Implement CSS: scroll-boundary-behavior

third_party/WebKit/Source/core/css/CSSPrimitiveValueMappings.h

 /*
  * Copyright (C) 2007 Alexey Proskuryakov <ap@nypop.com>.
  * Copyright (C) 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  * Copyright (C) 2009 Jeff Schiller <codedread@gmail.com>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ skipping 3446 matching lines @@
     case CSSValueSmooth:
       return ScrollBehaviorSmooth;
     default:
       break;
   }
   ASSERT_NOT_REACHED();
   return ScrollBehaviorAuto;
 }
 
 template <>
+inline CSSIdentifierValue::CSSIdentifierValue(
+    ScrollBoundaryBehavior boundaryBehavior)
+    : CSSValue(IdentifierClass) {
+  switch (boundaryBehavior) {
+    case ScrollBoundaryBehaviorPropagate:
+      m_valueID = CSSValuePropagate;
+      break;
+    case ScrollBoundaryBehaviorContain:
+      m_valueID = CSSValueContain;
+      break;
+    case ScrollBoundaryBehaviorNone:
+      m_valueID = CSSValueNone;
+      break;
+  }
+}
+
+template <>
+inline ScrollBoundaryBehavior CSSIdentifierValue::convertTo() const {
+  switch (getValueID()) {
+    case CSSValuePropagate:
+      return ScrollBoundaryBehaviorPropagate;
+    case CSSValueContain:
+      return ScrollBoundaryBehaviorContain;
+    case CSSValueNone:
+      return ScrollBoundaryBehaviorNone;
+    default:
+      break;
+  }
+  NOT_REACHED();
+  return ScrollBoundaryBehaviorPropagate;
+}
+
+template <>
 inline CSSIdentifierValue::CSSIdentifierValue(ScrollSnapType snapType)
     : CSSValue(IdentifierClass) {
   switch (snapType) {
     case ScrollSnapTypeNone:
       m_valueID = CSSValueNone;
       break;
     case ScrollSnapTypeMandatory:
       m_valueID = CSSValueMandatory;
       break;
     case ScrollSnapTypeProximity:
@@ skipping 66 matching lines @@
     default:
       break;
   }
   ASSERT_NOT_REACHED();
   return ContainsNone;
 }
 
 }  // namespace blink
 
 #endif