swing 添加右键菜单

曾经终败给现在 2024-02-24 00:51 235阅读 0赞

import javax.swing.*;
    
    /**
     * 右键菜单
     */
    public class RightClickMenuExample {
        public static void main(String[] args) {
            JFrame frame = new JFrame("Right Click Menu Example");
            JPanel panel = new JPanel();
    
            // 创建右键菜单
            JPopupMenu popupMenu = new JPopupMenu();
            JMenuItem menuItem1 = new JMenuItem("菜单项1");
            menuItem1.addActionListener(e -> {
                System.out.println("e = " + e);
            });
            JMenuItem menuItem2 = new JMenuItem("菜单项2");
            JMenuItem menuItem3 = new JMenuItem("菜单项3");
            popupMenu.add(menuItem1);
            popupMenu.add(menuItem2);
            popupMenu.add(menuItem3);
    
            // 添加鼠标右键监听器
    //        panel.addMouseListener(new MouseAdapter() {
    //            @Override
    //            public void mouseReleased(MouseEvent e) {
    //                if (e.isPopupTrigger()) {
    //                    popupMenu.show(e.getComponent(), e.getX(), e.getY());
    //                }
    //            }
    //        });
            panel.setComponentPopupMenu(popupMenu);
            /*
            panel.setComponentPopupMenu(new JPopupMenus().addMenu("菜单项2", new JPopupMenus.JPopupMenusClick() {
                @Override
                public void click(String str) {
                    System.out.println("str = " + str);
                }
            }).addMenu("菜单项22", new JPopupMenus.JPopupMenusClick() {
                @Override
                public void click(String str) {
                    System.out.println("str = " + str);
                }
            }));*/
    
            frame.getContentPane().add(panel);
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            frame.setSize(300, 200);
            frame.setLocationRelativeTo(null);
            frame.setVisible(true);
        }
    }

工具类

import javax.swing.*;
    
    /**
     * 添加右键菜单
     * <code>JPanel panel = new JPanel();
     * *  panel.setComponentPopupMenu(new JPopupMenus().addMenu("菜单项2", new JPopupMenus.JPopupMenusClick() {
     * *             @Override
     * *             public void click(String str) {
     * *                 System.out.println("str = " + str);
     * *             }
     * *         }).addMenu("菜单项22", new JPopupMenus.JPopupMenusClick() {
     * *             @Override
     * *             public void click(String str) {
     * *                 System.out.println("str = " + str);
     * *             }
     * *         }));
     * </code>
     */
    public class JPopupMenus extends JPopupMenu {
    
        public JPopupMenus() {
        }
    
        public JPopupMenus(String label) {
            super(label);
        }
    
        public JPopupMenus addMenu(String menuItemStr, JPopupMenusClick jPopupMenusClick) {
            JMenuItem menuItem1 = new JMenuItem(menuItemStr);
            menuItem1.addActionListener(e -> {
                jPopupMenusClick.click(menuItemStr);
            });
            add(menuItem1);
            return this;
        }
    
        public interface JPopupMenusClick {
            void click(String str);
        }
    }