement );\n\t\t\tconst viewChildren = Array.from( viewElement.getChildren() );\n\t\t\tconst newViewChildren = Array.from( domConverter.domChildrenToView( domElement, { withChildren: false } ) );\n\n\t\t\t// It may happen that as a result of many changes (sth was inserted and then removed),\n\t\t\t// both elements haven't really changed. #1031\n\t\t\tif ( !isEqualWith( viewChildren, newViewChildren, sameNodes ) ) {\n\t\t\t\tthis.renderer.markToSync( 'children', viewElement );\n\n\t\t\t\tviewMutations.push( {\n\t\t\t\t\ttype: 'children',\n\t\t\t\t\toldChildren: viewChildren,\n\t\t\t\t\tnewChildren: newViewChildren,\n\t\t\t\t\tnode: viewElement\n\t\t\t\t} );\n\t\t\t}\n\t\t}\n\n\t\t// Retrieve `domSelection` using `ownerDocument` of one of mutated nodes.\n\t\t// There should not be simultaneous mutation in multiple documents, so it's fine.\n\t\tconst domSelection = domMutations[ 0 ].target.ownerDocument.getSelection();\n\n\t\tlet viewSelection = null;\n\n\t\tif ( domSelection && domSelection.anchorNode ) {\n\t\t\t// If `domSelection` is inside a dom node that is already bound to a view node from view tree, get\n\t\t\t// corresponding selection in the view and pass it together with `viewMutations`. The `viewSelection` may\n\t\t\t// be used by features handling mutations.\n\t\t\t// Only one range is supported.\n\n\t\t\tconst viewSelectionAnchor = domConverter.domPositionToView( domSelection.anchorNode, domSelection.anchorOffset );\n\t\t\tconst viewSelectionFocus = domConverter.domPositionToView( domSelection.focusNode, domSelection.focusOffset );\n\n\t\t\t// Anchor and focus has to be properly mapped to view.\n\t\t\tif ( viewSelectionAnchor && viewSelectionFocus ) {\n\t\t\t\tviewSelection = new ViewSelection( viewSelectionAnchor );\n\t\t\t\tviewSelection.setFocus( viewSelectionFocus );\n\t\t\t}\n\t\t}\n\n\t\tthis.document.fire( 'mutations', viewMutations, viewSelection );\n\n\t\t// If nothing changes on `mutations` event, at this point we have \"dirty DOM\" (changed) and de-synched\n\t\t// view (which has not been changed). In order to \"reset DOM\" we render the view again.\n\t\tthis.view.forceRender();\n\n\t\tfunction sameNodes( child1, child2 ) {\n\t\t\t// First level of comparison (array of children vs array of children) – use the Lodash's default behavior.\n\t\t\tif ( Array.isArray( child1 ) ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// Elements.\n\t\t\tif ( child1 === child2 ) {\n\t\t\t\treturn true;\n\t\t\t}\n\t\t\t// Texts.\n\t\t\telse if ( child1.is( 'text' ) && child2.is( 'text' ) ) {\n\t\t\t\treturn child1.data === child2.data;\n\t\t\t}\n\n\t\t\t// Not matching types.\n\t\t\treturn false;\n\t\t}\n\t}\n\n\t/**\n\t * Checks if mutation was generated by the browser inserting bogus br on the end of the block element.\n\t * Such mutations are generated while pressing space or performing native spellchecker correction\n\t * on the end of the block element in Firefox browser.\n\t *\n\t * @private\n\t * @param {Object} mutation Native mutation object.\n\t * @returns {Boolean}\n\t */\n\t_isBogusBrMutation( mutation ) {\n\t\tlet addedNode = null;\n\n\t\t// Check if mutation added only one node on the end of its parent.\n\t\tif ( mutation.nextSibling === null && mutation.removedNodes.length === 0 && mutation.addedNodes.length == 1 ) {\n\t\t\taddedNode = this.domConverter.domToView( mutation.addedNodes[ 0 ], {\n\t\t\t\twithChildren: false\n\t\t\t} );\n\t\t}\n\n\t\treturn addedNode && addedNode.is( 'element', 'br' );\n\t}\n}\n\n/**\n * Fired when mutation occurred. If tree view is not changed on this event, DOM will be reverted to the state before\n * mutation, so all changes which should be applied, should be handled on this event.\n *\n * Introduced by {@link module:engine/view/observer/mutationobserver~MutationObserver}.\n *\n * Note that because {@link module:engine/view/observer/mutationobserver~MutationObserver} is attached by the\n * {@link module:engine/view/view~View} this event is available by default.\n *\n * @see module:engine/view/observer/mutationobserver~MutationObserver\n * @event module:engine/view/document~Document#event:mutations\n * @param {Array.}\n * viewMutations Array of mutations.\n * For mutated texts it will be {@link module:engine/view/observer/mutationobserver~MutatedText} and for mutated elements it will be\n * {@link module:engine/view/observer/mutationobserver~MutatedChildren}. You can recognize the type based on the `type` property.\n * @param {module:engine/view/selection~Selection|null} viewSelection View selection that is a result of converting DOM selection to view.\n * Keep in\n * mind that the DOM selection is already \"updated\", meaning that it already acknowledges changes done in mutation.\n */\n\n/**\n * Mutation item for text.\n *\n * @see module:engine/view/document~Document#event:mutations\n * @see module:engine/view/observer/mutationobserver~MutatedChildren\n *\n * @typedef {Object} module:engine/view/observer/mutationobserver~MutatedText\n *\n * @property {String} type For text mutations it is always 'text'.\n * @property {module:engine/view/text~Text} node Mutated text node.\n * @property {String} oldText Old text.\n * @property {String} newText New text.\n */\n\n/**\n * Mutation item for child nodes.\n *\n * @see module:engine/view/document~Document#event:mutations\n * @see module:engine/view/observer/mutationobserver~MutatedText\n *\n * @typedef {Object} module:engine/view/observer/mutationobserver~MutatedChildren\n *\n * @property {String} type For child nodes mutations it is always 'children'.\n * @property {module:engine/view/element~Element} node Parent of the mutated children.\n * @property {Array.} oldChildren Old child nodes.\n * @property {Array.} newChildren New child nodes.\n */\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module engine/view/observer/domeventdata\n */\n\nimport { extend } from 'lodash-es';\n\n/**\n * Information about a DOM event in context of the {@link module:engine/view/document~Document}.\n * It wraps the native event, which usually should not be used as the wrapper contains\n * additional data (like key code for keyboard events).\n */\nexport default class DomEventData {\n\t/**\n\t * @param {module:engine/view/view~View} view The instance of the view controller.\n\t * @param {Event} domEvent The DOM event.\n\t * @param {Object} [additionalData] Additional properties that the instance should contain.\n\t */\n\tconstructor( view, domEvent, additionalData ) {\n\t\t/**\n\t\t * Instance of the view controller.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/view~View} module:engine/view/observer/observer~Observer.DomEvent#view\n\t\t */\n\t\tthis.view = view;\n\n\t\t/**\n\t\t * The instance of the document.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/document~Document} module:engine/view/observer/observer~Observer.DomEvent#document\n\t\t */\n\t\tthis.document = view.document;\n\n\t\t/**\n\t\t * The DOM event.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Event} module:engine/view/observer/observer~Observer.DomEvent#domEvent\n\t\t */\n\t\tthis.domEvent = domEvent;\n\n\t\t/**\n\t\t * The DOM target.\n\t\t *\n\t\t * @readonly\n\t\t * @member {HTMLElement} module:engine/view/observer/observer~Observer.DomEvent#target\n\t\t */\n\t\tthis.domTarget = domEvent.target;\n\n\t\textend( this, additionalData );\n\t}\n\n\t/**\n\t * The tree view element representing the target.\n\t *\n\t * @readonly\n\t * @type module:engine/view/element~Element\n\t */\n\tget target() {\n\t\treturn this.view.domConverter.mapDomToView( this.domTarget );\n\t}\n\n\t/**\n\t * Prevents the native's event default action.\n\t */\n\tpreventDefault() {\n\t\tthis.domEvent.preventDefault();\n\t}\n\n\t/**\n\t * Stops native event propagation.\n\t */\n\tstopPropagation() {\n\t\tthis.domEvent.stopPropagation();\n\t}\n}\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module engine/view/observer/domeventobserver\n */\n\nimport Observer from './observer';\nimport DomEventData from './domeventdata';\n\n/**\n * Base class for DOM event observers. This class handles\n * {@link module:engine/view/observer/observer~Observer#observe adding} listeners to DOM elements,\n * {@link module:engine/view/observer/observer~Observer#disable disabling} and\n * {@link module:engine/view/observer/observer~Observer#enable re-enabling} events.\n * Child class needs to define\n * {@link module:engine/view/observer/domeventobserver~DomEventObserver#domEventType DOM event type} and\n * {@link module:engine/view/observer/domeventobserver~DomEventObserver#onDomEvent callback}.\n *\n * For instance:\n *\n *\t\tclass ClickObserver extends DomEventObserver {\n *\t\t\t// It can also be defined as a normal property in the constructor.\n *\t\t\tget domEventType() {\n *\t\t\t\treturn 'click';\n *\t\t\t}\n *\n *\t\t\tonDomEvent( domEvent ) {\n *\t\t\t\tthis.fire( 'click', domEvent );\n *\t\t\t}\n *\t\t}\n *\n * @extends module:engine/view/observer/observer~Observer\n */\nexport default class DomEventObserver extends Observer {\n\t/**\n\t * Type of the DOM event the observer should listen on. Array of types can be defined\n\t * if the obsever should listen to multiple DOM events.\n\t *\n\t * @readonly\n\t * @member {String|Array.} #domEventType\n\t */\n\n\t/**\n\t * Callback which should be called when the DOM event occurred. Note that the callback will not be called if\n\t * observer {@link #isEnabled is not enabled}.\n\t *\n\t * @see #domEventType\n\t * @abstract\n\t * @method #onDomEvent\n\t */\n\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( view ) {\n\t\tsuper( view );\n\n\t\t/**\n\t\t * If set to `true` DOM events will be listened on the capturing phase.\n\t\t * Default value is `false`.\n\t\t *\n\t\t * @member {Boolean}\n\t\t */\n\t\tthis.useCapture = false;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tobserve( domElement ) {\n\t\tconst types = typeof this.domEventType == 'string' ? [ this.domEventType ] : this.domEventType;\n\n\t\ttypes.forEach( type => {\n\t\t\tthis.listenTo( domElement, type, ( eventInfo, domEvent ) => {\n\t\t\t\tif ( this.isEnabled ) {\n\t\t\t\t\tthis.onDomEvent( domEvent );\n\t\t\t\t}\n\t\t\t}, { useCapture: this.useCapture } );\n\t\t} );\n\t}\n\n\t/**\n\t * Calls `Document#fire()` if observer {@link #isEnabled is enabled}.\n\t *\n\t * @see module:utils/emittermixin~EmitterMixin#fire\n\t * @param {String} eventType The event type (name).\n\t * @param {Event} domEvent The DOM event.\n\t * @param {Object} [additionalData] The additional data which should extend the\n\t * {@link module:engine/view/observer/domeventdata~DomEventData event data} object.\n\t */\n\tfire( eventType, domEvent, additionalData ) {\n\t\tif ( this.isEnabled ) {\n\t\t\tthis.document.fire( eventType, new DomEventData( this.view, domEvent, additionalData ) );\n\t\t}\n\t}\n}\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module engine/view/observer/keyobserver\n */\n\nimport DomEventObserver from './domeventobserver';\nimport { getCode } from '@ckeditor/ckeditor5-utils/src/keyboard';\n\n/**\n * Observer for events connected with pressing keyboard keys.\n *\n * Note that this observer is attached by the {@link module:engine/view/view~View} and is available by default.\n *\n * @extends module:engine/view/observer/domeventobserver~DomEventObserver\n */\nexport default class KeyObserver extends DomEventObserver {\n\tconstructor( view ) {\n\t\tsuper( view );\n\n\t\tthis.domEventType = [ 'keydown', 'keyup' ];\n\t}\n\n\tonDomEvent( domEvt ) {\n\t\tthis.fire( domEvt.type, domEvt, {\n\t\t\tkeyCode: domEvt.keyCode,\n\n\t\t\taltKey: domEvt.altKey,\n\t\t\tctrlKey: domEvt.ctrlKey || domEvt.metaKey,\n\t\t\tshiftKey: domEvt.shiftKey,\n\n\t\t\tget keystroke() {\n\t\t\t\treturn getCode( this );\n\t\t\t}\n\t\t} );\n\t}\n}\n\n/**\n * Fired when a key has been pressed.