Page Speed Optimization Libraries  1.6.29.3
net/instaweb/rewriter/public/css_inline_import_to_link_filter.h
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00001 /*
00002  * Copyright 2011 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_CSS_INLINE_IMPORT_TO_LINK_FILTER_H_
00020 #define NET_INSTAWEB_REWRITER_PUBLIC_CSS_INLINE_IMPORT_TO_LINK_FILTER_H_
00021 
00022 #include "net/instaweb/htmlparse/public/empty_html_filter.h"
00023 #include "net/instaweb/util/public/basictypes.h"
00024 
00025 namespace net_instaweb {
00026 
00027 class HtmlCharactersNode;
00028 class HtmlElement;
00029 class RewriteDriver;
00030 class Statistics;
00031 class Variable;
00032 
00038 class CssInlineImportToLinkFilter : public EmptyHtmlFilter {
00039  public:
00040   explicit CssInlineImportToLinkFilter(RewriteDriver* driver,
00041                                        Statistics* statistics);
00042   virtual ~CssInlineImportToLinkFilter();
00043 
00044   static void InitStats(Statistics* statistics);
00045 
00046   virtual void StartDocument();
00047   virtual void EndDocument();
00048 
00049   virtual void StartElement(HtmlElement* element);
00050   virtual void EndElement(HtmlElement* element);
00051 
00052   virtual void Flush();
00053 
00055   virtual void Characters(HtmlCharactersNode* characters);
00056 
00057   virtual const char* Name() const { return "InlineImportToLinkCss"; }
00058 
00059  private:
00060   void ResetState();
00061   void InlineImportToLinkStyle();
00062 
00063   RewriteDriver* driver_;
00066   HtmlElement* style_element_;
00068   HtmlCharactersNode* style_characters_;
00070   Variable* counter_;
00071 
00072   DISALLOW_COPY_AND_ASSIGN(CssInlineImportToLinkFilter);
00073 };
00074 
00075 }  
00076 
00077 #endif  ///< NET_INSTAWEB_REWRITER_PUBLIC_CSS_INLINE_IMPORT_TO_LINK_FILTER_H_
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