ckeditor/_source/core/htmlparser/fragment.js

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/*
Copyright (c) 2003-2011, CKSource - Frederico Knabben. All rights reserved.
For licensing, see LICENSE.html or http://ckeditor.com/license
*/

/**
 * A lightweight representation of an HTML DOM structure.
 * @constructor
 * @example
 */
CKEDITOR.htmlParser.fragment = function()
{
	/**
	 * The nodes contained in the root of this fragment.
	 * @type Array
	 * @example
	 * var fragment = CKEDITOR.htmlParser.fragment.fromHtml( '<b>Sample</b> Text' );
	 * alert( fragment.children.length );  "2"
	 */
	this.children = [];

	/**
	 * Get the fragment parent. Should always be null.
	 * @type Object
	 * @default null
	 * @example
	 */
	this.parent = null;

	/** @private */
	this._ =
	{
		isBlockLike : true,
		hasInlineStarted : false
	};
};

(function()
{
	// Block-level elements whose internal structure should be respected during
	// parser fixing.
	var nonBreakingBlocks = CKEDITOR.tools.extend( { table:1,ul:1,ol:1,dl:1 }, CKEDITOR.dtd.table, CKEDITOR.dtd.ul, CKEDITOR.dtd.ol, CKEDITOR.dtd.dl );

	// IE < 8 don't output the close tag on definition list items. (#6975)
	var optionalCloseTags = CKEDITOR.env.ie && CKEDITOR.env.version < 8 ? { dd : 1, dt :1 } : {};

	var listBlocks = { ol:1, ul:1 };

	// Dtd of the fragment element, basically it accept anything except for intermediate structure, e.g. orphan <li>.
	var rootDtd = CKEDITOR.tools.extend( {}, { html: 1 }, CKEDITOR.dtd.html, CKEDITOR.dtd.body, CKEDITOR.dtd.head, { style:1,script:1 } );

	function isRemoveEmpty( node )
	{
		// Empty link is to be removed when empty but not anchor. (#7894)
		return node.name == 'a' && node.attributes.href
			|| CKEDITOR.dtd.$removeEmpty[ node.name ];
	}

	/**
	 * Creates a {@link CKEDITOR.htmlParser.fragment} from an HTML string.