Skeleton implementation of CSS Properties and Values API

third_party/WebKit/Source/core/style/StyleVariableData.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/style/StyleVariableData.h"
 
 #include "core/style/DataEquivalency.h"
 
 namespace blink {
 
@@ skipping 18 matching lines @@
 
     return true;
 }
 
 StyleVariableData::StyleVariableData(StyleVariableData& other)
 {
     if (!other.m_root) {
         m_root = &other;
     } else {
         m_data = other.m_data;
+        m_registeredData = other.m_registeredData;
         m_root = other.m_root;
     }
 }
 
 CSSVariableData* StyleVariableData::getVariable(const AtomicString& name) const
 {
     auto result = m_data.find(name);
     if (result == m_data.end() && m_root)
         return m_root->getVariable(name);
     if (result == m_data.end())
         return nullptr;
     return result->value.get();
 }
 
+void StyleVariableData::setRegisteredInheritedProperty(const AtomicString& name, const CSSValue* parsedValue)
+{
+    m_registeredData.set(name, const_cast<CSSValue*>(parsedValue));
+}
+
+void StyleVariableData::removeVariable(const AtomicString& name)
+{
+    m_data.set(name, nullptr);
+    auto iterator = m_registeredData.find(name);
+    if (iterator != m_registeredData.end())
+        iterator->value = nullptr;
+}
+
 std::unique_ptr<HashMap<AtomicString, RefPtr<CSSVariableData>>> StyleVariableData::getVariables() const
 {
     std::unique_ptr<HashMap<AtomicString, RefPtr<CSSVariableData>>> result;
     if (m_root) {
         result.reset(new HashMap<AtomicString, RefPtr<CSSVariableData>>(m_root->m_data));
         for (auto it = m_data.begin(); it != m_data.end(); ++it)
             result->set(it->key, it->value);
     } else {
         result.reset(new HashMap<AtomicString, RefPtr<CSSVariableData>>(m_data));
     }
     return result;
 }
 
 } // namespace blink