dom/storage/SessionStorageObserver.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=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 #include "SessionStorageObserver.h"
   8
   9 namespace mozilla {
  10 namespace dom {
  11
  12 namespace {
  13
  14 SessionStorageObserver* gSessionStorageObserver = nullptr;
  15
  16 }  // namespace
  17
  18 SessionStorageObserver::SessionStorageObserver() : mActor(nullptr) {
  19   AssertIsOnOwningThread();
  20   MOZ_ASSERT(NextGenLocalStorageEnabled());
  21
  22   MOZ_ASSERT(!gSessionStorageObserver);
  23   gSessionStorageObserver = this;
  24 }
  25
  26 SessionStorageObserver::~SessionStorageObserver() {
  27   AssertIsOnOwningThread();
  28
  29   if (mActor) {
  30     mActor->SendDeleteMeInternal();
  31     MOZ_ASSERT(!mActor, "SendDeleteMeInternal should have cleared!");
  32   }
  33
  34   MOZ_ASSERT(gSessionStorageObserver);
  35   gSessionStorageObserver = nullptr;
  36 }
  37
  38 // static
  39 SessionStorageObserver* SessionStorageObserver::Get() {
  40   MOZ_ASSERT(NS_IsMainThread());
  41   MOZ_ASSERT(NextGenLocalStorageEnabled());
  42
  43   return gSessionStorageObserver;
  44 }
  45
  46 void SessionStorageObserver::SetActor(SessionStorageObserverChild* aActor) {
  47   AssertIsOnOwningThread();
  48   MOZ_ASSERT(aActor);
  49   MOZ_ASSERT(!mActor);
  50
  51   mActor = aActor;
  52 }
  53
  54 }  // namespace dom
  55 }  // namespace mozilla