ColorChooserTest

import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.event.*; public class ColorChooserTest { public static void main(String[] args) { ColorChooserFrame frame = new ColorChooserFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); } } /** A frame with a color chooser panel */ class ColorChooserFrame extends JFrame { public ColorChooserFrame() { setTitle("ColorChooserTest"); setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT); // add color chooser panel to frame ColorChooserPanel panel = new ColorChooserPanel(); add(panel); } public static final int DEFAULT_WIDTH = 300; public static final int DEFAULT_HEIGHT = 200; } /** A panel with buttons to pop up three types of color choosers */ class ColorChooserPanel extends JPanel { public ColorChooserPanel() { JButton modalButton = new JButton("Modal"); modalButton.addActionListener(new ModalListener()); add(modalButton); JButton modelessButton = new JButton("Modeless"); modelessButton.addActionListener(new ModelessListener()); add(modelessButton); JButton immediateButton = new JButton("Immediate"); immediateButton.addActionListener(new ImmediateListener()); add(immediateButton); } /** This listener pops up a modal color chooser */ private class ModalListener implements ActionListener { public void actionPerformed(ActionEvent event) { Color defaultColor = getBackground(); Color selected = JColorChooser.showDialog( ColorChooserPanel.this, "Set background", defaultColor); if (selected != null) setBackground(selected); } } /** This listener pops up a modeless color chooser. The panel color is changed when the user clicks the Ok button. */ private class ModelessListener implements ActionListener { public ModelessListener() { chooser = new JColorChooser(); dialog = JColorChooser.createDialog( ColorChooserPanel.this, "Background Color", false /* not modal */, chooser, new ActionListener() // OK button listener { public void actionPerformed(ActionEvent event) { setBackground(chooser.getColor()); } }, null /* no Cancel button listener */); } public void actionPerformed(ActionEvent event) { chooser.setColor(getBackground()); dialog.setVisible(true); } private JDialog dialog; private JColorChooser chooser; } /** This listener pops up a modeless color chooser. The panel color is changed immediately when the user picks a new color. */ private class ImmediateListener implements ActionListener { public ImmediateListener() { chooser = new JColorChooser(); chooser.getSelectionModel().addChangeListener(new ChangeListener() { public void stateChanged(ChangeEvent event) { setBackground(chooser.getColor()); } }); dialog = new JDialog( (Frame) null, false /* not modal */); dialog.add(chooser); dialog.pack(); } public void actionPerformed(ActionEvent event) { chooser.setColor(getBackground()); dialog.setVisible(true); } private JDialog dialog; private JColorChooser chooser; } }