第12章-Swing编程 --- Swing中的特殊容器--JSplitPane

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

public class SplitPaneTest
{
    Book[] books = new Book[]{
            new Book("Struts2权威指南" , new ImageIcon("ico/struts2.jpg") , 
                "全面介绍Struts2的各方\n面知识"),
            new Book("轻量级J2EE企业应用实战" , new ImageIcon("ico/j2ee.jpg") ,
                "介绍Struts、Spring和\nHibernate整合开发的知识"),
            new Book("基于J2EE的Ajax宝典" , new ImageIcon("ico/ajax.jpg") , 
                "全面介绍J2EE平台上Ajax\n开发的各方面知识")
        };
        JFrame jf = new JFrame("测试JSplitPane");
        JList bookList = new JList(books);
        JLabel bookCover = new JLabel();
        JTextArea bookDesc = new JTextArea();

        public void init()
        {
            //为三个组件设置最佳大小
            bookList.setPreferredSize(new Dimension(150, 300));
            bookCover.setPreferredSize(new Dimension(300, 150));
            bookDesc.setPreferredSize(new Dimension(300, 150));
            //为下拉列表添加事件监听器
            bookList.addListSelectionListener(new ListSelectionListener()
            {
                public void valueChanged(ListSelectionEvent event)
                {  
                    Book book = (Book)bookList.getSelectedValue();
                    bookCover.setIcon(book.getIco());
                    bookDesc.setText(book.getDesc());
                }
             });
            //创建一个垂直的分割面板，
            //将bookCover放在上面，将bookDesc放在下面 , 支持连续布局
            JSplitPane left = new JSplitPane(JSplitPane.VERTICAL_SPLIT, true , 
                bookCover, new JScrollPane(bookDesc));
            //打开“一触即展”的特性
            left.setOneTouchExpandable(true);
            //下面代码设置分割条的大小。
            //left.setDividerSize(50); 
            //设置该分割面板根据所包含组件的最佳大小来调整布局 
            left.resetToPreferredSizes();
            //创建一个水平的分割面板
            //将left组件放在左边，将bookList组件放在右边
            JSplitPane content = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,
                left, bookList);
            jf.add(content);
            jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            jf.pack();
            jf.setVisible(true);
        }
        public static void main(String[] args)
        {  
            new SplitPaneTest().init();
        }
}

class Book
{ 
    private String name;
    private Icon ico;
    private String desc;

    public Book(){}

    public Book(String name , Icon ico , String desc)
    {
        this.name = name;
        this.ico = ico;
        this.desc = desc;
    }

    public void setName(String name)
    {
        this.name = name;
    }
    public String getName()
    {
         return this.name;
    }

    public void setIco(Icon ico)
    {
        this.ico = ico;
    }
    public Icon getIco()
    {
         return this.ico;
    }

    public void setDesc(String desc)
    {
        this.desc = desc;
    }
    public String getDesc()
    {
         return this.desc;
    }
    public String toString()
    {
        return name;
    }
}