#ifndef CSM_PREFS_SETTING_H
#define CSM_PREFS_SETTING_H

#include <string>
#include <utility>

#include <QObject>

class QWidget;
class QColor;
class QMutex;

namespace CSMPrefs
{
    class Category;

    class Setting : public QObject
    {
        Q_OBJECT

        Category* mParent;
        QMutex* mMutex;
        std::string mKey;
        std::string mLabel;

    protected:
        QMutex* getMutex();

    public:
        Setting(Category* parent, QMutex* mutex, const std::string& key, const std::string& label);

        virtual ~Setting();

        /// Return label, input widget.
        ///
        /// \note first can be a 0-pointer, which means that the label is part of the input
        /// widget.
        virtual std::pair<QWidget*, QWidget*> makeWidgets(QWidget* parent);

        /// Updates the widget returned by makeWidgets() to the current setting.
        ///
        /// \note If make_widgets() has not been called yet then nothing happens.
        virtual void updateWidget();

        const Category* getParent() const;

        const std::string& getKey() const;

        const std::string& getLabel() const;

        int toInt() const;

        double toDouble() const;

        std::string toString() const;

        bool isTrue() const;

        QColor toColor() const;
    };

    // note: fullKeys have the format categoryKey/settingKey
    bool operator==(const Setting& setting, const std::string& fullKey);
    bool operator==(const std::string& fullKey, const Setting& setting);
    bool operator!=(const Setting& setting, const std::string& fullKey);
    bool operator!=(const std::string& fullKey, const Setting& setting);
}

#endif