From 99eaa8960f3f132473adece74a536ab5c61d2a01 Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@gmail.com>
Date: Sat, 27 May 2023 10:42:54 +0200
Subject: [PATCH] Implement accessibilityPlaceholderValue.

---
 native/Avalonia.Native/src/OSX/automation.mm | 7 +++++++
 src/Avalonia.Native/AvnAutomationPeer.cs     | 2 ++
 src/Avalonia.Native/avn.idl                  | 1 +
 3 files changed, 10 insertions(+)

diff --git a/native/Avalonia.Native/src/OSX/automation.mm b/native/Avalonia.Native/src/OSX/automation.mm
index 04293e8721..ae0e7314ea 100644
--- a/native/Avalonia.Native/src/OSX/automation.mm
+++ b/native/Avalonia.Native/src/OSX/automation.mm
@@ -438,6 +438,13 @@ private:
     return [super accessibilityNumberOfCharacters];
 }
 
+- (NSString *)accessibilityPlaceholderValue
+{
+    if (_peer->IsTextProvider())
+        return GetNSStringAndRelease(_peer->TextProvider_GetPlaceholderText());
+    return [super accessibilityPlaceholderValue];
+}
+
 - (NSRange)accessibilityRangeForLine:(NSInteger)line
 {
     if (_peer->IsTextProvider())
diff --git a/src/Avalonia.Native/AvnAutomationPeer.cs b/src/Avalonia.Native/AvnAutomationPeer.cs
index 7f5d8717e2..fde115212d 100644
--- a/src/Avalonia.Native/AvnAutomationPeer.cs
+++ b/src/Avalonia.Native/AvnAutomationPeer.cs
@@ -160,6 +160,8 @@ namespace Avalonia.Native
             *start = range.Start;
             *length = range.Length;
         }
+
+        public IAvnString TextProvider_GetPlaceholderText() => ((ITextProvider)_inner).PlaceholderText.ToAvnString();
         
         public IAvnString TextProvider_GetSelectedText()
         {
diff --git a/src/Avalonia.Native/avn.idl b/src/Avalonia.Native/avn.idl
index 98aa10b27f..760059f237 100644
--- a/src/Avalonia.Native/avn.idl
+++ b/src/Avalonia.Native/avn.idl
@@ -919,6 +919,7 @@ interface IAvnAutomationPeer : IUnknown
      int TextProvider_GetCaretLineNumber();
      int TextProvider_GetLineForIndex(int index);
      void TextProvider_GetLineRange(int lineIndex, int* start, int* length);
+     IAvnString* TextProvider_GetPlaceholderText();
      IAvnString* TextProvider_GetText(int start, int length);
      int TextProvider_GetTextLength();
      IAvnString* TextProvider_GetSelectedText();