| // Copyright 2015 The Cobalt Authors. 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 "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_ |