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/*******************************************************************************
* Copyright (c) 2004, 2008 Tasktop Technologies 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:
* Tasktop Technologies - initial API and implementation
*******************************************************************************/
package org.eclipse.mylyn.internal.tasks.ui.actions;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.action.IMenuCreator;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.mylyn.internal.tasks.core.AbstractTask;
import org.eclipse.mylyn.internal.tasks.core.TaskActivationHistory;
import org.eclipse.mylyn.internal.tasks.ui.TaskHistoryDropDown;
import org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin;
import org.eclipse.mylyn.internal.tasks.ui.views.TaskListView;
import org.eclipse.mylyn.tasks.ui.TasksUiImages;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.IWorkbenchWindowPulldownDelegate;
/**
* @author Wesley Coelho
* @author Mik Kersten
* @author Leo Dos Santos
* @author Steffen Pingel
*/
public class ActivateTaskHistoryDropDownAction extends Action implements IWorkbenchWindowPulldownDelegate, IMenuCreator {
public static final String ID = "org.eclipse.mylyn.tasklist.actions.navigate.previous"; //$NON-NLS-1$
private Menu dropDownMenu;
private final TaskActivationHistory taskHistory;
private final TaskHistoryDropDown taskHistoryDropDown;
public ActivateTaskHistoryDropDownAction() {
this.taskHistory = TasksUiPlugin.getTaskActivityManager().getTaskActivationHistory();
this.taskHistoryDropDown = new TaskHistoryDropDown(null, taskHistory);
setText(Messages.ActivateTaskHistoryDropDownAction_Activate_Previous_Task);
setToolTipText(Messages.ActivateTaskHistoryDropDownAction_Activate_Previous_Task);
setId(ID);
setEnabled(true);
setImageDescriptor(TasksUiImages.CONTEXT_HISTORY_PREVIOUS);
}
public void dispose() {
// ignore
}
public Menu getMenu(Control parent) {
if (dropDownMenu != null) {
dropDownMenu.dispose();
}
dropDownMenu = new Menu(parent);
taskHistoryDropDown.fill(dropDownMenu, -1);
return dropDownMenu;
}
public Menu getMenu(Menu parent) {
if (dropDownMenu != null) {
dropDownMenu.dispose();
}
dropDownMenu = new Menu(parent);
taskHistoryDropDown.fill(dropDownMenu, -1);
return dropDownMenu;
}
public void init(IWorkbenchWindow window) {
// ignore
}
@Override
public void run() {
if (taskHistory.hasPrevious()) {
AbstractTask previousTask = taskHistory.getPreviousTask();
if (previousTask != null && !previousTask.isActive()) {
TasksUiPlugin.getTaskActivityManager().activateTask(previousTask);
if (TaskListView.getFromActivePerspective() != null) {
TaskListView.getFromActivePerspective().refresh();
}
}
setEnabled(taskHistory.getPreviousTasks() != null && taskHistory.getPreviousTasks().size() > 0);
}
}
public void run(IAction action) {
run();
}
public void selectionChanged(IAction action, ISelection selection) {
// ignore
}
}
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