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// 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_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_