зеркало из https://github.com/mozilla/gecko-dev.git
117 строки
2.9 KiB
C++
117 строки
2.9 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "FetchObserver.h"
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#include "mozilla/dom/Event.h"
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namespace mozilla {
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namespace dom {
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NS_IMPL_CYCLE_COLLECTION_CLASS(FetchObserver)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(FetchObserver,
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DOMEventTargetHelper)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(FetchObserver,
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DOMEventTargetHelper)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(FetchObserver)
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NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
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NS_IMPL_ADDREF_INHERITED(FetchObserver, DOMEventTargetHelper)
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NS_IMPL_RELEASE_INHERITED(FetchObserver, DOMEventTargetHelper)
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/* static */ bool
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FetchObserver::IsEnabled(JSContext* aCx, JSObject* aGlobal)
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{
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if (NS_IsMainThread()) {
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return Preferences::GetBool("dom.fetchObserver.enabled", false);
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}
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using namespace workers;
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// Otherwise, check the pref via the WorkerPrivate
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WorkerPrivate* workerPrivate = GetWorkerPrivateFromContext(aCx);
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if (!workerPrivate) {
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return false;
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}
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return workerPrivate->FetchObserverEnabled();
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}
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FetchObserver::FetchObserver(nsIGlobalObject* aGlobal,
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AbortSignal* aSignal)
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: DOMEventTargetHelper(aGlobal)
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, mState(FetchState::Requesting)
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{
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if (aSignal) {
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Follow(aSignal);
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}
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}
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JSObject*
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FetchObserver::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
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{
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return FetchObserverBinding::Wrap(aCx, this, aGivenProto);
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}
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FetchState
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FetchObserver::State() const
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{
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return mState;
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}
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void
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FetchObserver::Abort()
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{
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SetState(FetchState::Aborted);
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}
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void
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FetchObserver::SetState(FetchState aState)
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{
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MOZ_ASSERT(mState < aState);
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if (mState == FetchState::Aborted ||
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mState == FetchState::Errored ||
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mState == FetchState::Complete) {
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// We are already in a final state.
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return;
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}
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// We cannot pass from Requesting to Complete directly.
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if (mState == FetchState::Requesting &&
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aState == FetchState::Complete) {
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SetState(FetchState::Responding);
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}
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mState = aState;
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if (mState == FetchState::Aborted ||
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mState == FetchState::Errored ||
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mState == FetchState::Complete) {
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Unfollow();
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}
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EventInit init;
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init.mBubbles = false;
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init.mCancelable = false;
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// TODO which kind of event should we dispatch here?
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RefPtr<Event> event =
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Event::Constructor(this, NS_LITERAL_STRING("statechange"), init);
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event->SetTrusted(true);
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bool dummy;
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DispatchEvent(event, &dummy);
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}
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} // dom namespace
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} // mozilla namespace
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