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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 "SharedWorker.h"
#include "nsPIDOMWindow.h"
#include "mozilla/dom/Event.h"
#include "mozilla/EventDispatcher.h"
#include "mozilla/Preferences.h"
#include "mozilla/dom/MessagePort.h"
#include "mozilla/dom/SharedWorkerBinding.h"
#include "nsContentUtils.h"
#include "nsIClassInfoImpl.h"
#include "nsIDOMEvent.h"
#include "RuntimeService.h"
#include "WorkerPrivate.h"
using mozilla::dom::Optional;
using mozilla::dom::Sequence;
using mozilla::dom::MessagePort;
using namespace mozilla;
USING_WORKERS_NAMESPACE
SharedWorker::SharedWorker(nsPIDOMWindowInner* aWindow,
WorkerPrivate* aWorkerPrivate,
MessagePort* aMessagePort)
: DOMEventTargetHelper(aWindow)
, mWorkerPrivate(aWorkerPrivate)
, mMessagePort(aMessagePort)
, mFrozen(false)
{
AssertIsOnMainThread();
MOZ_ASSERT(aWorkerPrivate);
MOZ_ASSERT(aMessagePort);
}
SharedWorker::~SharedWorker()
{
AssertIsOnMainThread();
}
// static
already_AddRefed<SharedWorker>
SharedWorker::Constructor(const GlobalObject& aGlobal, JSContext* aCx,
const nsAString& aScriptURL,
const mozilla::dom::Optional<nsAString>& aName,
ErrorResult& aRv)
{
AssertIsOnMainThread();
RuntimeService* rts = RuntimeService::GetOrCreateService();
if (!rts) {
aRv = NS_ERROR_NOT_AVAILABLE;
return nullptr;
}
nsCString name;
if (aName.WasPassed()) {
name = NS_ConvertUTF16toUTF8(aName.Value());
}
RefPtr<SharedWorker> sharedWorker;
nsresult rv = rts->CreateSharedWorker(aGlobal, aScriptURL, name,
getter_AddRefs(sharedWorker));
if (NS_FAILED(rv)) {
aRv = rv;
return nullptr;
}
return sharedWorker.forget();
}
MessagePort*
SharedWorker::Port()
{
AssertIsOnMainThread();
return mMessagePort;
}
void
SharedWorker::Freeze()
{
AssertIsOnMainThread();
MOZ_ASSERT(!IsFrozen());
mFrozen = true;
}
void
SharedWorker::Thaw()
{
AssertIsOnMainThread();
MOZ_ASSERT(IsFrozen());
mFrozen = false;
if (!mFrozenEvents.IsEmpty()) {
nsTArray<nsCOMPtr<nsIDOMEvent>> events;
mFrozenEvents.SwapElements(events);
for (uint32_t index = 0; index < events.Length(); index++) {
nsCOMPtr<nsIDOMEvent>& event = events[index];
MOZ_ASSERT(event);
nsCOMPtr<nsIDOMEventTarget> target;
if (NS_SUCCEEDED(event->GetTarget(getter_AddRefs(target)))) {
bool ignored;
if (NS_FAILED(target->DispatchEvent(event, &ignored))) {
NS_WARNING("Failed to dispatch event!");
}
} else {
NS_WARNING("Failed to get target!");
}
}
}
}
void
SharedWorker::QueueEvent(nsIDOMEvent* aEvent)
{
AssertIsOnMainThread();
MOZ_ASSERT(aEvent);
MOZ_ASSERT(IsFrozen());
mFrozenEvents.AppendElement(aEvent);
}
void
SharedWorker::Close()
{
AssertIsOnMainThread();
if (mMessagePort) {
mMessagePort->Close();
}
}
void
SharedWorker::PostMessage(JSContext* aCx, JS::Handle<JS::Value> aMessage,
const Optional<Sequence<JS::Value>>& aTransferable,
ErrorResult& aRv)
{
AssertIsOnMainThread();
MOZ_ASSERT(mWorkerPrivate);
MOZ_ASSERT(mMessagePort);
mMessagePort->PostMessage(aCx, aMessage, aTransferable, aRv);
}
NS_IMPL_ADDREF_INHERITED(SharedWorker, DOMEventTargetHelper)
NS_IMPL_RELEASE_INHERITED(SharedWorker, DOMEventTargetHelper)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(SharedWorker)
NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
NS_IMPL_CYCLE_COLLECTION_CLASS(SharedWorker)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(SharedWorker,
DOMEventTargetHelper)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mMessagePort)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mFrozenEvents)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(SharedWorker,
DOMEventTargetHelper)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mMessagePort)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mFrozenEvents)
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
JSObject*
SharedWorker::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
AssertIsOnMainThread();
return SharedWorkerBinding::Wrap(aCx, this, aGivenProto);
}
nsresult
SharedWorker::GetEventTargetParent(EventChainPreVisitor& aVisitor)
{
AssertIsOnMainThread();
if (IsFrozen()) {
nsCOMPtr<nsIDOMEvent> event = aVisitor.mDOMEvent;
if (!event) {
event = EventDispatcher::CreateEvent(aVisitor.mEvent->mOriginalTarget,
aVisitor.mPresContext,
aVisitor.mEvent, EmptyString());
}
QueueEvent(event);
aVisitor.mCanHandle = false;
aVisitor.SetParentTarget(nullptr, false);
return NS_OK;
}
return DOMEventTargetHelper::GetEventTargetParent(aVisitor);
}
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