singletestquestionentryframe.java

简单的在线考试系统 提供添加修改 考试等操作

package olts;

import java.awt.*;
import java.util.*;

import javax.swing.*;
public class SingleTestQuestionEntryFrame extends JInternalFrame{
	/**this class is the subclass of the ILTS GUI which can provide 
	 * users with the question properties to input base on the current
	 * datebase
	 */
	public static final long serialVersionUID = 1L;

	private HashMap<String, JTextField> fields;
	//current TestQuestionEntry information set by Online application
	private TestQuestionEntry question;
	//panels to organize GUI
	private JPanel leftPanel;
	private JPanel rightPanel;
	//static integers used to determine new window positions
	private static int xOffset=0;
	private static int yOffset=0;
	private static final String id="试题编号:";
	private static final String content="试题内容:";
	//private static final String option1="选项A:";
	//private static final String option2="选项B:";
	//private static final String option3="选项C:";
	//private static final String option4="选项D:";
	private static final String answer="试题答案:";
	private static final String difficulty="试题难度:";
	private static final String score="试题分值:";
	private static final String timelimited="答题时限:";
	//constructor to initiate the GUI interface
	public SingleTestQuestionEntryFrame(){
		super("试题信息表单",true,true,true);
		fields=new HashMap<String, JTextField>();
		leftPanel=new JPanel();
		rightPanel=new JPanel();
		leftPanel.setLayout(new GridLayout(10,1,0,5));
		rightPanel.setLayout(new GridLayout(10,1,0,5));
		
		createRow(id);
		createRow(content);
		//createRow(option1);
		//createRow(option2);
		//createRow(option3);
		//createRow(option4);
		createRow(answer);
		createRow(score);
		createRow(difficulty);
		createRow(timelimited);
		
		Container container=getContentPane();
		container.add(leftPanel,BorderLayout.WEST);
		container.add(rightPanel,BorderLayout.CENTER);
		
		setBounds(xOffset,yOffset,800,350);
		//xOffset=(xOffset+30)%300;
		//yOffset=(yOffset+30)%300;		
	}

	public void setTestQuestionEntry(TestQuestionEntry inputQuestion){
		//set TestQuestionEntry then use its properties
		//to place data in each JTextField
		question=inputQuestion;
		setField(id,question.getID());
		setField(content,question.getContent());
		//setField(option1,question.getOption1());
		//setField(option2,question.getOption2());
		//setField(option3,question.getOption3());
		//setField(option4,question.getOption4());		
		setField(answer,question.getAnswer());
		setField(score,question.getScore());
		setField(difficulty,question.getDifficulty());
		setField(timelimited,question.getTimelimited());
	}
	public TestQuestionEntry getTestQuestionEntry(){
		//store TestQuestionEntry data from GUI and return it
		question.setID(getField(id));
		question.setContent(getField(content));
		//question.setOption1(getField(option1));
		//question.setOption2(getField(option2));
		//question.setOption3(getField(option3));
		//question.setOption4(getField(option4));
		question.setAnswer(getField(answer));
		question.setScore(getField(score));
		question.setDifficulty(getField(difficulty));
		question.setTimelimited(getField(timelimited));
		return question;		
	}
	private void createRow(String name){
		//utility method used by container to create one row
		//in GUI containing JLabel and JTextField
		JLabel label=new JLabel(name,SwingConstants.LEFT);
		label.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
		leftPanel.add(label);
		
		JTextField field=new JTextField(250);
		rightPanel.add(field);
		fields.put(name, field);		
	}
	private void setField(String fieldName,String value){
		//set text JTextField by specifying field's name and value
		JTextField field=(JTextField)fields.get(fieldName);
		field.setText(value);		
	}
	private String getField(String fieldName){
		//get text text JTextField by specifying field's name
		JTextField field=(JTextField)fields.get(fieldName);
		return field.getText();		
	}
	//public static void main(String arg[]){
		//TestQuestionEntryFrame t=new TestQuestionEntryFrame();
		//t.setVisible(true);
	//}
}