TF-3643 Thread Detail get emails meta data method

TF-3643 Thread Detail cache email with thread id

TF-3643 Thread Detail view thread detail

TF-3643 Thread Detail [Part 2 fixup] remove ThreadDetailController dependency from MailboxDashboardController

TF-3643 Thread Detail [Part 2 fixup] remove EmailSupervisorController dependency from ThreadDetailController

TF-3643 Thread Detail [Part 2 fixup] move isSearchRunning check into ThreadDetailController

TF-3643 Thread Detail [Part 2 fixup] ensure GetEmailsByIdsInteractor performance

TF-3643 Thread Detail [Part 2 fixup] unit test loadMoreThreadDetailEmails

TF-3643 Thread Detail [Part 2 fixup] unit test getEmailIdsToLoad

TF-3643 Thread Detail [Part 2 fixup] optimize ThreadDetailBinding bindingsDataSource

TF-3643 Thread Detail [Part 2 fixup] optimize getThreadDetailLoadingView

TF-3643 Thread Detail [Part 2 fixup] readd unique ValueKey for HtmlContentViewerOnWebWidget

TF-3643 Thread Detail [Part 2 fixup] unit test initializeThreadDetailEmails

TF-3643 Thread Detail [Part 3 fixup] Update private action button methods

TF-3643 Thread Detail [Part 4 fixup] Collapsed email preview 65 characters max

TF-3643 Thread Detail [Part 4 fixup] Remove personal scripts

TF-3643 Thread Detail move EmailInThreadStatus into PresentationEmail

TF-3643 Thread Detail refactor toggle collapse expand

TF-3643 Thread Detail EmailViewAppBarWidget required parameters

TF-3643 Thread Detail tap avatar toggle expansion

TF-3643 Thread Detail fix cannot open single email

TF-3643 Thread Detail fix open thread first time blank view

TF-3643 Thread Detail fix thread detail UI

TF-3643 Thread Detail fix round bottom view

TF-3643 Thread Detail fix round bottom view

TF-3643 Thread Detail bottom actions depend on current expanded email

TF-3643 Thread Detail hide next previous actions

TF-3643 Thread Detail fix load more show initial loading view

TF-3643 Thread Detail fix cannot view single email

TF-3643 Thread Detail fix bottom place holder not aligned

TF-3643 Thread Detail fix back to search view

TF-3643 Thread Detail fix display 65 character preview collapsed email

TF-3643 Thread Detail fix search not work

TF-3643 Thread Detail fix bottom place holder UI

TF-3643 Thread Detail fix expand view

TF-3643 Thread Detail jump to top of last email view

TF-3643 Thread Detail remove toMe condition of filtering thread

TF-3643 Thread Detail fix sort thread detail

TF-3643 Thread Detail fix assert not work in release

TF-3643 Thread Detail add load more test case <20

TF-3643 Thread Detail remove the use of currentThreadId

TF-3643 Thread Detail remove the use of selectedEmail in SingleEmailController

TF-3643 Thread Detail fix unit test SingleEmailController calendar

TF-3643 Thread Detail disable 2 way scroll control

TF-3643 Thread Detail allow thread to load sent email incase thread only contains 1 email

TF-3643 Thread Detail disable single email page view

TF-3643 Thread Detail update emailsNotLoadedCount name

TF-3643 Thread Detail remove collapsed email char limit

TF-3643 Thread Detail fix CI

TF-3643 Thread Detail unit test handleGetEmailIdsByThreadIdSuccess

TF-3643 Thread Detail make _currentEmailId private

TF-3643 Thread Detail fix search click users

TF-3643 Thread Detail fix scroll jump

TF-3643 Thread Detail fix scroll jump

TF-3643 Thread Detail fix web back action

TF-3643 Thread Detail round bottom actions

TF-3643 Thread Detail fix tablet large empty email

TF-3643 Thread Detail fix email subject selectable

TF-3643 Thread Detail fix email single view with top divider

TF-3643 Thread Detail fix email cache threadId missing

TF-3643 Thread Detail fix filter sent email in thread details

TF-3643 Thread Detail fix select text

TF-3643 Thread Detail fix subject alignment

TF-3643 Thread Detail fix subject alignment

TF-3643 Thread Detail fix tablet large empty email

TF-3643 Thread Detail add nullcheck for _jumpScrollViewToTopOfEmail

TF-3643 Thread Detail decouple ThreadDetailController from SingleEmailController

TF-3643 Thread Detail combine emailIds to emailIdsPresentation

TF-3643 Thread Detail remove currentEmailLoaded obx listener of SingleEmailController

TF-3643 Thread Detail replace threadAction with an email ui action

TF-3643 Thread Detail fix top and bottom bar delay displaying

TF-3643 Thread Detail update ReplyForwardBottomBarAction to PerformEmailActionInThreadDetailAction

TF-3643 Thread Detail use getOwnEmailAddress in ThreadDetailAppBar

TF-3643 Thread Detail add TextOverflow.ellipsis to EmailSubjectWidget

TF-3643 Thread Detail fix round border threadDetailLoadingView

lib/features/thread_detail/presentation/utils/thread_detail_presentation_utils.dart

@@ -0,0 +1,39 @@
+import 'dart:math';
+
+import 'package:flutter/material.dart';
+import 'package:jmap_dart_client/jmap/mail/email/email.dart';
+import 'package:model/email/presentation_email.dart';
+
+class ThreadDetailPresentationUtils {
+  const ThreadDetailPresentationUtils._();
+
+  static const _initialLoadSize = 2;
+  static const _defaultLoadSize = 20;
+
+  @visibleForTesting
+  static get initialLoadSize => _initialLoadSize;
+  @visibleForTesting
+  static get defaultLoadSize => _defaultLoadSize;
+
+  static List<EmailId> getEmailIdsToLoad(
+    Map<EmailId, PresentationEmail?> emailIdsPresentation,
+  ) {
+    final validEmailIdsToLoad = emailIdsPresentation.entries
+      .where((entry) => entry.value == null)
+      .map((entry) => entry.key)
+      .toList();
+
+    if (validEmailIdsToLoad.length == emailIdsPresentation.length) {
+      // No email loaded yet
+      return validEmailIdsToLoad.sublist(
+        0,
+        min(validEmailIdsToLoad.length, _initialLoadSize),
+      );
+    }
+
+    return validEmailIdsToLoad.sublist(
+      validEmailIdsToLoad.length - min(validEmailIdsToLoad.length, _defaultLoadSize),
+      validEmailIdsToLoad.length,
+    );
+  }
+}