add_ids_filter.h

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/*
 * Copyright 2011 Google Inc.
 *
 * 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 NET_INSTAWEB_REWRITER_PUBLIC_ADD_IDS_FILTER_H_
#define NET_INSTAWEB_REWRITER_PUBLIC_ADD_IDS_FILTER_H_

#include <vector>

#include "net/instaweb/rewriter/public/rewrite_driver.h"
#include "pagespeed/kernel/base/string.h"
#include "pagespeed/kernel/html/empty_html_filter.h"
#include "pagespeed/kernel/html/html_element.h"

namespace net_instaweb {

class AddIdsFilter : public EmptyHtmlFilter {
 public:
  static const char kIdPrefix[];

  explicit AddIdsFilter(RewriteDriver* driver);
  virtual ~AddIdsFilter();

  virtual void StartDocument();
  virtual void StartElement(HtmlElement* element);
  virtual void EndElement(HtmlElement* element);
  virtual const char* Name() const { return "AddIdsFilter"; }

 private:
  GoogleString GetDivCountStackEncoding();

  static const int kIsId;
  std::vector<int> div_count_stack_;
  std::vector<const HtmlElement::Attribute*> id_stack_;
  RewriteDriver* driver_;
};

}  

#endif