| /******************************************************************************* |
| * 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.tests.internal.model.value; |
| |
| import java.util.Collection; |
| import java.util.Iterator; |
| import org.eclipse.jpt.utility.internal.Bag; |
| import org.eclipse.jpt.utility.internal.CollectionTools; |
| import org.eclipse.jpt.utility.internal.HashBag; |
| import org.eclipse.jpt.utility.model.event.CollectionChangeEvent; |
| import org.eclipse.jpt.utility.model.listener.CollectionChangeListener; |
| import org.eclipse.jpt.utility.model.value.CollectionValueModel; |
| |
| /** |
| * Helper class that keeps an internal collection in synch with the |
| * collection held by a collection value model. |
| */ |
| class CoordinatedBag<E> implements Bag<E>, CollectionChangeListener { |
| |
| private Bag<E> bag = new HashBag<E>(); |
| |
| CoordinatedBag(CollectionValueModel<E> cvm) { |
| cvm.addCollectionChangeListener(CollectionValueModel.VALUES, this); |
| } |
| |
| |
| // ********** Collection implementation ********** |
| |
| public boolean add(E o) { |
| return this.bag.add(o); |
| } |
| |
| public boolean addAll(Collection<? extends E> c) { |
| return this.bag.addAll(c); |
| } |
| |
| public void clear() { |
| this.bag.clear(); |
| } |
| |
| public boolean contains(Object o) { |
| return this.bag.contains(o); |
| } |
| |
| public boolean containsAll(Collection<?> c) { |
| return this.bag.containsAll(c); |
| } |
| |
| public boolean isEmpty() { |
| return this.bag.isEmpty(); |
| } |
| |
| public Iterator<E> iterator() { |
| return this.bag.iterator(); |
| } |
| |
| public boolean remove(Object o) { |
| return this.bag.remove(o); |
| } |
| |
| public boolean removeAll(Collection<?> c) { |
| return this.bag.removeAll(c); |
| } |
| |
| public boolean retainAll(Collection<?> c) { |
| return this.bag.retainAll(c); |
| } |
| |
| public int size() { |
| return this.bag.size(); |
| } |
| |
| public Object[] toArray() { |
| return this.bag.toArray(); |
| } |
| |
| public <T> T[] toArray(T[] a) { |
| return this.bag.toArray(a); |
| } |
| |
| |
| // ********** Bag implementation ********** |
| |
| public int count(Object o) { |
| return this.bag.count(o); |
| } |
| |
| public boolean add(E o, int count) { |
| return this.bag.add(o, count); |
| } |
| |
| public boolean remove(Object o, int count) { |
| return this.bag.remove(o, count); |
| } |
| |
| public Iterator<E> uniqueIterator() { |
| return this.bag.uniqueIterator(); |
| } |
| |
| // ********** CollectionChangeListener implementation ********** |
| |
| public void itemsAdded(CollectionChangeEvent e) { |
| for (@SuppressWarnings("unchecked") Iterator<E> stream = (Iterator<E>) e.items(); stream.hasNext(); ) { |
| this.bag.add(stream.next()); |
| } |
| } |
| |
| public void itemsRemoved(CollectionChangeEvent e) { |
| for (@SuppressWarnings("unchecked") Iterator<E> stream = (Iterator<E>) e.items(); stream.hasNext(); ) { |
| this.bag.remove(stream.next()); |
| } |
| } |
| |
| public void collectionCleared(CollectionChangeEvent e) { |
| this.bag.clear(); |
| } |
| |
| @SuppressWarnings("unchecked") |
| public void collectionChanged(CollectionChangeEvent e) { |
| this.bag.clear(); |
| CollectionTools.addAll(this.bag, ((CollectionValueModel<E>) e.getSource()).iterator()); |
| } |
| |
| |
| // ********** standard methods ********** |
| |
| @Override |
| public boolean equals(Object o) { |
| return this.bag.equals(o); |
| } |
| |
| @Override |
| public int hashCode() { |
| return this.bag.hashCode(); |
| } |
| |
| @Override |
| public String toString() { |
| return this.bag.toString(); |
| } |
| |
| } |