初步添加事件服务

DMS.WPF/App.xaml.cs

@@ -68,6 +68,9 @@ public partial class App : System.Windows.Application
         {
             Host.Services.GetRequiredService<GrowlNotificationService>();
             
+            // 初始化设备监控服务
+            Host.Services.GetRequiredService<DeviceMonitoringService>();
+            
             // 初始化数据处理链
             var dataProcessingService = Host.Services.GetRequiredService<IDataProcessingService>();
             dataProcessingService.AddProcessor(Host.Services.GetRequiredService<CheckValueChangedProcessor>());
@@ -241,6 +244,12 @@ public partial class App : System.Windows.Application
         // 注册WPF中的服务
         services.AddSingleton<IMqttAppService, MqttAppService>();
         
+        // 注册事件服务
+        services.AddSingleton<IEventService, EventService>();
+        
+        // 注册设备监控服务
+        services.AddSingleton<DeviceMonitoringService>();
+        
         // 注册新的数据服务
         services.AddSingleton<IDeviceDataService, DeviceDataService>();
         services.AddSingleton<IVariableDataService, VariableDataService>();
@@ -252,7 +261,18 @@ public partial class App : System.Windows.Application
         services.AddSingleton<IDataStorageService, DataStorageService>();
         
         // 注册主数据服务
-        services.AddSingleton<IWPFDataService, WPFDataService>();
+        services.AddSingleton<IWPFDataService>(provider =>
+            new WPFDataService(
+                provider.GetRequiredService<IMapper>(),
+                provider.GetRequiredService<IAppDataCenterService>(),
+                provider.GetRequiredService<IDeviceDataService>(),
+                provider.GetRequiredService<IVariableDataService>(),
+                provider.GetRequiredService<IMenuDataService>(),
+                provider.GetRequiredService<IMqttDataService>(),
+                provider.GetRequiredService<ILogDataService>(),
+                provider.GetRequiredService<IVariableTableDataService>(),
+                provider.GetRequiredService<IEventService>()
+            ));
         
         // 保留原DataServices以保证现有代码兼容性（可选，建议逐步移除）
         // services.AddSingleton<DataServices>(provider => 

DMS.WPF/Events/DeviceActiveChangedEventArgs.cs

@@ -0,0 +1,50 @@
+using System;
+
+namespace DMS.WPF.Events;
+
+/// <summary>
+/// 设备状态改变事件参数
+/// </summary>
+public class DeviceActiveChangedEventArgs : EventArgs
+{
+    /// <summary>
+    /// 设备ID
+    /// </summary>
+    public int DeviceId { get; }
+
+    /// <summary>
+    /// 设备名称
+    /// </summary>
+    public string DeviceName { get; }
+
+    /// <summary>
+    /// 旧状态
+    /// </summary>
+    public bool OldStatus { get; }
+
+    /// <summary>
+    /// 新状态
+    /// </summary>
+    public bool NewStatus { get; }
+
+    /// <summary>
+    /// 状态改变时间
+    /// </summary>
+    public DateTime ChangeTime { get; }
+
+    /// <summary>
+    /// 初始化DeviceStatusChangedEventArgs类的新实例
+    /// </summary>
+    /// <param name="deviceId">设备ID</param>
+    /// <param name="deviceName">设备名称</param>
+    /// <param name="oldStatus">旧状态</param>
+    /// <param name="newStatus">新状态</param>
+    public DeviceActiveChangedEventArgs(int deviceId, string deviceName, bool oldStatus, bool newStatus)
+    {
+        DeviceId = deviceId;
+        DeviceName = deviceName;
+        OldStatus = oldStatus;
+        NewStatus = newStatus;
+        ChangeTime = DateTime.Now;
+    }
+}

DMS.WPF/Events/MqttConnectionChangedEventArgs.cs

@@ -0,0 +1,50 @@
+using System;
+
+namespace DMS.WPF.Events;
+
+/// <summary>
+/// MQTT连接状态改变事件参数
+/// </summary>
+public class MqttConnectionChangedEventArgs : EventArgs
+{
+    /// <summary>
+    /// MQTT服务器ID
+    /// </summary>
+    public int MqttServerId { get; }
+
+    /// <summary>
+    /// MQTT服务器名称
+    /// </summary>
+    public string MqttServerName { get; }
+
+    /// <summary>
+    /// 旧连接状态
+    /// </summary>
+    public bool OldConnectionStatus { get; }
+
+    /// <summary>
+    /// 新连接状态
+    /// </summary>
+    public bool NewConnectionStatus { get; }
+
+    /// <summary>
+    /// 状态改变时间
+    /// </summary>
+    public DateTime ChangeTime { get; }
+
+    /// <summary>
+    /// 初始化MqttConnectionChangedEventArgs类的新实例
+    /// </summary>
+    /// <param name="mqttServerId">MQTT服务器ID</param>
+    /// <param name="mqttServerName">MQTT服务器名称</param>
+    /// <param name="oldStatus">旧连接状态</param>
+    /// <param name="newStatus">新连接状态</param>
+    public MqttConnectionChangedEventArgs(int mqttServerId, string mqttServerName, bool oldStatus, bool newStatus)
+    {
+        MqttServerId = mqttServerId;
+        MqttServerName = mqttServerName;
+        OldConnectionStatus = oldStatus;
+        NewConnectionStatus = newStatus;
+        ChangeTime = DateTime.Now;
+    }
+}

