Move mouse cursor stuff out of Editor into its own class.
[ardour.git] / gtk2_ardour / editor.cc
index 5b8cb55be8361cb3b8204de3d3b1ca5175f4c5fb..d19f5f6424d35edac0a1cc6dada990465bf230b8 100644 (file)
@@ -19,7 +19,6 @@
 
 /* Note: public Editor methods are documented in public_editor.h */
 
-#define __STDC_LIMIT_MACROS 1
 #include <stdint.h>
 #include <unistd.h>
 #include <cstdlib>
 #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/session_state_utils.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"
@@ -81,6 +88,7 @@
 #include "audio_time_axis.h"
 #include "utils.h"
 #include "crossfade_view.h"
+#include "canvas-noevent-text.h"
 #include "editing.h"
 #include "public_editor.h"
 #include "crossfade_edit.h"
 #include "mixer_strip.h"
 #include "editor_route_groups.h"
 #include "editor_regions.h"
+#include "editor_locations.h"
 #include "editor_snapshots.h"
+#include "editor_summary.h"
+#include "region_layering_order_editor.h"
+#include "mouse_cursors.h"
+#include "editor_cursors.h"
 
 #include "i18n.h"
 
 #endif
 
 using namespace std;
-using namespace sigc;
 using namespace ARDOUR;
 using namespace PBD;
 using namespace Gtk;
@@ -122,11 +134,10 @@ using namespace Editing;
 
 using PBD::internationalize;
 using PBD::atoi;
+using Gtkmm2ext::Keyboard;
 
 const double Editor::timebar_height = 15.0;
 
-#include "editor_xpms"
-
 static const gchar *_snap_type_strings[] = {
        N_("CD Frames"),
        N_("Timecode Frames"),
@@ -135,10 +146,20 @@ static const gchar *_snap_type_strings[] = {
        N_("Seconds"),
        N_("Minutes"),
        N_("Beats/32"),
+       N_("Beats/28"),
+       N_("Beats/24"),
+       N_("Beats/20"),
        N_("Beats/16"),
+       N_("Beats/14"),
+       N_("Beats/12"),
+       N_("Beats/10"),
        N_("Beats/8"),
+       N_("Beats/7"),
+       N_("Beats/6"),
+       N_("Beats/5"),
        N_("Beats/4"),
        N_("Beats/3"),
+       N_("Beats/2"),
        N_("Beats"),
        N_("Bars"),
        N_("Marks"),
@@ -169,7 +190,7 @@ static const gchar *_zoom_focus_strings[] = {
        N_("Center"),
        N_("Playhead"),
        N_("Mouse"),
-       N_("Active Mark"),
+       N_("Edit point"),
        0
 };
 
@@ -181,38 +202,43 @@ static const gchar *_rb_opt_strings[] = {
        N_("Unpitched percussion with stable notes"),
        N_("Crisp monophonic instrumental"),
        N_("Unpitched solo percussion"),
+       N_("Resample without preserving pitch"),
        0
 };
 #endif
 
-/* Soundfile  drag-n-drop */
-
-Gdk::Cursor* Editor::cross_hair_cursor = 0;
-Gdk::Cursor* Editor::selector_cursor = 0;
-Gdk::Cursor* Editor::trimmer_cursor = 0;
-Gdk::Cursor* Editor::grabber_cursor = 0;
-Gdk::Cursor* Editor::grabber_edit_point_cursor = 0;
-Gdk::Cursor* Editor::zoom_cursor = 0;
-Gdk::Cursor* Editor::time_fx_cursor = 0;
-Gdk::Cursor* Editor::fader_cursor = 0;
-Gdk::Cursor* Editor::speaker_cursor = 0;
-Gdk::Cursor* Editor::midi_pencil_cursor = 0;
-Gdk::Cursor* Editor::midi_select_cursor = 0;
-Gdk::Cursor* Editor::midi_resize_cursor = 0;
-Gdk::Cursor* Editor::midi_erase_cursor = 0;
-Gdk::Cursor* Editor::wait_cursor = 0;
-Gdk::Cursor* Editor::timebar_cursor = 0;
-Gdk::Cursor* Editor::transparent_cursor = 0;
-
 void
 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"))
@@ -229,12 +255,10 @@ Editor::Editor ()
          */
 
        , vertical_adjustment (0.0, 0.0, 10.0, 400.0)
-       , horizontal_adjustment (0.0, 0.0, 20.0, 1200.0)
 
          /* tool bar related */
 
-       , edit_point_clock (X_("editpoint"), false, X_("EditPointClock"), true)
-       , zoom_range_clock (X_("zoomrange"), false, X_("ZoomRangeClock"), true, true)
+       , zoom_range_clock (X_("zoomrange"), false, X_("ZoomRangeClock"), true, false, true)
 
        , toolbar_selection_clock_table (2,3)
 
@@ -249,10 +273,13 @@ Editor::Editor ()
 
          /* nudge */
 
-       , nudge_clock (X_("nudge"), false, X_("NudgeClock"), true, true)
+       , nudge_clock (X_("nudge"), false, X_("NudgeClock"), true, false, true)
        , meters_running(false)
        , _pending_locate_request (false)
+       , _pending_initial_locate (false)
+       , _last_cut_copy_source_track (0)
 
+       , _region_selection_change_updates_region_list (true)
 {
        constructed = false;
 
@@ -260,7 +287,6 @@ Editor::Editor ()
 
        PublicEditor::_instance = this;
 
-       session = 0;
        _have_idled = false;
 
        selection = new Selection (this);
@@ -272,7 +298,8 @@ Editor::Editor ()
        clicked_crossfadeview = 0;
        clicked_control_point = 0;
        last_update_frame = 0;
-       _drag = 0;
+        pre_press_cursor = 0;
+       _drags = new DragManager (this);
        current_mixer_strip = 0;
        current_bbt_points = 0;
        tempo_lines = 0;
@@ -283,6 +310,7 @@ Editor::Editor ()
        edit_point_strings = I18N (_edit_point_strings);
 #ifdef USE_RUBBERBAND
        rb_opt_strings = I18N (_rb_opt_strings);
+       rb_current_opt = 4;
 #endif
 
        snap_threshold = 5.0;
@@ -293,30 +321,27 @@ 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;
+       tempo_or_meter_marker_menu = 0;
        transport_marker_menu = 0;
        new_transport_marker_menu = 0;
        editor_mixer_strip_width = Wide;
@@ -330,20 +355,15 @@ Editor::Editor ()
        entered_regionview = 0;
        entered_marker = 0;
        clear_entered_track = false;
-       _new_regionviews_show_envelope = false;
        current_timefx = 0;
        playhead_cursor = 0;
        button_release_can_deselect = true;
        _dragging_playhead = false;
        _dragging_edit_point = false;
-       _dragging_hscrollbar = false;
        select_new_marker = false;
        rhythm_ferret = 0;
+        layering_order_editor = 0;
        _bundle_manager = 0;
-       for (ARDOUR::DataType::iterator i = ARDOUR::DataType::begin(); i != ARDOUR::DataType::end(); ++i) {
-               _global_port_matrix[*i] = 0;
-       }
-       allow_vertical_scroll = false;
        no_save_visual = false;
        resize_idle_id = -1;
 
@@ -362,11 +382,12 @@ Editor::Editor ()
        current_canvas_cursor = 0;
 
        frames_per_unit = 2048; /* too early to use reset_zoom () */
-       reset_hscrollbar_stepping ();
+
+       _scroll_callbacks = 0;
 
        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);
@@ -431,19 +452,18 @@ 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));
+       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);
@@ -453,24 +473,13 @@ Editor::Editor ()
 
        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));
-
-       edit_vscrollbar.set_adjustment (vertical_adjustment);
-       edit_hscrollbar.set_adjustment (horizontal_adjustment);
-
-       edit_hscrollbar.signal_button_press_event().connect (mem_fun(*this, &Editor::hscrollbar_button_press), false);
-       edit_hscrollbar.signal_button_release_event().connect (mem_fun(*this, &Editor::hscrollbar_button_release), false);
-       edit_hscrollbar.signal_size_allocate().connect (mem_fun(*this, &Editor::hscrollbar_allocate));
-
-       edit_hscrollbar.set_name ("EditorHScrollbar");
-
-       build_cursors ();
+       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));
 
-       edit_point_clock.ValueChanged.connect (mem_fun(*this, &Editor::edit_point_clock_changed));
+       _cursors = new MouseCursors;
 
        ArdourCanvas::Canvas* time_pad = manage(new ArdourCanvas::Canvas());
        ArdourCanvas::SimpleLine* pad_line_1 = manage(new ArdourCanvas::SimpleLine(*time_pad->root(),
@@ -484,11 +493,11 @@ 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.
@@ -505,7 +514,6 @@ Editor::Editor ()
        edit_packer.set_border_width (0);
        edit_packer.set_name ("EditorWindow");
 
-       edit_packer.attach (zoom_vbox,               0, 1, 0, 2,    SHRINK,        FILL, 0, 0);
        /* labels for the rulers */
        edit_packer.attach (ruler_label_event_box,   1, 2, 0, 1,    FILL,        SHRINK, 0, 0);
        /* labels for the marker "tracks" */
@@ -524,29 +532,14 @@ Editor::Editor ()
        _routes = new EditorRoutes (this);
        _regions = new EditorRegions (this);
        _snapshots = new EditorSnapshots (this);
-
-       named_selection_scroller.add (named_selection_display);
-       named_selection_scroller.set_policy (POLICY_NEVER, POLICY_AUTOMATIC);
-
-       named_selection_model = TreeStore::create (named_selection_columns);
-       named_selection_display.set_model (named_selection_model);
-       named_selection_display.append_column (_("Chunks"), named_selection_columns.text);
-       named_selection_display.set_headers_visible (false);
-       named_selection_display.set_size_request (100, -1);
-       named_selection_display.set_name ("NamedSelectionDisplay");
-
-       named_selection_display.get_selection()->set_mode (SELECTION_SINGLE);
-       named_selection_display.set_size_request (100, -1);
-       named_selection_display.signal_button_release_event().connect (mem_fun(*this, &Editor::named_selection_display_button_release), false);
-       named_selection_display.signal_key_release_event().connect (mem_fun(*this, &Editor::named_selection_display_key_release), false);
-       named_selection_display.get_selection()->signal_changed().connect (mem_fun (*this, &Editor::named_selection_display_selection_changed));
+       _locations = new EditorLocations (this);
 
