already_AddRefed<Promise>
WorkerDataStore::GetLength(JSContext* aCx, ErrorResult& aRv)
{
WorkerPrivate* workerPrivate = GetWorkerPrivateFromContext(aCx);
MOZ_ASSERT(workerPrivate);
workerPrivate->AssertIsOnWorkerThread();
RefPtr<Promise> promise = Promise::Create(workerPrivate->GlobalScope(), aRv);
if (aRv.Failed()) {
return nullptr;
}
RefPtr<DataStoreGetLengthRunnable> runnable =
new DataStoreGetLengthRunnable(workerPrivate,
mBackingStore,
promise);
runnable->Dispatch(aRv);
if (aRv.Failed()) {
return nullptr;
}
if (runnable->Failed()) {
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
return promise.forget();
}
already_AddRefed<Promise>
WorkerDataStore::Remove(JSContext* aCx,
const StringOrUnsignedLong& aId,
const nsAString& aRevisionId,
ErrorResult& aRv)
{
WorkerPrivate* workerPrivate = GetWorkerPrivateFromContext(aCx);
MOZ_ASSERT(workerPrivate);
workerPrivate->AssertIsOnWorkerThread();
RefPtr<Promise> promise = Promise::Create(workerPrivate->GlobalScope(), aRv);
if (aRv.Failed()) {
return nullptr;
}
RefPtr<DataStoreRemoveRunnable> runnable =
new DataStoreRemoveRunnable(workerPrivate,
mBackingStore,
promise,
aId,
aRevisionId);
runnable->Dispatch(aRv);
if (aRv.Failed()) {
return nullptr;
}
if (runnable->Failed()) {
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
return promise.forget();
}
already_AddRefed<WorkerDataStoreCursor>
WorkerDataStore::Sync(JSContext* aCx,
const nsAString& aRevisionId,
ErrorResult& aRv)
{
WorkerPrivate* workerPrivate = GetWorkerPrivateFromContext(aCx);
MOZ_ASSERT(workerPrivate);
workerPrivate->AssertIsOnWorkerThread();
// Create a WorkerDataStoreCursor on the worker. Note that we need to pass
// this WorkerDataStore into the WorkerDataStoreCursor, so that it can keep
// track of which WorkerDataStore owns the WorkerDataStoreCursor.
RefPtr<WorkerDataStoreCursor> workerCursor =
new WorkerDataStoreCursor(this);
// DataStoreSyncStoreRunnable will point the WorkerDataStoreCursor to the
// DataStoreCursor created on the main thread.
RefPtr<DataStoreSyncStoreRunnable> runnable =
new DataStoreSyncStoreRunnable(workerPrivate,
mBackingStore,
workerCursor,
aRevisionId);
runnable->Dispatch(aRv);
if (aRv.Failed()) {
return nullptr;
}
if (runnable->Failed()) {
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
return workerCursor.forget();
}
static JSObject*
GetDataStoresStructuredCloneCallbacksRead(JSContext* aCx,
JSStructuredCloneReader* aReader,
uint32_t aTag,
uint32_t aData,
void* aClosure)
{
WorkerPrivate* workerPrivate = GetWorkerPrivateFromContext(aCx);
MOZ_ASSERT(workerPrivate);
workerPrivate->AssertIsOnWorkerThread();
if (aTag != WORKER_DATA_STORES_TAG) {
MOZ_ASSERT(false, "aTag must be WORKER_DATA_STORES_TAG!");
return nullptr;
}
NS_ASSERTION(!aData, "aData should be empty");
// Read the holder from the buffer, which points to the data store.
nsMainThreadPtrHolder<DataStore>* dataStoreholder;
if (!JS_ReadBytes(aReader, &dataStoreholder, sizeof(dataStoreholder))) {
MOZ_ASSERT(false, "cannot read bytes for dataStoreholder!");
return nullptr;
}
// Protect workerStoreObj from moving GC during ~nsRefPtr.
