| /* |
| * Copyright 2010 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. |
| */ |
| |
| // Author: sligocki@google.com (Shawn Ligocki) |
| |
| #ifndef NET_INSTAWEB_REWRITER_PUBLIC_CSS_OUTLINE_FILTER_H_ |
| #define NET_INSTAWEB_REWRITER_PUBLIC_CSS_OUTLINE_FILTER_H_ |
| |
| #include <cstddef> |
| |
| #include "net/instaweb/rewriter/public/common_filter.h" |
| #include "pagespeed/kernel/base/basictypes.h" |
| #include "pagespeed/kernel/base/string.h" |
| #include "pagespeed/kernel/base/string_util.h" |
| |
| namespace net_instaweb { |
| |
| class HtmlCharactersNode; |
| class HtmlElement; |
| class MessageHandler; |
| class OutputResource; |
| class RewriteDriver; |
| |
| // Filter to take explicit <style> and <script> tags and outline them to files. |
| class CssOutlineFilter : public CommonFilter { |
| public: |
| static const char kFilterId[]; |
| |
| explicit CssOutlineFilter(RewriteDriver* driver); |
| virtual ~CssOutlineFilter(); |
| |
| virtual void StartDocumentImpl(); |
| |
| virtual void StartElementImpl(HtmlElement* element); |
| virtual void EndElementImpl(HtmlElement* element); |
| |
| virtual void Flush(); |
| |
| // HTML Events we expect to be in <style> elements. |
| virtual void Characters(HtmlCharactersNode* characters); |
| |
| virtual const char* Name() const { return "OutlineCss"; } |
| |
| private: |
| bool WriteResource(const StringPiece& content, OutputResource* resource, |
| MessageHandler* handler); |
| void OutlineStyle(HtmlElement* element, const GoogleString& content); |
| |
| // The style element we are in (if it hasn't been flushed). |
| // If we are not in a style element, inline_element_ == NULL. |
| HtmlElement* inline_element_; |
| // CharactersNode to be outlined. |
| HtmlCharactersNode* inline_chars_; |
| size_t size_threshold_bytes_; |
| // HTML strings interned into a symbol table. |
| |
| DISALLOW_COPY_AND_ASSIGN(CssOutlineFilter); |
| }; |
| |
| } // namespace net_instaweb |
| |
| #endif // NET_INSTAWEB_REWRITER_PUBLIC_CSS_OUTLINE_FILTER_H_ |