feat: FileSavePicker wrapper. Closes #13

- Added wrapper to set the Window that owns the picker
- Added wrapper for FileSavePicker to allow saving a single file

VaraniumSharp.WinUI.sln.DotSettings

@@ -6,5 +6,6 @@
 	<s:Double x:Key="/Default/Environment/InjectedLayers/InjectedLayerCustomization/=File90684B96B34B974D8CCBEBB97FAE1F59/RelativePriority/@EntryValue">1</s:Double>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=flyout/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=Fody/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=hwnd/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=Readmodel/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=Varanium/@EntryIndexedValue">True</s:Boolean></wpf:ResourceDictionary>

VaraniumSharp.WinUI/Interfaces/Pickers/IOwnerWindow.cs

@@ -0,0 +1,20 @@
+using Microsoft.UI.Xaml;
+
+namespace VaraniumSharp.WinUI.Interfaces.Pickers
+{
+    /// <summary>
+    /// Assist with setting the main <see cref="Window"/> that Pickers will be associated with.
+    /// When using the <see cref="WinUI.TabWindow.TabWindow"/> this class will be set up automatically.
+    /// </summary>
+    public interface IOwnerWindow
+    {
+        #region Properties
+
+        /// <summary>
+        /// The main parent Window that the Pickers should be assigned to
+        /// </summary>
+        Window ParentWindow { get; set; }
+
+        #endregion
+    }
+}

VaraniumSharp.WinUI/Interfaces/Pickers/IPickerWrapper.cs

@@ -0,0 +1,24 @@
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using Windows.Storage;
+
+namespace VaraniumSharp.WinUI.Interfaces.Pickers
+{
+    /// <summary>
+    /// Wrapper for Pickers
+    /// </summary>
+    public interface IPickerWrapper
+    {
+        #region Public Methods
+
+        /// <summary>
+        /// Pick a single file with a specific type
+        /// </summary>
+        /// <param name="fileTypes">Dictionary containing file type name and extensions</param>
+        /// <param name="suggestedFilename">Suggested name for the file. Pass null or empty to leave empty</param>
+        /// <returns>StorageFile from the pick</returns>
+        Task<StorageFile> PickSaveFileAsync(KeyValuePair<string, List<string>> fileTypes, string? suggestedFilename);
+
+        #endregion
+    }
+}

VaraniumSharp.WinUI/Pickers/OwnerWindow.cs

@@ -0,0 +1,21 @@
+using Microsoft.UI.Xaml;
+using VaraniumSharp.Attributes;
+using VaraniumSharp.Enumerations;
+using VaraniumSharp.WinUI.Interfaces.Pickers;
+
+namespace VaraniumSharp.WinUI.Pickers
+{
+    /// <summary>
+    /// Assist with setting the main <see cref="Window"/> that Pickers will be associated with
+    /// </summary>
+    [AutomaticContainerRegistration(typeof(IOwnerWindow), ServiceReuse.Singleton)]
+    public class OwnerWindow : IOwnerWindow
+    {
+        #region Properties
+
+        /// <inheritdoc />
+        public Window ParentWindow { get; set; }
+
+        #endregion
+    }
+}

VaraniumSharp.WinUI/Pickers/PickerWrapper.cs

@@ -0,0 +1,60 @@
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using Windows.Storage;
+using Windows.Storage.Pickers;
+using VaraniumSharp.Attributes;
+using VaraniumSharp.WinUI.Interfaces.Pickers;
+
+namespace VaraniumSharp.WinUI.Pickers
+{
+    /// <summary>
+    /// Wrapper class for Pickers
+    /// </summary>
+    [AutomaticContainerRegistration(typeof(IPickerWrapper))]
+    public class PickerWrapper : IPickerWrapper
+    {
+        #region Constructor
+
+        /// <summary>
+        /// DI Constructor
+        /// </summary>
+        public PickerWrapper(IOwnerWindow ownerWindow)
+        {
+            _ownerWindow = ownerWindow;
+        }
+
+        #endregion
+
+        #region Public Methods
+
+        /// <inheritdoc />
+        public async Task<StorageFile> PickSaveFileAsync(KeyValuePair<string, List<string>> fileTypes, string? suggestedFilename)
+        {
+            var savePicker = new FileSavePicker();
+            savePicker.FileTypeChoices.Add(fileTypes.Key, fileTypes.Value);
+
+            if (!string.IsNullOrEmpty(suggestedFilename))
+            {
+                savePicker.SuggestedFileName = suggestedFilename;
+            }
+
+            // See: https://github.com/microsoft/WindowsAppSDK/issues/467#issuecomment-901220636
+            var hwnd = WinRT.Interop.WindowNative.GetWindowHandle(_ownerWindow.ParentWindow);
+            WinRT.Interop.InitializeWithWindow.Initialize(savePicker, hwnd);
+
+            return await savePicker.PickSaveFileAsync();
+        }
+
+        #endregion
+
+        #region Variables
+
+        /// <summary>
+        /// OwnerWindow instance
+        /// </summary>
+        private readonly IOwnerWindow _ownerWindow;
+
+        #endregion
+    }
+}

VaraniumSharp.WinUI/TabWindow/TabWindow.xaml.cs

@@ -3,6 +3,7 @@
 using VaraniumSharp.Attributes;
 using VaraniumSharp.Enumerations;
 using VaraniumSharp.WinUI.Interfaces.CustomPaneBase;
+using VaraniumSharp.WinUI.Interfaces.Pickers;
 using VaraniumSharp.WinUI.Interfaces.TabWindow;
 
 namespace VaraniumSharp.WinUI.TabWindow
@@ -18,7 +19,7 @@ public sealed partial class TabWindow
         /// <summary>
         /// DI Constructor
         /// </summary>
-        public TabWindow(ITabWindowContext tabWindowContext, ICustomLayoutEventRouter customLayoutEventRouter)
+        public TabWindow(ITabWindowContext tabWindowContext, ICustomLayoutEventRouter customLayoutEventRouter, IOwnerWindow ownerWindow)
         {
             InitializeComponent();
             ExtendsContentIntoTitleBar = true;
@@ -28,6 +29,7 @@ public TabWindow(ITabWindowContext tabWindowContext, ICustomLayoutEventRouter cu
             LayoutPane.Children.Add(tabWindowContext.ContentPaneManager.BasePane as UIElement);
             _customLayoutEventRouter = customLayoutEventRouter;
             _customLayoutEventRouter.ControlDisplayChanged += CustomLayoutEventRouterOnControlDisplayChanged;
+            ownerWindow.ParentWindow = this;
         }
 
         #endregion

VaraniumSharp.WinUI/VaraniumSharp.WinUI.csproj

@@ -57,6 +57,7 @@
   <ItemGroup>
     <Folder Include="Interfaces\SettingPane\" />
     <Folder Include="Interfaces\VerticalPane\" />
+    <Folder Include="Pickers\" />
   </ItemGroup>
 
   <ItemGroup>