JS::Rooted<JSObject*> workerStoreObj(aCx, nullptr);
{
nsRefPtr<WorkerDataStore> workerStore =
new WorkerDataStore(workerPrivate->GlobalScope());
nsMainThreadPtrHandle<DataStore> backingStore(dataStoreholder);
// When we're on the worker thread, prepare a DataStoreChangeEventProxy.
nsRefPtr<DataStoreChangeEventProxy> eventProxy =
new DataStoreChangeEventProxy(workerPrivate, workerStore);
// Add the DataStoreChangeEventProxy as an event listener on the main thread.
nsRefPtr<DataStoreAddEventListenerRunnable> runnable =
new DataStoreAddEventListenerRunnable(workerPrivate,
backingStore,
eventProxy);
runnable->Dispatch(aCx);
// Point WorkerDataStore to DataStore.
workerStore->SetBackingDataStore(backingStore);
JS::Rooted<JSObject*> global(aCx, JS::CurrentGlobalOrNull(aCx));
if (!global) {
MOZ_ASSERT(false, "cannot get global!");
} else {
workerStoreObj = workerStore->WrapObject(aCx);
if (!JS_WrapObject(aCx, &workerStoreObj)) {
MOZ_ASSERT(false, "cannot wrap object for workerStoreObj!");
workerStoreObj = nullptr;
}
}
}
return workerStoreObj;
}
already_AddRefed<Promise>
WorkerDataStore::Add(JSContext* aCx,
JS::Handle<JS::Value> aObj,
const Optional<StringOrUnsignedLong>& aId,
const nsAString& aRevisionId,
ErrorResult& aRv)
{
WorkerPrivate* workerPrivate = GetWorkerPrivateFromContext(aCx);
MOZ_ASSERT(workerPrivate);
workerPrivate->AssertIsOnWorkerThread();
nsRefPtr<Promise> promise = Promise::Create(workerPrivate->GlobalScope(), aRv);
if (aRv.Failed()) {
return nullptr;
}
nsRefPtr<DataStoreAddRunnable> runnable =
new DataStoreAddRunnable(workerPrivate,
mBackingStore,
promise,
aCx,
aObj,
aId,
aRevisionId,
aRv);
runnable->Dispatch(aCx);
return promise.forget();
}
/* static */ bool
OffscreenCanvas::PrefEnabled(JSContext* aCx, JSObject* aObj)
{
if (NS_IsMainThread()) {
return Preferences::GetBool("gfx.offscreencanvas.enabled");
} else {
WorkerPrivate* workerPrivate = GetWorkerPrivateFromContext(aCx);
MOZ_ASSERT(workerPrivate);
return workerPrivate->OffscreenCanvasEnabled();
}
}
already_AddRefed<WorkerDataStore>
WorkerDataStore::Constructor(GlobalObject& aGlobal, ErrorResult& aRv)
{
JSContext* cx = aGlobal.GetContext();
WorkerPrivate* workerPrivate = GetWorkerPrivateFromContext(cx);
MOZ_ASSERT(workerPrivate);
workerPrivate->AssertIsOnWorkerThread();
nsRefPtr<WorkerDataStore> store =
new WorkerDataStore(workerPrivate->GlobalScope());
return store.forget();
}
/* static */ bool
ChromeWorker::WorkerAvailable(JSContext* aCx, JSObject* /* unused */)
{
// Chrome is always allowed to use workers, and content is never
// allowed to use ChromeWorker, so all we have to check is the
// caller. However, chrome workers apparently might not have a
// system principal, so we have to check for them manually.
