Fix for segfault on autoscroll (especially when dragging regions).
[ardour.git] / gtk2_ardour / editor.cc
index 16a8e5d92228e8b7aa0a1fe757894a06d8348316..ecf3870c7ffe43ddb34ef7155f754f3499f85151 100644 (file)
@@ -28,6 +28,7 @@
 
 #include <pbd/convert.h>
 #include <pbd/error.h>
+#include <pbd/memento_command.h>
 
 #include <gtkmm/image.h>
 #include <gdkmm/color.h>
 #include "keyboard.h"
 #include "marker.h"
 #include "playlist_selector.h"
-#include "regionview.h"
+#include "audio_region_view.h"
 #include "rgb_macros.h"
 #include "selection.h"
-#include "streamview.h"
+#include "audio_streamview.h"
 #include "time_axis_view.h"
 #include "utils.h"
 #include "crossfade_view.h"
@@ -84,6 +85,7 @@
 using namespace std;
 using namespace sigc;
 using namespace ARDOUR;
+using namespace PBD;
 using namespace Gtk;
 using namespace Glib;
 using namespace Gtkmm2ext;
@@ -96,15 +98,6 @@ const double Editor::timebar_height = 15.0;
 
 #include "editor_xpms"
 
-static const int32_t slide_index = 0;
-static const int32_t splice_index = 1;
-
-static const gchar *edit_mode_strings[] = {
-       N_("Slide"),
-       N_("Splice"),
-       0
-};
-
 static const gchar *snap_type_strings[] = {
        N_("None"),
        N_("CD Frames"),
@@ -130,17 +123,17 @@ static const gchar *snap_type_strings[] = {
 };
 
 static const gchar *snap_mode_strings[] = {
-       N_("Normal"),
-       N_("Magnetic"),
+       N_("Normal Snap"),
+       N_("Magnetic Snap"),
        0
 };
 
 static const gchar *zoom_focus_strings[] = {
-       N_("Left"),
-       N_("Right"),
-       N_("Center"),
-       N_("Playhead"),
-       N_("Edit Cursor"),
+       N_("Focus Left"),
+       N_("Focus Right"),
+       N_("Focus Center"),
+       N_("Focus Playhead"),
+       N_("Focus Edit Cursor"),
        0
 };
 
@@ -203,37 +196,20 @@ Editor::Editor (AudioEngine& eng)
 
          /* tool bar related */
 
-         selection_start_clock (X_("SelectionStartClock"), true),
-         selection_end_clock (X_("SelectionEndClock"), true),
          edit_cursor_clock (X_("EditCursorClock"), true),
          zoom_range_clock (X_("ZoomRangeClock"), true, true),
          
          toolbar_selection_clock_table (2,3),
          
-         mouse_mode_button_table (2, 3),
-
-         mouse_select_button (_("range")),
-         mouse_move_button (_("object")),
-         mouse_gain_button (_("gain")),
-         mouse_zoom_button (_("zoom")),
-         mouse_timefx_button (_("timefx")),
-         mouse_audition_button (_("listen")),
-
          automation_mode_button (_("mode")),
          global_automation_button (_("automation")),
 
-         edit_mode_label (_("Edit Mode")),
-         snap_type_label (_("Snap To")),
-         snap_mode_label(_("Snap Mode")),
-         zoom_focus_label (_("Zoom Focus")),
-
          /* <CMT Additions> */
          image_socket_listener(0),
          /* </CMT Additions> */
 
          /* nudge */
 
-         nudge_label (_("Nudge")),
          nudge_clock (X_("NudgeClock"), true, true)
 
 {
@@ -261,7 +237,6 @@ Editor::Editor (AudioEngine& eng)
        latest_regionview = 0;
        last_update_frame = 0;
        drag_info.item = 0;
-       last_audition_region = 0;
        current_mixer_strip = 0;
        current_bbt_points = 0;
 
@@ -273,6 +248,7 @@ Editor::Editor (AudioEngine& eng)
        bbt_beat_subdivision = 4;
        canvas_width = 0;
        canvas_height = 0;
+       autoscroll_active = false;
        autoscroll_timeout_tag = -1;
        interthread_progress_window = 0;
 
@@ -287,7 +263,6 @@ Editor::Editor (AudioEngine& eng)
        first_action_message = 0;
        export_dialog = 0;
        show_gain_after_trim = false;
-       no_zoom_repos_update = false;
        ignore_route_list_reorder = false;
        no_route_list_redisplay = false;
        verbose_cursor_on = true;
@@ -300,7 +275,6 @@ Editor::Editor (AudioEngine& eng)
        _xfade_visibility = true;
        editor_ruler_menu = 0;
        no_ruler_shown_update = false;
-       edit_hscroll_dragging = false;
        edit_group_list_menu = 0;
        route_list_menu = 0;
        region_list_menu = 0;
@@ -344,6 +318,7 @@ Editor::Editor (AudioEngine& eng)
        reset_hscrollbar_stepping ();
        
        zoom_focus = ZoomFocusLeft;
+       set_zoom_focus (ZoomFocusLeft);
        zoom_range_clock.ValueChanged.connect (mem_fun(*this, &Editor::zoom_adjustment_changed));
 
        initialize_rulers ();
@@ -464,36 +439,7 @@ Editor::Editor (AudioEngine& eng)
 
        edit_packer.attach (edit_hscrollbar,         2, 3, 2, 3,    FILL|EXPAND,  FILL, 0, 0);
 
-       zoom_in_button.set_name ("EditorTimeButton");
-       zoom_out_button.set_name ("EditorTimeButton");
-       ARDOUR_UI::instance()->tooltips().set_tip (zoom_in_button, _("Zoom in"));
-       ARDOUR_UI::instance()->tooltips().set_tip (zoom_out_button, _("Zoom out"));
-
-       zoom_out_full_button.set_name ("EditorTimeButton");
-       ARDOUR_UI::instance()->tooltips().set_tip (zoom_out_full_button, _("Zoom to session"));
-
-       zoom_in_button.add (*(manage (new Image (Stock::ZOOM_IN, ICON_SIZE_BUTTON))));
-       zoom_out_button.add (*(manage (new Image (Stock::ZOOM_OUT, ICON_SIZE_BUTTON))));
-       zoom_out_full_button.add (*(manage (new Image (Stock::ZOOM_FIT, ICON_SIZE_BUTTON))));
-       
-       zoom_in_button.signal_clicked().connect (bind (mem_fun(*this, &Editor::temporal_zoom_step), false));
-       zoom_out_button.signal_clicked().connect (bind (mem_fun(*this, &Editor::temporal_zoom_step), true));
-       zoom_out_full_button.signal_clicked().connect (mem_fun(*this, &Editor::temporal_zoom_session));
-       
-       zoom_indicator_box.pack_start (zoom_out_button, false, false);
-       zoom_indicator_box.pack_start (zoom_in_button, false, false);
-       zoom_indicator_box.pack_start (zoom_range_clock, false, false); 
-       zoom_indicator_box.pack_start (zoom_out_full_button, false, false);
-       
-       zoom_indicator_label.set_text (_("Zoom Span"));
-       zoom_indicator_label.set_name ("ToolBarLabel");
-
-       zoom_indicator_vbox.set_spacing (3);
-       zoom_indicator_vbox.set_border_width (3);
-       zoom_indicator_vbox.pack_start (zoom_indicator_label, false, false);
-       zoom_indicator_vbox.pack_start (zoom_indicator_box, false, false);
-
-       bottom_hbox.set_border_width (3);
+       bottom_hbox.set_border_width (2);
        bottom_hbox.set_spacing (3);
 
        route_display_model = ListStore::create(route_display_columns);
@@ -689,7 +635,7 @@ Editor::Editor (AudioEngine& eng)
        edit_pane.pack1 (edit_packer, true, true);
        edit_pane.pack2 (the_notebook, false, true);
        
-       edit_pane.signal_size_allocate().connect_notify (bind (mem_fun(*this, &Editor::pane_allocation_handler), static_cast<Paned*> (&edit_pane)));
+       edit_pane.signal_size_allocate().connect (bind (mem_fun(*this, &Editor::pane_allocation_handler), static_cast<Paned*> (&edit_pane)));
 
        top_hbox.pack_start (toolbar_frame, true, true);
 
@@ -716,15 +662,15 @@ Editor::Editor (AudioEngine& eng)
        _playlist_selector = new PlaylistSelector();
        _playlist_selector->signal_delete_event().connect (bind (sigc::ptr_fun (just_hide_it), static_cast<Window *> (_playlist_selector)));
 
-       AudioRegionView::AudioRegionViewGoingAway.connect (mem_fun(*this, &Editor::catch_vanishing_audio_regionview));
+       RegionView::RegionViewGoingAway.connect (mem_fun(*this, &Editor::catch_vanishing_regionview));
 
        /* nudge stuff */
 
        nudge_forward_button.add (*(manage (new Image (get_xpm("right_arrow.xpm")))));
        nudge_backward_button.add (*(manage (new Image (get_xpm("left_arrow.xpm")))));
 
-       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"));
+       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");
@@ -746,6 +692,9 @@ Editor::Editor (AudioEngine& eng)
        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));
+
+       Config->ParameterChanged.connect (mem_fun (*this, &Editor::parameter_changed));
+
        constructed = true;
        instant_save ();
 }
@@ -774,7 +723,7 @@ Editor::add_toplevel_controls (Container& cont)
 }
 
 void
-Editor::catch_vanishing_audio_regionview (AudioRegionView *rv)
+Editor::catch_vanishing_regionview (RegionView *rv)
 {
        /* note: the selection will take care of the vanishing
           audioregionview by itself.
@@ -790,7 +739,7 @@ Editor::catch_vanishing_audio_regionview (AudioRegionView *rv)
 }
 
 void
-Editor::set_entered_regionview (AudioRegionView* rv)
+Editor::set_entered_regionview (RegionView* rv)
 {
        if (rv == entered_regionview) {
                return;
@@ -847,19 +796,19 @@ Editor::tie_vertical_scrolling ()
 void
 Editor::set_frames_per_unit (double fpu)
 {
-       jack_nframes_t frames;
+       nframes_t frames;
 
        if (fpu == frames_per_unit) {
                return;
        }
 
-       if (fpu < 1.0) {
-               fpu = 1.0;
+       if (fpu < 2.0) {
+               fpu = 2.0;
        }
 
