In fact, on all full deltas planes (as Mirages, Viggen, F-102, etc...), there aren't any flaps due to elevons using. Elevons downs = pitch down...
But today, with fly-by-wire controls and canard configuration, a kind of flaps can be produce : elevons down are balanced by canards... ;)
So, on gripen landings, you can see elevons slightly downs and canards up.
This will be reproduced on the Gripen 3D model... ;)
Then, after watching a lot of pictures and videos, all elevons from each wing seem to work together, and I did not find any evidence canards can work independently...