1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
|
/*
* Copyright (C) 2010 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef AsyncFileSystemCallbacks_h
#define AsyncFileSystemCallbacks_h
#include "platform/FileMetadata.h"
#include "platform/FileSystemType.h"
#include "platform/blob/BlobData.h"
#include "public/platform/WebFileWriter.h"
#include "wtf/Allocator.h"
#include "wtf/Assertions.h"
#include "wtf/Noncopyable.h"
#include "wtf/text/WTFString.h"
#include <memory>
namespace blink {
class PLATFORM_EXPORT AsyncFileSystemCallbacks {
USING_FAST_MALLOC(AsyncFileSystemCallbacks);
WTF_MAKE_NONCOPYABLE(AsyncFileSystemCallbacks);
public:
AsyncFileSystemCallbacks() : m_blockUntilCompletion(false) {}
// Called when a requested operation is completed successfully.
virtual void didSucceed() { ASSERT_NOT_REACHED(); }
// Called when a requested file system is opened.
virtual void didOpenFileSystem(const String& name, const KURL& rootURL) {
ASSERT_NOT_REACHED();
}
// Called when a filesystem URL is resolved.
virtual void didResolveURL(const String& name,
const KURL& rootURL,
FileSystemType,
const String& filePath,
bool isDirectory) {
ASSERT_NOT_REACHED();
}
// Called when a file metadata is read successfully.
virtual void didReadMetadata(const FileMetadata&) { ASSERT_NOT_REACHED(); }
// Called when a snapshot file is created successfully.
virtual void didCreateSnapshotFile(const FileMetadata&,
PassRefPtr<BlobDataHandle> snapshot) {
ASSERT_NOT_REACHED();
}
// Called when a directory entry is read.
virtual void didReadDirectoryEntry(const String& name, bool isDirectory) {
ASSERT_NOT_REACHED();
}
// Called after a chunk of directory entries have been read (i.e. indicates
// it's good time to call back to the application). If hasMore is true there
// can be more chunks.
virtual void didReadDirectoryEntries(bool hasMore) { ASSERT_NOT_REACHED(); }
// Called when an AsyncFileWrter has been created successfully.
virtual void didCreateFileWriter(std::unique_ptr<WebFileWriter>,
long long length) {
ASSERT_NOT_REACHED();
}
// Called when there was an error.
virtual void didFail(int code) = 0;
// Returns true if the caller expects that the calling thread blocks
// until completion.
virtual bool shouldBlockUntilCompletion() const {
return m_blockUntilCompletion;
}
void setShouldBlockUntilCompletion(bool flag) {
m_blockUntilCompletion = flag;
}
virtual ~AsyncFileSystemCallbacks() {}
private:
bool m_blockUntilCompletion;
};
} // namespace blink
#endif // AsyncFileSystemCallbacks_h
|
