1/*
2 * (C) 1999-2003 Lars Knoll (knoll@kde.org)
3 * Copyright (C) 2004, 2005, 2006, 2008, 2012 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 "CSSValue.h"
25#include <wtf/RefPtr.h>
26
27namespace WebCore {
28
29class CachedResourceLoader;
30class Element;
31class StyleCachedImage;
32class StyleImage;
33class RenderObject;
34
35class CSSImageValue : public CSSValue {
36public:
37    static PassRefPtr<CSSImageValue> create(const String& url) { return adoptRef(new CSSImageValue(url)); }
38    static PassRefPtr<CSSImageValue> create(const String& url, StyleImage* image) { return adoptRef(new CSSImageValue(url, image)); }
39    ~CSSImageValue();
40
41    StyleCachedImage* cachedImage(CachedResourceLoader*);
42    // Returns a StyleCachedImage if the image is cached already, otherwise a StylePendingImage.
43    StyleImage* cachedOrPendingImage();
44
45    const String& url() { return m_url; }
46
47    String customCssText() const;
48
49    PassRefPtr<CSSValue> cloneForCSSOM() const;
50
51    bool hasFailedOrCanceledSubresources() const;
52
53    bool equals(const CSSImageValue&) const;
54
55    bool knownToBeOpaque(const RenderObject*) const;
56
57    void setInitiator(const AtomicString& name) { m_initiatorName = name; }
58
59private:
60    explicit CSSImageValue(const String& url);
61    CSSImageValue(const String& url, StyleImage*);
62    void detachPendingImage();
63
64    String m_url;
65    RefPtr<StyleImage> m_image;
66    bool m_accessedImage;
67    AtomicString m_initiatorName;
68};
69
70} // namespace WebCore
71
72#endif // CSSImageValue_h
73