?? selectsubjectframe.java
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package exam.gui;
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import exam.model.Course;
import exam.web.ExamClient;
/**
*選擇科目界面
* @author 董曉煒
*
*/
public class SelectSubjectFrame {
private ExamClient ec;
private JFrame jf;
private JComboBox jcb;
private JButton jb1,jb2;
private Course[] courses;
public SelectSubjectFrame(ExamClient ec,Course[] courses){
this.ec=ec;
jf=new JFrame("選擇界面");
this.courses=courses;
String[] subjects=new String[courses.length];
for(int i=0;i<subjects.length;i++){
subjects[i]=courses[i].getCourseName();
}
jcb=new JComboBox(subjects);
jb1=new JButton("確定");
jb2=new JButton("退出");
init();
addEventHandler();
showMe();
}
private void init(){
JLabel jl=new JLabel(ec.getStudent().getName()+"歡迎進入達內考試系統");
JLabel jl1=new JLabel("請選擇科目");
JPanel center=new JPanel();
JPanel south=new JPanel();
center.add(jl1);
center.add(jcb);
south.add(jb1);
south.add(jb2);
jf.add(jl,BorderLayout.NORTH);
jf.add(center,BorderLayout.CENTER);
jf.add(south,BorderLayout.SOUTH);
}
private void showMe(){
jf.setLocation(200,200);
jf.pack();
jf.setVisible(true);
jf.setResizable(false);
jf.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
}
private void addEventHandler(){
jb1.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent arg0) {
String subject=(String)jcb.getSelectedItem();
for(Course course:courses){
if(subject.equals(course.getCourseName())){
if(ec.getPaper(course)==null){JOptionPane.showMessageDialog(jf, "服務器暫停中。。。");return;}
break;
}
}
if(ec.getPaper().getQs().size()==0){
JOptionPane.showMessageDialog(jf, "該科目沒有考試!");
}else{
jf.setVisible(false);
new ExamMainFrame(ec);
}
}
});
jb2.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent arg0) {
ec.close();
System.exit(0);
}
});
jf.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent arg0) {
ec.close();
System.exit(0);
}
});
}
public JFrame getJf() {
return jf;
}
}
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