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<title>Custom OnSelection Events - a better way?</title>
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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>On that same post Jason Birch wrote an
override for the OnSelectionChanged Event and placed it in the page where he
called his viewer.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><a
href="http://www.nabble.com/RE%3A-OnSelection-Event--p4242868s16610.html">http://www.nabble.com/RE%3A-OnSelection-Event--p4242868s16610.html</a><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>This should modify the event to run custom
code in that instance of the viewer only.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I modified it a bit to check to make sure
only one item was selected and to send the sessionID to a custom page where the
api is used to get the map and its selection set to display the data. I
think you need to use a full URL to call your custom page because a relative
URL will be relative to the viewer application. This has worked well for
me in the <st1:City w:st="on"><st1:place w:st="on">AJAX</st1:place></st1:City>
viewer. Jason stated that it will not work in the DWF viewer but I haven’t
tried it.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=blue
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:blue'>function</span></font><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
MyOnSelectionChangedHandler()<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
{<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
originalOnSelectionChanged();<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'> <font
color=blue><span style='color:blue'>var</span></font>
mapFrame=ViewerFrame.GetMapFrame();<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
<font color=blue><span style='color:blue'>var</span></font>
selCount=mapFrame.GetSelectedCount();<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
<font color=blue><span style='color:blue'>if</span></font>(selCount==1)<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
{<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
<font color=blue><span style='color:blue'>var</span></font>
sessionID=mapFrame.GetSessionId()
parent.tabspage.selecteddetails.location.href=<font color=maroon><span
style='color:maroon'>"http://mysite/mypage.aspx?sessionID="</span></font>+sessionID<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
}<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New"'> }</span></font><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Brad Leighninger<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Mathews & Associates, Inc.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>417-869-6009<o:p></o:p></span></font></p>
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face="Times New Roman"><span style='font-size:12.0pt'>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> mapguide-users-bounces@lists.osgeo.org
[mailto:mapguide-users-bounces@lists.osgeo.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Buscher, Shane<br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, February 28, 2007
1:01 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Mapguide_users@lists.osgeo.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> [mapguide-users] Custom
OnSelection Events - a better way?</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>I
needed a way to capture a selected feature, get it’s attributes, then
show the results in the task frame. I was able to achieve this by
customizing the OnSelectionChanged javascript</span></font> <font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>function</span></font>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>in the
mainframe.templ (thanks to Kori</span></font> <a
href="http://www.nabble.com/OnSelection-Event--tf1561860s16610.html#a4241783"><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>http://www.nabble.com/OnSelection-Event--tf1561860s16610.html#a4241783</span></font></a><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>). </span></font>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>The
Viewer API does not expose this event, so</span></font> <font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>the downside is
that you’re forced into modifying MapGuide source code</span></font> <font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>that will
get executed for all applications. </span></font> <font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>I’m
developing in an enterprise environment, so I need to be careful with</span></font>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>dabbling
in 3<sup>rd</sup> party source code and want to avoid unexpected results with
other applications that we’ll write. If I</span></font> <font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>(or someone
else)</span></font> <font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>ever did a reinstall of the web extensions and forgot</span></font>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>there
was a customized mainframe.templ,</span></font> <font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>we’d be hosed. Is there
any better way to handle this?</span></font><o:p></o:p></p>
<p><a name=""><font size=2 face=Arial><span style='font-size:10.0pt;font-family:
Arial'>Regards,</span></font></a><o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Shane</span></font><o:p></o:p></p>
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