StatusInfo.h

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#ifndef STATUSINFO_H
#define STATUSINFO_H
 
#include <QMetaType>
#include <QString>
#include <optional>
 
class StatusInfo {
public:
    struct Message {
        QString text;
        Qt::TextFormat format = Qt::PlainText;
        Message() = default;
        Message(QString const &text, Qt::TextFormat format = Qt::PlainText)
            : text(text)
            , format(format)
        {}
    };
    std::optional<Message> message_;
    std::optional<float> progress_;
private:
    StatusInfo(std::optional<Message> message, std::optional<float> progress)
        : message_(message), progress_(progress)
    {
    }
public:
    StatusInfo() = default;
    static StatusInfo Clear()
    {
        return StatusInfo(std::nullopt, std::nullopt);
    }
    static StatusInfo message(Message const &msg)
    {
        return StatusInfo(msg, std::nullopt);
    }
    static StatusInfo progress(Message const &msg, float progress = -1.0f)
    {
        return StatusInfo(msg, progress);
    }
    static StatusInfo progress(float progress)
    {
        return StatusInfo(std::nullopt, progress);
    }
};
Q_DECLARE_METATYPE(StatusInfo)
 
#endif // STATUSINFO_H