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   1  /*
   2   * FCKeditor - The text editor for Internet - http://www.fckeditor.net
   3   * Copyright (C) 2003-2007 Frederico Caldeira Knabben
   4   * 
   5   * == BEGIN LICENSE ==
   6   * 
   7   * Licensed under the terms of any of the following licenses at your
   8   * choice:
   9   * 
  10   *  - GNU General Public License Version 2 or later (the "GPL")
  11   *    http://www.gnu.org/licenses/gpl.html
  12   * 
  13   *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
  14   *    http://www.gnu.org/licenses/lgpl.html
  15   * 
  16   *  - Mozilla Public License Version 1.1 or later (the "MPL")
  17   *    http://www.mozilla.org/MPL/MPL-1.1.html
  18   * 
  19   * == END LICENSE ==
  20   * 
  21   * File Name: fckxml.js
  22   *     Defines the FCKXml object that is used for XML data calls
  23   *     and XML processing.
  24   *     This script is shared by almost all pages that compose the 
  25   *     File Browser frameset.
  26   * 
  27   * File Authors:
  28   *         Frederico Caldeira Knabben (www.fckeditor.net)
  29   */
  30  
  31  var FCKXml = function()
  32  {}
  33  
  34  FCKXml.prototype.GetHttpRequest = function()
  35  {
  36      // Gecko / IE7
  37      if ( typeof(XMLHttpRequest) != 'undefined' )
  38          return new XMLHttpRequest() ;
  39  
  40      // IE6
  41      try { return new ActiveXObject( 'Msxml2.XMLHTTP' ) ; } 
  42      catch(e) {}
  43  
  44      // IE5
  45      try { return new ActiveXObject( 'Microsoft.XMLHTTP' ) ; }
  46      catch(e) {}
  47  
  48      return null ;
  49  }
  50  
  51  FCKXml.prototype.LoadUrl = function( urlToCall, asyncFunctionPointer )
  52  {
  53      var oFCKXml = this ;
  54  
  55      var bAsync = ( typeof(asyncFunctionPointer) == 'function' ) ;
  56  
  57      var oXmlHttp = this.GetHttpRequest() ;
  58          
  59      oXmlHttp.open( "GET", urlToCall, bAsync ) ;
  60  
  61      if ( bAsync )
  62      {    
  63          oXmlHttp.onreadystatechange = function() 
  64          {
  65              if ( oXmlHttp.readyState == 4 )
  66              {
  67                  if ( oXmlHttp.responseXML == null || oXmlHttp.responseXML.firstChild == null)
  68                  {
  69                      alert( 'The server didn\'t send back a proper XML response.\r\n\r\n' +
  70                              'Requested URL: ' + urlToCall + '\r\n' +
  71                              'Response text:\r\n' + oXmlHttp.responseText ) ;
  72                      return ;
  73                  }
  74                  oFCKXml.DOMDocument = oXmlHttp.responseXML ;
  75                  if ( oXmlHttp.status == 200 || oXmlHttp.status == 304 )
  76                      asyncFunctionPointer( oFCKXml ) ;
  77                  else
  78                      alert( 'XML request error: ' + oXmlHttp.statusText + ' (' + oXmlHttp.status + ')' ) ;
  79              }
  80          }
  81      }
  82      
  83      oXmlHttp.send( null ) ;
  84      
  85      if ( ! bAsync )
  86      {
  87          if ( oXmlHttp.status == 200 || oXmlHttp.status == 304 )
  88              this.DOMDocument = oXmlHttp.responseXML ;
  89          else
  90          {
  91              alert( 'XML request error: ' + oXmlHttp.statusText + ' (' + oXmlHttp.status + ')' ) ;
  92          }
  93      }
  94  }
  95  
  96  FCKXml.prototype.SelectNodes = function( xpath )
  97  {
  98      if ( navigator.userAgent.indexOf('MSIE') >= 0 )        // IE
  99          return this.DOMDocument.selectNodes( xpath ) ;
 100      else                    // Gecko
 101      {
 102          var aNodeArray = new Array();
 103  
 104          var xPathResult = this.DOMDocument.evaluate( xpath, this.DOMDocument, 
 105                  this.DOMDocument.createNSResolver(this.DOMDocument.documentElement), XPathResult.ORDERED_NODE_ITERATOR_TYPE, null) ;
 106          if ( xPathResult ) 
 107          {
 108              var oNode = xPathResult.iterateNext() ;
 109               while( oNode )
 110               {
 111                   aNodeArray[aNodeArray.length] = oNode ;
 112                   oNode = xPathResult.iterateNext();
 113               }
 114          } 
 115          return aNodeArray ;
 116      }
 117  }
 118  
 119  FCKXml.prototype.SelectSingleNode = function( xpath ) 
 120  {
 121      if ( navigator.userAgent.indexOf('MSIE') >= 0 )        // IE
 122          return this.DOMDocument.selectSingleNode( xpath ) ;
 123      else                    // Gecko
 124      {
 125          var xPathResult = this.DOMDocument.evaluate( xpath, this.DOMDocument,
 126                  this.DOMDocument.createNSResolver(this.DOMDocument.documentElement), 9, null);
 127  
 128          if ( xPathResult && xPathResult.singleNodeValue )
 129              return xPathResult.singleNodeValue ;
 130          else    
 131              return null ;
 132      }
 133  }