[Javaprofiler-commits] CVS: module/net/sourceforge/javaprofiler/module/views ActiveThreadsView.java,NONE,1.1

[Lukas P. <pe...@us...>]

Update of /cvsroot/javaprofiler/module/net/sourceforge/javaprofiler/module/views
In directory usw-pr-cvs1:/tmp/cvs-serv29809

Added Files:
	ActiveThreadsView.java 
Log Message:
Panel showing count of active threads.


--- NEW FILE: ActiveThreadsView.java ---
/*
 *                         Sun Public License Notice
 *
 * The contents of this file are subject to the Sun Public License
 * Version 1.0 (the "License"); you may not use this file except
 * in compliance with the License. A copy of the License is available
 * at http://www.sun.com/
 *
 * The Original Code is the Java Profiler module.  The Initial Developers
 * of the Original Code are Jan Stola, Pavel Vacha, Michal Pise, Petr Luner,
 * Lukas Petru and Marek Przeczek.
 *
 * Portions created by Jan Stola are Copyright (C) 2000-2001.
 * All Rights Reserved.
 *
 * Portions created by Pavel Vacha are Copyright (C) 2000-2001.
 * All Rights Reserved.
 *
 * Portions created by Michal Pise are Copyright (C) 2000-2001.
 * All Rights Reserved.
 *
 * Portions created by Petr Luner are Copyright (C) 2000-2001.
 * All Rights Reserved.
 *
 * Portions created by Lukas Petru are Copyright (C) 2000-2001.
 * All Rights Reserved.
 *
 * Portions created by Marek Przeczek are Copyright (C) 2000-2001.
 * All Rights Reserved.
 *
 * Contributors: Jan Stola, Pavel Vacha, Michal Pise, Petr Luner,
 *               Lukas Petru and Marek Przeczek.
 */

package net.sourceforge.javaprofiler.module.views;

import javax.swing.*;
import javax.swing.event.ChangeListener;
import javax.swing.event.ChangeEvent;
import java.awt.BorderLayout;
import java.util.TimerTask;
import java.util.Iterator;
import net.sourceforge.javaprofiler.jpiimpl.realtime.*;

/** This component provides is a panel containing graph of active threads and
 *  two labels showing the maximum and current count of active threads.
 *  @author Lukas Petru
 */
public class ActiveThreadsView extends JPanel {

    /** Component showing a graph. */
    private TimeSeriesGraph graph;
    /** Object returned by getTimerTask. */
    private TimerTask task;

    /** Constructs a panel and an associated TimerTask. The graph is updated
     *  whenewer the associated TimerTask is run.
     */
    public ActiveThreadsView(final ImageR image) {
        super(new BorderLayout());

        graph=new TimeSeriesGraph();
        add(graph, BorderLayout.CENTER);

        final TimeSeriesModel m=graph.getModel();
        final JLabel label1=new JLabel("curr: 000");
        final JLabel label2=new JLabel("max: 000");
        m.addChangeListener(new ChangeListener() {
          public void stateChanged(ChangeEvent e) {
            label1.setText("curr: " + m.getLast());
            label2.setText("max: " + m.getMax());
          }
        });
        JPanel sPanel=new JPanel();
        sPanel.add(label2);
        sPanel.add(label1);
        add(sPanel, BorderLayout.SOUTH);

        task=new TimerTask() {
            public void run() {
              image.refreshThreads();
              // count active threads
              int act=0;
              Iterator it=image.getThreads().iterator();
              while (it.hasNext()) {
                  ThreadR th=(ThreadR) it.next();
                  if (th.isActive())  act++;
              }
              final int val=act;
              // set data in event-dispatching thread
              SwingUtilities.invokeLater(new Runnable() {
                  public void run() {
                      m.shift(val);
                  }
              });
            }
        };
    }

    /** Returns associated <code>TimerTask</code>. */
    public TimerTask getTimerTask() {
        return task;
    }
}