[WIP] Implement :dir()

third_party/WebKit/Source/core/css/resolver/StyleResolver.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
@@ skipping 601 matching lines @@
 
     // Now check author rules, beginning first with presentational attributes mapped from HTML.
     if (state.element()->isStyledElement()) {
         collector.addElementStyleProperties(state.element()->presentationAttributeStyle());
 
         // Now we check additional mapped declarations.
         // Tables and table cells share an additional mapped rule that must be applied
         // after all attributes, since their mapped style depends on the values of multiple attributes.
         collector.addElementStyleProperties(state.element()->additionalPresentationAttributeStyle());
 
-        if (state.element()->isHTMLElement()) {
-            bool isAuto;
-            TextDirection textDirection = toHTMLElement(state.element())->directionalityIfhasDirAutoAttribute(isAuto);
-            if (isAuto) {
-                state.setHasDirAutoAttribute(true);
-                collector.addElementStyleProperties(textDirection == LTR ? leftToRightDeclaration() : rightToLeftDeclaration());
-            }
+        if (state.element()->isHTMLElement() && toHTMLElement(state.element())->hasDirectionAuto()) {
+            state.setHasDirAutoAttribute(true);
+            collector.addElementStyleProperties(state.element()->directionality() == LTR ? leftToRightDeclaration() : rightToLeftDeclaration());
         }
     }
 
     matchAuthorRules(*state.element(), collector);
 
     if (state.element()->isStyledElement()) {
         // For Shadow DOM V1, inline style is already collected in matchScopedRules().
         if (document().shadowCascadeOrder() != ShadowCascadeOrder::ShadowCascadeV1 && state.element()->inlineStyle()) {
             // Inline style is immutable as long as there is no CSSOM wrapper.
             bool isInlineStyleCacheable = !state.element()->inlineStyle()->isMutable();
@@ skipping 1095 matching lines @@
     visitor->trace(m_siblingRuleSet);
     visitor->trace(m_uncommonAttributeRuleSet);
     visitor->trace(m_watchedSelectorsRules);
     visitor->trace(m_treeBoundaryCrossingScopes);
     visitor->trace(m_styleSharingLists);
     visitor->trace(m_pendingStyleSheets);
     visitor->trace(m_document);
 }
 
 } // namespace blink