LibOverride: Add initial version of 'resync' operation.

Available from the usual ID submenu in the Outliner context menu.

The goal of this operator is to re-create the override from the linked
data, while preserving existing defined overrides.

This allows to update local opverrides when relations between datablocks
are changed in source library linked data.

Part of T76555.

1 files changed, 8 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_lib_override.h b/source/blender/blenkernel/BKE_lib_override.h
index 5843992b25c..7b10ed4d43c 100644
--- a/source/blender/blenkernel/BKE_lib_override.h
+++ b/source/blender/blenkernel/BKE_lib_override.h
@@ -68,11 +68,19 @@ void BKE_lib_override_library_dependencies_tag(struct Main *bmain,
                                                struct ID *id_root,
                                                const uint tag,
                                                const bool do_create_main_relashionships);
+void BKE_lib_override_library_override_group_tag(struct Main *bmain,
+                                                 struct ID *id_root,
+                                                 const uint tag,
+                                                 const bool do_create_main_relashionships);
 bool BKE_lib_override_library_create(struct Main *bmain,
                                      struct Scene *scene,
                                      struct ViewLayer *view_layer,
                                      struct ID *id_root,
                                      struct ID *id_reference);
+bool BKE_lib_override_library_resync(struct Main *bmain,
+                                     struct Scene *scene,
+                                     struct ViewLayer *view_layer,
+                                     struct ID *id_root);
 
 struct IDOverrideLibraryProperty *BKE_lib_override_library_property_find(
     struct IDOverrideLibrary *override, const char *rna_path);