From 6711b688db3f78c3f69eb56075a94848a86a4afa Mon Sep 17 00:00:00 2001
From: Vijay Anand E G <81947404+egvijayanand@users.noreply.github.com>
Date: Mon, 30 Sep 2024 23:45:50 +0530
Subject: [PATCH] Frame-based navigation and MVVM Toolkit temporary fix

---
 .../DateCalculator.Maui.csproj                |  1 +
 .../DateCalculator.WinUI/App.xaml.cs          | 31 ++++++++++++++++---
 .../DateCalculator.WinUI.csproj               |  1 +
 .../DateCalculator.WinUI/Imports.cs           |  1 +
 .../Views/{MainWindow.xaml => MainPage.xaml}  | 10 +++---
 .../{MainWindow.xaml.cs => MainPage.xaml.cs}  |  4 +--
 .../DateCalculator.Maui.csproj                |  1 +
 7 files changed, 37 insertions(+), 12 deletions(-)
 rename src/NET_8/DateCalculator/DateCalculator.WinUI/Views/{MainWindow.xaml => MainPage.xaml} (98%)
 rename src/NET_8/DateCalculator/DateCalculator.WinUI/Views/{MainWindow.xaml.cs => MainPage.xaml.cs} (74%)

diff --git a/src/NET_8/DateCalculator/DateCalculator.Maui/DateCalculator.Maui.csproj b/src/NET_8/DateCalculator/DateCalculator.Maui/DateCalculator.Maui.csproj
index 07a63d6..8da6446 100644
--- a/src/NET_8/DateCalculator/DateCalculator.Maui/DateCalculator.Maui.csproj
+++ b/src/NET_8/DateCalculator/DateCalculator.Maui/DateCalculator.Maui.csproj
@@ -19,6 +19,7 @@
         <ImplicitUsings>enable</ImplicitUsings>
         <RootNamespace>DateCalculator</RootNamespace>
         <WindowsPackageType>None</WindowsPackageType>
+        <WindowsSdkPackageVersion>10.0.19041.38</WindowsSdkPackageVersion>
 
         <!-- Display name -->
         <ApplicationTitle>DateCalculator</ApplicationTitle>
diff --git a/src/NET_8/DateCalculator/DateCalculator.WinUI/App.xaml.cs b/src/NET_8/DateCalculator/DateCalculator.WinUI/App.xaml.cs
index 6082861..3d004cc 100644
--- a/src/NET_8/DateCalculator/DateCalculator.WinUI/App.xaml.cs
+++ b/src/NET_8/DateCalculator/DateCalculator.WinUI/App.xaml.cs
@@ -1,3 +1,5 @@
+using Microsoft.UI.Xaml.Navigation;
+
 namespace DateCalculator.WinUI
 {
     /// <summary>
@@ -5,6 +7,8 @@ namespace DateCalculator.WinUI
     /// </summary>
     public partial class App : Application
     {
+        private Window window = Window.Current;
+
         /// <summary>
         /// Initializes the singleton application object.  This is the first line of authored code
         /// executed, and as such is the logical equivalent of main() or WinMain().
@@ -18,13 +22,30 @@ public App()
         /// Invoked when the application is launched normally by the end user.  Other entry points
         /// will be used such as when the application is launched to open a specific file.
         /// </summary>
-        /// <param name="args">Details about the launch request and process.</param>
-        protected override void OnLaunched(LaunchActivatedEventArgs args)
+        /// <param name="e">Details about the launch request and process.</param>
+        protected override void OnLaunched(LaunchActivatedEventArgs e)
         {
-            m_window = new MainWindow();
-            m_window?.Activate();
+            window ??= new Window();
+
+            if (window.Content is not Frame rootFrame)
+            {
+                rootFrame = new Frame();
+                rootFrame.NavigationFailed += OnNavigationFailed;
+                window.Content = rootFrame;
+            }
+
+            _ = rootFrame.Navigate(typeof(MainPage), e.Arguments);
+            window.Activate();
         }
 
-        private Window? m_window;
+        /// <summary>
+        /// Invoked when Navigation to a certain page fails
+        /// </summary>
+        /// <param name="sender">The Frame which failed navigation</param>
+        /// <param name="e">Details about the navigation failure</param>
+        void OnNavigationFailed(object sender, NavigationFailedEventArgs e)
+        {
+            throw new Exception("Failed to load Page " + e.SourcePageType.FullName);
+        }
     }
 }
diff --git a/src/NET_8/DateCalculator/DateCalculator.WinUI/DateCalculator.WinUI.csproj b/src/NET_8/DateCalculator/DateCalculator.WinUI/DateCalculator.WinUI.csproj
index df5b9a2..4b3539e 100644
--- a/src/NET_8/DateCalculator/DateCalculator.WinUI/DateCalculator.WinUI.csproj
+++ b/src/NET_8/DateCalculator/DateCalculator.WinUI/DateCalculator.WinUI.csproj
@@ -9,6 +9,7 @@
         <UseWinUI>true</UseWinUI>
         <EnableMsixTooling>true</EnableMsixTooling>
         <WindowsPackageType>None</WindowsPackageType>
+        <WindowsSdkPackageVersion>10.0.19041.38</WindowsSdkPackageVersion>
 
