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
|
/*
* 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 DOMFileSystem_h
#define DOMFileSystem_h
#if ENABLE(FILE_SYSTEM)
#include "ActiveDOMObject.h"
#include "DOMFileSystemBase.h"
#include "ScriptExecutionContext.h"
namespace WebCore {
class DirectoryEntry;
class File;
class FileCallback;
class FileEntry;
class FileWriterCallback;
class DOMFileSystem : public DOMFileSystemBase, public ActiveDOMObject {
public:
static PassRefPtr<DOMFileSystem> create(ScriptExecutionContext*, const String& name, FileSystemType, const KURL& rootURL, PassOwnPtr<AsyncFileSystem>);
// Creates a new isolated file system for the given filesystemId.
static PassRefPtr<DOMFileSystem> createIsolatedFileSystem(ScriptExecutionContext*, const String& filesystemId);
PassRefPtr<DirectoryEntry> root();
// ActiveDOMObject methods.
virtual void stop();
virtual bool hasPendingActivity() const;
virtual void contextDestroyed();
void createWriter(const FileEntry*, PassRefPtr<FileWriterCallback>, PassRefPtr<ErrorCallback>);
void createFile(const FileEntry*, PassRefPtr<FileCallback>, PassRefPtr<ErrorCallback>);
// Schedule a callback. This should not cross threads (should be called on the same context thread).
// FIXME: move this to a more generic place.
template <typename CB, typename CBArg>
static void scheduleCallback(ScriptExecutionContext*, PassRefPtr<CB>, PassRefPtr<CBArg>);
template <typename CB, typename CBArg>
void scheduleCallback(PassRefPtr<CB> callback, PassRefPtr<CBArg> callbackArg)
{
scheduleCallback(scriptExecutionContext(), callback, callbackArg);
}
private:
DOMFileSystem(ScriptExecutionContext*, const String& name, FileSystemType, const KURL& rootURL, PassOwnPtr<AsyncFileSystem>);
// A helper template to schedule a callback task.
template <typename CB, typename CBArg>
class DispatchCallbackTask : public ScriptExecutionContext::Task {
public:
DispatchCallbackTask(PassRefPtr<CB> callback, PassRefPtr<CBArg> arg)
: m_callback(callback)
, m_callbackArg(arg)
{
}
virtual void performTask(ScriptExecutionContext*)
{
m_callback->handleEvent(m_callbackArg.get());
}
private:
RefPtr<CB> m_callback;
RefPtr<CBArg> m_callbackArg;
};
};
template <typename CB, typename CBArg>
void DOMFileSystem::scheduleCallback(ScriptExecutionContext* scriptExecutionContext, PassRefPtr<CB> callback, PassRefPtr<CBArg> arg)
{
ASSERT(scriptExecutionContext->isContextThread());
if (callback)
scriptExecutionContext->postTask(adoptPtr(new DispatchCallbackTask<CB, CBArg>(callback, arg)));
}
} // namespace
#endif // ENABLE(FILE_SYSTEM)
#endif // DOMFileSystem_h
|
