#7625 NORM 8.2.0 (: alt+tab switching is slow because activities are notified unneccessary

[Zarro Boogs per Child]

#7625: alt+tab switching is slow because activities are notified unneccessary
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   Reporter:  benzea  |       Owner:  marco                       
       Type:  defect  |      Status:  new                         
   Priority:  normal  |   Milestone:  8.2.0 (was Update.2)        
  Component:  sugar   |     Version:  not specified               
 Resolution:          |    Keywords:  UI, performance, 8.2.0:?, r-
Next_action:  review  |    Verified:  0                           
  Blockedby:          |    Blocking:                              
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Comment(by benzea):

 Replying to [comment:2 marco]:
 {{{
 +    def _activate_activity(self, home_activity):
 +        if not home_activity:
 +            return
 }}}

 > In which case does this happen? Shouldn't we unselect the current
 selection when it does?

 This happens when the tabbing-activity is set to None. I can just move the
 check into __tabbing_activity_changed_cb, maybe it is more obvious then.

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Ticket URL: <http://dev.laptop.org/ticket/7625#comment:6>
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