[Mapguide-trac] [mapguide-trac] #2203: SelectByGeometry with callback notification

[MapGuide Open Source]

#2203: SelectByGeometry with callback notification
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   Reporter:  jng          |       Owner:  jng
       Type:  enhancement  |      Status:  new
   Priority:  low          |   Milestone:     
  Component:  Desktop API  |     Version:     
   Severity:  trivial      |    Keywords:     
External_id:               |  
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 The current IMapViewer.SelectByGeometry API does not allow for one-shot
 notifications if the method call actually changes the selection.

 The current (naive) ugly approach would be to subscribe to
 SelectionChanged, call the SelectByGeometry method and un-subscribe from
 the event if the handler is called, which is ugly and cumbersome.

 Instead, we should have an overload of SelectByGeometry that allows for a
 System.Action to be passed in that is called when the internal selection
 has been modified, avoiding the need to do this event subscription mess

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Ticket URL: <http://trac.osgeo.org/mapguide/ticket/2203>
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