DeOps.DeOpsContext.CheckLookup C# (CSharp) Method

        public void CheckLookup()
        {
            // adds or removes the lookup core
            // called from gui thread

            bool runLookup = false;

            Cores.LockReading(delegate()
            {
                foreach (OpCore core in Cores)
                    if (core.User.Settings.OpAccess != AccessType.Secret ||
                        core.User.Settings.GlobalIM)
                        runLookup = true;

                // if public cores exist, sign into global
                if (runLookup && Lookup == null)
                {
                    Lookup = new OpCore(this);

                    FindLocalIP();
                }

                // else destroy global context
                if (!runLookup && Lookup != null)
                {
                    Lookup.Exit();
                    Lookup = null;
                }
            });
        }