mainpanel.java

Java程序设计大学教程程序源代码

/*
 * MainPanel.java
 * Java应用程序转化为applet的演示
 * Created on 2005年7月15日, 下午3:12
 */

package jbookch8;

import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
import java.net.*;

public class MainPanel extends javax.swing.JPanel {
    /** MainPanel构造函数 */
    public MainPanel(URL url) {
        try {
            UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
        } catch (Exception e){
            e.printStackTrace();
        }
        fileURL=url;
        initComponents();
        //startButton.setEnabled(false);
        keyRB[0]=keyA;
        keyRB[1]=keyB;
        keyRB[2]=keyC;
        keyRB[3]=keyD;
        optionsPanel.setVisible(false);
        setup.setVisible(true);
        open();
        setup.setCount( groupCount );
    }
    
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    private void initComponents() {
        java.awt.GridBagConstraints gridBagConstraints;
        
        optionsPanel = new javax.swing.JPanel();
        keyA = new javax.swing.JRadioButton();
        keyB = new javax.swing.JRadioButton();
        keyC = new javax.swing.JRadioButton();
        keyD = new javax.swing.JRadioButton();
        buttonPanel = new javax.swing.JPanel();
        startButton = new javax.swing.JButton();
        //setupButton = new javax.swing.JButton();
        testWord = new javax.swing.JLabel();
        jScrollPane1 = new javax.swing.JScrollPane();
        trace = new javax.swing.JTextArea();
        
        setLayout(new java.awt.GridBagLayout());
        
        optionsPanel.setLayout(new javax.swing.BoxLayout(optionsPanel, javax.swing.BoxLayout.Y_AXIS));
        
        keyA.setLabel("A");
        keyA.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                keyChosen(evt);
            }
        });
        
        optionsPanel.add(keyA);
        
        keyB.setLabel("B");
        keyB.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                keyChosen(evt);
            }
        });
        
        optionsPanel.add(keyB);
        
        keyC.setLabel("C");
        keyC.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                keyChosen(evt);
            }
        });
        
        optionsPanel.add(keyC);
        
        keyD.setLabel("D");
        keyD.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                keyChosen(evt);
            }
        });
        
        optionsPanel.add(keyD);
        
        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridx = 0;
        gridBagConstraints.gridy = 1;
        gridBagConstraints.gridwidth = 2;
        gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
        gridBagConstraints.ipadx = 0;
        gridBagConstraints.ipady =0;
        gridBagConstraints.anchor = java.awt.GridBagConstraints.NORTHWEST;
        gridBagConstraints.insets = new java.awt.Insets(40, 23, 0, 0);
        JPanel leftPanel = new javax.swing.JPanel();
        leftPanel.add(optionsPanel);//
        leftPanel.add(setup);//
        add(leftPanel, gridBagConstraints);//
        
        startButton.setText("\u5f00\u59cb");
        startButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                testWord(evt);
            }
        });
        
        buttonPanel.add(startButton);
        /*
        setupButton.setText("\u8bbe\u7f6e");
        setupButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                setupButtonActionPerformed(evt);
            }
        });
         
        buttonPanel.add(setupButton);
         */
        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridx = 0;
        gridBagConstraints.gridy = 2;
        gridBagConstraints.gridwidth = 2;
        gridBagConstraints.gridheight = 4;
        gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
        gridBagConstraints.ipadx = 144;
        gridBagConstraints.anchor = java.awt.GridBagConstraints.NORTHWEST;
        gridBagConstraints.insets = new java.awt.Insets(40, 54, 19, 52);
        add(buttonPanel, gridBagConstraints);
        
        testWord.setBackground(java.awt.SystemColor.info);
        testWord.setFont(new java.awt.Font("宋体", 0, 24));
        testWord.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
        testWord.setText("Word Winner");
        testWord.setBorder(new javax.swing.border.SoftBevelBorder(javax.swing.border.BevelBorder.LOWERED));
        testWord.setOpaque(true);
        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridx = 0;
        gridBagConstraints.gridy = 0;
        gridBagConstraints.gridwidth = 2;
        gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
        gridBagConstraints.ipadx = 40;
        gridBagConstraints.ipady = 10;
        gridBagConstraints.insets = new java.awt.Insets(28, 16, 0, 0);
        add(testWord, gridBagConstraints);
        
        jScrollPane1.setViewportView(trace);
        
        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridx = 3;
        gridBagConstraints.gridy = 0;
        gridBagConstraints.gridheight = 3;
        gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
        gridBagConstraints.ipadx = 173;
        gridBagConstraints.ipady = 257;
        gridBagConstraints.anchor = java.awt.GridBagConstraints.WEST;
        gridBagConstraints.weightx = 1.0;
        gridBagConstraints.weighty = 1.0;
        gridBagConstraints.insets = new java.awt.Insets(0, 20, 0, 0);
        add(jScrollPane1, gridBagConstraints);
        
    }
    
    private void keyChosen(java.awt.event.ActionEvent evt) {
        //选择答案
        if (keyRB[keyPosition].isSelected()){
            score++;
            trace.append("\n \u221A");
        }else{
            trace.append("\n \u00D7");
        }
        trace.append("  答案："+keyRB[keyPosition].getText());
        test() ;
    }
    
    private void setupButtonActionPerformed(java.awt.event.ActionEvent evt) {
        // 设置
        setup();
    }
    
    private void testWord(java.awt.event.ActionEvent evt) {
        //测试
        test();
    }
    
