Initial commit

lib/utils/file_selector.dart

@@ -0,0 +1,38 @@
+// SPDX-FileCopyrightText: 2019-Present Christian Kußowski
+// SPDX-FileCopyrightText: 2019-Present Contributors to FluffyChat
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+import 'package:file_picker/file_picker.dart';
+import 'package:file_selector/file_selector.dart';
+import 'package:tatchat/widgets/app_lock.dart';
+import 'package:tatchat/widgets/future_loading_dialog.dart';
+import 'package:flutter/widgets.dart';
+
+Future<List<XFile>> selectFiles(
+  BuildContext context, {
+  String? title,
+  FileType type = FileType.any,
+  bool allowMultiple = false,
+}) async {
+  final result = await AppLock.of(context).pauseWhile(
+    showFutureLoadingDialog(
+      context: context,
+      future: () async {
+        if (allowMultiple) {
+          final result = await FilePicker.pickFiles(
+            type: type,
+            dialogTitle: title,
+          );
+          return result.map((file) => file.xFile).toList();
+        }
+        final result = await FilePicker.pickFile(
+          type: type,
+          dialogTitle: title,
+        );
+        return [?result?.xFile];
+      },
+    ),
+  );
+  return result.result ?? [];
+}