David P.G
d4562e600e
2
3 -
在AppSettings中添加VariableImportTemplate配置项，用于设置变量导入的默认参数（IsActive、PollingIn
terval、IsHistoryEnabled、HistoryDeadband）
4 - 修改AppSettings.Load()方法，优化配置加载逻辑
5 -
实现IVariableItemViewModelFactory和VariableItemViewModelFactory，使用工厂模式创建VariableItemVie
wModel实例
6 - 在ImportOpcUaDialogViewModel中使用工厂创建VariableItemViewModel实例，以应用默认配置
7 -
在SettingViewModel和SettingView中添加变量导入设置界面和相关属性（VariablePollingInterval、Variab
leIsActive、VariableIsHistoryEnabled、VariableHistoryDeadband）
8 - 移除VariableItemViewModel构造函数中的轮询间隔默认值设置，改由工厂模式设置
9 - 优化SplashViewModel中配置加载逻辑
10 - 移除MainView.xaml.cs中已注释的代码
11 - 调整VariableTableView.xaml的UI布局和菜单结构
12 - 注册IVariableItemViewModelFactory服务
这些修改主要实现了几个关键功能：
1. 引入了工厂模式来创建VariableItemViewModel实例，确保所有新创建的变量项都应用默认配置
2. 添加了变量导入模板设置，用户可以在设置界面自定义导入变量的默认属性
3. 对相关UI进行了调整和优化
408 lines
14 KiB
C#
408 lines
14 KiB
C#
using System.Collections;
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using System.Collections.ObjectModel;
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using AutoMapper;
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using CommunityToolkit.Mvvm.ComponentModel;
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using CommunityToolkit.Mvvm.Input;
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using DMS.Core.Enums;
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using DMS.Infrastructure.Interfaces.Services;
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using DMS.Infrastructure.Models;
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using DMS.WPF.Factories;
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using DMS.WPF.Interfaces;
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using DMS.WPF.Services;
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using DMS.WPF.ViewModels.Items;
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using Opc.Ua;
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using Opc.Ua.Client;
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namespace DMS.WPF.ViewModels.Dialogs;
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/// <summary>
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/// OPC UA导入对话框的视图模型
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/// 负责处理OPC UA服务器连接、节点浏览和变量导入等功能
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/// </summary>
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public partial class ImportOpcUaDialogViewModel : DialogViewModelBase<List<VariableItemViewModel>>, IDisposable
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{
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/// <summary>
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/// OPC UA服务器端点URL
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/// </summary>
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[ObservableProperty]
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private string _endpointUrl = "opc.tcp://127.0.0.1:4855"; // 默认值
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/// <summary>
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/// OPC UA根节点
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/// </summary>
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[ObservableProperty]
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private OpcUaNodeItemViewModel _rootOpcUaNode;
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/// <summary>
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/// 当前选中节点下的所有变量集合
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/// </summary>
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[ObservableProperty]
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private ObservableCollection<VariableItemViewModel> _opcUaNodeVariables = new();
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/// <summary>
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/// 用户选择的变量列表
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/// </summary>
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[ObservableProperty]
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private IList _selectedVariables = new ArrayList();
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/// <summary>
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/// 是否全选变量
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/// </summary>
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[ObservableProperty]
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private bool _selectAllVariables;
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/// <summary>
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/// 是否已连接到OPC UA服务器
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/// </summary>
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[ObservableProperty]
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private bool _isConnected;
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/// <summary>
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/// 连接按钮显示文本
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/// </summary>
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[ObservableProperty]
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private string _connectButtonText = "连接服务器";
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/// <summary>
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/// 连接按钮是否可用
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/// </summary>
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[ObservableProperty]
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private bool _isConnectButtonEnabled = true;
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/// <summary>
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/// 当前选中的OPC UA节点
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/// </summary>
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[ObservableProperty]
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[NotifyCanExecuteChangedFor(nameof(FindCurrentNodeVariablesCommand))] // 当选中节点改变时通知查找变量命令更新可执行状态
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private OpcUaNodeItemViewModel _selectedNode;
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/// <summary>
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/// OPC UA服务接口实例
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/// </summary>
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private readonly IOpcUaService _opcUaService;
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private readonly IVariableItemViewModelFactory _variableItemViewModelFactory;
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/// <summary>
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/// 对象映射器实例
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/// </summary>
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private readonly IMapper _mapper;
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/// <summary>
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/// 取消令牌源，用于取消长时间运行的操作
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/// </summary>
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private readonly CancellationTokenSource _cancellationTokenSource;
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/// <summary>
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/// 通知服务实例
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/// </summary>
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private readonly INotificationService _notificationService;
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/// <summary>
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/// 构造函数
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/// 初始化ImportOpcUaDialogViewModel实例
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/// </summary>
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/// <param name="opcUaService">OPC UA服务接口实例</param>
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/// <param name="mapper">对象映射器实例</param>
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/// <param name="notificationService">通知服务实例</param>
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public ImportOpcUaDialogViewModel(IOpcUaService opcUaService, IVariableItemViewModelFactory variableItemViewModelFactory,
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IMapper mapper, INotificationService notificationService)
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{
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_opcUaService = opcUaService;
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_variableItemViewModelFactory = variableItemViewModelFactory;
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_mapper = mapper;
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_notificationService = notificationService;
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// 初始化根节点
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RootOpcUaNode = new OpcUaNodeItemViewModel() { DisplayName = "根节点", NodeId = Objects.ObjectsFolder, IsExpanded = true };
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// 初始化取消令牌源
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_cancellationTokenSource = new CancellationTokenSource();
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}
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/// <summary>
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/// 查找当前节点变量命令的可执行条件
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/// 只有在已连接且有选中节点时才可执行
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/// </summary>
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public bool CanFindCurrentNodeVariables => IsConnected && SelectedNode != null;
