[mapguide-users] OnSelection Event?

Thu Jan 8 15:40:35 EST 2009

Hi Jason,

I am trying to implement your suggestion below to make use of the
OnSelectionChanged Event Handler in mainframe.templ
I have a asp.net page with iframe showing a mapguide map. I want to be able
to do bunch of things when the user selects features on this map. 
I am not very clear on how you are implementing your SelectionChanged
function instead of the original one. Where should this script go?
Appreciate your help.

Thanks

Jason Birch wrote:
> 
>  
> There is an OnSelectionChanged function in the main frame, but it doesn't
> appear to be documented.
>  
> I've just tried playing around with this, and I got the following to work
> when inserted into the <head> of the ajaxviewersample.php file.  It does
> not appear to work with the DWF viewer; maybe why it's not documented?  Or
> it could just be that my code is bad :)
>  
> <script type="text/javascript" >
>                               
> var originalOnSelectionChanged;
> var initTimer = setInterval(watchInitialized, 200);
> 
> function watchInitialized () {
>  try {
>   if(ViewerFrame.mapFrame.mapInit) 
>     {
>    clearInterval(initTimer);
>    originalOnSelectionChanged = ViewerFrame.OnSelectionChanged;
>    ViewerFrame.OnSelectionChanged = MyOnSelectionChangedHandler;
>     }
>    }
>    catch(Exception) {}
> }
> 
> function MyOnSelectionChangedHandler() {
>    originalOnSelectionChanged ();
>    var mapFrame = ViewerFrame.GetMapFrame();
>    selCount = mapFrame.GetSelectedCount();
>    alert("Selected: " + selCount);
> }
>  
> </script>
> 
>  
> 
> ________________________________
> 
> From: Willem Schwarte [mailto:willem at giskit.nl]
> Subject: [mapguide-users] OnSelection Event?
> 
> 
> I suppose there is no onSelectionChanged event like in MG6.5. So this
> would be done on a onClick? Where would I put the code for this?
> 
>  
> 
> 
>  
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