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

   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_CHROMEOS_DRIVE_FILE_SYSTEM_TOUCH_OPERATION_H_
   6 #define CHROME_BROWSER_CHROMEOS_DRIVE_FILE_SYSTEM_TOUCH_OPERATION_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/memory/ref_counted.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "base/memory/weak_ptr.h"
  12 #include "chrome/browser/chromeos/drive/file_errors.h"
  13 #include "google_apis/drive/gdata_errorcode.h"
  14
  15 namespace base {
  16 class FilePath;
  17 class SequencedTaskRunner;
  18 class Time;
  19 }  // namespace base
  20
  21 namespace google_apis {
  22 class ResourceEntry;
  23 }  // namespace google_apis
  24
  25 namespace drive {
  26 namespace internal {
  27 class ResourceMetadata;
  28 }  // namespace internal
  29
  30 class ResourceEntry;
  31
  32 namespace file_system {
  33
  34 class OperationObserver;
  35
  36 class TouchOperation {
  37  public:
  38   TouchOperation(base::SequencedTaskRunner* blocking_task_runner,
  39                  OperationObserver* observer,
  40                  internal::ResourceMetadata* metadata);
  41   ~TouchOperation();
  42
  43   // Touches the file by updating last access time and last modified time.
  44   // Upon completion, invokes |callback|.
  45   // |last_access_time|, |last_modified_time| and |callback| must not be null.
  46   void TouchFile(const base::FilePath& file_path,
  47                  const base::Time& last_access_time,
  48                  const base::Time& last_modified_time,
  49                  const FileOperationCallback& callback);
  50
  51  private:
  52   // Part of TouchFile(). Runs after updating the local state.
  53   void TouchFileAfterUpdateLocalState(const base::FilePath& file_path,
  54                                       const FileOperationCallback& callback,
  55                                       const std::string* local_id,
  56                                       FileError error);
  57
  58   scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
  59   OperationObserver* observer_;
  60   internal::ResourceMetadata* metadata_;
  61
  62   // Note: This should remain the last member so it'll be destroyed and
  63   // invalidate the weak pointers before any other members are destroyed.
  64   base::WeakPtrFactory<TouchOperation> weak_ptr_factory_;
  65   DISALLOW_COPY_AND_ASSIGN(TouchOperation);
  66 };
  67
  68 }  // namespace file_system
  69 }  // namespace drive
  70
  71 #endif  // CHROME_BROWSER_CHROMEOS_DRIVE_FILE_SYSTEM_TOUCH_OPERATION_H_