public void mousePressed(MouseEvent e) {
MenuSelectionManager manager = MenuSelectionManager.defaultManager();
JMenu menu = (JMenu) menuItem;
manager.processMouseEvent(e);
// Menu should be displayed when the menu is pressed only if
// it is top-level menu
if (menu.isTopLevelMenu()) {
if (menu.getPopupMenu().isVisible())
// If menu is visible and menu button was pressed..
// then need to cancel the menu
manager.clearSelectedPath();
else {
// Display the menu
int x = 0;
int y = menu.getHeight();
manager.setSelectedPath(getPath());
JMenuBar mb = (JMenuBar) menu.getParent();
// set selectedIndex of the selectionModel of a menuBar
mb.getSelectionModel().setSelectedIndex(mb.getComponentIndex(menu));
}
}
}
public void mouseEntered(MouseEvent e) {
/* When mouse enters menu item, it should be considered selected
if (i) if this menu is a submenu in some other menu
(ii) or if this menu is in a menu bar and some other menu in a menu bar was just
selected. (If nothing was selected, menu should be pressed before
it will be selected)
*/
JMenu menu = (JMenu) menuItem;
if (!menu.isTopLevelMenu()
|| (menu.isTopLevelMenu()
&& (((JMenuBar) menu.getParent()).isSelected() && !menu.isArmed()))) {
// set new selection and forward this event to MenuSelectionManager
MenuSelectionManager manager = MenuSelectionManager.defaultManager();
manager.setSelectedPath(getPath());
manager.processMouseEvent(e);
}
}
/**
* This method is called when menu is selected. It sets selected index in the selectionModel of
* the menu parent.
*
* @param e The MenuEvent.
*/
public void menuSelected(MenuEvent e) {
JMenu menu = (JMenu) menuItem;
if (menu.isTopLevelMenu()) ((JMenuBar) menu.getParent()).setSelected(menu);
else ((JPopupMenu) menu.getParent()).setSelected(menu);
}
/**
* This method is called when menu is deselected. It clears selected index in the selectionModel
* of the menu parent.
*
* @param e The MenuEvent.
*/
public void menuDeselected(MenuEvent e) {
JMenu menu = (JMenu) menuItem;
if (menu.isTopLevelMenu()) ((JMenuBar) menu.getParent()).getSelectionModel().clearSelection();
else ((JPopupMenu) menu.getParent()).getSelectionModel().clearSelection();
}