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// Copyright 2017 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 THIRD_PARTY_BLINK_RENDERER_CORE_CSS_CSSOM_CSS_MATH_NEGATE_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_CSS_CSSOM_CSS_MATH_NEGATE_H_
#include "base/macros.h"
#include "third_party/blink/renderer/core/css/cssom/css_math_value.h"
namespace blink {
// Represents the negation of a CSSNumericValue.
// See CSSMathNegate.idl for more information about this class.
class CORE_EXPORT CSSMathNegate : public CSSMathValue {
DEFINE_WRAPPERTYPEINFO();
public:
// The constructor defined in the IDL.
static CSSMathNegate* Create(const CSSNumberish& arg) {
return Create(CSSNumericValue::FromNumberish(arg));
}
// Blink-internal constructor
static CSSMathNegate* Create(CSSNumericValue* value) {
return MakeGarbageCollected<CSSMathNegate>(value, value->Type());
}
CSSMathNegate(CSSNumericValue* value, const CSSNumericValueType& type)
: CSSMathValue(type), value_(value) {}
String getOperator() const final { return "negate"; }
void value(CSSNumberish& value) { value.SetCSSNumericValue(value_); }
// Blink-internal methods
const CSSNumericValue& Value() const { return *value_; }
// From CSSStyleValue.
StyleValueType GetType() const final { return CSSStyleValue::kNegateType; }
void Trace(Visitor* visitor) const override {
visitor->Trace(value_);
CSSMathValue::Trace(visitor);
}
bool Equals(const CSSNumericValue& other) const final {
if (other.GetType() != kNegateType)
return false;
// We can safely cast here as we know 'other' has the same type as us.
const auto& other_negate = static_cast<const CSSMathNegate&>(other);
return value_->Equals(*other_negate.value_);
}
CSSMathExpressionNode* ToCalcExpressionNode() const final {
// TODO(crbug.com/xxx): Implement
return nullptr;
}
private:
// From CSSNumericValue
CSSNumericValue* Negate() final { return value_.Get(); }
base::Optional<CSSNumericSumValue> SumValue() const final;
void BuildCSSText(Nested, ParenLess, StringBuilder&) const final;
Member<CSSNumericValue> value_;
DISALLOW_COPY_AND_ASSIGN(CSSMathNegate);
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_CSS_CSSOM_CSS_MATH_NEGATE_H_
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