Hi
Since not handled event are considered as error, an exception is thrown when
event is not handled. I think you can catch it in a ComponentEventRequestFilter
instance.
Take a look ComponentEventRequestHandlerImpl, following code are calling the
event on requested Component and Event :
boolean handled = element.triggerContextEvent(parameters.getEventType(),
parameters.getEventContext(),
callback);
if (!handled)
throw new TapestryException(ServicesMessages.eventNotHandled(element,
parameters.getEventType()), element,
null);
I Hope this helps,
Christophe.
-----Message d'origine-----
De : Andreas Pardeike [mailto:fsys....@gmail.com]
Envoyé : lundi 28 septembre 2009 15:28
À : Tapestry users
Objet : Event bubbling - how to implement a top level catch-all target
Hi,
My application uses a base class that catches all events that are
not handled by a component or a page on the way up.
At first, I tried to write the handler in my layout component but
since its not the top of the hierarchy, I had to create a base class
that every page extends. There, I have my generic event handler
and it works fine.
But I don't like the concept that all my pages have to extend
that base class and here comes my question:
Is there any other way to configure Tapestry 5.1 so that unhandled
events get processed in a generic way (like a custom dispatcher)?
If possible, it would make my event handling so much better.
Regards,
Andreas Pardeike
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