Seems the compiler has a restriction on declaratively setting values of
"Function" type properties and styles. If I do this:
<bl:HorizontalClusteredBarChart
formatPointLabelFunction="PointLabelFormatters.myPointFormatter" />
Where PointLabelFormatters is defined as:
class PointLabelFormatters {
public static function myPointFormatter(point:Object):String {
return "this is my point";
}
}
I get an error:
Error /charts/CustomPoints.mxml:19
Only functions in the document are allowed.
Even if I try to create a document level alias for the function:
<mx:Script>
var localAliasForSillyCompilerRestriction:Function =
PointLabelFormatters.myPointFormatter;
</mx:Script>
<HorizontalClusteredBarChart
formatPointLabelFunction="localAliasForSillyCompilerRestriction" />
I get the same error. Only workaround is to create a wrapper function which
means an extra unnecessary function call just because of a compiler
restriction. This is a function that will be called thousands of times upon
each rendering, so the extra call can be significant.
Is there any other way around this besides the wrapper function?
Sam
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