swing JPopupMenu使用和添加事件

落日映苍穹つ 2022-06-15 09:27 160阅读 0赞

import java.awt.Color;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import java.awt.event.MouseAdapter;  
    import java.awt.event.MouseEvent;  
    import java.util.Vector;  
      
    
    /*
     * 
     * 给弹出菜单做事件，只要每个给菜单项添加事件就行
     */
    
    import javax.swing.*;  
    import javax.swing.table.DefaultTableModel;  
    public class Jpop extends JFrame implements ActionListener{  
        JTable table;  
        DefaultTableModel tableM;  
        JScrollPane jsp;  
        Vector<String> name = new Vector<String>();  
        Vector<String> data = new Vector<String>();  
        
      
        JPopupMenu jpm; 
        JMenuItem jm1,jm2,jm3;
          
        public static void main(String[] args) {  
            // TODO 自动生成的方法存根  
            new Jpop();  
        }  
        Jpop(){  
            name.add("姓名");  
            name.add("年龄");  
            data.add("张三");  
            data.add("19");  
            tableM = new DefaultTableModel(name,0);  
            tableM.addRow(data);  
            tableM.addRow(data);  
            table = new JTable(tableM);  
            jsp = new JScrollPane(table);  
            
            
            //将菜单条放到弹出菜单中
            jm1 = new JMenuItem("变蓝");
            jm2 = new JMenuItem("变红");
            jm3 = new JMenuItem("变白");
            jm1.setBackground(Color.green);
            jm2.setBackground(Color.green);
            jm3.setBackground(Color.green);
            jpm = new JPopupMenu();
            jpm.add(jm1);
            jpm.add(jm2);
            jpm.add(jm3);
            
            jm1.addActionListener(this);
            jm2.addActionListener(this);
            jm3.addActionListener(this);
            
            
            //右键点击表格事件
            table.addMouseListener(new MouseAdapter() {  
                public void mouseClicked(MouseEvent e){  
                    if (e.getButton() == MouseEvent.BUTTON3){  
                        //在table显示  
                        int i = table.rowAtPoint(e.getPoint());  
                        jpm.show(table, e.getX(), e.getY());  
                    }  
                }  
            });  
            this.add(jsp);  
            this.setVisible(true);  
            this.setSize(400, 400);  
            this.setDefaultCloseOperation(EXIT_ON_CLOSE);  
        }
    	@Override
    	public void actionPerformed(ActionEvent e) {
    		if (e.getSource().equals(jm1)){
    			jm1.setBackground(Color.blue);
    			jm2.setBackground(Color.blue);
    			jm3.setBackground(Color.blue);
    		}
    		if (e.getSource().equals(jm2)){
    			jm1.setBackground(Color.red);
    			jm2.setBackground(Color.red);
    			jm3.setBackground(Color.red);
    		}
    		if (e.getSource().equals(jm3)){
    			jm1.setBackground(Color.white);
    			jm2.setBackground(Color.white);
    			jm3.setBackground(Color.white);
    		}
    	}  
    }