/**
* Processes elements that have input groups.
*
* @param \Drupal\materialize\Utility\Element $element
* The element object.
* @param \Drupal\Core\Form\FormStateInterface $form_state
* The current state of the form.
* @param array $complete_form
* The complete form structure.
*/
protected static function processInputGroups(Element $element, FormStateInterface $form_state, array &$complete_form)
{
// Automatically inject the nearest button found after this element if
// #input_group_button exists.
if ($element->getProperty('input_group_button')) {
// Obtain the parent array to limit search.
$array_parents = $element->getProperty('array_parents', []);
// Remove the current element from the array.
array_pop($array_parents);
// Retrieve the parent element.
$parent = Element::create(NestedArray::getValue($complete_form, $array_parents), $form_state);
// Find the closest button.
if ($button = self::findButton($parent)) {
$element->appendProperty('field_suffix', $button->setIcon());
$button->setProperty('access', FALSE);
}
}
$input_group_attributes = ['class' => ['input-group-' . ($element->getProperty('input_group_button') ? 'btn' : 'addon')]];
if ($prefix = $element->getProperty('field_prefix')) {
$element->setProperty('field_prefix', ['#type' => 'html_tag', '#tag' => 'span', '#attributes' => $input_group_attributes, '#value' => Element::create($prefix)->render(), '#weight' => -1]);
}
if ($suffix = $element->getProperty('field_suffix')) {
$element->setProperty('field_suffix', ['#type' => 'html_tag', '#tag' => 'span', '#attributes' => $input_group_attributes, '#value' => Element::create($suffix)->render(), '#weight' => 1]);
}
}