\n *\n * Introduced by {@link module:engine/view/observer/keyobserver~KeyObserver}.\n *\n * Note that because {@link module:engine/view/observer/keyobserver~KeyObserver} is attached by the\n * {@link module:engine/view/view~View} this event is available by default.\n *\n * @see module:engine/view/observer/keyobserver~KeyObserver\n * @event module:engine/view/document~Document#event:keydown\n * @param {module:engine/view/observer/keyobserver~KeyEventData} keyEventData\n */\n\n/**\n * Fired when a key has been released.\n *\n * Introduced by {@link module:engine/view/observer/keyobserver~KeyObserver}.\n *\n * Note that because {@link module:engine/view/observer/keyobserver~KeyObserver} is attached by the\n * {@link module:engine/view/view~View} this event is available by default.\n *\n * @see module:engine/view/observer/keyobserver~KeyObserver\n * @event module:engine/view/document~Document#event:keyup\n * @param {module:engine/view/observer/keyobserver~KeyEventData} keyEventData\n */\n\n/**\n * The value of both events - {@link module:engine/view/document~Document#event:keydown} and\n * {@link module:engine/view/document~Document#event:keyup}.\n *\n * @class module:engine/view/observer/keyobserver~KeyEventData\n * @extends module:engine/view/observer/domeventdata~DomEventData\n * @implements module:utils/keyboard~KeystrokeInfo\n */\n\n/**\n * Code of the whole keystroke. See {@link module:utils/keyboard~getCode}.\n *\n * @readonly\n * @member {Number} module:engine/view/observer/keyobserver~KeyEventData#keystroke\n */\n","import root from './_root.js';\n\n/**\n * Gets the timestamp of the number of milliseconds that have elapsed since\n * the Unix epoch (1 January 1970 00:00:00 UTC).\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Date\n * @returns {number} Returns the timestamp.\n * @example\n *\n * _.defer(function(stamp) {\n * console.log(_.now() - stamp);\n * }, _.now());\n * // => Logs the number of milliseconds it took for the deferred invocation.\n */\nvar now = function() {\n return root.Date.now();\n};\n\nexport default now;\n","import baseGetTag from './_baseGetTag.js';\nimport isObjectLike from './isObjectLike.js';\n\n/** `Object#toString` result references. */\nvar symbolTag = '[object Symbol]';\n\n/**\n * Checks if `value` is classified as a `Symbol` primitive or object.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.\n * @example\n *\n * _.isSymbol(Symbol.iterator);\n * // => true\n *\n * _.isSymbol('abc');\n * // => false\n */\nfunction isSymbol(value) {\n return typeof value == 'symbol' ||\n (isObjectLike(value) && baseGetTag(value) == symbolTag);\n}\n\nexport default isSymbol;\n","import isObject from './isObject.js';\nimport isSymbol from './isSymbol.js';\n\n/** Used as references for various `Number` constants. */\nvar NAN = 0 / 0;\n\n/** Used to match leading and trailing whitespace. */\nvar reTrim = /^\\s+|\\s+$/g;\n\n/** Used to detect bad signed hexadecimal string values. */\nvar reIsBadHex = /^[-+]0x[0-9a-f]+$/i;\n\n/** Used to detect binary string values. */\nvar reIsBinary = /^0b[01]+$/i;\n\n/** Used to detect octal string values. */\nvar reIsOctal = /^0o[0-7]+$/i;\n\n/** Built-in method references without a dependency on `root`. */\nvar freeParseInt = parseInt;\n\n/**\n * Converts `value` to a number.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to process.\n * @returns {number} Returns the number.\n * @example\n *\n * _.toNumber(3.2);\n * // => 3.2\n *\n * _.toNumber(Number.MIN_VALUE);\n * // => 5e-324\n *\n * _.toNumber(Infinity);\n * // => Infinity\n *\n * _.toNumber('3.2');\n * // => 3.2\n */\nfunction toNumber(value) {\n if (typeof value == 'number') {\n return value;\n }\n if (isSymbol(value)) {\n return NAN;\n }\n if (isObject(value)) {\n var other = typeof value.valueOf == 'function' ? value.valueOf() : value;\n value = isObject(other) ? (other + '') : other;\n }\n if (typeof value != 'string') {\n return value === 0 ? value : +value;\n }\n value = value.replace(reTrim, '');\n var isBinary = reIsBinary.test(value);\n return (isBinary || reIsOctal.test(value))\n ? freeParseInt(value.slice(2), isBinary ? 2 : 8)\n : (reIsBadHex.test(value) ? NAN : +value);\n}\n\nexport default toNumber;\n","import isObject from './isObject.js';\nimport now from './now.js';\nimport toNumber from './toNumber.js';\n\n/** Error message constants. */\nvar FUNC_ERROR_TEXT = 'Expected a function';\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeMax = Math.max,\n nativeMin = Math.min;\n\n/**\n * Creates a debounced function that delays invoking `func` until after `wait`\n * milliseconds have elapsed since the last time the debounced function was\n * invoked. The debounced function comes with a `cancel` method to cancel\n * delayed `func` invocations and a `flush` method to immediately invoke them.\n * Provide `options` to indicate whether `func` should be invoked on the\n * leading and/or trailing edge of the `wait` timeout. The `func` is invoked\n * with the last arguments provided to the debounced function. Subsequent\n * calls to the debounced function return the result of the last `func`\n * invocation.\n *\n * **Note:** If `leading` and `trailing` options are `true`, `func` is\n * invoked on the trailing edge of the timeout only if the debounced function\n * is invoked more than once during the `wait` timeout.\n *\n * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred\n * until to the next tick, similar to `setTimeout` with a timeout of `0`.\n *\n * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n * for details over the differences between `_.debounce` and `_.throttle`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to debounce.\n * @param {number} [wait=0] The number of milliseconds to delay.\n * @param {Object} [options={}] The options object.\n * @param {boolean} [options.leading=false]\n * Specify invoking on the leading edge of the timeout.\n * @param {number} [options.maxWait]\n * The maximum time `func` is allowed to be delayed before it's invoked.\n * @param {boolean} [options.trailing=true]\n * Specify invoking on the trailing edge of the timeout.\n * @returns {Function} Returns the new debounced function.\n * @example\n *\n * // Avoid costly calculations while the window size is in flux.\n * jQuery(window).on('resize', _.debounce(calculateLayout, 150));\n *\n * // Invoke `sendMail` when clicked, debouncing subsequent calls.\n * jQuery(element).on('click', _.debounce(sendMail, 300, {\n * 'leading': true,\n * 'trailing': false\n * }));\n *\n * // Ensure `batchLog` is invoked once after 1 second of debounced calls.\n * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });\n * var source = new EventSource('/stream');\n * jQuery(source).on('message', debounced);\n *\n * // Cancel the trailing debounced invocation.\n * jQuery(window).on('popstate', debounced.cancel);\n */\nfunction debounce(func, wait, options) {\n var lastArgs,\n lastThis,\n maxWait,\n result,\n timerId,\n lastCallTime,\n lastInvokeTime = 0,\n leading = false,\n maxing = false,\n trailing = true;\n\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n wait = toNumber(wait) || 0;\n if (isObject(options)) {\n leading = !!options.leading;\n maxing = 'maxWait' in options;\n maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;\n trailing = 'trailing' in options ? !!options.trailing : trailing;\n }\n\n function invokeFunc(time) {\n var args = lastArgs,\n thisArg = lastThis;\n\n lastArgs = lastThis = undefined;\n lastInvokeTime = time;\n result = func.apply(thisArg, args);\n return result;\n }\n\n function leadingEdge(time) {\n // Reset any `maxWait` timer.\n lastInvokeTime = time;\n // Start the timer for the trailing edge.\n timerId = setTimeout(timerExpired, wait);\n // Invoke the leading edge.\n return leading ? invokeFunc(time) : result;\n }\n\n function remainingWait(time) {\n var timeSinceLastCall = time - lastCallTime,\n timeSinceLastInvoke = time - lastInvokeTime,\n timeWaiting = wait - timeSinceLastCall;\n\n return maxing\n ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke)\n : timeWaiting;\n }\n\n function shouldInvoke(time) {\n var timeSinceLastCall = time - lastCallTime,\n timeSinceLastInvoke = time - lastInvokeTime;\n\n // Either this is the first call, activity has stopped and we're at the\n // trailing edge, the system time has gone backwards and we're treating\n // it as the trailing edge, or we've hit the `maxWait` limit.\n return (lastCallTime === undefined || (timeSinceLastCall >= wait) ||\n (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait));\n }\n\n function timerExpired() {\n var time = now();\n if (shouldInvoke(time)) {\n return trailingEdge(time);\n }\n // Restart the timer.\n timerId = setTimeout(timerExpired, remainingWait(time));\n }\n\n function trailingEdge(time) {\n timerId = undefined;\n\n // Only invoke if we have `lastArgs` which means `func` has been\n // debounced at least once.\n if (trailing && lastArgs) {\n return invokeFunc(time);\n }\n lastArgs = lastThis = undefined;\n return result;\n }\n\n function cancel() {\n if (timerId !== undefined) {\n clearTimeout(timerId);\n }\n lastInvokeTime = 0;\n lastArgs = lastCallTime = lastThis = timerId = undefined;\n }\n\n function flush() {\n return timerId === undefined ? result : trailingEdge(now());\n }\n\n function debounced() {\n var time = now(),\n isInvoking = shouldInvoke(time);\n\n lastArgs = arguments;\n lastThis = this;\n lastCallTime = time;\n\n if (isInvoking) {\n if (timerId === undefined) {\n return leadingEdge(lastCallTime);\n }\n if (maxing) {\n // Handle invocations in a tight loop.\n clearTimeout(timerId);\n timerId = setTimeout(timerExpired, wait);\n return invokeFunc(lastCallTime);\n }\n }\n if (timerId === undefined) {\n timerId = setTimeout(timerExpired, wait);\n }\n return result;\n }\n debounced.cancel = cancel;\n debounced.flush = flush;\n return debounced;\n}\n\nexport default debounce;\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module engine/view/observer/fakeselectionobserver\n */\n\nimport Observer from './observer';\nimport ViewSelection from '../selection';\nimport { keyCodes } from '@ckeditor/ckeditor5-utils/src/keyboard';\nimport { debounce } from 'lodash-es';\n\n/**\n * Fake selection observer class. If view selection is fake it is placed in dummy DOM container. This observer listens\n * on {@link module:engine/view/document~Document#event:keydown keydown} events and handles moving fake view selection to the correct place\n * if arrow keys are pressed.\n * Fires {@link module:engine/view/document~Document#event:selectionChange selectionChange event} simulating natural behaviour of\n * {@link module:engine/view/observer/selectionobserver~SelectionObserver SelectionObserver}.\n *\n * @extends module:engine/view/observer/observer~Observer\n */\nexport default class FakeSelectionObserver extends Observer {\n\t/**\n\t * Creates new FakeSelectionObserver instance.\n\t *\n\t * @param {module:engine/view/view~View} view\n\t */\n\tconstructor( view ) {\n\t\tsuper( view );\n\n\t\t/**\n\t\t * Fires debounced event `selectionChangeDone`. It uses `lodash#debounce` method to delay function call.\n\t\t *\n\t\t * @private\n\t\t * @param {Object} data Selection change data.\n\t\t * @method #_fireSelectionChangeDoneDebounced\n\t\t */\n\t\tthis._fireSelectionChangeDoneDebounced = debounce( data => this.document.fire( 'selectionChangeDone', data ), 200 );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tobserve() {\n\t\tconst document = this.document;\n\n\t\tdocument.on( 'keydown', ( eventInfo, data ) => {\n\t\t\tconst selection = document.selection;\n\n\t\t\tif ( selection.isFake && _isArrowKeyCode( data.keyCode ) && this.isEnabled ) {\n\t\t\t\t// Prevents default key down handling - no selection change will occur.