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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 table/converters/table-cell-paragraph-post-fixer
- */
- /**
- * Injects a table cell post-fixer into the model which inserts a `paragraph` element into empty table cells.
- *
- * A table cell must contain at least one block element as a child. An empty table cell will have an empty `paragraph` as a child.
- *
- * <table>
- * <tableRow>
- * <tableCell></tableCell>
- * </tableRow>
- * </table>
- *
- * Will be fixed to:
- *
- * <table>
- * <tableRow>
- * <tableCell><paragraph></paragraph></tableCell>
- * </tableRow>
- * </table>
- *
- * @param {module:engine/model/model~Model} model
- */
- export default function injectTableCellParagraphPostFixer( model ) {
- model.document.registerPostFixer( writer => tableCellContentsPostFixer( writer, model ) );
- }
- // The table cell contents post-fixer.
- //
- // @param {module:engine/model/writer~Writer} writer
- // @param {module:engine/model/model~Model} model
- function tableCellContentsPostFixer( writer, model ) {
- const changes = model.document.differ.getChanges();
- let wasFixed = false;
- for ( const entry of changes ) {
- if ( entry.type == 'insert' && entry.name == 'table' ) {
- wasFixed = fixTable( entry.position.nodeAfter, writer ) || wasFixed;
- }
- if ( entry.type == 'insert' && entry.name == 'tableRow' ) {
- wasFixed = fixTableRow( entry.position.nodeAfter, writer ) || wasFixed;
- }
- if ( entry.type == 'insert' && entry.name == 'tableCell' ) {
- wasFixed = fixTableCellContent( entry.position.nodeAfter, writer ) || wasFixed;
- }
- if ( checkTableCellChange( entry ) ) {
- wasFixed = fixTableCellContent( entry.position.parent, writer ) || wasFixed;
- }
- }
- return wasFixed;
- }
- // Fixes all table cells in a table.
- //
- // @param {module:engine/model/element~Element} table
- // @param {module:engine/model/writer~Writer} writer
- function fixTable( table, writer ) {
- let wasFixed = false;
- for ( const row of table.getChildren() ) {
- wasFixed = fixTableRow( row, writer ) || wasFixed;
- }
- return wasFixed;
- }
- // Fixes all table cells in a table row.
- //
- // @param {module:engine/model/element~Element} tableRow
- // @param {module:engine/model/writer~Writer} writer
- function fixTableRow( tableRow, writer ) {
- let wasFixed = false;
- for ( const tableCell of tableRow.getChildren() ) {
- wasFixed = fixTableCellContent( tableCell, writer ) || wasFixed;
- }
- return wasFixed;
- }
- // Fixes all table cell content by:
- // - Adding a paragraph to a table cell without any child.
- // - Wrapping direct $text in a `<paragraph>`.
- //
- // @param {module:engine/model/element~Element} table
- // @param {module:engine/model/writer~Writer} writer
- // @returns {Boolean}
- function fixTableCellContent( tableCell, writer ) {
- // Insert paragraph to an empty table cell.
- if ( tableCell.childCount == 0 ) {
- writer.insertElement( 'paragraph', tableCell );
- return true;
- }
- // Check table cell children for directly placed text nodes.
- // Temporary solution. See https://github.com/ckeditor/ckeditor5/issues/1464.
- const textNodes = Array.from( tableCell.getChildren() ).filter( child => child.is( 'text' ) );
- for ( const child of textNodes ) {
- writer.wrap( writer.createRangeOn( child ), 'paragraph' );
- }
- // Return true when there were text nodes to fix.
- return !!textNodes.length;
- }
- // Checks if a differ change should fix the table cell. This happens on:
- // - Removing content from the table cell (i.e. `tableCell` can be left empty).
- // - Adding a text node directly into a table cell.
- //
- // @param {Object} differ change entry
- // @returns {Boolean}
- function checkTableCellChange( entry ) {
- if ( !entry.position || !entry.position.parent.is( 'tableCell' ) ) {
- return false;
- }
- return entry.type == 'insert' && entry.name == '$text' || entry.type == 'remove';
- }
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