move all (G)UI related configuration parameters into UIConfiguration, not RCConfiguration
[ardour.git] / gtk2_ardour / mixer_ui.cc
index e2c9932a407a6e620e563a8c89f51f6b48677a84..e20f78a61b6424804d7c5d9fe9f959ac97d6452e 100644 (file)
 #include <gtkmm/accelmap.h>
 
 #include "pbd/convert.h"
-#include "pbd/stacktrace.h"
-#include <glibmm/thread.h>
+#include "pbd/unwind.h"
+
+#include <glibmm/threads.h>
 
 #include <gtkmm2ext/gtk_ui.h>
 #include <gtkmm2ext/utils.h>
 #include <gtkmm2ext/tearoff.h>
 #include <gtkmm2ext/window_title.h>
 
-#include "ardour/audio_track.h"
+#include "ardour/debug.h"
+#include "ardour/midi_track.h"
 #include "ardour/plugin_manager.h"
 #include "ardour/route_group.h"
+#include "ardour/route_sorters.h"
 #include "ardour/session.h"
-#include "ardour/session_route.h"
 
 #include "keyboard.h"
 #include "mixer_ui.h"
 #include "mixer_strip.h"
 #include "monitor_section.h"
 #include "plugin_selector.h"
+#include "public_editor.h"
 #include "ardour_ui.h"
 #include "prompter.h"
 #include "utils.h"
+#include "route_sorter.h"
 #include "actions.h"
 #include "gui_thread.h"
 #include "mixer_group_tabs.h"
@@ -57,6 +61,7 @@
 #include "i18n.h"
 
 using namespace ARDOUR;
+using namespace ARDOUR_UI_UTILS;
 using namespace PBD;
 using namespace Gtk;
 using namespace Glib;
@@ -64,22 +69,44 @@ using namespace Gtkmm2ext;
 using namespace std;
 
 using PBD::atoi;
+using PBD::Unwinder;
 
-Mixer_UI::Mixer_UI ()
-       : Window (Gtk::WINDOW_TOPLEVEL)
+Mixer_UI* Mixer_UI::_instance = 0;
+
+Mixer_UI*
+Mixer_UI::instance () 
 {
-       _strip_width = Config->get_default_narrow_ms() ? Narrow : Wide;
-       track_menu = 0;
-        _monitor_section = 0;
-       no_track_list_redisplay = false;
-       in_group_row_change = false;
-       _visible = false;
-       strip_redisplay_does_not_reset_order_keys = false;
-       strip_redisplay_does_not_sync_order_keys = false;
-       ignore_sync = false;
+       if (!_instance) {
+               _instance  = new Mixer_UI;
+       } 
 
-       Route::SyncOrderKeys.connect (*this, invalidator (*this), ui_bind (&Mixer_UI::sync_order_keys, this, _1), gui_context());
+       return _instance;
+}
 
+Mixer_UI::Mixer_UI ()
+       : Window (Gtk::WINDOW_TOPLEVEL)
+       , VisibilityTracker (*((Gtk::Window*) this))
+       , _visible (false)
+       , no_track_list_redisplay (false)
+       , in_group_row_change (false)
+       , track_menu (0)
+       , _monitor_section (0)
+       , _strip_width (ARDOUR_UI::config()->get_default_narrow_ms() ? Narrow : Wide)
+       , ignore_reorder (false)
+        , _in_group_rebuild_or_clear (false)
+        , _route_deletion_in_progress (false)
+       , _following_editor_selection (false)
+       , _maximised (false)
+{
+       /* allow this window to become the key focus window */
+       set_flags (CAN_FOCUS);
+
+       Route::SyncOrderKeys.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::sync_treeview_from_order_keys, this), gui_context());
+
+       scroller.set_can_default (true);
+       set_default (scroller);
+
+       scroller_base.set_flags (Gtk::CAN_FOCUS);
        scroller_base.add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
        scroller_base.set_name ("MixerWindow");
        scroller_base.signal_button_release_event().connect (sigc::mem_fun(*this, &Mixer_UI::strip_scroller_button_release));
@@ -93,7 +120,7 @@ Mixer_UI::Mixer_UI ()
        b->show_all ();
 
        scroller.add (*b);
-       scroller.set_policy (Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC);
+       scroller.set_policy (Gtk::POLICY_ALWAYS, Gtk::POLICY_AUTOMATIC);
 
        setup_track_display ();
 
@@ -105,7 +132,7 @@ Mixer_UI::Mixer_UI ()
        group_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
        group_display.get_column (0)->set_expand(true);
        group_display.get_column (1)->set_expand(false);
-       group_display.set_name ("MixerGroupList");
+       group_display.set_name ("EditGroupList");
        group_display.get_selection()->set_mode (Gtk::SELECTION_SINGLE);
        group_display.set_reorderable (true);
        group_display.set_headers_visible (true);
@@ -173,8 +200,8 @@ Mixer_UI::Mixer_UI ()
 #else
        global_hpacker.pack_start (out_packer, false, false, 12);
 #endif
-       list_hpane.add1(list_vpacker);
-       list_hpane.add2(global_hpacker);
+       list_hpane.pack1(list_vpacker, true, true);
+       list_hpane.pack2(global_hpacker, true, false);
 
        rhs_pane1.signal_size_allocate().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::pane_allocation_handler),
                                                        static_cast<Gtk::Paned*> (&rhs_pane1)));
@@ -186,21 +213,15 @@ Mixer_UI::Mixer_UI ()
        add (global_vpacker);
        set_name ("MixerWindow");
 
-       WindowTitle title(Glib::get_application_name());
-       title += _("Mixer");
-       set_title (title.get_string());
+       update_title ();
 
        set_wmclass (X_("ardour_mixer"), PROGRAM_NAME);
 
-       add_accel_group (ActionManager::ui_manager->get_accel_group());
-
        signal_delete_event().connect (sigc::mem_fun (*this, &Mixer_UI::hide_window));
        add_events (Gdk::KEY_PRESS_MASK|Gdk::KEY_RELEASE_MASK);
 
        signal_configure_event().connect (sigc::mem_fun (*ARDOUR_UI::instance(), &ARDOUR_UI::configure_handler));
 
-       _selection.RoutesChanged.connect (sigc::mem_fun(*this, &Mixer_UI::follow_strip_selection));
-
        route_group_display_button_box->show();
        route_group_add_button->show();
        route_group_remove_button->show();
@@ -223,23 +244,27 @@ Mixer_UI::Mixer_UI ()
        list_hpane.show();
        group_display.show();
 
