/*
* @(#)ProgressBarDemo.java 1.2 99/10/12
*
* Copyright (c) 1997-1999 by Sun Microsystems, Inc. All Rights Reserved.
*
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* which is disparaging to Sun.
*
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*/
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
import javax.swing.border.*;
import javax.swing.colorchooser.*;
import javax.swing.filechooser.*;
import javax.accessibility.*;
import java.awt.*;
import java.awt.event.*;
import java.beans.*;
import java.util.*;
import java.io.*;
import java.applet.*;
import java.net.*;
/**
* JProgressBar Demo
*
* @version 1.2 10/12/99
* @author Jeff Dinkins
# @author Peter Korn (accessibility support)
*/
public class ProgressBarDemo extends DemoModule {
/**
* main method allows us to run as a standalone demo.
*/
public static void main(String[] args) {
ProgressBarDemo demo = new ProgressBarDemo(null);
demo.mainImpl();
}
/**
* ProgressBarDemo Constructor
*/
public ProgressBarDemo(SwingSet2 swingset) {
// Set the title for this demo, and an icon used to represent this
// demo inside the SwingSet2 app.
super(swingset, "ProgressBarDemo", "toolbar/JProgressBar.gif");
createProgressPanel();
}
javax.swing.Timer timer;
Action loadAction;
Action stopAction;
JProgressBar progressBar;
JTextArea progressTextArea;
public void createProgressPanel() {
getDemoPanel().setLayout(new BorderLayout());
JPanel textWrapper = new JPanel(new BorderLayout());
textWrapper.setBorder(new SoftBevelBorder(BevelBorder.LOWERED));
textWrapper.setAlignmentX(LEFT_ALIGNMENT);
progressTextArea = new MyTextArea();
progressTextArea.getAccessibleContext().setAccessibleName(getString("ProgressBarDemo.accessible_text_area_name"));
progressTextArea.getAccessibleContext().setAccessibleName(getString("ProgressBarDemo.accessible_text_area_description"));
textWrapper.add(progressTextArea, BorderLayout.CENTER);
getDemoPanel().add(textWrapper, BorderLayout.CENTER);
JPanel progressPanel = new JPanel();
getDemoPanel().add(progressPanel, BorderLayout.SOUTH);
progressBar = new JProgressBar(JProgressBar.HORIZONTAL, 0, text.length()) {
public Dimension getPreferredSize() {
return new Dimension(300, super.getPreferredSize().height);
}
};
progressBar.getAccessibleContext().setAccessibleName(getString("ProgressBarDemo.accessible_text_loading_progress"));
progressPanel.add(progressBar);
progressPanel.add(createLoadButton());
progressPanel.add(createStopButton());
}
public JButton createLoadButton() {
loadAction = new AbstractAction(getString("ProgressBarDemo.start_button")) {
public void actionPerformed(ActionEvent e) {
if(timer == null) {
loadAction.setEnabled(false);
stopAction.setEnabled(true);
timer = new javax.swing.Timer(18, createTextLoadAction());
timer.start();
}
}
};
return createButton(loadAction);
}
public JButton createStopButton() {
stopAction = new AbstractAction(getString("ProgressBarDemo.stop_button")) {
public void actionPerformed(ActionEvent e) {
if(timer != null) {
timer.stop();
timer = null;
}
loadAction.setEnabled(true);
stopAction.setEnabled(false);
}
};
return createButton(stopAction);
}
public JButton createButton(Action a) {
JButton b = new JButton();
// setting the following client property informs the button to show
// the action text as it's name. The default is to not show the
// action text.
b.putClientProperty("displayActionText", Boolean.TRUE);
b.setAction(a);
return b;
}
int textLocation = 0;
String text = getString("ProgressBarDemo.text");
public Action createTextLoadAction() {
return new AbstractAction("text load action") {
public void actionPerformed (ActionEvent e) {
if(progressBar.getValue() < progressBar.getMaximum()) {
progressBar.setValue(progressBar.getValue() + 1);
progressTextArea.append(text.substring(textLocation, textLocation+1));
textLocation++;
} else {
if(timer != null) {
timer.stop();
timer = null;
loadAction.setEnabled(true);
stopAction.setEnabled(false);
}
}
}
};
}
class MyTextArea extends JTextArea {
public MyTextArea() {
super(null, 0, 0);
setEditable(false);
setText("");
}
public float getAlignmentX () {
return LEFT_ALIGNMENT;
}
public float getAlignmentY () {
return TOP_ALIGNMENT;
}
}
}
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