1 files changed, 104 insertions, 0 deletions
diff --git a/layout/style/CSSFontFaceRule.h b/layout/style/CSSFontFaceRule.h
new file mode 100644
index 0000000000..b29249b8a3
--- /dev/null
+++ b/layout/style/CSSFontFaceRule.h
@@ -0,0 +1,104 @@
+/* -*- 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