[seahorse] Replace GtkFileChooserDialog with GtkFileChooserNative

[Niels De Graef <nielsdg src gnome org>]

commit d98ca615f995691ff914838be694943ee8fcb036
Author: Niels De Graef <nielsdegraef gmail com>
Date:   Mon Jan 6 00:25:45 2020 +0100

    Replace GtkFileChooserDialog with GtkFileChooserNative
    
    It's better for our Flatpak and makes non-GNOME users have a more
    integrated interface.

 common/exportable.vala     | 7 ++-----
 pkcs11/pkcs11-request.vala | 6 ++----
 src/key-manager.vala       | 9 +++------
 3 files changed, 7 insertions(+), 15 deletions(-)
---
diff --git a/common/exportable.vala b/common/exportable.vala
index e425a18c..8ed2db46 100644
--- a/common/exportable.vala
+++ b/common/exportable.vala
@@ -187,12 +187,9 @@ public interface Exportable : GLib.Object {
                                  ref string? directory,
                                  out GLib.File chosen_file,
                                  out Exporter chosen_exporter) {
-               var chooser = new Gtk.FileChooserDialog(null, parent, Gtk.FileChooserAction.SAVE,
-                                                       _("_Cancel"), Gtk.ResponseType.CANCEL,
-                                                       _("Export"), Gtk.ResponseType.ACCEPT,
-                                                       null);
+               var chooser = new Gtk.FileChooserNative(null, parent, Gtk.FileChooserAction.SAVE,
+                                                       _("Export"), _("_Cancel"));
 
-               chooser.set_default_response(Gtk.ResponseType.ACCEPT);
                chooser.set_local_only(false);
                chooser.set_do_overwrite_confirmation(true);
 
diff --git a/pkcs11/pkcs11-request.vala b/pkcs11/pkcs11-request.vala
index 304a2219..688acd4d 100644
--- a/pkcs11/pkcs11-request.vala
+++ b/pkcs11/pkcs11-request.vala
@@ -101,12 +101,10 @@ public class Request : Gtk.Dialog {
 
     private void save_certificate_request(Gcr.CertificateRequest req,
                                           Gtk.Window? parent) {
-        var chooser = new Gtk.FileChooserDialog(_("Save certificate request"),
+        var chooser = new Gtk.FileChooserNative(_("Save certificate request"),
                                                 parent, Gtk.FileChooserAction.SAVE,
-                                                _("_Cancel"), Gtk.ResponseType.CANCEL,
-                                                _("_Save"), Gtk.ResponseType.ACCEPT);
+                                                _("_Save"), _("_Cancel"));
 
-               chooser.set_default_response(Gtk.ResponseType.ACCEPT);
                chooser.set_local_only(false);
 
                var der_filter = new Gtk.FileFilter();
diff --git a/src/key-manager.vala b/src/key-manager.vala
index cc19efca..a900a67d 100644
--- a/src/key-manager.vala
+++ b/src/key-manager.vala
@@ -247,14 +247,11 @@ public class Seahorse.KeyManager : Catalog {
     }
 
     private void on_import_file(SimpleAction action, GLib.Variant? parameter) {
-        Gtk.FileChooserDialog dialog =
-            new Gtk.FileChooserDialog(_("Import Key"), this,
+        Gtk.FileChooserNative dialog =
+            new Gtk.FileChooserNative(_("Import Key"), this,
                                       Gtk.FileChooserAction.OPEN,
-                                      _("_Cancel"), Gtk.ResponseType.CANCEL,
-                                      _("_Open"), Gtk.ResponseType.ACCEPT,
-                                      null);
+                                      _("_Open"), _("_Cancel"));
 
-        dialog.set_default_response(Gtk.ResponseType.ACCEPT);
         dialog.set_local_only(false);
 
         // TODO: This should come from libgcr somehow