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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef DEVICE_BLUETOOTH_BLUETOOTH_REMOTE_GATT_SERVICE_WIN_H_
#define DEVICE_BLUETOOTH_BLUETOOTH_REMOTE_GATT_SERVICE_WIN_H_
#include <memory>
#include <set>
#include <string>
#include <vector>
#include "base/files/file.h"
#include "base/memory/weak_ptr.h"
#include "base/sequenced_task_runner.h"
#include "device/bluetooth/bluetooth_low_energy_defs_win.h"
#include "device/bluetooth/bluetooth_remote_gatt_service.h"
namespace device {
class BluetoothAdapterWin;
class BluetoothDeviceWin;
class BluetoothRemoteGattCharacteristicWin;
class BluetoothTaskManagerWin;
// The BluetoothRemoteGattServiceWin class implements BluetoothRemoteGattService
// for remote GATT services on Windows 8 and later.
class DEVICE_BLUETOOTH_EXPORT BluetoothRemoteGattServiceWin
: public BluetoothRemoteGattService {
public:
BluetoothRemoteGattServiceWin(
BluetoothDeviceWin* device,
base::FilePath service_path,
BluetoothUUID service_uuid,
uint16_t service_attribute_handle,
bool is_primary,
BluetoothRemoteGattServiceWin* parent_service,
scoped_refptr<base::SequencedTaskRunner> ui_task_runner);
~BluetoothRemoteGattServiceWin() override;
// Override BluetoothRemoteGattService interfaces.
std::string GetIdentifier() const override;
BluetoothUUID GetUUID() const override;
bool IsPrimary() const override;
BluetoothDevice* GetDevice() const override;
std::vector<BluetoothRemoteGattService*> GetIncludedServices() const override;
// Notify |characteristic| discovery complete, |characteristic| is the
// included characteritic of this service.
void GattCharacteristicDiscoveryComplete(
BluetoothRemoteGattCharacteristicWin* characteristic);
// Update included services and characteristics.
void Update();
uint16_t GetAttributeHandle() const { return service_attribute_handle_; }
base::FilePath GetServicePath() { return service_path_; }
BluetoothAdapterWin* GetWinAdapter() { return adapter_; }
private:
void OnGetIncludedCharacteristics(
std::unique_ptr<BTH_LE_GATT_CHARACTERISTIC> characteristics,
uint16_t num,
HRESULT hr);
void UpdateIncludedCharacteristics(
PBTH_LE_GATT_CHARACTERISTIC characteristics,
uint16_t num);
// Sends GattServiceDiscoveryComplete notification if necessary.
void NotifyGattServiceDiscoveryCompleteIfNecessary();
// Checks if the characteristic with |uuid| and |attribute_handle| has already
// been discovered as included characteristic.
bool IsCharacteristicDiscovered(const BTH_LE_UUID& uuid,
uint16_t attribute_handle);
// Checks if |characteristic| still exists in this service according to newly
// retreived |num| of included |characteristics|.
static bool DoesCharacteristicExist(
PBTH_LE_GATT_CHARACTERISTIC characteristics,
uint16_t num,
BluetoothRemoteGattCharacteristicWin* characteristic);
void RemoveIncludedCharacteristic(std::string identifier);
void ClearIncludedCharacteristics();
BluetoothAdapterWin* adapter_;
BluetoothDeviceWin* device_;
base::FilePath service_path_;
BluetoothUUID service_uuid_;
uint16_t service_attribute_handle_;
bool is_primary_;
BluetoothRemoteGattServiceWin* parent_service_;
scoped_refptr<base::SequencedTaskRunner> ui_task_runner_;
std::string service_identifier_;
// BluetoothTaskManagerWin to handle asynchronously Bluetooth IO and platform
// dependent operations.
scoped_refptr<BluetoothTaskManagerWin> task_manager_;
// The element of the set is the identifier of
// BluetoothRemoteGattCharacteristicWin instance.
std::set<std::string> discovery_completed_included_characteristics_;
// Flag indicates if discovery complete notification has been send out to
// avoid duplicate notification.
bool discovery_complete_notified_ = false;
// Counts the number of asynchronous operations that are discovering
// characteristics.
int discovery_pending_count_ = 0;
base::WeakPtrFactory<BluetoothRemoteGattServiceWin> weak_ptr_factory_{this};
DISALLOW_COPY_AND_ASSIGN(BluetoothRemoteGattServiceWin);
};
} // namespace device.
#endif // DEVICE_BLUETOOTH_BLUETOOTH_REMOTE_GATT_SERVICE_WIN_H_
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