List with multilined (word wrapping) item renderer - how to scroll to the bottom? With test case and screenshots

Question

In a Flex 4 web application I am trying to use a spark.components.List for a chat (for various reasons - it works well for me in a Flex mobile app already), but because I use an

Answer 1

Found the answer myself at the Flexponential blog Scrolling to the bottom of a spark List:

    public static function scrollToBottom(list:List):void {
        // update the verticalScrollPosition to the end of the List
        // virtual layout may require us to validate a few times
        var delta:Number = 0;
        var count:int = 0;

        while (count++ < 10) {
            list.validateNow();
            delta = list.layout.getVerticalScrollPositionDelta(NavigationUnit.END);
            list.layout.verticalScrollPosition += delta;

            if (delta == 0)
                break;
        }
    }