ServiceManager.hpp

#ifndef H_EXTENSIONS_CUTEHMI_SERVICES_2_INCLUDE_CUTEHMI_SERVICES_SERVICEMANAGER_HPP
#define H_EXTENSIONS_CUTEHMI_SERVICES_2_INCLUDE_CUTEHMI_SERVICES_SERVICEMANAGER_HPP
 
#include "internal/common.hpp"
#include "ServiceListModel.hpp"
 
#include <cutehmi/Singleton.hpp>
 
#include <QQueue>
#include <QMultiHash>
 
namespace cutehmi {
namespace services {
 
class CUTEHMI_SERVICES_API ServiceManager:
    public QObject,
    public Singleton<ServiceManager>
{
        Q_OBJECT
 
        friend class Singleton<ServiceManager>;
        friend class Service;
 
    public:
        static constexpr int INITIAL_MAX_ACTIVE_SERVICES = 1;
        static constexpr int INITIAL_REPAIR_INTERVAL = 10000;
 
        Q_PROPERTY(int maxActiveServices READ maxActiveServices WRITE setMaxActiveServices NOTIFY maxActiveServicesChanged)
 
        
        Q_PROPERTY(int repairInterval READ repairInterval WRITE setRepairInterval NOTIFY repairIntervalChanged)
 
        Q_PROPERTY(int runningCount READ runningCount NOTIFY runningCountChanged)
 
        Q_PROPERTY(ServiceListModel * model READ model CONSTANT)
 
        int maxActiveServices() const;
 
        void setMaxActiveServices(int maxActiveServices);
 
        int repairInterval() const;
 
        void setRepairInterval(int repairInterval);
 
        int runningCount() const;
 
        ServiceListModel * model() const;
 
    public slots:
        void start();
 
        void stop();
 
    signals:
        void maxActiveServicesChanged();
 
        void repairIntervalChanged();
 
        void runningCountChanged();
 
    protected:
        explicit ServiceManager(QObject * parent = nullptr);
 
        void add(Service * service);
 
        void remove(Service * service);
 
        void manage(Service * service);
 
        void leave(Service * service);
 
    private:
        typedef QQueue<Service *> YieldingServicesContainer;
        typedef QMultiHash<const internal::StateInterface *, QMetaObject::Connection> StateInterfaceConnectionsContainer;
 
        struct Members {
            int activeServices;
            int runningCount;
            int maxActiveServices;
            int repairInterval;
            std::unique_ptr<ServiceListModel> model;
            YieldingServicesContainer yieldingServices;
            StateInterfaceConnectionsContainer stateInterfaceConnections;   // The only way to disconnect particular lambda from particular emitter is to store its connection.
 
            Members():
                activeServices(0),
                runningCount(0),
                maxActiveServices(INITIAL_MAX_ACTIVE_SERVICES),
                repairInterval(INITIAL_REPAIR_INTERVAL),
                model(new ServiceListModel)
            {
            }
        };
 
        MPtr<Members> m;
};
 
}
}
 
#endif
 
//(c)C: Copyright © 2019-2020, Michał Policht <michal@policht.pl>. All rights reserved.
//(c)C: This file is a part of CuteHMI.
//(c)C: CuteHMI is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
//(c)C: CuteHMI is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more details.
//(c)C: You should have received a copy of the GNU Lesser General Public License along with CuteHMI.  If not, see <https://www.gnu.org/licenses/>.