Left aligned label in FormItem

ExtendedFormItem.as

package {
    
    import flash.display.DisplayObject;
    
    import mx.containers.FormItem;
    import mx.controls.Label;
    import mx.styles.CSSStyleDeclaration;
    import mx.styles.StyleManager;

    [Style(name="labelAlign", type="String", enumeration="left,right", inherit="no")]

    public class ExtendedFormItem extends FormItem {
        
        private static const CLASS_NAME : String = "ExtendedFormItem";
        
        private static var classConstructed : Boolean = staticConstructor();

        private static function staticConstructor() : Boolean {
            if (!StyleManager.getStyleDeclaration(CLASS_NAME)) {
                var newStyleDeclaration : CSSStyleDeclaration = new CSSStyleDeclaration();
                newStyleDeclaration.setStyle("labelAlign", "left");
                StyleManager.setStyleDeclaration(CLASS_NAME, newStyleDeclaration, true);
            }
            return true;
        }
        
        override public function styleChanged(styleProp : String) : void {
            super.styleChanged(styleProp);
            switch (styleProp) {
                case "labelAlign" :
                    invalidateDisplayList();
                    break;
            }
        }

        override protected function updateDisplayList(w : Number, h : Number) : void {
            super.updateDisplayList(w, h);
            if (label.length > 0) {
                var labelAlign : String = getStyle("labelAlign");
                var labelIndex : int = (required ? rawChildren.numChildren - 2 : rawChildren.numChildren - 1);
                var label : Label = Label(rawChildren.getChildAt(labelIndex));
                if (labelAlign == "left") {
                    label.x = 0;
                    if (required) {
                        var indicator : DisplayObject = rawChildren.getChildAt(rawChildren.numChildren - 1);
                        indicator.x = label.width + ((getStyle("indicatorGap") - indicator.width) / 2);
                    }
                }
            }
        }
    }
}