\n\t\t\t\tdata.preventDefault();\n\n\t\t\t\tthis._handleSelectionMove( data.keyCode );\n\t\t\t}\n\t\t}, { priority: 'lowest' } );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tdestroy() {\n\t\tsuper.destroy();\n\n\t\tthis._fireSelectionChangeDoneDebounced.cancel();\n\t}\n\n\t/**\n\t * Handles collapsing view selection according to given key code. If left or up key is provided - new selection will be\n\t * collapsed to left. If right or down key is pressed - new selection will be collapsed to right.\n\t *\n\t * This method fires {@link module:engine/view/document~Document#event:selectionChange} and\n\t * {@link module:engine/view/document~Document#event:selectionChangeDone} events imitating behaviour of\n\t * {@link module:engine/view/observer/selectionobserver~SelectionObserver}.\n\t *\n\t * @private\n\t * @param {Number} keyCode\n\t * @fires module:engine/view/document~Document#event:selectionChange\n\t * @fires module:engine/view/document~Document#event:selectionChangeDone\n\t */\n\t_handleSelectionMove( keyCode ) {\n\t\tconst selection = this.document.selection;\n\t\tconst newSelection = new ViewSelection( selection.getRanges(), { backward: selection.isBackward, fake: false } );\n\n\t\t// Left or up arrow pressed - move selection to start.\n\t\tif ( keyCode == keyCodes.arrowleft || keyCode == keyCodes.arrowup ) {\n\t\t\tnewSelection.setTo( newSelection.getFirstPosition() );\n\t\t}\n\n\t\t// Right or down arrow pressed - move selection to end.\n\t\tif ( keyCode == keyCodes.arrowright || keyCode == keyCodes.arrowdown ) {\n\t\t\tnewSelection.setTo( newSelection.getLastPosition() );\n\t\t}\n\n\t\tconst data = {\n\t\t\toldSelection: selection,\n\t\t\tnewSelection,\n\t\t\tdomSelection: null\n\t\t};\n\n\t\t// Fire dummy selection change event.\n\t\tthis.document.fire( 'selectionChange', data );\n\n\t\t// Call` #_fireSelectionChangeDoneDebounced` every time when `selectionChange` event is fired.\n\t\t// This function is debounced what means that `selectionChangeDone` event will be fired only when\n\t\t// defined int the function time will elapse since the last time the function was called.\n\t\t// So `selectionChangeDone` will be fired when selection will stop changing.\n\t\tthis._fireSelectionChangeDoneDebounced( data );\n\t}\n}\n\n// Checks if one of the arrow keys is pressed.\n//\n// @private\n// @param {Number} keyCode\n// @returns {Boolean}\nfunction _isArrowKeyCode( keyCode ) {\n\treturn keyCode == keyCodes.arrowright ||\n\t\tkeyCode == keyCodes.arrowleft ||\n\t\tkeyCode == keyCodes.arrowup ||\n\t\tkeyCode == keyCodes.arrowdown;\n}\n\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module engine/view/observer/selectionobserver\n */\n\n/* global setInterval, clearInterval */\n\nimport Observer from './observer';\nimport MutationObserver from './mutationobserver';\nimport { debounce } from 'lodash-es';\n\n/**\n * Selection observer class observes selection changes in the document. If selection changes on the document this\n * observer checks if there are any mutations and if DOM selection is different than the\n * {@link module:engine/view/document~Document#selection view selection}. Selection observer fires\n * {@link module:engine/view/document~Document#event:selectionChange} event only if selection change was the only change in the document\n * and DOM selection is different then the view selection.\n *\n * Note that this observer is attached by the {@link module:engine/view/view~View} and is available by default.\n *\n * @see module:engine/view/observer/mutationobserver~MutationObserver\n * @extends module:engine/view/observer/observer~Observer\n */\nexport default class SelectionObserver extends Observer {\n\tconstructor( view ) {\n\t\tsuper( view );\n\n\t\t/**\n\t\t * Instance of the mutation observer. Selection observer calls\n\t\t * {@link module:engine/view/observer/mutationobserver~MutationObserver#flush} to ensure that the mutations will be handled\n\t\t * before the {@link module:engine/view/document~Document#event:selectionChange} event is fired.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/observer/mutationobserver~MutationObserver}\n\t\t * module:engine/view/observer/selectionobserver~SelectionObserver#mutationObserver\n\t\t */\n\t\tthis.mutationObserver = view.getObserver( MutationObserver );\n\n\t\t/**\n\t\t * Reference to the view {@link module:engine/view/documentselection~DocumentSelection} object used to compare\n\t\t * new selection with it.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/documentselection~DocumentSelection}\n\t\t * module:engine/view/observer/selectionobserver~SelectionObserver#selection\n\t\t */\n\t\tthis.selection = this.document.selection;\n\n\t\t/* eslint-disable max-len */\n\t\t/**\n\t\t * Reference to the {@link module:engine/view/view~View#domConverter}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:engine/view/domconverter~DomConverter} module:engine/view/observer/selectionobserver~SelectionObserver#domConverter\n\t\t */\n\t\t/* eslint-enable max-len */\n\t\tthis.domConverter = view.domConverter;\n\n\t\t/**\n\t\t * Set of documents which have added \"selectionchange\" listener to avoid adding listener twice to the same\n\t\t * document.\n\t\t *\n\t\t * @private\n\t\t * @member {WeakSet.} module:engine/view/observer/selectionobserver~SelectionObserver#_documents\n\t\t */\n\t\tthis._documents = new WeakSet();\n\n\t\t/**\n\t\t * Fires debounced event `selectionChangeDone`. It uses `lodash#debounce` method to delay function call.\n\t\t *\n\t\t * @private\n\t\t * @param {Object} data Selection change data.\n\t\t * @method #_fireSelectionChangeDoneDebounced\n\t\t */\n\t\tthis._fireSelectionChangeDoneDebounced = debounce( data => this.document.fire( 'selectionChangeDone', data ), 200 );\n\n\t\tthis._clearInfiniteLoopInterval = setInterval( () => this._clearInfiniteLoop(), 1000 );\n\n\t\t/**\n\t\t * Private property to check if the code does not enter infinite loop.\n\t\t *\n\t\t * @private\n\t\t * @member {Number} module:engine/view/observer/selectionobserver~SelectionObserver#_loopbackCounter\n\t\t */\n\t\tthis._loopbackCounter = 0;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tobserve( domElement ) {\n\t\tconst domDocument = domElement.ownerDocument;\n\n\t\t// Add listener once per each document.\n\t\tif ( this._documents.has( domDocument ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tthis.listenTo( domDocument, 'selectionchange', () => {\n\t\t\tthis._handleSelectionChange( domDocument );\n\t\t} );\n\n\t\tthis._documents.add( domDocument );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tdestroy() {\n\t\tsuper.destroy();\n\n\t\tclearInterval( this._clearInfiniteLoopInterval );\n\t\tthis._fireSelectionChangeDoneDebounced.cancel();\n\t}\n\n\t/**\n\t * Selection change listener. {@link module:engine/view/observer/mutationobserver~MutationObserver#flush Flush} mutations, check if\n\t * selection changes and fires {@link module:engine/view/document~Document#event:selectionChange} event on every change\n\t * and {@link module:engine/view/document~Document#event:selectionChangeDone} when selection stop changing.\n\t *\n\t * @private\n\t * @param {Document} domDocument DOM document.\n\t */\n\t_handleSelectionChange( domDocument ) {\n\t\t// Selection is handled when document is not focused but is read-only. This is because in read-only\n\t\t// mode contenteditable is set as false and editor won't receive focus but we still need to know\n\t\t// selection position.\n\t\tif ( !this.isEnabled || ( !this.document.isFocused && !this.document.isReadOnly ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Ensure the mutation event will be before selection event on all browsers.\n\t\tthis.mutationObserver.flush();\n\n\t\t// If there were mutations then the view will be re-rendered by the mutation observer and selection\n\t\t// will be updated, so selections will equal and event will not be fired, as expected.\n\t\tconst domSelection = domDocument.defaultView.getSelection();\n\t\tconst newViewSelection = this.domConverter.domSelectionToView( domSelection );\n\n\t\tif ( this.selection.isEqual( newViewSelection ) && this.domConverter.isDomSelectionCorrect( domSelection ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Ensure we are not in the infinite loop (#400).\n\t\t// This counter is reset each second. 60 selection changes in 1 second is enough high number\n\t\t// to be very difficult (impossible) to achieve using just keyboard keys (during normal editor use).\n\t\tif ( ++this._loopbackCounter > 60 ) {\n\t\t\t// Selection change observer detected an infinite rendering loop.\n\t\t\t// Most probably you try to put the selection in the position which is not allowed\n\t\t\t// by the browser and browser fixes it automatically what causes `selectionchange` event on\n\t\t\t// which a loopback through a model tries to re-render the wrong selection and again.\n\t\t\t//\n\t\t\t// @if CK_DEBUG // console.warn( 'Selection change observer detected an infinite rendering loop.' );\n\n\t\t\treturn;\n\t\t}\n\n\t\tif ( this.selection.isSimilar( newViewSelection ) ) {\n\t\t\t// If selection was equal and we are at this point of algorithm, it means that it was incorrect.\n\t\t\t// Just re-render it, no need to fire any events, etc.\n\t\t\tthis.view.forceRender();\n\t\t} else {\n\t\t\tconst data = {\n\t\t\t\toldSelection: this.selection,\n\t\t\t\tnewSelection: newViewSelection,\n\t\t\t\tdomSelection\n\t\t\t};\n\n\t\t\t// Prepare data for new selection and fire appropriate events.\n\t\t\tthis.document.fire( 'selectionChange', data );\n\n\t\t\t// Call` #_fireSelectionChangeDoneDebounced` every time when `selectionChange` event is fired.\n\t\t\t// This function is debounced what means that `selectionChangeDone` event will be fired only when\n\t\t\t// defined int the function time will elapse since the last time the function was called.\n\t\t\t// So `selectionChangeDone` will be fired when selection will stop changing.\n\t\t\tthis._fireSelectionChangeDoneDebounced( data );\n\t\t}\n\t}\n\n\t/**\n\t * Clears `SelectionObserver` internal properties connected with preventing infinite loop.\n\t *\n\t * @protected\n\t */\n\t_clearInfiniteLoop() {\n\t\tthis._loopbackCounter = 0;\n\t}\n}\n\n/**\n * Fired when selection has changed. This event is fired only when the selection change was the only change that happened\n * in the document, and old selection is different then the new selection.\n *\n * Introduced by {@link module:engine/view/observer/selectionobserver~SelectionObserver}.\n *\n * Note that because {@link module:engine/view/observer/selectionobserver~SelectionObserver} is attached by the\n * {@link module:engine/view/view~View} this event is available by default.\n *\n * @see module:engine/view/observer/selectionobserver~SelectionObserver\n * @event module:engine/view/document~Document#event:selectionChange\n * @param {Object} data\n * @param {module:engine/view/documentselection~DocumentSelection} data.oldSelection Old View selection which is\n * {@link module:engine/view/document~Document#selection}.\n * @param {module:engine/view/selection~Selection} data.newSelection New View selection which is converted DOM selection.\n * @param {Selection} data.domSelection Native DOM selection.\n */\n\n/**\n * Fired when selection stops changing.\n *\n * Introduced by {@link module:engine/view/observer/selectionobserver~SelectionObserver}.\n *\n * Note that because {@link module:engine/view/observer/selectionobserver~SelectionObserver} is attached by the\n * {@link module:engine/view/view~View} this event is available by default.