if (NS_IsMainThread()) {
return nsContentUtils::IsSystemCaller(aCx);
}
return GetWorkerPrivateFromContext(aCx)->IsChromeWorker();
}
bool
LoadWorkerScript(JSContext* aCx)
{
WorkerPrivate* worker = GetWorkerPrivateFromContext(aCx);
NS_ASSERTION(worker, "This should never be null!");
nsTArray<ScriptLoadInfo> loadInfos;
ScriptLoadInfo* info = loadInfos.AppendElement();
info->mURL = worker->ScriptURL();
return LoadAllScripts(aCx, worker, loadInfos, true);
}
bool
WorkerDataStore::GetReadOnly(JSContext* aCx, ErrorResult& aRv)
{
WorkerPrivate* workerPrivate = GetWorkerPrivateFromContext(aCx);
MOZ_ASSERT(workerPrivate);
workerPrivate->AssertIsOnWorkerThread();
nsRefPtr<DataStoreGetReadOnlyRunnable> runnable =
new DataStoreGetReadOnlyRunnable(workerPrivate, mBackingStore, aRv);
runnable->Dispatch(aCx);
return runnable->mReadOnly;
}
void
WorkerDataStore::GetOwner(JSContext* aCx, nsAString& aOwner, ErrorResult& aRv)
{
WorkerPrivate* workerPrivate = GetWorkerPrivateFromContext(aCx);
MOZ_ASSERT(workerPrivate);
workerPrivate->AssertIsOnWorkerThread();
RefPtr<DataStoreGetStringRunnable> runnable =
new DataStoreGetStringRunnable(workerPrivate,
mBackingStore,
&DataStore::GetOwner,
aOwner);
runnable->Dispatch(aRv);
}
/* static */ already_AddRefed<FileReader>
FileReader::Constructor(const GlobalObject& aGlobal, ErrorResult& aRv)
{
nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());
WorkerPrivate* workerPrivate = nullptr;
if (!NS_IsMainThread()) {
JSContext* cx = aGlobal.Context();
workerPrivate = GetWorkerPrivateFromContext(cx);
MOZ_ASSERT(workerPrivate);
}
RefPtr<FileReader> fileReader = new FileReader(global, workerPrivate);
return fileReader.forget();
}
bool
WorkerDataStore::GetReadOnly(JSContext* aCx, ErrorResult& aRv)
{
WorkerPrivate* workerPrivate = GetWorkerPrivateFromContext(aCx);
MOZ_ASSERT(workerPrivate);
workerPrivate->AssertIsOnWorkerThread();
RefPtr<DataStoreGetReadOnlyRunnable> runnable =
new DataStoreGetReadOnlyRunnable(workerPrivate, mBackingStore);
runnable->Dispatch(aRv);
if (aRv.Failed()) {
return true; // To be safe, I guess.
}
return runnable->mReadOnly;
}
void
FetchStreamReader::ReportErrorToConsole(JSContext* aCx,
JS::Handle<JS::Value> aValue)
{
nsCString sourceSpec;
uint32_t line = 0;
uint32_t column = 0;
nsString valueString;
nsContentUtils::ExtractErrorValues(aCx, aValue, sourceSpec, &line,
&column, valueString);
nsTArray<nsString> params;
params.AppendElement(valueString);
RefPtr<ConsoleReportCollector> reporter = new ConsoleReportCollector();
reporter->AddConsoleReport(nsIScriptError::errorFlag,
NS_LITERAL_CSTRING("ReadableStreamReader.read"),
nsContentUtils::eDOM_PROPERTIES,
sourceSpec, line, column,
NS_LITERAL_CSTRING("ReadableStreamReadingFailed"),
params);
uint64_t innerWindowId = 0;
if (NS_IsMainThread()) {
nsCOMPtr<nsPIDOMWindowInner> window = do_QueryInterface(mGlobal);
if (window) {
innerWindowId = window->WindowID();
}
reporter->FlushReportsToConsole(innerWindowId);
return;
}
WorkerPrivate* workerPrivate = GetWorkerPrivateFromContext(aCx);
if (workerPrivate) {
innerWindowId = workerPrivate->WindowID();
}
RefPtr<Runnable> r = NS_NewRunnableFunction(
"FetchStreamReader::ReportErrorToConsole",
[reporter, innerWindowId] () {
reporter->FlushReportsToConsole(innerWindowId);
});
workerPrivate->DispatchToMainThread(r.forget());
}
already_AddRefed<Promise>
WorkerNavigator::GetDataStores(JSContext* aCx,
const nsAString& aName,
const nsAString& aOwner,
ErrorResult& aRv)
{
WorkerPrivate* workerPrivate = GetWorkerPrivateFromContext(aCx);
MOZ_ASSERT(workerPrivate);
workerPrivate->AssertIsOnWorkerThread();
nsRefPtr<Promise> promise = Promise::Create(workerPrivate->GlobalScope(), aRv);
if (aRv.Failed()) {
return nullptr;
}
nsRefPtr<NavigatorGetDataStoresRunnable> runnable =
new NavigatorGetDataStoresRunnable(workerPrivate, promise, aName, aOwner, aRv);
runnable->Dispatch(aCx);
return promise.forget();
}
already_AddRefed<Promise>
WorkerDataStore::Put(JSContext* aCx,
