beampanel.java

Myjxta的源代码 基于JXTA的P2P即时通信系统

/*
*  Copyright (c) 2001 Sun Microsystems, Inc.  All rights
*  reserved.
*
*  Redistribution and use in source and binary forms, with or without
*  modification, are permitted provided that the following conditions
*  are met:
*
*  1. Redistributions of source code must retain the above copyright
*  notice, this list of conditions and the following disclaimer.
*
*  2. Redistributions in binary form must reproduce the above copyright
*  notice, this list of conditions and the following disclaimer in
*  the documentation and/or other materials provided with the
*  distribution.
*
*  3. The end-user documentation included with the redistribution,
*  if any, must include the following acknowledgment:
*  "This product includes software developed by the
*  Sun Microsystems, Inc. for Project JXTA."
*  Alternately, this acknowledgment may appear in the software itself,
*  if and wherever such third-party acknowledgments normally appear.
*
*  4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA"
*  must not be used to endorse or promote products derived from this
*  software without prior written permission. For written
*  permission, please contact Project JXTA at http://www.jxta.org.
*
*  5. Products derived from this software may not be called "JXTA",
*  nor may "JXTA" appear in their name, without prior written
*  permission of Sun.
*
*  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
*  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
*  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
*  DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
*  ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
*  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
*  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
*  USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
*  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
*  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
*  OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
*  SUCH DAMAGE.
*  ====================================================================
*
*  This software consists of voluntary contributions made by many
*  individuals on behalf of Project JXTA.  For more
*  information on Project JXTA, please see
*  <http://www.jxta.org/>.
*
*  This license is based on the BSD license adopted by the Apache Foundation.
*
*  $Id: BeamPanel.java,v 1.2 2006/07/13 05:26:37 nano Exp $
*/

package net.jxta.myjxta.misc.beam;

import net.jxta.myjxta.ui.AbstractButtonKeyListener;
import net.jxta.myjxta.util.Env;

import javax.swing.*;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import java.io.File;
import java.util.Timer;

/**
 * @author james todd [gonzo at jxta dot org]
 * @version $Id: BeamPanel.java,v 1.2 2006/07/13 05:26:37 nano Exp $
 */

public class BeamPanel
        extends JPanel {

    private static final String START = "start";
    private static final String STOP = "stop";
    private File beam = null;
    private JToggleButton poll = null;
    private JLabel value = null;
    private Timer timer = null;

    public BeamPanel(File b) {
        super();

        this.beam = b;

        System.out.println("HOME: " + Env.getHome());
        init();
    }

    public File getBeam() {
        return this.beam;
    }

    public void destroy() {
        stop();
    }

    private void init() {
        add(this.poll = createPoll());
        add(this.value = createBeam());
    }

    private JToggleButton createPoll() {
        JToggleButton tb = new JToggleButton(new AbstractAction() {
            public void actionPerformed(ActionEvent ae) {
                poll();
            }
        });

        tb.setText("poll");
        tb.addKeyListener(new AbstractButtonKeyListener(tb) {
            public void keyReleased(KeyEvent ke) {
                ButtonModel m = getButton().getModel();

                m.setPressed(! m.isPressed());
                m.setSelected(true);

                getButton().getAction().actionPerformed(null);
            }
        });

        return tb;
    }

    private JLabel createBeam() {
        return new JLabel();
    }

    private void poll() {
        if (this.poll.getModel().isSelected()) {
            start();
        } else {
            stop();
        }
    }

    private void start() {
        if (this.timer == null) {
//            this.timer = new Timer();
//            
//            this.timer.schedule(new TimerTask() {
//                
            // xxx: need to parse url from beam
//                private HttpGet fetcher = new HttpGet(getBeam());
//                
//                public void run() {
//                    try {
//                        setValue(fetcher.dispatch().getBody());
//                    } catch (IOException ioe) {
//                        ioe.printStackTrace();
//                    }
//                }
//            }, 0, INTERVAL);
        }

        this.poll.setText(STOP);
    }

    private void stop() {
        if (this.timer != null) {
            this.timer.cancel();

            this.timer = null;

            this.poll.setText(START);
        }
    }

    private void setValue(String v) {
        this.value.setText(v);
    }
}