refactor(neon_files): add FilesBrowserMode for cleaner apis

Signed-off-by: Nikolas Rimikis <rimikis.nikolas@gmail.com>

packages/neon/neon_files/lib/dialogs/choose_folder.dart

@@ -25,8 +25,7 @@ class FilesChooseFolderDialog extends StatelessWidget {
                 child: FilesBrowserView(
                   bloc: bloc,
                   filesBloc: filesBloc,
-                  enableFileActions: false,
-                  onlyShowDirectories: true,
+                  mode: FilesBrowserMode.selectDirectory,
                 ),
               ),
               StreamBuilder<List<String>>(

packages/neon/neon_files/lib/pages/main.dart

@@ -27,21 +27,6 @@ class _FilesMainPageState extends State<FilesMainPage> {
         body: FilesBrowserView(
           bloc: bloc.browser,
           filesBloc: bloc,
-          onPickFile: (final details) async {
-            final sizeWarning = bloc.options.downloadSizeWarning.value;
-            if (sizeWarning != null && details.size != null && details.size! > sizeWarning) {
-              if (!(await showConfirmationDialog(
-                context,
-                AppLocalizations.of(context).downloadConfirmSizeWarning(
-                  filesize(sizeWarning),
-                  filesize(details.size),
-                ),
-              ))) {
-                return;
-              }
-            }
-            bloc.openFile(details.path, details.etag!, details.mimeType);
-          },
         ),
         floatingActionButton: FloatingActionButton(
           onPressed: () async {

packages/neon/neon_files/lib/widgets/browser_view.dart

@@ -1,21 +1,30 @@
 part of '../neon_files.dart';
 
+/// Mode to operate the [FilesBrowserView] in.
+enum FilesBrowserMode {
+  /// Default file browser mode.
+  ///
+  /// When a file is selecteed it will be opened or downloaded.
+  browser,
+
+  /// Select directory.
+  selectDirectory,
+
+  /// Don't show file actions.
+  noActions,
+}
+
 class FilesBrowserView extends StatefulWidget {
   const FilesBrowserView({
     required this.bloc,
     required this.filesBloc,
-    this.onPickFile,
-    this.enableFileActions = true,
-    this.onlyShowDirectories = false,
+    this.mode = FilesBrowserMode.browser,
     super.key,
-    // ignore: prefer_asserts_with_message
-  }) : assert((onPickFile == null) == onlyShowDirectories);
+  });
 
   final FilesBrowserBloc bloc;
   final FilesBloc filesBloc;
-  final Function(FileDetails)? onPickFile;
-  final bool enableFileActions;
-  final bool onlyShowDirectories;
+  final FilesBrowserMode mode;
 
   @override
   State<FilesBrowserView> createState() => _FilesBrowserViewState();
@@ -24,11 +33,11 @@ class FilesBrowserView extends StatefulWidget {
 class _FilesBrowserViewState extends State<FilesBrowserView> {
   @override
   void initState() {
-    super.initState();
-
     widget.bloc.errors.listen((final error) {
       NeonException.showSnackbar(context, error);
     });
+
+    super.initState();
   }
 
   @override
@@ -68,12 +77,11 @@ class _FilesBrowserViewState extends State<FilesBrowserView> {
                               details: FileDetails.fromUploadTask(
                                 task: uploadTask,
                               ),
-                              enableFileActions: widget.enableFileActions,
-                              onPickFile: widget.onPickFile,
+                              mode: widget.mode,
                             ),
                           ],
                           for (final file in sorted) ...[
-                            if (!widget.onlyShowDirectories || file.isDirectory) ...[
+                            if (widget.mode != FilesBrowserMode.selectDirectory || file.isDirectory) ...[
                               Builder(
                                 builder: (final context) {
                                   final matchingTask = tasksSnapshot.requireData
@@ -93,8 +101,7 @@ class _FilesBrowserViewState extends State<FilesBrowserView> {
                                     bloc: widget.filesBloc,
                                     browserBloc: widget.bloc,
                                     details: details,
-                                    enableFileActions: widget.enableFileActions,
-                                    onPickFile: widget.onPickFile,
+                                    mode: widget.mode,
                                   );
                                 },
                               ),

packages/neon/neon_files/lib/widgets/file_list_tile.dart

@@ -1,7 +1,9 @@
 import 'package:filesize/filesize.dart';
 import 'package:flutter/material.dart';
 import 'package:material_design_icons_flutter/material_design_icons_flutter.dart';
+import 'package:neon/utils.dart';
 import 'package:neon/widgets.dart';
+import 'package:neon_files/l10n/localizations.dart';
 import 'package:neon_files/neon_files.dart';
 import 'package:neon_files/widgets/actions.dart';
 
@@ -10,32 +12,39 @@ class FileListTile extends StatelessWidget {
     required this.bloc,
     required this.browserBloc,
     required this.details,
-    this.enableFileActions = true,
-    this.onPickFile,
+    this.mode = FilesBrowserMode.browser,
     super.key,
   });
 
   final FilesBloc bloc;
   final FilesBrowserBloc browserBloc;
   final FileDetails details;
-  final bool enableFileActions;
-  final Function(FileDetails)? onPickFile;
+  final FilesBrowserMode mode;
 
-  @override
-  Widget build(final BuildContext context) {
-    // When the ETag is null it means we are uploading this file right now
-    final onTap = details.isDirectory || details.etag != null
-        ? () {
+  Future<void> _onTap(final BuildContext context, final FileDetails details) async {
     if (details.isDirectory) {
       browserBloc.setPath(details.path);
-            } else {
-              onPickFile?.call(details);
+    } else if (mode == FilesBrowserMode.browser) {
+      final sizeWarning = bloc.options.downloadSizeWarning.value;
+      if (sizeWarning != null && details.size != null && details.size! > sizeWarning) {
+        if (!(await showConfirmationDialog(
+          context,
+          AppLocalizations.of(context).downloadConfirmSizeWarning(
+            filesize(sizeWarning),
+            filesize(details.size),
+          ),
+        ))) {
+          return;
+        }
+      }
+      bloc.openFile(details.path, details.etag!, details.mimeType);
     }
   }
-        : null;
 
-    return ListTile(
-      onTap: onTap,
+  @override
+  Widget build(final BuildContext context) => ListTile(
+        // When the ETag is null it means we are uploading this file right now
+        onTap: details.isDirectory || details.etag != null ? () async => _onTap(context, details) : null,
         title: Text(
           details.name,
           overflow: TextOverflow.ellipsis,
@@ -63,14 +72,13 @@ class FileListTile extends StatelessWidget {
           details: details,
           bloc: bloc,
         ),
-      trailing: !details.hasTask && enableFileActions
+        trailing: !details.hasTask && mode != FilesBrowserMode.noActions
             ? FileActions(details: details)
             : const SizedBox.square(
                 dimension: 48,
               ),
       );
 }
-}
 
 class _FileIcon extends StatelessWidget {
   const _FileIcon({