Fix T93274: Assigning asset catalog doesn't mark file as modified

Assigning a catalog to an asset via drag-and-drop in the asset browser
now creates an undo step. Not only does this allow undoing the action,
it also tags the blend file as modified.

Reviewed by: Severin

Differential Revision: https://developer.blender.org/D13370

2 files changed, 4 insertions, 2 deletions

diff --git a/source/blender/editors/include/UI_interface.h b/source/blender/editors/include/UI_interface.h
index 1ed10f37de3..d9f6c89e03b 100644
--- a/source/blender/editors/include/UI_interface.h
+++ b/source/blender/editors/include/UI_interface.h
@@ -2786,7 +2786,9 @@ bool UI_tree_view_item_can_drop(const uiTreeViewItemHandle *item_,
                                 const struct wmDrag *drag,
                                 const char **r_disabled_hint);
 char *UI_tree_view_item_drop_tooltip(const uiTreeViewItemHandle *item, const struct wmDrag *drag);
-bool UI_tree_view_item_drop_handle(uiTreeViewItemHandle *item_, const struct ListBase *drags);
+bool UI_tree_view_item_drop_handle(struct bContext *C,
+                                   uiTreeViewItemHandle *item_,
+                                   const struct ListBase *drags);
 bool UI_tree_view_item_can_rename(const uiTreeViewItemHandle *item_handle);
 void UI_tree_view_item_begin_rename(uiTreeViewItemHandle *item_handle);
 
diff --git a/source/blender/editors/include/UI_tree_view.hh b/source/blender/editors/include/UI_tree_view.hh
index 5acee02a8cc..70d0f3b21b2 100644
--- a/source/blender/editors/include/UI_tree_view.hh
+++ b/source/blender/editors/include/UI_tree_view.hh
@@ -405,7 +405,7 @@ class AbstractTreeViewItemDropController {
    * Execute the logic to apply a drop of the data dragged with \a drag onto/into the item this
    * controller is for.
    */
-  virtual bool on_drop(const wmDrag &drag) = 0;
+  virtual bool on_drop(struct bContext *C, const wmDrag &drag) = 0;
 
   template<class TreeViewType> inline TreeViewType &tree_view() const;
 };