/*
* JBoss, Home of Professional Open Source
* Copyright 2011, Red Hat, Inc., and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* 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.jboss.seam.faces.event;
import java.util.List;
import javax.faces.event.AbortProcessingException;
import javax.faces.event.PreDestroyApplicationEvent;
import javax.faces.event.SystemEvent;
import javax.faces.event.SystemEventListener;
import org.jboss.solder.logging.Logger;
/**
* Provide CDI injection to SystemEventListener artifacts by delegating through this class.
*
* @author <a href="mailto:lincolnbaxter@gmail.com>Lincoln Baxter, III</a>
*/
public class DelegatingSystemEventListener extends AbstractListener<SystemEventListener> implements SystemEventListener {
private transient final Logger log = Logger.getLogger(DelegatingSystemEventListener.class);
@Override
public boolean isListenerForSource(final Object source) {
return true;
}
@Override
public void processEvent(final SystemEvent event) throws AbortProcessingException {
if (event instanceof PreDestroyApplicationEvent && !isBeanManagerAvailable()) {
log.info("BeanManager no longer available; Cannot notify CDI-managed listeners of "
+ PreDestroyApplicationEvent.class.getSimpleName());
return;
}
for (SystemEventListener l : getEventListeners()) {
if (l.isListenerForSource(event.getSource())) {
l.processEvent(event);
}
}
}
@SuppressWarnings("unchecked")
private List<SystemEventListener> getEventListeners() {
return getListeners(SystemEventBridge.class);
}
}