public function ContentTranslationHandler::entityFormSharedElements in Drupal 8

Same name and namespace in other branches

1. 9 core/modules/content_translation/src/ContentTranslationHandler.php \Drupal\content_translation\ContentTranslationHandler::entityFormSharedElements()
2. 10 core/modules/content_translation/src/ContentTranslationHandler.php \Drupal\content_translation\ContentTranslationHandler::entityFormSharedElements()

Process callback: determines which elements get clue in the form.

See also

\Drupal\content_translation\ContentTranslationHandler::entityFormAlter()

File

core/modules/content_translation/src/ContentTranslationHandler.php, line 563

Class

ContentTranslationHandler

Base class for content translation handlers.

Namespace

Drupal\content_translation

Code

public function entityFormSharedElements($element, FormStateInterface $form_state, $form) {
  static $ignored_types;

  // @todo Find a more reliable way to determine if a form element concerns a
  //   multilingual value.
  if (!isset($ignored_types)) {
    $ignored_types = array_flip([
      'actions',
      'value',
      'hidden',
      'vertical_tabs',
      'token',
      'details',
      'link',
    ]);
  }

  /** @var \Drupal\Core\Entity\ContentEntityForm $form_object */
  $form_object = $form_state
    ->getFormObject();

  /** @var \Drupal\Core\Entity\ContentEntityInterface $entity */
  $entity = $form_object
    ->getEntity();
  $display_translatability_clue = !$entity
    ->isDefaultTranslationAffectedOnly();
  $hide_untranslatable_fields = $entity
    ->isDefaultTranslationAffectedOnly() && !$entity
    ->isDefaultTranslation();
  $translation_form = $form_state
    ->get([
    'content_translation',
    'translation_form',
  ]);
  $display_warning = FALSE;

  // We use field definitions to identify untranslatable field widgets to be
  // hidden. Fields that are not involved in translation changes checks should
  // not be affected by this logic (the "revision_log" field, for instance).
  $field_definitions = array_diff_key($entity
    ->getFieldDefinitions(), array_flip($this
    ->getFieldsToSkipFromTranslationChangesCheck($entity)));
  foreach (Element::children($element) as $key) {
    if (!isset($element[$key]['#type'])) {
      $this
        ->entityFormSharedElements($element[$key], $form_state, $form);
    }
    else {

      // Ignore non-widget form elements.
      if (isset($ignored_types[$element[$key]['#type']])) {
        continue;
      }

      // Elements are considered to be non multilingual by default.
      if (empty($element[$key]['#multilingual'])) {

        // If we are displaying a multilingual entity form we need to provide
        // translatability clues, otherwise the non-multilingual form elements
        // should be hidden.
        if (!$translation_form) {
          if ($display_translatability_clue) {
            $this
              ->addTranslatabilityClue($element[$key]);
          }

          // Hide widgets for untranslatable fields.
          if ($hide_untranslatable_fields && isset($field_definitions[$key])) {
            $element[$key]['#access'] = FALSE;
            $display_warning = TRUE;
          }
        }
        else {
          $element[$key]['#access'] = FALSE;
        }
      }
    }
  }
  if ($display_warning && !$form_state
    ->isSubmitted() && !$form_state
    ->isRebuilding()) {
    $url = $entity
      ->getUntranslated()
      ->toUrl('edit-form')
      ->toString();
    $this->messenger
      ->addWarning($this
      ->t('Fields that apply to all languages are hidden to avoid conflicting changes. <a href=":url">Edit them on the original language form</a>.', [
      ':url' => $url,
    ]));
  }
  return $element;
}