-       auto_rebinding = FALSE;
-
-       _in_group_rebuild = false;
-
-       MixerStrip::CatchDeletion.connect (*this, invalidator (*this), ui_bind (&Mixer_UI::remove_strip, this, _1), gui_context());
-
-        MonitorSection::setup_knob_images ();
+       MixerStrip::CatchDeletion.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::remove_strip, this, _1), gui_context());
 
 #ifndef DEFER_PLUGIN_SELECTOR_LOAD
-       _plugin_selector = new PluginSelector (PluginManager::the_manager ());
+       _plugin_selector = new PluginSelector (PluginManager::instance ());
 #endif
 }
 
 Mixer_UI::~Mixer_UI ()
 {
+       if (_monitor_section) {
+               delete _monitor_section;
+       }
 }
 
+void
+Mixer_UI::track_editor_selection ()
+{
+       PublicEditor::instance().get_selection().TracksChanged.connect (sigc::mem_fun (*this, &Mixer_UI::follow_editor_selection));
+}
+
+
 void
 Mixer_UI::ensure_float (Window& win)
 {
@@ -265,8 +290,14 @@ Mixer_UI::show_window ()
                for (ri = rows.begin(); ri != rows.end(); ++ri) {
                        ms = (*ri)[track_columns.strip];
                        ms->set_width_enum (ms->get_width_enum (), ms->width_owner());
+                       /* Fix visibility of mixer strip stuff */
+                       ms->parameter_changed (X_("mixer-element-visibility"));
                }
        }
+       
+       /* force focus into main area */
+       scroller_base.grab_focus ();
+
        _visible = true;
 }
 
@@ -281,76 +312,120 @@ Mixer_UI::hide_window (GdkEventAny *ev)
 
 
 void
-Mixer_UI::add_strip (RouteList& routes)
+Mixer_UI::add_strips (RouteList& routes)
 {
-       ENSURE_GUI_THREAD (*this, &Mixer_UI::add_strip, routes)
-
-       MixerStrip* strip;
-
-       no_track_list_redisplay = true;
-       strip_redisplay_does_not_sync_order_keys = true;
+       bool from_scratch = track_model->children().size() == 0;
+       Gtk::TreeModel::Children::iterator insert_iter = track_model->children().end();
 
-       for (RouteList::iterator x = routes.begin(); x != routes.end(); ++x) {
-               boost::shared_ptr<Route> route = (*x);
+       for (Gtk::TreeModel::Children::iterator it = track_model->children().begin(); it != track_model->children().end(); ++it) {
+               boost::shared_ptr<Route> r = (*it)[track_columns.route];
 
-               if (route->is_hidden()) {
-                       continue;
+               if (r->order_key() == (routes.front()->order_key() + routes.size())) {
+                       insert_iter = it;
+                       break;
                }
+       }
 
-                if (route->is_monitor()) {
-                        if (!_monitor_section) {
-                                _monitor_section = new MonitorSection (_session);
-                                out_packer.pack_end (_monitor_section->tearoff(), false, false);
-                        } else {
-                                _monitor_section->set_session (_session);
-                        }
-
-                        _monitor_section->tearoff().show_all ();
-
-                        XMLNode* mnode = ARDOUR_UI::instance()->tearoff_settings (X_("monitor-section"));
-                        if (mnode) {
-                                _monitor_section->tearoff().set_state (*mnode);
-                        }
-
-                        /* no regular strip shown for control out */
-
-                        continue;
-                }
-
-               strip = new MixerStrip (*this, _session, route);
-               strips.push_back (strip);
-
-               Config->get_default_narrow_ms() ? _strip_width = Narrow : _strip_width = Wide;
-
-               if (strip->width_owner() != strip) {
-                       strip->set_width_enum (_strip_width, this);
-               }
+       if(!from_scratch) {
+               _selection.clear_routes ();
+       }
 
-               show_strip (strip);
+       MixerStrip* strip;
 
-               TreeModel::Row row = *(track_model->append());
-               row[track_columns.text] = route->name();
-               row[track_columns.visible] = strip->marked_for_display();
-               row[track_columns.route] = route;
-               row[track_columns.strip] = strip;
+       try {
+               no_track_list_redisplay = true;
+               track_display.set_model (Glib::RefPtr<ListStore>());
 
-               if (route->order_key (N_("signal")) == -1) {
-                       route->set_order_key (N_("signal"), track_model->children().size()-1);
+               for (RouteList::iterator x = routes.begin(); x != routes.end(); ++x) {
+                       boost::shared_ptr<Route> route = (*x);
+                       
+                       if (route->is_auditioner()) {
+                               continue;
+                       }
+                       
+                       if (route->is_monitor()) {
+                               
+                               if (!_monitor_section) {
+                                       _monitor_section = new MonitorSection (_session);
+                                       
+                                       XMLNode* mnode = ARDOUR_UI::instance()->tearoff_settings (X_("monitor-section"));
+                                       if (mnode) {
+                                               _monitor_section->tearoff().set_state (*mnode);
+                                       }
+                               } 
+                               
+                               out_packer.pack_end (_monitor_section->tearoff(), false, false);
+                               _monitor_section->set_session (_session);
+                               _monitor_section->tearoff().show_all ();
+                               
+                               route->DropReferences.connect (*this, invalidator(*this), boost::bind (&Mixer_UI::monitor_section_going_away, this), gui_context());
+                               
+                               /* no regular strip shown for control out */
+                               
+                               continue;
+                       }
+                       
+                       strip = new MixerStrip (*this, _session, route);
+                       strips.push_back (strip);
+
+                       ARDOUR_UI::config()->get_default_narrow_ms() ? _strip_width = Narrow : _strip_width = Wide;
+                       
+                       if (strip->width_owner() != strip) {
+                               strip->set_width_enum (_strip_width, this);
+                       }
+                       
+                       show_strip (strip);
+                       
+                       TreeModel::Row row = *(track_model->insert(insert_iter));
+                       row[track_columns.text] = route->name();
+                       row[track_columns.visible] = strip->route()->is_master() ? true : strip->marked_for_display();
+                       row[track_columns.route] = route;
+                       row[track_columns.strip] = strip;
+
+                       if (!from_scratch) {
+                               _selection.add (strip);
+                       }
+                       
+                       route->PropertyChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::strip_property_changed, this, _1, strip), gui_context());
+                       
+                       strip->WidthChanged.connect (sigc::mem_fun(*this, &Mixer_UI::strip_width_changed));
+                       strip->signal_button_release_event().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::strip_button_release_event), strip));
                }
 
