From 1f9d6ed30405e70943ec0d97720968d2aa5a8283 Mon Sep 17 00:00:00 2001
From: chdo002 <1107661983@qq.com>
Date: Thu, 30 May 2024 14:51:47 +0800
Subject: [PATCH] Added optional scroll preferPosition to
 scrollController.scrollToIndex (#603)

---
 lib/src/widgets/chat.dart | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/src/widgets/chat.dart b/lib/src/widgets/chat.dart
index 2684ead5..fc6d5a6c 100644
--- a/lib/src/widgets/chat.dart
+++ b/lib/src/widgets/chat.dart
@@ -380,11 +380,12 @@ class ChatState extends State<Chat> {
     Duration? scrollDuration,
     bool withHighlight = false,
     Duration? highlightDuration,
+    AutoScrollPosition? preferPosition
   }) async {
     await _scrollController.scrollToIndex(
       chatMessageAutoScrollIndexById[id]!,
       duration: scrollDuration ?? scrollAnimationDuration,
-      preferPosition: AutoScrollPosition.middle,
+      preferPosition: preferPosition ?? AutoScrollPosition.middle,
     );
     if (withHighlight) {
       await _scrollController.highlight(