Move to file_picker v13 and device_info_plus v13 (win32 v6)

Both depend on win32 v6, like current Serverpod, so an app that also uses Serverpod can resolve the editor in one pub workspace; file_picker v10 and device_info_plus v12 need win32 v5.

file_picker v12 made its API static, returns the picked files directly and reads their content on demand (PlatformFile.readAsBytes()); v13 removed the parameters v12 had deprecated. The FilePickerService implementation keeps its interface: withData, withReadStream and lockParentWindow are ignored, allowMultiple chooses between pickFiles() and pickFile(), and saveFile() saves an empty file, since file_picker now writes the file itself and needs its content up front. The image upload reads the picked file's bytes on the web; the example app saves and opens files with the new API.

Raises the minimum to Dart v3.11 and Flutter v3.41.6 (device_info_plus v13).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

example/lib/home_page.dart

@@ -435,53 +435,51 @@ class _HomePageState extends State<HomePage> {
         );
       }
     } else {
-      // for desktop
-      final path = await FilePicker.platform.saveFile(
+      // for desktop: file_picker v13 writes the file itself.
+      final Uint8List bytes;
+      if (fileType == ExportFileType.pdf) {
+        final pdf = await PdfHTMLEncoder(
+          fontFallback: [
+            await PdfGoogleFonts.notoColorEmoji(),
+            await PdfGoogleFonts.notoColorEmojiRegular(),
+          ],
+        ).convert(result);
+        bytes = await pdf.save();
+      } else {
+        bytes = utf8.encode(result);
+      }
+      final uri = await FilePicker.saveFile(
         fileName: 'document.${fileType.extension}',
+        bytes: bytes,
       );
-      if (path != null) {
-        await File(path).writeAsString(result);
-        if (fileType == ExportFileType.pdf) {
-          final pdf = await PdfHTMLEncoder(
-            fontFallback: [
-              await PdfGoogleFonts.notoColorEmoji(),
-              await PdfGoogleFonts.notoColorEmojiRegular(),
-            ],
-          ).convert(result);
-
-          await File(path).writeAsBytes(await pdf.save());
-        }
-
-        if (mounted) {
-          ScaffoldMessenger.of(context).showSnackBar(
-            SnackBar(
-              content: Text('This document is saved to the $path'),
-            ),
-          );
-        }
+      if (uri != null && mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(
+            content: Text('This document is saved to the ${uri.toFilePath()}'),
+          ),
+        );
       }
     }
   }
 
   void _importFile(ExportFileType fileType) async {
-    final result = await FilePicker.platform.pickFiles(
-      allowMultiple: false,
+    final file = await FilePicker.pickFile(
       allowedExtensions: [fileType.extension],
       type: FileType.custom,
     );
+    if (file == null) {
+      return;
+    }
     var plainText = '';
     if (!kIsWeb) {
-      final path = result?.files.single.path;
+      final path = file.path;
       if (path == null) {
         return;
       }
       plainText = await File(path).readAsString();
     } else {
-      final bytes = result?.files.first.bytes;
-      if (bytes == null) {
-        return;
-      }
-      plainText = const Utf8Decoder().convert(bytes);
+      // file_picker v13 reads a file's content on demand.
+      plainText = const Utf8Decoder().convert(await file.readAsBytes());
     }
 
     var jsonString = '';

example/pubspec.yaml

@@ -42,7 +42,7 @@ dependencies:
   google_fonts: ^6.1.0
   flutter_localizations:
     sdk: flutter
-  file_picker: ^10.3.10
+  file_picker: ^13.1.0
   universal_html: ^2.0.8
   highlight: ^0.7.0
   http: ^1.1.0

lib/src/editor/block_component/image_block_component/image_upload_widget.dart

@@ -335,15 +335,19 @@ class _UploadImageMenuState extends State<UploadImageMenu> {
               dialogTitle: '',
               type: kIsWeb ? fp.FileType.custom : fp.FileType.image,
               allowedExtensions: kIsWeb ? allowedExtensions : null,
-              withData: kIsWeb,
             );
             if (result != null && result.files.isNotEmpty) {
+              final file = result.files.first;
+              // file_picker v13 reads a file's content on demand.
+              final bytes = kIsWeb ? await file.readAsBytes() : null;
+              if (!mounted) {
+                return;
+              }
               setState(() {
-                final bytes = result.files.first.bytes;
-                if (kIsWeb && bytes != null) {
+                if (bytes != null) {
                   _imagePathOrContent = base64String(bytes);
                 } else {
-                  _imagePathOrContent = result.files.first.path;
+                  _imagePathOrContent = file.path;
                 }
               });
             }

lib/src/editor/util/file_picker/file_picker_impl.dart

@@ -1,12 +1,19 @@
+import 'dart:typed_data';
+
 import 'package:appflowy_editor/src/editor/util/file_picker/file_picker_service.dart';
 import 'package:file_picker/file_picker.dart' as fp;
 
