fpb: Implement adapter availability

1 files changed, 13 insertions, 0 deletions

diff --git a/lib/control/flutter_blue_plus_scanner_controller.dart b/lib/control/flutter_blue_plus_scanner_controller.dart
index a7f34b6..1c93cf6 100644
--- a/lib/control/flutter_blue_plus_scanner_controller.dart
+++ b/lib/control/flutter_blue_plus_scanner_controller.dart
@@ -24,6 +24,18 @@ import 'package:logger/logger.dart';
 var logger = Logger();
 
 class FlutterBluePlusScannerController extends ScannerControllerImpl {
+  late final StreamSubscription<BluetoothAdapterState> _availSubs;
+
+  FlutterBluePlusScannerController() {
+    _availSubs = FlutterBluePlus.adapterState.listen(
+      (d) => super.setAvailability(
+        d == BluetoothAdapterState.on
+            ? ScanAvailability.available
+            : ScanAvailability.unavailable,
+      ),
+    );
+  }
+
   @override
   Future<void> startScan({
     Duration timeout = const Duration(seconds: 5),
@@ -66,6 +78,7 @@ class FlutterBluePlusScannerController extends ScannerControllerImpl {
   @override
   void dispose() {
     stopScan().ignore();
+    _availSubs.cancel().ignore();
     super.dispose();
   }
 }