public function TextimageTextFieldFormatter::viewElements in Textimage 8.4

Same name and namespace in other branches

1. 8.3 src/Plugin/Field/FieldFormatter/TextimageTextFieldFormatter.php \Drupal\textimage\Plugin\Field\FieldFormatter\TextimageTextFieldFormatter::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/TextimageTextFieldFormatter.php, line 268

Class

TextimageTextFieldFormatter

Plugin implementation of the Textimage text field formatter.

Namespace

Drupal\textimage\Plugin\Field\FieldFormatter

Code

public function viewElements(FieldItemListInterface $items, $langcode) {

  // Get image style.
  $image_style = $this->imageStyleStorage
    ->load($this
    ->getSetting('image_style'));

  // Collect bubbleable metadata.
  $bubbleable_metadata = new BubbleableMetadata();

  // Provide token data for the displayed entity.
  $instance = $items
    ->getFieldDefinition();
  $field = $instance
    ->getFieldStorageDefinition();
  $token_data = [
    $instance
      ->getTargetEntityTypeId() => $items
      ->getEntity(),
  ];

  // Get text strings from the text field.
  $text = $this->textimageFactory
    ->getTextFieldText($items);

  // Get alt and title text from the formatter settings, and resolve tokens.
  if ($image_alt = $this
    ->getSetting('image_alt')) {
    $image_alt = $this->textimageFactory
      ->processTextString($image_alt, NULL, $token_data, $bubbleable_metadata);
  }
  if ($image_title = $this
    ->getSetting('image_title')) {
    $image_title = $this->textimageFactory
      ->processTextString($image_title, NULL, $token_data, $bubbleable_metadata);
  }

  // Check if the formatter involves a link to the parent entity.
  $entity_url = $this
    ->getSetting('image_link') == 'content' ? $items
    ->getEntity()
    ->toUrl() : NULL;
  $elements = [];
  if ($field
    ->getCardinality() != 1 && $this
    ->getSetting('image_text_values') == 'itemize') {

    // Build separate image for each text value.
    foreach ($text as $text_value) {
      $textimage = $this->textimageFactory
        ->get($bubbleable_metadata)
        ->setStyle($image_style)
        ->setTokenData($token_data)
        ->process($text_value);
      if (!$this
        ->getSetting('image_build_deferred')) {
        $textimage
          ->buildImage();
      }

      // Check if the formatter involves a link to the derived image.
      if (!$entity_url && $this
        ->getSetting('image_link') == 'file') {
        $url = $textimage
          ->getUrl();
      }
      else {
        $url = NULL;
      }
      $element = [
        '#theme' => 'textimage_formatter',
        '#uri' => $textimage
          ->getUri(),
        '#width' => $textimage
          ->getWidth(),
        '#height' => $textimage
          ->getHeight(),
        '#alt' => $image_alt,
        '#title' => $image_title,
        '#anchor_url' => $entity_url ?: $url,
      ];
      $bubbleable_metadata
        ->applyTo($element);
      $elements[] = $element;
    }
  }
  else {

    // Build single image with all text values.
    $textimage = $this->textimageFactory
      ->get($bubbleable_metadata)
      ->setStyle($image_style)
      ->setTokenData($token_data)
      ->process($text);
    if (!$this
      ->getSetting('image_build_deferred')) {
      $textimage
        ->buildImage();
    }

    // Check if the formatter involves a link to the derived image.
    if (!$entity_url && $this
      ->getSetting('image_link') == 'file') {
      $url = $textimage
        ->getUrl();
    }
    else {
      $url = NULL;
    }
    $element = [
      '#theme' => 'textimage_formatter',
      '#uri' => $textimage
        ->getUri(),
      '#width' => $textimage
        ->getWidth(),
      '#height' => $textimage
        ->getHeight(),
      '#alt' => $image_alt,
      '#title' => $image_title,
      '#anchor_url' => $entity_url ?: $url,
    ];
    $bubbleable_metadata
      ->applyTo($element);
    $elements[] = $element;
  }
  return $elements;
}