Detect active tool in Python add-in

Hi there,

Can anybody tell me if there is a way to detect the active tool within a python add-in?
I'm intending to use the onCurrentTaskChanged event but I only want use it when the user is using a split tool or a topology change tool.
So is it possible to find out which tool the user is currently using?

Any help on this is much appreciated.

Cheers,

Anke