content/child/service_worker/service_worker_network_provider.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_CHILD_SERVICE_WORKER_SERVICE_WORKER_NETWORK_PROVIDER_H_
   6 #define CONTENT_CHILD_SERVICE_WORKER_SERVICE_WORKER_NETWORK_PROVIDER_H_
   7
   8 #include "base/compiler_specific.h"
   9 #include "base/memory/ref_counted.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "base/supports_user_data.h"
  12 #include "content/common/content_export.h"
  13 #include "content/common/service_worker/service_worker_types.h"
  14
  15 namespace content {
  16
  17 class ServiceWorkerProviderContext;
  18
  19 // A unique provider_id is generated for each instance.
  20 // Instantiated prior to the main resource load being started and remains
  21 // allocated until after the last subresource load has occurred.
  22 // This is used to track the lifetime of a Document to create
  23 // and dispose the ServiceWorkerProviderHost in the browser process
  24 // to match its lifetime. Each request coming from the Document is
  25 // tagged with this id in willSendRequest.
  26 //
  27 // Basically, it's a scoped integer that sends an ipc upon construction
  28 // and destruction.
  29 class CONTENT_EXPORT ServiceWorkerNetworkProvider
  30     : public base::SupportsUserData::Data {
  31  public:
  32   // Ownership is transferred to the DocumentState.
  33   static void AttachToDocumentState(
  34       base::SupportsUserData* document_state,
  35       scoped_ptr<ServiceWorkerNetworkProvider> network_provider);
  36
  37   static ServiceWorkerNetworkProvider* FromDocumentState(
  38       base::SupportsUserData* document_state);
  39
  40   ServiceWorkerNetworkProvider(int render_frame_id,
  41                                ServiceWorkerProviderType type);
  42   ~ServiceWorkerNetworkProvider() override;
  43
  44   int provider_id() const { return provider_id_; }
  45   ServiceWorkerProviderContext* context() { return context_.get(); }
  46
  47   // This method is called for a provider that's associated with a
  48   // running service worker script. The version_id indicates which
  49   // ServiceWorkerVersion should be used.
  50   void SetServiceWorkerVersionId(int64 version_id);
  51
  52  private:
  53   const int provider_id_;
  54   scoped_refptr<ServiceWorkerProviderContext> context_;
  55   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerNetworkProvider);
  56 };
  57
  58 }  // namespace content
  59
  60 #endif  // CONTENT_CHILD_SERVICE_WORKER_SERVICE_WORKER_NETWORK_PROVIDER_H_