\n *\n * @see module:engine/view/observer/selectionobserver~SelectionObserver\n * @event module:engine/view/document~Document#event:selectionChangeDone\n * @param {Object} data\n * @param {module:engine/view/documentselection~DocumentSelection} data.oldSelection Old View selection which is\n * {@link module:engine/view/document~Document#selection}.\n * @param {module:engine/view/selection~Selection} data.newSelection New View selection which is converted DOM selection.\n * @param {Selection} data.domSelection Native DOM selection.\n */\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module engine/view/observer/focusobserver\n */\n\n/* globals setTimeout, clearTimeout */\n\nimport DomEventObserver from './domeventobserver';\n\n/**\n * {@link module:engine/view/document~Document#event:focus Focus}\n * and {@link module:engine/view/document~Document#event:blur blur} events observer.\n * Focus observer handle also {@link module:engine/view/rooteditableelement~RootEditableElement#isFocused isFocused} property of the\n * {@link module:engine/view/rooteditableelement~RootEditableElement root elements}.\n *\n * Note that this observer is attached by the {@link module:engine/view/view~View} and is available by default.\n *\n * @extends module:engine/view/observer/domeventobserver~DomEventObserver\n */\nexport default class FocusObserver extends DomEventObserver {\n\tconstructor( view ) {\n\t\tsuper( view );\n\n\t\tthis.domEventType = [ 'focus', 'blur' ];\n\t\tthis.useCapture = true;\n\t\tconst document = this.document;\n\n\t\tdocument.on( 'focus', () => {\n\t\t\tdocument.isFocused = true;\n\n\t\t\t// Unfortunately native `selectionchange` event is fired asynchronously.\n\t\t\t// We need to wait until `SelectionObserver` handle the event and then render. Otherwise rendering will\n\t\t\t// overwrite new DOM selection with selection from the view.\n\t\t\t// See https://github.com/ckeditor/ckeditor5-engine/issues/795 for more details.\n\t\t\t// Long timeout is needed to solve #676 and https://github.com/ckeditor/ckeditor5-engine/issues/1157 issues.\n\t\t\tthis._renderTimeoutId = setTimeout( () => view.forceRender(), 50 );\n\t\t} );\n\n\t\tdocument.on( 'blur', ( evt, data ) => {\n\t\t\tconst selectedEditable = document.selection.editableElement;\n\n\t\t\tif ( selectedEditable === null || selectedEditable === data.target ) {\n\t\t\t\tdocument.isFocused = false;\n\n\t\t\t\t// Re-render the document to update view elements.\n\t\t\t\tview.forceRender();\n\t\t\t}\n\t\t} );\n\n\t\t/**\n\t\t * Identifier of the timeout currently used by focus listener to delay rendering execution.\n\t\t *\n\t\t * @private\n\t\t * @member {Number} #_renderTimeoutId\n\t\t */\n\t}\n\n\tonDomEvent( domEvent ) {\n\t\tthis.fire( domEvent.type, domEvent );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tdestroy() {\n\t\tif ( this._renderTimeoutId ) {\n\t\t\tclearTimeout( this._renderTimeoutId );\n\t\t}\n\n\t\tsuper.destroy();\n\t}\n}\n\n/**\n * Fired when one of the editables gets focus.\n *\n * Introduced by {@link module:engine/view/observer/focusobserver~FocusObserver}.\n *\n * Note that because {@link module:engine/view/observer/focusobserver~FocusObserver} is attached by the\n * {@link module:engine/view/view~View} this event is available by default.\n *\n * @see module:engine/view/observer/focusobserver~FocusObserver\n * @event module:engine/view/document~Document#event:focus\n * @param {module:engine/view/observer/domeventdata~DomEventData} data Event data.\n */\n\n/**\n * Fired when one of the editables loses focus.\n *\n * Introduced by {@link module:engine/view/observer/focusobserver~FocusObserver}.\n *\n * Note that because {@link module:engine/view/observer/focusobserver~FocusObserver} is attached by the\n * {@link module:engine/view/view~View} this event is available by default.\n *\n * @see module:engine/view/observer/focusobserver~FocusObserver\n * @event module:engine/view/document~Document#event:blur\n * @param {module:engine/view/observer/domeventdata~DomEventData} data Event data.\n */\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module engine/view/observer/compositionobserver\n */\n\nimport DomEventObserver from './domeventobserver';\n\n/**\n * {@link module:engine/view/document~Document#event:compositionstart Compositionstart},\n * {@link module:engine/view/document~Document#event:compositionupdate compositionupdate} and\n * {@link module:engine/view/document~Document#event:compositionend compositionend} events observer.\n *\n * Note that this observer is attached by the {@link module:engine/view/view~View} and is available by default.\n *\n * @extends module:engine/view/observer/domeventobserver~DomEventObserver\n */\nexport default class CompositionObserver extends DomEventObserver {\n\tconstructor( view ) {\n\t\tsuper( view );\n\n\t\tthis.domEventType = [ 'compositionstart', 'compositionupdate', 'compositionend' ];\n\t\tconst document = this.document;\n\n\t\tdocument.on( 'compositionstart', () => {\n\t\t\tdocument.isComposing = true;\n\t\t} );\n\n\t\tdocument.on( 'compositionend', () => {\n\t\t\tdocument.isComposing = false;\n\t\t} );\n\t}\n\n\tonDomEvent( domEvent ) {\n\t\tthis.fire( domEvent.type, domEvent );\n\t}\n}\n\n/**\n * Fired when composition starts inside one of the editables.\n *\n * Introduced by {@link module:engine/view/observer/compositionobserver~CompositionObserver}.\n *\n * Note that because {@link module:engine/view/observer/compositionobserver~CompositionObserver} is attached by the\n * {@link module:engine/view/view~View} this event is available by default.\n *\n * @see module:engine/view/observer/compositionobserver~CompositionObserver\n * @event module:engine/view/document~Document#event:compositionstart\n * @param {module:engine/view/observer/domeventdata~DomEventData} data Event data.\n */\n\n/**\n * Fired when composition is updated inside one of the editables.\n *\n * Introduced by {@link module:engine/view/observer/compositionobserver~CompositionObserver}.\n *\n * Note that because {@link module:engine/view/observer/compositionobserver~CompositionObserver} is attached by the\n * {@link module:engine/view/view~View} this event is available by default.\n *\n * @see module:engine/view/observer/compositionobserver~CompositionObserver\n * @event module:engine/view/document~Document#event:compositionupdate\n * @param {module:engine/view/observer/domeventdata~DomEventData} data Event data.\n */\n\n/**\n * Fired when composition ends inside one of the editables.\n *\n * Introduced by {@link module:engine/view/observer/compositionobserver~CompositionObserver}.\n *\n * Note that because {@link module:engine/view/observer/compositionobserver~CompositionObserver} is attached by the\n * {@link module:engine/view/view~View} this event is available by default.\n *\n * @see module:engine/view/observer/compositionobserver~CompositionObserver\n * @event module:engine/view/document~Document#event:compositionend\n * @param {module:engine/view/observer/domeventdata~DomEventData} data Event data.\n */\n","/**\n * @license Copyright (c) 2003-2018, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md.\n */\n\n/**\n * @module engine/view/observer/inputobserver\n */\n\nimport DomEventObserver from './domeventobserver';\n\n/**\n * Observer for events connected with data input.\n *\n * Note that this observer is attached by the {@link module:engine/view/view~View} and is available by default.\n *\n * @extends module:engine/view/observer/domeventobserver~DomEventObserver\n */\nexport default class InputObserver extends DomEventObserver {\n\tconstructor( view ) {\n\t\tsuper( view );\n\n\t\tthis.domEventType = [ 'beforeinput' ];\n\t}\n\n\tonDomEvent( domEvent ) {\n\t\tthis.fire( domEvent.type, domEvent );\n\t}\n}\n\n/**\n * Fired before browser inputs (or deletes) some data.\n *\n * This event is available only on browsers which support DOM `beforeinput` event.\n *\n * Introduced by {@link module:engine/view/observer/inputobserver~InputObserver}.\n *\n * Note that because {@link module:engine/view/observer/inputobserver~InputObserver} is attached by the\n * {@link module:engine/view/view~View} this event is available by default.\n *\n * @see module:engine/view/observer/inputobserver~InputObserver\n * @event module:engine/view/document~Document#event:beforeinput\n * @param {module:engine/view/observer/domeventdata~DomEventData} data Event data.\n */\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module utils/dom/isrange\n */\n\n/**\n * Checks if the object is a native DOM Range.\n *\n * @param {*} obj\n * @returns {Boolean}\n */\nexport default function isRange( obj ) {\n\treturn Object.prototype.toString.apply( obj ) == '[object Range]';\n}\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module utils/dom/getborderwidths\n */\n\n/**\n * Returns an object containing CSS border widths of a specified HTML element.\n *\n * @param {HTMLElement} element An element which has CSS borders.\n * @returns {Object} An object containing `top`, `left`, `right` and `bottom` properties\n * with numerical values of the `border-[top,left,right,bottom]-width` CSS styles.\n */\nexport default function getBorderWidths( element ) {\n\t// Call getComputedStyle on the window the element document belongs to.\n\tconst style = element.ownerDocument.defaultView.getComputedStyle( element );\n\n\treturn {\n\t\ttop: parseInt( style.borderTopWidth, 10 ),\n\t\tright: parseInt( style.borderRightWidth, 10 ),\n\t\tbottom: parseInt( style.borderBottomWidth, 10 ),\n\t\tleft: parseInt( style.borderLeftWidth, 10 )\n\t};\n}\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module utils/dom/rect\n */\n\nimport isRange from './isrange';\nimport isWindow from './iswindow';\nimport getBorderWidths from './getborderwidths';\nimport isText from './istext';\nimport { isElement } from 'lodash-es';\n\nconst rectProperties = [ 'top', 'right', 'bottom', 'left', 'width', 'height' ];\n\n/**\n * A helper class representing a `ClientRect` object, e.g. value returned by\n * the native `object.getBoundingClientRect()` method. Provides a set of methods\n * to manipulate the rect and compare it against other rect instances.\n */\nexport default class Rect {\n\t/**\n\t * Creates an instance of rect.\n\t *\n\t *\t\t// Rect of an HTMLElement.\n\t *\t\tconst rectA = new Rect( document.body );\n\t *\n\t *\t\t// Rect of a DOM Range.\n\t *\t\tconst rectB = new Rect( document.getSelection().getRangeAt( 0 ) );\n\t *\n\t *\t\t// Rect of a window (web browser viewport).\n\t *\t\tconst rectC = new Rect( window );\n\t *\n\t *\t\t// Rect out of an object.\n\t *\t\tconst rectD = new Rect( { top: 0, right: 10, bottom: 10, left: 0, width: 10, height: 10 } );\n\t *\n\t *\t\t// Rect out of another Rect instance.\n\t *\t\tconst rectE = new Rect( rectD );\n\t *\n\t *\t\t// Rect out of a ClientRect.\n\t *\t\tconst rectF = new Rect( document.body.getClientRects().item( 0 ) );\n\t *\n\t * **Note**: By default a rect of an HTML element includes its CSS borders and scrollbars (if any)\n\t * ant the rect of a `window` includes scrollbars too. Use {@link #excludeScrollbarsAndBorders}\n\t * to get the inner part of the rect.\n\t *\n\t * @param {HTMLElement|Range|Window|ClientRect|module:utils/dom/rect~Rect|Object} source A source object to create the rect.\n\t */\n\tconstructor( source ) {\n\t\tconst isSourceRange = isRange( source );\n\n\t\t/**\n\t\t * The object this rect is for.\n\t\t *\n\t\t * @protected\n\t\t * @readonly\n\t\t * @member {HTMLElement|Range|ClientRect|module:utils/dom/rect~Rect|Object} #_source\n\t\t */\n\t\tObject.defineProperty( this, '_source', {\n\t\t\t// If the source is a Rect instance, copy it's #_source.