JS::Handle<JS::Value> aObj,
const StringOrUnsignedLong& aId,
const nsAString& aRevisionId,
ErrorResult& aRv)
{
WorkerPrivate* workerPrivate = GetWorkerPrivateFromContext(aCx);
MOZ_ASSERT(workerPrivate);
workerPrivate->AssertIsOnWorkerThread();
RefPtr<Promise> promise = Promise::Create(workerPrivate->GlobalScope(), aRv);
if (aRv.Failed()) {
return nullptr;
}
RefPtr<DataStorePutRunnable> runnable =
new DataStorePutRunnable(workerPrivate,
mBackingStore,
promise,
aId,
aRevisionId);
runnable->Write(aCx, aObj, aRv);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
runnable->Dispatch(aRv);
if (aRv.Failed()) {
return nullptr;
}
if (NS_FAILED(runnable->ErrorCode())) {
aRv.Throw(runnable->ErrorCode());
return nullptr;
}
return promise.forget();
}
/* static */ already_AddRefed<FileReader>
FileReader::Constructor(const GlobalObject& aGlobal, ErrorResult& aRv)
{
// The owner can be null when this object is used by chrome code.
nsCOMPtr<nsPIDOMWindow> owner = do_QueryInterface(aGlobal.GetAsSupports());
WorkerPrivate* workerPrivate = nullptr;
if (!NS_IsMainThread()) {
JSContext* cx = aGlobal.Context();
workerPrivate = GetWorkerPrivateFromContext(cx);
MOZ_ASSERT(workerPrivate);
}
RefPtr<FileReader> fileReader = new FileReader(owner, workerPrivate);
if (!owner && nsContentUtils::ThreadsafeIsCallerChrome()) {
// Instead of grabbing some random global from the context stack,
// let's use the default one (junk scope) for now.
// We should move away from this Init...
fileReader->BindToOwner(xpc::NativeGlobal(xpc::PrivilegedJunkScope()));
}
return fileReader.forget();
}
bool
Load(JSContext* aCx, uintN aURLCount, jsval* aURLs)
{
WorkerPrivate* worker = GetWorkerPrivateFromContext(aCx);
NS_ASSERTION(worker, "This should never be null!");
if (!aURLCount) {
return true;
}
if (aURLCount > MAX_CONCURRENT_SCRIPTS) {
JS_ReportError(aCx, "Cannot load more than %d scripts at one time!",
MAX_CONCURRENT_SCRIPTS);
return false;
}
nsTArray<ScriptLoadInfo> loadInfos;
loadInfos.SetLength(PRUint32(aURLCount));
for (uintN index = 0; index < aURLCount; index++) {
JSString* str = JS_ValueToString(aCx, aURLs[index]);
if (!str) {
return false;
}
size_t length;
const jschar* buffer = JS_GetStringCharsAndLength(aCx, str, &length);
if (!buffer) {
return false;
}
loadInfos[index].mURL.Assign(buffer, length);
}
return LoadAllScripts(aCx, worker, loadInfos, false);
}
already_AddRefed<Promise>
WorkerDataStore::Get(JSContext* aCx,
const Sequence<OwningStringOrUnsignedLong>& aId,
ErrorResult& aRv)
{
WorkerPrivate* workerPrivate = GetWorkerPrivateFromContext(aCx);
MOZ_ASSERT(workerPrivate);
workerPrivate->AssertIsOnWorkerThread();
RefPtr<Promise> promise = Promise::Create(workerPrivate->GlobalScope(), aRv);
if (aRv.Failed()) {
return nullptr;
}
RefPtr<DataStoreGetRunnable> runnable =
new DataStoreGetRunnable(workerPrivate,
mBackingStore,
promise);
if (!runnable->Id().AppendElements(aId, fallible)) {
aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
return nullptr;
}
runnable->Dispatch(aRv);
if (aRv.Failed()) {
return nullptr;
}
if (runnable->Failed()) {
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
return promise.forget();
}
already_AddRefed<Promise>
WorkerDataStore::Clear(JSContext* aCx,
const nsAString& aRevisionId,
ErrorResult& aRv)
{
WorkerPrivate* workerPrivate = GetWorkerPrivateFromContext(aCx);
MOZ_ASSERT(workerPrivate);
workerPrivate->AssertIsOnWorkerThread();
nsRefPtr<Promise> promise = Promise::Create(workerPrivate->GlobalScope(), aRv);
if (aRv.Failed()) {
return nullptr;
}
nsRefPtr<DataStoreClearRunnable> runnable =
new DataStoreClearRunnable(workerPrivate,
mBackingStore,
promise,
aRevisionId,
aRv);
runnable->Dispatch(aCx);
return promise.forget();
}
/* static */ already_AddRefed<BroadcastChannel>
BroadcastChannel::Constructor(const GlobalObject& aGlobal,
const nsAString& aChannel,
ErrorResult& aRv)
{
nsCOMPtr<nsPIDOMWindowInner> window =
do_QueryInterface(aGlobal.GetAsSupports());
// Window is null in workers.
