DOMPoint.h - mozsearch

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/* -*- 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/. */

#ifndef MOZILLA_DOMPOINT_H_

#define MOZILLA_DOMPOINT_H_

#include "js/TypeDecls.h"

#include "mozilla/AlreadyAddRefed.h"

#include "mozilla/Assertions.h"

#include "nsCOMPtr.h"

#include "nsCycleCollectionParticipant.h"

#include "nsISupports.h"

#include "nsWrapperCache.h"

class JSObject;

class nsIGlobalObject;

struct JSContext;

struct JSStructuredCloneReader;

struct JSStructuredCloneWriter;

namespace mozilla {

class ErrorResult;

namespace dom {

class GlobalObject;

class DOMPoint;

struct DOMPointInit;

struct DOMMatrixInit;

class DOMPointReadOnly : public nsWrapperCache {

 public:

  explicit DOMPointReadOnly(nsISupports* aParent, double aX = 0.0,

                            double aY = 0.0, double aZ = 0.0, double aW = 1.0)

      : mParent(aParent), mX(aX), mY(aY), mZ(aZ), mW(aW) {}

  static already_AddRefed<DOMPointReadOnly> FromPoint(

      const GlobalObject& aGlobal, const DOMPointInit& aParams);

  static already_AddRefed<DOMPointReadOnly> Constructor(

      const GlobalObject& aGlobal, double aX, double aY, double aZ, double aW);

  NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(DOMPointReadOnly)

  NS_DECL_CYCLE_COLLECTION_NATIVE_WRAPPERCACHE_CLASS(DOMPointReadOnly)

  double X() const { return mX; }

  double Y() const { return mY; }

  double Z() const { return mZ; }

  double W() const { return mW; }

  already_AddRefed<DOMPoint> MatrixTransform(const DOMMatrixInit& aInit,

                                             ErrorResult& aRv);

  nsISupports* GetParentObject() const { return mParent; }

  virtual JSObject* WrapObject(JSContext* aCx,

                               JS::Handle<JSObject*> aGivenProto) override;

  bool WriteStructuredClone(JSContext* aCx,

                            JSStructuredCloneWriter* aWriter) const;

  static already_AddRefed<DOMPointReadOnly> ReadStructuredClone(

      JSContext* aCx, nsIGlobalObject* aGlobal,

      JSStructuredCloneReader* aReader);

 protected:

  virtual ~DOMPointReadOnly() = default;

  // Shared implementation of ReadStructuredClone for DOMPoint and

  // DOMPointReadOnly.

  bool ReadStructuredClone(JSStructuredCloneReader* aReader);

  nsCOMPtr<nsISupports> mParent;

  double mX, mY, mZ, mW;

};

class DOMPoint final : public DOMPointReadOnly {

 public:

  explicit DOMPoint(nsISupports* aParent, double aX = 0.0, double aY = 0.0,

                    double aZ = 0.0, double aW = 1.0)

      : DOMPointReadOnly(aParent, aX, aY, aZ, aW) {}

  static already_AddRefed<DOMPoint> FromPoint(const GlobalObject& aGlobal,

                                              const DOMPointInit& aParams);

  static already_AddRefed<DOMPoint> Constructor(const GlobalObject& aGlobal,

                                                double aX, double aY, double aZ,

                                                double aW);

  virtual JSObject* WrapObject(JSContext* aCx,

                               JS::Handle<JSObject*> aGivenProto) override;

  static already_AddRefed<DOMPoint> ReadStructuredClone(

      JSContext* aCx, nsIGlobalObject* aGlobal,

      JSStructuredCloneReader* aReader);

  using DOMPointReadOnly::ReadStructuredClone;

  void SetX(double aX) { mX = aX; }

  void SetY(double aY) { mY = aY; }

  void SetZ(double aZ) { mZ = aZ; }

  void SetW(double aW) { mW = aW; }

};

}  // namespace dom

}  // namespace mozilla

#endif /*MOZILLA_DOMPOINT_H_*/