Asset Preferences: disallow single file as asset library

Asset libraries should be directories on disk. By manually entering a
file path it was possible to have a single blend file as asset library,
but that was not a designed-for situation, and it doesn't play well
with the asset catalog system.

1 files changed, 7 insertions, 0 deletions

diff --git a/source/blender/makesrna/intern/rna_userdef.c b/source/blender/makesrna/intern/rna_userdef.c
index 32b3be9ee09..4542f8fa1d7 100644
--- a/source/blender/makesrna/intern/rna_userdef.c
+++ b/source/blender/makesrna/intern/rna_userdef.c
@@ -344,6 +344,12 @@ static void rna_userdef_asset_library_name_set(PointerRNA *ptr, const char *valu
   BKE_preferences_asset_library_name_set(&U, library, value);
 }
 
+static void rna_userdef_asset_library_path_set(PointerRNA *ptr, const char *value)
+{
+  bUserAssetLibrary *library = (bUserAssetLibrary *)ptr->data;
+  BKE_preferences_asset_library_path_set(library, value);
+}
+
 static void rna_userdef_script_autoexec_update(Main *UNUSED(bmain),
                                                Scene *UNUSED(scene),
                                                PointerRNA *ptr)
@@ -6092,6 +6098,7 @@ static void rna_def_userdef_filepaths_asset_library(BlenderRNA *brna)
   prop = RNA_def_property(srna, "path", PROP_STRING, PROP_DIRPATH);
   RNA_def_property_ui_text(
       prop, "Path", "Path to a directory with .blend files to use as an asset library");
+  RNA_def_property_string_funcs(prop, NULL, NULL, "rna_userdef_asset_library_path_set");
   RNA_def_property_update(prop, 0, "rna_userdef_update");
 }