[gtk+] GtkDialog: Warn about lack of transient parents

[Matthias Clasen <matthiasc src gnome org>]

commit c4ec89cf9d296c60513f61aaba88415b8f0fd81f
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri May 2 18:23:58 2014 -0400

    GtkDialog: Warn about lack of transient parents
    
    We want make it mandatory for dialogs to have transient parents,
    eventually. This is a first step in that direction.

 gtk/gtkdialog.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkdialog.c b/gtk/gtkdialog.c
index 73ae618..bf41fb4 100644
--- a/gtk/gtkdialog.c
+++ b/gtk/gtkdialog.c
@@ -793,6 +793,9 @@ gtk_dialog_map (GtkWidget *widget)
   GtkWindow *window = GTK_WINDOW (widget);
   GtkDialog *dialog = GTK_DIALOG (widget);
 
+  if (gtk_window_get_transient_for (window) == NULL)
+    g_warning ("GtkDialog mapped without a transient parent. This is discouraged.");
+
   GTK_WIDGET_CLASS (gtk_dialog_parent_class)->map (widget);
 
   focus = gtk_window_get_focus (window);