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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_CSSOM_ID_SELECTOR_H_
#define COBALT_CSSOM_ID_SELECTOR_H_
#include <string>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "cobalt/base/tokens.h"
#include "cobalt/cssom/selector_tree.h"
#include "cobalt/cssom/simple_selector.h"
#include "cobalt/cssom/specificity.h"
namespace cobalt {
namespace cssom {
class SelectorVisitor;
// An ID selector represents an element instance that has an identifier that
// matches the identifier in the ID selector.
// https://www.w3.org/TR/selectors4/#id-selector
class IdSelector : public SimpleSelector {
public:
explicit IdSelector(const std::string& id)
: SimpleSelector(kIdSelector, base::Tokens::id_selector_prefix(),
base::Token(id)) {}
~IdSelector() override {}
// From Selector.
void Accept(SelectorVisitor* visitor) override;
Specificity GetSpecificity() const override { return Specificity(1, 0, 0); }
// From SimpleSelector.
void IndexSelectorTreeNode(SelectorTree::Node* parent_node,
SelectorTree::Node* child_node,
CombinatorType combinator) override;
// Rest of public methods.
base::Token id() const { return text(); }
private:
DISALLOW_COPY_AND_ASSIGN(IdSelector);
};
} // namespace cssom
} // namespace cobalt
#endif // COBALT_CSSOM_ID_SELECTOR_H_