/**
* Build the Vertical object.
*
* @param array $options options to build the Vertical object.
* @param closure $block Closure to build the Vertical object.
* @return ContentTag instance of ContenTag that represents the Vertical object.
*/
private function build_vertical($options = [], $block = null)
{
Base::set_navbar_vertical(true);
$this->append_class($options, 'navbar-header');
$yield = is_callable($block) ? call_user_func($block) : $block;
$vertical = new ContentTag('div', $options, function () use($yield) {
$content = is_array($yield) ? array_merge([$this->toggle_button()], $yield) : [$this->toggle_button(), $yield];
return $content;
});
Base::set_navbar_vertical(false);
return $vertical->get_html_object();
}
