[gtk+] inspector: Do not show transient nodes

[Benjamin Otte <otte src gnome org>]

commit 7cdfee71da41d4ed3c6e81b2695e4bb932e9cd6c
Author: Benjamin Otte <otte redhat com>
Date:   Mon Nov 2 20:25:09 2015 +0100

    inspector: Do not show transient nodes
    
    This is kind of a hack the way it's implemented, but it's necessary
    for performance to ignore transient nodes as they get created all the
    time (via gtk_style_context_save()) and invalidate the whole treeview.
    And that causes resizes and redrawing of the treeview and performance of
    the inspector would go down the drain now that we display a larger part
    of the node tree.

 gtk/inspector/gtktreemodelcssnode.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/gtk/inspector/gtktreemodelcssnode.c b/gtk/inspector/gtktreemodelcssnode.c
index 196335e..ee55211 100644
--- a/gtk/inspector/gtktreemodelcssnode.c
+++ b/gtk/inspector/gtktreemodelcssnode.c
@@ -18,6 +18,7 @@
 #include "config.h"
 
 #include "gtktreemodelcssnode.h"
+#include "gtk/gtkcsstransientnodeprivate.h"
 
 struct _GtkTreeModelCssNodePrivate
 {
@@ -471,6 +472,9 @@ gtk_tree_model_css_node_connect_node (GtkTreeModelCssNode *model,
 {
   GtkCssNode *child;
 
+  if (GTK_IS_CSS_TRANSIENT_NODE (node))
+    return;
+
   g_object_ref (node);
 
   g_signal_connect_after (node, "node-added", G_CALLBACK (child_added_cb), model);
@@ -520,6 +524,9 @@ gtk_tree_model_css_node_disconnect_node (GtkTreeModelCssNode *model,
 {
   GtkCssNode *child;
 
+  if (GTK_IS_CSS_TRANSIENT_NODE (node))
+    return;
+
   g_signal_handlers_disconnect_by_func (node, G_CALLBACK (child_added_cb), model);
   g_signal_handlers_disconnect_by_func (node, G_CALLBACK (child_removed_cb), model);
   g_signal_handlers_disconnect_by_func (node, G_CALLBACK (notify_cb), model);