Android InputConnection: get notified when selection changes

Question

I want my InputMethodService to switch to capitals when the cursor is positioned after a period ('.') and spaces. The trick is to get notified when the cursor is re-positioned. The cursor may get positioned after a period when either:

1. user inputs period, or
2. user touches the screen, or
3. user pastes some text.

Question: how do I get the InputMethodService notified of selection changes and text pasting?

Answer 1

There is InputMethodService.onUpdateSelection (int oldSelStart, int oldSelEnd, int newSelStart, int newSelEnd, int candidatesStart, int candidatesEnd) that does the trick.

You could try to find something like that in InputConnection (like I did), but there's no InputConnection.getSelection() or InputConnection.onSelectionChanged().