TF-2533 Fix composer memory leak when reply and forward

core/lib/presentation/views/html_viewer/html_content_viewer_on_web_widget.dart

@@ -147,6 +147,9 @@ class _HtmlContentViewerOnWebState extends State<HtmlContentViewerOnWeb> {
         window.parent.addEventListener('message', handleMessage, false);
         window.addEventListener('click', handleOnClickLink, true);
         window.addEventListener('load', handleOnLoad);
+        window.addEventListener('beforeunload', (event) => {
+          window.parent.removeEventListener('message', handleMessage, false);
+        });
       
         function handleMessage(e) {
           if (e && e.data && e.data.includes("toIframe:")) {

lib/features/composer/presentation/composer_controller.dart

@@ -218,7 +218,11 @@ class ComposerController extends BaseController {
   void onClose() {
     _initTextEditor = null;
     _textEditorWeb = null;
-    viewState.value = Right(UIClosedState());
+    dispatchState(Right(UIClosedState()));
+    composerArguments.value = null;
+    emailContentsViewState.value = Right(UIClosedState());
+    identitySelected.value = null;
+    listFromIdentities.clear();
     if (PlatformInfo.isMobile) {
       FkUserAgent.release();
     }

lib/features/composer/presentation/controller/rich_text_web_controller.dart

@@ -310,6 +310,7 @@ class RichTextWebController extends BaseRichTextController {
   void onClose() {
     menuParagraphController.dispose();
     menuOrderListController.dispose();
+    editorController.clear();
     super.onClose();
   }
 }

lib/features/composer/presentation/widgets/web/web_editor_widget.dart

@@ -65,15 +65,9 @@ class _WebEditorState extends State<WebEditorWidget> {
   double? dropZoneHeight;
   final ValueNotifier<double> _htmlEditorHeight = ValueNotifier(_defaultHtmlEditorHeight);
   bool _dropListenerRegistered = false;
+  Function(Event)? _dropListener;
+
  
-  void _dropListener(Event event) {
-    if (event is MessageEvent) {
-      if (jsonDecode(event.data)['name'] == HtmlUtils.registerDropListener.name) {
-        _editorController.evaluateJavascriptWeb(
-          HtmlUtils.lineHeight100Percent.name);
-      }
-    }
-  }
 
   @override
   void initState() {
@@ -89,6 +83,13 @@ class _WebEditorState extends State<WebEditorWidget> {
     }
     log('_WebEditorState::initState:dropZoneWidth: $dropZoneWidth | dropZoneHeight: $dropZoneHeight');
 
+    _dropListener = (event) {
+      if (event is MessageEvent) {
+        if (jsonDecode(event.data)['name'] == HtmlUtils.registerDropListener.name) {
+          _editorController.evaluateJavascriptWeb(HtmlUtils.lineHeight100Percent.name);
+        }
+      }
+    };
     window.addEventListener("message", _dropListener);
   }
 
@@ -113,6 +114,7 @@ class _WebEditorState extends State<WebEditorWidget> {
     _editorController.evaluateJavascriptWeb(
       HtmlUtils.unregisterDropListener.name);
     window.removeEventListener("message", _dropListener);
+    _dropListener = null;
     super.dispose();
   }
 

pubspec.lock

@@ -1025,8 +1025,8 @@ packages:
     dependency: "direct main"
     description:
       path: "."
-      ref: email_supported
+      ref: memory_fixed_in_cnb
-      resolved-ref: "96c199b233c5afde583295890ffbd880ea4c7d8c"
+      resolved-ref: "0292fa1b9c8bb018b910c1b8248be231b88a97b6"
       url: "https://github.com/linagora/html-editor-enhanced.git"
     source: git
     version: "2.5.1"

pubspec.yaml

@@ -60,7 +60,7 @@ dependencies:
   html_editor_enhanced:
     git:
       url: https://github.com/linagora/html-editor-enhanced.git
-      ref: email_supported
+      ref: memory_fixed_in_cnb
 
   jmap_dart_client:
     git: