Add folder selection

lib/main.dart

@@ -1,4 +1,6 @@
+import 'package:file_picker/file_picker.dart';
 import 'package:flutter/material.dart';
+import 'package:shared_preferences/shared_preferences.dart';
 import 'package:sheetless/sheetview.dart';
 
 import 'sheet.dart';
@@ -31,6 +33,40 @@ class MyHomePage extends StatefulWidget {
 }
 
 class _MyHomePageState extends State<MyHomePage> {
+  Future<String?> getSavedSheetsPath() async {
+    final prefs = await SharedPreferences.getInstance();
+    return prefs.getString("sheets-path");
+  }
+
+  Future<void> saveSheetsPath(String path) async {
+    final prefs = await SharedPreferences.getInstance();
+    prefs.setString("sheets-path", path);
+  }
+
+  Future<String?> askForSheetsPath() async {
+    return await FilePicker.platform.getDirectoryPath();
+  }
+
+  Future<String> findAndSaveSheetsPath() async {
+    String? savedSheetsPath = await getSavedSheetsPath();
+    if (savedSheetsPath != null) {
+      return savedSheetsPath;
+    }
+
+    String? selectedSheetsPath = await askForSheetsPath();
+    if (selectedSheetsPath != null) {
+      await saveSheetsPath(selectedSheetsPath);
+      return selectedSheetsPath;
+    }
+
+    return "No path selected";
+  }
+
+  Future<List<Sheet>> acquireSheets() async {
+    var sheetsPath = await findAndSaveSheetsPath();
+    return loadSheetsSorted(sheetsPath);
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -38,7 +74,7 @@ class _MyHomePageState extends State<MyHomePage> {
         title: const Text("My Sheets"),
       ),
       body: FutureBuilder(
-          future: loadSheetsSorted(),
+          future: acquireSheets(),
           builder: (BuildContext context, AsyncSnapshot<List<Sheet>> snapshot) {
             if (snapshot.hasData) {
               return SheetsWidget(

lib/sheet.dart

@@ -11,17 +11,16 @@ class Sheet {
   Sheet(this.author, this.name, this.path);
 }
 
-Future<List<Sheet>> loadSheetsSorted() async {
+Future<List<Sheet>> loadSheetsSorted(String path) async {
-  var sheets = await _loadSheets();
+  var sheets = await _loadSheets(path);
   sheets.sort((left, right) => left.name.compareTo(right.name));
   return sheets;
 }
 
-Future<List<Sheet>> _loadSheets() async {
+Future<List<Sheet>> _loadSheets(String path) async {
-  // TODO: Handle directory not found
+  var dir = Directory(path);
-  var dir = Directory("/home/julian/Nextcloud/jhome/Klavier-Noten/");
   if (!dir.existsSync()) {
-    throw Exception("Folder does not exist");
+    throw Exception("Specified path '$path' does not exist");
   }
   final List<Sheet> sheets = List.empty(growable: true);
   await for (final FileSystemEntity x in dir.list()) {

macos/Flutter/GeneratedPluginRegistrant.swift

@@ -7,8 +7,10 @@ import Foundation
 
 import device_info_plus_macos
 import pdfx
+import shared_preferences_foundation
 
 func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
   DeviceInfoPlusMacosPlugin.register(with: registry.registrar(forPlugin: "DeviceInfoPlusMacosPlugin"))
   PdfxPlugin.register(with: registry.registrar(forPlugin: "PdfxPlugin"))
+  SharedPreferencesPlugin.register(with: registry.registrar(forPlugin: "SharedPreferencesPlugin"))
 }

