public function PhotoswipeFieldFormatter::viewElements in PhotoSwipe 8.2

Same name and namespace in other branches

1. 8 src/Plugin/Field/FieldFormatter/PhotoswipeFieldFormatter.php \Drupal\photoswipe\Plugin\Field\FieldFormatter\PhotoswipeFieldFormatter::viewElements()
2. 3.x src/Plugin/Field/FieldFormatter/PhotoswipeFieldFormatter.php \Drupal\photoswipe\Plugin\Field\FieldFormatter\PhotoswipeFieldFormatter::viewElements()

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/PhotoswipeFieldFormatter.php, line 253

Class

PhotoswipeFieldFormatter

Plugin implementation of the 'photoswipe_field_formatter' formatter.

Namespace

Drupal\photoswipe\Plugin\Field\FieldFormatter

Code

public function viewElements(FieldItemListInterface $items, $langcode) {
  $elements = [];
  $settings = $this
    ->getSettings();
  if ($items
    ->isEmpty()) {
    $default_image = $this
      ->getFieldSetting('default_image');

    // If we are dealing with a configurable field, look in both
    // instance-level and field-level settings.
    if (empty($default_image['uuid']) && $this->fieldDefinition instanceof FieldConfigInterface) {
      $default_image = $this->fieldDefinition
        ->getFieldStorageDefinition()
        ->getSetting('default_image');
    }
    if (!empty($default_image['uuid']) && ($file = \Drupal::service('entity.repository')
      ->loadEntityByUuid('file', $default_image['uuid']))) {

      // Clone the FieldItemList into a runtime-only object for the formatter,
      // so that the fallback image can be rendered without affecting the
      // field values in the entity being rendered.
      $items = clone $items;
      $items
        ->setValue([
        'target_id' => $file
          ->id(),
        'alt' => $default_image['alt'],
        'title' => $default_image['title'],
        'width' => $default_image['width'],
        'height' => $default_image['height'],
        'entity' => $file,
        '_loaded' => TRUE,
        '_is_default' => TRUE,
      ]);
    }
  }
  \Drupal::service('photoswipe.assets_manager')
    ->attach($elements);
  if (!empty($items) && count($items) > 1) {

    // If there are more than 1 elements, add the gallery wrapper.
    // Otherwise this is done in javascript for more flexibility.
    $elements['#prefix'] = '<div class="photoswipe-gallery">';
    $elements['#suffix'] = '</div>';
  }
  foreach ($items as $delta => $item) {
    $elements[$delta] = [
      '#theme' => 'photoswipe_image_formatter',
      '#item' => $item,
      '#entity' => $items
        ->getEntity(),
      '#display_settings' => $settings,
      '#delta' => $delta,
    ];
  }
  return $elements;
}