Split into multiple files

lib/widgets/my_home_page.dart

@@ -0,0 +1,41 @@
+library;
+
+import 'package:flutter/material.dart';
+import 'generator.dart';
+
+class MyHomePage extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      body: Row(
+        children: [
+          SafeArea(
+            child: NavigationRail(
+              extended: true,
+              destinations: [
+                NavigationRailDestination(
+                  icon: Icon(Icons.home),
+                  label: Text('Home'),
+                ),
+                NavigationRailDestination(
+                  icon: Icon(Icons.favorite),
+                  label: Text('Favorites'),
+                ),
+              ],
+              selectedIndex: 0,
+              onDestinationSelected: (value) {
+                print('selected: $value');
+              },
+            ),
+          ),
+          Expanded(
+            child: Container(
+              color: Theme.of(context).colorScheme.primaryContainer,
+              child: GeneratorPage(),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}