/*
 * Copyright 2014 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_PROPERTY_KEY_LIST_VALUE_H_
#define COBALT_CSSOM_PROPERTY_KEY_LIST_VALUE_H_

#include <string>

#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/memory/scoped_ptr.h"
#include "cobalt/base/polymorphic_equatable.h"
#include "cobalt/cssom/list_value.h"
#include "cobalt/cssom/property_definitions.h"

namespace cobalt {
namespace cssom {

class PropertyValueVisitor;

// A list of values of type PropertyKey.  May be used to store property
// keys, such as for the 'transition-property' CSS property.
class PropertyKeyListValue : public ListValue<PropertyKey> {
 public:
  explicit PropertyKeyListValue(
      scoped_ptr<ListValue<PropertyKey>::Builder> value)
      : ListValue(value.Pass()) {}

  void Accept(PropertyValueVisitor* visitor) OVERRIDE {
    visitor->VisitPropertyKeyList(this);
  }

  std::string ToString() const OVERRIDE;

  DEFINE_POLYMORPHIC_EQUATABLE_TYPE(PropertyKeyListValue);

 private:
  virtual ~PropertyKeyListValue() OVERRIDE {}

  DISALLOW_COPY_AND_ASSIGN(PropertyKeyListValue);
};

}  // namespace cssom
}  // namespace cobalt

#endif  // COBALT_CSSOM_PROPERTY_KEY_LIST_VALUE_H_