From b9db931017d34e8815c1325326065a584380a858 Mon Sep 17 00:00:00 2001
From: pa <maplenagisa@gmail.com>
Date: Sat, 21 Feb 2026 20:49:55 +0900
Subject: [PATCH] add tanstack/vue-virtual

---
 .../Sidebar/components/NotificationItem.vue   |  17 ++-
 .../Sidebar/components/NotificationList.vue   | 120 +++++++++++++-----
 2 files changed, 100 insertions(+), 37 deletions(-)

diff --git a/src/views/Sidebar/components/NotificationItem.vue b/src/views/Sidebar/components/NotificationItem.vue
index 1a116649..df54e892 100644
--- a/src/views/Sidebar/components/NotificationItem.vue
+++ b/src/views/Sidebar/components/NotificationItem.vue
@@ -145,8 +145,8 @@
                 </div>
             </Item>
         </HoverCardTrigger>
-        <HoverCardContent side="left" :side-offset="8" class="w-80 p-3">
-            <!-- Group notifications -->
+        <HoverCardContent side="left" :side-offset="8" class="w-100 p-3">
+            <!-- Group  -->
             <template v-if="isGroupType">
                 <div class="flex items-center gap-2 mb-2">
                     <Avatar class="size-8 shrink-0 rounded">
@@ -182,15 +182,19 @@
                         <p class="text-xs text-muted-foreground">{{ typeLabel }}</p>
                     </div>
                 </div>
-                <p v-if="notification.details?.worldName" class="text-xs mb-1">
-                    <span class="text-muted-foreground">World: </span>{{ notification.details.worldName }}
-                </p>
+                <div v-if="notification.details?.worldId" class="text-xs mb-1">
+                    <Location
+                        :location="notification.details.worldId"
+                        :hint="notification.details.worldName || ''"
+                        :grouphint="notification.details.groupName || ''"
+                        link />
+                </div>
                 <p v-if="friendMessage" class="text-xs text-muted-foreground warp-break-words leading-relaxed">
                     {{ friendMessage }}
                 </p>
             </template>
 
-            <!-- Other notifications -->
+            <!-- Other  -->
             <template v-else>
                 <div class="flex items-center gap-2 mb-2">
                     <Avatar class="size-8 shrink-0">
@@ -212,7 +216,6 @@
                 </p>
             </template>
 
-            <!-- Time (always shown) -->
             <Separator v-if="absoluteTime" class="my-2" />
             <div v-if="absoluteTime" class="flex items-center gap-2 text-[10px] text-muted-foreground">
                 <CalendarDays />{{ absoluteTime }}
diff --git a/src/views/Sidebar/components/NotificationList.vue b/src/views/Sidebar/components/NotificationList.vue
index b6286703..ea5b722f 100644
--- a/src/views/Sidebar/components/NotificationList.vue
+++ b/src/views/Sidebar/components/NotificationList.vue
@@ -1,36 +1,34 @@
 <template>
     <div class="flex h-full flex-col overflow-hidden">
-        <div class="flex-1 overflow-y-auto">
-            <div v-if="sortedUnseenNotifications.length" class="flex flex-col gap-0.5 p-2">
-                <NotificationItem
-                    v-for="n in sortedUnseenNotifications"
-                    :key="n.id + n.created_at"
-                    :notification="n"
-                    :is-unseen="true"
-                    @show-invite-response="$emit('show-invite-response', $event)"
-                    @show-invite-request-response="$emit('show-invite-request-response', $event)" />
+        <div ref="scrollViewportRef" class="flex-1 overflow-y-auto">
+            <div v-if="allRows.length" class="relative w-full px-1.5 py-2" :style="virtualContainerStyle">
+                <template v-for="item in virtualItems" :key="item.virtualItem.key">
+                    <div
+                        class="absolute left-0 top-0 w-full px-0.5 box-border"
+                        :data-index="item.virtualItem.index"
+                        :ref="virtualizer.measureElement"
+                        :style="{ transform: `translateY(${item.virtualItem.start}px)` }">
+                        <!-- Section header -->
+                        <div v-if="item.row.type === 'section-header'" class="flex items-center gap-2 px-2.5 py-2">
+                            <Separator class="flex-1" />
+                            <span class="shrink-0 text-[10px] text-muted-foreground uppercase tracking-wider">
+                                {{ item.row.label }}
+                            </span>
+                            <Separator class="flex-1" />
+                        </div>
+
+                        <!-- Notification item -->
+                        <NotificationItem
+                            v-else-if="item.row.type === 'notification'"
+                            :notification="item.row.notification"
+                            :is-unseen="item.row.isUnseen"
+                            @show-invite-response="$emit('show-invite-response', $event)"
+                            @show-invite-request-response="$emit('show-invite-request-response', $event)" />
+                    </div>
+                </template>
             </div>
 
