deyou
125 lines
3.1 KiB
Java
125 lines
3.1 KiB
Java
import java.awt.*;
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import javax.swing.*;
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import javax.swing.event.*;
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/**
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* This program demonstrates the split pane component organizer.
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* @version 1.03 2007-08-01
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* @author Cay Horstmann
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*/
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public class SplitPaneTest
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{
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public static void main(String[] args)
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{
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EventQueue.invokeLater(new Runnable()
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{
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public void run()
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{
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JFrame frame = new SplitPaneFrame();
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frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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frame.setVisible(true);
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}
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});
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}
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}
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/**
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* This frame consists of two nested split panes to demonstrate planet images and data.
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*/
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class SplitPaneFrame extends JFrame
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{
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public SplitPaneFrame()
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{
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setTitle("SplitPaneTest");
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setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);
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// set up components for planet names, images, descriptions
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final JList planetList = new JList(planets);
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final JLabel planetImage = new JLabel();
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final JTextArea planetDescription = new JTextArea();
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planetList.addListSelectionListener(new ListSelectionListener()
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{
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public void valueChanged(ListSelectionEvent event)
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{
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Planet value = (Planet) planetList.getSelectedValue();
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// update image and description
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planetImage.setIcon(value.getImage());
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planetDescription.setText(value.getDescription());
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}
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});
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// set up split panes
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JSplitPane innerPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, planetList, planetImage);
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innerPane.setContinuousLayout(true);
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innerPane.setOneTouchExpandable(true);
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JSplitPane outerPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT, innerPane,
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planetDescription);
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add(outerPane, BorderLayout.CENTER);
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}
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private Planet[] planets = { new Planet("Mercury", 2440, 0), new Planet("Venus", 6052, 0),
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new Planet("Earth", 6378, 1), new Planet("Mars", 3397, 2),
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new Planet("Jupiter", 71492, 16), new Planet("Saturn", 60268, 18),
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new Planet("Uranus", 25559, 17), new Planet("Neptune", 24766, 8),
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new Planet("Pluto", 1137, 1), };
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private static final int DEFAULT_WIDTH = 300;
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private static final int DEFAULT_HEIGHT = 300;
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}
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/**
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* Describes a planet.
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*/
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class Planet
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{
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/**
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* Constructs a planet.
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* @param n the planet name
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* @param r the planet radius
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* @param m the number of moons
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*/
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public Planet(String n, double r, int m)
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{
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name = n;
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radius = r;
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moons = m;
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image = new ImageIcon(name + ".gif");
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}
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public String toString()
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{
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return name;
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}
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/**
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* Gets a description of the planet.
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* @return the description
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*/
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public String getDescription()
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{
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return "Radius: " + radius + "\nMoons: " + moons + "\n";
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}
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/**
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* Gets an image of the planet.
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* @return the image
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*/
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public ImageIcon getImage()
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{
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return image;
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}
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private String name;
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private double radius;
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private int moons;
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private ImageIcon image;
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}
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