chrome/browser/sync/backup_rollback_controller.h

   1 // Copyright 2014 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_BACKUP_ROLLBACK_CONTROLLER_H_
   6 #define CHROME_BROWSER_SYNC_BACKUP_ROLLBACK_CONTROLLER_H_
   7
   8 #include "base/callback.h"
   9 #include "base/memory/weak_ptr.h"
  10
  11 class ManagedUserSigninManagerWrapper;
  12
  13 namespace sync_driver {
  14 class SyncPrefs;
  15 }
  16
  17 namespace browser_sync {
  18
  19 // BackupRollbackController takes two closures for starting backup/rollback
  20 // process. It calls the closures according to user's signin status or
  21 // received rollback command. Backup is not run when user signed in, even when
  22 // sync is not running.
  23 class BackupRollbackController {
  24  public:
  25   BackupRollbackController(sync_driver::SyncPrefs* sync_prefs,
  26                            const ManagedUserSigninManagerWrapper* signin,
  27                            base::Closure start_backup,
  28                            base::Closure start_rollback);
  29   ~BackupRollbackController();
  30
  31   // Check to see whether to start backup/rollback. |delay| specifies the time
  32   // to wait before checking.
  33   void Start(base::TimeDelta delay);
  34
  35   // Update rollback preference to indicate rollback is needed.
  36   void OnRollbackReceived();
  37
  38   // Update rollback preference to indicate rollback is finished.
  39   void OnRollbackDone();
  40
  41  private:
  42   // Check signin status and rollback preference and start backup/rollback
  43   // accordingly.
  44   void TryStart();
  45
  46   sync_driver::SyncPrefs* sync_prefs_;
  47
  48   // Use ManagedUserSigninManagerWrapper instead of SigninManagerBase because
  49   // SigninManagerBase could return non-empty user name for managed user, which
  50   // would cause backup to trumpet normal sync for managed user.
  51   const ManagedUserSigninManagerWrapper* signin_;
  52
  53   base::Closure start_backup_;
  54   base::Closure start_rollback_;
  55   base::WeakPtrFactory<BackupRollbackController> weak_ptr_factory_;
  56
  57   DISALLOW_COPY_AND_ASSIGN(BackupRollbackController);
  58 };
  59
  60 }  // namespace browser_sync
  61
  62 #endif  // CHROME_BROWSER_SYNC_BACKUP_ROLLBACK_CONTROLLER_H_