/
MainPanel.java
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/
MainPanel.java
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// -*- mode:java; encoding:utf-8 -*-
// vim:set fileencoding=utf-8:
// @homepage@
package example;
import java.awt.*;
import java.awt.event.AWTEventListener;
import javax.swing.*;
public final class MainPanel extends JPanel {
private static final int DELAY = 10 * 1000; // 10s
private final JLabel label = new JLabel("Not connected");
private final JComboBox<String> combo = makeComboBox();
private final JTextField textField = new JTextField(20);
private final JButton button = new JButton("Connect");
private MainPanel() {
super(new BorderLayout());
JTextArea log = new JTextArea();
// EventQueue eventQueue = new EventQueue() {
// @Override protected void dispatchEvent(AWTEvent e) {
// super.dispatchEvent(e);
// if (e instanceof InputEvent && Objects.nonNull(timer) && timer.isRunning()) {
// timer.restart();
// }
// }
// };
Timer timer = new Timer(DELAY, null);
AWTEventListener awtEvent = e -> {
if (timer.isRunning()) {
log.append("timer.restart()\n");
timer.restart();
}
};
timer.addActionListener(e -> {
log.append("timeout\n");
setTestConnected(false);
Toolkit.getDefaultToolkit().removeAWTEventListener(awtEvent);
((Timer) e.getSource()).stop();
});
button.addActionListener(e -> {
setTestConnected(true);
long msk = AWTEvent.KEY_EVENT_MASK + AWTEvent.MOUSE_EVENT_MASK;
Toolkit.getDefaultToolkit().addAWTEventListener(awtEvent, msk);
// Toolkit.getDefaultToolkit().getSystemEventQueue().push(eventQueue);
timer.setRepeats(false);
timer.start();
});
setTestConnected(false);
JPanel p = new JPanel(new BorderLayout());
p.add(label);
p.add(button, BorderLayout.EAST);
JPanel panel = new JPanel(new BorderLayout(5, 5));
panel.setBorder(BorderFactory.createTitledBorder("AWTEventListener"));
JPanel box = new JPanel(new BorderLayout(5, 5));
box.add(textField);
box.add(combo, BorderLayout.EAST);
panel.add(box, BorderLayout.NORTH);
panel.add(new JScrollPane(log));
add(p, BorderLayout.NORTH);
setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
add(panel);
setPreferredSize(new Dimension(320, 240));
}
public void setTestConnected(boolean flag) {
String str = flag ? "<font color='blue'>Connected" : "<font color='red'>Not connected";
label.setText("<html>Status: " + str);
combo.setEnabled(flag);
textField.setEnabled(flag);
button.setEnabled(!flag);
}
private static JComboBox<String> makeComboBox() {
DefaultComboBoxModel<String> model = new DefaultComboBoxModel<>();
model.addElement("000");
model.addElement("123456");
model.addElement("0987654321");
model.addElement("41234123");
return new JComboBox<>(model);
}
public static void main(String[] args) {
EventQueue.invokeLater(MainPanel::createAndShowGui);
}
private static void createAndShowGui() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (UnsupportedLookAndFeelException ignored) {
Toolkit.getDefaultToolkit().beep();
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException ex) {
ex.printStackTrace();
return;
}
JFrame frame = new JFrame("@title@");
// frame.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
frame.getContentPane().add(new MainPanel());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
}