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- /**
- * @license Copyright (c) 2003-2020, CKSource - Frederico Knabben. All rights reserved.
- * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
- */
- /**
- * @module list/liststylecommand
- */
- import Command from '@ckeditor/ckeditor5-core/src/command';
- import { getSiblingNodes } from './utils';
- /**
- * The list style command. It is used by the {@link module:list/liststyle~ListStyle list style feature}.
- *
- * @extends module:core/command~Command
- */
- export default class ListStyleCommand extends Command {
- /**
- * Creates an instance of the command.
- *
- * @param {module:core/editor/editor~Editor} editor The editor instance.
- * @param {String} defaultType The list type that will be used by default if the value was not specified during
- * the command execution.
- */
- constructor( editor, defaultType ) {
- super( editor );
- /**
- * The default type of the list style.
- *
- * @protected
- * @member {String}
- */
- this._defaultType = defaultType;
- }
- /**
- * @inheritDoc
- */
- refresh() {
- this.value = this._getValue();
- this.isEnabled = this._checkEnabled();
- }
- /**
- * Executes the command.
- *
- * @param {Object} options
- * @param {String|null} options.type The type of the list style, e.g. `'disc'` or `'square'`. If `null` is specified, the default
- * style will be applied.
- * @protected
- */
- execute( options = {} ) {
- const model = this.editor.model;
- const document = model.document;
- // For all selected blocks find all list items that are being selected
- // and update the `listStyle` attribute in those lists.
- let listItems = [ ...document.selection.getSelectedBlocks() ]
- .filter( element => element.is( 'element', 'listItem' ) )
- .map( element => {
- const position = model.change( writer => writer.createPositionAt( element, 0 ) );
- return [
- ...getSiblingNodes( position, 'backward' ),
- ...getSiblingNodes( position, 'forward' )
- ];
- } )
- .flat();
- // Since `getSelectedBlocks()` can return items that belong to the same list, and
- // `getSiblingNodes()` returns the entire list, we need to remove duplicated items.
- listItems = [ ...new Set( listItems ) ];
- if ( !listItems.length ) {
- return;
- }
- model.change( writer => {
- for ( const item of listItems ) {
- writer.setAttribute( 'listStyle', options.type || this._defaultType, item );
- }
- } );
- }
- /**
- * Checks the command's {@link #value}.
- *
- * @private
- * @returns {String|null} The current value.
- */
- _getValue() {
- const listItem = this.editor.model.document.selection.getFirstPosition().parent;
- if ( listItem && listItem.is( 'element', 'listItem' ) ) {
- return listItem.getAttribute( 'listStyle' );
- }
- return null;
- }
- /**
- * Checks whether the command can be enabled in the current context.
- *
- * @private
- * @returns {Boolean} Whether the command should be enabled.
- */
- _checkEnabled() {
- const editor = this.editor;
- const numberedList = editor.commands.get( 'numberedList' );
- const bulletedList = editor.commands.get( 'bulletedList' );
- return numberedList.isEnabled || bulletedList.isEnabled;
- }
- }
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