musicsinglemanager.h

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#ifndef MUSICSINGLEMANAGER_H
#define MUSICSINGLEMANAGER_H

/***************************************************************************
 * This file is part of the TTK Music Player project
 * Copyright (C) 2015 - 2024 Greedysky Studio

 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.

 * This program 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 General Public License for more details.

 * You should have received a copy of the GNU General Public License along
 * with this program; If not, see <http://www.gnu.org/licenses/>.
 ***************************************************************************/

#include <QMap>
#include "ttksingleton.h"
#include "musicwidgetutils.h"

#define __SingleWidget__1(name)                                    \
    __SingleWidget__2(name, MusicApplication::instance())

#define __SingleWidget__2(name, widget)                            \
    [](QWidget *parent)                                            \
    {                                                              \
        MusicSingleManager *manager = G_SINGLE_MANAGER_PTR;        \
        if(!manager->contains(#name))                              \
        {                                                          \
            manager->appendObject(#name, new name(parent));        \
        }                                                          \
        name *w = TTKObjectCast(name*, manager->object(#name));    \
        TTK::Widget::adjustWidgetPosition(w);                      \
        w->raise();                                                \
        w->show();                                                 \
        return w;                                                  \
    }(widget)

// marco generate single widget
#ifndef Q_CC_MSVC
#  define TTKGenerateSingleWidget(...) TTK_PP_OVERLOAD(__SingleWidget__, __VA_ARGS__)(__VA_ARGS__)
#else
#  define TTKGenerateSingleWidget(...) TTK_PP_CAT(TTK_PP_OVERLOAD(__SingleWidget__, __VA_ARGS__)(__VA_ARGS__), TTK_PP_EMPTY())
#endif

#define TTKRemoveSingleWidget(name) G_SINGLE_MANAGER_PTR->removeObject(name);


class TTK_MODULE_EXPORT MusicSingleManager
{
    TTK_DECLARE_MODULE(MusicSingleManager)
public:
    void appendObject(const QString &name, QObject *object);
    void removeObject(const QString &name);
    QObject *object(const QString &name);
    bool contains(const QString &name) const;

private:
    MusicSingleManager() = default;
    
    QMap<QString, QObject*> m_parameter;

    TTK_DECLARE_SINGLETON_CLASS(MusicSingleManager)

};

#define G_SINGLE_MANAGER_PTR makeMusicSingleManager()
TTK_MODULE_EXPORT MusicSingleManager* makeMusicSingleManager();

#endif // MUSICSINGLEMANAGER_H