using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Calculator
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        float num, ans;
        int count;


        public void disable()//Metod za on i off na calc
        {

            textBox1.Enabled = false;
            button1.Show();
            button2.Hide();
            button3.Enabled = false;
            button4.Enabled = false;
            button5.Enabled = false;
            button6.Enabled = false;
            button7.Enabled = false;
            button8.Enabled = false;
            button9.Enabled = false;
            button10.Enabled = false;
            button11.Enabled = false;
            button12.Enabled = false;
            button13.Enabled = false;
            button14.Enabled = false;
            button15.Enabled = false;
            button16.Enabled = false;
            button17.Enabled = false;
            button19.Enabled = false;
            button20.Enabled = false;
            button21.Enabled = false;


        }

        public void Enable()
        {
            textBox1.Enabled = false;
            button1.Hide();
            button2.Show();
            button3.Enabled = true;
            button4.Enabled = true;
            button5.Enabled = true;
            button6.Enabled = true;
            button7.Enabled = true;
            button8.Enabled = true;
            button9.Enabled = true;
            button10.Enabled = true;
            button11.Enabled = true;
            button12.Enabled = true;
            button13.Enabled = true;
            button14.Enabled = true;
            button15.Enabled = true;
            button16.Enabled = true;
            button17.Enabled = true;
            button19.Enabled = true;
            button20.Enabled = true;
            button21.Enabled = true;


        }



        private void button20_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + ".";
            textBox1.ForeColor = Color.Red;
        }

        private void button19_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + "0";
            textBox1.ForeColor = Color.Red;
        }

        private void button15_Click(object sender, EventArgs e)
        {

            textBox1.Text = textBox1.Text + "1";
            textBox1.ForeColor = Color.Red;
        }

        private void button16_Click(object sender, EventArgs e)
        {

            textBox1.Text = textBox1.Text + "2";
            textBox1.ForeColor = Color.Red;
        }

        private void button14_Click(object sender, EventArgs e)
        {

            textBox1.Text = textBox1.Text + "3";
            textBox1.ForeColor = Color.Red;
        }

        private void button10_Click(object sender, EventArgs e)
        {

            textBox1.Text = textBox1.Text + "4";
            textBox1.ForeColor = Color.Red;
        }

        private void button11_Click(object sender, EventArgs e)
        {

            textBox1.Text = textBox1.Text + "5";
            textBox1.ForeColor = Color.Red;
        }

        private void button12_Click(object sender, EventArgs e)
        {

            textBox1.Text = textBox1.Text + "6";
            textBox1.ForeColor = Color.Red;
        }

        private void button6_Click(object sender, EventArgs e)
        {

            textBox1.Text = textBox1.Text + "7";
            textBox1.ForeColor = Color.Red;
        }

        private void button7_Click(object sender, EventArgs e)
        {

            textBox1.Text = textBox1.Text + "8";
            textBox1.ForeColor = Color.Red;
        }

        private void button8_Click(object sender, EventArgs e)
        {

            textBox1.Text = textBox1.Text + "9";
            textBox1.ForeColor = Color.Red;
        }

        private void button2_Click(object sender, EventArgs e) //OFF
        {
            disable();
        }

        private void button1_Click(object sender, EventArgs e) // ON
        {
            Enable();         }
    }

    public void compute()
    {
        switch(count)
        {
            case 1:
                ans = num + float.Parse(TextBox1.Text);
                textBox1.Text = ans.ToString();
                break;

            case 2:
                ans = num - float.Parse(TextBox1.Text);
                textBox1.Text = ans.ToString();
                break;

            case 1:
                ans = num * float.Parse(TextBox1.Text);
                textBox1.Text = ans.ToString();
                break;

            case 1:
                ans = num / float.Parse(TextBox1.Text);
                textBox1.Text = ans.ToString();
                break;

            default:
                break;










        }

    }

}