src/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 FileChange;
  29 class ResourceEntry;
  30
  31 namespace internal {
  32 class ResourceMetadata;
  33 }  // namespace internal
  34
  35 namespace file_system {
  36
  37 class OperationDelegate;
  38
  39 // This class encapsulates the drive Move function.  It is responsible for
  40 // updating the local metadata entry.
  41 class MoveOperation {
  42  public:
  43   MoveOperation(base::SequencedTaskRunner* blocking_task_runner,
  44                 OperationDelegate* delegate,
  45                 internal::ResourceMetadata* metadata);
  46   ~MoveOperation();
  47
  48   // Performs the move operation on the file at drive path |src_file_path|
  49   // with a target of |dest_file_path|.
  50   // Invokes |callback| when finished with the result of the operation.
  51   // |callback| must not be null.
  52   void Move(const base::FilePath& src_file_path,
  53             const base::FilePath& dest_file_path,
  54             const FileOperationCallback& callback);
  55
  56  private:
  57   // Part of Move(). Called after updating the local state.
  58   void MoveAfterUpdateLocalState(const FileOperationCallback& callback,
  59                                  const FileChange* changed_file,
  60                                  const std::string* local_id,
  61                                  FileError error);
  62
  63   scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
  64   OperationDelegate* delegate_;
  65   internal::ResourceMetadata* metadata_;
  66
  67   // Note: This should remain the last member so it'll be destroyed and
  68   // invalidate the weak pointers before any other members are destroyed.
  69   base::WeakPtrFactory<MoveOperation> weak_ptr_factory_;
  70   DISALLOW_COPY_AND_ASSIGN(MoveOperation);
  71 };
  72
  73 }  // namespace file_system
  74 }  // namespace drive
  75
  76 #endif  // CHROME_BROWSER_CHROMEOS_DRIVE_FILE_SYSTEM_MOVE_OPERATION_H_