mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <Polynomial.h>
#include "QCloseEvent"

QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE

class MainWindow : public QMainWindow
{
    Q_OBJECT
public:
    MainWindow(QWidget *parent = nullptr);
    ~MainWindow();

protected:
    virtual void closeEvent(QCloseEvent *event) override;

private slots:
    void on_action_triggered();

    void on_actionQT_triggered();

    void on_pushButton_clicked();

    void on_action_2_triggered();

    void on_action_3_triggered();

    void on_action_4_triggered();

    void on_action_5_triggered();

    void on_pushButton_3_clicked();

    void on_pushButton_2_clicked();

    void on_pushButton_10_clicked();

    void on_pushButton_9_clicked();

    void on_pushButton_6_clicked();

    void on_pushButton_5_clicked();

    void on_pushButton_7_clicked();

    void on_pushButton_8_clicked();

private:
    Ui::MainWindow *ui;
    DoubleList<Polynomial>* _polynomials;
    QString _path = "";
    bool _changed = false;
    bool open(QString);
    bool save(QString);

};
#endif // MAINWINDOW_H