Implemented a settings page and settings provider.

Directory.Packages.props

@@ -19,6 +19,8 @@
     <PackageVersion Include="Deadpikle.AvaloniaProgressRing" Version="0.10.11-preview20251127001" />
     <PackageVersion Include="DialogHost.Avalonia" Version="0.10.4" />
     <PackageVersion Include="Jint" Version="4.5.0" />
+    <PackageVersion Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="10.0.2" />
+    <PackageVersion Include="Microsoft.Extensions.Configuration.Json" Version="10.0.2" />
     <PackageVersion Include="Microsoft.Maui.Graphics" Version="10.0.11" />
     <PackageVersion Include="Microsoft.Maui.Graphics.Skia" Version="10.0.11" />
     <PackageVersion Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" Version="1.23.0" />

Progrart.Browser/Program.cs

@@ -1,14 +1,18 @@
-using System.Runtime.Versioning;
+using Avalonia;
-using System.Threading.Tasks;
-using Avalonia;
 using Avalonia.Browser;
 using Progrart;
+using Progrart.Browser.Settings;
+using System.Threading.Tasks;
 
 internal sealed partial class Program
 {
-    private static Task Main(string[] args) => BuildAvaloniaApp()
+	private static Task Main(string[] args)
+	{
+		App.SettingsProvider=new BrowserSettingsProvider();
+		return BuildAvaloniaApp()
 			.WithInterFont()
 			.StartBrowserAppAsync("out");
+	}
 
 	public static AppBuilder BuildAvaloniaApp()
         => AppBuilder.Configure<App>();

Progrart.Browser/Settings/BrowserSettingsProvider.cs

@@ -0,0 +1,29 @@
+using Progrart.Core.Settings;
+using System.Runtime.InteropServices.JavaScript;
+using System.Text.Json;
+
+namespace Progrart.Browser.Settings
+{
+	public partial class BrowserSettingsProvider : ISettingsProvider
+	{
+		private SerializeContext context=new SerializeContext();
+		[JSImport("globalThis.localStorage.setItem")]
+		private static partial void SetItem(string key, string value);
+
+		[JSImport("globalThis.localStorage.getItem")]
+		private static partial string GetItem(string key);
+		public AppConfig LoadSettings()
+		{
+			var json = GetItem("progrart.settings");
+			return json != null
+				? JsonSerializer.Deserialize<AppConfig>(json,context.AppConfig)??new AppConfig()
+				: new AppConfig();
+		}
+
+		public void SaveSettings(AppConfig config)
+		{
+			var json = JsonSerializer.Serialize(config,context.AppConfig)??"";
+			SetItem("progrart.settings", json);
+		}
+	}
+}

Progrart/App.axaml.cs

@@ -2,14 +2,16 @@ using Avalonia;
 using Avalonia.Controls.ApplicationLifetimes;
 using Avalonia.Data.Core;
 using Avalonia.Data.Core.Plugins;
-using System.Linq;
 using Avalonia.Markup.Xaml;
-using Progrart.Views;
+using Avalonia.Platform.Storage;
+using Microsoft.Extensions.Configuration;
+using Progrart.Core.ProjectSystem;
+using Progrart.Core.Settings;
 using Progrart.Icons;
 using Progrart.Pages;
-using Avalonia.Platform.Storage;
+using Progrart.Views;
 using System;
-using Progrart.Core.ProjectSystem;
+using System.Linq;
 
 namespace Progrart;
 
@@ -19,6 +21,7 @@ public partial class App : Application
 	public static IStorageFolder? CurrentOpenFolder = null;
 	public static Project? LoadedProject = null;
 	internal static Action? ProjectLoadHandler = null;
+	public static ISettingsProvider? SettingsProvider = null;
 	public static void ProjectLoad()
 	{
 		ProjectLoadHandler?.Invoke();
@@ -27,7 +30,6 @@ public partial class App : Application
 	{
 		AvaloniaXamlLoader.Load(this);
 	}
-
 	public override void OnFrameworkInitializationCompleted()
 	{
 		IconProvider.Register(new DefaultIconProvider());
@@ -53,6 +55,10 @@ public partial class App : Application
 		EditorProvider.BindFileType("jpg", "image");
 		EditorProvider.BindFileType("progrart-project", "project");
 		EditorProvider.BindFileType("wd", "console");
+		if (!OperatingSystem.IsBrowser())
+		{
+			App.SettingsProvider = new ClassicSettingsProvider();
+		}
 		if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
 		{
 			// Avoid duplicate validations from both Avalonia and the CommunityToolkit. 

