Core JFC Java Foundation Classes 2nd edition - Read

818 Chapter 7 Using Standard Dialogs
2. Get a reference to its ColorSelectionModel and register a
listener with it.
3. Display the dialog.
4. While the dialog is displayed, react to color changes by adjusting
the image (or whatever else the color change should apply
to).
5. When the dialog is dismissed, if the user pressed Cancel and
any changes were made to the image, restore the original color.
None of this is actually very difficult to achieve. Listing 7-15 shows an
example that uses this technique to keep the background color of a frame in
step with the color selected in a color chooser.
Listing 7-15 Handling JColorChooser Events
package JFCBook.Chapter7;
import javax.swing.*;
import j avax.swing.colorchooser.*;
import javax.swing.event.*;
import j ava.awt.*;
import java.awt.event.*;
public class ColorChooserExample2 {
public static void main(String[J args) {
final JFrame parentFrame =
new JFrame("Color Chooser Example 2");
parentFrame.getContentPane().setBackground(
Color.black);
parentFrame.setSize(300, 300);
parentFrame.setVisible(true);
parentFrame.getContentPane().addMouseListener(
new MouseAdapter() {
public void mousePressed(MouseEvent evt) {
final Color originalColor =
parentFrame.getContentPane () .getBackground () ;
final JColorChooser chooser =
new JColorChooser(originalColor)
final ColorSelectionModel model =
chooser.getSelectionModel0;