feat: Implement TextBoxAutomationPeer

src/Uno.UI/UI/Xaml/Automation/Peers/TextBoxAutomationPeer.cs

@@ -1,31 +1,35 @@
-using System.Collections.Generic;
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License. See LICENSE in the project root for license information.
+// MUX Reference TextBoxAutomationPeer_Partial.cpp, tag winui3/release/1.4.2
+using System.Collections.Generic;
 using Microsoft.UI.Xaml.Controls;
 
-namespace Microsoft.UI.Xaml.Automation.Peers
+namespace Microsoft.UI.Xaml.Automation.Peers;
+
+/// <summary>
+/// Exposes TextBox types to Microsoft UI Automation.
+/// </summary>
+public partial class TextBoxAutomationPeer : FrameworkElementAutomationPeer
 {
-	public partial class TextBoxAutomationPeer : FrameworkElementAutomationPeer
+	public TextBoxAutomationPeer(TextBox owner) : base(owner)
 	{
-		public TextBoxAutomationPeer(TextBox owner) : base(owner)
-		{
-		}
+	}
 
-		protected override string GetClassNameCore()
-		{
-			return "RichEditBox";
-		}
+	protected override string GetClassNameCore() => nameof(TextBox);
 
-		protected override AutomationControlType GetAutomationControlTypeCore()
-		{
-			return AutomationControlType.Edit;
-		}
+	protected override AutomationControlType GetAutomationControlTypeCore()
+		=> AutomationControlType.Edit;
 
-		protected override bool IsControlElementCore()
+	protected override IEnumerable<AutomationPeer> GetDescribedByCore()
+	{
+		if (Owner is TextBox owner)
 		{
-			return true;
+			//UNO TODO Implement TextBoxPlaceholderTextHelper
+			//IFC_RETURN(TextBoxPlaceholderTextHelper::SetupPlaceholderTextBlockDescribedBy(spOwner));
+
+			return base.GetDescribedByCore();
 		}
 
-		// TODO: Add support for PlaceholderText and Label
-		// Accessibility priority: Name > LabeledBy > Header > PlaceholderText
-		// LabeledBy: Header, DescribedBy: PlaceholderText
+		return [];
 	}
 }