[gtk+/gtk-style-context: 66/490] GtkCssProvider: Allow empty selector.

[Carlos Garnacho <carlosg src gnome org>]

commit b06e8f7a2dc450ba30edd8730a5e43a80aa358e5
Author: Carlos Garnacho <carlosg gnome org>
Date:   Fri Apr 16 01:44:50 2010 +0200

    GtkCssProvider: Allow empty selector.
    
    universal selector is implied, so things like this work:
    
    :active {}
    :insensitive{}

 gtk/gtkcssprovider.c |   13 ++++++++++++-
 1 files changed, 12 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkcssprovider.c b/gtk/gtkcssprovider.c
index ffb23b8..71d58c7 100644
--- a/gtk/gtkcssprovider.c
+++ b/gtk/gtkcssprovider.c
@@ -177,6 +177,12 @@ selector_path_prepend_glob (SelectorPath *path)
   path->elements = g_slist_prepend (path->elements, elem);
 }
 
+static gint
+selector_path_depth (SelectorPath *path)
+{
+  return g_slist_length (path->elements);
+}
+
 static SelectorStyleInfo *
 selector_style_info_new (SelectorPath *path)
 {
@@ -589,7 +595,8 @@ parse_selector (GtkCssProvider  *css_provider,
 
   *selector_out = NULL;
 
-  if (scanner->token != G_TOKEN_IDENTIFIER)
+  if (scanner->token != ':' &&
+      scanner->token != G_TOKEN_IDENTIFIER)
     return G_TOKEN_IDENTIFIER;
 
   path = selector_path_new ();
@@ -611,6 +618,10 @@ parse_selector (GtkCssProvider  *css_provider,
 
   if (scanner->token == ':')
     {
+      /* Add glob selector if path is empty */
+      if (selector_path_depth (path) == 0)
+        selector_path_prepend_glob (path);
+
       /* Pseudo-class scanning */
       css_provider_push_scope (css_provider, SCOPE_PSEUDO_CLASS);
       g_scanner_get_next_token (scanner);