It looks like your code will add an IHeaderContributor to EVERY
component once IComponentOnBeforeRenderListener finds an instance of
IMyPanel component. Which is not what I need.
I was hoping to do something like this:
addPostComponentOnBeforeRenderListener(new IComponentOnBeforeRenderListener() {
@Override
public void onBeforeRender(Component component) {
if (component instanceof MicroSitePanel) {
component.add(new XXXBehavior() {
// somehow fire Javascript when component
renders, e.g. onComponentTag???
});
}
}
});
So, my question is what XXXBehavior should I use and how to fire
Javascript when component renders?
Thanks,
Alec
On Mon, Jan 23, 2012 at 10:09 AM, Andrea Del Bene <[email protected]> wrote:
> Your idea of using PostComponentOnBeforeRenderListener sounds good to me,
> but I didn't understand exactly what you do with this kind of listener.
>
> Once you have checked if component implements IMyPanel, I would call
> Application.getHeaderContributorListenerCollection() and I would add a
> header contributor which renders your JavaScript as I suggested in the
> previous mail.
> The code of you IComponentOnBeforeRenderListener should be something like:
>
> .... implements IComponentOnBeforeRenderListener{
>
> onBeforeRender(Component component) {
> if(component instanceof IMyPanel)
>
> Application.get().getHeaderContributorListenerCollection().add(new
> IHeaderContributor(){
> public void renderHead( IHeaderResponse
> response)
> {
>
> response.renderOnLoadJavaScript("<...your JavaScript...>");
> }
> });
>
> }
> }
>>
>> That's a a good idea but unfortunately my panels extend disjoint class
>> hierarchies and I can only group them using interfaces.
>>
>> Any thoughts on how I can use Application listeners to accomplish this?
>>
>> Thanks,
>>
>> Alec
>>
>> On Mon, Jan 23, 2012 at 3:41 AM, Andrea Del Bene<[email protected]>
>> wrote:
>>
>
>
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