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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef DEVICE_BLUETOOTH_BLUETOOTH_GATT_NOTIFY_SESSION_H_ | 5 #ifndef DEVICE_BLUETOOTH_BLUETOOTH_GATT_NOTIFY_SESSION_H_ |
6 #define DEVICE_BLUETOOTH_BLUETOOTH_GATT_NOTIFY_SESSION_H_ | 6 #define DEVICE_BLUETOOTH_BLUETOOTH_GATT_NOTIFY_SESSION_H_ |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 | 9 |
10 #include "base/callback.h" | 10 #include "base/callback.h" |
11 #include "base/macros.h" | 11 #include "base/macros.h" |
12 #include "base/memory/weak_ptr.h" | |
13 #include "device/bluetooth/bluetooth_export.h" | 12 #include "device/bluetooth/bluetooth_export.h" |
14 | 13 |
15 namespace device { | 14 namespace device { |
16 | 15 |
17 class BluetoothRemoteGattCharacteristic; | |
18 | |
19 // A BluetoothGattNotifySession represents an active session for listening | 16 // A BluetoothGattNotifySession represents an active session for listening |
20 // to value updates from GATT characteristics that support notifications and/or | 17 // to value updates from GATT characteristics that support notifications and/or |
21 // indications. Instances are obtained by calling | 18 // indications. Instances are obtained by calling |
22 // BluetoothRemoteGattCharacteristic::StartNotifySession. | 19 // BluetoothRemoteGattCharacteristic::StartNotifySession. |
23 class DEVICE_BLUETOOTH_EXPORT BluetoothGattNotifySession { | 20 class DEVICE_BLUETOOTH_EXPORT BluetoothGattNotifySession { |
24 public: | 21 public: |
25 explicit BluetoothGattNotifySession( | |
26 base::WeakPtr<BluetoothRemoteGattCharacteristic> characteristic); | |
27 | |
28 // Destructor automatically stops this session. | 22 // Destructor automatically stops this session. |
29 virtual ~BluetoothGattNotifySession(); | 23 virtual ~BluetoothGattNotifySession(); |
30 | 24 |
31 // Returns the identifier of the associated characteristic. | 25 // Returns the identifier of the associated characteristic. |
32 virtual std::string GetCharacteristicIdentifier() const; | 26 virtual std::string GetCharacteristicIdentifier() const = 0; |
33 | 27 |
34 // Returns the associated characteristic. This function will return nullptr | 28 // Returns true if this session is active. |
35 // if the associated characteristic is deleted. | 29 virtual bool IsActive() = 0; |
36 virtual BluetoothRemoteGattCharacteristic* GetCharacteristic() const; | |
37 | |
38 // Returns true if this session is active. Notify sessions are active from | |
39 // the time of creation, until they have been stopped, either explicitly, or | |
40 // because the remote device disconnects. | |
41 virtual bool IsActive(); | |
42 | 30 |
43 // Stops this session and calls |callback| upon completion. This won't | 31 // Stops this session and calls |callback| upon completion. This won't |
44 // necessarily stop value updates from the characteristic -- since updates | 32 // necessarily stop value updates from the characteristic -- since updates |
45 // are shared among BluetoothGattNotifySession instances -- but it will | 33 // are shared among BluetoothGattNotifySession instances -- but it will |
46 // terminate this session. | 34 // terminate this session. |
47 virtual void Stop(const base::Closure& callback); | 35 virtual void Stop(const base::Closure& callback) = 0; |
| 36 |
| 37 protected: |
| 38 BluetoothGattNotifySession(); |
48 | 39 |
49 private: | 40 private: |
50 // The associated characteristic. | |
51 base::WeakPtr<BluetoothRemoteGattCharacteristic> characteristic_; | |
52 std::string characteristic_id_; | |
53 bool active_; | |
54 | |
55 DISALLOW_COPY_AND_ASSIGN(BluetoothGattNotifySession); | 41 DISALLOW_COPY_AND_ASSIGN(BluetoothGattNotifySession); |
56 }; | 42 }; |
57 | 43 |
58 } // namespace device | 44 } // namespace device |
59 | 45 |
60 #endif // DEVICE_BLUETOOTH_BLUETOOTH_GATT_NOTIFY_SESSION_H_ | 46 #endif // DEVICE_BLUETOOTH_BLUETOOTH_GATT_NOTIFY_SESSION_H_ |
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