GUIWindow

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.IOException;

public class GUIWindow extends JFrame {
    //menu container variables
    private JLabel title;
    private JLabel howToPlay;
    private JTextArea instructions;
    private JButton start;
    private JButton highScores;
    private JButton quit;
    private JPanel startScreen;
    private Container menuContainer;

    //high score container variables
    private JLabel titleScores;
    private JTextArea scoreList;
    private JButton backToMenu;
    private JPanel scoresScreen;
    private Container scoresContainer;


    //Constructor to set up the GUI
    public GUIWindow() {

        //initialize variables
        title = new JLabel("STACKER");
        title.setFont(new Font("SansSerif", Font.PLAIN, 50)); //setFont changes the JLabel's font, style, and size
        title.setHorizontalAlignment(JLabel.CENTER); //this will center the text horizontally
        start = new JButton("START");
        highScores = new JButton("SCORES");
        quit = new JButton("QUIT");
        howToPlay = new JLabel("How To Play");
        howToPlay.setFont(new Font("SansSerif", Font.BOLD, 25));
        howToPlay.setHorizontalAlignment(JLabel.CENTER);
        instructions = new JTextArea("Stack blocks by pressing the \n<space> key. Score increases \nby 1 point after"
                + " each successful \nstack. The more blocks you stack, \nthe harder the game will become. \nView your scores"
                + " by pressing \nthe \"Scores\" button.");
        instructions.setFont(new Font("SansSerif", Font.PLAIN, 15));

        startScreen = new JPanel();
        startScreen.add(title);
        startScreen.add(start);
        startScreen.add(highScores);
        startScreen.add(quit);
        startScreen.add(howToPlay);
        startScreen.add(instructions);
        menuContainer = getContentPane();
        menuContainer.add(startScreen, BorderLayout.CENTER);


        //Adds listeners to buttons, listens for a mouse click
        start.addActionListener(new StackerListener());
        highScores.addActionListener(new StackerListener());
        quit.addActionListener(new StackerListener());

    }

    private class StackerListener implements ActionListener{
        public void actionPerformed(ActionEvent e) {
            //getSource() checks to see which button is clicked, then performs the actions specific to that button
            if(e.getSource() == start) {

            }
            else if(e.getSource() == highScores) {
                String scoresString = "";

                //this try/catch was auto suggested, i did not write it myself
                try {
                    Scores checkScores = new Scores();
                    scoresString = checkScores.toString();

                } catch (IOException e1) {
                    e1.printStackTrace();
                }
                titleScores = new JLabel("High Scores");
                titleScores.setFont(new Font("SansSerif", Font.PLAIN, 20));
                titleScores.setHorizontalAlignment(JLabel.CENTER);
                scoreList = new JTextArea(scoresString);
                scoreList.setFont(new Font("SansSerif", Font.PLAIN, 10));
                backToMenu = new JButton("Menu");
                scoresScreen = new JPanel();
                scoresScreen.add(titleScores);
                scoresScreen.add(scoreList);
                scoresScreen.add(backToMenu);
                scoresContainer = getContentPane();
                scoresContainer.add(scoresScreen, BorderLayout.CENTER);
                scoresContainer.validate();
                scoresContainer.repaint();
                backToMenu.addActionListener(new ScoresListener());
            }
            else {
                System.exit(1); //quits the program
            }
        }
    }
    private class ScoresListener implements ActionListener {
        public void actionPerformed(ActionEvent e) {
            scoresContainer.setVisible(false);
            menuContainer.setVisible(true);
        }
    }

}