/*
* Copyright (c) 2000, 2008, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
package com.sun.java.swing.ui;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class StatusBar extends JPanel
implements ActionListener, MouseListener
{
public StatusBar()
{
setLayout(new FlowLayout(0));
setBorder(BorderFactory.createEtchedBorder());
progressBar = new JProgressBar(0, 0, 100);
progressBar.setPreferredSize(new Dimension(60, progressBar.getPreferredSize().height + 2));
progressBar.setVisible(false);
label = new JLabel(" ");
preferredSize = new Dimension(getWidth(label.getText()), 2 * getFontHeight());
add(progressBar);
add(label);
}
public static StatusBar getInstance()
{
if(statusBar == null)
statusBar = new StatusBar();
return statusBar;
}
public static void setInstance(StatusBar sb)
{
statusBar = sb;
}
protected int getWidth(String s)
{
FontMetrics fm = getFontMetrics(getFont());
if(fm == null)
return 0;
else
return fm.stringWidth(s);
}
protected int getFontHeight()
{
FontMetrics fm = getFontMetrics(getFont());
if(fm == null)
return 0;
else
return fm.getHeight();
}
public Dimension getPreferredSize()
{
return preferredSize;
}
public void setMessage(String message)
{
label.setText(message);
label.repaint();
}
public void startBusyBar()
{
forward = true;
if(timer == null)
{
setMessage("");
progressBar.setVisible(true);
timer = new Timer(15, this);
timer.start();
}
}
public void stopBusyBar()
{
if(timer != null)
{
timer.stop();
timer = null;
}
setMessage("");
progressBar.setVisible(false);
progressBar.setValue(0);
}
public void actionPerformed(ActionEvent evt)
{
int value = progressBar.getValue();
if(forward)
{
if(value < 100)
{
progressBar.setValue(value + 1);
} else
{
forward = false;
progressBar.setValue(value - 1);
}
} else
if(value > 0)
{
progressBar.setValue(value - 1);
} else
{
forward = true;
progressBar.setValue(value + 1);
}
}
public void mouseClicked(MouseEvent mouseevent)
{
}
public void mousePressed(MouseEvent mouseevent)
{
}
public void mouseReleased(MouseEvent mouseevent)
{
}
public void mouseExited(MouseEvent evt)
{
setMessage("");
}
public void mouseEntered(MouseEvent evt)
{
if(evt.getSource() instanceof AbstractButton)
{
AbstractButton button = (AbstractButton)evt.getSource();
Action action = button.getAction();
if(action != null)
{
String message = (String)action.getValue("LongDescription");
setMessage(message);
}
}
}
private static final int PROGRESS_MAX = 100;
private static final int PROGRESS_MIN = 0;
private JLabel label;
private Dimension preferredSize;
private JProgressBar progressBar;
private Timer timer;
private boolean forward;
private static StatusBar statusBar;
}