/* -*- 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_CSSFontFaceRule_h

#define mozilla_CSSFontFaceRule_h

#include "mozilla/ServoBindingTypes.h"

#include "mozilla/css/Rule.h"

#include "nsICSSDeclaration.h"

namespace mozilla {

namespace dom {

// A CSSFontFaceRuleDecl is always embeded in a CSSFontFaceRule.

class CSSFontFaceRule;

class CSSFontFaceRuleDecl final : public nsICSSDeclaration

{

public:

  NS_DECL_ISUPPORTS_INHERITED

  NS_DECL_NSIDOMCSSSTYLEDECLARATION_HELPER

  nsINode* GetParentObject() final;

  void IndexedGetter(uint32_t aIndex, bool& aFound, nsAString& aPropName) final;

  void GetPropertyValue(nsCSSFontDesc aFontDescID, nsAString& aResult) const;

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

protected:

  // For accessing the constructor.

  friend class CSSFontFaceRule;

  explicit CSSFontFaceRuleDecl(already_AddRefed<RawServoFontFaceRule> aDecl)

    : mRawRule(std::move(aDecl)) {}

  ~CSSFontFaceRuleDecl() = default;

  inline CSSFontFaceRule* ContainingRule();

  inline const CSSFontFaceRule* ContainingRule() const;

  RefPtr<RawServoFontFaceRule> mRawRule;

private:

  void* operator new(size_t size) CPP_THROW_NEW = delete;

};

class CSSFontFaceRule final : public css::Rule

{

public:

  CSSFontFaceRule(already_AddRefed<RawServoFontFaceRule> aRawRule,

                  StyleSheet* aSheet,

                  css::Rule* aParentRule,

                  uint32_t aLine,

                  uint32_t aColumn)

    : css::Rule(aSheet, aParentRule, aLine, aColumn)

    , mDecl(std::move(aRawRule))

  {}

  CSSFontFaceRule(const CSSFontFaceRule&) = delete;

  NS_DECL_ISUPPORTS_INHERITED

  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(

      CSSFontFaceRule, css::Rule)

  bool IsCCLeaf() const final;

  RawServoFontFaceRule* Raw() const { return mDecl.mRawRule; }

  // WebIDL interface

  uint16_t Type() const final;

  void GetCssText(nsAString& aCssText) const final;

  nsICSSDeclaration* Style();

  // Methods of mozilla::css::Rule

  size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf)

    const final;

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

#ifdef DEBUG

  void List(FILE* out = stdout, int32_t aIndent = 0) const final;

#endif

private:

  virtual ~CSSFontFaceRule() = default;

  // For computing the offset of mDecl.

  friend class CSSFontFaceRuleDecl;

  CSSFontFaceRuleDecl mDecl;

};

inline CSSFontFaceRule*

CSSFontFaceRuleDecl::ContainingRule()

{

  return reinterpret_cast<CSSFontFaceRule*>

    (reinterpret_cast<char*>(this) - offsetof(CSSFontFaceRule, mDecl));

}

inline const CSSFontFaceRule*

CSSFontFaceRuleDecl::ContainingRule() const

{

  return reinterpret_cast<const CSSFontFaceRule*>

    (reinterpret_cast<const char*>(this) - offsetof(CSSFontFaceRule, mDecl));

}

} // namespace dom

} // namespace mozilla

#endif // mozilla_CSSFontFaceRule_h