import java.io.*;    // bring in all the stream i/o stuff
import java.text.*;
import javax.swing.*;


class StudentList extends JTable{

/****************************************************************
 *
 *  this constructor creates the student list and fills it from
 *  the specified file
 *  @param filename - string with the name of the file
 */

    StudentList(){
     super(100,5);   // this needs to go first, setup the vector
}
/****************************************************************
 *
 *  this constructor loads the student list from
 *  the specified file
 *  @param filename - string with the name of the file
 */
 public void load(String filename) throws IOException {
//
// Create a file input stream (if possible)
//
    try{
      String line;
      FileReader file = new FileReader(filename);    // create a file reader stream
      BufferedReader bReader = new BufferedReader(file);  // convert it to a buffered reader so we can use readLine()
      boolean eof = false;
      int row = 0;
      

      while(!eof){  // while not at the end of the file
         line = bReader.readLine();
         if(line == null) // end of file reached ??
           eof= true;  // then exit while loop
         else
          try{
           Student s = new Student(line);
           setValueAt(s.lastName,row,0);
           setValueAt(s.firstName,row,1);
           setValueAt(s.major,row,2);
           setValueAt(s.creditsEarned,row,3);
           setValueAt(s.gradePointAverage,row,4);
           row++;
          }
          catch (ParseException e) {
             System.out.println("StudentList - bad record in file ["+filename+"]");
             System.out.println(e.getMessage());
             // skip record and go on to the next one.
          }
        }
      bReader.close();  // close the file

     }
     catch(IOException e){
       System.out.println("IO Exception when loading studentlist from [" + filename + "] error: " + e.getMessage());
       throw(e);
     }
}
/**
 *
 *  Create a summary report in html format
 *
 */
    void summaryHTMLReport(String filename) {
     int i;
     
     try{     
       HTMLPrinter file = new HTMLPrinter(filename, "Summary Student Report");
    
       file.startCentering();
       file.printHeading("Student List",2);
       file.paragraph();
       file.startTable(1);
       file.startRow();
       file.printBoldCell("Last Name");
       file.printBoldCell("First Name");
       file.printBoldCell("Major");
       file.printBoldCell("Credits Earned");
       file.printBoldCell("Grade Point Average");
       file.endRow();
 
       i=0;
       for(i=0; i < getRowCount(); i++){
          if(getValueAt(i,0) == null)
             break;  
          file.startRow();
          file.printCell((String)getValueAt(i,0));
          file.printCell((String)getValueAt(i,1));
          file.printCell((String)getValueAt(i,2));
          file.printCell((String)getValueAt(i,3));
          file.printCell((String)getValueAt(i,4));
          file.endRow();
       }
      
       file.endTable();
       file.stopCentering();

       file.close();
 
     }
     catch(IOException e) {
        JOptionPane.showMessageDialog(null,"Error writing to file : "+filename, 
         "IOException",JOptionPane.ERROR_MESSAGE);  // popup an error message 

     }
   }



} // end of StudentList class