+#include "ardour/automation_list.h"
+#include "evoral/Parameter.hpp"
+
+class AutomationSelection : public std::list<boost::shared_ptr<ARDOUR::AutomationList> > {
+public:
+ const_iterator
+ get_nth(const Evoral::Parameter& param, size_t nth) const {
+ size_t count = 0;
+ for (const_iterator l = begin(); l != end(); ++l) {
+ if ((*l)->parameter() == param) {
+ if (count++ == nth) {
+ return l;
+ }
+ }
+ }
+ return end();
+ }
+};