/**
* {@inheritdoc}
*/
public function &getGroups()
{
return $this->mainFormState->getGroups();
}
/**
* Arranges elements into groups.
*
* This method is useful for non-input elements that can be used in and
* outside the context of a form.
*
* @param array $element
* An associative array containing the properties and children of the
* element. Note that $element must be taken by reference here, so processed
* child elements are taken over into $form_state.
* @param \Drupal\Core\Form\FormStateInterface $form_state
* The current state of the form.
* @param array $complete_form
* The complete form structure.
*
* @return array
* The processed element.
*/
public static function processGroup(&$element, FormStateInterface $form_state, &$complete_form)
{
$parents = implode('][', $element['#parents']);
// Each details element forms a new group. The #type 'vertical_tabs' basically
// only injects a new details element.
$groups =& $form_state->getGroups();
$groups[$parents]['#group_exists'] = TRUE;
$element['#groups'] =& $groups;
// Process vertical tabs group member details elements.
if (isset($element['#group'])) {
// Add this details element to the defined group (by reference).
$group = $element['#group'];
$groups[$group][] =& $element;
}
return $element;
}
/**
* {@inheritdoc}
*/
public function &getGroups()
{
return $this->decoratedFormState->getGroups();
}