package List;

import javax.swing.*;
import java.awt.*;
import java.util.*;
import java.util.List;

public class ListGUI extends JFrame {
    private JPanel panel1;
    private JPanel panel2;
    private JButton right;
    private JButton left;
    private JList rightList;
    private JList leftList;

    public ListGUI(){
        setContentPane(panel1);
        setTitle("List GUI(Task1)");
        setLocation(400,250);
        setMinimumSize(new Dimension(300,250));

        DefaultListModel<String> leftModel = new DefaultListModel<>(),
                rightModel = new DefaultListModel<>();

        leftModel.addElement("Element 1");
        leftModel.addElement("Element 2");
        leftModel.addElement("Element 3");
        rightModel.addElement("Element 4");
        rightModel.addElement("Element 5");


        rightList.setModel(rightModel);
        leftList.setModel(leftModel);

        right=new JButton(">");
        left =new JButton("<");

        panel1.add(leftList,BorderLayout.WEST);
        panel1.add(rightList,BorderLayout.EAST);

        panel2.add(left,BorderLayout.SOUTH);
        panel2.add(right,BorderLayout.NORTH);


       right.addActionListener(e -> {
            List<String> data = leftList.getSelectedValuesList();
            for (String s : data) {
                rightModel.addElement(s);
                leftModel.removeElement(s);
            }
            if (leftModel.isEmpty()) {
                left.setEnabled(false);
            }
            if (!leftModel.isEmpty()) {
                left.setEnabled(true);
            }
        });
        left.addActionListener(e -> {
            List<String> dataToTransfer = rightList.getSelectedValuesList();
            for (String s : dataToTransfer) {
                leftModel.addElement(s);
                rightModel.removeElement(s);
            }
            if (rightModel.isEmpty()) {
                right.setEnabled(false);
            }
            if (!rightModel.isEmpty()) {
                right.setEnabled(true);
            }
        });
    }
}