listen flutter key event when there's no input monitor permission

Signed-off-by: fufesou <shuanglongchen@yeah.net>

flutter/lib/desktop/pages/desktop_home_page.dart

@@ -14,6 +14,7 @@ import 'package:flutter_hbb/desktop/pages/desktop_tab_page.dart';
 import 'package:flutter_hbb/desktop/widgets/scroll_wrapper.dart';
 import 'package:flutter_hbb/models/platform_model.dart';
 import 'package:flutter_hbb/models/server_model.dart';
+import 'package:flutter_hbb/models/state_model.dart';
 import 'package:flutter_hbb/utils/multi_window_manager.dart';
 import 'package:get/get.dart';
 import 'package:provider/provider.dart';
@@ -498,6 +499,10 @@ class _DesktopHomePageState extends State<DesktopHomePage>
       if (watchIsInputMonitoring) {
         if (bind.mainIsCanInputMonitoring(prompt: false)) {
           watchIsInputMonitoring = false;
+          // Do not notify for now.
+          // Monitoring may not take effect until the process is restarted.
+          // rustDeskWinManager.call(
+          //     WindowType.RemoteDesktop, kWindowDisableGrabKeyboard, '');
           setState(() {});
         }
       }

flutter/lib/desktop/pages/remote_tab_page.dart

@@ -111,6 +111,8 @@ class _ConnectionTabPageState extends State<ConnectionTabPage> {
             forceRelay: args['forceRelay'],
           ),
         ));
+      } else if (call.method == kWindowDisableGrabKeyboard) {
+        stateGlobal.grabKeyboard = false;
       } else if (call.method == "onDestroy") {
         tabController.clear();
       } else if (call.method == kWindowActionRebuild) {

flutter/lib/desktop/widgets/remote_menubar.dart

@@ -650,6 +650,12 @@ class _RemoteMenubarState extends State<RemoteMenubar> {
   }
 
   Widget _buildKeyboard(BuildContext context) {
+    // Do not support peer 1.1.9.
+    if (Platform.isMacOS && stateGlobal.grabKeyboard) {
+      bind.sessionSetKeyboardMode(id: widget.id, value: 'map');
+      return Offstage();
+    }
+
     FfiModel ffiModel = Provider.of<FfiModel>(context);
     if (ffiModel.permissions['keyboard'] == false) {
       return Offstage();