| /******************************************************************************* |
| * Copyright (c) 2004 - 2006 University Of British Columbia 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: |
| * University Of British Columbia - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.mylar.provisional.core; |
| |
| import org.eclipse.core.commands.ExecutionEvent; |
| import org.eclipse.core.commands.ExecutionException; |
| import org.eclipse.core.commands.IExecutionListener; |
| import org.eclipse.core.commands.NotHandledException; |
| import org.eclipse.mylar.internal.core.util.MylarStatusHandler; |
| import org.eclipse.ui.PlatformUI; |
| import org.eclipse.ui.commands.ICommandService; |
| |
| /** |
| * Self-registering on construction. |
| * |
| * @author Mik Kersten |
| */ |
| public abstract class AbstractCommandMonitor implements IExecutionListener { |
| |
| /** |
| * Workbench must be active. |
| */ |
| public AbstractCommandMonitor() { |
| try { |
| ICommandService commandService = (ICommandService) PlatformUI.getWorkbench().getAdapter(ICommandService.class); |
| commandService.addExecutionListener(this); |
| } catch (NullPointerException npe) { |
| MylarStatusHandler.log("Monitors can not be instantiated until the workbench is active: ", this); |
| } |
| } |
| |
| public void dispose() { |
| try { |
| ICommandService commandService = (ICommandService) PlatformUI.getWorkbench().getAdapter(ICommandService.class); |
| commandService.removeExecutionListener(this); |
| } catch (NullPointerException npe) { |
| MylarStatusHandler.log(npe, "Could not dispose monitor."); |
| } |
| } |
| |
| public void postExecuteFailure(String commandId, ExecutionException exception) { |
| // don't care about this |
| } |
| |
| public void notHandled(String commandId, NotHandledException exception) { |
| // don't care about this |
| } |
| |
| public void postExecuteSuccess(String commandId, Object returnValue) { |
| // don't care about this |
| } |
| |
| public void preExecute(String commandId, ExecutionEvent event) { |
| if (commandId != null) |
| handleCommandExecution(commandId, event); |
| } |
| |
| protected abstract void handleCommandExecution(String commandId, ExecutionEvent event); |
| } |