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/// <summary>
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/// 连接到OPC UA服务器命令
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/// 负责建立与OPC UA服务器的连接并加载根节点信息
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/// </summary>
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[RelayCommand]
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private async Task Connect()
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{
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try
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{
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// 更新UI状态：禁用连接按钮并显示连接中状态
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IsConnectButtonEnabled = false;
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ConnectButtonText = "连接中...";
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// 异步连接到OPC UA服务器
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await _opcUaService.ConnectAsync(EndpointUrl);
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// 检查连接是否成功建立
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if (_opcUaService.IsConnected)
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{
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// 更新连接状态
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IsConnected = true;
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ConnectButtonText = "已连接";
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// 浏览根节点并加载其子节点
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var children = await _opcUaService.BrowseNode(_mapper.Map<OpcUaNode>(RootOpcUaNode));
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RootOpcUaNode.Children = _mapper.Map<ObservableCollection<OpcUaNodeItemViewModel>>(children);
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}
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}
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// 处理特定异常类型提供更友好的用户提示
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catch (UnauthorizedAccessException ex)
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{
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_notificationService.ShowError($"连接被拒绝，请检查用户名和密码: {ex.Message}");
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}
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catch (TimeoutException ex)
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{
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_notificationService.ShowError($"连接超时，请检查服务器地址和网络连接: {ex.Message}");
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}
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catch (Exception ex)
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{
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_notificationService.ShowError($"连接 OPC UA 服务器失败: {EndpointUrl} - {ex.Message}", ex);
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}
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finally
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{
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// 确保按钮状态正确更新
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// 如果连接失败，恢复按钮为可用状态
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if (!IsConnected)
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{
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IsConnectButtonEnabled = true;
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ConnectButtonText = "连接服务器";
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}
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}
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}
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/// <summary>
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/// 次要按钮命令（取消导入）
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/// 负责断开与OPC UA服务器的连接并关闭对话框，返回用户选择的变量
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/// </summary>
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[RelayCommand]
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private async Task SecondaryButton()
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{
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try
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{
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// 断开与OPC UA服务器的连接
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await _opcUaService.DisconnectAsync();
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// 关闭对话框并返回用户选择的变量列表
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Close(SelectedVariables.Cast<VariableItemViewModel>().ToList());
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}
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catch (Exception ex)
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{
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_notificationService.ShowError($"断开连接时发生错误: {ex.Message}", ex);
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}
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}
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/// <summary>
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/// 主要按钮命令（确认导入）
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/// 负责断开与OPC UA服务器的连接并关闭对话框，返回所有加载的变量
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/// </summary>
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[RelayCommand]
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private async Task PrimaryButton()
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{
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try
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{
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// 断开与OPC UA服务器的连接
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await _opcUaService.DisconnectAsync();
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// 关闭对话框并返回所有加载的变量
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Close(OpcUaNodeVariables.ToList());
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}
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catch (Exception ex)
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{
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_notificationService.ShowError($"断开连接时发生错误: {ex.Message}", ex);
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}
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}
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/// <summary>
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/// 关闭按钮命令
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/// 负责断开与OPC UA服务器的连接
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/// </summary>
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[RelayCommand]
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private async Task CloseButton()
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{
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try
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{
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// 断开与OPC UA服务器的连接
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await _opcUaService.DisconnectAsync();
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}
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catch (Exception ex)
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{
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_notificationService.ShowError($"断开连接时发生错误: {ex.Message}", ex);
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}
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}
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/// <summary>
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/// 查找当前节点变量命令
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/// 根据当前选中的节点查找其下的所有变量
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/// </summary>
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[RelayCommand(CanExecute = nameof(CanFindCurrentNodeVariables))]
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private async Task FindCurrentNodeVariables()
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{
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try
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{
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// 检查是否有选中的节点
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if (SelectedNode == null)
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{
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_notificationService.ShowError("请先选择左边的节点，然后再查找变量。");
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return;
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}
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// 清空当前变量列表
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OpcUaNodeVariables.Clear();
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// 设置选中节点的状态
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SelectedNode.IsExpanded = true;
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SelectedNode.IsSelected = true;
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// 异步浏览节点变量（递归模式）
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await BrowseNodeVariablesAsync(SelectedNode, true);
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}
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catch (OperationCanceledException)
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{
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// 处理用户取消操作的情况
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_notificationService.ShowInfo("操作已被取消");
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}
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catch (Exception ex)
