narsil/Tanshu.Accounts.PointOfSale/Sales/SettleAmountsForm.cs

using System;
using System.Drawing;
using System.Windows.Forms;
using Tanshu.Accounts.Entities;
using Tanshu.Accounts.Contracts;
using Tanshu.Common.KeyboardControl;

namespace Tanshu.Accounts.PointOfSale
{
    public partial class SettleAmountsForm : Form
    {
        private IKeyboardControl _keyboardControl;
        private readonly decimal _amount;
        private readonly SettleOption _settleOption;
        private decimal _settleAmount;
        public SettleAmountsForm(IKeyboardControl keyboardControl, SettleOption settleOption, decimal amount)
        {
            InitializeComponent();

            _keyboardControl = keyboardControl;
            _amount = amount;
            _settleOption = settleOption;
            _settleAmount = 0;
            var control = keyboardControl as UserControl;
            if (control != null)
            {
                control.Location = new System.Drawing.Point(3, 49);
                this.Controls.Add(control);
                this.Size = this.SizeFromClientSize(new Size(3 + control.Width + 3, 49 + control.Height + 3));
            }

        }



        public decimal AmountSettled
        {
            get
            {
                return _settleAmount;
            }
        }

        private void SettleChoicesFormLoad(object sender, EventArgs e)
        {
            var attribute = (DisplayAttribute)_settleOption.GetType().GetField(_settleOption.ToString()).GetCustomAttributes(typeof(DisplayAttribute), false)[0];
            this.Text = attribute.Name;
            txtAmount.Text = string.Format("Pending Amount: Rs. {0}", _amount);
            txtCurrentAmount.Text = string.Format("{0:#,#00}", _amount);
            txtCurrentAmount.Focus();
        }

        private void TxtCurrentAmountKeyDown(object sender, KeyEventArgs e)
        {
            switch (e.KeyCode)
            {
                case Keys.Escape:
                    _settleAmount = 0;
                    this.Close();
                    break;
                case Keys.Return:
                    {
                        decimal settleAmount;
                        if (!Decimal.TryParse(txtCurrentAmount.Text, out settleAmount))
                            return;
                        if (settleAmount > _amount)
                            settleAmount = _amount;
                        _settleAmount = settleAmount;
                        this.Close();
                    }
                    break;
            }
        }
    }
}