Bug 1408311 - Part 2: Add GetDeclarationBlock method to BindingStyleRule. r=xidorn

MozReview-Commit-ID: 5adkbeTOHQU

--HG--
extra : rebase_source : 67d196ac36b5f6daca8e20f6ec6063b3f2f8c84d

layout/style/BindingStyleRule.h

@@ -9,6 +9,7 @@
 #include "nscore.h"
 #include "nsStringGlue.h"
 #include "mozilla/css/Rule.h"
+#include "mozilla/NotNull.h"
 
 /**
  * Shared superclass for mozilla::css::StyleRule and mozilla::ServoStyleRule,
@@ -18,6 +19,7 @@
 class nsICSSDeclaration;
 
 namespace mozilla {
+class DeclarationBlock;
 namespace dom {
 class Element;
 }
@@ -54,6 +56,7 @@ public:
                                           uint32_t aSelectorIndex,
                                           const nsAString& aPseudo,
                                           bool* aMatches) = 0;
+  virtual NotNull<DeclarationBlock*> GetDeclarationBlock() const = 0;
 
   // WebIDL API
   // For GetSelectorText/SetSelectorText, we purposefully use a signature that

layout/style/ServoStyleRule.cpp

@@ -298,4 +298,10 @@ ServoStyleRule::SelectorMatchesElement(Element* aElement,
   return NS_OK;
 }
 
+NotNull<DeclarationBlock*>
+ServoStyleRule::GetDeclarationBlock() const
+{
+  return WrapNotNull(mDecls.mDecls);
+}
+
 } // namespace mozilla

layout/style/ServoStyleRule.h

@@ -80,6 +80,7 @@ public:
                                   uint32_t aSelectorIndex,
                                   const nsAString& aPseudo,
                                   bool* aMatches) override;
+  NotNull<DeclarationBlock*> GetDeclarationBlock() const override;
 
   // WebIDL interface
   uint16_t Type() const final;

layout/style/StyleRule.cpp

@@ -1513,5 +1513,11 @@ StyleRule::SelectorMatchesElement(Element* aElement,
   return NS_OK;
 }
 
+NotNull<DeclarationBlock*>
+StyleRule::GetDeclarationBlock() const
+{
+  return WrapNotNull(mDeclaration);
+}
+
 } // namespace css
 } // namespace mozilla

layout/style/StyleRule.h

@@ -347,6 +347,7 @@ public:
                                   uint32_t aSelectorIndex,
                                   const nsAString& aPseudo,
                                   bool* aMatches) override;
+  mozilla::NotNull<DeclarationBlock*> GetDeclarationBlock() const override;
 
   // WebIDL interface
   uint16_t Type() const override;