Rightclicking on components

[Emil Karlsson]

Hi,
I have made a class that extend a JButton, now I would like to show a popup when I make a rightclick over the component!
The same procedure works perfect with JLabel!
Why does it not work with JButton?
/Emil Karlsson

[Chantal Ackermann]

some code of yours would be helpful. especially, where you catch the popup events for your JLabel and for your JButton.
are you checking whether the mouse event is a popup trigger? (event.isPopupTrigger())
chantal

[Nathan Pruett]

I don't know how to do it with your extended button, since you didn't post the code... but here's how you can add a popup menu to a normal JButton...

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
 
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JPopupMenu;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.WindowConstants;
 
public class ButtonPopupTest extends JFrame implements ActionListener {
 
private JTextArea ta;
 
public ButtonPopupTest() {
super( "ButtonPopupTest" );
ta = new JTextArea();
getContentPane().add( new JScrollPane( ta ) );

JPanel buttonPanel = new JPanel();
JButton b = new JButton( "Click Me!" );
b.addActionListener( this );
b.addMouseListener( new MouseAdapter() {
public void mousePressed( MouseEvent evt ) {

if ( evt.isMetaDown() ) {

JPopupMenu menu = new JPopupMenu();
for ( int i = 0; i < 5; i++ ) {
JMenuItem m = new JMenuItem( "Item " + (i+1) );
m.addActionListener( ButtonPopupTest.this );
menu.add( m );
}
menu.show( (JButton)evt.getSource(), evt.getX(), evt.getY() );
}
}
} );
buttonPanel.add( b );
getContentPane().add( buttonPanel, BorderLayout.SOUTH );
}

public void actionPerformed( ActionEvent evt ) {
ta.append( "\n" + evt.getActionCommand() + " clicked\n" );
}

public static void main(String[] args) {
JFrame f = new ButtonPopupTest();
f.setDefaultCloseOperation( WindowConstants.EXIT_ON_CLOSE );
f.setSize( 400, 400 );
f.show();
}
}

( Chantal - for some weird reason isPopupTrigger() wouldn't work... I had to use isMetaDown()... )

[Emil Karlsson]

Thanks a lot.
Now it works as I want.
/Emil