public Component getToolbarPresenter() {
    final JButton button = DropDownButtonFactory.createDropDownButton(/*replaced anyway*/new ImageIcon(new BufferedImage(16, 16, BufferedImage.TYPE_INT_ARGB)), null);
    Actions.connect(button, this);
    final PropertyChangeListener[] weakPCL = {null};
    PropertyChangeListener pcl = new PropertyChangeListener() {
        public void propertyChange(PropertyChangeEvent evt) {
            String prop = evt != null ? evt.getPropertyName() : null;
            if (prop == null || prop.equals(OpenProjectList.PROPERTY_MAIN_PROJECT) || prop.equals(ProjectConfigurationProvider.PROP_CONFIGURATIONS)) {
                Mutex.EVENT.readAccess(new Runnable() {
                    public void run() {
                        JPopupMenu menu = null;
                        final Project p = OpenProjectList.getDefault().getMainProject();
                        if (p != null) {
                            ActionProvider ap = p.getLookup().lookup(ActionProvider.class);
                            if (ap != null) {
                                if (Arrays.asList(ap.getSupportedActions()).contains(command)) {
                                    final ProjectConfigurationProvider<?> pcp = p.getLookup().lookup(ProjectConfigurationProvider.class);
                                    if (pcp != null) {
                                        pcp.removePropertyChangeListener(weakPCL[0]);
                                        pcp.addPropertyChangeListener(weakPCL[0]);
                                        if (pcp.configurationsAffectAction(command) && pcp.getConfigurations().size() > 1) {
                                            menu = new JPopupMenu();
                                            for (final ProjectConfiguration config : pcp.getConfigurations()) {
                                                JMenuItem item = new JMenuItem(config.getDisplayName());
                                                menu.add(item);
                                                item.addActionListener(new ActionListener() {
                                                    public void actionPerformed(ActionEvent e) {
                                                        p.getLookup().lookup(ActionProvider.class).invokeAction(command, Lookups.singleton(config));
                                                    }
                                                });
                                            }
                                        }
                                    }
                                }
                            }
                        }
                        button.putClientProperty(DropDownButtonFactory.PROP_DROP_DOWN_MENU, menu);
                    }
                });
            }
        }
    };
    button.putClientProperty("listener", pcl); // avoid premature GC
    weakPCL[0] = WeakListeners.propertyChange(pcl, null);
    OpenProjectList.getDefault().addPropertyChangeListener(weakPCL[0]);
    pcl.propertyChange(null);
    return button;
}