package cn.edu.xidian.crytoll;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.JLabel;
import javax.swing.UIManager;
import javax.swing.border.EmptyBorder;
import javax.swing.border.TitledBorder;

public class ArrayExample {

    private JFrame frame;
    private JTextField textField;
    private JScrollPane scrollPane;
    private JLabel label_1;
    JTextArea textArea = new JTextArea();
    private JTextArea textArea_1;

    /**
     * Launch the application.
     */
    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    ArrayExample window = new ArrayExample();
                    window.frame.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }

    /**
     * Create the application.
     */
    public ArrayExample() {
        initialize();
    }

    /**
     * Initialize the contents of the frame.
     */
    private void initialize() {
        frame = new JFrame("利用數組隨機抽取幸運觀眾");
        frame.setBounds(100, 100, 500, 300);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().setLayout(null);

        JLabel label = new JLabel("/u8F93/u5165/u5728/u573A/u89C2/u4F17/u59D3/u540D/u6309/u56DE/u8F66");
        label.setBounds(10, 10, 132, 15);
        frame.getContentPane().add(label);

        textField = new JTextField();
        textField.addKeyListener(new KeyAdapter() {
            @Override
            public void keyPressed(KeyEvent e) {
                do_textField_keyPressed(e);
            }
        });
        textField.setBounds(10, 35, 132, 21);
        frame.getContentPane().add(textField);
        textField.setColumns(10);

        scrollPane = new JScrollPane();
        scrollPane.setBounds(10, 66, 132, 185);
        frame.getContentPane().add(scrollPane);    

        textArea_1 = new JTextArea();
        scrollPane.setViewportView(textArea_1);

        label_1 = new JLabel("/u9009/u53D6/u89C2/u4F17/u4EBA/u5458/uFF1A");
        label_1.setBounds(180, 10, 132, 15);
        frame.getContentPane().add(label_1);

        
        textArea.setBounds(180, 34, 214, 217);
        frame.getContentPane().add(textArea);

        JButton button = new JButton("/u62BD/u53D6");
        button.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                do_button_actionPerformed(e);
            }
        });
        button.setBounds(404, 187, 70, 23);
        frame.getContentPane().add(button);

        JButton button_1 = new JButton("/u9000/u51FA");
        button_1.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                do_button_1_actionPerformed(e);
            }
        });
        button_1.setBounds(404, 228, 70, 23);
        frame.getContentPane().add(button_1);
    }
    protected void do_textField_keyPressed(KeyEvent e) {
        if (e.getKeyChar() != '/n')// 不是回車字符不做處理
            return;
        String name = textField.getText();
        if (name.isEmpty())// 如果文本框沒有字符串不做處理
            return;
        textArea_1.append(name + "/n");// 把輸入人名與回車符添加到人員列表
        textField.selectAll();// 選擇文本框所有字符
    }
    protected void do_button_actionPerformed(ActionEvent e) {
        String perstring = textArea_1.getText();// 獲取人員列表文本
        String[] personnelArray = perstring.split("/n{1,}");// 獲取人員數組
        int index = (int) (Math.random() * personnelArray.length);// 生成隨機數組索引
        // 定義包含格式參數的中獎信息
        String formatArg = "本次抽取觀眾人員：/n/t%1$s/n恭喜%1$5s成為本次觀眾抽獎的大獎得主。"
                + "/n/n我們將為%1$5s頒發：/n/t過期的酸奶二十箱。";
        // 為中獎信息添加人員參數
        String info = String.format(formatArg, personnelArray[index]);
        textArea.setText(info);// 在文本域顯示中獎信息
    }
    protected void do_button_1_actionPerformed(ActionEvent e) {
        System.exit(0);
    }
}