Update codec-quality display when ExportFormat changes

[ardour.git] / gtk2_ardour / playlist_selection.h

diff --git a/gtk2_ardour/playlist_selection.h b/gtk2_ardour/playlist_selection.h
index 813f8a92111a5484ba7220d19e388d297b50ffe5..93aea79093af941472fb61e4b9b2131abf5facc9 100644 (file)
--- a/gtk2_ardour/playlist_selection.h
+++ b/gtk2_ardour/playlist_selection.h
@@ -1,3 +1,22 @@
+/*
+    Copyright (C) 2000-2007 Paul Davis
+
+    This program 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 2 of the License, or
+    (at your option) any later version.
+
+    This program 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 this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
 #ifndef __ardour_gtk_playlist_selection_h__
 #define __ardour_gtk_playlist_selection_h__
 
@@ -8,6 +27,20 @@ namespace ARDOUR {
        class Playlist;
 }
 
-struct PlaylistSelection : list<boost::shared_ptr<ARDOUR::Playlist> > {};
+struct PlaylistSelection : std::list<boost::shared_ptr<ARDOUR::Playlist> > {
+public:
+       const_iterator
+       get_nth(ARDOUR::DataType type, size_t nth) const {
+               size_t count = 0;
+               for (const_iterator l = begin(); l != end(); ++l) {
+                       if ((*l)->data_type() == type) {
+                               if (count++ == nth) {
+                                       return l;
+                               }
+                       }
+               }
+               return end();
+       }
+};
 
 #endif /* __ardour_gtk_playlist_selection_h__ */