Subscription peculiarities for MaterialModel explained.

GUI/coregui/mainwindow/AppSvc.cpp

@@ -92,28 +92,17 @@ void AppSvc::this_unsubscribe(ProjectManager* projectManager)
 
 void AppSvc::this_subscribe(MaterialModel* materialModel)
 {
-
-    //! TODO FIXME PANIC Remove after MaterialSvc gone
+    // MaterialModel created first will be subscribed
     if (m_materialModel)
         return;
 
-    if (m_materialModel != nullptr)
-        throw GUIHelpers::Error("AppSvc::projectManager() -> Error. Attempt to subscribe "
-                                "MaterialModel twice.");
-
     m_materialModel = materialModel;
 }
 
 void AppSvc::this_unsubscribe(MaterialModel* materialModel)
 {
-
-    //! TODO FIXME PANIC Remove after MaterialSvc gone
     if (m_materialModel != materialModel)
         return;
 
-    if (m_materialModel != materialModel)
-        throw GUIHelpers::Error("AppSvc::projectManager() -> Error. Attempt to unsubscribe "
-                                "MaterialModel before it was subscribed.");
-
     m_materialModel = nullptr;
 }