CSSFontFaceRule.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_CSSFontFaceRule_h

#define mozilla_CSSFontFaceRule_h

#include "mozilla/ServoBindingTypes.h"

#include "mozilla/css/Rule.h"

#include "nsICSSDeclaration.h"

namespace mozilla::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* GetAssociatedNode() const final;

  nsISupports* GetParentObject() const final;

  void IndexedGetter(uint32_t aIndex, bool& aFound,

                     nsACString& aPropName) final;

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

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

 protected:

  // For accessing the constructor.

  friend class CSSFontFaceRule;

  explicit CSSFontFaceRuleDecl(already_AddRefed<StyleLockedFontFaceRule> aDecl)

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

  ~CSSFontFaceRuleDecl() = default;

  inline CSSFontFaceRule* ContainingRule();

  inline const CSSFontFaceRule* ContainingRule() const;

  RefPtr<StyleLockedFontFaceRule> mRawRule;

  void SetRawAfterClone(RefPtr<StyleLockedFontFaceRule>);

 private:

  void* operator new(size_t size) noexcept(true) = delete;

};

class CSSFontFaceRule final : public css::Rule {

 public:

  CSSFontFaceRule(already_AddRefed<StyleLockedFontFaceRule> 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;

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

  void SetRawAfterClone(RefPtr<StyleLockedFontFaceRule>);

  // WebIDL interface

  StyleCssRuleType Type() const final;

  void GetCssText(nsACString& 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 mozilla::dom

#endif  // mozilla_CSSFontFaceRule_h