WuHan/DM_Weight/ViewModels/ReturnDrugWindowViewModel.cs

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

namespace DM_Weight.ViewModels
{
    public class ReturnDrugWindowViewModel : BindableBase, IConfirmNavigationRequest, IRegionMemberLifetime
    {

        IDialogService _dialogService;

        private DelegateCommand _rowSelected;

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

        public ReturnDrugWindowViewModel(IDialogService DialogService)
        {
            _dialogService = DialogService;
        }
        //刷新
        public DelegateCommand Query
        {
            get => new DelegateCommand(() =>
            {
                RequestData();
            });
        }

        public static List<OrderTakeSelect> StaticSelects = new()
        {
            new OrderTakeSelect
            {
                Code = "DrugName",
                Name = "药品名称"
            },
            new OrderTakeSelect
            {
                Code = "PyCode",
                Name = "拼音码"
            },
            new OrderTakeSelect
            {
                Code = "DrugBarcode",
                Name = "药品条码"
            },
            new OrderTakeSelect
            {
                Code = "DrugId",
                Name = "药品编码"
            }
        };

        private List<OrderTakeSelect> _selects = StaticSelects;

        public List<OrderTakeSelect> Selects
        {
            get { return _selects; }
            set
            {
                SetProperty(ref _selects, value);
            }
        }

        private OrderTakeSelect _selectedItem = StaticSelects[0];
        /// <summary>
        /// 查询条件 查询字段
        /// </summary>
        public OrderTakeSelect SelectedItem
        {
            get { return _selectedItem; }
            set
            {
                SetProperty(ref _selectedItem, value);
                RequestData();
            }
        }

        private MachineRecord? _selectedRecord;

        public MachineRecord? SelectedRecord
        {
            get { return _selectedRecord; }
            set
            {
                SetProperty(ref _selectedRecord, value);

                //OpenOrderDialog();
            }
        }


        private string _queryDate = DateTime.Now.ToString("yyyy-MM-dd");
        /// <summary>
        /// 查询条件  处方日期
        /// </summary>
        public string QueryDate
        {
            get { return _queryDate; }
            set
            {
                if (!String.IsNullOrEmpty(value))
                {
                    SetProperty(ref _queryDate, DateTime.Parse(value).ToString("yyyy-MM-dd"));
                }
                else
                {
                    SetProperty(ref _queryDate, 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<MachineRecord> _machineRecords = new();

        public List<MachineRecord> MachineRecords { get { return _machineRecords; } set { SetProperty(ref _machineRecords, value); } }


        public async void OpenOrderDialog()
        {
            if (SelectedRecord != null)
            {
                // 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("record", SelectedRecord);
                DialogServiceExtensions.ShowDialogHost(_dialogService, "ReturnDrugDialog", 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)
            {
                SelectedRecord = null;
                RequestData();
            }
            //MessageBox.Show("返回值：" + dialogResult.Result.ToString());
        }

        public bool KeepAlive => false;

        //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);
        }


        public void RequestData()
        {
            List<MachineRecord> queryData = SqlSugarHelper.Db.Queryable<MachineRecord>()
                .Includes<DrugInfo>(mr => mr.DrugInfo)
                .Includes<UserList>(mr => mr.User)
                .Where(mr => mr.Type == 2)
                .Where(mr => mr.Status < 2)
                .Where(mr => mr.MachineId.Equals(ConfigurationManager.AppSettings["machineId"] ?? "DM1"))
                //.WhereIF(QueryDate != null, mr => mr.OperationTime.ToString("yyyy-MM-dd") == QueryDate)
                .WhereIF(!String.IsNullOrEmpty(SearchValue) && SelectedItem.Code.Equals("DrugId"), (mr) => mr.DrugInfo.DrugId.ToString().Contains(SearchValue))
                .WhereIF(!String.IsNullOrEmpty(SearchValue) && SelectedItem.Code.Equals("DrugName"), (mr) => mr.DrugInfo.DrugName.Contains(SearchValue))
                .WhereIF(!String.IsNullOrEmpty(SearchValue) && SelectedItem.Code.Equals("PyCode"), (mr) => mr.DrugInfo.PyCode.Contains(SearchValue))
                .WhereIF(!String.IsNullOrEmpty(SearchValue) && SelectedItem.Code.Equals("DrugBarcode"), (mr) => mr.DrugInfo.DrugBarcode.Contains(SearchValue))
                .OrderBy(mr => mr.OperationTime)
                .ToList();
            MachineRecords = queryData;
        }

        //接收导航传过来的参数  现在是在此处初始化了表格数据
        public void OnNavigatedTo(NavigationContext navigationContext)
        {
            RequestData();
        }

        //每次导航的时候，该实列用不用重新创建，true是不重新创建,false是重新创建
        public bool IsNavigationTarget(NavigationContext navigationContext)
        {
            return true;
        }

        //这个方法用于拦截请求
        public void OnNavigatedFrom(NavigationContext navigationContext)
        {

        }
    }
}