public function ParagraphsPreviewerWidgetTrait::formElement in Paragraphs Previewer 8

Uses a similar approach to populate a new translation.

See also

\Drupal\content_translation\Controller\ContentTranslationController::prepareTranslation()

File

src/Plugin/Field/FieldWidget/ParagraphsPreviewerWidgetTrait.php, line 62

Class

ParagraphsPreviewerWidgetTrait

Paragraphs previewer trait to support multiple paragraphs widgets.

Namespace

Drupal\paragraphs_previewer\Plugin\Field\FieldWidget

Code

public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state) {
  $element = parent::formElement($items, $delta, $element, $form, $form_state);
  $field_name = $this->fieldDefinition
    ->getName();
  $parents = $element['#field_parents'];
  $widget_state = static::getWidgetState($parents, $field_name, $form_state);
  if (!isset($widget_state['paragraphs'][$delta]['mode']) || !isset($widget_state['paragraphs'][$delta]['entity'])) {
    return $element;
  }
  $item_mode = $widget_state['paragraphs'][$delta]['mode'];
  if (!$this
    ->isPreviewerEnabled($item_mode)) {
    return $element;
  }
  $paragraphs_entity = $widget_state['paragraphs'][$delta]['entity'];
  $element_parents = array_merge($parents, [
    $field_name,
    $delta,
  ]);
  $id_prefix = implode('-', $element_parents);
  $previewer_element = [
    '#type' => 'submit',
    '#value' => t('Preview'),
    '#name' => strtr($id_prefix, '-', '_') . '_previewer',
    '#weight' => -99999,
    '#submit' => [
      [
        get_class($this),
        'submitPreviewerItem',
      ],
    ],
    '#field_item_parents' => $element_parents,
    '#limit_validation_errors' => [
      array_merge($parents, [
        $field_name,
        'add_more',
      ]),
    ],
    '#delta' => $delta,
    '#ajax' => [
      'callback' => [
        get_class($this),
        'ajaxSubmitPreviewerItem',
      ],
      'wrapper' => $widget_state['ajax_wrapper_id'],
      'effect' => 'fade',
    ],
    '#access' => $paragraphs_entity
      ->access('view'),
    '#attributes' => [
      'class' => [
        'link',
        'paragraphs-previewer',
      ],
    ],
    '#attached' => [
      'library' => [
        'paragraphs_previewer/dialog',
      ],
    ],
  ];

  // Set the dialog title.
  if (isset($element['top']['paragraph_type_title']['info']['#markup'])) {
    $previewer_element['#previewer_dialog_title'] = strip_tags($element['top']['paragraph_type_title']['info']['#markup']);
  }
  else {
    $previewer_element['#previewer_dialog_title'] = t('Preview');
  }
  if (isset($element['top']['actions']['actions'])) {

    // Support "paragraphs" widget.
    $element['top']['actions']['actions']['previewer_button'] = $previewer_element;
  }
  elseif (isset($element['top']['links'])) {

    // Support legacy "entity_reference_paragraphs" widget.
    $element['top']['links']['previewer_button'] = $previewer_element;
  }
  else {

    // Place in the top as a fallback.
    $element['top']['previewer_button'] = $previewer_element;
  }
  return $element;
}