/* -*- 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_MessageBroadcaster_h

#define mozilla_dom_MessageBroadcaster_h

#include "mozilla/dom/MessageListenerManager.h"

namespace mozilla {

namespace dom {

/**

 * Implementation for the WebIDL MessageBroadcaster interface. Base class for window and

 * process broadcaster message managers.

 */

class MessageBroadcaster : public MessageListenerManager

{

public:

  static MessageBroadcaster* From(MessageListenerManager* aManager)

  {

    if (aManager->IsBroadcaster()) {

      return static_cast<MessageBroadcaster*>(aManager);

    }

    return nullptr;

  }

  void BroadcastAsyncMessage(JSContext* aCx, const nsAString& aMessageName,

                             JS::Handle<JS::Value> aObj,

                             JS::Handle<JSObject*> aObjects,

                             mozilla::ErrorResult& aError)

  {

    DispatchAsyncMessage(aCx, aMessageName, aObj, aObjects, nullptr,

                         JS::UndefinedHandleValue, aError);

  }

  uint32_t ChildCount()

  {

    return mChildManagers.Length();

  }

  MessageListenerManager* GetChildAt(uint32_t aIndex)

  {

    return mChildManagers.SafeElementAt(aIndex);

  }

  void ReleaseCachedProcesses();

  void AddChildManager(MessageListenerManager* aManager);

  void RemoveChildManager(MessageListenerManager* aManager);

protected:

  MessageBroadcaster(MessageBroadcaster* aParentManager, MessageManagerFlags aFlags);

};

} // namespace dom

} // namespace mozilla

#endif // mozilla_dom_MessageBroadcaster_h