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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 DEVICE_BLUETOOTH_BLUETOOTH_GATT_NOTIFY_SESSION_H_
      6 #define DEVICE_BLUETOOTH_BLUETOOTH_GATT_NOTIFY_SESSION_H_
      7 
      8 #include <string>
      9 
     10 #include "base/callback.h"
     11 
     12 namespace device {
     13 
     14 // A BluetoothGattNotifySession represents an active session for listening
     15 // to value updates from GATT characteristics that support notifications and/or
     16 // indications. Instances are obtained by calling
     17 // BluetoothGattCharacteristic::StartNotifySession.
     18 class BluetoothGattNotifySession {
     19  public:
     20   // Destructor autmatically stops this session.
     21   virtual ~BluetoothGattNotifySession();
     22 
     23   // Returns the identifier of the associated characteristic.
     24   virtual std::string GetCharacteristicIdentifier() const = 0;
     25 
     26   // Returns true if this session is active.
     27   virtual bool IsActive() = 0;
     28 
     29   // Stops this session and calls |callback| upon completion. This won't
     30   // necessarily stop value updates from the characteristic -- since updates
     31   // are shared among BluetoothGattNotifySession instances -- but it will
     32   // terminate this session.
     33   virtual void Stop(const base::Closure& callback) = 0;
     34 
     35  protected:
     36   BluetoothGattNotifySession();
     37 
     38  private:
     39   DISALLOW_COPY_AND_ASSIGN(BluetoothGattNotifySession);
     40 };
     41 
     42 }  // namespace device
     43 
     44 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_GATT_NOTIFY_SESSION_H_
     45