/* Action to trigger the About dialog of the Eclipse backtracking plugin.

@Copyright (c) 1998-2007 The Regents of the University of California.
All rights reserved.

Permission is hereby granted, without written agreement and without
license or royalty fees, to use, copy, modify, and distribute this
software and its documentation for any purpose, provided that the
above copyright notice and the following two paragraphs appear in all
copies of this software.

IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY
FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.

THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF
CALIFORNIA HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
ENHANCEMENTS, OR MODIFICATIONS.

                                                PT_COPYRIGHT_VERSION_2
                                                COPYRIGHTENDKEY



 */
package ptolemy.backtrack.eclipse.plugin.actions;

import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.IWorkbenchWindowActionDelegate;

import ptolemy.backtrack.eclipse.plugin.dialogs.AboutDialog;

//////////////////////////////////////////////////////////////////////////
//// AboutAction

/**
 Action to trigger the About dialog of the Eclipse backtracking plugin.

 @author Thomas Feng
 @version $Id$
 @since Ptolemy II 5.1
 @Pt.ProposedRating Red (tfeng)
 @Pt.AcceptedRating Red (tfeng)
 */
public class AboutAction implements IWorkbenchWindowActionDelegate {

    /** Dispose of system resources allocated for this actions.
     */
    public void dispose() {
    }

    /** Initialize the action with a window as its parent.
     *
     *  @param window The parent window.
     */
    public void init(IWorkbenchWindow window) {
        _window = window;
    }

    /** Activate the action and pop up the About dialog.
     *
     *  @param action The action proxy (not used in this method).
     */
    public void run(IAction action) {
        AboutDialog dialog = new AboutDialog(_window.getShell());
        dialog.open();
    }

    /** Handle the change of selection.
     *
     *  @param action The action proxy (not used in this method).
     *  @param selection The new selection (not used in this method).
     */
    public void selectionChanged(IAction action, ISelection selection) {
    }

    /** The parent window.
     */
    private IWorkbenchWindow _window;
}