File: bluetooth_low_energy_advertisement_manager_mac.h

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// Copyright 2018 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_LOW_ENERGY_ADVERTISEMENT_MANAGER_MAC_H_
#define DEVICE_BLUETOOTH_BLUETOOTH_LOW_ENERGY_ADVERTISEMENT_MANAGER_MAC_H_

#include "base/memory/scoped_refptr.h"
#include "base/task/single_thread_task_runner.h"
#include "device/bluetooth/bluetooth_advertisement_mac.h"

namespace device {

// Class used by BluetoothAdapterMac to manage LE advertisements.
// Currently, only a single concurrent BLE advertisement is supported. Future
// work will add support for multiple concurrent and rotating advertisements.
class DEVICE_BLUETOOTH_EXPORT BluetoothLowEnergyAdvertisementManagerMac {
 public:
  BluetoothLowEnergyAdvertisementManagerMac();

  BluetoothLowEnergyAdvertisementManagerMac(
      const BluetoothLowEnergyAdvertisementManagerMac&) = delete;
  BluetoothLowEnergyAdvertisementManagerMac& operator=(
      const BluetoothLowEnergyAdvertisementManagerMac&) = delete;

  ~BluetoothLowEnergyAdvertisementManagerMac();

  // Initializes the advertisement manager.
  void Init(scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner,
            CBPeripheralManager* peripheral_manager);

  // Registers a new BLE advertisement.
  void RegisterAdvertisement(
      std::unique_ptr<BluetoothAdvertisement::Data> advertisement_data,
      BluetoothAdapter::CreateAdvertisementCallback callback,
      BluetoothAdapter::AdvertisementErrorCallback error_callback);

  // Unregisters an existing BLE advertisement.
  void UnregisterAdvertisement(
      BluetoothAdvertisementMac* advertisement,
      BluetoothAdvertisement::SuccessCallback success_callback,
      BluetoothAdvertisement::ErrorCallback error_callback);

  // Called when the peripheral manager state changes.
  void OnPeripheralManagerStateChanged();

  // Called when advertisement starts with success or failure.
  void DidStartAdvertising(NSError* error);

 private:
  void StartAdvertising();

  scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner_;

  CBPeripheralManager* peripheral_manager_;

  scoped_refptr<BluetoothAdvertisementMac> active_advertisement_;
};

}  // namespace device

#endif  // DEVICE_BLUETOOTH_BLUETOOTH_LOW_ENERGY_ADVERTISEMENT_MANAGER_MAC_H_