[Request] 获取当前是否有选区，和选区部分的内容

[canisminor1990]

🥰 需求描述 | Feature Description

• 获取当前是否有选区，和选区部分的内容 (多格式)

[lobehubbot]

👀 @canisminor1990
Thank you for raising an issue. We will investigate into the matter and get back to you as soon as possible.
Please make sure you have given us as much context as possible.
非常感谢您提交 issue。我们会尽快调查此事，并尽快回复您。 请确保您已经提供了尽可能多的背景信息。