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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 paragraph/paragraphcommand
- */
- import Command from '@ckeditor/ckeditor5-core/src/command';
- import first from '@ckeditor/ckeditor5-utils/src/first';
- /**
- * The paragraph command.
- *
- * @extends module:core/command~Command
- */
- export default class ParagraphCommand extends Command {
- /**
- * The value of the command. Indicates whether the selection start is placed in a paragraph.
- *
- * @readonly
- * @observable
- * @member {Boolean} #value
- */
- /**
- * @inheritDoc
- */
- refresh() {
- const model = this.editor.model;
- const document = model.document;
- const block = first( document.selection.getSelectedBlocks() );
- this.value = !!block && block.is( 'paragraph' );
- this.isEnabled = !!block && checkCanBecomeParagraph( block, model.schema );
- }
- /**
- * Executes the command. All the blocks (see {@link module:engine/model/schema~Schema}) in the selection
- * will be turned to paragraphs.
- *
- * @fires execute
- * @param {Object} [options] Options for the executed command.
- * @param {module:engine/model/selection~Selection|module:engine/model/documentselection~DocumentSelection} [options.selection]
- * The selection that the command should be applied to.
- * By default, if not provided, the command is applied to the {@link module:engine/model/document~Document#selection}.
- */
- execute( options = {} ) {
- const model = this.editor.model;
- const document = model.document;
- model.change( writer => {
- const blocks = ( options.selection || document.selection ).getSelectedBlocks();
- for ( const block of blocks ) {
- if ( !block.is( 'paragraph' ) && checkCanBecomeParagraph( block, model.schema ) ) {
- writer.rename( block, 'paragraph' );
- }
- }
- } );
- }
- }
- // Checks whether the given block can be replaced by a paragraph.
- //
- // @private
- // @param {module:engine/model/element~Element} block A block to be tested.
- // @param {module:engine/model/schema~Schema} schema The schema of the document.
- // @returns {Boolean}
- function checkCanBecomeParagraph( block, schema ) {
- return schema.checkChild( block.parent, 'paragraph' ) && !schema.isObject( block );
- }
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