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- /**
- * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.
- * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
- */
- /**
- * @module undo/undoui
- */
- import Plugin from '@ckeditor/ckeditor5-core/src/plugin';
- import ButtonView from '@ckeditor/ckeditor5-ui/src/button/buttonview';
- import undoIcon from '../theme/icons/undo.svg';
- import redoIcon from '../theme/icons/redo.svg';
- /**
- * The undo UI feature. It introduces the `'undo'` and `'redo'` buttons to the editor.
- *
- * @extends module:core/plugin~Plugin
- */
- export default class UndoUI extends Plugin {
- /**
- * @inheritDoc
- */
- init() {
- const editor = this.editor;
- const locale = editor.locale;
- const t = editor.t;
- const localizedUndoIcon = locale.uiLanguageDirection == 'ltr' ? undoIcon : redoIcon;
- const localizedRedoIcon = locale.uiLanguageDirection == 'ltr' ? redoIcon : undoIcon;
- this._addButton( 'undo', t( 'Undo' ), 'CTRL+Z', localizedUndoIcon );
- this._addButton( 'redo', t( 'Redo' ), 'CTRL+Y', localizedRedoIcon );
- }
- /**
- * Creates a button for the specified command.
- *
- * @private
- * @param {String} name Command name.
- * @param {String} label Button label.
- * @param {String} keystroke Command keystroke.
- * @param {String} Icon Source of the icon.
- */
- _addButton( name, label, keystroke, Icon ) {
- const editor = this.editor;
- editor.ui.componentFactory.add( name, locale => {
- const command = editor.commands.get( name );
- const view = new ButtonView( locale );
- view.set( {
- label,
- icon: Icon,
- keystroke,
- tooltip: true
- } );
- view.bind( 'isEnabled' ).to( command, 'isEnabled' );
- this.listenTo( view, 'execute', () => editor.execute( name ) );
- return view;
- } );
- }
- }
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