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/*
* Copyright (c) 2012 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.collection;
import java.util.Iterator;
import java.util.ListIterator;
/**
* @author Eike Stepper
* @since 3.3
*/
public class BidirectionalIterator<T> implements Iterator<T>
{
private final ListIterator<T> delegate;
private boolean backward;
public BidirectionalIterator(ListIterator<T> delegate, boolean backward)
{
this.delegate = delegate;
this.backward = backward;
}
public BidirectionalIterator(ListIterator<T> delegate)
{
this(delegate, false);
}
public ListIterator<T> getDelegate()
{
return delegate;
}
public boolean isBackward()
{
return backward;
}
public void setBackward(boolean backward)
{
this.backward = backward;
}
public boolean hasNext()
{
return backward ? delegate.hasPrevious() : delegate.hasNext();
}
public T next()
{
return backward ? delegate.previous() : delegate.next();
}
public void remove()
{
delegate.remove();
}
}
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