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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 CachedCSSStyleSheet_h
     27 #define CachedCSSStyleSheet_h
     28 
     29 #include "CachedResource.h"
     30 #include "TextEncoding.h"
     31 #include <wtf/Vector.h>
     32 
     33 namespace WebCore {
     34 
     35     class CachedResourceLoader;
     36     class TextResourceDecoder;
     37 
     38     class CachedCSSStyleSheet : public CachedResource {
     39     public:
     40         CachedCSSStyleSheet(const String& URL, const String& charset);
     41         virtual ~CachedCSSStyleSheet();
     42 
     43         const String sheetText(bool enforceMIMEType = true, bool* hasValidMIMEType = 0) const;
     44 
     45         virtual void didAddClient(CachedResourceClient*);
     46 
     47         virtual void allClientsRemoved();
     48 
     49         virtual void setEncoding(const String&);
     50         virtual String encoding() const;
     51         virtual void data(PassRefPtr<SharedBuffer> data, bool allDataReceived);
     52         virtual void error(CachedResource::Status);
     53 
     54         void checkNotify();
     55 
     56     private:
     57         bool canUseSheet(bool enforceMIMEType, bool* hasValidMIMEType) const;
     58         virtual PurgePriority purgePriority() const { return PurgeLast; }
     59 
     60     protected:
     61         RefPtr<TextResourceDecoder> m_decoder;
     62         String m_decodedSheetText;
     63     };
     64 
     65 }
     66 
     67 #endif
     68