/*
 * TableExpandGUI.java
 *
 * Created on July 9, 2007, 3:37 AM
 */

/**
 *
 * @author  kinus
 */
public class TableExpandGUI extends javax.swing.JFrame {
    
    /** Creates new form TableExpandGUI */
    public TableExpandGUI() {
        initComponents();
    }
    
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">//GEN-BEGIN:initComponents
    private void initComponents() {
        jScrollPane1 = new javax.swing.JScrollPane();
        jTable1 = new javax.swing.JTable();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        jTable1.setModel(new javax.swing.table.DefaultTableModel(
            new Object [][] {
                {null, null, null}
            },
            new String [] {
                "Name", "Surname", "Birthday"
            }
        ) {
            Class[] types = new Class [] {
                java.lang.String.class, java.lang.String.class, java.lang.String.class
            };

            public Class getColumnClass(int columnIndex) {
                return types [columnIndex];
            }
        });
        jTable1.addPropertyChangeListener(new java.beans.PropertyChangeListener() {
            public void propertyChange(java.beans.PropertyChangeEvent evt) {
                jTable1PropertyChange(evt);
            }
        });

        jScrollPane1.setViewportView(jTable1);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 375, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 85, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(28, Short.MAX_VALUE))
        );
        pack();
    }// </editor-fold>//GEN-END:initComponents

    private void jTable1PropertyChange(java.beans.PropertyChangeEvent evt) {//GEN-FIRST:event_jTable1PropertyChange

        /*
        * First get the row count of the current table
        * Then check if there is anything in the first column of the last row (or any other column)
        * In the first case there is something so we'll do nothing
        */

        int last = jTable1.getRowCount();

        if (jTable1.getValueAt(last-1,0) == null){
        //first column of last row is empty, so do nothing
        }

        /* Here there is something in the last row so we need to find some way of handling it */

        else{

            /* First create a new array of objects based on the original table
            * The new object needs +1 rows.
            * Then populate the new Object with the values in the old Object
            */

            Object o[][] = new Object[jTable1.getRowCount()+1][jTable1.getColumnCount()];

            for (int i = 0; i < jTable1.getRowCount(); i++){ //loop through the rows
                for (int j = 0; j < jTable1.getColumnCount(); j++){ //loop through the columns
                    o[i][j] = jTable1.getValueAt(i,j); //populate the new Object
                }
            }

            /* Set the last row to null values */

            for (int k = 0; k < jTable1.getColumnCount(); k++){
            o[jTable1.getRowCount()][k] = null;

            }
        
        
            jTable1.setModel(new javax.swing.table.DefaultTableModel(
            o, new String [] {
             "Firstname", "Surname", "Birthday"
             }
         )

           {
            Class[] types = new Class [] {
            java.lang.String.class, java.lang.String.class, java.lang.String.class
            };

           public Class getColumnClass(int columnIndex) {
            return types [columnIndex];
         }
            });
        }
    }//GEN-LAST:event_jTable1PropertyChange
       
 
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new TableExpandGUI().setVisible(true);
            }
        });
    }
    
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTable jTable1;
    // End of variables declaration//GEN-END:variables
    
}