X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fpointer-group-interface.cc;h=537bc4b964f12d533bb3bfc5527adbc35b761b1f;hb=5b4b0d6e9a197e8f9eb085b7c2ad78b8be3e5cfc;hp=36eac12bca69bbd2f50b87310bd9e94b5e374adf;hpb=9e69cb84d6ee5b0a861cd97869b10e3bdf0c833c;p=lilypond.git

diff --git a/lily/pointer-group-interface.cc b/lily/pointer-group-interface.cc
index 36eac12bca..537bc4b964 100644
--- a/lily/pointer-group-interface.cc
+++ b/lily/pointer-group-interface.cc
@@ -3,7 +3,7 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c) 2005--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  (c) 2005--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
 */
 
 #include "pointer-group-interface.hh"
@@ -45,6 +45,18 @@ Pointer_group_interface::get_grob_array (Grob *me, SCM sym)
   return arr;
 }
 
+Grob *
+Pointer_group_interface::find_grob (Grob *me, SCM sym, bool (*pred) (Grob*))
+{
+  Grob_array *arr = get_grob_array (me, sym);
+
+  for (vsize i = 0; i < arr->size (); i++)
+    if (pred (arr->grob (i)))
+      return arr->grob (i);
+
+  return 0;
+}
+
 void
 Pointer_group_interface::add_grob (Grob *me, SCM sym, Grob *p)
 {
@@ -72,7 +84,9 @@ ly_scm2link_array (SCM x)
 vector<Grob*> const &
 internal_extract_grob_array (Grob const *elt, SCM symbol)
 {
-  return ly_scm2link_array (elt->internal_get_object (symbol));
+  return elt
+    ? ly_scm2link_array (elt->internal_get_object (symbol))
+    : empty_array;
 }
 
 vector<Item*>