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/***************************************************************************
* Copyright (c) 2004 - 2009 Eike Stepper (Berlin, Germany) and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Eike Stepper - initial API and implementation
**************************************************************************/
package org.eclipse.net4j.buddies.internal.common;
import org.eclipse.net4j.buddies.common.IBuddy;
import org.eclipse.net4j.buddies.common.IBuddyContainer;
import org.eclipse.net4j.util.container.IContainerDelta;
import org.eclipse.net4j.util.container.SingleDeltaContainerEvent;
import org.eclipse.net4j.util.event.IEvent;
import org.eclipse.net4j.util.event.IListener;
import org.eclipse.net4j.util.lifecycle.ILifecycleEvent;
import org.eclipse.net4j.util.lifecycle.Lifecycle;
import org.eclipse.net4j.util.lifecycle.LifecycleEvent;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
/**
* @author Eike Stepper
*/
public class BuddyContainer extends Lifecycle implements IBuddyContainer, IListener
{
private Map<String, IBuddy> buddies = new HashMap<String, IBuddy>();
public BuddyContainer(Collection<IBuddy> buddies)
{
if (buddies != null)
{
for (IBuddy buddy : buddies)
{
this.buddies.put(buddy.getUserID(), buddy);
buddy.addListener(this);
}
}
}
public BuddyContainer()
{
}
public boolean addBuddy(IBuddy buddy)
{
String userID = buddy.getUserID();
synchronized (buddies)
{
if (!buddies.containsKey(userID))
{
buddies.put(userID, buddy);
fireEvent(new SingleDeltaContainerEvent<IBuddy>(this, buddy, IContainerDelta.Kind.ADDED));
buddy.addListener(this);
return true;
}
}
return false;
}
public IBuddy removeBuddy(String userID)
{
IBuddy buddy;
synchronized (buddies)
{
buddy = buddies.remove(userID);
}
if (buddy != null)
{
buddy.removeListener(this);
fireEvent(new SingleDeltaContainerEvent<IBuddy>(this, buddy, IContainerDelta.Kind.REMOVED));
}
return buddy;
}
public IBuddy[] getBuddies()
{
synchronized (buddies)
{
return buddies.values().toArray(new IBuddy[buddies.size()]);
}
}
public IBuddy getBuddy(String userID)
{
synchronized (buddies)
{
return buddies.get(userID);
}
}
public IBuddy[] getElements()
{
return getBuddies();
}
public boolean isEmpty()
{
synchronized (buddies)
{
return buddies.isEmpty();
}
}
public void notifyEvent(IEvent event)
{
if (event.getSource() instanceof IBuddy)
{
notifyBuddyEvent(event);
if (event instanceof LifecycleEvent)
{
LifecycleEvent e = (LifecycleEvent)event;
if (e.getKind() == ILifecycleEvent.Kind.DEACTIVATED)
{
removeBuddy(((IBuddy)e.getSource()).getUserID());
}
}
}
}
protected void notifyBuddyEvent(IEvent event)
{
}
@Override
protected void doDeactivate() throws Exception
{
for (IBuddy buddy : getBuddies())
{
buddy.removeListener(this);
}
super.doDeactivate();
}
}
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