/*

 * FCKeditor - The text editor for Internet - http://www.fckeditor.net

 * Copyright (C) 2003-2009 Frederico Caldeira Knabben

 *

 * == BEGIN LICENSE ==

 *

 * Licensed under the terms of any of the following licenses at your

 * choice:

 *

 *  - GNU General Public License Version 2 or later (the "GPL")

 *    http://www.gnu.org/licenses/gpl.html

 *

 *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")

 *    http://www.gnu.org/licenses/lgpl.html

 *

 *  - Mozilla Public License Version 1.1 or later (the "MPL")

 *    http://www.mozilla.org/MPL/MPL-1.1.html

 *

 * == END LICENSE ==

 *

 * 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.

 */



var FCKXml = function()

{}



FCKXml.prototype.GetHttpRequest = function()

{

	// Gecko / IE7

	try { return new XMLHttpRequest(); }

	catch(e) {}



	// IE6

	try { return new ActiveXObject( 'Msxml2.XMLHTTP' ) ; }

	catch(e) {}



	// IE5

	try { return new ActiveXObject( 'Microsoft.XMLHTTP' ) ; }

	catch(e) {}



	return null ;

}



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 )

			{

				var oXml ;

				try

				{

					// this is the same test for an FF2 bug as in fckxml_gecko.js

					// but we've moved the responseXML assignment into the try{}

					// so we don't even have to check the return status codes.

					var test = oXmlHttp.responseXML.firstChild ;

					oXml = oXmlHttp.responseXML ;

				}

				catch ( e )

				{

					try

					{

						oXml = (new DOMParser()).parseFromString( oXmlHttp.responseText, 'text/xml' ) ;

					}

					catch ( e ) {}

				}



				if ( !oXml || !oXml.firstChild || oXml.firstChild.nodeName == 'parsererror' )

				{

					alert( 'The server didn\'t send back a proper XML response. Please contact your system administrator.\n\n' +

							'XML request error: ' + oXmlHttp.statusText + ' (' + oXmlHttp.status + ')\n\n' +

							'Requested URL:\n' + urlToCall + '\n\n' +

							'Response text:\n' + oXmlHttp.responseText ) ;

					return ;

				}



				oFCKXml.DOMDocument = oXml ;

				asyncFunctionPointer( oFCKXml ) ;

			}

		}

	}



	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 ;

	}

}