private JButton createStopButton() {
stopAction =
new AbstractAction(resourceManager.getString("ProgressBarDemo.stop_button")) {
public void actionPerformed(ActionEvent e) {
timer.stop();
loadAction.setEnabled(true);
stopAction.setEnabled(false);
}
};
return createButton(stopAction);
}
private void createProgressPanel() {
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(resourceManager.getString("ProgressBarDemo.accessible_text_area_name"));
progressTextArea
.getAccessibleContext()
.setAccessibleName(
resourceManager.getString("ProgressBarDemo.accessible_text_area_description"));
textWrapper.add(new JScrollPane(progressTextArea), BorderLayout.CENTER);
add(textWrapper, BorderLayout.CENTER);
JPanel progressPanel = new JPanel();
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(
resourceManager.getString("ProgressBarDemo.accessible_text_loading_progress"));
progressPanel.add(progressBar);
progressPanel.add(createLoadButton());
progressPanel.add(createStopButton());
}
private JButton createLoadButton() {
loadAction =
new AbstractAction(resourceManager.getString("ProgressBarDemo.start_button")) {
public void actionPerformed(ActionEvent e) {
loadAction.setEnabled(false);
stopAction.setEnabled(true);
if (progressBar.getValue() == progressBar.getMaximum()) {
progressBar.setValue(0);
textLocation = 0;
progressTextArea.setText("");
}
timer.start();
}
};
return createButton(loadAction);
}
/**
* JProgressBar Demo
*
* @version 1.12 11/17/05
* @author Jeff Dinkins # @author Peter Korn (accessibility support)
*/
@DemoProperties(
value = "ProgressBar Demo",
category = "Controls",
description = "Demonstrates the JProgressBar, a control which displays progress to the user",
sourceFiles = {
"com/sun/swingset3/demos/progressbar/ProgressBarDemo.java",
"com/sun/swingset3/demos/ResourceManager.java",
"com/sun/swingset3/demos/progressbar/resources/ProgressBarDemo.properties",
"com/sun/swingset3/demos/progressbar/resources/images/ProgressBarDemo.gif"
})
public class ProgressBarDemo extends JPanel {
private final ResourceManager resourceManager = new ResourceManager(this.getClass());
/** main method allows us to run as a standalone demo. */
public static void main(String[] args) {
JFrame frame = new JFrame(ProgressBarDemo.class.getAnnotation(DemoProperties.class).value());
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(new ProgressBarDemo());
frame.setPreferredSize(new Dimension(800, 600));
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
/** ProgressBarDemo Constructor */
public ProgressBarDemo() {
createProgressPanel();
}
private final javax.swing.Timer timer = new javax.swing.Timer(18, createTextLoadAction());
private Action loadAction;
private Action stopAction;
private JProgressBar progressBar;
private JTextArea progressTextArea;
private void createProgressPanel() {
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(resourceManager.getString("ProgressBarDemo.accessible_text_area_name"));
progressTextArea
.getAccessibleContext()
.setAccessibleName(
resourceManager.getString("ProgressBarDemo.accessible_text_area_description"));
textWrapper.add(new JScrollPane(progressTextArea), BorderLayout.CENTER);
add(textWrapper, BorderLayout.CENTER);
JPanel progressPanel = new JPanel();
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(
resourceManager.getString("ProgressBarDemo.accessible_text_loading_progress"));
progressPanel.add(progressBar);
progressPanel.add(createLoadButton());
progressPanel.add(createStopButton());
}
private JButton createLoadButton() {
loadAction =
new AbstractAction(resourceManager.getString("ProgressBarDemo.start_button")) {
public void actionPerformed(ActionEvent e) {
loadAction.setEnabled(false);
stopAction.setEnabled(true);
if (progressBar.getValue() == progressBar.getMaximum()) {
progressBar.setValue(0);
textLocation = 0;
progressTextArea.setText("");
}
timer.start();
}
};
return createButton(loadAction);
}
private JButton createStopButton() {
stopAction =
new AbstractAction(resourceManager.getString("ProgressBarDemo.stop_button")) {
public void actionPerformed(ActionEvent e) {
timer.stop();
loadAction.setEnabled(true);
stopAction.setEnabled(false);
}
};
return createButton(stopAction);
}
private static 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;
}
private int textLocation = 0;
private final String text = resourceManager.getString("ProgressBarDemo.text");
private 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 {
timer.stop();
loadAction.setEnabled(true);
stopAction.setEnabled(false);
}
}
};
}
private static class MyTextArea extends JTextArea {
private MyTextArea() {
super(null, 0, 0);
setEditable(false);
setText("");
}
public float getAlignmentX() {
return LEFT_ALIGNMENT;
}
public float getAlignmentY() {
return TOP_ALIGNMENT;
}
}
}
