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 00018 00019 #ifndef NET_INSTAWEB_REWRITER_PUBLIC_JS_DEFER_DISABLED_FILTER_H_ 00020 #define NET_INSTAWEB_REWRITER_PUBLIC_JS_DEFER_DISABLED_FILTER_H_ 00021 00022 #include "net/instaweb/util/public/basictypes.h" 00023 #include "net/instaweb/htmlparse/public/empty_html_filter.h" 00024 00025 namespace net_instaweb { 00026 00027 class RewriteDriver; 00028 class HtmlElement; 00029 class Statistics; 00030 00035 class JsDeferDisabledFilter : public EmptyHtmlFilter { 00036 public: 00037 static const char kSuffix[]; 00038 00039 explicit JsDeferDisabledFilter(RewriteDriver* driver); 00040 virtual ~JsDeferDisabledFilter(); 00041 00042 virtual void StartDocument(); 00043 virtual void StartElement(HtmlElement* element); 00044 virtual void EndElement(HtmlElement* element); 00045 virtual void EndDocument(); 00046 virtual const char* Name() const { return "JsDeferDisabledFilter"; } 00047 00048 static void Initialize(Statistics* statistics); 00049 static void Terminate(); 00050 00051 private: 00052 void InsertJsDeferCode(HtmlElement* element); 00053 00054 RewriteDriver* rewrite_driver_; 00055 00057 bool script_written_; 00058 bool defer_js_enabled_; 00059 bool debug_; 00060 00061 DISALLOW_COPY_AND_ASSIGN(JsDeferDisabledFilter); 00062 }; 00063 00064 } 00065 00066 #endif ///< NET_INSTAWEB_REWRITER_PUBLIC_JS_DEFER_DISABLED_FILTER_H_