What is best way to create popup menu like in eclipse on Ctrl+F6?

Question

I want to create popup menu exactly the same as in eclipse on Ctrl+F6.

It should have JScrollBar and list of Strings where each item has small border.

I have idea to use JDialog but how to make it not display border and close buttons but only JList with scroll bar?

Thank you!

Answer 1

The easiest and most straightforward way is to use the JPopupMenu class. You can add any JComponent to a JPopupMenu, not just JMenuItems.

Here's a button which when clicked, shows a JList in a popup without any close buttons, just with a scroll bar. Wherever the popup (the JList) loses focus, the popup will be automatically closed.

final JButton b = new JButton("Press me");
b.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
        final DefaultListModel<String> model = new DefaultListModel<>();
        for (int i = 0; i < 100; i++)
            model.addElement(i + ".");
        final JList<String> l = new JList<>(model);

        final JPopupMenu pm = new JPopupMenu();
        final JScrollPane sp = new JScrollPane(l);
        // pm.setPreferredSize(new Dimension(100, 300));
        pm.add(sp);
        pm.show(b, 0, 0);
    }
});