HKC/DM_Weight/ViewModels/SurgeryTakeWindowViewModel.cs

using DM_Weight.Models;
using DM_Weight.msg;
using DM_Weight.select;
using DM_Weight.util;
using Prism.Commands;
using Prism.Events;
using Prism.Mvvm;
using Prism.Regions;
using Prism.Services.Dialogs;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace DM_Weight.ViewModels
{
    public class SurgeryTakeWindowViewModel : BindableBase, IConfirmNavigationRequest, IRegionMemberLifetime
    {
        private int _pageNum = 1;
        public int PageNum
        {
            get => _pageNum;
            set
            {
                SetProperty(ref _pageNum, value);
                RequestData();
            }
        }

        private int _pageCount = 1;
        public int PageCount
        {
            get => _pageCount;
            set
            {
                SetProperty(ref _pageCount, value);
            }
        }

        private int _pageSize = 8;
        public int PageSize
        {
            get => _pageSize;
            set
            {
                SetProperty(ref _pageSize, value);
            }
        }

        private int _totalCount = 0;
        public int TotalCount
        {
            get => _totalCount;
            set
            {
                SetProperty(ref _totalCount, value);
            }
        }


        IDialogService _dialogService;
        IEventAggregator _eventAggregator;

        private DelegateCommand _rowSelected;

        public DelegateCommand RowSelected => _rowSelected ??= new DelegateCommand(OpenOrderDialog);


        public SurgeryTakeWindowViewModel(IDialogService DialogService, IEventAggregator eventAggregator)
        {
            _dialogService = DialogService;
            _eventAggregator = eventAggregator;
        }

        public static List<OrderTakeSelect> StaticOrderTakeSelects = new()
        {
            new OrderTakeSelect
            {
                Code = "OrderNo",
                Name = "手术号"
            }
        }; 
        private SurgicalSchedule? _selectedSurgicalSchedule;

        public SurgicalSchedule? SelectedSurgicalSchedule
        {
            get { return _selectedSurgicalSchedule; }
            set
            {
                SetProperty(ref _selectedSurgicalSchedule, value);

                //OpenOrderDialog();
            }
        }


        private string _scheduleTime = DateTime.Now.ToString("yyyy-MM-dd");
        /// <summary>
        /// 查询条件  手术计划开始时间
        /// </summary>
        public string ScheduleTime
        {
            get { return _scheduleTime; }
            set
            {
                if (!String.IsNullOrEmpty(value))
                {
                    SetProperty(ref _scheduleTime, DateTime.Parse(value).ToString("yyyy-MM-dd"));
                }
                else
                {
                    SetProperty(ref _scheduleTime, value);
                }

                RequestData();
            }
        }

        private string? _searchValue;

        /// <summary>
        /// 查询条件 查询字段值
        /// </summary>
        public string? SearchValue
        {
            get { return _searchValue; }
            set
            {
                SetProperty(ref _searchValue, value);
                RequestData();
            }
        }

        private List<SurgicalSchedule> _surgicalSchedule = new();

        public List<SurgicalSchedule> _SurgicalSchedule { get { return _surgicalSchedule; } set { SetProperty(ref _surgicalSchedule, value); } }

        public bool KeepAlive => false;

        public async void OpenOrderDialog()
        {
            if (SelectedSurgicalSchedule != null && SelectedSurgicalSchedule.DmStatus == 0 && SelectedSurgicalSchedule.HisState == 1)
            {
                // 此处延时1毫秒，等待页面渲染
                await Task.Delay(TimeSpan.FromMilliseconds(1));
                DialogParameters dialogParameters = new DialogParameters();
                dialogParameters.Add("SurgeryInfo", SelectedSurgicalSchedule);
                DialogServiceExtensions.ShowDialogHost(_dialogService, "SurgeryTakeDialog", dialogParameters, DoDialogResult, "RootDialog");

            }

        }

        private void DoDialogResult(IDialogResult dialogResult)
        {
            // 委托   被动执行     被子窗口执行
            // dialogResult  第一方面可以拿到任意参数   第二方面   可判断关闭状态
            //if(dialogResult.Result == ButtonResult.OK)
            //{
            SelectedSurgicalSchedule = null;
            RequestData();
            //}
            //MessageBox.Show("返回值：" + dialogResult.Result.ToString());
        }


        //这个方法用于拦截请求,continuationCallback(true)就是不拦截，continuationCallback(false)拦截本次操作
        public void ConfirmNavigationRequest(NavigationContext navigationContext, Action<bool> continuationCallback)
        {
            continuationCallback(true);
        }
        /// <summary>
        /// 录入手术
        /// </summary>
        public DelegateCommand AddSurgeryCommand
        {
            get => new DelegateCommand(() => {
                DialogServiceExtensions.ShowDialogHost(_dialogService, "AddSurgeryDialog", null, DoDialogResult, "RootDialog");
            });
        }

        public DelegateCommand QueryCommand
        {
            get => new DelegateCommand(() =>
            {
                RequestData();
            });
        }

        public void RequestData()
        {
            _SurgicalSchedule.Clear();
            int totalCount = 0;
            List<SurgicalSchedule> queryData = SqlSugarHelper.Db.Queryable<SurgicalSchedule>()
                .WhereIF(ScheduleTime != null, ss => ss.ScheduleTime.ToString("yyyy-MM-dd") == ScheduleTime)
                .WhereIF(!String.IsNullOrEmpty(SearchValue), ss => ss.OperationId == SearchValue) 
                .Where(ss => ss.DmStatus == 0)
                .Where(ss => ss.HisState == 1) 
                .GroupBy(ss => ss.OperationId)
                .ToPageList(PageNum, PageSize, ref totalCount);
            _SurgicalSchedule = queryData;
            TotalCount = totalCount;
            PageCount = (int)Math.Ceiling((double)TotalCount / PageSize);
        } 
        public bool IsNavigationTarget(NavigationContext navigationContext)
        {
            return true;
        }

        public void OnNavigatedFrom(NavigationContext navigationContext)
        {
            // 取消消息订阅
            _eventAggregator.GetEvent<PortUtilEvent>().Unsubscribe(DoMyPrismEvent);
        }
        void DoMyPrismEvent(DeviceMsg msg)
        {
            if (msg.EventType == EventType.CODESCAN)
            {
                SearchValue = msg.Code;
            }

        }
        public void OnNavigatedTo(NavigationContext navigationContext)
        {
            _eventAggregator.GetEvent<PortUtilEvent>().Subscribe(DoMyPrismEvent);
            RequestData();
        }
    }
}