/**
* @param HtmlElement|string $helpText
*
* @return $this|self
*/
public function setHelpText($helpText) : self
{
if (!$helpText instanceof HtmlElement) {
$helpText = new HtmlElement('<span>', $helpText);
}
$helpText->addClass('help-block');
// @see http://getbootstrap.com/css/#forms-help-text
if ($this->getField()) {
if (!$helpText->getId()) {
$helpText->generateId();
}
$this->getField()->addAttribute('aria-describedby', $helpText->getId());
}
$this->helpText = $helpText;
return $this;
}