public function MediaCombinedUploadForm::updateFormCallback in Media Directories 2.x

Same name and namespace in other branches

1. 8 modules/media_directories_ui/src/Form/MediaCombinedUploadForm.php \Drupal\media_directories_ui\Form\MediaCombinedUploadForm::updateFormCallback()

AJAX callback to update the entire form based on source field input.

Parameters

array $form: The complete form.

\Drupal\Core\Form\FormStateInterface $form_state: The current form state.

Return value

\Drupal\Core\Ajax\AjaxResponse|array The form render array or an AJAX response object.

Overrides AddMediaFormBase::updateFormCallback

File

modules/media_directories_ui/src/Form/MediaCombinedUploadForm.php, line 155

Class

MediaCombinedUploadForm

A form to upload media of different bundles.

Namespace

Drupal\media_directories_ui\Form

Code

public function updateFormCallback(array &$form, FormStateInterface $form_state) {
  $triggering_element = $form_state
    ->getTriggeringElement();
  $wrapper_id = $triggering_element['#ajax']['wrapper'];
  $added_media = $form_state
    ->get('media');
  $response = new AjaxResponse();

  // When the source field input contains errors, replace the existing form to
  // let the user change the source field input. If the user input is valid,
  // the entire modal is replaced with the second step of the form to show the
  // form fields for each media item.
  if ($form_state::hasAnyErrors()) {
    $response
      ->addCommand(new ReplaceCommand('#media-library-add-form-wrapper', $form));
    return $response;
  }

  // Check if the remove button is clicked.
  if (end($triggering_element['#parents']) === 'remove_button') {

    // When the list of added media is empty, return to the media library and
    // shift focus back to the first tabbable element (which should be the
    // source field).
    if (empty($added_media)) {
      $build = [
        '#theme' => 'media_directories_add',
        '#selected_type' => 'combined_upload',
        '#active_directory' => -1,
        '#target_bundles' => $this
          ->getTargetBundles($form_state),
        '#media_library_form_rebuild' => TRUE,
      ];
      $form_state
        ->setRebuild();
      $response
        ->addCommand(new ReplaceCommand('#media-library-add-form-wrapper', $build));
    }
    else {
      $response
        ->addCommand(new ReplaceCommand("#{$wrapper_id}", $form));
    }
  }
  else {
    $response
      ->addCommand(new ReplaceCommand("#{$wrapper_id}", $form));
  }
  return $response;
}