+/// [FilePickerService] on top of file_picker v13, whose API is static and
+/// returns the picked files directly.
 class FilePicker implements FilePickerService {
   @override
   Future<String?> getDirectoryPath({String? title}) {
-    return fp.FilePicker.platform.getDirectoryPath();
+    return fp.FilePicker.getDirectoryPath(dialogTitle: title);
   }
 
+  /// [withData], [withReadStream] and [lockParentWindow] no longer exist in
+  /// file_picker v13 and are ignored: read a picked file's content with
+  /// `PlatformFile.readAsBytes()` or `PlatformFile.readAsByteStream()`.
   @override
   Future<FilePickerResult?> pickFiles({
     String? dialogTitle,
@@ -19,21 +26,31 @@ class FilePicker implements FilePickerService {
     bool withReadStream = false,
     bool lockParentWindow = false,
   }) async {
-    final result = await fp.FilePicker.platform.pickFiles(
+    if (allowMultiple) {
+      final files = await fp.FilePicker.pickFiles(
+        dialogTitle: dialogTitle,
+        initialDirectory: initialDirectory,
+        type: type,
+        allowedExtensions: allowedExtensions,
+        onFileLoading: onFileLoading,
+      );
+      return FilePickerResult(files);
+    }
+
+    final file = await fp.FilePicker.pickFile(
       dialogTitle: dialogTitle,
       initialDirectory: initialDirectory,
       type: type,
       allowedExtensions: allowedExtensions,
       onFileLoading: onFileLoading,
-      allowMultiple: allowMultiple,
-      withData: withData,
-      withReadStream: withReadStream,
-      lockParentWindow: lockParentWindow,
     );
-
-    return FilePickerResult(result?.files ?? []);
+    return FilePickerResult([?file]);
   }
 
+  /// file_picker v13 writes the file itself and needs its content up front,
+  /// while this service only asks where to save. So it saves an empty file
+  /// there and returns its path (or its URI where there is no local path) for
+  /// the caller to write to. [lockParentWindow] is ignored.
   @override
   Future<String?> saveFile({
     String? dialogTitle,
@@ -42,14 +59,18 @@ class FilePicker implements FilePickerService {
     fp.FileType type = fp.FileType.any,
     List<String>? allowedExtensions,
     bool lockParentWindow = false,
-  }) {
-    return fp.FilePicker.platform.saveFile(
+  }) async {
+    final uri = await fp.FilePicker.saveFile(
+      fileName: fileName ?? 'untitled',
+      bytes: Uint8List(0),
       dialogTitle: dialogTitle,
-      fileName: fileName,
       initialDirectory: initialDirectory,
       type: type,
       allowedExtensions: allowedExtensions,
-      lockParentWindow: lockParentWindow,
     );
+    if (uri == null) {
+      return null;
+    }
+    return uri.scheme == 'file' ? uri.toFilePath() : uri.toString();
   }
 }

pubspec.yaml

@@ -5,17 +5,17 @@ version: 6.1.0
 homepage: "https://github.com/AppFlowy-IO/appflowy-editor"
 
 environment:
-  sdk: ">=3.6.0 <4.0.0"
-  flutter: ">=3.32.0"
+  sdk: ">=3.11.0 <4.0.0"
+  flutter: ">=3.41.6"
 
 description: A highly customizable rich-text editor for Flutter. The AppFlowy
   Editor project for AppFlowy and beyond.
 
 dependencies:
   collection: "^1.18.0"
-  device_info_plus: ^12.3.0
+  device_info_plus: ^13.2.0
   diff_match_patch: "^0.4.1"
-  file_picker: ^10.3.10
+  file_picker: ^13.1.0
   flutter:
     sdk: flutter
   flutter_svg: "^2.0.6"