testjoptionpane.java

疯狂Java讲义_源码(含Java设计模式CHM

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

/**
 * Description:
 * <br/>Copyright (C), 2005-2008, Yeeku.H.Lee
 * <br/>This program is protected by copyright laws.
 * <br/>Program Name:
 * <br/>Date:
 * @author  Yeeku.H.Lee [e-mail]
 * @version  1.0
 */

public class TestJOptionPane
{
	JFrame jf = new JFrame("测试JOptionPane");
	//分别定义6个面板用于定义对话框的几种选项
	private ButtonPanel messagePanel;
	private ButtonPanel messageTypePanel;
	private ButtonPanel msgPanel;
	private ButtonPanel confirmPanel;
	private ButtonPanel optionsPanel;
	private ButtonPanel inputPanel;
	private String messageString = "消息区内容";
	private Icon messageIcon = new ImageIcon("ico/heart.png");
	private Object messageObject = new Date();
	private Component messageComponent = new JButton("组件消息");
	private JButton msgBn = new JButton("消息对话框");
	private JButton confrimBn = new JButton("确认对话框");
	private JButton inputBn = new JButton("输入对话框");
	private JButton optionBn = new JButton("选项对话框");

	public void init()
	{
		JPanel top = new JPanel();
		top.setBorder(new TitledBorder(new EtchedBorder(), "对话框的通用选项" , 
			TitledBorder.CENTER ,TitledBorder.TOP ));
		top.setLayout(new GridLayout(1 , 2));
		//消息类型Panel，该Panel中的选项决定对话框的图标
		messageTypePanel = new ButtonPanel("选择消息的类型", 
			new String[]{"ERROR_MESSAGE", "INFORMATION_MESSAGE", "WARNING_MESSAGE", 
			"QUESTION_MESSAGE",	"PLAIN_MESSAGE" });
		//消息内容类型的Panel，该Panel中的选项决定对话框的消息区的内容
		messagePanel = new ButtonPanel("选择消息内容的类型", 
			new String[]{"字符串消息", "图标消息", "组件消息",	"普通对象消息" , "Object[]消息"});
		top.add(messageTypePanel);
		top.add(messagePanel);
		JPanel bottom = new JPanel();
		bottom.setBorder(new TitledBorder(new EtchedBorder(), "弹出不同的对话框" , 
			TitledBorder.CENTER ,TitledBorder.TOP));
		bottom.setLayout(new GridLayout(1 , 4));
		//创建用于弹出消息对话框的Panel
		msgPanel = new ButtonPanel("消息对话框", null);
		msgBn.addActionListener(new ShowAction());
		msgPanel.add(msgBn);
		//创建用于弹出确认对话框的Panel
		confirmPanel = new ButtonPanel("确认对话框", 
			new String[]{"DEFAULT_OPTION", "YES_NO_OPTION", "YES_NO_CANCEL_OPTION",
			"OK_CANCEL_OPTION"});
		confrimBn.addActionListener(new ShowAction());
		confirmPanel.add(confrimBn);
		//创建用于弹出输入对话框的Panel
		inputPanel = new ButtonPanel("输入对话框",
			new String[]{"单行文本框","下拉列表选择框"});
		inputBn.addActionListener(new ShowAction());
		inputPanel.add(inputBn);
		//创建用于弹出选项对话框的Panel
		optionsPanel = new ButtonPanel("选项对话框", 
			new String[]{"字符串选项", "图标选项", "对象选项"});
		optionBn.addActionListener(new ShowAction());
		optionsPanel.add(optionBn);
		bottom.add(msgPanel);
		bottom.add(confirmPanel);
		bottom.add(inputPanel);
		bottom.add(optionsPanel);
		Box box = new Box(BoxLayout.Y_AXIS);
		box.add(top);
		box.add(bottom);
		jf.add(box);
		jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		jf.pack();
		jf.setVisible(true);
	}
	//根据用户选择返回选项类型
	private int getOptionType()
	{
		if (confirmPanel.getSelection().equals("DEFAULT_OPTION"))
			return JOptionPane.DEFAULT_OPTION;
		else if (confirmPanel.getSelection().equals("YES_NO_OPTION"))
			return JOptionPane.YES_NO_OPTION;
		else if (confirmPanel.getSelection().equals("YES_NO_CANCEL_OPTION"))
			return JOptionPane.YES_NO_CANCEL_OPTION;
		else
			return JOptionPane.OK_CANCEL_OPTION;
	}
	//根据用户选择返回消息
	private Object getMessage()
	{
		if (messagePanel.getSelection().equals("字符串消息"))
			return messageString;
		else if (messagePanel.getSelection().equals("图标消息"))
			return messageIcon;
		else if (messagePanel.getSelection().equals("组件消息"))
			return messageComponent;
		else if(messagePanel.getSelection().equals("普通对象消息"))
			return messageObject;
		else
			return  new Object[]{messageString , messageIcon , 
				messageObject , messageComponent};
	}
	//根据用户选择返回消息类型（决定图标区的图标）
	private int getDialogType()
	{
		if (messageTypePanel.getSelection().equals("ERROR_MESSAGE"))
			return JOptionPane.ERROR_MESSAGE;
		else if (messageTypePanel.getSelection().equals("INFORMATION_MESSAGE"))
			return JOptionPane.INFORMATION_MESSAGE;
		else if (messageTypePanel.getSelection().equals("WARNING_MESSAGE"))
			return JOptionPane.WARNING_MESSAGE;
		else if(messageTypePanel.getSelection().equals("QUESTION_MESSAGE"))
			return JOptionPane.QUESTION_MESSAGE;
		else
			return JOptionPane.PLAIN_MESSAGE;
	}
	private Object[] getOptions()
	{
		if (optionsPanel.getSelection().equals("字符串选项"))
			return new String[]{"a" , "b" , "c" , "d"};
		else if (optionsPanel.getSelection().equals("图标选项"))
			return new Icon[]{new ImageIcon("ico/1.gif") , new ImageIcon("ico/2.gif"),
			new ImageIcon("ico/3.gif"),new ImageIcon("ico/4.gif")};
		else
			return new Object[]{new Date() ,new Date() , new Date()};
	}

