JOptionPane.showInputDialog with a JList?

Question

Is there any quick and easy way to use the JOptionPane.showInputDialog with a JList? the default is a drop down menu. Thanks!

Answer 1

Is there any quick and easy way to use the
JOptionPane.showInputDialog with a JList? the default
is a drop down menu. Thanks!I have found a way to this. You need to write your own JOptionPane
class MyJOptionPane
    public static Object showListInputDialog(Component parentComponent, Object message, String title, Object[] selecttionValues)
        Object defaultOptionPaneUI = UIManager.get("OptionPaneUI");
        UIManager.put("OptionPaneUI", "MyBasicOptionPaneUI");
        Object object = JOptionPane.showInputDialog(parentComponent, message, title, JOptionPane.PLAIN_MESSAGE, null,
                selecttionValues, selecttionValues[0]);
        UIManager.put("OptionPaneUI", defaultOptionPaneUI);
        return object;
}And then create your own MyBasicOptionPaneUI extending from javax.swing.plaf.basic.BasicOptionPaneUI with 2 methods overridden. The codes are copied from javax.swing.plaf.basic.BasicOptionPaneUI and modified to get rid of JComboBox.
public class MyBasicOptionPaneUI extends BasicOptionPaneUI
    public MyBasicOptionPaneUI()
        super();
    public static ComponentUI createUI(JComponent x) {
         return new MyBasicOptionPaneUI();
    protected Object getMessage()
        inputComponent = null;
        if (optionPane != null) {
            if (optionPane.getWantsInput()) {
                /* Create a user component to capture the input. If the
                   selectionValues are non null  with any size ,
                   it'll be a list, otherwise it'll be a textfield. */
                Object message = optionPane.getMessage();
                Object[] sValues = optionPane.getSelectionValues();
                Object inputValue = optionPane
                        .getInitialSelectionValue();
                JComponent toAdd;
                if (sValues != null) {
                        JList list = new JList(sValues);
                        JScrollPane sp = new JScrollPane(list);
                        list.setVisibleRowCount(10);
                        list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
                        if (inputValue != null)
                            list.setSelectedValue(inputValue, true);
                        list.addMouseListener(new ListSelectionListener());
                        toAdd = sp;
                        inputComponent = list;
                } else {
                    MultiplexingTextField tf = new MultiplexingTextField(20);
                    tf.setKeyStrokes(new KeyStroke[]{
                        KeyStroke.getKeyStroke("ENTER")});
                    if (inputValue != null) {
                        String inputString = inputValue.toString();
                        tf.setText(inputString);
                        tf.setSelectionStart(0);
                        tf.setSelectionEnd(inputString.length());
                    tf.addActionListener(new TextFieldActionListener());
                    toAdd = inputComponent = tf;
                Object[] newMessage;
                if (message == null) {
                    newMessage = new Object[1];
                    newMessage[0] = toAdd;
                } else {
                    newMessage = new Object[2];
                    newMessage[0] = message;
                    newMessage[1] = toAdd;
                return newMessage;
            return optionPane.getMessage();
        return null;
    private static class MultiplexingTextField extends JTextField
        private KeyStroke[] strokes;
        MultiplexingTextField(int cols)
            super(cols);
         * Sets the KeyStrokes that will be additional processed for
         * ancestor bindings.
        void setKeyStrokes(KeyStroke[] strokes)
            this.strokes = strokes;
        protected boolean processKeyBinding(KeyStroke ks, KeyEvent e,
                                            int condition, boolean pressed)
            boolean processed = super.processKeyBinding(ks, e, condition,
                    pressed);
            if (processed && condition != JComponent.WHEN_IN_FOCUSED_WINDOW) {
                for (int counter = strokes.length - 1; counter >= 0;
                     counter--) {
                    if (strokes[counter].equals(ks)) {
                        // Returning false will allow further processing
                        // of the bindings, eg our parent Containers will get a
                        // crack at them.
                        return false;
            return processed;
    private class ListSelectionListener extends MouseAdapter
        public void mousePressed(MouseEvent e)
            if (e.getClickCount() == 2) {
                JList list = (JList) e.getSource();
                int index = list.locationToIndex(e.getPoint());
                optionPane.setInputValue(list.getModel().getElementAt(index));
    private class TextFieldActionListener implements ActionListener
        public void actionPerformed(ActionEvent e)
            optionPane.setInputValue(((JTextField) e.getSource()).getText());
}