popover: Do not validate the css node on show()

This was a good idea back in GTK3 when popovers were toplevels, but now
they're regular child widgets, so they should behave that way.

Also, with the introduction of the bloom filter, gtk_css_node_validate()
now assumes it's only called on root nodes, so assert that that is the
case.

1 files changed, 2 insertions, 0 deletions

diff --git a/gtk/gtkcssnode.c b/gtk/gtkcssnode.c
index ab52c2bcd3..ebc65a8d43 100644
--- a/gtk/gtkcssnode.c
+++ b/gtk/gtkcssnode.c
@@ -1353,6 +1353,8 @@ gtk_css_node_validate (GtkCssNode *cssnode)
   gint64 timestamp;
   gint64 before = g_get_monotonic_time ();
 
+  g_assert (cssnode->parent == NULL);
+
   timestamp = gtk_css_node_get_timestamp (cssnode);
 
   gtk_css_node_validate_internal (cssnode, &filter, timestamp);