Кнопка обновления и столбец актуального значения

src/Sms.Environment.Linux/LinuxEnvironmentVariableStore.cs

@@ -36,6 +36,16 @@ public sealed class LinuxEnvironmentVariableStore : IEnvironmentVariableStore
         return System.Environment.GetEnvironmentVariable(name);
     }
 
+    public string? GetUserPersistedValue(string name)
+    {
+        if (LoadMergedFromDirectory().TryGetValue(name, out var value))
+        {
+            return value;
+        }
+
+        return null;
+    }
+
     public void Set(string name, string value)
     {
         try

src/Sms.Environment.Windows/WindowsEnvironmentVariableStore.cs

@@ -1,4 +1,5 @@
 using System.Runtime.InteropServices;
+using Microsoft.Win32;
 using Sms.Environment;
 
 namespace Sms.Environment.Windows;
@@ -7,14 +8,23 @@ public sealed class WindowsEnvironmentVariableStore : IEnvironmentVariableStore
 {
     private const int HWND_BROADCAST = 0xffff;
     private const int WM_SETTINGCHANGE = 0x001A;
+    private const string EnvironmentKeyPath = "Environment";
 
     public string? Get(string name) =>
-        System.Environment.GetEnvironmentVariable(name, EnvironmentVariableTarget.User)
+        GetUserPersistedValue(name)
         ?? System.Environment.GetEnvironmentVariable(name, EnvironmentVariableTarget.Process);
 
+    public string? GetUserPersistedValue(string name)
+    {
+        using var key = Registry.CurrentUser.OpenSubKey(EnvironmentKeyPath);
+        return key?.GetValue(name) as string;
+    }
+
     public void Set(string name, string value)
     {
-        System.Environment.SetEnvironmentVariable(name, value, EnvironmentVariableTarget.User);
+        using var key = Registry.CurrentUser.OpenSubKey(EnvironmentKeyPath, writable: true)
+            ?? Registry.CurrentUser.CreateSubKey(EnvironmentKeyPath, writable: true);
+        key.SetValue(name, value, RegistryValueKind.ExpandString);
         System.Environment.SetEnvironmentVariable(name, value, EnvironmentVariableTarget.Process);
         BroadcastEnvironmentChange();
     }
@@ -39,15 +49,36 @@ public sealed class WindowsEnvironmentVariableStore : IEnvironmentVariableStore
     public IReadOnlyDictionary<string, string> GetProcessEnvironment() =>
         ToDictionary(System.Environment.GetEnvironmentVariables(EnvironmentVariableTarget.Process));
 
-    public IReadOnlyDictionary<string, string> GetUserPersistedEnvironment() =>
+    public IReadOnlyDictionary<string, string> GetUserPersistedEnvironment()
-        ToDictionary(System.Environment.GetEnvironmentVariables(EnvironmentVariableTarget.User));
+    {
+        var result = new Dictionary<string, string>(StringComparer.Ordinal);
+        using var key = Registry.CurrentUser.OpenSubKey(EnvironmentKeyPath);
+        if (key is null)
+        {
+            return result;
+        }
 
-    public bool IsPersistedInUserStore(string name) =>
+        foreach (var name in key.GetValueNames())
-        System.Environment.GetEnvironmentVariable(name, EnvironmentVariableTarget.User) is not null;
+        {
+            if (key.GetValue(name) is string value)
+            {
+                result[name] = value;
+            }
+        }
+
+        return result;
+    }
+
+    public bool IsPersistedInUserStore(string name)
+    {
+        using var key = Registry.CurrentUser.OpenSubKey(EnvironmentKeyPath);
+        return key?.GetValue(name) is not null;
+    }
 
     public void RemoveFromUserStore(string name)
     {
-        System.Environment.SetEnvironmentVariable(name, null, EnvironmentVariableTarget.User);
+        using var key = Registry.CurrentUser.OpenSubKey(EnvironmentKeyPath, writable: true);
+        key?.DeleteValue(name, throwOnMissingValue: false);
         System.Environment.SetEnvironmentVariable(name, null, EnvironmentVariableTarget.Process);
         BroadcastEnvironmentChange();
     }

src/Sms.Environment/IEnvironmentVariableStore.cs

@@ -4,6 +4,8 @@ public interface IEnvironmentVariableStore
 {
     string? Get(string name);
 
+    string? GetUserPersistedValue(string name);
+
     void Set(string name, string value);
 
     bool Exists(string name);

src/Sms.TaskTwo.Avalonia/Views/MainWindow.axaml

@@ -41,10 +41,18 @@
                 Click="OnCloseClick" />
       </Grid>
 
-      <CheckBox Grid.Row="1"
+      <Grid Grid.Row="1"
-                Margin="12,8,12,0"
+            Margin="12,8,12,0"
-                Content="Отображать все переменные"
+            ColumnDefinitions="*,Auto"
-                IsChecked="{Binding ShowAllVariables}" />
+            ColumnSpacing="8">
+        <CheckBox Content="Отображать все переменные"
+                  IsChecked="{Binding ShowAllVariables}"
+                  VerticalAlignment="Center" />
+        <Button Grid.Column="1"
+                Content="Обновить"
+                Command="{Binding RefreshCommand}"
+                MinWidth="100" />
+      </Grid>
 
