qsettingsloader.h

#ifndef QSETTINGSLOADER_H
#define QSETTINGSLOADER_H

#include "qsettingsdialog_global.h"
#include <QObject>
#include <QVariant>

class QSimpleSettingsLoader;
class QAsyncSettingsLoader;
class QSETTINGSDIALOGSHARED_EXPORT QSettingsLoader
{
    friend class QSimpleSettingsLoader;
    friend class QAsyncSettingsLoader;
    Q_DISABLE_COPY(QSettingsLoader)

public:
    virtual inline ~QSettingsLoader() {}
    virtual bool isAsync() const = 0;

    QSimpleSettingsLoader *simple();
    QAsyncSettingsLoader *async();

private:
    QSettingsLoader();
};

class QSETTINGSDIALOGSHARED_EXPORT QSimpleSettingsLoader : public QSettingsLoader
{
public:
    bool isAsync() const final;

    virtual bool load(QVariant outParam data, bool outParam userEdited) = 0;
    virtual bool save(const QVariant &data) = 0;
    virtual bool reset() = 0;
};

class QSETTINGSDIALOGSHARED_EXPORT QAsyncSettingsLoader : public QObject, public QSettingsLoader
{
    Q_OBJECT

public:
    QAsyncSettingsLoader();

    bool isAsync() const final;

public slots:
    virtual void loadData() = 0;
    virtual void saveData(const QVariant &data) = 0;
    virtual void resetData() = 0;

signals:
    void loadDone(bool successful, const QVariant &data, bool isUserEdited = true);
    void saveDone(bool successful);
    void resetDone(bool successful);
};

#endif // QSETTINGSLOADER_H