| // Copyright 2022 The Cobalt Authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "cobalt/worker/service_worker.h" |
| |
| #include <memory> |
| #include <utility> |
| |
| #include "base/bind.h" |
| #include "cobalt/base/tokens.h" |
| #include "cobalt/script/environment_settings.h" |
| #include "cobalt/script/value_handle.h" |
| #include "cobalt/web/environment_settings_helper.h" |
| #include "cobalt/web/event_target.h" |
| #include "cobalt/web/message_port.h" |
| #include "cobalt/worker/service_worker_context.h" |
| #include "cobalt/worker/service_worker_global_scope.h" |
| #include "cobalt/worker/service_worker_object.h" |
| #include "cobalt/worker/service_worker_state.h" |
| |
| namespace cobalt { |
| namespace worker { |
| |
| ServiceWorker::ServiceWorker(script::EnvironmentSettings* settings, |
| worker::ServiceWorkerObject* worker) |
| : web::EventTarget(settings), worker_(worker) {} |
| |
| void ServiceWorker::PostMessage(const script::ValueHandleHolder& message) { |
| // Algorithm for ServiceWorker.postMessage(): |
| // https://www.w3.org/TR/2022/CRD-service-workers-20220712/#service-worker-postmessage |
| |
| // 1. Let serviceWorker be the service worker represented by this. |
| ServiceWorkerObject* service_worker = service_worker_object(); |
| // 2. Let incumbentSettings be the incumbent settings object. |
| web::EnvironmentSettings* incumbent_settings = environment_settings(); |
| // 3. Let incumbentGlobal be incumbentSettingsās global object. |
| // 4. Let serializeWithTransferResult be |
| // StructuredSerializeWithTransfer(message, options["transfer"]). |
| // Rethrow any exceptions. |
| auto structured_clone = std::make_unique<script::StructuredClone>(message); |
| if (structured_clone->failed()) { |
| return; |
| } |
| // 5. If the result of running the Should Skip Event algorithm with |
| // "message" and serviceWorker is true, then return. |
| if (service_worker->ShouldSkipEvent(base::Tokens::message())) return; |
| // 6. Run these substeps in parallel: |
| ServiceWorkerContext* worker_context = |
| incumbent_settings->context()->service_worker_context(); |
| DCHECK(worker_context); |
| worker_context->message_loop()->task_runner()->PostTask( |
| FROM_HERE, |
| base::BindOnce(&ServiceWorkerContext::ServiceWorkerPostMessageSubSteps, |
| base::Unretained(worker_context), |
| base::Unretained(service_worker), |
| base::Unretained(incumbent_settings->context()), |
| std::move(structured_clone))); |
| } |
| |
| } // namespace worker |
| } // namespace cobalt |