DMS.WPF/Events/VariableValueChangedEventArgs.cs

@@ -0,0 +1,50 @@
+using System;
+
+namespace DMS.WPF.Events;
+
+/// <summary>
+/// 变量值改变事件参数
+/// </summary>
+public class VariableValueChangedEventArgs : EventArgs
+{
+    /// <summary>
+    /// 变量ID
+    /// </summary>
+    public int VariableId { get; }
+
+    /// <summary>
+    /// 变量名称
+    /// </summary>
+    public string VariableName { get; }
+
+    /// <summary>
+    /// 旧值
+    /// </summary>
+    public string OldValue { get; }
+
+    /// <summary>
+    /// 新值
+    /// </summary>
+    public string NewValue { get; }
+
+    /// <summary>
+    /// 值改变时间
+    /// </summary>
+    public DateTime ChangeTime { get; }
+
+    /// <summary>
+    /// 初始化VariableValueChangedEventArgs类的新实例
+    /// </summary>
+    /// <param name="variableId">变量ID</param>
+    /// <param name="variableName">变量名称</param>
+    /// <param name="oldValue">旧值</param>
+    /// <param name="newValue">新值</param>
+    public VariableValueChangedEventArgs(int variableId, string variableName, string oldValue, string newValue)
+    {
+        VariableId = variableId;
+        VariableName = variableName;
+        OldValue = oldValue;
+        NewValue = newValue;
+        ChangeTime = DateTime.Now;
+    }
+}

DMS.WPF/Interfaces/IEventService.cs

@@ -0,0 +1,58 @@
+using System;
+using DMS.WPF.Events;
+
+namespace DMS.WPF.Interfaces;
+
+/// <summary>
+/// 事件服务接口，用于统一管理应用程序中的各种事件
+/// </summary>
+public interface IEventService
+{
+    #region 设备事件
+
+    /// <summary>
+    /// 设备状态改变事件
+    /// </summary>
+    event EventHandler<DeviceActiveChangedEventArgs> DeviceStatusChanged;
+
+    /// <summary>
+    /// 触发设备状态改变事件
+    /// </summary>
+    /// <param name="sender">事件发送者</param>
+    /// <param name="e">设备状态改变事件参数</param>
+    void RaiseDeviceStatusChanged(object sender, DeviceActiveChangedEventArgs e);
+
+    #endregion
+
+    #region 变量事件
+
+    /// <summary>
+    /// 变量值改变事件
+    /// </summary>
+    event EventHandler<VariableValueChangedEventArgs> VariableValueChanged;
+
+    /// <summary>
+    /// 触发变量值改变事件
+    /// </summary>
+    /// <param name="sender">事件发送者</param>
+    /// <param name="e">变量值改变事件参数</param>
+    void RaiseVariableValueChanged(object sender, VariableValueChangedEventArgs e);
+
+    #endregion
+
+    #region MQTT事件
+
+    /// <summary>
+    /// MQTT连接状态改变事件
+    /// </summary>
+    event EventHandler<MqttConnectionChangedEventArgs> MqttConnectionChanged;
+
+    /// <summary>
+    /// 触发MQTT连接状态改变事件
+    /// </summary>
+    /// <param name="sender">事件发送者</param>
+    /// <param name="e">MQTT连接状态改变事件参数</param>
+    void RaiseMqttConnectionChanged(object sender, MqttConnectionChangedEventArgs e);
+
+    #endregion
+}

DMS.WPF/Interfaces/IWPFDataService.cs

@@ -1,3 +1,5 @@
+using DMS.WPF.Interfaces;
+
 namespace DMS.WPF.Interfaces;
 
 /// <summary>
@@ -34,4 +36,9 @@ public interface IWPFDataService
     /// </summary>
     ILogDataService LogDataService { get; }
     
+    /// <summary>
+    /// 事件服务。
+    /// </summary>
+    IEventService EventService { get; }
+
 }

