Page Speed Optimization Libraries
1.7.30.3
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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 class Statistics; 00035 class Variable; 00036 00038 class JsInlineFilter : public CommonFilter { 00039 public: 00040 static const char kNumJsInlined[]; 00041 explicit JsInlineFilter(RewriteDriver* driver); 00042 virtual ~JsInlineFilter(); 00043 00044 virtual void StartDocumentImpl(); 00045 virtual void EndDocument(); 00046 virtual void StartElementImpl(HtmlElement* element); 00047 virtual void EndElementImpl(HtmlElement* element); 00048 virtual void Characters(HtmlCharactersNode* characters); 00049 virtual const char* Name() const { return "InlineJs"; } 00053 virtual bool AllowUnauthorizedDomain() const { return true; } 00054 00055 static void InitStats(Statistics* statistics); 00056 00057 private: 00058 class Context; 00059 friend class Context; 00060 00061 bool ShouldInline(const ResourcePtr& resource) const; 00062 void RenderInline(const ResourcePtr& resource, const StringPiece& text, 00063 HtmlElement* element); 00064 00065 const size_t size_threshold_bytes_; 00066 ScriptTagScanner script_tag_scanner_; 00067 00073 bool should_inline_; 00074 00075 Variable* num_js_inlined_; 00076 00077 DISALLOW_COPY_AND_ASSIGN(JsInlineFilter); 00078 }; 00079 00080 } 00081 00082 #endif ///< NET_INSTAWEB_REWRITER_PUBLIC_JS_INLINE_FILTER_H_