Progrart/Core/Settings/ClassicSettingsProvider.cs

@@ -0,0 +1,33 @@
+using System;
+using System.IO;
+using System.Text.Json;
+
+namespace Progrart.Core.Settings
+{
+	public class ClassicSettingsProvider : ISettingsProvider
+	{
+		private readonly string _filePath;
+		private SerializeContext context = new SerializeContext();
+		public ClassicSettingsProvider()
+		{
+			var folder = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);
+			var appFolder = Path.Combine(folder, "Progrart");
+			Directory.CreateDirectory(appFolder);
+			_filePath = Path.Combine(appFolder, "settings.json");
+		}
+
+		public void SaveSettings(AppConfig settings)
+		{
+			var json = JsonSerializer.Serialize(settings, context.AppConfig);
+			File.WriteAllText(_filePath, json);
+		}
+
+		public AppConfig LoadSettings()
+		{
+			if (!File.Exists(_filePath)) return new AppConfig();
+
+			var json = File.ReadAllText(_filePath);
+			return JsonSerializer.Deserialize<AppConfig>(json, context.AppConfig) ?? new AppConfig();
+		}
+	}
+}

Progrart/Core/Settings/ISettingsProvider.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Text.Json.Serialization;
+
+namespace Progrart.Core.Settings
+{
+	public interface ISettingsProvider
+	{
+		void SaveSettings(AppConfig config);
+		AppConfig LoadSettings();
+	}
+	[Serializable]
+	public class AppConfig
+	{
+		public bool useParallelBuild { get; set; }
+		public int JobCount { get; set; }
+	}
+	[JsonSerializable(typeof(AppConfig))]
+	public partial class SerializeContext : JsonSerializerContext
+	{
+
+	}
+}

Progrart/Pages/SettingsPage.axaml

@@ -0,0 +1,47 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+			 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+			 xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+			 xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+			 mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+			 x:Class="Progrart.Pages.SettingsPage">
+	<UserControl.Styles>
+		<Style Selector="TextBlock.h1">
+			<Setter Property="FontSize" Value="20"/>
+			<Setter Property="Margin" Value="5"/>
+		</Style>
+		<Style Selector="TextBlock.h2">
+			<Setter Property="FontSize" Value="18"/>
+			<Setter Property="Margin" Value="5"/>
+		</Style>
+		<Style Selector="Expander">
+			<Setter Property="HorizontalAlignment" Value="Stretch"/>
+		</Style>
+	</UserControl.Styles>
+	<Grid>
+		<Grid.RowDefinitions>
+			<RowDefinition Height="Auto"/>
+			<RowDefinition/>
+		</Grid.RowDefinitions>
+		<Grid>
+			<TextBlock Text="Settings" Classes="h1" VerticalAlignment="Center"/>
+			<Button Name="SaveSettings" HorizontalAlignment="Right" VerticalAlignment="Center" Click="SaveSettings_Click">
+				<PathIcon Data="F1 M 3.36 11.959999 C 3.28 11.853333 3.173333 11.799999 3.04 11.799999 C 2.906667 11.799999 2.786666 11.846666 2.68 11.94 C 2.573333 12.033334 2.513333 12.146667 2.5 12.28 C 2.486667 12.413334 2.533333 12.533333 2.64 12.639999 L 6.64 17.119999 C 6.719999 17.226665 6.833333 17.286667 6.98 17.299999 C 7.126667 17.313332 7.253333 17.266666 7.36 17.16 L 17.84 6.639999 C 17.946667 6.56 18 6.446667 18 6.299999 C 18 6.153334 17.953331 6.033334 17.859999 5.94 C 17.766666 5.846666 17.646666 5.799999 17.5 5.799999 C 17.353333 5.799999 17.239998 5.853333 17.16 5.96 L 7.04 16.08 Z " VerticalAlignment="Center" HorizontalAlignment="Center" />
+			</Button>
+		</Grid>
+		<ScrollViewer Grid.Row="1">
+			<StackPanel>
+				<Expander>
+					<Expander.Header>
+						<TextBlock Text="Builder" Classes="h2"/>
+					</Expander.Header>
+					<StackPanel Margin="10">
+						<TextBlock>Use Parallel Building</TextBlock>
+						<ToggleSwitch Name="useParallelBuilding"/>
+						<TextBlock Text="Job Count ( -1 for Processor Count)" VerticalAlignment="Center" TextWrapping="Wrap"/>
+						<NumericUpDown Minimum="-1" Maximum="1024" Value="-1" Name="JobCont" FormatString="0" HorizontalAlignment="Left"/>
+					</StackPanel>
+				</Expander>
+			</StackPanel>
+		</ScrollViewer>
+	</Grid>
+</UserControl>

