package com.aynu.layout;

import javax.swing.*;
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class DefaultListModelTest {

    JFrame jf = new JFrame("测试DefaultListModel");

    JTextField bookName = new JTextField(20);

    JButton removeBtn = new JButton("删除选中的图书");

    JButton addBtn = new JButton("添加指定图书");

    //创建JList
    JList<String> bookList;

    DefaultListModel<String> model = new DefaultListModel<>();

    public void init() {
        //组装视图
        model.addElement("水浒传");
        model.addElement("西游记");
        model.addElement("三国演义");
        model.addElement("红楼梦");

        bookList = new JList<>(model);

        //设置JList
        bookList.setVisibleRowCount(4);
        //设置单选
        bookList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

        jf.add(new JScrollPane(bookList));

        //组装底部
        addBtn.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                String name = bookName.getText();
                if (!name.trim().equals("")) {
                    model.addElement(name);
                }
            }
        });

        removeBtn.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                int selectedIndex = bookList.getSelectedIndex();

                if (selectedIndex >= 0) {
                    model.remove(selectedIndex);
                }
            }
        });


        JPanel bottonPanel = new JPanel();
        bottonPanel.add(bookName);
        bottonPanel.add(addBtn);
        bottonPanel.add(removeBtn);

        jf.add(bottonPanel, BorderLayout.SOUTH);

        jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        jf.pack();
        jf.setVisible(true);

    }

    public static void main(String[] args) {
        new DefaultListModelTest().init();
    }
}