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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.
#include "core/css/cssom/CSSSimpleLength.h"
#include "bindings/core/v8/ExceptionState.h"
#include "core/css/CSSPrimitiveValue.h"
#include "core/css/cssom/CSSCalcLength.h"
#include "wtf/text/StringBuilder.h"
namespace blink {
CSSSimpleLength* CSSSimpleLength::create(double value,
const String& type,
ExceptionState& exceptionState) {
CSSPrimitiveValue::UnitType unit = CSSLengthValue::unitFromName(type);
if (!CSSLengthValue::isSupportedLengthUnit(unit)) {
exceptionState.throwTypeError("Invalid unit for CSSSimpleLength: " + type);
return nullptr;
}
return new CSSSimpleLength(value, unit);
}
CSSSimpleLength* CSSSimpleLength::fromCSSValue(const CSSPrimitiveValue& value) {
DCHECK(value.isLength() || value.isPercentage());
if (value.isPercentage())
return new CSSSimpleLength(value.getDoubleValue(),
CSSPrimitiveValue::UnitType::Percentage);
return new CSSSimpleLength(value.getDoubleValue(),
value.typeWithCalcResolved());
}
bool CSSSimpleLength::containsPercent() const {
return lengthUnit() == CSSPrimitiveValue::UnitType::Percentage;
}
String CSSSimpleLength::unit() const {
if (lengthUnit() == CSSPrimitiveValue::UnitType::Percentage)
return "percent";
return CSSPrimitiveValue::unitTypeToString(m_unit);
}
CSSLengthValue* CSSSimpleLength::addInternal(const CSSLengthValue* other) {
const CSSSimpleLength* o = toCSSSimpleLength(other);
DCHECK_EQ(m_unit, o->m_unit);
return create(m_value + o->value(), m_unit);
}
CSSLengthValue* CSSSimpleLength::subtractInternal(const CSSLengthValue* other) {
const CSSSimpleLength* o = toCSSSimpleLength(other);
DCHECK_EQ(m_unit, o->m_unit);
return create(m_value - o->value(), m_unit);
}
CSSLengthValue* CSSSimpleLength::multiplyInternal(double x) {
return create(m_value * x, m_unit);
}
CSSLengthValue* CSSSimpleLength::divideInternal(double x) {
DCHECK_NE(x, 0);
return create(m_value / x, m_unit);
}
CSSValue* CSSSimpleLength::toCSSValue() const {
return CSSPrimitiveValue::create(m_value, m_unit);
}
} // namespace blink
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