        Gtk::Label* nlabel;
 
        nlabel = manage (new Label (_("Regions")));
        nlabel->set_angle (-90);
        the_notebook.append_page (_regions->widget (), *nlabel);
-       nlabel = manage (new Label (_("Tracks/Busses")));
+       nlabel = manage (new Label (_("Tracks & Busses")));
        nlabel->set_angle (-90);
        the_notebook.append_page (_routes->widget (), *nlabel);
        nlabel = manage (new Label (_("Snapshots")));
@@ -555,31 +548,70 @@ Editor::Editor ()
        nlabel = manage (new Label (_("Route Groups")));
        nlabel->set_angle (-90);
        the_notebook.append_page (_route_groups->widget (), *nlabel);
-
-       if (!Profile->get_sae()) {
-               nlabel = manage (new Label (_("Chunks")));
-               nlabel->set_angle (-90);
-               the_notebook.append_page (named_selection_scroller, *nlabel);
-       }
+       nlabel = manage (new Label (_("Ranges & Marks")));
+       nlabel->set_angle (-90);
+       the_notebook.append_page (_locations->widget (), *nlabel);
 
        the_notebook.set_show_tabs (true);
        the_notebook.set_scrollable (true);
-       the_notebook.popup_enable ();
+       the_notebook.popup_disable ();
        the_notebook.set_tab_pos (Gtk::POS_RIGHT);
        the_notebook.show_all ();
-
+       
        post_maximal_editor_width = 0;
-       post_maximal_pane_position = 0;
-
-       VPaned *editor_summary_pane = manage(new VPaned());
-       editor_summary_pane->pack1(edit_packer);
-       editor_summary_pane->pack2(*_summary);
-
-       edit_pane.pack1 (*editor_summary_pane, true, true);
+       post_maximal_horizontal_pane_position = 0;
+       post_maximal_editor_height = 0;
+       post_maximal_vertical_pane_position = 0;
+
+       editor_summary_pane.pack1(edit_packer);
+
+       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_pressed().connect (sigc::hide_return (sigc::mem_fun (*this, &Editor::horizontal_scroll_left_press)));
+       summary_arrows_left_left->signal_released().connect (sigc::mem_fun (*this, &Editor::horizontal_scroll_left_release));
+       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_pressed().connect (sigc::hide_return (sigc::mem_fun (*this, &Editor::horizontal_scroll_right_press)));
+       summary_arrows_left_right->signal_released().connect (sigc::mem_fun (*this, &Editor::horizontal_scroll_right_release));
+       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_pressed().connect (sigc::hide_return (sigc::mem_fun (*this, &Editor::horizontal_scroll_left_press)));
+       summary_arrows_right_left->signal_released().connect (sigc::mem_fun (*this, &Editor::horizontal_scroll_left_release));
+       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_pressed().connect (sigc::hide_return (sigc::mem_fun (*this, &Editor::horizontal_scroll_right_press)));
+       summary_arrows_right_right->signal_released().connect (sigc::mem_fun (*this, &Editor::horizontal_scroll_right_release));
+       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);
+
+       Frame* summary_frame = manage (new Frame);
+       summary_frame->set_shadow_type (Gtk::SHADOW_ETCHED_IN);
+       summary_frame->add (*_summary);
+       summary_frame->show ();
+
+       _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);
+
+       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)));
+       editor_summary_pane.signal_size_allocate().connect (sigc::bind (sigc::mem_fun (*this, &Editor::pane_allocation_handler), static_cast<Paned*> (&editor_summary_pane)));
 
+       /* XXX: editor_summary_pane might need similar special OS X treatment to the 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);
@@ -612,22 +644,16 @@ Editor::Editor ()
        set_mouse_mode (MouseObject, true);
        set_edit_point_preference (EditAtMouse, true);
 
-       XMLNode* node = ARDOUR_UI::instance()->editor_settings();
-       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");
 
@@ -658,28 +684,41 @@ Editor::Editor ()
        WindowTitle title(Glib::get_application_name());
        title += _("Editor");
        set_title (title.get_string());
-       set_wmclass (X_("ardour_editor"), "Ardour");
+       set_wmclass (X_("ardour_editor"), PROGRAM_NAME);
 
        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 */
 
-       Config->ParameterChanged.connect (mem_fun (*this, &Editor::parameter_changed));
+       Session::AskAboutPlaylistDeletion.connect_same_thread (*this, boost::bind (&Editor::playlist_deletion_dialog, this, _1));
 
-       _last_normalization_value = 0;
+       Config->ParameterChanged.connect (*this, invalidator (*this), ui_bind (&Editor::parameter_changed, this, _1), gui_context());
+
+       TimeAxisView::CatchDeletion.connect (*this, invalidator (*this), ui_bind (&Editor::timeaxisview_deleted, this, _1), gui_context());
+
+       _ignore_region_action = false;
+       _last_region_menu_was_main = false;
+       _popup_region_menu_item = 0;
+
+       _show_marker_lines = false;
+       _over_region_trim_target = false;
 
        constructed = true;
        instant_save ();
+
+       setup_fade_images ();
 }
 
 Editor::~Editor()
@@ -695,11 +734,11 @@ Editor::~Editor()
                image_socket_listener = 0 ;
        }
 #endif
-
+        
        delete _routes;
        delete _route_groups;
        delete track_canvas;
-       delete _drag;
+       delete _drags;
 }
 
 void
@@ -716,10 +755,8 @@ 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) {
@@ -729,6 +766,10 @@ Editor::catch_vanishing_regionview (RegionView *rv)
        if (entered_regionview == rv) {
                set_entered_regionview (0);
        }
+
+       if (!_all_region_actions_sensitized) {
+               sensitize_all_region_actions (true);
+       }
 }
 
 void
@@ -743,7 +784,14 @@ Editor::set_entered_regionview (RegionView* rv)
        }
 
        if ((entered_regionview = rv) != 0) {
-               entered_regionview->entered ();
+               entered_regionview->entered (internal_editing ());
+       }
+
+       if (!_all_region_actions_sensitized && _last_region_menu_was_main) {
+               /* This RegionView entry might have changed what region actions
+                  are allowed, so sensitize them all in case a key is pressed.
+               */
+               sensitize_all_region_actions (true);
        }
 }
 
@@ -795,38 +843,17 @@ 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());
        }
 }
 
-void
-Editor::edit_point_clock_changed()
-{
-       if (_dragging_edit_point) {
-               return;
-       }
-
-       if (selection->markers.empty()) {
-               return;
-       }
-
-       bool ignored;
-       Location* loc = find_location_from_marker (selection->markers.front(), ignored);
-
-       if (!loc) {
-               return;
-       }
-
-       loc->move_to (edit_point_clock.current_time());
-}
-
 void
 Editor::zoom_adjustment_changed ()
 {
-       if (session == 0) {
+       if (_session == 0) {
                return;
        }
 
@@ -834,10 +861,10 @@ 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;
-               zoom_range_clock.set ((nframes64_t) floor (fpu * _canvas_width));
+               zoom_range_clock.set ((framepos_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 ((framepos_t) floor (fpu * _canvas_width));
        }
 
        temporal_zoom (fpu);
@@ -846,9 +873,9 @@ 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;
        }
 
@@ -857,7 +884,7 @@ Editor::control_scroll (float fraction)
        /*
                _control_scroll_target is an optional<T>
 
-               it acts like a pointer to an nframes64_t, with
+               it acts like a pointer to an framepos_t, with
                a operator conversion to boolean to check
                that it has a value could possibly use
                playhead_cursor->current_frame to store the
@@ -866,16 +893,16 @@ Editor::control_scroll (float fraction)
        */
 
        if (!_control_scroll_target) {
-               _control_scroll_target = session->transport_frame();
+               _control_scroll_target = _session->transport_frame();
                _dragging_playhead = true;
        }
 
-       if ((fraction < 0.0f) && (*_control_scroll_target < (nframes64_t) fabs(step))) {
+       if ((fraction < 0.0f) && (*_control_scroll_target < (framepos_t) fabs(step))) {
                *_control_scroll_target = 0;
-       } else if ((fraction > 0.0f) && (max_frames - *_control_scroll_target < step)) {
-               *_control_scroll_target = max_frames - (current_page_frames()*2); // allow room for slop in where the PH is on the screen
+       } else if ((fraction > 0.0f) && (max_framepos - *_control_scroll_target < step)) {
+               *_control_scroll_target = max_framepos - (current_page_frames()*2); // allow room for slop in where the PH is on the screen
        } else {
-               *_control_scroll_target += (nframes64_t) floor (step);
+               *_control_scroll_target += (framepos_t) floor (step);
        }
 
        /* move visuals, we'll catch up with it later */
@@ -902,13 +929,13 @@ 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*/)
+Editor::deferred_control_scroll (framepos_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;
@@ -918,11 +945,11 @@ 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() );
@@ -930,8 +957,6 @@ Editor::access_action (std::string action_group, std::string action_item)
        if (act) {
                act->activate();
        }
-
-
 }
 
 void
@@ -942,34 +967,23 @@ Editor::on_realize ()
 }
 
 void
-Editor::start_scrolling ()
-{
-       scroll_connection = ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect
-               (mem_fun(*this, &Editor::update_current_screen));
-
-}
-
-void
-Editor::stop_scrolling ()
+Editor::map_position_change (framepos_t frame)
 {
-       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) {
                return;
        }
 
-       center_screen (frame);
+       if (_follow_playhead) {
+               center_screen (frame);
+       }
+
        playhead_cursor->set_position (frame);
 }
 
 void
-Editor::center_screen (nframes64_t frame)
+Editor::center_screen (framepos_t frame)
 {
        double page = _canvas_width * frames_per_unit;
 
@@ -982,12 +996,12 @@ Editor::center_screen (nframes64_t frame)
 }
 
 void
-Editor::center_screen_internal (nframes64_t frame, float page)
+Editor::center_screen_internal (framepos_t frame, float page)
 {
        page /= 2;
 
        if (frame > page) {
-               frame -= (nframes64_t) page;
+               frame -= (framepos_t) page;
        } else {
                frame = 0;
        }
@@ -995,47 +1009,21 @@ Editor::center_screen_internal (nframes64_t frame, float page)
        reset_x_origin (frame);
 }
 
-void
-Editor::handle_new_duration ()
-{
-       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);
-
-       horizontal_adjustment.set_upper (new_end / frames_per_unit);
-       horizontal_adjustment.set_page_size (current_page_frames()/frames_per_unit);
-
-       if (horizontal_adjustment.get_value() + _canvas_width > horizontal_adjustment.get_upper()) {
-               horizontal_adjustment.set_value (horizontal_adjustment.get_upper() - _canvas_width);
-       }
-       //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) {
@@ -1049,133 +1037,129 @@ Editor::update_title ()
 }
 
 void
-Editor::connect_to_session (Session *t)
+Editor::set_session (Session *t)
 {
-       session = t;
+       SessionHandlePtr::set_session (t);
 
-       compute_fixed_ruler_scale ();
+       if (!_session) {
+               return;
+       }
 
-       /* there are never any selected regions at startup */
+       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);
 
-       sensitize_the_right_region_actions (false);
+       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 ();
 
        XMLNode* node = ARDOUR_UI::instance()->editor_settings();
        set_state (*node, Stateful::loading_state_version);
 
        /* 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->NamedSelectionAdded.connect (mem_fun(*this, &Editor::handle_new_named_selection)));
-       session_connections.push_back (session->NamedSelectionRemoved.connect (mem_fun(*this, &Editor::handle_new_named_selection)));
-       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->StepEditStatusChange.connect (_session_connections, invalidator (*this), ui_bind(&Editor::step_edit_status_change, this, _1), gui_context());
+       _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->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->history().Changed.connect (_session_connections, invalidator (*this), boost::bind (&Editor::history_changed, this), gui_context());
 
-       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)));
-
-       edit_point_clock.set_mode(AudioClock::BBT);
-       edit_point_clock.set_session (session);
-       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 (*_session, 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 (*_session, 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 ();
-
-       redisplay_named_selections ();
 
