Add FilePicker library and basic code

lib/day_page.dart

@@ -1,7 +1,18 @@
+import 'dart:io';
+
+import 'package:file_picker/file_picker.dart';
 import 'package:flutter/material.dart';
 
-void buttonPushed() {
+Future<void> selectFile() async {
   print("Button Pushed");
+  FilePickerResult? result = await FilePicker.platform.pickFiles();
+
+  if (result != null) {
+    //File file = File(result.files.single.path!);
+    print(result.files.single.path!);
+  } else {
+    // User canceled the picker
+  }
 }
 
 class DayPage extends StatelessWidget {
@@ -14,7 +25,7 @@ class DayPage extends StatelessWidget {
         children: [
           Row(
             children: [
-              TextButton(onPressed: buttonPushed, child: Text("Select Input")),
+              TextButton(onPressed: selectFile, child: Text("Select Input")),
               SizedBox(
                 width: 300,
                 child: TextField(
@@ -27,7 +38,7 @@ class DayPage extends StatelessWidget {
             ],
           ),
           Row(
-            children: [TextButton(onPressed: buttonPushed, child: Text("Run"))],
+            children: [TextButton(onPressed: selectFile, child: Text("Run"))],
           ),
           Expanded(
             child: Row(

macos/Flutter/GeneratedPluginRegistrant.swift

@@ -5,6 +5,8 @@
 import FlutterMacOS
 import Foundation
 
+import file_picker
 
 func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
+  FilePickerPlugin.register(with: registry.registrar(forPlugin: "FilePickerPlugin"))
 }

pubspec.lock

@@ -49,6 +49,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.19.1"
+  cross_file:
+    dependency: transitive
+    description:
+      name: cross_file
+      sha256: "28bb3ae56f117b5aec029d702a90f57d285cd975c3c5c281eaca38dbc47c5937"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.3.5+2"
   cupertino_icons:
     dependency: "direct main"
     description:
@@ -57,6 +65,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.0.8"
+  dbus:
+    dependency: transitive
+    description:
+      name: dbus
+      sha256: d0c98dcd4f5169878b6cf8f6e0a52403a9dff371a3e2f019697accbf6f44a270
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.7.12"
   fake_async:
     dependency: transitive
     description:
@@ -65,6 +81,22 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.3.3"
+  ffi:
+    dependency: transitive
+    description:
+      name: ffi
+      sha256: "6d7fd89431262d8f3125e81b50d3847a091d846eafcd4fdb88dd06f36d705a45"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.0"
+  file_picker:
+    dependency: "direct main"
+    description:
+      name: file_picker
+      sha256: "57d9a1dd5063f85fa3107fb42d1faffda52fdc948cefd5fe5ea85267a5fc7343"
+      url: "https://pub.dev"
+    source: hosted
+    version: "10.3.10"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -78,11 +110,24 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "6.0.0"
+  flutter_plugin_android_lifecycle:
+    dependency: transitive
+    description:
+      name: flutter_plugin_android_lifecycle
+      sha256: ee8068e0e1cd16c4a82714119918efdeed33b3ba7772c54b5d094ab53f9b7fd1
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.33"
   flutter_test:
     dependency: "direct dev"
     description: flutter
     source: sdk
     version: "0.0.0"
+  flutter_web_plugins:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.0"
   leak_tracker:
     dependency: transitive
     description:
@@ -155,6 +200,22 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.9.1"
+  petitparser:
+    dependency: transitive
+    description:
+      name: petitparser
+      sha256: "91bd59303e9f769f108f8df05e371341b15d59e995e6806aefab827b58336675"
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.0.2"
+  plugin_platform_interface:
+    dependency: transitive
+    description:
+      name: plugin_platform_interface
+      sha256: "4820fbfdb9478b1ebae27888254d445073732dae3d6ea81f0b7e06d5dedc3f02"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.8"
   provider:
     dependency: "direct main"
     description:
@@ -232,6 +293,30 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "15.0.2"
+  web:
+    dependency: transitive
+    description:
+      name: web
+      sha256: "868d88a33d8a87b18ffc05f9f030ba328ffefba92d6c127917a2ba740f9cfe4a"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.1"
+  win32:
+    dependency: transitive
+    description:
+      name: win32
+      sha256: d7cb55e04cd34096cd3a79b3330245f54cb96a370a1c27adb3c84b917de8b08e
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.15.0"
+  xml:
+    dependency: transitive
+    description:
+      name: xml
+      sha256: "971043b3a0d3da28727e40ed3e0b5d18b742fa5a68665cca88e74b7876d5e025"
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.6.1"
 sdks:
   dart: ">=3.10.8 <4.0.0"
-  flutter: ">=3.18.0-18.0.pre.54"
+  flutter: ">=3.35.0"

pubspec.yaml

@@ -36,6 +36,7 @@ dependencies:
   cupertino_icons: ^1.0.8
   provider: ^6.1.5+1
   args: ^2.7.0
+  file_picker: ^10.3.10
 
 dev_dependencies:
   flutter_test: