1 files changed, 101 insertions, 0 deletions
diff --git a/layout/style/nsDOMCSSAttrDeclaration.h b/layout/style/nsDOMCSSAttrDeclaration.h
new file mode 100644
index 0000000000..ebae280bf0
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+++ b/layout/style/nsDOMCSSAttrDeclaration.h
@@ -0,0 +1,101 @@
+/* -*- 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/. */
+
+/* DOM object for element.style */
+
+#ifndef nsDOMCSSAttributeDeclaration_h
+#define nsDOMCSSAttributeDeclaration_h
+
+#include "mozilla/Attributes.h"
+#include "mozilla/dom/DocGroup.h"
+#include "mozilla/ServoTypes.h"
+#include "nsDOMCSSDeclaration.h"
+
+struct RawServoUnlockedDeclarationBlock;
+
+namespace mozilla {
+
+class SMILValue;
+class SVGAnimatedLength;
+class SVGAnimatedPathSegList;
+
+namespace dom {
+class DomGroup;
+class Element;
+}  // namespace dom
+}  // namespace mozilla
+
+class nsDOMCSSAttributeDeclaration final : public nsDOMCSSDeclaration {
+ public:
+  typedef mozilla::dom::Element Element;
+  typedef mozilla::SMILValue SMILValue;
+  typedef mozilla::SVGAnimatedLength SVGAnimatedLength;
+  nsDOMCSSAttributeDeclaration(Element* aContent, bool aIsSMILOverride);
+
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_SKIPPABLE_WRAPPERCACHE_CLASS_AMBIGUOUS(
+      nsDOMCSSAttributeDeclaration, nsICSSDeclaration)
+
+  mozilla::DeclarationBlock* GetOrCreateCSSDeclaration(
+      Operation aOperation, mozilla::DeclarationBlock** aCreated) final;
+
+  nsDOMCSSDeclaration::ParsingEnvironment GetParsingEnvironment(
+      nsIPrincipal* aSubjectPrincipal) const final;
+
+  mozilla::css::Rule* GetParentRule() override { return nullptr; }
+
+  nsINode* GetAssociatedNode() const override { return mElement; }
+  nsINode* GetParentObject() const override { return mElement; }
+
+  nsresult SetSMILValue(const nsCSSPropertyID aPropID, const SMILValue& aValue);
+  nsresult SetSMILValue(const nsCSSPropertyID aPropID,
+                        const SVGAnimatedLength& aLength);
+  nsresult SetSMILValue(const nsCSSPropertyID,
+                        const mozilla::SVGAnimatedPathSegList& aPath);
+  void ClearSMILValue(const nsCSSPropertyID aPropID) {
+    // Put empty string in override style for our property
+    SetPropertyValue(aPropID, ""_ns, nullptr, mozilla::IgnoreErrors());
+  }
+
+  void SetPropertyValue(const nsCSSPropertyID aPropID, const nsACString& aValue,
+                        nsIPrincipal* aSubjectPrincipal,
+                        mozilla::ErrorResult& aRv) override;
+
+  static void MutationClosureFunction(void* aData, nsCSSPropertyID);
+
+  void GetPropertyChangeClosure(
+      mozilla::DeclarationBlockMutationClosure* aClosure,
+      mozilla::MutationClosureData* aClosureData) final {
+    if (!mIsSMILOverride) {
+      aClosure->function = MutationClosureFunction;
+      aClosure->data = aClosureData;
+      aClosureData->mShouldBeCalled = true;
+      aClosureData->mElement = mElement;
+    }
+  }
+
+ protected:
+  ~nsDOMCSSAttributeDeclaration();
+
+  nsresult SetCSSDeclaration(
+      mozilla::DeclarationBlock* aDecl,
+      mozilla::MutationClosureData* aClosureData) override;
+  mozilla::dom::Document* DocToUpdate() override;
+
+  RefPtr<Element> mElement;
+
+  /* If true, this indicates that this nsDOMCSSAttributeDeclaration
+   * should interact with mContent's SMIL override style rule (rather
+   * than the inline style rule).
+   */
+  const bool mIsSMILOverride;
+
+ private:
+  template <typename SetterFunc>
+  nsresult SetSMILValueHelper(SetterFunc aFunc);
+};
+
+#endif /* nsDOMCSSAttributeDeclaration_h */