        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:
@@ -1189,85 +1173,28 @@ Editor::connect_to_session (Session *t)
        }
 
        /* register for undo history */
-       session->register_with_memento_command_factory(_id, this);
+       _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);
+       ActionManager::ui_manager->signal_pre_activate().connect (sigc::mem_fun (*this, &Editor::action_pre_activated));
 
-       start_updating ();
+       start_updating_meters ();
 }
 
 void
-Editor::build_cursors ()
+Editor::action_pre_activated (Glib::RefPtr<Action> const & a)
 {
-       using namespace Gdk;
-
-       Gdk::Color mbg ("#000000" ); /* Black */
-       Gdk::Color mfg ("#0000ff" ); /* Blue. */
-
-       {
-               RefPtr<Bitmap> source, mask;
-               source = Bitmap::create (mag_bits, mag_width, mag_height);
-               mask = Bitmap::create (magmask_bits, mag_width, mag_height);
-               zoom_cursor = new Gdk::Cursor (source, mask, mfg, mbg, mag_x_hot, mag_y_hot);
-       }
-
-       Gdk::Color fbg ("#ffffff" );
-       Gdk::Color ffg  ("#000000" );
-
-       {
-               RefPtr<Bitmap> source, mask;
-
-               source = Bitmap::create (fader_cursor_bits, fader_cursor_width, fader_cursor_height);
-               mask = Bitmap::create (fader_cursor_mask_bits, fader_cursor_width, fader_cursor_height);
-               fader_cursor = new Gdk::Cursor (source, mask, ffg, fbg, fader_cursor_x_hot, fader_cursor_y_hot);
-       }
-
-       {
-               RefPtr<Bitmap> source, mask;
-               source = Bitmap::create (speaker_cursor_bits, speaker_cursor_width, speaker_cursor_height);
-               mask = Bitmap::create (speaker_cursor_mask_bits, speaker_cursor_width, speaker_cursor_height);
-               speaker_cursor = new Gdk::Cursor (source, mask, ffg, fbg, speaker_cursor_x_hot, speaker_cursor_y_hot);
-       }
-
-       {
-               RefPtr<Bitmap> bits;
-               char pix[4] = { 0, 0, 0, 0 };
-               bits = Bitmap::create (pix, 2, 2);
-               Gdk::Color c;
-               transparent_cursor = new Gdk::Cursor (bits, bits, c, c, 0, 0);
-       }
-
-       {
-               RefPtr<Bitmap> bits;
-               char pix[4] = { 0, 0, 0, 0 };
-               bits = Bitmap::create (pix, 2, 2);
-               Gdk::Color c;
-               transparent_cursor = new Gdk::Cursor (bits, bits, c, c, 0, 0);
-       }
-
+       if (a->get_name() == "RegionMenu") {
+               /* When the main menu's region menu is opened, we setup the actions so that they look right
+                  in the menu.  I can't find a way of getting a signal when this menu is subsequently closed,
+                  so we resensitize all region actions when the entered regionview or the region selection
+                  changes.  HOWEVER we can't always resensitize on entered_regionview change because that
+                  happens after the region context menu is opened.  So we set a flag here, too.
 
-       grabber_cursor = new Gdk::Cursor (HAND2);
-
-       {
-               Glib::RefPtr<Gdk::Pixbuf> grabber_edit_point_pixbuf (::get_icon ("grabber_edit_point"));
-               grabber_edit_point_cursor = new Gdk::Cursor (Gdk::Display::get_default(), grabber_edit_point_pixbuf, 5, 17);
+                  What a carry on :(
+               */
+               sensitize_the_right_region_actions ();
+               _last_region_menu_was_main = true;
        }
-
-       cross_hair_cursor = new Gdk::Cursor (CROSSHAIR);
-       trimmer_cursor =  new Gdk::Cursor (SB_H_DOUBLE_ARROW);
-       selector_cursor = new Gdk::Cursor (XTERM);
-       time_fx_cursor = new Gdk::Cursor (SIZING);
-       wait_cursor = new Gdk::Cursor  (WATCH);
-       timebar_cursor = new Gdk::Cursor(LEFT_PTR);
-       midi_pencil_cursor = new Gdk::Cursor (PENCIL);
-       midi_select_cursor = new Gdk::Cursor (CENTER_PTR);
-       midi_resize_cursor = new Gdk::Cursor (SIZING);
-       midi_erase_cursor = new Gdk::Cursor (DRAPED_BOX);
 }
 
 /** Pop up a context menu for when the user clicks on a fade in or fade out */
@@ -1290,22 +1217,65 @@ 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), FadeLinear)));
+                       items.push_back (MenuElem (_("Slowest"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), FadeFast)));
+                       
                } 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 (
+                               ImageMenuElem (
+                                       _("Linear"),
+                                       *_fade_in_images[FadeLinear],
+                                       sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), FadeLinear)
+                                       )
+                               );
+
+                       dynamic_cast<ImageMenuItem*>(&items.back())->set_always_show_image ();
+
+                       items.push_back (
+                               ImageMenuElem (
+                                       _("Slowest"),
+                                       *_fade_in_images[FadeFast],
+                                       sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), FadeFast)
+                                       ));
+                       
+                       dynamic_cast<ImageMenuItem*>(&items.back())->set_always_show_image ();
+                       
+                       items.push_back (
+                               ImageMenuElem (
+                                       _("Slow"),
+                                       *_fade_in_images[FadeLogB],
+                                       sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), FadeLogB)
+                                       ));
+                       
+                       dynamic_cast<ImageMenuItem*>(&items.back())->set_always_show_image ();
+                       
+                       items.push_back (
+                               ImageMenuElem (
+                                       _("Fast"),
+                                       *_fade_in_images[FadeLogA],
+                                       sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), FadeLogA)
+                                       ));
+                       
+                       dynamic_cast<ImageMenuItem*>(&items.back())->set_always_show_image ();
+                       
+                       items.push_back (
+                               ImageMenuElem (
+                                       _("Fastest"),
+                                       *_fade_in_images[FadeSlow],
+                                       sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), FadeSlow)
+                                       ));
+                       
+                       dynamic_cast<ImageMenuItem*>(&items.back())->set_always_show_image ();
                }
 
                break;
@@ -1313,22 +1283,63 @@ 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), FadeLinear)));
+                       items.push_back (MenuElem (_("Slowest"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), FadeSlow)));
                } 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 (
+                               ImageMenuElem (
+                                       _("Linear"),
+                                       *_fade_out_images[FadeLinear],
+                                       sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), FadeLinear)
+                                       )
+                               );
+
+                       dynamic_cast<ImageMenuItem*>(&items.back())->set_always_show_image ();
+
+                       items.push_back (
+                               ImageMenuElem (
+                                       _("Slowest"),
+                                       *_fade_out_images[FadeFast],
+                                       sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), FadeSlow)
+                                       ));
+                       
+                       dynamic_cast<ImageMenuItem*>(&items.back())->set_always_show_image ();
+                       
+                       items.push_back (
+                               ImageMenuElem (
+                                       _("Slow"),
+                                       *_fade_out_images[FadeLogB],
+                                       sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), FadeLogA)
+                                       ));
+                       
+                       dynamic_cast<ImageMenuItem*>(&items.back())->set_always_show_image ();
+                       
+                       items.push_back (
+                               ImageMenuElem (
+                                       _("Fast"),
+                                       *_fade_out_images[FadeLogA],
+                                       sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), FadeLogB)
+                                       ));
+                       
+                       dynamic_cast<ImageMenuItem*>(&items.back())->set_always_show_image ();
+                       
+                       items.push_back (
+                               ImageMenuElem (
+                                       _("Fastest"),
+                                       *_fade_out_images[FadeSlow],
+                                       sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), FadeFast)
+                                       ));
+                       
+                       dynamic_cast<ImageMenuItem*>(&items.back())->set_always_show_image ();
                }
 
                break;
@@ -1344,16 +1355,18 @@ 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, nframes64_t frame)
+Editor::popup_track_context_menu (int button, int32_t time, ItemType item_type, bool with_selection)
 {
        using namespace Menu_Helpers;
-       Menu* (Editor::*build_menu_function)(nframes64_t);
+       Menu* (Editor::*build_menu_function)();
        Menu *menu;
 
        switch (item_type) {
        case RegionItem:
        case RegionViewName:
        case RegionViewNameHighlight:
+       case LeftFrameHandle:
+       case RightFrameHandle:
                if (with_selection) {
                        build_menu_function = &Editor::build_track_selection_context_menu;
                } else {
@@ -1374,7 +1387,7 @@ 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;
@@ -1386,7 +1399,7 @@ Editor::popup_track_context_menu (int button, int32_t time, ItemType item_type,
                return;
        }
 
-       menu = (this->*build_menu_function)(frame);
+       menu = (this->*build_menu_function)();
        menu->set_name ("ArdourContextMenu");
 
        /* now handle specific situations */
@@ -1395,6 +1408,8 @@ Editor::popup_track_context_menu (int button, int32_t time, ItemType item_type,
        case RegionItem:
        case RegionViewName:
        case RegionViewNameHighlight:
+        case LeftFrameHandle:
+        case RightFrameHandle:
                if (!with_selection) {
                        if (region_edit_menu_split_item) {
                                if (clicked_regionview && clicked_regionview->region()->covers (get_preferred_edit_position())) {
@@ -1403,16 +1418,13 @@ Editor::popup_track_context_menu (int button, int32_t time, ItemType item_type,
                                        ActionManager::set_sensitive (ActionManager::edit_point_in_region_sensitive_actions, false);
                                }
                        }
-                       /*
                        if (region_edit_menu_split_multichannel_item) {
-                               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);
+                               if (clicked_regionview && clicked_regionview->region()->n_channels() > 1) {
+                                       region_edit_menu_split_multichannel_item->set_sensitive (true);
                                } else {
-                                       // GTK2FIX see above
-                                       // region_edit_menu_split_multichannel_item->set_sensitive (false);
+                                       region_edit_menu_split_multichannel_item->set_sensitive (false);
                                }
-                       }*/
+                       }
                }
                break;
 
@@ -1441,15 +1453,15 @@ 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;
                }
 
@@ -1459,11 +1471,18 @@ Editor::popup_track_context_menu (int button, int32_t time, ItemType item_type,
                clicked_routeview->build_underlay_menu(menu);
        }
 
+       /* When the region menu is opened, we setup the actions so that they look right
+          in the menu.
+       */
+       sensitize_the_right_region_actions ();
+       _last_region_menu_was_main = false;
+
+       menu->signal_hide().connect (sigc::bind (sigc::mem_fun (*this, &Editor::sensitize_all_region_actions), true));
        menu->popup (button, time);
 }
 
 Menu*
-Editor::build_track_context_menu (nframes64_t)
+Editor::build_track_context_menu ()
 {
        using namespace Menu_Helpers;
 
@@ -1475,7 +1494,7 @@ Editor::build_track_context_menu (nframes64_t)
 }
 
 Menu*
-Editor::build_track_bus_context_menu (nframes64_t)
+Editor::build_track_bus_context_menu ()
 {
        using namespace Menu_Helpers;
 
@@ -1487,34 +1506,31 @@ Editor::build_track_bus_context_menu (nframes64_t)
 }
 
 Menu*
-Editor::build_track_region_context_menu (nframes64_t frame)
+Editor::build_track_region_context_menu ()
 {
        using namespace Menu_Helpers;
        MenuList& edit_items  = track_region_context_menu.items();
        edit_items.clear();
 