DMS.WPF/Services/DeviceMonitoringService.cs

@@ -0,0 +1,74 @@
+using System;
+using DMS.WPF.Events;
+using DMS.WPF.Interfaces;
+using Microsoft.Extensions.Logging;
+
+namespace DMS.WPF.Services;
+
+/// <summary>
+/// 设备监控服务，用于监听设备状态改变事件并进行相应处理
+/// </summary>
+public class DeviceMonitoringService
+{
+    private readonly ILogger<DeviceMonitoringService> _logger;
+    private readonly IEventService _eventService;
+    private readonly INotificationService _notificationService;
+
+    /// <summary>
+    /// 初始化DeviceMonitoringService类的新实例
+    /// </summary>
+    /// <param name="logger">日志服务</param>
+    /// <param name="eventService">事件服务</param>
+    /// <param name="notificationService">通知服务</param>
+    public DeviceMonitoringService(
+        ILogger<DeviceMonitoringService> logger,
+        IEventService eventService,
+        INotificationService notificationService)
+    {
+        _logger = logger;
+        _eventService = eventService;
+        _notificationService = notificationService;
+
+        // 订阅设备状态改变事件
+        _eventService.DeviceStatusChanged += OnDeviceStatusChanged;
+    }
+
+    /// <summary>
+    /// 处理设备状态改变事件
+    /// </summary>
+    /// <param name="sender">事件发送者</param>
+    /// <param name="e">设备状态改变事件参数</param>
+    private void OnDeviceStatusChanged(object sender, DeviceActiveChangedEventArgs e)
+    {
+        try
+        {
+            // 记录设备状态改变日志
+            _logger.LogInformation($"设备 {e.DeviceName}(ID: {e.DeviceId}) 状态改变: {e.OldStatus} -> {e.NewStatus}");
+
+            // 根据设备状态改变发送通知
+            string message = e.NewStatus 
+                ? $"设备 {e.DeviceName} 已启动" 
+                : $"设备 {e.DeviceName} 已停止";
+
+            _notificationService.ShowInfo(message);
+
+            // 在这里可以添加更多处理逻辑，例如：
+            // 1. 更新数据库中的设备状态历史记录
+            // 2. 发送邮件或短信通知
+            // 3. 触发其他相关操作
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, $"处理设备 {e.DeviceName} 状态改变事件时发生错误");
+        }
+    }
+
+    /// <summary>
+    /// 释放资源
+    /// </summary>
+    public void Dispose()
+    {
+        // 取消订阅事件
+        _eventService.DeviceStatusChanged -= OnDeviceStatusChanged;
+    }
+}

DMS.WPF/Services/EventService.cs

@@ -0,0 +1,68 @@
+using System;
+using DMS.WPF.Events;
+using DMS.WPF.Interfaces;
+
+namespace DMS.WPF.Services;
+
+/// <summary>
+/// 事件服务实现类，用于统一管理应用程序中的各种事件
+/// </summary>
+public class EventService : IEventService
+{
+    #region 设备事件
+
+    /// <summary>
+    /// 设备状态改变事件
+    /// </summary>
+    public event EventHandler<DeviceActiveChangedEventArgs> DeviceStatusChanged;
+
+    /// <summary>
+    /// 触发设备状态改变事件
+    /// </summary>
+    /// <param name="sender">事件发送者</param>
+    /// <param name="e">设备状态改变事件参数</param>
+    public void RaiseDeviceStatusChanged(object sender, DeviceActiveChangedEventArgs e)
+    {
+        DeviceStatusChanged?.Invoke(sender, e);
+    }
+
+    #endregion
+
+    #region 变量事件
+
+    /// <summary>
+    /// 变量值改变事件
+    /// </summary>
+    public event EventHandler<VariableValueChangedEventArgs> VariableValueChanged;
+
+    /// <summary>
+    /// 触发变量值改变事件
+    /// </summary>
+    /// <param name="sender">事件发送者</param>
+    /// <param name="e">变量值改变事件参数</param>
+    public void RaiseVariableValueChanged(object sender, VariableValueChangedEventArgs e)
+    {
+        VariableValueChanged?.Invoke(sender, e);
+    }
+
+    #endregion
+
+    #region MQTT事件
+
+    /// <summary>
+    /// MQTT连接状态改变事件
+    /// </summary>
+    public event EventHandler<MqttConnectionChangedEventArgs> MqttConnectionChanged;
+
+    /// <summary>
+    /// 触发MQTT连接状态改变事件
+    /// </summary>
+    /// <param name="sender">事件发送者</param>
+    /// <param name="e">MQTT连接状态改变事件参数</param>
+    public void RaiseMqttConnectionChanged(object sender, MqttConnectionChangedEventArgs e)
+    {
+        MqttConnectionChanged?.Invoke(sender, e);
+    }
+
+    #endregion
+}

