+
+void
+Selection::select_edit_group_regions ()
+{
+ std::set<RegionView*> regions_to_add;
+
+ for (RegionSelection::iterator i = regions.begin(); i != regions.end(); ++i) {
+ vector<RegionView*> e;
+ editor->get_equivalent_regions (*i, e);
+ for (vector<RegionView*>::iterator j = e.begin(); j != e.end(); ++j) {
+ regions_to_add.insert(*j);
+ }
+ }
+
+ for (std::set<RegionView*>::iterator i = regions_to_add.begin(); i != regions_to_add.end(); ++i) {
+ add (*i);
+ }
+}
+
+void
+Selection::set (Marker* m)
+{
+ clear_markers ();
+ add (m);
+}
+
+void
+Selection::toggle (Marker* m)
+{
+ MarkerSelection::iterator i;
+
+ if ((i = find (markers.begin(), markers.end(), m)) == markers.end()) {
+ add (m);
+ } else {
+ remove (m);
+ }
+}
+
+void
+Selection::remove (Marker* m)
+{
+ MarkerSelection::iterator i;
+
+ if ((i = find (markers.begin(), markers.end(), m)) != markers.end()) {
+ markers.erase (i);
+ MarkersChanged();
+ }
+}
+
+void
+Selection::add (Marker* m)
+{
+ if (find (markers.begin(), markers.end(), m) == markers.end()) {
+
+ /* disambiguate which remove() for the compiler */
+
+ void (Selection::*pmf)(Marker*) = &Selection::remove;
+
+ m->GoingAway.connect (bind (mem_fun (*this, pmf), m));
+
+ markers.push_back (m);
+ MarkersChanged();
+ }
+}
+
+void
+Selection::add (const list<Marker*>& m)
+{
+ markers.insert (markers.end(), m.begin(), m.end());
+ MarkersChanged ();
+}
+
+void
+MarkerSelection::range (nframes64_t& s, nframes64_t& e)
+{
+ s = max_frames;
+ e = 0;
+
+ for (MarkerSelection::iterator i = begin(); i != end(); ++i) {
+
+ if ((*i)->position() < s) {
+ s = (*i)->position();
+ }
+
+ if ((*i)->position() > e) {
+ e = (*i)->position();
+ }
+ }
+
+ s = std::min (s, e);
+ e = std::max (s, e);
+}