触发JPopupMenu的JPopupMenuItem get组件

Question

我有一个JRadioButton，并为它设置了一个ComponentPopupMenu。

JRadioButton rdbtnTest = new JRadioButton();
rdbtnTest.setComponentPopupMenu(popupMenu);

popupMenu是具有一个JPopupMenuItem的JPopupMenu。JPopupMenuItem有一个MouseListener，所以只要点击一下鼠标，就会打开一个网页。

JPopupMenu popupMenu = new JPopupMenu("GO");
PopupMenuListener popupMenuListener = new MyPopupMenuListener();
popupMenu.addPopupMenuListener(popupMenuListener);
MenuItem openMenuItem = new JMenuItem("Open Webpage");

openMenuItem.addMouseListener(new MouseListener() {
        @Override
        public void mousePressed(MouseEvent arg0) {
            Component comp = arg0.getComponent(); // will only return the JPopupMenuItem
            // Determine the right-clicked radio button and open webpage
        }
popupMenu.add(openMenuItem);

我的问题是:如果我有另一个具有相同popupMenu的JRadioButton rdbtnTest2，我能否确定两个单选按钮中的哪一个触发了JPopupMenu？打开网页时，我需要根据右击的单选按钮传递一个特定的参数。

Answer 1

当您在MouseListener中显示弹出菜单时，只需获取事件源并将其存储在某个位置(调用菜单的单选按钮)。在您的代码中，只需检查弹出调用器。