+       /* we've just cleared the track region context menu, so the menu that these
+          two items were on will have disappeared; stop them dangling.
+       */
+       region_edit_menu_split_item = 0;
+       region_edit_menu_split_multichannel_item = 0;
+
        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 (selection->regions.size() > 1) {
-                               // there's already a multiple selection: just add a
-                               // single region context menu that will act on all
-                               // selected regions
-                               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) {
-                                       add_region_context_items (rtv->view(), (*i), edit_items);
-                               }
-                       }
-
-                       delete regions;
+               /* Don't offer a region submenu if we are in internal edit mode, as we don't select regions in this
+                  mode and so offering region context is somewhat confusing.
+               */
+               if ((tr = rtv->track()) && ((pl = tr->playlist())) && !internal_editing()) {
+                        framepos_t const framepos = (framepos_t) floor ((double) get_preferred_edit_position() * tr->speed());
+                        uint32_t regions_at = pl->count_regions_at (framepos);
+                        add_region_context_items (edit_items, regions_at > 1);
                }
        }
 
@@ -1524,7 +1540,7 @@ Editor::build_track_region_context_menu (nframes64_t frame)
 }
 
 Menu*
-Editor::build_track_crossfade_context_menu (nframes64_t frame)
+Editor::build_track_crossfade_context_menu ()
 {
        using namespace Menu_Helpers;
        MenuList& edit_items  = track_crossfade_context_menu.items();
@@ -1533,16 +1549,15 @@ 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;
 
-                       apl->crossfades_at (frame, xfades);
+                       apl->crossfades_at (get_preferred_edit_position (), xfades);
 
                        bool many = xfades.size() > 1;
 
@@ -1550,18 +1565,9 @@ Editor::build_track_crossfade_context_menu (nframes64_t frame)
                                add_crossfade_context_items (atv->audio_view(), (*i), edit_items, many);
                        }
 
-                       if (selection->regions.size() > 1) {
-                               // there's already a multiple selection: just add a
-                               // single region context menu that will act on all
-                               // selected regions
-                               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) {
-                                       add_region_context_items (atv->audio_view(), (*i), edit_items);
-                               }
-                       }
-                       delete regions;
+                       framepos_t framepos = (framepos_t) floor ((double) get_preferred_edit_position() * tr->speed());
+                       uint32_t regions_at = pl->count_regions_at (framepos);
+                        add_region_context_items (edit_items, regions_at > 1);
                }
        }
 
@@ -1571,13 +1577,13 @@ Editor::build_track_crossfade_context_menu (nframes64_t frame)
 }
 
 void
-Editor::analyze_region_selection()
+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();
        }
@@ -1594,8 +1600,8 @@ 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();
        }
@@ -1607,7 +1613,7 @@ Editor::analyze_range_selection()
 }
 
 Menu*
-Editor::build_track_selection_context_menu (nframes64_t)
+Editor::build_track_selection_context_menu ()
 {
        using namespace Menu_Helpers;
        MenuList& edit_items  = track_selection_context_menu.items();
@@ -1638,18 +1644,18 @@ 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) {
@@ -1681,218 +1687,10 @@ Editor::xfade_edit_right_region ()
 }
 
 void
-Editor::add_region_context_items (StreamView* sv, boost::shared_ptr<Region> region, Menu_Helpers::MenuList& edit_items)
+Editor::add_region_context_items (Menu_Helpers::MenuList& edit_items, bool multiple_regions_at_position)
 {
        using namespace Menu_Helpers;
-       Gtk::MenuItem* foo_item;
-       Menu     *region_menu = manage (new Menu);
-       MenuList& items       = region_menu->items();
-       region_menu->set_name ("ArdourContextMenu");
-
-       boost::shared_ptr<AudioRegion> ar;
-       boost::shared_ptr<MidiRegion>  mr;
-
-       if (region) {
-               ar = boost::dynamic_pointer_cast<AudioRegion> (region);
-               mr = boost::dynamic_pointer_cast<MidiRegion> (region);
-
-               /* when this particular menu pops up, make the relevant region
-                  become selected.
-               */
-
-               region_menu->signal_map_event().connect (
-                       bind (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)));
-               if (mr && internal_editing()) {
-                       items.push_back (MenuElem (_("List editor..."), 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 (_("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 (SeparatorElem());
-       items.push_back (MenuElem (_("Define sync point"), 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 (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)));
-
-       if (ar) {
-               items.push_back (MenuElem (_("Spectral Analysis"), mem_fun(*this, &Editor::analyze_region_selection)));
-       }
-
-       items.push_back (SeparatorElem());
-
-       sigc::connection fooc;
-       boost::shared_ptr<Region> region_to_check;
-
-       if (region) {
-               region_to_check = region;
-       } else {
-               region_to_check = selection->regions.front()->region();
-       }
-
-       items.push_back (CheckMenuElem (_("Lock")));
-       CheckMenuItem* region_lock_item = static_cast<CheckMenuItem*>(&items.back());
-       if (region_to_check->locked()) {
-               region_lock_item->set_active();
-       }
-       region_lock_item->signal_activate().connect (mem_fun(*this, &Editor::toggle_region_lock));
-
-       items.push_back (CheckMenuElem (_("Glue to Bars&Beats")));
-       CheckMenuItem* bbt_glue_item = static_cast<CheckMenuItem*>(&items.back());
-
-       switch (region_to_check->positional_lock_style()) {
-       case Region::MusicTime:
-               bbt_glue_item->set_active (true);
-               break;
-       default:
-               bbt_glue_item->set_active (false);
-               break;
-       }
-
-       bbt_glue_item->signal_activate().connect (bind (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));
-       if (region_to_check->muted()) {
-               fooc.block (true);
-               region_mute_item->set_active();
-               fooc.block (false);
-       }
-
-       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));
-               if (region_to_check->opaque()) {
-                       fooc.block (true);
-                       region_opaque_item->set_active();
-                       fooc.block (false);
-               }
-       }
-
-       items.push_back (CheckMenuElem (_("Original position"), mem_fun(*this, &Editor::naturalize)));
-       if (region_to_check->at_natural_position()) {
-               items.back().set_sensitive (false);
-       }
-
-       items.push_back (SeparatorElem());
-
-       if (ar) {
-
-               RegionView* rv = sv->find_view (ar);
-               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 (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));
-                       if (arv->envelope_visible()) {
-                               fooc.block (true);
-                               region_envelope_visible_item->set_active (true);
-                               fooc.block (false);
-                       }
-
-                       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));
-
-                       if (ar->envelope_active()) {
-                               fooc.block (true);
-                               region_envelope_active_item->set_active (true);
-                               fooc.block (false);
-                       }
-
-                       items.push_back (SeparatorElem());
-               }
-
-               items.push_back (MenuElem (_("Normalize"), 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)));
-               }
-
-       } else if (mr) {
-               items.push_back (MenuElem (_("Quantize"), 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 (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)));
-       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 (SeparatorElem());
-
-       /* Nudge region */
-
-       Menu *nudge_menu = manage (new Menu());
-       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))));
-
-       items.push_back (MenuElem (_("Nudge"), *nudge_menu));
-       items.push_back (SeparatorElem());
-
-       Menu *trim_menu = manage (new Menu);
-       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)));
-       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)));
-       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)));
-
-       items.push_back (MenuElem (_("Trim"), *trim_menu));
-       items.push_back (SeparatorElem());
-
-       items.push_back (MenuElem (_("Split"), (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))));
-       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 (SeparatorElem());
-       items.push_back (MenuElem (_("Remove"), mem_fun(*this, &Editor::remove_selected_regions)));
-
+       
        /* OK, stick the region submenu at the top of the list, and then add
           the standard items.
        */
@@ -1901,15 +1699,28 @@ Editor::add_region_context_items (StreamView* sv, boost::shared_ptr<Region> regi
           meaning for menu titles.
        */
 
+       RegionSelection rs = get_regions_from_selection_and_entered ();
+       
        string::size_type pos = 0;
-       string menu_item_name = (region) ? region->name() : _("Selected regions");
+       string menu_item_name = (rs.size() == 1) ? rs.front()->region()->name() : _("Selected Regions");
 
        while ((pos = menu_item_name.find ("_", pos)) != string::npos) {
                menu_item_name.replace (pos, 1, "__");
                pos += 2;
        }
 
-       edit_items.push_back (MenuElem (menu_item_name, *region_menu));
+       if (_popup_region_menu_item == 0) {
+               _popup_region_menu_item = new MenuItem (menu_item_name);
+               _popup_region_menu_item->set_submenu (*dynamic_cast<Menu*> (ActionManager::get_widget (X_("/PopupRegionMenu"))));
+               _popup_region_menu_item->show ();
+       } else {
+               _popup_region_menu_item->set_label (menu_item_name);
+       }
+
+       edit_items.push_back (*_popup_region_menu_item);
+       if (multiple_regions_at_position && (layering_order_editor == 0 || !layering_order_editor->is_visible ())) {
+               edit_items.push_back (*manage (_region_actions->get_action ("choose-top-region")->create_menu_item ()));
+       }
        edit_items.push_back (SeparatorElem());
 }
 
@@ -1921,44 +1732,43 @@ 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 (_("Convert to region in-place"), 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 (_("Create Chunk from Range"), mem_fun(*this, &Editor::create_named_selection)));
+       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_selection)));
 }
 
 
@@ -1973,11 +1783,11 @@ 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::bind (sigc::mem_fun (*this, &Editor::set_loop_from_region), true)));
 
        edit_items.push_back (MenuElem (_("Play"), *play_menu));
 
@@ -1987,21 +1797,21 @@ 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));
 
@@ -2011,26 +1821,22 @@ 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 (_("Insert chunk"), bind (mem_fun(*this, &Editor::paste_named_selection), 1.0f)));
+       cutnpaste_items.push_back (MenuElem (_("Align"), sigc::bind (sigc::mem_fun (*this, &Editor::align_regions), ARDOUR::SyncPoint)));
+       cutnpaste_items.push_back (MenuElem (_("Align Relative"), sigc::bind (sigc::mem_fun (*this, &Editor::align_regions_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 */
 
@@ -2039,10 +1845,10 @@ 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));
 }
@@ -2058,8 +1864,8 @@ 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 */
@@ -2068,15 +1874,15 @@ 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));
 
@@ -2086,19 +1892,19 @@ 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));
 }
@@ -2136,11 +1942,21 @@ Editor::set_snap_to (SnapType st)
        instant_save ();
 
        switch (_snap_type) {
-       case SnapToAThirtysecondBeat:
-       case SnapToASixteenthBeat:
-       case SnapToAEighthBeat:
-       case SnapToAQuarterBeat:
-       case SnapToAThirdBeat:
+       case SnapToBeatDiv32:
+       case SnapToBeatDiv28:
+       case SnapToBeatDiv24:
+       case SnapToBeatDiv20:
+       case SnapToBeatDiv16:
+       case SnapToBeatDiv14:
+       case SnapToBeatDiv12:
+       case SnapToBeatDiv10:
+       case SnapToBeatDiv8:
+       case SnapToBeatDiv7:
+       case SnapToBeatDiv6:
+       case SnapToBeatDiv5:
+       case SnapToBeatDiv4:
+       case SnapToBeatDiv3:
+       case SnapToBeatDiv2:
                compute_bbt_ruler_scale (leftmost_frame, leftmost_frame + current_page_frames());
                update_tempo_based_rulers ();
                break;
@@ -2155,7 +1971,9 @@ Editor::set_snap_to (SnapType st)
        default:
                /* relax */
                break;
-    }
+       }
+
+       SnapChanged (); /* EMIT SIGNAL */
 }
 
 void
@@ -2188,26 +2006,6 @@ Editor::set_edit_point_preference (EditPoint ep, bool force)
                return;
        }
 
