request.setAttribute(InternalConstants.CONTENT_TYPE_ATTRIBUTE_NAME, contentType);
Page containerPage = cache.get(parameters.getContainingPageName());
ComponentPageElement element = containerPage.getComponentElementByNestedId(parameters.getNestedComponentId());
// In many cases, the triggered element is a Form that needs to be able to
// pass its event handler return values to the correct result processor.
// This is certainly the case for forms.
TrackableComponentEventCallback callback = new ComponentResultProcessorWrapper(interceptor);
environment.push(ComponentEventResultProcessor.class, interceptor);
environment.push(TrackableComponentEventCallback.class, callback);
boolean handled = element
.triggerContextEvent(parameters.getEventType(), parameters.getEventContext(), callback);
if (!handled)
throw new TapestryException(String.format("Request event '%s' (on component %s) was not handled; you must provide a matching event handler method in the component or in one of its containers.", parameters.getEventType(), element.getCompleteId()), element,
null);
environment.pop(TrackableComponentEventCallback.class);
environment.pop(ComponentEventResultProcessor.class);