Sorry "component instanceof MicroSitePanel" should have read
"component instanceof IMyPanel"
On Mon, Jan 23, 2012 at 11:26 AM, Alec Swan <alecs...@gmail.com> wrote:
> 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 <adelb...@ciseonweb.it>
> 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<adelb...@ciseonweb.it>
>>> wrote:
>>>
>>
>>
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