class BatchNegotiator in Drupal 8

Sets the active theme for the batch page.

Hierarchy

• class \Drupal\system\Theme\BatchNegotiator implements ThemeNegotiatorInterface

1 string reference to 'BatchNegotiator'

system.services.yml in core/modules/system/system.services.yml

core/modules/system/system.services.yml

1 service uses BatchNegotiator

theme.negotiator.system.batch in core/modules/system/system.services.yml

Drupal\system\Theme\BatchNegotiator

File

core/modules/system/src/Theme/BatchNegotiator.php, line 13

Namespace

Drupal\system\Theme

class BatchNegotiator implements ThemeNegotiatorInterface {

  /**
   * The batch storage.
   *
   * @var \Drupal\Core\Batch\BatchStorageInterface
   */
  protected $batchStorage;

  /**
   * The request stack.
   *
   * @var \Symfony\Component\HttpFoundation\RequestStack
   */
  protected $requestStack;

  /**
   * Constructs a BatchNegotiator.
   *
   * @param \Drupal\Core\Batch\BatchStorageInterface $batch_storage
   *   The batch storage.
   * @param \Symfony\Component\HttpFoundation\RequestStack $request_stack
   *   The request stack used to retrieve the current request.
   */
  public function __construct(BatchStorageInterface $batch_storage, RequestStack $request_stack) {
    $this->batchStorage = $batch_storage;
    $this->requestStack = $request_stack;
  }

  /**
   * {@inheritdoc}
   */
  public function applies(RouteMatchInterface $route_match) {
    return $route_match
      ->getRouteName() == 'system.batch_page';
  }

  /**
   * {@inheritdoc}
   */
  public function determineActiveTheme(RouteMatchInterface $route_match) {

    // Retrieve the current state of the batch.
    $request = $this->requestStack
      ->getCurrentRequest();
    $batch =& batch_get();
    if (!$batch && $request->request
      ->has('id')) {
      $batch = $this->batchStorage
        ->load($request->request
        ->get('id'));
    }

    // Use the same theme as the page that started the batch.
    if (!empty($batch['theme'])) {
      return $batch['theme'];
    }
  }

}

Members

Name	Modifiers	Type	Description	Overrides
BatchNegotiator::$batchStorage	protected	property	The batch storage.
BatchNegotiator::$requestStack	protected	property	The request stack.
BatchNegotiator::applies	public	function	Whether this theme negotiator should be used to set the theme. Overrides ThemeNegotiatorInterface::applies
BatchNegotiator::determineActiveTheme	public	function	Determine the active theme for the request. Overrides ThemeNegotiatorInterface::determineActiveTheme
BatchNegotiator::__construct	public	function	Constructs a BatchNegotiator.