Move Diskstream ownership to Track, so that Session no longer holds lists of Diskstre...
[ardour.git] / gtk2_ardour / editor.cc
index 817b02ea2905e4dc074178040ebd435ae32ed02c..630499a9c4645b0d6f5bb15583612e4e11179550 100644 (file)
 #include <algorithm>
 #include <map>
 
+#include "ardour_ui.h"
+/*
+ * ardour_ui.h include was moved to the top of the list
+ * due to a conflicting definition of 'Style' between
+ * Apple's MacTypes.h and BarController.
+ */
+
 #include <boost/none.hpp>
 
 #include <sigc++/bind.h>
 #include "ardour/tempo.h"
 #include "ardour/utils.h"
 #include "ardour/session_playlists.h"
+#include "ardour/audioengine.h"
 
 #include "control_protocol/control_protocol.h"
 
-#include "ardour_ui.h"
 #include "editor.h"
 #include "keyboard.h"
 #include "marker.h"
 #endif
 
 using namespace std;
-using namespace sigc;
 using namespace ARDOUR;
 using namespace PBD;
 using namespace Gtk;
@@ -214,9 +220,32 @@ show_me_the_size (Requisition* r, const char* what)
        cerr << "size of " << what << " = " << r->width << " x " << r->height << endl;
 }
 
+#ifdef GTKOSX
+static void
+pane_size_watcher (Paned* pane)
+{
+       /* if the handle of a pane vanishes into (at least) the tabs of a notebook,
+          it is no longer accessible. so stop that. this doesn't happen on X11,
+          just the quartz backend.
+
+          ugh.
+       */
+
+       int max_width_of_lhs = GTK_WIDGET(pane->gobj())->allocation.width - 25;
+
+       gint pos = pane->get_position ();
+
+       if (pos > max_width_of_lhs) {
+               pane->set_position (max_width_of_lhs);
+       }
+}
+#endif
+
 Editor::Editor ()
+       : _join_object_range_state (JOIN_OBJECT_RANGE_NONE)
+
          /* time display buttons */
-       : minsec_label (_("Mins:Secs"))
+       , minsec_label (_("Mins:Secs"))
        , bbt_label (_("Bars:Beats"))
        , timecode_label (_("Timecode"))
        , frame_label (_("Samples"))
@@ -255,6 +284,7 @@ Editor::Editor ()
        , nudge_clock (X_("nudge"), false, X_("NudgeClock"), true, false, true)
        , meters_running(false)
        , _pending_locate_request (false)
+       , _pending_initial_locate (false)
 
 {
        constructed = false;
@@ -263,7 +293,6 @@ Editor::Editor ()
 
        PublicEditor::_instance = this;
 
-       session = 0;
        _have_idled = false;
 
        selection = new Selection (this);
@@ -275,7 +304,7 @@ Editor::Editor ()
        clicked_crossfadeview = 0;
        clicked_control_point = 0;
        last_update_frame = 0;
-       _drag = 0;
+       _drags = new DragManager (this);
        current_mixer_strip = 0;
        current_bbt_points = 0;
        tempo_lines = 0;
@@ -296,27 +325,25 @@ Editor::Editor ()
        last_autoscroll_y = 0;
        autoscroll_active = false;
        autoscroll_timeout_tag = -1;
-       interthread_progress_window = 0;
        logo_item = 0;
 
        analysis_window = 0;
 
        current_interthread_info = 0;
        _show_measures = true;
-       _show_waveforms_recording = true;
        show_gain_after_trim = false;
        verbose_cursor_on = true;
-       route_removal = false;
        last_item_entered = 0;
        last_item_entered_n = 0;
 
        have_pending_keyboard_selection = false;
        _follow_playhead = true;
+        _stationary_playhead = false;
        _xfade_visibility = true;
        editor_ruler_menu = 0;
        no_ruler_shown_update = false;
        marker_menu = 0;
-       start_end_marker_menu = 0;
+       session_range_marker_menu = 0;
        range_marker_menu = 0;
        marker_menu_item = 0;
        tm_marker_menu = 0;
@@ -367,7 +394,7 @@ Editor::Editor ()
 
        zoom_focus = ZoomFocusLeft;
        set_zoom_focus (ZoomFocusLeft);
-       zoom_range_clock.ValueChanged.connect (mem_fun(*this, &Editor::zoom_adjustment_changed));
+       zoom_range_clock.ValueChanged.connect (sigc::mem_fun(*this, &Editor::zoom_adjustment_changed));
 
        bbt_label.set_name ("EditorTimeButton");
        bbt_label.set_size_request (-1, (int)timebar_height);
@@ -432,19 +459,19 @@ Editor::Editor ()
        transport_mark_label.set_no_show_all();
 
        initialize_rulers ();
-       _summary = new EditorSummary (this);
        initialize_canvas ();
+       _summary = new EditorSummary (this);
 
-       selection->TimeChanged.connect (mem_fun(*this, &Editor::time_selection_changed));
-       selection->TracksChanged.connect (mem_fun(*this, &Editor::track_selection_changed));
-       editor_regions_selection_changed_connection = selection->RegionsChanged.connect (mem_fun(*this, &Editor::region_selection_changed));
-       selection->PointsChanged.connect (mem_fun(*this, &Editor::point_selection_changed));
-       selection->MarkersChanged.connect (mem_fun(*this, &Editor::marker_selection_changed));
+       selection->TimeChanged.connect (sigc::mem_fun(*this, &Editor::time_selection_changed));
+       selection->TracksChanged.connect (sigc::mem_fun(*this, &Editor::track_selection_changed));
+       editor_regions_selection_changed_connection = selection->RegionsChanged.connect (sigc::mem_fun(*this, &Editor::region_selection_changed));
+       selection->PointsChanged.connect (sigc::mem_fun(*this, &Editor::point_selection_changed));
+       selection->MarkersChanged.connect (sigc::mem_fun(*this, &Editor::marker_selection_changed));
 
        edit_controls_vbox.set_spacing (0);
-       horizontal_adjustment.signal_value_changed().connect (mem_fun(*this, &Editor::scroll_canvas_horizontally), false);
-       vertical_adjustment.signal_value_changed().connect (mem_fun(*this, &Editor::tie_vertical_scrolling), true);
-       track_canvas->signal_map_event().connect (mem_fun (*this, &Editor::track_canvas_map_handler));
+       horizontal_adjustment.signal_value_changed().connect (sigc::mem_fun(*this, &Editor::scroll_canvas_horizontally), false);
+       vertical_adjustment.signal_value_changed().connect (sigc::mem_fun(*this, &Editor::tie_vertical_scrolling), true);
+       track_canvas->signal_map_event().connect (sigc::mem_fun (*this, &Editor::track_canvas_map_handler));
 
        HBox* h = manage (new HBox);
        _group_tabs = new EditorGroupTabs (this);
@@ -452,15 +479,13 @@ Editor::Editor ()
        h->pack_start (edit_controls_vbox);
        controls_layout.add (*h);
 
-       ARDOUR_UI::instance()->tooltips().set_tip (*_group_tabs, _("Groups: context-click for possible operations"));
-
        controls_layout.set_name ("EditControlsBase");
        controls_layout.add_events (Gdk::SCROLL_MASK);
-       controls_layout.signal_scroll_event().connect (mem_fun(*this, &Editor::control_layout_scroll), false);
+       controls_layout.signal_scroll_event().connect (sigc::mem_fun(*this, &Editor::control_layout_scroll), false);
 
        controls_layout.add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::ENTER_NOTIFY_MASK|Gdk::LEAVE_NOTIFY_MASK);
-       controls_layout.signal_button_release_event().connect (mem_fun(*this, &Editor::edit_controls_button_release));
-       controls_layout_size_request_connection = controls_layout.signal_size_request().connect (mem_fun (*this, &Editor::controls_layout_size_request));
+       controls_layout.signal_button_release_event().connect (sigc::mem_fun(*this, &Editor::edit_controls_button_release));
+       controls_layout_size_request_connection = controls_layout.signal_size_request().connect (sigc::mem_fun (*this, &Editor::controls_layout_size_request));
 
        build_cursors ();
 
@@ -476,11 +501,11 @@ Editor::Editor ()
 
        ruler_label_event_box.add (ruler_label_vbox);
        ruler_label_event_box.set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
-       ruler_label_event_box.signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_label_button_release));
+       ruler_label_event_box.signal_button_release_event().connect (sigc::mem_fun(*this, &Editor::ruler_label_button_release));
 
        time_button_event_box.add (time_button_vbox);
        time_button_event_box.set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
-       time_button_event_box.signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_label_button_release));
+       time_button_event_box.signal_button_release_event().connect (sigc::mem_fun(*this, &Editor::ruler_label_button_release));
 
        /* these enable us to have a dedicated window (for cursor setting, etc.)
           for the canvas areas.
@@ -550,20 +575,20 @@ Editor::Editor ()
 
        Button* summary_arrows_left_left = manage (new Button);
        summary_arrows_left_left->add (*manage (new Arrow (ARROW_LEFT, SHADOW_NONE)));
-       summary_arrows_left_left->signal_clicked().connect (mem_fun (*this, &Editor::horizontal_scroll_left));
+       summary_arrows_left_left->signal_clicked().connect (sigc::mem_fun (*this, &Editor::horizontal_scroll_left));
        Button* summary_arrows_left_right = manage (new Button);
        summary_arrows_left_right->add (*manage (new Arrow (ARROW_RIGHT, SHADOW_NONE)));
-       summary_arrows_left_right->signal_clicked().connect (mem_fun (*this, &Editor::horizontal_scroll_right));
+       summary_arrows_left_right->signal_clicked().connect (sigc::mem_fun (*this, &Editor::horizontal_scroll_right));
        VBox* summary_arrows_left = manage (new VBox);
        summary_arrows_left->pack_start (*summary_arrows_left_left);
        summary_arrows_left->pack_start (*summary_arrows_left_right);
 
        Button* summary_arrows_right_left = manage (new Button);
        summary_arrows_right_left->add (*manage (new Arrow (ARROW_LEFT, SHADOW_NONE)));
-       summary_arrows_right_left->signal_clicked().connect (mem_fun (*this, &Editor::horizontal_scroll_left));
+       summary_arrows_right_left->signal_clicked().connect (sigc::mem_fun (*this, &Editor::horizontal_scroll_left));
        Button* summary_arrows_right_right = manage (new Button);
        summary_arrows_right_right->add (*manage (new Arrow (ARROW_RIGHT, SHADOW_NONE)));
-       summary_arrows_right_right->signal_clicked().connect (mem_fun (*this, &Editor::horizontal_scroll_right));
+       summary_arrows_right_right->signal_clicked().connect (sigc::mem_fun (*this, &Editor::horizontal_scroll_right));
        VBox* summary_arrows_right = manage (new VBox);
        summary_arrows_right->pack_start (*summary_arrows_right_left);
        summary_arrows_right->pack_start (*summary_arrows_right_right);
@@ -573,18 +598,20 @@ Editor::Editor ()
        summary_frame->add (*_summary);
        summary_frame->show ();
 
-       HBox* summary_hbox = manage (new HBox);
-       summary_hbox->pack_start (*summary_arrows_left, false, false);
-       summary_hbox->pack_start (*summary_frame, true, true);
-       summary_hbox->pack_start (*summary_arrows_right, false, false);
+       _summary_hbox.pack_start (*summary_arrows_left, false, false);
+       _summary_hbox.pack_start (*summary_frame, true, true);
+       _summary_hbox.pack_start (*summary_arrows_right, false, false);
        
-       editor_summary_pane->pack2(*summary_hbox);
+       editor_summary_pane->pack2 (_summary_hbox);
 
        edit_pane.pack1 (*editor_summary_pane, true, true);
        edit_pane.pack2 (the_notebook, false, true);
 
-       edit_pane.signal_size_allocate().connect (bind (mem_fun(*this, &Editor::pane_allocation_handler), static_cast<Paned*> (&edit_pane)));
-
+       edit_pane.signal_size_allocate().connect (sigc::bind (sigc::mem_fun(*this, &Editor::pane_allocation_handler), static_cast<Paned*> (&edit_pane)));
+#ifdef GTKOSX
+        Glib::PropertyProxy<int> proxy = edit_pane.property_position();
+        proxy.signal_changed().connect (bind (sigc::ptr_fun (pane_size_watcher), static_cast<Paned*> (&edit_pane)));
+#endif
        top_hbox.pack_start (toolbar_frame, false, true);
 
        HBox *hbox = manage (new HBox);
@@ -621,18 +648,15 @@ Editor::Editor ()
        set_state (*node, Stateful::loading_state_version);
 
        _playlist_selector = new PlaylistSelector();
-       _playlist_selector->signal_delete_event().connect (bind (sigc::ptr_fun (just_hide_it), static_cast<Window *> (_playlist_selector)));
+       _playlist_selector->signal_delete_event().connect (sigc::bind (sigc::ptr_fun (just_hide_it), static_cast<Window *> (_playlist_selector)));
 
-       RegionView::RegionViewGoingAway.connect (mem_fun(*this, &Editor::catch_vanishing_regionview));
+       RegionView::RegionViewGoingAway.connect (*this, invalidator (*this),  ui_bind (&Editor::catch_vanishing_regionview, this, _1), gui_context());
 
        /* nudge stuff */
 
        nudge_forward_button.add (*(manage (new Image (::get_icon("nudge_right")))));
        nudge_backward_button.add (*(manage (new Image (::get_icon("nudge_left")))));
 
-       ARDOUR_UI::instance()->tooltips().set_tip (nudge_forward_button, _("Nudge Region/Selection Forwards"));
-       ARDOUR_UI::instance()->tooltips().set_tip (nudge_backward_button, _("Nudge Region/Selection Backwards"));
-
        nudge_forward_button.set_name ("TransportButton");
        nudge_backward_button.set_name ("TransportButton");
 
@@ -668,18 +692,24 @@ Editor::Editor ()
        add (vpacker);
        add_events (Gdk::KEY_PRESS_MASK|Gdk::KEY_RELEASE_MASK);
 
-       signal_configure_event().connect (mem_fun (*ARDOUR_UI::instance(), &ARDOUR_UI::configure_handler));
-       signal_delete_event().connect (mem_fun (*ARDOUR_UI::instance(), &ARDOUR_UI::exit_on_main_window_close));
+       signal_configure_event().connect (sigc::mem_fun (*ARDOUR_UI::instance(), &ARDOUR_UI::configure_handler));
+       signal_delete_event().connect (sigc::mem_fun (*ARDOUR_UI::instance(), &ARDOUR_UI::exit_on_main_window_close));
 
        /* allow external control surfaces/protocols to do various things */
 
-       ControlProtocol::ZoomToSession.connect (mem_fun (*this, &Editor::temporal_zoom_session));
-       ControlProtocol::ZoomIn.connect (bind (mem_fun (*this, &Editor::temporal_zoom_step), false));
-       ControlProtocol::ZoomOut.connect (bind (mem_fun (*this, &Editor::temporal_zoom_step), true));
-       ControlProtocol::ScrollTimeline.connect (mem_fun (*this, &Editor::control_scroll));
-       BasicUI::AccessAction.connect (mem_fun (*this, &Editor::access_action));
+       ControlProtocol::ZoomToSession.connect (*this, invalidator (*this), boost::bind (&Editor::temporal_zoom_session, this), gui_context());
+       ControlProtocol::ZoomIn.connect (*this, invalidator (*this), boost::bind (&Editor::temporal_zoom_step, this, false), gui_context());
+       ControlProtocol::ZoomOut.connect (*this, invalidator (*this), boost::bind (&Editor::temporal_zoom_step, this, true), gui_context());
+       ControlProtocol::ScrollTimeline.connect (*this, invalidator (*this), ui_bind (&Editor::control_scroll, this, _1), gui_context());
+       BasicUI::AccessAction.connect (*this, invalidator (*this), ui_bind (&Editor::access_action, this, _1, _2), gui_context());
+       
+       /* problematic: has to return a value and thus cannot be x-thread */
+
+       Session::AskAboutPlaylistDeletion.connect_same_thread (*this, boost::bind (&Editor::playlist_deletion_dialog, this, _1));
+
+       Config->ParameterChanged.connect (*this, invalidator (*this), ui_bind (&Editor::parameter_changed, this, _1), gui_context());
 
-       Config->ParameterChanged.connect (mem_fun (*this, &Editor::parameter_changed));
+       TimeAxisView::CatchDeletion.connect (*this, invalidator (*this), ui_bind (&Editor::timeaxisview_deleted, this, _1), gui_context());
 
        _last_normalization_value = 0;
 
@@ -704,7 +734,7 @@ Editor::~Editor()
        delete _routes;
        delete _route_groups;
        delete track_canvas;
-       delete _drag;
+       delete _drags;
 }
 
 void
@@ -721,10 +751,8 @@ Editor::catch_vanishing_regionview (RegionView *rv)
           audioregionview by itself.
        */
 
-       if (_drag && rv->get_canvas_group() == _drag->item() && !_drag->ending()) {
-               _drag->end_grab (0);
-               delete _drag;
-               _drag = 0;
+       if (_drags->active() && _drags->have_item (rv->get_canvas_group()) && !_drags->ending()) {
+               _drags->abort ();
        }
 
        if (clicked_regionview == rv) {
@@ -788,6 +816,8 @@ Editor::show_window ()
                        tv = (static_cast<TimeAxisView*>(*i));
                        tv->reset_height ();
                }
+
+               reset_zoom (frames_per_unit);
        }
 
        present ();
@@ -800,8 +830,8 @@ Editor::instant_save ()
                return;
        }
 
-       if (session) {
-               session->add_instant_xml(get_state());
+       if (_session) {
+               _session->add_instant_xml(get_state());
        } else {
                Config->add_instant_xml(get_state());
        }
@@ -810,7 +840,7 @@ Editor::instant_save ()
 void
 Editor::zoom_adjustment_changed ()
 {
-       if (session == 0) {
+       if (_session == 0) {
                return;
        }
 
@@ -819,8 +849,8 @@ Editor::zoom_adjustment_changed ()
        if (fpu < 1.0) {
                fpu = 1.0;
                zoom_range_clock.set ((nframes64_t) floor (fpu * _canvas_width));
-       } else if (fpu > session->current_end_frame() / _canvas_width) {
-               fpu = session->current_end_frame() / _canvas_width;
+       } else if (fpu > _session->current_end_frame() / _canvas_width) {
+               fpu = _session->current_end_frame() / _canvas_width;
                zoom_range_clock.set ((nframes64_t) floor (fpu * _canvas_width));
        }
 
@@ -830,9 +860,9 @@ Editor::zoom_adjustment_changed ()
 void
 Editor::control_scroll (float fraction)
 {
-       ENSURE_GUI_THREAD(bind (mem_fun (*this, &Editor::control_scroll), fraction));
+       ENSURE_GUI_THREAD (*this, &Editor::control_scroll, fraction)
 
-       if (!session) {
+       if (!_session) {
                return;
        }
 
@@ -850,7 +880,7 @@ Editor::control_scroll (float fraction)
        */
 
        if (!_control_scroll_target) {
-               _control_scroll_target = session->transport_frame();
+               _control_scroll_target = _session->transport_frame();
                _dragging_playhead = true;
        }
 
@@ -886,13 +916,13 @@ Editor::control_scroll (float fraction)
 
        /* add the next timeout */
 
-       control_scroll_connection = Glib::signal_timeout().connect (bind (mem_fun (*this, &Editor::deferred_control_scroll), *_control_scroll_target), 250);
+       control_scroll_connection = Glib::signal_timeout().connect (sigc::bind (sigc::mem_fun (*this, &Editor::deferred_control_scroll), *_control_scroll_target), 250);
 }
 
 bool
 Editor::deferred_control_scroll (nframes64_t /*target*/)
 {
-       session->request_locate (*_control_scroll_target, session->transport_rolling());
+       _session->request_locate (*_control_scroll_target, _session->transport_rolling());
        // reset for next stream
        _control_scroll_target = boost::none;
        _dragging_playhead = false;
@@ -902,11 +932,11 @@ Editor::deferred_control_scroll (nframes64_t /*target*/)
 void
 Editor::access_action (std::string action_group, std::string action_item)
 {
-       if (!session) {
+       if (!_session) {
                return;
        }
 
-       ENSURE_GUI_THREAD (bind (mem_fun (*this, &Editor::access_action), action_group, action_item));
+       ENSURE_GUI_THREAD (*this, &Editor::access_action, action_group, action_item)
 
