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// Copyright 2014 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_CSS_RULE_LIST_H_
#define COBALT_CSSOM_CSS_RULE_LIST_H_
#include <string>
#include <vector>
#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "cobalt/script/wrappable.h"
namespace cobalt {
namespace cssom {
class CSSRule;
class CSSRuleVisitor;
class CSSStyleSheet;
// The CSSRuleList interface represents an ordered collection of CSS
// style rules.
// https://www.w3.org/TR/2013/WD-cssom-20131205/#the-cssrulelist-interface
class CSSRuleList : public base::SupportsWeakPtr<CSSRuleList>,
public script::Wrappable {
public:
CSSRuleList();
// Web API: CSSRuleList
//
// Returns the number of CSSRule objects represented by the collection.
unsigned int length() const;
// The item(index) method must return the indexth CSSRule object in the
// collection. If there is no indexth object in the collection, then the
// method must return null.
scoped_refptr<CSSRule> Item(unsigned int index) const;
// Custom, not in any spec.
//
CSSStyleSheet* parent_css_style_sheet() { return parent_css_style_sheet_; }
// Inserts a new rule into the list. This is used by CSSGroupingRule and
// CSSStyleSheet. It takes a string as input and parses it into a rule.
unsigned int InsertRule(const std::string& rule, unsigned int index);
void AttachToCSSStyleSheet(CSSStyleSheet* style_sheet);
void AppendCSSRule(const scoped_refptr<CSSRule>& css_rule);
void Accept(CSSRuleVisitor* visitor);
DEFINE_WRAPPABLE_TYPE(CSSRuleList);
private:
typedef std::vector<scoped_refptr<CSSRule> > CSSRules;
~CSSRuleList();
CSSRules css_rules_;
CSSStyleSheet* parent_css_style_sheet_;
int next_index_ = 0;
DISALLOW_COPY_AND_ASSIGN(CSSRuleList);
};
} // namespace cssom
} // namespace cobalt
#endif // COBALT_CSSOM_CSS_RULE_LIST_H_