ITEEDU

11-2-3:输出Option Dialog:

Option Dialog可以让用户自定义对话框类型,比较具有弹性,最大的好处是可以改变按钮上的文字.我们来看下面的例子:

OptionDialog.java

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.util.*;
import com.incors.plaf.alloy.*;
import com.incors.plaf.alloy.themes.glass.*;

public class OptionDialog implements ActionListener {
	JFrame f = null;
	JLabel label = null;

	public OptionDialog() {
		f = new JFrame("OptionPane Demo");
		Container contentPane = f.getContentPane();

		JButton b = new JButton("Show Option Dialog");
		b.addActionListener(this);

		label = new JLabel(" ", JLabel.CENTER);
		contentPane.add(label, BorderLayout.NORTH);
		contentPane.add(b, BorderLayout.CENTER);
		f.pack();
		f.setVisible(true);

		f.addWindowListener(new WindowAdapter() {
			public void windowClosing(WindowEvent e) {
				System.exit(0);
			}
		});
	}

	public static void main(String[] args) {
		SwingUtil.setLookAndFeel();
		new OptionDialog();
	}

	public void actionPerformed(ActionEvent e) {
		String title = "Option Dialog";
		String message = "您喜欢吃汉堡吗？";
		int messageType = JOptionPane.QUESTION_MESSAGE;
		// 由于我们的optionType设置成JOptionPane.YES_NO_CANCEL_OPTION,因此对话框中会有三个按钮.我们在options
		// 的String Arrray中设置这三个按钮的名称,并以options[1]按钮为默认值,若将options参数设为null,系统会原来
		// 的按钮名称来显示.
		int optionType = JOptionPane.YES_NO_CANCEL_OPTION;
		String[] options = { "喜欢", "不喜欢", "取消" };

		int result = JOptionPane.showOptionDialog(f, message, title,
				optionType, messageType, null, options, options[1]);

		if (result == JOptionPane.YES_OPTION)
			label.setText("您选择：喜欢");
		if (result == JOptionPane.NO_OPTION)
			label.setText("您选择：不喜欢");
		if (result == JOptionPane.CANCEL_OPTION)
			label.setText("您选择：取消");
		if (result == JOptionPane.CLOSED_OPTION)
			label.setText("您没做任何选择，并关闭了对话框");
	}
}

class SwingUtil {
	public static final void setLookAndFeel() {
		try {
			Font font = new Font("JFrame", Font.PLAIN, 12);
			Enumeration keys = UIManager.getLookAndFeelDefaults().keys();

			while (keys.hasMoreElements()) {
				Object key = keys.nextElement();
				if (UIManager.get(key) instanceof Font) {
					UIManager.put(key, font);
				}
			}
			AlloyLookAndFeel.setProperty("alloy.isLookAndFeelFrameDecoration",
					"true");
			AlloyTheme theme = new GlassTheme();
			LookAndFeel alloyLnF = new AlloyLookAndFeel(theme);
			UIManager.setLookAndFeel(alloyLnF);
		} catch (UnsupportedLookAndFeelException ex) {
			ex.printStackTrace();
		}
	}
}