1 files changed, 72 insertions, 0 deletions
diff --git a/dom/locks/Lock.h b/dom/locks/Lock.h
new file mode 100644
index 0000000000..ced0fc3785
--- /dev/null
+++ b/dom/locks/Lock.h
@@ -0,0 +1,72 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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/. */
+
+#ifndef mozilla_dom_Lock_h
+#define mozilla_dom_Lock_h
+
+#include "js/TypeDecls.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/ErrorResult.h"
+#include "mozilla/WeakPtr.h"
+#include "mozilla/dom/BindingDeclarations.h"
+#include "mozilla/dom/LockManagerBinding.h"
+#include "mozilla/dom/PromiseNativeHandler.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsWrapperCache.h"
+
+namespace mozilla::dom {
+
+class LockManager;
+namespace locks {
+class LockRequestChild;
+}
+
+class Lock final : public PromiseNativeHandler, public nsWrapperCache {
+  friend class LockManager;
+
+ public:
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(Lock)
+
+  Lock(nsIGlobalObject* aGlobal,
+       const WeakPtr<locks::LockRequestChild>& aLockRequestChild,
+       const nsString& aName, LockMode aMode,
+       const RefPtr<Promise>& aReleasedPromise, ErrorResult& aRv);
+
+ protected:
+  ~Lock() = default;
+
+ public:
+  nsIGlobalObject* GetParentObject() const { return mOwner; };
+
+  JSObject* WrapObject(JSContext* aCx,
+                       JS::Handle<JSObject*> aGivenProto) override;
+
+  void GetName(nsString& aRetVal) const;
+
+  LockMode Mode() const;
+
+  Promise& GetWaitingPromise();
+
+  // PromiseNativeHandler
+  virtual void ResolvedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue,
+                                ErrorResult& aRv) override;
+  virtual void RejectedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue,
+                                ErrorResult& aRv) override;
+
+ private:
+  nsCOMPtr<nsIGlobalObject> mOwner;
+  WeakPtr<locks::LockRequestChild> mLockRequestChild;
+
+  nsString mName;
+  LockMode mMode;
+  RefPtr<Promise> mWaitingPromise;
+  RefPtr<Promise> mReleasedPromise;
+};
+
+}  // namespace mozilla::dom
+
+#endif  // mozilla_dom_Lock_h