TF-3416 Persist preview EML content when make reload page action

lib/features/email_previewer/email_previewer_view.dart

@@ -3,7 +3,8 @@ import 'package:core/presentation/views/html_viewer/html_content_viewer_on_web_w
 import 'package:core/presentation/views/loading/cupertino_loading_widget.dart';
 import 'package:flutter/material.dart';
 import 'package:get/get.dart';
-import 'package:tmail_ui_user/features/email/domain/state/get_preview_email_content_shared_state.dart';
+import 'package:tmail_ui_user/features/email/domain/state/get_preview_email_eml_content_shared_state.dart';
+import 'package:tmail_ui_user/features/email/domain/state/get_preview_eml_content_in_memory_state.dart';
 import 'package:tmail_ui_user/features/email_previewer/email_previewer_controller.dart';
 import 'package:tmail_ui_user/main/localizations/app_localizations.dart';
 
@@ -16,19 +17,11 @@ class EmailPreviewerView extends GetWidget<EmailPreviewerController> {
     return Scaffold(
       backgroundColor: Colors.white,
       body: Obx(() {
-        final viewState = controller.viewState.value;
+        final viewState = controller.emlContentViewState.value;
         return viewState.fold(
-          (failure) {
-            if (viewState is GetPreviewEmailEMLContentSharedFailure) {
-              return Center(
-                child: Text(AppLocalizations.of(context).previewEmailFromEMLFileFailed),
-              );
-            } else {
-              return const Center(
-                child: CupertinoLoadingWidget(),
-              );
-            }
-          },
+          (failure) => Center(
+            child: Text(AppLocalizations.of(context).previewEmailFromEMLFileFailed),
+          ),
           (success) {
             if (success is GetPreviewEmailEMLContentSharedSuccess) {
               return HtmlContentViewerOnWeb(
@@ -36,6 +29,12 @@ class EmailPreviewerView extends GetWidget<EmailPreviewerController> {
                 heightContent: context.height,
                 contentHtml: success.previewEMLContent,
               );
+            } else if (success is GetPreviewEMLContentInMemorySuccess) {
+              return HtmlContentViewerOnWeb(
+                widthContent: context.width,
+                heightContent: context.height,
+                contentHtml: success.previewEMLContent,
+              );
             } else {
               return const Center(
                 child: CupertinoLoadingWidget(),