       <Grid Grid.Row="2"
             Margin="12,8,12,0"
@@ -92,13 +100,21 @@
           <DataGridTextColumn Header="Поле"
                               Binding="{Binding Field}"
                               IsReadOnly="True"
-                              Width="2*" />
+                              Width="210"
-          <DataGridTextColumn Header="Значение"
+                              MinWidth="150" />
-                              Binding="{Binding Value, Mode=TwoWay}"
+          <DataGridTextColumn Header="Требуемое значение"
-                              Width="3*" />
+                              Binding="{Binding RequiredValue, Mode=TwoWay}"
+                              Width="2*"
+                              MinWidth="140" />
+          <DataGridTextColumn Header="Актуальное значение"
+                              Binding="{Binding ActualValueDisplay}"
+                              IsReadOnly="True"
+                              Width="2*"
+                              MinWidth="140" />
           <DataGridTextColumn Header="Комментарий"
                               Binding="{Binding Comment, Mode=TwoWay}"
-                              Width="3*" />
+                              Width="240"
+                              MinWidth="180" />
           <DataGridTemplateColumn Header=""
                                   Width="80">
             <DataGridTemplateColumn.CellTemplate>

src/Sms.TaskTwo.Core/Services/EnvironmentVariablesService.cs

@@ -49,7 +49,7 @@ public sealed class EnvironmentVariablesService
                 continue;
             }
 
-            var value = ResolveValue(name);
+            var value = ResolveRequiredValue(name);
             _store.Set(name, value);
             _log.WriteLine(
                 $"{DateTime.Now:yyyy-MM-dd HH:mm:ss} [INFO] Created configured variable: {name}={value}");
@@ -64,7 +64,7 @@ public sealed class EnvironmentVariablesService
 
         foreach (var name in _options.Names)
         {
-            rows.Add(CreateRow(name, ResolveValue(name)));
+            rows.Add(CreateRow(name, ResolveRequiredValue(name)));
             knownNames.Add(name);
         }
 
@@ -72,7 +72,7 @@ public sealed class EnvironmentVariablesService
         {
             if (knownNames.Add(name))
             {
-                rows.Add(CreateRow(name, ResolveValue(name)));
+                rows.Add(CreateRow(name, ResolveRequiredValue(name)));
             }
         }
 
@@ -89,7 +89,7 @@ public sealed class EnvironmentVariablesService
                 continue;
             }
 
-            rows.Add(CreateRow(pair.Key, pair.Value));
+            rows.Add(CreateRow(pair.Key, ResolveRequiredValue(pair.Key)));
         }
 
         return rows;
@@ -137,14 +137,17 @@ public sealed class EnvironmentVariablesService
     public EnvironmentVariableRow GetRowSnapshot(string name)
     {
         ReloadMetadata();
-        return CreateRow(name, ResolveValue(name));
+        return CreateRow(name, ResolveRequiredValue(name));
     }
 
-    public string GetDisplayValue(string name) => ResolveValue(name);
+    public string GetDisplayValue(string name) => ResolveRequiredValue(name);
+
+    public string? GetProcessValue(string name) =>
+        _store.GetProcessEnvironment().TryGetValue(name, out var value) ? value : null;
 
     public void SaveValue(string name, string value)
     {
-        var previous = _store.Get(name);
+        var previous = _store.GetUserPersistedValue(name);
         _store.Set(name, value);
         _log.WriteLine(
             $"{DateTime.Now:yyyy-MM-dd HH:mm:ss} [INFO] Changed value: {name}={value} (previous: {previous ?? "<none>"})");
@@ -183,7 +186,7 @@ public sealed class EnvironmentVariablesService
             return;
         }
 
-        var previous = _store.Get(name);
+        var previous = _store.GetUserPersistedValue(name);
         _store.RemoveFromUserStore(name);
         _log.WriteLine(
             $"{DateTime.Now:yyyy-MM-dd HH:mm:ss} [INFO] Removed from user store: {name} (previous: {previous ?? "<none>"})");
@@ -215,17 +218,21 @@ public sealed class EnvironmentVariablesService
         string.Equals(name, _options.CommentsVariableName, StringComparison.Ordinal)
         || string.Equals(name, _options.CustomVariablesVariableName, StringComparison.Ordinal);
 
-    private string ResolveValue(string name)
+    private string ResolveRequiredValue(string name)
     {
-        var existing = _store.Get(name);
+        if (_store.GetUserPersistedValue(name) is { } persisted)
-        if (existing is not null)
         {
-            return existing;
+            return persisted;
         }
 
