| /******************************************************************************* |
| * Copyright (c) 2007 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.internal; |
| |
| import org.eclipse.core.runtime.ListenerList; |
| import org.eclipse.ui.IPartListener; |
| import org.eclipse.ui.IPartListener2; |
| import org.eclipse.ui.IPartService; |
| import org.eclipse.ui.IWorkbenchPart; |
| import org.eclipse.ui.IWorkbenchPartReference; |
| import org.eclipse.ui.services.IDisposable; |
| |
| /** |
| * A part service which delegates all responsibility to the parent service. The |
| * slave service is only responsible for disposing any locally activated |
| * listeners when it is disposed. |
| * <p> |
| * This class is not intended for use outside of the |
| * <code>org.eclipse.ui.workbench</code> plug-in. |
| * </p> |
| * |
| * @since 3.4 |
| * |
| */ |
| public class SlavePartService implements IPartService, IDisposable { |
| |
| /** |
| * The parent part service to which all listeners are routed. This value is |
| * never <code>null</code>. |
| */ |
| private IPartService parent; |
| |
| private ListenerList listeners = new ListenerList(ListenerList.IDENTITY); |
| |
| /** |
| * Constructs a new instance. |
| * |
| * @param parentPartService |
| * The parent part service for this slave. Never |
| * <code>null</code>. |
| */ |
| public SlavePartService(IPartService parentPartService) { |
| if (parentPartService == null) { |
| throw new IllegalArgumentException( |
| "The parent part service cannot be null"); //$NON-NLS-1$ |
| } |
| this.parent = parentPartService; |
| } |
| |
| public void addPartListener(IPartListener listener) { |
| listeners.add(listener); |
| parent.addPartListener(listener); |
| } |
| |
| public void addPartListener(IPartListener2 listener) { |
| listeners.add(listener); |
| parent.addPartListener(listener); |
| } |
| |
| public IWorkbenchPart getActivePart() { |
| return parent.getActivePart(); |
| } |
| |
| public IWorkbenchPartReference getActivePartReference() { |
| return parent.getActivePartReference(); |
| } |
| |
| public void removePartListener(IPartListener listener) { |
| listeners.remove(listener); |
| parent.removePartListener(listener); |
| } |
| |
| public void removePartListener(IPartListener2 listener) { |
| listeners.remove(listener); |
| parent.removePartListener(listener); |
| } |
| |
| public void dispose() { |
| Object list[] = listeners.getListeners(); |
| for (int i = 0; i < list.length; i++) { |
| Object obj = list[i]; |
| if (obj instanceof IPartListener) { |
| parent.removePartListener((IPartListener) obj); |
| } |
| if (obj instanceof IPartListener2) { |
| parent.removePartListener((IPartListener2) obj); |
| } |
| } |
| listeners.clear(); |
| } |
| |
| } |