root_delete_helper.h revision 5d1f7b1de12d16ceb2c938c56701a3e8bfa558f7 
1// Copyright 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_SYNC_FILE_SYSTEM_LOCAL_ROOT_DELETE_HELPER_H_
6#define CHROME_BROWSER_SYNC_FILE_SYSTEM_LOCAL_ROOT_DELETE_HELPER_H_
7
8#include "base/basictypes.h"
9#include "base/callback.h"
10#include "base/files/file.h"
11#include "base/memory/ref_counted.h"
12#include "base/memory/weak_ptr.h"
13#include "webkit/browser/fileapi/file_system_url.h"
14
15class GURL;
16
17namespace fileapi {
18class FileSystemContext;
19}
20
21namespace sync_file_system {
22
23class LocalFileSyncStatus;
24
25// A helper class to delete the root directory of a given Sync FileSystem.
26// This could happen when AppRoot (or SyncRoot) is deleted by remote operation,
27// and we want to delete all local files + all pending local changes in this
28// case.
29//
30// Expected to be called on and will callback on IO thread.
31class RootDeleteHelper {
32 public:
33  typedef base::Callback<void(base::File::Error)> FileStatusCallback;
34
35  RootDeleteHelper(fileapi::FileSystemContext* file_system_context,
36                   LocalFileSyncStatus* sync_status,
37                   const fileapi::FileSystemURL& url,
38                   const FileStatusCallback& callback);
39  ~RootDeleteHelper();
40
41  void Run();
42
43 private:
44  void DidDeleteFileSystem(base::File::Error error);
45  void DidResetFileChangeTracker();
46  void DidOpenFileSystem(const GURL& root,
47                         const std::string& name,
48                         base::File::Error error);
49
50  scoped_refptr<fileapi::FileSystemContext> file_system_context_;
51  const fileapi::FileSystemURL url_;
52  FileStatusCallback callback_;
53
54  // Not owned; owner of this instance owns it.
55  LocalFileSyncStatus* sync_status_;
56
57  base::WeakPtrFactory<RootDeleteHelper> weak_factory_;
58
59  DISALLOW_COPY_AND_ASSIGN(RootDeleteHelper);
60};
61
62}  // namespace sync_file_system
63
64#endif  // CHROME_BROWSER_SYNC_FILE_SYSTEM_LOCAL_ROOT_DELETE_HELPER_H_
65