[gtk] Fix teststack

[Matthias Clasen <matthiasc src gnome org>]

commit 09cd6e3b5fc7f46894df20fbf074f72560c54bc7
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Apr 3 15:10:10 2019 +0000

    Fix teststack
    
    This testcase wasn't updated to new GtkStack apis.

 tests/teststack.c | 22 +++++++++-------------
 1 file changed, 9 insertions(+), 13 deletions(-)
---
diff --git a/tests/teststack.c b/tests/teststack.c
index cc75460def..672a12fd12 100644
--- a/tests/teststack.c
+++ b/tests/teststack.c
@@ -35,9 +35,10 @@ static void
 toggle_icon_name (GtkWidget *button, gpointer data)
 {
   gboolean active = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (button));
-  gtk_container_child_set (GTK_CONTAINER (stack), w1,
-                          "icon-name", active ? "edit-find-symbolic" : NULL,
-                          NULL);
+  GtkStackPage *page;
+
+  page = gtk_stack_get_page (GTK_STACK (gtk_widget_get_parent (button)), button);
+  g_object_set (page, "icon-name", active ? "edit-find-symbolic" : NULL, NULL);
 }
 
 static void
@@ -117,6 +118,7 @@ main (gint argc,
   int i;
   GtkTreeIter iter;
   GEnumClass *class;
+  GtkStackPage *page;
 
   gtk_init ();
 
@@ -153,18 +155,12 @@ main (gint argc,
   gtk_text_buffer_set_text (gtk_text_view_get_buffer (GTK_TEXT_VIEW (w1)),
                            "This is a\nTest\nBalh!", -1);
 
-  gtk_container_add_with_properties (GTK_CONTAINER (stack), w1,
-                                    "name", "1",
-                                    "title", "1",
-                                    NULL);
+  gtk_stack_add_titled (GTK_STACK (stack), w1, "1", "1");
 
   w2 = gtk_button_new_with_label ("Gazoooooooooooooooonk");
-  gtk_container_add (GTK_CONTAINER (stack), w2);
-  gtk_container_child_set (GTK_CONTAINER (stack), w2,
-                          "name", "2",
-                          "title", "2",
-                           "needs-attention", TRUE,
-                          NULL);
+  gtk_stack_add_titled (GTK_STACK (stack), w2, "2", "2");
+  page = gtk_stack_get_page (GTK_STACK (stack), w2);
+  g_object_set (page, "needs-attention", TRUE, NULL);
 
 
   scrolled_win = gtk_scrolled_window_new (NULL, NULL);