Page Speed Optimization Libraries
1.7.30.3
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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_SCAN_FILTER_H_ 00020 #define NET_INSTAWEB_REWRITER_PUBLIC_SCAN_FILTER_H_ 00021 00022 #include "net/instaweb/htmlparse/public/empty_html_filter.h" 00023 00024 namespace net_instaweb { 00025 00026 class HtmlCdataNode; 00027 class HtmlCharactersNode; 00028 class HtmlCommentNode; 00029 class HtmlDirectiveNode; 00030 class HtmlElement; 00031 class HtmlIEDirectiveNode; 00032 class RewriteDriver; 00033 00040 class ScanFilter : public EmptyHtmlFilter { 00041 public: 00042 explicit ScanFilter(RewriteDriver* driver); 00043 virtual ~ScanFilter(); 00044 00045 virtual void StartDocument(); 00046 virtual void StartElement(HtmlElement* element); 00047 virtual void Cdata(HtmlCdataNode* cdata); 00048 virtual void Comment(HtmlCommentNode* comment); 00049 virtual void IEDirective(HtmlIEDirectiveNode* directive); 00050 virtual void Characters(HtmlCharactersNode* characters); 00051 virtual void Directive(HtmlDirectiveNode* directive); 00052 virtual void Flush(); 00053 00054 virtual const char* Name() const { return "Scan"; } 00055 00056 private: 00057 RewriteDriver* driver_; 00058 bool seen_any_nodes_; 00059 bool seen_refs_; 00060 bool seen_base_; 00061 bool seen_meta_tag_charset_; 00062 }; 00063 00064 } 00065 00066 #endif ///< NET_INSTAWEB_REWRITER_PUBLIC_SCAN_FILTER_H_