utils.js 1.3 KB

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  1. /**
  2. * @license Copyright (c) 2003-2016, CKSource - Frederico Knabben. All rights reserved.
  3. * For licensing, see LICENSE.md.
  4. */
  5. 'use strict';
  6. import TreeWalker from '/ckeditor5/engine/model/treewalker.js';
  7. /**
  8. * Returns tree structure as a simplified string. Elements are uppercase and characters are lowercase.
  9. * Start and end of an element is marked the same way, by the element's name (in uppercase).
  10. *
  11. * let element = new Element( 'div', [], [ 'abc', new Element( 'p', [], 'foo' ), 'xyz' ] );
  12. * modelUtils.getNodesAndText( element ); // abcPfooPxyz
  13. *
  14. * @param {engine.model.Range} range Range to stringify.
  15. * @returns {String} String representing element inner structure.
  16. */
  17. export function getNodesAndText( range ) {
  18. let txt = '';
  19. const treeWalker = new TreeWalker( { boundaries: range } );
  20. for ( let value of treeWalker ) {
  21. let node = value.item;
  22. let nodeText = node.text || node.character;
  23. if ( nodeText ) {
  24. txt += nodeText.toLowerCase();
  25. } else {
  26. txt += node.name.toUpperCase();
  27. }
  28. }
  29. return txt;
  30. }
  31. /**
  32. * Returns object JSON representation. It pases an object by JSON.stringify and JSON.parse functions.
  33. *
  34. * @param {Object|Array} object
  35. */
  36. export function jsonParseStringify( object ) {
  37. return JSON.parse( JSON.stringify( object ) );
  38. }