Code Quality: WCT Settings Control

src/Files.App/App.xaml.cs

@@ -141,7 +141,13 @@ private IHost ConfigureHost()
 					.AddSingleton<DrivesViewModel>()
 					.AddSingleton<NetworkDrivesViewModel>()
 					.AddSingleton<OngoingTasksViewModel>()
-					.AddSingleton<AppearanceViewModel>()
+					// Settings ViewModels
+					.AddTransient<AboutViewModel>()
+					.AddTransient<AdvancedViewModel>()
+					.AddTransient<AppearanceViewModel>()
+					.AddTransient<FoldersViewModel>()
+					.AddTransient<GeneralViewModel>()
+					.AddTransient<TagsViewModel>()
 				).Build();
 		}
 

src/Files.App/Files.App.csproj

@@ -1,4 +1,4 @@
-<!--  Copyright (c) 2023 Files Community. Licensed under the MIT License. See the LICENSE.  -->
+<!--  Copyright (c) 2023 Files Community. Licensed under the MIT License. See the LICENSE.  -->
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>

src/Files.App/GlobalUsings.cs

@@ -48,6 +48,7 @@
 global using global::Files.App.UserControls;
 global using global::Files.App.ViewModels;
 global using global::Files.App.ViewModels.UserControls;
+global using global::Files.App.ViewModels.Settings;
 global using global::Files.App.Views;
 global using global::Files.App.Views.LayoutModes;
 global using global::Files.App.Views.Shells;

src/Files.App/UserControls/Settings/ControlHelper.cs

@@ -0,0 +1,21 @@
+// Copyright (c) 2023 Files Community
+// Licensed under the MIT License. See the LICENSE.
+
+using Microsoft.UI.Xaml;
+using Microsoft.UI.Xaml.Controls;
+using Microsoft.UI.Xaml.Data;
+using Microsoft.UI.Xaml.Documents;
+using Microsoft.UI.Xaml.Input;
+using Microsoft.UI.Xaml.Media;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.InteropServices.WindowsRuntime;
+
+namespace Files.App.UserControls
+{
+	internal static partial class ControlHelpers
+	{
+		internal static bool IsXamlRootAvailable { get; } = Windows.Foundation.Metadata.ApiInformation.IsPropertyPresent("Windows.UI.Xaml.UIElement", "XamlRoot");
+	}
+}

src/Files.App/UserControls/Settings/ResourceDictionaryExtensions.cs

@@ -0,0 +1,69 @@
+// Copyright (c) 2023 Files Community
+// Licensed under the MIT License. See the LICENSE.
+
+using Microsoft.UI.Xaml;
+using Microsoft.UI.Xaml.Controls;
+using Microsoft.UI.Xaml.Data;
+using Microsoft.UI.Xaml.Documents;
+using Microsoft.UI.Xaml.Input;
+using Microsoft.UI.Xaml.Media;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.InteropServices.WindowsRuntime;
+
+namespace Files.App.UserControls
+{
+	internal static class ResourceDictionaryExtensions
+	{
+		/// <summary>
+		/// Copies  the <see cref="ResourceDictionary"/> provided as a parameter into the calling dictionary, includes overwriting the source location, theme dictionaries, and merged dictionaries.
+		/// </summary>
+		/// <param name="destination">ResourceDictionary to copy values to.</param>
+		/// <param name="source">ResourceDictionary to copy values from.</param>
+		internal static void CopyFrom(this ResourceDictionary destination, ResourceDictionary source)
+		{
+			if (source.Source != null)
+			{
+				destination.Source = source.Source;
+			}
+			else
+			{
+				// Clone theme dictionaries
+				if (source.ThemeDictionaries != null)
+				{
+					foreach (var theme in source.ThemeDictionaries)
+					{
+						if (theme.Value is ResourceDictionary themedResource)
+						{
+							var themeDictionary = new ResourceDictionary();
+							themeDictionary.CopyFrom(themedResource);
+							destination.ThemeDictionaries[theme.Key] = themeDictionary;
+						}
+						else
+						{
+							destination.ThemeDictionaries[theme.Key] = theme.Value;
+						}
+					}
+				}
+
+				// Clone merged dictionaries
+				if (source.MergedDictionaries != null)
+				{
+					foreach (var mergedResource in source.MergedDictionaries)
+					{
+						var themeDictionary = new ResourceDictionary();
+						themeDictionary.CopyFrom(mergedResource);
+						destination.MergedDictionaries.Add(themeDictionary);
+					}
+				}
+
+				// Clone all contents
+				foreach (var item in source)
+				{
+					destination[item.Key] = item.Value;
+				}
+			}
+		}
+	}
+}