        // convert fpu to frame count
 
-       frames = (jack_nframes_t) floor (fpu * canvas_width);
+       frames = (nframes_t) floor (fpu * canvas_width);
        
        /* don't allow zooms that fit more than the maximum number
           of frames into an 800 pixel wide space.
@@ -869,22 +818,16 @@ Editor::set_frames_per_unit (double fpu)
                return;
        }
 
+       if (fpu == frames_per_unit) {
+               return;
+       }
+
        frames_per_unit = fpu;
 
        if (frames != zoom_range_clock.current_duration()) {
                zoom_range_clock.set (frames);
        }
 
-       /* only update these if we not about to call reposition_x_origin,
-          which will do the same updates.
-       */
-       
-       if (!no_zoom_repos_update) {
-               horizontal_adjustment.set_value (leftmost_frame/frames_per_unit);
-               update_fixed_rulers ();
-               tempo_map_changed (Change (0));
-       }
-
        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) {
@@ -912,7 +855,7 @@ Editor::set_frames_per_unit (double fpu)
 void
 Editor::instant_save ()
 {
-        if (!constructed || !ARDOUR_UI::instance()->session_loaded) {
+       if (!constructed || !ARDOUR_UI::instance()->session_loaded) {
                return;
        }
 
@@ -924,12 +867,12 @@ Editor::instant_save ()
 }
 
 void
-Editor::reposition_x_origin (jack_nframes_t frame)
+Editor::reposition_x_origin (nframes_t frame)
 {
        if (frame != leftmost_frame) {
                leftmost_frame = frame;
                
-               jack_nframes_t rightmost_frame = leftmost_frame + current_page_frames ();
+               nframes_t rightmost_frame = leftmost_frame + current_page_frames ();
 
                if (rightmost_frame > last_canvas_frame) {
                        last_canvas_frame = rightmost_frame;
@@ -937,6 +880,9 @@ Editor::reposition_x_origin (jack_nframes_t frame)
                }
 
                horizontal_adjustment.set_value (frame/frames_per_unit);
+       } else {
+               update_fixed_rulers();
+               tempo_map_changed (Change (0));
        }
 }
 
@@ -952,7 +898,7 @@ Editor::edit_cursor_clock_changed()
 void
 Editor::zoom_adjustment_changed ()
 {
-       if (session == 0 || no_zoom_repos_update) {
+       if (session == 0) {
                return;
        }
 
@@ -960,10 +906,10 @@ Editor::zoom_adjustment_changed ()
 
        if (fpu < 1.0) {
                fpu = 1.0;
-               zoom_range_clock.set ((jack_nframes_t) floor (fpu * canvas_width));
+               zoom_range_clock.set ((nframes_t) floor (fpu * canvas_width));
        } else if (fpu > session->current_end_frame() / canvas_width) {
                fpu = session->current_end_frame() / canvas_width;
-               zoom_range_clock.set ((jack_nframes_t) floor (fpu * canvas_width));
+               zoom_range_clock.set ((nframes_t) floor (fpu * canvas_width));
        }
        
        temporal_zoom (fpu);
@@ -979,14 +925,14 @@ Editor::control_scroll (float fraction)
        }
 
        double step = fraction * current_page_frames();
-       jack_nframes_t target;
+       nframes_t target;
 
-       if ((fraction < 0.0f) && (session->transport_frame() < (jack_nframes_t) fabs(step))) {
+       if ((fraction < 0.0f) && (session->transport_frame() < (nframes_t) fabs(step))) {
                target = 0;
        } else if ((fraction > 0.0f) && (max_frames - session->transport_frame() < step)) {
                target = (max_frames - (current_page_frames()*2)); // allow room for slop in where the PH is on the screen
        } else {
-               target = (session->transport_frame() + (jack_nframes_t) floor ((fraction * current_page_frames())));
+               target = (session->transport_frame() + (nframes_t) floor ((fraction * current_page_frames())));
        }
 
        /* move visuals, we'll catch up with it later */
@@ -1010,7 +956,7 @@ Editor::control_scroll (float fraction)
 }
 
 bool
-Editor::deferred_control_scroll (jack_nframes_t target)
+Editor::deferred_control_scroll (nframes_t target)
 {
        session->request_locate (target);
        return false;
@@ -1019,40 +965,28 @@ Editor::deferred_control_scroll (jack_nframes_t target)
 void 
 Editor::canvas_horizontally_scrolled ()
 {
-       leftmost_frame = (jack_nframes_t) floor (horizontal_adjustment.get_value() * frames_per_unit);
 
+       leftmost_frame = (nframes_t) floor (horizontal_adjustment.get_value() * frames_per_unit);
        update_fixed_rulers ();
-       
-       if (!edit_hscroll_dragging) {
-               tempo_map_changed (Change (0));
-       } else {
-               update_tempo_based_rulers();
-       }
+       tempo_map_changed (Change (0));
+
 }
 
 void
-Editor::reposition_and_zoom (jack_nframes_t frame, double nfpu)
+Editor::reposition_and_zoom (nframes_t frame, double nfpu)
 {
        if (!repos_zoom_queued) {
-               Glib::signal_idle().connect (bind (mem_fun(*this, &Editor::deferred_reposition_and_zoom), frame, nfpu));
                repos_zoom_queued = true;
+               Glib::signal_idle().connect (bind (mem_fun(*this, &Editor::deferred_reposition_and_zoom), frame, nfpu));
        }
 }
 
 gint
-Editor::deferred_reposition_and_zoom (jack_nframes_t frame, double nfpu)
+Editor::deferred_reposition_and_zoom (nframes_t frame, double nfpu)
 {
-       /* if we need to force an update to the hscroller stuff,
-          don't set no_zoom_repos_update.
-       */
 
-       no_zoom_repos_update = (frame != leftmost_frame);
-       
        set_frames_per_unit (nfpu);
-       if (no_zoom_repos_update) {
-               reposition_x_origin  (frame);
-       }
-       no_zoom_repos_update = false;
+       reposition_x_origin  (frame);
        repos_zoom_queued = false;
        
        return FALSE;
@@ -1065,35 +999,6 @@ Editor::on_realize ()
        Realized ();
 }
 
-void
-Editor::queue_session_control_changed (Session::ControlType t)
-{
-       Gtkmm2ext::UI::instance()->call_slot (bind (mem_fun(*this, &Editor::session_control_changed), t));
-}
-
-void
-Editor::session_control_changed (Session::ControlType t)
-{
-       // right now we're only tracking some state here 
-
-       switch (t) {
-       case Session::AutoLoop:
-               update_loop_range_view (true);
-               break;
-       case Session::PunchIn:
-       case Session::PunchOut:
-               update_punch_range_view (true);
-               break;
-
-       case Session::LayeringModel:
-               update_layering_model ();
-               break;
-
-       default:
-               break;
-       }
-}
-
 void
 Editor::start_scrolling ()
 {
@@ -1105,11 +1010,10 @@ void
 Editor::stop_scrolling ()
 {
        scroll_connection.disconnect ();
-       slower_update_connection.disconnect ();
 }
 
 void
-Editor::map_position_change (jack_nframes_t frame)
+Editor::map_position_change (nframes_t frame)
 {
        ENSURE_GUI_THREAD (bind (mem_fun(*this, &Editor::map_position_change), frame));
 
@@ -1122,7 +1026,7 @@ Editor::map_position_change (jack_nframes_t frame)
 }      
 
 void
-Editor::center_screen (jack_nframes_t frame)
+Editor::center_screen (nframes_t frame)
 {
        double page = canvas_width * frames_per_unit;
 
@@ -1135,12 +1039,12 @@ Editor::center_screen (jack_nframes_t frame)
 }
 
 void
-Editor::center_screen_internal (jack_nframes_t frame, float page)
+Editor::center_screen_internal (nframes_t frame, float page)
 {
        page /= 2;
                
        if (frame > page) {
-               frame -= (jack_nframes_t) page;
+               frame -= (nframes_t) page;
        } else {
                frame = 0;
        }
@@ -1153,7 +1057,7 @@ Editor::handle_new_duration ()
 {
        ENSURE_GUI_THREAD (mem_fun (*this, &Editor::handle_new_duration));
 
-       jack_nframes_t new_end = session->get_maximum_extent() + (jack_nframes_t) floorf (current_page_frames() * 0.10f);
+       nframes_t new_end = session->get_maximum_extent() + (nframes_t) floorf (current_page_frames() * 0.10f);
                                  
        if (new_end > last_canvas_frame) {
                last_canvas_frame = new_end;
@@ -1211,7 +1115,7 @@ Editor::connect_to_session (Session *t)
 
        update_title ();
 
-       session->going_away.connect (mem_fun(*this, &Editor::session_going_away));
+       session->GoingAway.connect (mem_fun(*this, &Editor::session_going_away));
 
        /* 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,
@@ -1220,7 +1124,7 @@ Editor::connect_to_session (Session *t)
 
        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_p)));
+       session_connections.push_back (session->RouteAdded.connect (mem_fun(*this, &Editor::handle_new_route)));
        session_connections.push_back (session->AudioRegionAdded.connect (mem_fun(*this, &Editor::handle_new_audio_region)));
        session_connections.push_back (session->AudioRegionRemoved.connect (mem_fun(*this, &Editor::handle_audio_region_removed)));
        session_connections.push_back (session->DurationChanged.connect (mem_fun(*this, &Editor::handle_new_duration)));
@@ -1234,15 +1138,12 @@ Editor::connect_to_session (Session *t)
        session_connections.push_back (session->RegionHiddenChange.connect (mem_fun(*this, &Editor::region_hidden)));
 
        session_connections.push_back (session->SMPTEOffsetChanged.connect (mem_fun(*this, &Editor::update_just_smpte)));
-       session_connections.push_back (session->SMPTETypeChanged.connect (mem_fun(*this, &Editor::update_just_smpte)));
 
        session_connections.push_back (session->tempo_map().StateChanged.connect (mem_fun(*this, &Editor::tempo_map_changed)));
 
        edit_groups_changed ();
 
        edit_cursor_clock.set_session (session);
-       selection_start_clock.set_session (session);
-       selection_end_clock.set_session (session);
        zoom_range_clock.set_session (session);
        _playlist_selector->set_session (session);
        nudge_clock.set_session (session);
@@ -1252,16 +1153,6 @@ Editor::connect_to_session (Session *t)
                analysis_window->set_session (session);
 #endif
 
