Messenger.hpp

#ifndef H_EXTENSIONS_CUTEHMI_2_INCLUDE_CUTEHMI_MESSENGER_HPP
#define H_EXTENSIONS_CUTEHMI_2_INCLUDE_CUTEHMI_MESSENGER_HPP
 
#include "internal/common.hpp"
#include "Message.hpp"
#include "ExceptionMixin.hpp"
#include "Singleton.hpp"
 
#include <QObject>
#include <QMutexLocker>
 
namespace cutehmi {
 
class CUTEHMI_API Messenger:
    public QObject,
    public Singleton<Messenger>
{
        Q_OBJECT
 
        friend class Singleton<Messenger>;
 
    public:
        class CUTEHMI_API NoAdvertiserException:
            public ExceptionMixin<NoAdvertiserException>
        {
                typedef ExceptionMixin<NoAdvertiserException> Parent;
 
            public:
                explicit NoAdvertiserException(Message & message);
 
                NoAdvertiserException(const NoAdvertiserException & other);
 
                NoAdvertiserException & operator =(const NoAdvertiserException & other);
 
                const Message * message() const;
 
            private:
                struct Members
                {
                    std::unique_ptr<Message> message;
                };
 
                MPtr<Members> m;
        };
 
        Q_INVOKABLE void advertise(Message * message_l);
 
        Q_INVOKABLE void resetAdvertiser(QObject * advertiser);
 
    signals:
        void messageRequested(QVariant message);
 
    protected:
        explicit Messenger(QObject * parent = nullptr);
 
        struct Members
        {
            QMutex requestMutex {};
            QObject * advertiser {nullptr};
        };
 
        MPtr<Members> m;
};
 
}
 
#endif
 
//(c)C: Copyright © 2019, 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/>.