Page Speed Optimization Libraries  1.7.30.3
net/instaweb/rewriter/public/fix_reflow_filter.h
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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_FIX_REFLOW_FILTER_H_
00020 #define NET_INSTAWEB_REWRITER_PUBLIC_FIX_REFLOW_FILTER_H_
00021 
00022 #include "base/macros.h"
00023 #include "net/instaweb/htmlparse/public/empty_html_filter.h"
00024 #include "net/instaweb/util/public/string.h"
00025 #include "net/instaweb/util/public/string_util.h"
00026 #include "util/hash/hash.h"
00027 
00028 namespace net_instaweb {
00029 
00030 class HtmlElement;
00031 class RewriteDriver;
00032 
00035 class FixReflowFilter : public EmptyHtmlFilter {
00036  public:
00037   static const char kElementRenderedHeightPropertyName[];
00038 
00039   explicit FixReflowFilter(RewriteDriver* driver);
00040   virtual ~FixReflowFilter();
00041 
00042   virtual void DetermineEnabled();
00043   virtual void StartDocument();
00044   virtual void StartElement(HtmlElement* element);
00045 
00046   virtual const char* Name() const {
00047     return "FixReflowFilter";
00048   }
00049 
00050  private:
00051   typedef StringStringMap ElementHeightMap;
00052   ElementHeightMap element_height_map_;
00053 
00055   RewriteDriver* rewrite_driver_;
00056 
00057   DISALLOW_COPY_AND_ASSIGN(FixReflowFilter);
00058 };
00059 
00060 }  
00061 
00062 #endif  ///< NET_INSTAWEB_REWRITER_PUBLIC_FIX_REFLOW_FILTER_H_
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