+/*\r
+Copyright (c) 2003-2009, CKSource - Frederico Knabben. All rights reserved.\r
+For licensing, see LICENSE.html or http://ckeditor.com/license\r
+*/\r
+\r
+/**\r
+ * @fileOverview Defines the {@link CKEDITOR.dom.text} class, which represents\r
+ * a DOM text node.\r
+ */\r
+\r
+/**\r
+ * Represents a DOM text node.\r
+ * @constructor\r
+ * @augments CKEDITOR.dom.node\r
+ * @param {Object|String} text A native DOM text node or a string containing\r
+ * the text to use to create a new text node.\r
+ * @param {CKEDITOR.dom.document} [ownerDocument] The document that will contain\r
+ * the node in case of new node creation. Defaults to the current document.\r
+ * @example\r
+ * var nativeNode = document.createTextNode( 'Example' );\r
+ * var text = CKEDITOR.dom.text( nativeNode );\r
+ * @example\r
+ * var text = CKEDITOR.dom.text( 'Example' );\r
+ */\r
+CKEDITOR.dom.text = function( text, ownerDocument )\r
+{\r
+ if ( typeof text == 'string' )\r
+ text = ( ownerDocument ? ownerDocument.$ : document ).createTextNode( text );\r
+\r
+ // Theoretically, we should call the base constructor here\r
+ // (not CKEDITOR.dom.node though). But, IE doesn't support expando\r
+ // properties on text node, so the features provided by domObject will not\r
+ // work for text nodes (which is not a big issue for us).\r
+ //\r
+ // CKEDITOR.dom.domObject.call( this, element );\r
+\r
+ /**\r
+ * The native DOM text node represented by this class instance.\r
+ * @type Object\r
+ * @example\r
+ * var element = new CKEDITOR.dom.text( 'Example' );\r
+ * alert( element.$.nodeType ); // "3"\r
+ */\r
+ this.$ = text;\r
+};\r
+\r
+CKEDITOR.dom.text.prototype = new CKEDITOR.dom.node();\r
+\r
+CKEDITOR.tools.extend( CKEDITOR.dom.text.prototype,\r
+ /** @lends CKEDITOR.dom.text.prototype */\r
+ {\r
+ /**\r
+ * The node type. This is a constant value set to\r
+ * {@link CKEDITOR.NODE_TEXT}.\r
+ * @type Number\r
+ * @example\r
+ */\r
+ type : CKEDITOR.NODE_TEXT,\r
+\r
+ getLength : function()\r
+ {\r
+ return this.$.nodeValue.length;\r
+ },\r
+\r
+ getText : function()\r
+ {\r
+ return this.$.nodeValue;\r
+ },\r
+\r
+ /**\r
+ * Breaks this text node into two nodes at the specified offset,\r
+ * keeping both in the tree as siblings. This node then only contains\r
+ * all the content up to the offset point. A new text node, which is\r
+ * inserted as the next sibling of this node, contains all the content\r
+ * at and after the offset point. When the offset is equal to the\r
+ * length of this node, the new node has no data.\r
+ * @param {Number} The position at which to split, starting from zero.\r
+ * @returns {CKEDITOR.dom.text} The new text node.\r
+ */\r
+ split : function( offset )\r
+ {\r
+ // If the offset is after the last char, IE creates the text node\r
+ // on split, but don't include it into the DOM. So, we have to do\r
+ // that manually here.\r
+ if ( CKEDITOR.env.ie && offset == this.getLength() )\r
+ {\r
+ var next = this.getDocument().createText( '' );\r
+ next.insertAfter( this );\r
+ return next;\r
+ }\r
+\r
+ var doc = this.getDocument();\r
+ var retval = new CKEDITOR.dom.text( this.$.splitText( offset ), doc );\r
+\r
+ // IE BUG: IE8 does not update the childNodes array in DOM after splitText(),\r
+ // we need to make some DOM changes to make it update. (#3436)\r
+ if ( CKEDITOR.env.ie8 )\r
+ {\r
+ var workaround = new CKEDITOR.dom.text( '', doc );\r
+ workaround.insertAfter( retval );\r
+ workaround.remove();\r
+ }\r
+\r
+ return retval;\r
+ },\r
+\r
+ /**\r
+ * Extracts characters from indexA up to but not including indexB.\r
+ * @param {Number} indexA An integer between 0 and one less than the\r
+ * length of the text.\r
+ * @param {Number} [indexB] An integer between 0 and the length of the\r
+ * string. If omitted, extracts characters to the end of the text.\r
+ */\r
+ substring : function( indexA, indexB )\r
+ {\r
+ // We need the following check due to a Firefox bug\r
+ // https://bugzilla.mozilla.org/show_bug.cgi?id=458886\r
+ if ( typeof indexB != 'number' )\r
+ return this.$.nodeValue.substr( indexA );\r
+ else\r
+ return this.$.nodeValue.substring( indexA, indexB );\r
+ }\r
+ });\r