components/storage_monitor/removable_storage_observer.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 COMPONENTS_STORAGE_MONITOR_REMOVABLE_STORAGE_OBSERVER_H_
   6 #define COMPONENTS_STORAGE_MONITOR_REMOVABLE_STORAGE_OBSERVER_H_
   7
   8 #include "components/storage_monitor/storage_info.h"
   9
  10 namespace storage_monitor {
  11
  12 // Clients use this class to register for event-based notifications of
  13 // removable storage devices attached to or removed from the system.
  14 class RemovableStorageObserver {
  15  public:
  16   // When a removable storage device is attached, this
  17   // event is triggered.
  18   virtual void OnRemovableStorageAttached(const StorageInfo& info) {}
  19
  20   // When a removable storage device is detached, this
  21   // event is triggered.
  22   virtual void OnRemovableStorageDetached(const StorageInfo& info) {}
  23
  24  protected:
  25   virtual ~RemovableStorageObserver() {}
  26 };
  27
  28 }  // namespace storage_monitor
  29
  30 #endif  // COMPONENTS_STORAGE_MONITOR_REMOVABLE_STORAGE_OBSERVER_H_