move_operation.h revision a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7 
1// Copyright (c) 2012 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_CHROMEOS_DRIVE_FILE_SYSTEM_MOVE_OPERATION_H_
6#define CHROME_BROWSER_CHROMEOS_DRIVE_FILE_SYSTEM_MOVE_OPERATION_H_
7
8#include <set>
9
10#include "base/basictypes.h"
11#include "base/memory/ref_counted.h"
12#include "base/memory/scoped_ptr.h"
13#include "base/memory/weak_ptr.h"
14#include "chrome/browser/chromeos/drive/file_errors.h"
15#include "google_apis/drive/gdata_errorcode.h"
16
17namespace base {
18class FilePath;
19class SequencedTaskRunner;
20}  // namespace base
21
22namespace google_apis {
23class ResourceEntry;
24}  // namespace google_apis
25
26namespace drive {
27
28class ResourceEntry;
29
30namespace internal {
31class ResourceMetadata;
32}  // namespace internal
33
34namespace file_system {
35
36class OperationObserver;
37
38// This class encapsulates the drive Move function.  It is responsible for
39// updating the local metadata entry.
40class MoveOperation {
41 public:
42  MoveOperation(base::SequencedTaskRunner* blocking_task_runner,
43                OperationObserver* observer,
44                internal::ResourceMetadata* metadata);
45  ~MoveOperation();
46
47  // Performs the move operation on the file at drive path |src_file_path|
48  // with a target of |dest_file_path|.
49  // If |preserve_last_modified| is set to true, this tries to preserve
50  // last modified time stamp.
51  // Invokes |callback| when finished with the result of the operation.
52  // |callback| must not be null.
53  void Move(const base::FilePath& src_file_path,
54            const base::FilePath& dest_file_path,
55            bool preserve_last_modified,
56            const FileOperationCallback& callback);
57
58 private:
59  // Part of Move(). Called after updating the local state.
60  void MoveAfterUpdateLocalState(
61      const FileOperationCallback& callback,
62      const std::set<base::FilePath>* changed_directories,
63      const std::string* local_id,
64      FileError error);
65
66  scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
67  OperationObserver* observer_;
68  internal::ResourceMetadata* metadata_;
69
70  // Note: This should remain the last member so it'll be destroyed and
71  // invalidate the weak pointers before any other members are destroyed.
72  base::WeakPtrFactory<MoveOperation> weak_ptr_factory_;
73  DISALLOW_COPY_AND_ASSIGN(MoveOperation);
74};
75
76}  // namespace file_system
77}  // namespace drive
78
79#endif  // CHROME_BROWSER_CHROMEOS_DRIVE_FILE_SYSTEM_MOVE_OPERATION_H_
80