/*******************************************************************************
* Copyright (c) 2007, 2010 Oracle. 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:
* Oracle - initial API and implementation
******************************************************************************/
package org.eclipse.jpt.utility.internal.model.value;
import java.util.Arrays;
import java.util.Iterator;
import java.util.ListIterator;
import org.eclipse.jpt.utility.internal.ArrayTools;
import org.eclipse.jpt.utility.internal.iterators.ArrayIterator;
import org.eclipse.jpt.utility.internal.iterators.ArrayListIterator;
import org.eclipse.jpt.utility.internal.model.AbstractModel;
import org.eclipse.jpt.utility.model.value.ListValueModel;
/**
* Implementation of {@link ListValueModel} that can be used for
* returning a list iterator on a static list, but still allows listeners to be added.
* Listeners will never be notified of any changes, because there should be none.
*/
public class StaticListValueModel
extends AbstractModel
implements ListValueModel
{
/** The elements. */
protected final Object[] elements;
private static final long serialVersionUID = 1L;
/**
* Construct a static list value model for the specified elements.
*/
public StaticListValueModel(E... elements) {
super();
this.elements = elements.clone();
}
/**
* Construct a static list value model for the specified elements.
*/
public StaticListValueModel(Iterable extends E> elements) {
super();
this.elements = ArrayTools.array(elements);
}
// ********** ListValueModel implementation **********
@SuppressWarnings("unchecked")
public Iterator iterator() {
// we can cast here since our constructors require the elements to be
// of type E and ArrayIterator is read-only
return (Iterator) new ArrayIterator