for (int i = 0; i < items.size; i++)
maxItemWidth = Math.max(font.getBounds(items.get(i).toString()).width, maxItemWidth);
prefWidth = bg.getLeftWidth() + bg.getRightWidth() + maxItemWidth;
ListStyle listStyle = style.listStyle;
ScrollPaneStyle scrollStyle = style.scrollStyle;
prefWidth = Math.max(
prefWidth,
maxItemWidth
+ (scrollStyle.background == null ? 0 : scrollStyle.background.getLeftWidth()