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[ld_pvl]

Hello,

I am currently writing some code to implement spinners into table cells. So far I have managed to do that however there is still one thing I could not fix.

If I select a spinner cell and enter a new value using my keyboard then click at another cell, the first spinner cell's value does not update. If I do the same thing but instead of clicking another cell I press Enter, the value of the cell gets updated.

I originally asked this question in Sun's forum but it's been a while no response so I decided to come to this forum. This is the link to the original post: Swing - Spinner Table Cells

And here's the code:

Thank you very much for your help,
LD

import java.awt.*;
import java.util.*;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.table.*;

/**
 * Implement this class to create a column containing spinner cells in a JTable
 */
public class SpinnerColumn extends AbstractCellEditor
        implements TableCellEditor, TableCellRenderer
{
    private JSpinner editSpinner, renderSpinner;
    private JTable table;
    private String[] list;
    private Border originalBorder;
    private Object oldValue, newValue;
    private int edittingRow, edittingCol;

    public SpinnerColumn(JTable table, int column)
    {
        edittingRow = -1;
        edittingCol = -1;
        editSpinner = new JSpinner();
        renderSpinner = new JSpinner();
        originalBorder = editSpinner.getBorder();
        editSpinner.setBorder(new LineBorder(Color.BLUE));
        this.table = table;
        table.getColumnModel().getColumn(column).setCellEditor(this);
        table.getColumnModel().getColumn(column).setCellRenderer(this);
    }

    public SpinnerColumn(String[] list, JTable table, int column)
    {
        editSpinner = new JSpinner();
        editSpinner.setModel(new SpinnerListModel(list));
        renderSpinner = new JSpinner();
        renderSpinner.setModel(new SpinnerListModel(list));
        originalBorder = editSpinner.getBorder();
        editSpinner.setBorder(new LineBorder(Color.BLUE));
        this.list = list;
        this.table = table;
        table.getColumnModel().getColumn(column).setCellEditor(this);
        table.getColumnModel().getColumn(column).setCellRenderer(this);
    }

    public Object getCellEditorValue()
    {
        return editSpinner.getValue();
    }

    public Component getTableCellEditorComponent(JTable table, Object value,
            boolean isSelected, int row, int column)
    {
        // Show the first value when a spinner cell is chosen,
        // either first element of list or 0
        if (list != null) {
            editSpinner.setValue(list[0]);
        } else {
            editSpinner.setValue(0);
        }

        if (value != null) {
            editSpinner.setValue(value);
        }
        return editSpinner;
    }

    public Component getTableCellRendererComponent(JTable table, Object value,
            boolean isSelected, boolean hasFocus, int row, int column)
    {
        if (hasFocus) {
            renderSpinner.setBorder(new LineBorder(Color.BLUE));
        } else {
            renderSpinner.setBorder(originalBorder);
        }

        // *** here's where we set the spinner's value
        if (value == null) {
            if (list != null) {
                renderSpinner.setValue(list[0]);
            } else {
                renderSpinner.setValue(0);
            }
        } else {
            renderSpinner.setValue(value);
        }
        return renderSpinner;
    }

    public boolean isCellEditable(EventObject evt)
    {
        return true;
    }

    // main method for testing purposes only
    public static void main(String[] args)
    {
        javax.swing.SwingUtilities.invokeLater(new Runnable()
        {
            public void run()
            {
                JFrame frame = new JFrame("SpinnerColumn");
                JPanel panel = new JPanel(new GridLayout(1, 1));
                JTable table = new JTable(5, 1);
                String[] items = {"dude", "gal", "rock"};

                SpinnerColumn spinnerColumn = new SpinnerColumn(table, 0);
//                SpinnerColumn spinnerColumn = new SpinnerColumn(items, table, 0);

                panel.add(table);
                frame.setContentPane(panel);
                frame.pack();
                frame.setVisible(true);
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            }
        });
    }
}