Create Color Sample Popup
/*
Definitive Guide to Swing for Java 2, Second Edition
By John Zukowski
ISBN: 1-893115-78-X
Publisher: APress
*/
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JColorChooser;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.SwingUtilities;
public class CreateColorSamplePopup {
public static void main(String args[]) {
JFrame frame = new JFrame("JColorChooser Create Popup Sample");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Container contentPane = frame.getContentPane();
final JButton button = new JButton("Pick to Change Background");
ActionListener actionListener = new ActionListener() {
public void actionPerformed(ActionEvent actionEvent) {
Color initialBackground = button.getBackground();
final JColorChooser colorChooser = new JColorChooser(
initialBackground);
// colorChooser.setPreviewPanel(new JPanel());
final JLabel previewLabel = new JLabel("I Love Swing",
JLabel.CENTER);
previewLabel.setFont(new Font("Serif", Font.BOLD | Font.ITALIC,
48));
colorChooser.setPreviewPanel(previewLabel);
// Bug workaround
colorChooser.updateUI();
// For okay button selection, 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 selection, 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 until current event dispatching completes before showing
// dialog
Runnable showDialog = new Runnable() {
public void run() {
dialog.show();
}
};
SwingUtilities.invokeLater(showDialog);
}
};
button.addActionListener(actionListener);
contentPane.add(button, BorderLayout.CENTER);
frame.setSize(300, 100);
frame.setVisible(true);
}
}
Related examples in the same category