-               route->PropertyChanged.connect (*this, invalidator (*this), ui_bind (&Mixer_UI::strip_property_changed, this, _1, strip), gui_context());
-
-               strip->WidthChanged.connect (sigc::mem_fun(*this, &Mixer_UI::strip_width_changed));
-               strip->signal_button_release_event().connect (sigc::bind (sigc::mem_fun(*this, &Mixer_UI::strip_button_release_event), strip));
+       } catch (...) {
        }
 
        no_track_list_redisplay = false;
-
+       track_display.set_model (track_model);
+       
+       sync_order_keys_from_treeview ();
        redisplay_track_list ();
+}
+
+void
+Mixer_UI::deselect_all_strip_processors ()
+{
+       for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
+               (*i)->deselect_all_processors();
+       }
+}
 
-       strip_redisplay_does_not_sync_order_keys = false;
+void
+Mixer_UI::select_none ()
+{
+       _selection.clear_routes();
+       deselect_all_strip_processors();
+}
+
+void
+Mixer_UI::delete_processors ()
+{
+       for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
+               (*i)->delete_processors();
+       }
 }
 
+
 void
 Mixer_UI::remove_strip (MixerStrip* strip)
 {
@@ -359,101 +434,291 @@ Mixer_UI::remove_strip (MixerStrip* strip)
                return;
        }
 
-       ENSURE_GUI_THREAD (*this, &Mixer_UI::remove_strip, strip);
-
-       cerr << "Mixer UI removing strip for " << strip << endl;
-
        TreeModel::Children rows = track_model->children();
        TreeModel::Children::iterator ri;
        list<MixerStrip *>::iterator i;
-
+       
        if ((i = find (strips.begin(), strips.end(), strip)) != strips.end()) {
                strips.erase (i);
        }
-
-       strip_redisplay_does_not_sync_order_keys = true;
-
+       
        for (ri = rows.begin(); ri != rows.end(); ++ri) {
                if ((*ri)[track_columns.strip] == strip) {
+                        PBD::Unwinder<bool> uw (_route_deletion_in_progress, true);
                        track_model->erase (ri);
                        break;
                }
        }
-
-       strip_redisplay_does_not_sync_order_keys = false;
 }
 
 void
-Mixer_UI::sync_order_keys (string const & src)
+Mixer_UI::reset_remote_control_ids ()
 {
+       if (Config->get_remote_model() == UserOrdered || !_session || _session->deletion_in_progress()) {
+               return;
+       }
+
        TreeModel::Children rows = track_model->children();
+       
+       if (rows.empty()) {
+               return;
+       }
+
+       DEBUG_TRACE (DEBUG::OrderKeys, "mixer resets remote control ids after remote model change\n");
+
        TreeModel::Children::iterator ri;
+       bool rid_change = false;
+       uint32_t rid = 1;
+       uint32_t invisible_key = UINT32_MAX;
+
+       for (ri = rows.begin(); ri != rows.end(); ++ri) {
+               boost::shared_ptr<Route> route = (*ri)[track_columns.route];
+               bool visible = (*ri)[track_columns.visible];
+
+               if (!route->is_master() && !route->is_monitor()) {
+                       
+                       uint32_t new_rid = (visible ? rid : invisible_key--);
+                       
+                       if (new_rid != route->remote_control_id()) {
+                               route->set_remote_control_id_explicit (new_rid);        
+                               rid_change = true;
+                       }
+                       
+                       if (visible) {
+                               rid++;
+                       }
+               }
+       }
+
+       if (rid_change) {
+               /* tell the world that we changed the remote control IDs */
+               _session->notify_remote_id_change ();
+       }
+}
 
-       if (src == N_("signal") || !_session || (_session->state_of_the_state() & (Session::Loading|Session::Deletion)) || rows.empty()) {
+void
+Mixer_UI::sync_order_keys_from_treeview ()
+{
+       if (ignore_reorder || !_session || _session->deletion_in_progress()) {
                return;
        }
 
-       std::map<int,int> keys;
+       TreeModel::Children rows = track_model->children();
+       
+       if (rows.empty()) {
+               return;
+       }
 
+       DEBUG_TRACE (DEBUG::OrderKeys, "mixer sync order keys from model\n");
+
+       TreeModel::Children::iterator ri;
        bool changed = false;
+       bool rid_change = false;
+       uint32_t order = 0;
+       uint32_t rid = 1;
+       uint32_t invisible_key = UINT32_MAX;
 
-       unsigned order = 0;
-       for (ri = rows.begin(); ri != rows.end(); ++ri, ++order) {
+       for (ri = rows.begin(); ri != rows.end(); ++ri) {
                boost::shared_ptr<Route> route = (*ri)[track_columns.route];
-               unsigned int old_key = order;
-               unsigned int new_key = route->order_key (N_("signal"));
+               bool visible = (*ri)[track_columns.visible];
 
-               keys[new_key] = old_key;
+               uint32_t old_key = route->order_key ();
 
-               if (new_key != old_key) {
+               if (order != old_key) {
+                       route->set_order_key (order);
                        changed = true;
                }
+
+               if ((Config->get_remote_model() == MixerOrdered) && !route->is_master() && !route->is_monitor()) {
+
+                       uint32_t new_rid = (visible ? rid : invisible_key--);
+
+                       if (new_rid != route->remote_control_id()) {
+                               route->set_remote_control_id_explicit (new_rid);        
+                               rid_change = true;
+                       }
+                       
+                       if (visible) {
+                               rid++;
+                       }
+
+               }
+
+               ++order;
        }
 
-       if (keys.size() != rows.size()) {
-               PBD::stacktrace (cerr, 20);
+       if (changed) {
+               /* tell everyone that we changed the mixer sort keys */
+               _session->sync_order_keys ();
+       }
+
+       if (rid_change) {
+               /* tell the world that we changed the remote control IDs */
+               _session->notify_remote_id_change ();
+       }
+}
+
+void
+Mixer_UI::sync_treeview_from_order_keys ()
+{
+       if (!_session || _session->deletion_in_progress()) {
+               return;
        }
-       assert(keys.size() == rows.size());
 
