menu.py 文件源码

def display(self):
        self.window.clear()
        while True:
            self.window.refresh()
            curses.doupdate()
            for index, item in enumerate(self.items):
                if index == self.position:
                    mode = curses.A_REVERSE
                else:
                    mode = curses.A_NORMAL

                msg = '- %s\n   (Features: %s, Design: %s)' % (item, item.features, item.design_need)
                self.window.addstr(1+index*2, 2, msg, mode)

            key = self.window.getch()

            if key in [curses.KEY_ENTER, ord('\n')]:
               if self.position == len(self.items)-1:
                   return None
               else:
                   return self.position

            if key == curses.KEY_UP:
                self.navigate(-1)

            elif key == curses.KEY_DOWN:
                self.navigate(1)