dom/html/PlayPromise.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 "mozilla/dom/PlayPromise.h"
   8 #include "mozilla/Logging.h"
   9 #include "mozilla/Telemetry.h"
  10
  11 extern mozilla::LazyLogModule gMediaElementLog;
  12
  13 #define PLAY_PROMISE_LOG(msg, ...) \
  14   MOZ_LOG(gMediaElementLog, LogLevel::Debug, (msg, ##__VA_ARGS__))
  15
  16 namespace mozilla::dom {
  17
  18 PlayPromise::PlayPromise(nsIGlobalObject* aGlobal) : Promise(aGlobal) {}
  19
  20 PlayPromise::~PlayPromise() {
  21   if (!mFulfilled && PromiseObj()) {
  22     MaybeReject(NS_ERROR_DOM_ABORT_ERR);
  23   }
  24 }
  25
  26 /* static */
  27 already_AddRefed<PlayPromise> PlayPromise::Create(nsIGlobalObject* aGlobal,
  28                                                   ErrorResult& aRv) {
  29   RefPtr<PlayPromise> promise = new PlayPromise(aGlobal);
  30   promise->CreateWrapper(aRv);
  31   return aRv.Failed() ? nullptr : promise.forget();
  32 }
  33
  34 /* static */
  35 void PlayPromise::ResolvePromisesWithUndefined(
  36     const PlayPromiseArr& aPromises) {
  37   for (const auto& promise : aPromises) {
  38     promise->MaybeResolveWithUndefined();
  39   }
  40 }
  41
  42 /* static */
  43 void PlayPromise::RejectPromises(const PlayPromiseArr& aPromises,
  44                                  nsresult aError) {
  45   for (const auto& promise : aPromises) {
  46     promise->MaybeReject(aError);
  47   }
  48 }
  49
  50 void PlayPromise::MaybeResolveWithUndefined() {
  51   if (mFulfilled) {
  52     return;
  53   }
  54   mFulfilled = true;
  55   PLAY_PROMISE_LOG("PlayPromise %p resolved with undefined", this);
  56   Promise::MaybeResolveWithUndefined();
  57 }
  58
  59 static const char* ToPlayResultStr(nsresult aReason) {
  60   switch (aReason) {
  61     case NS_ERROR_DOM_MEDIA_NOT_ALLOWED_ERR:
  62       return "NotAllowedErr";
  63     case NS_ERROR_DOM_MEDIA_NOT_SUPPORTED_ERR:
  64       return "SrcNotSupportedErr";
  65     case NS_ERROR_DOM_MEDIA_ABORT_ERR:
  66       return "PauseAbortErr";
  67     case NS_ERROR_DOM_ABORT_ERR:
  68       return "AbortErr";
  69     default:
  70       return "UnknownErr";
  71   }
  72 }
  73
  74 void PlayPromise::MaybeReject(nsresult aReason) {
  75   if (mFulfilled) {
  76     return;
  77   }
  78   mFulfilled = true;
  79   PLAY_PROMISE_LOG("PlayPromise %p rejected with 0x%x (%s)", this,
  80                    static_cast<uint32_t>(aReason), ToPlayResultStr(aReason));
  81   Promise::MaybeReject(aReason);
  82 }
  83
  84 }  // namespace mozilla::dom