public function FieldItemListNormalizer::normalize in Facebook Instant Articles 3.x

Same name and namespace in other branches

1. 8.2 src/Normalizer/FieldItemListNormalizer.php \Drupal\fb_instant_articles\Normalizer\FieldItemListNormalizer::normalize()

File

src/Normalizer/FieldItemListNormalizer.php, line 59

Class

FieldItemListNormalizer

Normalize FieldItemList object into an Instant Article object.

Namespace

Drupal\fb_instant_articles\Normalizer

Code

public function normalize($object, $format = NULL, array $context = []) {

  /** @var \Drupal\Core\Field\FieldItemListInterface $object */
  if (!isset($context['instant_article'])) {
    return;
  }

  /** @var \Facebook\InstantArticles\Elements\InstantArticle $article */
  $article = $context['instant_article'];

  // If we're given an entity_view_display object as context, use that as a
  // mapping to guide the normalization.
  if (isset($context['entity_view_display'])) {

    /** @var \Drupal\Core\Entity\Entity\EntityViewDisplay $display */
    $display = $context['entity_view_display'];
    $formatter = $display
      ->getRenderer($object
      ->getName());
    $component = $display
      ->getComponent($object
      ->getName());
    if ($formatter instanceof InstantArticleFormatterInterface) {
      $formatter
        ->viewInstantArticle($object, $article, $component['region'], $this->serializer);
    }
    elseif ($formatter instanceof FormatterInterface) {
      $formatter
        ->prepareView([
        $object
          ->getEntity()
          ->id() => $object,
      ]);
      $render_array = $formatter
        ->view($object);
      if ($markup = (string) $this->renderer
        ->renderPlain($render_array)) {

        // Determine correct context for transformation.
        $transformer_context = $article;
        if ($component['region'] === Regions::REGION_HEADER) {
          $header = $article
            ->getHeader();
          if (!$header) {
            $header = Header::create();
            $article
              ->withHeader($header);
          }
          $transformer_context = $header;
        }
        elseif ($component['region'] === Regions::REGION_FOOTER) {
          $footer = $article
            ->getFooter();
          if (!$footer) {
            $footer = Footer::create();
            $article
              ->withFooter($footer);
          }
          $transformer_context = $footer;
        }

        // Region-aware transformation of rendered markup.
        // Pass the markup through the Transformer.
        $transformer = $this->transformerFactory
          ->getTransformer();
        $transformer
          ->transformString($transformer_context, $markup);
        $this->transformerFactory
          ->flushTransformerLogs($transformer);
      }
    }
  }
}