1 files changed, 70 insertions, 0 deletions
diff --git a/layout/style/BindingStyleRule.h b/layout/style/BindingStyleRule.h
new file mode 100644
index 0000000000..9de9510f58
--- /dev/null
+++ b/layout/style/BindingStyleRule.h
@@ -0,0 +1,70 @@
+/* -*- 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_BindingStyleRule_h__
+#define mozilla_BindingStyleRule_h__
+
+#include "nscore.h"
+#include "nsString.h"
+#include "mozilla/css/Rule.h"
+#include "mozilla/NotNull.h"
+
+/**
+ * Shared superclass for mozilla::css::StyleRule and mozilla::ServoStyleRule,
+ * for use from bindings code.
+ */
+
+class nsICSSDeclaration;
+
+namespace mozilla {
+class DeclarationBlock;
+namespace dom {
+class Element;
+}
+
+class BindingStyleRule : public css::Rule {
+ protected:
+  BindingStyleRule(StyleSheet* aSheet, css::Rule* aParentRule,
+                   uint32_t aLineNumber, uint32_t aColumnNumber)
+      : css::Rule(aSheet, aParentRule, aLineNumber, aColumnNumber) {}
+  BindingStyleRule(const BindingStyleRule& aCopy) = default;
+  virtual ~BindingStyleRule() = default;
+
+ public:
+  // This is pure virtual because we have no members, and are an abstract class
+  // to start with.  The fact that we have to have this declaration at all is
+  // kinda dumb.  :(
+  virtual size_t SizeOfIncludingThis(
+      mozilla::MallocSizeOf aMallocSizeOf) const override MOZ_MUST_OVERRIDE = 0;
+
+  // Likewise for this one.  We have to override our superclass, but don't
+  // really need to do anything in this method.
+  virtual bool IsCCLeaf() const override MOZ_MUST_OVERRIDE = 0;
+
+  virtual uint32_t GetSelectorCount() = 0;
+  virtual nsresult GetSelectorText(uint32_t aSelectorIndex,
+                                   nsACString& aText) = 0;
+  virtual nsresult GetSpecificity(uint32_t aSelectorIndex,
+                                  uint64_t* aSpecificity) = 0;
+  virtual nsresult SelectorMatchesElement(dom::Element* aElement,
+                                          uint32_t aSelectorIndex,
+                                          const nsAString& aPseudo,
+                                          bool aRelevantLinkVisited,
+                                          bool* aMatches) = 0;
+  virtual NotNull<DeclarationBlock*> GetDeclarationBlock() const = 0;
+
+  // WebIDL API
+  virtual void GetSelectorText(nsACString& aSelectorText) = 0;
+  virtual void SetSelectorText(const nsACString& aSelectorText) = 0;
+  virtual nsICSSDeclaration* Style() = 0;
+
+  virtual JSObject* WrapObject(JSContext* aCx,
+                               JS::Handle<JSObject*> aGivenProto) override;
+};
+
+}  // namespace mozilla
+
+#endif  // mozilla_BindingStyleRule_h__