Pop-Ups and Choosers - The Definitive Guide to Java Swing - page 313

final JColorChooser colorChooser =
new JColorChooser(initialBackground);
SystemColorChooserPanel newChooser =
new SystemColorChooserPanel();
// AbstractColorChooserPanel chooserPanels[] = {newChooser};
// colorChooser.setChooserPanels(chooserPanels);
colorChooser.addChooserPanel(newChooser);
// For okay button, change button background to selected color
ActionListener okActionListener = new ActionListener() {
public void actionPerformed(ActionEvent actionEvent) {
Color newColor = colorChooser.getColor();
if (newColor.equals(button.getForeground())) {
System.out.println("Color change rejected");
} else {
button.setBackground(colorChooser.getColor());
}
}
};
// For cancel button, change button background to red
ActionListener cancelActionListener = new ActionListener() {
public void actionPerformed(ActionEvent actionEvent) {
button.setBackground(Color.RED);
}
};
final JDialog dialog =
JColorChooser.createDialog(
null, "Change Button Background", true, colorChooser,
okActionListener, cancelActionListener);
// Wait for current event dispatching to complete before showing
Runnable showDialog = new Runnable() {
public void run() {
dialog.setVisible(true);
}
};
EventQueue.invokeLater(showDialog);
}
};
button.addActionListener(actionListener);
frame.add(button, BorderLayout.CENTER);