Merge pull request #4586 from 21pages/msgbox

not accept dialog show when desktop page dispose

flutter/lib/common.dart

@@ -600,12 +600,16 @@ class OverlayDialogManager {
   int _tagCount = 0;
 
   OverlayEntry? _mobileActionsOverlayEntry;
+  bool _stop = false;
 
   void setOverlayState(OverlayKeyState overlayKeyState) {
     _overlayKeyState = overlayKeyState;
   }
 
-  void dismissAll() {
+  void dismissAll({bool? stop}) {
+    if (stop != null) {
+      _stop = stop;
+    }
     _dialogs.forEach((key, value) {
       value.complete(null);
       BackButtonInterceptor.removeByName(key);
@@ -625,6 +629,7 @@ class OverlayDialogManager {
       String? tag,
       bool useAnimation = true,
       bool forceGlobal = false}) {
+    if (_stop) return Future(() => null);
     final overlayState =
         forceGlobal ? globalKey.currentState?.overlay : _overlayKeyState.state;
 

flutter/lib/desktop/pages/file_manager_page.dart

@@ -97,7 +97,7 @@ class _FileManagerPageState extends State<FileManagerPage>
   void dispose() {
     model.close().whenComplete(() {
       _ffi.close();
-      _ffi.dialogManager.dismissAll();
+      _ffi.dialogManager.dismissAll(stop: true);
       if (!Platform.isLinux) {
         Wakelock.disable();
       }

flutter/lib/desktop/pages/port_forward_page.dart

@@ -70,7 +70,7 @@ class _PortForwardPageState extends State<PortForwardPage>
   @override
   void dispose() {
     _ffi.close();
-    _ffi.dialogManager.dismissAll();
+    _ffi.dialogManager.dismissAll(stop: true);
     if (!Platform.isLinux) {
       Wakelock.disable();
     }

flutter/lib/desktop/pages/remote_page.dart

@@ -220,7 +220,7 @@ class _RemotePageState extends State<RemotePage>
     _rawKeyFocusNode.dispose();
     _ffi.close();
     _timer?.cancel();
-    _ffi.dialogManager.dismissAll();
+    _ffi.dialogManager.dismissAll(stop: true);
     SystemChrome.setEnabledSystemUIMode(SystemUiMode.manual,
         overlays: SystemUiOverlay.values);
     if (!Platform.isLinux) {