[mapguide-users] Viewer API Selection Timing Issues

[Bruce Dechant]

RFC 15 has already been approved and the code changes have already been submitted.
Please see: http://trac.osgeo.org/mapguide/wiki/MapGuideRfc15
 
If you build from the source now you will be able to use the new functionality provided by RFC 15.
 
Thanks,
Bruce

	-----Original Message----- 
	From: mapguide-users-bounces at lists.osgeo.org on behalf of Scott Hameister 
	Sent: Thu 3/15/2007 3:32 PM 
	To: 'MapGuide Users Mail List' 
	Cc: 
	Subject: RE: [mapguide-users] Viewer API Selection Timing Issues
	
	

	RFC 15 should solve this problem in the AJAX viewer when/if it makes it through

	 

	
  _____  


	From: mapguide-users-bounces at lists.osgeo.org [mailto:mapguide-users-bounces at lists.osgeo.org] On Behalf Of Buscher, Shane
	Sent: Thursday, March 15, 2007 10:02 AM
	To: Mapguide_users at lists.osgeo.org
	Subject: [mapguide-users] Viewer API Selection Timing Issues

	 

	I may be going about this the wrong way, but here’s my problem.  I want to  select a feature based on an attribute query in the task pane, automatically zoom to it, and highlight it.  I have found highlighting the feature to be the most problematic because the feature has to exist within the map frame extent before it can be selected with the SetSelectionXML() Viewer api function. As far as I know, this is the only function call you can make in MapGuide to highlight features.  

	Knowing that SetSelectionXML() will only highlight features in the current map extent, I preceded to zoom to the feature (ZoomToView) before calling SetSelectionXML().  The problem is that the map can’t zoom quick enough, and so no features are highlighted:

	ZoomToView(x, y, scale);   

	SetSelectionXML(xmlSet);  //no features exist yet because of delay in ZoomToView 

	I don’t have any problems when the feature already exists in my map extent.  Does anyone have a workaround or better method to accomplish this?  The only hack can think of is to pause the execution of SetSelectionXML() until ZoomoView is complete, but I’m not sure the best way to code this.  

	Regards,

	Shane

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