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 "core/css/CSSValue.h"
25#include "core/fetch/ResourceFetcher.h"
26#include "wtf/RefPtr.h"
27
28namespace WebCore {
29
30class Element;
31class StyleFetchedImage;
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    StyleFetchedImage* cachedImage(ResourceFetcher*, const ResourceLoaderOptions&, CORSEnabled);
42    StyleFetchedImage* cachedImage(ResourceFetcher* fetcher) { return cachedImage(fetcher, ResourceFetcher::defaultResourceOptions(), NotCORSEnabled); }
43    // Returns a StyleFetchedImage if the image is cached already, otherwise a StylePendingImage.
44    StyleImage* cachedOrPendingImage();
45
46    const String& url() { return m_url; }
47
48    String customCSSText() const;
49
50    PassRefPtr<CSSValue> cloneForCSSOM() const;
51
52    bool hasFailedOrCanceledSubresources() const;
53
54    bool equals(const CSSImageValue&) const;
55
56    bool knownToBeOpaque(const RenderObject*) const;
57
58    void setInitiator(const AtomicString& name) { m_initiatorName = name; }
59
60private:
61    explicit CSSImageValue(const String& url);
62    CSSImageValue(const String& url, StyleImage*);
63
64    String m_url;
65    RefPtr<StyleImage> m_image;
66    bool m_accessedImage;
67    AtomicString m_initiatorName;
68};
69
70DEFINE_CSS_VALUE_TYPE_CASTS(CSSImageValue, isImageValue());
71
72} // namespace WebCore
73
74#endif // CSSImageValue_h
75