1 files changed, 58 insertions, 0 deletions
diff --git a/dom/animation/AnimValuesStyleRule.h b/dom/animation/AnimValuesStyleRule.h
new file mode 100644
index 000000000..3562014b9
--- /dev/null
+++ b/dom/animation/AnimValuesStyleRule.h
@@ -0,0 +1,58 @@
+/* -*- 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_AnimValuesStyleRule_h
+#define mozilla_AnimValuesStyleRule_h
+
+#include "mozilla/StyleAnimationValue.h"
+#include "nsCSSPropertyID.h"
+#include "nsCSSPropertyIDSet.h"
+#include "nsDataHashtable.h"
+#include "nsHashKeys.h" // For nsUint32HashKey
+#include "nsIStyleRule.h"
+#include "nsISupportsImpl.h" // For NS_DECL_ISUPPORTS
+#include "nsRuleNode.h" // For nsCachedStyleData
+#include "nsTArray.h" // For nsTArray
+
+namespace mozilla {
+
+/**
+ * A style rule that maps property-StyleAnimationValue pairs.
+ */
+class AnimValuesStyleRule final : public nsIStyleRule
+{
+public:
+  AnimValuesStyleRule()
+    : mStyleBits(0) {}
+
+  // nsISupports implementation
+  NS_DECL_ISUPPORTS
+
+  // nsIStyleRule implementation
+  void MapRuleInfoInto(nsRuleData* aRuleData) override;
+  bool MightMapInheritedStyleData() override;
+  bool GetDiscretelyAnimatedCSSValue(nsCSSPropertyID aProperty,
+                                     nsCSSValue* aValue) override;
+#ifdef DEBUG
+  void List(FILE* out = stdout, int32_t aIndent = 0) const override;
+#endif
+
+  // For the following functions, it there is already a value for |aProperty| it
+  // will be replaced with |aValue|.
+  void AddValue(nsCSSPropertyID aProperty, const StyleAnimationValue &aValue);
+  void AddValue(nsCSSPropertyID aProperty, StyleAnimationValue&& aValue);
+
+private:
+  ~AnimValuesStyleRule() {}
+
+  nsDataHashtable<nsUint32HashKey, StyleAnimationValue> mAnimationValues;
+
+  uint32_t mStyleBits;
+};
+
+} // namespace mozilla
+
+#endif // mozilla_AnimValuesStyleRule_h