[Bugs] #2608 UNSP: Cursor moves to beginning while trying to edit activity instance name

[Sugar Labs Bugs]

#2608: Cursor moves to beginning while trying to edit activity instance name
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    Reporter:  m_anish                    |          Owner:                             
        Type:  defect                     |         Status:  assigned                   
    Priority:  Unspecified by Maintainer  |      Milestone:  Unspecified by Release Team
   Component:  sugar-toolkit              |        Version:  Unspecified                
    Severity:  Unspecified                |       Keywords:  r? 11.2.0                  
Distribution:  Unspecified                |   Status_field:  New                        
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Comment(by dsd):

 I briefly revisited old discussions on this issue and I did some thinking,
 and I think the following approach is sensible:

  * If the instance name textbox has the gtk.HAS_FOCUS flag, ignore all
 updates from datastore (don't update title)
  * Update the title widget with the new title if the datastore sends an
 update and the textbox isn't focused

  * Write the new title to the datastore on the focus-out event.
  * If editing the title then clicking the Stop button doesn't cause a
 focus-out event, and it can't be seen how to obviously make that focus-out
 event occur before Stop's clicked event is triggered, make the activity
 stop handler look for changes in the activity title and update the
 datastore if necessary

 I think this should solve all the issues that were raised before, but I
 might have missed something.

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Ticket URL: <http://bugs.sugarlabs.org/ticket/2608#comment:10>
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