dom/clients/api/ClientDOMUtil.h

   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 #ifndef _mozilla_dom_ClientDOMUtil_h
   7 #define _mozilla_dom_ClientDOMUtil_h
   8
   9 #include "mozilla/dom/ClientIPCTypes.h"
  10 #include "mozilla/dom/ClientOpPromise.h"
  11 #include "mozilla/dom/DOMMozPromiseRequestHolder.h"
  12 #include "mozilla/dom/WorkerPrivate.h"
  13
  14 class nsIGlobalObject;
  15
  16 namespace mozilla::dom {
  17
  18 // Utility method to properly execute a ClientManager operation.  It
  19 // will properly hold a worker thread alive and avoid executing callbacks
  20 // if the thread is shutting down.
  21 template <typename Func, typename Arg, typename Resolve, typename Reject>
  22 void StartClientManagerOp(Func aFunc, const Arg& aArg, nsIGlobalObject* aGlobal,
  23                           Resolve aResolve, Reject aReject) {
  24   MOZ_DIAGNOSTIC_ASSERT(aGlobal);
  25
  26   nsCOMPtr<nsISerialEventTarget> target = aGlobal->SerialEventTarget();
  27   auto holder =
  28       MakeRefPtr<DOMMozPromiseRequestHolder<ClientOpPromise>>(aGlobal);
  29
  30   aFunc(aArg, target)
  31       ->Then(
  32           target, __func__,
  33           [aResolve, holder](const ClientOpResult& aResult) {
  34             holder->Complete();
  35             aResolve(aResult);
  36           },
  37           [aReject, holder](const CopyableErrorResult& aResult) {
  38             holder->Complete();
  39             aReject(aResult);
  40           })
  41       ->Track(*holder);
  42 }
  43
  44 }  // namespace mozilla::dom
  45
  46 #endif  // _mozilla_dom_ClientDOMUtil_h