-       // Remove any gaps in keys caused by automation children tracks
+       DEBUG_TRACE (DEBUG::OrderKeys, "mixer sync model from order keys.\n");
+
+       /* we could get here after either a change in the Mixer or Editor sort
+        * order, but either way, the mixer order keys reflect the intended
+        * order for the GUI, so reorder the treeview model to match it.
+        */
+
        vector<int> neworder;
-       for (std::map<int,int>::const_iterator i = keys.begin(); i != keys.end(); ++i) {
-               neworder.push_back(i->second);
+       TreeModel::Children rows = track_model->children();
+       uint32_t old_order = 0;
+       bool changed = false;
+
+       if (rows.empty()) {
+               return;
+       }
+
+       OrderKeySortedRoutes sorted_routes;
+
+       for (TreeModel::Children::iterator ri = rows.begin(); ri != rows.end(); ++ri, ++old_order) {
+               boost::shared_ptr<Route> route = (*ri)[track_columns.route];
+               sorted_routes.push_back (RoutePlusOrderKey (route, old_order, route->order_key ()));
+       }
+
+       SortByNewDisplayOrder cmp;
+
+       sort (sorted_routes.begin(), sorted_routes.end(), cmp);
+       neworder.assign (sorted_routes.size(), 0);
+
+       uint32_t n = 0;
+       
+       for (OrderKeySortedRoutes::iterator sr = sorted_routes.begin(); sr != sorted_routes.end(); ++sr, ++n) {
+
+               neworder[n] = sr->old_display_order;
+
+               if (sr->old_display_order != n) {
+                       changed = true;
+               }
+
+               DEBUG_TRACE (DEBUG::OrderKeys, string_compose ("MIXER change order for %1 from %2 to %3\n",
+                                                              sr->route->name(), sr->old_display_order, n));
        }
-       assert(neworder.size() == rows.size());
 
        if (changed) {
-               strip_redisplay_does_not_reset_order_keys = true;
+               Unwinder<bool> uw (ignore_reorder, true);
                track_model->reorder (neworder);
-               strip_redisplay_does_not_reset_order_keys = false;
        }
+
+       redisplay_track_list ();
 }
 
 void
-Mixer_UI::follow_strip_selection ()
+Mixer_UI::follow_editor_selection ()
+{
+       if (!ARDOUR_UI::config()->get_link_editor_and_mixer_selection() || _following_editor_selection) {
+               return;
+       }
+
+       _following_editor_selection = true;
+       _selection.block_routes_changed (true);
+       
+       TrackSelection& s (PublicEditor::instance().get_selection().tracks);
+
+       _selection.clear_routes ();
+
+       for (TrackViewList::iterator i = s.begin(); i != s.end(); ++i) {
+               RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (*i);
+               if (rtav) {
+                       MixerStrip* ms = strip_by_route (rtav->route());
+                       if (ms) {
+                               _selection.add (ms);
+                       }
+               }
+       }
+
+       _following_editor_selection = false;
+       _selection.block_routes_changed (false);
+}
+
+
+MixerStrip*
+Mixer_UI::strip_by_route (boost::shared_ptr<Route> r)
 {
        for (list<MixerStrip *>::iterator i = strips.begin(); i != strips.end(); ++i) {
-               (*i)->set_selected (_selection.selected ((*i)->route()));
+               if ((*i)->route() == r) {
+                       return (*i);
+               }
        }
+
+       return 0;
 }
 
 bool
 Mixer_UI::strip_button_release_event (GdkEventButton *ev, MixerStrip *strip)
 {
        if (ev->button == 1) {
-
-               /* this allows the user to click on the strip to terminate comment
-                  editing. XXX it needs improving so that we don't select the strip
-                  at the same time.
-               */
-
-               if (_selection.selected (strip->route())) {
-                       _selection.remove (strip->route());
+               if (_selection.selected (strip)) {
+                       /* primary-click: toggle selection state of strip */
+                       if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
+                               _selection.remove (strip);
+                       } 
                } else {
-                       if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
-                               _selection.add (strip->route());
+                       if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
+                               _selection.add (strip);
+                       } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::RangeSelectModifier)) {
+
+                               if (!_selection.selected(strip)) {
+                               
+                                       /* extend selection */
+                                       
+                                       vector<MixerStrip*> tmp;
+                                       bool accumulate = false;
+                                       bool found_another = false;
+                                       
+                                       tmp.push_back (strip);
+
+                                       for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
+                                               if ((*i) == strip) {
+                                                       /* hit clicked strip, start accumulating till we hit the first 
+                                                          selected strip
+                                                       */
+                                                       if (accumulate) {
+                                                               /* done */
+                                                               break;
+                                                       } else {
+                                                               accumulate = true;
+                                                       }
+                                               } else if (_selection.selected (*i)) {
+                                                       /* hit selected strip. if currently accumulating others,
+                                                          we're done. if not accumulating others, start doing so.
+                                                       */
+                                                       found_another = true;
+                                                       if (accumulate) {
+                                                               /* done */
+                                                               break;
+                                                       } else {
+                                                               accumulate = true;
+                                                       }
+                                               } else {
+                                                       if (accumulate) {
+                                                               tmp.push_back (*i);
+                                                       }
+                                               }
+                                       }
+
+                                       if (found_another) {
+                                               for (vector<MixerStrip*>::iterator i = tmp.begin(); i != tmp.end(); ++i) {
+                                                       _selection.add (*i);
+                                               }
+                                       } else
+                                               _selection.set (strip);  //user wants to start a range selection, but there aren't any others selected yet
+                               }
+
                        } else {
-                               _selection.set (strip->route());
+                               _selection.set (strip);
                        }
                }
        }
@@ -479,26 +744,30 @@ Mixer_UI::set_session (Session* sess)
        XMLNode* node = ARDOUR_UI::instance()->mixer_settings();
        set_state (*node);
 
-       WindowTitle title(_session->name());
-       title += _("Mixer");
-       title += Glib::get_application_name();
-
-       set_title (title.get_string());
+       update_title ();
 
        initial_track_display ();
 
-       _session->RouteAdded.connect (_session_connections, invalidator (*this), ui_bind (&Mixer_UI::add_strip, this, _1), gui_context());
-       _session->route_group_added.connect (_session_connections, invalidator (*this), ui_bind (&Mixer_UI::add_route_group, this, _1), gui_context());
+       _session->RouteAdded.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_strips, this, _1), gui_context());
+       _session->route_group_added.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::add_route_group, this, _1), gui_context());
        _session->route_group_removed.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::route_groups_changed, this), gui_context());
        _session->route_groups_reordered.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::route_groups_changed, this), gui_context());
-       _session->config.ParameterChanged.connect (_session_connections, invalidator (*this), ui_bind (&Mixer_UI::parameter_changed, this, _1), gui_context());
+       _session->config.ParameterChanged.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::parameter_changed, this, _1), gui_context());
+       _session->DirtyChanged.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::update_title, this), gui_context());
+       _session->StateSaved.connect (_session_connections, invalidator (*this), boost::bind (&Mixer_UI::update_title, this), gui_context());
 
-       Config->ParameterChanged.connect (*this, invalidator (*this), ui_bind (&Mixer_UI::parameter_changed, this, _1), gui_context ());
+       Config->ParameterChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::parameter_changed, this, _1), gui_context ());
 
        route_groups_changed ();
 
        if (_visible) {
                show_window();
+
+               /* Bit of a hack; if we're here, we're opening the mixer because of our
+                  instant XML state having a show-mixer property.  Fix up the corresponding
+                  action state.
+               */
+               ActionManager::check_toggleaction ("<Actions>/Common/toggle-mixer");
        }
 
        start_updating ();
@@ -507,9 +776,12 @@ Mixer_UI::set_session (Session* sess)
 void
 Mixer_UI::session_going_away ()
 {
-       ENSURE_GUI_THREAD (*this, &Mixer_UI::session_going_away)
+       ENSURE_GUI_THREAD (*this, &Mixer_UI::session_going_away);
 
