Implementation of CSS3 nav-up/down/left/right properties from CSS3 UI.

Source/core/css/resolver/StyleResolver.h

Index: Source/core/css/resolver/StyleResolver.h
diff --git a/Source/core/css/resolver/StyleResolver.h b/Source/core/css/resolver/StyleResolver.h
index a8013e7efbe603eac3860a97ff785be4b3f0eeb7..9d4135164fca5f37eff59ad1e821d6f4d0ce64de 100644
--- a/Source/core/css/resolver/StyleResolver.h
+++ b/Source/core/css/resolver/StyleResolver.h
@@ -1,6 +1,7 @@
 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
+ * Copyright (C) 2013 Opera Software ASA. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ -401,6 +402,9 @@ private:
     bool classNamesAffectedByRules(const SpaceSplitString&) const;
     bool sharingCandidateHasIdenticalStyleAffectingAttributes(StyledElement*) const;
 
+    typedef void (RenderStyle::*NavDirSetter)(StyleNavigationValue);
+    static NavDirSetter getNavDirSetterForProperty(CSSPropertyID);

[esprehn, 2013/06/20 19:45:10]

I'm not a fan of this pattern. Why do you need to return a function pointer like
this?

The naming of this method is also wrong. setterForNavigationDirection() matches
the convention.

[Krzysztof Olczyk, 2013/07/22 14:14:16]

Done.

+
     unsigned m_matchedPropertiesCacheAdditionsSinceLastSweep;
 
     typedef HashMap<unsigned, MatchedPropertiesCacheItem> MatchedPropertiesCache;