/* -*- 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/. */

#include "mozilla/dom/GamepadHapticActuator.h"

#include "mozilla/dom/GamepadManager.h"

#include "mozilla/dom/Promise.h"

namespace mozilla {

namespace dom {

NS_IMPL_CYCLE_COLLECTING_ADDREF(GamepadHapticActuator)

NS_IMPL_CYCLE_COLLECTING_RELEASE(GamepadHapticActuator)

NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(GamepadHapticActuator)

  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY

  NS_INTERFACE_MAP_ENTRY(nsISupports)

NS_INTERFACE_MAP_END

NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(GamepadHapticActuator, mParent)

GamepadHapticActuator::GamepadHapticActuator(nsISupports* aParent, uint32_t aGamepadId,

                                             uint32_t aIndex)

  : mParent(aParent), mGamepadId(aGamepadId),

    mType(GamepadHapticActuatorType::Vibration), mIndex(aIndex)

{

}

/* virtual */ JSObject*

GamepadHapticActuator::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)

{

  return GamepadHapticActuator_Binding::Wrap(aCx, this, aGivenProto);

}

nsISupports*

GamepadHapticActuator::GetParentObject() const

{

  return mParent;

}

#define CLAMP(f, min, max) \

          (((f) < min)? min : (((f) > max) ? max : (f)))

already_AddRefed<Promise>

GamepadHapticActuator::Pulse(double aValue, double aDuration, ErrorResult& aRv)

{

  nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(GetParentObject());

  MOZ_ASSERT(global);

  RefPtr<GamepadManager> gamepadManager(GamepadManager::GetService());

  MOZ_ASSERT(gamepadManager);

  // Clamp intensity aValue to be 0~1.

  double value = CLAMP(aValue, 0, 1);

  // aDuration should be always positive.

  double duration = CLAMP(aDuration, 0, aDuration);

  switch (mType) {

    case GamepadHapticActuatorType::Vibration:

    {

      RefPtr<Promise> promise =

        gamepadManager->VibrateHaptic(

          mGamepadId, mIndex, value, duration, global, aRv);

      if (!promise) {

        return nullptr;

      }

      return promise.forget();

    }

    default:

    {

      // We need to implement other types of haptic

      MOZ_ASSERT(false);

      return nullptr;

    }

  }

}

GamepadHapticActuatorType

GamepadHapticActuator::Type() const

{

  return mType;

}

void

GamepadHapticActuator::Set(const GamepadHapticActuator* aOther) {

  mGamepadId = aOther->mGamepadId;

  mType = aOther->mType;

  mIndex = aOther->mIndex;

}

} // namespace dom

} // namespace mozilla