        RefPtr<Action> act;
        act = ActionManager::get_action( action_group.c_str(), action_item.c_str() );
@@ -914,8 +944,6 @@ Editor::access_action (std::string action_group, std::string action_item)
        if (act) {
                act->activate();
        }
-
-
 }
 
 void
@@ -925,26 +953,12 @@ Editor::on_realize ()
        Realized ();
 }
 
-void
-Editor::start_scrolling ()
-{
-       scroll_connection = ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect
-               (mem_fun(*this, &Editor::update_current_screen));
-
-}
-
-void
-Editor::stop_scrolling ()
-{
-       scroll_connection.disconnect ();
-}
-
 void
 Editor::map_position_change (nframes64_t frame)
 {
-       ENSURE_GUI_THREAD (bind (mem_fun(*this, &Editor::map_position_change), frame));
+       ENSURE_GUI_THREAD (*this, &Editor::map_position_change, frame)
 
-       if (session == 0 || !_follow_playhead) {
+       if (_session == 0 || !_follow_playhead) {
                return;
        }
 
@@ -982,12 +996,12 @@ Editor::center_screen_internal (nframes64_t frame, float page)
 void
 Editor::handle_new_duration ()
 {
-       if (!session) {
+       if (!_session) {
                return;
        }
 
-       ENSURE_GUI_THREAD (mem_fun (*this, &Editor::handle_new_duration));
-       nframes64_t new_end = session->current_end_frame() + (nframes64_t) floorf (current_page_frames() * 0.10f);
+       ENSURE_GUI_THREAD (*this, &Editor::handle_new_duration)
+       nframes64_t new_end = _session->current_end_frame() + (nframes64_t) floorf (current_page_frames() * 0.10f);
 
        horizontal_adjustment.set_upper (new_end / frames_per_unit);
        horizontal_adjustment.set_page_size (current_page_frames()/frames_per_unit);
@@ -998,28 +1012,20 @@ Editor::handle_new_duration ()
        //cerr << "Editor::handle_new_duration () called ha v:l:u:ps:lcf = " << horizontal_adjustment.get_value() << ":" << horizontal_adjustment.get_lower() << ":" << horizontal_adjustment.get_upper() << ":" << horizontal_adjustment.get_page_size() << ":" << endl;//DEBUG
 }
 
-void
-Editor::update_title_s (const string & snap_name)
-{
-       ENSURE_GUI_THREAD(bind (mem_fun(*this, &Editor::update_title_s), snap_name));
-
-       update_title ();
-}
-
 void
 Editor::update_title ()
 {
-       ENSURE_GUI_THREAD (mem_fun(*this, &Editor::update_title));
+       ENSURE_GUI_THREAD (*this, &Editor::update_title)
 
-       if (session) {
-               bool dirty = session->dirty();
+       if (_session) {
+               bool dirty = _session->dirty();
 
                string session_name;
 
-               if (session->snap_name() != session->name()) {
-                       session_name = session->snap_name();
+               if (_session->snap_name() != _session->name()) {
+                       session_name = _session->snap_name();
                } else {
-                       session_name = session->name();
+                       session_name = _session->name();
                }
 
                if (dirty) {
@@ -1033,14 +1039,40 @@ Editor::update_title ()
 }
 
 void
-Editor::connect_to_session (Session *t)
+Editor::set_session (Session *t)
 {
-       session = t;
+       SessionHandlePtr::set_session (t);
+
+       if (!_session) {
+               return;
+       }
+
+       zoom_range_clock.set_session (_session);
+       _playlist_selector->set_session (_session);
+       nudge_clock.set_session (_session);
+       _summary->set_session (_session);
+       _group_tabs->set_session (_session);
+       _route_groups->set_session (_session);
+       _regions->set_session (_session);
+       _snapshots->set_session (_session);
+       _routes->set_session (_session);
+       _locations->set_session (_session);
+
+       if (rhythm_ferret) {
+               rhythm_ferret->set_session (_session);
+       }
+
+       if (analysis_window) {
+               analysis_window->set_session (_session);
+       }
+
+       if (sfbrowser) {
+               sfbrowser->set_session (_session);
+       }
 
        compute_fixed_ruler_scale ();
 
        /* there are never any selected regions at startup */
-
        sensitize_the_right_region_actions (false);
 
        XMLNode* node = ARDOUR_UI::instance()->editor_settings();
@@ -1048,112 +1080,93 @@ Editor::connect_to_session (Session *t)
 
        /* catch up with the playhead */
 
-       session->request_locate (playhead_cursor->current_frame);
+       _session->request_locate (playhead_cursor->current_frame);
+       _pending_initial_locate = true;
 
        update_title ();
 
-       session->GoingAway.connect (mem_fun(*this, &Editor::session_going_away));
-       session->history().Changed.connect (mem_fun (*this, &Editor::history_changed));
-
        /* These signals can all be emitted by a non-GUI thread. Therefore the
           handlers for them must not attempt to directly interact with the GUI,
           but use Gtkmm2ext::UI::instance()->call_slot();
        */
 
-       session_connections.push_back (session->TransportStateChange.connect (mem_fun(*this, &Editor::map_transport_state)));
-       session_connections.push_back (session->PositionChanged.connect (mem_fun(*this, &Editor::map_position_change)));
-       session_connections.push_back (session->RouteAdded.connect (mem_fun(*this, &Editor::handle_new_route)));
-       session_connections.push_back (session->DurationChanged.connect (mem_fun(*this, &Editor::handle_new_duration)));
-       session_connections.push_back (session->DirtyChanged.connect (mem_fun(*this, &Editor::update_title)));
-       session_connections.push_back (session->StateSaved.connect (mem_fun(*this, &Editor::update_title_s)));
-       session_connections.push_back (session->AskAboutPlaylistDeletion.connect (mem_fun(*this, &Editor::playlist_deletion_dialog)));
-
-       session_connections.push_back (session->TimecodeOffsetChanged.connect (mem_fun(*this, &Editor::update_just_timecode)));
-
-       session_connections.push_back (session->tempo_map().StateChanged.connect (mem_fun(*this, &Editor::tempo_map_changed)));
-
-       session_connections.push_back (session->Located.connect (mem_fun (*this, &Editor::located)));
-       session_connections.push_back (session->config.ParameterChanged.connect (mem_fun (*this, &Editor::parameter_changed)));
+       _session->TransportStateChange.connect (_session_connections, invalidator (*this), boost::bind (&Editor::map_transport_state, this), gui_context());
+       _session->PositionChanged.connect (_session_connections, invalidator (*this), ui_bind (&Editor::map_position_change, this, _1), gui_context());
+       _session->RouteAdded.connect (_session_connections, invalidator (*this), ui_bind (&Editor::handle_new_route, this, _1), gui_context());
+       _session->DurationChanged.connect (_session_connections, invalidator (*this), boost::bind (&Editor::handle_new_duration, this), gui_context());
+       _session->DirtyChanged.connect (_session_connections, invalidator (*this), boost::bind (&Editor::update_title, this), gui_context());
+       _session->TimecodeOffsetChanged.connect (_session_connections, invalidator (*this), boost::bind (&Editor::update_just_timecode, this), gui_context());
+       _session->tempo_map().PropertyChanged.connect (_session_connections, invalidator (*this), ui_bind (&Editor::tempo_map_changed, this, _1), gui_context());
+       _session->Located.connect (_session_connections, invalidator (*this), boost::bind (&Editor::located, this), gui_context());
+       _session->config.ParameterChanged.connect (_session_connections, invalidator (*this), ui_bind (&Editor::parameter_changed, this, _1), gui_context());
+       _session->StateSaved.connect (_session_connections, invalidator (*this), ui_bind (&Editor::session_state_saved, this, _1), gui_context());
+       _session->locations()->added.connect (_session_connections, invalidator (*this), ui_bind (&Editor::add_new_location, this, _1), gui_context());
+       _session->locations()->removed.connect (_session_connections, invalidator (*this), ui_bind (&Editor::location_gone, this, _1), gui_context());
+       _session->locations()->changed.connect (_session_connections, invalidator (*this), boost::bind (&Editor::refresh_location_display, this), gui_context());
+       _session->locations()->StateChanged.connect (_session_connections, invalidator (*this), ui_bind (&Editor::refresh_location_display_s, this, _1), gui_context());
+       _session->locations()->session_range_location()->changed.connect (_session_connections, invalidator (*this), ui_bind (&Editor::session_range_location_changed, this, _1), gui_context());
+       _session->history().Changed.connect (_session_connections, invalidator (*this), boost::bind (&Editor::history_changed, this), gui_context());
 
-       zoom_range_clock.set_session (session);
-       _playlist_selector->set_session (session);
-       nudge_clock.set_session (session);
        if (Profile->get_sae()) {
                BBT_Time bbt;
                bbt.bars = 0;
                bbt.beats = 0;
                bbt.ticks = 120;
-               nframes_t pos = session->tempo_map().bbt_duration_at (0, bbt, 1);
+               nframes_t pos = _session->tempo_map().bbt_duration_at (0, bbt, 1);
                nudge_clock.set_mode(AudioClock::BBT);
                nudge_clock.set (pos, true, 0, AudioClock::BBT);
 
        } else {
-               nudge_clock.set (session->frame_rate() * 5, true, 0, AudioClock::Timecode); // default of 5 seconds
+               nudge_clock.set (_session->frame_rate() * 5, true, 0, AudioClock::Timecode); // default of 5 seconds
        }
 
        playhead_cursor->canvas_item.show ();
 
-       if (rhythm_ferret) {
-               rhythm_ferret->set_session (session);
-       }
-
-       if (analysis_window != 0)
-               analysis_window->set_session (session);
-
-       Location* loc = session->locations()->auto_loop_location();
+       Location* loc = _session->locations()->auto_loop_location();
        if (loc == 0) {
-               loc = new Location (0, session->current_end_frame(), _("Loop"),(Location::Flags) (Location::IsAutoLoop | Location::IsHidden));
+               loc = new Location (0, _session->current_end_frame(), _("Loop"),(Location::Flags) (Location::IsAutoLoop | Location::IsHidden));
                if (loc->start() == loc->end()) {
                        loc->set_end (loc->start() + 1);
                }
-               session->locations()->add (loc, false);
-               session->set_auto_loop_location (loc);
+               _session->locations()->add (loc, false);
+               _session->set_auto_loop_location (loc);
        } else {
                // force name
                loc->set_name (_("Loop"));
        }
 
-       loc = session->locations()->auto_punch_location();
+       loc = _session->locations()->auto_punch_location();
        if (loc == 0) {
-               loc = new Location (0, session->current_end_frame(), _("Punch"), (Location::Flags) (Location::IsAutoPunch | Location::IsHidden));
+               loc = new Location (0, _session->current_end_frame(), _("Punch"), (Location::Flags) (Location::IsAutoPunch | Location::IsHidden));
                if (loc->start() == loc->end()) {
                        loc->set_end (loc->start() + 1);
                }
-               session->locations()->add (loc, false);
-               session->set_auto_punch_location (loc);
+               _session->locations()->add (loc, false);
+               _session->set_auto_punch_location (loc);
        } else {
                // force name
                loc->set_name (_("Punch"));
        }
 
-       Config->map_parameters (mem_fun (*this, &Editor::parameter_changed));
-       session->config.map_parameters (mem_fun (*this, &Editor::parameter_changed));
-
-       session->StateSaved.connect (mem_fun(*this, &Editor::session_state_saved));
+       boost::function<void (string)> pc (boost::bind (&Editor::parameter_changed, this, _1));
+       Config->map_parameters (pc);
+       _session->config.map_parameters (pc);
 
        refresh_location_display ();
-       session->locations()->added.connect (mem_fun(*this, &Editor::add_new_location));
-       session->locations()->removed.connect (mem_fun(*this, &Editor::location_gone));
-       session->locations()->changed.connect (mem_fun(*this, &Editor::refresh_location_display));
-       session->locations()->StateChanged.connect (mem_fun(*this, &Editor::refresh_location_display_s));
-       session->locations()->end_location()->changed.connect (mem_fun(*this, &Editor::end_location_changed));
-
-       if (sfbrowser) {
-               sfbrowser->set_session (session);
-       }
-
        handle_new_duration ();
 
        restore_ruler_visibility ();
-       //tempo_map_changed (Change (0));
-       session->tempo_map().apply_with_metrics (*this, &Editor::draw_metric_marks);
+       //tempo_map_changed (PropertyChange (0));
+       _session->tempo_map().apply_with_metrics (*this, &Editor::draw_metric_marks);
 
        for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
                (static_cast<TimeAxisView*>(*i))->set_samples_per_unit (frames_per_unit);
        }
 
-       start_scrolling ();
-
+       super_rapid_screen_update_connection = ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect (
+               sigc::mem_fun (*this, &Editor::super_rapid_screen_update)
+               );
+       
        switch (_snap_type) {
        case SnapToRegionStart:
        case SnapToRegionEnd:
@@ -1167,17 +1180,9 @@ Editor::connect_to_session (Session *t)
        }
 
        /* register for undo history */
-       session->register_with_memento_command_factory(_id, this);
-
-       _summary->connect_to_session (session);
-       _group_tabs->connect_to_session (session);
-       _route_groups->connect_to_session (session);
-       _regions->connect_to_session (session);
-       _snapshots->connect_to_session (session);
-       _routes->connect_to_session (session);
-       _locations->connect_to_session (session);
+       _session->register_with_memento_command_factory(_id, this);
 
-       start_updating ();
+       start_updating_meters ();
 }
 
 void
@@ -1269,22 +1274,22 @@ Editor::popup_fade_context_menu (int button, int32_t time, ArdourCanvas::Item* i
        case FadeInItem:
        case FadeInHandleItem:
                if (arv->audio_region()->fade_in_active()) {
-                       items.push_back (MenuElem (_("Deactivate"), bind (mem_fun (*this, &Editor::set_fade_in_active), false)));
+                       items.push_back (MenuElem (_("Deactivate"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_active), false)));
                } else {
-                       items.push_back (MenuElem (_("Activate"), bind (mem_fun (*this, &Editor::set_fade_in_active), true)));
+                       items.push_back (MenuElem (_("Activate"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_active), true)));
                }
 
                items.push_back (SeparatorElem());
 
                if (Profile->get_sae()) {
-                       items.push_back (MenuElem (_("Linear"), bind (mem_fun (*this, &Editor::set_fade_in_shape), AudioRegion::Linear)));
-                       items.push_back (MenuElem (_("Slowest"), bind (mem_fun (*this, &Editor::set_fade_in_shape), AudioRegion::Fast)));
+                       items.push_back (MenuElem (_("Linear"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), AudioRegion::Linear)));
+                       items.push_back (MenuElem (_("Slowest"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), AudioRegion::Fast)));
                } else {
-                       items.push_back (MenuElem (_("Linear"), bind (mem_fun (*this, &Editor::set_fade_in_shape), AudioRegion::Linear)));
-                       items.push_back (MenuElem (_("Slowest"), bind (mem_fun (*this, &Editor::set_fade_in_shape), AudioRegion::Fast)));
-                       items.push_back (MenuElem (_("Slow"), bind (mem_fun (*this, &Editor::set_fade_in_shape), AudioRegion::LogB)));
-                       items.push_back (MenuElem (_("Fast"), bind (mem_fun (*this, &Editor::set_fade_in_shape), AudioRegion::LogA)));
-                       items.push_back (MenuElem (_("Fastest"), bind (mem_fun (*this, &Editor::set_fade_in_shape), AudioRegion::Slow)));
+                       items.push_back (MenuElem (_("Linear"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), AudioRegion::Linear)));
+                       items.push_back (MenuElem (_("Slowest"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), AudioRegion::Fast)));
+                       items.push_back (MenuElem (_("Slow"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), AudioRegion::LogB)));
+                       items.push_back (MenuElem (_("Fast"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), AudioRegion::LogA)));
+                       items.push_back (MenuElem (_("Fastest"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), AudioRegion::Slow)));
                }
 
                break;
@@ -1292,22 +1297,22 @@ Editor::popup_fade_context_menu (int button, int32_t time, ArdourCanvas::Item* i
        case FadeOutItem:
        case FadeOutHandleItem:
                if (arv->audio_region()->fade_out_active()) {
-                       items.push_back (MenuElem (_("Deactivate"), bind (mem_fun (*this, &Editor::set_fade_out_active), false)));
+                       items.push_back (MenuElem (_("Deactivate"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_active), false)));
                } else {
-                       items.push_back (MenuElem (_("Activate"), bind (mem_fun (*this, &Editor::set_fade_out_active), true)));
+                       items.push_back (MenuElem (_("Activate"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_active), true)));
                }
 
                items.push_back (SeparatorElem());
 
                if (Profile->get_sae()) {
-                       items.push_back (MenuElem (_("Linear"), bind (mem_fun (*this, &Editor::set_fade_out_shape), AudioRegion::Linear)));
-                       items.push_back (MenuElem (_("Slowest"), bind (mem_fun (*this, &Editor::set_fade_out_shape), AudioRegion::Slow)));
+                       items.push_back (MenuElem (_("Linear"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), AudioRegion::Linear)));
+                       items.push_back (MenuElem (_("Slowest"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), AudioRegion::Slow)));
                } else {
-                       items.push_back (MenuElem (_("Linear"), bind (mem_fun (*this, &Editor::set_fade_out_shape), AudioRegion::Linear)));
-                       items.push_back (MenuElem (_("Slowest"), bind (mem_fun (*this, &Editor::set_fade_out_shape), AudioRegion::Slow)));
-                       items.push_back (MenuElem (_("Slow"), bind (mem_fun (*this, &Editor::set_fade_out_shape), AudioRegion::LogA)));
-                       items.push_back (MenuElem (_("Fast"), bind (mem_fun (*this, &Editor::set_fade_out_shape), AudioRegion::LogB)));
-                       items.push_back (MenuElem (_("Fastest"), bind (mem_fun (*this, &Editor::set_fade_out_shape), AudioRegion::Fast)));
+                       items.push_back (MenuElem (_("Linear"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), AudioRegion::Linear)));
+                       items.push_back (MenuElem (_("Slowest"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), AudioRegion::Slow)));
+                       items.push_back (MenuElem (_("Slow"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), AudioRegion::LogA)));
+                       items.push_back (MenuElem (_("Fast"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), AudioRegion::LogB)));
+                       items.push_back (MenuElem (_("Fastest"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), AudioRegion::Fast)));
                }
 
                break;
@@ -1353,7 +1358,7 @@ Editor::popup_track_context_menu (int button, int32_t time, ItemType item_type,
                break;
 
        case StreamItem:
-               if (clicked_routeview->get_diskstream()) {
+               if (clicked_routeview->track()) {
                        build_menu_function = &Editor::build_track_context_menu;
                } else {
                        build_menu_function = &Editor::build_track_bus_context_menu;
@@ -1420,15 +1425,15 @@ Editor::popup_track_context_menu (int button, int32_t time, ItemType item_type,
 
                switch (clicked_routeview->audio_track()->freeze_state()) {
                case AudioTrack::NoFreeze:
-                       edit_items.push_back (MenuElem (_("Freeze"), mem_fun(*this, &Editor::freeze_route)));
+                       edit_items.push_back (MenuElem (_("Freeze"), sigc::mem_fun(*this, &Editor::freeze_route)));
                        break;
 
                case AudioTrack::Frozen:
-                       edit_items.push_back (MenuElem (_("Unfreeze"), mem_fun(*this, &Editor::unfreeze_route)));
+                       edit_items.push_back (MenuElem (_("Unfreeze"), sigc::mem_fun(*this, &Editor::unfreeze_route)));
                        break;
 
                case AudioTrack::UnFrozen:
-                       edit_items.push_back (MenuElem (_("Freeze"), mem_fun(*this, &Editor::freeze_route)));
+                       edit_items.push_back (MenuElem (_("Freeze"), sigc::mem_fun(*this, &Editor::freeze_route)));
                        break;
                }
 
@@ -1475,11 +1480,11 @@ Editor::build_track_region_context_menu (nframes64_t frame)
        RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (clicked_axisview);
 
        if (rtv) {
-               boost::shared_ptr<Diskstream> ds;
+               boost::shared_ptr<Track> tr;
                boost::shared_ptr<Playlist> pl;
 
