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refactor: decouple editor logic from angular
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,160 @@ | ||
| import { Schema, Node as ProsemirrorNode } from 'prosemirror-model'; | ||
| import { EditorState, Plugin, Transaction } from 'prosemirror-state'; | ||
| import { Decoration, EditorView, NodeView } from 'prosemirror-view'; | ||
| import { Subject } from 'rxjs'; | ||
|
|
||
| import { | ||
| editable as editablePlugin, | ||
| placeholder as placeholderPlugin | ||
| } from 'ngx-editor/plugins'; | ||
|
|
||
| import defautlSchema from './schema'; | ||
| import { parseContent } from './parsers'; | ||
| import isNil from './utils/isNil'; | ||
|
|
||
| type Content = string | Record<string, any> | null; | ||
| type JSONDoc = Record<string, null> | null; | ||
|
|
||
| interface NodeViews { | ||
| [name: string]: ( | ||
| node: ProsemirrorNode, | ||
| view: EditorView, | ||
| getPos: () => number, | ||
| decorations: Decoration[] | ||
| ) => NodeView; | ||
| } | ||
|
|
||
| interface Options { | ||
| content?: Content; | ||
| enabled?: boolean; | ||
| placeholder?: string; | ||
| schema?: Schema; | ||
| plugins?: Plugin[]; | ||
| nodeViews?: NodeViews; | ||
| } | ||
|
|
||
| class Editor { | ||
| view: EditorView; | ||
| options: Options; | ||
| el: DocumentFragment; | ||
|
|
||
| onContentChange = new Subject<JSONDoc>(); | ||
| onFocus = new Subject<void>(); | ||
| onBlur = new Subject<void>(); | ||
| onUpdate = new Subject(); | ||
|
|
||
| constructor(options: Options) { | ||
| this.options = options; | ||
| this.createEditor(options); | ||
| } | ||
|
|
||
| get schema(): Schema { | ||
| return this.options.schema || defautlSchema; | ||
| } | ||
|
|
||
| setContent(content: Content): void { | ||
| if (isNil(content)) { | ||
| return; | ||
| } | ||
|
|
||
| const { state } = this.view; | ||
| const { tr, doc } = state; | ||
|
|
||
| const newDoc = parseContent(content, this.schema); | ||
|
|
||
| tr.replaceWith(0, state.doc.content.size, newDoc); | ||
|
|
||
| // don't emit if both content is same | ||
| if (doc.eq(tr.doc)) { | ||
| return; | ||
| } | ||
|
|
||
| if (!tr.docChanged) { | ||
| return; | ||
| } | ||
|
|
||
| this.view.dispatch(tr); | ||
| } | ||
|
|
||
| private handleTransactions(tr: Transaction): void { | ||
| const { state } = this.view.state.applyTransaction(tr); | ||
| this.view.updateState(state); | ||
|
|
||
| this.onUpdate.next(); | ||
|
|
||
| if (!tr.docChanged) { | ||
| return; | ||
| } | ||
|
|
||
| const json = state.doc.toJSON(); | ||
| this.onContentChange.next(json); | ||
| } | ||
|
|
||
| private createEditor(options: Options): void { | ||
| const { content, plugins, nodeViews, enabled } = options; | ||
| const schema = this.schema; | ||
|
|
||
| const editable = enabled ?? true; | ||
| const placeholder = options.placeholder ?? ''; | ||
|
|
||
| const doc = parseContent(content, schema); | ||
| this.el = document.createDocumentFragment(); | ||
|
|
||
| this.view = new EditorView(this.el, { | ||
| editable: () => editable, | ||
| state: EditorState.create({ | ||
| doc, | ||
| schema, | ||
| plugins: [ | ||
| editablePlugin(), | ||
| placeholderPlugin(placeholder), | ||
| ...plugins | ||
| ], | ||
| }), | ||
| nodeViews, | ||
| dispatchTransaction: this.handleTransactions.bind(this), | ||
| handleDOMEvents: { | ||
| focus: () => { | ||
| this.onFocus.next(); | ||
| return false; | ||
| }, | ||
| blur: () => { | ||
| this.onBlur.next(); | ||
| return false; | ||
| } | ||
| }, | ||
| attributes: { | ||
| class: 'NgxEditor__Content' | ||
| }, | ||
| }); | ||
| } | ||
|
|
||
| registerPlugin(plugin: Plugin): void { | ||
| const { state } = this.view; | ||
| const plugins = [...state.plugins, plugin]; | ||
|
|
||
| const newState = state.reconfigure({ plugins }); | ||
| this.view.updateState(newState); | ||
| } | ||
|
|
||
| enable(): void { | ||
| const { dispatch, state: { tr } } = this.view; | ||
| dispatch(tr.setMeta('UPDATE_EDITABLE', true)); | ||
| } | ||
|
|
||
| disable(): void { | ||
| const { dispatch, state: { tr } } = this.view; | ||
| dispatch(tr.setMeta('UPDATE_EDITABLE', false)); | ||
| } | ||
|
|
||
| setPlaceholder(placeholder: string): void { | ||
| const { dispatch, state: { tr } } = this.view; | ||
| dispatch(tr.setMeta('UPDATE_PLACEHOLDER', placeholder)); | ||
| } | ||
|
|
||
| destroy(): void { | ||
| this.view.destroy(); | ||
| } | ||
| } | ||
|
|
||
| export default Editor; |
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