jcomboboxdemo.java

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

import java.awt.Dimension;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;

import javax.swing.JComboBox;
import javax.swing.JLabel;
import javax.swing.ImageIcon;
/**
 * JComboBoxDemo 
 */
public class JComboBoxDemo extends BaseSwingDemo implements ItemListener{
	JLabel osIcon;
	protected void init() {
		JComboBox jc = new JComboBox();
		jc.addItem("bsd");
		jc.addItem("linux");
		jc.addItem("mac");
		jc.addItem("windows");
		jc.addItemListener(this);
		add(jc);
		osIcon = new JLabel(new ImageIcon("jcase/gui/resources/bsd.png"));
		add(osIcon);
	}
	/**
	 * @see jcase.gui.swing.BaseSwingDemo#getTitle()
	 */
	public String getTitle() {
		return "JComboBox演示";
	}
	/**
	 * @see java.awt.event.ItemListener#itemStateChanged(java.awt.event.ItemEvent)
	 */
	public void itemStateChanged(ItemEvent e) {
		String s = (String) e.getItem();
		osIcon.setIcon(new ImageIcon("jcase/gui/resources/"+s + ".png"));

	}
	
	/**
	 * @see java.awt.Component#getPreferredSize()
	 */
	public Dimension getPreferredSize() {
		return new Dimension(240,120);
	}
}