using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using GalaSoft.MvvmLight.Ioc;
using Muchinfo.MTPClient.Data.Enums;
using Muchinfo.MTPClient.Data.Model;
using Muchinfo.MTPClient.Infrastructure.Helpers;
using Muchinfo.MTPClient.Infrastructure.Utilities;
using Muchinfo.MTPClient.IService;
using Muchinfo.MTPClient.Resources;
using Muchinfo.MTPClient.Sale.ViewModels;
using Muchinfo.MTPClient.Service.Utilities;
using Muchinfo.PC.Common.Helpers;

namespace Muchinfo.MTPClient.Sale.Views
{
    /// <summary>
    /// DepositPlanView.xaml 的交互逻辑
    /// </summary>
    public partial class DepositPlanView : UserControl
    {
       

         public EventHandler ScrollButtonClicked;

        #region Private Fields

        private const double Const_ScrollWidth = 60d;
        private ScrollViewer _datagridScrollViewer;  //当前DataGrid滚动条
        private ISystemService _systemService;

        #endregion

        #region Public Properties

        /// <summary>
        /// Gets or sets the current data grid.
        /// </summary>
        /// <value>The current data grid.</value>
        public WPF.Controls.DataGrid.MuchinfoDataGrid CurrentDataGrid
        {
            get;
            set;
        }

        /// <summary>
        /// 获取当前理财DataGrid的滚动条
        /// </summary>
        public ScrollViewer DataGridScrollViewer
        {
            get
            {
                if (_datagridScrollViewer != null)
                {
                    return _datagridScrollViewer;
                }
                _datagridScrollViewer = WPFVisualTreeHelper.FindVisualChild<ScrollViewer>(this.DepositDataGrid);
                return _datagridScrollViewer;
            }
        }

        #endregion

        #region Dependency Properties

        /// <summary>
        /// 是否显示左右滚动条
        /// </summary>
        public Visibility ScrollVisibility
        {
            get { return (Visibility)GetValue(ScrollVisibilityProperty); }
            set { SetValue(ScrollVisibilityProperty, value); }
        }

        // Using a DependencyProperty as the backing store for ScrollVisibility.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty ScrollVisibilityProperty = DependencyProperty.Register("ScrollVisibility", typeof(Visibility), typeof(DepositPlanView), new PropertyMetadata(Visibility.Collapsed));

        #endregion

        #region Public Methods

        /// <summary>
        /// Initializes a new instance of the <see cref=" "/> class.
        /// </summary>
        public DepositPlanView()
        {
            InitializeComponent();

            _systemService = SimpleIoc.Default.GetInstance<ISystemService>();
            this.DataContext = new DepositPlanViewModel();
            BuildDataGridColumns();
            CurrentDataGrid = this.DepositDataGrid;
            RegisterDataGridEvents();
        }

        /// <summary>
        /// 执行与释放或重置非托管资源相关的应用程序定义的任务。
        /// </summary>
        public void Dispose()
        {
             

            MessengerHelper.DefaultUnregister(this);
            var viewModel = this.DataContext as QuerySaleGoodsViewModel;
            if (viewModel != null)
            {
                viewModel.Cleanup();
                if (_datagridScrollViewer != null)
                {
                    _datagridScrollViewer.Resources.Clear();
                    _datagridScrollViewer = null;
                }
            }
            this.Resources.Clear();
            GC.Collect();
        }

        #endregion

        #region Private Methods
        /// <summary>
        /// Registers the data grid events.
        /// </summary>
        private void RegisterDataGridEvents()
        {
            this.DepositDataGrid.LayoutUpdated += (s, e) =>
            {
                OnScrollButtonClicked(null);
                if (DataGridScrollViewer == null) return;
                var canScroll = DataGridScrollViewer.ScrollableWidth == 0;
                ScrollVisibility = canScroll ? Visibility.Collapsed : Visibility.Visible;
            };

          
            
            this.Unloaded += QuerySaleGoodsView_Unloaded;
        }

        private void BuildDataGridColumns()
        {
            var headerList = _systemService.GetQuoteListHeaders(eTradeMode.Deposit);
            var quoteListHeaders = (headerList == null) ? null : headerList.ToList();
            if (quoteListHeaders == null || !quoteListHeaders.Any()) return;

            ////根据QuoteListHeader集合创建行情DataGrid列集合
            var columns = QuoteDataGridHelper.CreateQuoteDataGridColumns(quoteListHeaders);
            if (columns == null || !columns.Any()) return;
            ////清除所有列
            DepositDataGrid.Columns.Clear();
            ////添加列
            foreach (var column in columns)
            {
                DepositDataGrid.Columns.Add(column);
            }
            ////添加操作按钮列
            var operationStackPanel = new StackPanel()
            {
                HorizontalAlignment = HorizontalAlignment.Stretch
            };
            operationStackPanel.Children.Add(new TextBlock() { Text = Client_Resource.Content_Operation, HorizontalAlignment = HorizontalAlignment.Center });
            var operationDataTemplate = this.Resources["OperationDataTemplate"] as DataTemplate;
            var operationColumn = new QuoteDataGridTemplateColumn()
            {
                ////QuoteListHeader设为空，不保存此列
                QuoteListHeader = null,
                Header = operationStackPanel,
                Visibility = Visibility.Visible,
                CellTemplate = operationDataTemplate,
                Width = new DataGridLength(1, DataGridLengthUnitType.Auto),
            };

            DepositDataGrid.Columns.Add(operationColumn);
        }

         

