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/* -*- 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/. */
#ifndef mozilla_dom_workers_sharedworker_h__
#define mozilla_dom_workers_sharedworker_h__
#include "mozilla/dom/WorkerCommon.h"
#include "mozilla/dom/BindingDeclarations.h"
#include "mozilla/DOMEventTargetHelper.h"
#ifdef XP_WIN
# undef PostMessage
#endif
class nsPIDOMWindowInner;
namespace mozilla {
class EventChainPreVisitor;
namespace dom {
class MessagePort;
class StringOrWorkerOptions;
class Event;
class SharedWorkerChild;
/**
* DOM binding. Holds a SharedWorkerChild. Must exist on the main thread because
* we only allow top-level windows to create SharedWorkers.
*/
class SharedWorker final : public DOMEventTargetHelper {
using ErrorResult = mozilla::ErrorResult;
using GlobalObject = mozilla::dom::GlobalObject;
RefPtr<nsPIDOMWindowInner> mWindow;
RefPtr<SharedWorkerChild> mActor;
RefPtr<MessagePort> mMessagePort;
nsTArray<RefPtr<Event>> mFrozenEvents;
bool mFrozen;
public:
static already_AddRefed<SharedWorker> Constructor(
const GlobalObject& aGlobal, const nsAString& aScriptURL,
const StringOrWorkerOptions& aOptions, ErrorResult& aRv);
MessagePort* Port();
bool IsFrozen() const { return mFrozen; }
void QueueEvent(Event* aEvent);
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(SharedWorker, DOMEventTargetHelper)
IMPL_EVENT_HANDLER(error)
virtual JSObject* WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) override;
void GetEventTargetParent(EventChainPreVisitor& aVisitor) override;
void ErrorPropagation(nsresult aError);
// Methods called from the window.
void Close();
void Suspend();
void Resume();
void Freeze();
void Thaw();
private:
SharedWorker(nsPIDOMWindowInner* aWindow, SharedWorkerChild* aActor,
MessagePort* aMessagePort);
// This class is reference-counted and will be destroyed from Release().
~SharedWorker();
// Only called by MessagePort.
void PostMessage(JSContext* aCx, JS::Handle<JS::Value> aMessage,
const Sequence<JSObject*>& aTransferable, ErrorResult& aRv);
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_workers_sharedworker_h__
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