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

/* vim:set ts=2 sw=2 sts=2 et cindent: */

/* 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/EventBinding.h"

#include "mozilla/dom/MIDIMessageEvent.h"

#include "mozilla/dom/MIDIMessageEventBinding.h"

#include "js/GCAPI.h"

#include "jsfriendapi.h"

#include "mozilla/FloatingPoint.h"

#include "mozilla/dom/Nullable.h"

#include "mozilla/dom/PrimitiveConversions.h"

#include "mozilla/dom/TypedArray.h"

#include "mozilla/dom/Performance.h"

namespace mozilla {

namespace dom {

NS_IMPL_CYCLE_COLLECTION_CLASS(MIDIMessageEvent)

NS_IMPL_ADDREF_INHERITED(MIDIMessageEvent, Event)

NS_IMPL_RELEASE_INHERITED(MIDIMessageEvent, Event)

NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(MIDIMessageEvent, Event)

NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END

NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(MIDIMessageEvent, Event)

  NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mData)

NS_IMPL_CYCLE_COLLECTION_TRACE_END

NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(MIDIMessageEvent, Event)

  tmp->mData = nullptr;

NS_IMPL_CYCLE_COLLECTION_UNLINK_END

NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(MIDIMessageEvent)

NS_INTERFACE_MAP_END_INHERITING(Event)

MIDIMessageEvent::MIDIMessageEvent(mozilla::dom::EventTarget* aOwner)

  : Event(aOwner, nullptr, nullptr)

{

  mozilla::HoldJSObjects(this);

}

MIDIMessageEvent::~MIDIMessageEvent()

{

  mData = nullptr;

  mozilla::DropJSObjects(this);

}

JSObject*

MIDIMessageEvent::WrapObjectInternal(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)

{

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

}

MIDIMessageEvent*

MIDIMessageEvent::AsMIDIMessageEvent()

{

  return this;

}

already_AddRefed<MIDIMessageEvent>

MIDIMessageEvent::Constructor(EventTarget* aOwner,

                              const class TimeStamp& aReceivedTime,

                              const nsTArray<uint8_t>& aData)

{

  MOZ_ASSERT(aOwner);

  RefPtr<MIDIMessageEvent> e = new MIDIMessageEvent(aOwner);

  e->InitEvent(NS_LITERAL_STRING("midimessage"), false, false);

  e->mEvent->mTimeStamp = aReceivedTime;

  e->mRawData = aData;

  e->SetTrusted(true);

  return e.forget();

}

already_AddRefed<MIDIMessageEvent>

MIDIMessageEvent::Constructor(const GlobalObject& aGlobal,

                              const nsAString& aType,

                              const MIDIMessageEventInit& aEventInitDict,

                              ErrorResult& aRv)

{

  nsCOMPtr<EventTarget> owner = do_QueryInterface(aGlobal.GetAsSupports());

  RefPtr<MIDIMessageEvent> e = new MIDIMessageEvent(owner);

  bool trusted = e->Init(owner);

  e->InitEvent(aType, aEventInitDict.mBubbles, aEventInitDict.mCancelable);

  // Set data for event. Timestamp will always be set to Now() (default for

  // event) using this constructor.

  const auto& a = aEventInitDict.mData.Value();

  a.ComputeLengthAndData();

  e->mData = Uint8Array::Create(aGlobal.Context(), owner, a.Length(), a.Data());

  if (NS_WARN_IF(!e->mData)) {

    aRv.Throw(NS_ERROR_OUT_OF_MEMORY);

    return nullptr;

  }

  e->SetTrusted(trusted);

  mozilla::HoldJSObjects(e.get());

  return e.forget();

}

void

MIDIMessageEvent::GetData(JSContext* cx,

                          JS::MutableHandle<JSObject*> aData,

                          ErrorResult& aRv)

{

  if (!mData) {

    mData = Uint8Array::Create(cx,

                               this,

                               mRawData.Length(),

                               mRawData.Elements());

    if (!mData) {

      aRv.Throw(NS_ERROR_OUT_OF_MEMORY);

      return;

    }

    mRawData.Clear();

    JS::ExposeObjectToActiveJS(mData);

  }

  aData.set(mData);

}

} // namespace dom

} // namespace mozilla