[gtk+] notebook: Properly hide drag window

[Benjamin Otte <otte src gnome org>]

commit c162a0cca8c7454f8b695b71cec08160569f26ee
Author: Benjamin Otte <otte redhat com>
Date:   Wed Jan 20 17:20:03 2016 +0100

    notebook: Properly hide drag window
    
    Move code to properly reinsert the tab label to where it belongs.
    The if has the distinction between reparented-to-dnd-window and
    just-changed-the-gdk-window-to-draw-to right there.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=760754

 gtk/gtknotebook.c |   21 ++++++++++-----------
 1 files changed, 10 insertions(+), 11 deletions(-)
---
diff --git a/gtk/gtknotebook.c b/gtk/gtknotebook.c
index 80e6fc9..0664a5a 100644
--- a/gtk/gtknotebook.c
+++ b/gtk/gtknotebook.c
@@ -2973,8 +2973,16 @@ hide_drag_window (GtkNotebook        *notebook,
 {
   GtkWidget *widget = GTK_WIDGET (notebook);
 
-  if (gtk_widget_get_window (page->tab_label) != gtk_widget_get_window (widget) ||
-      !NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page))
+  if (!NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page))
+    {
+      g_object_ref (page->tab_label);
+      gtk_container_remove (GTK_CONTAINER (gtk_widget_get_parent (page->tab_label)), page->tab_label);
+      gtk_css_node_set_parent (gtk_widget_get_css_node (page->tab_label),
+                               gtk_css_gadget_get_node (page->gadget));
+      gtk_widget_set_parent (page->tab_label, GTK_WIDGET (notebook));
+      g_object_unref (page->tab_label);
+    }
+  else if (gtk_widget_get_window (page->tab_label) != gtk_widget_get_window (widget))
     {
       gtk_widget_set_child_visible (page->tab_label, FALSE);
       gtk_widget_unrealize (page->tab_label);
@@ -3034,15 +3042,6 @@ gtk_notebook_stop_reorder (GtkNotebook *notebook)
 
           hide_drag_window (notebook, priv, page);
         }
-      else
-        {
-          g_object_ref (page->tab_label);
-          gtk_container_remove (GTK_CONTAINER (gtk_widget_get_parent (page->tab_label)), page->tab_label);
-          gtk_css_node_set_parent (gtk_widget_get_css_node (page->tab_label),
-                                   gtk_css_gadget_get_node (page->gadget));
-          gtk_widget_set_parent (page->tab_label, GTK_WIDGET (notebook));
-          g_object_unref (page->tab_label);
-        }
 
       priv->operation = DRAG_OPERATION_NONE;