components/proximity_auth/proximity_monitor_observer.h

   1 // Copyright 2015 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_PROXIMITY_AUTH_PROXIMITY_MONITOR_OBSERVER_H
   6 #define COMPONENTS_PROXIMITY_AUTH_PROXIMITY_MONITOR_OBSERVER_H
   7
   8 namespace proximity_auth {
   9
  10 // The observer interface for the ProximityMonitor class.
  11 class ProximityMonitorObserver {
  12  public:
  13   virtual ~ProximityMonitorObserver() {}
  14
  15   // Callback to be called when the proximity state of the remote device
  16   // changes.
  17   virtual void OnProximityStateChanged() = 0;
  18 };
  19
  20 }  // namespace proximity_auth
  21
  22 #endif  // COMPONENTS_PROXIMITY_AUTH_PROXIMITY_MONITOR_OBSERVER_H