From 085f4b2eca34c2ebaf59955c1297446b3b7bb45d Mon Sep 17 00:00:00 2001
From: Thibault Deckers <thibault.deckers@gmail.com>
Date: Mon, 28 Feb 2022 21:47:02 +0900
Subject: [PATCH] minor fix

---
 lib/widgets/map/map_page.dart                            | 2 +-
 lib/widgets/viewer/overlay/bottom/thumbnail_preview.dart | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/widgets/map/map_page.dart b/lib/widgets/map/map_page.dart
index 4fe6aafe2..3987bd2f1 100644
--- a/lib/widgets/map/map_page.dart
+++ b/lib/widgets/map/map_page.dart
@@ -302,7 +302,7 @@ class _ContentState extends State<_Content> with SingleTickerProviderStateMixin
     if (regionCollection != null) {
       final regionEntries = regionCollection!.sortedEntries;
       final selectedIndex = _selectedIndexNotifier.value;
-      selectedEntry = selectedIndex != null && selectedIndex < regionEntries.length ? regionEntries[selectedIndex] : null;
+      selectedEntry = selectedIndex != null && 0 <= selectedIndex && selectedIndex < regionEntries.length ? regionEntries[selectedIndex] : null;
     }
 
     _regionCollectionNotifier.value = openingCollection.copyWith(
diff --git a/lib/widgets/viewer/overlay/bottom/thumbnail_preview.dart b/lib/widgets/viewer/overlay/bottom/thumbnail_preview.dart
index a9b419455..f223cf4c6 100644
--- a/lib/widgets/viewer/overlay/bottom/thumbnail_preview.dart
+++ b/lib/widgets/viewer/overlay/bottom/thumbnail_preview.dart
@@ -56,7 +56,7 @@ class _ViewerThumbnailPreviewState extends State<ViewerThumbnailPreview> {
     return ThumbnailScroller(
       availableWidth: widget.availableWidth,
       entryCount: entryCount,
-      entryBuilder: (index) => index < entryCount ? entries[index] : null,
+      entryBuilder: (index) => 0 <= index && index < entryCount ? entries[index] : null,
       indexNotifier: _entryIndexNotifier,
       onTap: (index) => ViewEntryNotification(index: index).dispatch(context),
     );