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/*******************************************************************************
* 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 java.util.Arrays;
import org.eclipse.jpt.utility.internal.model.Model;
import org.eclipse.jpt.utility.internal.model.event.PropertyChangeEvent;
import org.eclipse.jpt.utility.internal.model.listener.PropertyChangeListener;
/**
* Extend ValueAspectPropertyValueModelAdapter to listen to one or more
* properties of the value in the wrapped value model.
*/
public class ValuePropertyPropertyValueModelAdapter
extends ValueAspectPropertyValueModelAdapter
{
/** The names of the value's properties that we listen to. */
protected final String[] propertyNames;
/** Listener that listens to the value. */
protected final PropertyChangeListener valuePropertyListener;
// ********** constructors **********
/**
* Construct an adapter for the specified value property.
*/
public ValuePropertyPropertyValueModelAdapter(PropertyValueModel valueHolder, String propertyName) {
this(valueHolder, new String[] {propertyName});
}
/**
* Construct an adapter for the specified value properties.
*/
public ValuePropertyPropertyValueModelAdapter(PropertyValueModel valueHolder, String propertyName1, String propertyName2) {
this(valueHolder, new String[] {propertyName1, propertyName2});
}
/**
* Construct an adapter for the specified value properties.
*/
public ValuePropertyPropertyValueModelAdapter(PropertyValueModel valueHolder, String propertyName1, String propertyName2, String propertyName3) {
this(valueHolder, new String[] {propertyName1, propertyName2, propertyName3});
}
/**
* Construct an adapter for the specified value properties.
*/
public ValuePropertyPropertyValueModelAdapter(PropertyValueModel valueHolder, String[] propertyNames) {
super(valueHolder);
this.propertyNames = propertyNames;
this.valuePropertyListener = this.buildValuePropertyListener();
}
// ********** initialization **********
protected PropertyChangeListener buildValuePropertyListener() {
return new PropertyChangeListener() {
public void propertyChanged(PropertyChangeEvent e) {
ValuePropertyPropertyValueModelAdapter.this.valueAspectChanged();
}
@Override
public String toString() {
return "value property listener: " + Arrays.asList(ValuePropertyPropertyValueModelAdapter.this.propertyNames);
}
};
}
// ********** behavior **********
@Override
protected void startListeningToValue() {
Model v = (Model) this.value;
for (int i = this.propertyNames.length; i-- > 0; ) {
v.addPropertyChangeListener(this.propertyNames[i], this.valuePropertyListener);
}
}
@Override
protected void stopListeningToValue() {
Model v = (Model) this.value;
for (int i = this.propertyNames.length; i-- > 0; ) {
v.removePropertyChangeListener(this.propertyNames[i], this.valuePropertyListener);
}
}
// ********** item change support **********
}
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