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/*
* Copyright (c) 2008, 2011, 2012, 2015, 2016 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.util.container.delegate;
import java.util.Queue;
/**
* A default implementation of a {@link IContainerQueue container queue}.
*
* @author Eike Stepper
* @apiviz.exclude
*/
public class ContainerQueue<E> extends ContainerCollection<E> implements IContainerQueue<E>
{
public ContainerQueue(Queue<E> delegate)
{
super(delegate);
}
@Override
public Queue<E> getDelegate()
{
return (Queue<E>)super.getDelegate();
}
/**
* @category READ
*/
public E element()
{
return getDelegate().element();
}
/**
* @category WRITE
*/
public boolean offer(E o)
{
boolean modified = getDelegate().offer(o);
if (modified)
{
fireAddedEvent(o);
}
return modified;
}
/**
* @category READ
*/
public E peek()
{
return getDelegate().element();
}
/**
* @category WRITE
*/
public E poll()
{
E removed = getDelegate().poll();
if (removed != null)
{
fireRemovedEvent(removed);
}
return removed;
}
/**
* @category WRITE
*/
public E remove()
{
E removed = getDelegate().remove();
if (removed != null)
{
fireRemovedEvent(removed);
}
return removed;
}
}
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