-       switch (session->get_edit_mode()) {
-       case Splice:
-               edit_mode_selector.set_active_text (edit_mode_strings[splice_index]);
-               break;
-
-       case Slide:
-               edit_mode_selector.set_active_text (edit_mode_strings[slide_index]);
-               break;
-       }
-
        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));
@@ -1290,10 +1181,8 @@ Editor::connect_to_session (Session *t)
                loc->set_name (_("Punch"));
        }
 
-       update_loop_range_view (true);
-       update_punch_range_view (true);
+       Config->map_parameters (mem_fun (*this, &Editor::parameter_changed));
        
-       session->ControlChanged.connect (mem_fun(*this, &Editor::queue_session_control_changed));
        session->StateSaved.connect (mem_fun(*this, &Editor::session_state_saved));
        
        refresh_location_display ();
@@ -1303,32 +1192,6 @@ Editor::connect_to_session (Session *t)
        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));
 
-       bool yn;
-       RefPtr<Action> act;
-
-       act = ActionManager::get_action (X_("Editor"), X_("toggle-xfades-active"));
-       if (act) {
-               RefPtr<ToggleAction> tact = RefPtr<ToggleAction>::cast_dynamic(act);
-               /* do it twice to force the change */
-               yn = session->get_crossfades_active();
-               tact->set_active (!yn);
-               tact->set_active (yn);
-       }
-
-       act = ActionManager::get_action (X_("Editor"), X_("toggle-auto-xfades"));
-       if (act) {
-               RefPtr<ToggleAction> tact = RefPtr<ToggleAction>::cast_dynamic(act);
-               /* do it twice to force the change */
-               yn = Config->get_auto_xfade ();
-               tact->set_active (!yn);
-               tact->set_active (yn);
-       }
-
-       /* xfade visibility state set from editor::set_state() */
-       
-       update_crossfade_model ();
-       update_layering_model ();
-
        handle_new_duration ();
 
        redisplay_regions ();
@@ -1351,7 +1214,8 @@ Editor::connect_to_session (Session *t)
        horizontal_adjustment.set_value (0);
 
        restore_ruler_visibility ();
-       tempo_map_changed (Change (0));
+       //tempo_map_changed (Change (0));
+       session->tempo_map().apply_with_metrics (*this, &Editor::draw_metric_marks);
 
        edit_cursor->set_position (0);
        playhead_cursor->set_position (0);
@@ -1375,7 +1239,7 @@ Editor::connect_to_session (Session *t)
                        AudioTimeAxisView *atv;
                        
                        if ((atv = dynamic_cast<AudioTimeAxisView*>(tv)) != 0) {
-                               if (atv->route().master()) {
+                               if (atv->route()->master()) {
                                        route_list_display.get_selection()->unselect (i);
                                }
                        }
@@ -1384,6 +1248,10 @@ Editor::connect_to_session (Session *t)
                no_route_list_redisplay = false;
                redisplay_route_list ();
        }
+
+        /* register for undo history */
+
+        session->register_with_memento_command_factory(_id, this);
 }
 
 void
@@ -1440,13 +1308,14 @@ Editor::popup_fade_context_menu (int button, int32_t time, ArdourCanvas::Item* i
        }
 
        MenuList& items (fade_context_menu.items());
+       AudioRegion& ar (*arv->audio_region().get()); // FIXME
 
        items.clear ();
 
        switch (item_type) {
        case FadeInItem:
        case FadeInHandleItem:
-               if (arv->region.fade_in_active()) {
+               if (arv->audio_region()->fade_in_active()) {
                        items.push_back (MenuElem (_("Deactivate"), bind (mem_fun (*arv, &AudioRegionView::set_fade_in_active), false)));
                } else {
                        items.push_back (MenuElem (_("Activate"), bind (mem_fun (*arv, &AudioRegionView::set_fade_in_active), true)));
@@ -1454,16 +1323,16 @@ Editor::popup_fade_context_menu (int button, int32_t time, ArdourCanvas::Item* i
                
                items.push_back (SeparatorElem());
                
-               items.push_back (MenuElem (_("Linear"), bind (mem_fun (arv->region, &AudioRegion::set_fade_in_shape), AudioRegion::Linear)));
-               items.push_back (MenuElem (_("Slowest"), bind (mem_fun (arv->region, &AudioRegion::set_fade_in_shape), AudioRegion::LogB)));
-               items.push_back (MenuElem (_("Slow"), bind (mem_fun (arv->region, &AudioRegion::set_fade_in_shape), AudioRegion::Fast)));
-               items.push_back (MenuElem (_("Fast"), bind (mem_fun (arv->region, &AudioRegion::set_fade_in_shape), AudioRegion::LogA)));
-               items.push_back (MenuElem (_("Fastest"), bind (mem_fun (arv->region, &AudioRegion::set_fade_in_shape), AudioRegion::Slow)));
+               items.push_back (MenuElem (_("Linear"), bind (mem_fun (ar, &AudioRegion::set_fade_in_shape), AudioRegion::Linear)));
+               items.push_back (MenuElem (_("Slowest"), bind (mem_fun (ar, &AudioRegion::set_fade_in_shape), AudioRegion::LogB)));
+               items.push_back (MenuElem (_("Slow"), bind (mem_fun (ar, &AudioRegion::set_fade_in_shape), AudioRegion::Fast)));
+               items.push_back (MenuElem (_("Fast"), bind (mem_fun (ar, &AudioRegion::set_fade_in_shape), AudioRegion::LogA)));
+               items.push_back (MenuElem (_("Fastest"), bind (mem_fun (ar, &AudioRegion::set_fade_in_shape), AudioRegion::Slow)));
                break;
 
        case FadeOutItem:
        case FadeOutHandleItem:
-               if (arv->region.fade_out_active()) {
+               if (arv->audio_region()->fade_out_active()) {
                        items.push_back (MenuElem (_("Deactivate"), bind (mem_fun (*arv, &AudioRegionView::set_fade_out_active), false)));
                } else {
                        items.push_back (MenuElem (_("Activate"), bind (mem_fun (*arv, &AudioRegionView::set_fade_out_active), true)));
@@ -1471,11 +1340,11 @@ Editor::popup_fade_context_menu (int button, int32_t time, ArdourCanvas::Item* i
                
                items.push_back (SeparatorElem());
                
-               items.push_back (MenuElem (_("Linear"), bind (mem_fun (arv->region, &AudioRegion::set_fade_out_shape), AudioRegion::Linear)));
-               items.push_back (MenuElem (_("Slowest"), bind (mem_fun (arv->region, &AudioRegion::set_fade_out_shape), AudioRegion::Fast)));
-               items.push_back (MenuElem (_("Slow"), bind (mem_fun (arv->region, &AudioRegion::set_fade_out_shape), AudioRegion::LogB)));
-               items.push_back (MenuElem (_("Fast"), bind (mem_fun (arv->region, &AudioRegion::set_fade_out_shape), AudioRegion::LogA)));
-               items.push_back (MenuElem (_("Fastest"), bind (mem_fun (arv->region, &AudioRegion::set_fade_out_shape), AudioRegion::Slow)));
+               items.push_back (MenuElem (_("Linear"), bind (mem_fun (ar, &AudioRegion::set_fade_out_shape), AudioRegion::Linear)));
+               items.push_back (MenuElem (_("Slowest"), bind (mem_fun (ar, &AudioRegion::set_fade_out_shape), AudioRegion::Fast)));
+               items.push_back (MenuElem (_("Slow"), bind (mem_fun (ar, &AudioRegion::set_fade_out_shape), AudioRegion::LogB)));
+               items.push_back (MenuElem (_("Fast"), bind (mem_fun (ar, &AudioRegion::set_fade_out_shape), AudioRegion::LogA)));
+               items.push_back (MenuElem (_("Fastest"), bind (mem_fun (ar, &AudioRegion::set_fade_out_shape), AudioRegion::Slow)));
 
                break;
        default:
@@ -1489,16 +1358,16 @@ Editor::popup_fade_context_menu (int button, int32_t time, ArdourCanvas::Item* i
 }
 
 void
-Editor::popup_track_context_menu (int button, int32_t time, ItemType item_type, bool with_selection, jack_nframes_t frame)
+Editor::popup_track_context_menu (int button, int32_t time, ItemType item_type, bool with_selection, nframes_t frame)
 {
        using namespace Menu_Helpers;
-       Menu* (Editor::*build_menu_function)(jack_nframes_t);
+       Menu* (Editor::*build_menu_function)(nframes_t);
        Menu *menu;
 
        switch (item_type) {
        case RegionItem:
-       case AudioRegionViewName:
-       case AudioRegionViewNameHighlight:
+       case RegionViewName:
+       case RegionViewNameHighlight:
                if (with_selection) {
                        build_menu_function = &Editor::build_track_selection_context_menu;
                } else {
@@ -1538,25 +1407,26 @@ Editor::popup_track_context_menu (int button, int32_t time, ItemType item_type,
 
        switch (item_type) {
        case RegionItem:
-       case AudioRegionViewName:
-       case AudioRegionViewNameHighlight:
+       case RegionViewName:
+       case RegionViewNameHighlight:
                if (!with_selection) {
                        if (region_edit_menu_split_item) {
-                               if (clicked_regionview && clicked_regionview->region.covers (edit_cursor->current_frame)) {
+                               if (clicked_regionview && clicked_regionview->region()->covers (edit_cursor->current_frame)) {
                                        ActionManager::set_sensitive (ActionManager::edit_cursor_in_region_sensitive_actions, true);
                                } else {
                                        ActionManager::set_sensitive (ActionManager::edit_cursor_in_region_sensitive_actions, false);
                                }
                        }
+                       /*
                        if (region_edit_menu_split_multichannel_item) {
-                               if (clicked_regionview && clicked_regionview->region.n_channels() > 1) {
+                               if (clicked_regionview && clicked_regionview->region().n_channels() > 1) {
                                        // GTK2FIX find the action, change its sensitivity
                                        // region_edit_menu_split_multichannel_item->set_sensitive (true);
                                } else {
                                        // GTK2FIX see above
                                        // region_edit_menu_split_multichannel_item->set_sensitive (false);
                                }
-                       }
+                       }*/
                }
                break;
 
