BPASmartClient/BPASmartClient.JXJFoodBigStation/ViewModel/SelectRecipesViewModel.cs

using BPASmartClient.CustomResource.Pages.Model;
using BPASmartClient.Helper;
using BPASmartClient.JXJFoodBigStation.Model;
using Microsoft.Toolkit.Mvvm.ComponentModel;
using Microsoft.Toolkit.Mvvm.Input;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace BPASmartClient.JXJFoodBigStation.ViewModel
{
    internal class SelectRecipesViewModel:ObservableObject
    {
        public SelectRecipesViewModel()
        {
            AllRecipes = new();
            foreach (var item in Json<LocalRecipe>.Data.SelectedRecipes)
            {
                SelectRecipes.Add(item);
            }

            if (Json<LocalRecipe>.Data.Recipes != null)
            {
                foreach (var item in Json<LocalRecipe>.Data.Recipes)
                {
                    AllRecipes.Add(new RecipeDataWithCheck()
                    {
                        Recipe = item,
                        IsSelected = SelectRecipes.Any(p => p.RecipeCode == item.RecipeCode)
                    });
                }
            }


            ConfirmCommand = new(() =>
            {
                RefreshSelected();
                ActionManage.GetInstance.Send("CloseSelectRecipesView");
            });

            CancelCommand = new(() =>
            {
                    ActionManage.GetInstance.Send("CloseSelectRecipesView");
            });

            AllSelectCommand = new(() =>
            {
                foreach (var item in AllRecipes)
                {
                    item.IsSelected = true;
                }
            });

            AllCancelCommand = new(() =>
            {
                foreach (var item in AllRecipes)
                {
                    item.IsSelected = false;
                }
            });

        }

        private void RefreshSelected()
        {
            SelectRecipes.Clear();
            foreach (var item in AllRecipes)
            {
                if (item.IsSelected==true)
                {
                    SelectRecipes.Add(item.Recipe);
                }
            }
        }

        public ObservableCollection<RecipeDataWithCheck> AllRecipes {get; set; }

        public static ObservableCollection<RecipeData> SelectRecipes { get; set; } = new ObservableCollection<RecipeData>();

        /// <summary>
        /// 取消筛选，即关闭本窗口。
        /// </summary>
        public RelayCommand CancelCommand { get; set; }
        /// <summary>
        /// 全选。
        /// </summary>
        public RelayCommand AllSelectCommand { get; set; }
        /// <summary>
        /// 全部取消选择。
        /// </summary>
        public RelayCommand AllCancelCommand { get; set; }
        /// <summary>
        /// 确认选择。
        /// </summary>
        public RelayCommand ConfirmCommand { get; set; }

        /// <summary>
        /// 一个配方数据的包装类。
        /// </summary>
        internal class RecipeDataWithCheck:ObservableObject
        {
            public RecipeData Recipe { get; set; }
            private bool _IsSelected;

            public bool IsSelected
            {
                get { return _IsSelected; }
                set { _IsSelected = value; OnPropertyChanged(); }
            }

        }
    }
}