1 /* 2 * (C) 1999-2003 Lars Knoll (knoll (at) 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 CachedResourceLoader; 31 class StyleCachedImage; 32 class StyleImage; 33 34 class CSSImageValue : public CSSPrimitiveValue, private CachedResourceClient { 35 WTF_MAKE_FAST_ALLOCATED; 36 public: 37 static PassRefPtr<CSSImageValue> create() { return adoptRef(new CSSImageValue); } 38 static PassRefPtr<CSSImageValue> create(const String& url) { return adoptRef(new CSSImageValue(url)); } 39 virtual ~CSSImageValue(); 40 41 virtual StyleCachedImage* cachedImage(CachedResourceLoader*); 42 // Returns a StyleCachedImage if the image is cached already, otherwise a StylePendingImage. 43 StyleImage* cachedOrPendingImage(); 44 45 protected: 46 CSSImageValue(const String& url); 47 48 StyleCachedImage* cachedImage(CachedResourceLoader*, const String& url); 49 String cachedImageURL(); 50 void clearCachedImage(); 51 52 private: 53 CSSImageValue(); 54 virtual bool isImageValue() const { return true; } 55 56 RefPtr<StyleImage> m_image; 57 bool m_accessedImage; 58 }; 59 60 } // namespace WebCore 61 62 #endif // CSSImageValue_h 63
