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/*******************************************************************************
* 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.mylyn.internal.tasks.ui.actions;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IMenuCreator;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.mylyn.internal.tasks.ui.views.TaskActivationHistory;
import org.eclipse.mylyn.internal.tasks.ui.views.TaskElementLabelProvider;
import org.eclipse.mylyn.tasks.core.AbstractTask;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Menu;
/**
* This abstract class contains some common code used by NextTaskDropDownAction and PreviousTaskDropDownAction
*
* @author Wesley Coelho
* @author Mik Kersten
*/
public abstract class TaskNavigateDropDownAction extends Action implements IMenuCreator {
protected TaskActivationHistory taskHistory;
protected Menu dropDownMenu = null;
protected TaskElementLabelProvider labelProvider = new TaskElementLabelProvider(false);
/** Maximum number of items to appear in the drop-down menu */
protected final static int MAX_ITEMS_TO_DISPLAY = 12;
public TaskNavigateDropDownAction(TaskActivationHistory history) {
super();
taskHistory = history;
setMenuCreator(this);
}
/**
* Action for navigating to a specified task. This class should be protected but has been made public for testing
* only
*/
public class TaskNavigateAction extends Action {
private AbstractTask targetTask;
private static final int MAX_LABEL_LENGTH = 40;
public TaskNavigateAction(AbstractTask task) {
targetTask = task;
String taskDescription = task.getSummary();
if (taskDescription.length() > MAX_LABEL_LENGTH) {
taskDescription = taskDescription.subSequence(0, MAX_LABEL_LENGTH - 3) + "...";
}
setText(taskDescription);
setEnabled(true);
setToolTipText(task.getSummary());
Image image = labelProvider.getImage(task);
setImageDescriptor(ImageDescriptor.createFromImage(image));
}
@Override
public void run() {
if (targetTask.isActive()) {
return;
}
new TaskActivateAction().run(targetTask);
// taskHistory.navigatedToTask(targetTask);
taskHistory.addTask(targetTask);
setButtonStatus();
// view.refreshAndFocus(false);
// TasksUiUtil.refreshAndOpenTaskListElement(targetTask);
}
}
public void dispose() {
if (dropDownMenu != null) {
dropDownMenu.dispose();
dropDownMenu = null;
}
}
public Menu getMenu(Control parent) {
if (dropDownMenu != null) {
dropDownMenu.dispose();
}
dropDownMenu = new Menu(parent);
addActionsToMenu();
return dropDownMenu;
}
public Menu getMenu(Menu parent) {
if (dropDownMenu != null) {
dropDownMenu.dispose();
}
dropDownMenu = new Menu(parent);
addActionsToMenu();
return dropDownMenu;
}
public void setButtonStatus() {
setEnabled(taskHistory.getPreviousTasks() != null && taskHistory.getPreviousTasks().size() > 0);
// view.getNextTaskAction().setEnabled(taskHistory.hasNext());
}
protected abstract void addActionsToMenu();
}
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