+       _in_group_rebuild_or_clear = true;
        group_model->clear ();
+       _in_group_rebuild_or_clear = false;
+
        _selection.clear ();
        track_model->clear ();
 
@@ -523,13 +795,56 @@ Mixer_UI::session_going_away ()
 
        strips.clear ();
 
-       WindowTitle title(Glib::get_application_name());
-       title += _("Mixer");
-       set_title (title.get_string());
-
        stop_updating ();
 
        SessionHandlePtr::session_going_away ();
+
+       _session = 0;
+       update_title ();
+}
+
+void
+Mixer_UI::track_visibility_changed (std::string const & path)
+{
+       if (_session && _session->deletion_in_progress()) {
+               return;
+       }
+
+       TreeIter iter;
+
+       if ((iter = track_model->get_iter (path))) {
+               MixerStrip* strip = (*iter)[track_columns.strip];
+               if (strip) {
+                       bool visible = (*iter)[track_columns.visible];
+
+                       if (strip->set_marked_for_display (!visible)) {
+                               update_track_visibility ();
+                       }
+               }
+       }
+}
+
+void
+Mixer_UI::update_track_visibility ()
+{
+       TreeModel::Children rows = track_model->children();
+       TreeModel::Children::iterator i;
+
+       {
+               Unwinder<bool> uw (no_track_list_redisplay, true);
+               
+               for (i = rows.begin(); i != rows.end(); ++i) {
+                       MixerStrip *strip = (*i)[track_columns.strip];
+                       (*i)[track_columns.visible] = strip->marked_for_display ();
+               }
+               
+               /* force route order keys catch up with visibility changes
+                */
+               
+               sync_order_keys_from_treeview ();
+       }
+
+       redisplay_track_list ();
 }
 
 void
@@ -543,6 +858,7 @@ Mixer_UI::show_strip (MixerStrip* ms)
                MixerStrip* strip = (*i)[track_columns.strip];
                if (strip == ms) {
                        (*i)[track_columns.visible] = true;
+                       redisplay_track_list ();
                        break;
                }
        }
@@ -559,6 +875,7 @@ Mixer_UI::hide_strip (MixerStrip* ms)
                MixerStrip* strip = (*i)[track_columns.strip];
                if (strip == ms) {
                        (*i)[track_columns.visible] = false;
+                       redisplay_track_list ();
                        break;
                }
        }
@@ -594,25 +911,26 @@ Mixer_UI::set_all_strips_visibility (bool yn)
        TreeModel::Children rows = track_model->children();
        TreeModel::Children::iterator i;
 
-       no_track_list_redisplay = true;
-
-       for (i = rows.begin(); i != rows.end(); ++i) {
-
-               TreeModel::Row row = (*i);
-               MixerStrip* strip = row[track_columns.strip];
-
-               if (strip == 0) {
-                       continue;
-               }
-
-               if (strip->route()->is_master() || strip->route()->is_monitor()) {
-                       continue;
+       {
+               Unwinder<bool> uw (no_track_list_redisplay, true);
+               
+               for (i = rows.begin(); i != rows.end(); ++i) {
+                       
+                       TreeModel::Row row = (*i);
+                       MixerStrip* strip = row[track_columns.strip];
+                       
+                       if (strip == 0) {
+                               continue;
+                       }
+                       
+                       if (strip->route()->is_master() || strip->route()->is_monitor()) {
+                               continue;
+                       }
+                       
+                       (*i)[track_columns.visible] = yn;
                }
-
-               (*i)[track_columns.visible] = yn;
        }
 
-       no_track_list_redisplay = false;
        redisplay_track_list ();
 }
 
@@ -623,42 +941,43 @@ Mixer_UI::set_all_audio_visibility (int tracks, bool yn)
        TreeModel::Children rows = track_model->children();
        TreeModel::Children::iterator i;
 
-       no_track_list_redisplay = true;
-
-       for (i = rows.begin(); i != rows.end(); ++i) {
-               TreeModel::Row row = (*i);
-               MixerStrip* strip = row[track_columns.strip];
-
-               if (strip == 0) {
-                       continue;
-               }
-
-               if (strip->route()->is_master() || strip->route()->is_monitor()) {
-                       continue;
-               }
-
-               boost::shared_ptr<AudioTrack> at = strip->audio_track();
-
-               switch (tracks) {
-               case 0:
-                       (*i)[track_columns.visible] = yn;
-                       break;
-
-               case 1:
-                       if (at) { /* track */
-                               (*i)[track_columns.visible] = yn;
+       {
+               Unwinder<bool> uw (no_track_list_redisplay, true);
+               
+               for (i = rows.begin(); i != rows.end(); ++i) {
+                       TreeModel::Row row = (*i);
+                       MixerStrip* strip = row[track_columns.strip];
+                       
+                       if (strip == 0) {
+                               continue;
                        }
-                       break;
-
-               case 2:
-                       if (!at) { /* bus */
+                       
+                       if (strip->route()->is_master() || strip->route()->is_monitor()) {
+                               continue;
+                       }
+                       
+                       boost::shared_ptr<AudioTrack> at = strip->audio_track();
+                       
+                       switch (tracks) {
+                       case 0:
                                (*i)[track_columns.visible] = yn;
+                               break;
+                               
+                       case 1:
+                               if (at) { /* track */
+                                       (*i)[track_columns.visible] = yn;
+                               }
+                               break;
+                               
+                       case 2:
+                               if (!at) { /* bus */
+                                       (*i)[track_columns.visible] = yn;
+                               }
+                               break;
                        }
-                       break;
                }
        }
 
