+void
+Automatable::clear_controls ()
+{
+ _control_connections.drop_connections ();
+ ControlSet::clear_controls ();
+}
+
+bool
+Automatable::find_next_event (double start, double end, Evoral::ControlEvent& next_event, bool only_active) const
+{
+ next_event.when = std::numeric_limits<double>::max();
+
+ if (only_active) {
+ boost::shared_ptr<ControlList> cl = _automated_controls.reader ();
+ for (ControlList::const_iterator ci = cl->begin(); ci != cl->end(); ++ci) {
+ if ((*ci)->automation_playback()) {
+ find_next_ac_event (*ci, start, end, next_event);
+ }
+ }
+ } else {
+ for (Controls::const_iterator li = _controls.begin(); li != _controls.end(); ++li) {
+ boost::shared_ptr<AutomationControl> c
+ = boost::dynamic_pointer_cast<AutomationControl>(li->second);
+ if (c) {
+ find_next_ac_event (c, start, end, next_event);
+ }
+ }
+ }
+ return next_event.when != std::numeric_limits<double>::max();
+}
+
+void
+Automatable::find_next_ac_event (boost::shared_ptr<AutomationControl> c, double start, double end, Evoral::ControlEvent& next_event) const
+{
+ boost::shared_ptr<SlavableAutomationControl> sc
+ = boost::dynamic_pointer_cast<SlavableAutomationControl>(c);
+
+ if (sc) {
+ sc->find_next_event (start, end, next_event);
+ }
+
+ Evoral::ControlList::const_iterator i;
+ boost::shared_ptr<const Evoral::ControlList> alist (c->list());
+ Evoral::ControlEvent cp (start, 0.0f);
+ if (!alist) {
+ return;
+ }
+
+ for (i = lower_bound (alist->begin(), alist->end(), &cp, Evoral::ControlList::time_comparator); i != alist->end() && (*i)->when < end; ++i) {
+ if ((*i)->when > start) {
+ break;
+ }
+ }
+
+ if (i != alist->end() && (*i)->when < end) {
+ if ((*i)->when < next_event.when) {
+ next_event.when = (*i)->when;
+ }
+ }
+}