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 SigninManagerWrapper;
  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 SigninManagerWrapper* signin,
  27                            base::Closure start_backup,
  28                            base::Closure start_rollback);
  29   ~BackupRollbackController();
  30
  31   // Post task to run |start_backup_| if conditions are met. Return true if
  32   // task is posted, false otherwise.
  33   bool StartBackup();
  34
  35   // Post task to run |start_rollback_| if conditions are met. Return true if
  36   // task is posted, false otherwise.
  37   bool StartRollback();
  38
  39   // Update rollback preference to indicate rollback is needed.
  40   void OnRollbackReceived();
  41
  42   // Update rollback preference to indicate rollback is finished.
  43   void OnRollbackDone();
  44
  45   // Return true if platform supports backup and backup is enabled.
  46   static bool IsBackupEnabled();
  47
  48  private:
  49   sync_driver::SyncPrefs* sync_prefs_;
  50
  51   // Use SigninManagerWrapper instead of SigninManagerBase so that
  52   // supervised users are treated like regular signed-in users.
  53   const SigninManagerWrapper* signin_;
  54
  55   base::Closure start_backup_;
  56   base::Closure start_rollback_;
  57
  58   DISALLOW_COPY_AND_ASSIGN(BackupRollbackController);
  59 };
  60
  61 }  // namespace browser_sync
  62
  63 #endif  // CHROME_BROWSER_SYNC_BACKUP_ROLLBACK_CONTROLLER_H_