[Bugs] #1447 NORM: Display a message when an activity fails to start

[Sugar Labs Bugs]

#1447: Display a message when an activity fails to start
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    Reporter:  wadeb        |          Owner:  alsroot          
        Type:  enhancement  |         Status:  assigned         
    Priority:  Normal       |      Milestone:  0.90             
   Component:  sugar        |        Version:  Git as of bugdate
    Severity:  Unspecified  |       Keywords:  r! olpc-0.84     
Distribution:  Unspecified  |   Status_field:  Unconfirmed      
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Comment(by alsroot):

 sugar-toolkit patch is reusing NotifyLaunchFailure dbus method to notify
 shell about not successful activity termination (activity could already
 show main window) but sugar part will proper handle this. At the end
 wadeb's new dbus method will make code cleaner, I just not sure can we
 introduce new dbus API changes for 0.88 and for 0.84 (for XO-1.5).

 sugar patch is based on wabeb's with just removing NotifyActivityEnded
 dbus call. If GUI part is a blocker for inclusion to 0.88, I guess it
 could be simplified to just showing "Stop" button.

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Ticket URL: <https://bugs.sugarlabs.org/ticket/1447#comment:19>
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