@@ -1603,7 +1473,7 @@ Editor::popup_track_context_menu (int button, int32_t time, ItemType item_type,
 }
 
 Menu*
-Editor::build_track_context_menu (jack_nframes_t ignored)
+Editor::build_track_context_menu (nframes_t ignored)
 {
        using namespace Menu_Helpers;
 
@@ -1615,7 +1485,7 @@ Editor::build_track_context_menu (jack_nframes_t ignored)
 }
 
 Menu*
-Editor::build_track_bus_context_menu (jack_nframes_t ignored)
+Editor::build_track_bus_context_menu (nframes_t ignored)
 {
        using namespace Menu_Helpers;
 
@@ -1627,7 +1497,7 @@ Editor::build_track_bus_context_menu (jack_nframes_t ignored)
 }
 
 Menu*
-Editor::build_track_region_context_menu (jack_nframes_t frame)
+Editor::build_track_region_context_menu (nframes_t frame)
 {
        using namespace Menu_Helpers;
        MenuList& edit_items  = track_region_context_menu.items();
@@ -1636,13 +1506,13 @@ Editor::build_track_region_context_menu (jack_nframes_t frame)
        AudioTimeAxisView* atv = dynamic_cast<AudioTimeAxisView*> (clicked_trackview);
 
        if (atv) {
-               AudioDiskstream* ds;
+               boost::shared_ptr<Diskstream> ds;
                Playlist* pl;
                
                if ((ds = atv->get_diskstream()) && ((pl = ds->playlist()))) {
-                       Playlist::RegionList* regions = pl->regions_at ((jack_nframes_t) floor ( (double)frame * ds->speed()));
+                       Playlist::RegionList* regions = pl->regions_at ((nframes_t) floor ( (double)frame * ds->speed()));
                        for (Playlist::RegionList::iterator i = regions->begin(); i != regions->end(); ++i) {
-                               add_region_context_items (atv->view, (*i), edit_items);
+                               add_region_context_items (atv->audio_view(), (*i), edit_items);
                        }
                        delete regions;
                }
@@ -1654,7 +1524,7 @@ Editor::build_track_region_context_menu (jack_nframes_t frame)
 }
 
 Menu*
-Editor::build_track_crossfade_context_menu (jack_nframes_t frame)
+Editor::build_track_crossfade_context_menu (nframes_t frame)
 {
        using namespace Menu_Helpers;
        MenuList& edit_items  = track_crossfade_context_menu.items();
@@ -1663,7 +1533,7 @@ Editor::build_track_crossfade_context_menu (jack_nframes_t frame)
        AudioTimeAxisView* atv = dynamic_cast<AudioTimeAxisView*> (clicked_trackview);
 
        if (atv) {
-               AudioDiskstream* ds;
+               boost::shared_ptr<Diskstream> ds;
                Playlist* pl;
                AudioPlaylist* apl;
 
@@ -1677,11 +1547,11 @@ Editor::build_track_crossfade_context_menu (jack_nframes_t frame)
                        bool many = xfades.size() > 1;
 
                        for (AudioPlaylist::Crossfades::iterator i = xfades.begin(); i != xfades.end(); ++i) {
-                               add_crossfade_context_items (atv->view, (*i), edit_items, many);
+                               add_crossfade_context_items (atv->audio_view(), (*i), edit_items, many);
                        }
 
                        for (Playlist::RegionList::iterator i = regions->begin(); i != regions->end(); ++i) {
-                               add_region_context_items (atv->view, (*i), edit_items);
+                               add_region_context_items (atv->audio_view(), (*i), edit_items);
                        }
 
                        delete regions;
@@ -1734,7 +1604,7 @@ Editor::analyze_range_selection()
 
 
 Menu*
-Editor::build_track_selection_context_menu (jack_nframes_t ignored)
+Editor::build_track_selection_context_menu (nframes_t ignored)
 {
        using namespace Menu_Helpers;
        MenuList& edit_items  = track_selection_context_menu.items();
@@ -1747,7 +1617,7 @@ Editor::build_track_selection_context_menu (jack_nframes_t ignored)
 }
 
 void
-Editor::add_crossfade_context_items (StreamView* view, Crossfade* xfade, Menu_Helpers::MenuList& edit_items, bool many)
+Editor::add_crossfade_context_items (AudioStreamView* view, Crossfade* xfade, Menu_Helpers::MenuList& edit_items, bool many)
 {
        using namespace Menu_Helpers;
        Menu     *xfade_menu = manage (new Menu);
@@ -1776,9 +1646,9 @@ Editor::add_crossfade_context_items (StreamView* view, Crossfade* xfade, Menu_He
        }
 
        if (many) {
-               str = xfade->out().name();
+               str = xfade->out()->name();
                str += "->";
-               str += xfade->in().name();
+               str += xfade->in()->name();
        } else {
                str = _("Crossfade");
        }
@@ -1804,17 +1674,17 @@ Editor::xfade_edit_right_region ()
 }
 
 void
-Editor::add_region_context_items (StreamView* sv, Region* region, Menu_Helpers::MenuList& edit_items)
+Editor::add_region_context_items (AudioStreamView* sv, boost::shared_ptr<Region> region, Menu_Helpers::MenuList& edit_items)
 {
        using namespace Menu_Helpers;
        Menu     *region_menu = manage (new Menu);
        MenuList& items       = region_menu->items();
        region_menu->set_name ("ArdourContextMenu");
        
-       AudioRegion* ar = 0;
+       boost::shared_ptr<AudioRegion> ar;
 
        if (region) {
-               ar = dynamic_cast<AudioRegion*> (region);
+               ar = boost::dynamic_pointer_cast<AudioRegion> (region);
        }
 
        /* when this particular menu pops up, make the relevant region 
@@ -2163,6 +2033,9 @@ Editor::set_state (const XMLNode& node)
        int x, y, xoff, yoff;
        Gdk::Geometry g;
 
+       if ((prop = node.property ("id")) != 0) {
+               _id = prop->value ();
+       }
 
        if ((geometry = find_named_node (node, "geometry")) == 0) {
 
@@ -2183,7 +2056,6 @@ Editor::set_state (const XMLNode& node)
                yoff = atoi(geometry->property("y_off")->value());
        }
 
-       set_geometry_hints (vpacker, g, Gdk::HINT_BASE_SIZE);
        set_default_size (g.base_width, g.base_height);
        move (x, y);
 
@@ -2285,6 +2157,7 @@ Editor::set_state (const XMLNode& node)
                }
        }
 
+
        return 0;
 }
 
@@ -2294,8 +2167,11 @@ Editor::get_state ()
        XMLNode* node = new XMLNode ("Editor");
        char buf[32];
 
+       _id.print (buf, sizeof (buf));
+       node->add_property ("id", buf);
+       
        if (is_realized()) {
-               Glib::RefPtr<Gdk::Window> win = get_window();
+               Glib::RefPtr<Gdk::Window> win = get_window();
                
                int x, y, xoff, yoff, width, height;
                win->get_root_origin(x, y);
@@ -2303,7 +2179,7 @@ Editor::get_state ()
                win->get_size(width, height);
                
                XMLNode* geometry = new XMLNode ("geometry");
-               char buf[32];
+
                snprintf(buf, sizeof(buf), "%d", width);
                geometry->add_property("x_size", string(buf));
                snprintf(buf, sizeof(buf), "%d", height);
@@ -2373,7 +2249,7 @@ Editor::trackview_by_y_position (double y)
 }
 
 void
-Editor::snap_to (jack_nframes_t& start, int32_t direction, bool for_mark)
+Editor::snap_to (nframes_t& start, int32_t direction, bool for_mark)
 {
        Location* before = 0;
        Location* after = 0;
@@ -2382,10 +2258,10 @@ Editor::snap_to (jack_nframes_t& start, int32_t direction, bool for_mark)
                return;
        }
 
-       const jack_nframes_t one_second = session->frame_rate();
-       const jack_nframes_t one_minute = session->frame_rate() * 60;
+       const nframes_t one_second = session->frame_rate();
+       const nframes_t one_minute = session->frame_rate() * 60;
 
-       jack_nframes_t presnap = start;
+       nframes_t presnap = start;
 
        switch (snap_type) {
        case SnapToFrame:
@@ -2393,16 +2269,16 @@ Editor::snap_to (jack_nframes_t& start, int32_t direction, bool for_mark)
 
        case SnapToCDFrame:
                if (direction) {
-                       start = (jack_nframes_t) ceil ((double) start / (one_second / 75)) * (one_second / 75);
+                       start = (nframes_t) ceil ((double) start / (one_second / 75)) * (one_second / 75);
                } else {
-                       start = (jack_nframes_t) floor ((double) start / (one_second / 75)) * (one_second / 75);
+                       start = (nframes_t) floor ((double) start / (one_second / 75)) * (one_second / 75);
                }
                break;
        case SnapToSMPTEFrame:
                if (direction) {
-                       start = (jack_nframes_t) (ceil ((double) start / session->frames_per_smpte_frame()) * session->frames_per_smpte_frame());
+                       start = (nframes_t) (ceil ((double) start / session->frames_per_smpte_frame()) * session->frames_per_smpte_frame());
                } else {
-                       start = (jack_nframes_t) (floor ((double) start / session->frames_per_smpte_frame()) *  session->frames_per_smpte_frame());
+                       start = (nframes_t) (floor ((double) start / session->frames_per_smpte_frame()) *  session->frames_per_smpte_frame());
                }
                break;
 
