testingpanel.java

一个带界面的在线测试系统

        this.updateInfo();
    }//GEN-LAST:event_submitActionPerformed

    private void nextItemActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_nextItemActionPerformed
// TODO 将在此处添加您的处理代码：
        this.sum += this.curItem.getScore();//放弃是肯定没分的！
        this.showNextItem();
        this.updateInfo();
    }//GEN-LAST:event_nextItemActionPerformed
    
    
    // 变量声明 - 不进行修改//GEN-BEGIN:variables
    private javax.swing.JPanel ItemArea;
    private javax.swing.JButton exit;
    private javax.swing.JPanel infoArea;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JSeparator jSeparator1;
    private javax.swing.JLabel labelForInfo;
    private javax.swing.JButton nextItem;
    private javax.swing.JPanel opArea;
    private javax.swing.JButton submit;
    private javax.swing.JTextField textFieldForItem;
    private javax.swing.JTextField textFieldForResult;
    private javax.swing.JTextField textFieldForTimer;
    // 变量声明结束//GEN-END:variables
    
    //这是自己加入的变量
    private MainFrame mainFrame;
    private int sum = 0;
    private int score = 0;
    private int count = 0;
    private Item curItem;
    private Timer itemClock;
    private Timer itemWatch;
    
    /**抽取下一题继续进行测试*/
    public void showNextItem(){
        try{
            this.textFieldForItem.setText("                      ");
            this.textFieldForTimer.setText("                      ");
            this.curItem = this.mainFrame.getItemByCondition();
            if (this.curItem != null){
                this.mainFrame.setPickUpStatus(true);

                this.count++;
                this.textFieldForItem.setText("难度："+this.curItem.getDifficulty()+
                        " 分值："+this.curItem.getScore());
                curItem.draw(this.ItemArea);
                
                this.closeTimer();
                if (curItem.getTimeLimit() != 0){
                    
                    this.itemClock = new Timer(this.curItem.getTimeLimit()*1000,
                        new ItemClockListener());
                    this.itemClock.setRepeats(false);
                    this.itemClock.start();//启动倒计时器
                    
                    this.itemWatch = new Timer(this.curItem.getTimeLimit()*100,
                        new ItemWatchListener());
                    this.itemWatch.start();
                    
                }
                
                this.textFieldForResult.setText("您已经做了"
                        + (this.count-1) + "题目，所得分/总分值=" + this.score+"/" + this.sum);
                
                this.mainFrame.repaint();
                this.mainFrame.pack();
            }else {
                if (this.count == 0){
                     this.mainFrame.setPickUpStatus(false);
                     this.mainFrame.reset();
                    //找不到题目的错误
                }else {
                    this.complete();
                }
            }
        }catch(Exception e){
            JOptionPane.showMessageDialog
                             (this,e.toString());
            this.mainFrame.reset();
        }
    }
    
    /**
     *做完题了就运行这个方法,显示成绩
     */
    private void complete(){
        
        this.closeTimer();

        String result = "做完啦！总共做了" + this.count + "题,";
        
        double mark = ((double)this.score) / ((double)this.sum) * 100;
        
        result += "您的得分折合成百分制是:";
        result += (int)mark;
        
        
        JOptionPane.showMessageDialog(this, result);
        
        this.mainFrame.reset();
    }
    
    /**
     *计算分数
     */
    private void countSum(){
        
        this.sum = this.sum + this.curItem.getScore();
        if (this.curItem.isCorrect() == true){
            //只有正确答对了题目才有分数
            this.score += this.curItem.getScore();
        }
        
    }
    
    /**
     * 刷新信息标签
     */
    private void updateInfo(){
        String info = "";
        String condition = this.mainFrame.getConditionType();
        if (condition.equals("random")){
            info += "您选择的是随机测试";
        }else {
            if (condition.equals("all")){
                info += "您选择的是测试全部试题，";
            }else if(condition.equals("id")){
                info += "您选择的是按ID取题，";
            }else if (condition.equals("combination")){
                info += "您选择的是利用组合查询的方式生成试卷，";
            }
        }
        
        this.labelForInfo.setText(info);
    }
    
    /**
     * 主面板调用这个方法开始测试的过程
     */
    public void start(){
        
        this.showNextItem();
        
        this.updateInfo();
        
    }
    
    /**
     *用于实现对做一道题是第时间限制
     */
    class ItemClockListener implements ActionListener{
        
        public void actionPerformed(ActionEvent e){
            
                JOptionPane.showMessageDialog(mainFrame, "时间到啦！将强制开始下一题");

                sum += curItem.getScore();//放弃是肯定没分的！
                showNextItem();
                updateInfo();
                        
        }
    }
    
    /**
     *用于在做题的时候进行倒计时
     */
    class ItemWatchListener implements ActionListener{
        private int count = 1;
        public void actionPerformed(ActionEvent e){
        //题目完成倒计时
            textFieldForTimer.setText("离提交时间还有：" + (
                    curItem.getTimeLimit() - this.count ) + "秒");
            this.count++;
            
            if (this.count == 10){
                textFieldForTimer.setText("时间到！");
                itemWatch.stop();
            }
        
        }
    }
    
    public void closeTimer(){
        if (this.itemClock != null){
            this.itemClock.stop();//保证之前的计时器已经关闭！
        }
                       
        if(this.itemWatch != null){
            this.itemWatch.stop();
        }
    }
}