| /******************************************************************************* |
| * Copyright (c) 2007, 2008 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.Collection; |
| import java.util.Iterator; |
| |
| import org.eclipse.jpt.utility.internal.StringTools; |
| import org.eclipse.jpt.utility.internal.iterators.ReadOnlyIterator; |
| import org.eclipse.jpt.utility.internal.model.AbstractModel; |
| import org.eclipse.jpt.utility.model.value.CollectionValueModel; |
| |
| /** |
| * Implementation of CollectionValueModel that can be used for |
| * returning an iterator on a static collection, but still allows listeners to be added. |
| * Listeners will NEVER be notified of any changes, because there should be none. |
| */ |
| public class StaticCollectionValueModel<E> |
| extends AbstractModel |
| implements CollectionValueModel<E> |
| { |
| /** The collection. */ |
| protected final Collection<? extends E> collection; |
| |
| private static final long serialVersionUID = 1L; |
| |
| |
| /** |
| * Construct a static CollectionValueModel for the specified collection. |
| */ |
| public StaticCollectionValueModel(Collection<? extends E> collection) { |
| super(); |
| if (collection == null) { |
| throw new NullPointerException(); |
| } |
| this.collection = collection; |
| } |
| |
| // ********** CollectionValueModel implementation ********** |
| |
| public int size() { |
| return this.collection.size(); |
| } |
| |
| public Iterator<E> iterator() { |
| return new ReadOnlyIterator<E>(this.collection.iterator()); |
| } |
| |
| |
| // ********** Object overrides ********** |
| |
| @Override |
| public String toString() { |
| return StringTools.buildToStringFor(this, this.collection); |
| } |
| |
| } |