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 00019 00020 #ifndef NET_INSTAWEB_REWRITER_PUBLIC_DETECT_REFLOW_JS_DEFER_FILTER_H_ 00021 #define NET_INSTAWEB_REWRITER_PUBLIC_DETECT_REFLOW_JS_DEFER_FILTER_H_ 00022 00023 #include "net/instaweb/util/public/basictypes.h" 00024 #include "net/instaweb/htmlparse/public/empty_html_filter.h" 00025 00026 namespace net_instaweb { 00027 00028 class RewriteDriver; 00029 class HtmlElement; 00030 class Statistics; 00031 00034 class DetectReflowJsDeferFilter : public EmptyHtmlFilter { 00035 public: 00036 explicit DetectReflowJsDeferFilter(RewriteDriver* driver); 00037 virtual ~DetectReflowJsDeferFilter(); 00038 00039 virtual void StartDocument(); 00040 virtual void StartElement(HtmlElement* element); 00041 virtual void EndElement(HtmlElement* element); 00042 virtual void EndDocument(); 00043 virtual const char* Name() const { return "DetectReflowJsDeferFilter"; } 00044 00045 void InsertDetectReflowCode(HtmlElement* element); 00046 00047 static void Initialize(Statistics* statistics); 00048 static void Terminate(); 00049 00050 private: 00051 RewriteDriver* rewrite_driver_; 00052 00054 bool script_written_; 00055 bool defer_js_enabled_; 00056 bool debug_; 00057 00058 DISALLOW_COPY_AND_ASSIGN(DetectReflowJsDeferFilter); 00059 }; 00060 00061 } 00062 00063 #endif ///< NET_INSTAWEB_REWRITER_PUBLIC_DETECT_REFLOW_JS_DEFER_FILTER_H_