-       switch (zoom_focus) {
-       case ZoomFocusMouse:
-       case ZoomFocusPlayhead:
-       case ZoomFocusEdit:
-               switch (_edit_point) {
-               case EditAtMouse:
-                       set_zoom_focus (ZoomFocusMouse);
-                       break;
-               case EditAtPlayhead:
-                       set_zoom_focus (ZoomFocusPlayhead);
-                       break;
-               case EditAtSelectedMarker:
-                       set_zoom_focus (ZoomFocusEdit);
-                       break;
-               }
-               break;
-       default:
-               break;
-       }
-
        const char* action=NULL;
 
        switch (_edit_point) {
@@ -2227,7 +2025,7 @@ Editor::set_edit_point_preference (EditPoint ep, bool force)
                Glib::RefPtr<RadioAction>::cast_dynamic(act)->set_active (true);
        }
 
-       nframes64_t foo;
+       framepos_t foo;
        bool in_track_canvas;
 
        if (!mouse_frame (foo, in_track_canvas)) {
@@ -2306,21 +2104,14 @@ 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"))) {
+               framepos_t pos;
+                sscanf (prop->value().c_str(), "%" PRIi64, &pos);
                playhead_cursor->set_position (pos);
        } else {
                playhead_cursor->set_position (0);
-
-               /* reset_x_origin() doesn't work right here, since the old
-                  position may be zero already, and it does nothing in such
-                  circumstances.
-               */
-
-               leftmost_frame = 0;
-               horizontal_adjustment.set_value (0);
        }
-
+       
        if ((prop = node.property ("mixer-width"))) {
                editor_mixer_strip_width = Width (string_2_enum (prop->value(), editor_mixer_strip_width));
        }
@@ -2331,6 +2122,8 @@ Editor::set_state (const XMLNode& node, int /*version*/)
 
        if ((prop = node.property ("zoom"))) {
                reset_zoom (PBD::atof (prop->value()));
+       } else {
+               reset_zoom (frames_per_unit);
        }
 
        if ((prop = node.property ("snap-to"))) {
@@ -2343,13 +2136,22 @@ 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);
        }
 
+       if ((prop = node.property ("left-frame")) != 0){
+               framepos_t pos;
+               if (sscanf (prop->value().c_str(), "%" PRId64, &pos) == 1) {
+                       reset_x_origin (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"));
@@ -2360,25 +2162,17 @@ 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"))) {
                bool yn = string_is_affirmative (prop->value());
-               _show_measures = !yn;
+               _show_measures = yn;
                RefPtr<Action> act = ActionManager::get_action (X_("Editor"), X_("ToggleMeasureVisibility"));
                if (act) {
                        RefPtr<ToggleAction> tact = RefPtr<ToggleAction>::cast_dynamic(act);
@@ -2400,8 +2194,21 @@ 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"))) {
@@ -2413,34 +2220,50 @@ Editor::set_state (const XMLNode& node, int /*version*/)
        if ((prop = node.property ("show-editor-mixer"))) {
 
                Glib::RefPtr<Action> act = ActionManager::get_action (X_("Editor"), X_("show-editor-mixer"));
-               if (act) {
+               assert (act);
 
-                       Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
-                       bool yn = string_is_affirmative (prop->value());
-
-                       /* do it twice to force the change */
-
-                       tact->set_active (!yn);
-                       tact->set_active (yn);
-               }
+               Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
+               bool yn = string_is_affirmative (prop->value());
+               
+               /* do it twice to force the change */
+               
+               tact->set_active (!yn);
+               tact->set_active (yn);
        }
 
        if ((prop = node.property ("show-editor-list"))) {
 
                Glib::RefPtr<Action> act = ActionManager::get_action (X_("Editor"), X_("show-editor-list"));
-               assert(act);
-               if (act) {
+               assert (act);
 
-                       Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
-                       bool yn = string_is_affirmative (prop->value());
+               Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
+               bool yn = string_is_affirmative (prop->value());
+               
+               /* do it twice to force the change */
+               
+               tact->set_active (!yn);
+               tact->set_active (yn);
+       }
 
-                       /* do it twice to force the change */
+       if ((prop = node.property (X_("editor-list-page")))) {
+               the_notebook.set_current_page (atoi (prop->value ()));
+       }
 
-                       tact->set_active (!yn);
-                       tact->set_active (yn);
-               }
+       if ((prop = node.property (X_("show-marker-lines")))) {
+               Glib::RefPtr<Action> act = ActionManager::get_action (X_("Editor"), X_("show-marker-lines"));
+               assert (act);
+               Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic (act);
+               bool yn = string_is_affirmative (prop->value ());
+
+               tact->set_active (!yn);
+               tact->set_active (yn);
        }
 
+       XMLNodeList children = node.children ();
+       for (XMLNodeList::const_iterator i = children.begin(); i != children.end(); ++i) {
+               selection->set_state (**i, Stateful::current_state_version);
+               _regions->set_state (**i);
+       }
 
        return 0;
 }
@@ -2477,7 +2300,9 @@ Editor::get_state ()
                snprintf(buf, sizeof(buf), "%d", yoff);
                geometry->add_property("y-off", string(buf));
                snprintf(buf,sizeof(buf), "%d",gtk_paned_get_position (static_cast<Paned*>(&edit_pane)->gobj()));
-               geometry->add_property("edit_pane_pos", string(buf));
+               geometry->add_property("edit-horizontal-pane-pos", string(buf));
+               snprintf(buf,sizeof(buf), "%d",gtk_paned_get_position (static_cast<Paned*>(&editor_summary_pane)->gobj()));
+               geometry->add_property("edit-vertical-pane-pos", string(buf));
 
                node->add_child_nocopy (*geometry);
        }
@@ -2497,14 +2322,19 @@ Editor::get_state ()
 
        snprintf (buf, sizeof (buf), "%" PRIi64, playhead_cursor->current_frame);
        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) {
@@ -2518,6 +2348,14 @@ 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);
+
+       node->add_property (X_("show-marker-lines"), _show_marker_lines ? "yes" : "no");
+
+       node->add_child_nocopy (selection->get_state ());
+       node->add_child_nocopy (_regions->get_state ());
+       
        return *node;
 }
 
@@ -2545,12 +2383,12 @@ 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)
+Editor::snap_to_with_modifier (framepos_t& start, GdkEvent const * event, int32_t direction, bool for_mark)
 {
-       if (!session) {
+       if (!_session || !event) {
                return;
        }
 
@@ -2566,9 +2404,9 @@ 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)
+Editor::snap_to (framepos_t& start, int32_t direction, bool for_mark)
 {
-       if (!session || _snap_mode == SnapOff) {
+       if (!_session || _snap_mode == SnapOff) {
                return;
        }
 
@@ -2576,58 +2414,58 @@ 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*/)
+Editor::timecode_snap_to_internal (framepos_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 framepos_t one_timecode_second = (framepos_t)(rint(_session->timecode_frames_per_second()) * _session->frames_per_timecode_frame());
+       framepos_t one_timecode_minute = (framepos_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 = (framepos_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 = (framepos_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;
+                       start = (framepos_t) ceil ((double) start / one_timecode_second) * one_timecode_second;
                } else {
-                       start = (nframes64_t) floor ((double) start / one_timecode_second) * one_timecode_second;
+                       start = (framepos_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;
+                       start = (framepos_t) ceil ((double) start / one_timecode_minute) * one_timecode_minute;
                } else {
-                       start = (nframes64_t) floor ((double) start / one_timecode_minute) * one_timecode_minute;
+                       start = (framepos_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:
@@ -2637,13 +2475,13 @@ 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)
+Editor::snap_to_internal (framepos_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;
-       nframes64_t presnap = start;
-       nframes64_t before;
-       nframes64_t after;
+       const framepos_t one_second = _session->frame_rate();
+       const framepos_t one_minute = _session->frame_rate() * 60;
+       framepos_t presnap = start;
+       framepos_t before;
+       framepos_t after;
 
        switch (_snap_type) {
        case SnapToTimecodeFrame:
@@ -2653,54 +2491,80 @@ Editor::snap_to_internal (nframes64_t& start, int32_t direction, bool for_mark)
 
        case SnapToCDFrame:
                if (((direction == 0) && (start % (one_second/75) > (one_second/75) / 2)) || (direction > 0)) {
-                       start = (nframes64_t) ceil ((double) start / (one_second / 75)) * (one_second / 75);
+                       start = (framepos_t) ceil ((double) start / (one_second / 75)) * (one_second / 75);
                } else {
-                       start = (nframes64_t) floor ((double) start / (one_second / 75)) * (one_second / 75);
+                       start = (framepos_t) floor ((double) start / (one_second / 75)) * (one_second / 75);
                }
                break;
 
        case SnapToSeconds:
                if (((direction == 0) && (start % one_second > one_second / 2)) || (direction > 0)) {
-                       start = (nframes64_t) ceil ((double) start / one_second) * one_second;
+                       start = (framepos_t) ceil ((double) start / one_second) * one_second;
                } else {
-                       start = (nframes64_t) floor ((double) start / one_second) * one_second;
+                       start = (framepos_t) floor ((double) start / one_second) * one_second;
                }
                break;
 
        case SnapToMinutes:
                if (((direction == 0) && (start % one_minute > one_minute / 2)) || (direction > 0)) {
-                       start = (nframes64_t) ceil ((double) start / one_minute) * one_minute;
+                       start = (framepos_t) ceil ((double) start / one_minute) * one_minute;
                } else {
-                       start = (nframes64_t) floor ((double) start / one_minute) * one_minute;
+                       start = (framepos_t) floor ((double) start / one_minute) * one_minute;
                }
                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);
+       case SnapToBeatDiv32:
+               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);
+       case SnapToBeatDiv28:
+               start = _session->tempo_map().round_to_beat_subdivision (start, 28, direction);
                break;
-
-       case SnapToAEighthBeat:
-               start = session->tempo_map().round_to_beat_subdivision (start, 8, direction);
+       case SnapToBeatDiv24:
+               start = _session->tempo_map().round_to_beat_subdivision (start, 24, direction);
                break;
-
-       case SnapToAQuarterBeat:
-               start = session->tempo_map().round_to_beat_subdivision (start, 4, direction);
+       case SnapToBeatDiv20:
+               start = _session->tempo_map().round_to_beat_subdivision (start, 20, direction);
                break;
-
-       case SnapToAThirdBeat:
-               start = session->tempo_map().round_to_beat_subdivision (start, 3, direction);
+       case SnapToBeatDiv16:
+               start = _session->tempo_map().round_to_beat_subdivision (start, 16, direction);
+               break;
+       case SnapToBeatDiv14:
+               start = _session->tempo_map().round_to_beat_subdivision (start, 14, direction);
+               break;
+       case SnapToBeatDiv12:
+               start = _session->tempo_map().round_to_beat_subdivision (start, 12, direction);
+               break;
+       case SnapToBeatDiv10:
+               start = _session->tempo_map().round_to_beat_subdivision (start, 10, direction);
+               break;
+       case SnapToBeatDiv8:
+               start = _session->tempo_map().round_to_beat_subdivision (start, 8, direction);
+               break;
+       case SnapToBeatDiv7:
+               start = _session->tempo_map().round_to_beat_subdivision (start, 7, direction);
+               break;
+       case SnapToBeatDiv6:
+               start = _session->tempo_map().round_to_beat_subdivision (start, 6, direction);
+               break;
+       case SnapToBeatDiv5:
+               start = _session->tempo_map().round_to_beat_subdivision (start, 5, direction);
+               break;
+       case SnapToBeatDiv4:
+               start = _session->tempo_map().round_to_beat_subdivision (start, 4, direction);
+               break;
+       case SnapToBeatDiv3:
+               start = _session->tempo_map().round_to_beat_subdivision (start, 3, direction);
+               break;
+       case SnapToBeatDiv2:
+               start = _session->tempo_map().round_to_beat_subdivision (start, 2, direction);
                break;
 
