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 HCI_Coursework_EVCHARGE
{
    public partial class Pinpad : Form
    {
        TextBox entryBox;

        public Pinpad()
        {
            InitializeComponent();
            this.TopMost = true;
            StartPosition = FormStartPosition.CenterScreen;
        }

        public void setTextBox(TextBox textBox)
        {
            entryBox = textBox;
        }

        private void backspace_Click(object sender, EventArgs e)
        {
            if (entryBox.Text.Length > 0)
            {
                entryBox.Text = entryBox.Text.Substring(0, entryBox.Text.Length - 1);
            }
        }

        private void confirm_Click(object sender, EventArgs e)
        {
            Close();
        }

        private void button_Click(object sender, EventArgs e)
        {
            if ( entryBox.Text.Length < 6 )
            {
                entryBox.Text += ((Button)sender).Text;
            }
            else
            {
                MessageBox.Show("PIN cannot be more than 6 numbers!");
            }
            
        }
    }
}