/* -*- 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 "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 WorkerPrivate;

class Event;

namespace workerinternals {

class RuntimeService;

}

class SharedWorker final : public DOMEventTargetHelper

{

  friend class workerinternals::RuntimeService;

  typedef mozilla::ErrorResult ErrorResult;

  typedef mozilla::dom::GlobalObject GlobalObject;

  RefPtr<WorkerPrivate> mWorkerPrivate;

  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

  Freeze();

  void

  Thaw();

  void

  QueueEvent(Event* aEvent);

  void

  Close();

  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;

  WorkerPrivate*

  GetWorkerPrivate() const

  {

    return mWorkerPrivate;

  }

private:

  // This class can only be created from the RuntimeService.

  SharedWorker(nsPIDOMWindowInner* aWindow,

               WorkerPrivate* aWorkerPrivate,

               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);

};

} // dom namespace

} // mozilla namespace

#endif // mozilla_dom_workers_sharedworker_h__