1/*
2 * Copyright (C) 2014 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef BlobDataFileReference_h
27#define BlobDataFileReference_h
28
29#include "FileSystem.h"
30#include <wtf/RefCounted.h>
31#include <wtf/text/WTFString.h>
32
33namespace WebCore {
34
35class BlobDataFileReference : public RefCounted<BlobDataFileReference> {
36public:
37    static PassRefPtr<BlobDataFileReference> create(const String& path)
38    {
39        return adoptRef(new BlobDataFileReference(path));
40    }
41
42    virtual ~BlobDataFileReference();
43
44    void startTrackingModifications();
45
46    const String& path();
47    unsigned long long size();
48    double expectedModificationTime();
49
50    virtual void prepareForFileAccess();
51    virtual void revokeFileAccess();
52
53protected:
54    BlobDataFileReference(const String& path);
55
56private:
57#if ENABLE(FILE_REPLACEMENT)
58    void generateReplacementFile();
59#endif
60
61    String m_path;
62#if ENABLE(FILE_REPLACEMENT)
63    String m_replacementPath;
64    bool m_replacementShouldBeGenerated;
65#endif
66    unsigned long long m_size;
67    double m_expectedModificationTime;
68};
69
70}
71
72#endif // BlobDataFileReference_h
73