lessonfilegui.py 文件源码

def _menu_hide_stuff(self, menu):
        """
        Hide the menu if it has no menu items, or all menu items are hidden.
        """
        for sub in menu.get_children():
            assert isinstance(sub, Gtk.MenuItem)
            if sub.get_submenu():
                self._menu_hide_stuff(sub.get_submenu())

                if not [c for c in sub.get_submenu().get_children() if c.get_property('visible')]:
                    sub.hide()