334 lines
12 KiB
C#
334 lines
12 KiB
C#
using UIShare.PubEvent;
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using UIShare.UIViewModel;
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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using System.Collections.Specialized;
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using System.ComponentModel;
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using System.Linq;
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using System.Reflection;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows;
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using System.Windows.Input;
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using System.Xml;
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using UIShare.GlobalVariable;
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using UIShare.ViewModelBase;
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using Prism.Events;
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namespace TestingModule.ViewModels
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{
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public class StepsManagerViewModel:NavigateViewModelBase, IDisposable
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{
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#region 属性
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private string _Title;
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public string Title
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{
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get => _Title;
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set => SetProperty(ref _Title, value);
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}
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private bool _Admin;
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public bool Admin
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{
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get => _Admin;
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set => SetProperty(ref _Admin, value);
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}
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private int _SelectedTabIndex;
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public int SelectedTabIndex
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{
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get => _SelectedTabIndex;
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set => SetProperty(ref _SelectedTabIndex, value);
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}
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private string _selectedTabHeader;
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public string SelectedTabHeader
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{
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get { return _selectedTabHeader; }
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set { SetProperty(ref _selectedTabHeader, value); }
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}
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private List<StepVM> _SelectedItems;
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public List<StepVM> SelectedItems
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{
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get { return _SelectedItems; }
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set { SetProperty(ref _SelectedItems, value); }
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}
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private StepVM _SelectedStep;
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public StepVM SelectedStep
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{
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get => _SelectedStep;
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set
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{
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if (SetProperty(ref _SelectedStep, value))
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{
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_ScopedContext.SelectedStep = value;
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}
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}
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}
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public ProgramVM Program
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{
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get => _ScopedContext.Program;
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set
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{
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if (_ScopedContext.Program != value)
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{
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_ScopedContext.Program = value;
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RaisePropertyChanged();
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}
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}
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}
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ScopedContext _ScopedContext { get; set; }
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private readonly SystemConfig _systemConfig;
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private readonly GlobalInfo _globalInfo;
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private List<StepVM> tmpCopyList = new List<StepVM>();
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// 追踪当前订阅的集合实例，用于在集合被整体替换时重新订阅
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private ObservableCollection<StepVM> _trackedStepCollection;
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private ObservableCollection<StepVM> _trackedErrorStepCollection;
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#endregion
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#region 命令
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public ICommand EditStepCommand { get;set; }
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public ICommand CopyStepCommand { get;set; }
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public ICommand PasteStepCommand { get;set; }
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public ICommand DeleteStepCommand { get;set; }
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public ICommand TabSelectionChangedCommand { get;set; }
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public ICommand SelectionChangedCommand { get;set; }
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#endregion
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public StepsManagerViewModel(IContainerProvider containerProvider, ScopedContext scopedContext, SystemConfig systemConfig, GlobalInfo globalInfo) : base(containerProvider)
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{
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_ScopedContext = scopedContext;
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_systemConfig = systemConfig;
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_globalInfo = globalInfo;
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Title = _systemConfig.Title;
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EditStepCommand = new DelegateCommand(EditStep);
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CopyStepCommand = new DelegateCommand(CopyStep);
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PasteStepCommand = new DelegateCommand(PasteStep);
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DeleteStepCommand = new DelegateCommand(DeleteStep);
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TabSelectionChangedCommand = new DelegateCommand<string>(TabSelectionChanged);
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SelectionChangedCommand = new DelegateCommand<object>(SelectionChanged);
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SubscribeStepCollections();
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Program.PropertyChanged += Program_PropertyChanged;
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Admin = _globalInfo.IsAdmin;
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}
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private void SelectionChanged(object parameter)
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{
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var selectedList = parameter as IList;
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if (selectedList != null)
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{
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SelectedItems = selectedList.Cast<StepVM>().ToList();
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}
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}
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private void TabSelectionChanged(string SelectedTabHeader)
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{
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_ScopedContext.SelectedStepList = SelectedTabHeader;
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}
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#region 委托命令
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private void EditStep()
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{
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if (_globalInfo.IsAdmin && SelectedStep != null&& _ScopedContext.SelectedStep!=null)
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{
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_eventAggregator.GetEvent<EditSetpEvent>().Publish() ;
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}
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}
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private void CopyStep()
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{
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if (_globalInfo.IsAdmin && SelectedItems.Any())
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{
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tmpCopyList.Clear();
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foreach (var item in SelectedItems)
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{
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tmpCopyList.Add(item);
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}
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}
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}
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private void PasteStep()
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{
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// 权限校验并确保有可粘贴的内容
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if (_globalInfo.IsAdmin && tmpCopyList.Any())
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{
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int insertIndex;
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if (_ScopedContext.SelectedStepList == "主程序")
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{
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insertIndex = SelectedStep != null ? Program.StepCollection.IndexOf(SelectedStep) + 1 : Program.StepCollection.Count;
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foreach (var item in tmpCopyList)
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{
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// 创建新副本，避免引用同一个对象，并赋予新 ID
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var newStep = new StepVM(item) { ID = Guid.NewGuid() };
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Program.StepCollection.Insert(insertIndex, newStep);
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insertIndex++; // 递增索引，保证粘贴的多项顺序一致
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}
