jcheckboxdemo.java

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/*
 * $Header$
 * $Date$ 
 * $Revision$
 * Copyright (C) 2003-2004 CIC, Tsinghua Univ. 
 */
package jcase.gui.swing;

import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.util.Enumeration;
import java.util.Properties;

import javax.swing.ImageIcon;
import javax.swing.JCheckBox;
import javax.swing.JTextField;

/**
 * JCheckBoxDemo 
 */
public class JCheckBoxDemo extends BaseSwingDemo implements ItemListener{
	JTextField jtf;
	Properties ships;
	protected void init() {
		ships=new Properties();
		ships.setProperty("尼布加尼撒号","（马克三型，编好十一）建于2069年");
		ships.setProperty("奥西瑞斯号","建于2079年");
		ships.setProperty("逻格斯号","建于2101年");
		ships.setProperty("雷神之锤号","（马克十四型，编号六十二）建于2111年");
		Enumeration keys=ships.keys();
		while(keys.hasMoreElements()){
			String key=keys.nextElement().toString();
			add(createShip(key));
		}
		jtf = new JTextField(30);
		add(jtf);
	}
	/**
	 * @see jcase.gui.swing.BaseSwingDemo#getTitle()
	 */
	public String getTitle() {
		// TODO something else
		return "JCheckBox演示";
	}
	
	private JCheckBox createShip(String text){
		JCheckBox check = new JCheckBox(text, new ImageIcon("jcase/gui/resources/cb.gif")); 
	 	check.setRolloverIcon(new ImageIcon("jcase/gui/resources/cbr.gif")); 
	 	check.setRolloverSelectedIcon(new ImageIcon("jcase/gui/resources/cbrs.gif")); 
	 	check.setSelectedIcon(new ImageIcon("jcase/gui/resources/cbs.gif")); 
	 	check.addItemListener(this);
	 	return check;
	}
	/**
	 * @see java.awt.event.ItemListener#itemStateChanged(java.awt.event.ItemEvent)
	 */
	public void itemStateChanged(ItemEvent e) {
		String ship = ((JCheckBox) e.getItem()).getText();		
		jtf.setText(ship+": "+ships.getProperty(ship));
	}
}