dom/abort/AbortController.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   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 "AbortController.h"
   8 #include "AbortSignal.h"
   9 #include "mozilla/dom/AbortControllerBinding.h"
  10 #include "mozilla/dom/WorkerPrivate.h"
  11
  12 namespace mozilla::dom {
  13
  14 NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(AbortController, mGlobal, mSignal)
  15
  16 NS_IMPL_CYCLE_COLLECTING_ADDREF(AbortController)
  17 NS_IMPL_CYCLE_COLLECTING_RELEASE(AbortController)
  18
  19 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(AbortController)
  20   NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
  21   NS_INTERFACE_MAP_ENTRY(nsISupports)
  22 NS_INTERFACE_MAP_END
  23
  24 /* static */
  25 already_AddRefed<AbortController> AbortController::Constructor(
  26     const GlobalObject& aGlobal, ErrorResult& aRv) {
  27   nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());
  28   if (!global) {
  29     aRv.Throw(NS_ERROR_FAILURE);
  30     return nullptr;
  31   }
  32
  33   RefPtr<AbortController> abortController = new AbortController(global);
  34   return abortController.forget();
  35 }
  36
  37 AbortController::AbortController(nsIGlobalObject* aGlobal)
  38     : mGlobal(aGlobal), mAborted(false) {}
  39
  40 JSObject* AbortController::WrapObject(JSContext* aCx,
  41                                       JS::Handle<JSObject*> aGivenProto) {
  42   return AbortController_Binding::Wrap(aCx, this, aGivenProto);
  43 }
  44
  45 nsIGlobalObject* AbortController::GetParentObject() const { return mGlobal; }
  46
  47 AbortSignal* AbortController::Signal() {
  48   if (!mSignal) {
  49     mSignal = new AbortSignal(mGlobal, mAborted);
  50   }
  51
  52   return mSignal;
  53 }
  54
  55 void AbortController::Abort() {
  56   if (mAborted) {
  57     return;
  58   }
  59
  60   mAborted = true;
  61
  62   if (mSignal) {
  63     mSignal->SignalAbort();
  64   }
  65 }
  66
  67 }  // namespace mozilla::dom