| /******************************************************************************* |
| * 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 org.eclipse.jpt.utility.internal.model.Model; |
| import org.eclipse.jpt.utility.internal.model.event.StateChangeEvent; |
| import org.eclipse.jpt.utility.internal.model.listener.StateChangeListener; |
| |
| /** |
| * Extend ValueAspectPropertyValueModelAdapter to listen to the |
| * "state" of the value in the wrapped value model. |
| */ |
| public class ValueStatePropertyValueModelAdapter |
| extends ValueAspectPropertyValueModelAdapter |
| { |
| /** Listener that listens to value. */ |
| protected final StateChangeListener valueStateListener; |
| |
| |
| // ********** constructors ********** |
| |
| /** |
| * Construct an adapter for the value state. |
| */ |
| public ValueStatePropertyValueModelAdapter(PropertyValueModel valueHolder) { |
| super(valueHolder); |
| this.valueStateListener = this.buildValueStateListener(); |
| } |
| |
| |
| // ********** initialization ********** |
| |
| protected StateChangeListener buildValueStateListener() { |
| return new StateChangeListener() { |
| public void stateChanged(StateChangeEvent e) { |
| ValueStatePropertyValueModelAdapter.this.valueAspectChanged(); |
| } |
| @Override |
| public String toString() { |
| return "value state listener"; |
| } |
| }; |
| } |
| |
| |
| // ********** behavior ********** |
| |
| @Override |
| protected void startListeningToValue() { |
| ((Model) this.value).addStateChangeListener(this.valueStateListener); |
| } |
| |
| @Override |
| protected void stopListeningToValue() { |
| ((Model) this.value).removeStateChangeListener(this.valueStateListener); |
| } |
| |
| } |