        case SnapToMark:
@@ -2708,13 +2572,13 @@ 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) {
+               if (before == max_framepos) {
                        start = after;
-               } else if (after == max_frames) {
+               } else if (after == max_framepos) {
                        start = before;
-               } else if (before != max_frames && after != max_frames) {
+               } else if (before != max_framepos && after != max_framepos) {
                        /* have before and after */
                        if ((start - before) < (after - start)) {
                                start = before;
@@ -2731,8 +2595,8 @@ Editor::snap_to_internal (nframes64_t& start, int32_t direction, bool for_mark)
        case SnapToRegionBoundary:
                if (!region_boundary_cache.empty()) {
 
-                       vector<nframes64_t>::iterator prev = region_boundary_cache.end ();
-                       vector<nframes64_t>::iterator next = region_boundary_cache.end ();
+                       vector<framepos_t>::iterator prev = region_boundary_cache.end ();
+                       vector<framepos_t>::iterator next = region_boundary_cache.end ();
 
                        if (direction > 0) {
                                next = std::upper_bound (region_boundary_cache.begin(), region_boundary_cache.end(), start);
@@ -2745,8 +2609,8 @@ Editor::snap_to_internal (nframes64_t& start, int32_t direction, bool for_mark)
                                prev--;
                        }
 
-                       nframes64_t const p = (prev == region_boundary_cache.end()) ? region_boundary_cache.front () : *prev;
-                       nframes64_t const n = (next == region_boundary_cache.end()) ? region_boundary_cache.back () : *next;
+                       framepos_t const p = (prev == region_boundary_cache.end()) ? region_boundary_cache.front () : *prev;
+                       framepos_t const n = (next == region_boundary_cache.end()) ? region_boundary_cache.back () : *next;
 
                        if (start > (p + n) / 2) {
                                start = n;
@@ -2796,23 +2660,33 @@ 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));
@@ -2823,27 +2697,27 @@ 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);
@@ -2851,6 +2725,7 @@ 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");
@@ -2858,8 +2733,8 @@ 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);
@@ -2868,83 +2743,75 @@ 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 */
 
-       zoom_box.set_spacing (1);
-       zoom_box.set_border_width (0);
+       _zoom_box.set_spacing (1);
+       _zoom_box.set_border_width (0);
 
        zoom_in_button.set_name ("EditorTimeButton");
-       zoom_in_button.set_size_request(-1,16);
-       zoom_in_button.add (*(manage (new Image (::get_icon("zoom_in")))));
-       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_size_request(-1,16);
-       zoom_out_button.add (*(manage (new Image (::get_icon("zoom_out")))));
-       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_size_request(-1,16);
-       zoom_out_full_button.add (*(manage (new Image (::get_icon("zoom_full")))));
-       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);
-       zoom_box.pack_start (zoom_out_full_button, false, false);
+       _zoom_box.pack_start (zoom_out_button, false, false);
+       _zoom_box.pack_start (zoom_in_button, false, false);
+       _zoom_box.pack_start (zoom_out_full_button, false, false);
 
+       _zoom_box.pack_start (zoom_focus_selector);
+       
        /* Track zoom buttons */
        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"));
-
-       track_zoom_box.set_spacing (1);
-       track_zoom_box.set_border_width (0);
-
-       track_zoom_box.pack_start (tav_shrink_button, false, false);
-       track_zoom_box.pack_start (tav_expand_button, false, false);
-
-       HBox* zbc = manage (new HBox);
-       zbc->pack_start (zoom_focus_selector, PACK_SHRINK);
-       zoom_vbox.pack_start (*zbc, PACK_SHRINK);
-       zoom_vbox.pack_start (zoom_box, PACK_SHRINK);
-       zoom_vbox.pack_start (track_zoom_box, PACK_SHRINK);
-
+       tav_shrink_button.signal_clicked().connect (sigc::bind (sigc::mem_fun(*this, &Editor::tav_zoom_step), false));
+
+       _zoom_box.pack_start (tav_shrink_button);
+       _zoom_box.pack_start (tav_expand_button);
+       
+       _zoom_tearoff = manage (new TearOff (_zoom_box));
+
+       _zoom_tearoff->Detach.connect (sigc::bind (sigc::mem_fun(*this, &Editor::detach_tearoff), static_cast<Box*>(&toolbar_hbox),
+                                                  &_zoom_tearoff->tearoff_window()));
+       _zoom_tearoff->Attach.connect (sigc::bind (sigc::mem_fun(*this, &Editor::reattach_tearoff), static_cast<Box*> (&toolbar_hbox),
+                                                  &_zoom_tearoff->tearoff_window(), 0));
+       _zoom_tearoff->Hidden.connect (sigc::bind (sigc::mem_fun(*this, &Editor::detach_tearoff), static_cast<Box*>(&toolbar_hbox),
+                                                  &_zoom_tearoff->tearoff_window()));
+       _zoom_tearoff->Visible.connect (sigc::bind (sigc::mem_fun(*this, &Editor::reattach_tearoff), static_cast<Box*> (&toolbar_hbox),
+                                                   &_zoom_tearoff->tearoff_window(), 0));
+       
        snap_box.set_spacing (1);
        snap_box.set_border_width (2);
 
        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 (edit_point_clock, false, false);
        snap_box.pack_start (snap_mode_selector, false, false);
        snap_box.pack_start (snap_type_selector, false, false);
        snap_box.pack_start (edit_point_selector, false, false);
@@ -2955,8 +2822,8 @@ 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);
@@ -2968,28 +2835,29 @@ 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 (*_zoom_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);
@@ -3005,13 +2873,40 @@ 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_gain_button, _("Draw Region Gain"));
+       ARDOUR_UI::instance()->set_tip (mouse_zoom_button, _("Select Zoom Range"));
+       ARDOUR_UI::instance()->set_tip (mouse_timefx_button, _("Stretch/Shrink Regions and MIDI Notes"));
+       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: click to (de)activate\nContext-click for other 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"));
+       ARDOUR_UI::instance()->set_tip (edit_mode_selector, _("Edit Mode"));
+}
+
 void
 Editor::midi_panic ()
 {
        cerr << "MIDI panic\n";
 
-       if (session) {
-               session->midi_panic();
+       if (_session) {
+               _session->midi_panic();
        }
 }
 
@@ -3023,7 +2918,6 @@ 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 */
@@ -3038,7 +2932,7 @@ Editor::setup_midi_toolbar ()
 
 int
 Editor::convert_drop_to_paths (
-               vector<ustring>&                paths,
+               vector<string>&                paths,
                const RefPtr<Gdk::DragContext>& /*context*/,
                gint                            /*x*/,
                gint                            /*y*/,
@@ -3046,11 +2940,11 @@ Editor::convert_drop_to_paths (
                guint                           /*info*/,
                guint                           /*time*/)
 {
-       if (session == 0) {
+       if (_session == 0) {
                return -1;
        }
-
-       vector<ustring> uris = data.get_uris();
+        
+       vector<string> uris = data.get_uris();
 
        if (uris.empty()) {
 
@@ -3068,7 +2962,7 @@ Editor::convert_drop_to_paths (
                   THERE MAY BE NO NULL TERMINATING CHAR!!!
                */
 
-               ustring txt = data.get_text();
+               string txt = data.get_text();
                const char* p;
                const char* q;
 
@@ -3096,7 +2990,7 @@ Editor::convert_drop_to_paths (
 
                                        if (q > p)
                                        {
-                                               uris.push_back (ustring (p, q - p + 1));
+                                               uris.push_back (string (p, q - p + 1));
                                        }
                                }
                        }
@@ -3112,18 +3006,18 @@ Editor::convert_drop_to_paths (
                }
        }
 
-       for (vector<ustring>::iterator i = uris.begin(); i != uris.end(); ++i) {
+       for (vector<string>::iterator i = uris.begin(); i != uris.end(); ++i) {
 
                if ((*i).substr (0,7) == "file://") {
 
-                       ustring p = *i;
+                       string p = *i;
                        PBD::url_decode (p);
 
                        // scan forward past three slashes
 
-                       ustring::size_type slashcnt = 0;
-                       ustring::size_type n = 0;
-                       ustring::iterator x = p.begin();
+                       string::size_type slashcnt = 0;
+                       string::size_type n = 0;
+                       string::iterator x = p.begin();
 
                        while (slashcnt < 3 && x != p.end()) {
                                if ((*x) == '/') {
@@ -3156,9 +3050,9 @@ 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;
        }
 
@@ -3177,40 +3071,19 @@ 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 ();
        }
 }
 
@@ -3231,7 +3104,7 @@ 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);
@@ -3243,20 +3116,20 @@ 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;
        }
@@ -3273,20 +3146,16 @@ Editor::duplicate_dialog (bool with_dialog)
                }
        }
 
-       RegionSelection rs;
-       get_regions_for_action (rs);
-
-       if (mouse_mode != MouseRange) {
+       RegionSelection rs = get_regions_from_selection_and_entered ();
 
-               if (rs.empty()) {
-                       return;
-               }
+       if (mouse_mode != MouseRange && rs.empty()) {
+               return;
        }
 
        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;
@@ -3301,7 +3170,7 @@ 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 ();
@@ -3371,7 +3240,7 @@ Editor::clamp_verbose_cursor_y (double y)
 }
 
 void
-Editor::show_verbose_canvas_cursor_with (const string & txt)
+Editor::show_verbose_canvas_cursor_with (const string & txt, int32_t xoffset, int32_t yoffset)
 {
        verbose_canvas_cursor->property_text() = txt.c_str();
 
@@ -3381,12 +3250,8 @@ Editor::show_verbose_canvas_cursor_with (const string & txt)
        track_canvas->get_pointer (x, y);
        track_canvas->window_to_world (x, y, wx, wy);
 
-       /* move it away from the mouse pointer to avoid an
-          infinite loop of enter/leave events.
-       */
-
-       wx += 20;
-       wy += 20;
+        wx += xoffset;
+        wy += yoffset;
 
