Made ListenerManager instances iterable by adding __getitem__

Author: Ayuto

src/core/modules/listeners/listeners_manager.cpp

@@ -90,3 +90,11 @@ bool CListenerManager::IsRegistered(object oCallback)
 {
 	return m_vecCallables.HasElement(oCallback);
 }
+
+object CListenerManager::__getitem__(unsigned int index)
+{
+	if (index >= (unsigned int) m_vecCallables.Count())
+		BOOST_RAISE_EXCEPTION(PyExc_IndexError, "Index out of range.")
+
+	return m_vecCallables[index];
+}

src/core/modules/listeners/listeners_manager.h

@@ -67,6 +67,7 @@ class CListenerManager
 	void Notify(boost::python::tuple args, dict kwargs);
 	int GetCount();
 	bool IsRegistered(object oCallback);
+	object __getitem__(unsigned int index);
 
 public:
 	CUtlVector<object> m_vecCallables;

src/core/modules/listeners/listeners_wrap.cpp

@@ -106,6 +106,11 @@ void export_listener_managers(scope _listeners)
 			&CListenerManager::IsRegistered,
 			"Return whether or not the given callback is registered."
 		)
+
+		.def("__getitem__",
+			&CListenerManager::__getitem__,
+			"Return the callback at the given index."
+		)
 	;
 
 	_listeners.attr("on_client_active_listener_manager") = object(ptr(GetOnClientActiveListenerManager()));