diff --git a/src/modules/stream/signal_handler.h b/src/modules/stream/signal_handler.h
new file mode 100644
index 0000000..7c0eee9
--- /dev/null
+++ b/src/modules/stream/signal_handler.h
@@ -0,0 +1,94 @@
+/* ~/godot-projects/streaming_world/src/modules/stream/signal_handler.h */
+#ifndef SIGNAL_HANDLER_H_
+#define SIGNAL_HANDLER_H_
+#include <core/object.h>
+#include "editor_event.h"
+
+#define _GODOT_HANDLER_METHOD(class_name, obj_name, sig_name, event_name,     \
+			      hdecl, hargs, hbind)                            \
+	class class_name : public Object {                                    \
+		GDCLASS(class_name, Object)                                   \
+		obj_name *ob;                                                 \
+                                                                              \
+	public:                                                               \
+		class_name(obj_name *ob)                                      \
+			: Object()                                            \
+			, ob(ob)                                              \
+		{                                                             \
+			ob->connect(#sig_name, this, "handler");              \
+		}                                                             \
+		~class_name()                                                 \
+		{                                                             \
+			ob->disconnect(#sig_name, this, "handler");           \
+		}                                                             \
+                                                                              \
+	protected:                                                            \
+		void handler hdecl                                            \
+		{                                                             \
+			Vector<Variant> args = varray hargs;                  \
+			args.insert(0, ob);                                   \
+			EditorEvent::get_singleton()->event.emit(#event_name, \
+								 args);       \
+		}                                                             \
+		static void _bind_methods()                                   \
+		{                                                             \
+			ClassDB::bind_method(hbind, &class_name::handler);    \
+		}                                                             \
+	};
+#define GODOT_HANDLER_METHOD(class_name, obj_name, sig_name, event_name, \
+			     hdecl, hargs, hbind)                        \
+	_GODOT_HANDLER_METHOD(class_name##__LINE__, obj_name, sig_name,  \
+			      event_name, hdecl, hargs, hbind)
+
+#define _GODOT_HANDLER_EVENT_METHOD(class_name, obj_name, sig_name, hdecl,   \
+				    hargs, hbind)                            \
+	class class_name : public Object {                                   \
+		GDCLASS(class_name, Object)                                  \
+		obj_name *ob;                                                \
+		String event_name;                                           \
+                                                                             \
+	public:                                                              \
+		class_name(obj_name *ob, const String &event_name)           \
+			: Object()                                           \
+			, ob(ob)                                             \
+			, event_name(event_name)                             \
+		{                                                            \
+			Error err;                                           \
+			assert(ob);                                          \
+			err = ob->connect(#sig_name, this, "handler");       \
+			assert(err == OK);                                   \
+		}                                                            \
+		~class_name()                                                \
+		{                                                            \
+			if (ob)                                              \
+				ob->disconnect(#sig_name, this, "handler");  \
+		}                                                            \
+                                                                             \
+	protected:                                                           \
+		void handler hdecl                                           \
+		{                                                            \
+			Vector<Variant> args = varray hargs;                 \
+			args.insert(0, ob);                                  \
+			EditorEvent::get_singleton()->event.emit(event_name, \
+								 args);      \
+		}                                                            \
+		static void _bind_methods()                                  \
+		{                                                            \
+			ClassDB::bind_method(hbind, &class_name::handler);   \
+		}                                                            \
+	};
+#define _GODOT_HANDLER_CONCAT(a, b) a##b
+#define _GODOT_HANDLER_CONCAT2(a, b) _GODOT_HANDLER_CONCAT(a, b)
+#define GODOT_HANDLER_EVENT_METHOD(class_name, obj_name, sig_name, hdecl,    \
+				   hargs, hbind)                             \
+	_GODOT_HANDLER_EVENT_METHOD(_GODOT_HANDLER_CONCAT2(class_name,       \
+							   __LINE__),        \
+				    obj_name, sig_name, hdecl, hargs, hbind) \
+	typedef _GODOT_HANDLER_CONCAT2(class_name, __LINE__) class_name;
+
+GODOT_HANDLER_METHOD(BrushSelectHandler, OptionButton, item_selected,
+		     brush_select, (int id), (id), D_METHOD("handler", "id"))
+GODOT_HANDLER_EVENT_METHOD(OptionButtonHandler, OptionButton, item_selected,
+			   (int id), (id), D_METHOD("handler", "id"))
+
+#endif // SIGNAL_HANDLER_H_
\ No newline at end of file