| /******************************************************************************* |
| * 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.utility.internal.model.value; |
| |
| import org.eclipse.jpt.utility.model.Model; |
| import org.eclipse.jpt.utility.model.event.StateChangeEvent; |
| import org.eclipse.jpt.utility.model.listener.StateChangeListener; |
| import org.eclipse.jpt.utility.model.value.CollectionValueModel; |
| import org.eclipse.jpt.utility.model.value.ListValueModel; |
| |
| /** |
| * Extend {@link ItemAspectListValueModelAdapter} to listen to the |
| * "state" of each item in the wrapped list model. |
| */ |
| public class ItemStateListValueModelAdapter<E> |
| extends ItemAspectListValueModelAdapter<E> |
| { |
| /** Listener that listens to all the items in the list. */ |
| protected final StateChangeListener itemStateListener; |
| |
| |
| // ********** constructors ********** |
| |
| /** |
| * Construct an adapter for the item state. |
| */ |
| public ItemStateListValueModelAdapter(ListValueModel<E> listHolder) { |
| super(listHolder); |
| this.itemStateListener = this.buildItemStateListener(); |
| } |
| |
| /** |
| * Construct an adapter for the item state. |
| */ |
| public ItemStateListValueModelAdapter(CollectionValueModel<E> collectionHolder) { |
| this(new CollectionListValueModelAdapter<E>(collectionHolder)); |
| } |
| |
| |
| // ********** initialization ********** |
| |
| protected StateChangeListener buildItemStateListener() { |
| return new StateChangeListener() { |
| public void stateChanged(StateChangeEvent event) { |
| ItemStateListValueModelAdapter.this.itemAspectChanged(event); |
| } |
| @Override |
| public String toString() { |
| return "item state listener"; //$NON-NLS-1$ |
| } |
| }; |
| } |
| |
| |
| // ********** behavior ********** |
| |
| @Override |
| protected void engageItem_(Model item) { |
| item.addStateChangeListener(this.itemStateListener); |
| } |
| |
| @Override |
| protected void disengageItem_(Model item) { |
| item.removeStateChangeListener(this.itemStateListener); |
| } |
| |
| } |