20230201_145_upperpc/InSituLaboratory/ViewModels/Pages/Dialogs/SelectUserViewModel.cs

using InSituLaboratory.Entities;
using InSituLaboratory.IService;
using InSituLaboratory.Models;
using Prism.Services.Dialogs;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;

namespace InSituLaboratory.ViewModels.Pages.Dialogs
{
    public class SelectUserViewModel : DialogViewModelBase
    {
        private List<UserModel> _users;

        public ObservableCollection<UserModel> Users { get; set; } =
               new ObservableCollection<UserModel>();


        private string _fileterText;

        /// <summary>
        /// 关键字搜索用户
        /// </summary>
        public string FilterText
        {
            get { return _fileterText; }
            set
            {
                _fileterText = value;

                Users.Clear();
                var us = _users.Where(u =>
                     string.IsNullOrEmpty(value) ||
                     u.RealName.Contains(value) ||
                     u.UserName.Contains(value)
                 ).ToList();
                us.ForEach(u => Users.Add(u));
            }
        }


        IUserService _userService;
        IRoleService _roleService;
        public SelectUserViewModel(IUserService userService, IRoleService roleService)
        {
            _userService = userService;
            _roleService = roleService;
        }


        /// <summary>
        /// 选择用户弹窗
        /// </summary>
        private int _rid = 0;
        public override void OnDialogOpened(IDialogParameters parameters)
        {
            this.Title = "选择用户";

            _rid = parameters.GetValue<int>("rid");
            var uids = parameters.GetValue<List<int>>("uids");
            var us = _userService.GetUsers("").ToList();
            _users = us.Select(u => new UserModel
            {
                IsSelected = uids.Contains(u.UserId),
                UserId = u.UserId,
                UserName = u.UserName,
                RealName = u.RealName,
                UserIcon = "pack://siteoforigin:,,,/Avatars/" + u.UserIcon
            }).ToList();

            _users.ForEach(u => Users.Add(u));

        }

        /// <summary>
        /// 保存
        /// </summary>
        public override void DoSave()
        {
            try
            {
                //现将当前角色中的所有用户都清掉，然后加入当前已选中的用户
                var role = _roleService.Find<SysRole>(_rid);
                if (role == null) return;

                role.Users.Clear();
                foreach (var user in _users)
                {
                    if (!user.IsSelected) continue;

                    role.Users.Add(new RoleUser
                    {
                        RoleId = _rid,
                        UserId = user.UserId,
                        SysRole = role
                    });
                }
                _roleService.Update(role);

                base.DoSave();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "提示");
            }
        }
    }
}