DMS.WPF/Services/WPFDataService.cs

@@ -45,6 +45,11 @@ public class WPFDataService : IWPFDataService
     /// </summary>
     public ILogDataService LogDataService { get; }
     
+    /// <summary>
+    /// 事件服务。
+    /// </summary>
+    public IEventService EventService { get; }
+
     /// <summary>
     /// WPFDataService 构造函数。
     /// </summary>
@@ -55,7 +60,9 @@ public class WPFDataService : IWPFDataService
         IVariableDataService variableDataService,
         IMenuDataService menuDataService,
         IMqttDataService mqttDataService,
-        ILogDataService logDataService, IVariableTableDataService variableTableDataService)
+        ILogDataService logDataService, 
+        IVariableTableDataService variableTableDataService,
+        IEventService eventService)
     {
         _mapper = mapper;
         _appDataCenterService = appDataCenterService;
@@ -65,6 +72,6 @@ public class WPFDataService : IWPFDataService
         MqttDataService = mqttDataService;
         LogDataService = logDataService;
         VariableTableDataService = variableTableDataService;
-
+        EventService = eventService;
     }
 }

DMS.WPF/ViewModels/DevicesViewModel.cs

@@ -44,9 +44,13 @@ public partial class DevicesViewModel : ViewModelBase, INavigatable
     /// <summary>
     /// 初始化 <see cref="DevicesViewModel"/> 类的新实例。
     /// </summary>
-    /// <param name="logger">日志记录器。</param>
+    /// <param name="mapper">对象映射器。</param>
+    /// <param name="dataStorageService">数据存储服务。</param>
     /// <param name="dialogService">对话框服务。</param>
+    /// <param name="navigationService">导航服务。</param>
     /// <param name="wpfDataService">主数据服务。</param>
+    /// <param name="deviceAppService">设备应用服务。</param>
+    /// <param name="notificationService">通知服务。</param>
     public DevicesViewModel(IMapper mapper,IDataStorageService dataStorageService,
                             IDialogService dialogService, INavigationService navigationService,
                             IWPFDataService wpfDataService, IDeviceAppService deviceAppService,
@@ -60,6 +64,9 @@ public partial class DevicesViewModel : ViewModelBase, INavigatable
         _deviceAppService = deviceAppService;
         _notificationService = notificationService;
         Devices = _dataStorageService.Devices;
+        
+        // 设置DeviceItemViewModel的静态服务引用
+        DeviceItemViewModel.EventService = wpfDataService.EventService;
     }
 
 
@@ -204,5 +211,15 @@ public partial class DevicesViewModel : ViewModelBase, INavigatable
 
     public async Task OnNavigatedToAsync(MenuItemViewModel menu)
     {
+
+        
+    }
+
+    private void OnDeviceIsActiveChanged(object? sender, bool isActive)
+    {
+        if (sender is DeviceItemViewModel deviceItemViewModel)
+        {
+            
+        }
     }
 }

DMS.WPF/ViewModels/Items/DeviceItemViewModel.cs

@@ -3,6 +3,8 @@
 using System.Collections.ObjectModel;
 using CommunityToolkit.Mvvm.ComponentModel;
 using DMS.Core.Enums;
+using DMS.WPF.Events;
+using DMS.WPF.Interfaces;
 
 namespace DMS.WPF.ViewModels.Items;
 
@@ -12,6 +14,9 @@ namespace DMS.WPF.ViewModels.Items;
 /// </summary>
 public partial class DeviceItemViewModel : ObservableObject
 {
+    // 用于访问事件服务的静态属性
+    public static IEventService EventService { get; set; }
+    
     public int Id { get; set; }
 
     [ObservableProperty]
@@ -72,6 +77,19 @@ public partial class DeviceItemViewModel : ObservableObject
         }
     }
 
+    /// <summary>
+    /// 当IsActive属性改变时调用，用于发布设备状态改变事件
+    /// </summary>
+    partial void OnIsActiveChanged(bool oldValue, bool newValue)
+    {
+        // 只有当设备ID有效且事件服务已初始化时才发布事件
+        if (Id > 0 && EventService != null)
+        {
+            // 发布设备状态改变事件
+            EventService.RaiseDeviceStatusChanged(this, new DeviceActiveChangedEventArgs(Id, Name, oldValue, newValue));
+        }
+    }
+
     public ObservableCollection<VariableTableItemViewModel> VariableTables { get; set; } = new();
 
 }