package Calculatorver2;
import javax.swing.*;
import java.awt.*;

public class CalculatorJFrame extends JFrame {
    public CalculatorJFrame(){
        initJFrame();

        initJMenuBar();

        this.setVisible(true);
    }

    private void initJMenuBar(){
        JMenuBar Menu = new JMenuBar();

        JMenu m1 = new JMenu("查看(V)");
        JMenu m2 = new JMenu("编辑(E)");
        JMenu m3 = new JMenu("帮助(H)");

        JLabel l1 = new JLabel(" ".repeat(500));
        JLabel l2 = new JLabel(" ".repeat(500));
        JLabel l3 = new JLabel(" ".repeat(500));
        JLabel l4 = new JLabel(" ".repeat(500));
        JLabel l5 = new JLabel(" ".repeat(500));
        JLabel l6 = new JLabel(" ".repeat(500));

        JTextField t1 = new JTextField("                                                                                     0");
        t1.setPreferredSize(new Dimension(300,60));

        JButton b1 = new JButton("MC");
        JButton b2 = new JButton("MR");
        JButton b3 = new JButton("MS");
        JButton b4 = new JButton("M-");
        JButton b5 = new JButton("M+");
        JButton b6 = new JButton("<-- ");
        JButton b7 = new JButton("CE");
        JButton b8 = new JButton("C   ");
        JButton b9 = new JButton("7    ");
        JButton b11 = new JButton("8    ");
        JButton b12 = new JButton("9    ");
        JButton b13 = new JButton("6    ");
        JButton b14 = new JButton("5    ");
        JButton b15 = new JButton("4    ");
        JButton b16 = new JButton("3    ");
        JButton b17 = new JButton("2    ");
        JButton b18 = new JButton("1    ");
        JButton b19 = new JButton("0    ");
        JButton b21 = new JButton("+    ");
        JButton b22 = new JButton("-    ");
        JButton b23 = new JButton("*   ");
        JButton b24 = new JButton("/   ");
        JButton b25 = new JButton("=    ");
        JButton b26 = new JButton("%   ");
        JButton b27 = new JButton(".    ");
        JButton b28 = new JButton("1/x  ");
        JButton b29 = new JButton("√    ");
        JButton b31 = new JButton("±    ");


        Menu.add(m1);
        Menu.add(m2);
        Menu.add(m3);

        this.add(t1);
        this.add(l1);
        this.add(b1);
        this.add(b2);
        this.add(b3);
        this.add(b5);
        this.add(b4);
        this.add(l2);
        this.add(b6);
        this.add(b7);
        this.add(b8);
        this.add(b29);
        this.add(b31);
        this.add(l3);
        this.add(b9);
        this.add(b11);
        this.add(b12);
        this.add(b24);
        this.add(b26);
        this.add(l4);
        this.add(b15);
        this.add(b14);
        this.add(b13);
        this.add(b23);
        this.add(b28);
        this.add(l5);
        this.add(b18);
        this.add(b17);
        this.add(b16);
        this.add(b22);
        this.add(b25);
        this.add(l6);
        this.add(b19);
        this.add(b27);
        this.add(b21);

        this.setJMenuBar(Menu);
    }
    private void initJFrame() {
        this.setSize(425,450);
        this.setTitle("简易计算器");
        this.setLocationRelativeTo(null);
        this.setDefaultCloseOperation(3);
        this.setLayout(new FlowLayout());
    }
}