activeobserver.h

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// 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_ACTIVEOBSERVER_H
#define SWIFT_MISC_SHAREDSTATE_ACTIVEOBSERVER_H
 
#include <QObject>
#include <QSharedPointer>
 
#include "misc/promise.h"
#include "misc/sharedstate/passiveobserver.h"
#include "misc/swiftmiscexport.h"
#include "misc/variant.h"
 
namespace swift::misc::shared_state
{
    class SWIFT_MISC_EXPORT CActiveObserver final : public CPassiveObserver
    {
        Q_OBJECT
        friend QSharedPointer<CActiveObserver>;
 
        template <typename T, typename F>
        CActiveObserver(T *parent, F eventHandler) : CPassiveObserver(parent, eventHandler)
        {}
 
    public:
        template <typename T, typename F>
        static auto create(T *parent, F eventHandler)
        {
            return QSharedPointer<CActiveObserver>::create(parent, eventHandler);
        }
 
        CVariant request(const CVariant &param);
 
        void requestAsync(const CVariant &param, std::function<void(const CVariant &)> callback);
 
        QWeakPointer<const CActiveObserver> weakRef() const
        {
            return qSharedPointerCast<const CActiveObserver>(CPassiveObserver::weakRef());
        }
 
    signals:
        void requestPosted(const swift::misc::CVariant &param, swift::misc::CPromise<swift::misc::CVariant> o_reply);
    };
} // namespace swift::misc::shared_state
 
#endif // SWIFT_MISC_SHAREDSTATE_ACTIVEOBSERVER_H