[fusion-trac] #471: Enhance the "MapTip" widget to disable/enable map tooltip

[Fusion]

#471: Enhance the "MapTip" widget to disable/enable map tooltip
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   Reporter:  hubu         |       Owner:  hubu     
       Type:  enhancement  |      Status:  new      
   Priority:  P2           |   Milestone:  2.3      
  Component:  Widgets      |     Version:  2.2 - RC1
   Severity:  Major        |    Keywords:  MapTip   
External_id:               |       State:  New      
    Browser:  All          |          Os:  All      
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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.
 This enhancement make the widget "Maptip" to be an button, so we can click
 it to 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 press the button again.
 By default, the tooltip is enabled, so it won't affect the original users.

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Ticket URL: <http://trac.osgeo.org/fusion/ticket/471>
Fusion <http://trac.osgeo.org/fusion>
Fusion is a web-mapping application development framework for MapServer and MapGuide OS.