loader class

/*
 
Usage: 
 
import com.zguillez.display.Contenedor;
 
var cont:Contenedor = new Contenedor();
cont.asset = "pelicula.swf"
 
 
cont.addEventListener(Contenedor.CARGADO, listo);
function listo(e:Event):void
{
   trace("carga lista")
}
cont.asset = "pelicula2.swf"
 
 
*/
 
package com.zguillez.display
{
   import flash.display.Sprite;
   import flash.display.Loader;
   import flash.net.URLRequest;
   import flash.events.Event;
   import flash.events.EventDispatcher;
   //-----------------------------------------
   public class Contenedor extends Sprite
   {
      public static  var CARGADO:String = "cargado";
      private var _clip:Sprite = new Sprite();
      private var _cargado:Boolean = false;
      private var _content:Sprite;
      private var _urlAsset:String;
      //-----------------------------------------
      public function Contenedor(asset:String=null)
      {
         _urlAsset = asset;
         if (_urlAsset != null) {
            iniLoad();
         }
      }
      //-----------------------------------------
      private function iniLoad(asset:String=null):void
      {
         var loader:Loader = new Loader();
         var request:URLRequest = new URLRequest(_urlAsset);
         loader.load(request);
         var dispatcher:EventDispatcher = loader.contentLoaderInfo;
         dispatcher.addEventListener(Event.INIT, registraContenido);
         addChild(loader);
      }
      //-----------------------------------------
      public function set asset(a:String):void
      {
         if (_urlAsset != null) {
            removeChild(_clip);
         }
         _urlAsset = a;
         iniLoad();
      }
      //-----------------------------------------
      public function get clip():Sprite
      {
         return _clip;
      }
      public function get cargado():Boolean
      {
         return _cargado;
      }
      //-----------------------------------------
      public function registraContenido(e:Event):void
      {
         _cargado = true;
         _clip = e.target.content;
         dispatchEvent(new Event(Contenedor.CARGADO));
      }
      //-----------------------------------------
   }
}