Page Speed Optimization Libraries  1.7.30.1
net/instaweb/rewriter/public/cache_html_filter.h
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00001 /*
00002  * Copyright 2013 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 
00019 
00020 #ifndef NET_INSTAWEB_REWRITER_PUBLIC_CACHE_HTML_FILTER_H_
00021 #define NET_INSTAWEB_REWRITER_PUBLIC_CACHE_HTML_FILTER_H_
00022 
00023 #include <vector>
00024 
00025 #include "net/instaweb/htmlparse/public/html_writer_filter.h"
00026 #include "net/instaweb/rewriter/cache_html_info.pb.h"
00027 #include "net/instaweb/rewriter/public/blink_util.h"
00028 #include "net/instaweb/util/public/basictypes.h"
00029 #include "net/instaweb/util/public/property_cache.h"
00030 #include "net/instaweb/util/public/string.h"
00031 #include "net/instaweb/util/public/string_util.h"
00032 #include "net/instaweb/util/public/string_writer.h"
00033 #include "net/instaweb/util/public/json.h"
00034 
00035 namespace net_instaweb {
00036 
00037 class HtmlElement;
00038 class RewriteDriver;
00039 class RewriteOptions;
00040 
00043 class CacheHtmlFilter : public HtmlWriterFilter {
00044  public:
00045   explicit CacheHtmlFilter(RewriteDriver* rewrite_driver);
00046   virtual ~CacheHtmlFilter();
00047 
00048   virtual void StartDocument();
00049   virtual void StartElement(HtmlElement* element);
00050   virtual void EndElement(HtmlElement* element);
00051   virtual void EndDocument();
00052   void WriteString(StringPiece str);
00053   virtual void Flush();
00054   virtual const char* Name() const { return "CacheHtmlFilter"; }
00055 
00056  private:
00057   void SendCookies();
00058   void SendNonCacheableObject(const Json::Value& json);
00062   GoogleString GetXpathOfCurrentElement(HtmlElement* element);
00063 
00064   RewriteDriver* rewrite_driver_; 
00065   const RewriteOptions* rewrite_options_; 
00066   AttributesToNonCacheableValuesMap attribute_non_cacheable_values_map_;
00067   std::vector<int> panel_number_num_instances_;
00068   GoogleString buffer_;
00069   StringWriter string_writer_;
00070   const HtmlElement* current_non_cacheable_element_; 
00071   GoogleString current_panel_id_;
00072   const PropertyCache::Cohort* cohort_; 
00073   CacheHtmlInfo cache_html_info_;
00074   bool abort_filter_;
00075   std::vector<int> num_children_stack_;
00076 
00077   DISALLOW_COPY_AND_ASSIGN(CacheHtmlFilter);
00078 };
00079 
00080 }  
00081 
00082 #endif  ///< NET_INSTAWEB_REWRITER_PUBLIC_CACHE_HTML_FILTER_H_
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