Progrart/Pages/SettingsPage.axaml.cs

@@ -0,0 +1,51 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Markup.Xaml;
+using Microsoft.Extensions.Configuration;
+using Progrart.Controls.TabSystem;
+using Progrart.Core.Settings;
+
+namespace Progrart.Pages;
+
+public partial class SettingsPage : UserControl, ITabPage
+{
+	public SettingsPage()
+	{
+		InitializeComponent();
+		if ((App.SettingsProvider) != null)
+		{
+			var settings = App.SettingsProvider.LoadSettings();
+			{
+				useParallelBuilding.IsChecked = settings.useParallelBuild;
+				JobCont.Value = settings.JobCount;
+			}
+		}
+	}
+
+	public void BindButton(TabButton button)
+	{
+		button.Title = "Settings";
+	}
+
+	public bool IsModified()
+	{
+		return false;
+	}
+
+	public void SetHost(TabHost host)
+	{
+	}
+
+
+	private void SaveSettings_Click(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
+	{
+		if (App.SettingsProvider is null) return;
+
+		AppConfig config = new AppConfig()
+		{
+			useParallelBuild = useParallelBuilding.IsChecked ?? false,
+			JobCount = (int)(JobCont.Value ?? -1)
+		};
+		App.SettingsProvider.SaveSettings(config);
+	}
+}

Progrart/Progrart.csproj

@@ -28,6 +28,8 @@
 		<PackageReference Include="AvaloniaEdit.TextMate" />
 		<PackageReference Include="Deadpikle.AvaloniaProgressRing" />
 		<PackageReference Include="DialogHost.Avalonia" />
+		<PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" />
+		<PackageReference Include="Microsoft.Extensions.Configuration.Json" />
 		<PackageReference Include="PanAndZoom" />
 		<!--<PackageReference Include="Devolutions.AvaloniaTheme.DevExpress" />
     <PackageReference Include="Devolutions.AvaloniaTheme.MacOS" />-->

Progrart/Views/MainView.axaml

@@ -50,7 +50,7 @@
 										<MenuItem Header="Save _As"/>
 									</MenuItem>
 									<MenuItem Header="_Tools">
-										<MenuItem Header="_Settings"/>
+										<MenuItem Header="_Settings" Name="SettingsMenuItem" Click="SettingsMenuItem_Click"/>
 									</MenuItem>
 									<MenuItem Header="_Help">
 										<MenuItem Header="_About" Name="AboutItem"/>

Progrart/Views/MainView.axaml.cs

@@ -2,12 +2,14 @@ using Acornima.Ast;
 using Avalonia.Controls;
 using Avalonia.Platform.Storage;
 using Avalonia.Threading;
+using Microsoft.Extensions.Configuration;
 using Newtonsoft.Json;
 using Progrart.Commands;
 using Progrart.Controls;
 using Progrart.Core;
 using Progrart.Core.JSExecution;
 using Progrart.Core.ProjectSystem;
+using Progrart.Core.Settings;
 using Progrart.Core.Storage;
 using Progrart.Pages;
 using System;
@@ -264,7 +266,15 @@ public partial class MainView : UserControl
 					ProgressGrid.IsVisible = false;
 				});
 			};
-			Task.Run(async () => await builder.Build(name, -1));
+			AppConfig app_config = new AppConfig();
+			if (App.SettingsProvider != null)
+				app_config = App.SettingsProvider.LoadSettings();
+			Task.Run(async () => await builder.Build(name, app_config.useParallelBuild == false ? 1 : app_config.JobCount));
 		}
 	}
+
+	private void SettingsMenuItem_Click(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
+	{
+		MainTabHost.AddPage(new SettingsPage());
+	}
 }