Page Speed Optimization Libraries  1.3.25.1
net/instaweb/rewriter/public/js_inline_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_INLINE_FILTER_H_
00020 #define NET_INSTAWEB_REWRITER_PUBLIC_JS_INLINE_FILTER_H_
00021 
00022 #include <cstddef>
00023 
00024 #include "net/instaweb/rewriter/public/common_filter.h"
00025 #include "net/instaweb/rewriter/public/resource.h"
00026 #include "net/instaweb/rewriter/public/script_tag_scanner.h"
00027 #include "net/instaweb/util/public/basictypes.h"
00028 #include "net/instaweb/util/public/string_util.h"
00029 
00030 namespace net_instaweb {
00031 class HtmlElement;
00032 class HtmlCharactersNode;
00033 class RewriteDriver;
00034 
00036 class JsInlineFilter : public CommonFilter {
00037  public:
00038   explicit JsInlineFilter(RewriteDriver* driver);
00039   virtual ~JsInlineFilter();
00040 
00041   virtual void StartDocumentImpl();
00042   virtual void EndDocument();
00043   virtual void StartElementImpl(HtmlElement* element);
00044   virtual void EndElementImpl(HtmlElement* element);
00045   virtual void Characters(HtmlCharactersNode* characters);
00046   virtual const char* Name() const { return "InlineJs"; }
00047 
00048  private:
00049   class Context;
00050   friend class Context;
00051 
00052   bool ShouldInline(const ResourcePtr& resource) const;
00053   void RenderInline(const ResourcePtr& resource, const StringPiece& text,
00054                     HtmlElement* element);
00055 
00056   const size_t size_threshold_bytes_;
00057   ScriptTagScanner script_tag_scanner_;
00058 
00064   bool should_inline_;
00065 
00066   DISALLOW_COPY_AND_ASSIGN(JsInlineFilter);
00067 };
00068 
00069 }  
00070 
00071 #endif  ///< NET_INSTAWEB_REWRITER_PUBLIC_JS_INLINE_FILTER_H_
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