display.py 文件源码

def Widget(self, widget):
        """Setter for topmost widget, used to switch view modes.

        @widget - widget instance, most probably ur.Frame

        Assigns a new topmost widget to be displayed, essentially
        allowing us to switch between modes, like board view,
        main menu, etc.
        """
        self._widget_stack.append(widget)
        self.widget = widget