RE: [flexcoders] What happened to mx.utils.Deletage?

Fri, 24 Mar 2006 10:31:13 -0800

Not exactly sure what you mean by multicasts. Do you mean multicasting for events? If so, that already exists.
 
myService.addEventListener("result", resultHandler1);
myService.addEventListener("result", resultHandler2); // both of these will be called.
myService.myMethod();
 
 
The problem I was talking about occurs when you call multiple methods on the same service object.
 
function callStuff()
{
    myService.myFirstMethod();
    myService.addEventListenter("result", myFirstHandler);
 
    myService.mySecondMethod();
    myService.addEventListener("result", mySecondHandler);
}
 
function myFirstHandler(event: Event)
{
    // this gets called when either myFirstMethod() or mySecondMethod() returns a result.
}
 
function mySecondHandler(event: Event)
{
    // this gets called when either myFirstMethod() or mySecondMethod() returns a result.
}
 
There may be a way that multicasts can help here, but I can't figure it out...
 
-Sho
 

From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Richard Leggett
Sent: Friday, March 24, 2006 9:31 AM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] What happened to mx.utils.Deletage?

>Of course, as you illustrate, this will not work if you are calling
>multiple methods on myService
 
Any clues as to whether multicasts are in the spec for AS?
 
Thanks,
Rich

From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Sho Kuwamoto
Sent: 24 March 2006 17:25
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] What happened to mx.utils.Deletage?

Hi Chris.

Roughly speaking, you do something like this:

myService.someMethod(arg1, arg2);
myService.addEventListener("result", resultMethod);

Of course, as you illustrate, this will not work if you are calling
multiple methods on myService, because you need a way of figuring out
which method you are getting the result for. As far as I know, you need
to do some of your own plumbing to make this happen.

Here is one way to do it:

function initializeStuff() : void
{
      myService.addEventListener("result", resultHandler);
}

function doStuff() : void
{
      var call = myService.someMethod(arg1, arg2);
      call.resultHandler = actualResultHandler;
}

function resultHandler(event: ResultEvent) : void
{
      var call : Object = event.call;

      if (call.resultHandler != null)
      {
            call.resultHandler.call(null, event)
      }
}

function actualResultHandler(event: ResultEvent) : void
{
}

-Sho

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