CSS Properties and Values API: Support non-inherited custom properties

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

+// Copyright 2016 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/StyleNonInheritedVariables.h"
+
+#include "core/style/DataEquivalency.h"
+
+namespace blink {
+
+bool StyleNonInheritedVariables::operator==(const StyleNonInheritedVariables& other) const
+{
+    if (m_data.size() != other.m_data.size())
+        return false;
+
+    for (const auto& iter : m_data) {
+        RefPtr<CSSVariableData> otherData = other.m_data.get(iter.key);
+        if (!dataEquivalent(iter.value, otherData))
+            return false;
+    }
+
+    return true;
+}
+
+CSSVariableData* StyleNonInheritedVariables::getVariable(const AtomicString& name) const
+{
+    return m_data.get(name);
+}
+
+void StyleNonInheritedVariables::setRegisteredVariable(const AtomicString& name, const CSSValue* parsedValue)
+{
+    m_registeredData.set(name, const_cast<CSSValue*>(parsedValue));
+}
+
+void StyleNonInheritedVariables::removeVariable(const AtomicString& name)
+{
+    m_data.set(name, nullptr);
+    m_registeredData.set(name, nullptr);
+}
+
+StyleNonInheritedVariables::StyleNonInheritedVariables(StyleNonInheritedVariables& other)
+{
+    m_data = other.m_data;
+    m_registeredData = other.m_registeredData;
+}
+
+} // namespace blink