Backport faf0e944008a8ce3182e11a2ee192b1589c5661a

libnotificationmanager: Return something of the correct type for most roles

from kde-distro-packagers@kde.org:

"we found a regression in Qt 6.11.1 that breaks the job tracker of
notifications, them not closing properly, among other things, which is a
quite high profile issue.

I would therefore suggest if you ship Qt 6.11.1 that you backport this
change for plasma-workspace [1] since Plasma 6.6.6 is still a couple of
weeks away. To our knowledge, Qt 6.11.0 and earlier are not affected. We
do not have a Qt fix yet afaik." -- Kai Uwe

See also https://bugs.kde.org/show_bug.cgi?id=520120

x11/kde-plasma/plasma-workspace/Makefile

@@ -1,5 +1,6 @@
 COMMENT =	various components needed to run a Plasma-based environment
 DISTNAME =	plasma-workspace-${VERSION}
+REVISION =	0
 
 SHARED_LIBS +=  kfontinst                 1.0 # 0.0
 SHARED_LIBS +=  kfontinstui               2.0 # 0.0

x11/kde-plasma/plasma-workspace/patches/patch-libnotificationmanager_jobsmodel_cpp

@@ -0,0 +1,43 @@
+https://invent.kde.org/plasma/plasma-workspace/-/commit/faf0e944008a8ce3182e11a2ee192b1589c5661a
+
+Index: libnotificationmanager/jobsmodel.cpp
+--- libnotificationmanager/jobsmodel.cpp.orig
++++ libnotificationmanager/jobsmodel.cpp
+@@ -145,8 +145,37 @@ QVariant JobsModel::data(const QModelIndex &index, int
+     // There's hardly a reason why it should show up as "unread".
+     case Notifications::ReadRole:
+         return true;
++
++    // Qt doesn't like the model not returning anything, for example
++    // casting it to  "undefined" as a string (when put in a required property string)
++    // blowing up in client code left and right.
++    case Notifications::NotifyRcNameRole:
++    case Notifications::OriginNameRole:
++    case Notifications::DefaultActionLabelRole:
++    case Notifications::ConfigureActionLabelRole:
++    case Notifications::ReplyActionLabelRole:
++    case Notifications::ReplyPlaceholderTextRole:
++    case Notifications::ReplySubmitButtonTextRole:
++    case Notifications::ReplySubmitButtonIconNameRole:
++    case Notifications::CategoryRole:
++        return QString();
++
++    case Notifications::ActionNamesRole:
+     case Notifications::ActionLabelsRole:
+         return QStringList();
++
++    case Notifications::HasDefaultActionRole:
++    case Notifications::ResidentRole:
++    case Notifications::TransientRole:
++    case Notifications::UserActionFeedbackRole:
++    case Notifications::HasReplyActionRole:
++        return false;
++
++    case Notifications::UrlsRole:
++        return QVariant::fromValue(QList<QUrl>());
++
++    case Notifications::UrgencyRole:
++        return Notifications::NormalUrgency;
+     }
+ 
+     return {};