    //读入并将词库文件转换为中英文单词列表
    public void loadWords(URL url) {
        try {
            //Reader dataReader=new FileReader(wordfileName);
            Reader dataReader=new InputStreamReader(url.openStream());
            BufferedReader inStream= new BufferedReader(dataReader); // 打开文件流
            String line = inStream.readLine();            // 读文件中的一行
            while (line != null) {
                //将英中词汇对解析成英文、中文单词
                //例如："love=vt.爱" 解析成: "love"和"爱 "
                int posColon=line.indexOf('=');
                if (posColon>0) {
                    String e=line.substring(0,posColon).trim();
                    String c=line.substring(posColon+1).trim();
                    wordsEnglish.add(e) ;
                    wordsChinese.add(c) ;
                }
                line = inStream.readLine();               // 读下一行
            }
            inStream.close();                             // 关闭文件流
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        total=wordsEnglish.size();
        groupCount=total/50;//50个单词分为一组
    }
    
    public void open(){
        /*
        int choice;
        JFileChooser jfc = new JFileChooser();
        jfc.setSize( 400,300 );
        choice = jfc.showOpenDialog( this );
        if ( choice == JFileChooser.APPROVE_OPTION ) {
            String fileName = jfc.getSelectedFile().getAbsolutePath();
            loadWords(fileName);
        }
         **/
        loadWords(fileURL);
        
    }
    
    public void setup(){
       if (!setup.confirmed()) return;
        
        groupIndex = setup.getIndex();
        mode=setup.getMode();
        option=setup.getOption();
        makeTestList();
        startButton.setText("开始");
        startButton.setEnabled(true);
        trace.setText("开始...");
    }
    
    private void makeTestList(){
        java.util.List chosenList1=wordsEnglish;
        java.util.List chosenList2=wordsChinese;
        testList.clear();
        keyList.clear();
        if (option==1)  {
            chosenList1=wordsChinese;
            chosenList2=wordsEnglish;
        }
        if (mode==0){
            //产生随机测试单词
            for (int i=0;i<50;i++){
                int r=(int)(Math.random()*total);
                testList.add(chosenList1.get(r));
                keyList.add(chosenList2.get(r));
            }
        } else{
            //产生顺序测试单词
            for (int i=0;i<50;i++){
                int s=i+groupIndex*50;
                if ( s>(total-1) ) return;
                testList.add(chosenList1.get(s));
                keyList.add(chosenList2.get(s));
            }
        };
        it1=testList.listIterator();
        it2=keyList.listIterator();
        score=0;//计分归0
    }
    
    private void makeKeys(){
        String keyToWord=(String)(it2.next());
        //随机产生假答案
        for (int i=0;i<4;i++){
            int r=(int)(Math.random()*total);
            if (option==0){
                key[i]=(String)(wordsChinese.get(r));
            } else {
                key[i]=(String)(wordsEnglish.get(r));
            }
            //如果随机产生的假答案刚好与真答案相同，则重来。
            if (key[i]==keyToWord)
                i--;
        }
        //随机产生真答案的位置
        keyPosition=(int)(Math.random()*4);
        key[keyPosition]=keyToWord;
        //显示答案选择项
        keyA.setText("A.  "+key[0]);
        keyB.setText("B.  "+key[1]);
        keyC.setText("C.  "+key[2]);
        keyD.setText("D.  "+key[3]);
    };
    
    public void test(){
        if (!optionsPanel.isVisible()) setup();
        if (setup.isVisible())  return;
        
        optionsPanel.setVisible(true);
        if (it1.hasNext()){
            makeKeys();
            String curWord=(String)(it1.next());
            testWord.setText(curWord);
            startButton.setText("下一个");
            String str="\n  "+it1.nextIndex()+"  "+curWord;
            trace.append(str);
            for (int i=0;i<4;i++){
                keyRB[i].setSelected(false);
            }
            
        } else {
            startButton.setText("开始");
            String sum=" 本次成绩: "+(score*2)+"分";
            testWord.setText(sum);
            trace.append("\n"+sum);
            optionsPanel.setVisible(false);
            setup.setVisible(true);
            
        };
        
    }
    
    // 变量声明 - 不进行修改
    private javax.swing.JPanel buttonPanel;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JRadioButton keyA;
    private javax.swing.JRadioButton keyB;
    private javax.swing.JRadioButton keyC;
    private javax.swing.JRadioButton keyD;
    private javax.swing.JPanel optionsPanel;
    private javax.swing.JButton setupButton;
    private javax.swing.JButton startButton;
    private javax.swing.JLabel testWord;
    private javax.swing.JTextArea trace;
    // 变量声明结束
    
    private java.util.List wordsEnglish=new ArrayList(),
            wordsChinese=new ArrayList(),
            testList=new ArrayList(),
            keyList=new ArrayList();
    private  int total,
            groupCount,
            groupIndex,
            mode,
            option,
            keyPosition,
            score;
    private SetUp setup=new SetUp();//
    private ListIterator it1,it2;
    private String key[]={"A","B","C","D"};
    private JRadioButton keyRB[]=new JRadioButton[4];
    private static final int GROUPSIZE=50;
    public URL fileURL;
    
}