diff options
Diffstat (limited to 'dom/fetch/FetchObserver.cpp')
-rw-r--r-- | dom/fetch/FetchObserver.cpp | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/dom/fetch/FetchObserver.cpp b/dom/fetch/FetchObserver.cpp new file mode 100644 index 0000000000..0c9d1b9f7a --- /dev/null +++ b/dom/fetch/FetchObserver.cpp @@ -0,0 +1,79 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "FetchObserver.h" +#include "mozilla/dom/Event.h" +#include "mozilla/dom/EventBinding.h" + +namespace mozilla::dom { + +NS_IMPL_CYCLE_COLLECTION_CLASS(FetchObserver) + +NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(FetchObserver, + DOMEventTargetHelper) +NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END + +NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(FetchObserver, + DOMEventTargetHelper) +NS_IMPL_CYCLE_COLLECTION_UNLINK_END + +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(FetchObserver) +NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper) + +NS_IMPL_ADDREF_INHERITED(FetchObserver, DOMEventTargetHelper) +NS_IMPL_RELEASE_INHERITED(FetchObserver, DOMEventTargetHelper) + +FetchObserver::FetchObserver(nsIGlobalObject* aGlobal, + AbortSignalImpl* aSignalImpl) + : DOMEventTargetHelper(aGlobal), mState(FetchState::Requesting) { + if (aSignalImpl) { + Follow(aSignalImpl); + } +} + +JSObject* FetchObserver::WrapObject(JSContext* aCx, + JS::Handle<JSObject*> aGivenProto) { + return FetchObserver_Binding::Wrap(aCx, this, aGivenProto); +} + +FetchState FetchObserver::State() const { return mState; } + +void FetchObserver::RunAbortAlgorithm() { SetState(FetchState::Aborted); } + +void FetchObserver::SetState(FetchState aState) { + MOZ_ASSERT(mState < aState); + + if (mState == FetchState::Aborted || mState == FetchState::Errored || + mState == FetchState::Complete) { + // We are already in a final state. + return; + } + + // We cannot pass from Requesting to Complete directly. + if (mState == FetchState::Requesting && aState == FetchState::Complete) { + SetState(FetchState::Responding); + } + + mState = aState; + + if (mState == FetchState::Aborted || mState == FetchState::Errored || + mState == FetchState::Complete) { + Unfollow(); + } + + EventInit init; + init.mBubbles = false; + init.mCancelable = false; + + // TODO which kind of event should we dispatch here? + + RefPtr<Event> event = Event::Constructor(this, u"statechange"_ns, init); + event->SetTrusted(true); + + DispatchEvent(*event); +} + +} // namespace mozilla::dom |