Skeleton implementation of CSS Properties and Values API

third_party/WebKit/Source/core/css/ComputedStyleCSSValueMapping.cpp

 /*
  * Copyright (C) 2004 Zack Rusin <zack@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  * Copyright (C) 2011 Sencha, Inc. All rights reserved.
  * Copyright (C) 2015 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ skipping 35 matching lines @@
 #include "core/css/CSSPrimitiveValue.h"
 #include "core/css/CSSPrimitiveValueMappings.h"
 #include "core/css/CSSQuadValue.h"
 #include "core/css/CSSReflectValue.h"
 #include "core/css/CSSShadowValue.h"
 #include "core/css/CSSStringValue.h"
 #include "core/css/CSSTimingFunctionValue.h"
 #include "core/css/CSSURIValue.h"
 #include "core/css/CSSValueList.h"
 #include "core/css/CSSValuePair.h"
+#include "core/css/PropertyRegistry.h"
 #include "core/layout/LayoutBlock.h"
 #include "core/layout/LayoutBox.h"
 #include "core/layout/LayoutGrid.h"
 #include "core/layout/LayoutObject.h"
 #include "core/style/ComputedStyle.h"
 #include "core/style/ContentData.h"
 #include "core/style/CursorData.h"
 #include "core/style/QuotesData.h"
 #include "core/style/ShadowList.h"
 #include "core/style/StyleVariableData.h"
@@ skipping 1560 matching lines @@
         return BreakAuto;
     case BreakColumn:
         return BreakAlways;
     case BreakAvoidColumn:
         return BreakAvoid;
     default:
         return genericBreakValue;
     }
 }
 
-const CSSValue* ComputedStyleCSSValueMapping::get(const AtomicString customPropertyName, const ComputedStyle& style)
+const CSSValue* ComputedStyleCSSValueMapping::get(const AtomicString customPropertyName, const ComputedStyle& style, const PropertyRegistry* registry)
 {
     StyleVariableData* variables = style.variables();
+    if (const PropertyRegistry::Registration* registration = registry->registration(customPropertyName)) {
+        if (variables) {
+            const CSSValue* result = variables->registeredInheritedProperty(customPropertyName);
+            if (result)
+                return result;
+        }
+        return registration->initial();
+    }
+
     if (!variables)
         return nullptr;
 
     CSSVariableData* data = variables->getVariable(customPropertyName);
     if (!data)
         return nullptr;
 
     return CSSCustomPropertyDeclaration::create(customPropertyName, data);
 }
 
@@ skipping 1358 matching lines @@
     case CSSPropertyAll:
         return nullptr;
     default:
         break;
     }
     ASSERT_NOT_REACHED();
     return nullptr;
 }
 
 } // namespace blink