add a C++ lifetime MementoCommand API

2 files changed, 9 insertions, 0 deletions

diff --git a/libs/ardour/ardour/automation_list.h b/libs/ardour/ardour/automation_list.h
index 37a30acd03..f317820b7f 100644
--- a/libs/ardour/ardour/automation_list.h
+++ b/libs/ardour/ardour/automation_list.h
@@ -111,6 +111,8 @@ class LIBARDOUR_API AutomationList : public PBD::StatefulDestructible, public Ev
 	XMLNode& state (bool full);
 	XMLNode& serialize_events ();
 
+	Command* memento_command (XMLNode* before, XMLNode* after);
+
 	bool operator!= (const AutomationList &) const;
 
 	XMLNode* before () { return _before; }
diff --git a/libs/ardour/automation_list.cc b/libs/ardour/automation_list.cc
index bc8ca8e642..636a1bbede 100644
--- a/libs/ardour/automation_list.cc
+++ b/libs/ardour/automation_list.cc
@@ -27,6 +27,7 @@
 #include "ardour/event_type_map.h"
 #include "ardour/parameter_descriptor.h"
 #include "evoral/Curve.hpp"
+#include "pbd/memento_command.h"
 #include "pbd/stacktrace.h"
 #include "pbd/enumwriter.h"
 
@@ -278,6 +279,12 @@ AutomationList::thaw ()
 	}
 }
 
+Command*
+AutomationList::memento_command (XMLNode* before, XMLNode* after)
+{
+	return new MementoCommand<AutomationList> (*this, before, after);
+}
+
 XMLNode&
 AutomationList::get_state ()
 {