Backport 2bc40ad87be072aac2759755df63707d43f8415c.

Thanks to Thomas Martitz for the backport.

Sort object dependancy before saving using a topological
sorting algorithm _glade_tsort() instead of g_list_sort() with
glade_widget_depends() which is not a transitive property.

Closes Bug 709609 "[PATCH] Change way of sorting before writing XML output."
Fixes Bug 711858 "editing glade project results in long CPU usage spikes after upgrading to 3.16 and GTK+3.10"

This backport includes 1401a4bb43a3e56d642c34d5dc7d5ee86217cb3d which reverted
part of 2bc40ad87be072aac2759755df63707d43f8415c.

Conflicts:
	gladeui/Makefile.am
	gladeui/glade-project.c
	gladeui/glade-widget-adaptor.c
	gladeui/glade-widget.c
	plugins/gtk+/glade-gtk-entry.c
	plugins/gtk+/glade-gtk-size-group.c
	plugins/gtk+/glade-gtk-tree-view.c
	plugins/gtk+/glade-gtk-widget.c
	plugins/gtk+/gtk+.xml.in

1 files changed, 25 insertions, 0 deletions

diff --git a/gladeui/glade-property.c b/gladeui/glade-property.c
index 88009c38..0043b75a 100644
--- a/gladeui/glade-property.c
+++ b/gladeui/glade-property.c
@@ -1465,6 +1465,31 @@ glade_property_get_enabled (GladeProperty *property)
 	return property->enabled;
 }
 
+GladePropertyClass *
+glade_property_get_class (GladeProperty *property)
+{
+  g_return_val_if_fail (GLADE_IS_PROPERTY (property), NULL);
+
+  return property->klass;
+}
+
+void
+glade_property_set_widget (GladeProperty      *property,
+			   GladeWidget        *widget)
+{
+	g_return_if_fail (GLADE_IS_PROPERTY (property));
+
+	property->widget = widget;
+}
+
+GladeWidget *
+glade_property_get_widget (GladeProperty      *property)
+{
+	g_return_val_if_fail (GLADE_IS_PROPERTY (property), NULL);
+
+	return property->widget;
+}
+
 
 static gint glade_property_su_stack = 0;