From 38c69d8da10e79847417cf3726f3aac47addd6b6 Mon Sep 17 00:00:00 2001
From: Dominik Meyer <dmeyer@federationhq.de>
Date: Mon, 3 Jul 2023 12:23:04 +0200
Subject: [PATCH] FIX: subscribing when manager is unset

One feature added to EventManager has been disconnecting
a participant at runtime. Unfortunatly, then the
manager of this participant is set to nullptr using
the setManager method. But this method also subscribes to the
shutdown event afterwords. This commit checks if the manager
is nullptr and ignore subscribing in that case.
---
 include/EventManager/Participant.hpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/include/EventManager/Participant.hpp b/include/EventManager/Participant.hpp
index 0ca39e2..894948c 100644
--- a/include/EventManager/Participant.hpp
+++ b/include/EventManager/Participant.hpp
@@ -181,7 +181,13 @@
        *
        * @param manager - the manager to set
        */
-      void setManager(std::shared_ptr<EventManager::Manager> manager) { manager_=manager;_subscribe(EVENT_TYPE_SHUTDOWN);}
+      void setManager(std::shared_ptr<EventManager::Manager> manager) 
+        {   manager_=manager; 
+            if (manager_!=nullptr)
+            {
+              _subscribe(EVENT_TYPE_SHUTDOWN);
+            }
+        }
 
       /**
        * @brief Method to set the unique id of the participant