[gtk] filechoosernativeportal: stuff the current filter into options

[Matthias Clasen <matthiasc src gnome org>]

commit c7af14dea849455892d00635794d7b384d958940
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 f3ad20053e..e658d70fcd 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));