+}
+
+void
+ComboStringOption::clear () {
+ _combo->clear_items();
+}
+
+void
+ComboStringOption::changed () {
+ _set (_combo->get_active_text ());
+}
+
+void
+ComboStringOption::set_sensitive (bool yn) {
+ _combo->set_sensitive (yn);
+}
+
+/*--------------------------*/
+
+/** Construct a BoolComboOption.
+ * @param i id
+ * @param n User-visible name.
+ * @param t Text to give for the variable being true.
+ * @param f Text to give for the variable being false.
+ * @param g Slot to get the variable's value.
+ * @param s Slot to set the variable's value.
+ */
+BoolComboOption::BoolComboOption (
+ string const & i, string const & n, string const & t, string const & f,
+ sigc::slot<bool> g, sigc::slot<bool, bool> s
+ )
+ : Option (i, n)
+ , _get (g)
+ , _set (s)
+{
+ _label = manage (new Label (n + ":"));
+ _label->set_alignment (0, 0.5);
+ _combo = manage (new ComboBoxText);
+
+ /* option 0 is the false option */
+ _combo->append_text (f);
+ /* and option 1 is the true */
+ _combo->append_text (t);
+
+ _combo->signal_changed().connect (sigc::mem_fun (*this, &BoolComboOption::changed));
+}
+
+void
+BoolComboOption::set_state_from_config ()
+{
+ _combo->set_active (_get() ? 1 : 0);
+}
+
+void
+BoolComboOption::add_to_page (OptionEditorPage* p)
+{
+ add_widgets_to_page (p, _label, _combo);
+}
+
+void
+BoolComboOption::changed ()
+{
+ _set (_combo->get_active_row_number () == 0 ? false : true);
+}
+
+void
+BoolComboOption::set_sensitive (bool yn)
+{
+ _combo->set_sensitive (yn);
+}
+
+/*--------------------------*/
+
+FaderOption::FaderOption (string const & i, string const & n, sigc::slot<gain_t> g, sigc::slot<bool, gain_t> s)
+ : Option (i, n)
+ , _db_adjustment (gain_to_slider_position_with_max (1.0, Config->get_max_gain()), 0, 1, 0.01, 0.1)
+ , _get (g)
+ , _set (s)
+{
+ _db_slider = manage (new ArdourWidgets::HSliderController (&_db_adjustment, boost::shared_ptr<PBD::Controllable>(), 220, 18));