<?xml version="1.0" encoding="utf-8"?>
  <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" 
      xmlns:example="*" 
      layout="vertical"
      creationComplete="initApp()">
      
      <mx:Style source="actionscript-book-PodcastPlayer-main.css" />
         
      <mx:Script>
          <![CDATA[
          //import com.example.programmingas3.podcastplayer.RSSItem;
          //import com.example.programmingas3.utils.DateUtil;
          //import com.example.programmingas3.podcastplayer.URLService;
          //import com.example.programmingas3.podcastplayer.RSSChannel;
          import mx.events.CloseEvent;
          import mx.controls.Alert;
          
          public var service:actionscript_book_PodcastPlayer_com_example_programmingas3_podcastplayer_URLService;
          
    
          public var feeds:XMLList;
          public var articles:XMLList;
          
          public var currentFeed:actionscript_book_PodcastPlayer_com_example_programmingas3_podcastplayer_RSSChannel;
          
          public function initApp():void
          {
              feedList.addEventListener(Event.CHANGE, onFeedSelected); 
              
              var configService:actionscript_book_PodcastPlayer_com_example_programmingas3_podcastplayer_URLService = new actionscript_book_PodcastPlayer_com_example_programmingas3_podcastplayer_URLService("actionscript-book-PodcastPlayer-playerconfig.xml");
                      configService.addEventListener(DataEvent.DATA, onConfigReceived);
                      configService.addEventListener(IOErrorEvent.IO_ERROR, onFeedError);
                      configService.addEventListener(SecurityErrorEvent.SECURITY_ERROR, onFeedError);
                      configService.send();
          }
      
          public function onFeedSelected(event:Event):void
          {
                  var url:String = feedList.selectedItem.url.toString();
                  if (url != null)
                  {
                          service = new actionscript_book_PodcastPlayer_com_example_programmingas3_podcastplayer_URLService(url);
                          service.addEventListener(DataEvent.DATA, onFeedReceived);
                          service.addEventListener(IOErrorEvent.IO_ERROR, onFeedError);
                          service.addEventListener(SecurityErrorEvent.SECURITY_ERROR, onFeedError);
                          service.send();
                  }
          }
  
          public function onConfigReceived(event:DataEvent):void
          {
                  var result:XML = new XML(event.data);
                  this.feeds = result.feed;
                  
                  this.feedList.dataProvider = feeds;
                  this.feedList.selectedIndex = 0;
              this.feedList.dispatchEvent(new Event(Event.CHANGE));
          }
                      
          public function onFeedReceived(event:DataEvent):void
          {
                  var result:XML = new XML(event.data);
                  
                  var channelXML:XMLList = result.child("channel");
                  if (channelXML != null)
                          {
                              this.currentFeed = actionscript_book_PodcastPlayer_com_example_programmingas3_podcastplayer_RSSChannel.parseFeed(channelXML[0]);
                             
                              if (this.currentFeed != null)
                              {
                                      this.articleGrid.dataProvider = this.currentFeed.items;
                                      this.feedImg.source = this.currentFeed.imageUrl;
                                  
                                      this.feedDescriptionTxt.htmlText = this.currentFeed.getDescriptionHTML();
                              }
                          }
          }
          
          public function onFeedError(event:ErrorEvent):void
          {
              showError(new Error(event.text));
          }