-       no_track_list_redisplay = false;
        redisplay_track_list ();
 }
 
@@ -699,30 +1018,26 @@ Mixer_UI::hide_all_audiotracks ()
 void
 Mixer_UI::track_list_reorder (const TreeModel::Path&, const TreeModel::iterator&, int* /*new_order*/)
 {
-       strip_redisplay_does_not_sync_order_keys = true;
-       _session->set_remote_control_ids();
-       redisplay_track_list ();
-       strip_redisplay_does_not_sync_order_keys = false;
-}
-
-void
-Mixer_UI::track_list_change (const Gtk::TreeModel::Path&, const Gtk::TreeModel::iterator&)
-{
-       // never reset order keys because of a property change
-       strip_redisplay_does_not_reset_order_keys = true;
-       _session->set_remote_control_ids();
-       redisplay_track_list ();
-       strip_redisplay_does_not_reset_order_keys = false;
+       DEBUG_TRACE (DEBUG::OrderKeys, "mixer UI treeview reordered\n");
+       sync_order_keys_from_treeview ();
 }
 
 void
 Mixer_UI::track_list_delete (const Gtk::TreeModel::Path&)
 {
-       /* this could require an order sync */
-       if (_session && !_session->deletion_in_progress()) {
-               _session->set_remote_control_ids();
-               redisplay_track_list ();
-       }
+       /* this happens as the second step of a DnD within the treeview as well
+          as when a row/route is actually deleted.
+           
+           if it was a deletion then we have to force a redisplay because
+           order keys may not have changed.
+       */
+
+       DEBUG_TRACE (DEBUG::OrderKeys, "mixer UI treeview row deleted\n");
+       sync_order_keys_from_treeview ();
+
+        if (_route_deletion_in_progress) {
+                redisplay_track_list ();
+        }
 }
 
 void
@@ -730,13 +1045,13 @@ Mixer_UI::redisplay_track_list ()
 {
        TreeModel::Children rows = track_model->children();
        TreeModel::Children::iterator i;
-       long order;
-
+       
        if (no_track_list_redisplay) {
                return;
        }
 
-       for (order = 0, i = rows.begin(); i != rows.end(); ++i, ++order) {
+       for (i = rows.begin(); i != rows.end(); ++i) {
+
                MixerStrip* strip = (*i)[track_columns.strip];
 
                if (strip == 0) {
@@ -744,20 +1059,16 @@ Mixer_UI::redisplay_track_list ()
                        continue;
                }
 
-               bool visible = (*i)[track_columns.visible];
+               bool const visible = (*i)[track_columns.visible];
 
                if (visible) {
-                       strip->set_marked_for_display (true);
-                       strip->route()->set_order_key (N_("signal"), order);
-
-                       if (!strip_redisplay_does_not_reset_order_keys) {
-                               strip->route()->set_order_key (N_("signal"), order);
-                       }
+                       strip->set_gui_property ("visible", true);
 
                        if (strip->packed()) {
 
                                if (strip->route()->is_master() || strip->route()->is_monitor()) {
                                        out_packer.reorder_child (*strip, -1);
+
                                } else {
                                        strip_packer.reorder_child (*strip, -1); /* put at end */
                                }
@@ -770,12 +1081,11 @@ Mixer_UI::redisplay_track_list ()
                                        strip_packer.pack_start (*strip, false, false);
                                }
                                strip->set_packed (true);
-                               //strip->show();
                        }
 
                } else {
 
-                       strip->set_marked_for_display (false);
+                       strip->set_gui_property ("visible", false);
 
                        if (strip->route()->is_master() || strip->route()->is_monitor()) {
                                /* do nothing, these cannot be hidden */
@@ -788,15 +1098,6 @@ Mixer_UI::redisplay_track_list ()
                }
        }
 
-       if (!strip_redisplay_does_not_reset_order_keys && !strip_redisplay_does_not_sync_order_keys) {
-               _session->sync_order_keys (N_("signal"));
-       }
-
-       // Resigc::bind all of the midi controls automatically
-
-       if (auto_rebinding)
-               auto_rebind_midi_controls ();
-
        _group_tabs->set_dirty ();
 }
 
@@ -827,111 +1128,24 @@ Mixer_UI::strip_width_changed ()
 
 }
 
-void
-Mixer_UI::set_auto_rebinding( bool val )
-{
-       if( val == TRUE )
-       {
-               auto_rebinding = TRUE;
-               Session::AutoBindingOff();
-       }
-       else
-       {
-               auto_rebinding = FALSE;
-               Session::AutoBindingOn();
-       }
-}
-
-void
-Mixer_UI::toggle_auto_rebinding()
-{
-       if (auto_rebinding)
-       {
-               set_auto_rebinding( FALSE );
-       }
-
-       else
-       {
-               set_auto_rebinding( TRUE );
-       }
-
-       auto_rebind_midi_controls();
-}
-
-void
-Mixer_UI::auto_rebind_midi_controls ()
-{
-       TreeModel::Children rows = track_model->children();
-       TreeModel::Children::iterator i;
-       int pos;
-
-       // Create bindings for all visible strips and remove those that are not visible
-       pos = 1;  // 0 is reserved for the master strip
-       for (i = rows.begin(); i != rows.end(); ++i) {
-               MixerStrip* strip = (*i)[track_columns.strip];
-
-               if ( (*i)[track_columns.visible] == true ) {  // add bindings for
-                       // make the actual binding
-                       //cout<<"Auto Binding:  Visible Strip Found: "<<strip->name()<<endl;
-
-                       int controlValue = pos;
-                       if( strip->route()->is_master() ) {
-                               controlValue = 0;
-                       }
-                       else {
-                               pos++;
-                       }
-
-                       PBD::Controllable::CreateBinding ( strip->solo_button->get_controllable().get(), controlValue, 0);
-                       PBD::Controllable::CreateBinding ( strip->mute_button->get_controllable().get(), controlValue, 1);
-
-                       if( strip->is_audio_track() ) {
-                               PBD::Controllable::CreateBinding ( strip->rec_enable_button->get_controllable().get(), controlValue, 2);
-                       }
-
-                       PBD::Controllable::CreateBinding ( strip->gpm.get_controllable().get(), controlValue, 3);
-                       PBD::Controllable::CreateBinding ( strip->panners.get_controllable().get(), controlValue, 4);
-
-               }
-               else {  // Remove any existing binding
-                       PBD::Controllable::DeleteBinding ( strip->solo_button->get_controllable().get() );
-                       PBD::Controllable::DeleteBinding ( strip->mute_button->get_controllable().get() );
-
-                       if( strip->is_audio_track() ) {
-                               PBD::Controllable::DeleteBinding ( strip->rec_enable_button->get_controllable().get() );
-                       }
-
-                       PBD::Controllable::DeleteBinding ( strip->gpm.get_controllable().get() );
-                       PBD::Controllable::DeleteBinding ( strip->panners.get_controllable().get() ); // This only takes the first panner if there are multiples...
-               }
-
-       } // for
-
-}
-
-struct SignalOrderRouteSorter {
-    bool operator() (boost::shared_ptr<Route> a, boost::shared_ptr<Route> b) {
-           /* use of ">" forces the correct sort order */
-           return a->order_key (N_("signal")) < b->order_key (N_("signal"));
-    }
-};
-
 void
 Mixer_UI::initial_track_display ()
 {
        boost::shared_ptr<RouteList> routes = _session->get_routes();
        RouteList copy (*routes);
-       SignalOrderRouteSorter sorter;
+       ARDOUR::SignalOrderRouteSorter sorter;
 
        copy.sort (sorter);
 
