| /* |
| * 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_BEFORE_PSEUDO_ELEMENT_H_ |
| #define COBALT_CSSOM_BEFORE_PSEUDO_ELEMENT_H_ |
| |
| #include "base/basictypes.h" |
| #include "base/compiler_specific.h" |
| #include "cobalt/base/tokens.h" |
| #include "cobalt/cssom/pseudo_element.h" |
| |
| namespace cobalt { |
| namespace cssom { |
| |
| class SelectorVisitor; |
| |
| // Authors specify the style and location of generated content with the :before |
| // and :after pseudo-elements. As their names indicate, the :before and :after |
| // pseudo-elements specify the location of content before and after an element's |
| // document tree content. The 'content' property, in conjunction with these |
| // pseudo-elements, specifies what is inserted. |
| // https://www.w3.org/TR/CSS21/generate.html#before-after-content |
| class BeforePseudoElement : public PseudoElement { |
| public: |
| BeforePseudoElement() |
| : PseudoElement(base::Tokens::before_pseudo_element_selector()) {} |
| ~BeforePseudoElement() OVERRIDE {} |
| |
| // From Selector. |
| void Accept(SelectorVisitor* visitor) OVERRIDE; |
| |
| // From PseudoElement. |
| BeforePseudoElement* AsBeforePseudoElement() OVERRIDE { return this; } |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(BeforePseudoElement); |
| }; |
| |
| } // namespace cssom |
| } // namespace cobalt |
| |
| #endif // COBALT_CSSOM_BEFORE_PSEUDO_ELEMENT_H_ |