[mapguide-trac] #1539: Script error when closing IE window / tab with the Quick Plot preview dialog open in Ajax viewer

[MapGuide Open Source]

#1539: Script error when closing IE window / tab with the Quick Plot preview
dialog open in Ajax viewer
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   Reporter:  wuma     |       Owner:  Mars Wu
       Type:  defect   |      Status:  new    
   Priority:  low      |   Milestone:         
  Component:  General  |     Version:  2.2.0  
   Severity:  trivial  |    Keywords:         
External_id:  1367734  |  
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 In Ajax Viewer, if we close the IE browser's window or tab while the Quick
 Plot preview dialog is still open, there will be a script error.

 It happens only in IE with compressed jxlib.js. The reason is,
 quickplotpanel page has a unloade event handler which will close the
 preview dialog. The event handler invokes the PreviewDialog.cancel() to
 close the dialog. While cancel() just "fades out" the dialog to have a
 good visual effect. In IE, the web page will be closed before the "fade
 out" process finishes, then an error will occur.

 The solution is: don't use "fade out" effect. Instead, just completely
 remove the Jx.Dialog element from mapFrame. A method
 PreviewDialog.dispose() is implemented to do this.

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Ticket URL: <http://trac.osgeo.org/mapguide/ticket/1539>
MapGuide Open Source <http://mapguide.osgeo.org/>
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