\n\t\t\tvalue: source._source || source,\n\t\t\twritable: true,\n\t\t\tenumerable: false\n\t\t} );\n\n\t\tif ( isElement( source ) || isSourceRange ) {\n\t\t\t// The `Rect` class depends on `getBoundingClientRect` and `getClientRects` DOM methods. If the source\n\t\t\t// of a rect in an HTML element or a DOM range but it does not belong to any rendered DOM tree, these methods\n\t\t\t// will fail to obtain the geometry and the rect instance makes little sense to the features using it.\n\t\t\t// To get rid of this warning make sure the source passed to the constructor is a descendant of `window.document.body`.\n\t\t\t// @if CK_DEBUG // const sourceNode = isSourceRange ? source.startContainer : source;\n\t\t\t// @if CK_DEBUG // if ( !sourceNode.ownerDocument || !sourceNode.ownerDocument.body.contains( sourceNode ) ) {\n\t\t\t// @if CK_DEBUG // \tconsole.warn(\n\t\t\t// @if CK_DEBUG // \t\t'rect-source-not-in-dom: The source of this rect does not belong to any rendered DOM tree.',\n\t\t\t// @if CK_DEBUG // \t\t{ source } );\n\t\t\t// @if CK_DEBUG // }\n\n\t\t\tif ( isSourceRange ) {\n\t\t\t\tcopyRectProperties( this, Rect.getDomRangeRects( source )[ 0 ] );\n\t\t\t} else {\n\t\t\t\tcopyRectProperties( this, source.getBoundingClientRect() );\n\t\t\t}\n\t\t} else if ( isWindow( source ) ) {\n\t\t\tconst { innerWidth, innerHeight } = source;\n\n\t\t\tcopyRectProperties( this, {\n\t\t\t\ttop: 0,\n\t\t\t\tright: innerWidth,\n\t\t\t\tbottom: innerHeight,\n\t\t\t\tleft: 0,\n\t\t\t\twidth: innerWidth,\n\t\t\t\theight: innerHeight\n\t\t\t} );\n\t\t} else {\n\t\t\tcopyRectProperties( this, source );\n\t\t}\n\n\t\t/**\n\t\t * The \"top\" value of the rect.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Number} #top\n\t\t */\n\n\t\t/**\n\t\t * The \"right\" value of the rect.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Number} #right\n\t\t */\n\n\t\t/**\n\t\t * The \"bottom\" value of the rect.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Number} #bottom\n\t\t */\n\n\t\t/**\n\t\t * The \"left\" value of the rect.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Number} #left\n\t\t */\n\n\t\t/**\n\t\t * The \"width\" value of the rect.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Number} #width\n\t\t */\n\n\t\t/**\n\t\t * The \"height\" value of the rect.\n\t\t *\n\t\t * @readonly\n\t\t * @member {Number} #height\n\t\t */\n\t}\n\n\t/**\n\t * Returns a clone of the rect.\n\t *\n\t * @returns {module:utils/dom/rect~Rect} A cloned rect.\n\t */\n\tclone() {\n\t\treturn new Rect( this );\n\t}\n\n\t/**\n\t * Moves the rect so that its upper–left corner lands in desired `[ x, y ]` location.\n\t *\n\t * @param {Number} x Desired horizontal location.\n\t * @param {Number} y Desired vertical location.\n\t * @returns {module:utils/dom/rect~Rect} A rect which has been moved.\n\t */\n\tmoveTo( x, y ) {\n\t\tthis.top = y;\n\t\tthis.right = x + this.width;\n\t\tthis.bottom = y + this.height;\n\t\tthis.left = x;\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Moves the rect in–place by a dedicated offset.\n\t *\n\t * @param {Number} x A horizontal offset.\n\t * @param {Number} y A vertical offset\n\t * @returns {module:utils/dom/rect~Rect} A rect which has been moved.\n\t */\n\tmoveBy( x, y ) {\n\t\tthis.top += y;\n\t\tthis.right += x;\n\t\tthis.left += x;\n\t\tthis.bottom += y;\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Returns a new rect a a result of intersection with another rect.\n\t *\n\t * @param {module:utils/dom/rect~Rect} anotherRect\n\t * @returns {module:utils/dom/rect~Rect}\n\t */\n\tgetIntersection( anotherRect ) {\n\t\tconst rect = {\n\t\t\ttop: Math.max( this.top, anotherRect.top ),\n\t\t\tright: Math.min( this.right, anotherRect.right ),\n\t\t\tbottom: Math.min( this.bottom, anotherRect.bottom ),\n\t\t\tleft: Math.max( this.left, anotherRect.left )\n\t\t};\n\n\t\trect.width = rect.right - rect.left;\n\t\trect.height = rect.bottom - rect.top;\n\n\t\tif ( rect.width < 0 || rect.height < 0 ) {\n\t\t\treturn null;\n\t\t} else {\n\t\t\treturn new Rect( rect );\n\t\t}\n\t}\n\n\t/**\n\t * Returns the area of intersection with another rect.\n\t *\n\t * @param {module:utils/dom/rect~Rect} anotherRect [description]\n\t * @returns {Number} Area of intersection.\n\t */\n\tgetIntersectionArea( anotherRect ) {\n\t\tconst rect = this.getIntersection( anotherRect );\n\n\t\tif ( rect ) {\n\t\t\treturn rect.getArea();\n\t\t} else {\n\t\t\treturn 0;\n\t\t}\n\t}\n\n\t/**\n\t * Returns the area of the rect.\n\t *\n\t * @returns {Number}\n\t */\n\tgetArea() {\n\t\treturn this.width * this.height;\n\t}\n\n\t/**\n\t * Returns a new rect, a part of the original rect, which is actually visible to the user,\n\t * e.g. an original rect cropped by parent element rects which have `overflow` set in CSS\n\t * other than `\"visible\"`.\n\t *\n\t * If there's no such visible rect, which is when the rect is limited by one or many of\n\t * the ancestors, `null` is returned.\n\t *\n\t * @returns {module:utils/dom/rect~Rect|null} A visible rect instance or `null`, if there's none.\n\t */\n\tgetVisible() {\n\t\tconst source = this._source;\n\t\tlet visibleRect = this.clone();\n\n\t\t// There's no ancestor to crop with the overflow.\n\t\tif ( !isBody( source ) ) {\n\t\t\tlet parent = source.parentNode || source.commonAncestorContainer;\n\n\t\t\t// Check the ancestors all the way up to the .\n\t\t\twhile ( parent && !isBody( parent ) ) {\n\t\t\t\tconst parentRect = new Rect( parent );\n\t\t\t\tconst intersectionRect = visibleRect.getIntersection( parentRect );\n\n\t\t\t\tif ( intersectionRect ) {\n\t\t\t\t\tif ( intersectionRect.getArea() < visibleRect.getArea() ) {\n\t\t\t\t\t\t// Reduce the visible rect to the intersection.\n\t\t\t\t\t\tvisibleRect = intersectionRect;\n\t\t\t\t\t}\n\t\t\t\t} else {\n\t\t\t\t\t// There's no intersection, the rect is completely invisible.\n\t\t\t\t\treturn null;\n\t\t\t\t}\n\n\t\t\t\tparent = parent.parentNode;\n\t\t\t}\n\t\t}\n\n\t\treturn visibleRect;\n\t}\n\n\t/**\n\t * Checks if all property values ({@link #top}, {@link #left}, {@link #right},\n\t * {@link #bottom}, {@link #width} and {@link #height}) are the equal in both rect\n\t * instances.\n\t *\n\t * @param {module:utils/dom/rect~Rect} rect A rect instance to compare with.\n\t * @returns {Boolean} `true` when Rects are equal. `false` otherwise.\n\t */\n\tisEqual( anotherRect ) {\n\t\tfor ( const prop of rectProperties ) {\n\t\t\tif ( this[ prop ] !== anotherRect[ prop ] ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Checks whether a rect fully contains another rect instance.\n\t *\n\t * @param {module:utils/dom/rect~Rect} anotherRect\n\t * @returns {Boolean} `true` if contains, `false` otherwise.\n\t */\n\tcontains( anotherRect ) {\n\t\tconst intersectRect = this.getIntersection( anotherRect );\n\n\t\treturn !!( intersectRect && intersectRect.isEqual( anotherRect ) );\n\t}\n\n\t/**\n\t * Excludes scrollbars and CSS borders from the rect.\n\t *\n\t * * Borders are removed when {@link #_source} is an HTML element.\n\t * * Scrollbars are excluded from HTML elements and the `window`.\n\t *\n\t * @returns {module:utils/dom/rect~Rect} A rect which has been updated.\n\t */\n\texcludeScrollbarsAndBorders() {\n\t\tconst source = this._source;\n\t\tlet scrollBarWidth, scrollBarHeight, direction;\n\n\t\tif ( isWindow( source ) ) {\n\t\t\tscrollBarWidth = source.innerWidth - source.document.documentElement.clientWidth;\n\t\t\tscrollBarHeight = source.innerHeight - source.document.documentElement.clientHeight;\n\t\t\tdirection = source.getComputedStyle( source.document.documentElement ).direction;\n\t\t} else {\n\t\t\tconst borderWidths = getBorderWidths( this._source );\n\n\t\t\tscrollBarWidth = source.offsetWidth - source.clientWidth - borderWidths.left - borderWidths.right;\n\t\t\tscrollBarHeight = source.offsetHeight - source.clientHeight - borderWidths.top - borderWidths.bottom;\n\t\t\tdirection = source.ownerDocument.defaultView.getComputedStyle( source ).direction;\n\n\t\t\tthis.left += borderWidths.left;\n\t\t\tthis.top += borderWidths.top;\n\t\t\tthis.right -= borderWidths.right;\n\t\t\tthis.bottom -= borderWidths.bottom;\n\t\t\tthis.width = this.right - this.left;\n\t\t\tthis.height = this.bottom - this.top;\n\t\t}\n\n\t\tthis.width -= scrollBarWidth;\n\n\t\tif ( direction === 'ltr' ) {\n\t\t\tthis.right -= scrollBarWidth;\n\t\t} else {\n\t\t\tthis.left += scrollBarWidth;\n\t\t}\n\n\t\tthis.height -= scrollBarHeight;\n\t\tthis.bottom -= scrollBarHeight;\n\n\t\treturn this;\n\t}\n\n\t/**\n\t * Returns an array of rects of the given native DOM Range.\n\t *\n\t * @param {Range} range A native DOM range.\n\t * @returns {Array.} DOM Range rects.\n\t */\n\tstatic getDomRangeRects( range ) {\n\t\tconst rects = [];\n\t\t// Safari does not iterate over ClientRectList using for...of loop.\n\t\tconst clientRects = Array.from( range.getClientRects() );\n\n\t\tif ( clientRects.length ) {\n\t\t\tfor ( const rect of clientRects ) {\n\t\t\t\trects.push( new Rect( rect ) );\n\t\t\t}\n\t\t}\n\t\t// If there's no client rects for the Range, use parent container's bounding rect\n\t\t// instead and adjust rect's width to simulate the actual geometry of such range.\n\t\t// https://github.com/ckeditor/ckeditor5-utils/issues/153\n\t\t// https://github.com/ckeditor/ckeditor5-ui/issues/317\n\t\telse {\n\t\t\tlet startContainer = range.startContainer;\n\n\t\t\tif ( isText( startContainer ) ) {\n\t\t\t\tstartContainer = startContainer.parentNode;\n\t\t\t}\n\n\t\t\tconst rect = new Rect( startContainer.getBoundingClientRect() );\n\t\t\trect.right = rect.left;\n\t\t\trect.width = 0;\n\n\t\t\trects.push( rect );\n\t\t}\n\n\t\treturn rects;\n\t}\n}\n\n// Acquires all the rect properties from the passed source.\n//\n// @private\n// @param {module:utils/dom/rect~Rect} rect\n// @param {ClientRect|module:utils/dom/rect~Rect|Object} source\nfunction copyRectProperties( rect, source ) {\n\tfor ( const p of rectProperties ) {\n\t\trect[ p ] = source[ p ];\n\t}\n}\n\n// Checks if provided object is a HTML element.\n//\n// @private\n// @param {HTMLElement|Range} elementOrRange\n// @returns {Boolean}\nfunction isBody( elementOrRange ) {\n\tif ( !isElement( elementOrRange ) ) {\n\t\treturn false;\n\t}\n\n\treturn elementOrRange === elementOrRange.ownerDocument.body;\n}\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module utils/dom/scroll\n */\n\nimport isRange from './isrange';\nimport Rect from './rect';\nimport isText from './istext';\n\nconst utils = {};\n\n/**\n * Makes any page `HTMLElement` or `Range` (`target`) visible inside the browser viewport.\n * This helper will scroll all `target` ancestors and the web browser viewport to reveal the target to\n * the user. If the `target` is already visible, nothing will happen.\n *\n * @param {HTMLElement|Range} options.target A target, which supposed to become visible to the user.\n * @param {Number} [options.viewportOffset] An offset from the edge of the viewport (in pixels)\n * the `target` will be moved by when the viewport is scrolled. It enhances the user experience\n * by keeping the `target` some distance from the edge of the viewport and thus making it easier to\n * read or edit by the user.\n */\nexport function scrollViewportToShowTarget( { target, viewportOffset = 0 } ) {\n\tconst targetWindow = getWindow( target );\n\tlet currentWindow = targetWindow;\n\tlet currentFrame = null;\n\n\t// Iterate over all windows, starting from target's parent window up to window#top.\n\twhile ( currentWindow ) {\n\t\tlet firstAncestorToScroll;\n\n\t\t// Let's scroll target's ancestors first to reveal it. Then, once the ancestor scrolls\n\t\t// settled down, the algorithm can eventually scroll the viewport of the current window.\n\t\t//\n\t\t// Note: If the current window is target's **original** window (e.g. the first one),\n\t\t// start scrolling the closest parent of the target. If not, scroll the closest parent\n\t\t// of an iframe that resides in the current window.\n\t\tif ( currentWindow == targetWindow ) {\n\t\t\tfirstAncestorToScroll = getParentElement( target );\n\t\t} else {\n\t\t\tfirstAncestorToScroll = getParentElement( currentFrame );\n\t\t}\n\n\t\t// Scroll the target's ancestors first. Once done, scrolling the viewport is easy.\n\t\tscrollAncestorsToShowRect( firstAncestorToScroll, () => {\n\t\t\t// Note: If the target does not belong to the current window **directly**,\n\t\t\t// i.e. it resides in an iframe belonging to the window, obtain the target's rect\n\t\t\t// in the coordinates of the current window. By default, a Rect returns geometry\n\t\t\t// relative to the current window's viewport. To make it work in a parent window,\n\t\t\t// it must be shifted.\n\t\t\treturn getRectRelativeToWindow( target, currentWindow );\n\t\t} );\n\n\t\t// Obtain the rect of the target after it has been scrolled within its ancestors.\n\t\t// It's time to scroll the viewport.\n\t\tconst targetRect = getRectRelativeToWindow( target, currentWindow );\n\n\t\tscrollWindowToShowRect( currentWindow, targetRect, viewportOffset );\n\n\t\tif ( currentWindow.parent != currentWindow ) {\n\t\t\t// Keep the reference to the ' + '';\n }\n },\n {\n name: 'spotify',\n url: [\n /^open\\.spotify\\.com\\/(artist\\/\\w+)/,\n /^open\\.spotify\\.com\\/(album\\/\\w+)/,\n /^open\\.spotify\\.com\\/(track\\/\\w+)/\n ],\n html: match => {\n const id = match[1];\n return '
