reorganize

lib/widgets/chat_page/room_appbar.dart

@@ -0,0 +1,57 @@
+import "package:flutter/material.dart";
+import "package:nexus/helpers/extension_helper.dart";
+import "package:nexus/models/full_room.dart";
+import "package:nexus/widgets/appbar.dart";
+import "package:nexus/widgets/avatar_or_hash.dart";
+
+class RoomAppbar extends StatelessWidget implements PreferredSizeWidget {
+  final bool isDesktop;
+  final FullRoom room;
+  final void Function(BuildContext context) onOpenMemberList;
+  final void Function(BuildContext context) onOpenDrawer;
+  const RoomAppbar(
+    this.room, {
+    required this.isDesktop,
+    required this.onOpenMemberList,
+    required this.onOpenDrawer,
+    super.key,
+  });
+
+  @override
+  Size get preferredSize => AppBar().preferredSize;
+
+  @override
+  Widget build(BuildContext context) => Appbar(
+    leading: isDesktop
+        ? AvatarOrHash(
+            room.avatar,
+            room.title,
+            height: 32,
+            fallback: Icon(Icons.numbers),
+            headers: room.roomData.client.headers,
+          )
+        : DrawerButton(onPressed: () => onOpenDrawer(context)),
+    scrolledUnderElevation: 0,
+    title: Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        Text(room.title, overflow: TextOverflow.ellipsis),
+        if (room.roomData.topic.isNotEmpty)
+          Text(
+            room.roomData.topic,
+            maxLines: 1,
+            overflow: TextOverflow.ellipsis,
+            style: Theme.of(context).textTheme.labelMedium?.copyWith(
+              color: Theme.of(context).colorScheme.onSurfaceVariant,
+            ),
+          ),
+      ],
+    ),
+    actions: [
+      IconButton(
+        onPressed: () => onOpenMemberList(context),
+        icon: Icon(Icons.people),
+      ),
+    ],
+  );
+}