'Set this group\'s screen to new_screen'

def _setScreen(self, screen):

    if (screen == self.screen):
        return
    self.screen = screen
    if self.screen:
        self.floating_layout.to_screen(self, self.screen)
        self.layoutAll()
        rect = self.screen.get_rect()
        self.floating_layout.show(rect)
        self.layout.show(rect)
    else:
        self.hide()
