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

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#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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Changes (by benzea):

  * keywords:  UI, performance, 8.2.0:?, r- => UI, performance, 8.2.0:?, r?


Comment:

 OK, here a new version of the patches that fixes everything that marco
 pointed out.
 I decided to explicitly select the active-activity when the tabbing-
 activity is set to None.

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Ticket URL: <http://dev.laptop.org/ticket/7625#comment:7>
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