refactor: Move SortingOrderSelector into its own widget

Also translate it

assets/langs/en.yaml

@@ -133,6 +133,8 @@ widgets:
       two: "{} Notes link to this Note"
       few: "{} Notes link to this Note"
       other: "{} Notes link to this Note"
+  SortingOrderSelector:
+    title: Sorting Criteria
 
 rootFolder: Root Folder
 ignoredFiles:

lib/screens/folder_view.dart

@@ -19,6 +19,7 @@ import 'package:gitjournal/widgets/app_bar_menu_button.dart';
 import 'package:gitjournal/widgets/app_drawer.dart';
 import 'package:gitjournal/widgets/new_note_nav_bar.dart';
 import 'package:gitjournal/widgets/note_search_delegate.dart';
+import 'package:gitjournal/widgets/sorting_order_selector.dart';
 import 'package:gitjournal/widgets/sync_button.dart';
 
 enum DropDownChoices {
@@ -185,34 +186,11 @@ class _FolderViewState extends State<FolderView> {
     _scaffoldKey.currentState.removeCurrentSnackBar();
   }
 
-  RadioListTile<SortingMode> _buildSortingTile(SortingMode sm) {
-    return RadioListTile<SortingMode>(
-      title: Text(sm.toPublicString()),
-      value: sm,
-      groupValue: sortedNotesFolder.sortingMode,
-      onChanged: (SortingMode sm) => Navigator.of(context).pop(sm),
-    );
-  }
-
   void _sortButtonPressed() async {
     var newSortingMode = await showDialog<SortingMode>(
       context: context,
-      builder: (BuildContext context) {
-        var children = <Widget>[
-          _buildSortingTile(SortingMode.Modified),
-          _buildSortingTile(SortingMode.Created),
-          _buildSortingTile(SortingMode.Title),
-          _buildSortingTile(SortingMode.FileName),
-        ];
-
-        return AlertDialog(
-          title: const Text("Sorting Criteria"),
-          content: Column(
-            children: children,
-            mainAxisSize: MainAxisSize.min,
-          ),
-        );
-      },
+      builder: (BuildContext context) =>
+          SortingOrderSelector(sortedNotesFolder.sortingMode),
     );
 
     if (newSortingMode != null) {

lib/widgets/sorting_order_selector.dart

@@ -0,0 +1,41 @@
+import 'package:flutter/material.dart';
+
+import 'package:easy_localization/easy_localization.dart';
+
+import 'package:gitjournal/core/sorting_mode.dart';
+
+class SortingOrderSelector extends StatelessWidget {
+  final SortingMode selectedMode;
+
+  SortingOrderSelector(this.selectedMode);
+
+  @override
+  Widget build(BuildContext context) {
+    var children = <Widget>[
+      _buildSortingTile(context, SortingMode.Modified),
+      _buildSortingTile(context, SortingMode.Created),
+      _buildSortingTile(context, SortingMode.Title),
+      _buildSortingTile(context, SortingMode.FileName),
+    ];
+
+    return AlertDialog(
+      title: Text(tr("widgets.SortingOrderSelector.title")),
+      content: Column(
+        children: children,
+        mainAxisSize: MainAxisSize.min,
+      ),
+    );
+  }
+
+  RadioListTile<SortingMode> _buildSortingTile(
+    BuildContext context,
+    SortingMode sm,
+  ) {
+    return RadioListTile<SortingMode>(
+      title: Text(sm.toPublicString()),
+      value: sm,
+      groupValue: selectedMode,
+      onChanged: (SortingMode sm) => Navigator.of(context).pop(sm),
+    );
+  }
+}