RefPtr<BroadcastChannel> bc = new BroadcastChannel(window, aChannel);
nsAutoCString origin;
PrincipalInfo principalInfo;
if (NS_IsMainThread()) {
nsCOMPtr<nsIGlobalObject> incumbent = mozilla::dom::GetIncumbentGlobal();
if (!incumbent) {
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
nsIPrincipal* principal = incumbent->PrincipalOrNull();
if (!principal) {
aRv.Throw(NS_ERROR_UNEXPECTED);
return nullptr;
}
aRv = principal->GetOrigin(origin);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
aRv = PrincipalToPrincipalInfo(principal, &principalInfo);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
} else {
JSContext* cx = aGlobal.Context();
WorkerPrivate* workerPrivate = GetWorkerPrivateFromContext(cx);
MOZ_ASSERT(workerPrivate);
RefPtr<StrongWorkerRef> workerRef =
StrongWorkerRef::Create(workerPrivate, "BroadcastChannel",
[bc] () { bc->Shutdown(); });
// We are already shutting down the worker. Let's return a non-active
// object.
if (NS_WARN_IF(!workerRef)) {
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
RefPtr<ThreadSafeWorkerRef> tsr = new ThreadSafeWorkerRef(workerRef);
RefPtr<InitializeRunnable> runnable =
new InitializeRunnable(tsr, origin, principalInfo, aRv);
runnable->Dispatch(Canceling, aRv);
if (aRv.Failed()) {
return nullptr;
}
bc->mWorkerRef = Move(workerRef);
}
// Register this component to PBackground.
PBackgroundChild* actorChild = BackgroundChild::GetOrCreateForCurrentThread();
if (NS_WARN_IF(!actorChild)) {
// Firefox is probably shutting down. Let's return a 'generic' error.
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
PBroadcastChannelChild* actor =
actorChild->SendPBroadcastChannelConstructor(principalInfo, origin,
nsString(aChannel));
bc->mActor = static_cast<BroadcastChannelChild*>(actor);
MOZ_ASSERT(bc->mActor);
bc->mActor->SetParent(bc);
return bc.forget();
}
/* static */ already_AddRefed<BroadcastChannel>
BroadcastChannel::Constructor(const GlobalObject& aGlobal,
const nsAString& aChannel,
ErrorResult& aRv)
{
nsCOMPtr<nsPIDOMWindowInner> window =
do_QueryInterface(aGlobal.GetAsSupports());
// Window is null in workers.
nsAutoCString origin;
PrincipalInfo principalInfo;
WorkerPrivate* workerPrivate = nullptr;
if (NS_IsMainThread()) {
nsCOMPtr<nsIGlobalObject> incumbent = mozilla::dom::GetIncumbentGlobal();
if (!incumbent) {
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
nsIPrincipal* principal = incumbent->PrincipalOrNull();
if (!principal) {
aRv.Throw(NS_ERROR_UNEXPECTED);
return nullptr;
}
aRv = principal->GetOrigin(origin);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
aRv = PrincipalToPrincipalInfo(principal, &principalInfo);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
} else {
JSContext* cx = aGlobal.Context();
workerPrivate = GetWorkerPrivateFromContext(cx);
MOZ_ASSERT(workerPrivate);
RefPtr<InitializeRunnable> runnable =
new InitializeRunnable(workerPrivate, origin, principalInfo, aRv);
runnable->Dispatch(Closing, aRv);
}
if (aRv.Failed()) {
return nullptr;
}
RefPtr<BroadcastChannel> bc =
new BroadcastChannel(window, principalInfo, origin, aChannel);
// Register this component to PBackground.
