Page Speed Optimization Libraries
1.5.27.2
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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_SCRIPT_TAG_SCANNER_H_ 00020 #define NET_INSTAWEB_REWRITER_PUBLIC_SCRIPT_TAG_SCANNER_H_ 00021 00022 #include "net/instaweb/htmlparse/public/html_element.h" 00023 #include "net/instaweb/util/public/basictypes.h" 00024 #include "net/instaweb/util/public/string.h" 00025 #include "net/instaweb/util/public/string_util.h" 00026 00027 namespace net_instaweb { 00028 class HtmlParse; 00029 00030 class ScriptTagScanner { 00031 public: 00032 enum ScriptClassification { 00033 kNonScript, 00034 kUnknownScript, 00035 kJavaScript 00036 }; 00037 00039 enum ExecutionModeFlags { 00040 kExecuteSync = 0, 00041 kExecuteDefer = 1, 00042 kExecuteAsync = 2, 00043 kExecuteForEvent = 4 00044 00045 00046 }; 00047 00048 explicit ScriptTagScanner(HtmlParse* html_parse); 00049 00054 ScriptClassification ParseScriptElement(HtmlElement* element, 00055 HtmlElement::Attribute** src); 00056 00060 int ExecutionMode(const HtmlElement* element) const; 00061 00062 private: 00064 static GoogleString Normalized(const StringPiece& str); 00065 00066 bool IsJsMime(const GoogleString& type_str); 00067 00068 DISALLOW_COPY_AND_ASSIGN(ScriptTagScanner); 00069 }; 00070 00071 } 00072 00073 #endif ///< NET_INSTAWEB_REWRITER_PUBLIC_SCRIPT_TAG_SCANNER_H_