-               if ((ds = rtv->get_diskstream()) && ((pl = ds->playlist()))) {
-                       Playlist::RegionList* regions = pl->regions_at ((nframes64_t) floor ( (double)frame * ds->speed()));
+               if ((tr = rtv->track()) && ((pl = tr->playlist()))) {
+                       Playlist::RegionList* regions = pl->regions_at ((nframes64_t) floor ( (double)frame * tr->speed()));
 
                        if (selection->regions.size() > 1) {
                                // there's already a multiple selection: just add a
@@ -1488,7 +1493,7 @@ Editor::build_track_region_context_menu (nframes64_t frame)
                                boost::shared_ptr<Region> dummy_region; // = NULL
                                add_region_context_items (rtv->view(), dummy_region, edit_items);
                        } else {
-                               for (Playlist::RegionList::iterator i = regions->begin(); i != regions->end(); ++i) {
+                               for (Playlist::RegionList::reverse_iterator i = regions->rbegin(); i != regions->rend(); ++i) {
                                        add_region_context_items (rtv->view(), (*i), edit_items);
                                }
                        }
@@ -1512,11 +1517,11 @@ Editor::build_track_crossfade_context_menu (nframes64_t frame)
        AudioTimeAxisView* atv = dynamic_cast<AudioTimeAxisView*> (clicked_axisview);
 
        if (atv) {
-               boost::shared_ptr<Diskstream> ds;
+               boost::shared_ptr<Track> tr;
                boost::shared_ptr<Playlist> pl;
                boost::shared_ptr<AudioPlaylist> apl;
 
-               if ((ds = atv->get_diskstream()) && ((pl = ds->playlist()) != 0) && ((apl = boost::dynamic_pointer_cast<AudioPlaylist> (pl)) != 0)) {
+               if ((tr = atv->track()) && ((pl = tr->playlist()) != 0) && ((apl = boost::dynamic_pointer_cast<AudioPlaylist> (pl)) != 0)) {
 
                        Playlist::RegionList* regions = pl->regions_at (frame);
                        AudioPlaylist::Crossfades xfades;
@@ -1536,7 +1541,7 @@ Editor::build_track_crossfade_context_menu (nframes64_t frame)
                                boost::shared_ptr<Region> dummy_region; // = NULL
                                add_region_context_items (atv->audio_view(), dummy_region, edit_items);
                        } else {
-                               for (Playlist::RegionList::iterator i = regions->begin(); i != regions->end(); ++i) {
+                               for (Playlist::RegionList::reverse_iterator i = regions->rbegin(); i != regions->rend(); ++i) {
                                        add_region_context_items (atv->audio_view(), (*i), edit_items);
                                }
                        }
@@ -1555,8 +1560,8 @@ Editor::analyze_region_selection()
        if (analysis_window == 0) {
                analysis_window = new AnalysisWindow();
 
-               if (session != 0)
-                       analysis_window->set_session(session);
+               if (_session != 0)
+                       analysis_window->set_session(_session);
 
                analysis_window->show_all();
        }
@@ -1573,8 +1578,8 @@ Editor::analyze_range_selection()
        if (analysis_window == 0) {
                analysis_window = new AnalysisWindow();
 
-               if (session != 0)
-                       analysis_window->set_session(session);
+               if (_session != 0)
+                       analysis_window->set_session(_session);
 
                analysis_window->show_all();
        }
@@ -1617,18 +1622,18 @@ Editor::add_crossfade_context_items (AudioStreamView* /*view*/, boost::shared_pt
                str = _("Unmute");
        }
 
-       items.push_back (MenuElem (str, bind (mem_fun(*this, &Editor::toggle_xfade_active), boost::weak_ptr<Crossfade> (xfade))));
-       items.push_back (MenuElem (_("Edit"), bind (mem_fun(*this, &Editor::edit_xfade), boost::weak_ptr<Crossfade> (xfade))));
+       items.push_back (MenuElem (str, sigc::bind (sigc::mem_fun(*this, &Editor::toggle_xfade_active), boost::weak_ptr<Crossfade> (xfade))));
+       items.push_back (MenuElem (_("Edit"), sigc::bind (sigc::mem_fun(*this, &Editor::edit_xfade), boost::weak_ptr<Crossfade> (xfade))));
 
        if (xfade->can_follow_overlap()) {
 
                if (xfade->following_overlap()) {
-                       str = _("Convert to short");
+                       str = _("Convert to Short");
                } else {
-                       str = _("Convert to full");
+                       str = _("Convert to Full");
                }
 
-               items.push_back (MenuElem (str, bind (mem_fun(*this, &Editor::toggle_xfade_length), xfade)));
+               items.push_back (MenuElem (str, sigc::bind (sigc::mem_fun(*this, &Editor::toggle_xfade_length), xfade)));
        }
 
        if (many) {
@@ -1680,32 +1685,32 @@ Editor::add_region_context_items (StreamView* sv, boost::shared_ptr<Region> regi
                */
 
                region_menu->signal_map_event().connect (
-                       bind (mem_fun(*this, &Editor::set_selected_regionview_from_map_event), sv, boost::weak_ptr<Region>(region)));
+                       sigc::bind (sigc::mem_fun(*this, &Editor::set_selected_regionview_from_map_event), sv, boost::weak_ptr<Region>(region)));
 
-               items.push_back (MenuElem (_("Rename"), mem_fun(*this, &Editor::rename_region)));
+               items.push_back (MenuElem (_("Rename..."), sigc::mem_fun(*this, &Editor::rename_region)));
                if (mr && internal_editing()) {
-                       items.push_back (MenuElem (_("List editor..."), mem_fun(*this, &Editor::show_midi_list_editor)));
+                       items.push_back (MenuElem (_("List editor..."), sigc::mem_fun(*this, &Editor::show_midi_list_editor)));
                } else {
-                       items.push_back (MenuElem (_("Region editor"), mem_fun(*this, &Editor::edit_region)));
+                       items.push_back (MenuElem (_("Region Properties..."), sigc::mem_fun(*this, &Editor::edit_region)));
                }
        }
 
-       items.push_back (MenuElem (_("Raise to top layer"), mem_fun(*this, &Editor::raise_region_to_top)));
-       items.push_back (MenuElem (_("Lower to bottom layer"), mem_fun  (*this, &Editor::lower_region_to_bottom)));
+       items.push_back (MenuElem (_("Raise to Top Layer"), sigc::mem_fun(*this, &Editor::raise_region_to_top)));
+       items.push_back (MenuElem (_("Lower to Bottom Layer"), sigc::mem_fun  (*this, &Editor::lower_region_to_bottom)));
        items.push_back (SeparatorElem());
-       items.push_back (MenuElem (_("Define sync point"), mem_fun(*this, &Editor::set_region_sync_from_edit_point)));
+       items.push_back (MenuElem (_("Define Sync Point"), sigc::mem_fun(*this, &Editor::set_region_sync_from_edit_point)));
        if (_edit_point == EditAtMouse) {
                items.back ().set_sensitive (false);
        }
-       items.push_back (MenuElem (_("Remove sync point"), mem_fun(*this, &Editor::remove_region_sync)));
+       items.push_back (MenuElem (_("Remove Sync Point"), sigc::mem_fun(*this, &Editor::remove_region_sync)));
        items.push_back (SeparatorElem());
 
-       items.push_back (MenuElem (_("Audition"), mem_fun(*this, &Editor::play_selected_region)));
-       items.push_back (MenuElem (_("Export"), mem_fun(*this, &Editor::export_region)));
-       items.push_back (MenuElem (_("Bounce"), mem_fun(*this, &Editor::bounce_region_selection)));
+       items.push_back (MenuElem (_("Audition"), sigc::mem_fun(*this, &Editor::play_selected_region)));
+       items.push_back (MenuElem (_("Export"), sigc::mem_fun(*this, &Editor::export_region)));
+       items.push_back (MenuElem (_("Bounce"), sigc::mem_fun(*this, &Editor::bounce_region_selection)));
 
        if (ar) {
-               items.push_back (MenuElem (_("Spectral Analysis"), mem_fun(*this, &Editor::analyze_region_selection)));
+               items.push_back (MenuElem (_("Spectral Analysis"), sigc::mem_fun(*this, &Editor::analyze_region_selection)));
        }
 
        items.push_back (SeparatorElem());
@@ -1724,9 +1729,9 @@ Editor::add_region_context_items (StreamView* sv, boost::shared_ptr<Region> regi
        if (region_to_check->locked()) {
                region_lock_item->set_active();
        }
-       region_lock_item->signal_activate().connect (mem_fun(*this, &Editor::toggle_region_lock));
+       region_lock_item->signal_activate().connect (sigc::mem_fun(*this, &Editor::toggle_region_lock));
 
-       items.push_back (CheckMenuElem (_("Glue to Bars&Beats")));
+       items.push_back (CheckMenuElem (_("Glue to Bars and Beats")));
        CheckMenuItem* bbt_glue_item = static_cast<CheckMenuItem*>(&items.back());
 
        switch (region_to_check->positional_lock_style()) {
@@ -1738,21 +1743,23 @@ Editor::add_region_context_items (StreamView* sv, boost::shared_ptr<Region> regi
                break;
        }
 
-       bbt_glue_item->signal_activate().connect (bind (mem_fun (*this, &Editor::set_region_lock_style), Region::MusicTime));
+       bbt_glue_item->signal_activate().connect (sigc::bind (sigc::mem_fun (*this, &Editor::set_region_lock_style), Region::MusicTime));
 
        items.push_back (CheckMenuElem (_("Mute")));
        CheckMenuItem* region_mute_item = static_cast<CheckMenuItem*>(&items.back());
-       fooc = region_mute_item->signal_activate().connect (mem_fun(*this, &Editor::toggle_region_mute));
+       fooc = region_mute_item->signal_activate().connect (sigc::mem_fun(*this, &Editor::toggle_region_mute));
        if (region_to_check->muted()) {
                fooc.block (true);
                region_mute_item->set_active();
                fooc.block (false);
        }
+        
+        items.push_back (MenuElem (_("Transpose"), mem_fun(*this, &Editor::pitch_shift_regions)));
 
        if (!Profile->get_sae()) {
                items.push_back (CheckMenuElem (_("Opaque")));
                CheckMenuItem* region_opaque_item = static_cast<CheckMenuItem*>(&items.back());
-               fooc = region_opaque_item->signal_activate().connect (mem_fun(*this, &Editor::toggle_region_opaque));
+               fooc = region_opaque_item->signal_activate().connect (sigc::mem_fun(*this, &Editor::toggle_region_opaque));
                if (region_to_check->opaque()) {
                        fooc.block (true);
                        region_opaque_item->set_active();
@@ -1760,7 +1767,7 @@ Editor::add_region_context_items (StreamView* sv, boost::shared_ptr<Region> regi
                }
        }
 
-       items.push_back (CheckMenuElem (_("Original position"), mem_fun(*this, &Editor::naturalize)));
+       items.push_back (CheckMenuElem (_("Original Position"), sigc::mem_fun(*this, &Editor::naturalize)));
        if (region_to_check->at_natural_position()) {
                items.back().set_sensitive (false);
        }
@@ -1773,11 +1780,11 @@ Editor::add_region_context_items (StreamView* sv, boost::shared_ptr<Region> regi
                AudioRegionView* arv = dynamic_cast<AudioRegionView*>(rv);
 
                if (!Profile->get_sae()) {
-                       items.push_back (MenuElem (_("Reset Envelope"), mem_fun(*this, &Editor::reset_region_gain_envelopes)));
+                       items.push_back (MenuElem (_("Reset Envelope"), sigc::mem_fun(*this, &Editor::reset_region_gain_envelopes)));
 
                        items.push_back (CheckMenuElem (_("Envelope Visible")));
                        CheckMenuItem* region_envelope_visible_item = static_cast<CheckMenuItem*> (&items.back());
-                       fooc = region_envelope_visible_item->signal_activate().connect (mem_fun(*this, &Editor::toggle_gain_envelope_visibility));
+                       fooc = region_envelope_visible_item->signal_activate().connect (sigc::mem_fun(*this, &Editor::toggle_gain_envelope_visibility));
                        if (arv->envelope_visible()) {
                                fooc.block (true);
                                region_envelope_visible_item->set_active (true);
@@ -1786,7 +1793,7 @@ Editor::add_region_context_items (StreamView* sv, boost::shared_ptr<Region> regi
 
                        items.push_back (CheckMenuElem (_("Envelope Active")));
                        CheckMenuItem* region_envelope_active_item = static_cast<CheckMenuItem*> (&items.back());
-                       fooc = region_envelope_active_item->signal_activate().connect (mem_fun(*this, &Editor::toggle_gain_envelope_active));
+                       fooc = region_envelope_active_item->signal_activate().connect (sigc::mem_fun(*this, &Editor::toggle_gain_envelope_active));
 
                        if (ar->envelope_active()) {
                                fooc.block (true);
@@ -1797,29 +1804,29 @@ Editor::add_region_context_items (StreamView* sv, boost::shared_ptr<Region> regi
                        items.push_back (SeparatorElem());
                }
 
-               items.push_back (MenuElem (_("Normalize"), mem_fun(*this, &Editor::normalize_region)));
+               items.push_back (MenuElem (_("Normalize"), sigc::mem_fun(*this, &Editor::normalize_region)));
                if (ar->scale_amplitude() != 1) {
-                       items.push_back (MenuElem (_("Reset Gain"), mem_fun(*this, &Editor::reset_region_scale_amplitude)));
+                       items.push_back (MenuElem (_("Reset Gain"), sigc::mem_fun(*this, &Editor::reset_region_scale_amplitude)));
                }
 
        } else if (mr) {
-               items.push_back (MenuElem (_("Quantize"), mem_fun(*this, &Editor::quantize_region)));
+               items.push_back (MenuElem (_("Quantize"), sigc::mem_fun(*this, &Editor::quantize_region)));
                items.push_back (SeparatorElem());
        }
 
-       items.push_back (MenuElem (_("Strip Silence..."), mem_fun (*this, &Editor::strip_region_silence)));
-       items.push_back (MenuElem (_("Reverse"), mem_fun(*this, &Editor::reverse_region)));
+       items.push_back (MenuElem (_("Strip Silence..."), sigc::mem_fun (*this, &Editor::strip_region_silence)));
+       items.push_back (MenuElem (_("Reverse"), sigc::mem_fun(*this, &Editor::reverse_region)));
        items.push_back (SeparatorElem());
 
        /* range related stuff */
 
-       items.push_back (MenuElem (_("Add Single Range"), mem_fun (*this, &Editor::add_location_from_audio_region)));
-       items.push_back (MenuElem (_("Add Range Markers"), mem_fun (*this, &Editor::add_locations_from_audio_region)));
+       items.push_back (MenuElem (_("Add Single Range"), sigc::mem_fun (*this, &Editor::add_location_from_audio_region)));
+       items.push_back (MenuElem (_("Add Range Markers"), sigc::mem_fun (*this, &Editor::add_locations_from_audio_region)));
        if (selection->regions.size() < 2) {
                items.back().set_sensitive (false);
        }
 
-       items.push_back (MenuElem (_("Set Range Selection"), mem_fun (*this, &Editor::set_selection_from_region)));
+       items.push_back (MenuElem (_("Set Range Selection"), sigc::mem_fun (*this, &Editor::set_selection_from_region)));
        items.push_back (SeparatorElem());
 
        /* Nudge region */
@@ -1828,10 +1835,10 @@ Editor::add_region_context_items (StreamView* sv, boost::shared_ptr<Region> regi
        MenuList& nudge_items = nudge_menu->items();
        nudge_menu->set_name ("ArdourContextMenu");
 
-       nudge_items.push_back (MenuElem (_("Nudge fwd"), (bind (mem_fun(*this, &Editor::nudge_forward), false, false))));
-       nudge_items.push_back (MenuElem (_("Nudge bwd"), (bind (mem_fun(*this, &Editor::nudge_backward), false, false))));
-       nudge_items.push_back (MenuElem (_("Nudge fwd by capture offset"), (mem_fun(*this, &Editor::nudge_forward_capture_offset))));
-       nudge_items.push_back (MenuElem (_("Nudge bwd by capture offset"), (mem_fun(*this, &Editor::nudge_backward_capture_offset))));
+       nudge_items.push_back (MenuElem (_("Nudge Forward"), (sigc::bind (sigc::mem_fun(*this, &Editor::nudge_forward), false, false))));
+       nudge_items.push_back (MenuElem (_("Nudge Backward"), (sigc::bind (sigc::mem_fun(*this, &Editor::nudge_backward), false, false))));
+       nudge_items.push_back (MenuElem (_("Nudge Forward by Capture Offset"), (sigc::mem_fun(*this, &Editor::nudge_forward_capture_offset))));
+       nudge_items.push_back (MenuElem (_("Nudge Backward by Capture Offset"), (sigc::mem_fun(*this, &Editor::nudge_backward_capture_offset))));
 
        items.push_back (MenuElem (_("Nudge"), *nudge_menu));
        items.push_back (SeparatorElem());
@@ -1840,37 +1847,37 @@ Editor::add_region_context_items (StreamView* sv, boost::shared_ptr<Region> regi
        MenuList& trim_items = trim_menu->items();
        trim_menu->set_name ("ArdourContextMenu");
 
-       trim_items.push_back (MenuElem (_("Start to edit point"), mem_fun(*this, &Editor::trim_region_from_edit_point)));
+       trim_items.push_back (MenuElem (_("Start to Edit Point"), sigc::mem_fun(*this, &Editor::trim_region_from_edit_point)));
        foo_item = &trim_items.back();
        if (_edit_point == EditAtMouse) {
                foo_item->set_sensitive (false);
        }
-       trim_items.push_back (MenuElem (_("Edit point to end"), mem_fun(*this, &Editor::trim_region_to_edit_point)));
+       trim_items.push_back (MenuElem (_("Edit Point to End"), sigc::mem_fun(*this, &Editor::trim_region_to_edit_point)));
        foo_item = &trim_items.back();
        if (_edit_point == EditAtMouse) {
                foo_item->set_sensitive (false);
        }
-       trim_items.push_back (MenuElem (_("Trim To Loop"), mem_fun(*this, &Editor::trim_region_to_loop)));
-       trim_items.push_back (MenuElem (_("Trim To Punch"), mem_fun(*this, &Editor::trim_region_to_punch)));
+       trim_items.push_back (MenuElem (_("Trim to Loop"), sigc::mem_fun(*this, &Editor::trim_region_to_loop)));
+       trim_items.push_back (MenuElem (_("Trim to Punch"), sigc::mem_fun(*this, &Editor::trim_region_to_punch)));
 
        items.push_back (MenuElem (_("Trim"), *trim_menu));
        items.push_back (SeparatorElem());
 
-       items.push_back (MenuElem (_("Split"), (mem_fun(*this, &Editor::split))));
+       items.push_back (MenuElem (_("Split"), (sigc::mem_fun(*this, &Editor::split))));
        region_edit_menu_split_item = &items.back();
 
        if (_edit_point == EditAtMouse) {
                region_edit_menu_split_item->set_sensitive (false);
        }
 
-       items.push_back (MenuElem (_("Make mono regions"), (mem_fun(*this, &Editor::split_multichannel_region))));
+       items.push_back (MenuElem (_("Make Mono Regions"), (sigc::mem_fun(*this, &Editor::split_multichannel_region))));
        region_edit_menu_split_multichannel_item = &items.back();
 
-       items.push_back (MenuElem (_("Duplicate"), (bind (mem_fun(*this, &Editor::duplicate_dialog), false))));
-       items.push_back (MenuElem (_("Multi-Duplicate"), (bind (mem_fun(*this, &Editor::duplicate_dialog), true))));
-       items.push_back (MenuElem (_("Fill Track"), (mem_fun(*this, &Editor::region_fill_track))));
+       items.push_back (MenuElem (_("Duplicate"), (sigc::bind (sigc::mem_fun(*this, &Editor::duplicate_dialog), false))));
+       items.push_back (MenuElem (_("Multi-Duplicate"), (sigc::bind (sigc::mem_fun(*this, &Editor::duplicate_dialog), true))));
+       items.push_back (MenuElem (_("Fill Track"), (sigc::mem_fun(*this, &Editor::region_fill_track))));
        items.push_back (SeparatorElem());
-       items.push_back (MenuElem (_("Remove"), mem_fun(*this, &Editor::remove_selected_regions)));
+       items.push_back (MenuElem (_("Remove"), sigc::mem_fun(*this, &Editor::remove_selected_regions)));
 
