public void click() {
		JPopupMenu menu = new JPopupMenu();
		List<DockTab> tabs = new ArrayList<>(mHidden);
		Collections.sort(tabs);
		for (DockTab tab : tabs) {
			JMenuItem item = new JMenuItem(tab.getFullTitle(), tab.getIcon());
			item.putClientProperty(this, tab.getDockable());
			item.addActionListener(this);
			menu.add(item);
		}
		menu.show(this, 0, 0);
	}