From 702fac4b38700e12e42ab0fd21891dab0d29d090 Mon Sep 17 00:00:00 2001
From: Ming Ming <nkming2@gmail.com>
Date: Fri, 8 Dec 2023 00:08:16 +0800
Subject: [PATCH] Fix NPE in viewer pane

---
 app/lib/widget/viewer_detail_pane.dart | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/app/lib/widget/viewer_detail_pane.dart b/app/lib/widget/viewer_detail_pane.dart
index 3679410d..431ef1d2 100644
--- a/app/lib/widget/viewer_detail_pane.dart
+++ b/app/lib/widget/viewer_detail_pane.dart
@@ -146,11 +146,16 @@ class _ViewerDetailPaneState extends State<ViewerDetailPane> {
     final timeStr = DateFormat(DateFormat.HOUR_MINUTE,
             Localizations.localeOf(context).languageCode)
         .format(_dateTime);
-    final collectionAdapter = CollectionAdapter.of(KiwiContainer().resolve(),
-        widget.account, widget.fromCollection!.collection);
-    final isShowDelete = widget.fromCollection != null &&
-        collectionAdapter.isPermitted(CollectionCapability.deleteItem) &&
-        collectionAdapter.isItemDeletable(widget.fromCollection!.item);
+    final bool isShowDelete;
+    if (widget.fromCollection != null) {
+      final collectionAdapter = CollectionAdapter.of(KiwiContainer().resolve(),
+          widget.account, widget.fromCollection!.collection);
+      isShowDelete =
+          collectionAdapter.isPermitted(CollectionCapability.deleteItem) &&
+              collectionAdapter.isItemDeletable(widget.fromCollection!.item);
+    } else {
+      isShowDelete = false;
+    }
 
     return Material(
       type: MaterialType.transparency,