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// Copyright 2015 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef COBALT_CSSOM_CALC_VALUE_H_
#define COBALT_CSSOM_CALC_VALUE_H_
#include <string>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "cobalt/base/polymorphic_equatable.h"
#include "cobalt/cssom/length_value.h"
#include "cobalt/cssom/percentage_value.h"
#include "cobalt/cssom/property_value.h"
namespace cobalt {
namespace cssom {
// Represets the result of the mathematical calculation it contains, using
// standard operator precedence rules.
// TODO: Implement the complete version of CalcValue. The
// current CalcValue is just a simplified implementation.
// https://www.w3.org/TR/css3-values/#calc-notation
class CalcValue : public PropertyValue {
public:
CalcValue(const scoped_refptr<LengthValue>& length_value,
const scoped_refptr<PercentageValue>& percentage_value)
: length_value_(length_value), percentage_value_(percentage_value) {}
explicit CalcValue(const scoped_refptr<LengthValue>& length_value)
: length_value_(length_value),
percentage_value_(new PercentageValue(0.0f)) {}
explicit CalcValue(const scoped_refptr<PercentageValue>& percentage_value)
: length_value_(new LengthValue(0.0f, kPixelsUnit)),
percentage_value_(percentage_value) {}
void Accept(PropertyValueVisitor* visitor) override;
const scoped_refptr<LengthValue>& length_value() const {
return length_value_;
}
const scoped_refptr<PercentageValue> percentage_value() const {
return percentage_value_.get();
}
std::string ToString() const override;
bool operator==(const CalcValue& other) const {
return *length_value_ == *other.length_value_ &&
*percentage_value_ == *other.percentage_value_;
}
DEFINE_POLYMORPHIC_EQUATABLE_TYPE(CalcValue);
private:
~CalcValue() override {}
const scoped_refptr<LengthValue> length_value_;
const scoped_refptr<PercentageValue> percentage_value_;
DISALLOW_COPY_AND_ASSIGN(CalcValue);
};
} // namespace cssom
} // namespace cobalt
#endif // COBALT_CSSOM_CALC_VALUE_H_