/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set sw=2 ts=8 et 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_net_NeckoTargetHolder_h

#define mozilla_net_NeckoTargetHolder_h

#include "nsIEventTarget.h"

#include "nsThreadUtils.h"

namespace mozilla {

namespace net {

// A helper class that implements GetNeckoTarget(). Basically, all e10s child

// channels should inherit this class in order to get a labeled event target.

class NeckoTargetHolder

{

public:

  explicit NeckoTargetHolder(nsIEventTarget *aNeckoTarget)

    : mNeckoTarget(aNeckoTarget)

  {}

protected:

  virtual ~NeckoTargetHolder() = default;

  // Get event target for processing network events.

  virtual already_AddRefed<nsIEventTarget> GetNeckoTarget();

  // When |mNeckoTarget| is not null, use it to dispatch the runnable.

  // Otherwise, dispatch the runnable to the main thread.

  nsresult Dispatch(already_AddRefed<nsIRunnable>&& aRunnable,

                    uint32_t aDispatchFlags = NS_DISPATCH_NORMAL);

  // EventTarget for labeling networking events.

  nsCOMPtr<nsIEventTarget> mNeckoTarget;

};

} // namespace net

} // namespace mozilla

#endif