packetselectionlistener.java

用于传感器网络的节点操作系统 TinyOS 结构设计非常有意思

/*									tab:2
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 * "Copyright (c) 2000 and The Regents of the University 
 * of California.  All rights reserved.
 *
 * Permission to use, copy, modify, and distribute this software and
 * its documentation for any purpose, without fee, and without written
 * agreement is hereby granted, provided that the above copyright
 * notice and the following two paragraphs appear in all copies of
 * this software.
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 * 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.
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 * 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,
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 *
 * Authors:		Phil Levis
 * Date:        Aug 2 2001
 * Desc:        Listener for when packet selection options change.
 *
 */

package net.tinyos.sim;

import java.awt.*;
import javax.swing.*;
import javax.swing.event.*;

public class PacketSelectionListener implements ListSelectionListener {
    private static JDialog dialog;
    private PacketPanel panel;
    
    public PacketSelectionListener(PacketPanel panel) {
	this.panel = panel;
    }
    
    public void valueChanged(ListSelectionEvent e) {
	int index = e.getFirstIndex();
	Point p = null;

	//System.out.println("event e = " + e);
	
	if (dialog != null) {
	    p = dialog.getLocation();
	    //System.out.println("point p = " + p);
	    dialog.dispose();
	}
	
	dialog = new PacketDialog((RFMPacket)panel.getFiltered().elementAt(index));
	if (p != null) {
	    dialog.setLocation(p);
	}
	
	dialog.show();
    }
}