' + `' + '
';\n }\n },\n {\n name: 'youtube',\n url: [\n /^(?:m\\.)?youtube\\.com\\/watch\\?v=([\\w-]+)/,\n /^(?:m\\.)?youtube\\.com\\/v\\/([\\w-]+)/,\n /^youtube\\.com\\/embed\\/([\\w-]+)/,\n /^youtu\\.be\\/([\\w-]+)/\n ],\n html: match => {\n const id = match[1];\n return '
' + `' + '
';\n }\n },\n {\n name: 'vimeo',\n url: [\n /^vimeo\\.com\\/(\\d+)/,\n /^vimeo\\.com\\/[^/]+\\/[^/]+\\/video\\/(\\d+)/,\n /^vimeo\\.com\\/album\\/[^/]+\\/video\\/(\\d+)/,\n /^vimeo\\.com\\/channels\\/[^/]+\\/(\\d+)/,\n /^vimeo\\.com\\/groups\\/[^/]+\\/videos\\/(\\d+)/,\n /^vimeo\\.com\\/ondemand\\/[^/]+\\/(\\d+)/,\n /^player\\.vimeo\\.com\\/video\\/(\\d+)/\n ],\n html: match => {\n const id = match[1];\n return '
' + `' + '
';\n }\n },\n {\n name: 'instagram',\n url: /^instagram\\.com\\/p\\/(\\w+)/\n },\n {\n name: 'twitter',\n url: /^twitter\\.com/\n },\n {\n name: 'googleMaps',\n url: /^google\\.com\\/maps/\n },\n {\n name: 'flickr',\n url: /^flickr\\.com/\n },\n {\n name: 'facebook',\n url: /^facebook\\.com/\n }\n ]\n });\n /**\n\t\t * The media registry managing the media providers in the editor.\n\t\t *\n\t\t * @member {module:media-embed/mediaregistry~MediaRegistry} #registry\n\t\t */\n this.registry = new MediaRegistry(editor.locale, editor.config.get('mediaEmbed'));\n }\n /**\n\t * @inheritDoc\n\t */\n init() {\n const editor = this.editor;\n const schema = editor.model.schema;\n const t = editor.t;\n const conversion = editor.conversion;\n const renderMediaPreview = editor.config.get('mediaEmbed.previewsInData');\n const registry = this.registry;\n editor.commands.add('mediaEmbed', new MediaEmbedCommand(editor));\n // Configure the schema.\n schema.register('media', {\n isObject: true,\n isBlock: true,\n allowWhere: '$block',\n allowAttributes: ['url']\n });\n // Model -> Data\n conversion.for('dataDowncast').elementToElement({\n model: 'media',\n view: (modelElement, viewWriter) => {\n const url = modelElement.getAttribute('url');\n return createMediaFigureElement(viewWriter, registry, url, { renderMediaPreview: url && renderMediaPreview });\n }\n });\n // Model -> Data (url -> data-oembed-url)\n conversion.for('dataDowncast').add(modelToViewUrlAttributeConverter(registry, { renderMediaPreview }));\n // Model -> View (element)\n conversion.for('editingDowncast').elementToElement({\n model: 'media',\n view: (modelElement, viewWriter) => {\n const url = modelElement.getAttribute('url');\n const figure = createMediaFigureElement(viewWriter, registry, url, { renderForEditingView: true });\n return toMediaWidget(figure, viewWriter, t('ap'));\n }\n });\n // Model -> View (url -> data-oembed-url)\n conversion.for('editingDowncast').add(modelToViewUrlAttributeConverter(registry, { renderForEditingView: true }));\n // View -> Model (data-oembed-url -> url)\n conversion.for('upcast') // Upcast semantic media.\n.elementToElement({\n view: {\n name: 'oembed',\n attributes: { url: true }\n },\n model: (viewMedia, modelWriter) => {\n const url = viewMedia.getAttribute('url');\n if (registry.hasMedia(url)) {\n return modelWriter.createElement('media', { url });\n }\n }\n }) // Upcast non-semantic media.\n.elementToElement({\n view: {\n name: 'div',\n attributes: { 'data-oembed-url': true }\n },\n model: (viewMedia, modelWriter) => {\n const url = viewMedia.getAttribute('data-oembed-url');\n if (registry.hasMedia(url)) {\n return modelWriter.createElement('media', { url });\n }\n }\n });\n }\n}","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module media-embed/automediaembed\n */\n\nimport MediaEmbedEditing from './mediaembedediting';\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport Clipboard from '@ckeditor/ckeditor5-clipboard/src/clipboard';\nimport LiveRange from '@ckeditor/ckeditor5-engine/src/model/liverange';\nimport LivePosition from '@ckeditor/ckeditor5-engine/src/model/liveposition';\nimport Undo from '@ckeditor/ckeditor5-undo/src/undo';\nimport global from '@ckeditor/ckeditor5-utils/src/dom/global';\nimport { insertMedia } from './utils';\n\nconst URL_REGEXP = /^(?:http(s)?:\\/\\/)?[\\w.-]+(?:\\.[\\w.-]+)+[\\w\\-._~:/?#[\\]@!$&'()*+,;=]+$/;\n\n/**\n * The auto-media embed plugin. It recognizes media links in the pasted content and embeds\n * them shortly after they are injected into the document.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class AutoMediaEmbed extends Plugin {\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get requires() {\n\t\treturn [ Clipboard, Undo ];\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tstatic get pluginName() {\n\t\treturn 'AutoMediaEmbed';\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tconstructor( editor ) {\n\t\tsuper( editor );\n\n\t\t/**\n\t\t * The paste–to–embed `setTimeout` ID. Stored as a property to allow\n\t\t * cleaning of the timeout.\n\t\t *\n\t\t * @private\n\t\t * @member {Number} #_timeoutId\n\t\t */\n\t\tthis._timeoutId = null;\n\n\t\t/**\n\t\t * The position where the `` element will be inserted after the timeout,\n\t\t * determined each time the new content is pasted into the document.\n\t\t *\n\t\t * @private\n\t\t * @member {module:engine/model/liveposition~LivePosition} #_positionToInsert\n\t\t */\n\t\tthis._positionToInsert = null;\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\tinit() {\n\t\tconst editor = this.editor;\n\t\tconst modelDocument = editor.model.document;\n\n\t\t// We need to listen on `Clipboard#inputTransformation` because we need to save positions of selection.\n\t\t// After pasting, the content between those positions will be checked for a URL that could be transformed\n\t\t// into media.\n\t\tthis.listenTo( editor.plugins.get( Clipboard ), 'inputTransformation', () => {\n\t\t\tconst firstRange = modelDocument.selection.getFirstRange();\n\n\t\t\tconst leftLivePosition = LivePosition.fromPosition( firstRange.start );\n\t\t\tleftLivePosition.stickiness = 'toPrevious';\n\n\t\t\tconst rightLivePosition = LivePosition.fromPosition( firstRange.end );\n\t\t\trightLivePosition.stickiness = 'toNext';\n\n\t\t\tmodelDocument.once( 'change:data', () => {\n\t\t\t\tthis._embedMediaBetweenPositions( leftLivePosition, rightLivePosition );\n\n\t\t\t\tleftLivePosition.detach();\n\t\t\t\trightLivePosition.detach();\n\t\t\t}, { priority: 'high' } );\n\t\t} );\n\n\t\teditor.commands.get( 'undo' ).on( 'execute', () => {\n\t\t\tif ( this._timeoutId ) {\n\t\t\t\tglobal.window.clearTimeout( this._timeoutId );\n\t\t\t\tthis._positionToInsert.detach();\n\n\t\t\t\tthis._timeoutId = null;\n\t\t\t\tthis._positionToInsert = null;\n\t\t\t}\n\t\t}, { priority: 'high' } );\n\t}\n\n\t/**\n\t * Analyzes the part of the document between provided positions in search for a URL representing media.\n\t * When the URL is found, it is automatically converted into media.\n\t *\n\t * @protected\n\t * @param {module:engine/model/liveposition~LivePosition} leftPosition Left position of the selection.\n\t * @param {module:engine/model/liveposition~LivePosition} rightPosition Right position of the selection.\n\t */\n\t_embedMediaBetweenPositions( leftPosition, rightPosition ) {\n\t\tconst editor = this.editor;\n\t\tconst mediaRegistry = editor.plugins.get( MediaEmbedEditing ).registry;\n\t\t// TODO: Use marker instead of LiveRange & LivePositions.\n\t\tconst urlRange = new LiveRange( leftPosition, rightPosition );\n\t\tconst walker = urlRange.getWalker( { ignoreElementEnd: true } );\n\n\t\tlet url = '';\n\n\t\tfor ( const node of walker ) {\n\t\t\tif ( node.item.is( 'textProxy' ) ) {\n\t\t\t\turl += node.item.data;\n\t\t\t}\n\t\t}\n\n\t\turl = url.trim();\n\n\t\t// If the URL does not match to universal URL regexp, let's skip that.\n\t\tif ( !url.match( URL_REGEXP ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// If the URL represents a media, let's use it.\n\t\tif ( !mediaRegistry.hasMedia( url ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst mediaEmbedCommand = editor.commands.get( 'mediaEmbed' );\n\n\t\t// Do not anything if media element cannot be inserted at the current position (#47).\n\t\tif ( !mediaEmbedCommand.isEnabled ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Position won't be available in the `setTimeout` function so let's clone it.\n\t\tthis._positionToInsert = LivePosition.fromPosition( leftPosition );\n\n\t\t// This action mustn't be executed if undo was called between pasting and auto-embedding.\n\t\tthis._timeoutId = global.window.setTimeout( () => {\n\t\t\teditor.model.change( writer => {\n\t\t\t\tthis._timeoutId = null;\n\n\t\t\t\twriter.remove( urlRange );\n\n\t\t\t\tlet insertionPosition;\n\n\t\t\t\t// Check if position where the media element should be inserted is still valid.\n\t\t\t\t// Otherwise leave it as undefined to use document.selection - default behavior of model.insertContent().\n\t\t\t\tif ( this._positionToInsert.root.rootName !== '$graveyard' ) {\n\t\t\t\t\tinsertionPosition = this._positionToInsert;\n\t\t\t\t}\n\n\t\t\t\tinsertMedia( editor.model, url, insertionPosition );\n\n\t\t\t\tthis._positionToInsert.detach();\n\t\t\t\tthis._positionToInsert = null;\n\t\t\t} );\n\t\t}, 100 );\n\t}\n}\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n/**\n * @module media-embed/ui/mediaformview\n */\nimport View from '@ckeditor/ckeditor5-ui/src/view';\nimport ViewCollection from '@ckeditor/ckeditor5-ui/src/viewcollection';\nimport ButtonView from '@ckeditor/ckeditor5-ui/src/button/buttonview';\nimport LabeledInputView from '@ckeditor/ckeditor5-ui/src/labeledinput/labeledinputview';\nimport InputTextView from '@ckeditor/ckeditor5-ui/src/inputtext/inputtextview';\nimport submitHandler from '@ckeditor/ckeditor5-ui/src/bindings/submithandler';\nimport FocusTracker from '@ckeditor/ckeditor5-utils/src/focustracker';\nimport FocusCycler from '@ckeditor/ckeditor5-ui/src/focuscycler';\nimport KeystrokeHandler from '@ckeditor/ckeditor5-utils/src/keystrokehandler';\nimport checkIcon from '@ckeditor/ckeditor5-core/theme/icons/check.svg';\nimport cancelIcon from '@ckeditor/ckeditor5-core/theme/icons/cancel.svg';\nimport '../../theme/mediaform.css';\n/**\n * The media form view controller class.\n *\n * See {@link module:media-embed/ui/mediaformview~MediaFormView}.