datalink.h

Go to the documentation of this file.

// SPDX-FileCopyrightText: Copyright (C) 2017 swift Project Community / Contributors
// SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-swift-pilot-client-1
 
 
#ifndef SWIFT_MISC_SHAREDSTATE_DATALINK_H
#define SWIFT_MISC_SHAREDSTATE_DATALINK_H
 
#include <QMetaClassInfo>
#include <QMetaObject>
#include <QObject>
#include <QStringBuilder>
 
#include "misc/promise.h"
#include "misc/swiftmiscexport.h"
#include "misc/variant.h"
 
#define SWIFT_SHARED_STATE_CHANNEL(ID) Q_CLASSINFO("SharedStateChannel", ID)
 
namespace swift::misc::shared_state
{
    class IDataLink;
    class CPassiveMutator;
    class CActiveMutator;
    class CPassiveObserver;
    class CActiveObserver;
 
    class CDataLinkConnectionWatcher : public QObject
    {
        Q_OBJECT
 
    public:
        bool isConnected() const { return m_connected; }
 
    signals:
        void connected();
 
        void disconnected();
 
    private:
        friend class IDataLink;
        CDataLinkConnectionWatcher() = default;
        void setStatus(bool connected);
        bool m_connected = false;
    };
 
    class SWIFT_MISC_EXPORT IDataLink
    {
    public:
        IDataLink();
 
        virtual ~IDataLink() = 0;
 
        CDataLinkConnectionWatcher *watcher() { return &m_watcher; }
 
        virtual void publish(const CPassiveMutator *mutator) = 0;
        virtual void publish(const CActiveMutator *mutator) = 0;
 
        virtual void subscribe(const CPassiveObserver *observer) = 0;
        virtual void subscribe(const CActiveObserver *observer) = 0;
 
    protected:
        void setConnectionStatus(bool connected) { m_watcher.setStatus(connected); }
 
        static QString getChannelName(const QObject *object);
 
    private:
        CDataLinkConnectionWatcher m_watcher;
    };
} // namespace swift::misc::shared_state
 
Q_DECLARE_INTERFACE(swift::misc::shared_state::IDataLink, "swift::misc::shared_state::IDataLink")
Q_DECLARE_METATYPE(swift::misc::CPromise<swift::misc::CVariant>)
 
#endif // SWIFT_MISC_SHAREDSTATE_DATALINK_H