import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class VoteDialog extends JPanel {
JLabel label;
JFrame frame;
String simpleDialogDesc = "候选人";
//构造函数
public VoteDialog(JFrame frame) {
this.frame = frame;
JLabel title;
/
/ 创建组件
JPanel choicePanel = createSimpleDialogBox();   
System.out.println("passed createSimpleDialogBox");
title = new JLabel("请您首先选择一个候选人，然后"
+ "单击\"投票\" 按钮",
JLabel.CENTER);
label = new JLabel("现在投票！", JLabel.CENTER);
label.ateEmptyBorder(10,10,10,10));
choicePanel.ateEmptyBorder(20,20,5,20));
// 设置布局
setLayout(new BorderLayout());
add(title, BorderLayout.NORTH); 
add(label, BorderLayout.SOUTH);       
add(choicePanel, BorderLayout.CENTER);
}
void setLabel(String newText) {
label.setText(newText);
}
private JPanel createSimpleDialogBox() {
final int numButtons = 4;
JRadioButton[] radioButtons = new JRadioButton[numButtons];
final ButtonGroup group = new ButtonGroup();
JButton voteButton = null;
final String defaultMessageCommand = "default";
final String yesNoCommand = "yesno";
final String yeahNahCommand = "yeahnah";
final String yncCommand = "ync";
radioButtons[0] = new JRadioButton("<html>1号候选人：<font color=red>小王</font></html>");
radioButtons[0].setActionCommand(defaultMessageCommand);
radioButtons[1] = new JRadioButton("<html>2号候选人：<font color=green>小张</font></html>");
radioButtons[1].setActionCommand(yesNoCommand);
radioButtons[2] = new JRadioButton("<html>3号候选人：<font color=blue>小李</font></html>");
radioButtons[2].setActionCommand(yeahNahCommand);
radioButtons[3] = new JRadioButton("<html>4号候选人：<font color=maroon>小刘</font></html>");
radioButtons[3].setActionCommand(yncCommand);
for (int i = 0; i < numButtons; i++) {
group.add(radioButtons[i]);
}
// 设置默认：选择第一个按钮
radioButtons[0].setSelected(true);
voteButton = new JButton("投票");
voteButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
String command = Selection().getActionCommand();
/
/ ok 对话框
if (command == defaultMessageCommand) {
JOptionPane.showMessageDialog(frame,
"该候选人是坏蛋，投票无效！");
// yes/no 对话框
} else if (command == yesNoCommand) {
int n
= JOptionPane.showConfirmDialog(
frame, "该候选人是一个傀儡 \n您还坚持给她投票吗？",
"确认信息；",
JOptionPane.YES_NO_OPTION);
if (n == JOptionPane.YES_OPTION) {
setLabel("好的，请注意您的收入。");
} else if (n == JOptionPane.NO_OPTION) {
setLabel("哇塞！选的好。");
} else {
setLabel("投票是您神圣的职责！");
}
// yes/no 对话框(自定义)
} else if (command == yeahNahCommand) {
Object[] options = {"是的，我投票", "不，我不投票"};
int n = JOptionPane.showOptionDialog(frame,
"该候选人已经逝世，\n您还坚持投他一票吗？",
"确认信息：",
JOptionPane.YES_NO_OPTION,
JOptionPane.QUESTION_MESSAGE,
null,
options,
options[0]);
if (n == JOptionPane.YES_OPTION) {htmlradio设置默认的按钮
setLabel("我希望您不要对这个候选人有过多的指望。");
} else if (n == JOptionPane.NO_OPTION) {
setLabel("哇塞！选的好！");
} else {
setLabel("投票是您神圣的职责！");
}
// yes/no/cancel 对话框(自定义)
} else if (command == yncCommand) {
Object[] options = {"是的！",
"不，我要弃权",
"让我想一想"};
int n = JOptionPane.showOptionDialog(frame,
"小刘不想参加，您还"
+ "坚持投他一票吗？",
"确认信息：",
JOptionPane.YES_NO_CANCEL_OPTION,
JOptionPane.QUESTION_MESSAGE,
null,
options,
options[2]);
if (n == JOptionPane.YES_OPTION) {
setLabel("优秀的选票。");
} else if (n == JOptionPane.NO_OPTION) {
setLabel("不管怎么说，这是您的选择。");
} else if (n == JOptionPane.CANCEL_OPTION) {
setLabel("我当然不能强迫您投票。");
} else {
setLabel("投票是您神圣的职责！");
}
}
return;
}
});
System.out.println("calling createPane");
return createPane(simpleDialogDesc + ":",
radioButtons,
voteButton);                   
}
private JPanel createPane(String description,
JRadioButton[] radioButtons,
JButton showButton) {
int numChoices = radioButtons.length;
JPanel box = new JPanel();
JLabel label = new JLabel(description);
box.setLayout(new BoxLayout(box, BoxLayout.Y_AXIS));
box.add(label);
for (int i = 0; i < numChoices; i++) {
box.add(radioButtons[i]);
}
JPanel pane = new JPanel();
pane.setLayout(new BorderLayout());
pane.add(box, BorderLayout.NORTH);
pane.add(showButton, BorderLayout.SOUTH);
System.out.println("returning pane");
return pane;
}
public static void main(String[] args) {
JFrame frame = new JFrame("投票对话框");
Container contentPane = ContentPane();
contentPane.setLayout(new GridLayout(1,1));
contentPane.add(new VoteDialog(frame));
// 当关闭窗口时，退出
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setVisible(true);
}
}

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