TF-3911 Support mail keyboard shortcut actions in email detailed view on web

model/lib/extensions/list_presentation_email_extension.dart

@@ -7,6 +7,8 @@ import 'package:model/model.dart';
 extension ListPresentationEmailExtension on List<PresentationEmail> {
   bool get isAllEmailRead => every((email) => email.hasRead);
 
+  bool get isAllEmailUnread => every((email) => !email.hasRead);
+
   bool get isAllEmailStarred => every((email) => email.hasStarred);
 
   bool get isAllSelectionInActive {

model/lib/extensions/presentation_email_extension.dart

@@ -15,6 +15,7 @@ import 'package:model/email/eml_attachment.dart';
 import 'package:model/email/presentation_email.dart';
 import 'package:model/extensions/email_address_extension.dart';
 import 'package:model/extensions/list_email_address_extension.dart';
+import 'package:model/extensions/presentation_mailbox_extension.dart';
 import 'package:model/extensions/utc_date_extension.dart';
 import 'package:model/mailbox/presentation_mailbox.dart';
 import 'package:model/mailbox/select_mode.dart';
@@ -207,4 +208,13 @@ extension PresentationEmailExtension on PresentationEmail {
     keywords?.addAll(newKeywords);
     keywords?.removeWhere((key, value) => !value);
   }
+
+  bool get isDeletePermanentlyEnabled {
+    return mailboxContain?.isTrash ?? mailboxContain?.isSpam ?? false;
+  }
+
+  bool isReplyAllEnabled(String ownerEmailAddress) {
+    final countMailAddress = getCountMailAddressWithoutMe(ownerEmailAddress);
+    return countMailAddress > 1;
+  }
 }