public function BlazyVideoFormatter::viewElements in Blazy 8

Same name and namespace in other branches

1. 8.2 src/Plugin/Field/FieldFormatter/BlazyVideoFormatter.php \Drupal\blazy\Plugin\Field\FieldFormatter\BlazyVideoFormatter::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/BlazyVideoFormatter.php, line 48

Class

BlazyVideoFormatter

Plugin implementation of the 'Blazy Video' to get VEF videos.

Namespace

Drupal\blazy\Plugin\Field\FieldFormatter

Code

public function viewElements(FieldItemListInterface $items, $langcode) {
  $build = [];

  // Early opt-out if the field is empty.
  if ($items
    ->isEmpty()) {
    return $build;
  }

  // Collects specific settings to this formatter.
  $settings = $this
    ->buildSettings();
  $settings['blazy'] = TRUE;
  $settings['namespace'] = $settings['item_id'] = $settings['lazy'] = 'blazy';

  // Build the settings.
  $build = [
    'settings' => $settings,
  ];

  // Modifies settings.
  $this->blazyManager
    ->buildSettings($build, $items);

  // Fecthes URI from the first item to build dimensions once.
  $this
    ->buildVideo($build['settings'], $items[0]->value);

  // Build the elements.
  $this
    ->buildElements($build, $items);

  // Updates settings.
  $settings = $build['settings'];
  unset($build['settings']);

  // Supports Blazy multi-breakpoint images if provided.
  if (!empty($settings['uri'])) {
    $this->blazyManager
      ->isBlazy($settings, $build[0]['#build']);
  }
  $build['#blazy'] = $settings;
  $build['#attached'] = $this->blazyManager
    ->attach($settings);
  return $build;
}