/**
* @return HtmlContainer
*/
public function getHeader() : HtmlContainer
{
$title = ($this->icon ? (new HtmlElement('<i>'))->addClass($this->icon)->render() . ' ' : '') . $this->title;
$link = new HtmlContainer('<a>', $title);
if ($this->href && !$this->isDisabled()) {
$link->addAttribute('href', $this->href);
}
if (substr($this->href, 0, 1) == '#' && !$this->isDisabled()) {
$link->addAttribute('data-toggle', 'tab');
}
$li = (new HtmlContainer('<li>'))->addAttribute('role', 'presentation')->add($link);
if ($this->isActive()) {
$li->addClass('active');
}
if ($this->isDisabled()) {
$li->addClass('disabled');
}
return $li;
}
