#3657 HIGH Untriag: XOs in Neighborhood should become outlines when "dropped" from network

[Zarro Boogs per Child]

#3657: XOs in Neighborhood should become outlines when "dropped" from network
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 Reporter:  Eben    |       Owner:  marco    
     Type:  defect  |      Status:  new      
 Priority:  high    |   Milestone:  Untriaged
Component:  sugar   |     Version:           
 Keywords:          |    Verified:  0        
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 Right now, icons have binary state in the Neighborhood view: present or
 not.  This creates a rather harsh view, as icons blink on and off, and
 occasionally move around when doing so without reason.

 Taking into account the uncertainties in the network topology, we need to
 lessen this effect by rendering XOs that seem to have dropped off as white
 outlines, retaining their position.  If they return to the network within
 some interval of time, their XO will simply re-color in place. If not, the
 white outline will disappear completely until they return, at which point
 position is again arbitrary (unless they are in a group, of course).

 Note that we could define a threshold for signal strength below which we
 render them this way, but before they actually drop off, but I highly
 doubt we have such info.

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Ticket URL: <https://dev.laptop.org/ticket/3657>
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