Add support for dragging recent files

Author: Lamparter

src/Files.App/UserControls/Widgets/RecentFilesWidget.xaml

@@ -37,6 +37,9 @@
 			x:Name="RecentFilesListView"
 			HorizontalAlignment="Stretch"
 			VerticalAlignment="Stretch"
+			AllowDrop="True"
+			CanDragItems="True"
+			DragItemsStarting="RecentFilesListView_DragItemsStarting"
 			IsItemClickEnabled="True"
 			IsRightTapEnabled="True"
 			ItemClick="RecentFilesListView_ItemClick"

src/Files.App/UserControls/Widgets/RecentFilesWidget.xaml.cs

@@ -3,6 +3,8 @@
 
 using Microsoft.UI.Xaml.Controls;
 using Microsoft.UI.Xaml.Input;
+using Windows.ApplicationModel.DataTransfer;
+using Windows.Storage;
 
 namespace Files.App.UserControls.Widgets
 {
@@ -30,5 +32,37 @@ private void RecentFilesListView_RightTapped(object sender, RightTappedRoutedEve
 		{
 			ViewModel.BuildItemContextMenu(e.OriginalSource, e);
 		}
+
+		private async void RecentFilesListView_DragItemsStarting(object sender, DragItemsStartingEventArgs e)
+		{
+			var items = e.Items.OfType<RecentItem>().ToList();
+			if (items.Count > 0)
+			{
+				var storageItems = new List<IStorageItem>();
+				foreach (var item in items)
+				{
+					try
+					{
+						var file = await StorageFile.GetFileFromPathAsync(item.Path);
+						if (file != null)
+							storageItems.Add(file);
+					}
+					catch
+					{
+						e.Cancel = true;
+					}
+				}
+
+				if (storageItems.Count > 0)
+				{
+					// Create a new data package and set the storage items
+					DataPackage dataPackage = new DataPackage();
+					dataPackage.SetStorageItems(storageItems);
+					e.Data.SetDataProvider(StandardDataFormats.StorageItems, request => request.SetData(storageItems));
+
+					e.Data.RequestedOperation = DataPackageOperation.Move | DataPackageOperation.Copy | DataPackageOperation.Link;
+				}
+			}
+		}
 	}
 }