acp_styles::show_styles_list PHP Method

    protected function show_styles_list(&$styles, $parent, $level)
    {
        foreach ($styles as &$style) {
            if (empty($style['_shown']) && $style['style_parent_id'] == $parent) {
                $this->list_style($style, $level);
                $this->show_styles_list($styles, $style['style_id'], $level + 1);
            }
        }
    }