stylecontext: Handle parent in CssNode code

Make CssNode a real tree with a DOM-like API.

1 files changed, 11 insertions, 1 deletions

diff --git a/gtk/gtkcssnodeprivate.h b/gtk/gtkcssnodeprivate.h
index 46aafb01a7..c00c8754da 100644
--- a/gtk/gtkcssnodeprivate.h
+++ b/gtk/gtkcssnodeprivate.h
@@ -37,8 +37,14 @@ struct _GtkCssNode
 {
   GObject object;
 
+  GtkCssNode *parent;
+  GtkCssNode *previous_sibling;
+  GtkCssNode *next_sibling;
+  GtkCssNode *first_child;
+  GtkCssNode *last_child;
+  guint n_children;
+
   GtkCssNodeDeclaration *decl;
-  GtkCssNode            *parent;
   GtkCssStyle           *style;
 };
 
@@ -57,6 +63,10 @@ GType                   gtk_css_node_get_type           (void) G_GNUC_CONST;
 void                    gtk_css_node_set_parent         (GtkCssNode            *cssnode,
                                                          GtkCssNode            *parent);
 GtkCssNode *            gtk_css_node_get_parent         (GtkCssNode            *cssnode);
+GtkCssNode *            gtk_css_node_get_first_child    (GtkCssNode            *cssnode);
+GtkCssNode *            gtk_css_node_get_last_child     (GtkCssNode            *cssnode);
+GtkCssNode *            gtk_css_node_get_previous_sibling(GtkCssNode           *cssnode);
+GtkCssNode *            gtk_css_node_get_next_sibling   (GtkCssNode            *cssnode);
 
 void                    gtk_css_node_set_widget_type    (GtkCssNode            *cssnode,
                                                          GType                  widget_type);