        /* OK, stick the region submenu at the top of the list, and then add
           the standard items.
@@ -1881,7 +1888,7 @@ Editor::add_region_context_items (StreamView* sv, boost::shared_ptr<Region> regi
        */
 
        string::size_type pos = 0;
-       string menu_item_name = (region) ? region->name() : _("Selected regions");
+       string menu_item_name = (region) ? region->name() : _("Selected Regions");
 
        while ((pos = menu_item_name.find ("_", pos)) != string::npos) {
                menu_item_name.replace (pos, 1, "__");
@@ -1900,43 +1907,43 @@ Editor::add_selection_context_items (Menu_Helpers::MenuList& edit_items)
 {
        using namespace Menu_Helpers;
 
-       edit_items.push_back (MenuElem (_("Play Range"), mem_fun(*this, &Editor::play_selection)));
-       edit_items.push_back (MenuElem (_("Loop Range"), bind (mem_fun(*this, &Editor::set_loop_from_selection), true)));
+       edit_items.push_back (MenuElem (_("Play Range"), sigc::mem_fun(*this, &Editor::play_selection)));
+       edit_items.push_back (MenuElem (_("Loop Range"), sigc::bind (sigc::mem_fun(*this, &Editor::set_loop_from_selection), true)));
 
        edit_items.push_back (SeparatorElem());
-       edit_items.push_back (MenuElem (_("Spectral Analysis"), mem_fun(*this, &Editor::analyze_range_selection)));
+       edit_items.push_back (MenuElem (_("Spectral Analysis"), sigc::mem_fun(*this, &Editor::analyze_range_selection)));
 
        if (!selection->regions.empty()) {
                edit_items.push_back (SeparatorElem());
-               edit_items.push_back (MenuElem (_("Extend Range to End of Region"), bind (mem_fun(*this, &Editor::extend_selection_to_end_of_region), false)));
-               edit_items.push_back (MenuElem (_("Extend Range to Start of Region"), bind (mem_fun(*this, &Editor::extend_selection_to_start_of_region), false)));
+               edit_items.push_back (MenuElem (_("Extend Range to End of Region"), sigc::bind (sigc::mem_fun(*this, &Editor::extend_selection_to_end_of_region), false)));
+               edit_items.push_back (MenuElem (_("Extend Range to Start of Region"), sigc::bind (sigc::mem_fun(*this, &Editor::extend_selection_to_start_of_region), false)));
        }
 
        edit_items.push_back (SeparatorElem());
-       edit_items.push_back (MenuElem (_("Silence Range"), mem_fun(*this, &Editor::separate_region_from_selection)));
-       edit_items.push_back (MenuElem (_("Convert to Region in Region List"), mem_fun(*this, &Editor::new_region_from_selection)));
+       edit_items.push_back (MenuElem (_("Silence Range"), sigc::mem_fun(*this, &Editor::separate_region_from_selection)));
+       edit_items.push_back (MenuElem (_("Convert to Region in Region List"), sigc::mem_fun(*this, &Editor::new_region_from_selection)));
 
        edit_items.push_back (SeparatorElem());
-       edit_items.push_back (MenuElem (_("Select All in Range"), mem_fun(*this, &Editor::select_all_selectables_using_time_selection)));
+       edit_items.push_back (MenuElem (_("Select All in Range"), sigc::mem_fun(*this, &Editor::select_all_selectables_using_time_selection)));
 
        edit_items.push_back (SeparatorElem());
-       edit_items.push_back (MenuElem (_("Set Loop from Range"), bind (mem_fun(*this, &Editor::set_loop_from_selection), false)));
-       edit_items.push_back (MenuElem (_("Set Punch from Range"), mem_fun(*this, &Editor::set_punch_from_selection)));
+       edit_items.push_back (MenuElem (_("Set Loop from Range"), sigc::bind (sigc::mem_fun(*this, &Editor::set_loop_from_selection), false)));
+       edit_items.push_back (MenuElem (_("Set Punch from Range"), sigc::mem_fun(*this, &Editor::set_punch_from_selection)));
 
        edit_items.push_back (SeparatorElem());
-       edit_items.push_back (MenuElem (_("Add Range Markers"), mem_fun (*this, &Editor::add_location_from_selection)));
+       edit_items.push_back (MenuElem (_("Add Range Markers"), sigc::mem_fun (*this, &Editor::add_location_from_selection)));
 
        edit_items.push_back (SeparatorElem());
-       edit_items.push_back (MenuElem (_("Crop Region to Range"), mem_fun(*this, &Editor::crop_region_to_selection)));
-       edit_items.push_back (MenuElem (_("Fill Range with Region"), mem_fun(*this, &Editor::region_fill_selection)));
-       edit_items.push_back (MenuElem (_("Duplicate Range"), bind (mem_fun(*this, &Editor::duplicate_dialog), false)));
+       edit_items.push_back (MenuElem (_("Crop Region to Range"), sigc::mem_fun(*this, &Editor::crop_region_to_selection)));
+       edit_items.push_back (MenuElem (_("Fill Range with Region"), sigc::mem_fun(*this, &Editor::region_fill_selection)));
+       edit_items.push_back (MenuElem (_("Duplicate Range"), sigc::bind (sigc::mem_fun(*this, &Editor::duplicate_dialog), false)));
 
        edit_items.push_back (SeparatorElem());
-       edit_items.push_back (MenuElem (_("Consolidate Range"), bind (mem_fun(*this, &Editor::bounce_range_selection), true, false)));
-       edit_items.push_back (MenuElem (_("Consolidate Range With Processing"), bind (mem_fun(*this, &Editor::bounce_range_selection), true, true)));
-       edit_items.push_back (MenuElem (_("Bounce Range to Region List"), bind (mem_fun(*this, &Editor::bounce_range_selection), false, false)));
-       edit_items.push_back (MenuElem (_("Bounce Range to Region List With Processing"), bind (mem_fun(*this, &Editor::bounce_range_selection), false, true)));
-       edit_items.push_back (MenuElem (_("Export Range"), mem_fun(*this, &Editor::export_range)));
+       edit_items.push_back (MenuElem (_("Consolidate Range"), sigc::bind (sigc::mem_fun(*this, &Editor::bounce_range_selection), true, false)));
+       edit_items.push_back (MenuElem (_("Consolidate Range With Processing"), sigc::bind (sigc::mem_fun(*this, &Editor::bounce_range_selection), true, true)));
+       edit_items.push_back (MenuElem (_("Bounce Range to Region List"), sigc::bind (sigc::mem_fun(*this, &Editor::bounce_range_selection), false, false)));
+       edit_items.push_back (MenuElem (_("Bounce Range to Region List With Processing"), sigc::bind (sigc::mem_fun(*this, &Editor::bounce_range_selection), false, true)));
+       edit_items.push_back (MenuElem (_("Export Range"), sigc::mem_fun(*this, &Editor::export_range)));
 }
 
 
@@ -1951,11 +1958,11 @@ Editor::add_dstream_context_items (Menu_Helpers::MenuList& edit_items)
        MenuList& play_items = play_menu->items();
        play_menu->set_name ("ArdourContextMenu");
 
-       play_items.push_back (MenuElem (_("Play from edit point"), mem_fun(*this, &Editor::play_from_edit_point)));
-       play_items.push_back (MenuElem (_("Play from start"), mem_fun(*this, &Editor::play_from_start)));
-       play_items.push_back (MenuElem (_("Play region"), mem_fun(*this, &Editor::play_selected_region)));
+       play_items.push_back (MenuElem (_("Play From Edit Point"), sigc::mem_fun(*this, &Editor::play_from_edit_point)));
+       play_items.push_back (MenuElem (_("Play From Start"), sigc::mem_fun(*this, &Editor::play_from_start)));
+       play_items.push_back (MenuElem (_("Play Region"), sigc::mem_fun(*this, &Editor::play_selected_region)));
        play_items.push_back (SeparatorElem());
-       play_items.push_back (MenuElem (_("Loop Region"), mem_fun(*this, &Editor::loop_selected_region)));
+       play_items.push_back (MenuElem (_("Loop Region"), sigc::mem_fun(*this, &Editor::loop_selected_region)));
 
        edit_items.push_back (MenuElem (_("Play"), *play_menu));
 
@@ -1965,21 +1972,21 @@ Editor::add_dstream_context_items (Menu_Helpers::MenuList& edit_items)
        MenuList& select_items = select_menu->items();
        select_menu->set_name ("ArdourContextMenu");
 
-       select_items.push_back (MenuElem (_("Select All in track"), bind (mem_fun(*this, &Editor::select_all_in_track), Selection::Set)));
-       select_items.push_back (MenuElem (_("Select All"), bind (mem_fun(*this, &Editor::select_all), Selection::Set)));
-       select_items.push_back (MenuElem (_("Invert selection in track"), mem_fun(*this, &Editor::invert_selection_in_track)));
-       select_items.push_back (MenuElem (_("Invert selection"), mem_fun(*this, &Editor::invert_selection)));
+       select_items.push_back (MenuElem (_("Select All in Track"), sigc::bind (sigc::mem_fun(*this, &Editor::select_all_in_track), Selection::Set)));
+       select_items.push_back (MenuElem (_("Select All"), sigc::bind (sigc::mem_fun(*this, &Editor::select_all), Selection::Set)));
+       select_items.push_back (MenuElem (_("Invert Selection in Track"), sigc::mem_fun(*this, &Editor::invert_selection_in_track)));
+       select_items.push_back (MenuElem (_("Invert Selection"), sigc::mem_fun(*this, &Editor::invert_selection)));
        select_items.push_back (SeparatorElem());
-       select_items.push_back (MenuElem (_("Set range to loop range"), mem_fun(*this, &Editor::set_selection_from_loop)));
-       select_items.push_back (MenuElem (_("Set range to punch range"), mem_fun(*this, &Editor::set_selection_from_punch)));
+       select_items.push_back (MenuElem (_("Set Range to Loop Range"), sigc::mem_fun(*this, &Editor::set_selection_from_loop)));
+       select_items.push_back (MenuElem (_("Set Range to Punch Range"), sigc::mem_fun(*this, &Editor::set_selection_from_punch)));
        select_items.push_back (SeparatorElem());
-       select_items.push_back (MenuElem (_("Select All After Edit Point"), bind (mem_fun(*this, &Editor::select_all_selectables_using_edit), true)));
-       select_items.push_back (MenuElem (_("Select All Before Edit Point"), bind (mem_fun(*this, &Editor::select_all_selectables_using_edit), false)));
-       select_items.push_back (MenuElem (_("Select All After Playhead"), bind (mem_fun(*this, &Editor::select_all_selectables_using_cursor), playhead_cursor, true)));
-       select_items.push_back (MenuElem (_("Select All Before Playhead"), bind (mem_fun(*this, &Editor::select_all_selectables_using_cursor), playhead_cursor, false)));
-       select_items.push_back (MenuElem (_("Select All Between Playhead & Edit Point"), bind (mem_fun(*this, &Editor::select_all_selectables_between), false)));
-       select_items.push_back (MenuElem (_("Select All Within Playhead & Edit Point"), bind (mem_fun(*this, &Editor::select_all_selectables_between), true)));
-       select_items.push_back (MenuElem (_("Select Range Between Playhead & Edit Point"), mem_fun(*this, &Editor::select_range_between)));
+       select_items.push_back (MenuElem (_("Select All After Edit Point"), sigc::bind (sigc::mem_fun(*this, &Editor::select_all_selectables_using_edit), true)));
+       select_items.push_back (MenuElem (_("Select All Before Edit Point"), sigc::bind (sigc::mem_fun(*this, &Editor::select_all_selectables_using_edit), false)));
+       select_items.push_back (MenuElem (_("Select All After Playhead"), sigc::bind (sigc::mem_fun(*this, &Editor::select_all_selectables_using_cursor), playhead_cursor, true)));
+       select_items.push_back (MenuElem (_("Select All Before Playhead"), sigc::bind (sigc::mem_fun(*this, &Editor::select_all_selectables_using_cursor), playhead_cursor, false)));
+       select_items.push_back (MenuElem (_("Select All Between Playhead and Edit Point"), sigc::bind (sigc::mem_fun(*this, &Editor::select_all_selectables_between), false)));
+       select_items.push_back (MenuElem (_("Select All Within Playhead and Edit Point"), sigc::bind (sigc::mem_fun(*this, &Editor::select_all_selectables_between), true)));
+       select_items.push_back (MenuElem (_("Select Range Between Playhead and Edit Point"), sigc::mem_fun(*this, &Editor::select_range_between)));
 
        edit_items.push_back (MenuElem (_("Select"), *select_menu));
 
@@ -1989,24 +1996,22 @@ Editor::add_dstream_context_items (Menu_Helpers::MenuList& edit_items)
        MenuList& cutnpaste_items = cutnpaste_menu->items();
        cutnpaste_menu->set_name ("ArdourContextMenu");
 
-       cutnpaste_items.push_back (MenuElem (_("Cut"), mem_fun(*this, &Editor::cut)));
-       cutnpaste_items.push_back (MenuElem (_("Copy"), mem_fun(*this, &Editor::copy)));
-       cutnpaste_items.push_back (MenuElem (_("Paste"), bind (mem_fun(*this, &Editor::paste), 1.0f)));
+       cutnpaste_items.push_back (MenuElem (_("Cut"), sigc::mem_fun(*this, &Editor::cut)));
+       cutnpaste_items.push_back (MenuElem (_("Copy"), sigc::mem_fun(*this, &Editor::copy)));
+       cutnpaste_items.push_back (MenuElem (_("Paste"), sigc::bind (sigc::mem_fun(*this, &Editor::paste), 1.0f)));
 
        cutnpaste_items.push_back (SeparatorElem());
 
-       cutnpaste_items.push_back (MenuElem (_("Align"), bind (mem_fun(*this, &Editor::align), ARDOUR::SyncPoint)));
-       cutnpaste_items.push_back (MenuElem (_("Align Relative"), bind (mem_fun(*this, &Editor::align_relative), ARDOUR::SyncPoint)));
-
-       cutnpaste_items.push_back (SeparatorElem());
+       cutnpaste_items.push_back (MenuElem (_("Align"), sigc::bind (sigc::mem_fun(*this, &Editor::align), ARDOUR::SyncPoint)));
+       cutnpaste_items.push_back (MenuElem (_("Align Relative"), sigc::bind (sigc::mem_fun(*this, &Editor::align_relative), ARDOUR::SyncPoint)));
 
        edit_items.push_back (MenuElem (_("Edit"), *cutnpaste_menu));
 
        /* Adding new material */
 
        edit_items.push_back (SeparatorElem());
-       edit_items.push_back (MenuElem (_("Insert Selected Region"), bind (mem_fun(*this, &Editor::insert_region_list_selection), 1.0f)));
-       edit_items.push_back (MenuElem (_("Insert Existing Media"), bind (mem_fun(*this, &Editor::add_external_audio_action), ImportToTrack)));
+       edit_items.push_back (MenuElem (_("Insert Selected Region"), sigc::bind (sigc::mem_fun(*this, &Editor::insert_region_list_selection), 1.0f)));
+       edit_items.push_back (MenuElem (_("Insert Existing Media"), sigc::bind (sigc::mem_fun(*this, &Editor::add_external_audio_action), ImportToTrack)));
 
        /* Nudge track */
 
@@ -2015,10 +2020,10 @@ Editor::add_dstream_context_items (Menu_Helpers::MenuList& edit_items)
        nudge_menu->set_name ("ArdourContextMenu");
 
        edit_items.push_back (SeparatorElem());
-       nudge_items.push_back (MenuElem (_("Nudge entire track fwd"), (bind (mem_fun(*this, &Editor::nudge_track), false, true))));
-       nudge_items.push_back (MenuElem (_("Nudge track after edit point fwd"), (bind (mem_fun(*this, &Editor::nudge_track), true, true))));
-       nudge_items.push_back (MenuElem (_("Nudge entire track bwd"), (bind (mem_fun(*this, &Editor::nudge_track), false, false))));
-       nudge_items.push_back (MenuElem (_("Nudge track after edit point bwd"), (bind (mem_fun(*this, &Editor::nudge_track), true, false))));
+       nudge_items.push_back (MenuElem (_("Nudge Entire Track Forward"), (sigc::bind (sigc::mem_fun(*this, &Editor::nudge_track), false, true))));
+       nudge_items.push_back (MenuElem (_("Nudge Track After Edit Point Forward"), (sigc::bind (sigc::mem_fun(*this, &Editor::nudge_track), true, true))));
+       nudge_items.push_back (MenuElem (_("Nudge Entire Track Backward"), (sigc::bind (sigc::mem_fun(*this, &Editor::nudge_track), false, false))));
+       nudge_items.push_back (MenuElem (_("Nudge Track After Edit Point Backward"), (sigc::bind (sigc::mem_fun(*this, &Editor::nudge_track), true, false))));
 
        edit_items.push_back (MenuElem (_("Nudge"), *nudge_menu));
 }
@@ -2034,8 +2039,8 @@ Editor::add_bus_context_items (Menu_Helpers::MenuList& edit_items)
        MenuList& play_items = play_menu->items();
        play_menu->set_name ("ArdourContextMenu");
 
-       play_items.push_back (MenuElem (_("Play from edit point"), mem_fun(*this, &Editor::play_from_edit_point)));
-       play_items.push_back (MenuElem (_("Play from start"), mem_fun(*this, &Editor::play_from_start)));
+       play_items.push_back (MenuElem (_("Play From Edit Point"), sigc::mem_fun(*this, &Editor::play_from_edit_point)));
+       play_items.push_back (MenuElem (_("Play From Start"), sigc::mem_fun(*this, &Editor::play_from_start)));
        edit_items.push_back (MenuElem (_("Play"), *play_menu));
 
        /* Selection */
@@ -2044,15 +2049,15 @@ Editor::add_bus_context_items (Menu_Helpers::MenuList& edit_items)
        MenuList& select_items = select_menu->items();
        select_menu->set_name ("ArdourContextMenu");
 
-       select_items.push_back (MenuElem (_("Select All in track"), bind (mem_fun(*this, &Editor::select_all_in_track), Selection::Set)));
-       select_items.push_back (MenuElem (_("Select All"), bind (mem_fun(*this, &Editor::select_all), Selection::Set)));
-       select_items.push_back (MenuElem (_("Invert selection in track"), mem_fun(*this, &Editor::invert_selection_in_track)));
-       select_items.push_back (MenuElem (_("Invert selection"), mem_fun(*this, &Editor::invert_selection)));
+       select_items.push_back (MenuElem (_("Select All in Track"), sigc::bind (sigc::mem_fun(*this, &Editor::select_all_in_track), Selection::Set)));
+       select_items.push_back (MenuElem (_("Select All"), sigc::bind (sigc::mem_fun(*this, &Editor::select_all), Selection::Set)));
+       select_items.push_back (MenuElem (_("Invert Selection in Track"), sigc::mem_fun(*this, &Editor::invert_selection_in_track)));
+       select_items.push_back (MenuElem (_("Invert Selection"), sigc::mem_fun(*this, &Editor::invert_selection)));
        select_items.push_back (SeparatorElem());
-       select_items.push_back (MenuElem (_("Select all after edit point"), bind (mem_fun(*this, &Editor::select_all_selectables_using_edit), true)));
-       select_items.push_back (MenuElem (_("Select all before edit point"), bind (mem_fun(*this, &Editor::select_all_selectables_using_edit), false)));
-       select_items.push_back (MenuElem (_("Select all after playhead"), bind (mem_fun(*this, &Editor::select_all_selectables_using_cursor), playhead_cursor, true)));
-       select_items.push_back (MenuElem (_("Select all before playhead"), bind (mem_fun(*this, &Editor::select_all_selectables_using_cursor), playhead_cursor, false)));
+       select_items.push_back (MenuElem (_("Select All After Edit Point"), sigc::bind (sigc::mem_fun(*this, &Editor::select_all_selectables_using_edit), true)));
+       select_items.push_back (MenuElem (_("Select All Before Edit Point"), sigc::bind (sigc::mem_fun(*this, &Editor::select_all_selectables_using_edit), false)));
+       select_items.push_back (MenuElem (_("Select All After Playhead"), sigc::bind (sigc::mem_fun(*this, &Editor::select_all_selectables_using_cursor), playhead_cursor, true)));
+       select_items.push_back (MenuElem (_("Select All Before Playhead"), sigc::bind (sigc::mem_fun(*this, &Editor::select_all_selectables_using_cursor), playhead_cursor, false)));
 
        edit_items.push_back (MenuElem (_("Select"), *select_menu));
 
