switched to yaml as filee format

App.xaml.cs

@@ -11,7 +11,7 @@ namespace ModernWpfPlayground
         protected override void RegisterTypes(IContainerRegistry containerRegistry)
         {
             containerRegistry.Register<MainWindow>();
-            containerRegistry.Register<WindowViewModel>();
+            containerRegistry.Register<MainWindowViewModel>();
         }
 
         protected override Window CreateShell()

MainWindow.xaml

@@ -1,17 +1,20 @@
-<Window
+    
+<Window
     x:Class="ModernWpfPlayground.MainWindow"
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
     xmlns:local="clr-namespace:ModernWpfPlayground"
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    xmlns:prism="http://prismlibrary.com/"
     xmlns:propertyPresenter2="clr-namespace:ModernWpfPlayground.PropertyPresenter2"
     xmlns:ui="http://schemas.modernwpf.com/2019"
     x:Name="Window"
     Title="{Binding Title}"
     Width="1200"
     Height="600"
-    d:DataContext="{d:DesignInstance local:WindowViewModel}"
+    d:DataContext="{d:DesignInstance local:MainWindowViewModel}"
+    prism:ViewModelLocator.AutoWireViewModel="True"
     ui:ThemeManager.IsThemeAware="True"
     ui:TitleBar.ExtendViewIntoTitleBar="True"
     ui:WindowHelper.UseModernWindowStyle="True"

MainWindow.xaml.cs

@@ -5,10 +5,9 @@
     /// </summary>
     public partial class MainWindow
     {
-        public MainWindow(WindowViewModel viewModel)
+        public MainWindow()
         {
             InitializeComponent();
-            DataContext = viewModel;
         }
     }
 }

MainWindowViewModel.cs

@@ -1,6 +1,5 @@
 using System.Collections.Generic;
 using System.IO;
-using System.Text.Json;
 using System.Threading.Tasks;
 using System.Windows;
 using System.Windows.Input;
@@ -8,16 +7,19 @@ using Microsoft.Win32;
 using ModernWpf;
 using ModernWpfPlayground.MvvmStuff;
 using Prism.Commands;
+using YamlDotNet.Serialization;
 
 namespace ModernWpfPlayground
 {
-    public class WindowViewModel : BaseViewModel
+    public class MainWindowViewModel : BaseViewModel
     {
         private const string AppName = "TaBEA 3.0.0";
         private string? _path;
         private string _title = AppName;
+        private readonly ISerializer _serializer;
+        private readonly IDeserializer _deserializer;
 
-        public WindowViewModel()
+        public MainWindowViewModel()
         {
             ShowDialogCommand = new DelegateCommand(async () => await ShowDialogAsync().ConfigureAwait(false));
             CloseCommand = new DelegateCommand(() => Application.Current.Shutdown());
@@ -28,6 +30,8 @@ namespace ModernWpfPlayground
                 ResetViewModel();
                 Path = null;
             });
+            _serializer = new SerializerBuilder().Build();
+            _deserializer = new DeserializerBuilder().Build();
         }
 
         public string? Path
@@ -114,10 +118,10 @@ namespace ModernWpfPlayground
 
         private void SaveViewModel()
         {
-            var contents = JsonSerializer.Serialize(Values);
+            var contents = _serializer.Serialize(Values);
             if (Path == null)
             {
-                var saveFileDialog = new SaveFileDialog {AddExtension = true, DefaultExt = "*.json"};
+                var saveFileDialog = new SaveFileDialog {AddExtension = true, DefaultExt = "*.yaml"};
                 var result = saveFileDialog.ShowDialog(Application.Current.MainWindow?.Owner);
                 if (result != true) return;
                 Path = saveFileDialog.FileName;
@@ -128,15 +132,16 @@ namespace ModernWpfPlayground
 
