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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.FocusEvent;
import javax.swing.*;
import javax.swing.text.DefaultCaret;
public final class MainPanel extends JPanel {
private MainPanel() {
super(new BorderLayout());
JTextField field1 = makeTextField("setEnabled(false)");
field1.setEnabled(false);
JTextField field2 = makeTextField("setEditable(false)");
field2.setEditable(false);
JTextField field3 = makeTextField("DefaultCaret#setVisible(true)");
field3.setEditable(false);
field3.setCaret(new DefaultCaret() {
@Override public void focusGained(FocusEvent e) {
super.focusGained(e);
if (getComponent().isEnabled()) {
setVisible(true);
}
}
});
JTextField field4 = makeTextField("DefaultCaret#setBlinkRate(...)");
field4.setEditable(false);
field4.setCaret(new DefaultCaret() {
@Override public void focusGained(FocusEvent e) {
super.focusGained(e);
if (getComponent().isEnabled()) {
setBlinkRate(UIManager.getInt("TextField.caretBlinkRate"));
setVisible(true);
}
}
});
GridBagConstraints c = new GridBagConstraints();
c.insets = new Insets(8, 4, 8, 4);
c.anchor = GridBagConstraints.WEST;
JPanel p = new JPanel(new GridBagLayout());
c.gridy = 0;
p.add(new JLabel("Default: "), c);
c.gridy = 1;
p.add(new JLabel("setEnabled: "), c);
c.gridy = 2;
p.add(new JLabel("setEditable: "), c);
c.gridy = 3;
p.add(new JLabel("setVisible: "), c);
c.gridy = 4;
p.add(new JLabel("setBlinkRate: "), c);
c.gridx = 1;
c.weightx = 1.0;
c.fill = GridBagConstraints.HORIZONTAL;
c.gridy = 0;
p.add(makeTextField("Default JTextField"), c);
c.gridy = 1;
p.add(field1, c);
c.gridy = 2;
p.add(field2, c);
c.gridy = 3;
p.add(field3, c);
c.gridy = 4;
p.add(field4, c);
JMenuBar mb = new JMenuBar();
mb.add(LookAndFeelUtils.createLookAndFeelMenu());
EventQueue.invokeLater(() -> getRootPane().setJMenuBar(mb));
add(p, BorderLayout.NORTH);
setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
setPreferredSize(new Dimension(320, 240));
}
private static JTextField makeTextField(String txt) {
JTextField field = new JTextField(txt);
field.setOpaque(false);
field.setBorder(BorderFactory.createEmptyBorder());
field.setBackground(new Color(0x0, true)); // Nimbus?
return field;
}
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.EXIT_ON_CLOSE);
frame.getContentPane().add(new MainPanel());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
}
// @see SwingSet3/src/com/sun/swingset3/SwingSet3.java
final class LookAndFeelUtils {
private static String lookAndFeel = UIManager.getLookAndFeel().getClass().getName();
private LookAndFeelUtils() {
/* Singleton */
}
public static JMenu createLookAndFeelMenu() {
JMenu menu = new JMenu("LookAndFeel");
ButtonGroup buttonGroup = new ButtonGroup();
for (UIManager.LookAndFeelInfo info : UIManager.getInstalledLookAndFeels()) {
AbstractButton b = makeButton(info);
initLookAndFeelAction(info, b);
menu.add(b);
buttonGroup.add(b);
}
return menu;
}
private static AbstractButton makeButton(UIManager.LookAndFeelInfo info) {
boolean selected = info.getClassName().equals(lookAndFeel);
return new JRadioButtonMenuItem(info.getName(), selected);
}
public static void initLookAndFeelAction(UIManager.LookAndFeelInfo info, AbstractButton b) {
String cmd = info.getClassName();
b.setText(info.getName());
b.setActionCommand(cmd);
b.setHideActionText(true);
b.addActionListener(e -> setLookAndFeel(cmd));
}
private static void setLookAndFeel(String newLookAndFeel) {
String oldLookAndFeel = lookAndFeel;
if (!oldLookAndFeel.equals(newLookAndFeel)) {
try {
UIManager.setLookAndFeel(newLookAndFeel);
lookAndFeel = newLookAndFeel;
} catch (UnsupportedLookAndFeelException ignored) {
Toolkit.getDefaultToolkit().beep();
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException ex) {
ex.printStackTrace();
return;
}
updateLookAndFeel();
// firePropertyChange("lookAndFeel", oldLookAndFeel, newLookAndFeel);
}
}
private static void updateLookAndFeel() {
for (Window window : Window.getWindows()) {
SwingUtilities.updateComponentTreeUI(window);
}
}
}