ActionFactory.java 文件源码

public JMenuItem getPopupMenuItem(JTextComponent target) {

    item = new JCheckBoxMenuItem(NbBundle.getBundle(BaseKit.class).
            getString("line-numbers-menuitem"), isLineNumbersVisible());
    item.addItemListener( new ItemListener() {
        public void itemStateChanged(ItemEvent e) {
            actionPerformed(null,null);
        }
    });
    return item;
}