@@ -2062,19 +2067,19 @@ Editor::add_bus_context_items (Menu_Helpers::MenuList& edit_items)
        MenuList& cutnpaste_items = cutnpaste_menu->items();
        cutnpaste_menu->set_name ("ArdourContextMenu");
 
-       cutnpaste_items.push_back (MenuElem (_("Cut"), mem_fun(*this, &Editor::cut)));
-       cutnpaste_items.push_back (MenuElem (_("Copy"), mem_fun(*this, &Editor::copy)));
-       cutnpaste_items.push_back (MenuElem (_("Paste"), bind (mem_fun(*this, &Editor::paste), 1.0f)));
+       cutnpaste_items.push_back (MenuElem (_("Cut"), sigc::mem_fun(*this, &Editor::cut)));
+       cutnpaste_items.push_back (MenuElem (_("Copy"), sigc::mem_fun(*this, &Editor::copy)));
+       cutnpaste_items.push_back (MenuElem (_("Paste"), sigc::bind (sigc::mem_fun(*this, &Editor::paste), 1.0f)));
 
        Menu *nudge_menu = manage (new Menu());
        MenuList& nudge_items = nudge_menu->items();
        nudge_menu->set_name ("ArdourContextMenu");
 
        edit_items.push_back (SeparatorElem());
-       nudge_items.push_back (MenuElem (_("Nudge entire track fwd"), (bind (mem_fun(*this, &Editor::nudge_track), false, true))));
-       nudge_items.push_back (MenuElem (_("Nudge track after edit point fwd"), (bind (mem_fun(*this, &Editor::nudge_track), true, true))));
-       nudge_items.push_back (MenuElem (_("Nudge entire track bwd"), (bind (mem_fun(*this, &Editor::nudge_track), false, false))));
-       nudge_items.push_back (MenuElem (_("Nudge track after edit point bwd"), (bind (mem_fun(*this, &Editor::nudge_track), true, false))));
+       nudge_items.push_back (MenuElem (_("Nudge Entire Track Forward"), (sigc::bind (sigc::mem_fun(*this, &Editor::nudge_track), false, true))));
+       nudge_items.push_back (MenuElem (_("Nudge Track After Edit Point Forward"), (sigc::bind (sigc::mem_fun(*this, &Editor::nudge_track), true, true))));
+       nudge_items.push_back (MenuElem (_("Nudge Entire Track Backward"), (sigc::bind (sigc::mem_fun(*this, &Editor::nudge_track), false, false))));
+       nudge_items.push_back (MenuElem (_("Nudge Track After Edit Point Backward"), (sigc::bind (sigc::mem_fun(*this, &Editor::nudge_track), true, false))));
 
        edit_items.push_back (MenuElem (_("Nudge"), *nudge_menu));
 }
@@ -2262,8 +2267,9 @@ Editor::set_state (const XMLNode& node, int /*version*/)
        set_default_size (g.base_width, g.base_height);
        move (x, y);
 
-       if (session && (prop = node.property ("playhead"))) {
-               nframes64_t pos = atol (prop->value().c_str());
+       if (_session && (prop = node.property ("playhead"))) {
+               nframes64_t pos;
+                sscanf (prop->value().c_str(), "%" PRIi64, &pos);
                playhead_cursor->set_position (pos);
        } else {
                playhead_cursor->set_position (0);
@@ -2291,10 +2297,8 @@ Editor::set_state (const XMLNode& node, int /*version*/)
 
        if ((prop = node.property ("mouse-mode"))) {
                MouseMode m = str2mousemode(prop->value());
-               mouse_mode = MouseMode ((int) m + 1); /* lie, force mode switch */
                set_mouse_mode (m, true);
        } else {
-               mouse_mode = MouseGain; /* lie, to force the mode switch */
                set_mouse_mode (MouseObject, true);
        }
 
@@ -2302,11 +2306,13 @@ Editor::set_state (const XMLNode& node, int /*version*/)
                nframes64_t pos;
                if (sscanf (prop->value().c_str(), "%" PRId64, &pos) == 1) {
                        reset_x_origin (pos);
-                       /* this hack prevents the initial call to update_current_screen() from doing re-centering on the playhead */
-                       last_update_frame = pos;
                }
        }
 
+       if ((prop = node.property ("y-origin")) != 0) {
+               reset_y_origin (atof (prop->value ()));
+       }
+
        if ((prop = node.property ("internal-edit"))) {
                bool yn = string_is_affirmative (prop->value());
                RefPtr<Action> act = ActionManager::get_action (X_("MouseMode"), X_("toggle-internal-edit"));
@@ -2317,20 +2323,12 @@ Editor::set_state (const XMLNode& node, int /*version*/)
                }
        }
 
-       if ((prop = node.property ("edit-point"))) {
-               set_edit_point_preference ((EditPoint) string_2_enum (prop->value(), _edit_point), true);
+       if ((prop = node.property ("join-object-range"))) {
+               join_object_range_button.set_active (string_is_affirmative (prop->value ()));
        }
 
-       if ((prop = node.property ("show-waveforms-recording"))) {
-               bool yn = string_is_affirmative (prop->value());
-               _show_waveforms_recording = !yn;
-               RefPtr<Action> act = ActionManager::get_action (X_("Editor"), X_("ToggleWaveformsWhileRecording"));
-               if (act) {
-                       RefPtr<ToggleAction> tact = RefPtr<ToggleAction>::cast_dynamic(act);
-                       /* do it twice to force the change */
-                       tact->set_active (!yn);
-                       tact->set_active (yn);
-               }
+       if ((prop = node.property ("edit-point"))) {
+               set_edit_point_preference ((EditPoint) string_2_enum (prop->value(), _edit_point), true);
        }
 
        if ((prop = node.property ("show-measures"))) {
@@ -2357,8 +2355,21 @@ Editor::set_state (const XMLNode& node, int /*version*/)
                }
        }
 
+        if ((prop = node.property ("stationary-playhead"))) {
+                bool yn = (prop->value() == "yes");
+                set_stationary_playhead (yn);
+                RefPtr<Action> act = ActionManager::get_action (X_("Editor"), X_("toggle-stationary-playhead"));
+                if (act) {
+                        RefPtr<ToggleAction> tact = RefPtr<ToggleAction>::cast_dynamic(act);
+                        if (tact->get_active() != yn) {
+                                tact->set_active (yn);
+                        }
+                }
+        }
+        
        if ((prop = node.property ("region-list-sort-type"))) {
-               _regions->reset_sort_type (str2regionlistsorttype(prop->value()), true);
+               RegionListSortType st;
+               _regions->reset_sort_type ((RegionListSortType) string_2_enum (prop->value(), st), true);
        }
 
        if ((prop = node.property ("xfades-visible"))) {
@@ -2398,6 +2409,13 @@ Editor::set_state (const XMLNode& node, int /*version*/)
                }
        }
 
+       if ((prop = node.property (X_("editor-list-page")))) {
+               the_notebook.set_current_page (atoi (prop->value ()));
+       }
+
+       if ((prop = node.property (X_("editor-pane-position")))) {
+               edit_pane.set_position (atoi (prop->value ()));
+       }
 
        return 0;
 }
@@ -2456,14 +2474,17 @@ Editor::get_state ()
        node->add_property ("playhead", buf);
        snprintf (buf, sizeof (buf), "%" PRIi64, leftmost_frame);
        node->add_property ("left-frame", buf);
+       snprintf (buf, sizeof (buf), "%f", vertical_adjustment.get_value ());
+       node->add_property ("y-origin", buf);
 
-       node->add_property ("show-waveforms-recording", _show_waveforms_recording ? "yes" : "no");
        node->add_property ("show-measures", _show_measures ? "yes" : "no");
        node->add_property ("follow-playhead", _follow_playhead ? "yes" : "no");
+        node->add_property ("stationary-playhead", _stationary_playhead ? "yes" : "no");
        node->add_property ("xfades-visible", _xfade_visibility ? "yes" : "no");
-       node->add_property ("region-list-sort-type", enum2str (_regions->sort_type ()));
+       node->add_property ("region-list-sort-type", enum_2_string (_regions->sort_type ()));
        node->add_property ("mouse-mode", enum2str(mouse_mode));
        node->add_property ("internal-edit", _internal_editing ? "yes" : "no");
+       node->add_property ("join-object-range", join_object_range_button.get_active () ? "yes" : "no");
 
        Glib::RefPtr<Action> act = ActionManager::get_action (X_("Editor"), X_("show-editor-mixer"));
        if (act) {
@@ -2477,6 +2498,12 @@ Editor::get_state ()
                node->add_property (X_("show-editor-list"), tact->get_active() ? "yes" : "no");
        }
 
+       snprintf (buf, sizeof (buf), "%d", the_notebook.get_current_page ());
+       node->add_property (X_("editor-list-page"), buf);
+
+       snprintf (buf, sizeof (buf), "%d", edit_pane.get_position ());
+       node->add_property (X_("editor-pane-position"), buf);
+
        return *node;
 }
 
@@ -2504,12 +2531,12 @@ Editor::trackview_by_y_position (double y)
 /** Snap a position to the grid, if appropriate, taking into account current
  *  grid settings and also the state of any snap modifier keys that may be pressed.
  *  @param start Position to snap.
- *  @param event Event to get current key modifier information from.
+ *  @param event Event to get current key modifier information from, or 0.
  */
 void
 Editor::snap_to_with_modifier (nframes64_t& start, GdkEvent const * event, int32_t direction, bool for_mark)
 {
-       if (!session) {
+       if (!_session || !event) {
                return;
        }
 
@@ -2527,7 +2554,7 @@ Editor::snap_to_with_modifier (nframes64_t& start, GdkEvent const * event, int32
 void
 Editor::snap_to (nframes64_t& start, int32_t direction, bool for_mark)
 {
-       if (!session || _snap_mode == SnapOff) {
+       if (!_session || _snap_mode == SnapOff) {
                return;
        }
 
@@ -2537,24 +2564,24 @@ Editor::snap_to (nframes64_t& start, int32_t direction, bool for_mark)
 void
 Editor::timecode_snap_to_internal (nframes64_t& start, int32_t direction, bool /*for_mark*/)
 {
-       const nframes64_t one_timecode_second = (nframes64_t)(rint(session->timecode_frames_per_second()) * session->frames_per_timecode_frame());
-       nframes64_t one_timecode_minute = (nframes64_t)(rint(session->timecode_frames_per_second()) * session->frames_per_timecode_frame() * 60);
+       const nframes64_t one_timecode_second = (nframes64_t)(rint(_session->timecode_frames_per_second()) * _session->frames_per_timecode_frame());
+       nframes64_t one_timecode_minute = (nframes64_t)(rint(_session->timecode_frames_per_second()) * _session->frames_per_timecode_frame() * 60);
 
        switch (_snap_type) {
        case SnapToTimecodeFrame:
-               if (((direction == 0) && (fmod((double)start, (double)session->frames_per_timecode_frame()) > (session->frames_per_timecode_frame() / 2))) || (direction > 0)) {
-                       start = (nframes64_t) (ceil ((double) start / session->frames_per_timecode_frame()) * session->frames_per_timecode_frame());
+               if (((direction == 0) && (fmod((double)start, (double)_session->frames_per_timecode_frame()) > (_session->frames_per_timecode_frame() / 2))) || (direction > 0)) {
+                       start = (nframes64_t) (ceil ((double) start / _session->frames_per_timecode_frame()) * _session->frames_per_timecode_frame());
                } else {
-                       start = (nframes64_t) (floor ((double) start / session->frames_per_timecode_frame()) *  session->frames_per_timecode_frame());
+                       start = (nframes64_t) (floor ((double) start / _session->frames_per_timecode_frame()) *  _session->frames_per_timecode_frame());
                }
                break;
 
        case SnapToTimecodeSeconds:
-               if (session->timecode_offset_negative())
+               if (_session->timecode_offset_negative())
                {
-                       start += session->timecode_offset ();
+                       start += _session->timecode_offset ();
                } else {
-                       start -= session->timecode_offset ();
+                       start -= _session->timecode_offset ();
                }
                if (((direction == 0) && (start % one_timecode_second > one_timecode_second / 2)) || direction > 0) {
                        start = (nframes64_t) ceil ((double) start / one_timecode_second) * one_timecode_second;
@@ -2562,31 +2589,31 @@ Editor::timecode_snap_to_internal (nframes64_t& start, int32_t direction, bool /
                        start = (nframes64_t) floor ((double) start / one_timecode_second) * one_timecode_second;
                }
 
-               if (session->timecode_offset_negative())
+               if (_session->timecode_offset_negative())
                {
-                       start -= session->timecode_offset ();
+                       start -= _session->timecode_offset ();
                } else {
-                       start += session->timecode_offset ();
+                       start += _session->timecode_offset ();
                }
                break;
 
        case SnapToTimecodeMinutes:
-               if (session->timecode_offset_negative())
+               if (_session->timecode_offset_negative())
                {
-                       start += session->timecode_offset ();
+                       start += _session->timecode_offset ();
                } else {
-                       start -= session->timecode_offset ();
+                       start -= _session->timecode_offset ();
                }
                if (((direction == 0) && (start % one_timecode_minute > one_timecode_minute / 2)) || direction > 0) {
                        start = (nframes64_t) ceil ((double) start / one_timecode_minute) * one_timecode_minute;
                } else {
                        start = (nframes64_t) floor ((double) start / one_timecode_minute) * one_timecode_minute;
                }
-               if (session->timecode_offset_negative())
+               if (_session->timecode_offset_negative())
                {
-                       start -= session->timecode_offset ();
+                       start -= _session->timecode_offset ();
                } else {
-                       start += session->timecode_offset ();
+                       start += _session->timecode_offset ();
                }
                break;
        default:
@@ -2598,8 +2625,8 @@ Editor::timecode_snap_to_internal (nframes64_t& start, int32_t direction, bool /
 void
 Editor::snap_to_internal (nframes64_t& start, int32_t direction, bool for_mark)
 {
-       const nframes64_t one_second = session->frame_rate();
-       const nframes64_t one_minute = session->frame_rate() * 60;
+       const nframes64_t one_second = _session->frame_rate();
+       const nframes64_t one_minute = _session->frame_rate() * 60;
        nframes64_t presnap = start;
        nframes64_t before;
        nframes64_t after;
@@ -2635,31 +2662,31 @@ Editor::snap_to_internal (nframes64_t& start, int32_t direction, bool for_mark)
                break;
 
        case SnapToBar:
-               start = session->tempo_map().round_to_bar (start, direction);
+               start = _session->tempo_map().round_to_bar (start, direction);
                break;
 
        case SnapToBeat:
-               start = session->tempo_map().round_to_beat (start, direction);
+               start = _session->tempo_map().round_to_beat (start, direction);
                break;
 
        case SnapToAThirtysecondBeat:
-               start = session->tempo_map().round_to_beat_subdivision (start, 32, direction);
+               start = _session->tempo_map().round_to_beat_subdivision (start, 32, direction);
                break;
 
        case SnapToASixteenthBeat:
-               start = session->tempo_map().round_to_beat_subdivision (start, 16, direction);
+               start = _session->tempo_map().round_to_beat_subdivision (start, 16, direction);
                break;
 
        case SnapToAEighthBeat:
-               start = session->tempo_map().round_to_beat_subdivision (start, 8, direction);
+               start = _session->tempo_map().round_to_beat_subdivision (start, 8, direction);
                break;
 
        case SnapToAQuarterBeat:
-               start = session->tempo_map().round_to_beat_subdivision (start, 4, direction);
+               start = _session->tempo_map().round_to_beat_subdivision (start, 4, direction);
                break;
 
        case SnapToAThirdBeat:
-               start = session->tempo_map().round_to_beat_subdivision (start, 3, direction);
+               start = _session->tempo_map().round_to_beat_subdivision (start, 3, direction);
                break;
 
        case SnapToMark:
@@ -2667,7 +2694,7 @@ Editor::snap_to_internal (nframes64_t& start, int32_t direction, bool for_mark)
                        return;
                }
 
-               session->locations()->marks_either_side (start, before, after);
+               _session->locations()->marks_either_side (start, before, after);
 
                if (before == max_frames) {
                        start = after;
@@ -2755,23 +2782,33 @@ Editor::setup_toolbar ()
        mouse_timefx_button.set_relief(Gtk::RELIEF_NONE);
        mouse_audition_button.set_relief(Gtk::RELIEF_NONE);
        // internal_edit_button.set_relief(Gtk::RELIEF_NONE);
+       join_object_range_button.set_relief(Gtk::RELIEF_NONE);
 
        HBox* mode_box = manage(new HBox);
        mode_box->set_border_width (2);
        mode_box->set_spacing(4);
-       mouse_mode_button_box.set_spacing(1);
-       mouse_mode_button_box.pack_start(mouse_move_button, true, true);
-       if (!Profile->get_sae()) {
-               mouse_mode_button_box.pack_start(mouse_select_button, true, true);
+
+       /* table containing mode buttons */
+
+       HBox* mouse_mode_button_box = manage (new HBox ());
+
+       if (Profile->get_sae()) {
+               mouse_mode_button_box->pack_start (mouse_move_button);
+       } else {
+               mouse_mode_button_box->pack_start (mouse_move_button);
+               mouse_mode_button_box->pack_start (join_object_range_button);
+               mouse_mode_button_box->pack_start (mouse_select_button);
        }
-       mouse_mode_button_box.pack_start(mouse_zoom_button, true, true);
+
+       mouse_mode_button_box->pack_start (mouse_zoom_button);
+
        if (!Profile->get_sae()) {
-               mouse_mode_button_box.pack_start(mouse_gain_button, true, true);
+               mouse_mode_button_box->pack_start (mouse_gain_button);
        }
-       mouse_mode_button_box.pack_start(mouse_timefx_button, true, true);
-       mouse_mode_button_box.pack_start(mouse_audition_button, true, true);
-       mouse_mode_button_box.pack_start(internal_edit_button, true, true);
-       mouse_mode_button_box.set_homogeneous(true);
+
+       mouse_mode_button_box->pack_start (mouse_timefx_button);
+       mouse_mode_button_box->pack_start (mouse_audition_button);
+       mouse_mode_button_box->pack_start (internal_edit_button);
 
        vector<string> edit_mode_strings;
        edit_mode_strings.push_back (edit_mode_to_string (Slide));
@@ -2782,27 +2819,27 @@ Editor::setup_toolbar ()
 
        edit_mode_selector.set_name ("EditModeSelector");
        set_popdown_strings (edit_mode_selector, edit_mode_strings, true);
-       edit_mode_selector.signal_changed().connect (mem_fun(*this, &Editor::edit_mode_selection_done));
+       edit_mode_selector.signal_changed().connect (sigc::mem_fun(*this, &Editor::edit_mode_selection_done));
 
-       mode_box->pack_start(edit_mode_selector);
-       mode_box->pack_start(mouse_mode_button_box);
+       mode_box->pack_start (edit_mode_selector);
+       mode_box->pack_start (*mouse_mode_button_box);
 
-       mouse_mode_tearoff = manage (new TearOff (*mode_box));
-       mouse_mode_tearoff->set_name ("MouseModeBase");
-       mouse_mode_tearoff->tearoff_window().signal_key_press_event().connect (bind (sigc::ptr_fun (relay_key_press), &mouse_mode_tearoff->tearoff_window()), false);
+       _mouse_mode_tearoff = manage (new TearOff (*mode_box));
+       _mouse_mode_tearoff->set_name ("MouseModeBase");
+       _mouse_mode_tearoff->tearoff_window().signal_key_press_event().connect (sigc::bind (sigc::ptr_fun (relay_key_press), &_mouse_mode_tearoff->tearoff_window()), false);
 
        if (Profile->get_sae()) {
-               mouse_mode_tearoff->set_can_be_torn_off (false);
+               _mouse_mode_tearoff->set_can_be_torn_off (false);
        }
 
