Many thanks for the replies.
Now I see how can this be done with onLoad(), and thanks for cofirmation
about it beeing reference related.
Thomas why is a static Event bus bad ?
I had all my "MyApp.java" non static a while ago, with all the
model/params/loggers/event bus and other things inside. But as the app
grows it seems to me a hassle to force all my classes to have the "myApp"
attribute, so I just made MyApp static. I guess I'm completly wrong ? :)
Note : I'm not using any standard MVP but a home-made "Model - UI" and no
GIN either.
Le lundi 4 mars 2013 10:57:26 UTC+1, Thomas Broyer a écrit :
>
>
>
> On Monday, March 4, 2013 10:31:21 AM UTC+1, Martones wrote:
>>
>> Hey everyone,
>>
>> I noticed that my widget still listens to events from EventBus event
>> after I remove them from the DOM and after I clear all my references to
>> them. I was thinking if this was because of the EventBus bus handler the
>> widget has. Or I am missing something !
>>
>> Anyway here is a simplified test illustrating this. The Event i'm using
>> is a basic custom event and the Window.alert is there just to make sure the
>> event is received.
>>
>> class TestWidget extends Composite {
>> public TestWidget(final int id) {
>> // register to event
>> EVENT_BUS.addHandler(UpdateDataEvent.TYPE, new UpdateDataEventHandler() {
>>
>
> From now on, the event bus has a reference on an UpdateDataEventHandler,
> which itself –being an anonymous, hence non-static, class– has a reference
> on the TestWidget, so the event bus has a reference on the widget.
>
> When you want to "destroy" the widget, you then have to remove that
> handler.
> It's generally a good idea to register/unregister from within the
> onLoad/onUnload methods of the widget, but if you want the widget to
> receive events even when not attached, then you have to provide an explicit
> "tear down" method so it unregisters all handlers from the event bus.
>
> (btw: oh wow, a static event bus?)
>
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