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}
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else if (_ScopedContext.SelectedStepList == "错误程序")
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{
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insertIndex = SelectedStep != null ? Program.ErrorStepCollection.IndexOf(SelectedStep) + 1 : Program.ErrorStepCollection.Count;
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foreach (var item in tmpCopyList)
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{
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var newStep = new StepVM(item) { ID = Guid.NewGuid() };
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Program.ErrorStepCollection.Insert(insertIndex, newStep);
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insertIndex++;
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}
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}
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}
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}
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private void DeleteStep()
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{
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// 确保有选中的项
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if (_globalInfo.IsAdmin && SelectedItems != null && SelectedItems.Any())
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{
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// 创建一个副本进行循环，防止在 Remove 过程中集合变化导致的问题
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var toDelete = SelectedItems.ToList();
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foreach (var item in toDelete)
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{
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_eventAggregator.GetEvent<DeletedStepEvent>().Publish(item.ID);
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if (_ScopedContext.SelectedStepList == "主程序")
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{
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Program.StepCollection.Remove(item);
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}
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else if (_ScopedContext.SelectedStepList == "错误程序")
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{
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Program.ErrorStepCollection.Remove(item);
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}
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}
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// 3. 清空 ViewModel 的选中状态，避免悬挂引用
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SelectedStep = null;
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SelectedItems.Clear();
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_ScopedContext.SelectedStep = null;
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}
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}
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#endregion
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#region 辅助方法
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/// <summary>
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/// 订阅当前 Program 的 StepCollection 和 ErrorStepCollection 的 CollectionChanged 事件。
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/// </summary>
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private void SubscribeStepCollections()
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{
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_trackedStepCollection = Program.StepCollection;
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_trackedErrorStepCollection = Program.ErrorStepCollection;
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if (_trackedStepCollection != null)
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_trackedStepCollection.CollectionChanged += StepCollection_CollectionChanged;
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if (_trackedErrorStepCollection != null)
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_trackedErrorStepCollection.CollectionChanged += StepCollection_CollectionChanged;
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}
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/// <summary>
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/// 取消订阅当前追踪的集合事件。
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/// </summary>
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private void UnsubscribeStepCollections()
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{
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if (_trackedStepCollection != null)
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{
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_trackedStepCollection.CollectionChanged -= StepCollection_CollectionChanged;
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_trackedStepCollection = null;
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}
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if (_trackedErrorStepCollection != null)
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{
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_trackedErrorStepCollection.CollectionChanged -= StepCollection_CollectionChanged;
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_trackedErrorStepCollection = null;
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}
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}
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/// <summary>
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/// 当 Program 的 StepCollection / ErrorStepCollection 被整体替换时，自动重新订阅并刷新序号。
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/// </summary>
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private void Program_PropertyChanged(object? sender, PropertyChangedEventArgs e)
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{
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if (e.PropertyName == nameof(ProgramVM.StepCollection) ||
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e.PropertyName == nameof(ProgramVM.ErrorStepCollection))
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{
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UnsubscribeStepCollections();
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SubscribeStepCollections();
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// 集合被整体替换后，对新集合重新编号
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Application.Current?.Dispatcher.BeginInvoke(new Action(() =>
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{
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for (int i = 0; i < Program.StepCollection.Count; i++)
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Program.StepCollection[i].Index = i + 1;
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for (int i = 0; i < Program.ErrorStepCollection.Count; i++)
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Program.ErrorStepCollection[i].Index = i + 1;
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}), System.Windows.Threading.DispatcherPriority.Background);
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}
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}
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private void StepCollection_CollectionChanged(object? sender, NotifyCollectionChangedEventArgs e)
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{
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var collection = sender as ObservableCollection<StepVM>;
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// Add/Move/Remove 都会触发，这里判断具体情形
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if (e.Action == NotifyCollectionChangedAction.Add ||
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e.Action == NotifyCollectionChangedAction.Move||
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e.Action == NotifyCollectionChangedAction.Remove)
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{
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// 如果需要等 UI 更新完再处理，可也用 Dispatcher 延迟一小段时间
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Application.Current?.Dispatcher.BeginInvoke(new Action(() =>
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{
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if(_ScopedContext.SelectedStepList=="主程序")
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{
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for (int i = 0; i < Program.StepCollection.Count; i++)
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Program.StepCollection[i].Index = i + 1;
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}
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else if (_ScopedContext.SelectedStepList == "错误程序")
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for (int i = 0; i < Program.ErrorStepCollection.Count; i++)
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Program.ErrorStepCollection[i].Index = i + 1;
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}), System.Windows.Threading.DispatcherPriority.Background);
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}
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}
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#endregion
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public void Dispose()
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{
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try
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{
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// 1. 取消订阅 CollectionChanged 事件（从追踪的实例上取消，而非可能已被替换的当前实例）
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UnsubscribeStepCollections();
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// 2. 取消订阅 Program.PropertyChanged
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if (Program != null)
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{
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Program.PropertyChanged -= Program_PropertyChanged;
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}
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// 3. 【核心修复】必须显式退订 Prism 全局事件（AlarmEvent）
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// 注意：因为订阅时使用的是匿名 Lambda，最安全稳妥的退订方式是把整个事件上的当前 VM 订阅者全部注销
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_eventAggregator?.GetEvent<AlarmEvent>()?.Unsubscribe(null);
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// 4. 清空临时缓存集合与 UI 绑定列表，避免悬挂指针
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tmpCopyList?.Clear();
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tmpCopyList = null!;
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SelectedItems?.Clear();
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SelectedItems = null!;
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// 5. 清除选中项状态引用
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SelectedStep = null;
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if (_ScopedContext != null)
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{
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_ScopedContext.SelectedStep = null;
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_ScopedContext = null!; // 断开上下文引用
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}
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}
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catch (Exception ex)
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{
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Logger.LoggerHelper.Error($"释放步骤管理组件（StepsManagerViewModel）资源失败: {ex.Message}");
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}
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}
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}
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}
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