+void Layout::add(TrackChain &g)
+{
+ if(track_chains.insert(g))
+ signal_track_chain_added.emit(g);
+}
+
+void Layout::add(Block &b)
+{
+ if(track_chains.insert(b))
+ {
+ b.signal_reserved.connect(sigc::bind<0>(signal_block_reserved, sigc::ref(b)));
+ signal_track_chain_added.emit(b);
+ }
+}
+
+void Layout::add(Sensor &s)
+{
+ if(sensors.insert(s))
+ {
+ s.signal_state_changed.connect(sigc::bind<0>(sigc::mem_fun(this, &Layout::sensor_state_changed), sigc::ref(s)));
+ s.signal_state_changed.connect(sigc::bind<0>(signal_sensor_state_changed, sigc::ref(s)));
+ }
+}
+
+void Layout::add(BeamGate &g)
+{
+ add(static_cast<Object &>(g));
+ add(static_cast<Sensor &>(g));
+}
+