PBackgroundChild* actor = BackgroundChild::GetForCurrentThread();
if (actor) {
bc->ActorCreated(actor);
} else {
BackgroundChild::GetOrCreateForCurrentThread(bc);
}
if (!workerPrivate) {
MOZ_ASSERT(window);
MOZ_ASSERT(window->IsInnerWindow());
bc->mInnerID = window->WindowID();
// Register as observer for inner-window-destroyed.
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
if (obs) {
obs->AddObserver(bc, "inner-window-destroyed", false);
}
} else {
bc->mWorkerHolder = new BroadcastChannelWorkerHolder(bc);
if (NS_WARN_IF(!bc->mWorkerHolder->HoldWorker(workerPrivate, Closing))) {
bc->mWorkerHolder = nullptr;
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
}
return bc.forget();
}
/* static */ already_AddRefed<BroadcastChannel>
BroadcastChannel::Constructor(const GlobalObject& aGlobal,
const nsAString& aChannel,
ErrorResult& aRv)
{
nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(aGlobal.GetAsSupports());
// Window is null in workers.
nsAutoString origin;
PrincipalInfo principalInfo;
bool privateBrowsing = false;
WorkerPrivate* workerPrivate = nullptr;
if (NS_IsMainThread()) {
nsCOMPtr<nsIGlobalObject> incumbent = mozilla::dom::GetIncumbentGlobal();
if (!incumbent) {
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
nsIPrincipal* principal = incumbent->PrincipalOrNull();
if (!principal) {
aRv.Throw(NS_ERROR_UNEXPECTED);
return nullptr;
}
bool isNullPrincipal;
aRv = principal->GetIsNullPrincipal(&isNullPrincipal);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
if (NS_WARN_IF(isNullPrincipal)) {
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
GetOrigin(principal, origin, aRv);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
aRv = PrincipalToPrincipalInfo(principal, &principalInfo);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
nsIDocument* doc = window->GetExtantDoc();
if (doc) {
privateBrowsing = nsContentUtils::IsInPrivateBrowsing(doc);
// No bfcache when BroadcastChannel is used.
doc->DisallowBFCaching();
}
} else {
JSContext* cx = aGlobal.Context();
workerPrivate = GetWorkerPrivateFromContext(cx);
MOZ_ASSERT(workerPrivate);
nsRefPtr<InitializeRunnable> runnable =
new InitializeRunnable(workerPrivate, origin, principalInfo,
privateBrowsing, aRv);
runnable->Dispatch(cx);
}
if (aRv.Failed()) {
return nullptr;
}
nsRefPtr<BroadcastChannel> bc =
new BroadcastChannel(window, principalInfo, origin, aChannel,
privateBrowsing);
// Register this component to PBackground.
PBackgroundChild* actor = BackgroundChild::GetForCurrentThread();
if (actor) {
bc->ActorCreated(actor);
} else {
BackgroundChild::GetOrCreateForCurrentThread(bc);
}
if (!workerPrivate) {
MOZ_ASSERT(window);
MOZ_ASSERT(window->IsInnerWindow());
bc->mInnerID = window->WindowID();
// Register as observer for inner-window-destroyed.
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
if (obs) {
obs->AddObserver(bc, "inner-window-destroyed", false);
}
} else {
bc->mWorkerFeature = new BroadcastChannelFeature(bc);
JSContext* cx = workerPrivate->GetJSContext();
if (NS_WARN_IF(!workerPrivate->AddFeature(cx, bc->mWorkerFeature))) {
NS_WARNING("Failed to register the BroadcastChannel worker feature.");
bc->mWorkerFeature = nullptr;
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
}
return bc.forget();
}
bool
WorkerGlobalScope::IsInAutomation(JSContext* aCx, JSObject* /* unused */)
{
return GetWorkerPrivateFromContext(aCx)->IsInAutomation();
}