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 4fcf1c64c8bd35358eb97dbf61cfc233d101fb5c..93aea79093af941472fb61e4b9b2131abf5facc9 100644 (file)
--- a/gtk2_ardour/playlist_selection.h
+++ b/gtk2_ardour/playlist_selection.h
@@ -27,6 +27,20 @@ namespace ARDOUR {
        class Playlist;
 }
 
-struct PlaylistSelection : std::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__ */