\n *\n * @extends module:ui/view~View\n */\nexport default class MediaFormView extends View {\n /**\n\t * @param {Array.} validators Form validators used by {@link #isValid}.\n\t * @param {module:utils/locale~Locale} [locale] The localization services instance.\n\t */\n constructor(validators, locale) {\n super(locale);\n const t = locale.t;\n /**\n\t\t * Tracks information about DOM focus in the form.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:utils/focustracker~FocusTracker}\n\t\t */\n this.focusTracker = new FocusTracker();\n /**\n\t\t * An instance of the {@link module:utils/keystrokehandler~KeystrokeHandler}.\n\t\t *\n\t\t * @readonly\n\t\t * @member {module:utils/keystrokehandler~KeystrokeHandler}\n\t\t */\n this.keystrokes = new KeystrokeHandler();\n /**\n\t\t * The URL input view.\n\t\t *\n\t\t * @member {module:ui/labeledinput/labeledinputview~LabeledInputView}\n\t\t */\n this.urlInputView = this._createUrlInput();\n /**\n\t\t * The Save button view.\n\t\t *\n\t\t * @member {module:ui/button/buttonview~ButtonView}\n\t\t */\n this.saveButtonView = this._createButton(t('bf'), checkIcon, 'ck-button-save');\n this.saveButtonView.type = 'submit';\n /**\n\t\t * The Cancel button view.\n\t\t *\n\t\t * @member {module:ui/button/buttonview~ButtonView}\n\t\t */\n this.cancelButtonView = this._createButton(t('bg'), cancelIcon, 'ck-button-cancel', 'cancel');\n /**\n\t\t * A collection of views that can be focused in the form.\n\t\t *\n\t\t * @readonly\n\t\t * @protected\n\t\t * @member {module:ui/viewcollection~ViewCollection}\n\t\t */\n this._focusables = new ViewCollection();\n /**\n\t\t * Helps cycling over {@link #_focusables} in the form.\n\t\t *\n\t\t * @readonly\n\t\t * @protected\n\t\t * @member {module:ui/focuscycler~FocusCycler}\n\t\t */\n this._focusCycler = new FocusCycler({\n focusables: this._focusables,\n focusTracker: this.focusTracker,\n keystrokeHandler: this.keystrokes,\n actions: {\n // Navigate form fields backwards using the Shift + Tab keystroke.\n focusPrevious: 'shift + tab',\n // Navigate form fields forwards using the Tab key.\n focusNext: 'tab'\n }\n });\n /**\n\t\t * An array of form validators used by {@link #isValid}.\n\t\t *\n\t\t * @readonly\n\t\t * @protected\n\t\t * @member {Array.}\n\t\t */\n this._validators = validators;\n this.setTemplate({\n tag: 'form',\n attributes: {\n class: [\n 'ck',\n 'ck-media-form'\n ],\n tabindex: '-1'\n },\n children: [\n this.urlInputView,\n this.saveButtonView,\n this.cancelButtonView\n ]\n }); /**\n\t\t * The default info text for the {@link #urlInputView}.\n\t\t *\n\t\t * @private\n\t\t * @member {String} #_urlInputViewInfoDefault\n\t\t */\n /**\n\t\t * The info text with an additional tip for the {@link #urlInputView},\n\t\t * displayed when the input has some value.\n\t\t *\n\t\t * @private\n\t\t * @member {String} #_urlInputViewInfoTip\n\t\t */\n }\n /**\n\t * @inheritDoc\n\t */\n render() {\n super.render();\n submitHandler({ view: this });\n const childViews = [\n this.urlInputView,\n this.saveButtonView,\n this.cancelButtonView\n ];\n childViews.forEach(v => {\n // Register the view as focusable.\n this._focusables.add(v);\n // Register the view in the focus tracker.\n this.focusTracker.add(v.element);\n });\n // Start listening for the keystrokes coming from #element.\n this.keystrokes.listenTo(this.element);\n const stopPropagation = data => data.stopPropagation();\n // Since the form is in the dropdown panel which is a child of the toolbar, the toolbar's\n // keystroke handler would take over the key management in the URL input. We need to prevent\n // this ASAP. Otherwise, the basic caret movement using the arrow keys will be impossible.\n this.keystrokes.set('arrowright', stopPropagation);\n this.keystrokes.set('arrowleft', stopPropagation);\n this.keystrokes.set('arrowup', stopPropagation);\n this.keystrokes.set('arrowdown', stopPropagation);\n // Intercept the \"selectstart\" event, which is blocked by default because of the default behavior\n // of the DropdownView#panelView.\n // TODO: blocking \"selectstart\" in the #panelView should be configurable per–drop–down instance.\n this.listenTo(this.urlInputView.element, 'selectstart', (evt, domEvt) => {\n domEvt.stopPropagation();\n }, { priority: 'high' });\n }\n /**\n\t * Focuses the fist {@link #_focusables} in the form.\n\t */\n focus() {\n this._focusCycler.focusFirst();\n }\n /**\n\t * The native DOM `value` of the {@link #urlInputView} element.\n\t *\n\t * **Note**: Do not confuse it with the {@link module:ui/inputtext/inputtextview~InputTextView#value}\n\t * which works one way only and may not represent the actual state of the component in the DOM.\n\t *\n\t * @type {Number}\n\t */\n get url() {\n return this.urlInputView.inputView.element.value.trim();\n }\n /**\n\t * Sets the native DOM `value` of the {@link #urlInputView} element.\n\t *\n\t * **Note**: Do not confuse it with the {@link module:ui/inputtext/inputtextview~InputTextView#value}\n\t * which works one way only and may not represent the actual state of the component in the DOM.\n\t *\n\t * @param {String} url\n\t */\n set url(url) {\n this.urlInputView.inputView.element.value = url.trim();\n }\n /**\n\t * Validates the form and returns `false` when some fields are invalid.\n\t *\n\t * @returns {Boolean}\n\t */\n isValid() {\n this.resetFormStatus();\n for (const validator of this._validators) {\n const errorText = validator(this);\n // One error per field is enough.\n if (errorText) {\n // Apply updated error.\n this.urlInputView.errorText = errorText;\n return false;\n }\n }\n return true;\n }\n /**\n\t * Cleans up the supplementary error and information text of the {@link #urlInputView}\n\t * bringing them back to the state when the form has been displayed for the first time.\n\t *\n\t * See {@link #isValid}.\n\t */\n resetFormStatus() {\n this.urlInputView.errorText = null;\n this.urlInputView.infoText = this._urlInputViewInfoDefault;\n }\n /**\n\t * Creates a labeled input view.\n\t *\n\t * @private\n\t * @returns {module:ui/labeledinput/labeledinputview~LabeledInputView} Labeled input view instance.\n\t */\n _createUrlInput() {\n const t = this.locale.t;\n const labeledInput = new LabeledInputView(this.locale, InputTextView);\n const inputView = labeledInput.inputView;\n this._urlInputViewInfoDefault = t('br');\n this._urlInputViewInfoTip = t('bs');\n labeledInput.label = t('bt');\n labeledInput.infoText = this._urlInputViewInfoDefault;\n inputView.placeholder = 'https://example.com';\n inputView.on('input', () => {\n // Display the tip text only when there's some value. Otherwise fall back to the default info text.\n labeledInput.infoText = inputView.element.value ? this._urlInputViewInfoTip : this._urlInputViewInfoDefault;\n });\n return labeledInput;\n }\n /**\n\t * Creates a button view.\n\t *\n\t * @private\n\t * @param {String} label The button label.\n\t * @param {String} icon The button icon.\n\t * @param {String} className The additional button CSS class name.\n\t * @param {String} [eventName] An event name that the `ButtonView#execute` event will be delegated to.\n\t * @returns {module:ui/button/buttonview~ButtonView} The button view instance.\n\t */\n _createButton(label, icon, className, eventName) {\n const button = new ButtonView(this.locale);\n button.set({\n label,\n icon,\n tooltip: true\n });\n button.extendTemplate({ attributes: { class: className } });\n if (eventName) {\n button.delegate('execute').to(this, eventName);\n }\n return button;\n }\n} /**\n * Fired when the form view is submitted (when one of the children triggered the submit event),\n * e.g. click on {@link #saveButtonView}.\n *\n * @event submit\n */\n /**\n * Fired when the form view is canceled, e.g. click on {@link #cancelButtonView}.\n *\n * @event cancel\n */","export default \"\"","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n/**\n * @module media-embed/mediaembedui\n */\nimport Plugin from '@ckeditor/ckeditor5-core/src/plugin';\nimport { createDropdown } from '@ckeditor/ckeditor5-ui/src/dropdown/utils';\nimport MediaFormView from './ui/mediaformview';\nimport MediaEmbedEditing from './mediaembedediting';\nimport mediaIcon from '../theme/icons/media.svg';\n/**\n * The media embed UI plugin.\n *\n * @extends module:core/plugin~Plugin\n */\nexport default class MediaEmbedUI extends Plugin {\n /**\n\t * @inheritDoc\n\t */\n static get requires() {\n return [MediaEmbedEditing];\n }\n /**\n\t * @inheritDoc\n\t */\n static get pluginName() {\n return 'MediaEmbedUI';\n }\n /**\n\t * @inheritDoc\n\t */\n init() {\n const editor = this.editor;\n const command = editor.commands.get('mediaEmbed');\n const registry = editor.plugins.get(MediaEmbedEditing).registry;\n /**\n\t\t * The form view displayed inside the drop-down.\n\t\t *\n\t\t * @member {module:media-embed/ui/mediaformview~MediaFormView}\n\t\t */\n this.form = new MediaFormView(getFormValidators(editor.t, registry), editor.locale);\n // Setup `imageUpload` button.\n editor.ui.componentFactory.add('mediaEmbed', locale => {\n const dropdown = createDropdown(locale);\n this._setUpDropdown(dropdown, this.form, command, editor);\n this._setUpForm(this.form, dropdown, command);\n return dropdown;\n });\n }\n _setUpDropdown(dropdown, form, command) {\n const editor = this.editor;\n const t = editor.t;\n const button = dropdown.buttonView;\n dropdown.bind('isEnabled').to(command);\n dropdown.panelView.children.add(form);\n button.set({\n label: t('am'),\n icon: mediaIcon,\n tooltip: true\n });\n // Note: Use the low priority to make sure the following listener starts working after the\n // default action of the drop-down is executed (i.e. the panel showed up). Otherwise, the\n // invisible form/input cannot be focused/selected.\n button.on('open', () => {\n // Make sure that each time the panel shows up, the URL field remains in sync with the value of\n // the command. If the user typed in the input, then canceled (`urlInputView#value` stays\n // unaltered) and re-opened it without changing the value of the media command (e.g. because they\n // didn't change the selection), they would see the old value instead of the actual value of the\n // command.\n form.url = command.value || '';\n form.urlInputView.select();\n form.focus();\n }, { priority: 'low' });\n dropdown.on('submit', () => {\n if (form.isValid()) {\n editor.execute('mediaEmbed', form.url);\n closeUI();\n }\n });\n dropdown.on('change:isOpen', () => form.resetFormStatus());\n dropdown.on('cancel', () => closeUI());\n function closeUI() {\n editor.editing.view.focus();\n dropdown.isOpen = false;\n }\n }\n _setUpForm(form, dropdown, command) {\n form.delegate('submit', 'cancel').to(dropdown);\n form.urlInputView.bind('value').to(command, 'value');\n // Form elements should be read-only when corresponding commands are disabled.\n form.urlInputView.bind('isReadOnly').to(command, 'isEnabled', value => !value);\n form.saveButtonView.bind('isEnabled').to(command);\n }\n}\nfunction getFormValidators(t, registry) {\n return [\n form => {\n if (!form.url.length) {\n return t('an');\n }\n },\n form => {\n if (!registry.hasMedia(form.url)) {\n return t('ao');\n }\n }\n ];\n}","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module paste-from-office/filters/list\n */\n\nimport Element from '@ckeditor/ckeditor5-engine/src/view/element';\nimport Matcher from '@ckeditor/ckeditor5-engine/src/view/matcher';\nimport UpcastWriter from '@ckeditor/ckeditor5-engine/src/view/upcastwriter';\n\n/**\n * Transforms Word specific list-like elements to the semantic HTML lists.\n *\n * Lists in Word are represented by block elements with special attributes like:\n *\n *\t\t

...

// Paragraph based list.\n *\t\t

...

