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


class Calendaari {
    //Määrittelyt
    int kk = java.util.Calendar.getInstance().get(java.util.Calendar.MONTH);
    int vuosi = java.util.Calendar.getInstance().get(java.util.Calendar.YEAR);
    JLabel label = new JLabel("", JLabel.CENTER);
    String paiva = "";
    JDialog dialogi;
    JButton[] button = new JButton[49];
    //PVM valitsija


                /* JLabel label = new JLabel("Selected Date:");
                final JTextField text = new JTextField(20);
                JButton b = new JButton("popup");
                JPanel p = new JPanel();
                p.add(label);
                p.add(text);
                p.add(b);
                final JFrame f = new JFrame();
                f.getContentPane().add(p);
                f.pack();
                f.setVisible(true);*/
               // b.addActionListener(new ActionListener() {
                   //     public void actionPerformed(ActionEvent ae) {
                 //               text.setText(new DatePicker(f).setPickedDate());

    public Calendaari(JFrame parent){
    dialogi = new JDialog();
    dialogi.setModal(true);
    String[] header = { "Sunnuntai" , "Maanantai" , "Tiistai" , "Keskiviikko" , "Torstai" , "Perjantai" , "Lauantai"};
    JPanel pl = new JPanel(new GridLayout(7, 7));
    pl.setPreferredSize(new Dimension(430, 120));

    for (int x=0; x<button.length; x++) {
        final int valinta = x;
        button[x] = new JButton();
        button[x].setFocusPainted(false);
        button[x].setBackground(Color.white);
        if(x>6)
            button[x].addActionListener(new ActionListener(){
                public void actionPerformed(ActionEvent ae){
                    paiva = button[valinta].getActionCommand();
                    dialogi.dispose();
                }
                });
        if(x<7) {
            button[x].setText(header[x]);
            button[x].setForeground(Color.red);
        }
        pl.add(button[x]);
    }
    JPanel p2 = new JPanel(new GridLayout(1, 3));
            JButton takas = new JButton("<< Edelline KK");
                takas.addActionListener(new ActionListener() {
                        public void actionPerformed(ActionEvent ae) {
                                kk--;
                                displayDate();
                        }
                });
                p2.add(takas);
                p2.add(label);
                JButton next = new JButton("Seuraava KK >>");
                next.addActionListener(new ActionListener() {
                        public void actionPerformed(ActionEvent ae) {
                                kk++;
                                displayDate();
                        }
                });
                p2.add(next);
                dialogi.add(pl, BorderLayout.CENTER);
                 dialogi.add(p2, BorderLayout.SOUTH);
                 dialogi.pack();
                 dialogi.setLocationRelativeTo(parent);
                displayDate();
                 dialogi.setVisible(true);
        }

        public void displayDate() {
                for (int x = 7; x < button.length; x++)
                        button[x].setText("");
                java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat(
                                "MMMM yyyy");
                java.util.Calendar cal = java.util.Calendar.getInstance();
                cal.set(vuosi, kk, 1);
                int dayOfWeek = cal.get(java.util.Calendar.DAY_OF_WEEK);
                int daysInMonth = cal.getActualMaximum(java.util.Calendar.DAY_OF_MONTH);
                for (int x = 6 + dayOfWeek, day = 1; day <= daysInMonth; x++, day++)
                        button[x].setText("" + day);
                label.setText(sdf.format(cal.getTime()));
                dialogi.setTitle("Kalenteri");
        }

        public String setPickedDate() {
                if (paiva.equals(""))
                        return paiva;
                java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat(
                                "dd-MM-yyyy");
                java.util.Calendar cal = java.util.Calendar.getInstance();
                cal.set(vuosi, kk, Integer.parseInt(paiva));
                return sdf.format(cal.getTime());
        }
}

public class Paivamaara {
        public static void main(String[] args) {

        }
         //       });
        //}
}