| /* |
| * 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: jmarantz@google.com (Joshua Marantz) |
| |
| #ifndef NET_INSTAWEB_REWRITER_PUBLIC_CSS_MOVE_TO_HEAD_FILTER_H_ |
| #define NET_INSTAWEB_REWRITER_PUBLIC_CSS_MOVE_TO_HEAD_FILTER_H_ |
| |
| #include "net/instaweb/rewriter/public/common_filter.h" |
| #include "pagespeed/kernel/base/basictypes.h" |
| #include "pagespeed/kernel/base/string.h" |
| |
| namespace net_instaweb { |
| |
| class HtmlElement; |
| class RewriteDriver; |
| class Statistics; |
| class Variable; |
| |
| // Moves all CSS <link> and <style> tags either into the bottom of the <head> |
| // or above the first <script> depending on settings. |
| class CssMoveToHeadFilter : public CommonFilter { |
| public: |
| explicit CssMoveToHeadFilter(RewriteDriver* driver); |
| virtual ~CssMoveToHeadFilter(); |
| |
| static void InitStats(Statistics* statistics); |
| |
| virtual void StartDocumentImpl(); |
| virtual void StartElementImpl(HtmlElement* element) {} |
| virtual void EndElementImpl(HtmlElement* element); |
| |
| virtual const char* Name() const { return "CssMoveToHead"; } |
| virtual void DetermineEnabled(GoogleString* disabled_reason); |
| |
| private: |
| // Should we move CSS into head? If not, we just move it above scripts. |
| bool move_css_to_head_; |
| // Should we move CSS above scripts? If not, we just move CSS to the bottom |
| // of the head element. |
| bool move_css_above_scripts_; |
| |
| HtmlElement* move_to_element_; |
| bool element_is_head_; |
| |
| Variable* css_elements_moved_; |
| |
| DISALLOW_COPY_AND_ASSIGN(CssMoveToHeadFilter); |
| }; |
| |
| } // namespace net_instaweb |
| |
| #endif // NET_INSTAWEB_REWRITER_PUBLIC_CSS_MOVE_TO_HEAD_FILTER_H_ |
