[Flashcoders] EventDispatcher.removeEventListener

[Simen Brekken]

I'm having some issues with EventDispatcher, specifically removeEventListener
and delegates. The problem arises when I want to remove an existing event
listener but the target function no longer exists, is there any way to remove an
event listener without specifying the callback function?

On a side note, are there any improved alternatives to EventDispatcher?

--
Regards,
Simen Brekken


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Re: [Flashcoders] EventDispatcher.removeEventListener

[Ramon Tayag]

yup, check out gDispatcher by Mr. Skinner.  You can google it.

On 2/6/06, Simen Brekken [EMAIL PROTECTED] wrote:
 I'm having some issues with EventDispatcher, specifically removeEventListener
 and delegates. The problem arises when I want to remove an existing event
 listener but the target function no longer exists, is there any way to remove 
 an
 event listener without specifying the callback function?

 On a side note, are there any improved alternatives to EventDispatcher?

 --
 Regards,
 Simen Brekken


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 Flashcoders mailing list
 Flashcoders@chattyfig.figleaf.com
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--
Ramon Miguel M. Tayag
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Re: [Flashcoders] EventDispatcher.removeEventListener

[blists]

You can also remove a listener from an object using the __q_click array of 
the object the listener is on.


Add a listener like this:
cancel_btn.addEventListener(click, Delegate.create(this, this.somefunction));

And remove that listener like this:
cancel_btn.removeEventListener(click, cancel_btn.__q_click[0]);

If you had multiple listeners, you might be able to loop over the __q_click 
array and do a comparison but I'm not sure how.


Brookd


At 12:43 PM 2/6/2006, you wrote:

What I've figured out with removeEventListener and Delegate is you can
remove the listener on dispatchEvent like so:

private function someEventHandler (e:Object) {
var target = e.target;
if (removeHandler) target.removeEventListener(event, 
arguments.caller);

}

Of course this only works after removeHandler is set to true and the
event is dispatched once again. Yet, is some instances its enough.
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Re: [Flashcoders] EventDispatcher.removeEventListener

[Ian Thomas]

Or perhaps a bit simpler and safer:

var myFunction:Function=Delegate.create(this,somefunction);

cancel_btn.addEventListener(click,myFunction);

and later:
cancel_btn.removeEventListener(click,myFunction);

You could always store myFunction as a property...

Ian

On 2/6/06, blists [EMAIL PROTECTED] wrote:

 You can also remove a listener from an object using the __q_click array of
 the object the listener is on.

 Add a listener like this:
 cancel_btn.addEventListener(click, Delegate.create(this,
 this.somefunction));

 And remove that listener like this:
 cancel_btn.removeEventListener(click, cancel_btn.__q_click[0]);

 If you had multiple listeners, you might be able to loop over the
 __q_click
 array and do a comparison but I'm not sure how.

 Brookd


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