qbluetoothdevicewatcher_winrt_p.h

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// Copyright (C) 2022 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef QBLUETOOTHDEVICEWATCHER_WINRT_P_H
#define QBLUETOOTHDEVICEWATCHER_WINRT_P_H
 
//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
 
#include <QtCore/private/qglobal_p.h>
#include <QtCore/QObject>
 
#include <private/qbluetoothutils_winrt_p.h>
 
#include <winrt/base.h>
#include <QtCore/private/qfactorycacheregistration_p.h>
#include <winrt/Windows.Devices.Enumeration.h>
 
QT_BEGIN_NAMESPACE
 
class QBluetoothDeviceWatcherWinRT : public QObject,
        public std::enable_shared_from_this<QBluetoothDeviceWatcherWinRT>
{
    Q_OBJECT
public:
    QBluetoothDeviceWatcherWinRT(int id, winrt::hstring selector);
    QBluetoothDeviceWatcherWinRT(int id, winrt::hstring selector,
                                 winrt::Windows::Devices::Enumeration::DeviceInformationKind kind);
    ~QBluetoothDeviceWatcherWinRT();
 
    bool init();
    void start();
    void stop();
 
signals:
    // The signals will be emitted from a separate thread,
    // so we need to use Qt::QueuedConnection
    void deviceAdded(winrt::hstring deviceId, int id);
    void deviceRemoved(winrt::hstring deviceId, int id);
    void deviceUpdated(winrt::hstring deviceId, int id);
    void enumerationCompleted(int id);
    void watcherStopped(int id);
 
private:
    void subscribeToEvents();
    void unsubscribeFromEvents();
    bool canStop() const;
 
    const int m_id; // used to uniquely identify the wrapper
    winrt::Windows::Devices::Enumeration::DeviceWatcher m_watcher = nullptr;
 
    winrt::event_token m_addedToken;
    winrt::event_token m_removedToken;
    winrt::event_token m_updatedToken;
    winrt::event_token m_enumerationToken;
    winrt::event_token m_stoppedToken;
};
 
QT_END_NAMESPACE
 
#endif // QBLUETOOTHDEVICEWATCHER_WINRT_P_H