+ context_trace->set_colour(new_colour);
+}
+
+void Header::on_signals_changed()
+{
+ const vector< shared_ptr<Trace> > traces(_view.get_traces());
+ BOOST_FOREACH(shared_ptr<Trace> t, traces) {
+ assert(t);
+ connect(t.get(), SIGNAL(text_changed()), this, SLOT(update()));
+ }