viz refresh button doesn't refresh

I should have said: I am using a mirror branch of bzr.dev and of lp:bzr-gtk, both kept up to date. My bzr-gtk branch reports revision 667 as the latest.

Fixing this might be a bit complicated. All the info used to populate the viz window comes from a branch object passed to the BranchWindow object. This branch object is constructed in ./commands.py and the magic that happens around lines 182-190 is a bit hard to grasp for me. Seems like you can construct a branch object build up from different locations, pass in some sort of list or revision object.
The bzr Branch object API does not seem to give a method to determine the branch location, the branch object has an update method but that tries to get new revisions from a parent branch, I did not find a method that would refresh the contents of the branch so it seems the branch object must be constructed again (this is what happens in Olive when you press refresh btw).

So, I think fixing this involves moving the magic from commands.py into the BranchView object so that it can be invoked on a refresh in the _refresh_clicked method on the BrandView object.

Any comments from Scott Remnant or another expert? :)