source: trunk/instant_messenger/js/XMLTools.js @ 27

var XMLTools = {
   "__DEBUG__" : false,
   "__DEFAULT_URI__" : im_path + 'controller.php?action=', 
   "__HTTP__" : null,
   "__MODE__" : 'X',
   "__THREADS__" : [],
   "http" : function()
   {
      try
      {
         this.__HTTP__ = new XMLHttpRequest();
         this.__HTTP__.overrideMimeType('text/xml');
      }
      catch (e)
      {
         try
         {
            this.__HTTP__ = new ActiveXObject('Msxml2.XMLHTTP');
         }
         catch (e1)
         {
            try
            {
               this.__HTTP__ = new ActiveXObject('Microsoft.XMLHTTP');
            }
            catch (e2)
            {
               this.__HTTP__ = null;
            }
         }
      }
   },
   "load" : function(pFile)
   {
      var data = null;
      if ( document.implementation.createDocument )
             data = document.implementation.createDocument("", "", null);
      else
         data = new ActiveXObject("Msxml2.FreeThreadedDOMDocument");

      data.async = false;
      data.load(pFile);
      return data;
   },
   "request" : function(pTarget, pMethod, pHandler, pData)
   {
      if ( typeof pHandler != 'function' || this.__THREADS__[pTarget] )
         return false;

      var __this = this;
      var __pTarget = pTarget
      this.http();
      var __HTTP__ = this.__HTTP__;
      this.__THREADS__[pTarget] = pHandler;

      var __handler = function ()
      {
         try
         {
            if ( __HTTP__.readyState == 4 )
            {
               switch ( __HTTP__.status )
               {
                  case 200:
                        var data = ( __this.__MODE__ == 'X' ) ?
                                    __HTTP__.responseXML :
                                    __HTTP__.responseText;
      
                        var handler = __this.__THREADS__[__pTarget];
                        delete __this.__THREADS__[__pTarget];
                        handler(data, __pTarget);
                  break; /* [case : status 200] */
                  case 404:
                        alert('Page Not Found!');
                  break; /* [case : status 404] */
                  default:
               }
            }
         }
         catch(e)
         {
            if ( __this.__DEBUG__ ) alert("request : #2\n\n" + e)
         }
      }

      try
      {
         var target = this.__DEFAULT_URI__ + pTarget;

         if ( pMethod == 'POST' )
         {
            __HTTP__.open("POST", target, true);
            __HTTP__.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
            __HTTP__.setRequestHeader('Cache-Control',  'no-store, no-cache, must-revalidate');
            __HTTP__.setRequestHeader('Cache-Control', 'post-check=0, pre-check=0');
            __HTTP__.setRequestHeader('Pragma', 'no-cache');
            __HTTP__.onreadystatechange = __handler;
            __HTTP__.send(pData);
         }
         else
         {
            __HTTP__.open("GET", target, true);
            __HTTP__.onreadystatechange = __handler;
            __HTTP__.send(null);
         }
      }
      catch(e)
      {
         if ( this.__DEBUG__ ) alert("request : #1\n\n" + e)
      }
      return true;
   },
   "transform" : function(pXML, pXSL)
   {
        var fragment = null;
        if ( window.XSLTProcessor )
        {
                var xslProc = new XSLTProcessor();
                xslProc.importStylesheet(pXSL);
                fragment = xslProc.transformToFragment(pXML, document);
                
                // para retornar valor igual ao ie.
                var aux = document.createElement("div");
                aux.appendChild(fragment);
                fragment = aux.innerHTML;
        }
        else
        {
                var xslTemplate = new ActiveXObject("Msxml2.XSLTemplate");
                xslTemplate.stylesheet = pXSL;
   
                var myXslProc = xslTemplate.createProcessor();
                myXslProc.input = pXML;
   
                myXslProc.transform();
                fragment = myXslProc.output;
                
        }
        return fragment;
   }
}