	//为各按钮定义事件监听器
	private class ShowAction implements ActionListener
	{
		public void actionPerformed(ActionEvent event)
		{  
			if (event.getActionCommand().equals("确认对话框"))
			{
				JOptionPane.showConfirmDialog(jf , getMessage(),"确认对话框", 
					getOptionType(), getDialogType());
			}
			else if (event.getActionCommand().equals("输入对话框"))
			{  
				if (inputPanel.getSelection().equals("单行文本框"))
				{
					JOptionPane.showInputDialog(jf,	getMessage(), "输入对话框", getDialogType());
				}
				else
				{
					JOptionPane.showInputDialog(jf,	getMessage(), "输入对话框", getDialogType(),
					null,	new String[] {"轻量级J2EE企业应用实战", "Struts2权威指南"}, 
					"Struts2权威指南");
				}
			}
			else if (event.getActionCommand().equals("消息对话框"))
			{
				JOptionPane.showMessageDialog(jf,getMessage(),"消息对话框",getDialogType());
			}
			else if (event.getActionCommand().equals("选项对话框"))
			{
				JOptionPane.showOptionDialog(jf , getMessage() , "选项对话框", getOptionType(),
					getDialogType(), null,	getOptions(), "a");
			}
		}
	}

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

//定义一个JPanel类扩展类，该类的对象包含多个纵向排列的JRadioButton控件
//且Panel扩展类可以指定一个字符串作为TitledBorder
class ButtonPanel extends JPanel
{  
	private ButtonGroup group;
	public ButtonPanel(String title, String[] options)
	{  
		setBorder(BorderFactory.createTitledBorder(BorderFactory.createEtchedBorder(), title));
		setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
		group = new ButtonGroup();
		for (int i = 0; options!= null && i < options.length; i++)
		{  
			JRadioButton b = new JRadioButton(options[i]);
			b.setActionCommand(options[i]);
			add(b);
			group.add(b);
			b.setSelected(i == 0);
		}
	}
	//定义一个方法，用于返回用户选择的选项
	public String getSelection()
	{  
		return group.getSelection().getActionCommand();
	}   
}