1 feat: 添加变量导入模板配置和工厂模式实现

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

DMS.Application/Configurations/AppSettings.cs

@@ -3,10 +3,15 @@ using Newtonsoft.Json;
 
 namespace DMS.Application.Configurations
 {
-   
+
 
     public class AppSettings
     {
+        private static readonly string SettingsFilePath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, ConfigJsonFileName);
+
+        private const string ConfigJsonFileName = "dms_config.json";
+
+
         public class Database
         {
             public string DbType { get; set; } = "MySql";
@@ -16,37 +21,47 @@ namespace DMS.Application.Configurations
             public string Password { get; set; } = "Pgw15221236646";
             public string DbName { get; set; } = "dms_test";
         }
-        
-        
+
+
         public Database Db { get; set; } = new Database();
+
+        public Variable VariableImportTemplate = new Variable()
+        {
+            IsActive = true,
+            PollingInterval = 30000,
+            IsHistoryEnabled = true,
+            HistoryDeadband = 0
+        };
+
         public string Theme { get; set; } = "跟随系统";
-        public bool EnableS7Service { get; set; } = true;
-        public bool EnableMqttService { get; set; } = true;
-        public bool EnableOpcUaService { get; set; } = true;
         public bool MinimizeToTrayOnClose { get; set; } = true;
-        public List<MenuBean> Menus { get; set; } = new List<MenuBean>();
 
-        public int DefaultPollingInterval { get; set; } = 30000; // 默认轮询间隔30秒
-
-        private static readonly string SettingsFilePath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, ConfigJsonFileName);
         
-        private const string ConfigJsonFileName = "dms_config.json";
 
-        public  AppSettings? Load()
+        public void Load()
         {
             if (File.Exists(SettingsFilePath))
             {
                 string json = File.ReadAllText(SettingsFilePath);
                 AppSettings? appSettings = JsonConvert.DeserializeObject<AppSettings>(json);
-                return appSettings ?? throw new InvalidOperationException("加载配置文件出现了错误。");
+                if (appSettings != null)
+                {
+                    this.Db= appSettings.Db;
+                    this.VariableImportTemplate = appSettings.VariableImportTemplate;
+                    this.Theme=appSettings.Theme;
+                    this.MinimizeToTrayOnClose=appSettings.MinimizeToTrayOnClose;
+                }
+                else
+                {
+                    throw new InvalidOperationException("加载配置文件出现了错误。");
+                }
             }
-                return null;
         }
 
         public void Save()
         {
-            string json = JsonConvert.SerializeObject(this, Formatting.Indented);
-            File.WriteAllText(SettingsFilePath, json);
+                string json = JsonConvert.SerializeObject(this, Formatting.Indented);
+                File.WriteAllText(SettingsFilePath, json);
         }
 
         public string ToConnectionString()