| /******************************************************************************* |
| * Copyright (c) 2007, 2009 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.common.utility.internal.model.value; |
| |
| import java.util.Arrays; |
| |
| import org.eclipse.jpt.common.utility.model.Model; |
| import org.eclipse.jpt.common.utility.model.event.ListAddEvent; |
| import org.eclipse.jpt.common.utility.model.event.ListChangeEvent; |
| import org.eclipse.jpt.common.utility.model.event.ListClearEvent; |
| import org.eclipse.jpt.common.utility.model.event.ListMoveEvent; |
| import org.eclipse.jpt.common.utility.model.event.ListRemoveEvent; |
| import org.eclipse.jpt.common.utility.model.event.ListReplaceEvent; |
| import org.eclipse.jpt.common.utility.model.listener.ListChangeListener; |
| import org.eclipse.jpt.common.utility.model.value.CollectionValueModel; |
| import org.eclipse.jpt.common.utility.model.value.ListValueModel; |
| |
| /** |
| * Extend {@link ItemAspectListValueModelAdapter} to listen to one or more list |
| * aspects of each item in the wrapped list model. |
| */ |
| public class ItemListListValueModelAdapter<E> |
| extends ItemAspectListValueModelAdapter<E> |
| { |
| |
| /** The names of the subject's lists that we listen to. */ |
| protected final String[] listNames; |
| |
| /** Listener that listens to all the items in the list. */ |
| protected final ListChangeListener itemListListener; |
| |
| |
| // ********** constructors ********** |
| |
| /** |
| * Construct an adapter for the specified item List aspects. |
| */ |
| public ItemListListValueModelAdapter(ListValueModel<E> listHolder, String... listNames) { |
| super(listHolder); |
| this.listNames = listNames; |
| this.itemListListener = this.buildItemListListener(); |
| } |
| |
| /** |
| * Construct an adapter for the specified item List aspects. |
| */ |
| public ItemListListValueModelAdapter(CollectionValueModel<E> collectionHolder, String... listNames) { |
| this(new CollectionListValueModelAdapter<E>(collectionHolder), listNames); |
| } |
| |
| |
| // ********** initialization ********** |
| |
| /** |
| * All we really care about is the fact that the List aspect has |
| * changed. Do the same thing no matter which event occurs. |
| */ |
| protected ListChangeListener buildItemListListener() { |
| return new ListChangeListener() { |
| public void itemsAdded(ListAddEvent event) { |
| ItemListListValueModelAdapter.this.itemAspectChanged(event); |
| } |
| public void itemsRemoved(ListRemoveEvent event) { |
| ItemListListValueModelAdapter.this.itemAspectChanged(event); |
| } |
| public void itemsReplaced(ListReplaceEvent event) { |
| ItemListListValueModelAdapter.this.itemAspectChanged(event); |
| } |
| public void itemsMoved(ListMoveEvent event) { |
| ItemListListValueModelAdapter.this.itemAspectChanged(event); |
| } |
| public void listCleared(ListClearEvent event) { |
| ItemListListValueModelAdapter.this.itemAspectChanged(event); |
| } |
| public void listChanged(ListChangeEvent event) { |
| ItemListListValueModelAdapter.this.itemAspectChanged(event); |
| } |
| @Override |
| public String toString() { |
| return "item list listener: " + Arrays.asList(ItemListListValueModelAdapter.this.listNames); //$NON-NLS-1$ |
| } |
| }; |
| } |
| |
| |
| // ********** behavior ********** |
| |
| @Override |
| protected void engageItem_(Model item) { |
| for (String listName : this.listNames) { |
| item.addListChangeListener(listName, this.itemListListener); |
| } |
| } |
| |
| @Override |
| protected void disengageItem_(Model item) { |
| for (String listName : this.listNames) { |
| item.removeListChangeListener(listName, this.itemListListener); |
| } |
| } |
| |
| } |