Swing Menus and Toolbars - The Definitive Guide to Java Swing - page 192

} else {
menuSelectionManager.processMouseEvent(mouseEvent);
}
}
// If mouse moves over menu item, add to selection path, so it becomes armed
public void mouseEntered(MouseEvent mouseEvent) {
MenuSelectionManager menuSelectionManager =
MenuSelectionManager.defaultManager();
menuSelectionManager.setSelectedPath(getPath());
}
// When mouse moves away from menu item, disarm it and select something else
public void mouseExited(MouseEvent mouseEvent) {
MenuSelectionManager menuSelectionManager =
MenuSelectionManager.defaultManager();
MenuElement path[] = menuSelectionManager.getSelectedPath();
if (path.length > 1) {
MenuElement newPath[] = new MenuElement[path.length-1];
for(int i=0, c=path.length-1; i<c; i++) {
newPath[i] = path[i];
}
menuSelectionManager.setSelectedPath(newPath);
}
}
// Pass along drag events
public void mouseDragged(MouseEvent mouseEvent) {
MenuSelectionManager.defaultManager().processMouseEvent(mouseEvent);
}
public void mouseClicked(MouseEvent mouseEvent) {
}
public void mousePressed(MouseEvent mouseEvent) {
}
public void mouseMoved(MouseEvent mouseEvent) {
}
};
addMouseListener(mouseInputListener);
addMouseMotionListener(mouseInputListener);
}
// MenuElement methods
public Component getComponent() {
return this;
}
public MenuElement[] getSubElements() {
// No subelements
return NO_SUB_ELEMENTS;
}