| /******************************************************************************* |
| * Copyright (c) 2004, 2008 Eugene Kuleshov 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: |
| * Eugene Kuleshov - initial API and implementation |
| * Tasktop Technologies - improvements |
| *******************************************************************************/ |
| |
| package org.eclipse.mylyn.internal.tasks.ui; |
| |
| import java.util.Map; |
| |
| import org.eclipse.core.commands.AbstractHandler; |
| import org.eclipse.core.commands.Command; |
| import org.eclipse.core.commands.ExecutionEvent; |
| import org.eclipse.core.commands.ExecutionException; |
| import org.eclipse.core.runtime.SafeRunner; |
| import org.eclipse.jface.util.SafeRunnable; |
| import org.eclipse.mylyn.context.core.ContextCore; |
| import org.eclipse.mylyn.internal.tasks.core.AbstractTask; |
| import org.eclipse.mylyn.internal.tasks.core.TaskActivationHistory; |
| import org.eclipse.mylyn.internal.tasks.ui.actions.ActivateTaskDialogAction; |
| import org.eclipse.mylyn.internal.tasks.ui.actions.TaskActivateAction; |
| import org.eclipse.mylyn.tasks.ui.TasksUi; |
| import org.eclipse.mylyn.tasks.ui.TasksUiImages; |
| import org.eclipse.ui.IWorkbenchWindow; |
| import org.eclipse.ui.commands.ICommandService; |
| import org.eclipse.ui.commands.IElementUpdater; |
| import org.eclipse.ui.handlers.HandlerUtil; |
| import org.eclipse.ui.menus.UIElement; |
| |
| /** |
| * @author Eugene Kuleshov |
| * @author Steffen Pingel |
| */ |
| public class TaskHistoryHandler extends AbstractHandler implements IElementUpdater { |
| |
| public Object execute(final ExecutionEvent event) throws ExecutionException { |
| if (TasksUi.getTaskActivityManager().getActiveTask() != null) { |
| if (ContextCore.getContextManager().isContextCapturePaused()) { |
| IWorkbenchWindow window = HandlerUtil.getActiveWorkbenchWindow(event); |
| if (window != null) { |
| ICommandService commandService = (ICommandService) window.getService(ICommandService.class); |
| if (commandService != null) { |
| final Command command = commandService.getCommand("org.eclipse.mylyn.ui.context.capture.pause.command"); //$NON-NLS-1$ |
| if (command != null) { |
| SafeRunner.run(new SafeRunnable() { |
| public void run() throws Exception { |
| command.executeWithChecks(event); |
| } |
| }); |
| } |
| } |
| } |
| } else { |
| TasksUi.getTaskActivityManager().deactivateActiveTask(); |
| } |
| } else { |
| TaskActivationHistory taskHistory = TasksUiPlugin.getTaskActivityManager().getTaskActivationHistory(); |
| if (taskHistory.hasPrevious()) { |
| AbstractTask previousTask = taskHistory.getPreviousTask(); |
| new TaskActivateAction().run(previousTask); |
| } else { |
| IWorkbenchWindow window = HandlerUtil.getActiveWorkbenchWindow(event); |
| if (window != null) { |
| ActivateTaskDialogAction action = new ActivateTaskDialogAction(); |
| action.init(window); |
| action.run(null); |
| } |
| } |
| } |
| return null; |
| } |
| |
| @SuppressWarnings("unchecked") |
| public void updateElement(UIElement element, Map parameters) { |
| if (TasksUi.getTaskActivityManager().getActiveTask() == null) { |
| element.setIcon(TasksUiImages.CONTEXT_HISTORY_PREVIOUS); |
| } else { |
| if (ContextCore.getContextManager().isContextCapturePaused()) { |
| element.setIcon(TasksUiImages.CONTEXT_HISTORY_PREVIOUS_PAUSE); |
| } else { |
| element.setIcon(TasksUiImages.CONTEXT_HISTORY_PREVIOUS_ACTIVE); |
| } |
| } |
| } |
| |
| } |