X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fpointer-group-interface.cc;h=d7bfc0785dd5d2feb1b835a871c2b497f3315803;hb=88535fe6b73270a04bab0762d96b53c5c3bdeaab;hp=36eac12bca69bbd2f50b87310bd9e94b5e374adf;hpb=25190a4637753e6439c445d2d4fe9323b7945d32;p=lilypond.git

diff --git a/lily/pointer-group-interface.cc b/lily/pointer-group-interface.cc
index 36eac12bca..d7bfc0785d 100644
--- a/lily/pointer-group-interface.cc
+++ b/lily/pointer-group-interface.cc
@@ -1,9 +1,20 @@
 /*
-  pointer-group-interface.cc -- implement Pointer_group_interface
+  This file is part of LilyPond, the GNU music typesetter.
 
-  source file of the GNU LilyPond music typesetter
+  Copyright (C) 2005--2010 Han-Wen Nienhuys <hanwen@xs4all.nl>
 
-  (c) 2005--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  LilyPond is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  LilyPond is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "pointer-group-interface.hh"
@@ -45,6 +56,18 @@ 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 +95,9 @@ 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*>