        /* don't get too close to the edge */
        verbose_canvas_cursor->property_x() = clamp_verbose_cursor_x (wx);
@@ -3439,22 +3304,7 @@ Editor::cycle_edit_mode ()
 void
 Editor::edit_mode_selection_done ()
 {
-       if (session == 0) {
-               return;
-       }
-
-       string choice = edit_mode_selector.get_active_text();
-       EditMode mode = Slide;
-
-       if (choice == _("Splice Edit")) {
-               mode = Splice;
-       } else if (choice == _("Slide Edit")) {
-               mode = Slide;
-       } else if (choice == _("Lock Edit")) {
-               mode = Lock;
-       }
-
-       Config->set_edit_mode (mode);
+       Config->set_edit_mode (string_to_edit_mode (edit_mode_selector.get_active_text ()));
 }
 
 void
@@ -3463,16 +3313,36 @@ Editor::snap_type_selection_done ()
        string choice = snap_type_selector.get_active_text();
        SnapType snaptype = SnapToBeat;
 
-       if (choice == _("Beats/3")) {
-               snaptype = SnapToAThirdBeat;
+       if (choice == _("Beats/2")) {
+               snaptype = SnapToBeatDiv2;
+       } else if (choice == _("Beats/3")) {
+               snaptype = SnapToBeatDiv3;
        } else if (choice == _("Beats/4")) {
-               snaptype = SnapToAQuarterBeat;
+               snaptype = SnapToBeatDiv4;
+       } else if (choice == _("Beats/5")) {
+               snaptype = SnapToBeatDiv5;
+       } else if (choice == _("Beats/6")) {
+               snaptype = SnapToBeatDiv6;
+       } else if (choice == _("Beats/7")) {
+               snaptype = SnapToBeatDiv7;
        } else if (choice == _("Beats/8")) {
-               snaptype = SnapToAEighthBeat;
+               snaptype = SnapToBeatDiv8;
+       } else if (choice == _("Beats/10")) {
+               snaptype = SnapToBeatDiv10;
+       } else if (choice == _("Beats/12")) {
+               snaptype = SnapToBeatDiv12;
+       } else if (choice == _("Beats/14")) {
+               snaptype = SnapToBeatDiv14;
        } else if (choice == _("Beats/16")) {
-               snaptype = SnapToASixteenthBeat;
+               snaptype = SnapToBeatDiv16;
+       } else if (choice == _("Beats/20")) {
+               snaptype = SnapToBeatDiv20;
+       } else if (choice == _("Beats/24")) {
+               snaptype = SnapToBeatDiv24;
+       } else if (choice == _("Beats/28")) {
+               snaptype = SnapToBeatDiv28;
        } else if (choice == _("Beats/32")) {
-               snaptype = SnapToAThirtysecondBeat;
+               snaptype = SnapToBeatDiv32;
        } else if (choice == _("Beats")) {
                snaptype = SnapToBeat;
        } else if (choice == _("Bars")) {
@@ -3581,16 +3451,12 @@ Editor::zoom_focus_selection_done ()
                focus_type = ZoomFocusRight;
        } else if (choice == _("Center")) {
                focus_type = ZoomFocusCenter;
-       } else if (choice == _("Play")) {
+       } else if (choice == _("Playhead")) {
                focus_type = ZoomFocusPlayhead;
-       } else if (choice == _("Edit")) {
-               focus_type = ZoomFocusEdit;
-       } else if (choice == _("Active Mark")) {
-               focus_type = ZoomFocusEdit;
-       } else if (choice == _("Active Mark")) {
-               focus_type = ZoomFocusEdit;
-       } else {
+       } else if (choice == _("Mouse")) {
                focus_type = ZoomFocusMouse;
+       } else if (choice == _("Edit point")) {
+               focus_type = ZoomFocusEdit;
        }
 
        RefPtr<RadioAction> ract = zoom_focus_action (focus_type);
@@ -3621,43 +3487,6 @@ 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)
 {
@@ -3694,7 +3523,14 @@ Editor::pane_allocation_handler (Allocation &alloc, Paned* which)
        char buf[32];
        XMLNode* node = ARDOUR_UI::instance()->editor_settings();
        int width, height;
-       static int32_t done;
+
+       enum Pane {
+               Horizontal = 0x1,
+               Vertical = 0x2
+       };
+
+       static Pane done;
+       
        XMLNode* geometry;
 
        width = default_width;
@@ -3702,15 +3538,11 @@ Editor::pane_allocation_handler (Allocation &alloc, Paned* which)
 
        if ((geometry = find_named_node (*node, "geometry")) != 0) {
 
-               if ((prop = geometry->property ("x_size")) == 0) {
-                       prop = geometry->property ("x-size");
-               }
+               prop = geometry->property ("x-size");
                if (prop) {
                        width = atoi (prop->value());
                }
-               if ((prop = geometry->property ("y_size")) == 0) {
-                       prop = geometry->property ("y-size");
-               }
+               prop = geometry->property ("y-size");
                if (prop) {
                        height = atoi (prop->value());
                }
@@ -3718,11 +3550,11 @@ Editor::pane_allocation_handler (Allocation &alloc, Paned* which)
 
        if (which == static_cast<Paned*> (&edit_pane)) {
 
-               if (done) {
+               if (done & Horizontal) {
                        return;
                }
 
-               if (!geometry || (prop = geometry->property ("edit-pane-pos")) == 0) {
+               if (!geometry || (prop = geometry->property ("edit-horizontal-pane-pos")) == 0) {
                        /* initial allocation is 90% to canvas, 10% to notebook */
                        pos = (int) floor (alloc.get_width() * 0.90f);
                        snprintf (buf, sizeof(buf), "%d", pos);
@@ -3730,20 +3562,40 @@ Editor::pane_allocation_handler (Allocation &alloc, Paned* which)
                        pos = atoi (prop->value());
                }
 
-               if ((done = GTK_WIDGET(edit_pane.gobj())->allocation.width > pos)) {
+               if (GTK_WIDGET(edit_pane.gobj())->allocation.width > pos) {
                        edit_pane.set_position (pos);
-                       pre_maximal_pane_position = pos;
+                       pre_maximal_horizontal_pane_position = pos;
+               }
+
+               done = (Pane) (done | Horizontal);
+               
+       } else if (which == static_cast<Paned*> (&editor_summary_pane)) {
+
+               if (done & Vertical) {
+                       return;
                }
+
+               if (!geometry || (prop = geometry->property ("edit-vertical-pane-pos")) == 0) {
+                       /* initial allocation is 90% to canvas, 10% to summary */
+                       pos = (int) floor (alloc.get_height() * 0.90f);
+                       snprintf (buf, sizeof(buf), "%d", pos);
+               } else {
+                       pos = atoi (prop->value());
+               }
+
+               if (GTK_WIDGET(editor_summary_pane.gobj())->allocation.height > pos) {
+                       editor_summary_pane.set_position (pos);
+                       pre_maximal_vertical_pane_position = pos;
+               }
+
+               done = (Pane) (done | Vertical);
        }
 }
 
 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);
        }
 }
@@ -3751,7 +3603,6 @@ 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);
        }
@@ -3788,12 +3639,35 @@ 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)
 {
@@ -3821,7 +3695,7 @@ 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);
 
@@ -3833,7 +3707,10 @@ 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&
@@ -3843,7 +3720,7 @@ Editor::playlist_selector () const
 }
 
 Evoral::MusicalTime
-Editor::get_grid_type_as_beats (bool& success, nframes64_t position)
+Editor::get_grid_type_as_beats (bool& success, framepos_t position)
 {
        success = true;
 
@@ -3852,29 +3729,55 @@ Editor::get_grid_type_as_beats (bool& success, nframes64_t position)
                return 1.0;
                break;
 
-       case SnapToAThirtysecondBeat:
+       case SnapToBeatDiv32:
                return 1.0/32.0;
                break;
-
-       case SnapToASixteenthBeat:
+       case SnapToBeatDiv28:
+               return 1.0/28.0;
+               break;
+       case SnapToBeatDiv24:
+               return 1.0/24.0;
+               break;
+       case SnapToBeatDiv20:
+               return 1.0/20.0;
+               break;
+       case SnapToBeatDiv16:
                return 1.0/16.0;
                break;
-
-       case SnapToAEighthBeat:
+       case SnapToBeatDiv14:
+               return 1.0/14.0;
+               break;
+       case SnapToBeatDiv12:
+               return 1.0/12.0;
+               break;
+       case SnapToBeatDiv10:
+               return 1.0/10.0;
+               break;
+       case SnapToBeatDiv8:
                return 1.0/8.0;
                break;
-
-       case SnapToAQuarterBeat:
+       case SnapToBeatDiv7:
+               return 1.0/7.0;
+               break;
+       case SnapToBeatDiv6:
+               return 1.0/6.0;
+               break;
+       case SnapToBeatDiv5:
+               return 1.0/5.0;
+               break;
+       case SnapToBeatDiv4:
                return 1.0/4.0;
                break;
-
-       case SnapToAThirdBeat:
+       case SnapToBeatDiv3:
                return 1.0/3.0;
                break;
+       case SnapToBeatDiv2:
+               return 1.0/2.0;
+               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;
 
@@ -3896,10 +3799,10 @@ Editor::get_grid_type_as_beats (bool& success, nframes64_t position)
        return 0.0;
 }
 
-nframes64_t
-Editor::get_nudge_distance (nframes64_t pos, nframes64_t& next)
+framecnt_t
+Editor::get_nudge_distance (framepos_t pos, framecnt_t& next)
 {
-       nframes64_t ret;
+       framecnt_t ret;
 
        ret = nudge_clock.current_duration (pos);
        next = ret + 1; /* XXXX fix me */
@@ -3907,19 +3810,10 @@ Editor::get_nudge_distance (nframes64_t pos, nframes64_t& next)
        return ret;
 }
 
-void
-Editor::end_location_changed (Location* location)
-{
-       ENSURE_GUI_THREAD (bind (mem_fun(*this, &Editor::end_location_changed), location));
-       //reset_scrolling_region ();
-       nframes64_t session_span = location->start() + (nframes64_t) floorf (current_page_frames() * 0.10f);
-       horizontal_adjustment.set_upper (session_span / frames_per_unit);
-}
-
 int
 Editor::playlist_deletion_dialog (boost::shared_ptr<Playlist> pl)
 {
-       ArdourDialog dialog ("playlist deletion dialog");
+       ArdourDialog dialog (_("Playlist Deletion"));
        Label  label (string_compose (_("Playlist %1 is currently unused.\n"
                                        "If left alone, no audio files used by it will be cleaned.\n"
                                        "If deleted, audio files used by it alone by will cleaned."),
@@ -3953,7 +3847,7 @@ Editor::playlist_deletion_dialog (boost::shared_ptr<Playlist> pl)
 }
 
 bool
-Editor::audio_region_selection_covers (nframes64_t where)
+Editor::audio_region_selection_covers (framepos_t where)
 {
        for (RegionSelection::iterator a = selection->regions.begin(); a != selection->regions.end(); ++a) {
                if ((*a)->region()->covers (where)) {
@@ -3985,8 +3879,8 @@ 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;
        }
@@ -3995,8 +3889,8 @@ 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;
        }
@@ -4005,6 +3899,10 @@ 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 ();
@@ -4024,52 +3922,79 @@ Editor::control_layout_scroll (GdkEventScroll* ev)
 }
 
 void
-Editor::session_state_saved (string snap_name)
+Editor::session_state_saved (string)
 {
-       ENSURE_GUI_THREAD (bind (mem_fun(*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);
+       _zoom_tearoff->set_visible (false);
 
