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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_CSS_PARSER_POSITION_PARSE_STRUCTURES_H_
#define COBALT_CSS_PARSER_POSITION_PARSE_STRUCTURES_H_
#include "base/memory/scoped_ptr.h"
#include "cobalt/cssom/property_list_value.h"
#include "cobalt/cssom/property_value.h"
namespace cobalt {
namespace css_parser {
// This helps parsing and verifying syntax of background position and
// transform origin property values.
class PositionParseStructure {
public:
PositionParseStructure();
bool PushBackElement(const scoped_refptr<cssom::PropertyValue>& element);
// A special case that a combination of keyword and length or percentage
// cannot be reordered.
bool IsPositionValidOnSizeTwo();
const cssom::PropertyListValue::Builder& position_builder() const {
return position_builder_;
}
private:
bool is_horizontal_specified_;
bool is_vertical_specified_;
bool previous_is_non_center_keyword_;
int number_of_center_keyword_;
cssom::PropertyListValue::Builder position_builder_;
};
} // namespace css_parser
} // namespace cobalt
#endif // COBALT_CSS_PARSER_POSITION_PARSE_STRUCTURES_H_