selection.py 文件源码

def on_key(self, ch):
        if ch == curses.KEY_LEFT:
            if self.selected > 0:
                self.selected -= 1

        elif ch == curses.KEY_RIGHT:
            if self.selected + 1 < len(self.items):
                self.selected += 1

        else:
            return False

        self.value = self.items[self.selected]
        self.update()
        return True