/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.myfaces.extensions.cdi.jsf.impl.listener.phase;
import org.apache.myfaces.extensions.cdi.core.api.provider.BeanManagerProvider;
import org.apache.myfaces.extensions.cdi.core.api.scope.conversation.config.WindowContextConfig;
import org.apache.myfaces.extensions.cdi.core.impl.util.ClassDeactivation;
import org.apache.myfaces.extensions.cdi.jsf.impl.listener.request.BeforeAfterFacesRequestBroadcaster;
import org.apache.myfaces.extensions.cdi.jsf.impl.listener.startup.ApplicationStartupBroadcaster;
import org.apache.myfaces.extensions.cdi.jsf.impl.scope.conversation.spi.EditableWindowContextManager;
import org.apache.myfaces.extensions.cdi.jsf.impl.scope.conversation.spi.WindowHandler;
import org.apache.myfaces.extensions.cdi.jsf.impl.scope.conversation.spi.LifecycleAwareWindowHandler;
import org.apache.myfaces.extensions.cdi.core.impl.util.CodiUtils;
import org.apache.myfaces.extensions.cdi.jsf.impl.util.ConversationRequiredUtils;
import org.apache.myfaces.extensions.cdi.jsf.impl.util.ConversationUtils;
import javax.faces.lifecycle.Lifecycle;
import javax.faces.event.PhaseListener;
import javax.faces.context.FacesContext;
import java.util.List;
/**
* intermediate workaround for
* {@link org.apache.myfaces.extensions.cdi.jsf.impl.util.JsfUtils#registerPhaseListener}
*/
class CodiLifecycleWrapper extends Lifecycle
{
private Lifecycle wrapped;
private BeforeAfterFacesRequestBroadcaster beforeAfterFacesRequestBroadcaster;
private volatile Boolean initialized;
private volatile Boolean applicationInitialized;
CodiLifecycleWrapper(Lifecycle wrapped, List<PhaseListener> phaseListeners)
{
this.wrapped = wrapped;
for (PhaseListener phaseListener : phaseListeners)
{
this.wrapped.addPhaseListener(phaseListener);
}
}
/**
* {@inheritDoc}
*/
public void addPhaseListener(PhaseListener phaseListener)
{
wrapped.addPhaseListener(phaseListener);
}
/**
* Broadcasts {@link org.apache.myfaces.extensions.cdi.core.api.startup.event.StartupEvent} and
* {@link org.apache.myfaces.extensions.cdi.jsf.api.listener.request.BeforeFacesRequest} btw.
* {@link org.apache.myfaces.extensions.cdi.jsf.api.listener.request.AfterFacesRequest}
* <p/>
* {@inheritDoc}
*/
public void execute(FacesContext facesContext)
{
broadcastApplicationStartupBroadcaster();
broadcastBeforeFacesRequestEvent(facesContext);
WindowHandler windowHandler = CodiUtils.getContextualReferenceByClass(WindowHandler.class);
if (windowHandler instanceof LifecycleAwareWindowHandler)
{
((LifecycleAwareWindowHandler) windowHandler).beforeLifecycleExecute(facesContext);
if (facesContext.getResponseComplete())
{
// no further processing
return;
}
}
wrapped.execute(facesContext);
}
/**
* {@inheritDoc}
*/
public PhaseListener[] getPhaseListeners()
{
return this.wrapped.getPhaseListeners();
}
/**
* {@inheritDoc}
*/
public void removePhaseListener(PhaseListener phaseListener)
{
wrapped.removePhaseListener(phaseListener);
}
/**
* Performs cleanup tasks after the rendering process
* <p/>
* {@inheritDoc}
*/
public void render(FacesContext facesContext)
{
//TODO avoid ContextNotActiveException - details:
//TODO due to mojarra & weld issues (of some version) we might have to check if the context(s) are active
ConversationRequiredUtils.ensureExistingConversation(facesContext);
wrapped.render(facesContext);
ConversationUtils.postRenderCleanup(facesContext);
}
private void broadcastApplicationStartupBroadcaster()
{
//just an !additional! check to improve the performance
if (applicationInitialized == null)
{
initApplication();
}
}
private synchronized void initApplication()
{
if (applicationInitialized == null)
{
applicationInitialized = true;
ApplicationStartupBroadcaster applicationStartupBroadcaster =
CodiUtils.getContextualReferenceByClass(ApplicationStartupBroadcaster.class);
applicationStartupBroadcaster.broadcastStartupEvent();
}
}
private void broadcastBeforeFacesRequestEvent(FacesContext facesContext)
{
lazyInit();
if (this.beforeAfterFacesRequestBroadcaster != null)
{
BeanManagerProvider beanManagerProvider = BeanManagerProvider.getInstance();
EditableWindowContextManager windowContextManager =
beanManagerProvider.getContextualReference(EditableWindowContextManager.class);
WindowHandler windowHandler =
beanManagerProvider.getContextualReference(WindowHandler.class);
WindowContextConfig windowContextConfig =
beanManagerProvider.getContextualReference(WindowContextConfig.class);
ConversationUtils.tryToRestoreTheWindowIdEagerly(facesContext,
windowContextManager, windowHandler, windowContextConfig);
this.beforeAfterFacesRequestBroadcaster.broadcastBeforeFacesRequestEvent(facesContext);
}
}
private void lazyInit()
{
if (this.initialized == null)
{
init();
}
}
private synchronized void init()
{
// switch into paranoia mode
if (this.initialized == null)
{
if (ClassDeactivation.isClassActivated(BeforeAfterFacesRequestBroadcaster.class))
{
this.beforeAfterFacesRequestBroadcaster =
CodiUtils.getContextualReferenceByClass(BeforeAfterFacesRequestBroadcaster.class);
}
this.initialized = true;
}
}
}