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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_FONT_STYLE_VALUE_H_
#define COBALT_CSSOM_FONT_STYLE_VALUE_H_
#include <string>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/memory/ref_counted.h"
#include "cobalt/base/polymorphic_equatable.h"
#include "cobalt/cssom/property_value.h"
namespace cobalt {
namespace cssom {
class PropertyValueVisitor;
// Allows italic or oblique faces to be selected. Italic forms are generally
// cursive in nature while oblique faces are typically sloped versions of
// regular face.
// https://www.w3.org/TR/css3-fonts/#font-style-prop
class FontStyleValue : public PropertyValue {
public:
enum Value {
kItalic,
kNormal,
kOblique,
};
// For the sake of saving memory an explicit instantiation of this class
// is disallowed. Use getter methods below to obtain shared instances.
static const scoped_refptr<FontStyleValue>& GetItalic();
static const scoped_refptr<FontStyleValue>& GetNormal();
static const scoped_refptr<FontStyleValue>& GetOblique();
void Accept(PropertyValueVisitor* visitor) override;
Value value() const { return value_; }
std::string ToString() const override;
bool operator==(const FontStyleValue& other) const {
return value_ == other.value_;
}
DEFINE_POLYMORPHIC_EQUATABLE_TYPE(FontStyleValue);
// Implementation detail, has to be public in order to be constructible.
struct NonTrivialStaticFields;
private:
explicit FontStyleValue(Value value) : value_(value) {}
~FontStyleValue() override {}
const Value value_;
DISALLOW_COPY_AND_ASSIGN(FontStyleValue);
};
} // namespace cssom
} // namespace cobalt
#endif // COBALT_CSSOM_FONT_STYLE_VALUE_H_