[glade/wip/support-no-ids] GladeWidget: Added glade_widget_has_prop_refs()

[Tristan Van Berkom <tvb src gnome org>]

commit a784c69aa6da2ac1bb22dc788a7e8bfb951fbf8b
Author: Tristan Van Berkom <tristan upstairslabs com>
Date:   Wed Jan 27 17:32:26 2016 +0100

    GladeWidget: Added glade_widget_has_prop_refs()
    
    Check if there are property references to a widget without duplicating the list.

 gladeui/glade-widget.c |    7 +++++++
 gladeui/glade-widget.h |    1 +
 2 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/gladeui/glade-widget.c b/gladeui/glade-widget.c
index de383f2..a3c2e8a 100644
--- a/gladeui/glade-widget.c
+++ b/gladeui/glade-widget.c
@@ -2189,6 +2189,13 @@ glade_widget_list_prop_refs (GladeWidget *widget)
   return g_list_copy (widget->priv->prop_refs);
 }
 
+gboolean
+glade_widget_has_prop_refs (GladeWidget *widget)
+{
+  g_return_val_if_fail (GLADE_IS_WIDGET (widget), FALSE);
+
+  return widget->priv->prop_refs != NULL;
+}
 
 GladeProperty *
 glade_widget_get_parentless_widget_ref (GladeWidget *widget)
diff --git a/gladeui/glade-widget.h b/gladeui/glade-widget.h
index 4561200..e4d258a 100644
--- a/gladeui/glade-widget.h
+++ b/gladeui/glade-widget.h
@@ -240,6 +240,7 @@ void                    glade_widget_remove_prop_ref        (GladeWidget      *w
                                                             GladeProperty    *property);
 
 GList                  *glade_widget_list_prop_refs         (GladeWidget      *widget);
+gboolean                glade_widget_has_prop_refs          (GladeWidget      *widget);
 
 GladeProperty          *glade_widget_get_parentless_widget_ref (GladeWidget  *widget);