RE: [flexcoders] Debugging Event Bubbling

[Tracy Spratt]

Bubbling works generally.  Simplify until it does, then re-add your
complexity til it breaks.

 

  _____  

From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On
Behalf Of valkyrie77
Sent: Sunday, March 08, 2009 1:52 PM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Debugging Event Bubbling

 

Hi Folks,

I'm currently working on a twitter AIR client using the twitterscript AS3
library and having some issues with bubbling custom events that are created
by nested "classses" back to the main application.

I've architected so that the main application (A) spawns a new timeline
window (B) for every twitter account a user may have. I have a Comm class
(C) i use as a DAO layer to decouple the twitterscript custom events from my
framework (in case i switch to a different as3 API library)

My custom event class looks like this 

package com.kubeworks.events
{
import flash.events.Event;

public class TweetCommEvent extends Event
{
public static const TIMELINE_BACK:String = "timelineBack";
public static const STATUS_BACK:String = "statusBack";
public static const USER_INFO_BACK:String = "userInfoBack";
public static const RATE_LIMIT_STATUS:String = "rateLimitBack";
public var data : Object = new Object ();

public function TweetCommEvent(type:String, bubbles:Boolean=true,
cancelable:Boolean=false)
{
super(type, bubbles, cancelable);
}

override public function clone():Event {
return new PreferencePaneEvent(type, bubbles, cancelable);
}

}
}

My Comm Class goes something like
package com.kubeworks.data
{
// Twitter API calls
import com.kubeworks.events.TweetCommEvent;

import flash.events.Event;
import flash.events.EventDispatcher;
import flash.utils.*;

import mx.utils.ObjectUtil;

import twitter.api.Twitter;
import twitter.api.events.TwitterEvent;

public class TweetComm extends EventDispatcher
{

private var username:String;
private var password:String;

private var _twitterClient:Twitter;

// Constructor
public function TweetComm(usern:String, pass:String)
{
// Initialize Twitter Event Listeners
_twitterClient = new Twitter();
_twitterClient.addEventListener(Event.ACTIVATE,
twitterClientActivateHandler);
_twitterClient.addEventListener(Event.DEACTIVATE, twitterClientDeactivate);
_twitterClient.addEventListener(TwitterEvent.ON_FRIENDS_TIMELINE_RESULT,
twitterTimelineBack);
_twitterClient.addEventListener(TwitterEvent.ON_SET_STATUS,
twitterStatusBack);
_twitterClient.addEventListener(TwitterEvent.ON_SHOW_INFO, twitterUserBack);
_twitterClient.addEventListener(TwitterEvent.ON_RATE_LIMIT_STATUS,
twitterRateLimitBackHandler);


// Do stuff
setLogin(usern, pass);
setAuth();
}

and within that class i'm re-dispatching like:

private function twitterRateLimitBackHandler(event:TwitterEvent):void {
var eventObj:TweetCommEvent = new
TweetCommEvent(TweetCommEvent.RATE_LIMIT_STATUS, true);
eventObj.data = event.data;
dispatchEvent(eventObj);
trace(">>twitterRateLimitBackHandler");
trace(ObjectUtil.toString(event));
trace("<<twitterRateLimitBackHandler");
trace(ObjectUtil.toString(eventObj));
}

I've set the bubbling to true. However in my main application this
EventListener never fires

systemManager.addEventListener(TweetCommEvent.RATE_LIMIT_STATUS,
onRateLimitHandler);

Any help would be greatly appreciated as i am out ideas and have exausted
google and my flex friends.

Thanks,
Sean