[mapguide-trac] #1765: Add a new command "MapTip" to enable/disable map tootips

[MapGuide Open Source]

#1765: Add a new command "MapTip" to enable/disable map tootips
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   Reporter:  hubu         |       Owner:  hubu                   
       Type:  enhancement  |      Status:  new                    
   Priority:  medium       |   Milestone:  2.3                    
  Component:  AJAX Viewer  |     Version:  2.2.0                  
   Severity:  trivial      |    Keywords:  tooltips enable/disable
External_id:               |  
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 Currently in MapGuide, the client sends "QueryMapFeatures?" request to get
 the tooltips every time we move the cursor. However, most of the requests
 are unnecessary and useless for the end-user. For example, when the user
 are doing measure/pan/zoom, the tooltips are redundant for the user. If we
 remove these unnecessary requests, we can reduce server's overload.

 With this widget,we can enable\disable the map tooltips. Then the user has
 an opportunity to disable the map tooltip to reduce server's overload, and
 the user still can enable the tooltips again.

 By default, the tooltip is enabled, so it won't affect the original users.

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Ticket URL: <https://trac.osgeo.org/mapguide/ticket/1765>
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