JFrame frame = new JFrame("PopUpColorMenu v1.0");
final JPopupMenu colorMenu = new JPopupMenu("Color");
colorMenu.add(makeMenuItem("Red"));
colorMenu.add(makeMenuItem("Green"));
colorMenu.add(makeMenuItem("Blue"));
MouseListener mouseListener = new MouseAdapter() {
public void mousePressed(MouseEvent e) { checkPopup(e); }
public void mouseClicked(MouseEvent e) { checkPopup(e); }
public void mouseReleased(MouseEvent e) { checkPopup(e); }
private void checkPopup(MouseEvent e) {
if (e.isPopupTrigger( )) {
selectedComponent = e.getComponent( );
colorMenu.show(e.getComponent(), e.getX(), e.getY( ));
}
}
};
Container content = frame.getContentPane(); // unecessary in 1.5+
content.setLayout(new FlowLayout( ));
JButton button = new JButton("Uno");
button.addMouseListener(mouseListener);
content.add(button);
button = new JButton("Due");
button.addMouseListener(mouseListener);
content.add(button);
button = new JButton("Tre");
button.addMouseListener(mouseListener);
content.add(button);
frame.getContentPane().addMouseListener(mouseListener);
frame.setSize(200,50);
frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
frame.setVisible(true);
