[AS3 SNIPPET] Url shortener class using http://is.gd/ public service

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package com.rblab.framework.net
{
import flash.events.Event;
import flash.events.EventDispatcher;
import flash.events.IOErrorEvent;
import flash.net.URLLoader;
import flash.net.URLRequest;

/**
* Dispatched when the instance has successfully shortened an url.
* @eventType flash.events.COMPLETE
*/
[Event(name="complete", type="flash.events.Event")]
/**
* Dispatched when the instance has encountered an error while trying to encode your url.
* @eventType flash.events.IOErrorEvent.IO_ERROR
*/
[Event(name="ioError", type="flash.events.IOErrorEvent")]

/**
* URL Shortener Class using <a href="http://is.gd/" target="_blank">http://is.gd/</a> public service
* @author Sandro Ducceschi [swfjunkie.com, Switzerland]
*/

public class URLShortener extends EventDispatcher
{
//--------------------------------------------------------------------------
//
// Class variables
//
//--------------------------------------------------------------------------
private static const IS_GD_URL:String = "http://is.gd/api.php?longurl=";
//--------------------------------------------------------------------------
//
// Initialization
//
//--------------------------------------------------------------------------
/**
* Creates a new URLShortener Instance
*/
public function URLShortener()
{
init();
}
/**
* @private
* Initializes the instance.
*/
private function init():void
{
urlLoader = new URLLoader();
urlRequest = new URLRequest();
urlLoader.addEventListener(Event.COMPLETE,handleComplete);
urlLoader.addEventListener(IOErrorEvent.IO_ERROR,handleError);
}
//--------------------------------------------------------------------------
//
// Variables
//
//--------------------------------------------------------------------------
private var urlLoader:URLLoader;
private var urlRequest:URLRequest;
//--------------------------------------------------------------------------
//
// Properties
//
//--------------------------------------------------------------------------
/** @private */
private var _url:String;
/**
* The Shortened URL
*/
public function get url():String
{
return _url;
}

//--------------------------------------------------------------------------
//
// API
//
//--------------------------------------------------------------------------

/**
* Shortens the given URL
* @param url Long URL that should be shortened
*/
public function shorten(url:String):void
{
_url = null;
urlRequest.url = IS_GD_URL + url;
urlLoader.load(urlRequest);
}

/**
* Completely destroys the instance and frees all objects for the garbage
* collector by setting their references to null.
*/
public function destroy():void
{
_url = null;
urlLoader = null;
urlRequest = null;
urlLoader.removeEventListener(Event.COMPLETE,handleComplete);
urlLoader.removeEventListener(IOErrorEvent.IO_ERROR,handleError);
}

//--------------------------------------------------------------------------
//
// Eventhandling
//
//--------------------------------------------------------------------------
/** @private */
private function handleComplete(event:Event):void
{
_url = urlLoader.data;
dispatchEvent(new Event(Event.COMPLETE));
}

/** @private */
private function handleError(event:IOErrorEvent):void
{
dispatchEvent(new IOErrorEvent(IOErrorEvent.IO_ERROR,false,false,"Shortening failed"));
}
}
}