Swing Mouse单击JMenu和JPopupMenu的事件

Question

我希望在Swing的菜单和弹出菜单外点击鼠标的Eclipse行为。 基本上，在Eclipse中，当您在菜单外按鼠标时，菜单消失，鼠标按下事件将转发到您用鼠标单击的组件。

令人恼火的是，Swing没有这样做，我无法找到解决方法。

现在，即使使用Windows LAF，我也必须再次单击以使组件注册鼠标单击。

为了响应，只需在桌子上进行

final JPopupMenu popupMenu = new JPopupMenu();
JMenuItem viewProfile = new JMenuItem("View Profile");
viewProfile.addActionListener(new ActionListener() { 
   public void actionPerformed(ActionEvent e) {
   }
});
popupMenu.add(viewProfile);
table.setComponentPopupMenu(popupMenu);

编辑：这是一个测试代码。 我不认为将鼠标监听器添加到每个简单组件是很方便的，这样他们就可以在弹出菜单后注册鼠标点击。 在下面的示例中，Table确实实现了它，但没有实现Button。

import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JPopupMenu;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.table.DefaultTableModel;

public class TestMouse {

   public static void main(String[] args) {
      new TestMouse();
   }

   private JLabel  counter;

   private int     count;

   private JPanel  northPanel;

   private JButton clickMe;

   public TestMouse() {
      EventQueue.invokeLater(new Runnable() {

         @Override
         public void run() {
            try {
               UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
            } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
            }

            DefaultTableModel model = new DefaultTableModel(new Object[] { "A", "B", "B", "B", "B", "B", "B" }, 10);
            JTable table = new JTable(model);

            northPanel = new JPanel();

            clickMe = new JButton("Button");
            clickMe.addActionListener(new ActionListener() {

               @Override
               public void actionPerformed(ActionEvent e) {
                  System.out.println("clicked");
                  count++;
               }
            });
            counter = new JLabel("0");

            northPanel.add(counter);
            northPanel.add(clickMe);

            final JPopupMenu popupMenu = new JPopupMenu();
            JMenuItem viewProfile = new JMenuItem("View Profile");
            viewProfile.addActionListener(new ActionListener() {
               public void actionPerformed(ActionEvent e) {
               }
            });
            popupMenu.add(viewProfile);
            table.setComponentPopupMenu(popupMenu);
            table.addMouseListener(new MouseAdapter() {

               @Override
               public void mouseClicked(MouseEvent e) {
                  System.out.println("clicked");
                  count++;
                  counter.setText(String.valueOf(count));
               }

            });

            JFrame frame = new JFrame("Testing");
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            frame.setLayout(new BorderLayout());
            frame.add(northPanel, BorderLayout.NORTH);
            frame.add(new JScrollPane(table));
            frame.pack();
            frame.setLocationRelativeTo(null);
            frame.setVisible(true);
         }
      });
   }

}

Answer 1

我似乎无法复制这个问题。

当我右键单击该表时，会出现弹出菜单，当我再次单击该表时（要关闭弹出窗口），将触发mouseClicked事件。

注意北方位置的计数器......

import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenuItem;
import javax.swing.JPopupMenu;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.table.DefaultTableModel;

public class TestMouse {

    public static void main(String[] args) {
        new TestMouse();
    }

    private JLabel counter;
    private int count;

    public TestMouse() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
                }

                DefaultTableModel model = new DefaultTableModel(
                        new Object[]{"A", "B", "B", "B", "B", "B", "B"},
                        10
                );
                JTable table = new JTable(model);
                counter = new JLabel("0");

                final JPopupMenu popupMenu = new JPopupMenu();
                JMenuItem viewProfile = new JMenuItem("View Profile");
                viewProfile.addActionListener(new ActionListener() {
                    public void actionPerformed(ActionEvent e) {
                    }
                });
                popupMenu.add(viewProfile);
                table.setComponentPopupMenu(popupMenu);
                table.addMouseListener(new MouseAdapter() {

                    @Override
                    public void mouseClicked(MouseEvent e) {
                        System.out.println("clicked");
                        count++;
                        counter.setText(String.valueOf(count));
                    }

                });

                JFrame frame = new JFrame("Testing");
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.setLayout(new BorderLayout());
                frame.add(counter, BorderLayout.NORTH);
                frame.add(new JScrollPane(table));
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }
        });
    }

}

演示您的问题的实际可运行示例将涉及较少的猜测工作和更好的响应

Answer 2

关闭JMenuBar弹出窗口时我遇到了完全相同的问题，这对我有用：

UIManager.put("PopupMenu.consumeEventOnClose", false);