fckxml.js

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/*
 * FCKeditor - The text editor for internet
 * Copyright (C) 2003-2006 Frederico Caldeira Knabben
 * 
 * Licensed under the terms of the GNU Lesser General Public License:
 * 		http://www.opensource.org/licenses/lgpl-license.php
 * 
 * For further information visit:
 * 		http://www.fckeditor.net/
 * 
 * "Support Open Source software. What about a donation today?"
 * 
 * File Name: fckxml.js
 * 	Defines the FCKXml object that is used for XML data calls
 * 	and XML processing.
 * 	This script is shared by almost all pages that compose the 
 * 	File Browser frameset.
 * 
 * File Authors:
 * 		Frederico Caldeira Knabben ([e-mail])
 */

var FCKXml = function()
{}

FCKXml.prototype.GetHttpRequest = function()
{
	// Gecko / IE7
	if ( typeof(XMLHttpRequest) != 'undefined' )
		return new XMLHttpRequest() ;

	// IE6
	try { return new ActiveXObject("Msxml2.XMLHTTP") ; } 
	catch(e) {}

	// IE5
	try { return new ActiveXObject("Microsoft.XMLHTTP") ; }
	catch(e) {}
}

FCKXml.prototype.LoadUrl = function( urlToCall, asyncFunctionPointer )
{
	var oFCKXml = this ;

	var bAsync = ( typeof(asyncFunctionPointer) == 'function' ) ;

	var oXmlHttp = this.GetHttpRequest() ;
		
	oXmlHttp.open( "GET", urlToCall, bAsync ) ;
	
	if ( bAsync )
	{	
		oXmlHttp.onreadystatechange = function() 
		{
			if ( oXmlHttp.readyState == 4 )
			{
				oFCKXml.DOMDocument = oXmlHttp.responseXML ;
				if ( oXmlHttp.status == 200 || oXmlHttp.status == 304 )
					asyncFunctionPointer( oFCKXml ) ;
				else
					alert( 'XML request error: ' + oXmlHttp.statusText + ' (' + oXmlHttp.status + ')' ) ;
			}
		}
	}
	
	oXmlHttp.send( null ) ;
	
	if ( ! bAsync )
	{
		if ( oXmlHttp.status == 200 || oXmlHttp.status == 304 )
			this.DOMDocument = oXmlHttp.responseXML ;
		else
		{
			alert( 'XML request error: ' + oXmlHttp.statusText + ' (' + oXmlHttp.status + ')' ) ;
		}
	}
}

FCKXml.prototype.SelectNodes = function( xpath )
{
	if ( navigator.userAgent.indexOf('MSIE') >= 0 )		// IE
		return this.DOMDocument.selectNodes( xpath ) ;
	else					// Gecko
	{
		var aNodeArray = new Array();

		var xPathResult = this.DOMDocument.evaluate( xpath, this.DOMDocument, 
				this.DOMDocument.createNSResolver(this.DOMDocument.documentElement), XPathResult.ORDERED_NODE_ITERATOR_TYPE, null) ;
		if ( xPathResult ) 
		{
			var oNode = xPathResult.iterateNext() ;
 			while( oNode )
 			{
 				aNodeArray[aNodeArray.length] = oNode ;
 				oNode = xPathResult.iterateNext();
 			}
		} 
		return aNodeArray ;
	}
}

FCKXml.prototype.SelectSingleNode = function( xpath ) 
{
	if ( navigator.userAgent.indexOf('MSIE') >= 0 )		// IE
		return this.DOMDocument.selectSingleNode( xpath ) ;
	else					// Gecko
	{
		var xPathResult = this.DOMDocument.evaluate( xpath, this.DOMDocument,
				this.DOMDocument.createNSResolver(this.DOMDocument.documentElement), 9, null);

		if ( xPathResult && xPathResult.singleNodeValue )
			return xPathResult.singleNodeValue ;
		else	
			return null ;
	}
}