chore: refresh choreographer on change learning settings (#2155)

lib/pages/chat/chat.dart

@@ -615,7 +615,7 @@ class ChatController extends State<ChatPageWithRoom>
     inputFocus.removeListener(_inputFocusListener);
     onFocusSub?.cancel();
     //#Pangea
-    choreographer.stateListener.close();
+    choreographer.stateStream.close();
     choreographer.dispose();
     clearSelectedEvents();
     MatrixState.pAnyState.closeOverlay();

lib/pangea/chat/widgets/chat_floating_action_button.dart

@@ -48,8 +48,7 @@ class ChatFloatingActionButtonState extends State<ChatFloatingActionButton> {
     }
 
     // Rebuild the widget each time there's an update from choreo (i.e., an error).
-    _choreoSub =
-        widget.controller.choreographer.stateListener.stream.listen((_) {
+    _choreoSub = widget.controller.choreographer.stateStream.stream.listen((_) {
       setState(() {});
     });
 

lib/pangea/chat/widgets/chat_view_background.dart

@@ -19,7 +19,7 @@ class ChatViewBackgroundState extends State<ChatViewBackground> {
   @override
   void initState() {
     // Rebuild the widget each time there's an update from choreo
-    _choreoSub = widget.choreographer.stateListener.stream.listen((_) {
+    _choreoSub = widget.choreographer.stateStream.stream.listen((_) {
       setState(() {});
     });
     super.initState();

lib/pangea/chat/widgets/input_bar_wrapper.dart

@@ -25,8 +25,7 @@ class ChatInputRowWrapperState extends State<ChatInputRowWrapper> {
   @override
   void initState() {
     // Rebuild the widget each time there's an update from choreo
-    _choreoSub =
-        widget.controller.choreographer.stateListener.stream.listen((_) {
+    _choreoSub = widget.controller.choreographer.stateStream.stream.listen((_) {
       setState(() {});
     });
     super.initState();

lib/pangea/choreographer/controllers/choreographer.dart

@@ -55,8 +55,10 @@ class Choreographer {
   // last checked by IGC or translation
   String? _lastChecked;
   ChoreoMode choreoMode = ChoreoMode.igc;
-  final StreamController stateListener = StreamController.broadcast();
-  StreamSubscription? trialStream;
+
+  final StreamController stateStream = StreamController.broadcast();
+  StreamSubscription? _trialStream;
+  StreamSubscription? _languageStream;
 
   Choreographer(this.pangeaController, this.chatController) {
     _initialize();
@@ -74,9 +76,20 @@ class Choreographer {
     errorService = ErrorService(this);
     altTranslator = AlternativeTranslator(this);
     _textController.addListener(_onChangeListener);
-    trialStream = pangeaController
+    _trialStream = pangeaController
         .subscriptionController.trialActivationStream.stream
         .listen((_) => _onChangeListener);
+    _languageStream =
+        pangeaController.userController.stateStream.listen((update) {
+      if (update is Map<String, dynamic> &&
+          update['prev_target_lang'] is LanguageModel) {
+        clear();
+      }
+
+      // refresh on any profile update, to account
+      // for changes like enabling autocorrect
+      setState();
+    });
     clear();
   }
 
@@ -560,7 +573,9 @@ class Choreographer {
 
   dispose() {
     _textController.dispose();
-    trialStream?.cancel();
+    _trialStream?.cancel();
+    _languageStream?.cancel();
+    stateStream.close();
     tts.dispose();
   }
 
@@ -617,8 +632,8 @@ class Choreographer {
   bool get editTypeIsKeyboard => EditType.keyboard == _textController.editType;
 
   setState() {
-    if (!stateListener.isClosed) {
-      stateListener.add(0);
+    if (!stateStream.isClosed) {
+      stateStream.add(0);
     }
   }
 

lib/pangea/choreographer/widgets/it_bar.dart

@@ -46,7 +46,7 @@ class ITBarState extends State<ITBar> with SingleTickerProviderStateMixin {
     super.initState();
 
     // Rebuild the widget each time there's an update from choreo.
-    _choreoSub = widget.choreographer.stateListener.stream.listen((_) {
+    _choreoSub = widget.choreographer.stateStream.stream.listen((_) {
       if (itController.willOpen != wasOpen) {
         itController.willOpen ? _controller.forward() : _controller.reverse();
       }

lib/pangea/choreographer/widgets/send_button.dart

@@ -26,8 +26,7 @@ class ChoreographerSendButtonState extends State<ChoreographerSendButton> {
   void initState() {
     // Rebuild the widget each time there's an update from
     // choreo. This keeps the spin up-to-date.
-    _choreoSub =
-        widget.controller.choreographer.stateListener.stream.listen((_) {
+    _choreoSub = widget.controller.choreographer.stateStream.stream.listen((_) {
       setState(() {});
     });
     super.initState();

lib/pangea/choreographer/widgets/start_igc_button.dart

@@ -35,7 +35,7 @@ class StartIGCButtonState extends State<StartIGCButton>
       vsync: this,
       duration: const Duration(seconds: 2),
     );
-    _choreoListener = widget.controller.choreographer.stateListener.stream
+    _choreoListener = widget.controller.choreographer.stateStream.stream
         .listen(_updateSpinnerState);
     super.initState();
   }

lib/pangea/user/controllers/user_controller.dart

@@ -85,10 +85,11 @@ class UserController extends BaseController {
 
     final Profile updatedProfile = update(profile);
     await updatedProfile.saveProfileData(waitForDataInSync: waitForDataInSync);
-
-    if (prevTargetLang != _pangeaController.languageController.userL2) {
-      setState({'prev_target_lang': prevTargetLang});
-    }
+    setState(
+      prevTargetLang != _pangeaController.languageController.userL2
+          ? {'prev_target_lang': prevTargetLang}
+          : null,
+    );
   }
 
   /// A completer for the profile model of a user.

lib/pangea/writing_assistance/writing_assistance_input_row.dart

@@ -41,7 +41,7 @@ class WritingAssistanceInputRowState extends State<WritingAssistanceInputRow> {
   @override
   void initState() {
     // Rebuild the widget each time there's an update from choreo
-    _choreoSub = choreographer.stateListener.stream.listen((_) {
+    _choreoSub = choreographer.stateStream.stream.listen((_) {
       setSuggestions();
     });
     setSuggestions();