// Heading 1 based list.\n *\n * @param {module:engine/view/documentfragment~DocumentFragment} documentFragment The view structure which to transform.\n * @param {String} stylesString Styles from which list-like elements styling will be extracted.\n */\nexport function transformListItemLikeElementsIntoLists( documentFragment, stylesString ) {\n\tif ( !documentFragment.childCount ) {\n\t\treturn;\n\t}\n\n\tconst writer = new UpcastWriter();\n\tconst itemLikeElements = findAllItemLikeElements( documentFragment, writer );\n\n\tif ( !itemLikeElements.length ) {\n\t\treturn;\n\t}\n\n\tlet currentList = null;\n\n\titemLikeElements.forEach( ( itemLikeElement, i ) => {\n\t\tif ( !currentList || isNewListNeeded( itemLikeElements[ i - 1 ], itemLikeElement ) ) {\n\t\t\tconst listStyle = detectListStyle( itemLikeElement, stylesString );\n\n\t\t\tcurrentList = insertNewEmptyList( listStyle, itemLikeElement.element, writer );\n\t\t}\n\n\t\tconst listItem = transformElementIntoListItem( itemLikeElement.element, writer );\n\n\t\twriter.appendChild( listItem, currentList );\n\t} );\n}\n\n/**\n * Removes paragraph wrapping content inside a list item.\n *\n * @param {module:engine/view/documentfragment~DocumentFragment} documentFragment\n * @param {module:engine/view/upcastwriter~UpcastWriter} writer\n */\nexport function unwrapParagraphInListItem( documentFragment, writer ) {\n\tfor ( const value of writer.createRangeIn( documentFragment ) ) {\n\t\tconst element = value.item;\n\n\t\tif ( element.is( 'li' ) ) {\n\t\t\t// Google Docs allows on single paragraph inside LI.\n\t\t\tconst firstChild = element.getChild( 0 );\n\n\t\t\tif ( firstChild.is( 'p' ) ) {\n\t\t\t\twriter.unwrapElement( firstChild );\n\t\t\t}\n\t\t}\n\t}\n}\n\n// Finds all list-like elements in a given document fragment.\n//\n// @param {module:engine/view/documentfragment~DocumentFragment} documentFragment Document fragment\n// in which to look for list-like nodes.\n// @param {module:engine/view/upcastwriter~UpcastWriter} writer\n// @returns {Array.} Array of found list-like items. Each item is an object containing:\n//\n//\t\t* {module:engine/src/view/element~Element} element List-like element.\n//\t\t* {Number} id List item id parsed from `mso-list` style (see `getListItemData()` function).\n//\t\t* {Number} order List item creation order parsed from `mso-list` style (see `getListItemData()` function).\n//\t\t* {Number} indent List item indentation level parsed from `mso-list` style (see `getListItemData()` function).\nfunction findAllItemLikeElements( documentFragment, writer ) {\n\tconst range = writer.createRangeIn( documentFragment );\n\n\t// Matcher for finding list-like elements.\n\tconst itemLikeElementsMatcher = new Matcher( {\n\t\tname: /^p|h\\d+$/,\n\t\tstyles: {\n\t\t\t'mso-list': /.*/\n\t\t}\n\t} );\n\n\tconst itemLikeElements = [];\n\n\tfor ( const value of range ) {\n\t\tif ( value.type === 'elementStart' && itemLikeElementsMatcher.match( value.item ) ) {\n\t\t\tconst itemData = getListItemData( value.item );\n\n\t\t\titemLikeElements.push( {\n\t\t\t\telement: value.item,\n\t\t\t\tid: itemData.id,\n\t\t\t\torder: itemData.order,\n\t\t\t\tindent: itemData.indent\n\t\t\t} );\n\t\t}\n\t}\n\n\treturn itemLikeElements;\n}\n\n// Extracts list item style from the provided CSS.\n//\n// List item style is extracted from CSS stylesheet. Each list with its specific style attribute\n// value (`mso-list:l1 level1 lfo1`) has its dedicated properties in a CSS stylesheet defined with a selector like:\n//\n// \t\t@list l1:level1 { ... }\n//\n// It contains `mso-level-number-format` property which defines list numbering/bullet style. If this property\n// is not defined it means default `decimal` numbering.\n//\n// Here CSS string representation is used as `mso-level-number-format` property is an invalid CSS property\n// and will be removed during CSS parsing.\n//\n// @param {Object} listLikeItem List-like item for which list style will be searched for. Usually\n// a result of `findAllItemLikeElements()` function.\n// @param {String} stylesString CSS stylesheet.\n// @returns {Object} result\n// @returns {String} result.type List type, could be `ul` or `ol`.\n// @returns {String} result.style List style, for example: `decimal`, `lower-roman`, etc. It is extracted\n// directly from Word stylesheet without further processing and may be not compatible\n// with CSS `list-style-type` property accepted values.\nfunction detectListStyle( listLikeItem, stylesString ) {\n\tconst listStyleRegexp = new RegExp( `@list l${ listLikeItem.id }:level${ listLikeItem.indent }\\\\s*({[^}]*)`, 'gi' );\n\tconst listStyleTypeRegex = /mso-level-number-format:([^;]*);/gi;\n\n\tconst listStyleMatch = listStyleRegexp.exec( stylesString );\n\n\tlet listStyleType = 'decimal'; // Decimal is default one.\n\tif ( listStyleMatch && listStyleMatch[ 1 ] ) {\n\t\tconst listStyleTypeMatch = listStyleTypeRegex.exec( listStyleMatch[ 1 ] );\n\n\t\tif ( listStyleTypeMatch && listStyleTypeMatch[ 1 ] ) {\n\t\t\tlistStyleType = listStyleTypeMatch[ 1 ].trim();\n\t\t}\n\t}\n\n\treturn {\n\t\ttype: listStyleType !== 'bullet' && listStyleType !== 'image' ? 'ol' : 'ul',\n\t\tstyle: listStyleType\n\t};\n}\n\n// Creates empty list of a given type and inserts it after a specified element.\n//\n// @param {Object} listStyle List style object which determines the type of newly created list.\n// Usually a result of `detectListStyle()` function.\n// @param {module:engine/view/element~Element} element Element before which list is inserted.\n// @param {module:engine/view/upcastwriter~UpcastWriter} writer\n// @returns {module:engine/view/element~Element} Newly created list element.\nfunction insertNewEmptyList( listStyle, element, writer ) {\n\tconst list = new Element( listStyle.type );\n\tconst position = element.parent.getChildIndex( element );\n\n\twriter.insertChild( position, list, element.parent );\n\n\treturn list;\n}\n\n// Transforms given element into a semantic list item. As the function operates on a provided\n// {module:engine/src/view/element~Element element} it will modify the view structure to which this element belongs.\n//\n// @param {module:engine/view/element~Element} element Element which will be transformed into list item.\n// @param {module:engine/view/upcastwriter~UpcastWriter} writer\n// @returns {module:engine/view/element~Element} New element to which the given one was transformed. It is\n// inserted in place of the old element (the reference to the old element is lost due to renaming).\nfunction transformElementIntoListItem( element, writer ) {\n\tremoveBulletElement( element, writer );\n\n\treturn writer.rename( 'li', element );\n}\n\n// Extracts list item information from Word specific list-like element style:\n//\n//\t\t`style=\"mso-list:l1 level1 lfo1\"`\n//\n// where:\n//\n//\t\t* `l1` is a list id (however it does not mean this is a continuous list - see #43),\n//\t\t* `level1` is a list item indentation level,\n//\t\t* `lfo1` is a list insertion order in a document.\n//\n// @param {module:engine/view/element~Element} element Element from which style data is extracted.\n// @returns {Object} result\n// @returns {Number} result.id Parent list id.\n// @returns {Number} result.order List item creation order.\n// @returns {Number} result.indent List item indentation level.\nfunction getListItemData( element ) {\n\tconst data = {};\n\tconst listStyle = element.getStyle( 'mso-list' );\n\n\tif ( listStyle ) {\n\t\tdata.id = parseInt( listStyle.match( /(^|\\s+)l(\\d+)/i )[ 2 ] );\n\t\tdata.order = parseInt( listStyle.match( /\\s*lfo(\\d+)/i )[ 1 ] );\n\t\tdata.indent = parseInt( listStyle.match( /\\s*level(\\d+)/i )[ 1 ] );\n\t}\n\n\treturn data;\n}\n\n// Removes span with a numbering/bullet from a given element.\n//\n// @param {module:engine/view/element~Element} element\n// @param {module:engine/view/upcastwriter~UpcastWriter} writer\nfunction removeBulletElement( element, writer ) {\n\t// Matcher for finding `span` elements holding lists numbering/bullets.\n\tconst bulletMatcher = new Matcher( {\n\t\tname: 'span',\n\t\tstyles: {\n\t\t\t'mso-list': 'Ignore'\n\t\t}\n\t} );\n\n\tconst range = writer.createRangeIn( element );\n\n\tfor ( const value of range ) {\n\t\tif ( value.type === 'elementStart' && bulletMatcher.match( value.item ) ) {\n\t\t\twriter.remove( value.item );\n\t\t}\n\t}\n}\n\n// Whether previous and current item belongs to the same list. It is determined based on `item.id`\n// (extracted from `mso-list` style, see #getListItemData) and previous sibling of the current item.\n//\n// @param {Object} previousItem\n// @param {Object} currentItem\n// @returns {Boolean}\nfunction isNewListNeeded( previousItem, currentItem ) {\n\tif ( previousItem.id !== currentItem.id ) {\n\t\treturn true;\n\t}\n\n\tconst previousSibling = currentItem.element.previousSibling;\n\n\tif ( !previousSibling ) {\n\t\treturn true;\n\t}\n\n\t// Even with the same id the list does not have to be continuous (#43).\n\treturn !isList( previousSibling );\n}\n\nfunction isList( element ) {\n\treturn element.is( 'ol' ) || element.is( 'ul' );\n}\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module paste-from-office/normalizers/googledocsnormalizer\n */\n\nimport removeBoldWrapper from '../filters/removeboldwrapper';\nimport { unwrapParagraphInListItem } from '../filters/list';\nimport UpcastWriter from '@ckeditor/ckeditor5-engine/src/view/upcastwriter';\n\nconst googleDocsMatch = /id=(\"|')docs-internal-guid-[-0-9a-f]+(\"|')/i;\n\n/**\n * Normalizer for the content pasted from Google Docs.\n *\n * @implements module:paste-from-office/normalizer~Normalizer\n */\nexport default class GoogleDocsNormalizer {\n\t/**\n\t * @inheritDoc\n\t */\n\tisActive( htmlString ) {\n\t\treturn googleDocsMatch.test( htmlString );\n\t}\n\n\t/**\n\t * @inheritDoc\n\t */\n\texecute( data ) {\n\t\tconst writer = new UpcastWriter();\n\n\t\tremoveBoldWrapper( data.content, writer );\n\t\tunwrapParagraphInListItem( data.content, writer );\n\t}\n}\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module paste-from-office/filters/removeboldwrapper\n */\n\n/**\n * Removes `` tag wrapper added by Google Docs to a copied content.\n *\n * @param {module:engine/view/documentfragment~DocumentFragment} documentFragment element `data.content` obtained from clipboard\n * @param {module:engine/view/upcastwriter~UpcastWriter} writer\n */\nexport default function removeBoldWrapper( documentFragment, writer ) {\n\tfor ( const child of documentFragment.getChildren() ) {\n\t\tif ( child.is( 'b' ) && child.getStyle( 'font-weight' ) === 'normal' ) {\n\t\t\tconst childIndex = documentFragment.getChildIndex( child );\n\n\t\t\twriter.remove( child );\n\t\t\twriter.insertChild( childIndex, child.getChildren(), documentFragment );\n\t\t}\n\t}\n}\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module paste-from-office/filters/space\n */\n\n/**\n * Replaces last space preceding elements closing tag with ` `. Such operation prevents spaces from being removed\n * during further DOM/View processing (see especially {@link module:engine/view/domconverter~DomConverter#_processDataFromDomText}).\n * This method also takes into account Word specific `` empty tags.\n * Additionally multiline sequences of spaces and new lines between tags are removed (see #39 and #40).\n *\n * @param {String} htmlString HTML string in which spacing should be normalized.\n * @returns {String} Input HTML with spaces normalized.\n */\nexport function normalizeSpacing( htmlString ) {\n\t// Run normalizeSafariSpaceSpans() two times to cover nested spans.\n\treturn normalizeSafariSpaceSpans( normalizeSafariSpaceSpans( htmlString ) )\n\t\t// Remove all \\r\\n from \"spacerun spans\" so the last replace line doesn't strip all whitespaces.\n\t\t.replace( /([\\s]*?)[\\r\\n]+(\\s*<\\/span>)/g, '$1$2' )\n\t\t.replace( /<\\/span>/g, '' )\n\t\t.replace( / <\\//g, '\\u00A0<\\/o:p>/g, '\\u00A0' )\n\t\t// Remove block filler from empty paragraph. Safari uses \\u00A0 instead of  .\n\t\t.replace( /( |\\u00A0)<\\/o:p>/g, '' )\n\t\t// Remove all whitespaces when they contain any \\r or \\n.\n\t\t.replace( />(\\s*[\\r\\n]\\s*)<' );\n}\n\n/**\n * Normalizes spacing in special Word `spacerun spans` (`\\s+`) by replacing\n * all spaces with `  ` pairs. This prevents spaces from being removed during further DOM/View processing\n * (see especially {@link module:engine/view/domconverter~DomConverter#_processDataFromDomText}).\n *\n * @param {Document} htmlDocument Native `Document` object in which spacing should be normalized.\n */\nexport function normalizeSpacerunSpans( htmlDocument ) {\n\thtmlDocument.querySelectorAll( 'span[style*=spacerun]' ).forEach( el => {\n\t\t// Use `el.childNodes[ 0 ].data.length` instead of `el.innerText.length`. For `el.innerText.length` which\n\t\t// contains spaces mixed with ` ` Edge browser returns incorrect length.\n\t\tconst innerTextLength = el.childNodes[ 0 ].data.length;\n\n\t\tel.innerHTML = Array( innerTextLength + 1 ).join( '\\u00A0 ' ).substr( 0, innerTextLength );\n\t} );\n}\n\n// Normalizes specific spacing generated by Safari when content pasted from Word (` `)\n// by replacing all spaces sequences longer than 1 space with `  ` pairs. This prevents spaces from being removed during\n// further DOM/View processing (see especially {@link module:engine/view/domconverter~DomConverter#_processDataFromDomText}).\n//\n// This function is similar to {@link module:clipboard/utils/normalizeclipboarddata normalizeClipboardData util} but uses\n// regular spaces /   sequence for replacement.\n//\n// @param {String} htmlString HTML string in which spacing should be normalized\n// @returns {String} Input HTML with spaces normalized.\nfunction normalizeSafariSpaceSpans( htmlString ) {\n\treturn htmlString.replace( /(\\s+)<\\/span>/g, ( fullMatch, spaces ) => {\n\t\treturn spaces.length === 1 ? ' ' : Array( spaces.length + 1 ).join( '\\u00A0 ' ).substr( 0, spaces.length );\n\t} );\n}\n","/**\n * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module paste-from-office/filters/parse\n */\n\n/* globals DOMParser */\n\nimport DomConverter from '@ckeditor/ckeditor5-engine/src/view/domconverter';\n\nimport { normalizeSpacing, normalizeSpacerunSpans } from './space';\n\n/**\n * Parses provided HTML extracting contents of `` and `