- oldSelStart
- The previous text offset of the cursor selection start position.
- oldSelEnd
- The previous text offset of the cursor selection end position.
- newSelStart
- The new text offset of the cursor selection start position.
- newSelEnd
- The new text offset of the cursor selection end position.
- candidatesStart
- The text offset of the current candidate text start position.
- candidatesEnd
- The text offset of the current candidate text end position.
This method is called when the selection or cursor in the current target input field has changed.