szmata

package ztp4;

import java.awt.event.*;
import java.util.ArrayList;
import java.util.Random;
import javax.swing.*;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;


// dane przechowywane w bazie
interface Data {
    public int get(int idx);
    public void set(int idx, int value);
    public int size();
}



// prosta implementacja danych - tablica
class RealData implements Data {

    Random generator = new Random();
    int[] dane;
    int size_kl;

    RealData(int size){
        dane = new int[size];
        size_kl = size;
            for(int i=0;i<size;i++)
            {
                dane[i]=generator.nextInt();
            }
    }

    @Override
    public int get(int idx) {
        return dane[idx];
    }

    @Override
    public void set(int idx, int value) {
        dane[idx] = value;
    }

    @Override
    public int size() {
        return size_kl;
    }

}

// baza danych - kolekcja Data
class Baza extends AbstractListModel{
    private ArrayList<Data> ar = new ArrayList<Data>();

   public void valueChanged(ListSelectionEvent e) {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
   }

    public void add(Data tab){
      if(ar.add(tab)){
         fireContentsChanged(this, 0, getSize());
      }
      fireIntervalAdded(tab,  0,  getSize()   );
    }

    public void remove(int idx){
        ar.remove(idx);
    }

    @Override
    public int getSize() {
        return ar.size();
    }

    @Override
    public Object getElementAt(int index) {
        return ar.toArray()[index];
    }
}


public class ztp4 {

    public static void main(String[] args) {

        final Baza dane = new Baza();

        Data dane1 = new RealData(dane.getSize());

        final JFrame frame = new JFrame("Zadanie 4");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JSplitPane splitPane = new JSplitPane();

        final JList list = new JList(dane);
        list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
        JScrollPane scrollPane = new JScrollPane(list);
        scrollPane.setBorder(BorderFactory.createTitledBorder(" Tablice: "));
        splitPane.setLeftComponent(scrollPane);

        JTable table = new JTable(/* tutaj adapter*/);
        scrollPane = new JScrollPane(table);
        scrollPane.setBorder(BorderFactory.createTitledBorder(" Zawartość: "));
        splitPane.setRightComponent(scrollPane);

        frame.getContentPane().add(splitPane);

        JMenuBar bar = new JMenuBar();
        JButton add = new JButton("Dodaj tablicę");
        JButton del = new JButton("Usuń tablicę");
        bar.add(add);
        bar.add(del);

        frame.setJMenuBar(bar);

        frame.setSize(600, 450);
        frame.setVisible(true);

        splitPane.setDividerLocation(0.5);

        add.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {
                String value = JOptionPane.showInputDialog(frame,
                        "Podaj rozmiar tablicy",
                        "Dodaj",
                        JOptionPane.INFORMATION_MESSAGE);
                try{
                    int size = Integer.parseInt(value);
                    dane.add(new RealData(size));
                } catch(Exception ex) { };
            }
        });
        del.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {
                int idx = list.getSelectedIndex();
                try{
                    dane.remove(idx);
                } catch(Exception ex) { };
            }
        });

        // zmiana wyboru na liście powoduje odświeżenie tabeli
        list.addListSelectionListener(new ListSelectionListener() {
            public void valueChanged(ListSelectionEvent e) {
                int idx = list.getSelectedIndex();
                if (idx >= 0) {
                    //
                }
            }
        }
        );
    }
}