 | | | Event Dispatcher between classes | Event Dispatcher between classes 2004-03-16 - By flashcoder
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Maybe jens doesn?t want to extend anything!
Use it within classes like so >>
/************************************
import mx.events.EventDispatcher;
//
class MyClass {
// #function references
var dispatchEvent:Function;
var addEventListener:Function;
var removeEventListener:Function;
//
function MyClass() {
EventDispatcher.initialize(this);
// you now have the above methods usable
}
}
/******************************************
// OR!!
import mx.events.EventDispatcher;
//
class MyClass {
function dispatchEvent() {
// intentionally empty!!!!
}
function addEventListener() {
// intentionally empty!!!!
}
function removeEventListener() {
// intentionally empty!!!!
}
//
function MyClass() {
EventDispatcher.initialize(object_to_initialise);
}
}
-- --Original Message-- --
From: Pranav Verma [mailto:pranavv@(protected)]
Sent: 16 March 2004 07:35
To: flashcoders@(protected)
Subject: RE: [Flashcoders] Event Dispatcher between classes
u r just missing one thing.... your dispatcher classs shud extend
UIComponent! so it will be like this
import mx.core.UIComponent
class focuscast.core.Databaseproxy extends mx.core.UIComponent{
thats it.
You dont even need to import EventDispatcher class or initialze it
(EventDispatcher.initialize(this))
they all come free ;) with UIComponent class... so just extend UIComponent
and u r all set:)
Pranav.
> -- --Original Message-- --
> From: Jens L?ffler [mailto:jensloeffler@(protected)]
> Sent: Tuesday, March 16, 2004 3:12 AM
> To: flashcoders@(protected)
> Subject: Re: [Flashcoders] Event Dispatcher between classes
>
>
> Yes, I think that's within my framework. But I haven't figured out how
> to connect two classes using the event modell.
>
> This is my example:
> How can I make it work?
>
> Sender:
>
> import mx.events.EventDispatcher;
> class focuscast.core.Databaseproxy {
> public function Databaseproxy() {
> EventDispatcher.initialize(this);
> }
> public function loadClients():Array {
> var clientarray:Array = new Array();
> clientdata = new LoadVars();
>
> clientdata.load("http://internal/database.php?action=loadClients");
> clientdata.onLoad = clientdata_loaded;
> return clientarray;
> }
> public function clientdata_loaded() {
> trace("dispatching");
> var responseobj:Object = {};
> responseobj.type="onUpdateClient";
> responseobj.target=this;
> responseobj.data=clientarray;
> dispatchEvent(responseobj);
> }
> }
>
>
>
> Receiver:
>
> class focuscast.core.Datahandler extends MovieClip {
> public var databaseproxy;
> function Datahandler() {
> databaseproxy = new Databaseproxy();
>
> databaseproxy.addEventListener("onUpdateClient", this);
> }
>
> function onUpdateClient() {
> trace("received");
> }
> }
>
>
> >From: "Erik Bianchi" <erikbianchi@(protected)>
> >Reply-To: flashcoders@(protected)
> >To: <flashcoders@(protected)>
> >Subject: Re: [Flashcoders] Event Dispatcher between classes
> >Date: Mon, 15 Mar 2004 16:18:19 -0500
> >
> >Take a look at using the MVP design pattern. Sounds like you
> just need to
> >work on your architecture a bit and this pattern will help
> resolve this for
> >you.
> >
> >Basically a Presenter would be responsible for initializing your
> >components/classes and hooking them together. When using MVP that
> >relationship would be hooking the model and view together.
> The Model being
> >the broadcaster(subject) and the view listening to the
> broadcast(observer).
> >
> >hope that helps.
> >
> >-erik
> >-- -- Original Message -- --
> >From: "Jens L?ffler" <jensloeffler@(protected)>
> >To: <flashcoders@(protected)>
> >Sent: Monday, March 15, 2004 4:01 PM
> >Subject: [Flashcoders] Event Dispatcher between classes
> >
> >
> > > Hi,
> > >
> > > does anyone know what's the best way to use the Event
> Dispatcher between
> >two
> > > classes to send messages? I've initalized the sending class in the
> > > constructor with eventdispacher, and extended the
> listening class to a
> > > movieclip, so a public function can be used to receive
> the message, but
> >it's
> > > doesn't really work. Is there any standard way? (I don't
> want to use
> >code
> > > outside the classes)
> > >
> > > Jens
> > >
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