From 942f645995e7be2fe2e77d30d51623512659353e Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@users.noreply.github.com>
Date: Mon, 4 Nov 2024 11:52:12 +0100
Subject: [PATCH] Added basic date/time picker automation peers.

---
 .../Peers/DatePickerAutomationPeer.cs         | 25 +++++++++++++++++++
 .../Peers/TimePickerAutomationPeer.cs         | 25 +++++++++++++++++++
 .../DateTimePickers/DatePicker.cs             |  5 +++-
 .../DateTimePickers/TimePicker.cs             |  3 +++
 4 files changed, 57 insertions(+), 1 deletion(-)
 create mode 100644 src/Avalonia.Controls/Automation/Peers/DatePickerAutomationPeer.cs
 create mode 100644 src/Avalonia.Controls/Automation/Peers/TimePickerAutomationPeer.cs

diff --git a/src/Avalonia.Controls/Automation/Peers/DatePickerAutomationPeer.cs b/src/Avalonia.Controls/Automation/Peers/DatePickerAutomationPeer.cs
new file mode 100644
index 00000000000..9492f5cf743
--- /dev/null
+++ b/src/Avalonia.Controls/Automation/Peers/DatePickerAutomationPeer.cs
@@ -0,0 +1,25 @@
+using System;
+using Avalonia.Automation.Provider;
+using Avalonia.Controls;
+
+namespace Avalonia.Automation.Peers;
+
+public class DatePickerAutomationPeer : ControlAutomationPeer, IValueProvider
+{
+    public DatePickerAutomationPeer(DatePicker owner)
+        : base(owner)
+    {
+    }
+
+    public bool IsReadOnly => false;
+    public new DatePicker Owner => (DatePicker)base.Owner;
+    public string? Value => Owner.SelectedDate?.ToString();
+
+    public void SetValue(string? value)
+    {
+        if (DateTimeOffset.TryParse(value, out var result))
+            Owner.SelectedDate = result;
+    }
+
+    protected override AutomationControlType GetAutomationControlTypeCore() => AutomationControlType.Custom;
+}
diff --git a/src/Avalonia.Controls/Automation/Peers/TimePickerAutomationPeer.cs b/src/Avalonia.Controls/Automation/Peers/TimePickerAutomationPeer.cs
new file mode 100644
index 00000000000..e9045cc208b
--- /dev/null
+++ b/src/Avalonia.Controls/Automation/Peers/TimePickerAutomationPeer.cs
@@ -0,0 +1,25 @@
+using System;
+using Avalonia.Automation.Provider;
+using Avalonia.Controls;
+
+namespace Avalonia.Automation.Peers;
+
+public class TimePickerAutomationPeer : ControlAutomationPeer, IValueProvider
+{
+    public TimePickerAutomationPeer(TimePicker owner)
+        : base(owner)
+    {
+    }
+
+    public bool IsReadOnly => false;
+    public new TimePicker Owner => (TimePicker)base.Owner;
+    public string? Value => Owner.SelectedTime?.ToString();
+
+    public void SetValue(string? value)
+    {
+        if (TimeSpan.TryParse(value, out var result))
+            Owner.SelectedTime = result;
+    }
+
+    protected override AutomationControlType GetAutomationControlTypeCore() => AutomationControlType.Custom;
+}
diff --git a/src/Avalonia.Controls/DateTimePickers/DatePicker.cs b/src/Avalonia.Controls/DateTimePickers/DatePicker.cs
index 212cb64b13d..837d8ec9a30 100644
--- a/src/Avalonia.Controls/DateTimePickers/DatePicker.cs
+++ b/src/Avalonia.Controls/DateTimePickers/DatePicker.cs
@@ -1,4 +1,5 @@
-using Avalonia.Controls.Metadata;
+using Avalonia.Automation.Peers;
+using Avalonia.Controls.Metadata;
 using Avalonia.Controls.Primitives;
 using Avalonia.Controls.Shapes;
 using Avalonia.Data;
@@ -267,6 +268,8 @@ protected override void OnApplyTemplate(TemplateAppliedEventArgs e)
             }
         }
 
+        protected override AutomationPeer OnCreateAutomationPeer() => new DatePickerAutomationPeer(this);
+
         protected override void OnPropertyChanged(AvaloniaPropertyChangedEventArgs change)
         {
             base.OnPropertyChanged(change);
diff --git a/src/Avalonia.Controls/DateTimePickers/TimePicker.cs b/src/Avalonia.Controls/DateTimePickers/TimePicker.cs
index d1452985635..5ad110eb693 100644
--- a/src/Avalonia.Controls/DateTimePickers/TimePicker.cs
+++ b/src/Avalonia.Controls/DateTimePickers/TimePicker.cs
@@ -6,6 +6,7 @@
 using System;
 using System.Globalization;
 using Avalonia.Controls.Utils;
+using Avalonia.Automation.Peers;
 
 namespace Avalonia.Controls
 {
@@ -330,6 +331,8 @@ private void SetSelectedTimeText()
             }
         }
 
+        protected override AutomationPeer OnCreateAutomationPeer() => new TimePickerAutomationPeer(this);
+
         protected virtual void OnSelectedTimeChanged(TimeSpan? oldTime, TimeSpan? newTime)
         {
             SelectedTimeChanged?.Invoke(this, new TimePickerSelectedValueChangedEventArgs(oldTime, newTime));