using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Tanshu.Accounts.Entities;
using Tanshu.Accounts.Contracts;
using Tanshu.Accounts.SqlDAO;
using Tanshu.Accounts.Helpers;
using Tanshu.Common.KeyboardControl;

namespace Tanshu.Accounts.PointOfSale
{
    public partial class DiscountForm : Form
    {
        private IList<ProductGroup> source;
        private IList<UnselectableCheckbox> list;
        private IList<int> selection;
        decimal discount;
        public DiscountForm(IList<ProductGroup> source)
        {
            InitializeComponent();
            this.source = source;
            list = new List<UnselectableCheckbox>();
            selection = new List<int>();
        }

        private void button_Click(object sender, EventArgs e)
        {
            CheckBox button = sender as CheckBox;
            if (button == null)
                return;
            var pg = (ProductGroup)button.Tag;
            if (button.CheckState == CheckState.Checked)
                selection.Add(pg.ProductGroupID);
            else
                selection.Remove(pg.ProductGroupID);
        }
        public decimal Selection(out IList<int> list)
        {
            list = selection;
            return discount;
        }

        private void btnClose_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        private void DiscountForm_Load(object sender, EventArgs e)
        {
            ControlFactory.GenerateGroups(ref flpModifier, ref list, new Point(75, 75), source, new ButtonClickDelegate(button_Click));
        }

        private void txtAmount_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Return && decimal.TryParse(txtAmount.Text, out discount) && discount >= 0 && discount <= 100)
            {
                this.DialogResult = DialogResult.OK;
                this.Close();
            }
            else if (e.KeyCode == Keys.Escape)
            {
                this.DialogResult = DialogResult.Cancel;
                this.Close();
            }
        }

    }
}