simple refactor

Signed-off-by: dignow <linlong1265@gmail.com>

flutter/lib/desktop/pages/connection_page.dart

@@ -1,5 +1,6 @@
 // main window right pane
 
+import 'dart:async';
 import 'dart:io';
 
 import 'package:auto_size_text/auto_size_text.dart';
@@ -34,6 +35,8 @@ class _ConnectionPageState extends State<ConnectionPage>
   /// Nested scroll controller
   final _scrollController = ScrollController();
 
+  Timer? _svcStatusTimer;
+
   final RxBool _idInputFocused = false.obs;
   final FocusNode _idFocusNode = FocusNode();
 
@@ -54,7 +57,9 @@ class _ConnectionPageState extends State<ConnectionPage>
         }
       }();
     }
-    stateGlobal.startSvcStatusTimer();
+    _svcStatusTimer = periodic_immediate(Duration(seconds: 1), () async {
+      stateGlobal.updateSvcStatus();
+    });
     _idFocusNode.addListener(() {
       _idInputFocused.value = _idFocusNode.hasFocus;
       // select all to faciliate removing text, just following the behavior of address input of chrome
@@ -67,7 +72,8 @@ class _ConnectionPageState extends State<ConnectionPage>
   @override
   void dispose() {
     _idController.dispose();
-    stateGlobal.cancelSvcStatusTimer();
+    _svcStatusTimer?.cancel();
+    _svcStatusTimer = null;
     windowManager.removeListener(this);
     super.dispose();
   }

flutter/lib/models/state_model.dart

@@ -10,7 +10,6 @@ import '../consts.dart';
 import '../common.dart';
 
 import './platform_model.dart';
-import './user_model.dart';
 
 enum SvcStatus { notReady, connecting, ready }
 
@@ -27,7 +26,6 @@ class StateGlobal {
 
   final svcStatus = SvcStatus.notReady.obs;
   final svcIsUsingPublicServer = true.obs;
-  Timer? _svcStatusTimer;
 
   // Use for desktop -> remote toolbar -> resolution
   final Map<String, Map<int, String?>> _lastResolutionGroupValues = {};
@@ -93,17 +91,6 @@ class StateGlobal {
     }
   }
 
-  startSvcStatusTimer() {
-    _svcStatusTimer = periodic_immediate(Duration(seconds: 1), () async {
-      updateSvcStatus();
-    });
-  }
-
-  cancelSvcStatusTimer() {
-    _svcStatusTimer?.cancel();
-    _svcStatusTimer = null;
-  }
-
   updateSvcStatus() async {
     final status =
         jsonDecode(await bind.mainGetConnectStatus()) as Map<String, dynamic>;