// Copyright 2006, 2007, 2008 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.tapestry.internal.services;
import org.apache.tapestry.TapestryConstants;
import org.apache.tapestry.internal.structure.ComponentPageElement;
import org.apache.tapestry.internal.structure.Page;
import org.apache.tapestry.services.*;
import java.io.IOException;
public class ComponentEventRequestHandlerImpl implements ComponentEventRequestHandler
{
private final ComponentEventResultProcessor _resultProcessor;
private final RequestPageCache _cache;
private final Response _response;
private final ActionRenderResponseGenerator _generator;
public ComponentEventRequestHandlerImpl(@Traditional ComponentEventResultProcessor resultProcessor,
RequestPageCache cache, Response response,
ActionRenderResponseGenerator generator)
{
_resultProcessor = resultProcessor;
_cache = cache;
_response = response;
_generator = generator;
}
public void handle(ComponentEventRequestParameters parameters) throws IOException
{
Page activePage = _cache.get(parameters.getActivePageName());
ComponentResultProcessorWrapper callback = new ComponentResultProcessorWrapper(_resultProcessor);
// If activating the page returns a "navigational result", then don't trigger the action
// on the component.
activePage.getRootElement().triggerContextEvent(TapestryConstants.ACTIVATE_EVENT,
parameters.getPageActivationContext(), callback);
if (callback.isAborted()) return;
Page containerPage = _cache.get(parameters.getContainingPageName());
ComponentPageElement element = containerPage.getComponentElementByNestedId(parameters.getNestedComponentId());
element.triggerContextEvent(parameters.getEventType(), parameters.getEventContext(), callback);
if (callback.isAborted()) return;
if (!_response.isCommitted()) _generator.generateResponse(activePage);
}
}