| /******************************************************************************* |
| * Copyright (c) 2007 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 org.eclipse.jpt.utility.internal.model.Model; |
| import org.eclipse.jpt.utility.internal.model.event.CollectionChangeEvent; |
| import org.eclipse.jpt.utility.internal.model.listener.CollectionChangeListener; |
| |
| /** |
| * Extend ItemAspectListValueModelAdapter to listen to one or more collection |
| * aspects of each item in the wrapped list model. |
| */ |
| public class ItemCollectionListValueModelAdapter |
| extends ItemAspectListValueModelAdapter |
| { |
| |
| /** The names of the items' collections that we listen to. */ |
| protected final String[] collectionNames; |
| |
| /** Listener that listens to all the items in the list. */ |
| protected final CollectionChangeListener itemCollectionListener; |
| |
| |
| // ********** constructors ********** |
| |
| /** |
| * Construct an adapter for the specified item Collection. |
| */ |
| public ItemCollectionListValueModelAdapter(ListValueModel listHolder, String collectionName) { |
| this(listHolder, new String[] {collectionName}); |
| } |
| |
| /** |
| * Construct an adapter for the specified item Collections. |
| */ |
| public ItemCollectionListValueModelAdapter(ListValueModel listHolder, String collectionName1, String collectionName2) { |
| this(listHolder, new String[] {collectionName1, collectionName2}); |
| } |
| |
| /** |
| * Construct an adapter for the specified item Collections. |
| */ |
| public ItemCollectionListValueModelAdapter(ListValueModel listHolder, String collectionName1, String collectionName2, String collectionName3) { |
| this(listHolder, new String[] {collectionName1, collectionName2, collectionName3}); |
| } |
| |
| /** |
| * Construct an adapter for the specified item Collections. |
| */ |
| public ItemCollectionListValueModelAdapter(ListValueModel listHolder, String[] collectionNames) { |
| super(listHolder); |
| this.collectionNames = collectionNames; |
| this.itemCollectionListener = this.buildItemCollectionListener(); |
| } |
| |
| /** |
| * Construct an adapter for the specified item Collections. |
| */ |
| public ItemCollectionListValueModelAdapter(CollectionValueModel collectionHolder, String collectionName) { |
| this(collectionHolder, new String[] {collectionName}); |
| } |
| |
| /** |
| * Construct an adapter for the specified item Collections. |
| */ |
| public ItemCollectionListValueModelAdapter(CollectionValueModel collectionHolder, String collectionName1, String collectionName2) { |
| this(collectionHolder, new String[] {collectionName1, collectionName2}); |
| } |
| |
| /** |
| * Construct an adapter for the specified item Collections. |
| */ |
| public ItemCollectionListValueModelAdapter(CollectionValueModel collectionHolder, String collectionName1, String collectionName2, String collectionName3) { |
| this(collectionHolder, new String[] {collectionName1, collectionName2, collectionName3}); |
| } |
| |
| /** |
| * Construct an adapter for the specified item Collections. |
| */ |
| public ItemCollectionListValueModelAdapter(CollectionValueModel collectionHolder, String[] collectionNames) { |
| this(new CollectionListValueModelAdapter(collectionHolder), collectionNames); |
| } |
| |
| |
| // ********** initialization ********** |
| |
| /** |
| * All we really care about is the fact that a Collection aspect has |
| * changed. Do the same thing no matter which event occurs. |
| */ |
| protected CollectionChangeListener buildItemCollectionListener() { |
| return new CollectionChangeListener() { |
| public void itemsAdded(CollectionChangeEvent e) { |
| ItemCollectionListValueModelAdapter.this.itemAspectChanged(e); |
| } |
| public void itemsRemoved(CollectionChangeEvent e) { |
| ItemCollectionListValueModelAdapter.this.itemAspectChanged(e); |
| } |
| public void collectionCleared(CollectionChangeEvent e) { |
| ItemCollectionListValueModelAdapter.this.itemAspectChanged(e); |
| } |
| public void collectionChanged(CollectionChangeEvent e) { |
| ItemCollectionListValueModelAdapter.this.itemAspectChanged(e); |
| } |
| @Override |
| public String toString() { |
| return "item collection listener: " + Arrays.asList(ItemCollectionListValueModelAdapter.this.collectionNames); |
| } |
| }; |
| } |
| |
| |
| // ********** behavior ********** |
| |
| @Override |
| protected void startListeningToItem(Model item) { |
| for (int i = this.collectionNames.length; i-- > 0; ) { |
| item.addCollectionChangeListener(this.collectionNames[i], this.itemCollectionListener); |
| } |
| } |
| |
| @Override |
| protected void stopListeningToItem(Model item) { |
| for (int i = this.collectionNames.length; i-- > 0; ) { |
| item.removeCollectionChangeListener(this.collectionNames[i], this.itemCollectionListener); |
| } |
| } |
| |
| } |