| /******************************************************************************* |
| * 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 java.util.Arrays; |
| import org.eclipse.jpt.utility.model.Model; |
| import org.eclipse.jpt.utility.model.event.PropertyChangeEvent; |
| import org.eclipse.jpt.utility.model.listener.PropertyChangeListener; |
| import org.eclipse.jpt.utility.model.value.CollectionValueModel; |
| import org.eclipse.jpt.utility.model.value.ListValueModel; |
| |
| /** |
| * Extend {@link ItemAspectListValueModelAdapter} to listen to one or more |
| * properties of each item in the wrapped list model. |
| */ |
| public class ItemPropertyListValueModelAdapter<E> |
| extends ItemAspectListValueModelAdapter<E> |
| { |
| |
| /** The names of the items' properties that we listen to. */ |
| protected final String[] propertyNames; |
| |
| /** Listener that listens to all the items in the list. */ |
| protected final PropertyChangeListener itemPropertyListener; |
| |
| |
| // ********** constructors ********** |
| |
| /** |
| * Construct an adapter for the specified item properties. |
| */ |
| public ItemPropertyListValueModelAdapter(ListValueModel<E> listHolder, String... propertyNames) { |
| super(listHolder); |
| this.propertyNames = propertyNames; |
| this.itemPropertyListener = this.buildItemPropertyListener(); |
| } |
| |
| /** |
| * Construct an adapter for the specified item properties. |
| */ |
| public ItemPropertyListValueModelAdapter(CollectionValueModel<E> collectionHolder, String... propertyNames) { |
| this(new CollectionListValueModelAdapter<E>(collectionHolder), propertyNames); |
| } |
| |
| |
| // ********** initialization ********** |
| |
| protected PropertyChangeListener buildItemPropertyListener() { |
| return new PropertyChangeListener() { |
| public void propertyChanged(PropertyChangeEvent event) { |
| ItemPropertyListValueModelAdapter.this.itemAspectChanged(event); |
| } |
| @Override |
| public String toString() { |
| return "item property listener: " + Arrays.asList(ItemPropertyListValueModelAdapter.this.propertyNames); //$NON-NLS-1$ |
| } |
| }; |
| } |
| |
| |
| // ********** behavior ********** |
| |
| @Override |
| protected void engageItem_(Model item) { |
| for (String propertyName : this.propertyNames) { |
| item.addPropertyChangeListener(propertyName, this.itemPropertyListener); |
| } |
| } |
| |
| @Override |
| protected void disengageItem_(Model item) { |
| for (String propertyName : this.propertyNames) { |
| item.removePropertyChangeListener(propertyName, this.itemPropertyListener); |
| } |
| } |
| |
| } |