1 files changed, 125 insertions, 0 deletions
diff --git a/layout/style/FontFace.h b/layout/style/FontFace.h
new file mode 100644
index 0000000000..a830217f3b
--- /dev/null
+++ b/layout/style/FontFace.h
@@ -0,0 +1,125 @@
+/* -*- 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_dom_FontFace_h
+#define mozilla_dom_FontFace_h
+
+#include "mozilla/dom/FontFaceBinding.h"
+#include "mozilla/FontPropertyTypes.h"
+#include "mozilla/Maybe.h"
+#include "mozilla/ServoStyleConsts.h"
+#include "gfxUserFontSet.h"
+#include "nsCSSPropertyID.h"
+#include "nsCSSValue.h"
+#include "nsWrapperCache.h"
+
+class gfxFontFaceBufferSource;
+struct RawServoFontFaceRule;
+
+namespace mozilla {
+struct CSSFontFaceDescriptors;
+class PostTraversalTask;
+namespace dom {
+class CSSFontFaceRule;
+class FontFaceBufferSource;
+struct FontFaceDescriptors;
+class FontFaceImpl;
+class FontFaceSet;
+class FontFaceSetImpl;
+class Promise;
+class UTF8StringOrArrayBufferOrArrayBufferView;
+}  // namespace dom
+}  // namespace mozilla
+
+namespace mozilla::dom {
+
+class FontFace final : public nsISupports, public nsWrapperCache {
+  friend class mozilla::PostTraversalTask;
+
+ public:
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(FontFace)
+
+  nsIGlobalObject* GetParentObject() const { return mParent; }
+  virtual JSObject* WrapObject(JSContext* aCx,
+                               JS::Handle<JSObject*> aGivenProto) override;
+
+  static already_AddRefed<FontFace> CreateForRule(nsIGlobalObject* aGlobal,
+                                                  FontFaceSet* aFontFaceSet,
+                                                  RawServoFontFaceRule* aRule);
+
+  // Web IDL
+  static already_AddRefed<FontFace> Constructor(
+      const GlobalObject& aGlobal, const nsACString& aFamily,
+      const UTF8StringOrArrayBufferOrArrayBufferView& aSource,
+      const FontFaceDescriptors& aDescriptors, ErrorResult& aRV);
+
+  void GetFamily(nsACString& aResult);
+  void SetFamily(const nsACString& aValue, ErrorResult& aRv);
+  void GetStyle(nsACString& aResult);
+  void SetStyle(const nsACString& aValue, ErrorResult& aRv);
+  void GetWeight(nsACString& aResult);
+  void SetWeight(const nsACString& aValue, ErrorResult& aRv);
+  void GetStretch(nsACString& aResult);
+  void SetStretch(const nsACString& aValue, ErrorResult& aRv);
+  void GetUnicodeRange(nsACString& aResult);
+  void SetUnicodeRange(const nsACString& aValue, ErrorResult& aRv);
+  void GetVariant(nsACString& aResult);
+  void SetVariant(const nsACString& aValue, ErrorResult& aRv);
+  void GetFeatureSettings(nsACString& aResult);
+  void SetFeatureSettings(const nsACString& aValue, ErrorResult& aRv);
+  void GetVariationSettings(nsACString& aResult);
+  void SetVariationSettings(const nsACString& aValue, ErrorResult& aRv);
+  void GetDisplay(nsACString& aResult);
+  void SetDisplay(const nsACString& aValue, ErrorResult& aRv);
+  void GetAscentOverride(nsACString& aResult);
+  void SetAscentOverride(const nsACString& aValue, ErrorResult& aRv);
+  void GetDescentOverride(nsACString& aResult);
+  void SetDescentOverride(const nsACString& aValue, ErrorResult& aRv);
+  void GetLineGapOverride(nsACString& aResult);
+  void SetLineGapOverride(const nsACString& aValue, ErrorResult& aRv);
+  void GetSizeAdjust(nsACString& aResult);
+  void SetSizeAdjust(const nsACString& aValue, ErrorResult& aRv);
+
+  FontFaceLoadStatus Status();
+  Promise* Load(ErrorResult& aRv);
+  Promise* GetLoaded(ErrorResult& aRv);
+
+  FontFaceImpl* GetImpl() const { return mImpl; }
+
+  void Destroy();
+  void MaybeResolve();
+  void MaybeReject(nsresult aResult);
+
+ private:
+  explicit FontFace(nsIGlobalObject* aParent);
+  ~FontFace();
+
+  /**
+   * Returns and takes ownership of the buffer storing the font data.
+   */
+  void TakeBuffer(uint8_t*& aBuffer, uint32_t& aLength);
+
+  // Creates mLoaded if it doesn't already exist. It may immediately resolve or
+  // reject mLoaded based on mStatus and mLoadedRejection.
+  void EnsurePromise();
+
+  nsCOMPtr<nsIGlobalObject> mParent;
+
+  RefPtr<FontFaceImpl> mImpl;
+
+  // A Promise that is fulfilled once the font represented by this FontFace is
+  // loaded, and is rejected if the load fails. This promise is created lazily
+  // when JS asks for it.
+  RefPtr<Promise> mLoaded;
+
+  // Saves the rejection code for mLoaded if mLoaded hasn't been created yet.
+  nsresult mLoadedRejection;
+};
+
+}  // namespace mozilla::dom
+
+#endif  // !defined(mozilla_dom_FontFace_h)