event for check box in jtable header

Question

hi i have a jtable with checkbox in column and column header

problem is if i click on the first column header, the first column header is select and the the second one

    String[] columnNames = {"Am", "Pm", "Integer", "String"};
    Object[][] data = {{true, true, 1, "BBB"}, {false, true, 12, "AAA"},
        {true, false, 2, "DDD"}, {false, false, 5, "CCC"},
        {true, true, 3, "EEE"}, {false, false, 6, "GGG"},
        {true, true, 4, "FFF"}, {false, false, 7, "HHH"}};
    DefaultTableModel model = new DefaultTableModel(data, columnNames) {

        @Override
        public Class<?> getColumnClass(int column) {
            return getValueAt(0, column).getClass();
        }
    };
    JTable table = new JTable(model);
    table.getColumnModel().getColumn(0).setHeaderRenderer(
            new HeaderRenderer2(table.getTableHeader()));


    table.getColumnModel().getColumn(1).setHeaderRenderer(
            new HeaderRenderer2(table.getTableHeader()));

i created a table cell renderer

public class HeaderRenderer2 implements TableCellRenderer {

private final JCheckBox check = new JCheckBox();

public HeaderRenderer2(JTableHeader header) {
    check.setOpaque(false);
    check.setFont(header.getFont());
    header.addMouseListener(new MouseAdapter() {

        @Override
        public void mouseClicked(MouseEvent e) {
            JTable table = ((JTableHeader) e.getSource()).getTable();
            TableColumnModel columnModel = table.getColumnModel();
            int viewColumn = columnModel.getColumnIndexAtX(e.getX());
            int modelColumn = table.convertColumnIndexToModel(viewColumn);
            if (modelColumn == 0) {
                check.setSelected(!check.isSelected());
                TableModel m = table.getModel();
                Boolean f = check.isSelected();
                for (int i = 0; i < m.getRowCount(); i++) {
                    m.setValueAt(f, i, 0);
                }
                ((JTableHeader) e.getSource()).repaint();
            }
        }
    });
}

@Override
public Component getTableCellRendererComponent(
        JTable tbl, Object val, boolean isS, boolean hasF, int row, int col) {
    TableCellRenderer r = tbl.getTableHeader().getDefaultRenderer();
    JLabel l = (JLabel) r.getTableCellRendererComponent(tbl, val, isS, hasF, row, col);
    l.setIcon(new CheckBoxIcon(check));
    return l;
}

private static class CheckBoxIcon implements Icon {

    private final JCheckBox check;

    public CheckBoxIcon(JCheckBox check) {
        this.check = check;
    }

    @Override
    public int getIconWidth() {
        return check.getPreferredSize().width;
    }

    @Override
    public int getIconHeight() {
        return check.getPreferredSize().height;
    }

    @Override
    public void paintIcon(Component c, Graphics g, int x, int y) {
        SwingUtilities.paintComponent(
                g, check, (Container) c, x, y, getIconWidth(), getIconHeight());
    }
}
}

image at the top nothing selected image at the bottom after a click on the column header (AM)

getTableCellRendererComponent happen before the mouseClicked event so i'm not able to get the clicked column

any idea?

Answer 1

The problem is in the mouse listener. Both instances are listing for mouse clicks on the header that have a column ==0. Therefore both get checked or unchecked when you click on that header.