         <!-- Project Options -->
         <Nullable>enable</Nullable>
diff --git a/src/NET_8/DateCalculator/DateCalculator.WinUI/Imports.cs b/src/NET_8/DateCalculator/DateCalculator.WinUI/Imports.cs
index 30460a6..74de3f1 100644
--- a/src/NET_8/DateCalculator/DateCalculator.WinUI/Imports.cs
+++ b/src/NET_8/DateCalculator/DateCalculator.WinUI/Imports.cs
@@ -2,4 +2,5 @@
 global using DateCalculator.WinUI.Views;
 
 global using Microsoft.UI.Xaml;
+global using Microsoft.UI.Xaml.Controls;
 global using Microsoft.UI.Xaml.Data;
diff --git a/src/NET_8/DateCalculator/DateCalculator.WinUI/Views/MainWindow.xaml b/src/NET_8/DateCalculator/DateCalculator.WinUI/Views/MainPage.xaml
similarity index 98%
rename from src/NET_8/DateCalculator/DateCalculator.WinUI/Views/MainWindow.xaml
rename to src/NET_8/DateCalculator/DateCalculator.WinUI/Views/MainPage.xaml
index b9d3cc9..3367d66 100644
--- a/src/NET_8/DateCalculator/DateCalculator.WinUI/Views/MainWindow.xaml
+++ b/src/NET_8/DateCalculator/DateCalculator.WinUI/Views/MainPage.xaml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8" ?>
-<Window
-    x:Class="DateCalculator.WinUI.Views.MainWindow"
+<Page
+    x:Class="DateCalculator.WinUI.Views.MainPage"
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
     xmlns:conv="using:DateCalculator.WinUI.Converters"
@@ -9,7 +9,7 @@
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
     xmlns:vm="using:DateCalculator.ViewModels"
     mc:Ignorable="d">
-    <Window.Content>
+    <Page.Content>
         <StackPanel
             x:Name="content"
             Margin="30">
@@ -115,5 +115,5 @@
                 <TextBlock Text="{Binding DiffInDays}" />
             </StackPanel>
         </StackPanel>
-    </Window.Content>
-</Window>
+    </Page.Content>
+</Page>
diff --git a/src/NET_8/DateCalculator/DateCalculator.WinUI/Views/MainWindow.xaml.cs b/src/NET_8/DateCalculator/DateCalculator.WinUI/Views/MainPage.xaml.cs
similarity index 74%
rename from src/NET_8/DateCalculator/DateCalculator.WinUI/Views/MainWindow.xaml.cs
rename to src/NET_8/DateCalculator/DateCalculator.WinUI/Views/MainPage.xaml.cs
index 33e762e..6610bc7 100644
--- a/src/NET_8/DateCalculator/DateCalculator.WinUI/Views/MainWindow.xaml.cs
+++ b/src/NET_8/DateCalculator/DateCalculator.WinUI/Views/MainPage.xaml.cs
@@ -3,9 +3,9 @@ namespace DateCalculator.WinUI.Views
     /// <summary>
     /// An empty window that can be used on its own or navigated to within a Frame.
     /// </summary>
-    public sealed partial class MainWindow : Window
+    public sealed partial class MainPage : Page
     {
-        public MainWindow()
+        public MainPage()
         {
             this.InitializeComponent();
         }
diff --git a/src/NET_8/UnifiedDateCalculator/DateCalculator.Maui/DateCalculator.Maui.csproj b/src/NET_8/UnifiedDateCalculator/DateCalculator.Maui/DateCalculator.Maui.csproj
index 2661209..43ede41 100644
--- a/src/NET_8/UnifiedDateCalculator/DateCalculator.Maui/DateCalculator.Maui.csproj
+++ b/src/NET_8/UnifiedDateCalculator/DateCalculator.Maui/DateCalculator.Maui.csproj
@@ -18,6 +18,7 @@
         <ImplicitUsings>enable</ImplicitUsings>
         <RootNamespace>DateCalculator.Maui</RootNamespace>
         <WindowsPackageType>None</WindowsPackageType>
+        <WindowsSdkPackageVersion>10.0.19041.38</WindowsSdkPackageVersion>
 
         <!-- Display name -->
         <ApplicationTitle>DateCalculator.Maui</ApplicationTitle>