qgis/QGIS — pull request #1163 by 3nids (2014-02-11 14:16:07+00:00)
Title: enable part/ring actions only if layer is multipart

All in the tile ;)

This will not enable action related to multipart (add/fill/delete ring, add/delete/split part).

I think it's a lot clearer when you search for icons!