tor-browser

The Tor Browser
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Lock.cpp (2367B)

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