implemented a comprehensive Nextcloud file sharing system with support for user, group, and public link shares with gating based on server-side permissions; added sharing management interfaces including a share sheet; updated the file list with visual badges for incoming shares and improved OCS API response handling.

lib/view/pages/files/widgets/file_element.dart

@@ -1,5 +1,6 @@
 import 'package:filesize/filesize.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:nextcloud/nextcloud.dart';
 
 import '../../../../api/marianumcloud/webdav/queries/list_files/cacheable_file.dart';
@@ -8,6 +9,7 @@ import '../../../../extensions/date_time.dart';
 import '../../../../model/endpoint_data.dart';
 import '../../../../routing/app_routes.dart';
 import '../../../../share_intent/remote_file_ref.dart';
+import '../../../../state/app/modules/nextcloud_capabilities/bloc/nextcloud_capabilities_cubit.dart';
 import '../../../../utils/download_manager.dart';
 import '../../../../utils/file_clipboard.dart';
 import '../../../../utils/haptics.dart';
@@ -16,6 +18,7 @@ import '../../../../widget/confirm_dialog.dart';
 import '../../../../widget/details_bottom_sheet.dart';
 import '../../../../widget/info_dialog.dart';
 import '../../talk/widgets/highlighted_linkify.dart';
+import '../sharing/share_sheet.dart';
 import 'file_details_sheet.dart';
 import 'file_leading.dart';
 
@@ -329,7 +332,7 @@ class _FileElementState extends State<FileElement> {
         if (!widget.file.isDirectory)
           ListTile(
             leading: const CenteredLeading(Icon(Icons.chat_bubble_outline)),
-            title: const Text('Im Talk-Chat teilen'),
+            title: const Text('Im Talk-Chat versenden'),
             onTap: () {
               Navigator.of(sheetCtx).pop();
               AppRoutes.openInternalShareToChat(
@@ -338,9 +341,26 @@ class _FileElementState extends State<FileElement> {
               );
             },
           ),
+        if (context.read<NextcloudCapabilitiesCubit>().canShareAtAll)
+          ListTile(
+            leading: const CenteredLeading(Icon(Icons.person_add_outlined)),
+            title: const Text('Freigeben'),
+            onTap: () {
+              Navigator.of(sheetCtx).pop();
+              showShareSheet(context, widget.file);
+            },
+          ),
         ListTile(
-          leading: const CenteredLeading(Icon(Icons.delete_outline)),
-          title: const Text('Löschen'),
+          leading: CenteredLeading(
+            Icon(
+              Icons.delete_outline,
+              color: Theme.of(sheetCtx).colorScheme.error,
+            ),
+          ),
+          title: Text(
+            'Löschen',
+            style: TextStyle(color: Theme.of(sheetCtx).colorScheme.error),
+          ),
           onTap: () {
             Navigator.of(sheetCtx).pop();
             _delete();

lib/view/pages/files/widgets/file_leading.dart

@@ -23,7 +23,7 @@ class FileLeading extends StatelessWidget {
   Widget build(BuildContext context) {
     final icon = Icon(iconForFile(file), size: size);
     final fileId = file.fileId;
-    return SizedBox(
+    final base = SizedBox(
       width: size,
       height: size,
       child: (file.isDirectory || file.hasPreview != true || fileId == null)
@@ -47,5 +47,31 @@ class FileLeading extends StatelessWidget {
               ),
             ),
     );
+
+    // Badge incoming shares (shared with the user by someone else).
+    if (file.isSharedWithMe != true) return base;
+    final colors = Theme.of(context).colorScheme;
+    return Stack(
+      clipBehavior: Clip.none,
+      children: [
+        base,
+        Positioned(
+          right: -3,
+          bottom: -3,
+          child: Container(
+            decoration: BoxDecoration(
+              color: colors.errorContainer,
+              shape: BoxShape.circle,
+            ),
+            padding: const EdgeInsets.all(1),
+            child: Icon(
+              Icons.people,
+              size: size * 0.45,
+              color: colors.onErrorContainer,
+            ),
+          ),
+        ),
+      ],
+    );
   }
 }