-       no_track_list_redisplay = true;
-
-       track_model->clear ();
-
-       add_strip (copy);
+       {
+               Unwinder<bool> uw1 (no_track_list_redisplay, true);
+               Unwinder<bool> uw2 (ignore_reorder, true);
 
-       no_track_list_redisplay = false;
+               track_model->clear ();
+               add_strips (copy);
+       }
+       
+       _session->sync_order_keys ();
 
        redisplay_track_list ();
 }
@@ -954,46 +1168,9 @@ Mixer_UI::track_display_button_press (GdkEventButton* ev)
                return true;
        }
 
-       TreeIter iter;
-       TreeModel::Path path;
-       TreeViewColumn* column;
-       int cellx;
-       int celly;
-
-       if (!track_display.get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
-               return false;
-       }
-
-       switch (GPOINTER_TO_UINT (column->get_data (X_("colnum")))) {
-       case 0:
-               /* allow normal processing to occur */
-               return false;
-
-       case 1: /* visibility */
-
-               if ((iter = track_model->get_iter (path))) {
-                       MixerStrip* strip = (*iter)[track_columns.strip];
-                       if (strip) {
-
-                               if (!strip->route()->is_master() && !strip->route()->is_monitor()) {
-                                       bool visible = (*iter)[track_columns.visible];
-                                       (*iter)[track_columns.visible] = !visible;
-                               }
-#ifdef GTKOSX
-                               track_display.queue_draw();
-#endif
-                       }
-               }
-               return true;
-
-       default:
-               break;
-       }
-
        return false;
 }
 
-
 void
 Mixer_UI::build_track_menu ()
 {
@@ -1106,7 +1283,7 @@ Mixer_UI::route_groups_changed ()
 {
        ENSURE_GUI_THREAD (*this, &Mixer_UI::route_groups_changed);
 
-       _in_group_rebuild = true;
+       _in_group_rebuild_or_clear = true;
 
        /* just rebuild the while thing */
 
@@ -1123,14 +1300,14 @@ Mixer_UI::route_groups_changed ()
        _session->foreach_route_group (sigc::mem_fun (*this, &Mixer_UI::add_route_group));
 
        _group_tabs->set_dirty ();
-       _in_group_rebuild = false;
+       _in_group_rebuild_or_clear = false;
 }
 
 void
 Mixer_UI::new_route_group ()
 {
        RouteList rl;
-       
+
        _group_tabs->run_new_group_dialog (rl);
 }
 
@@ -1258,7 +1435,7 @@ Mixer_UI::route_group_row_change (const Gtk::TreeModel::Path&, const Gtk::TreeMo
 void
 Mixer_UI::route_group_row_deleted (Gtk::TreeModel::Path const &)
 {
-       if (_in_group_rebuild) {
+       if (_in_group_rebuild_or_clear) {
                return;
        }
 
@@ -1296,7 +1473,7 @@ Mixer_UI::add_route_group (RouteGroup* group)
                focus = true;
        }
 
-       group->PropertyChanged.connect (*this, invalidator (*this), ui_bind (&Mixer_UI::route_group_property_changed, this, group, _1), gui_context());
+       group->PropertyChanged.connect (*this, invalidator (*this), boost::bind (&Mixer_UI::route_group_property_changed, this, group, _1), gui_context());
 
        if (focus) {
                TreeViewColumn* col = group_display.get_column (0);
@@ -1323,12 +1500,12 @@ Mixer_UI::strip_scroller_button_release (GdkEventButton* ev)
 }
 
 void
-Mixer_UI::set_strip_width (Width w)
+Mixer_UI::set_strip_width (Width w, bool save)
 {
        _strip_width = w;
 
        for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
-               (*i)->set_width_enum (w, this);
+               (*i)->set_width_enum (w, save ? (*i)->width_owner() : this);
        }
 }
 
@@ -1405,6 +1582,19 @@ Mixer_UI::set_state (const XMLNode& node)
                }
        }
 
+       if ((prop = node.property ("maximised"))) {
+               bool yn = string_is_affirmative (prop->value());
+               Glib::RefPtr<Action> act = ActionManager::get_action (X_("Common"), X_("ToggleMaximalMixer"));
+               assert (act);
+               Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
+               bool fs = tact && tact->get_active();
+               if (yn ^ fs) {
+                       ActionManager::do_action ("Common",
+                                       "ToggleMaximalMixer");
+               }
+       }
+
+
        return 0;
 }
 
@@ -1447,6 +1637,8 @@ Mixer_UI::get_state (void)
 
        node->add_property ("show-mixer", _visible ? "yes" : "no");
 
+       node->add_property ("maximised", _maximised ? "yes" : "no");
+
        return *node;
 }
 
@@ -1459,21 +1651,13 @@ Mixer_UI::pane_allocation_handler (Allocation&, Gtk::Paned* which)
        char buf[32];
        XMLNode* node = ARDOUR_UI::instance()->mixer_settings();
        XMLNode* geometry;
-       int width, height;
+       int height;
        static int32_t done[3] = { 0, 0, 0 };
 
-       width = default_width;
        height = default_height;
 
        if ((geometry = find_named_node (*node, "geometry")) != 0) {
 
-
-               if ((prop = geometry->property ("x_size")) == 0) {
-                       prop = geometry->property ("x-size");
-               }
-               if (prop) {
-                       width = atoi (prop->value());
-               }
                if ((prop = geometry->property ("y_size")) == 0) {
                        prop = geometry->property ("y-size");
                }
@@ -1518,8 +1702,9 @@ Mixer_UI::pane_allocation_handler (Allocation&, Gtk::Paned* which)
        }
 }
 void
-Mixer_UI::scroll_left () 
+Mixer_UI::scroll_left ()
 {
+       if (!scroller.get_hscrollbar()) return;
        Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
        /* stupid GTK: can't rely on clamping across versions */
        scroller.get_hscrollbar()->set_value (max (adj->get_lower(), adj->get_value() - adj->get_step_increment()));
@@ -1528,6 +1713,7 @@ Mixer_UI::scroll_left ()
 void
 Mixer_UI::scroll_right ()
 {
+       if (!scroller.get_hscrollbar()) return;
        Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
        /* stupid GTK: can't rely on clamping across versions */
        scroller.get_hscrollbar()->set_value (min (adj->get_upper(), adj->get_value() + adj->get_step_increment()));
@@ -1536,29 +1722,40 @@ Mixer_UI::scroll_right ()
 bool
 Mixer_UI::on_key_press_event (GdkEventKey* ev)
 {
-       switch (ev->keyval) {
-       case GDK_Left:
-               scroll_left ();
-               return true;
+        /* focus widget gets first shot, then bindings, otherwise
+           forward to main window
+        */
 
