interface: only allow online if world is online

server/src/hardware/interface/interface.cpp

@@ -46,6 +46,7 @@ Interface::Interface(const std::weak_ptr<World>& world, std::string_view _id)
   m_interfaceItems.add(name);
 
   Attributes::addDisplayName(online, DisplayName::Interface::online);
+  Attributes::addEnabled(online, w && contains(w->state.value(), WorldState::Online));
   m_interfaceItems.add(online);
 
   Attributes::addDisplayName(status, DisplayName::Interface::status);
@@ -81,9 +82,11 @@ void Interface::worldEvent(WorldState state, WorldEvent event)
   {
     case WorldEvent::Offline:
       online = false;
+      Attributes::setEnabled(online, false);
       break;
 
     case WorldEvent::Online:
+      Attributes::setEnabled(online, true);
       online = true;
       break;