SignIn Page to detect enter press to submit

Frontend/patient_manager/lib/pages/signin.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 import 'package:patient_manager/components/myErrorMessage.dart';
 import 'package:patient_manager/components/myPassInput.dart';
 import 'package:patient_manager/components/myTextInput.dart';
@@ -19,6 +20,8 @@ class _SignInState extends State<SignIn> {
   final passwordController = TextEditingController();
   //bool _obscureText = true;
   bool successfulSignIn = false;
+  // focus node to capture keyboard events
+  final FocusNode _focusNode = FocusNode();
 
   //sign user in
   Future<void> signUserIn() async {
@@ -51,7 +54,29 @@ class _SignInState extends State<SignIn> {
 
   @override
   Widget build(BuildContext context) {
-    return Scaffold(
+    return KeyboardListener(
+      focusNode: _focusNode,
+      autofocus: true,
+      onKeyEvent: (event) {
+        if (event is KeyDownEvent &&
+            event.logicalKey == LogicalKeyboardKey.enter) {
+          if (emailController.text.isEmpty || passwordController.text.isEmpty) {
+            showDialog(
+              context: context,
+              builder: (context) {
+                return const MyErrorMessage(errorType: "Input Error");
+              },
+            );
+          } else {
+            signUserIn();
+          }
+
+          if (successfulSignIn) {
+            Navigator.of(context).pushNamed('/homme');
+          }
+        }
+      },
+      child: Scaffold(
         //backgroundColor: Colors.white,
         body: SafeArea(
           child: Center(
@@ -75,8 +100,9 @@ class _SignInState extends State<SignIn> {
                     style: TextStyle(
                       fontSize: 25,
                       fontWeight: FontWeight.bold,
-                    color:
-                        MzanziInnovationHub.of(context)!.theme.secondaryColor(),
+                      color: MzanziInnovationHub.of(context)!
+                          .theme
+                          .secondaryColor(),
                     ),
                   ),
                   //spacer
@@ -110,8 +136,9 @@ class _SignInState extends State<SignIn> {
                     height: 100.0,
                     child: MyButton(
                       buttonText: "Sign In",
-                    buttonColor:
-                        MzanziInnovationHub.of(context)!.theme.secondaryColor(),
+                      buttonColor: MzanziInnovationHub.of(context)!
+                          .theme
+                          .secondaryColor(),
                       textColor:
                           MzanziInnovationHub.of(context)!.theme.primaryColor(),
                       onTap: () {
@@ -164,7 +191,10 @@ class _SignInState extends State<SignIn> {
                               fontWeight: FontWeight.bold,
                             ),
                           ),
-                      )
+                        ),
+                        const SizedBox(
+                          width: 15,
+                        ),
                       ],
                     ),
                   )
@@ -173,6 +203,7 @@ class _SignInState extends State<SignIn> {
             ),
           ),
         ),
+      ),
     );
   }
 }