function LazyContextRepository::getRuntimeContexts

File

core/lib/Drupal/Core/Plugin/Context/LazyContextRepository.php, line 50

Class

LazyContextRepository

Provides a context repository which uses context provider services.

Namespace

Code

public function getRuntimeContexts(array $context_ids) {
  $contexts = [];
  // Create a map of context providers (service IDs) to unqualified context
  // IDs.
  $context_ids_by_service = [];
  foreach ($context_ids as $id) {
    if (isset($this->contexts[$id])) {
      $contexts[$id] = $this->contexts[$id];
      continue;
    }
    // The IDs have been passed in @{service_id}:{unqualified_context_id}
    // format.
    // @todo Convert to an assert once https://www.drupal.org/node/2408013 is
    //   in.
    if ($id[0] === '@' && strpos($id, ':') !== FALSE) {
      [$service_id, $unqualified_context_id] = explode(':', $id, 2);
      // Remove the leading '@'.
      $service_id = substr($service_id, 1);
    }
    else {
      throw new \InvalidArgumentException('You must provide the context IDs in the @{service_id}:{unqualified_context_id} format.');
    }
    $context_ids_by_service[$service_id][] = $unqualified_context_id;
  }
  // Iterate over all missing context providers (services), gather the
  // runtime contexts and assign them as requested.
  foreach ($context_ids_by_service as $service_id => $unqualified_context_ids) {
    $contexts_by_service = $this->container
      ->get($service_id)
      ->getRuntimeContexts($unqualified_context_ids);
    $wanted_contexts = array_intersect_key($contexts_by_service, array_flip($unqualified_context_ids));
    foreach ($wanted_contexts as $unqualified_context_id => $context) {
      $context_id = '@' . $service_id . ':' . $unqualified_context_id;
      $this->contexts[$context_id] = $contexts[$context_id] = $context;
    }
  }
  return $contexts;
}