| /******************************************************************************* |
| * Copyright (c) 2007, 2016 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| ******************************************************************************/ |
| |
| package org.eclipse.ui.internal; |
| |
| import org.eclipse.core.runtime.ListenerList; |
| import org.eclipse.ui.IPageListener; |
| import org.eclipse.ui.IPageService; |
| import org.eclipse.ui.IPerspectiveListener; |
| import org.eclipse.ui.IWorkbenchPage; |
| import org.eclipse.ui.services.IDisposable; |
| |
| /** |
| * @since 3.4 |
| * |
| */ |
| public class SlavePageService implements IPageService, IDisposable { |
| |
| private IPageService parent; |
| private ListenerList<IPageListener> pageListeners = new ListenerList<>(ListenerList.IDENTITY); |
| private ListenerList<IPerspectiveListener> perspectiveListeners = new ListenerList<>(ListenerList.IDENTITY); |
| |
| public SlavePageService(IPageService parent) { |
| if (parent == null) { |
| throw new IllegalArgumentException("Parent IPageService cannot be null"); //$NON-NLS-1$ |
| } |
| this.parent = parent; |
| } |
| |
| @Override |
| public void addPageListener(IPageListener listener) { |
| pageListeners.add(listener); |
| parent.addPageListener(listener); |
| } |
| |
| @Override |
| public void addPerspectiveListener(IPerspectiveListener listener) { |
| perspectiveListeners.add(listener); |
| parent.addPerspectiveListener(listener); |
| } |
| |
| @Override |
| public IWorkbenchPage getActivePage() { |
| return parent.getActivePage(); |
| } |
| |
| @Override |
| public void removePageListener(IPageListener listener) { |
| pageListeners.remove(listener); |
| parent.removePageListener(listener); |
| } |
| |
| @Override |
| public void removePerspectiveListener(IPerspectiveListener listener) { |
| perspectiveListeners.remove(listener); |
| parent.removePerspectiveListener(listener); |
| } |
| |
| @Override |
| public void dispose() { |
| |
| for (IPageListener listener : pageListeners) { |
| parent.removePageListener(listener); |
| } |
| pageListeners.clear(); |
| |
| for (IPerspectiveListener listener : perspectiveListeners) { |
| parent.removePerspectiveListener(listener); |
| } |
| perspectiveListeners.clear(); |
| } |
| |
| } |