Page Speed Optimization Libraries
1.7.30.3
|
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 00018 00019 #ifndef NET_INSTAWEB_REWRITER_PUBLIC_CRITICAL_IMAGES_BEACON_FILTER_H_ 00020 #define NET_INSTAWEB_REWRITER_PUBLIC_CRITICAL_IMAGES_BEACON_FILTER_H_ 00021 00022 #include "net/instaweb/rewriter/public/common_filter.h" 00023 #include "net/instaweb/rewriter/public/critical_finder_support_util.h" 00024 #include "net/instaweb/util/public/basictypes.h" 00025 00026 namespace net_instaweb { 00027 00028 class HtmlElement; 00029 class RewriteDriver; 00030 class Statistics; 00031 class Variable; 00032 00037 class CriticalImagesBeaconFilter : public CommonFilter { 00038 public: 00040 static const char kCriticalImagesBeaconAddedCount[]; 00041 00042 explicit CriticalImagesBeaconFilter(RewriteDriver* driver); 00043 virtual ~CriticalImagesBeaconFilter(); 00044 00045 virtual void DetermineEnabled(); 00046 00047 static void InitStats(Statistics* statistics); 00048 00049 virtual void StartDocumentImpl() { } 00050 virtual void EndDocument(); 00051 virtual void StartElementImpl(HtmlElement* element) { } 00052 virtual void EndElementImpl(HtmlElement* element); 00053 virtual const char* Name() const { return "CriticalImagesBeacon"; } 00054 00057 static bool IncludeRenderedImagesInBeacon(RewriteDriver* rewrite_driver); 00058 00059 private: 00061 void Clear(); 00062 00063 BeaconMetadata beacon_metadata_; 00065 Variable* critical_images_beacon_added_count_; 00066 00067 DISALLOW_COPY_AND_ASSIGN(CriticalImagesBeaconFilter); 00068 }; 00069 00070 } 00071 00072 #endif ///< NET_INSTAWEB_REWRITER_PUBLIC_CRITICAL_IMAGES_BEACON_FILTER_H_