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

/* vim:set ts=2 sw=2 et tw=78: */

/* 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_ImageData_h

#define mozilla_dom_ImageData_h

#include "mozilla/Attributes.h"

#include "mozilla/dom/BindingUtils.h"

#include "mozilla/dom/TypedArray.h"

#include <stdint.h>

#include "nsCycleCollectionParticipant.h"

#include "nsISupportsImpl.h"

#include "js/RootingAPI.h"

namespace mozilla {

namespace dom {

class ImageData final : public nsISupports

{

  ~ImageData()

  {

    DropData();

  }

public:

  ImageData(uint32_t aWidth, uint32_t aHeight, JSObject& aData)

    : mWidth(aWidth)

    , mHeight(aHeight)

    , mData(&aData)

  {

    HoldData();

  }

  NS_DECL_CYCLE_COLLECTING_ISUPPORTS

  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(ImageData)

  static already_AddRefed<ImageData>

    Constructor(const GlobalObject& aGlobal,

                const uint32_t aWidth,

                const uint32_t aHeight,

                ErrorResult& aRv);

  static already_AddRefed<ImageData>

    Constructor(const GlobalObject& aGlobal,

                const Uint8ClampedArray& aData,

                const uint32_t aWidth,

                const Optional<uint32_t>& aHeight,

                ErrorResult& aRv);

  uint32_t Width() const

  {

    return mWidth;

  }

  uint32_t Height() const

  {

    return mHeight;

  }

  void GetData(JSContext* cx, JS::MutableHandle<JSObject*> aData) const

  {

    aData.set(GetDataObject());

  }

  JSObject* GetDataObject() const

  {

    return mData;

  }

  bool WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto, JS::MutableHandle<JSObject*> aReflector);

private:

  void HoldData();

  void DropData();

  ImageData() = delete;

  uint32_t mWidth, mHeight;

  JS::Heap<JSObject*> mData;

};

} // namespace dom

} // namespace mozilla

#endif // mozilla_dom_ImageData_h