1// Copyright (c) 2013 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_MEDIA_FILE_SYSTEM_BACKEND_H_
6#define CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_MEDIA_FILE_SYSTEM_BACKEND_H_
7
8#include "base/memory/ref_counted.h"
9#include "base/memory/scoped_ptr.h"
10#include "webkit/browser/fileapi/file_system_backend.h"
11
12namespace base {
13class SequencedTaskRunner;
14}
15
16namespace fileapi {
17class AsyncFileUtilAdapter;
18}
19
20namespace chrome {
21
22class MediaPathFilter;
23
24class DeviceMediaAsyncFileUtil;
25
26class MediaFileSystemBackend : public fileapi::FileSystemBackend {
27 public:
28  static const char kMediaTaskRunnerName[];
29
30  MediaFileSystemBackend(
31      const base::FilePath& profile_path,
32      base::SequencedTaskRunner* media_task_runner);
33  virtual ~MediaFileSystemBackend();
34
35  static bool CurrentlyOnMediaTaskRunnerThread();
36  static scoped_refptr<base::SequencedTaskRunner> MediaTaskRunner();
37
38  // FileSystemBackend implementation.
39  virtual bool CanHandleType(fileapi::FileSystemType type) const OVERRIDE;
40  virtual void Initialize(fileapi::FileSystemContext* context) OVERRIDE;
41  virtual void OpenFileSystem(
42      const GURL& origin_url,
43      fileapi::FileSystemType type,
44      fileapi::OpenFileSystemMode mode,
45      const OpenFileSystemCallback& callback) OVERRIDE;
46  virtual fileapi::FileSystemFileUtil* GetFileUtil(
47      fileapi::FileSystemType type) OVERRIDE;
48  virtual fileapi::AsyncFileUtil* GetAsyncFileUtil(
49      fileapi::FileSystemType type) OVERRIDE;
50  virtual fileapi::CopyOrMoveFileValidatorFactory*
51  GetCopyOrMoveFileValidatorFactory(
52      fileapi::FileSystemType type,
53      base::PlatformFileError* error_code) OVERRIDE;
54  virtual fileapi::FileSystemOperation* CreateFileSystemOperation(
55      const fileapi::FileSystemURL& url,
56      fileapi::FileSystemContext* context,
57      base::PlatformFileError* error_code) const OVERRIDE;
58  virtual scoped_ptr<webkit_blob::FileStreamReader> CreateFileStreamReader(
59      const fileapi::FileSystemURL& url,
60      int64 offset,
61      const base::Time& expected_modification_time,
62      fileapi::FileSystemContext* context) const OVERRIDE;
63  virtual scoped_ptr<fileapi::FileStreamWriter> CreateFileStreamWriter(
64      const fileapi::FileSystemURL& url,
65      int64 offset,
66      fileapi::FileSystemContext* context) const OVERRIDE;
67  virtual fileapi::FileSystemQuotaUtil* GetQuotaUtil() OVERRIDE;
68
69 private:
70  // Store the profile path. We need this to create temporary snapshot files.
71  const base::FilePath profile_path_;
72
73  scoped_refptr<base::SequencedTaskRunner> media_task_runner_;
74
75  scoped_ptr<MediaPathFilter> media_path_filter_;
76  scoped_ptr<fileapi::CopyOrMoveFileValidatorFactory>
77      media_copy_or_move_file_validator_factory_;
78
79  scoped_ptr<fileapi::AsyncFileUtil> native_media_file_util_;
80  scoped_ptr<DeviceMediaAsyncFileUtil> device_media_async_file_util_;
81#if defined(OS_WIN) || defined(OS_MACOSX)
82  scoped_ptr<fileapi::AsyncFileUtil> picasa_file_util_;
83  scoped_ptr<fileapi::AsyncFileUtil> itunes_file_util_;
84#endif  // defined(OS_WIN) || defined(OS_MACOSX)
85
86  DISALLOW_COPY_AND_ASSIGN(MediaFileSystemBackend);
87};
88
89}  // namespace chrome
90
91#endif  // CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_MEDIA_FILE_SYSTEM_BACKEND_H_
92