From 0f32a2c2aab78b882fff10a6b81ddd271bcb17b0 Mon Sep 17 00:00:00 2001
From: xengineering <me@xengineering.eu>
Date: Tue, 10 Mar 2026 17:53:34 +0100
Subject: Make ConnectionPage a StatefulWidget

This allows to store the fully qualified domain name (FQDN) of the MQTT
broker and display it if the user visits the page again.

The old behaviour was that the text input field was empty.
---
 lib/ui.dart | 31 +++++++++++++++++++++++++++----
 1 file changed, 27 insertions(+), 4 deletions(-)

(limited to 'lib')

diff --git a/lib/ui.dart b/lib/ui.dart
index a191f5f..9603562 100644
--- a/lib/ui.dart
+++ b/lib/ui.dart
@@ -24,9 +24,34 @@ class Sia extends StatelessWidget {
   }
 }
 
-class ConnectionPage extends StatelessWidget {
+class ConnectionPage extends StatefulWidget {
   const ConnectionPage({super.key});
 
+  @override
+  State<ConnectionPage> createState() => _ConnectionPageState();
+}
+
+class _ConnectionPageState extends State<ConnectionPage> {
+  late TextEditingController controller;
+
+  @override
+  void initState() {
+    super.initState();
+
+    final AppState provider = context.read<AppState>();
+    controller = TextEditingController(text: provider.fqdn);
+
+    controller.addListener(() {
+      provider.fqdn = controller.text;
+    });
+  }
+
+  @override
+  void dispose() {
+    controller.dispose();
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
     return Consumer<AppState>(
@@ -36,14 +61,12 @@ class ConnectionPage extends StatelessWidget {
           body: Padding(
             padding: const EdgeInsets.all(16.0),
             child: TextField(
+              controller: controller,
               decoration: const InputDecoration(
                 labelText: "Server name",
                 hintText: "iot.example.org",
                 border: OutlineInputBorder(),
               ),
-              onChanged: (String value) {
-                state.fqdn = value;
-              },
             ),
           ),
           bottomNavigationBar: const ConnectionStatus(),
-- 
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