Internal: Restored locale support for BodyCollection to work correctly.

src/viewcollection.js

@@ -9,6 +9,7 @@
 
 import CKEditorError from '@ckeditor/ckeditor5-utils/src/ckeditorerror';
 import Collection from '@ckeditor/ckeditor5-utils/src/collection';
+import Locale from '@ckeditor/ckeditor5-utils/src/locale';
 
 /**
  * Collects {@link module:ui/view~View} instances.
@@ -53,8 +54,11 @@ export default class ViewCollection extends Collection {
 	 *
 	 * @param {Array.<module:ui/view~View>} [initialItems] The initial items of the collection.
 	 */
-	constructor( initialItems = [] ) {
-		super( initialItems, {
+	constructor( itemsOrLocale = [] ) {
+		const locale = itemsOrLocale instanceof Locale ? itemsOrLocale : new Locale();
+		const items = itemsOrLocale instanceof Locale ? [] : itemsOrLocale;
+
+		super( items, {
 			// An #id Number attribute should be legal and not break the `ViewCollection` instance.
 			// https://github.com/ckeditor/ckeditor5-ui/issues/93
 			idProperty: 'viewUid'
@@ -72,6 +76,14 @@ export default class ViewCollection extends Collection {
 			}
 		} );
 
+		/**
+		 * The {@link module:core/editor/editor~Editor#locale editor's locale} instance.
+		 * See the view {@link module:ui/view~View#locale locale} property.
+		 *
+		 * @member {module:utils/locale~Locale}
+		 */
+		this.locale = locale;
+
 		/**
 		 * A parent element within which child views are rendered and managed in DOM.
 		 *

tests/view.js

@@ -13,6 +13,7 @@ import Collection from '@ckeditor/ckeditor5-utils/src/collection';
 import ViewCollection from '../src/viewcollection';
 import normalizeHtml from '@ckeditor/ckeditor5-utils/tests/_utils/normalizehtml';
 import { assertCKEditorError } from '@ckeditor/ckeditor5-utils/tests/_utils/utils';
+import Locale from '@ckeditor/ckeditor5-utils/src/locale';
 
 let TestView, view, childA, childB;
 
@@ -63,7 +64,7 @@ describe( 'View', () => {
 				const collection = new ViewCollection();
 
 				expect( view.locale ).to.equal( locale );
-				expect( collection.locale ).to.be.undefined;
+				expect( collection.locale ).to.be.an.instanceOf( Locale );
 
 				view._viewCollections.add( collection );
 				expect( collection.locale ).to.equal( view.locale );