| // Copyright 2006, 2007, 2008, 2009, 2010 The Apache Software Foundation |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package org.apache.tapestry5.internal.services; |
| |
| import java.io.IOException; |
| |
| import org.apache.tapestry5.TrackableComponentEventCallback; |
| import org.apache.tapestry5.internal.structure.ComponentPageElement; |
| import org.apache.tapestry5.internal.structure.Page; |
| import org.apache.tapestry5.ioc.annotations.Primary; |
| import org.apache.tapestry5.ioc.internal.util.TapestryException; |
| import org.apache.tapestry5.services.ComponentEventRequestHandler; |
| import org.apache.tapestry5.services.ComponentEventRequestParameters; |
| import org.apache.tapestry5.services.ComponentEventResultProcessor; |
| import org.apache.tapestry5.services.Environment; |
| import org.apache.tapestry5.services.Response; |
| import org.apache.tapestry5.services.Traditional; |
| |
| @SuppressWarnings("unchecked") |
| public class ComponentEventRequestHandlerImpl implements ComponentEventRequestHandler |
| { |
| private final ComponentEventResultProcessor resultProcessor; |
| |
| private final RequestPageCache cache; |
| |
| private final Response response; |
| |
| private final PageActivator pageActivator; |
| |
| private final ActionRenderResponseGenerator generator; |
| |
| private final Environment environment; |
| |
| public ComponentEventRequestHandlerImpl(@Traditional |
| @Primary |
| ComponentEventResultProcessor resultProcessor, |
| |
| RequestPageCache cache, Response response, |
| |
| PageActivator pageActivator, |
| |
| ActionRenderResponseGenerator generator, Environment environment) |
| { |
| this.resultProcessor = resultProcessor; |
| this.cache = cache; |
| this.response = response; |
| this.pageActivator = pageActivator; |
| this.generator = generator; |
| this.environment = environment; |
| } |
| |
| public void handle(ComponentEventRequestParameters parameters) throws IOException |
| { |
| Page activePage = cache.get(parameters.getActivePageName()); |
| |
| if (pageActivator.activatePage(activePage.getRootElement().getComponentResources(), parameters |
| .getPageActivationContext(), resultProcessor)) |
| return; |
| |
| Page containerPage = cache.get(parameters.getContainingPageName()); |
| |
| TrackableComponentEventCallback callback = new ComponentResultProcessorWrapper(resultProcessor); |
| |
| environment.push(ComponentEventResultProcessor.class, resultProcessor); |
| environment.push(TrackableComponentEventCallback.class, callback); |
| |
| ComponentPageElement element = containerPage.getComponentElementByNestedId(parameters.getNestedComponentId()); |
| |
| boolean handled = element |
| .triggerContextEvent(parameters.getEventType(), parameters.getEventContext(), callback); |
| |
| if (!handled) |
| throw new TapestryException(ServicesMessages.eventNotHandled(element, parameters.getEventType()), element, |
| null); |
| |
| environment.pop(TrackableComponentEventCallback.class); |
| environment.pop(ComponentEventResultProcessor.class); |
| |
| if (callback.isAborted()) |
| { |
| callback.rethrow(); |
| return; |
| } |
| |
| if (!response.isCommitted()) |
| generator.generateResponse(activePage); |
| } |
| } |