Read Xml

/*
讀XML的PACKAGE
比一般別人寫的多了一個callback的功能
bg.9sweb.com / by egg
*/
package
{
 import flash.events.Event;
 import flash.events.ProgressEvent;
 import flash.net.URLLoader;
 import flash.net.URLRequest;
 import flash.net.URLRequestMethod;
 
 public class EC_getXmlData
 {
  public  var url            :String            = new String();
  public  var method         :String            = new String('GET');
  public  var callback_onload:Function          = new Function();
  public  var callback_error :Function          = new Function();
  public  var callback       :Function          = new Function();
  
  private var loader  :URLLoader   = new URLLoader();
  private var request :URLRequest  = new URLRequest();
  
  public function getdata(url = '')
  {
   if(url != '') this.url = url;
   request.url         = this.url;
   request.contentType = "text/xml";
   request.method      = URLRequestMethod.GET;
   loader.addEventListener(Event.COMPLETE,this.getComplete);
   loader.addEventListener(ProgressEvent.PROGRESS,this.getProgress);
   try
   {
    trace("loading...");
    loader.load(request);
   }
   catch(error:Error)
   {
    trace(error);
    callback_error(error);
   }
  }
  
  private function getProgress(event:Event)
  {
   //trace(event.type + ", " + event.bytesLoaded + "/" + event.bytesTotal);
   this.callback_onload(event);
  }
  private function getComplete(event:Event)
  {
   var myXmlData:XML  = new XML(event.target.data);
   this.callback(myXmlData);
  }
 }
}