| /******************************************************************************* |
| * Copyright (c) 2000, 2003 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.ui.internal; |
| |
| |
| import org.eclipse.ui.*; |
| |
| /** |
| * A perspective service tracks the activation and reset of perspectives within a |
| * workbench page. |
| * <p> |
| * This interface is not intended to be implemented by clients. |
| * </p> |
| * |
| * @see IWorkbenchPage |
| */ |
| public interface IPerspectiveService { |
| /** |
| * Adds the given listener for a page's perspective lifecycle events. |
| * Has no effect if an identical listener is already registered. |
| * |
| * @param listener a perspective listener |
| */ |
| public void addPerspectiveListener(IInternalPerspectiveListener listener); |
| /* |
| * Returns the active perspective descriptor in the active workbench page. |
| * |
| * @return the active perspective descriptor, or <code>null</code> if no perspective is currently active |
| */ |
| public IPerspectiveDescriptor getActivePerspective(); |
| /** |
| * Removes the given page's perspective listener. |
| * Has no affect if an identical listener is not registered. |
| * |
| * @param listener a perspective listener |
| */ |
| public void removePerspectiveListener(IInternalPerspectiveListener listener); |
| } |