Overrides Drupal\Core\Entity\EntityFormController::actions().
Overrides EntityFormController::actions
protected function actions(array $form, array &$form_state) {
$element = parent::actions($form, $form_state);
$comment = $this
->getEntity($form_state);
$node = $form_state['comment']['node'];
$preview_mode = variable_get('comment_preview_' . $node->type, DRUPAL_OPTIONAL);
// No delete action on the comment form.
unset($element['delete']);
// Mark the submit action as the primary action, when it appears.
$element['submit']['#button_type'] = 'primary';
// Only show the save button if comment previews are optional or if we are
// already previewing the submission.
$element['submit']['#access'] = $comment->cid && user_access('administer comments') || $preview_mode != DRUPAL_REQUIRED || isset($form_state['comment_preview']);
$element['preview'] = array(
'#type' => 'submit',
'#value' => t('Preview'),
'#access' => $preview_mode != DRUPAL_DISABLED,
'#validate' => array(
array(
$this,
'validate',
),
),
'#submit' => array(
array(
$this,
'submit',
),
array(
$this,
'preview',
),
),
);
return $element;
}