Page Speed Optimization Libraries  1.7.30.2
net/instaweb/rewriter/public/split_html_beacon_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 
00021 
00022 #ifndef NET_INSTAWEB_REWRITER_PUBLIC_SPLIT_HTML_BEACON_FILTER_H_
00023 #define NET_INSTAWEB_REWRITER_PUBLIC_SPLIT_HTML_BEACON_FILTER_H_
00024 
00025 #include "net/instaweb/rewriter/public/common_filter.h"
00026 #include "net/instaweb/util/public/basictypes.h"
00027 
00028 namespace net_instaweb {
00029 
00030 class HtmlElement;
00031 class RewriteDriver;
00032 class Statistics;
00033 class Variable;
00034 
00036 class SplitHtmlBeaconFilter : public CommonFilter {
00037  public:
00039   static const char kSplitHtmlBeaconAddedCount[];
00040 
00041   explicit SplitHtmlBeaconFilter(RewriteDriver* driver);
00042   virtual ~SplitHtmlBeaconFilter() {}
00043 
00044   virtual void DetermineEnabled();
00045 
00046   static void InitStats(Statistics* statistics);
00047 
00048   virtual void StartDocumentImpl() {}
00049   virtual void EndDocument();
00050   virtual void StartElementImpl(HtmlElement* element) {}
00051   virtual void EndElementImpl(HtmlElement* element) {}
00052   virtual const char* Name() const { return "SplitHtmlBeacon"; }
00053 
00058   static bool ShouldApply(RewriteDriver* driver);
00059 
00060  private:
00061   Variable* split_html_beacon_added_count_;
00062 
00063   DISALLOW_COPY_AND_ASSIGN(SplitHtmlBeaconFilter);
00064 };
00065 
00066 }  
00067 
00068 #endif  ///< NET_INSTAWEB_REWRITER_PUBLIC_SPLIT_HTML_BEACON_FILTER_H_
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