[gtk+/gtk-3-2] GtkNotebook: emit child-notify::position on page add/removal

[Matthias Clasen <matthiasc src gnome org>]

commit 4743dcd619b63cb12549b22618f9ba0d66d19c11
Author: Claudio Saavedra <csaavedra igalia com>
Date:   Fri Feb 10 16:46:57 2012 +0200

    GtkNotebook: emit child-notify::position on page add/removal
    
    For each page added/removed, notify all the other children changing
    position.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=669116

 gtk/gtknotebook.c |   19 +++++++++++++++++--
 1 files changed, 17 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtknotebook.c b/gtk/gtknotebook.c
index 56a7d46..ecdf3f1 100644
--- a/gtk/gtknotebook.c
+++ b/gtk/gtknotebook.c
@@ -4056,7 +4056,7 @@ gtk_notebook_remove (GtkContainer *container,
   GtkNotebook *notebook = GTK_NOTEBOOK (container);
   GtkNotebookPrivate *priv = notebook->priv;
   GtkNotebookPage *page;
-  GList *children;
+  GList *children, *list;
   gint page_num = 0;
 
   children = priv->children;
@@ -4076,8 +4076,15 @@ gtk_notebook_remove (GtkContainer *container,
 
   g_object_ref (widget);
 
+  list = children->next;
   gtk_notebook_real_remove (notebook, children);
 
+  while (list)
+    {
+      gtk_widget_child_notify (((GtkNotebookPage *)list->data)->child, "position");
+      list = list->next;
+    }
+
   g_signal_emit (notebook,
                  notebook_signals[PAGE_REMOVED],
                  0,
@@ -4525,6 +4532,7 @@ gtk_notebook_real_insert_page (GtkNotebook *notebook,
   GtkNotebookPrivate *priv = notebook->priv;
   GtkNotebookPage *page;
   gint nchildren;
+  GList *list;
 
   gtk_widget_freeze_child_notify (child);
 
@@ -4607,7 +4615,14 @@ gtk_notebook_real_insert_page (GtkNotebook *notebook,
   gtk_widget_child_notify (child, "tab-fill");
   gtk_widget_child_notify (child, "tab-label");
   gtk_widget_child_notify (child, "menu-label");
-  gtk_widget_child_notify (child, "position");
+
+  list = g_list_nth (priv->children, position);
+  while (list)
+    {
+      gtk_widget_child_notify (((GtkNotebookPage *)list->data)->child, "position");
+      list = list->next;
+    }
+
   gtk_widget_thaw_child_notify (child);
 
   /* The page-added handler might have reordered the pages, re-get the position */