Introduction to the signals Framework (ii) Advanced events __ Frame

Note: This article refers to a introduction to AS3 signals written, but not translated, there is an increase in the deletion. Part I: Introduction to the signals Framework (i) Basic Usage Part III: Introduction to the signals Framework (iii) native events

Perhaps you are now reminded of the benefits of AS3 built-in event framework, and you want to use Currenttarget. or want to support bubbling. Ok,signals can also satisfy your changeable heart ... (seems to be my own changeable ˇ^ˇ) Advanced Events

You can use Deluxesignal to achieve more advanced event delivery. Or based on the example of the alarm clock to modify the original alarmclock in the signal to deluxsignal:

[Alarmclock.as]? View Code ACTIONSCRIPT

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function AlarmClock () { //passes itself as a reference to deluxesignal, while increasing genericevent's delivery new deluxesignal (this, GenericEvent, Date); var alarm:deluxesignal; function ring (): void { Alarm.dispatch (newnew Date ()); }

Modify the processor function in the wakeup.as to allow it to accept the 2 parameters passed.

[Wakeup.as]? View Code ACTIONSCRIPT

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function handler_ring ($evt: genericevent, $date:D ate): void { trace (' Currenttarget: ', $ Evt.currenttarget); Trace (' Target: ', $evt. Target); Trace (' Signal: ', $evt. signal); Trace (' Get up ... Also do not look at the time: ' + $date. toString ());

The genericevent that appear here, not inherit from Flash.events.Event, but realize signals own ievent interface, have nothing to do with AS3 event mechanism. Take a name that looks like a brother, is to facilitate everyone to understand it. The Currenttarget and target attributes provided by it are also provided by the ievent itself.

After you run the modified example, you can see the following output:

[Trace] Currenttarget: [Object AlarmClock]
[Trace] Target: [Object AlarmClock]
[Trace] Signal: [Object deluxesignal]
[Trace] got up ... Also do not look at the time: Mon 17:07:16 gmt+0800 2012

Now, is it possible to "do whatever you want" to Currenttarget? Bubbling Events

Signals is as bubbling as it is, and does not depend on the AS3 event mechanism. Of course, the objects that send and receive bubbling events must be in the display list.

In order for AlarmClock to be added to the display list, we let AlarmClock inherit sprite. Throwing bubbling events is very simple, simply by passing the true argument while instantiating the genericevent. Look at the modified part of the AlarmClock class:

[Alarmclock.as]? View Code ACTIONSCRIPT

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class AlarmClock extends Sprite { function ring (): void { alarm.dispatch (new GenericEvent (truenew Date ()); }

The class that receives the event must implement the Ibubbleeventhandler interface to handle the bubbling event in oneventbubbled. Also, add the \_alarm instance to the display list.

To facilitate viewing of the bubbling effect, you can comment out the addonce line and receive only bubbling events.

[Wakeup.as]? View Code ACTIONSCRIPT

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public class Wakeup extends Sprite implements Ibubbleeventhandler {public function Wakeup () {_alarm = new Alarmclo CK (); AddChild (_alarm); _alarm.alarm.addonce (handler_ring); _alarm.ring (); }   Public function oneventbubbled ($evt: IEvent