1 files changed, 56 insertions, 0 deletions
diff --git a/gtk2_ardour/region_selection.h b/gtk2_ardour/region_selection.h
new file mode 100644
index 0000000000..73fabeb0b2
--- /dev/null
+++ b/gtk2_ardour/region_selection.h
@@ -0,0 +1,56 @@
+#ifndef __ardour_gtk_region_selection_h__
+#define __ardour_gtk_region_selection_h__
+
+#include <set>
+#include <list>
+#include <sigc++/signal_system.h>
+#include <ardour/types.h>
+
+using std::list;
+using std::set;
+
+class AudioRegionView;
+
+struct AudioRegionComparator {
+    bool operator() (const AudioRegionView* a, const AudioRegionView* b) const;
+};
+
+class AudioRegionSelection : public set<AudioRegionView*, AudioRegionComparator>, public SigC::Object
+{
+  public:
+        AudioRegionSelection();
+	AudioRegionSelection (const AudioRegionSelection&);
+
+	AudioRegionSelection& operator= (const AudioRegionSelection&);
+
+	void add (AudioRegionView*, bool dosort = true);
+	bool remove (AudioRegionView*);
+	bool contains (AudioRegionView*);
+
+	void clear_all();
+	
+	jack_nframes_t start () const {
+		return _current_start;
+	}
+
+	/* collides with list<>::end */
+
+	jack_nframes_t end_frame () const { 
+		return _current_end;
+	}
+
+	const list<AudioRegionView *> & by_layer() const { return _bylayer; }
+	void  by_position (list<AudioRegionView*>&) const;
+	
+  private:
+	void remove_it (AudioRegionView*);
+
+	void add_to_layer (AudioRegionView *);
+	
+	jack_nframes_t _current_start;
+	jack_nframes_t _current_end;
+
+	list<AudioRegionView *> _bylayer;
+};
+
+#endif /* __ardour_gtk_region_selection_h__ */