import javax.swing.table.*;

public class AddressData extends AbstractTableModel
{
    public static final String COLS[] = {"Name", "Email"};

    private AddressBook book = new AddressBook();
    private boolean isDirty = false;

    public AddressData()
    {   isDirty = false;
    }

    public int getColumnCount()
    {   return COLS.length;
    }

    public int getRowCount()
    {   return book.getSize();
    }

    public String getColumnName(int col)
    {   return COLS[col];
    }

    public Object getValueAt(int row, int col)
    {
        Address a = book.getAddress(row);
        if (col == 0)
            return a.getName();
        else
            return a.getEmail();
    }

    public void setValueAt(Object obj, int row, int col)
    {   Address a = book.getAddress(row);
        if (col == 0)
            a.setName(obj.toString());
        else
            a.setEmail(obj.toString());
        fireTableRowsUpdated(row, row);
        isDirty = true;
    }

    public boolean isCellEditable(int row, int col)
    {  return true;
    }

    public void add(Address a)
    {   book.addAddress(a);
        fireTableRowsInserted(book.getSize()-1, book.getSize()-1);
        isDirty = true;
    }

    public void delete(int row)
    {   book.delAddress(row);
        fireTableRowsDeleted(row, row);
        isDirty = true;
    }

    public boolean isDirty()
    {   return isDirty;
    }
}