[pygtk] Scrolling to the previous position in a TreeView

[Neil Dugan]

Lionel Dricot wrote:
> Hello,
> 
> I'm displaying a treeview in my application and I update the content by
> creating a new treestore and then, once the treestore is create, I replace
> the old one with set_model.
> 
> Unfortunatly, the scroll position is not preserved and, at each refresh, the
> scroll go back to the top of the page.
> 
> I thought that it would be as simple as :
> 
> vadjust = self.treeview.get_vadjustment()
> ...
> refresh
> ...
> self.treeview.set_adjustement(vadjust)
> 
> But it doesn't work at all.
> 
> I've tried to set the value of vadjust, it has no effect.
> 
> What is strange is that if at any point I do a
> self.treeview.get_vadjustment().get_value(), I have the good value for the
> scrolling ! So the adjustment is good.
> 
> But then, why does my tree scroll to the top at each refresh ?
> 
> Can anybody help me ? How do you do when you want to keep a scrolled
> position ?
> 
> Thanks,
> 
> Lionel
> 
> 

Sometimes I find that a small delay helps.

# untested code
gobject.timeout_add(100, 
self.treeview.get_vadjustment().set_value(old_value))

The users wont notice a 1/10 second delay.

Regards Neil.