dom/locks/Lock.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim:set ts=2 sw=2 sts=2 et cindent: */
   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
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_dom_Lock_h
   8 #define mozilla_dom_Lock_h
   9
  10 #include "js/TypeDecls.h"
  11 #include "mozilla/Attributes.h"
  12 #include "mozilla/ErrorResult.h"
  13 #include "mozilla/WeakPtr.h"
  14 #include "mozilla/dom/BindingDeclarations.h"
  15 #include "mozilla/dom/LockManagerBinding.h"
  16 #include "mozilla/dom/PromiseNativeHandler.h"
  17 #include "nsCycleCollectionParticipant.h"
  18 #include "nsWrapperCache.h"
  19
  20 namespace mozilla::dom {
  21
  22 class LockManager;
  23 namespace locks {
  24 class LockRequestChild;
  25 }
  26
  27 class Lock final : public PromiseNativeHandler, public nsWrapperCache {
  28   friend class LockManager;
  29
  30  public:
  31   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
  32   NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(Lock)
  33
  34   Lock(nsIGlobalObject* aGlobal,
  35        const WeakPtr<locks::LockRequestChild>& aLockRequestChild,
  36        const nsString& aName, LockMode aMode,
  37        const RefPtr<Promise>& aReleasedPromise, ErrorResult& aRv);
  38
  39  protected:
  40   ~Lock() = default;
  41
  42  public:
  43   nsIGlobalObject* GetParentObject() const { return mOwner; };
  44
  45   JSObject* WrapObject(JSContext* aCx,
  46                        JS::Handle<JSObject*> aGivenProto) override;
  47
  48   void GetName(nsString& aRetVal) const;
  49
  50   LockMode Mode() const;
  51
  52   Promise& GetWaitingPromise();
  53
  54   // PromiseNativeHandler
  55   virtual void ResolvedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue,
  56                                 ErrorResult& aRv) override;
  57   virtual void RejectedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue,
  58                                 ErrorResult& aRv) override;
  59
  60  private:
  61   nsCOMPtr<nsIGlobalObject> mOwner;
  62   WeakPtr<locks::LockRequestChild> mLockRequestChild;
  63
  64   nsString mName;
  65   LockMode mMode;
  66   RefPtr<Promise> mWaitingPromise;
  67   RefPtr<Promise> mReleasedPromise;
  68 };
  69
  70 }  // namespace mozilla::dom
  71
  72 #endif  // mozilla_dom_Lock_h