1 files changed, 55 insertions, 0 deletions
diff --git a/dom/storage/SessionStorageObserver.cpp b/dom/storage/SessionStorageObserver.cpp
new file mode 100644
index 0000000000..2963a046be
--- /dev/null
+++ b/dom/storage/SessionStorageObserver.cpp
@@ -0,0 +1,55 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "SessionStorageObserver.h"
+#include "StorageIPC.h"
+#include "mozilla/dom/LocalStorageCommon.h"
+
+namespace mozilla::dom {
+
+namespace {
+
+SessionStorageObserver* gSessionStorageObserver = nullptr;
+
+}  // namespace
+
+SessionStorageObserver::SessionStorageObserver() : mActor(nullptr) {
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(NextGenLocalStorageEnabled());
+
+  MOZ_ASSERT(!gSessionStorageObserver);
+  gSessionStorageObserver = this;
+}
+
+SessionStorageObserver::~SessionStorageObserver() {
+  AssertIsOnOwningThread();
+
+  if (mActor) {
+    mActor->SendDeleteMeInternal();
+    MOZ_ASSERT(!mActor, "SendDeleteMeInternal should have cleared!");
+  }
+
+  MOZ_ASSERT(gSessionStorageObserver);
+  gSessionStorageObserver = nullptr;
+}
+
+// static
+SessionStorageObserver* SessionStorageObserver::Get() {
+  MOZ_ASSERT(NS_IsMainThread());
+  MOZ_ASSERT(NextGenLocalStorageEnabled());
+
+  return gSessionStorageObserver;
+}
+
+void SessionStorageObserver::SetActor(SessionStorageObserverChild* aActor) {
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aActor);
+  MOZ_ASSERT(!mActor);
+
+  mActor = aActor;
+}
+
+}  // namespace mozilla::dom