[Chameleon] How to register function for ROI_CHANGED event?

[Julien-Samuel Lacroix]

Hi Jacob,

There's a ONROICHANGED attribute in the ROIManager widget. I don't know 
if it may help. For your problem, does the ROIAreaRegisterForEvent and 
updateArea functions are printed in your result html page? And does the 
ROIAreaRegisterForEvent get called in the OnLoad function?

You can maybe put some alert(); in the cwc_event.js file around line 151 
(in the CWCEventManager_TriggerEvent) to see what happen.

Julien

Delfos, Jacob wrote:
> Hi List,
> 
> I'm trying to write a widget that displays the area of a ROI in a label, 
> similar to the ruler widget. It all works, except I can't get it to 
> respond to the ROI_CHANGED event, which gets triggered around line 242 
> of cwc_roi.js. By manually calling the function at that point, 
> everything works fine. But obviously I'd prefer to use the event.
> 
> I have pasted the relevant bits from my widget, hoping someone can see 
> something I did wrong.
> 
> Thanks in advance,
> 
> Jacob
> 
> 
> ------------------------------Inside 
> "GetJavascriptFunctions"------------------------------
> 
> $szJsFunctionName = "ROIAreaRegisterForEvent";
> $szFunction = <<<EOT
> 
> function {$szJsFunctionName}()
> {
>     goCWCROIManager.RegisterEvent(ROI_CHANGED, "updateArea");
> }
> EOT;
> 
>        $aReturn[$szJsFunctionName] = $szFunction;
> 
>        $szJsFunctionName = "updateArea";
>         $szFunction = <<<EOT
> 
> function {$szJsFunctionName}()
> {
> […]
> }
> EOT;
> 
> $aReturn[$szJsFunctionName] = $szFunction;
> return $aReturn;
> ------------------------------------------------------------------------------------------------------------------------
> 
> 
> 
> ------------------------------------GetJavascriptOnLoadFunctions------------------------------------ 
> 
> 
>     function GetJavascriptOnLoadFunctions()
>     {
>         $aReturn = array();
> 
>         $aReturn = parent::GetJavascriptOnLoadFunctions();
> 
>         $szJsFunctionName = "ROIAreaRegisterForEvent";
>         $szFunction = "$szJsFunctionName();\n";
>         $aReturn[$szJsFunctionName] = $szFunction;
> 
> 
>         return $aReturn;
>     }
> ------------------------------------------------------------------------------------------------------------ 
> 
> 
> 
> 
> 
> *JACOB DELFOS
> GIS ANALYST
> *Maunsell Australia Pty Ltd
> 629 Newcastle Street, Leederville, WA 6007
> PO Box 81, Leederville, WA 6902
> Western Australia
> ABN 20 093 846 925
> 
> Tel     + 61 8 9281 6185
> Fax    + 61 8 9281 6297
> _jacob.delfos at maunsell.com_
> 
> 
> ------------------------------------------------------------------------
> 
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-- 
Julien-Samuel Lacroix
Mapgears
http://www.mapgears.com/