@@ -2414,9 +2290,9 @@ Editor::snap_to (jack_nframes_t& start, int32_t direction, bool for_mark)
                        start -= session->smpte_offset ();
                }    
                if (direction > 0) {
-                       start = (jack_nframes_t) ceil ((double) start / one_second) * one_second;
+                       start = (nframes_t) ceil ((double) start / one_second) * one_second;
                } else {
-                       start = (jack_nframes_t) floor ((double) start / one_second) * one_second;
+                       start = (nframes_t) floor ((double) start / one_second) * one_second;
                }
                
                if (session->smpte_offset_negative())
@@ -2435,9 +2311,9 @@ Editor::snap_to (jack_nframes_t& start, int32_t direction, bool for_mark)
                        start -= session->smpte_offset ();
                }
                if (direction) {
-                       start = (jack_nframes_t) ceil ((double) start / one_minute) * one_minute;
+                       start = (nframes_t) ceil ((double) start / one_minute) * one_minute;
                } else {
-                       start = (jack_nframes_t) floor ((double) start / one_minute) * one_minute;
+                       start = (nframes_t) floor ((double) start / one_minute) * one_minute;
                }
                if (session->smpte_offset_negative())
                {
@@ -2449,17 +2325,17 @@ Editor::snap_to (jack_nframes_t& start, int32_t direction, bool for_mark)
                
        case SnapToSeconds:
                if (direction) {
-                       start = (jack_nframes_t) ceil ((double) start / one_second) * one_second;
+                       start = (nframes_t) ceil ((double) start / one_second) * one_second;
                } else {
-                       start = (jack_nframes_t) floor ((double) start / one_second) * one_second;
+                       start = (nframes_t) floor ((double) start / one_second) * one_second;
                }
                break;
                
        case SnapToMinutes:
                if (direction) {
-                       start = (jack_nframes_t) ceil ((double) start / one_minute) * one_minute;
+                       start = (nframes_t) ceil ((double) start / one_minute) * one_minute;
                } else {
-                       start = (jack_nframes_t) floor ((double) start / one_minute) * one_minute;
+                       start = (nframes_t) floor ((double) start / one_minute) * one_minute;
                }
                break;
 
@@ -2540,7 +2416,7 @@ Editor::snap_to (jack_nframes_t& start, int32_t direction, bool for_mark)
        case SnapToRegionSync:
        case SnapToRegionBoundary:
                if (!region_boundary_cache.empty()) {
-                       vector<jack_nframes_t>::iterator i;
+                       vector<nframes_t>::iterator i;
 
                        if (direction > 0) {
                                i = std::upper_bound (region_boundary_cache.begin(), region_boundary_cache.end(), start);
@@ -2584,30 +2460,60 @@ void
 Editor::setup_toolbar ()
 {
        string pixmap_path;
+
+       const guint32 FUDGE = 18; // Combo's are stupid - they steal space from the entry for the button
+
+
+       /* Mode Buttons (tool selection) */
+
        vector<ToggleButton *> mouse_mode_buttons;
 
+       mouse_move_button.add (*(manage (new Image (get_xpm("tool_object.xpm")))));
+       mouse_move_button.set_relief(Gtk::RELIEF_NONE);
        mouse_mode_buttons.push_back (&mouse_move_button);
+       mouse_select_button.add (*(manage (new Image (get_xpm("tool_range.xpm")))));
+       mouse_select_button.set_relief(Gtk::RELIEF_NONE);
        mouse_mode_buttons.push_back (&mouse_select_button);
+       mouse_gain_button.add (*(manage (new Image (get_xpm("tool_gain.xpm")))));
+       mouse_gain_button.set_relief(Gtk::RELIEF_NONE);
        mouse_mode_buttons.push_back (&mouse_gain_button);
+       mouse_zoom_button.add (*(manage (new Image (get_xpm("tool_zoom.xpm")))));
+       mouse_zoom_button.set_relief(Gtk::RELIEF_NONE);
        mouse_mode_buttons.push_back (&mouse_zoom_button);
+       mouse_timefx_button.add (*(manage (new Image (get_xpm("tool_stretch.xpm")))));
+       mouse_timefx_button.set_relief(Gtk::RELIEF_NONE);
        mouse_mode_buttons.push_back (&mouse_timefx_button);
+       mouse_audition_button.add (*(manage (new Image (get_xpm("tool_audition.xpm")))));
+       mouse_audition_button.set_relief(Gtk::RELIEF_NONE);
        mouse_mode_buttons.push_back (&mouse_audition_button);
+       
        mouse_mode_button_set = new GroupedButtons (mouse_mode_buttons);
 
-       mouse_mode_button_table.set_homogeneous (true);
-       mouse_mode_button_table.set_col_spacings (2);
-       mouse_mode_button_table.set_row_spacings (2);
-       mouse_mode_button_table.set_border_width (5);
+       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);
+       mouse_mode_button_box.pack_start(mouse_select_button, true, true);
+       mouse_mode_button_box.pack_start(mouse_zoom_button, true, true);
+       mouse_mode_button_box.pack_start(mouse_gain_button, true, true);
+       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.set_homogeneous(true);
+
+       vector<string> edit_mode_strings;
+       edit_mode_strings.push_back (edit_mode_to_string (Splice));
+       edit_mode_strings.push_back (edit_mode_to_string (Slide));
 
-       mouse_mode_button_table.attach (mouse_move_button, 0, 1, 0, 1);
-       mouse_mode_button_table.attach (mouse_select_button, 1, 2, 0, 1);
-       mouse_mode_button_table.attach (mouse_zoom_button, 2, 3, 0, 1);
-       mouse_mode_button_table.attach (mouse_gain_button, 0, 1, 1, 2);
-       mouse_mode_button_table.attach (mouse_timefx_button, 1, 2, 1, 2);
-       mouse_mode_button_table.attach (mouse_audition_button, 2, 3, 1, 2);
+       edit_mode_selector.set_name ("EditModeSelector");
+       Gtkmm2ext::set_size_request_to_display_given_text (edit_mode_selector, longest (edit_mode_strings).c_str(), 2+FUDGE, 10);
+       set_popdown_strings (edit_mode_selector, edit_mode_strings);
+       edit_mode_selector.signal_changed().connect (mem_fun(*this, &Editor::edit_mode_selection_done));
 
-       mouse_mode_tearoff = manage (new TearOff (mouse_mode_button_table));
+       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->Detach.connect (bind (mem_fun(*this, &Editor::detach_tearoff), static_cast<Box*>(&toolbar_hbox), 
@@ -2626,12 +2532,12 @@ Editor::setup_toolbar ()
        mouse_timefx_button.set_name ("MouseModeButton");
        mouse_audition_button.set_name ("MouseModeButton");
 
-       ARDOUR_UI::instance()->tooltips().set_tip (mouse_move_button, _("select/move objects"));
-       ARDOUR_UI::instance()->tooltips().set_tip (mouse_select_button, _("select/move ranges"));
-       ARDOUR_UI::instance()->tooltips().set_tip (mouse_gain_button, _("draw gain automation"));
-       ARDOUR_UI::instance()->tooltips().set_tip (mouse_zoom_button, _("select zoom range"));
-       ARDOUR_UI::instance()->tooltips().set_tip (mouse_timefx_button, _("stretch/shrink regions"));
-       ARDOUR_UI::instance()->tooltips().set_tip (mouse_audition_button, _("listen to specific regions"));
+       ARDOUR_UI::instance()->tooltips().set_tip (mouse_move_button, _("Select/Move Objects"));
+       ARDOUR_UI::instance()->tooltips().set_tip (mouse_select_button, _("Select/Move Ranges"));
+       ARDOUR_UI::instance()->tooltips().set_tip (mouse_gain_button, _("Draw Gain Automation"));
+       ARDOUR_UI::instance()->tooltips().set_tip (mouse_zoom_button, _("Select Zoom Range"));
+       ARDOUR_UI::instance()->tooltips().set_tip (mouse_timefx_button, _("Stretch/Shrink Regions"));
+       ARDOUR_UI::instance()->tooltips().set_tip (mouse_audition_button, _("Listen to Specific Regions"));
 
        mouse_move_button.unset_flags (CAN_FOCUS);
        mouse_select_button.unset_flags (CAN_FOCUS);
@@ -2650,160 +2556,82 @@ Editor::setup_toolbar ()
        mouse_audition_button.signal_toggled().connect (bind (mem_fun(*this, &Editor::mouse_mode_toggled), Editing::MouseAudition));
 
        // mouse_move_button.set_active (true);
+       
 
-       /* automation control */
-
-       global_automation_button.set_name ("MouseModeButton");
-       automation_mode_button.set_name ("MouseModeButton");
-
-       automation_box.set_spacing (2);
-       automation_box.set_border_width (2);
-       automation_box.pack_start (global_automation_button, false, false);
-       automation_box.pack_start (automation_mode_button, false, false);
-
-       /* Edit mode */
-
-       edit_mode_label.set_name ("ToolBarLabel");
-
-       edit_mode_selector.set_name ("EditModeSelector");
+       /* Zoom */
+       
+       zoom_box.set_spacing (1);
+       zoom_box.set_border_width (2);
 
-       edit_mode_box.set_spacing (3);
-       edit_mode_box.set_border_width (3);
+       zoom_in_button.set_name ("EditorTimeButton");
+       zoom_in_button.add (*(manage (new Image (get_xpm("zoom_in.xpm")))));
+       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_out_button.set_name ("EditorTimeButton");
+       zoom_out_button.add (*(manage (new Image (get_xpm("zoom_out.xpm")))));
+       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"));
 
-       /* XXX another disgusting hack because of the way combo boxes size themselves */
+       zoom_out_full_button.set_name ("EditorTimeButton");
+       zoom_out_full_button.add (*(manage (new Image (get_xpm("zoom_full.xpm")))));
+       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_box.pack_start (zoom_out_button, false, false);
+       zoom_box.pack_start (zoom_in_button, false, false);
+       zoom_box.pack_start (zoom_range_clock, false, false);   
+       zoom_box.pack_start (zoom_out_full_button, false, false);
+       
+       ARDOUR_UI::instance()->tooltips().set_tip (zoom_range_clock, _("Current Zoom Range\n(Width of visible area)"));
+       
+       zoom_focus_selector.set_name ("ZoomFocusSelector");
+       Gtkmm2ext::set_size_request_to_display_given_text (zoom_focus_selector, "Focus Center", 2+FUDGE, 0);
+       set_popdown_strings (zoom_focus_selector, internationalize (zoom_focus_strings));
+       zoom_focus_selector.signal_changed().connect (mem_fun(*this, &Editor::zoom_focus_selection_done));
 
