public function ParagraphsJQueryUIAccordionFormatter::viewElements in Paragraphs jQuery UI Accordion 8

Builds a renderable array for a field value.

Parameters

\Drupal\Core\Field\FieldItemListInterface $items: The field values to be rendered.

string $langcode: The language that should be used to render the field.

Return value

array A renderable array for $items, as an array of child elements keyed by consecutive numeric indexes starting from 0.

Overrides FormatterInterface::viewElements

File

src/Plugin/Field/FieldFormatter/ParagraphsJQueryUIAccordionFormatter.php, line 256

Contains \Drupal\paragraphs_jquery_ui_accordion\Plugin\Field\FieldFormatter\ParagraphsJQueryUIAccordionFormatter.

Class

ParagraphsJQueryUIAccordionFormatter

Plugin implementation of the 'paragraphs_jquery_ui_accordion_formatter' formatter.

Namespace

Drupal\paragraphs_jquery_ui_accordion\Plugin\Field\FieldFormatter

Code

public function viewElements(FieldItemListInterface $items, $langcode) {
  $settings = $this
    ->getSettings();
  $elements = [];
  $moduleHandler = \Drupal::service('module_handler');
  $quickedit = FALSE;
  if ($moduleHandler
    ->moduleExists('quickedit')) {
    $quickedit = TRUE;
  }
  $accordion_id = $this
    ->getAccordionId($items
    ->getEntity()
    ->id());
  $js_options = [
    'ids' => [
      $items
        ->getEntity()
        ->id() => $accordion_id,
    ],
    'active' => $this
      ->getSetting('active') ? 1 : 0,
    'autoscroll' => $this
      ->getSetting('autoscroll'),
    'autoscroll_offset' => $this
      ->getSetting('autoscroll_offset'),
  ];
  if ($settings['autoscroll_offset_toolbar'] && $moduleHandler
    ->moduleExists('toolbar')) {
    if (!\Drupal::currentUser()
      ->hasPermission('access toolbar')) {
      unset($js_options['autoscroll_offset']);
    }
  }
  $elements[0]['accordion'] = [
    '#type' => 'container',
    '#attributes' => [
      'id' => $accordion_id,
    ],
    '#attached' => [
      'library' => 'paragraphs_jquery_ui_accordion/accordion',
      'drupalSettings' => [
        'paragraphs_jquery_ui_accordion' => $js_options,
      ],
    ],
  ];
  $title_attributes = [
    'class' => [
      'accordion-title',
    ],
  ];
  $content_attributes = [
    'class' => [
      'accordion-description',
    ],
  ];
  foreach ($this
    ->getEntitiesToView($items, $langcode) as $delta => $entity) {

    // Protect ourselves from recursive rendering.
    static $depth = 0;
    $depth++;
    if ($depth > 20) {
      $this->loggerFactory
        ->get('entity')
        ->error('Recursive rendering detected when rendering entity @entity_type @entity_id. Aborting rendering.', array(
        '@entity_type' => $entity
          ->getEntityTypeId(),
        '@entity_id' => $entity
          ->id(),
      ));
      return $elements;
    }
    $title = $entity
      ->get($this
      ->getSetting('title'))->value;
    $content = $entity
      ->get($this
      ->getSetting('content'))
      ->view($settings['view_mode']);
    if (!$settings['simple_id']) {
      $id = Html::getUniqueId($this->transliteration
        ->transliterate($title));
    }
    else {
      $id = $delta + 1;
    }

    // This variable is needed to avoid js errors during render of paragraph's fields.
    if ($quickedit) {
      $content_attributes['data-quickedit-entity-id'] = $entity
        ->getEntityTypeId() . '/' . $entity
        ->id();
    }
    $elements[0]['accordion'][$delta] = [
      '#theme' => 'paragraphs_jquery_ui_accordion_formatter',
      '#title' => $title,
      '#content' => $content,
      '#id' => $id,
      '#title_attributes' => $title_attributes,
      '#content_attributes' => $content_attributes,
    ];

    // Add a resource attribute to set the mapping property's value to the
    // entity's url. Since we don't know what the markup of the entity will
    // be, we shouldn't rely on it for structured data such as RDFa.
    if (!empty($items[$delta]->_attributes) && !$entity
      ->isNew() && $entity
      ->hasLinkTemplate('canonical')) {
      $items[$delta]->_attributes += [
        'resource' => $entity
          ->toUrl()
          ->toString(),
      ];
    }
    $depth = 0;
  }
  return $elements;
}