An encapsulation of information about a selected range of text in a document.
- iOS 6.0+
- tvOS 9.0+
This class is an abstract class and must be subclassed to be used. The system text input views provide their own concrete implementations of this class.
If you are implementing a custom text input view, you can subclass and use your custom class to return selection-related information. When subclassing, you should override and reimplement all properties. In your custom implementations, do not call