-       const guint32 FUDGE = 20; // Combo's are stupid - they steal space from the entry for the button
-       Gtkmm2ext::set_size_request_to_display_given_text (edit_mode_selector, "EdgtMode", 2+FUDGE, 10);
-       set_popdown_strings (edit_mode_selector, internationalize (edit_mode_strings));
-       edit_mode_box.pack_start (edit_mode_label, false, false);
-       edit_mode_box.pack_start (edit_mode_selector, false, false);
+       zoom_box.pack_start (zoom_focus_selector, false, false);
 
-       edit_mode_selector.signal_changed().connect (mem_fun(*this, &Editor::edit_mode_selection_done));
 
-       /* Snap Type */
+       /* Edit Cursor / Snap */
 
-       snap_type_label.set_name ("ToolBarLabel");
+       snap_box.set_spacing (1);
+       snap_box.set_border_width (2);
 
        snap_type_selector.set_name ("SnapTypeSelector");
-
-       snap_type_box.set_spacing (3);
-       snap_type_box.set_border_width (3);
-
-       /* XXX another disgusting hack because of the way combo boxes size themselves */
-
        Gtkmm2ext::set_size_request_to_display_given_text (snap_type_selector, "SMPTE Seconds", 2+FUDGE, 10);
        set_popdown_strings (snap_type_selector, internationalize (snap_type_strings));
-
-       snap_type_box.pack_start (snap_type_label, false, false);
-       snap_type_box.pack_start (snap_type_selector, false, false);
-
        snap_type_selector.signal_changed().connect (mem_fun(*this, &Editor::snap_type_selection_done));
-
-       /* Snap mode, not snap type */
-
-       snap_mode_label.set_name ("ToolBarLabel");
+       ARDOUR_UI::instance()->tooltips().set_tip (snap_type_selector, _("Unit to snap cursors and ranges to"));
 
        snap_mode_selector.set_name ("SnapModeSelector");
-       
-       snap_mode_box.set_spacing (3);
-       snap_mode_box.set_border_width (3);
-
-       Gtkmm2ext::set_size_request_to_display_given_text (snap_mode_selector, "SngpMode", 2+FUDGE, 10);
+       Gtkmm2ext::set_size_request_to_display_given_text (snap_mode_selector, "Magnetic Snap", 2+FUDGE, 10);
        set_popdown_strings (snap_mode_selector, internationalize (snap_mode_strings));
-
-       snap_mode_box.pack_start (snap_mode_label, false, false);
-       snap_mode_box.pack_start (snap_mode_selector, false, false);
-
        snap_mode_selector.signal_changed().connect (mem_fun(*this, &Editor::snap_mode_selection_done));
 
-       /* Zoom focus mode */
-
-       zoom_focus_label.set_name ("ToolBarLabel");
-
-       zoom_focus_selector.set_name ("ZoomFocusSelector");
-
-       zoom_focus_box.set_spacing (3);
-       zoom_focus_box.set_border_width (3);
-
-       /* XXX another disgusting hack because of the way combo boxes size themselves */
-
-       Gtkmm2ext::set_size_request_to_display_given_text (zoom_focus_selector, "Edgt Cursor", 2+FUDGE, 10);
-       set_popdown_strings (zoom_focus_selector, internationalize (zoom_focus_strings));
-
-       zoom_focus_box.pack_start (zoom_focus_label, false, false);
-       zoom_focus_box.pack_start (zoom_focus_selector, false, false);
-
-       zoom_focus_selector.signal_changed().connect (mem_fun(*this, &Editor::zoom_focus_selection_done));
-
-       /* selection/cursor clocks */
-
-       toolbar_selection_cursor_label.set_name ("ToolBarLabel");
-       selection_start_clock_label.set_name ("ToolBarLabel");
-       selection_end_clock_label.set_name ("ToolBarLabel");
-       edit_cursor_clock_label.set_name ("ToolBarLabel");
-
-       selection_start_clock_label.set_text (_("Start:"));
-       selection_end_clock_label.set_text (_("End:"));
-       edit_cursor_clock_label.set_text (_("Edit"));
-
-       /* the zoom in/out buttons are generally taller than the clocks, so
-          put all the toolbar clocks into a size group with one of the 
-          buttons to make them all equal height.
-
-          this also applies to the various toolbar combos
-       */
-
-       RefPtr<SizeGroup> toolbar_clock_size_group = SizeGroup::create (SIZE_GROUP_VERTICAL);
-       toolbar_clock_size_group->add_widget (zoom_out_button);
-       toolbar_clock_size_group->add_widget (edit_cursor_clock);
-       toolbar_clock_size_group->add_widget (zoom_range_clock);
-       toolbar_clock_size_group->add_widget (nudge_clock);
-       toolbar_clock_size_group->add_widget (edit_mode_selector);
-       toolbar_clock_size_group->add_widget (snap_type_selector);
-       toolbar_clock_size_group->add_widget (snap_mode_selector);
-       toolbar_clock_size_group->add_widget (zoom_focus_selector);
-
-       HBox* edit_clock_hbox = manage (new HBox());
-       VBox* edit_clock_vbox = manage (new VBox());
-
-       edit_clock_hbox->pack_start (edit_cursor_clock, false, false);
-
-       edit_clock_vbox->set_spacing (3);
-       edit_clock_vbox->set_border_width (3);
-       edit_clock_vbox->pack_start (edit_cursor_clock_label, false, false);
-       edit_clock_vbox->pack_start (*edit_clock_hbox, false, false);
-
-       HBox* hbox = new HBox;
+       snap_box.pack_start (edit_cursor_clock, false, false);
+       snap_box.pack_start (snap_mode_selector, false, false);
+       snap_box.pack_start (snap_type_selector, false, false);
 
-       hbox->pack_start (*edit_clock_vbox, false, false);
-       hbox->pack_start (zoom_indicator_vbox, false, false); 
-       hbox->pack_start (zoom_focus_box, false, false);
-       hbox->pack_start (snap_type_box, false, false);
-       hbox->pack_start (snap_mode_box, false, false);
-       hbox->pack_start (edit_mode_box, false, false);
 
-       VBox *vbox = manage (new VBox);
+       /* Nudge */
 
-       vbox->set_spacing (3);
-       vbox->set_border_width (3);
+       HBox *nudge_box = manage (new HBox);
+       nudge_box->set_spacing(1);
+       nudge_box->set_border_width (2);
 
-       HBox *nbox = manage (new HBox);
-       
        nudge_forward_button.signal_clicked().connect (bind (mem_fun(*this, &Editor::nudge_forward), false));
        nudge_backward_button.signal_clicked().connect (bind (mem_fun(*this, &Editor::nudge_backward), false));
 
-       nbox->pack_start (nudge_backward_button, false, false);
-       nbox->pack_start (nudge_forward_button, false, false);
-       nbox->pack_start (nudge_clock, false, false, 5);
-
-       nudge_label.set_name ("ToolBarLabel");
+       nudge_box->pack_start (nudge_backward_button, false, false);
+       nudge_box->pack_start (nudge_forward_button, false, false);
+       nudge_box->pack_start (nudge_clock, false, false);
 
-       vbox->pack_start (nudge_label, false, false);
-       vbox->pack_start (*nbox, false, false);
 
-       hbox->pack_start (*vbox, false, false);
+       /* Pack everything in... */
 
-       hbox->show_all ();
+       HBox* hbox = new HBox;
+       hbox->set_spacing(10);
 
        tools_tearoff = new TearOff (*hbox);
        tools_tearoff->set_name ("MouseModeBase");
@@ -2817,11 +2645,18 @@ Editor::setup_toolbar ()
        tools_tearoff->Visible.connect (bind (mem_fun(*this, &Editor::reattach_tearoff), static_cast<Box*> (&toolbar_hbox), 
                                              &tools_tearoff->tearoff_window(), 0));
 
-       toolbar_hbox.set_spacing (8);
-       toolbar_hbox.set_border_width (2);
+       toolbar_hbox.set_spacing (10);
+       toolbar_hbox.set_border_width (1);
 
-       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 (zoom_box, false, false); 
+       hbox->pack_start (*nudge_box, false, false);
+
+       hbox->show_all ();
        
        toolbar_base.set_name ("ToolBarBase");
        toolbar_base.add (toolbar_hbox);
@@ -2969,8 +2804,8 @@ void
 Editor::begin_reversible_command (string name)
 {
        if (session) {
-               UndoAction ua = get_memento();
-               session->begin_reversible_command (name, &ua);
+                before = &get_state();
+               session->begin_reversible_command (name);
        }
 }
 
@@ -2978,8 +2813,7 @@ void
 Editor::commit_reversible_command ()
 {
        if (session) {
-               UndoAction ua = get_memento();
-               session->commit_reversible_command (&ua);
+               session->commit_reversible_command (new MementoCommand<Editor>(*this, before, &get_state()));
        }
 }
 
@@ -3031,7 +2865,7 @@ Editor::set_selected_control_point_from_click (bool press, Selection::Operation
        /* select this point and any others that it represents */
 
        double y1, y2;
-       jack_nframes_t x1, x2;
+       nframes_t x1, x2;
 
        x1 = pixel_to_frame (clicked_control_point->get_x() - 10);
        x2 = pixel_to_frame (clicked_control_point->get_x() + 10);
@@ -3054,7 +2888,7 @@ Editor::get_relevant_audio_tracks (AudioTimeAxisView& base, set<AudioTimeAxisVie
                        continue;
                }
 
-               RouteGroup* group = atv->route().edit_group();
+               RouteGroup* group = atv->route()->edit_group();
 
                if (group && group->is_active()) {
                        
@@ -3066,7 +2900,7 @@ Editor::get_relevant_audio_tracks (AudioTimeAxisView& base, set<AudioTimeAxisVie
                                