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{
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// 处理其他异常情况
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_notificationService.ShowError($"加载 OPC UA 节点变量失败: {SelectedNode?.NodeId} - {ex.Message}", ex);
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}
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}
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/// <summary>
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/// 加载节点变量方法
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/// 根据指定节点加载其下的所有变量
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/// </summary>
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/// <param name="node">要加载变量的OPC UA节点</param>
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public async Task LoadNodeVariables(OpcUaNodeItemViewModel node)
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{
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try
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{
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// 清空当前变量列表
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OpcUaNodeVariables.Clear();
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// 设置节点状态
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node.IsExpanded = true;
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node.IsSelected = true;
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// 更新选中节点
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SelectedNode = node;
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// 异步浏览节点变量（非递归模式）
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await BrowseNodeVariablesAsync(node);
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}
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catch (OperationCanceledException)
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{
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// 处理用户取消操作的情况
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_notificationService.ShowInfo("操作已被取消");
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}
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catch (Exception ex)
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{
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// 处理其他异常情况
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_notificationService.ShowError($"加载 OPC UA 节点变量失败: {node?.NodeId} - {ex.Message}", ex);
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}
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}
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/// <summary>
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/// 浏览节点变量异步方法
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/// 递归或非递归地浏览指定节点下的所有变量
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/// </summary>
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/// <param name="node">要浏览的节点</param>
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/// <param name="isRecursive">是否递归浏览子节点</param>
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private async Task BrowseNodeVariablesAsync(OpcUaNodeItemViewModel node, bool isRecursive = false)
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{
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// 参数有效性检查
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if (node == null) return;
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try
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{
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// 检查是否有取消请求
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_cancellationTokenSource.Token.ThrowIfCancellationRequested();
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// 异步浏览节点获取子节点列表
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var children = await _opcUaService.BrowseNode(_mapper.Map<OpcUaNode>(node));
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// 再次检查是否有取消请求
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_cancellationTokenSource.Token.ThrowIfCancellationRequested();
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// 遍历所有子节点
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foreach (var child in children)
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{
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// 映射子节点为视图模型对象
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var nodeItem = _mapper.Map<OpcUaNodeItemViewModel>(child);
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// 判断节点类型是否为变量
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if (child.NodeClass == NodeClass.Variable)
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{
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var variableItem = _variableItemViewModelFactory.CreateNewVariableItemViewModel();
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variableItem.Name = child.DisplayName;
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variableItem.OpcUaNodeId = child.NodeId.ToString();
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variableItem.Protocol = ProtocolType.OpcUa;
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variableItem.DataType = child.DataType;
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// 创建并添加变量项到变量列表
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OpcUaNodeVariables.Add(variableItem);
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}
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// 如果是递归模式且节点不是变量，则递归浏览子节点
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else if (isRecursive)
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{
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// 递归浏览子节点
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await BrowseNodeVariablesAsync(nodeItem, true);
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}
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// 非递归模式下，将非变量节点添加到节点树中
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else
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{
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// 避免重复添加相同节点
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if (!node.Children.Any(n => n.NodeId == nodeItem.NodeId))
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{
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node.Children.Add(nodeItem);
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}
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}
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}
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}
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catch (OperationCanceledException)
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{
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// 处理取消操作
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_notificationService.ShowInfo("节点浏览操作已被取消");
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throw; // 重新抛出异常以保持调用链
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}
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catch (Exception ex)
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{
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// 记录浏览节点失败的日志
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_notificationService.ShowError($"浏览节点失败: {node.NodeId} - {ex.Message}", ex);
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throw; // 重新抛出异常以保持调用链
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}
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}
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/// <summary>
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/// 处理来自服务器的数据变化通知
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/// 当监视的OPC UA节点数据发生变化时会被调用
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/// </summary>
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/// <param name="item">发生变化的监视项</param>
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/// <param name="e">监视项通知事件参数</param>
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private static void OnNotification(MonitoredItem item, MonitoredItemNotificationEventArgs e)
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{
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// 遍历所有变化的值
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foreach (var value in item.DequeueValues())
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{
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// 输出通知信息到控制台
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Console.WriteLine(
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$@"[通知] {item.DisplayName}: {value.Value} | 时间戳: {value.SourceTimestamp.ToLocalTime()} | 状态: {value.StatusCode}");
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}
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}
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/// <summary>
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/// 释放资源方法
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/// 实现IDisposable接口，负责释放使用的资源
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/// </summary>
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public void Dispose()
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{
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// 发出取消请求
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_cancellationTokenSource?.Cancel();
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// 释放取消令牌源资源
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_cancellationTokenSource?.Dispose();
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}
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} |