public static IObservable <int> CursorPosition(this UITextView textView)
=> Observable.Create <int>(observer =>
{
var selectedTextRangeDisposable = textView.AddObserver(
selectedTextRangeChangedKey,
NSKeyValueObservingOptions.OldNew,
_ => observer.OnNext((int)textView.SelectedRange.Location)
);
return(selectedTextRangeDisposable);
})
.StartWith((int)textView.SelectedRange.Location);
