RegionSelection& operator= (const RegionSelection&);
- void add (RegionView*);
+ bool add (RegionView*);
bool remove (RegionView*);
- bool contains (RegionView*);
void sort_by_position_and_track ();
+ bool contains (RegionView*) const;
+ bool involves (const TimeAxisView&) const;
+
void clear_all();
nframes_t start () const {