import java.awt.*;
import java.awt.event.*;
import java.security.*;
import javax.swing.*;


public class Project06McGinnis extends JFrame implements WindowListener {

    private SecureRandom rand = new SecureRandom();
    private int APP_HEIGHT = 400;
    private int APP_WIDTH = 600;
    private String password ="Your Password Will Appear Here: Pro Tip: Ctrl+c to copy and ctrl+v to paste.";

    private JButton passButton = new JButton( "Create Password" );
    private JTextField Jtxt01 = new JTextField( password );
    private JRadioButton radio1 = new JRadioButton( "8 Characters" );
    private JRadioButton radio2 = new JRadioButton( "12 Characters" );
    private JRadioButton radio3 = new JRadioButton( "16 Characters" );
    private JRadioButton radio4 = new JRadioButton( "32 Characters" );


    private JCheckBox check1 = new JCheckBox( "Include Capital Letters" );
    private JCheckBox check2 = new JCheckBox( "Include Numbers" );
    private JCheckBox check3 = new JCheckBox( "Include Special Characters" );

    private JPanel radioPanel;
    private JPanel checkPanel;

public Project06McGinnis(){

    setTitle( "Password Maker" );
    setSize( APP_WIDTH, APP_HEIGHT );
    setDefaultCloseOperation( JFrame.DO_NOTHING_ON_CLOSE );
    setLayout( new GridLayout( 4,1 ) );
    add( Jtxt01 );
    createRadioPanel();
    createCheckPanel();
    add(passButton);
    setVisible( true );
    addWindowListener( this );
}


public void windowClosing( WindowEvent w ){
    int userInput = JOptionPane.showConfirmDialog(
            this,
            "Make sure to copy your password for your records! n (Facebook statuses are a great way to do this!)",
            "Terminate Program?",
            JOptionPane.YES_NO_CANCEL_OPTION
    );
    switch( userInput ){
        case JOptionPane.YES_OPTION:
            System.exit( 0 );
            break;
    }

}


@Override
public void windowOpened(WindowEvent e) {

}


@Override
public void windowClosed(WindowEvent e) {

}

@Override
public void windowIconified(WindowEvent e) {

}

@Override
public void windowDeiconified(WindowEvent e) {

}

@Override
public void windowActivated(WindowEvent e) {

}

@Override
public void windowDeactivated(WindowEvent e) {

}
private void createRadioPanel(){

    radioPanel = new JPanel();
    radioPanel.setLayout( new GridLayout( 1, 3,10,10 ) );

    ButtonGroup b = new ButtonGroup();
    b.add( radio1 );
    b.add( radio2 );
    b.add( radio3 );
    b.add( radio4 );

    radioPanel.add( radio1 );
    radioPanel.add( radio2 );
    radioPanel.add( radio3 );
    radioPanel.add( radio4 );

    add( radioPanel );
}

private void createCheckPanel(){

    checkPanel = new JPanel();
    checkPanel.setLayout( new GridLayout( 1, 3,10,10 ) );
    checkPanel.add( check1 );
    checkPanel.add( check2 );
    checkPanel.add( check3 );

    add( checkPanel );
}

public void actionPerformed( ActionEvent ae ) {

    StringBuilder str = new StringBuilder();
    str.append( lowerCase );

    if( radio1.isSelected() ) {
        str.setLength(8);
    }else if( radio2.isSelected() ) {
        str.setLength(16);
    }else if( radio3.isSelected() ) {
        str.setLength(16);
    }else if( radio4.isSelected() ) {
        str.setLength(32);
    }

    if(check1.isSelected() ) {
        str.append(upperCase);
    }if(check2.isSelected() ) {
        str.append(numbers);
    }if(check3.isSelected() ) {
        str.append(specialChars);
    }

    if( passButton.isSelected() ) {
        password.replace("Your Password Will Appear Here: Pro Tip: Ctrl+c to copy and ctrl+v to paste.", str.toString());
    }


}

public static void main(String[] args){
    new Project06McGinnis();
}

private String lowerCase = "qwertyuiopasdfghjklzxcvbnm";
private String upperCase = "QWERTYUIOPASDFGHJKLZXCVBNM";
private String numbers = "123456789";
private String specialChars = "!@#$%^&*()_-=+'/?<>,.[]{}|";

}