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Thread: ChannelBroadcaster example
ChannelBroadcaster example
user name
 2006-12-08 15:15:48 

  


  

    

Hello Cédric 
!


 


> Is 
there a way to broadcast an event to all channels ? 
Not at this time, 
but it could be implemented ... any real particular needs targeted with this 
implementation ?


 


> In your example 'this' will receive the 'click' event 3 times from the 
same source, is there a way to know witch channel the event came from ? 


No, but I can update addEventListener method like shown below to provide 
auto-delegate factory.


 


public function addEventListener( type : String, o 
: Object, oChannel : String ) : Void
 ;{
  var eb : 
EventBroadcaster = getChannelDispatcher( oChannel );
  var args : 
Array = arguments.splice( 0, 2 ).concat( arguments.splice( 3 ) 
);
  eb.addEventListener.apply( eb, args );
 }


 


Another solution would be to extend BasicEvent 
to have getChannel() accessor.


But indeed, I think that won't be a good 
implementation, coz you'd need to clone your events, give the responsibility to 
ChannelBroadcaster to inject channel information, and last but not least you'd 
lose polymorphism with inherited classes from BasicEvent.


So that's a bad idea at all.


 


> Why as much secret ? ^^


It's not really so secret, I just don't wanna tease about features that 
won't be available at the end of this project. ;)


 


francis


 



  
----- Original Message ----- 

  
  
  
Sent: Sunday, November 26, 2006 2:48 
  PM

  
Subject: Re: [Pixlib] ChannelBroadcaster 
  example

  

Hi Francis, 

  
Pixlib type="cite">
    
    

    
Hello guys,

    
 

    
that's a concept I made 
    for LowRA.

    
It's in pixlib now coz I need it for the 
    upcoming extension based on IoC pattern.

    
 

    
Here's a quick example to illustrate tv 
    channels metaphor:

    
 

    
var cb : ChannelBroadcaster = new 
    ChannelBroadcaster();
cb.addEventListener( "click", this, "gameone" 
    );
cb.addEventListener( "click", this, "mtv" );
cb.addListener( this, 
    "france4" );
cb.broadcastEvent( new StringEvent( new EventType("click"), 
    "gameone" ), "gameone" );
cb.broadcastEvent( new StringEvent( new 
    EventType("click"), "mtv" ), "mtv" );
cb.broadcastEvent( new StringEvent( 
    new EventType("click"), "france4" ), "france4" ); 
  
Thanks for the example 

  
Pixlib type="cite">
    
I didn't see this event pattern somewhere at 
    this time, did you ?
We've built something 
  approaching for our Drag&Drop engine within the Blob, each object can 
  interact in several 
channel, in order to have a really flexible and 
  powerful interactivity. But your implementation is so much reusable , I 
  think I
will play a lot with it ;).

Some questions : 

- Is 
  there a way to broadcast an event to all channels ? 
- In your example 
  'this' will receive the 'click' event 3 times from the same source, is there a 
  way to know witch channel the event came from ? 

  
Pixlib type="cite">
    
I got this idea from my multi-users work, I 
    like a lot room communication concept.

    
I hope you'll like it, and I'm pretty sure 
    you'll enjoy it in the scope of the release of pixlib 
  extension.
Why as much secret ? ^^

Cédric

  

  


  
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