Set up call paths to the connect, disconnect, and merge, split buttons.

game/addons/mesh_data_resource_editor/MDIEd.gd

@@ -139,3 +139,14 @@ func _on_add_triangle_pressed():
 func _on_add_quad_pressed():
 	plugin.add_quad()
 
+func _on_merge_pressed():
+	plugin.merge()
+
+func _on_split_pressed():
+	plugin.split()
+
+func _on_connect_pressed():
+	plugin.connect_action()
+
+func _on_disconnect_pressed():
+	plugin.disconnect_action()

game/addons/mesh_data_resource_editor/MDIEd.tscn

@@ -333,6 +333,10 @@ script = ExtResource( 3 )
 [connection signal="toggled" from="VBoxContainer/Actions/Actions/VBoxContainer2/HBoxContainer3/Face" to="." method="on_selection_mode_face_toggled"]
 [connection signal="pressed" from="VBoxContainer/Operations/Operations/Extrude" to="." method="_on_Extrude_pressed"]
 [connection signal="pressed" from="VBoxContainer/Operations/Operations/UnwrapButton" to="." method="_on_UnwrapButton_pressed"]
+[connection signal="pressed" from="VBoxContainer/Operations/Operations/Merge" to="." method="_on_merge_pressed"]
+[connection signal="pressed" from="VBoxContainer/Operations/Operations/Split" to="." method="_on_split_pressed"]
+[connection signal="pressed" from="VBoxContainer/Operations/Operations/Connect" to="." method="_on_connect_pressed"]
+[connection signal="pressed" from="VBoxContainer/Operations/Operations/Disconnect" to="." method="_on_disconnect_pressed"]
 [connection signal="pressed" from="VBoxContainer/Add/Add/AddBox" to="." method="_on_AddBox_pressed"]
 [connection signal="pressed" from="VBoxContainer/Add/Add/AddTriangle" to="." method="_on_add_triangle_pressed"]
 [connection signal="pressed" from="VBoxContainer/Add/Add/AdQuad" to="." method="_on_add_quad_pressed"]

game/addons/mesh_data_resource_editor/MIDGizmo.gd

@@ -386,3 +386,15 @@ func add_quad() -> void:
 func add_box() -> void:
 	if _mdr:
 		MeshAddUtils.add_box(_mdr)
+
+func merge():
+	pass
+
+func split():
+	pass
+
+func connect_action():
+	pass
+
+func disconnect_action():
+	pass

game/addons/mesh_data_resource_editor/plugin.gd

@@ -181,3 +181,19 @@ func add_triangle() -> void:
 func add_quad() -> void:
 	for g in active_gizmos:
 		g.add_quad()
+
+func merge():
+	for g in active_gizmos:
+		g.merge()
+
+func split():
+	for g in active_gizmos:
+		g.split()
+
+func connect_action():
+	for g in active_gizmos:
+		g.connect_action()
+
+func disconnect_action():
+	for g in active_gizmos:
+		g.disconnect_action()