                                if ((tatv = dynamic_cast<AudioTimeAxisView*> (*i)) != 0) {
                                        
-                                       if (tatv->route().edit_group() == group) {
+                                       if (tatv->route()->edit_group() == group) {
                                                relevant_tracks.insert (tatv);
                                        }
                                }
@@ -3101,31 +2935,31 @@ Editor::mapover_audio_tracks (slot<void,AudioTimeAxisView&,uint32_t> sl)
 }
 
 void
-Editor::mapped_set_selected_regionview_from_click (AudioTimeAxisView& atv, uint32_t ignored, 
-                                                 AudioRegionView* basis, vector<AudioRegionView*>* all_equivs)
+Editor::mapped_set_selected_regionview_from_click (RouteTimeAxisView& tv, uint32_t ignored, 
+                                                  RegionView* basis, vector<RegionView*>* all_equivs)
 {
-       AudioPlaylist* pl;
-       vector<AudioRegion*> results;
-       AudioRegionView* marv;
-       AudioDiskstream* ds;
+       Playlist* pl;
+       vector<boost::shared_ptr<Region> > results;
+       RegionView* marv;
+       boost::shared_ptr<Diskstream> ds;
 
-       if ((ds = atv.get_diskstream()) == 0) {
+       if ((ds = tv.get_diskstream()) == 0) {
                /* bus */
                return;
        }
 
-       if (&atv == &basis->get_time_axis_view()) {
+       if (&tv == &basis->get_time_axis_view()) {
                /* looking in same track as the original */
                return;
        }
 
        
-       if ((pl = ds->playlist()) != 0) {
-               pl->get_equivalent_regions (basis->region, results);
+       if ((pl = dynamic_cast<Playlist*>(ds->playlist())) != 0) {
+               pl->get_equivalent_regions (basis->region(), results);
        }
        
-       for (vector<AudioRegion*>::iterator ir = results.begin(); ir != results.end(); ++ir) {
-               if ((marv = atv.view->find_view (**ir)) != 0) {
+       for (vector<boost::shared_ptr<Region> >::iterator ir = results.begin(); ir != results.end(); ++ir) {
+               if ((marv = tv.view()->find_view (*ir)) != 0) {
                        all_equivs->push_back (marv);
                }
        }
@@ -3134,7 +2968,7 @@ Editor::mapped_set_selected_regionview_from_click (AudioTimeAxisView& atv, uint3
 bool
 Editor::set_selected_regionview_from_click (bool press, Selection::Operation op, bool no_track_remove)
 {
-       vector<AudioRegionView*> all_equivalent_regions;
+       vector<RegionView*> all_equivalent_regions;
        bool commit = false;
 
        if (!clicked_regionview || !clicked_audio_trackview) {
@@ -3189,7 +3023,7 @@ Editor::set_selected_regionview_from_click (bool press, Selection::Operation op,
                                                commit = true;
                                        }
                                        
-                                       for (vector<AudioRegionView*>::iterator i = all_equivalent_regions.begin(); i != all_equivalent_regions.end(); ++i) {
+                                       for (vector<RegionView*>::iterator i = all_equivalent_regions.begin(); i != all_equivalent_regions.end(); ++i) {
                                                selection->add (*i);
                                        }
                                } 
@@ -3214,66 +3048,66 @@ Editor::set_selected_regionview_from_click (bool press, Selection::Operation op,
        } else if (op == Selection::Extend) {
 
                list<Selectable*> results;
-               jack_nframes_t last_frame;
-               jack_nframes_t first_frame;
+               nframes_t last_frame;
+               nframes_t first_frame;
 
                /* 1. find the last selected regionview in the track that was clicked in */
 
                last_frame = 0;
                first_frame = max_frames;
 
-               for (AudioRegionSelection::iterator x = selection->audio_regions.begin(); x != selection->audio_regions.end(); ++x) {
+               for (RegionSelection::iterator x = selection->regions.begin(); x != selection->regions.end(); ++x) {
                        if (&(*x)->get_time_axis_view() == &clicked_regionview->get_time_axis_view()) {
 
-                               if ((*x)->region.last_frame() > last_frame) {
-                                       last_frame = (*x)->region.last_frame();
+                               if ((*x)->region()->last_frame() > last_frame) {
+                                       last_frame = (*x)->region()->last_frame();
                                }
 
-                               if ((*x)->region.first_frame() < first_frame) {
-                                       first_frame = (*x)->region.first_frame();
+                               if ((*x)->region()->first_frame() < first_frame) {
+                                       first_frame = (*x)->region()->first_frame();
                                }
                        }
                }
 
                /* 2. figure out the boundaries for our search for new objects */
 
-               switch (clicked_regionview->region.coverage (first_frame, last_frame)) {
+               switch (clicked_regionview->region()->coverage (first_frame, last_frame)) {
                case OverlapNone:
                        cerr << "no overlap, first = " << first_frame << " last = " << last_frame << " region = " 
-                            << clicked_regionview->region.first_frame() << " .. " << clicked_regionview->region.last_frame() << endl;
+                            << clicked_regionview->region()->first_frame() << " .. " << clicked_regionview->region()->last_frame() << endl;
 
-                       if (last_frame < clicked_regionview->region.first_frame()) {
+                       if (last_frame < clicked_regionview->region()->first_frame()) {
                                first_frame = last_frame;
-                               last_frame = clicked_regionview->region.last_frame();
+                               last_frame = clicked_regionview->region()->last_frame();
                        } else {
                                last_frame = first_frame;
-                               first_frame = clicked_regionview->region.first_frame();
+                               first_frame = clicked_regionview->region()->first_frame();
                        }
                        break;
 
                case OverlapExternal:
                        cerr << "external overlap, first = " << first_frame << " last = " << last_frame << " region = " 
-                            << clicked_regionview->region.first_frame() << " .. " << clicked_regionview->region.last_frame() << endl;
+                            << clicked_regionview->region()->first_frame() << " .. " << clicked_regionview->region()->last_frame() << endl;
 
-                       if (last_frame < clicked_regionview->region.first_frame()) {
+                       if (last_frame < clicked_regionview->region()->first_frame()) {
                                first_frame = last_frame;
-                               last_frame = clicked_regionview->region.last_frame();
+                               last_frame = clicked_regionview->region()->last_frame();
                        } else {
                                last_frame = first_frame;
-                               first_frame = clicked_regionview->region.first_frame();
+                               first_frame = clicked_regionview->region()->first_frame();
                        }
                        break;
 
                case OverlapInternal:
                        cerr << "internal overlap, first = " << first_frame << " last = " << last_frame << " region = " 
-                            << clicked_regionview->region.first_frame() << " .. " << clicked_regionview->region.last_frame() << endl;
+                            << clicked_regionview->region()->first_frame() << " .. " << clicked_regionview->region()->last_frame() << endl;
 
-                       if (last_frame < clicked_regionview->region.first_frame()) {
+                       if (last_frame < clicked_regionview->region()->first_frame()) {
                                first_frame = last_frame;
-                               last_frame = clicked_regionview->region.last_frame();
+                               last_frame = clicked_regionview->region()->last_frame();
                        } else {
                                last_frame = first_frame;
-                               first_frame = clicked_regionview->region.first_frame();
+                               first_frame = clicked_regionview->region()->first_frame();
                        }
                        break;
 
@@ -3299,18 +3133,18 @@ Editor::set_selected_regionview_from_click (bool press, Selection::Operation op,
                
                /* 3. convert to a vector of audio regions */
 
-               vector<AudioRegionView*> audio_regions;
+               vector<RegionView*> regions;
                
                for (list<Selectable*>::iterator x = results.begin(); x != results.end(); ++x) {
-                       AudioRegionView* arv;
+                       RegionView* arv;
 
-                       if ((arv = dynamic_cast<AudioRegionView*>(*x)) != 0) {
-                               audio_regions.push_back (arv);
+                       if ((arv = dynamic_cast<RegionView*>(*x)) != 0) {
+                               regions.push_back (arv);
                        }
                }
 
-               if (!audio_regions.empty()) {
-                       selection->add (audio_regions);
+               if (!regions.empty()) {
+                       selection->add (regions);
                        commit = true;
                }
        }
@@ -3320,37 +3154,32 @@ Editor::set_selected_regionview_from_click (bool press, Selection::Operation op,
 }
 
 void
-Editor::set_selected_regionview_from_region_list (Region& r, Selection::Operation op)
+Editor::set_selected_regionview_from_region_list (boost::shared_ptr<Region> region, Selection::Operation op)
 {
-       vector<AudioRegionView*> all_equivalent_regions;
-       AudioRegion* region;
-
-       if ((region = dynamic_cast<AudioRegion*>(&r)) == 0) {
-               return;
-       }
+       vector<RegionView*> all_equivalent_regions;
 
        for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
                
-               AudioTimeAxisView* tatv;
+               RouteTimeAxisView* tatv;
                
-               if ((tatv = dynamic_cast<AudioTimeAxisView*> (*i)) != 0) {
+               if ((tatv = dynamic_cast<RouteTimeAxisView*> (*i)) != 0) {
                        
-                       AudioPlaylist* pl;
-                       vector<AudioRegion*> results;
-                       AudioRegionView* marv;
-                       AudioDiskstream* ds;
+                       Playlist* pl;
+                       vector<boost::shared_ptr<Region> > results;
+                       RegionView* marv;
+                       boost::shared_ptr<Diskstream> ds;
                        
                        if ((ds = tatv->get_diskstream()) == 0) {
                                /* bus */
                                continue;
                        }
 
-                       if ((pl = ds->playlist()) != 0) {
-                               pl->get_region_list_equivalent_regions (*region, results);
+                       if ((pl = dynamic_cast<Playlist*>(ds->playlist())) != 0) {
+                               pl->get_region_list_equivalent_regions (region, results);
                        }
                        
