| /******************************************************************************* |
| * Copyright (c) 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.ChangeEvent; |
| import org.eclipse.jpt.utility.model.listener.ChangeListener; |
| import org.eclipse.jpt.utility.model.listener.CommandChangeListener; |
| import org.eclipse.jpt.utility.model.value.WritablePropertyValueModel; |
| |
| /** |
| * Extend {@link ValueAspectAdapter} to listen to all the aspects |
| * of the value in the wrapped value model. |
| */ |
| public class ValueChangeAdapter<V extends Model> |
| extends ValueAspectAdapter<V> |
| { |
| /** Listener that listens to the value. */ |
| protected final ChangeListener valueAspectListener; |
| |
| |
| // ********** constructors ********** |
| |
| /** |
| * Construct a change adapter for the specified value. |
| */ |
| public ValueChangeAdapter(WritablePropertyValueModel<V> valueHolder) { |
| super(valueHolder); |
| this.valueAspectListener = this.buildValueAspectListener(); |
| } |
| |
| |
| // ********** initialization ********** |
| |
| protected ChangeListener buildValueAspectListener() { |
| return new CommandChangeListener() { |
| @Override |
| protected void modelChanged(ChangeEvent event) { |
| ValueChangeAdapter.this.valueAspectChanged(event); |
| } |
| @Override |
| public String toString() { |
| return "value change listener"; //$NON-NLS-1$ |
| } |
| }; |
| } |
| |
| |
| // ********** ValueAspectAdapter implementation ********** |
| |
| @Override |
| protected void engageValue_() { |
| this.value.addChangeListener(this.valueAspectListener); |
| } |
| |
| @Override |
| protected void disengageValue_() { |
| this.value.removeChangeListener(this.valueAspectListener); |
| } |
| |
| |
| // ********** change events ********** |
| |
| protected void valueAspectChanged(@SuppressWarnings("unused") ChangeEvent event) { |
| this.valueAspectChanged(); |
| } |
| |
| } |