[Bugs] #1352 HIGH: Prevent creating parent-less dialogs

[Sugar Labs Bugs]

#1352: Prevent creating parent-less dialogs
------------------------------+---------------------------------------------
    Reporter:  alsroot        |          Owner:  erikos  
        Type:  defect         |         Status:  new     
    Priority:  High           |      Milestone:  0.90    
   Component:  sugar-toolkit  |        Version:  0.85.x  
    Severity:  Major          |       Keywords:          
Distribution:  Unspecified    |   Status_field:  Assigned
------------------------------+---------------------------------------------
Changes (by tomeu):

  * owner:  tomeu => erikos
  * status_field:  Unconfirmed => Assigned
  * component:  sugar => sugar-toolkit
  * severity:  Unspecified => Major
  * milestone:  0.88 => 0.90


Comment:

 I agree on this, but would be an API change so needs to be done at the
 start of a release cycle so activities have time to adapt. do people
 agree?

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Ticket URL: <http://bugs.sugarlabs.org/ticket/1352#comment:3>
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