/*******************************************************************************
* Copyright (c) 2008, 2016 IBM Corporation and others.
* 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:
* IBM Corporation - initial API and implementation
******************************************************************************/
package org.eclipse.ui.examples.contributions.model;
import java.util.Collection;
import org.eclipse.core.runtime.ListenerList;
import org.eclipse.jface.util.IPropertyChangeListener;
import org.eclipse.ui.handlers.IHandlerService;
import org.eclipse.ui.services.IDisposable;
import org.eclipse.ui.services.IServiceLocator;
/**
* Example implementation that cleans up listeners when the IServiceLocator
* (site, window, etc) is disposed. It delegates to its parent for the actual
* behaviour.
*
* @since 3.4
*/
public class PersonServiceSlave implements IPersonService, IDisposable {
private IServiceLocator serviceLocator;
private IPersonService parentService;
private ListenerList<IPropertyChangeListener> localListeners = new ListenerList<>(
ListenerList.IDENTITY);
public PersonServiceSlave(IServiceLocator locator, IPersonService parent) {
serviceLocator = locator;
parentService = parent;
serviceLocator.hasService(IHandlerService.class);
}
@Override
public void addPersonChangeListener(IPropertyChangeListener listener) {
localListeners.add(listener);
parentService.addPersonChangeListener(listener);
}
@Override
public Collection<Person> getPeople() {
return parentService.getPeople();
}
@Override
public Person getPerson(int id) {
return parentService.getPerson(id);
}
@Override
public void removePersonChangeListener(IPropertyChangeListener listener) {
localListeners.remove(listener);
parentService.removePersonChangeListener(listener);
}
@Override
public void updatePerson(Person person) {
parentService.updatePerson(person);
}
@Override
public Person createPerson(int id) {
return parentService.createPerson(id);
}
@Override
public void dispose() {
Object[] array = localListeners.getListeners();
localListeners.clear();
for (int i = 0; i < array.length; i++) {
parentService
.removePersonChangeListener((IPropertyChangeListener) array[i]);
}
serviceLocator = null;
parentService = null;
}
@Override
public void login(Person person) {
parentService.login(person);
}
}