From f536856f5b453eee19197f34c8da9db42335f50a Mon Sep 17 00:00:00 2001
From: Dominik Titl <78549750+morning4coffe-dev@users.noreply.github.com>
Date: Sat, 30 Mar 2024 11:08:56 +0100
Subject: [PATCH] feat: Implement `FlipViewAutomationPeer`

---
 .../Peers/FlipViewAutomationPeer.cs           | 66 +++++++++++++++++++
 .../UI/Xaml/Controls/FlipView/FlipView.cs     |  6 ++
 2 files changed, 72 insertions(+)
 create mode 100644 src/Uno.UI/UI/Xaml/Automation/Peers/FlipViewAutomationPeer.cs

diff --git a/src/Uno.UI/UI/Xaml/Automation/Peers/FlipViewAutomationPeer.cs b/src/Uno.UI/UI/Xaml/Automation/Peers/FlipViewAutomationPeer.cs
new file mode 100644
index 000000000000..b53c047bfe83
--- /dev/null
+++ b/src/Uno.UI/UI/Xaml/Automation/Peers/FlipViewAutomationPeer.cs
@@ -0,0 +1,66 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License. See LICENSE in the project root for license information.
+// MUX Reference FlipViewAutomationPeer_Partial.cpp, tag winui3/release/1.5-stable
+
+using System.Collections.Generic;
+
+namespace Microsoft.UI.Xaml.Automation.Peers;
+
+/// <summary>
+/// Exposes FlipView types to Microsoft UI Automation.
+/// </summary>
+public partial class FlipViewAutomationPeer : SelectorAutomationPeer
+{
+	public FlipViewAutomationPeer(Controls.FlipView owner) : base(owner)
+	{
+
+	}
+
+	protected override IList<AutomationPeer> GetChildrenCore()
+	{
+		var children = base.GetChildrenCore();
+
+		if ((Owner as Controls.FlipView).SelectedItem is { } selectedItem)
+		{
+			var itemPeer = CreateItemAutomationPeer(selectedItem);
+
+			if (itemPeer is { })
+			{
+				var itemPeerAsAP = itemPeer as AutomationPeer;
+				children.Add(itemPeerAsAP);
+
+				if (children is { })
+				{
+					(var previousButton, var nextButton) = (Owner as Controls.FlipView).GetPreviousAndNextButtons();
+
+					if (nextButton is { })
+					{
+						var nextButtonAP = nextButton.GetOrCreateAutomationPeer();
+
+						if (nextButtonAP is { })
+						{
+							children.Insert(0, nextButtonAP);
+						}
+					}
+					if (previousButton is { })
+					{
+						var previousButtonAP = previousButton.GetOrCreateAutomationPeer();
+
+						if (previousButtonAP is { })
+						{
+							children.Insert(0, previousButtonAP);
+						}
+					}
+				}
+			}
+		}
+
+		return children;
+	}
+
+	protected override string GetClassNameCore() => nameof(Controls.FlipView);
+
+	protected override AutomationControlType GetAutomationControlTypeCore()
+		=> AutomationControlType.List;//UNO TODO: AutomationControlType.FlipView;
+
+}
diff --git a/src/Uno.UI/UI/Xaml/Controls/FlipView/FlipView.cs b/src/Uno.UI/UI/Xaml/Controls/FlipView/FlipView.cs
index 83e32d717f3f..451892588b52 100644
--- a/src/Uno.UI/UI/Xaml/Controls/FlipView/FlipView.cs
+++ b/src/Uno.UI/UI/Xaml/Controls/FlipView/FlipView.cs
@@ -30,5 +30,11 @@ public bool UseTouchAnimationsForAllNavigation
 			DependencyProperty.Register("UseTouchAnimationsForAllNavigation", typeof(bool), typeof(FlipView), new FrameworkPropertyMetadata(true));
 
 		partial void InitializePartial();
+
+		internal (ButtonBase previousButton, ButtonBase nextButton) GetPreviousAndNextButtons()
+		{
+			// UNO TODO: Implement GetPreviousAndNextButtons on FlipView
+			return (null, null);
+		}
 	}
 }