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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 <set>
#include "base/files/file.h"
#include "base/memory/weak_ptr.h"
#include "base/sequenced_task_runner.h"
#include "device/bluetooth/bluetooth_gatt_service.h"
#include "device/bluetooth/bluetooth_low_energy_defs_win.h"
namespace device {
class BluetoothAdapterWin;
class BluetoothDeviceWin;
class BluetoothRemoteGattCharacteristicWin;
class BluetoothTaskManagerWin;
// The BluetoothRemoteGattServiceWin class implements BluetoothGattService
// for remote GATT services on Windows 8 and later.
class DEVICE_BLUETOOTH_EXPORT BluetoothRemoteGattServiceWin
: public BluetoothGattService {
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 BluetoothGattService interfaces.
std::string GetIdentifier() const override;
BluetoothUUID GetUUID() const override;
bool IsLocal() const override;
bool IsPrimary() const override;
BluetoothDevice* GetDevice() const override;
std::vector<BluetoothGattCharacteristic*> GetCharacteristics() const override;
std::vector<BluetoothGattService*> GetIncludedServices() const override;
BluetoothGattCharacteristic* GetCharacteristic(
const std::string& identifier) const override;
bool AddCharacteristic(BluetoothGattCharacteristic* characteristic) override;
bool AddIncludedService(BluetoothGattService* service) override;
void Register(const base::Closure& callback,
const ErrorCallback& error_callback) override;
void Unregister(const base::Closure& callback,
const ErrorCallback& error_callback) 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_; }
private:
void OnGetIncludedCharacteristics(
scoped_ptr<BTH_LE_GATT_CHARACTERISTIC> characteristics,
uint16_t num,
HRESULT hr);
void UpdateIncludedCharacteristics(
PBTH_LE_GATT_CHARACTERISTIC characteristics,
uint16_t num);
// Sends GattDiscoveryCompleteForService notification if necessary.
void NotifyGattDiscoveryCompleteForServiceIfNecessary();
// Checks if the characteristic with |uuid| and |attribute_handle| has already
// been discovered as included characteristic.
bool IsCharacteristicDiscovered(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 key of GattCharacteristicsMap is the identifier of
// BluetoothRemoteGattCharacteristicWin instance.
typedef std::unordered_map<std::string,
scoped_ptr<BluetoothRemoteGattCharacteristicWin>>
GattCharacteristicsMap;
GattCharacteristicsMap included_characteristics_;
// The element of the set is the identifier of
// BluetoothRemoteGattCharacteristicWin instance.
std::set<std::string> discovery_completed_included_charateristics_;
// Flag indicates if discovery complete notification has been send out to
// avoid duplicate notification.
bool discovery_complete_notified_;
// Flag indicates if asynchronous discovery of included characteristic has
// completed.
bool included_characteristics_discovered_;
base::WeakPtrFactory<BluetoothRemoteGattServiceWin> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(BluetoothRemoteGattServiceWin);
};
} // namespace device.
#endif // DEVICE_BLUETOOTH_BLUETOOTH_REMOTE_GATT_SERVICE_WIN_H_
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