Code Quality: Move App.TemplateSelectors to App.Data.TemplateSelectors (#12566)

Author: 0x5bfa

src/Files.App/TemplateSelectors/BaseTemplateSelector.cs renamed to src/Files.App/Data/TemplateSelectors/BaseTemplateSelector.cs

@@ -4,7 +4,7 @@
 using Microsoft.UI.Xaml;
 using Microsoft.UI.Xaml.Controls;
 
-namespace Files.App.TemplateSelectors
+namespace Files.App.Data.TemplateSelectors
 {
 	internal abstract class BaseTemplateSelector<TItem> : DataTemplateSelector
 	{

src/Files.App/TemplateSelectors/FileSystemDialogItemSelector.cs renamed to src/Files.App/Data/TemplateSelectors/FileSystemDialogItemSelector.cs

@@ -4,7 +4,7 @@
 using Files.Backend.ViewModels.Dialogs.FileSystemDialog;
 using Microsoft.UI.Xaml;
 
-namespace Files.App.TemplateSelectors
+namespace Files.App.Data.TemplateSelectors
 {
 	internal sealed class FileSystemDialogItemSelector : BaseTemplateSelector<BaseFileSystemDialogItemViewModel>
 	{

src/Files.App/Data/TemplateSelectors/PathBreadcrumbItemSelector.cs

@@ -0,0 +1,35 @@
+// Copyright (c) 2023 Files Community
+// Licensed under the MIT License. See the LICENSE.
+
+using Microsoft.UI.Xaml;
+using Microsoft.UI.Xaml.Controls;
+
+namespace Files.App.Data.TemplateSelectors
+{
+	/// <summary>
+	/// Provides template selector for Path Breadcrumb template items.
+	/// </summary>
+	internal sealed class PathBreadcrumbItemSelector : DataTemplateSelector
+	{
+		public DataTemplate? ParentItems { get; set; }
+
+		public DataTemplate? CurrentItem { get; set; }
+
+		protected override DataTemplate SelectTemplateCore(object item, DependencyObject container)
+		{
+			var itemsControl = ItemsControl.ItemsControlFromItemContainer(container);
+
+			if (itemsControl.ItemsSource is ObservableCollection<PathBoxItem> items)
+			{
+				return
+					itemsControl.IndexFromContainer(container) == items.Count - 1
+						? CurrentItem!
+						: ParentItems!;
+			}
+			else
+			{
+				throw new ArgumentException($"Type of {nameof(itemsControl.ItemsSource)} doesn't match ObservableCollection<{nameof(PathBoxItem)}>");
+			}
+		}
+	}
+}

src/Files.App/Dialogs/FilesystemOperationDialog.xaml

@@ -7,7 +7,7 @@
 	xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
 	xmlns:helpers="using:Files.App.Helpers"
 	xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-	xmlns:ts="using:Files.App.TemplateSelectors"
+	xmlns:templateselectors="using:Files.App.Data.TemplateSelectors"
 	xmlns:tvc="using:CommunityToolkit.WinUI.UI.Converters"
 	xmlns:vm="using:Files.Backend.ViewModels.Dialogs.FileSystemDialog"
 	x:Name="RootDialog"
@@ -213,7 +213,7 @@
 				SelectionMode="None">
 
 				<ListView.ItemTemplateSelector>
-					<ts:FileSystemDialogItemSelector ConflictItemDataTemplate="{StaticResource ConflictItemDataTemplate}" DefaultItemDataTemplate="{StaticResource DefaultItemDataTemplate}" />
+					<templateselectors:FileSystemDialogItemSelector ConflictItemDataTemplate="{StaticResource ConflictItemDataTemplate}" DefaultItemDataTemplate="{StaticResource DefaultItemDataTemplate}" />
 				</ListView.ItemTemplateSelector>
 
 				<ListView.ItemsPanel>

src/Files.App/Helpers/ItemsDataTemplateSelector.cs

@@ -7,8 +7,8 @@
 	xmlns:Interactivity="using:Microsoft.Xaml.Interactivity"
 	xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
 	xmlns:dataitem="using:Files.App.Data.Items"
-	xmlns:helpers="using:Files.App.Helpers"
 	xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+	xmlns:templateselectors="using:Files.App.Data.TemplateSelectors"
 	d:DesignHeight="300"
 	d:DesignWidth="400"
 	mc:Ignorable="d">
@@ -172,7 +172,7 @@
 		</ListView.ItemContainerTransitions>
 
 		<ListView.ItemTemplateSelector>
-			<helpers:ItemsDataTemplateSelector CurrentItem="{StaticResource CurrentItem}" ParentItems="{StaticResource ParentItems}" />
+			<templateselectors:PathBreadcrumbItemSelector CurrentItem="{StaticResource CurrentItem}" ParentItems="{StaticResource ParentItems}" />
 		</ListView.ItemTemplateSelector>
 
 	</ListView>