-            <div v-if="sortedRecentNotifications.length">
-                <div class="flex items-center gap-2 px-4 py-2">
-                    <Separator class="flex-1" />
-                    <span class="shrink-0 text-[10px] text-muted-foreground uppercase tracking-wider">
-                        {{ t('side_panel.notification_center.past_notifications') }}
-                    </span>
-                    <Separator class="flex-1" />
-                </div>
-                <div class="flex flex-col gap-0.5 px-2 pb-2">
-                    <NotificationItem
-                        v-for="n in sortedRecentNotifications"
-                        :key="n.id + n.created_at"
-                        :notification="n"
-                        :is-unseen="false" />
-                </div>
-            </div>
-
-            <div
-                v-if="!sortedUnseenNotifications.length && !sortedRecentNotifications.length"
-                class="flex items-center justify-center p-8 text-sm text-muted-foreground">
+            <div v-if="!allRows.length" class="flex items-center justify-center p-8 text-sm text-muted-foreground">
                 {{ t('side_panel.notification_center.no_new_notifications') }}
             </div>
 
@@ -48,10 +46,11 @@
 </template>
 
 <script setup>
+    import { computed, nextTick, ref, watch } from 'vue';
     import { Button } from '@/components/ui/button';
     import { Separator } from '@/components/ui/separator';
-    import { computed } from 'vue';
     import { useI18n } from 'vue-i18n';
+    import { useVirtualizer } from '@tanstack/vue-virtual';
 
     import dayjs from 'dayjs';
 
@@ -65,6 +64,7 @@
     defineEmits(['show-invite-response', 'show-invite-request-response', 'navigate-to-table']);
 
     const { t } = useI18n();
+    const scrollViewportRef = ref(null);
 
     function getTs(n) {
         const raw = n?.created_at ?? n?.createdAt;
@@ -77,4 +77,64 @@
     const sortedRecentNotifications = computed(() =>
         [...props.recentNotifications].sort((a, b) => getTs(b) - getTs(a))
     );
+
+    const allRows = computed(() => {
+        const rows = [];
+        for (const n of sortedUnseenNotifications.value) {
+            rows.push({
+                type: 'notification',
+                key: `unseen:${n.id}`,
+                notification: n,
+                isUnseen: true
+            });
+        }
+        if (sortedRecentNotifications.value.length) {
+            rows.push({
+                type: 'section-header',
+                key: 'header:recent',
+                label: t('side_panel.notification_center.past_notifications')
+            });
+            for (const n of sortedRecentNotifications.value) {
+                rows.push({
+                    type: 'notification',
+                    key: `recent:${n.id}`,
+                    notification: n,
+                    isUnseen: false
+                });
+            }
+        }
+        return rows;
+    });
+
+    const virtualizer = useVirtualizer(
+        computed(() => ({
+            count: allRows.value.length,
+            getScrollElement: () => scrollViewportRef.value,
+            estimateSize: (index) => {
+                const row = allRows.value[index];
+                return row?.type === 'section-header' ? 32 : 56;
+            },
+            getItemKey: (index) => allRows.value[index]?.key ?? index,
+            overscan: 8
+        }))
+    );
+
+    const virtualItems = computed(() => {
+        const items = virtualizer.value?.getVirtualItems?.() ?? [];
+        return items.map((virtualItem) => ({
+            virtualItem,
+            row: allRows.value[virtualItem.index]
+        }));
+    });
+
+    const virtualContainerStyle = computed(() => ({
+        height: `${virtualizer.value?.getTotalSize?.() ?? 0}px`,
+        width: '100%'
+    }));
+
+    watch(allRows, () => {
+        nextTick(() => {
+            virtualizer.value?.measure?.();
+        });
+    });
 </script>