dom/storage/SessionStorageService.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef DOM_STORAGE_SESSIONSTORAGESERVICE_H_
   8 #define DOM_STORAGE_SESSIONSTORAGESERVICE_H_
   9
  10 #include "nsISessionStorageService.h"
  11 #include "mozilla/Result.h"
  12 #include "mozilla/dom/FlippedOnce.h"
  13 #include "mozilla/dom/PBackgroundSessionStorageServiceChild.h"
  14
  15 namespace mozilla {
  16
  17 struct CreateIfNonExistent;
  18
  19 namespace dom {
  20
  21 class SessionStorageService final
  22     : public nsISessionStorageService,
  23       public PBackgroundSessionStorageServiceChild {
  24  public:
  25   NS_DECL_ISUPPORTS
  26   NS_DECL_NSISESSIONSTORAGESERVICE
  27
  28   SessionStorageService();
  29
  30   // Singleton Boilerplate
  31   static mozilla::Result<RefPtr<SessionStorageService>, nsresult> Acquire(
  32       const CreateIfNonExistent&);
  33
  34   // Can return null if the service hasn't be created yet or after
  35   // XPCOMShutdown.
  36   static RefPtr<SessionStorageService> Acquire();
  37
  38  private:
  39   ~SessionStorageService();
  40
  41   mozilla::Result<Ok, nsresult> Init();
  42
  43   void Shutdown();
  44
  45   // IPDL methods are only called by IPDL.
  46   void ActorDestroy(ActorDestroyReason aWhy) override;
  47
  48   FlippedOnce<false> mInitialized;
  49   FlippedOnce<false> mActorDestroyed;
  50 };
  51
  52 }  // namespace dom
  53 }  // namespace mozilla
  54
  55 #endif /* DOM_STORAGE_SESSIONSTORAGESERVICE_H_ */