From 77736fa5a7e6b82c0ad3f67685e3729eedb422cf Mon Sep 17 00:00:00 2001
From: Giuseppe Alfredo Dimola <131204423+lazyengi@users.noreply.github.com>
Date: Sun, 19 May 2024 02:06:24 +0200
Subject: [PATCH] Added a function that can provide a decision between a snap
 or not

in my case i needed to stop to snap when the keyboard is open
---
 lib/scroll_snap_list.dart | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/lib/scroll_snap_list.dart b/lib/scroll_snap_list.dart
index 9e1d843..b473d54 100644
--- a/lib/scroll_snap_list.dart
+++ b/lib/scroll_snap_list.dart
@@ -123,6 +123,8 @@ class ScrollSnapList extends StatefulWidget {
 
   final EdgeInsetsGeometry? listViewPadding;
 
+  final bool Function()? canIScroll;
+
   ScrollSnapList(
       {this.background,
       required this.itemBuilder,
@@ -154,7 +156,8 @@ class ScrollSnapList extends StatefulWidget {
       this.clipBehavior = Clip.hardEdge,
       this.keyboardDismissBehavior = ScrollViewKeyboardDismissBehavior.manual,
       this.dispatchScrollNotifications = false,
-      this.listViewPadding})
+      this.listViewPadding,
+      this.canIScroll})
       : listController = listController ?? ScrollController(),
         super(key: key);
 
@@ -383,6 +386,9 @@ class ScrollSnapListState extends State<ScrollSnapList> {
 
                   //only animate if not yet snapped (tolerance 0.01 pixel)
                   if ((scrollInfo.metrics.pixels - offset).abs() > 0.01) {
+                    if (widget.canIScroll != null && !widget.canIScroll!()) {
+                      return false;
+                    }
                     _animateScroll(offset);
                   }
                 } else if (scrollInfo is ScrollUpdateNotification) {