-       mouse_mode_tearoff->Detach.connect (bind (mem_fun(*this, &Editor::detach_tearoff), static_cast<Box*>(&toolbar_hbox),
-                                                 &mouse_mode_tearoff->tearoff_window()));
-       mouse_mode_tearoff->Attach.connect (bind (mem_fun(*this, &Editor::reattach_tearoff), static_cast<Box*> (&toolbar_hbox),
-                                                 &mouse_mode_tearoff->tearoff_window(), 1));
-       mouse_mode_tearoff->Hidden.connect (bind (mem_fun(*this, &Editor::detach_tearoff), static_cast<Box*>(&toolbar_hbox),
-                                                 &mouse_mode_tearoff->tearoff_window()));
-       mouse_mode_tearoff->Visible.connect (bind (mem_fun(*this, &Editor::reattach_tearoff), static_cast<Box*> (&toolbar_hbox),
-                                                  &mouse_mode_tearoff->tearoff_window(), 1));
+       _mouse_mode_tearoff->Detach.connect (sigc::bind (sigc::mem_fun(*this, &Editor::detach_tearoff), static_cast<Box*>(&toolbar_hbox),
+                                                         &_mouse_mode_tearoff->tearoff_window()));
+       _mouse_mode_tearoff->Attach.connect (sigc::bind (sigc::mem_fun(*this, &Editor::reattach_tearoff), static_cast<Box*> (&toolbar_hbox),
+                                                         &_mouse_mode_tearoff->tearoff_window(), 1));
+       _mouse_mode_tearoff->Hidden.connect (sigc::bind (sigc::mem_fun(*this, &Editor::detach_tearoff), static_cast<Box*>(&toolbar_hbox),
+                                                         &_mouse_mode_tearoff->tearoff_window()));
+       _mouse_mode_tearoff->Visible.connect (sigc::bind (sigc::mem_fun(*this, &Editor::reattach_tearoff), static_cast<Box*> (&toolbar_hbox),
+                                                          &_mouse_mode_tearoff->tearoff_window(), 1));
 
        mouse_move_button.set_mode (false);
        mouse_select_button.set_mode (false);
@@ -2810,6 +2847,7 @@ Editor::setup_toolbar ()
        mouse_zoom_button.set_mode (false);
        mouse_timefx_button.set_mode (false);
        mouse_audition_button.set_mode (false);
+       join_object_range_button.set_mode (false);
 
        mouse_move_button.set_name ("MouseModeButton");
        mouse_select_button.set_name ("MouseModeButton");
@@ -2817,8 +2855,8 @@ Editor::setup_toolbar ()
        mouse_zoom_button.set_name ("MouseModeButton");
        mouse_timefx_button.set_name ("MouseModeButton");
        mouse_audition_button.set_name ("MouseModeButton");
-
        internal_edit_button.set_name ("MouseModeButton");
+       join_object_range_button.set_name ("MouseModeButton");
 
        mouse_move_button.unset_flags (CAN_FOCUS);
        mouse_select_button.unset_flags (CAN_FOCUS);
@@ -2827,6 +2865,7 @@ Editor::setup_toolbar ()
        mouse_timefx_button.unset_flags (CAN_FOCUS);
        mouse_audition_button.unset_flags (CAN_FOCUS);
        internal_edit_button.unset_flags (CAN_FOCUS);
+       join_object_range_button.unset_flags (CAN_FOCUS);
 
        /* Zoom */
 
@@ -2834,24 +2873,20 @@ Editor::setup_toolbar ()
        zoom_box.set_border_width (0);
 
        zoom_in_button.set_name ("EditorTimeButton");
-       zoom_in_button.set_image (*(manage (new Image (Stock::ZOOM_IN, Gtk::ICON_SIZE_BUTTON))));
-       zoom_in_button.signal_clicked().connect (bind (mem_fun(*this, &Editor::temporal_zoom_step), false));
-       ARDOUR_UI::instance()->tooltips().set_tip (zoom_in_button, _("Zoom In"));
+       zoom_in_button.set_image (*(manage (new Image (Stock::ZOOM_IN, Gtk::ICON_SIZE_MENU))));
+       zoom_in_button.signal_clicked().connect (sigc::bind (sigc::mem_fun(*this, &Editor::temporal_zoom_step), false));
 
        zoom_out_button.set_name ("EditorTimeButton");
-       zoom_out_button.set_image (*(manage (new Image (Stock::ZOOM_OUT, Gtk::ICON_SIZE_BUTTON))));
-       zoom_out_button.signal_clicked().connect (bind (mem_fun(*this, &Editor::temporal_zoom_step), true));
-       ARDOUR_UI::instance()->tooltips().set_tip (zoom_out_button, _("Zoom Out"));
+       zoom_out_button.set_image (*(manage (new Image (Stock::ZOOM_OUT, Gtk::ICON_SIZE_MENU))));
+       zoom_out_button.signal_clicked().connect (sigc::bind (sigc::mem_fun(*this, &Editor::temporal_zoom_step), true));
 
        zoom_out_full_button.set_name ("EditorTimeButton");
-       zoom_out_full_button.set_image (*(manage (new Image (Stock::ZOOM_100, Gtk::ICON_SIZE_BUTTON))));
-       zoom_out_full_button.signal_clicked().connect (mem_fun(*this, &Editor::temporal_zoom_session));
-       ARDOUR_UI::instance()->tooltips().set_tip (zoom_out_full_button, _("Zoom to Session"));
+       zoom_out_full_button.set_image (*(manage (new Image (Stock::ZOOM_100, Gtk::ICON_SIZE_MENU))));
+       zoom_out_full_button.signal_clicked().connect (sigc::mem_fun(*this, &Editor::temporal_zoom_session));
 
        zoom_focus_selector.set_name ("ZoomFocusSelector");
        set_popdown_strings (zoom_focus_selector, zoom_focus_strings, true);
-       zoom_focus_selector.signal_changed().connect (mem_fun(*this, &Editor::zoom_focus_selection_done));
-       ARDOUR_UI::instance()->tooltips().set_tip (zoom_focus_selector, _("Zoom focus"));
+       zoom_focus_selector.signal_changed().connect (sigc::mem_fun(*this, &Editor::zoom_focus_selection_done));
 
        zoom_box.pack_start (zoom_out_button, false, false);
        zoom_box.pack_start (zoom_in_button, false, false);
@@ -2861,14 +2896,12 @@ Editor::setup_toolbar ()
        tav_expand_button.set_name ("TrackHeightButton");
        tav_expand_button.set_size_request(-1,20);
        tav_expand_button.add (*(manage (new Image (::get_icon("tav_exp")))));
-       tav_expand_button.signal_clicked().connect (bind (mem_fun(*this, &Editor::tav_zoom_step), true));
-       ARDOUR_UI::instance()->tooltips().set_tip (tav_expand_button, _("Expand Tracks"));
+       tav_expand_button.signal_clicked().connect (sigc::bind (sigc::mem_fun(*this, &Editor::tav_zoom_step), true));
 
        tav_shrink_button.set_name ("TrackHeightButton");
        tav_shrink_button.set_size_request(-1,20);
        tav_shrink_button.add (*(manage (new Image (::get_icon("tav_shrink")))));
-       tav_shrink_button.signal_clicked().connect (bind (mem_fun(*this, &Editor::tav_zoom_step), false));
-       ARDOUR_UI::instance()->tooltips().set_tip (tav_shrink_button, _("Shrink Tracks"));
+       tav_shrink_button.signal_clicked().connect (sigc::bind (sigc::mem_fun(*this, &Editor::tav_zoom_step), false));
 
        track_zoom_box.set_spacing (1);
        track_zoom_box.set_border_width (0);
@@ -2887,18 +2920,15 @@ Editor::setup_toolbar ()
 
        snap_type_selector.set_name ("SnapTypeSelector");
        set_popdown_strings (snap_type_selector, snap_type_strings, true);
-       snap_type_selector.signal_changed().connect (mem_fun(*this, &Editor::snap_type_selection_done));
-       ARDOUR_UI::instance()->tooltips().set_tip (snap_type_selector, _("Snap/Grid Units"));
+       snap_type_selector.signal_changed().connect (sigc::mem_fun(*this, &Editor::snap_type_selection_done));
 
        snap_mode_selector.set_name ("SnapModeSelector");
        set_popdown_strings (snap_mode_selector, snap_mode_strings, true);
-       snap_mode_selector.signal_changed().connect (mem_fun(*this, &Editor::snap_mode_selection_done));
-       ARDOUR_UI::instance()->tooltips().set_tip (snap_mode_selector, _("Snap/Grid Mode"));
+       snap_mode_selector.signal_changed().connect (sigc::mem_fun(*this, &Editor::snap_mode_selection_done));
 
        edit_point_selector.set_name ("EditPointSelector");
        set_popdown_strings (edit_point_selector, edit_point_strings, true);
-       edit_point_selector.signal_changed().connect (mem_fun(*this, &Editor::edit_point_selection_done));
-       ARDOUR_UI::instance()->tooltips().set_tip (edit_point_selector, _("Edit point"));
+       edit_point_selector.signal_changed().connect (sigc::mem_fun(*this, &Editor::edit_point_selection_done));
 
        snap_box.pack_start (snap_mode_selector, false, false);
        snap_box.pack_start (snap_type_selector, false, false);
@@ -2910,8 +2940,8 @@ Editor::setup_toolbar ()
        nudge_box->set_spacing(1);
        nudge_box->set_border_width (2);
 
-       nudge_forward_button.signal_button_release_event().connect (mem_fun(*this, &Editor::nudge_forward_release), false);
-       nudge_backward_button.signal_button_release_event().connect (mem_fun(*this, &Editor::nudge_backward_release), false);
+       nudge_forward_button.signal_button_release_event().connect (sigc::mem_fun(*this, &Editor::nudge_forward_release), false);
+       nudge_backward_button.signal_button_release_event().connect (sigc::mem_fun(*this, &Editor::nudge_backward_release), false);
 
        nudge_box->pack_start (nudge_backward_button, false, false);
        nudge_box->pack_start (nudge_forward_button, false, false);
@@ -2923,28 +2953,28 @@ Editor::setup_toolbar ()
        HBox* hbox = manage (new HBox);
        hbox->set_spacing(10);
 
-       tools_tearoff = manage (new TearOff (*hbox));
-       tools_tearoff->set_name ("MouseModeBase");
-       tools_tearoff->tearoff_window().signal_key_press_event().connect (bind (sigc::ptr_fun (relay_key_press), &tools_tearoff->tearoff_window()), false);
-
+       _tools_tearoff = manage (new TearOff (*hbox));
+       _tools_tearoff->set_name ("MouseModeBase");
+       _tools_tearoff->tearoff_window().signal_key_press_event().connect (sigc::bind (sigc::ptr_fun (relay_key_press), &_tools_tearoff->tearoff_window()), false);
+        
        if (Profile->get_sae()) {
-               tools_tearoff->set_can_be_torn_off (false);
+               _tools_tearoff->set_can_be_torn_off (false);
        }
 
-       tools_tearoff->Detach.connect (bind (mem_fun(*this, &Editor::detach_tearoff), static_cast<Box*>(&toolbar_hbox),
-                                            &tools_tearoff->tearoff_window()));
-       tools_tearoff->Attach.connect (bind (mem_fun(*this, &Editor::reattach_tearoff), static_cast<Box*> (&toolbar_hbox),
-                                            &tools_tearoff->tearoff_window(), 0));
-       tools_tearoff->Hidden.connect (bind (mem_fun(*this, &Editor::detach_tearoff), static_cast<Box*>(&toolbar_hbox),
-                                            &tools_tearoff->tearoff_window()));
-       tools_tearoff->Visible.connect (bind (mem_fun(*this, &Editor::reattach_tearoff), static_cast<Box*> (&toolbar_hbox),
-                                             &tools_tearoff->tearoff_window(), 0));
+       _tools_tearoff->Detach.connect (sigc::bind (sigc::mem_fun(*this, &Editor::detach_tearoff), static_cast<Box*>(&toolbar_hbox),
+                                                    &_tools_tearoff->tearoff_window()));
+       _tools_tearoff->Attach.connect (sigc::bind (sigc::mem_fun(*this, &Editor::reattach_tearoff), static_cast<Box*> (&toolbar_hbox),
+                                                    &_tools_tearoff->tearoff_window(), 0));
+       _tools_tearoff->Hidden.connect (sigc::bind (sigc::mem_fun(*this, &Editor::detach_tearoff), static_cast<Box*>(&toolbar_hbox),
+                                                    &_tools_tearoff->tearoff_window()));
+       _tools_tearoff->Visible.connect (sigc::bind (sigc::mem_fun(*this, &Editor::reattach_tearoff), static_cast<Box*> (&toolbar_hbox),
+                                                     &_tools_tearoff->tearoff_window(), 0));
 
        toolbar_hbox.set_spacing (10);
        toolbar_hbox.set_border_width (1);
 
-       toolbar_hbox.pack_start (*mouse_mode_tearoff, false, false);
-       toolbar_hbox.pack_start (*tools_tearoff, false, false);
+       toolbar_hbox.pack_start (*_mouse_mode_tearoff, false, false);
+       toolbar_hbox.pack_start (*_tools_tearoff, false, false);
 
        hbox->pack_start (snap_box, false, false);
        hbox->pack_start (*nudge_box, false, false);
@@ -2960,13 +2990,40 @@ Editor::setup_toolbar ()
        toolbar_frame.add (toolbar_base);
 }
 
+void
+Editor::setup_tooltips ()
+{
+       ARDOUR_UI::instance()->set_tip (mouse_move_button, _("Select/Move Objects"));
+       ARDOUR_UI::instance()->set_tip (mouse_select_button, _("Select/Move Ranges"));
+       ARDOUR_UI::instance()->set_tip (mouse_gain_button, _("Draw Gain Automation"));
+       ARDOUR_UI::instance()->set_tip (mouse_zoom_button, _("Select Zoom Range"));
+       ARDOUR_UI::instance()->set_tip (mouse_timefx_button, _("Stretch/Shrink Regions"));
+       ARDOUR_UI::instance()->set_tip (mouse_audition_button, _("Listen to Specific Regions"));
+       ARDOUR_UI::instance()->set_tip (join_object_range_button, _("Select/Move Objects or Ranges"));
+       ARDOUR_UI::instance()->set_tip (internal_edit_button, _("Edit Region Contents (e.g. notes)"));
+       ARDOUR_UI::instance()->set_tip (*_group_tabs, _("Groups: context-click for possible operations"));
+       ARDOUR_UI::instance()->set_tip (nudge_forward_button, _("Nudge Region/Selection Forwards"));
+       ARDOUR_UI::instance()->set_tip (nudge_backward_button, _("Nudge Region/Selection Backwards"));
+       ARDOUR_UI::instance()->set_tip (zoom_in_button, _("Zoom In"));
+       ARDOUR_UI::instance()->set_tip (zoom_out_button, _("Zoom Out"));
+       ARDOUR_UI::instance()->set_tip (zoom_out_full_button, _("Zoom to Session"));
+       ARDOUR_UI::instance()->set_tip (zoom_focus_selector, _("Zoom focus"));
+       ARDOUR_UI::instance()->set_tip (tav_expand_button, _("Expand Tracks"));
+       ARDOUR_UI::instance()->set_tip (tav_shrink_button, _("Shrink Tracks"));
+       ARDOUR_UI::instance()->set_tip (snap_type_selector, _("Snap/Grid Units"));
+       ARDOUR_UI::instance()->set_tip (snap_mode_selector, _("Snap/Grid Mode"));
+       ARDOUR_UI::instance()->set_tip (edit_point_selector, _("Edit point"));
+       ARDOUR_UI::instance()->set_tip (midi_sound_notes, _("Sound Notes"));
+       ARDOUR_UI::instance()->set_tip (midi_panic_button, _("Send note off and reset controller messages on all MIDI channels"));
+}
+
 void
 Editor::midi_panic ()
 {
        cerr << "MIDI panic\n";
 
-       if (session) {
-               session->midi_panic();
+       if (_session) {
+               _session->midi_panic();
        }
 }
 
@@ -2978,14 +3035,12 @@ Editor::setup_midi_toolbar ()
        /* Midi sound notes */
        midi_sound_notes.add (*(manage (new Image (::get_icon("midi_sound_notes")))));
        midi_sound_notes.set_relief(Gtk::RELIEF_NONE);
-       ARDOUR_UI::instance()->tooltips().set_tip (midi_sound_notes, _("Sound Notes"));
        midi_sound_notes.unset_flags (CAN_FOCUS);
 
        /* Panic */
 
        act = ActionManager::get_action (X_("MIDI"), X_("panic"));
        midi_panic_button.set_name("MidiPanicButton");
-       ARDOUR_UI::instance()->tooltips().set_tip (midi_panic_button, _("Send note off and reset controller messages on all MIDI channels"));
        act->connect_proxy (midi_panic_button);
 
        panic_box.pack_start (midi_sound_notes , true, true);
@@ -3002,7 +3057,7 @@ Editor::convert_drop_to_paths (
                guint                           /*info*/,
                guint                           /*time*/)
 {
-       if (session == 0) {
+       if (_session == 0) {
                return -1;
        }
 
@@ -3112,9 +3167,9 @@ Editor::new_tempo_section ()
 void
 Editor::map_transport_state ()
 {
-       ENSURE_GUI_THREAD (mem_fun(*this, &Editor::map_transport_state));
+       ENSURE_GUI_THREAD (*this, &Editor::map_transport_state)
 
-       if (session->transport_stopped()) {
+       if (_session && _session->transport_stopped()) {
                have_pending_keyboard_selection = false;
        }
 
@@ -3133,40 +3188,19 @@ Editor::State::~State ()
        delete selection;
 }
 
-void
-Editor::store_state (State& state) const
-{
-       *state.selection = *selection;
-}
-
-void
-Editor::restore_state (State *state)
-{
-       if (*selection == *state->selection) {
-               return;
-       }
-
-       *selection = *state->selection;
-       time_selection_changed ();
-       region_selection_changed ();
-
-       /* XXX other selection change handlers? */
-}
-
 void
 Editor::begin_reversible_command (string name)
 {
-       if (session) {
-               before = &get_state();
-               session->begin_reversible_command (name);
+       if (_session) {
+               _session->begin_reversible_command (name);
        }
 }
 
 void
 Editor::commit_reversible_command ()
 {
-       if (session) {
-               session->commit_reversible_command (new MementoCommand<Editor>(*this, before, &get_state()));
+       if (_session) {
+               _session->commit_reversible_command ();
        }
 }
 
@@ -3187,7 +3221,7 @@ Editor::set_route_group_mute (Route& route, bool yn)
 {
        RouteGroup *route_group = 0;
 
-       if ((route_group == route.route_group()) != 0) {
+       if ((route_group = route.route_group()) != 0) {
                route_group->apply (&Route::set_mute, yn, this);
        } else {
                route.set_mute (yn, this);
@@ -3199,20 +3233,20 @@ Editor::history_changed ()
 {
        string label;
 
-       if (undo_action && session) {
-               if (session->undo_depth() == 0) {
+       if (undo_action && _session) {
+               if (_session->undo_depth() == 0) {
                        label = _("Undo");
                } else {
-                       label = string_compose(_("Undo (%1)"), session->next_undo());
+                       label = string_compose(_("Undo (%1)"), _session->next_undo());
                }
                undo_action->property_label() = label;
        }
 
-       if (redo_action && session) {
-               if (session->redo_depth() == 0) {
+       if (redo_action && _session) {
+               if (_session->redo_depth() == 0) {
                        label = _("Redo");
                } else {
-                       label = string_compose(_("Redo (%1)"), session->next_redo());
+                       label = string_compose(_("Redo (%1)"), _session->next_redo());
                }
                redo_action->property_label() = label;
        }
@@ -3241,8 +3275,8 @@ Editor::duplicate_dialog (bool with_dialog)
 
        if (with_dialog) {
 
-               ArdourDialog win ("Duplicate");
-               Label  label (_("Number of Duplications:"));
+               ArdourDialog win (_("Duplicate"));
+               Label label (_("Number of Duplications:"));
                Adjustment adjustment (1.0, 1.0, 1000000.0, 1.0, 5.0);
                SpinButton spinner (adjustment, 0.0, 1);
                HBox hbox;
@@ -3257,7 +3291,7 @@ Editor::duplicate_dialog (bool with_dialog)
                */
 
                hbox.pack_start (spinner, PACK_EXPAND_PADDING, 12);
-               spinner.signal_activate().connect (sigc::bind (mem_fun (win, &ArdourDialog::response), RESPONSE_ACCEPT));
+               spinner.signal_activate().connect (sigc::bind (sigc::mem_fun (win, &ArdourDialog::response), RESPONSE_ACCEPT));
                spinner.grab_focus();
 
                hbox.show ();
@@ -3388,7 +3422,7 @@ Editor::cycle_edit_mode ()
 void
 Editor::edit_mode_selection_done ()
 {
-       if (session == 0) {
+       if (_session == 0) {
                return;
        }
 
