dom/locks/Lock.cpp

   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 #include "mozilla/dom/Lock.h"
   8 #include "mozilla/dom/LockBinding.h"
   9 #include "mozilla/dom/LockManager.h"
  10 #include "mozilla/dom/Promise.h"
  11 #include "mozilla/dom/locks/LockRequestChild.h"
  12
  13 namespace mozilla::dom {
  14
  15 NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(Lock, mOwner, mWaitingPromise,
  16                                       mReleasedPromise)
  17 NS_IMPL_CYCLE_COLLECTING_ADDREF(Lock)
  18 NS_IMPL_CYCLE_COLLECTING_RELEASE(Lock)
  19 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Lock)
  20   NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
  21   NS_INTERFACE_MAP_ENTRY(nsISupports)
  22 NS_INTERFACE_MAP_END
  23
  24 Lock::Lock(nsIGlobalObject* aGlobal,
  25            const WeakPtr<locks::LockRequestChild>& aLockRequestChild,
  26            const nsString& aName, LockMode aMode,
  27            const RefPtr<Promise>& aReleasedPromise, ErrorResult& aRv)
  28     : mOwner(aGlobal),
  29       mLockRequestChild(aLockRequestChild),
  30       mName(aName),
  31       mMode(aMode),
  32       mWaitingPromise(Promise::Create(aGlobal, aRv)),
  33       mReleasedPromise(aReleasedPromise) {
  34   MOZ_ASSERT(mLockRequestChild);
  35   MOZ_ASSERT(aReleasedPromise);
  36 }
  37
  38 JSObject* Lock::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
  39   return Lock_Binding::Wrap(aCx, this, aGivenProto);
  40 }
  41
  42 void Lock::GetName(nsString& aRetVal) const { aRetVal = mName; }
  43
  44 LockMode Lock::Mode() const { return mMode; }
  45
  46 Promise& Lock::GetWaitingPromise() {
  47   MOZ_ASSERT(mWaitingPromise);
  48   return *mWaitingPromise;
  49 }
  50
  51 void Lock::ResolvedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue,
  52                             ErrorResult& aRv) {
  53   if (mLockRequestChild) {
  54     locks::PLockRequestChild::Send__delete__(mLockRequestChild, false);
  55     mLockRequestChild = nullptr;
  56   }
  57   mReleasedPromise->MaybeResolve(aValue);
  58 }
  59
  60 void Lock::RejectedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue,
  61                             ErrorResult& aRv) {
  62   if (mLockRequestChild) {
  63     locks::PLockRequestChild::Send__delete__(mLockRequestChild, false);
  64     mLockRequestChild = nullptr;
  65   }
  66   mReleasedPromise->MaybeReject(aValue);
  67 }
  68
  69 }  // namespace mozilla::dom