chrome/browser/chromeos/drive/file_system/move_operation.h

   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
  17 namespace base {
  18 class FilePath;
  19 class SequencedTaskRunner;
  20 }  // namespace base
  21
  22 namespace google_apis {
  23 class ResourceEntry;
  24 }  // namespace google_apis
  25
  26 namespace drive {
  27
  28 class ResourceEntry;
  29
  30 namespace internal {
  31 class ResourceMetadata;
  32 }  // namespace internal
  33
  34 namespace file_system {
  35
  36 class OperationObserver;
  37
  38 // This class encapsulates the drive Move function.  It is responsible for
  39 // updating the local metadata entry.
  40 class 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_