Re: JTable - Display Boolean as Check Box - Problem Setting Background colour

From:

"Bart Cremers" <bcremers@gmail.com>

Newsgroups:

comp.lang.java.gui

Date:

4 May 2006 22:16:11 -0700

Message-ID:

<1146806171.131623.83330@v46g2000cwv.googlegroups.com>

The DefaultTableCellRenderer simply extends JLabel, so by just
extending that one it will be hard to get to a checkbox.

Following class, taken from the JTable code and adapted to what you
want, could do the work for you:

class BooleanRenderer extends JCheckBox implements TableCellRenderer {
    private static final Border noFocusBorder = new EmptyBorder(1, 1,
1, 1);

    public BooleanRenderer() {
        super();
        setHorizontalAlignment(JLabel.CENTER);
        setBorderPainted(true);
    }

    public Component getTableCellRendererComponent(JTable table,
                                                   Object value,
                                                   boolean isSelected,
                                                   boolean hasFocus,
                                                   int row,
                                                   int column) {
        boolean val = (value != null &&
((Boolean)value).booleanValue());

        if (isSelected) {
            setForeground(table.getSelectionForeground());
            super.setBackground(table.getSelectionBackground());
        } else {
            setForeground(table.getForeground());
            if (val) {
                cell.setBackground(Color.cyan);
            } else {
                setBackground(table.getBackground());
            }
        }
        setSelected(val);

        if (hasFocus) {

setBorder(UIManager.getBorder("Table.focusCellHighlightBorder"));
        } else {
            setBorder(noFocusBorder);
        }

        return this;
    }
}

Regards,

Bart