Thanks Sascha and Flavio. a) I modified the code to :: #################################################################################### def __favorite_set_data_cb(self, column, cell, tree_model, tree_iter): favorite = tree_model[tree_iter][ListModel.COLUMN_FAVORITE] if favorite: client = gconf.client_get_default() color = XoColor(client.get_string('/desktop/sugar/user/color')) cell.props.xo_color = color else: cell.props.xo_color = None <VAR>.get_property('window').invalidate_rect(<VAR>.get_allocation(), False) <VAR>.get_property('window').process_updates(True) #################################################################################### where I tried with values of <VAR> to :: * self * self.tree_view However, it made no difference. b) I modified the code to :: #################################################################################### def __favorite_set_data_cb(self, column, cell, tree_model, tree_iter): favorite = tree_model[tree_iter][ListModel.COLUMN_FAVORITE] if favorite: client = gconf.client_get_default() color = XoColor(client.get_string('/desktop/sugar/user/color')) cell.props.xo_color = color else: cell.props.xo_color = None <VAR>.get_property('window').invalidate_rect(<VAR>.get_allocation(), True) <VAR>.get_property('window').process_updates(True) #################################################################################### where I tried with values of <VAR> to :: * self * self.tree_view However, it caused an infinite recursive loop, and the journal never loaded. c) I modified the code to :: #################################################################################### def __favorite_set_data_cb(self, column, cell, tree_model, tree_iter): favorite = tree_model[tree_iter][ListModel.COLUMN_FAVORITE] if favorite: client = gconf.client_get_default() color = XoColor(client.get_string('/desktop/sugar/user/color')) cell.props.xo_color = color else: cell.props.xo_color = None <VAR>.get_property('window').invalidate_rect(<VAR>.get_allocation(), False) <VAR>.get_property('window').process_updates(True) #################################################################################### where I tried with values of <VAR> to :: * column * cell However, it caused the following traceback :: Traceback (most recent call last): File "/home/ajay/sugar-jhbuild-dx3/install/lib/python2.7/site-packages/jarabe/journal/listview.py", line 329, in __favorite_set_data_cb column.get_property('window').invalidate_rect(column.get_allocation(), False) TypeError: object of type `GtkTreeViewColumn' does not have property `window' d) I modified the code to :: #################################################################################### def __favorite_set_data_cb(self, column, cell, tree_model, tree_iter): favorite = tree_model[tree_iter][ListModel.COLUMN_FAVORITE] if favorite: client = gconf.client_get_default() color = XoColor(client.get_string('/desktop/sugar/user/color')) cell.props.xo_color = color else: cell.props.xo_color = None <VAR>.get_property('window').invalidate_rect(<VAR>.get_allocation(), True) <VAR>.get_property('window').process_updates(True) #################################################################################### where I tried with values of <VAR> to :: * column * cell Same as before - it caused the following traceback :: Traceback (most recent call last): File "/home/ajay/sugar-jhbuild-dx3/install/lib/python2.7/site-packages/jarabe/journal/listview.py", line 329, in __favorite_set_data_cb column.get_property('window').invalidate_rect(column.get_allocation(), False) TypeError: object of type `GtkTreeViewColumn' does not have property `window' :-\ Regards, Ajay <div class="gmail_quote">On Tue, Jul 31, 2012 at 7:07 AM, Flavio Danesse <<a href="mailto:fdanesse@gmail.com" target="_blank">fdanesse@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div>self.get_property('window').invalidate_rect(self.get_allocation(), True)</div><div>self.get_property('window').process_updates(True)</div> <div> </div><div> </div><div> </div> <div class="gmail_quote"> 2012/7/30 Sascha Silbe <<a href="mailto:silbe@activitycentral.com" target="_blank">silbe@activitycentral.com</a>> <blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"> <div><div class="h5"> <div>Ajay Garg <<a href="mailto:ajay@activitycentral.com" target="_blank">ajay@activitycentral.com</a>> writes: >> [adding short-circuit logic to >> jarabe.journal.listview.BaseListView.refresh()] </div>[...] <div>>> What we should do is enhancing the logic to >> >> a) just redraw instead of querying the back-end again for changes we >> triggered ourselves and / or >> b) update our model based on the change notifications rather than >> throwing away our state. >> > > Well, that's exactly what I did, via the patch > <a href="http://git.sugarlabs.org/dextrose/mainline/commit/ad3897946e013f1ff4020aeab35375ccb122758b" target="_blank">http://git.sugarlabs.org/dextrose/mainline/commit/ad3897946e013f1ff4020aeab35375ccb122758b</a> </div>Not really AFAICT. You're still inhibiting the refresh completely, without doing a redraw. You're also doing a gratuitous data store query for each favourite star. I'm expecting that to have considerable impact on performance. <div> > I guess, if we could somehow cause the mouse to PROGRAMMATICALLY > hover-away/disappear-momentarily when the star/favorite-icon is clicked, we > could be done. > However, I am not able to find a way to do this via pygtk. </div>Fortunately. :-P As discussed on IRC, the way to _trigger_ _a_ _redraw_ (not: move the pointer) is something like this: x_, y_, width, height = self.allocation area = (0, 0, width, height) self.window.invalidate_rect(area, False) <div><div> Sascha -- <a href="http://sascha.silbe.org/" target="_blank">http://sascha.silbe.org/</a> <a href="http://www.infra-silbe.de/" target="_blank">http://www.infra-silbe.de/</a> </div></div> </div></div><div class="im">_______________________________________________ Sugar-devel mailing list <a href="mailto:Sugar-devel@lists.sugarlabs.org" target="_blank">Sugar-devel@lists.sugarlabs.org</a> <a href="http://lists.sugarlabs.org/listinfo/sugar-devel" target="_blank">http://lists.sugarlabs.org/listinfo/sugar-devel</a> </div></blockquote></div> </blockquote></div>