/**
* <copyright>
*
* Copyright (c) 2002-2006 IBM Corporation 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:
* IBM - Initial API and implementation
*
* </copyright>
*
* $Id: NotificationChainImpl.java,v 1.4 2007/06/12 20:56:17 emerks Exp $
*/
package org.eclipse.emf.common.notify.impl;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.notify.NotificationChain;
import org.eclipse.emf.common.notify.Notifier;
import org.eclipse.emf.common.util.BasicEList;
/**
* A list that acts as a notification chain.
*/
public class NotificationChainImpl extends BasicEList<Notification> implements NotificationChain
{
private static final long serialVersionUID = 1L;
/**
* Creates an empty instance.
*/
public NotificationChainImpl()
{
super();
}
/**
* Creates an empty instance with a given capacity.
* @param initialCapacity the initial capacity of the list before it must grow.
*/
public NotificationChainImpl(int initialCapacity)
{
super(initialCapacity);
}
/**
* Returns new data storage of type {@link Notification}[].
* @return new data storage.
*/
@Override
protected Object [] newData(int capacity)
{
return new Notification [capacity];
}
/**
* Adds or merges a new notification.
* @param newNotification a notification.
* @return <code>true</code> when the notification is added and <code>false</code> when it is merged.
*/
@Override
public boolean add(Notification newNotification)
{
if (newNotification == null)
{
return false;
}
else
{
for (int i = 0; i < size; ++i)
{
Notification notification = (Notification)data[i];
if (notification.merge(newNotification))
{
return false;
}
}
return super.add(newNotification);
}
}
public void dispatch()
{
for (int i = 0; i < size; ++i)
{
Notification notification = (Notification)data[i];
dispatch(notification);
}
}
/**
* Dispatches the notification to its notifier.
*/
protected void dispatch(Notification notification)
{
Object notifier = notification.getNotifier();
if (notifier != null && notification.getEventType() != -1)
{
((Notifier)notifier).eNotify(notification);
}
}
}