@@ -3566,43 +3600,6 @@ Editor::mouse_select_button_release (GdkEventButton* ev)
        return true;
 }
 
-Editor::TrackViewList *
-Editor::get_valid_views (TimeAxisView* track, RouteGroup* group)
-{
-       TrackViewList::iterator i;
-
-       TrackViewList* v = new TrackViewList;
-
-       if (track == 0 && group == 0) {
-
-               /* all views */
-
-               for (i = track_views.begin(); i != track_views.end (); ++i) {
-                       v->push_back (*i);
-               }
-
-       } else if ((track != 0 && group == 0) || (track != 0 && group != 0 && !group->active_property (RouteGroup::Select))) {
-
-               /* just the view for this track
-                */
-
-               v->push_back (track);
-
-       } else {
-
-               /* views for all tracks in the route group */
-
-               for (i = track_views.begin(); i != track_views.end (); ++i) {
-
-                       if (group == 0 || ((*i)->route_group() == group && group->active_property (RouteGroup::Select))) {
-                               v->push_back (*i);
-                       }
-               }
-       }
-
-       return v;
-}
-
 void
 Editor::set_zoom_focus (ZoomFocus f)
 {
@@ -3685,10 +3682,7 @@ Editor::pane_allocation_handler (Allocation &alloc, Paned* which)
 void
 Editor::detach_tearoff (Box* /*b*/, Window* /*w*/)
 {
-       cerr << "remove tearoff\n";
-
-       if (tools_tearoff->torn_off() &&
-           mouse_mode_tearoff->torn_off()) {
+       if (_tools_tearoff->torn_off() && _mouse_mode_tearoff->torn_off()) {
                top_hbox.remove (toolbar_frame);
        }
 }
@@ -3696,7 +3690,6 @@ Editor::detach_tearoff (Box* /*b*/, Window* /*w*/)
 void
 Editor::reattach_tearoff (Box* /*b*/, Window* /*w*/, int32_t /*n*/)
 {
-       cerr << "reattach tearoff\n";
        if (toolbar_frame.get_parent() == 0) {
                top_hbox.pack_end (toolbar_frame);
        }
@@ -3733,12 +3726,35 @@ Editor::set_follow_playhead (bool yn)
        if (_follow_playhead != yn) {
                if ((_follow_playhead = yn) == true) {
                        /* catch up */
-                       update_current_screen ();
+                       reset_x_origin_to_follow_playhead ();
                }
                instant_save ();
        }
 }
 
+void
+Editor::toggle_stationary_playhead ()
+{
+       RefPtr<Action> act = ActionManager::get_action (X_("Editor"), X_("toggle-stationary-playhead"));
+       if (act) {
+               RefPtr<ToggleAction> tact = RefPtr<ToggleAction>::cast_dynamic(act);
+               set_stationary_playhead (tact->get_active());
+       }
+}
+
+void
+Editor::set_stationary_playhead (bool yn)
+{
+       if (_stationary_playhead != yn) {
+               if ((_stationary_playhead = yn) == true) {
+                       /* catch up */
+                       // FIXME need a 3.0 equivalent of this 2.X call
+                       // update_current_screen ();
+               }
+               instant_save ();
+       }
+}
+
 void
 Editor::toggle_xfade_active (boost::weak_ptr<Crossfade> wxfade)
 {
@@ -3766,7 +3782,7 @@ Editor::edit_xfade (boost::weak_ptr<Crossfade> wxfade)
                return;
        }
 
-       CrossfadeEditor cew (*session, xfade, xfade->fade_in().get_min_y(), 1.0);
+       CrossfadeEditor cew (_session, xfade, xfade->fade_in().get_min_y(), 1.0);
 
        ensure_float (cew);
 
@@ -3778,7 +3794,10 @@ Editor::edit_xfade (boost::weak_ptr<Crossfade> wxfade)
        }
 
        cew.apply ();
-       xfade->StateChanged (Change (~0));
+       PropertyChange all_crossfade_properties;
+       all_crossfade_properties.add (ARDOUR::Properties::active);
+       all_crossfade_properties.add (ARDOUR::Properties::follow_overlap);
+       xfade->PropertyChanged (all_crossfade_properties);
 }
 
 PlaylistSelector&
@@ -3818,8 +3837,8 @@ Editor::get_grid_type_as_beats (bool& success, nframes64_t position)
                break;
 
        case SnapToBar:
-               if (session) {
-                       return session->tempo_map().meter_at (position).beats_per_bar();
+               if (_session) {
+                       return _session->tempo_map().meter_at (position).beats_per_bar();
                }
                break;
 
@@ -3853,11 +3872,11 @@ Editor::get_nudge_distance (nframes64_t pos, nframes64_t& next)
 }
 
 void
-Editor::end_location_changed (Location* location)
+Editor::session_range_location_changed (Location* location)
 {
-       ENSURE_GUI_THREAD (bind (mem_fun(*this, &Editor::end_location_changed), location));
+       ENSURE_GUI_THREAD (*this, &Editor::session_range_location_changed, location)
        //reset_scrolling_region ();
-       nframes64_t session_span = location->start() + (nframes64_t) floorf (current_page_frames() * 0.10f);
+       nframes64_t const session_span = location->end() + (nframes64_t) floorf (current_page_frames() * 0.10f);
        horizontal_adjustment.set_upper (session_span / frames_per_unit);
 }
 
@@ -3930,8 +3949,8 @@ Editor::finish_cleanup ()
 Location*
 Editor::transport_loop_location()
 {
-       if (session) {
-               return session->locations()->auto_loop_location();
+       if (_session) {
+               return _session->locations()->auto_loop_location();
        } else {
                return 0;
        }
@@ -3940,8 +3959,8 @@ Editor::transport_loop_location()
 Location*
 Editor::transport_punch_location()
 {
-       if (session) {
-               return session->locations()->auto_punch_location();
+       if (_session) {
+               return _session->locations()->auto_punch_location();
        } else {
                return 0;
        }
@@ -3950,6 +3969,10 @@ Editor::transport_punch_location()
 bool
 Editor::control_layout_scroll (GdkEventScroll* ev)
 {
+       if (Keyboard::some_magic_widget_has_focus()) {
+               return false;
+       }
+
        switch (ev->direction) {
        case GDK_SCROLL_UP:
                scroll_tracks_up_line ();
@@ -3971,16 +3994,17 @@ Editor::control_layout_scroll (GdkEventScroll* ev)
 void
 Editor::session_state_saved (string snap_name)
 {
-       ENSURE_GUI_THREAD (bind (mem_fun(*this, &Editor::session_state_saved), snap_name));
-
+       ENSURE_GUI_THREAD (*this, &Editor::session_state_saved, snap_name);
+       
+       update_title ();        
        _snapshots->redisplay ();
 }
 
 void
 Editor::maximise_editing_space ()
 {
-       mouse_mode_tearoff->set_visible (false);
-       tools_tearoff->set_visible (false);
+       _mouse_mode_tearoff->set_visible (false);
+       _tools_tearoff->set_visible (false);
 
        pre_maximal_pane_position = edit_pane.get_position();
        pre_maximal_editor_width = this->get_width();
@@ -4010,8 +4034,8 @@ Editor::restore_editing_space ()
 
        unfullscreen();
 
-       mouse_mode_tearoff->set_visible (true);
-       tools_tearoff->set_visible (true);
+       _mouse_mode_tearoff->set_visible (true);
+       _tools_tearoff->set_visible (true);
        post_maximal_editor_width = this->get_width();
 
        edit_pane.set_position (pre_maximal_pane_position + abs(this->get_width() - pre_maximal_editor_width));
@@ -4028,8 +4052,8 @@ Editor::new_playlists (TimeAxisView* v)
 {
        begin_reversible_command (_("new playlists"));
        vector<boost::shared_ptr<ARDOUR::Playlist> > playlists;
-       session->playlists->get (playlists);
-       mapover_tracks (bind (mem_fun (*this, &Editor::mapped_use_new_playlist), playlists), v, RouteGroup::Edit);
+       _session->playlists->get (playlists);
+       mapover_tracks (sigc::bind (sigc::mem_fun (*this, &Editor::mapped_use_new_playlist), playlists), v, ARDOUR::Properties::edit.property_id);
        commit_reversible_command ();
 }
 
@@ -4044,8 +4068,8 @@ Editor::copy_playlists (TimeAxisView* v)
 {
        begin_reversible_command (_("copy playlists"));
        vector<boost::shared_ptr<ARDOUR::Playlist> > playlists;
-       session->playlists->get (playlists);
-       mapover_tracks (bind (mem_fun (*this, &Editor::mapped_use_copy_playlist), playlists), v, RouteGroup::Edit);
+       _session->playlists->get (playlists);
+       mapover_tracks (sigc::bind (sigc::mem_fun (*this, &Editor::mapped_use_copy_playlist), playlists), v, ARDOUR::Properties::edit.property_id);
        commit_reversible_command ();
 }
 
@@ -4059,8 +4083,8 @@ Editor::clear_playlists (TimeAxisView* v)
 {
        begin_reversible_command (_("clear playlists"));
        vector<boost::shared_ptr<ARDOUR::Playlist> > playlists;
-       session->playlists->get (playlists);
-       mapover_tracks (mem_fun (*this, &Editor::mapped_clear_playlist), v, RouteGroup::Edit);
+       _session->playlists->get (playlists);
+       mapover_tracks (sigc::mem_fun (*this, &Editor::mapped_clear_playlist), v, ARDOUR::Properties::edit.property_id);
        commit_reversible_command ();
 }
 
@@ -4095,10 +4119,12 @@ Editor::on_key_release_event (GdkEventKey* ev)
        // return key_press_focus_accelerator_handler (*this, ev);
 }
 
+/** Queue up a change to the viewport x origin.
+ *  @param frame New x origin.
+ */
 void
 Editor::reset_x_origin (nframes64_t frame)
 {
-       //cerr << "resetting x origin" << endl;
        queue_visual_change (frame);
 }
 
@@ -4151,10 +4177,11 @@ Editor::undo_visual_state ()
                return;
        }
 
+       redo_visual_stack.push_back (current_visual_state());
+
        VisualState* vs = undo_visual_stack.back();
        undo_visual_stack.pop_back();
        use_visual_state (*vs);
-       redo_visual_stack.push_back (vs);
 }
 
 void
@@ -4164,10 +4191,11 @@ Editor::redo_visual_state ()
                return;
        }
 
+       undo_visual_stack.push_back (current_visual_state());
+
        VisualState* vs = redo_visual_stack.back();
        redo_visual_stack.pop_back();
        use_visual_state (*vs);
-       undo_visual_stack.push_back (vs);
 }
 
 void
@@ -4257,14 +4285,8 @@ Editor::post_zoom ()
        }
 
        if (mouse_mode == MouseRange && selection->time.start () != selection->time.end_frame ()) {
-               if (!selection->tracks.empty()) {
-                       for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
-                               (*i)->reshow_selection (selection->time);
-                       }
-               } else {
-                       for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
-                               (*i)->reshow_selection (selection->time);
-                       }
+               for (TrackViewList::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
+                       (*i)->reshow_selection (selection->time);
                }
        }
 
@@ -4272,8 +4294,8 @@ Editor::post_zoom ()
 
        ZoomChanged (); /* EMIT_SIGNAL */
 
-       if (session) {
-               cef = session->current_end_frame() + (current_page_frames() / 10);// Add a little extra so we can see the end marker
+       if (_session) {
+               cef = _session->current_end_frame() + (current_page_frames() / 10);// Add a little extra so we can see the end marker
        }
        horizontal_adjustment.set_upper (cef / frames_per_unit);
 
@@ -4298,7 +4320,7 @@ Editor::queue_visual_change (nframes64_t where)
           can reach.
        */
 
-       if (session && (where > session->current_end_frame())) {
+       if (_session && (where > _session->current_end_frame())) {
                horizontal_adjustment.set_upper ((where + current_page_frames()) / frames_per_unit);
        }
 
@@ -4362,32 +4384,12 @@ Editor::idle_visual_changer ()
                vertical_adjustment.set_value (pending_visual_change.y_origin);
        }
 
-       nframes64_t csf=0, cef=0;
-       nframes64_t current_time_origin = (nframes64_t) floor (horizontal_adjustment.get_value() * frames_per_unit);
-
-       if (session) {
-               csf = session->current_start_frame();
-               cef = session->current_end_frame();
-       }
-
-       /* if we seek beyond the current end of the canvas, move the end */
-
-
-       if (last_time_origin == horizontal_adjustment.get_value() ) {
+       if (last_time_origin == horizontal_adjustment.get_value()) {
                /* changed signal not emitted */
                update_fixed_rulers ();
                redisplay_tempo (true);
        }
 
-       if (current_time_origin != pending_visual_change.time_origin) {
-               cef += current_page_frames() / 10; // Add a little extra so we can see the end marker
-               horizontal_adjustment.set_upper (cef / frames_per_unit);
-               horizontal_adjustment.set_value (pending_visual_change.time_origin / frames_per_unit);
-       } else {
-               update_fixed_rulers();
-               redisplay_tempo (true);
-       }
-
        _summary->set_overlays_dirty ();
 
        // cerr << "Editor::idle_visual_changer () called ha v:l:u:ps:fpu = " << horizontal_adjustment.get_value() << ":" << horizontal_adjustment.get_lower() << ":" << horizontal_adjustment.get_upper() << ":" << horizontal_adjustment.get_page_size() << ":" << frames_per_unit << endl;//DEBUG
@@ -4402,7 +4404,7 @@ struct EditorOrderTimeAxisSorter {
 };
 
 void
-Editor::sort_track_selection (TrackSelection* sel)
+Editor::sort_track_selection (TrackViewList* sel)
 {
        EditorOrderTimeAxisSorter cmp;
 
@@ -4430,7 +4432,7 @@ Editor::get_preferred_edit_position (bool ignore_playhead)
 
        switch (ep) {
        case EditAtPlayhead:
-               where = session->audible_frame();
+               where = _session->audible_frame();
                break;
 
        case EditAtSelectedMarker:
@@ -4464,7 +4466,7 @@ Editor::get_preferred_edit_position (bool ignore_playhead)
 void
 Editor::set_loop_range (nframes64_t start, nframes64_t end, string cmd)
 {
-       if (!session) return;
+       if (!_session) return;
 
        begin_reversible_command (cmd);
 
@@ -4472,17 +4474,17 @@ Editor::set_loop_range (nframes64_t start, nframes64_t end, string cmd)
 
        if ((tll = transport_loop_location()) == 0) {
                Location* loc = new Location (start, end, _("Loop"),  Location::IsAutoLoop);
-               XMLNode &before = session->locations()->get_state();
-               session->locations()->add (loc, true);
-               session->set_auto_loop_location (loc);
-               XMLNode &after = session->locations()->get_state();
-               session->add_command (new MementoCommand<Locations>(*(session->locations()), &before, &after));
+               XMLNode &before = _session->locations()->get_state();
+               _session->locations()->add (loc, true);
+               _session->set_auto_loop_location (loc);
+               XMLNode &after = _session->locations()->get_state();
+               _session->add_command (new MementoCommand<Locations>(*(_session->locations()), &before, &after));
        } else {
                XMLNode &before = tll->get_state();
                tll->set_hidden (false, this);
                tll->set (start, end);
                XMLNode &after = tll->get_state();
-               session->add_command (new MementoCommand<Location>(*tll, &before, &after));
+               _session->add_command (new MementoCommand<Location>(*tll, &before, &after));
        }
 
        commit_reversible_command ();
@@ -4491,7 +4493,7 @@ Editor::set_loop_range (nframes64_t start, nframes64_t end, string cmd)
 void
 Editor::set_punch_range (nframes64_t start, nframes64_t end, string cmd)
 {
-       if (!session) return;
+       if (!_session) return;
 
        begin_reversible_command (cmd);
 
@@ -4499,18 +4501,18 @@ Editor::set_punch_range (nframes64_t start, nframes64_t end, string cmd)
 
        if ((tpl = transport_punch_location()) == 0) {
                Location* loc = new Location (start, end, _("Loop"),  Location::IsAutoPunch);
-               XMLNode &before = session->locations()->get_state();
-               session->locations()->add (loc, true);
-               session->set_auto_loop_location (loc);
-               XMLNode &after = session->locations()->get_state();
-               session->add_command (new MementoCommand<Locations>(*(session->locations()), &before, &after));
+               XMLNode &before = _session->locations()->get_state();
+               _session->locations()->add (loc, true);
+               _session->set_auto_loop_location (loc);
+               XMLNode &after = _session->locations()->get_state();
+               _session->add_command (new MementoCommand<Locations>(*(_session->locations()), &before, &after));
        }
        else {
                XMLNode &before = tpl->get_state();
                tpl->set_hidden (false, this);
                tpl->set (start, end);
                XMLNode &after = tpl->get_state();
-               session->add_command (new MementoCommand<Location>(*tpl, &before, &after));
+               _session->add_command (new MementoCommand<Location>(*tpl, &before, &after));
        }
 
        commit_reversible_command ();
@@ -4522,9 +4524,9 @@ Editor::set_punch_range (nframes64_t start, nframes64_t end, string cmd)
  *  @param ts Tracks to look on; if this is empty, all tracks are examined.
  */
 void
-Editor::get_regions_at (RegionSelection& rs, nframes64_t where, const TrackSelection& ts) const
+Editor::get_regions_at (RegionSelection& rs, nframes64_t where, const TrackViewList& ts) const
 {
-       const TrackSelection* tracks;
+       const TrackViewList* tracks;
 
        if (ts.empty()) {
                tracks = &track_views;
@@ -4532,16 +4534,16 @@ Editor::get_regions_at (RegionSelection& rs, nframes64_t where, const TrackSelec
                tracks = &ts;
        }
 
-       for (TrackSelection::const_iterator t = tracks->begin(); t != tracks->end(); ++t) {
+       for (TrackViewList::const_iterator t = tracks->begin(); t != tracks->end(); ++t) {
                RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(*t);
                if (rtv) {
-                       boost::shared_ptr<Diskstream> ds;
+                       boost::shared_ptr<Track> tr;
                        boost::shared_ptr<Playlist> pl;
 
-                       if ((ds = rtv->get_diskstream()) && ((pl = ds->playlist()))) {
+                       if ((tr = rtv->track()) && ((pl = tr->playlist()))) {
 
                                Playlist::RegionList* regions = pl->regions_at (
-                                               (nframes64_t) floor ( (double)where * ds->speed()));
+                                               (nframes64_t) floor ( (double)where * tr->speed()));
 
                                for (Playlist::RegionList::iterator i = regions->begin(); i != regions->end(); ++i) {
                                        RegionView* rv = rtv->view()->find_view (*i);
@@ -4557,9 +4559,9 @@ Editor::get_regions_at (RegionSelection& rs, nframes64_t where, const TrackSelec
 }
 
 void
-Editor::get_regions_after (RegionSelection& rs, nframes64_t where, const TrackSelection& ts) const
+Editor::get_regions_after (RegionSelection& rs, nframes64_t where, const TrackViewList& ts) const
 {
-       const TrackSelection* tracks;
+       const TrackViewList* tracks;
 
        if (ts.empty()) {
                tracks = &track_views;
@@ -4567,16 +4569,16 @@ Editor::get_regions_after (RegionSelection& rs, nframes64_t where, const TrackSe
                tracks = &ts;
        }
 
-       for (TrackSelection::const_iterator t = tracks->begin(); t != tracks->end(); ++t) {
+       for (TrackViewList::const_iterator t = tracks->begin(); t != tracks->end(); ++t) {
                RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(*t);
                if (rtv) {
-                       boost::shared_ptr<Diskstream> ds;
+                       boost::shared_ptr<Track> tr;
                        boost::shared_ptr<Playlist> pl;
 
-                       if ((ds = rtv->get_diskstream()) && ((pl = ds->playlist()))) {
+                       if ((tr = rtv->track()) && ((pl = tr->playlist()))) {
 
