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// 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.
#ifndef CSSLengthValue_h
#define CSSLengthValue_h
#include "core/css/CSSPrimitiveValue.h"
#include "core/css/cssom/CSSStyleValue.h"
namespace blink {
class CSSCalcDictionary;
class ExceptionState;
class CORE_EXPORT CSSLengthValue : public CSSStyleValue {
WTF_MAKE_NONCOPYABLE(CSSLengthValue);
DEFINE_WRAPPERTYPEINFO();
public:
static const int kNumSupportedUnits = 15;
static CSSLengthValue* from(const String& cssText, ExceptionState&);
static CSSLengthValue* from(double value,
const String& typeStr,
ExceptionState&);
static CSSLengthValue* from(const CSSCalcDictionary&, ExceptionState&);
static bool isSupportedLengthUnit(CSSPrimitiveValue::UnitType unit) {
return (CSSPrimitiveValue::isLength(unit) ||
unit == CSSPrimitiveValue::UnitType::Percentage) &&
unit != CSSPrimitiveValue::UnitType::QuirkyEms &&
unit != CSSPrimitiveValue::UnitType::UserUnits;
}
static CSSPrimitiveValue::UnitType unitFromName(const String& name);
static CSSLengthValue* fromCSSValue(const CSSPrimitiveValue&);
CSSLengthValue* add(const CSSLengthValue* other);
CSSLengthValue* subtract(const CSSLengthValue* other);
CSSLengthValue* multiply(double);
CSSLengthValue* divide(double, ExceptionState&);
virtual bool containsPercent() const = 0;
protected:
CSSLengthValue() {}
virtual CSSLengthValue* addInternal(const CSSLengthValue* other);
virtual CSSLengthValue* subtractInternal(const CSSLengthValue* other);
virtual CSSLengthValue* multiplyInternal(double);
virtual CSSLengthValue* divideInternal(double);
};
DEFINE_TYPE_CASTS(CSSLengthValue,
CSSStyleValue,
value,
(value->type() == CSSStyleValue::SimpleLengthType ||
value->type() == CSSStyleValue::CalcLengthType),
(value.type() == CSSStyleValue::SimpleLengthType ||
value.type() == CSSStyleValue::CalcLengthType));
} // namespace blink
#endif
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