package com.example;

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class SalesProductManagement extends JFrame implements ActionListener {

    JButton btn1;
    JLabel lab1,lab2,lab3,lab4,lab5,lab6,lab7;
    JTextField text2,text3,text5,text6,text8,text9,text10;
    //    JPasswordField passwordfile;
    JPanel panel1,panel2,panel3;



    SalesProductManagement(){
        super("销售信息管理");
        panel1 = new JPanel();
        panel2 = new JPanel();
        panel3 = new JPanel();
        lab1=new JLabel("名称",JLabel.CENTER);
        lab2=new JLabel("单价",JLabel.CENTER);
        lab3=new JLabel("数量",JLabel.CENTER);
        lab4=new JLabel("总计：",JLabel.CENTER);
        lab5=new JLabel("苹果",JLabel.CENTER);
        lab6=new JLabel("香蕉",JLabel.CENTER);
        lab7=new JLabel("橘子",JLabel.CENTER);

        text2=new JTextField("2"+"元",JTextField.CENTER);
        text3=new JTextField(3);
        text5=new JTextField("3"+"元",JTextField.CENTER);
        text6=new JTextField(3);
        text8=new JTextField("5"+"元",JTextField.CENTER);
        text9=new JTextField(3);
        text10=new JTextField(5);

        btn1=new JButton("结算");
        btn1.addActionListener(this);


        add(panel1);
        panel1.setLayout(new GridLayout(1,3,5,5));
        panel1.add(lab1);
        panel1.add(lab2);
        panel1.add(lab3);
        panel1.setMaximumSize(new Dimension(Integer.MAX_VALUE, 40));
        add(panel2);
        panel2.setLayout(new GridLayout(3,3,5,5));
        panel2.add(lab5);
        panel2.add(text2);
        panel2.add(text3);
        panel2.add(lab6);
        panel2.add(text5);
        panel2.add(text6);
        panel2.add(lab7);
        panel2.add(text8);
        panel2.add(text9);
        panel2.setMaximumSize(new Dimension(Integer.MAX_VALUE, 120));
        add(panel3);
        panel3.setLayout(new GridLayout(1,3,5,5));
        panel3.add(btn1);
        panel3.add(lab4);
        panel3.add(text10);
        panel3.setMaximumSize(new Dimension(Integer.MAX_VALUE, 40));



        setLayout(new GridLayout(3,1));
        setSize(500,500);
        setLocationRelativeTo(null);
        setVisible(true);
    }
    @Override
    public void actionPerformed(ActionEvent e) {
        // 判断事件源是否为结算按钮
        if (e.getSource() == btn1) {
            try {
                // 获取单价（从文本框提取数字部分）
                double applePrice = Double.parseDouble(text2.getText().replace("元", ""));
                double bananaPrice = Double.parseDouble(text5.getText().replace("元", ""));
                double orangePrice = Double.parseDouble(text8.getText().replace("元", ""));

                // 获取数量（处理空输入情况）
                int appleCount = text3.getText().trim().isEmpty() ? 0 : Integer.parseInt(text3.getText().trim());
                int bananaCount = text6.getText().trim().isEmpty() ? 0 : Integer.parseInt(text6.getText().trim());
                int orangeCount = text9.getText().trim().isEmpty() ? 0 : Integer.parseInt(text9.getText().trim());

                // 计算总金额
                double total = (applePrice * appleCount) + (bananaPrice * bananaCount) + (orangePrice * orangeCount);

                // 显示结果，保留两位小数
                text10.setText(String.format("%.2f元", total));
            } catch (NumberFormatException ex) {
                // 处理输入非数字的情况
                JOptionPane.showMessageDialog(this, "请输入有效的数字", "输入错误", JOptionPane.ERROR_MESSAGE);
            }
        }
    }
    public static void main(String[] args) {
        new  SalesProductManagement();
    }
}