WebCore/CSSImageValue.h

   1 /*
   2  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
   3  * Copyright (C) 2004, 2005, 2006, 2008 Apple Inc. All rights reserved.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Library General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Library General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Library General Public License
  16  * along with this library; see the file COPYING.LIB.  If not, write to
  17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  18  * Boston, MA 02110-1301, USA.
  19  */
  20
  21 #ifndef CSSImageValue_h
  22 #define CSSImageValue_h
  23
  24 #include "CSSPrimitiveValue.h"
  25 #include "CachedResourceClient.h"
  26 #include <wtf/RefPtr.h>
  27
  28 namespace WebCore {
  29
  30 class DocLoader;
  31 class StyleCachedImage;
  32
  33 class CSSImageValue : public CSSPrimitiveValue, private CachedResourceClient {
  34 public:
  35     static PassRefPtr<CSSImageValue> create() { return adoptRef(new CSSImageValue); }
  36     static PassRefPtr<CSSImageValue> create(const String& url) { return adoptRef(new CSSImageValue(url)); }
  37     virtual ~CSSImageValue();
  38
  39     virtual StyleCachedImage* cachedImage(DocLoader*);
  40
  41     virtual bool isImageValue() const { return true; }
  42
  43 protected:
  44     CSSImageValue(const String& url);
  45
  46     StyleCachedImage* cachedImage(DocLoader*, const String& url);
  47     String cachedImageURL();
  48     void clearCachedImage();
  49
  50 private:
  51     CSSImageValue();
  52
  53     RefPtr<StyleCachedImage> m_image;
  54     bool m_accessedImage;
  55 };
  56
  57 } // namespace WebCore
  58
  59 #endif // CSSImageValue_h