/*
 * settingswidget.h
 *
 * This file is covered by the LICENSE file in the root of this project.
 */

#ifndef SETTINGSWIDGET_H
#define SETTINGSWIDGET_H

#include <QCheckBox>
#include <QDialog>
#include <QLineEdit>

#include "mandel.h"
#include "uint64validator.h"

template <typename T> class TypedLineEdit;

template <> class TypedLineEdit<quint64> : public QLineEdit {
public:
    explicit TypedLineEdit(QWidget *parent = nullptr) : QLineEdit(parent) {
        setValidator(new UInt64Validator(this));
    }
    inline void set_value(const quint64 &value) {
        setText(QString::number(value));
    }
    inline quint64 get_value() const { return text().toULongLong(); }
};

template <> class TypedLineEdit<int> : public QLineEdit {
public:
    explicit TypedLineEdit(QWidget *parent = nullptr) : QLineEdit(parent) {
        setValidator(new QIntValidator(this));
    }
    inline void set_value(const int &value) {
        setText(QString::number(value));
    }
    inline int get_value() const { return text().toInt(); }
};

template <> class TypedLineEdit<mpz_class> : public QLineEdit {
public:
    explicit TypedLineEdit(QWidget *parent = nullptr) : QLineEdit(parent) {
        QRegularExpression number_re("^-?\\d+$");
        setValidator(new QRegularExpressionValidator(number_re, this));
    }
    inline void set_value(const mpz_class &value) {
        setText(QString::fromStdString(value.get_str()));
    }
    inline mpz_class get_value() const {
        return mpz_class(text().toStdString());
    }
};

class SettingsWidget : public QDialog {
    Q_OBJECT

    MandelParams orig;
    TypedLineEdit<quint64> *max_iter;
    TypedLineEdit<int> *width, *height;
    TypedLineEdit<mpz_class> *center_f_x, *center_f_y, *one;
    QCheckBox *clear_image;
    bool updating;

public:
    explicit SettingsWidget(QWidget *parent = nullptr);
    void update_params(const MandelParams &params);
    void reset_params_fields();
    bool are_params_fields_changed();
    inline const quint64 get_max_iter() const {
        return max_iter->get_value();
    }
    MandelParams get_params() const;
    inline bool is_clear_image_checked() const {
        return clear_image->isChecked();
    }

public Q_SLOTS:
    void update_form();
    void reset_form();
};

#endif // SETTINGSWIDGET_H