| // 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_DOM_RULE_MATCHING_H_ |
| #define COBALT_DOM_RULE_MATCHING_H_ |
| |
| #include <string> |
| |
| #include "base/memory/ref_counted.h" |
| #include "cobalt/cssom/css_parser.h" |
| #include "cobalt/cssom/css_style_rule.h" |
| |
| namespace cobalt { |
| namespace dom { |
| |
| class Element; |
| class HTMLElement; |
| class NodeList; |
| class Node; |
| |
| // Only a subset of selectors is supported. |
| // TODO: Add markdown file with set of supported selectors. |
| // |
| // Those selectors that are supported are implemented after Selectors Level 4. |
| // https://www.w3.org/TR/selectors4/ |
| |
| // Updates the matching rules on an element. The parent and previous sibling |
| // need to have their matching rules updated before, since the current element's |
| // rule matching will depend on their rule matching states. |
| void UpdateElementMatchingRules(HTMLElement* current_element); |
| |
| // Returns the first element in the subtree that matches the given selector. |
| scoped_refptr<Element> QuerySelector(Node* node, const std::string& selectors, |
| cssom::CSSParser* css_parser); |
| |
| // Returns all the elements in the subtree that match the given selector. |
| scoped_refptr<NodeList> QuerySelectorAll(Node* node, |
| const std::string& selectors, |
| cssom::CSSParser* css_parser); |
| |
| // Returns true if any of the selectors in the rule matches the given element. |
| bool MatchRuleAndElement(cssom::CSSStyleRule* rule, Element* element); |
| |
| } // namespace dom |
| } // namespace cobalt |
| |
| #endif // COBALT_DOM_RULE_MATCHING_H_ |