gecko-dev/dom/events/DeviceMotionEvent.cpp

/* -*- 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/DeviceMotionEvent.h"
#include "nsContentUtils.h"

namespace mozilla {
namespace dom {

/******************************************************************************
 * DeviceMotionEvent
 *****************************************************************************/

NS_IMPL_CYCLE_COLLECTION_INHERITED(DeviceMotionEvent, Event,
                                   mAcceleration,
                                   mAccelerationIncludingGravity,
                                   mRotationRate)

NS_IMPL_ADDREF_INHERITED(DeviceMotionEvent, Event)
NS_IMPL_RELEASE_INHERITED(DeviceMotionEvent, Event)

NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(DeviceMotionEvent)
NS_INTERFACE_MAP_END_INHERITING(Event)

void
DeviceMotionEvent::InitDeviceMotionEvent(
                     const nsAString& aType,
                     bool aCanBubble,
                     bool aCancelable,
                     const DeviceAccelerationInit& aAcceleration,
                     const DeviceAccelerationInit& aAccelIncludingGravity,
                     const DeviceRotationRateInit& aRotationRate,
                     Nullable<double> aInterval,
                     ErrorResult& aRv)
{
  aRv = Event::InitEvent(aType, aCanBubble, aCancelable);
  if (aRv.Failed()) {
    return;
  }

  mAcceleration = new DeviceAcceleration(this, aAcceleration.mX,
                                         aAcceleration.mY,
                                         aAcceleration.mZ);

  mAccelerationIncludingGravity =
    new DeviceAcceleration(this, aAccelIncludingGravity.mX,
                           aAccelIncludingGravity.mY,
                           aAccelIncludingGravity.mZ);

  mRotationRate = new DeviceRotationRate(this, aRotationRate.mAlpha,
                                         aRotationRate.mBeta,
                                         aRotationRate.mGamma);
  mInterval = aInterval;
}

already_AddRefed<DeviceMotionEvent>
DeviceMotionEvent::Constructor(const GlobalObject& aGlobal,
                               const nsAString& aType,
                               const DeviceMotionEventInit& aEventInitDict,
                               ErrorResult& aRv)
{
  nsCOMPtr<EventTarget> t = do_QueryInterface(aGlobal.GetAsSupports());
  nsRefPtr<DeviceMotionEvent> e = new DeviceMotionEvent(t, nullptr, nullptr);
  aRv = e->InitEvent(aType, aEventInitDict.mBubbles, aEventInitDict.mCancelable);
  if (aRv.Failed()) {
    return nullptr;
  }
  bool trusted = e->Init(t);

  e->mAcceleration = new DeviceAcceleration(e,
    aEventInitDict.mAcceleration.mX,
    aEventInitDict.mAcceleration.mY,
    aEventInitDict.mAcceleration.mZ);

  e->mAccelerationIncludingGravity = new DeviceAcceleration(e,
    aEventInitDict.mAccelerationIncludingGravity.mX,
    aEventInitDict.mAccelerationIncludingGravity.mY,
    aEventInitDict.mAccelerationIncludingGravity.mZ);

  e->mRotationRate = new DeviceRotationRate(e,
    aEventInitDict.mRotationRate.mAlpha,
    aEventInitDict.mRotationRate.mBeta,
    aEventInitDict.mRotationRate.mGamma);

  e->mInterval = aEventInitDict.mInterval;
  e->SetTrusted(trusted);

  return e.forget();
}

/******************************************************************************
 * DeviceAcceleration
 *****************************************************************************/

NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(DeviceAcceleration, mOwner)

NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(DeviceAcceleration, AddRef)
NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(DeviceAcceleration, Release)

DeviceAcceleration::DeviceAcceleration(DeviceMotionEvent* aOwner,
                                       Nullable<double> aX,
                                       Nullable<double> aY,
                                       Nullable<double> aZ)
  : mOwner(aOwner)
  , mX(aX)
  , mY(aY)
  , mZ(aZ)
{
  SetIsDOMBinding();
}

DeviceAcceleration::~DeviceAcceleration()
{
}

/******************************************************************************
 * DeviceRotationRate
 *****************************************************************************/

NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(DeviceRotationRate, mOwner)

NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(DeviceRotationRate, AddRef)
NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(DeviceRotationRate, Release)

DeviceRotationRate::DeviceRotationRate(DeviceMotionEvent* aOwner,
                                       Nullable<double> aAlpha,
                                       Nullable<double> aBeta,
                                       Nullable<double> aGamma)
  : mOwner(aOwner)
  , mAlpha(aAlpha)
  , mBeta(aBeta)
  , mGamma(aGamma)
{
  SetIsDOMBinding();
}

DeviceRotationRate::~DeviceRotationRate()
{
}

} // namespace dom
} // namespace mozilla

using namespace mozilla;
using namespace mozilla::dom;

nsresult
NS_NewDOMDeviceMotionEvent(nsIDOMEvent** aInstancePtrResult,
                           EventTarget* aOwner,
                           nsPresContext* aPresContext,
                           WidgetEvent* aEvent) 
{
  NS_ENSURE_ARG_POINTER(aInstancePtrResult);

  DeviceMotionEvent* it = new DeviceMotionEvent(aOwner, aPresContext, aEvent);
  NS_ADDREF(it);
  *aInstancePtrResult = static_cast<Event*>(it);
  return NS_OK;
}