Custom event in as3

Question

Custom event example in as3
Hi,
Event listener model in cs3 looks nice it is not same as we
were heaving earlier in as2 or till flash 8.
Here is an example of using and making your own custom event
in as3.
This example allow user to load n number of XML file when XML
file is loaded then dispatch an event "XMLLoaded" which can be
listen by any other class any where.
There are two class
1. CustEvent
2. DEvt
Here are the definition of both class
CustEvent.as
* Author - Sanjeev Rajput
* Date - 16-July-07
* class is used to load any XML file and dispatch an event
when XML is loaded
package eventDispatch{
import flash.events.Event;
public class CustEvent extends Event {
public static const XMLLoaded:String = "XMLLoaded";// Event
Name
public var XMLData:XML // loaded XML data
public var XMLRef:String // XML file name
public function CustEvent(type:String,
param:String,param1:XML) {
this.XMLData= param1;
this.XMLRef=param;
super(type);
DEvt.as
* Author - Sanjeev Rajput
* Date - 16-July-07
* class is used to load any XML file and dispatch an event
when XML is loaded
package eventDispatch{
import flash.events.EventDispatcher;
import flash.net.URLLoader;
import flash.events.Event;
import flash.net.URLRequest;
public class DEvt extends EventDispatcher {
private var xmlLdr:URLLoader;
private var urlr:URLRequest;
private var xmlpath_str:String;
public var XMLData:XML;
private var counter:int=0;
private var xmlRequestArr:Array
public function DEvt():void {
this.xmlRequestArr=new Array()
public function loadXML(fileRef:String,xmlRef:String):void {
this.xmlpath_str=fileRef;
this.xmlRequestArr.push(xmlRef)
this.xmlLdr = new URLLoader();
this.urlr=new URLRequest(this.xmlpath_str);
this.xmlLdr.addEventListener(Event.COMPLETE,
completeHandler);
this.xmlLdr.load(this.urlr);
private function completeHandler(evt:Event) {
this.XMLData=new XML(evt.target.data);
this.dispatchEvent(new
CustEvent(CustEvent.XMLLoaded,this.xmlRequestArr[this.counter],this.XMLData));
this.counter++
evtDispatchExample.fla
Inside this fla on very first frame I have following code
import eventDispatch.*;
var DEvt_obj:Evt=new DEvt();
DEvt_obj.loadXML("xml.xml",'xml0 File');
DEvt_obj.loadXML("xml1.xml",'xml1 File');
DEvt_obj.loadXML("xml2.xml",'xml2 File');//----and so on---
DEvt_obj.addEventListener(CustEvent.XMLLoaded,XMLL oaded);
function XMLLoaded(evt:CustEvent) {
//--- here we can check which XML file is loaded----
if(evt.XMLRef=='xml0'){
//--- do necessary task when this file loaded
//---XML data can be found in evt.XMLData
trace(evt.XMLData) //-- property of CustEvent class
if(evt.XMLRef=='xml1'){
//--- do necessary task when this file loaded
//---XML data can be found in evt.XMLData
trace(evt.XMLData) //-- property of CustEvent class
//---- and so on for n number of XML file----
}

Answer 1

Have you tested this online with varyious file sizes? Seems
to me there that
there is no guarantee as to when a loader will complete its
task. If the
second request completed before the first, how would you
dispatch the
correct information?