Page Speed Optimization Libraries  1.3.25.1
net/instaweb/rewriter/public/div_structure_filter.h
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00001 /*
00002  * Copyright 2011 Google Inc.
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *      http:///www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 
00018 
00019 #ifndef NET_INSTAWEB_REWRITER_PUBLIC_DIV_STRUCTURE_FILTER_H_
00020 #define NET_INSTAWEB_REWRITER_PUBLIC_DIV_STRUCTURE_FILTER_H_
00021 
00022 #include <vector>
00023 #include "net/instaweb/htmlparse/public/empty_html_filter.h"
00024 #include "net/instaweb/util/public/string.h"
00025 
00026 namespace net_instaweb {
00027 
00028 class HtmlElement;
00029 
00043 class DivStructureFilter : public EmptyHtmlFilter {
00044  public:
00045   static const char kParamName[];
00046 
00047   explicit DivStructureFilter();
00048   virtual ~DivStructureFilter();
00049 
00050   virtual void StartDocument();
00051   virtual void StartElement(HtmlElement* element);
00052   virtual void EndElement(HtmlElement* element);
00053   virtual const char* Name() const { return "DivStructureFilter"; }
00054 
00055   static GoogleString GetDivCountStackEncoding(
00056       const std::vector<int>& div_count_stack);
00057 
00058  private:
00059   std::vector<int> div_count_stack_;
00060 };
00061 
00062 }  
00063 
00064 #endif  ///< NET_INSTAWEB_REWRITER_PUBLIC_DIV_STRUCTURE_FILTER_H_
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