refactored data providers with centralized cache resolution, unified UI using custom dialogs and bottom sheets, and enhanced network error handling for Dio and TLS errors

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

@@ -11,6 +11,7 @@ import '../../../../utils/download_manager.dart';
 import '../../../../utils/file_clipboard.dart';
 import '../../../../widget/centered_leading.dart';
 import '../../../../widget/confirm_dialog.dart';
+import '../../../../widget/details_bottom_sheet.dart';
 import '../../../../widget/info_dialog.dart';
 import 'file_details_sheet.dart';
 
@@ -77,13 +78,7 @@ class _FileElementState extends State<FileElement> {
       DownloadManager.instance.clear(widget.file.path);
       _detachJob();
       setState(() {});
-      showDialog<void>(
-        context: context,
-        builder: (context) => AlertDialog(
-          title: const Text('Download'),
-          content: Text(message),
-        ),
-      );
+      InfoDialog.show(context, message, title: 'Download', copyable: true);
     } else if (status is DownloadCancelled) {
       DownloadManager.instance.clear(widget.file.path);
       _detachJob();
@@ -172,32 +167,36 @@ class _FileElementState extends State<FileElement> {
 
   Future<void> _rename() async {
     final controller = TextEditingController(text: widget.file.name);
-    final newName = await showDialog<String>(
-      context: context,
-      builder: (dialogCtx) => AlertDialog(
-        title: const Text('Umbenennen'),
-        content: TextField(
-          controller: controller,
-          decoration: const InputDecoration(labelText: 'Neuer Name'),
-          autofocus: true,
-        ),
-        actions: [
-          TextButton(onPressed: () => Navigator.of(dialogCtx).pop(), child: const Text('Abbrechen')),
-          TextButton(
-            onPressed: () => Navigator.of(dialogCtx).pop(controller.text.trim()),
-            child: const Text('Umbenennen'),
+    try {
+      final newName = await showDialog<String>(
+        context: context,
+        builder: (dialogCtx) => AlertDialog(
+          title: const Text('Umbenennen'),
+          content: TextField(
+            controller: controller,
+            decoration: const InputDecoration(labelText: 'Neuer Name'),
+            autofocus: true,
           ),
-        ],
-      ),
-    );
-    if (newName == null || newName.isEmpty || newName == widget.file.name) return;
+          actions: [
+            TextButton(onPressed: () => Navigator.of(dialogCtx).pop(), child: const Text('Abbrechen')),
+            TextButton(
+              onPressed: () => Navigator.of(dialogCtx).pop(controller.text.trim()),
+              child: const Text('Umbenennen'),
+            ),
+          ],
+        ),
+      );
+      if (newName == null || newName.isEmpty || newName == widget.file.name) return;
 
-    final parent = _parentPathOf(widget.file.path);
-    final destination = _joinPath(parent, newName, isDirectory: widget.file.isDirectory);
-    await _runWebdavOp(() async {
-      final webdav = await WebdavApi.webdav;
-      await webdav.move(PathUri.parse(widget.file.path), PathUri.parse(destination));
-    }, errorTitle: 'Umbenennen fehlgeschlagen');
+      final parent = _parentPathOf(widget.file.path);
+      final destination = _joinPath(parent, newName, isDirectory: widget.file.isDirectory);
+      await _runWebdavOp(() async {
+        final webdav = await WebdavApi.webdav;
+        await webdav.move(PathUri.parse(widget.file.path), PathUri.parse(destination));
+      }, errorTitle: 'Umbenennen fehlgeschlagen');
+    } finally {
+      controller.dispose();
+    }
   }
 
   void _putOnClipboard({required bool copy}) {
@@ -234,68 +233,55 @@ class _FileElementState extends State<FileElement> {
       widget.refetch();
     } on Object catch (e) {
       if (!mounted) return;
-      await showDialog<void>(
-        context: context,
-        builder: (dialogCtx) => AlertDialog(
-          title: Text(errorTitle),
-          content: Text(e.toString()),
-          actions: [TextButton(onPressed: () => Navigator.of(dialogCtx).pop(), child: const Text('OK'))],
-        ),
-      );
+      InfoDialog.show(context, e.toString(), title: errorTitle, copyable: true);
     }
   }
 
   void _showActionSheet() {
-    showModalBottomSheet<void>(
-      context: context,
-      showDragHandle: true,
-      builder: (sheetCtx) => SafeArea(
-        child: Column(
-          mainAxisSize: MainAxisSize.min,
-          children: [
-            ListTile(
-              leading: const CenteredLeading(Icon(Icons.info_outline)),
-              title: const Text('Info'),
-              onTap: () {
-                Navigator.of(sheetCtx).pop();
-                showFileDetailsSheet(context, widget.file);
-              },
-            ),
-            ListTile(
-              leading: const CenteredLeading(Icon(Icons.drive_file_rename_outline)),
-              title: const Text('Umbenennen'),
-              onTap: () {
-                Navigator.of(sheetCtx).pop();
-                _rename();
-              },
-            ),
-            ListTile(
-              leading: const CenteredLeading(Icon(Icons.drive_file_move_outline)),
-              title: const Text('Verschieben'),
-              onTap: () {
-                Navigator.of(sheetCtx).pop();
-                _putOnClipboard(copy: false);
-              },
-            ),
-            ListTile(
-              leading: const CenteredLeading(Icon(Icons.copy_outlined)),
-              title: const Text('Kopieren'),
-              onTap: () {
-                Navigator.of(sheetCtx).pop();
-                _putOnClipboard(copy: true);
-              },
-            ),
-            ListTile(
-              leading: const CenteredLeading(Icon(Icons.delete_outline)),
-              title: const Text('Löschen'),
-              onTap: () {
-                Navigator.of(sheetCtx).pop();
-                _delete();
-              },
-            ),
-          ],
+    showDetailsBottomSheet(
+      context,
+      children: (sheetCtx) => [
+        ListTile(
+          leading: const CenteredLeading(Icon(Icons.info_outline)),
+          title: const Text('Info'),
+          onTap: () {
+            Navigator.of(sheetCtx).pop();
+            showFileDetailsSheet(context, widget.file);
+          },
         ),
-      ),
+        ListTile(
+          leading: const CenteredLeading(Icon(Icons.drive_file_rename_outline)),
+          title: const Text('Umbenennen'),
+          onTap: () {
+            Navigator.of(sheetCtx).pop();
+            _rename();
+          },
+        ),
+        ListTile(
+          leading: const CenteredLeading(Icon(Icons.drive_file_move_outline)),
+          title: const Text('Verschieben'),
+          onTap: () {
+            Navigator.of(sheetCtx).pop();
+            _putOnClipboard(copy: false);
+          },
+        ),
+        ListTile(
+          leading: const CenteredLeading(Icon(Icons.copy_outlined)),
+          title: const Text('Kopieren'),
+          onTap: () {
+            Navigator.of(sheetCtx).pop();
+            _putOnClipboard(copy: true);
+          },
+        ),
+        ListTile(
+          leading: const CenteredLeading(Icon(Icons.delete_outline)),
+          title: const Text('Löschen'),
+          onTap: () {
+            Navigator.of(sheetCtx).pop();
+            _delete();
+          },
+        ),
+      ],
     );
   }
 

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

@@ -2,9 +2,6 @@ import 'package:flutter/material.dart';
 
 import '../data/sort_options.dart';
 
-/// AppBar action buttons for sort direction (asc/desc) and sort field
-/// (name/date/size). Pure UI – owners pass current values + selection
-/// callbacks.
 class FilesSortActions extends StatelessWidget {
   final SortOption currentSort;
   final bool ascending;