public final class ContextMenu

The right-click menu.

Codename One has carried the event for a long time – Component#addContextMenuListener(ActionListener) fires on a secondary mouse button, a stylus barrel button or a long press – and has never had anything that turns it into a menu. Every application that wanted one built its own popup, which is why none of them looked like the platform.

Two ways in. Give a component its commands and the menu appears by itself:

label.setContextMenuCommands(cut, copy, paste);

Or open it from a listener, when the commands depend on what was clicked:

table.addContextMenuListener(e -> {
    ContextMenu.show(table, e.getX(), e.getY(), commandsFor(rowAt(e.getY())));
    e.consume();
});

The menu is an anchored popup, which means it is drawn inside the application’s surface rather than in a window of its own – deliberately, and for the same reasons Dialog#showPopupDialog(Rectangle) gives: the rectangle it points at is in its host’s coordinate space, a separate window would never receive the click meant to dismiss it, and it would steal focus from its opener every time it appeared. It is styled through PopupContentPane and Command, which the desktop native themes define.

A null or empty command array opens nothing. That is not a special case to work around: a menu with no items is a rectangle the user has to dismiss to learn it was empty.