-        if (_options.Defaults.TryGetValue(name, out var defaultValue))
+        if (_configuredNames.Contains(name) || _customNames.Contains(name))
         {
-            return defaultValue;
+            if (_options.Defaults.TryGetValue(name, out var defaultValue))
+            {
+                return defaultValue;
+            }
+
+            return string.Empty;
         }
 
         return string.Empty;

src/Sms.TaskTwo.ViewModels/EnvironmentVariableRowViewModel.cs

@@ -17,6 +17,7 @@ public sealed partial class EnvironmentVariableRowViewModel : ObservableObject
         IsCustom = row.IsCustom;
         _service = service;
         ApplySnapshot(row, suppressSave: true);
+        RefreshActualValue(_service.GetProcessValue(Field));
     }
 
     public string Field { get; }
@@ -28,10 +29,16 @@ public sealed partial class EnvironmentVariableRowViewModel : ObservableObject
     [ObservableProperty]
     private bool _isPersistedInUserStore;
 
+    [ObservableProperty]
+    private string _actualValue = string.Empty;
+
+    public string ActualValueDisplay =>
+        string.IsNullOrEmpty(ActualValue) ? "<нет>" : ActualValue;
+
     public string UserStoreBadge => IsPersistedInUserStore ? "USER" : string.Empty;
 
     [ObservableProperty]
-    private string _value = string.Empty;
+    private string _requiredValue = string.Empty;
 
     [ObservableProperty]
     private string _comment = string.Empty;
@@ -43,30 +50,9 @@ public sealed partial class EnvironmentVariableRowViewModel : ObservableObject
         RowAppearanceChanged?.Invoke(this, EventArgs.Empty);
     }
 
-    public event EventHandler? RowAppearanceChanged;
+    partial void OnActualValueChanged(string value) => OnPropertyChanged(nameof(ActualValueDisplay));
 
-    public void ApplySnapshot(EnvironmentVariableRow row, bool suppressSave = false)
+    partial void OnRequiredValueChanged(string value)
-    {
-        if (suppressSave)
-        {
-            BeginLoad();
-        }
-
-        Value = row.Value;
-        Comment = row.Comment;
-        IsPersistedInUserStore = row.IsPersistedInUserStore;
-
-        if (suppressSave)
-        {
-            EndLoad();
-        }
-    }
-
-    public void BeginLoad() => _isLoading = true;
-
-    public void EndLoad() => _isLoading = false;
-
-    partial void OnValueChanged(string value)
     {
         if (_isLoading)
         {
@@ -78,8 +64,38 @@ public sealed partial class EnvironmentVariableRowViewModel : ObservableObject
         {
             IsPersistedInUserStore = true;
         }
+
+        RefreshActualValue(_service.GetProcessValue(Field));
     }
 
+    public event EventHandler? RowAppearanceChanged;
+
+    public void ApplySnapshot(EnvironmentVariableRow row, bool suppressSave = false)
+    {
+        if (suppressSave)
+        {
+            BeginLoad();
+        }
+
+        RequiredValue = row.Value;
+        Comment = row.Comment;
+        IsPersistedInUserStore = row.IsPersistedInUserStore;
+
+        if (suppressSave)
+        {
+            EndLoad();
+        }
+    }
+
+    public void RefreshActualValue(string? processValue)
+    {
+        ActualValue = processValue ?? string.Empty;
+    }
+
+    public void BeginLoad() => _isLoading = true;
+
+    public void EndLoad() => _isLoading = false;
+
     partial void OnCommentChanged(string value)
     {
         if (_isLoading)
@@ -103,8 +119,9 @@ public sealed partial class EnvironmentVariableRowViewModel : ObservableObject
         _service.DeleteFromUserStore(Field);
         BeginLoad();
         IsPersistedInUserStore = false;
-        Value = _service.GetDisplayValue(Field);
+        RequiredValue = _service.GetDisplayValue(Field);
         EndLoad();
+        RefreshActualValue(_service.GetProcessValue(Field));
     }
 
     public event EventHandler? Removed;

src/Sms.TaskTwo.ViewModels/MainWindowViewModel.cs

@@ -35,6 +35,13 @@ public sealed partial class MainWindowViewModel : ObservableObject
 
     partial void OnNewVariableNameChanged(string value) => AddVariableCommand.NotifyCanExecuteChanged();
 
+    [RelayCommand]
+    private void Refresh()
+    {
+        SyncRowsFromService();
+        RefreshProcessStates();
+    }
+
     [RelayCommand(CanExecute = nameof(CanAddVariable))]
     private void AddVariable()
     {
@@ -121,6 +128,16 @@ public sealed partial class MainWindowViewModel : ObservableObject
                 MoveItem(Rows, currentIndex, targetIndex);
             }
         }
+
+        RefreshProcessStates();
+    }
+
+    private void RefreshProcessStates()
+    {
+        foreach (var row in Rows)
+        {
+            row.RefreshActualValue(_service.GetProcessValue(row.Field));
+        }
     }
 
     private static void MoveItem(