Dynamically resize supporter grid columns

+ fix bootstrapper bug from yesterday

Bloxstrap/Bootstrapper.cs

@@ -629,6 +629,9 @@ namespace Bloxstrap
 
             if (Directory.Exists(AppData.Directory))
             {
+                if (Directory.Exists(AppData.OldDirectory))
+                    Directory.Delete(AppData.OldDirectory, true);
+
                 try
                 {
                     // test to see if any files are in use

Bloxstrap/UI/Elements/About/Pages/SupportersPage.xaml

@@ -10,6 +10,7 @@
       xmlns:resources="clr-namespace:Bloxstrap.Resources"
       mc:Ignorable="d"
       d:DesignHeight="1500" d:DesignWidth="800"
+      SizeChanged="UiPage_SizeChanged"
       Title="AboutPage"
       Scrollable="True">
     <StackPanel Margin="0,0,14,14">
@@ -93,7 +94,7 @@
                 </ListView.ItemTemplate>
                 <ListView.ItemsPanel>
                     <ItemsPanelTemplate>
-                        <UniformGrid Columns="{Binding SupporterData.Monthly.Columns}" Margin="-4" />
+                        <UniformGrid Columns="{Binding Columns}" Margin="-4" />
                     </ItemsPanelTemplate>
                 </ListView.ItemsPanel>
             </ListView>
@@ -122,7 +123,7 @@
                 </ListView.ItemTemplate>
                 <ListView.ItemsPanel>
                     <ItemsPanelTemplate>
-                        <UniformGrid Columns="{Binding SupporterData.OneOff.Columns}" Margin="-4" />
+                        <UniformGrid Columns="{Binding Columns}" Margin="-4" />
                     </ItemsPanelTemplate>
                 </ListView.ItemsPanel>
             </ListView>

Bloxstrap/UI/Elements/About/Pages/SupportersPage.xaml.cs

@@ -1,4 +1,6 @@
-using Bloxstrap.UI.ViewModels.About;
+using System.Windows;
+
+using Bloxstrap.UI.ViewModels.About;
 
 namespace Bloxstrap.UI.Elements.About.Pages
 {
@@ -7,10 +9,15 @@ namespace Bloxstrap.UI.Elements.About.Pages
     /// </summary>
     public partial class SupportersPage
     {
+        private readonly SupportersViewModel _viewModel = new();
+
         public SupportersPage()
         {
-            DataContext = new SupportersViewModel();
+            DataContext = _viewModel;
             InitializeComponent();
         }
+
+        private void UiPage_SizeChanged(object sender, SizeChangedEventArgs e)
+            => _viewModel.WindowResizeEvent?.Invoke(sender, e);
     }
 }

Bloxstrap/UI/ViewModels/About/SupportersViewModel.cs

@@ -1,4 +1,6 @@
-namespace Bloxstrap.UI.ViewModels.About
+using System.Windows;
+
+namespace Bloxstrap.UI.ViewModels.About
 {
     public class SupportersViewModel : NotifyPropertyChangedViewModel
     {
@@ -8,12 +10,32 @@
 
         public string LoadError { get; set; } = "";
 
+        public int Columns { get; set; } = 3;
+
+        public SizeChangedEventHandler? WindowResizeEvent;
+
         public SupportersViewModel()
         {
+            WindowResizeEvent += OnWindowResize;
+
             // this will cause momentary freezes only when ran under the debugger
             LoadSupporterData();
         }
 
+        private void OnWindowResize(object sender, SizeChangedEventArgs e)
+        {
+            if (!e.WidthChanged)
+                return;
+
+            int newCols = (int)Math.Floor(e.NewSize.Width / 200);
+
+            if (Columns == newCols)
+                return;
+             
+            Columns = newCols;
+            OnPropertyChanged(nameof(Columns));
+        }
+
         public async void LoadSupporterData()
         {
             const string LOG_IDENT = "AboutViewModel::LoadSupporterData";