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

// 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.

#ifndef StyleNonInheritedVariables_h
#define StyleNonInheritedVariables_h

#include "core/css/CSSValue.h"
#include "core/css/CSSVariableData.h"
#include "wtf/Forward.h"
#include "wtf/HashMap.h"
#include "wtf/text/AtomicStringHash.h"

namespace blink {

class StyleNonInheritedVariables {
public:
    static std::unique_ptr<StyleNonInheritedVariables> create() { return wrapUnique(new StyleNonInheritedVariables); }

    std::unique_ptr<StyleNonInheritedVariables> copy() { return wrapUnique(new StyleNonInheritedVariables(*this)); }

    bool operator==(const StyleNonInheritedVariables& other) const;
    bool operator!=(const StyleNonInheritedVariables& other) const { return !(*this == other); }

    void setVariable(const AtomicString& name, PassRefPtr<CSSVariableData> value) { m_data.set(name, value); }
    CSSVariableData* getVariable(const AtomicString& name) const;
    void removeVariable(const AtomicString&);

    void setRegisteredVariable(const AtomicString&, const CSSValue*);
    CSSValue* registeredVariable(const AtomicString& name) const { return m_registeredData.get(name); }

private:
    StyleNonInheritedVariables() = default;
    StyleNonInheritedVariables(StyleNonInheritedVariables&);

    friend class CSSVariableResolver;

    HashMap<AtomicString, RefPtr<CSSVariableData>> m_data;
    HashMap<AtomicString, Persistent<CSSValue>> m_registeredData;
};

} // namespace blink

#endif // StyleNonInheritedVariables_h