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      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_
     31