| /* |
| * Copyright 2013 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| // Authors: mmohabey@google.com (Megha Mohabey) |
| // rahulbansal@google.com (Rahul Bansal) |
| |
| #ifndef NET_INSTAWEB_REWRITER_PUBLIC_CACHE_HTML_FILTER_H_ |
| #define NET_INSTAWEB_REWRITER_PUBLIC_CACHE_HTML_FILTER_H_ |
| |
| #include <vector> |
| |
| #include "net/instaweb/rewriter/cache_html_info.pb.h" |
| #include "net/instaweb/rewriter/public/blink_util.h" |
| #include "net/instaweb/util/public/property_cache.h" |
| #include "pagespeed/kernel/base/basictypes.h" |
| #include "pagespeed/kernel/base/json.h" |
| #include "pagespeed/kernel/base/string.h" |
| #include "pagespeed/kernel/base/string_util.h" |
| #include "pagespeed/kernel/base/string_writer.h" |
| #include "pagespeed/kernel/html/html_writer_filter.h" |
| |
| namespace net_instaweb { |
| |
| class HtmlElement; |
| class RewriteDriver; |
| class RewriteOptions; |
| |
| // This class extracts the non cacheable panels and sends it to the client. |
| // TODO(mmohabey): Integrate with SplitFilter and send non critical JSON too. |
| class CacheHtmlFilter : public HtmlWriterFilter { |
| public: |
| explicit CacheHtmlFilter(RewriteDriver* rewrite_driver); |
| virtual ~CacheHtmlFilter(); |
| |
| virtual void StartDocument(); |
| virtual void StartElement(HtmlElement* element); |
| virtual void EndElement(HtmlElement* element); |
| virtual void EndDocument(); |
| void WriteString(StringPiece str); |
| virtual void Flush(); |
| virtual const char* Name() const { return "CacheHtmlFilter"; } |
| |
| private: |
| void SendCookies(); |
| void SendNonCacheableObject(const Json::Value& json); |
| // Produces a custom xpath relative to the body or relative to the nearest |
| // ancestor with an id (if there is one). Xpath comprises of the tag name |
| // and the id (if it exists) or the position of the elements. |
| GoogleString GetXpathOfCurrentElement(HtmlElement* element); |
| |
| RewriteDriver* rewrite_driver_; // We do not own this. |
| const RewriteOptions* rewrite_options_; // We do not own this. |
| AttributesToNonCacheableValuesMap attribute_non_cacheable_values_map_; |
| std::vector<int> panel_number_num_instances_; |
| GoogleString buffer_; |
| StringWriter string_writer_; |
| const HtmlElement* current_non_cacheable_element_; // We do not own this. |
| GoogleString current_panel_id_; |
| const PropertyCache::Cohort* cohort_; // We do not own this. |
| CacheHtmlInfo cache_html_info_; |
| bool abort_filter_; |
| std::vector<int> num_children_stack_; |
| |
| DISALLOW_COPY_AND_ASSIGN(CacheHtmlFilter); |
| }; |
| |
| } // namespace net_instaweb |
| |
| #endif // NET_INSTAWEB_REWRITER_PUBLIC_CACHE_HTML_FILTER_H_ |