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