         protected override IEnumerable<(string key, object? value)> GetViewModelItems()
         {
-            var openFileDialog = new OpenFileDialog {AddExtension = true, DefaultExt = "*.json"};
+            var openFileDialog = new OpenFileDialog {AddExtension = true, DefaultExt = "*.yaml"};
             var result = openFileDialog.ShowDialog(Application.Current.MainWindow?.Owner);
             if (result != true) yield break;
 
             var contents = File.ReadAllText(Path = openFileDialog.FileName);
-            var obj = JsonSerializer.Deserialize<Dictionary<string, JsonElement>>(contents);
+
+            var obj = _deserializer.Deserialize<Dictionary<string, object>>(contents);
             foreach (var (key, value) in obj)
             {
-                yield return (key, value.Convert(ObjectAccessor[key].GetType()));
+                yield return (key, DeserializationExtension.Convert(value, ObjectAccessor[key].GetType()));
             }
         }
     }

ModernWpfPlayground.csproj

@@ -12,6 +12,7 @@
     <PackageReference Include="ModernWpfUI" Version="0.8.2" />
     <PackageReference Include="Prism.DryIoc" Version="7.2.0.1422" />
     <PackageReference Include="Prism.Wpf" Version="7.2.0.1422" />
+    <PackageReference Include="YamlDotNet" Version="8.1.0" />
     <PackageReference Include="System.Drawing.Common" Version="4.7.0" />
   </ItemGroup>
 

MvvmStuff/BaseViewModel.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using System.Runtime.CompilerServices;
 using FastMember;
 using Prism.Mvvm;
@@ -36,9 +37,11 @@ namespace ModernWpfPlayground.MvvmStuff
             return Values.TryGetValue(propertyName, out var obj) ? (T)obj : defaultValue;
         }
 
-        protected void ResetViewModel()
+        protected void ResetViewModel(Func<string, bool>? predicate = null)
         {
-            foreach (var key in Values.Keys)
+            IEnumerable<string> keys = _values.Keys;
+            if (predicate != null) keys = keys.Where(predicate);
+            foreach (var key in keys)
             {
                 _values.Remove(key);
                 RaisePropertyChanged(key);
@@ -49,10 +52,14 @@ namespace ModernWpfPlayground.MvvmStuff
 
         protected void LoadViewModel()
         {
+            var keysFromFile = new SortedSet<string>();
             foreach (var (key, value) in GetViewModelItems())
             {
+                keysFromFile.Add(key);
                 ObjectAccessor[key] = value;
             }
+
+            ResetViewModel(x => !keysFromFile.Contains(x));
         }
     }
 }

MvvmStuff/DeserializationExtension.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Globalization;
+
+namespace ModernWpfPlayground.MvvmStuff
+{
+    public static class DeserializationExtension
+    {
+        public static object? Convert(object? value, Type propertyType)
+        {
+            if (value is null) return Activator.CreateInstance(propertyType);
+
+            if (propertyType.IsEnum && value is string s)
+            {
+                return Enum.Parse(propertyType, s);
+            }
+
+            return System.Convert.ChangeType(value, propertyType, CultureInfo.InvariantCulture);
+        }
+    }
+}

MvvmStuff/PropertyInfoExtension.cs

@@ -1,40 +0,0 @@
-using System;
-using System.Text.Json;
-
-namespace ModernWpfPlayground.MvvmStuff
-{
-    public static class PropertyInfoExtension
-    {
-        public static object? Convert(this JsonElement value, Type propertyType)
-        {
-            if (propertyType == null) return default;
-
-            if (propertyType == typeof(double))
-            {
-                return value.GetDouble();
-            }
-
-            if (propertyType == typeof(bool))
-            {
-                return value.GetBoolean();
-            }
-
-            if (propertyType == typeof(int))
-            {
-                return value.GetInt32();
-            }
-
-            if (propertyType.IsEnum)
-            {
-                return Enum.ToObject(propertyType, value.GetInt32());
-            }
-
-            if (propertyType == typeof(string))
-            {
-                return value.GetString();
-            }
-
-            return default;
-        }
-    }
-}