Returns the rectangle in which editable text can be displayed.
- iOS 2.0+
- tvOS 9.0+
The bounding rectangle of the receiver.
The computed editing rectangle for the text.
You should not call this method directly. If you want to provide a different editing rectangle for the text, you can override this method and return that rectangle. By default, this method returns a region in the text field that is not occupied by any overlay views.