Fixed a crash when using the high contrast theme (#1011)

Author: VigneshVoid

Files/App.xaml

@@ -35,7 +35,18 @@
                             <SolidColorBrush x:Key="SystemControlPageBackgroundMediumAltMediumBrush" Color="#99000000" />
                         </ResourceDictionary>
                         <ResourceDictionary x:Key="HighContrast">
-                            <!--  This empty dictionary ensures that the default high contrast resources are used when the user turns on high contrast mode.  -->
+                            <SolidColorBrush x:Key="ApplicationPageBackgroundThemeBrush" Color="#191919" />
+                            <SolidColorBrush x:Key="UnmodifiedSystemPageColor" Color="Black" />
+                            <StaticResource x:Key="YourHomeCardBackgroundColor" ResourceKey="TextControlBackground" />
+                            <SolidColorBrush x:Key="YourHomeCardBorderColor" Color="White" />
+                            <SolidColorBrush x:Key="TabViewBackground" Color="Black" />
+                            <SolidColorBrush x:Key="TabViewItemHeaderBackgroundSelected" Color="#191919" />
+                            <SolidColorBrush x:Key="TabViewItemHeaderBackgroundPointerOver" Color="#80191919" />
+                            <SolidColorBrush x:Key="TabViewItemHeaderBackgroundPressed" Color="#191919" />
+                            <SolidColorBrush x:Key="CustomInputFieldBorderBrush" Color="#FF363636" />
+                            <SolidColorBrush x:Key="RibbonBackgroundColor" Color="#131313" />
+                            <StaticResource x:Key="NavigationViewTopPaneBackground" ResourceKey="RibbonBackgroundColor" />
+                            <SolidColorBrush x:Key="SystemControlPageBackgroundMediumAltMediumBrush" Color="#99000000" />
                         </ResourceDictionary>
                     </ResourceDictionary.ThemeDictionaries>
                 </ResourceDictionary>

Files/Views/Pages/Properties.xaml.cs

@@ -3,9 +3,12 @@
 using Files.Interacts;
 using GalaSoft.MvvmLight;
 using System;
+using System.Linq;
+using System.Threading.Tasks;
 using Windows.Foundation.Metadata;
 using Windows.Security.Cryptography.Core;
 using Windows.Storage;
+using Windows.Storage.Search;
 using Windows.UI;
 using Windows.UI.WindowManagement;
 using Windows.UI.Xaml;
@@ -58,16 +61,19 @@ private async void Properties_Loaded(object sender, RoutedEventArgs e)
                 if (selectedItem.PrimaryItemAttribute == StorageItemTypes.File)
                 {
                     selectedStorageItem = await StorageFile.GetFileFromPathAsync(selectedItem.ItemPath);
+                    ItemProperties.ItemSize = selectedItem.FileSize;
                 }
                 else if (selectedItem.PrimaryItemAttribute == StorageItemTypes.Folder)
                 {
-                    selectedStorageItem = await StorageFolder.GetFolderFromPathAsync(selectedItem.ItemPath);
+                    var storageFolder = await StorageFolder.GetFolderFromPathAsync(selectedItem.ItemPath);
+                    selectedStorageItem = storageFolder;
+                    GetFolderSize(storageFolder);
                 }
 
                 ItemProperties.ItemName = selectedItem.ItemName;
                 ItemProperties.ItemType = selectedItem.ItemType;
                 ItemProperties.ItemPath = selectedItem.ItemPath;
-                ItemProperties.ItemSize = selectedItem.FileSize;
+                
                 ItemProperties.LoadFileIcon = selectedItem.LoadFileIcon;
                 ItemProperties.LoadFolderGlyph = selectedItem.LoadFolderGlyph;
                 ItemProperties.LoadUnknownTypeGlyph = selectedItem.LoadUnknownTypeGlyph;
@@ -105,6 +111,7 @@ private async void Properties_Loaded(object sender, RoutedEventArgs e)
                     // GetFolderFromPathAsync cannot access recyclebin folder
                     // Currently a fake timestamp is used
                     ItemProperties.ItemCreatedTimestamp = ListedItem.GetFriendlyDate(parentDirectory.ItemDateModifiedReal);
+                    ItemProperties.ItemSize = parentDirectory.FileSize;
                 }
                 else
                 {
@@ -114,7 +121,6 @@ private async void Properties_Loaded(object sender, RoutedEventArgs e)
                 ItemProperties.ItemName = parentDirectory.ItemName;
                 ItemProperties.ItemType = parentDirectory.ItemType;
                 ItemProperties.ItemPath = parentDirectory.ItemPath;
-                ItemProperties.ItemSize = parentDirectory.FileSize;
                 ItemProperties.LoadFileIcon = false;
                 ItemProperties.LoadFolderGlyph = true;
                 ItemProperties.LoadUnknownTypeGlyph = false;
@@ -123,7 +129,14 @@ private async void Properties_Loaded(object sender, RoutedEventArgs e)
                 ItemProperties.ItemMD5HashProgressVisibility = Visibility.Collapsed;
             }
         }
-
+        private async void GetFolderSize(StorageFolder storageFolder)
+        {
+            var folders = storageFolder.CreateFileQuery(CommonFileQuery.OrderByName);
+            var fileSizeTasks = (await folders.GetFilesAsync()).Select(async file => (await file.GetBasicPropertiesAsync()).Size);
+            var sizes = await Task.WhenAll(fileSizeTasks);
+            var folderSize = sizes.Sum(singleSize => (long)singleSize);
+            ItemProperties.ItemSize = ByteSizeLib.ByteSize.FromBytes(folderSize).ToString();
+        }
         private void AppSettings_ThemeModeChanged(object sender, EventArgs e)
         {
             RequestedTheme = ThemeHelper.RootTheme;