Question

I need to have a JToggleButton (that has custom background) that contains a JPanel with several JLabels within itself. That part works.

This button is placed afterwards in a JTable cell and is meant to be pressed by users. The problem is that i can only press the button on the second click. Apperenty on the first click the focus first jumps to the panel with JLabels and only afterwards to the actual button.

I tried several things to try solving this issue, but the same issue persists.
A) placing the JPanel with labels directly onto the JToggleButton#add().
B) using JLayeredPane to place Button and JPanel onto different Layers where JToggleButton takes constraint Integer(-) so that the JPanel with JLabels stays visible on top

Do you have any tips? Thanks

Below is a sample code that illustrates the problem. Clicking on the button only works second time.

public class ClickableCustomButtonInTable extends JToggleButton {

public ClickableCustomButtonInTable() {
    Dimension d = new Dimension(100, 100);
    JLabel lFirst = new JLabel("1st label");
    lFirst.setPreferredSize(d);

    JLabel lSecond = new JLabel("2nd label");
    lSecond.setPreferredSize(d);

    JPanel panel = new JPanel();
    panel.setOpaque(true);

    panel.setLayout(new BorderLayout());
    panel.add(lFirst, BorderLayout.NORTH);
    panel.add(lSecond, BorderLayout.SOUTH);
    add(panel);
    addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {
            System.out.println("Button clicked");
        }
    });
}

private static class CustomButtonRenderer implements TableCellRenderer {

    private final ClickableCustomButtonInTable button = new ClickableCustomButtonInTable();

    @Override
    public Component getTableCellRendererComponent(JTable table,
            Object value, boolean isSelected, boolean hasFocus, int row,
            int column) {
        return button;
    }
}

private static class CustomButtonEditor extends AbstractCellEditor
        implements TableCellEditor {

    private final ClickableCustomButtonInTable button = new ClickableCustomButtonInTable();

    @Override
    public Object getCellEditorValue() {
        return button.getText();
    }

    @Override
    public Component getTableCellEditorComponent(JTable table,
            Object value, boolean isSelected, int row, int column) {
        return button;
    }

}

public static void main(String[] args) {
    JFrame frame = new JFrame();
    frame.setSize(new Dimension(200, 200));
    Container content = frame.getContentPane();
    TableModel model = new AbstractTableModel() {

        @Override
        public Object getValueAt(int rowIndex, int columnIndex) {
            return null;
        }

        @Override
        public int getRowCount() {
            return 1;
        }

        @Override
        public int getColumnCount() {
            return 1;
        }

        @Override
        public boolean isCellEditable(int rowIndex, int columnIndex) {
            return true;
        }

        @Override
        public Class<?> getColumnClass(int columnIndex) {
            return ClickableCustomButtonInTable.class;
        }
    };

    JTable table = new JTable(model);
    // table.setBounds(new Rectangle(0, 0, content.getWidth(), content
    // .getHeight()));
    table.setRowHeight(frame.getHeight());
    table.setDefaultRenderer(ClickableCustomButtonInTable.class,
            new CustomButtonRenderer());
    table.setDefaultEditor(ClickableCustomButtonInTable.class,
            new CustomButtonEditor());

    content.add(table);
    content.setVisible(true);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setVisible(true);
}
}

Answer 1

http://www.coderanch.com/t/570021/GUI/java/click-event-custom-JToggleButton-JTable