Purpose of CurrentTarget and Target

[Noorul]

I was asked the following questions in interview

What is the currentTarget,Target in Flex

plz advice.

[Akki]

Hi Noorul,

They are two different properties associated with an event. Consider
the following scenario:

<s:Application>
<s:Panel>
<s:Button/>
</s:Panel>
</s:Application>

If an event is dispatched by the button it will go thru capture,
target and bubble phase and traverse as shown:

Capture Phase Target Bubble
Application -> Panel -> Button -> Panel->Application

The currentTarget will always refer to the component where event is
currently located while going thu this cycle. For example the
currentTarget(ct) and target(t)
will change as:
Capture Phase Target
Bubble
Application -> Panel -> Button -> Panel-
>Application
ct:Application Panel Button
Panel Application
t:Button Button Button
Button Button

So at target phase they will both be same.

Thanks,
Akhil Mittal

[bala subramanyam]

Hi Noorul,

display object which dispatches the event is event.target

display object which listens to the event is event.currentTarget

Regards

Balu

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[Priti Gupta]

current target and target-----

current target is that where you registered your listener and target is that where you dispatches your event.

[Janibasha Mca]

let us take you have a button in the panel .
the target is button that can not be change.
if you click on the panel then the current current target is panel.
the current target can change but target remains same.

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[Nitin Gopi]

Hi Noorul,

The current target always specifies to the object with which the eventlistener is attached.

The target is the object with dispatches the event.

For example

Suppose you have a button inside a panel. You add event listener to the panel. Then you click on the button.During event propagation the event will be listened which is associated with the panel. But since it was the button which dispatched the event, it is the target.

Whereas if you had clicked on the panel, then in this case the current target and target both are the same , the panel.

I hope that it proved useful to you. You can ask again if you want more clarification.

With Regards,

Nitin

On Mon, Feb 6, 2012 at 3:18 PM, Noorul <nooru...@gmail.com> wrote:

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[Akki]

Hi,

I have recently posted about events at the following URL:

http://flex4java.blogspot.com/
that will help you in clarifying most of the doubts. If you have any
suggestion/comments please share :)

Thanks,
Akhil

On Feb 7, 9:05 pm, Akki <contacttoak...@gmail.com> wrote:
> Hi Noorul,
>
> They are two different properties associated with an event. Consider
> the following scenario:
>
> <s:Application>
>    <s:Panel>
>       <s:Button/>
>    </s:Panel>
> </s:Application>
>

> If an event is dispatched by the button it will go thru capture,targetand bubble phase and traverse as shown:

>
> Capture Phase              Target          Bubble
> Application -> Panel ->   Button  ->     Panel->Application
>

> ThecurrentTargetwill always refer to the component where event is

> currently located while going thu this cycle. For example thecurrentTarget(ct) andtarget(t)
>  will change as:
> Capture Phase                                      Target
> Bubble
> Application                         -> Panel ->   Button  ->     Panel->Application
>
> ct:Application                          Panel       Button
> Panel   Application
> t:Button                                 Button       Button
> Button    Button
>

> So attargetphase they will both be same.