gecko-dev/dom/fetch/FetchObserver.cpp

100 lines
2.5 KiB
C++

/* -*- 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"
namespace mozilla {
namespace dom {
NS_IMPL_CYCLE_COLLECTION_CLASS(FetchObserver)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(FetchObserver,
DOMEventTargetHelper)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mFollowingSignal)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(FetchObserver,
DOMEventTargetHelper)
tmp->Unfollow();
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::Abort()
{
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, NS_LITERAL_STRING("statechange"), init);
event->SetTrusted(true);
DispatchEvent(*event);
}
} // dom namespace
} // mozilla namespace