swing - 在后面选择 JPanel parent

Question

下面是SSCCE来描述我的问题。

import java.awt.Color;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import javax.swing.JPanel;

public class APanel extends JPanel{

public APanel() {

    this.setVisible(true);
    this.setBackground(Color.red);
    this.addMouseListener(new MouseListener() {

        public void mouseClicked(MouseEvent e) {
            if(e.getClickCount()==2)
            {

            }
            System.out.println("Child panel clicked!");
        }
        public void mousePressed(MouseEvent e) { }
        public void mouseReleased(MouseEvent e) {}
        public void mouseEntered(MouseEvent e) { }
        public void mouseExited(MouseEvent e) {}
    });
  }
}


    import java.awt.Color;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class PPanel extends JPanel{
    private APanel panel1;
    private APanel panel2;
    private APanel panel3;
    public PPanel() {
        this.setLayout(new GridLayout(0,1));
        panel1 = new APanel();
        panel2 = new APanel();
        panel2.setBackground(Color.yellow);
        panel3 = new APanel();
        panel3.setBackground(Color.green);
        this.add(panel1);
        this.add(panel2);
        this.add(panel3);
        this.setBackground(Color.blue);
         this.addMouseListener(new MouseListener() {
            public void mouseClicked(MouseEvent e) {
                System.out.println("Parent panel clicked!");
            }
            public void mousePressed(MouseEvent e) { }
            public void mouseReleased(MouseEvent e) {}
            public void mouseEntered(MouseEvent e) { }
            public void mouseExited(MouseEvent e) {}
        });
    }

    public static void main(String[] args) {
        JFrame frame = new JFrame();
        PPanel panel = new PPanel();
        frame.add(panel);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(new Dimension(350, 300));
        frame.setTitle("Demo");
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }
}

我怎样才能做到以下几点:

• 如果 e.getClickCount()==1 那么父 MouseListener 将被激活并且它会打印“parent panel clicked!”。

• 如果 e.getClickCount()==2 则子 MouseListner 将激活并打印出“child panel clicked!”。

  Edit1:更接近建议的解决方案。

  import java.awt.*;
  import java.awt.event.*;
  import javax.swing.JPanel;
  import javax.swing.Timer;
  
  public class APanel extends JPanel {
  
  private static final long serialVersionUID = 1L;
  private Point pt;
  
  public APanel() {
      timer.setRepeats(false);
      addMouseListener(new MouseAdapter() {
  
          @Override
          public void mouseClicked(MouseEvent e) {
              if (timer.isRunning() && !e.isConsumed() && e.getClickCount() > 1) {
                  System.out.println("double from child");
                  pt = null;
                  timer.stop();
              } else {
                  pt = e.getPoint();
                  Component component = (Component)e.getSource();
                  component.getParent().dispatchEvent(e);
                  timer.restart();
              }
          }
      });
      setBackground(Color.red);
      setVisible(true);
  }
  
  private Timer timer = new Timer(200, new ActionListener() {
  
      @Override
      public void actionPerformed(ActionEvent e) {
          //System.out.println("single from child");
      }
  });
  

如果鼠标事件需要通过多个容器，这 link可能会感兴趣。

Answer 1

如果您选择解释双击，请考虑使用用户的首选间隔，如建议的那样here .

Toolkit.getDefaultToolkit().getDesktopProperty("awt.multiClickInterval");