Asset Browser: Improved workflow for asset catalog saving

No longer save asset catalogs on blendfile save. Instead:

- extend the confirmation prompt for unsaved changes to show unsaved
  catalogs.
- In the confirmation prompt, make catalog saving explicit & optional,
  just like we do it for external images. {F10881736}
- In the Asset Browser catalog tree, show an operator icon to save the
  catalogs to disk. It's grayed out if there are no changes to save, or
  if the .blend wasn't saved yet (required to know where to save the
  catalog definitions to). {F10881743}

Much of the work was done by @Severin and reviewed by me, then we
swapped roles.

Reviewed By: Severin

Differential Revision: https://developer.blender.org/D12796

1 files changed, 3 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_asset_library.h b/source/blender/blenkernel/BKE_asset_library.h
index b4674a8d932..ca12fd6f4fb 100644
--- a/source/blender/blenkernel/BKE_asset_library.h
+++ b/source/blender/blenkernel/BKE_asset_library.h
@@ -77,6 +77,9 @@ bool BKE_asset_library_find_suitable_root_path_from_main(
 void BKE_asset_library_refresh_catalog_simplename(struct AssetLibrary *asset_library,
                                                   struct AssetMetaData *asset_data);
 
+/** Return whether any loaded AssetLibrary has unsaved changes to its catalogs. */
+bool BKE_asset_library_has_any_unsaved_catalogs(void);
+
 #ifdef __cplusplus
 }
 #endif