Application: gvSIG desktop

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2007 IVER T.I. and Generalitat Valenciana.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 */

package org.gvsig.rastertools;

import java.awt.BorderLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

import sun.misc.Signal;

import sun.misc.SignalHandler;

/**

 * Prueba de manejador de se?ales SIGALRM lanzadas desde las librer?as nativas.

 * 

 * @version 30/03/2007

 * @author Nacho Brodin (nachobrodin@gmail.com)

 */

public class DiagSignalHandler implements SignalHandler {

//	private SignalHandler oldHandler;

	private static boolean active = false;

	//Static method to install the signal handler

	public static DiagSignalHandler install(String signalName) {

		Signal diagSignal = new Signal(signalName);

		DiagSignalHandler diagHandler = new DiagSignalHandler();

//		diagHandler.oldHandler =

		Signal.handle(diagSignal, diagHandler);

		return diagHandler;

	}

	// Signal handler method

	public void handle(Signal sig) {

		if (active)

			return;

		active = true;

		JFrame frame = new JFrame();

		frame.setSize(410, 200);

		JPanel p = new JPanel();

		JLabel l = new JLabel("Su gvSIG ha petado convenientemente. Enga, ?A cascarla!");

		p.setLayout(new BorderLayout());

		JButton b = new JButton("Cerrar");

		b.addActionListener(new ActionListener() {

			public void actionPerformed(ActionEvent e) {

				System.exit(0);

			}

		});

		p.add(l, BorderLayout.CENTER);

		JPanel p1 = new JPanel();

		p1.add(b);

		p.add(p1, BorderLayout.SOUTH);

		frame.getContentPane().add(p);

		frame.show();

		System.out.println("Handler called for signal " + sig);

	}

}