new ckeditor

New ckeditor

ckeditor/core/dom/text.js

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+/**
+ * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.
+ * For licensing, see LICENSE.md or http://ckeditor.com/license
+ */
+
+/**
+ * @fileOverview Defines the {@link CKEDITOR.dom.text} class, which represents
+ *		a DOM text node.
+ */
+
+/**
+ * Represents a DOM text node.
+ *
+ *		var nativeNode = document.createTextNode( 'Example' );
+ *		var text = new CKEDITOR.dom.text( nativeNode );
+ *
+ *		var text = new CKEDITOR.dom.text( 'Example' );
+ *
+ * @class
+ * @extends CKEDITOR.dom.node
+ * @constructor Creates a text class instance.
+ * @param {Object/String} text A native DOM text node or a string containing
+ * the text to use to create a new text node.
+ * @param {CKEDITOR.dom.document} [ownerDocument] The document that will contain
+ * the node in case of new node creation. Defaults to the current document.
+ */
+CKEDITOR.dom.text = function( text, ownerDocument ) {
+	if ( typeof text == 'string' )
+		text = ( ownerDocument ? ownerDocument.$ : document ).createTextNode( text );
+
+	// Theoretically, we should call the base constructor here
+	// (not CKEDITOR.dom.node though). But, IE doesn't support expando
+	// properties on text node, so the features provided by domObject will not
+	// work for text nodes (which is not a big issue for us).
+	//
+	// CKEDITOR.dom.domObject.call( this, element );
+
+	this.$ = text;
+};
+
+CKEDITOR.dom.text.prototype = new CKEDITOR.dom.node();
+
+CKEDITOR.tools.extend( CKEDITOR.dom.text.prototype, {
+	/**
+	 * The node type. This is a constant value set to {@link CKEDITOR#NODE_TEXT}.
+	 *
+	 * @readonly
+	 * @property {Number} [=CKEDITOR.NODE_TEXT]
+	 */
+	type: CKEDITOR.NODE_TEXT,
+
+	/**
+	 * Gets length of node's value.
+	 *
+	 * @returns {Number}
+	 */
+	getLength: function() {
+		return this.$.nodeValue.length;
+	},
+
+	/**
+	 * Gets node's value.
+	 *
+	 * @returns {String}
+	 */
+	getText: function() {
+		return this.$.nodeValue;
+	},
+
+	/**
+	 * Sets node's value.
+	 *
+	 * @param {String} text
+	 */
+	setText: function( text ) {
+		this.$.nodeValue = text;
+	},
+
+	/**
+	 * Breaks this text node into two nodes at the specified offset,
+	 * keeping both in the tree as siblings. This node then only contains
+	 * all the content up to the offset point. A new text node, which is
+	 * inserted as the next sibling of this node, contains all the content
+	 * at and after the offset point. When the offset is equal to the
+	 * length of this node, the new node has no data.
+	 *
+	 * @param {Number} The position at which to split, starting from zero.
+	 * @returns {CKEDITOR.dom.text} The new text node.
+	 */
+	split: function( offset ) {
+
+		// Saved the children count and text length beforehand.
+		var parent = this.$.parentNode,
+			count = parent.childNodes.length,
+			length = this.getLength();
+
+		var doc = this.getDocument();
+		var retval = new CKEDITOR.dom.text( this.$.splitText( offset ), doc );
+
+		if ( parent.childNodes.length == count ) {
+			// If the offset is after the last char, IE creates the text node
+			// on split, but don't include it into the DOM. So, we have to do
+			// that manually here.
+			if ( offset >= length ) {
+				retval = doc.createText( '' );
+				retval.insertAfter( this );
+			} else {
+				// IE BUG: IE8+ does not update the childNodes array in DOM after splitText(),
+				// we need to make some DOM changes to make it update. (#3436)
+				var workaround = doc.createText( '' );
+				workaround.insertAfter( retval );
+				workaround.remove();
+			}
+		}
+
+		return retval;
+	},
+
+	/**
+	 * Extracts characters from indexA up to but not including `indexB`.
+	 *
+	 * @param {Number} indexA An integer between `0` and one less than the
+	 * length of the text.
+	 * @param {Number} [indexB] An integer between `0` and the length of the
+	 * string. If omitted, extracts characters to the end of the text.
+	 */
+	substring: function( indexA, indexB ) {
+		// We need the following check due to a Firefox bug
+		// https://bugzilla.mozilla.org/show_bug.cgi?id=458886
+		if ( typeof indexB != 'number' )
+			return this.$.nodeValue.substr( indexA );
+		else
+			return this.$.nodeValue.substring( indexA, indexB );
+	}
+} );