TFT_PlcItemAutoTest/BlankApp1/BlankApp1/ViewModels/TreeMenuViewModel.cs

using BizService;
using BlankApp1.Models;
using Model.Entities;
using PLCTool.Common;
using Prism.Commands;
using Prism.Mvvm;
using Prism.Regions;
using SqlSugar;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using static System.Windows.Forms.VisualStyles.VisualStyleElement;

namespace BlankApp1.ViewModels
{
    public class TreeMenuViewModel:BindableBase
    {
        private readonly IMenuService _menuService;
        private readonly IRoleMenuService _iRoleMenuService;
        public List<MenuItemModel> Menus { get; set; } = new List<MenuItemModel>();
    
        // 列表，没有树型结构
        private List<Model.Entities.Menu> origMenus = new List<Model.Entities.Menu>();
        private string basePath = System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Images");

        IRegionManager _regionManager;
        public TreeMenuViewModel(IRegionManager regionManager, IMenuService menuService,IRoleMenuService iRoleMenuService)
        {
            _regionManager = regionManager;
            _iRoleMenuService = iRoleMenuService;
            _menuService = menuService;
            OnLoadCommand = new DelegateCommand(OnLoad);
            GetMenu();
        }

        private void OnLoad()
        {
            

        }

        private void GetMenu()
        {
            // 需要获取菜单数据
            try
            {
                //查找这个角色的菜单

                var roleMenus = _iRoleMenuService.FindAllByRoleId(Appsession.RoleId);
                foreach (var menu in roleMenus)
                {
                    var findMenu = _menuService.Find((int)menu.MenuId);
                    if (findMenu != null)
                    {
                        origMenus.Add(findMenu);
                    }

                }
                this.FillMenus(Menus, 0);
            }
            catch (Exception ex)
            {
                MessageBoxResult boxResult = MessageBox.Show("初始化失败，请检查与数据库的链接！", "提示", MessageBoxButton.OK, MessageBoxImage.Warning);
                return;
            }
        }

        public  string EscapeUnicode( string str)  // 将字符串编码为unicode转义序列(\uxxxx)
        {
            StringBuilder tmp = new StringBuilder();
            for (int i = 0; i < str.Length; i++)
            {
                ushort uxc = (ushort)str[i];
                tmp.Append(@"\u" + uxc.ToString("x4"));
            }
            return (tmp.ToString());
        }

        public static string String2Unicode(string source)
        {
            var bytes = Encoding.Unicode.GetBytes(source);
            var stringBuilder = new StringBuilder();
            for (var i = 0; i < bytes.Length; i += 2)
            {
                stringBuilder.AppendFormat("\\u{0:x2}{1:x2}", bytes[i + 1], bytes[i]);
            }
            return stringBuilder.ToString();
        }

        ///递归
        ///
        private void FillMenus(List<MenuItemModel> menus, int parentId)
        {
            var sub = origMenus.Where(m => m.ParentId == parentId).OrderBy(o => o.Index);
            //查找roleID对应的菜单

            if (sub.Count() > 0)
            {
                foreach (var item in sub)
                {


                    string icon = string.Empty;

                    if (!string.IsNullOrEmpty(item.MenuIcon))
                    {
                        icon = System.IO.Path.Combine(basePath, item.MenuIcon);

                    }

                    MenuItemModel mm = new MenuItemModel(_regionManager)
                    {
                        MenuHeader = item.MenuHeader,
                        MenuIcon = icon,
                        TargetView = item.TargetView
                    };
                    menus.Add(mm);

                    FillMenus(mm.Children = new List<MenuItemModel>(), item.MenuId);
                }
            }
        }
        public DelegateCommand OnLoadCommand { set; get; }
    }
}