// Copyright 2014 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 CSSUnsetValue_h
#define CSSUnsetValue_h

#include "core/css/CSSValue.h"
#include "wtf/PassRefPtr.h"

namespace blink {

class CSSUnsetValue : public CSSValue {
 public:
  static CSSUnsetValue* create();

  String customCSSText() const;

  bool equals(const CSSUnsetValue&) const { return true; }

  DEFINE_INLINE_TRACE_AFTER_DISPATCH() {
    CSSValue::traceAfterDispatch(visitor);
  }

 private:
  friend class CSSValuePool;

  CSSUnsetValue() : CSSValue(UnsetClass) {}
};

DEFINE_CSS_VALUE_TYPE_CASTS(CSSUnsetValue, isUnsetValue());

}  // namespace blink

#endif  // CSSUnsetValue_h
