Macromedia flex 2-migrating applications to flex 2 Manuel D’Utilisation

134

Behaviors

New events for effect classes

You can now associate event listeners with effects, rather than with effect targets. All effect 
classes now support the following event types:

effectStart

Dispatched when the effect starts playing. The 

type

 property of the event 

object for this event is set to 

EffectEvent.EFFECT_START

.

effectEnd

Dispatched after the effect stops playing, either when the effect finishes playing 

or when the effect has been interrupted by a call to the 

endEffect()

 method. The 

type

 

property of the event object for this event is set to 

EffectEvent.EFFECT_END

.

Every effect class that is a subclass of the TweenEffect class, such as the Fade and Move effects, 
supports the following events:

tweenStart

 Dispatched when the tween effect starts. The type property of the event object 

for this event is set to TweenEvent.TWEEN_START. 

tweenEnd

Dispatched when the tween effect ends. The 

type

 property of the event object 

for this event is set to 

TweenEvent.TWEEN_END

.

tweenUpdate

Dispatched every time a TweenEffect class calculates a new value. The 

type

 

property of the event object for this event is set to 

TweenEvent.TWEEN_UPDATE

.

Change to overriding the endEffect() method

You no longer have to call 

listener.onEffectEnd()

 in an override of the 

endEffect()

 

method. Now, the 

EffectInstance.endEffect()

 method calls the instance class’s 

endEffect()

 method, which calls the 

EffectInstance.finishEffect()

 method to 

dispatch the 

EffectEvent.END_EFFECT

 event and call 

listener.onEffectEnd()

.