pubspec.lock

@@ -137,6 +137,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "6.1.4"
+  file_picker:
+    dependency: "direct main"
+    description:
+      name: file_picker
+      sha256: d090ae03df98b0247b82e5928f44d1b959867049d18d73635e2e0bc3f49542b9
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.2.5"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -150,6 +158,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.0.1"
+  flutter_plugin_android_lifecycle:
+    dependency: transitive
+    description:
+      name: flutter_plugin_android_lifecycle
+      sha256: "60fc7b78455b94e6de2333d2f95196d32cf5c22f4b0b0520a628804cb463503b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.7"
   flutter_test:
     dependency: "direct dev"
     description: flutter
@@ -208,6 +224,30 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.8.2"
+  path_provider_linux:
+    dependency: transitive
+    description:
+      name: path_provider_linux
+      sha256: "2e32f1640f07caef0d3cb993680f181c79e54a3827b997d5ee221490d131fbd9"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.8"
+  path_provider_platform_interface:
+    dependency: transitive
+    description:
+      name: path_provider_platform_interface
+      sha256: f0abc8ebd7253741f05488b4813d936b4d07c6bae3e86148a09e342ee4b08e76
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.5"
+  path_provider_windows:
+    dependency: transitive
+    description:
+      name: path_provider_windows
+      sha256: bcabbe399d4042b8ee687e17548d5d3f527255253b4a639f5f8d2094a9c2b45c
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.3"
   pdfx:
     dependency: "direct main"
     description:
@@ -224,6 +264,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.14.0"
+  platform:
+    dependency: transitive
+    description:
+      name: platform
+      sha256: "4a451831508d7d6ca779f7ac6e212b4023dd5a7d08a27a63da33756410e32b76"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.0"
   plugin_platform_interface:
     dependency: transitive
     description:
@@ -232,6 +280,70 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.1.3"
+  process:
+    dependency: transitive
+    description:
+      name: process
+      sha256: "53fd8db9cec1d37b0574e12f07520d582019cb6c44abf5479a01505099a34a09"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.2.4"
+  shared_preferences:
+    dependency: "direct main"
+    description:
+      name: shared_preferences
+      sha256: "5949029e70abe87f75cfe59d17bf5c397619c4b74a099b10116baeb34786fad9"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.17"
+  shared_preferences_android:
+    dependency: transitive
+    description:
+      name: shared_preferences_android
+      sha256: "955e9736a12ba776bdd261cf030232b30eadfcd9c79b32a3250dd4a494e8c8f7"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.15"
+  shared_preferences_foundation:
+    dependency: transitive
+    description:
+      name: shared_preferences_foundation
+      sha256: "2b55c18636a4edc529fa5cd44c03d3f3100c00513f518c5127c951978efcccd0"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.3"
+  shared_preferences_linux:
+    dependency: transitive
+    description:
+      name: shared_preferences_linux
+      sha256: f8ea038aa6da37090093974ebdcf4397010605fd2ff65c37a66f9d28394cb874
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.3"
+  shared_preferences_platform_interface:
+    dependency: transitive
+    description:
+      name: shared_preferences_platform_interface
+      sha256: da9431745ede5ece47bc26d5d73a9d3c6936ef6945c101a5aca46f62e52c1cf3
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.0"
+  shared_preferences_web:
+    dependency: transitive
+    description:
+      name: shared_preferences_web
+      sha256: a4b5bc37fe1b368bbc81f953197d55e12f49d0296e7e412dfe2d2d77d6929958
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.4"
+  shared_preferences_windows:
+    dependency: transitive
+    description:
+      name: shared_preferences_windows
+      sha256: "5eaf05ae77658d3521d0e993ede1af962d4b326cd2153d312df716dc250f00c9"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.3"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -333,6 +445,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "3.1.3"
+  xdg_directories:
+    dependency: transitive
+    description:
+      name: xdg_directories
+      sha256: ee1505df1426458f7f60aac270645098d318a8b4766d85fde75f76f2e21807d1
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.0"
 sdks:
   dart: ">=2.19.2 <3.0.0"
   flutter: ">=3.0.0"

pubspec.yaml

@@ -38,6 +38,8 @@ dependencies:
 
   path: ^1.8.2
   pdfx: ^2.3.0
+  file_picker: ^5.2.5
+  shared_preferences: ^2.0.17
 
 dev_dependencies:
   flutter_test: