[nautilus] list-base: Only calculate preferred action when in a drop

[António Fernandes <antoniof src gnome org>]

commit c70517bcb4b48da0bfa6501dc2d2d2802c0a3576
Author: Corey Berla <corey berla me>
Date:   Wed Jul 6 08:35:52 2022 -0700

    list-base: Only calculate preferred action when in a drop
    
    The begin_loading() function in list-base calculates the preferred
    action for the view every time even in a current drop isn't occuring.
    
    This is wasteful.
    
    Check if the current drop is not NULL before calculating the
    preferred aciton.

 src/nautilus-list-base.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)
---
diff --git a/src/nautilus-list-base.c b/src/nautilus-list-base.c
index 9060283c3..152bb1455 100644
--- a/src/nautilus-list-base.c
+++ b/src/nautilus-list-base.c
@@ -937,9 +937,12 @@ real_begin_loading (NautilusFilesView *files_view)
 
     /* When DnD is used to navigate between directories, the normal callbacks
      * are ignored. Update DnD variables here upon navigating to a directory*/
-    priv->drag_view_action = get_preferred_action (nautilus_files_view_get_directory_as_file (files_view),
-                                                   gtk_drop_target_get_value (priv->view_drop_target));
-    priv->drag_item_action = 0;
+    if (gtk_drop_target_get_current_drop (priv->view_drop_target) != NULL)
+    {
+        priv->drag_view_action = get_preferred_action (nautilus_files_view_get_directory_as_file 
(files_view),
+                                                       gtk_drop_target_get_value (priv->view_drop_target));
+        priv->drag_item_action = 0;
+    }
 }
 
 static void