LibWeb: Implement nagivator.serviceWorker.getRegistration()

Author: https://github.com/F3n67u
Commit: 37e1d6ece1
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/3110
Reviewed-by: https://github.com/ADKaster ✅

Libraries/LibWeb/HTML/Scripting/Environments.cpp

@@ -21,6 +21,8 @@
 #include <LibWeb/HTML/WorkerGlobalScope.h>
 #include <LibWeb/Page/Page.h>
 #include <LibWeb/SecureContexts/AbstractOperations.h>
+#include <LibWeb/ServiceWorker/ServiceWorker.h>
+#include <LibWeb/ServiceWorker/ServiceWorkerRegistration.h>
 #include <LibWeb/StorageAPI/StorageManager.h>
 
 namespace Web::HTML {
@@ -61,6 +63,8 @@ void EnvironmentSettingsObject::visit_edges(Cell::Visitor& visitor)
     m_realm_execution_context->visit_edges(visitor);
     visitor.visit(m_fetch_group);
     visitor.visit(m_storage_manager);
+    visitor.visit(m_service_worker_registration_object_map);
+    visitor.visit(m_service_worker_object_map);
 }
 
 JS::ExecutionContext& EnvironmentSettingsObject::realm_execution_context()
@@ -574,4 +578,63 @@ GC::Ref<StorageAPI::StorageManager> EnvironmentSettingsObject::storage_manager()
     return *m_storage_manager;
 }
 
+// https://w3c.github.io/ServiceWorker/#get-the-service-worker-registration-object
+GC::Ref<ServiceWorker::ServiceWorkerRegistration> EnvironmentSettingsObject::get_service_worker_registration_object(ServiceWorker::Registration const& registration)
+{
+    // 1. Let objectMap be environment’s service worker registration object map.
+    auto& object_map = this->m_service_worker_registration_object_map;
+
+    // FIXME: File spec issue asking if this should be keyed on the registration's scope url only or on the url and the storage key
+    auto const key = ServiceWorker::RegistrationKey { registration.storage_key(), registration.scope_url().serialize(URL::ExcludeFragment::Yes).to_byte_string() };
+
+    // 2. If objectMap[registration] does not exist, then:
+    if (!object_map.contains(key)) {
+        // 1. Let registrationObject be a new ServiceWorkerRegistration in environment’s Realm.
+        // 2. Set registrationObject’s service worker registration to registration.
+        // 3. Set registrationObject’s installing attribute to null.
+        // 4. Set registrationObject’s waiting attribute to null.
+        // 5. Set registrationObject’s active attribute to null.
+        auto registration_object = ServiceWorker::ServiceWorkerRegistration::create(realm(), registration);
+
+        // 6. If registration’s installing worker is not null, then set registrationObject’s installing attribute to the result of getting the service worker object that represents registration’s installing worker in environment.
+        if (registration.installing_worker())
+            registration_object->set_installing(get_service_worker_object(registration.installing_worker()));
+
+        // 7. If registration’s waiting worker is not null, then set registrationObject’s waiting attribute to the result of getting the service worker object that represents registration’s waiting worker in environment.
+        if (registration.waiting_worker())
+            registration_object->set_waiting(get_service_worker_object(registration.waiting_worker()));
+
+        // 8. If registration’s active worker is not null, then set registrationObject’s active attribute to the result of getting the service worker object that represents registration’s active worker in environment.
+        if (registration.active_worker())
+            registration_object->set_active(get_service_worker_object(registration.active_worker()));
+
+        // 9. Set objectMap[registration] to registrationObject.
+        object_map.set(key, registration_object);
+    }
+
+    // 3. Return objectMap[registration].
+    return *object_map.get(key);
+}
+
+GC::Ref<ServiceWorker::ServiceWorker> EnvironmentSettingsObject::get_service_worker_object(ServiceWorker::ServiceWorkerRecord* service_worker)
+{
+    // 1. Let objectMap be environment’s service worker object map.
+    auto& object_map = this->m_service_worker_object_map;
+
+    // 2. If objectMap[serviceWorker] does not exist, then:
+    if (!object_map.contains(service_worker)) {
+        // 1. Let serviceWorkerObj be a new ServiceWorker in environment’s Realm, and associate it with serviceWorker.
+        auto service_worker_obj = ServiceWorker::ServiceWorker::create(realm(), service_worker);
+
+        // 2. Set serviceWorkerObj’s state to serviceWorker’s state.
+        service_worker_obj->set_service_worker_state(service_worker->state);
+
+        // 3. Set objectMap[serviceWorker] to serviceWorkerObj.
+        object_map.set(service_worker, service_worker_obj);
+    }
+
+    // 3. Return objectMap[serviceWorker].
+    return *object_map.get(service_worker);
+}
+
 }