3 namespace Drupal\Core\Plugin\Context;
5 use Symfony\Component\DependencyInjection\ContainerInterface;
8 * Provides a context repository which uses context provider services.
10 class LazyContextRepository implements ContextRepositoryInterface {
13 * The set of available context providers service IDs.
16 * Context provider service IDs.
18 protected $contextProviderServiceIDs = [];
21 * The service container.
23 * @var \Symfony\Component\DependencyInjection\ContainerInterface
28 * The statically cached contexts.
30 * @var \Drupal\Core\Plugin\Context\ContextInterface[]
32 protected $contexts = [];
35 * Constructs a LazyContextRepository object.
37 * @param \Symfony\Component\DependencyInjection\ContainerInterface $container
38 * The current service container.
39 * @param string[] $context_provider_service_ids
40 * The set of the available context provider service IDs.
42 public function __construct(ContainerInterface $container, array $context_provider_service_ids) {
43 $this->container = $container;
44 $this->contextProviderServiceIDs = $context_provider_service_ids;
50 public function getRuntimeContexts(array $context_ids) {
53 // Create a map of context providers (service IDs) to unqualified context
55 $context_ids_by_service = [];
56 foreach ($context_ids as $id) {
57 if (isset($this->contexts[$id])) {
58 $contexts[$id] = $this->contexts[$id];
61 // The IDs have been passed in @{service_id}:{unqualified_context_id}
63 // @todo Convert to an assert once https://www.drupal.org/node/2408013 is
65 if ($id[0] === '@' && strpos($id, ':') !== FALSE) {
66 list($service_id, $unqualified_context_id) = explode(':', $id, 2);
67 // Remove the leading '@'.
68 $service_id = substr($service_id, 1);
71 throw new \InvalidArgumentException('You must provide the context IDs in the @{service_id}:{unqualified_context_id} format.');
73 $context_ids_by_service[$service_id][] = $unqualified_context_id;
76 // Iterate over all missing context providers (services), gather the
77 // runtime contexts and assign them as requested.
78 foreach ($context_ids_by_service as $service_id => $unqualified_context_ids) {
79 $contexts_by_service = $this->container->get($service_id)->getRuntimeContexts($unqualified_context_ids);
81 $wanted_contexts = array_intersect_key($contexts_by_service, array_flip($unqualified_context_ids));
82 foreach ($wanted_contexts as $unqualified_context_id => $context) {
83 $context_id = '@' . $service_id . ':' . $unqualified_context_id;
84 $this->contexts[$context_id] = $contexts[$context_id] = $context;
94 public function getAvailableContexts() {
96 foreach ($this->contextProviderServiceIDs as $service_id) {
97 $contexts_by_service = $this->container->get($service_id)->getAvailableContexts();
98 foreach ($contexts_by_service as $unqualified_context_id => $context) {
99 $context_id = '@' . $service_id . ':' . $unqualified_context_id;
100 $contexts[$context_id] = $context;