popuplistener.java

来自「some of the image proceeing samples usin」· Java 代码 · 共 32 行

package frame.listener;

import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JPopupMenu;

public class PopupListener extends MouseAdapter {
    
    private JPopupMenu popup;
    
    
    public PopupListener(JPopupMenu popup) {
        this.popup = popup;
    }
    
    
    public void maybeShowPopup(MouseEvent e) {
        
        if (e.isPopupTrigger()) {
            popup.show(e.getComponent(), e.getX(), e.getY());
        }
    }
    
    public void mouseReleased(MouseEvent e) {
        maybeShowPopup(e);
    }
    
    public void mousePressed(MouseEvent e) {
        maybeShowPopup(e);
    }
}