[gtk+] gtk: GtkToolbar returns invalid paths when adding tool items

[Stefan Walter <stefw src gnome org>]

commit 385b7a303112848c5e5fa7bdffd31cdd5af4b247
Author: Stef Walter <stefw collabora co uk>
Date:   Wed Oct 19 13:17:18 2011 +0200

    gtk: GtkToolbar returns invalid paths when adding tool items
    
     * Calculate siblings_path on demand, so that it's always correct
       and doesn't get out of sync with the toolbar state.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=662177

 gtk/gtktoolbar.c |   53 +++++++++++++++++++----------------------------------
 1 files changed, 19 insertions(+), 34 deletions(-)
---
diff --git a/gtk/gtktoolbar.c b/gtk/gtktoolbar.c
index ba6ccb5..2bd9be7 100644
--- a/gtk/gtktoolbar.c
+++ b/gtk/gtktoolbar.c
@@ -121,8 +121,6 @@ struct _GtkToolbarPrivate
 
   GTimer          *timer;
 
-  GtkWidgetPath   *sibling_path;
-
   gulong           settings_connection;
 
   gint             idle_id;
@@ -3163,9 +3161,6 @@ gtk_toolbar_finalize (GObject *object)
   GtkToolbar *toolbar = GTK_TOOLBAR (object);
   GtkToolbarPrivate *priv = toolbar->priv;
 
-  if (priv->sibling_path != NULL)
-    gtk_widget_path_unref (priv->sibling_path);
-
   g_list_free_full (priv->content, (GDestroyNotify)toolbar_content_free);
 
   g_timer_destroy (priv->timer);
@@ -3308,7 +3303,7 @@ toolbar_content_new_tool_item (GtkToolbar  *toolbar,
   content->is_placeholder = is_placeholder;
 
   priv->content = g_list_insert (priv->content, content, pos);
-  
+
   gtk_widget_set_parent (GTK_WIDGET (item), GTK_WIDGET (toolbar));
   gtk_toolbar_invalidate_order (toolbar);
 
@@ -3938,37 +3933,34 @@ gtk_toolbar_get_path_for_child (GtkContainer *container,
   GtkWidgetPath *path;
   GtkToolbar *toolbar;
   GtkToolbarPrivate *priv;
+  GtkWidgetPath *sibling_path;
   gint vis_index;
+  GList *children;
 
   toolbar = GTK_TOOLBAR (container);
   priv = toolbar->priv;
 
-  if (priv->sibling_path == NULL)
-    {
-      GList *children;
-
-      /* build a path for all the visible children;
-       * get_children works in visible order
-       */
-      priv->sibling_path = gtk_widget_path_new ();
-      children = _gtk_container_get_all_children (container);
+  /* build a path for all the visible children;
+   * get_children works in visible order
+   */
+  sibling_path = gtk_widget_path_new ();
+  children = _gtk_container_get_all_children (container);
 
-      if (priv->orientation != GTK_ORIENTATION_HORIZONTAL ||
-          gtk_widget_get_direction (GTK_WIDGET (toolbar)) != GTK_TEXT_DIR_RTL)
-        children = g_list_reverse (children);
+  if (priv->orientation != GTK_ORIENTATION_HORIZONTAL ||
+      gtk_widget_get_direction (GTK_WIDGET (toolbar)) != GTK_TEXT_DIR_RTL)
+    children = g_list_reverse (children);
 
-      g_list_foreach (children, add_widget_to_path, priv->sibling_path);
-      g_list_free (children);
-    }
+  g_list_foreach (children, add_widget_to_path, sibling_path);
+  g_list_free (children);
 
   path = gtk_widget_path_copy (gtk_widget_get_path (GTK_WIDGET (container)));
   if (gtk_widget_get_visible (child))
     {
       vis_index = gtk_toolbar_get_visible_position (toolbar, child);
 
-      if (vis_index < gtk_widget_path_length (priv->sibling_path))
+      if (vis_index < gtk_widget_path_length (sibling_path))
         gtk_widget_path_append_with_siblings (path,
-                                              priv->sibling_path,
+                                              sibling_path,
                                               vis_index);
       else
         gtk_widget_path_append_for_widget (path, child);
@@ -3976,23 +3968,16 @@ gtk_toolbar_get_path_for_child (GtkContainer *container,
   else
     gtk_widget_path_append_for_widget (path, child);
 
+  gtk_widget_path_unref (sibling_path);
   return path;
 }
 
 static void
 gtk_toolbar_invalidate_order (GtkToolbar *toolbar)
 {
-  GtkToolbarPrivate *priv = toolbar->priv;
-
-  if (priv->sibling_path != NULL)
-    {
-      gtk_widget_path_unref (priv->sibling_path);
-      priv->sibling_path = NULL;
-
-      gtk_container_forall (GTK_CONTAINER (toolbar),
-                            (GtkCallback) gtk_widget_reset_style,
-                            NULL);
-    }
+  gtk_container_forall (GTK_CONTAINER (toolbar),
+                        (GtkCallback) gtk_widget_reset_style,
+                        NULL);
 }
 
 static void