text: /**
   * @license Copyright (c) 2003-2022, CKSource - Holding sp. z o.o. All rights reserved.
   * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
   */
  
  /* global console, window */
  
  import global from '@ckeditor/ckeditor5-utils/src/dom/global';
  
  import ClassicEditor from '@ckeditor/ckeditor5-editor-classic/src/classiceditor';
  import Mention from '../../src/mention';
  import Underline from '@ckeditor/ckeditor5-basic-styles/src/underline';
  import ArticlePluginSet from '@ckeditor/ckeditor5-core/tests/_utils/articlepluginset';
  import Font from '@ckeditor/ckeditor5-font/src/font';
  import Plugin from '@ckeditor/ckeditor5-core/src/plugin';
  
  import { toWidget, viewToModelPositionOutsideModelElement } from '@ckeditor/ckeditor5-widget/src/utils';
  import ButtonView from '@ckeditor/ckeditor5-ui/src/button/buttonview';
  
  class InlineWidget extends Plugin {
  	constructor( editor ) {
  		super( editor );
  
  		editor.model.schema.register( 'placeholder', {
  			allowWhere: '$text',
  			isObject: true,
  			isInline: true,
  			allowAttributes: [ 'type' ]
  		} );
  
  		editor.conversion.for( 'editingDowncast' ).elementToElement( {
  			model: 'placeholder',
  			view: ( modelItem, conversionApi ) => {
  				const widgetElement = createPlaceholderView( modelItem, conversionApi );
  
  				return toWidget( widgetElement, conversionApi.writer );
  			}
  		} );
  
  		editor.conversion.for( 'dataDowncast' ).elementToElement( {
  			model: 'placeholder',
  			view: createPlaceholderView
  		} );
  
  		editor.conversion.for( 'upcast' ).elementToElement( {
  			view: 'placeholder',
  			model: ( viewElement, { writer } ) => {
  				let type = 'general';
  
  				if ( viewElement.childCount ) {
  					const text = viewElement.getChild( 0 );
  
  					if ( text.is( '$text' ) ) {
  						type = text.data.slice( 1, -1 );
  					}
  				}
  
  				return writer.createElement( 'placeholder', { type } );
  			}
  		} );
  
  		editor.editing.mapper.on(
  			'viewToModelPosition',
  			viewToModelPositionOutsideModelElement( editor.model, viewElement => viewElement.name == 'placeholder' )
  		);
  
  		this._createToolbarButton();
  
  		function createPlaceholderView( modelItem, { writer } ) {
  			const widgetElement = writer.createContainerElement( 'placeholder' );
  			const viewText = writer.createText( '{' + modelItem.getAttribute( 'type' ) + '}' );
  
  			writer.insert( writer.createPositionAt( widgetElement, 0 ), viewText );
  
  			return widgetElement;
  		}
  	}
  
  	_createToolbarButton() {
  		const editor = this.editor;
  		const t = editor.t;
  
  		editor.ui.componentFactory.add( 'placeholder', locale => {
  			const buttonView = new ButtonView( locale );
  
  			buttonView.set( {
  				label: t( 'Insert placeholder' ),
  				tooltip: true,
  				withText: true
  			} );
  
  			this.listenTo( buttonView, 'execute', () => {
  				const model = editor.model;
  
  				model.change( writer => {
  					const placeholder = writer.createElement( 'placeholder', { type: 'placeholder' } );
  
  					model.insertContent( placeholder );
  
  					writer.setSelection( placeholder, 'on' );
  				} );
  			} );
  
  			return buttonView;
  		} );
  	}
  }
  
  class MentionCommandSwitcher extends Plugin {
  	init() {
  		const editor = this.editor;
  		const mentionCommand = editor.commands.get( 'mention' );
  
  		editor.ui.componentFactory.add( 'toggleMentionCommand', locale => {
  			const view = new ButtonView( locale );
  
  			view.set( {
  				label: 'Mentions',
  				withText: true,
  				isToggleable: true
  			} );
  
  			view.bind( 'isOn' ).to( mentionCommand, 'isEnabled' );
  
  			this.listenTo( view, 'execute', () => {
  				if ( mentionCommand.isEnabled ) {
  					mentionCommand.forceDisabled( 'mentionCommandSwitcher' );
  				} else {
  					mentionCommand.clearForceDisabled( 'mentionCommandSwitcher' );
  				}
  			} );
  
  			return view;
  		} );
  	}
  }
  
  ClassicEditor
  	.create( global.document.querySelector( '#editor' ), {
  		plugins: [ ArticlePluginSet, Underline, Font, Mention, InlineWidget, MentionCommandSwitcher ],
  		toolbar: [
  			'heading',
  			'|', 'bulletedList', 'numberedList', 'blockQuote',
  			'|', 'bold', 'italic', 'underline', 'link',
  			'|', 'fontFamily', 'fontSize', 'fontColor', 'fontBackgroundColor',
  			'|', 'insertTable', 'placeholder', 'toggleMentionCommand',
  			'|', 'undo', 'redo'
  		],
  		image: {
  			toolbar: [ 'imageStyle:inline', 'imageStyle:block', 'imageStyle:side', '|', 'imageTextAlternative' ]
  		},
  		table: {
  			contentToolbar: [ 'tableColumn', 'tableRow', 'mergeTableCells' ],
  			tableToolbar: [ 'bold', 'italic' ]
  		},
  		mention: {
  			feeds: [
  				{
  					marker: '@',
  					feed: [ '@Barney Stinson', '@Lily Aldrin', '@Marshall Eriksen', '@Robin Sherbatsky', '@Ted Mosby' ]
  				},
  				{
  					marker: '#',
  					feed: [
  						'#a01', '#a02', '#a03', '#a04', '#a05', '#a06', '#a07', '#a08', '#a09', '#a10',
  						'#a11', '#a12', '#a13', '#a14', '#a15', '#a16', '#a17', '#a18', '#a19', '#a20'
  					]
  				},
  				{
  					marker: ':',
  					feed: [
  						':+1:', ':-1:', ':@(at-sign):', ':$(dollar-sign):', ':#(hash-sign):'
  					]
  				}
  			]
  		}
  	} )
  	.then( editor => {
  		window.editor = editor;
  	} )
  	.catch( err => {
  		console.error( err.stack );
  	} );
  