Page Speed Optimization Libraries
1.6.29.3
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00001 /* 00002 * Copyright 2013 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_SPLIT_HTML_HELPER_FILTER_H_ 00020 #define NET_INSTAWEB_REWRITER_PUBLIC_SPLIT_HTML_HELPER_FILTER_H_ 00021 00022 #include <vector> 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/json.h" 00028 #include "net/instaweb/util/public/scoped_ptr.h" 00029 #include "net/instaweb/util/public/string.h" 00030 #include "pagespeed/kernel/base/json_writer.h" 00031 00032 namespace net_instaweb { 00033 00034 class HtmlElement; 00035 class RewriteDriver; 00036 class SplitHtmlConfig; 00037 class XpathUnit; 00038 00049 class SplitHtmlHelperFilter : public CommonFilter { 00050 public: 00051 explicit SplitHtmlHelperFilter(RewriteDriver* rewrite_driver); 00052 virtual ~SplitHtmlHelperFilter(); 00053 00054 virtual void StartDocumentImpl(); 00055 virtual void EndDocument(); 00056 00057 virtual void StartElementImpl(HtmlElement* element); 00058 virtual void EndElementImpl(HtmlElement* element); 00059 00060 virtual const char* Name() const { return "SplitHtmlHelperFilter"; } 00061 00062 private: 00064 GoogleString MatchPanelIdForElement(HtmlElement* element); 00065 00067 bool IsElementParentOfCurrentPanel(HtmlElement* element); 00068 00071 void EndPanelInstance(); 00072 00074 void StartPanelInstance(HtmlElement* element, const GoogleString& panelid); 00075 00078 bool IsEndMarkerForCurrentPanel(HtmlElement* element); 00079 00081 void AppendJsonData(Json::Value* dictionary, const Json::Value& dict); 00082 00083 bool ElementMatchesXpath(const HtmlElement* element, 00084 const std::vector<XpathUnit>& xpath_units); 00085 00086 scoped_ptr<SplitHtmlConfig> config_; 00087 std::vector<ElementJsonPair> element_json_stack_; 00088 std::vector<int> num_children_stack_; 00089 GoogleString current_panel_id_; 00090 bool disable_filter_; 00091 bool inside_pagespeed_no_defer_script_; 00092 HtmlElement* current_panel_parent_element_; 00093 ScriptTagScanner script_tag_scanner_; 00094 00095 DISALLOW_COPY_AND_ASSIGN(SplitHtmlHelperFilter); 00096 }; 00097 00098 } 00099 00100 #endif ///< NET_INSTAWEB_REWRITER_PUBLIC_SPLIT_HTML_HELPER_FILTER_H_