                                Playlist::RegionList* regions = pl->regions_touched (
-                                               (nframes64_t) floor ( (double)where * ds->speed()), max_frames);
+                                               (nframes64_t) floor ( (double)where * tr->speed()), max_frames);
 
                                for (Playlist::RegionList::iterator i = regions->begin(); i != regions->end(); ++i) {
 
@@ -4614,22 +4616,25 @@ Editor::get_regions_for_action (RegionSelection& rs, bool allow_entered, bool al
 
        if (allow_edit_position) {
 
-               TrackSelection tracks = selection->tracks;
+               TrackViewList tracks = selection->tracks;
 
                /* tracks is currently the set of selected tracks; add any other tracks that
                 * have regions that are in the same edit-activated route group as one of
                 * our regions */
                for (RegionSelection::iterator i = rs.begin (); i != rs.end(); ++i) {
 
-                       RouteGroup* g = (*i)->get_time_axis_view().route_group ();
-                       if (g && g->active_property (RouteGroup::Edit)) {
-                               tracks.add (axis_views_from_routes (g->route_list()));
-                       }
+                       RouteGroup* g = (*i)->get_time_axis_view().route_group ();
+                       if (g && g->is_active() && g->is_edit()) {
+                               tracks.add (axis_views_from_routes (g->route_list()));
+                       }
+                       
                }
 
-               /* now find regions that are at the edit position on those tracks */
-               nframes64_t const where = get_preferred_edit_position ();
-               get_regions_at (rs, where, tracks);
+               if (!tracks.empty()) {
+                       /* now find regions that are at the edit position on those tracks */
+                       nframes64_t const where = get_preferred_edit_position ();
+                       get_regions_at (rs, where, tracks);
+               }
        }
 }
 
@@ -4645,14 +4650,14 @@ Editor::get_regions_corresponding_to (boost::shared_ptr<Region> region, vector<R
                        boost::shared_ptr<Playlist> pl;
                        vector<boost::shared_ptr<Region> > results;
                        RegionView* marv;
-                       boost::shared_ptr<Diskstream> ds;
+                       boost::shared_ptr<Track> tr;
 
-                       if ((ds = tatv->get_diskstream()) == 0) {
+                       if ((tr = tatv->track()) == 0) {
                                /* bus */
                                continue;
                        }
 
-                       if ((pl = (ds->playlist())) != 0) {
+                       if ((pl = (tr->playlist())) != 0) {
                                pl->get_region_list_equivalent_regions (region, results);
                        }
 
@@ -4673,7 +4678,7 @@ Editor::show_rhythm_ferret ()
                rhythm_ferret = new RhythmFerret(*this);
        }
 
-       rhythm_ferret->set_session (session);
+       rhythm_ferret->set_session (_session);
        rhythm_ferret->show ();
        rhythm_ferret->present ();
 }
@@ -4682,7 +4687,7 @@ void
 Editor::show_global_port_matrix (ARDOUR::DataType t)
 {
        if (_global_port_matrix[t] == 0) {
-               _global_port_matrix[t] = new GlobalPortMatrixWindow (*session, t);
+               _global_port_matrix[t] = new GlobalPortMatrixWindow (_session, t);
        }
 
        _global_port_matrix[t]->show ();
@@ -4695,7 +4700,7 @@ Editor::first_idle ()
 
        if (track_views.size() > 1) {
                dialog = new MessageDialog (*this,
-                                           _("Please wait while Ardour loads visual data"),
+                                           string_compose (_("Please wait while %1 loads visual data"), PROGRAM_NAME),
                                            true,
                                            Gtk::MESSAGE_INFO,
                                            Gtk::BUTTONS_NONE);
@@ -4715,8 +4720,8 @@ Editor::first_idle ()
        _have_idled = true;
 }
 
-static gboolean
-_idle_resizer (gpointer arg)
+gboolean
+Editor::_idle_resize (gpointer arg)
 {
        return ((Editor*)arg)->idle_resize ();
 }
@@ -4725,7 +4730,7 @@ void
 Editor::add_to_idle_resize (TimeAxisView* view, int32_t h)
 {
        if (resize_idle_id < 0) {
-               resize_idle_id = g_idle_add (_idle_resizer, this);
+               resize_idle_id = g_idle_add (_idle_resize, this);
                _pending_resize_amount = 0;
        }
 
@@ -4740,7 +4745,7 @@ Editor::add_to_idle_resize (TimeAxisView* view, int32_t h)
        min_resulting = min (min_resulting, int32_t (_pending_resize_view->current_height()) + _pending_resize_amount);
 
        if (selection->tracks.contains (_pending_resize_view)) {
-               for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
+               for (TrackViewList::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
                        min_resulting = min (min_resulting, int32_t ((*i)->current_height()) + _pending_resize_amount);
                }
        }
@@ -4764,13 +4769,14 @@ Editor::idle_resize ()
        if (dynamic_cast<AutomationTimeAxisView*> (_pending_resize_view) == 0 &&
            selection->tracks.contains (_pending_resize_view)) {
 
-               for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
+               for (TrackViewList::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
                        if (*i != _pending_resize_view) {
                                (*i)->idle_resize ((*i)->current_height() + _pending_resize_amount);
                        }
                }
        }
 
+        _pending_resize_amount = 0;
        flush_canvas ();
        _group_tabs->set_dirty ();
        resize_idle_id = -1;
@@ -4781,9 +4787,15 @@ Editor::idle_resize ()
 void
 Editor::located ()
 {
-       ENSURE_GUI_THREAD (mem_fun (*this, &Editor::located));
+       ENSURE_GUI_THREAD (*this, &Editor::located);
+
+       playhead_cursor->set_position (_session->audible_frame ());
+       if (_follow_playhead && !_pending_initial_locate) {
+               reset_x_origin_to_follow_playhead ();
+       }
 
        _pending_locate_request = false;
+       _pending_initial_locate = false;
 }
 
 void
@@ -4799,12 +4811,12 @@ Editor::streamview_height_changed ()
 }
 
 TimeAxisView*
-Editor::axis_view_from_route (Route* r) const
+Editor::axis_view_from_route (boost::shared_ptr<Route> r) const
 {
        TrackViewList::const_iterator j = track_views.begin ();
        while (j != track_views.end()) {
                RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (*j);
-               if (rtv && rtv->route().get() == r) {
+               if (rtv && rtv->route() == r) {
                        return rtv;
                }
                ++j;
@@ -4814,12 +4826,12 @@ Editor::axis_view_from_route (Route* r) const
 }
 
 
-TrackSelection
-Editor::axis_views_from_routes (list<Route*> r) const
+TrackViewList
+Editor::axis_views_from_routes (boost::shared_ptr<RouteList> r) const
 {
-       TrackSelection t;
+       TrackViewList t;
 
-       for (list<Route*>::const_iterator i = r.begin(); i != r.end(); ++i) {
+       for (RouteList::const_iterator i = r->begin(); i != r->end(); ++i) {
                TimeAxisView* tv = axis_view_from_route (*i);
                if (tv) {
                        t.push_back (tv);
@@ -4833,7 +4845,7 @@ Editor::axis_views_from_routes (list<Route*> r) const
 void
 Editor::handle_new_route (RouteList& routes)
 {
-       ENSURE_GUI_THREAD (bind (mem_fun (*this, &Editor::handle_new_route), routes));
+       ENSURE_GUI_THREAD (*this, &Editor::handle_new_route, routes)
 
        RouteTimeAxisView *rtv;
        list<RouteTimeAxisView*> new_views;
@@ -4841,16 +4853,16 @@ Editor::handle_new_route (RouteList& routes)
        for (RouteList::iterator x = routes.begin(); x != routes.end(); ++x) {
                boost::shared_ptr<Route> route = (*x);
 
-               if (route->is_hidden()) {
+               if (route->is_hidden() || route->is_monitor()) {
                        continue;
                }
 
                DataType dt = route->input()->default_type();
 
                if (dt == ARDOUR::DataType::AUDIO) {
-                       rtv = new AudioTimeAxisView (*this, *session, route, *track_canvas);
+                       rtv = new AudioTimeAxisView (*this, _session, route, *track_canvas);
                } else if (dt == ARDOUR::DataType::MIDI) {
-                       rtv = new MidiTimeAxisView (*this, *session, route, *track_canvas);
+                       rtv = new MidiTimeAxisView (*this, _session, route, *track_canvas);
                } else {
                        throw unknown_type();
                }
@@ -4860,10 +4872,8 @@ Editor::handle_new_route (RouteList& routes)
 
                rtv->effective_gain_display ();
 
-               rtv->view()->RegionViewAdded.connect (mem_fun (*this, &Editor::region_view_added));
-               rtv->view()->HeightChanged.connect (mem_fun (*this, &Editor::streamview_height_changed));
-
-               rtv->GoingAway.connect (bind (mem_fun(*this, &Editor::remove_route), rtv));
+               rtv->view()->RegionViewAdded.connect (sigc::mem_fun (*this, &Editor::region_view_added));
+               rtv->view()->HeightChanged.connect (sigc::mem_fun (*this, &Editor::streamview_height_changed));
        }
 
        _routes->routes_added (new_views);
@@ -4878,49 +4888,62 @@ Editor::handle_new_route (RouteList& routes)
 }
 
 void
-Editor::remove_route (TimeAxisView *tv)
+Editor::timeaxisview_deleted (TimeAxisView *tv)
 {
-       ENSURE_GUI_THREAD(bind (mem_fun(*this, &Editor::remove_route), tv));
-
-       TrackViewList::iterator i;
-
-       boost::shared_ptr<Route> route;
-       RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (tv);
-       if (rtav) {
-               route = rtav->route ();
+       if (_session && _session->deletion_in_progress()) {
+               /* the situation is under control */
+               return;
        }
+
+       ENSURE_GUI_THREAD (*this, &Editor::timeaxisview_deleted, tv);
                
-       TimeAxisView* next_tv = 0;
+
+       _routes->route_removed (tv);
 
        if (tv == entered_track) {
                entered_track = 0;
        }
+       
+       /* remove it from the list of track views */
+
+       TrackViewList::iterator i;
 
        if ((i = find (track_views.begin(), track_views.end(), tv)) != track_views.end()) {
+               i = track_views.erase (i);
+       }
 
-               i = track_views.erase (i);
+       /* update whatever the current mixer strip is displaying, if revelant */
 
-               if (track_views.empty()) {
-                       next_tv = 0;
-               } else if (i == track_views.end()) {
-                       next_tv = track_views.front();
-               } else {
-                      next_tv = (*i);
-               }
-       }
+       boost::shared_ptr<Route> route;
+       RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (tv);
+
+       if (rtav) {
+               route = rtav->route ();
+       } 
 
        if (current_mixer_strip && current_mixer_strip->route() == route) {
 
-               if (next_tv) {
-                       set_selected_mixer_strip (*next_tv);
-               } else {
-                       /* make the editor mixer strip go away setting the
-                        * button to inactive (which also unticks the menu option)
-                        */
+               TimeAxisView* next_tv;
 
-                       ActionManager::uncheck_toggleaction ("<Actions>/Editor/show-editor-mixer");
-               }
-       }
+               if (track_views.empty()) {
+                       next_tv = 0;
+               } else if (i == track_views.end()) {
+                       next_tv = track_views.front();
+               } else {
+                       next_tv = (*i);
+               }
+               
+               
+               if (next_tv) {
+                       set_selected_mixer_strip (*next_tv);
+               } else {
+                       /* make the editor mixer strip go away setting the
+                        * button to inactive (which also unticks the menu option)
+                        */
+                       
+                       ActionManager::uncheck_toggleaction ("<Actions>/Editor/show-editor-mixer");
+               }
+       } 
 }
 
 void
@@ -4939,7 +4962,7 @@ Editor::hide_track_in_display (TimeAxisView& tv, bool /*temponly*/)
 bool
 Editor::sync_track_view_list_and_routes ()
 {
-       track_views = TrackSelection (_routes->views ());
+       track_views = TrackViewList (_routes->views ());
 
        _summary->set_dirty ();
        _group_tabs->set_dirty ();
@@ -4974,7 +4997,7 @@ Editor::get_route_view_by_id (PBD::ID& id)
 void
 Editor::fit_route_group (RouteGroup *g)
 {
-       TrackSelection ts = axis_views_from_routes (g->route_list ());
+       TrackViewList ts = axis_views_from_routes (g->route_list ());
        fit_tracks (ts);
 }
 
@@ -4984,18 +5007,18 @@ Editor::consider_auditioning (boost::shared_ptr<Region> region)
        boost::shared_ptr<AudioRegion> r = boost::dynamic_pointer_cast<AudioRegion> (region);
 
        if (r == 0) {
-               session->cancel_audition ();
+               _session->cancel_audition ();
                return;
        }
 
-       if (session->is_auditioning()) {
-               session->cancel_audition ();
+       if (_session->is_auditioning()) {
+               _session->cancel_audition ();
                if (r == last_audition_region) {
                        return;
                }
        }
 
-       session->audition_region (r);
+       _session->audition_region (r);
        last_audition_region = r;
 }
 
@@ -5007,27 +5030,33 @@ Editor::hide_a_region (boost::shared_ptr<Region> r)
 }
 
 void
-Editor::remove_a_region (boost::shared_ptr<Region> r)
+Editor::show_a_region (boost::shared_ptr<Region> r)
 {
-       session->remove_region_from_region_list (r);
+       r->set_hidden (false);
 }
 
 void
 Editor::audition_region_from_region_list ()
 {
-       _regions->selection_mapover (mem_fun (*this, &Editor::consider_auditioning));
+       _regions->selection_mapover (sigc::mem_fun (*this, &Editor::consider_auditioning));
 }
 
 void
 Editor::hide_region_from_region_list ()
 {
-       _regions->selection_mapover (mem_fun (*this, &Editor::hide_a_region));
+       _regions->selection_mapover (sigc::mem_fun (*this, &Editor::hide_a_region));
+}
+
+void
+Editor::show_region_in_region_list ()
+{
+       _regions->selection_mapover (sigc::mem_fun (*this, &Editor::show_a_region));
 }
 
 void
 Editor::start_step_editing ()
 {
-       step_edit_connection = Glib::signal_timeout().connect (mem_fun (*this, &Editor::check_step_edit), 20);
+       step_edit_connection = Glib::signal_timeout().connect (sigc::mem_fun (*this, &Editor::check_step_edit), 20);
 }
 
 void
@@ -5065,3 +5094,211 @@ Editor::horizontal_scroll_right ()
 {
        reset_x_origin (leftmost_position() + current_page_frames() / 5);
 }
+
+/** Queue a change for the Editor viewport x origin to follow the playhead */
+void
+Editor::reset_x_origin_to_follow_playhead ()
+{
+       nframes64_t const frame = playhead_cursor->current_frame;
+
+       if (frame < leftmost_frame || frame > leftmost_frame + current_page_frames()) {
+
+               if (_session->transport_speed() < 0) {
+                       
+                       if (frame > (current_page_frames() / 2)) {
+                               center_screen (frame-(current_page_frames()/2));
+                       } else {
+                               center_screen (current_page_frames()/2);
+                       }
+                       
+               } else {
+                                               
+                       if (frame < leftmost_frame) {
+                               /* moving left */
+                               nframes64_t l = 0;
+                               if (_session->transport_rolling()) {
+                                       /* rolling; end up with the playhead at the right of the page */
+                                       l = frame - current_page_frames ();
+                               } else {
+                                       /* not rolling: end up with the playhead 3/4 of the way along the page */
+                                       l = frame - (3 * current_page_frames() / 4);
+                               }
+                               
+                               if (l < 0) {
+                                       l = 0;
+                               }
+                               
+                               center_screen_internal (l + (current_page_frames() / 2), current_page_frames ());
+                       } else {
+                               /* moving right */
+                               if (_session->transport_rolling()) {
+                                       /* rolling: end up with the playhead on the left of the page */
+                                       center_screen_internal (frame + (current_page_frames() / 2), current_page_frames ());
+                               } else {
+                                       /* not rolling: end up with the playhead 1/4 of the way along the page */
+                                       center_screen_internal (frame + (current_page_frames() / 4), current_page_frames ());
+                               }
+                       }
+               }
+       }
+}
+
+void
+Editor::super_rapid_screen_update ()
+{
+       if (!_session || !_session->engine().running()) {
+               return;
+       }
+
+       /* METERING / MIXER STRIPS */
+
+       /* update track meters, if required */
+       if (is_mapped() && meters_running) {
+               RouteTimeAxisView* rtv;
+               for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
+                       if ((rtv = dynamic_cast<RouteTimeAxisView*>(*i)) != 0) {
+                               rtv->fast_update ();
+                       }
+               }
+       }
+
+       /* and any current mixer strip */
+       if (current_mixer_strip) {
+               current_mixer_strip->fast_update ();
+       }
+
+       /* PLAYHEAD AND VIEWPORT */
+
+       nframes64_t const frame = _session->audible_frame();
+
+       /* There are a few reasons why we might not update the playhead / viewport stuff:
+        *
+        * 1.  we don't update things when there's a pending locate request, otherwise
+        *     when the editor requests a locate there is a chance that this method
+        *     will move the playhead before the locate request is processed, causing
+        * 2.  if we're not rolling, there's nothing to do here (locates are handled elsewhere).
+        * 3.  if we're still at the same frame that we were last time, there's nothing to do.
+        */
+
+       if (!_pending_locate_request && _session->transport_speed() != 0 && frame != last_update_frame) {
+
+               last_update_frame = frame;
+
+               if (!_dragging_playhead) {
+                       playhead_cursor->set_position (frame);
+               }
+
+                if (!_stationary_playhead) {
+
+                        if (!_dragging_playhead && _follow_playhead && _session->requested_return_frame() < 0) {
+                                reset_x_origin_to_follow_playhead ();
+                        }
+
+                } else {
+                       
+                        /* don't do continuous scroll till the new position is in the rightmost quarter of the
+                           editor canvas
+                        */
+#if 0                        
+                        // FIXME DO SOMETHING THAT WORKS HERE - this is 2.X code                         
+                        double target = ((double)frame - (double)current_page_frames()/2.0) / frames_per_unit;
+                        if (target <= 0.0) {
+                                target = 0.0;
+                        }
+                        if (fabs(target - current) < current_page_frames() / frames_per_unit) {
+                                target = (target * 0.15) + (current * 0.85);
+                        } else {
+                                /* relax */
+                        }
+                        
+                        current = target;
+                        horizontal_adjustment.set_value (current);
+#endif
+                }
+               
+       }
+}
+
+
+void
+Editor::session_going_away ()
+{
+       _have_idled = false;
+
+       _session_connections.drop_connections ();
+
+       super_rapid_screen_update_connection.disconnect ();
+       
+       selection->clear ();
+       cut_buffer->clear ();
+
+       clicked_regionview = 0;
+       clicked_axisview = 0;
+       clicked_routeview = 0;
+       clicked_crossfadeview = 0;
+       entered_regionview = 0;
+       entered_track = 0;
+       last_update_frame = 0;
+       _drags->abort ();
+
+       playhead_cursor->canvas_item.hide ();
+
+       /* rip everything out of the list displays */
+
+       _regions->clear ();
+       _routes->clear ();
+       _route_groups->clear ();
+
+       /* do this first so that deleting a track doesn't reset cms to null
+          and thus cause a leak.
+       */
+
+       if (current_mixer_strip) {
+               if (current_mixer_strip->get_parent() != 0) {
+                       global_hpacker.remove (*current_mixer_strip);
+               }
+               delete current_mixer_strip;
+               current_mixer_strip = 0;
+       }
+
+       /* delete all trackviews */
+
+       for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
+               delete *i;
+       }
+       track_views.clear ();
+
+       zoom_range_clock.set_session (0);
+       nudge_clock.set_session (0);
+
+       editor_list_button.set_active(false);
+       editor_list_button.set_sensitive(false);
+
+       /* clear tempo/meter rulers */
+       remove_metric_marks ();
+       hide_measures ();
+       clear_marker_display ();
+
+       delete current_bbt_points;
+       current_bbt_points = 0;
+
+       /* get rid of any existing editor mixer strip */
+
+       WindowTitle title(Glib::get_application_name());
+       title += _("Editor");
+
+       set_title (title.get_string());
+
+       SessionHandlePtr::session_going_away ();
+}
+
+
+void
+Editor::show_editor_list (bool yn)
+{
+       if (yn) {
+               the_notebook.show();
+       } else {
+               the_notebook.hide();
+       }
+}