[glade3] * gladeui/glade-project.c: Applying Marco Diego Aurélio Mesquita's patch to make the project pr

[Tristan Van Berkom <tvb src gnome org>]

commit 2603c2ed2baefcb33b60634fc12218c8488293ab
Author: Tristan Van Berkom <tristan van berkom gmail com>
Date:   Mon Dec 20 17:13:52 2010 +0900

    	* gladeui/glade-project.c: Applying Marco Diego Aurélio Mesquita's patch to
    	  make the project preview only preview toplevels.

 ChangeLog               |    3 +++
 gladeui/glade-project.c |    9 ++++++---
 2 files changed, 9 insertions(+), 3 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index 4b6e888..517146a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -6,6 +6,9 @@
 	  Glade to crash when freeing the block with g_slice_free (bug 637563). Many
 	  big thanks to Benjamin Otte for tracking down the problem.
 
+	* gladeui/glade-project.c: Applying Marco Diego Aurélio Mesquita's patch to
+	  make the project preview only preview toplevels.
+
 2010-12-19  Tristan Van Berkom <tristanvb openismus com>
 
 	* plugins/gtk+/glade-gtk.c: Fix alpha_sort_box_children() to give a consistent
diff --git a/gladeui/glade-project.c b/gladeui/glade-project.c
index 96dd4c6..92593b1 100644
--- a/gladeui/glade-project.c
+++ b/gladeui/glade-project.c
@@ -1931,18 +1931,21 @@ glade_project_preview (GladeProject *project, GladeWidget *gwidget)
 {
 	GladeXmlContext *context;
 	gchar *text;
-	GtkWidget *widget = GTK_WIDGET (gwidget->object);
+	GtkWidget *widget;
 
-	g_return_if_fail (GTK_WIDGET (widget));
 	g_return_if_fail (GLADE_IS_PROJECT (project));
 
 	context = glade_project_write (project);
 
 	text = glade_xml_dump_from_context (context);
 
+	gwidget = glade_widget_get_toplevel (gwidget);
+	if (!GTK_IS_WIDGET (gwidget->object)) return;
+	widget = GTK_WIDGET (gwidget->object);
+
 	glade_project_launch_preview (project, text, widget);
 
-	g_free(text);
+	g_free (text);
 }
 
 /*******************************************************************