/*
* Copyright 2005 Joe Walker
*
* 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.directwebremoting.bayeux;
import java.util.List;
import javax.servlet.ServletContextAttributeEvent;
import javax.servlet.ServletContextAttributeListener;
import org.directwebremoting.Container;
import org.directwebremoting.dwrp.PlainCallHandler;
import org.directwebremoting.extend.ConverterManager;
import org.directwebremoting.extend.Remoter;
import org.directwebremoting.impl.StartupUtil;
import dojox.cometd.Bayeux;
/**
* @author Greg Wilkins [gregw at webtide dot com]
* @author Joe Walker [joe at getahead dot ltd dot uk]
*/
public class BayeuxServletContextAttributeListener implements ServletContextAttributeListener
{
/* (non-Javadoc)
* @see javax.servlet.ServletContextAttributeListener#attributeAdded(javax.servlet.ServletContextAttributeEvent)
*/
public void attributeAdded(ServletContextAttributeEvent scab)
{
synchronized (this)
{
if (bayeuxHandler == null && "dojox.cometd.bayeux".equals(scab.getName()))
{
Bayeux bayeux = (Bayeux) scab.getValue();
bayeuxHandler = new BayeuxClient(bayeux);
if (remoter != null)
{
bayeuxHandler.setRemoter(remoter);
}
if (converterManager != null)
{
bayeuxHandler.setConverterManager(converterManager);
}
if (plainCallHandler != null)
{
bayeuxHandler.setPlainCallHandler(plainCallHandler);
}
}
if (StartupUtil.ATTRIBUTE_CONTAINER_LIST.equals(scab.getName()))
{
@SuppressWarnings("unchecked")
List<Container> containers = (List<Container>) scab.getValue();
for (Container container: containers)
{
Remoter r = container.getBean(Remoter.class);
if (r != null)
{
remoter = r;
if (bayeuxHandler != null)
{
bayeuxHandler.setRemoter(remoter);
}
}
ConverterManager c = container.getBean(ConverterManager.class);
if (c != null)
{
converterManager = c;
if (bayeuxHandler != null)
{
bayeuxHandler.setConverterManager(converterManager);
}
}
PlainCallHandler p = container.getBean(PlainCallHandler.class);
if (p != null)
{
this.plainCallHandler = p;
if (bayeuxHandler != null)
{
bayeuxHandler.setPlainCallHandler(plainCallHandler);
}
}
}
}
}
}
/* (non-Javadoc)
* @see javax.servlet.ServletContextAttributeListener#attributeRemoved(javax.servlet.ServletContextAttributeEvent)
*/
public void attributeRemoved(ServletContextAttributeEvent scab)
{
}
/* (non-Javadoc)
* @see javax.servlet.ServletContextAttributeListener#attributeReplaced(javax.servlet.ServletContextAttributeEvent)
*/
public void attributeReplaced(ServletContextAttributeEvent scab)
{
}
private BayeuxClient bayeuxHandler;
private Remoter remoter;
private ConverterManager converterManager;
private PlainCallHandler plainCallHandler;
}