-       case GDK_Right:
-               scroll_right ();
+       if (gtk_window_propagate_key_event (GTK_WINDOW(gobj()), ev)) {
                return true;
+       }
 
-       default:
-               break;
+       KeyboardKey k (ev->state, ev->keyval);
+
+       if (bindings.activate (k, Bindings::Press)) {
+               return true;
        }
 
-       return key_press_focus_accelerator_handler (*this, ev);
+        return forward_key_press (ev);
 }
 
 bool
 Mixer_UI::on_key_release_event (GdkEventKey* ev)
 {
-       return Gtk::Window::on_key_release_event (ev);
-       // return key_press_focus_accelerator_handler (*this, ev);
-}
+       if (gtk_window_propagate_key_event (GTK_WINDOW(gobj()), ev)) {
+               return true;
+       }
 
+       KeyboardKey k (ev->state, ev->keyval);
+       
+       if (bindings.activate (k, Bindings::Release)) {
+               return true;
+       }
+
+        /* don't forward releases */
+
+        return true;
+}
 
 bool
 Mixer_UI::on_scroll_event (GdkEventScroll* ev)
@@ -1601,10 +1798,12 @@ Mixer_UI::parameter_changed (string const & p)
                        _group_tabs->hide ();
                }
        } else if (p == "default-narrow_ms") {
-               bool const s = Config->get_default_narrow_ms ();
+               bool const s = ARDOUR_UI::config()->get_default_narrow_ms ();
                for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
                        (*i)->set_width_enum (s ? Narrow : Wide, this);
                }
+       } else if (p == "remote-model") {
+               reset_remote_control_ids ();
        }
 }
 
@@ -1619,7 +1818,7 @@ Mixer_UI::plugin_selector()
 {
 #ifdef DEFER_PLUGIN_SELECTOR_LOAD
        if (!_plugin_selector)
-               _plugin_selector = new PluginSelector (PluginManager::the_manager ());
+               _plugin_selector = new PluginSelector (PluginManager::instance());
 #endif
 
        return _plugin_selector;
@@ -1636,18 +1835,18 @@ Mixer_UI::setup_track_display ()
        track_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
        track_display.get_column (0)->set_expand(true);
        track_display.get_column (1)->set_expand(false);
-       track_display.set_name (X_("MixerTrackDisplayList"));
+       track_display.set_name (X_("EditGroupList"));
        track_display.get_selection()->set_mode (Gtk::SELECTION_NONE);
        track_display.set_reorderable (true);
        track_display.set_headers_visible (true);
 
        track_model->signal_row_deleted().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_delete));
-       track_model->signal_row_changed().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_change));
        track_model->signal_rows_reordered().connect (sigc::mem_fun (*this, &Mixer_UI::track_list_reorder));
 
        CellRendererToggle* track_list_visible_cell = dynamic_cast<CellRendererToggle*>(track_display.get_column_cell_renderer (1));
        track_list_visible_cell->property_activatable() = true;
        track_list_visible_cell->property_radio() = false;
+       track_list_visible_cell->signal_toggled().connect (sigc::mem_fun (*this, &Mixer_UI::track_visibility_changed));
 
        track_display.signal_button_press_event().connect (sigc::mem_fun (*this, &Mixer_UI::track_display_button_press), false);
 
@@ -1665,7 +1864,7 @@ Mixer_UI::setup_track_display ()
        b->add (*w);
 
        b->signal_clicked().connect (sigc::mem_fun (*this, &Mixer_UI::new_track_or_bus));
-       
+
        v->pack_start (*b, false, false);
 
        track_display_frame.set_name("BaseFrame");
@@ -1683,3 +1882,116 @@ Mixer_UI::new_track_or_bus ()
        ARDOUR_UI::instance()->add_route (this);
 }
 
+
+void
+Mixer_UI::update_title ()
+{
+       if (_session) {
+               string n;
+               
+               if (_session->snap_name() != _session->name()) {
+                       n = _session->snap_name ();
+               } else {
+                       n = _session->name ();
+               }
+
+               if (_session->dirty ()) {
+                       n = "*" + n;
+               }
+               
+               WindowTitle title (n);
+               title += S_("Window|Mixer");
+               title += Glib::get_application_name ();
+               set_title (title.get_string());
+
+       } else {
+               
+               WindowTitle title (S_("Window|Mixer"));
+               title += Glib::get_application_name ();
+               set_title (title.get_string());
+       }
+}
+
+MixerStrip*
+Mixer_UI::strip_by_x (int x)
+{
+       for (list<MixerStrip*>::iterator i = strips.begin(); i != strips.end(); ++i) {
+               int x1, x2, y;
+
+               (*i)->translate_coordinates (*this, 0, 0, x1, y);
+               x2 = x1 + (*i)->get_width();
+
+               if (x >= x1 && x <= x2) {
+                       return (*i);
+               }
+       }
+
+       return 0;
+}
+
+void
+Mixer_UI::set_route_targets_for_operation ()
+{
+       _route_targets.clear ();
+
+       if (!_selection.empty()) {
+               _route_targets = _selection.routes;
+               return;
+       }
+
+//  removed "implicit" selections of strips, after discussion on IRC
+
+}
+
+void
+Mixer_UI::monitor_section_going_away ()
+{
+       if (_monitor_section) {
+               out_packer.remove (_monitor_section->tearoff());
+               _monitor_section->set_session (0);
+       }
+}
+
+void
+Mixer_UI::toggle_midi_input_active (bool flip_others)
+{
+       boost::shared_ptr<RouteList> rl (new RouteList);
+       bool onoff = false;
+
+       set_route_targets_for_operation ();
+
+       for (RouteUISelection::iterator r = _route_targets.begin(); r != _route_targets.end(); ++r) {
+               boost::shared_ptr<MidiTrack> mt = (*r)->midi_track();
+
+               if (mt) {
+                       rl->push_back ((*r)->route());
+                       onoff = !mt->input_active();
+               }
+       }
+       
+       _session->set_exclusive_input_active (rl, onoff, flip_others);
+}
+
+void
+Mixer_UI::maximise_mixer_space ()
+{
+       if (_maximised) {
+               return;
+       }
+
+       fullscreen ();
+
+       _maximised = true;
+}
+
+void
+Mixer_UI::restore_mixer_space ()
+{
+       if (!_maximised) {
+               return;
+       }
+
+       unfullscreen();
+
+       _maximised = false;
+}