-                       for (vector<AudioRegion*>::iterator ir = results.begin(); ir != results.end(); ++ir) {
-                               if ((marv = tatv->view->find_view (**ir)) != 0) {
+                       for (vector<boost::shared_ptr<Region> >::iterator ir = results.begin(); ir != results.end(); ++ir) {
+                               if ((marv = tatv->view()->find_view (*ir)) != 0) {
                                        all_equivalent_regions.push_back (marv);
                                }
                        }
@@ -3377,25 +3206,25 @@ Editor::set_selected_regionview_from_region_list (Region& r, Selection::Operatio
 }
 
 bool
-Editor::set_selected_regionview_from_map_event (GdkEventAny* ev, StreamView* sv, Region* r)
+Editor::set_selected_regionview_from_map_event (GdkEventAny* ev, StreamView* sv, boost::shared_ptr<Region> r)
 {
-       AudioRegionView* rv;
-       AudioRegion* ar;
+       RegionView* rv;
+       boost::shared_ptr<AudioRegion> ar;
 
-       if ((ar = dynamic_cast<AudioRegion*> (r)) == 0) {
-               return TRUE;
+       if ((ar = boost::dynamic_pointer_cast<AudioRegion> (r)) == 0) {
+               return true;
        }
 
-       if ((rv = sv->find_view (*ar)) == 0) {
-               return TRUE;
+       if ((rv = sv->find_view (ar)) == 0) {
+               return true;
        }
 
        /* don't reset the selection if its something other than 
           a single other region.
        */
 
-       if (selection->audio_regions.size() > 1) {
-               return TRUE;
+       if (selection->regions.size() > 1) {
+               return true;
        }
        
        begin_reversible_command (_("set selected regions"));
@@ -3404,7 +3233,7 @@ Editor::set_selected_regionview_from_map_event (GdkEventAny* ev, StreamView* sv,
 
        commit_reversible_command () ;
 
-       return TRUE;
+       return true;
 }
 
 void
@@ -3559,7 +3388,7 @@ Editor::duplicate_dialog (bool dup_region)
 
        if (sscanf (text.c_str(), "%f", &times) == 1) {
                if (dup_region) {
-                       AudioRegionSelection regions;
+                       RegionSelection regions;
                        regions.add (clicked_regionview);
                        duplicate_some_regions (regions, times);
                } else {
@@ -3610,13 +3439,13 @@ Editor::edit_mode_selection_done ()
        string choice = edit_mode_selector.get_active_text();
        EditMode mode = Slide;
 
-       if (choice == _("Splice")) {
+       if (choice == _("Splice Edit")) {
                mode = Splice;
-       } else if (choice == _("Slide")) {
+       } else if (choice == _("Slide Edit")) {
                mode = Slide;
        }
 
-       session->set_edit_mode (mode);
+       Config->set_edit_mode (mode);
 }      
 
 void
@@ -3628,18 +3457,18 @@ Editor::snap_type_selection_done ()
 
        string choice = snap_type_selector.get_active_text();
        SnapType snaptype = SnapToFrame;
-       
+
        if (choice == _("Beats/3")) {
-                snaptype = SnapToAThirdBeat;
-        } else if (choice == _("Beats/4")) {
-                snaptype = SnapToAQuarterBeat;
-        } else if (choice == _("Beats/8")) {
-                snaptype = SnapToAEighthBeat;
-        } else if (choice == _("Beats/16")) {
-                snaptype = SnapToASixteenthBeat;
-        } else if (choice == _("Beats/32")) {
-                snaptype = SnapToAThirtysecondBeat;
-        } else if (choice == _("Beats")) {
+               snaptype = SnapToAThirdBeat;
+       } else if (choice == _("Beats/4")) {
+               snaptype = SnapToAQuarterBeat;
+       } else if (choice == _("Beats/8")) {
+               snaptype = SnapToAEighthBeat;
+       } else if (choice == _("Beats/16")) {
+               snaptype = SnapToASixteenthBeat;
+       } else if (choice == _("Beats/32")) {
+               snaptype = SnapToAThirtysecondBeat;
+       } else if (choice == _("Beats")) {
                snaptype = SnapToBeat;
        } else if (choice == _("Bars")) {
                snaptype = SnapToBar;
@@ -3667,10 +3496,10 @@ Editor::snap_type_selection_done ()
                snaptype = SnapToSeconds;
        } else if (choice == _("Minutes")) {
                snaptype = SnapToMinutes;
-        } else if (choice == _("None")) {
+       } else if (choice == _("None")) {
                snaptype = SnapToFrame;
        }
-       
+
        set_snap_to (snaptype);
 }      
 
@@ -3684,9 +3513,9 @@ Editor::snap_mode_selection_done ()
        string choice = snap_mode_selector.get_active_text();
        SnapMode mode = SnapNormal;
 
-       if (choice == _("Normal")) {
+       if (choice == _("Normal Snap")) {
                mode = SnapNormal;
-       } else if (choice == _("Magnetic")) {
+       } else if (choice == _("Magnetic Snap")) {
                mode = SnapMagnetic;
        }
 
@@ -3703,15 +3532,15 @@ Editor::zoom_focus_selection_done ()
        string choice = zoom_focus_selector.get_active_text();
        ZoomFocus focus_type = ZoomFocusLeft;
 
-       if (choice == _("Left")) {
+       if (choice == _("Focus Left")) {
                focus_type = ZoomFocusLeft;
-       } else if (choice == _("Right")) {
+       } else if (choice == _("Focus Right")) {
                focus_type = ZoomFocusRight;
-       } else if (choice == _("Center")) {
+       } else if (choice == _("Focus Center")) {
                focus_type = ZoomFocusCenter;
-        } else if (choice == _("Playhead")) {
+       } else if (choice == _("Focus Playhead")) {
                focus_type = ZoomFocusPlayhead;
-        } else if (choice == _("Edit Cursor")) {
+       } else if (choice == _("Focus Edit Cursor")) {
                focus_type = ZoomFocusEdit;
        } 
 
@@ -3781,7 +3610,7 @@ void
 Editor::region_selection_changed ()
 {
        for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
-               (*i)->set_selected_regionviews (selection->audio_regions);
+               (*i)->set_selected_regionviews (selection->regions);
        }
 }
 
@@ -3846,10 +3675,12 @@ Editor::get_valid_views (TimeAxisView* track, RouteGroup* group)
 void
 Editor::set_zoom_focus (ZoomFocus f)
 {
+       vector<string> txt = internationalize (zoom_focus_strings);
+       zoom_focus_selector.set_active_text (txt[(int)f]);
+       
        if (zoom_focus != f) {
                zoom_focus = f;
-               vector<string> txt = internationalize (zoom_focus_strings);
-               zoom_focus_selector.set_active_text (txt[(int)f]);
+
                ZoomFocusChanged (); /* EMIT_SIGNAL */
 
                instant_save ();
@@ -3996,10 +3827,10 @@ Editor::playlist_selector () const
        return *_playlist_selector;
 }
 
-jack_nframes_t
-Editor::get_nudge_distance (jack_nframes_t pos, jack_nframes_t& next)
+nframes_t
+Editor::get_nudge_distance (nframes_t pos, nframes_t& next)
 {
-       jack_nframes_t ret;
+       nframes_t ret;
 
        ret = nudge_clock.current_duration (pos);
        next = ret + 1; /* XXXX fix me */
@@ -4049,10 +3880,10 @@ Editor::playlist_deletion_dialog (Playlist* pl)
 }
 
 bool
-Editor::audio_region_selection_covers (jack_nframes_t where)
+Editor::audio_region_selection_covers (nframes_t where)
 {
-       for (AudioRegionSelection::iterator a = selection->audio_regions.begin(); a != selection->audio_regions.end(); ++a) {
-               if ((*a)->region.covers (where)) {
+       for (RegionSelection::iterator a = selection->regions.begin(); a != selection->regions.end(); ++a) {
+               if ((*a)->region()->covers (where)) {
                        return true;
                }
        }
@@ -4063,10 +3894,10 @@ Editor::audio_region_selection_covers (jack_nframes_t where)
 void
 Editor::prepare_for_cleanup ()
 {
-       cut_buffer->clear_audio_regions ();
+       cut_buffer->clear_regions ();
        cut_buffer->clear_playlists ();
 
-       selection->clear_audio_regions ();
+       selection->clear_regions ();
        selection->clear_playlists ();
 }
 
@@ -4187,6 +4018,7 @@ Editor::restore_editing_space ()
 {
        mouse_mode_tearoff->set_visible (true);
        tools_tearoff->set_visible (true);
+
        edit_pane.set_position (pre_maximal_pane_position);
 
        unfullscreen();
@@ -4240,51 +4072,3 @@ Editor::on_key_press_event (GdkEventKey* ev)
        return key_press_focus_accelerator_handler (*this, ev);
 }
 
-void
-Editor::update_layering_model ()
-{
-       RefPtr<Action> act;
-
-       switch (session->get_layer_model()) {
-       case Session::LaterHigher:
-               act = ActionManager::get_action (X_("Editor"), X_("LayerLaterHigher"));
-               break;
-       case Session::MoveAddHigher:
-               act = ActionManager::get_action (X_("Editor"), X_("LayerMoveAddHigher"));
-               break;
-       case Session::AddHigher:
-               act = ActionManager::get_action (X_("Editor"), X_("LayerAddHigher"));
-               break;
-       }
-
-       if (act) {
-               RefPtr<RadioAction> ract = RefPtr<RadioAction>::cast_dynamic(act);
-               if (ract && !ract->get_active()) {
-                       ract->set_active (true);
-               }
-       }
-}
-
-
-void
-Editor::update_crossfade_model ()
-{
-       RefPtr<Action> act;
-
-       switch (session->get_xfade_model()) {
-       case FullCrossfade:
-               act = ActionManager::get_action (X_("Editor"), X_("CrossfadesFull"));
-               break;
-       case ShortCrossfade:
-               act = ActionManager::get_action (X_("Editor"), X_("CrossfadesShort"));
-               break;
-       }
-
-       if (act) {
-               RefPtr<RadioAction> ract = RefPtr<RadioAction>::cast_dynamic(act);
-               if (ract && !ract->get_active()) {
-                       ract->set_active (true);
-               }
-       }
-}
-