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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "WorkerPrivate.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_END
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(FetchObserver,
DOMEventTargetHelper)
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(FetchObserver)
NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
NS_IMPL_ADDREF_INHERITED(FetchObserver, DOMEventTargetHelper)
NS_IMPL_RELEASE_INHERITED(FetchObserver, DOMEventTargetHelper)
/* static */ bool
FetchObserver::IsEnabled(JSContext* aCx, JSObject* aGlobal)
{
if (NS_IsMainThread()) {
return Preferences::GetBool("dom.fetchObserver.enabled", false);
}
using namespace workers;
// Otherwise, check the pref via the WorkerPrivate
WorkerPrivate* workerPrivate = GetWorkerPrivateFromContext(aCx);
if (!workerPrivate) {
return false;
}
return workerPrivate->FetchObserverEnabled();
}
FetchObserver::FetchObserver(nsIGlobalObject* aGlobal,
AbortSignal* aSignal)
: DOMEventTargetHelper(aGlobal)
, mState(FetchState::Requesting)
{
if (aSignal) {
Follow(aSignal);
}
}
JSObject*
FetchObserver::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return FetchObserverBinding::Wrap(aCx, this, aGivenProto);
}
FetchState
FetchObserver::State() const
{
return mState;
}
void
FetchObserver::Aborted()
{
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);
bool dummy;
DispatchEvent(event, &dummy);
}
} // dom namespace
} // mozilla namespace
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