loading state and error handling refactor

lib/view/pages/talk/widgets/chat_tile.dart

@@ -1,3 +1,4 @@
+import 'dart:async';
 
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
@@ -11,6 +12,7 @@ import '../../../../api/marianumcloud/talk/setReadMarker/setReadMarkerParams.dar
 import '../../../../model/account_data.dart';
 import '../../../../state/app/modules/chat/bloc/chat_bloc.dart';
 import '../../../../state/app/modules/chatList/bloc/chat_list_bloc.dart';
+import '../../../../widget/async_action_button.dart';
 import '../../../../widget/confirm_dialog.dart';
 import '../../../../widget/debug/debug_tile.dart';
 import '../../../../widget/user_avatar.dart';
@@ -42,15 +44,14 @@ class _ChatTileState extends State<ChatTile> {
 
   void _refreshList() => context.read<ChatListBloc>().refresh();
 
-  void setCurrentAsRead() {
-    SetReadMarker(
+  Future<void> _setCurrentAsRead() async {
+    await SetReadMarker(
       widget.data.token,
       true,
       setReadMarkerParams: SetReadMarkerParams(lastReadMessage: widget.data.lastMessage.id),
-    ).run().then((_) {
-      if (!mounted) return;
-      _refreshList();
-    });
+    ).run();
+    if (!mounted) return;
+    _refreshList();
   }
 
   @override
@@ -116,7 +117,7 @@ class _ChatTileState extends State<ChatTile> {
             ),
       onTap: () {
         if (selfUsername == null) return;
-        setCurrentAsRead();
+        unawaited(_setCurrentAsRead());
         final view = ChatView(room: widget.data, selfId: selfUsername!, avatar: circleAvatar);
         TalkNavigator.pushSplitView(context, view, overrideToSingleSubScreen: true);
         context.read<ChatBloc>().setToken(widget.data.token);
@@ -125,65 +126,53 @@ class _ChatTileState extends State<ChatTile> {
         if (widget.disableContextActions) return;
         showDialog(context: context, builder: (dialogCtx) => SimpleDialog(
           children: [
-            Visibility(
-              visible: widget.data.unreadMessages > 0,
-              replacement: ListTile(
-                leading: const Icon(Icons.mark_chat_unread_outlined),
-                title: const Text('Als ungelesen markieren'),
-                onTap: () {
-                  SetReadMarker(widget.data.token, false).run().then((_) {
-                    if (mounted) _refreshList();
-                  });
-                  Navigator.of(dialogCtx).pop();
-                },
-              ),
-              child: ListTile(
+            if (widget.data.unreadMessages > 0)
+              AsyncListTile(
                 leading: const Icon(Icons.mark_chat_read_outlined),
                 title: const Text('Als gelesen markieren'),
-                onTap: () {
-                  setCurrentAsRead();
-                  Navigator.of(dialogCtx).pop();
+                onPressed: _setCurrentAsRead,
+              )
+            else
+              AsyncListTile(
+                leading: const Icon(Icons.mark_chat_unread_outlined),
+                title: const Text('Als ungelesen markieren'),
+                onPressed: () async {
+                  await SetReadMarker(widget.data.token, false).run();
+                  if (mounted) _refreshList();
                 },
               ),
-            ),
-            Visibility(
-              visible: widget.data.isFavorite,
-              replacement: ListTile(
-                leading: const Icon(Icons.star_outline),
-                title: const Text('Zu Favoriten hinzufügen'),
-                onTap: () {
-                  SetFavorite(widget.data.token, true).run().then((_) {
-                    if (mounted) _refreshList();
-                  });
-                  Navigator.of(dialogCtx).pop();
-                },
-              ),
-              child: ListTile(
+            if (widget.data.isFavorite)
+              AsyncListTile(
                 leading: const Icon(Icons.stars_outlined),
                 title: const Text('Von Favoriten entfernen'),
-                onTap: () {
-                  SetFavorite(widget.data.token, false).run().then((_) {
-                    if (mounted) _refreshList();
-                  });
-                  Navigator.of(dialogCtx).pop();
+                onPressed: () async {
+                  await SetFavorite(widget.data.token, false).run();
+                  if (mounted) _refreshList();
+                },
+              )
+            else
+              AsyncListTile(
+                leading: const Icon(Icons.star_outline),
+                title: const Text('Zu Favoriten hinzufügen'),
+                onPressed: () async {
+                  await SetFavorite(widget.data.token, true).run();
+                  if (mounted) _refreshList();
                 },
               ),
-            ),
             ListTile(
               leading: const Icon(Icons.delete_outline),
               title: const Text('Konversation verlassen'),
               onTap: () {
+                Navigator.of(dialogCtx).pop();
                 ConfirmDialog(
                   title: 'Chat verlassen',
                   content: 'Du benötigst ggf. eine Einladung um erneut beizutreten.',
-                  confirmButton: 'Löschen',
-                  onConfirm: () {
-                    LeaveRoom(widget.data.token).run().then((_) {
-                      if (mounted) _refreshList();
-                    });
-                    Navigator.of(dialogCtx).pop();
+                  confirmButton: 'Verlassen',
+                  onConfirmAsync: () async {
+                    await LeaveRoom(widget.data.token).run();
+                    if (mounted) _refreshList();
                   },
-                ).asDialog(dialogCtx);
+                ).asDialog(context);
               },
             ),
             DebugTile(dialogCtx).jsonData(widget.data.toJson()),