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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef DEVICE_BLUETOOTH_BLUETOOTH_LOCAL_GATT_CHARACTERISTIC_H_
#define DEVICE_BLUETOOTH_BLUETOOTH_LOCAL_GATT_CHARACTERISTIC_H_
#include <stdint.h>
#include <vector>
#include "device/bluetooth/bluetooth_export.h"
#include "device/bluetooth/bluetooth_gatt_characteristic.h"
#include "device/bluetooth/bluetooth_local_gatt_service.h"
#include "device/bluetooth/public/cpp/bluetooth_uuid.h"
namespace device {
// BluetoothLocalGattCharacteristic represents a local GATT characteristic. This
// class is used to represent GATT characteristics that belong to a locally
// hosted service. To achieve this, users need to specify the instance of the
// GATT service that contains this characteristic during construction.
//
// Note: We use virtual inheritance on the GATT characteristic since it will be
// inherited by platform specific versions of the GATT characteristic classes
// also. The platform specific remote GATT characteristic classes will inherit
// both this class and their GATT characteristic class, hence causing an
// inheritance diamond.
class DEVICE_BLUETOOTH_EXPORT BluetoothLocalGattCharacteristic
: public virtual BluetoothGattCharacteristic {
public:
enum NotificationStatus {
NOTIFICATION_SUCCESS = 0,
NOTIFY_PROPERTY_NOT_SET,
INDICATE_PROPERTY_NOT_SET,
SERVICE_NOT_REGISTERED,
};
BluetoothLocalGattCharacteristic(const BluetoothLocalGattCharacteristic&) =
delete;
BluetoothLocalGattCharacteristic& operator=(
const BluetoothLocalGattCharacteristic&) = delete;
~BluetoothLocalGattCharacteristic() override = default;
// Notify the remote device |device| that the value of characteristic
// |characteristic| has changed and the new value is |new_value|. |indicate|
// should be set to true if we want to use an indication instead of a
// notification. An indication waits for a response from the remote, making
// it more reliable but notifications may be faster.
virtual NotificationStatus NotifyValueChanged(
const BluetoothDevice* device,
const std::vector<uint8_t>& new_value,
bool indicate) = 0;
virtual BluetoothLocalGattService* GetService() const = 0;
virtual std::vector<BluetoothLocalGattDescriptor*> GetDescriptors() const = 0;
protected:
BluetoothLocalGattCharacteristic() = default;
};
} // namespace device
#endif // DEVICE_BLUETOOTH_BLUETOOTH_LOCAL_GATT_CHARACTERISTIC_H_
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