Page Speed Optimization Libraries  1.2.24.1
net/instaweb/rewriter/public/blink_filter.h
Go to the documentation of this file.
00001 /*
00002  * Copyright 2012 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_BLINK_FILTER_H_
00020 #define NET_INSTAWEB_REWRITER_PUBLIC_BLINK_FILTER_H_
00021 
00022 #include <vector>
00023 
00024 #include "net/instaweb/htmlparse/public/html_writer_filter.h"
00025 #include "net/instaweb/rewriter/blink_critical_line_data.pb.h"
00026 #include "net/instaweb/rewriter/public/blink_util.h"
00027 #include "net/instaweb/util/public/basictypes.h"
00028 #include "net/instaweb/util/public/property_cache.h"
00029 #include "net/instaweb/util/public/string.h"
00030 #include "net/instaweb/util/public/string_util.h"
00031 #include "net/instaweb/util/public/string_writer.h"
00032 #include "net/instaweb/util/public/json.h"
00033 
00034 namespace net_instaweb {
00035 
00036 class HtmlElement;
00037 class RewriteDriver;
00038 class RewriteOptions;
00039 
00042 class BlinkFilter : public HtmlWriterFilter {
00043  public:
00045   static const char kBlinkCriticalLineDataPropertyName[];
00046   static const char kBlinkCohort[];
00047   static const char kRefreshPageJs[];
00048 
00049   explicit BlinkFilter(RewriteDriver* rewrite_driver);
00050   virtual ~BlinkFilter();
00051 
00052   void StartDocument();
00053   void StartElement(HtmlElement* element);
00054   void EndElement(HtmlElement* element);
00055   void EndDocument();
00056   void WriteString(StringPiece str);
00057   void Flush();
00058   virtual const char* Name() const { return "BlinkFilter"; }
00059 
00060  private:
00061   void SendCookies();
00062   void SendNonCriticalJson(GoogleString* str);
00063   void ServeNonCriticalPanelContents();
00064   void SendNonCacheableObject(const Json::Value& json);
00065   void ObtainBlinkCriticalLineData();
00066   void HandleLastModifiedChange();
00070   GoogleString GetXpathOfCurrentElement(HtmlElement* element);
00071 
00072   RewriteDriver* rewrite_driver_; 
00073   const RewriteOptions* rewrite_options_; 
00074   AttributesToNonCacheableValuesMap attribute_non_cacheable_values_map_;
00075   std::vector<int> panel_number_num_instances_;
00076   GoogleString buffer_;
00077   StringWriter string_writer_;
00078   const HtmlElement* current_non_cacheable_element_; 
00079   GoogleString current_panel_id_;
00080   const PropertyCache::Cohort* cohort_; 
00081   BlinkCriticalLineData blink_critical_line_data_;
00082   bool abort_filter_;
00083   std::vector<int> num_children_stack_;
00084 
00085   DISALLOW_COPY_AND_ASSIGN(BlinkFilter);
00086 };
00087 
00088 }  
00089 
00090 #endif  ///< NET_INSTAWEB_REWRITER_PUBLIC_BLINK_FILTER_H_
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Defines