text: /**
   * @license Copyright (c) 2003-2021, CKSource - Frederico Knabben. All rights reserved.
   * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
   */
  
  /**
   * @module table/tableediting
   */
  
  import { Plugin } from 'ckeditor5/src/core';
  
  import upcastTable, { ensureParagraphInTableCell, skipEmptyTableRow } from './converters/upcasttable';
  import {
  	convertParagraphInTableCell,
  	downcastInsertCell,
  	downcastInsertRow,
  	downcastInsertTable,
  	downcastRemoveRow,
  	downcastTableHeadingColumnsChange
  } from './converters/downcast';
  
  import InsertTableCommand from './commands/inserttablecommand';
  import InsertRowCommand from './commands/insertrowcommand';
  import InsertColumnCommand from './commands/insertcolumncommand';
  import SplitCellCommand from './commands/splitcellcommand';
  import MergeCellCommand from './commands/mergecellcommand';
  import RemoveRowCommand from './commands/removerowcommand';
  import RemoveColumnCommand from './commands/removecolumncommand';
  import SetHeaderRowCommand from './commands/setheaderrowcommand';
  import SetHeaderColumnCommand from './commands/setheadercolumncommand';
  import MergeCellsCommand from './commands/mergecellscommand';
  import SelectRowCommand from './commands/selectrowcommand';
  import SelectColumnCommand from './commands/selectcolumncommand';
  import TableUtils from '../src/tableutils';
  
  import injectTableLayoutPostFixer from './converters/table-layout-post-fixer';
  import injectTableCellParagraphPostFixer from './converters/table-cell-paragraph-post-fixer';
  import injectTableCellRefreshPostFixer from './converters/table-cell-refresh-post-fixer';
  import injectTableHeadingRowsRefreshPostFixer from './converters/table-heading-rows-refresh-post-fixer';
  
  import '../theme/tableediting.css';
  
  /**
   * The table editing feature.
   *
   * @extends module:core/plugin~Plugin
   */
  export default class TableEditing extends Plugin {
  	/**
  	 * @inheritDoc
  	 */
  	static get pluginName() {
  		return 'TableEditing';
  	}
  
  	/**
  	 * @inheritDoc
  	 */
  	init() {
  		const editor = this.editor;
  		const model = editor.model;
  		const schema = model.schema;
  		const conversion = editor.conversion;
  
  		schema.register( 'table', {
  			allowWhere: '$block',
  			allowAttributes: [ 'headingRows', 'headingColumns' ],
  			isObject: true,
  			isBlock: true
  		} );
  
  		schema.register( 'tableRow', {
  			allowIn: 'table',
  			isLimit: true
  		} );
  
  		schema.register( 'tableCell', {
  			allowIn: 'tableRow',
  			allowAttributes: [ 'colspan', 'rowspan' ],
  			isLimit: true,
  			isSelectable: true
  		} );
  
  		// Allow all $block content inside a table cell.
  		schema.extend( '$block', { allowIn: 'tableCell' } );
  
  		// Table conversion.
  		conversion.for( 'upcast' ).add( upcastTable() );
  
  		conversion.for( 'editingDowncast' ).add( downcastInsertTable( { asWidget: true } ) );
  		conversion.for( 'dataDowncast' ).add( downcastInsertTable() );
  
  		// Table row conversion.
  		conversion.for( 'upcast' ).elementToElement( { model: 'tableRow', view: 'tr' } );
  		conversion.for( 'upcast' ).add( skipEmptyTableRow() );
  
  		conversion.for( 'editingDowncast' ).add( downcastInsertRow() );
  		conversion.for( 'editingDowncast' ).add( downcastRemoveRow() );
  
  		// Table cell conversion.
  		conversion.for( 'upcast' ).elementToElement( { model: 'tableCell', view: 'td' } );
  		conversion.for( 'upcast' ).elementToElement( { model: 'tableCell', view: 'th' } );
  		conversion.for( 'upcast' ).add( ensureParagraphInTableCell( 'td' ) );
  		conversion.for( 'upcast' ).add( ensureParagraphInTableCell( 'th' ) );
  
  		conversion.for( 'editingDowncast' ).add( downcastInsertCell() );
  
  		// Duplicates code - needed to properly refresh paragraph inside a table cell.
  		editor.conversion.for( 'editingDowncast' ).elementToElement( {
  			model: 'paragraph',
  			view: convertParagraphInTableCell,
  			converterPriority: 'high'
  		} );
  
  		// Table attributes conversion.
  		conversion.attributeToAttribute( { model: 'colspan', view: 'colspan' } );
  		conversion.attributeToAttribute( { model: 'rowspan', view: 'rowspan' } );
  
  		// Table heading columns conversion (a change of heading rows requires a reconversion of the whole table).
  		conversion.for( 'editingDowncast' ).add( downcastTableHeadingColumnsChange() );
  
  		// Define all the commands.
  		editor.commands.add( 'insertTable', new InsertTableCommand( editor ) );
  		editor.commands.add( 'insertTableRowAbove', new InsertRowCommand( editor, { order: 'above' } ) );
  		editor.commands.add( 'insertTableRowBelow', new InsertRowCommand( editor, { order: 'below' } ) );
  		editor.commands.add( 'insertTableColumnLeft', new InsertColumnCommand( editor, { order: 'left' } ) );
  		editor.commands.add( 'insertTableColumnRight', new InsertColumnCommand( editor, { order: 'right' } ) );
  
  		editor.commands.add( 'removeTableRow', new RemoveRowCommand( editor ) );
  		editor.commands.add( 'removeTableColumn', new RemoveColumnCommand( editor ) );
  
  		editor.commands.add( 'splitTableCellVertically', new SplitCellCommand( editor, { direction: 'vertically' } ) );
  		editor.commands.add( 'splitTableCellHorizontally', new SplitCellCommand( editor, { direction: 'horizontally' } ) );
  
  		editor.commands.add( 'mergeTableCells', new MergeCellsCommand( editor ) );
  
  		editor.commands.add( 'mergeTableCellRight', new MergeCellCommand( editor, { direction: 'right' } ) );
  		editor.commands.add( 'mergeTableCellLeft', new MergeCellCommand( editor, { direction: 'left' } ) );
  		editor.commands.add( 'mergeTableCellDown', new MergeCellCommand( editor, { direction: 'down' } ) );
  		editor.commands.add( 'mergeTableCellUp', new MergeCellCommand( editor, { direction: 'up' } ) );
  
  		editor.commands.add( 'setTableColumnHeader', new SetHeaderColumnCommand( editor ) );
  		editor.commands.add( 'setTableRowHeader', new SetHeaderRowCommand( editor ) );
  
  		editor.commands.add( 'selectTableRow', new SelectRowCommand( editor ) );
  		editor.commands.add( 'selectTableColumn', new SelectColumnCommand( editor ) );
  
  		injectTableHeadingRowsRefreshPostFixer( model );
  		injectTableLayoutPostFixer( model );
  		injectTableCellRefreshPostFixer( model, editor.editing.mapper );
  		injectTableCellParagraphPostFixer( model );
  	}
  
  	/**
  	 * @inheritDoc
  	 */
  	static get requires() {
  		return [ TableUtils ];
  	}
  }
  