Check if the style exists before loading

Hello

I have a load of styles THAT CSS compiled to SWF format. When the application loads, it search in a database to see which of these styles, it should use and uses the following code to load:

public function set currentStyle(val:String):void

{

If (val! = _currentStyle)

{

var isOK:Boolean = true;

If (val.length > 0)

{

Try

{

StyleManager.loadStyleDeclarations ("styles /" + val + ".swf");

If (_currentStyle.length > 0)

StyleManager.unloadStyleDeclarations ("styles /" + _currentStyle + ".swf");

_currentStyle = val;

}

catch (errObj:Error)

{

isOK = false;

}

}

}

}

It works fine when the style exists, but there are templates in the database who are not equivalent in the Flex application. In this case, it uses a default style.

If I try to use this code with a style that does not exist, I get a runtime error in the debug version of Flash Player saying that it cannot find the URL. The try... catch didn't intercept error, as this seems to happen in an event handler.

Is it possible to verify the existence of the style before loading, or by catching the failure?

I can't create a style for each entry in the database, because the list changes on a regular basis.

Thanks for your help.

StyleManager.loadStyleDeclarations () returns an IEventDispatcher. Add a listener for StyleEvent.ERROR and the exception will not be lifted.

-Darrell

Tags: Flex

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