GUIInterface.java

import java.awt.*;           //Use the Abstract Window Toolkit
import java.awt.event.*;     //Use the Abstract Window Toolkit event processing
import javax.swing.*;        //To use SWING interface components such as frames


/**
 * The Driver class presents a simple GUI that can be used to search courses. The
 * GUI allows the user to specify a department to use as a search criterion.
 * 
 * @author Computer Science Department 
 * @version November, 2007
 */
public class GUIInterface implements ActionListener
{   private CourseHistory courses = new CourseHistory();
    private JFrame frame = new JFrame("DPU - Course History");
    private JButton submitButton = new JButton("SUBMIT");
    private JComboBox reportCombo = new JComboBox();  
  
    /*
     * The constructor for the Driver class creates the GUI and calls
     * a method to fill the report combo box with initial values. It
     * then displays this comboBox on the pane.
     */
    public GUIInterface()
    {         
       //By default a gridlayout has one row
       frame.getContentPane().setLayout(new GridLayout()); 
       fillReportCombo();
      
       submitButton.addActionListener(this);      //Add the search button's action    
       frame.getContentPane().add(submitButton);
       frame.pack();
       frame.setVisible(true);
   }
      
    
    /*
     * This method fills the reportCombo box with initial values.
     */
    public void fillReportCombo()
    { reportCombo.addItem("COURSE HISTORY");
      reportCombo.addItem("SUMMARY");
      reportCombo.addItem("DIST AREAS");
      reportCombo.addItem("COMPETENCY");
      reportCombo.addItem("FULLREPORT");
      reportCombo.addItem("SORTEDLIST");
      frame.getContentPane().add(reportCombo);
    }
    
    
    /*
     * This method is called when the user clicks on a button in the Interface.
     * The method checks to see if the user clicked on the SUBMIT button.  If so,
     * it prints the selected report.
     *
     */
    public void actionPerformed(ActionEvent event)
    { 
      if (event.getSource().equals(submitButton))
      {   String selectedReport = reportCombo.getSelectedItem().toString();
          if (selectedReport.equals("COURSE HISTORY") )
          {   courses.displayCourseHistory();
          }
          
          if (selectedReport.equals("SUMMARY") )
          {   courses.summaryReport();
          }
          
          if (selectedReport.equals("DIST AREAS") )
          {   courses.distAreaReport();
          }
          
          if (selectedReport.equals("COMPETENCY") )
          {   courses.compReport();
          }
          
          if (selectedReport.equals("FULLREPORT") )
          {   courses.fullReport();
          }
          
          if (selectedReport.equals("SORTEDLIST") )
          {
              courses.sortListGPA();
          }
          
      } 
    }

    public static void main(String[] args) {
      GUIInterface gui = new GUIInterface();
      
    }
}