Page Speed Optimization Libraries  1.5.27.2
net/instaweb/rewriter/public/js_outline_filter.h
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00001 /*
00002  * Copyright 2010 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_OUTLINE_FILTER_H_
00020 #define NET_INSTAWEB_REWRITER_PUBLIC_JS_OUTLINE_FILTER_H_
00021 
00022 #include <cstddef>
00023 
00024 #include "net/instaweb/rewriter/public/common_filter.h"
00025 #include "net/instaweb/rewriter/public/script_tag_scanner.h"
00026 #include "net/instaweb/util/public/basictypes.h"
00027 #include "net/instaweb/util/public/string.h"
00028 
00029 namespace net_instaweb {
00030 class HtmlCharactersNode;
00031 class HtmlElement;
00032 class MessageHandler;
00033 class OutputResource;
00034 class ServerContext;
00035 class RewriteDriver;
00036 
00038 class JsOutlineFilter : public CommonFilter {
00039  public:
00040   explicit JsOutlineFilter(RewriteDriver* driver);
00041   virtual ~JsOutlineFilter();
00042   static const char kFilterId[];
00043 
00044   virtual void StartDocumentImpl();
00045 
00046   virtual void StartElementImpl(HtmlElement* element);
00047   virtual void EndElementImpl(HtmlElement* element);
00048 
00049   virtual void Flush();
00050 
00052   virtual void Characters(HtmlCharactersNode* characters);
00053 
00054   virtual const char* Name() const { return "OutlineJs"; }
00055 
00056  private:
00057   bool WriteResource(const GoogleString& content, OutputResource* resource,
00058                      MessageHandler* handler);
00059   void OutlineScript(HtmlElement* element, const GoogleString& content);
00060 
00063   HtmlElement* inline_element_;
00065   HtmlCharactersNode* inline_chars_;
00066   ServerContext* server_context_;
00067   size_t size_threshold_bytes_;
00068   ScriptTagScanner script_tag_scanner_;
00069 
00070   DISALLOW_COPY_AND_ASSIGN(JsOutlineFilter);
00071 };
00072 
00073 }  
00074 
00075 #endif  ///< NET_INSTAWEB_REWRITER_PUBLIC_JS_OUTLINE_FILTER_H_
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