I added two screenshot from gtk+ git master, with the last change in the GtkFileChooserDialog widget. I think this isn't the end of the changes (see the mockup from mccan in the original bug).
I added two screenshot from gtk+ git master, with the last change in the ialog widget.
GtkFileChooserD
I think this isn't the end of the changes (see the mockup from mccan in the
original bug).