package zadanie12.pkg2;

import java.util.LinkedList;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

class Program extends JFrame{
    private Stos obiekt_stos;
    private JButton b1 = new JButton("init");
    private JButton b2 = new JButton("push");
    private JTextField t1 = new JTextField("        ");
    private JButton b3 = new JButton("pop");
    private JButton b4 = new JButton("top");
    private JTextField t2 = new JTextField("        ");
    private JButton b5 = new JButton("empty");
    private JTextField t3 = new JTextField("            ");
    private JButton b6 = new JButton("full");
    private JTextField t4 = new JTextField("            ");
    Program(){
        setTitle("Stos");
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        getContentPane().setLayout(new FlowLayout());
        add(b1); add(b2); add(t1); add(b3); add(b4); add(t2); add(b5); add(t3); add(b6); add(t4);
        pack();
        b1.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent evt){
                obiekt_stos = new Stos();
            }
        });
        b2.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent evt){
                int liczba_push = Integer.parseInt(t1.getText().trim());
                obiekt_stos.push(liczba_push);
            }
        });
        b3.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent evt){
                obiekt_stos.pop();
            }
        });
        b4.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent evt){
                int liczba_top = obiekt_stos.top();
                t2.setText(liczba_top);
            }
        });
    }
}

class Stos{
    private LinkedList<Integer> stos_l = new LinkedList<>();
    private int rozmiar = 0;
    Stos(){
        rozmiar = 10;
    }
    public void push(int _element){
        stos_l.add(_element);
    }
    public void pop(){
        stos_l.removeLast();
    }
    public int top(){
        return stos_l.getLast();
    }
    public boolean pusty(){
        return stos_l.isEmpty();
    }
    public boolean pelny(){
        return stos_l.size() == rozmiar;
    }
}

public class Zadanie122 {

    public static void main(String[] args) {
        new Program().setVisible(true);
    }

}