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

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Windows.Forms;
using Tanshu.Accounts.Entities;
using Tanshu.Accounts.Helpers;
using System.Diagnostics;
using Tanshu.Accounts.Repository;

namespace Tanshu.Accounts.PointOfSale
{
    public partial class ReorderTableForm : Form
    {
        private readonly IList<FoodTable> _tableList;
        public ReorderTableForm()
        {
            InitializeComponent();
            using (var bi = new FoodTableBI())
            {
                _tableList = bi.List();
            }
            Selection = null;
        }
        private void button_MouseDown(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left && e.Clicks == 1)
            {
                var button = (Button)sender;
                button.DoDragDrop(button, DragDropEffects.Move);
            }
        }

        private void flpTables_DragEnter(object sender, DragEventArgs e)
        {
            e.Effect = DragDropEffects.All;
        }
        private void flpTables_DragDrop(object sender, DragEventArgs e)
        {
            Button button = (Button)e.Data.GetData(typeof(Button));
            Point p = flpTables.PointToClient(new Point(e.X, e.Y));
            var item = flpTables.GetChildAtPoint(p);
            int index = flpTables.Controls.GetChildIndex(item, false);
            flpTables.Controls.SetChildIndex(button, index);
            flpTables.Invalidate();

            var foodTable = (FoodTable)button.Tag;
            var listIndex = _tableList.IndexOf(foodTable);
            var newIndex = _tableList.IndexOf((FoodTable)((Button)item).Tag);
            _tableList.Remove(foodTable);
            _tableList.Insert(index - 1, foodTable);


        }
        public FoodTable Selection { get; private set; }

        private void MoveTableForm_Load(object sender, EventArgs e)
        {
            GenerateTables(new Point(75, 75));
        }
        private void tableButton_Click(object sender, EventArgs e)
        {
            var button = sender as Button;
            if (button == null)
                return;
            var item = button.Tag as FoodTable;
            Selection = item;
            using (var frm = new TableForm(item.FoodTableID))
            {
                frm.ShowDialog();
            }
        }
        private void GenerateTables(Point size)
        {
            var saveButton = new Button()
            {
                Name = "saveButton",
                Text = "Save",
                Width = size.X,
                Height = size.Y,
            };
            saveButton.Click += saveButton_Click;
            flpTables.Controls.Add(saveButton);
            for (int i = 0; i < _tableList.Count; i++)
            {
                var item = _tableList[i];
                var control = new Button()
                {
                    Name = string.Format("g{0}", i),
                    Text = item.Name,
                    Width = size.X,
                    Height = size.Y,
                    Tag = item,
                    BackColor = item.IsActive ? Color.Green : Color.Red
                };
                control.MouseDown += button_MouseDown;
                control.Click += tableButton_Click;
                flpTables.Controls.Add(control);
            }
            var addButton = new Button()
            {
                Name = "addButton",
                Text = "Add Table",
                Width = size.X,
                Height = size.Y,
            };
            addButton.Click += addButton_Click;
            flpTables.Controls.Add(addButton);
        }
        private void addButton_Click(object sender, EventArgs e)
        {
            using (var frm = new TableForm())
            {
                frm.ShowDialog();
            }
        }
        private void saveButton_Click(object sender, EventArgs e)
        {
            using (var bi = new FoodTableBI())
            {
                bi.UpdateSortOrder(_tableList);
                bi.SaveChanges();
            }
            MessageBox.Show("Order Updated");
        }
    }
}