[gtk/mcatanzaro/#1492] filechoosernativeportal: stuff the current filter into options

[Michael Catanzaro <mcatanzaro src gnome org>]

commit c0a0bfd38841f8937a32e2ea8abbc2960db772cf
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Tue Jan 15 19:51:00 2019 -0600

    filechoosernativeportal: stuff the current filter into options
    
    We need to tell the portal what filter is supposed to be selected by
    default, or it will just pick the first one, which could be wrong and
    annoying.
    
    This will require updated xdg-desktop-portal and xdg-desktop-portal-gtk
    to work properly.
    
    Fixes #1492

 gtk/gtkfilechoosernativeportal.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/gtk/gtkfilechoosernativeportal.c b/gtk/gtkfilechoosernativeportal.c
index 3a372e7058..07cbb5b4bc 100644
--- a/gtk/gtkfilechoosernativeportal.c
+++ b/gtk/gtkfilechoosernativeportal.c
@@ -332,6 +332,9 @@ show_portal_file_chooser (GtkFileChooserNative *self,
   g_variant_builder_add (&opt_builder, "{sv}", "modal",
                          g_variant_new_boolean (data->modal));
   g_variant_builder_add (&opt_builder, "{sv}", "filters", get_filters (GTK_FILE_CHOOSER (self)));
+  if (self->current_filter)
+    g_variant_builder_add (&opt_builder, "{sv}", "current_filter",
+                           gtk_file_filter_to_gvariant (self->current_filter));
   if (self->current_name)
     g_variant_builder_add (&opt_builder, "{sv}", "current_name",
                            g_variant_new_string (GTK_FILE_CHOOSER_NATIVE (self)->current_name));