debug/org.eclipse.ptp.debug.ui/src/org/eclipse/ptp/debug/internal/ui/actions/StepReturnAction.java

/*******************************************************************************
 * Copyright (c) 2005 The Regents of the University of California. 
 * This material was produced under U.S. Government contract W-7405-ENG-36 
 * for Los Alamos National Laboratory, which is operated by the University 
 * of California for the U.S. Department of Energy. The U.S. Government has 
 * rights to use, reproduce, and distribute this software. NEITHER THE 
 * GOVERNMENT NOR THE UNIVERSITY MAKES ANY WARRANTY, EXPRESS OR IMPLIED, OR 
 * ASSUMES ANY LIABILITY FOR THE USE OF THIS SOFTWARE. If software is modified 
 * to produce derivative works, such modified software should be clearly marked, 
 * so as not to confuse it with the version available from LANL.
 * 
 * Additionally, 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
 * 
 * LA-CC 04-115
 *******************************************************************************/
package org.eclipse.ptp.debug.internal.ui.actions;

import org.eclipse.ptp.core.util.BitList;
import org.eclipse.ptp.debug.internal.ui.PDebugImage;
import org.eclipse.ptp.debug.internal.ui.UIDebugManager;
import org.eclipse.ptp.debug.ui.views.ParallelDebugView;
import org.eclipse.ptp.ui.IManager;
import org.eclipse.ptp.ui.model.IElement;

/**
 * @author clement chu
 *
 */
public class StepReturnAction extends StepAction {
	public static final String name = "Step Return";
	private BitList tasks = null;//can step return tasks

	/** Constructor
	 * @param view
	 */
	public StepReturnAction(ParallelDebugView view) {
		super(name, view);
	    setImageDescriptor(PDebugImage.getDescriptor(PDebugImage.ICON_STEPRETURN_NORMAL));
	    setDisabledImageDescriptor(PDebugImage.getDescriptor(PDebugImage.ICON_STEPRETURN_DISABLE));
	}
	
	/* (non-Javadoc)
	 * @see org.eclipse.ptp.ui.actions.ParallelAction#run(org.eclipse.ptp.ui.model.IElement[])
	 */
	public void run(IElement[] elements) {}
	
	/* (non-Javadoc)
	 * @see org.eclipse.jface.action.IAction#run()
	 */
	public void run() {
		IManager manager = view.getUIManager();
		if (manager instanceof UIDebugManager) {
			setEnabled(false);
			((UIDebugManager)manager).stepReturn(tasks);
			resetTask();
		}
	}
	public void resetTask() {
		tasks = null;
	}
	public void delTask(BitList task) {
		if (tasks != null && task != null) {
			tasks.andNot(task);
		}
	}
	public void addTask(BitList task) {
		if (task != null) {
			if (tasks == null) {
				tasks = task.copy();
			}
			else {
				tasks.or(task);
			}
		}
	}
	public void update() {
		setEnabled(tasks != null && !tasks.isEmpty());
	}
	public BitList getTasks() {
		return tasks;
	}
}