Page Speed Optimization Libraries  1.8.31.3
net/instaweb/rewriter/public/scan_filter.h
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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_
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