        /// <summary>
        /// 滚动按钮滚动时
        /// </summary>
        /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
        private void OnScrollButtonClicked(EventArgs e)
        {
            if (ScrollButtonClicked != null)
            {
                ScrollButtonClicked(null, e);
            }
        }

       
        #region Route Events
        /// <summary>
        /// Handles the Unloaded event of the QuerySaleGoodsView control.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="RoutedEventArgs"/> instance containing the event data.</param>
        private void QuerySaleGoodsView_Unloaded(object sender, RoutedEventArgs e)
        {
           // Dispose();
        }

        /// <summary>
        /// Handles the OnKeyDown event of the SaleDataGrid control.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="KeyEventArgs"/> instance containing the event data.</param>
        private void DepositDataGrid_OnKeyDown(object sender, KeyEventArgs e)
        {
            if (e.Key == Key.Left)
            {
                if (DataGridScrollViewer == null) return;
                DataGridScrollViewer.ScrollToHorizontalOffset(DataGridScrollViewer.HorizontalOffset - Const_ScrollWidth);
                e.Handled = true;
            }
            else if (e.Key == Key.Right)
            {
                if (DataGridScrollViewer == null) return;
                DataGridScrollViewer.ScrollToHorizontalOffset(DataGridScrollViewer.HorizontalOffset + Const_ScrollWidth);
                e.Handled = true;
            }
        }

        /// <summary>
        /// Handles the OnPreviewMouseWheel event of the SaleDataGrid control.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="MouseWheelEventArgs"/> instance containing the event data.</param>
        private void DepositDataGrid_OnPreviewMouseWheel(object sender, MouseWheelEventArgs e)
        {
            if (e.Delta > 0)
            {
                DataGridScrollViewer.PageUp();
            }
            if (e.Delta < 0)
            {
                DataGridScrollViewer.PageDown();
            }

            e.Handled = true;
        }

        /// <summary>
        /// Handles the OnMouseRightButtonDown event of the SaleDataGrid control.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="MouseButtonEventArgs"/> instance containing the event data.</param>
        private void DepositDataGrid_OnMouseRightButtonDown(object sender, MouseButtonEventArgs e)
        {
            var obj = e.OriginalSource as DependencyObject;
            while (obj != null && !(obj is DataGridColumnHeader))
            {
                obj = VisualTreeHelper.GetParent(obj);
            }
            var header = obj as DataGridColumnHeader;
            if (header != null)
            {
                ////注释掉表头左键菜单，使用统一菜单
                ////header.ContextMenu = _headerContextMenu;
                //var item = QuoteListDataGrid.SelectedItem as QuoteGoodsDTO;
                //if (item == null) return;
                //BuildContextMenu(item);
            }
            else
            {
                var rowContextMenu = new ContextMenu();
                var menuItemStyle = ResourceHelper.GetFromeResource<Style>("ContextCommonMenuItem");
                var row = e.OriginalSource as DependencyObject;
                while (row != null && !(row is DataGridRow))
                {
                    row = VisualTreeHelper.GetParent(row);
                }
                var dataRow = row as DataGridRow;
                if (dataRow != null)
                {
                    var menuItemApply = new MenuItem()
                    {
                        Header = Client_Resource.Resources_Service_DepositOrder,
                        Tag = ContextMenuCommandType.DepositApply,
                        // DataContext = menuItemApply,
                        //Margin = new Thickness(0, 3, 0, 3),
                        Style = menuItemStyle,
                    };
                   
                    menuItemApply.Click += RefreshGoodsList_Click;
                 
                    var plane = dataRow.DataContext as DepositPlan;
                    if (plane != null)
                    {
                        menuItemApply.IsEnabled = UserManager.IsAccountLogin && plane.IsDepositApply;
                    }
                    rowContextMenu.Items.Add(menuItemApply);
                }
                  
                var menuItem = new MenuItem()
                {
                    Header = ContextMenuNames.RefreshGoodsList,
                    Tag = ContextMenuCommandType.RefreshGoodsList,
                    //DataContext = item,
                    Style = menuItemStyle,
                };
               
                menuItem.Click += RefreshGoodsList_Click;
                menuItem.IsEnabled = UserManager.IsAccountLogin;   ////只有账号登录了才有效
                rowContextMenu.Items.Add(menuItem);
                this.DepositDataGrid.ContextMenu = rowContextMenu;
                //}
                //else
                //{
                //    ////在DataGrid外点击右键，取消右键菜单
                //    this.SaleDataGrid.ContextMenu = null;
                //}
            }
        }

        /// <summary>
        /// Handles the Click event of the RefreshGoodsList control.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="RoutedEventArgs"/> instance containing the event data.</param>
        private void RefreshGoodsList_Click(object sender, RoutedEventArgs e)
        {
            var menuItem = sender as MenuItem;
            if (menuItem == null) return;
            var commandType = (ContextMenuCommandType)menuItem.Tag;
            var viewModel = this.DataContext as DepositPlanViewModel;
            switch (commandType)
            {
                case ContextMenuCommandType.RefreshGoodsList:
                    ////刷新商品列表
                    if (viewModel != null)
                    {
                        viewModel.SelectCommand.Execute(null);
                    }
                    break;
                case ContextMenuCommandType.DepositApply:
                    if (viewModel != null)
                    {
                        viewModel.DetailCommand.Execute(null);
                    }
                    break;
            }
        }

        #endregion

        #endregion
    }
}