[tepl] File saving: add dialog window to GtkWindowGroup

[Sébastien Wilmet <swilmet src gnome org>]

commit fc98dfa99dae3430aa33944d720acf4f761141a0
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sat Oct 14 15:54:47 2017 +0200

    File saving: add dialog window to GtkWindowGroup

 tepl/tepl-application-window.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/tepl/tepl-application-window.c b/tepl/tepl-application-window.c
index eebf7a2..df463cb 100644
--- a/tepl/tepl-application-window.c
+++ b/tepl/tepl-application-window.c
@@ -320,6 +320,7 @@ save_as_cb (GSimpleAction *save_as_action,
        TeplTab *tab;
        GtkWidget *file_chooser_dialog;
        GtkFileChooser *file_chooser;
+       GtkWindowGroup *window_group;
 
        tab = tepl_tab_group_get_active_tab (TEPL_TAB_GROUP (tepl_window));
        g_return_if_fail (tab != NULL);
@@ -336,6 +337,9 @@ save_as_cb (GSimpleAction *save_as_action,
        /* Prevent tab from being destroyed. */
        gtk_window_set_modal (GTK_WINDOW (file_chooser_dialog), TRUE);
 
+       window_group = tepl_application_window_get_window_group (tepl_window);
+       gtk_window_group_add_window (window_group, GTK_WINDOW (file_chooser_dialog));
+
        file_chooser = GTK_FILE_CHOOSER (file_chooser_dialog);
 
        gtk_file_chooser_set_do_overwrite_confirmation (file_chooser, TRUE);