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      1 /*
      2     Copyright (C) 1998 Lars Knoll (knoll (at) mpi-hd.mpg.de)
      3     Copyright (C) 2001 Dirk Mueller <mueller (at) kde.org>
      4     Copyright (C) 2006 Samuel Weinig (sam.weinig (at) gmail.com)
      5     Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
      6 
      7     This library is free software; you can redistribute it and/or
      8     modify it under the terms of the GNU Library General Public
      9     License as published by the Free Software Foundation; either
     10     version 2 of the License, or (at your option) any later version.
     11 
     12     This library is distributed in the hope that it will be useful,
     13     but WITHOUT ANY WARRANTY; without even the implied warranty of
     14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     15     Library General Public License for more details.
     16 
     17     You should have received a copy of the GNU Library General Public License
     18     along with this library; see the file COPYING.LIB.  If not, write to
     19     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     20     Boston, MA 02110-1301, USA.
     21 
     22     This class provides all functionality needed for loading images, style sheets and html
     23     pages from the web. It has a memory cache for these objects.
     24 */
     25 
     26 #ifndef CSSStyleSheetResource_h
     27 #define CSSStyleSheetResource_h
     28 
     29 #include "core/loader/cache/Resource.h"
     30 
     31 namespace WebCore {
     32 
     33 class ResourceClient;
     34 class StyleSheetContents;
     35 class TextResourceDecoder;
     36 struct CSSParserContext;
     37 
     38 class CSSStyleSheetResource : public Resource {
     39 public:
     40     CSSStyleSheetResource(const ResourceRequest&, const String& charset);
     41     virtual ~CSSStyleSheetResource();
     42 
     43     const String sheetText(bool enforceMIMEType = true, bool* hasValidMIMEType = 0) const;
     44 
     45     virtual void didAddClient(ResourceClient*);
     46     virtual void setEncoding(const String&);
     47     virtual String encoding() const;
     48     virtual void destroyDecodedData() OVERRIDE;
     49 
     50     PassRefPtr<StyleSheetContents> restoreParsedStyleSheet(const CSSParserContext&);
     51     void saveParsedStyleSheet(PassRefPtr<StyleSheetContents>);
     52 
     53 private:
     54     bool canUseSheet(bool enforceMIMEType, bool* hasValidMIMEType) const;
     55 
     56 protected:
     57     virtual void checkNotify();
     58 
     59     RefPtr<TextResourceDecoder> m_decoder;
     60     String m_decodedSheetText;
     61 
     62     RefPtr<StyleSheetContents> m_parsedStyleSheetCache;
     63 };
     64 
     65 }
     66 
     67 #endif
     68