broulik added a comment.
Have you had a look at the libkworkspace2 stuff? It should have that signal in it and is ready to be made a qml import iirc REPOSITORY R133 KScreenLocker REVISION DETAIL https://phabricator.kde.org/D25486 To: meven, #plasma Cc: broulik, plasma-devel, LeGast00n, The-Feren-OS-Dev, jraleigh, fbampaloukas, GB_2, ragreen, ZrenBot, ngraham, alexeymin, himcesjf, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, ahiemstra, mart