Overrides Drupal\Core\Entity\EntityFormController::actionsElement().
Overrides EntityFormController::actionsElement
protected function actionsElement(array $form, array &$form_state) {
$element = parent::actionsElement($form, $form_state);
$element['#weight'] = 0;
$view = $this
->getEntity($form_state);
if (empty($view->changed)) {
$element['#attributes'] = array(
'class' => array(
'js-hide',
),
);
}
return $element;
}