feat: adding updating dialog during the application update

#6

Author: ProgrammingByPermutation

src/TwitchStreamingTools/ViewModels/MainWindowViewModel.cs

@@ -30,6 +30,11 @@ public class MainWindowViewModel : ViewModelBase {
   /// </summary>
   private bool _isMenuOpen;
 
+  /// <summary>
+  ///   True if the application is updating, false otherwise.
+  /// </summary>
+  private bool _isUpdating;
+
   /// <summary>
   ///   The open page.
   /// </summary>
@@ -102,6 +107,14 @@ public MenuItem SelectedMenuItem {
     set => this.RaiseAndSetIfChanged(ref _selectedMenuItem, value);
   }
 
+  /// <summary>
+  ///   True if the application is updating, false otherwise.
+  /// </summary>
+  public bool IsUpdating {
+    get => _isUpdating;
+    set => this.RaiseAndSetIfChanged(ref _isUpdating, value);
+  }
+
   /// <summary>
   ///   Links the <see cref="Page" /> showing on the screen with changes to the <see cref="SelectedMenuItem" />.
   /// </summary>

src/TwitchStreamingTools/Views/MainWindow.axaml

@@ -47,7 +47,22 @@
                VerticalAlignment="Stretch"
                Name="ContentWrapper">
         <views:WindowsTitleBar IsSeamless="True" />
-        <DockPanel Background="Transparent">
+        <!-- The Application is Currently Updating and Not Usable!: This must come first because the final item always fills. -->
+        <DockPanel Background="Transparent" DockPanel.Dock="Top" IsVisible="{Binding IsUpdating}">
+            <StackPanel>
+                <Label HorizontalAlignment="Center"
+                       VerticalAlignment="Center"
+                       FontSize="32"
+                       FontWeight="Bold"
+                       Foreground="rgb(204, 200, 175)"
+                       Padding="0 50 0 0">
+                    Updating
+                </Label>
+                <views:Loading Width="100" Height="100" />
+            </StackPanel>
+        </DockPanel>
+        <!-- The normal application: This must come last because the last item always fills. -->
+        <DockPanel Background="Transparent" DockPanel.Dock="Top" IsVisible="{Binding !IsUpdating}">
             <SplitView IsPaneOpen="{Binding IsMenuOpen}"
                        CompactPaneLength="55"
                        OpenPaneLength="150"