[mapguide-users] OnSelection Event?

Thu Jan 8 18:12:06 EST 2009

This is javascript code that hooks onto events from the viewer frame. 

So the code should go in the page that launches the viewer frame.

A more detailed explaination here:
http://trac.osgeo.org/mapguide/wiki/CodeSamples/JavaScript/AJAXViewerEventHooking

- Jackie

clarkie342 wrote:
> 
> 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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> 
> 

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