-       pre_maximal_pane_position = edit_pane.get_position();
-       pre_maximal_editor_width = this->get_width();
+       pre_maximal_horizontal_pane_position = edit_pane.get_position ();
+       pre_maximal_vertical_pane_position = editor_summary_pane.get_position ();
+       pre_maximal_editor_width = this->get_width ();
+       pre_maximal_editor_height = this->get_height ();
 
-       if(post_maximal_pane_position == 0) {
-               post_maximal_pane_position = edit_pane.get_width();
+       if (post_maximal_horizontal_pane_position == 0) {
+               post_maximal_horizontal_pane_position = edit_pane.get_width();
        }
 
-       fullscreen();
+       if (post_maximal_vertical_pane_position == 0) {
+               post_maximal_vertical_pane_position = editor_summary_pane.get_height();
+       }
+       
+       fullscreen ();
 
-       if(post_maximal_editor_width) {
-               edit_pane.set_position (post_maximal_pane_position -
+       if (post_maximal_editor_width) {
+               edit_pane.set_position (post_maximal_horizontal_pane_position -
                        abs(post_maximal_editor_width - pre_maximal_editor_width));
        } else {
-               edit_pane.set_position (post_maximal_pane_position);
+               edit_pane.set_position (post_maximal_horizontal_pane_position);
+       }
+
+       if (post_maximal_editor_height) {
+               editor_summary_pane.set_position (post_maximal_vertical_pane_position -
+                       abs(post_maximal_editor_height - pre_maximal_editor_height));
+       } else {
+               editor_summary_pane.set_position (post_maximal_vertical_pane_position);
+       }
+
+       if (Config->get_keep_tearoffs()) {
+               _mouse_mode_tearoff->set_visible (true);
+               _tools_tearoff->set_visible (true);
+               _zoom_tearoff->set_visible (true);
        }
+
 }
 
 void
 Editor::restore_editing_space ()
 {
-       // user changed width of pane during fullscreen
+       // user changed width/height of panes during fullscreen
 
-       if(post_maximal_pane_position != edit_pane.get_position()) {
-               post_maximal_pane_position = edit_pane.get_position();
+       if (post_maximal_horizontal_pane_position != edit_pane.get_position()) {
+               post_maximal_horizontal_pane_position = edit_pane.get_position();
        }
 
+       if (post_maximal_vertical_pane_position != editor_summary_pane.get_position()) {
+               post_maximal_vertical_pane_position = editor_summary_pane.get_position();
+       }
+       
        unfullscreen();
 
-       mouse_mode_tearoff->set_visible (true);
-       tools_tearoff->set_visible (true);
+       _mouse_mode_tearoff->set_visible (true);
+       _tools_tearoff->set_visible (true);
+       _zoom_tearoff->set_visible (true);
        post_maximal_editor_width = this->get_width();
+       post_maximal_editor_height = this->get_height();
 
-       edit_pane.set_position (pre_maximal_pane_position + abs(this->get_width() - pre_maximal_editor_width));
+       edit_pane.set_position (pre_maximal_horizontal_pane_position + abs(this->get_width() - pre_maximal_editor_width));
+       editor_summary_pane.set_position (pre_maximal_vertical_pane_position + abs(this->get_height() - pre_maximal_editor_height));
 }
 
 /**
@@ -4083,8 +4008,8 @@ Editor::new_playlists (TimeAxisView* v)
 {
        begin_reversible_command (_("new playlists"));
        vector<boost::shared_ptr<ARDOUR::Playlist> > playlists;
-       session->get_playlists(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 ();
 }
 
@@ -4099,8 +4024,8 @@ Editor::copy_playlists (TimeAxisView* v)
 {
        begin_reversible_command (_("copy playlists"));
        vector<boost::shared_ptr<ARDOUR::Playlist> > playlists;
-       session->get_playlists(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 ();
 }
 
@@ -4114,8 +4039,8 @@ Editor::clear_playlists (TimeAxisView* v)
 {
        begin_reversible_command (_("clear playlists"));
        vector<boost::shared_ptr<ARDOUR::Playlist> > playlists;
-       session->get_playlists(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 ();
 }
 
@@ -4150,10 +4075,12 @@ 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)
+Editor::reset_x_origin (framepos_t frame)
 {
-       //cerr << "resetting x origin" << endl;
        queue_visual_change (frame);
 }
 
@@ -4170,9 +4097,8 @@ Editor::reset_zoom (double fpu)
 }
 
 void
-Editor::reposition_and_zoom (nframes64_t frame, double fpu)
+Editor::reposition_and_zoom (framepos_t frame, double fpu)
 {
-       //cerr << "Editor::reposition_and_zoom () 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
        reset_x_origin (frame);
        reset_zoom (fpu);
 
@@ -4206,10 +4132,11 @@ 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
@@ -4219,10 +4146,11 @@ 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
@@ -4287,7 +4215,7 @@ Editor::set_frames_per_unit (double fpu)
           of frames into an 800 pixel wide space.
        */
 
-       if (max_frames / fpu < 800.0) {
+       if (max_framepos / fpu < 800.0) {
                return;
        }
 
@@ -4301,39 +4229,22 @@ Editor::set_frames_per_unit (double fpu)
 void
 Editor::post_zoom ()
 {
-       nframes64_t cef = 0;
-
        // convert fpu to frame count
 
-       nframes64_t frames = (nframes64_t) floor (frames_per_unit * _canvas_width);
+       framepos_t frames = (framepos_t) floor (frames_per_unit * _canvas_width);
 
        if (frames_per_unit != zoom_range_clock.current_duration()) {
                zoom_range_clock.set (frames);
        }
 
        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);
                }
        }
 
-       leftmost_frame = (nframes64_t) floor (horizontal_adjustment.get_value() * frames_per_unit);
-
        ZoomChanged (); /* EMIT_SIGNAL */
 
-       reset_hscrollbar_stepping ();
-
-       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);
-
        //reset_scrolling_region ();
 
        if (playhead_cursor) {
@@ -4343,24 +4254,16 @@ Editor::post_zoom ()
        refresh_location_display();
        _summary->set_overlays_dirty ();
 
+       update_marker_labels ();
+
        instant_save ();
 }
 
 void
-Editor::queue_visual_change (nframes64_t where)
+Editor::queue_visual_change (framepos_t where)
 {
        pending_visual_change.add (VisualChange::TimeOrigin);
-
-       /* if we're moving beyond the end, make sure the upper limit of the horizontal adjustment
-          can reach.
-       */
-
-       if (where > session->current_end_frame()) {
-               horizontal_adjustment.set_upper ((where + current_page_frames()) / frames_per_unit);
-       }
-
        pending_visual_change.time_origin = where;
-
        ensure_visual_change_idle_handler ();
 }
 
@@ -4371,7 +4274,6 @@ Editor::queue_visual_change (double fpu)
        pending_visual_change.frames_per_unit = fpu;
 
        ensure_visual_change_idle_handler ();
-
 }
 
 void
@@ -4403,9 +4305,19 @@ Editor::idle_visual_changer ()
        VisualChange::Type p = pending_visual_change.pending;
        pending_visual_change.pending = (VisualChange::Type) 0;
 
-#ifdef FIX_THIS_FOR_V3
-       double last_time_origin = horizontal_adjustment.get_value();
-#endif
+       double const last_time_origin = horizontal_position ();
+
+       if (p & VisualChange::TimeOrigin) {
+               /* This is a bit of a hack, but set_frames_per_unit
+                  below will (if called) end up with the
+                  CrossfadeViews looking at Editor::leftmost_frame,
+                  and if we're changing origin and zoom in the same
+                  operation it will be the wrong value unless we
+                  update it here.
+               */
+
+               leftmost_frame = pending_visual_change.time_origin;
+       }
 
        if (p & VisualChange::ZoomLevel) {
                set_frames_per_unit (pending_visual_change.frames_per_unit);
@@ -4416,42 +4328,20 @@ Editor::idle_visual_changer ()
                update_tempo_based_rulers ();
        }
        if (p & VisualChange::TimeOrigin) {
-               horizontal_adjustment.set_value (pending_visual_change.time_origin / frames_per_unit);
+               set_horizontal_position (pending_visual_change.time_origin / frames_per_unit);
        }
        if (p & VisualChange::YOrigin) {
                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 */
-
-#ifdef FIX_THIS_FOR_V3
-       if (last_time_origin == horizontal_adjustment.get_value() ) {
+       if (last_time_origin == horizontal_position ()) {
                /* changed signal not emitted */
                update_fixed_rulers ();
                redisplay_tempo (true);
        }
-#endif
-
-       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
        pending_visual_change.idle_handler_id = -1;
        return 0; /* this is always a one-shot call */
 }
@@ -4463,7 +4353,7 @@ struct EditorOrderTimeAxisSorter {
 };
 
 void
-Editor::sort_track_selection (TrackSelection* sel)
+Editor::sort_track_selection (TrackViewList* sel)
 {
        EditorOrderTimeAxisSorter cmp;
 
@@ -4474,11 +4364,11 @@ Editor::sort_track_selection (TrackSelection* sel)
        }
 }
 
-nframes64_t
+framepos_t
 Editor::get_preferred_edit_position (bool ignore_playhead)
 {
        bool ignored;
-       nframes64_t where = 0;
+       framepos_t where = 0;
        EditPoint ep = _edit_point;
 
        if (entered_marker) {
@@ -4491,7 +4381,7 @@ Editor::get_preferred_edit_position (bool ignore_playhead)
 
        switch (ep) {
        case EditAtPlayhead:
-               where = session->audible_frame();
+               where = _session->audible_frame();
                break;
 
        case EditAtSelectedMarker:
@@ -4523,55 +4413,55 @@ Editor::get_preferred_edit_position (bool ignore_playhead)
 }
 
 void
-Editor::set_loop_range (nframes64_t start, nframes64_t end, string cmd)
+Editor::set_loop_range (framepos_t start, framepos_t end, string cmd)
 {
-       if (!session) return;
+       if (!_session) return;
 
        begin_reversible_command (cmd);
 
        Location* tll;
 
        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));
+               Location* loc = new Location (*_session, 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));
        } 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 ();
 }
 
 void
-Editor::set_punch_range (nframes64_t start, nframes64_t end, string cmd)
+Editor::set_punch_range (framepos_t start, framepos_t end, string cmd)
 {
-       if (!session) return;
+       if (!_session) return;
 
        begin_reversible_command (cmd);
 
        Location* tpl;
 
        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));
+               Location* loc = new Location (*_session, 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));
        }
        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 ();
@@ -4583,9 +4473,9 @@ 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, framepos_t where, const TrackViewList& ts) const
 {
-       const TrackSelection* tracks;
+       const TrackViewList* tracks;
 
        if (ts.empty()) {
                tracks = &track_views;
@@ -4593,16 +4483,16 @@ 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()));
+                                               (framepos_t) floor ( (double)where * tr->speed()));
 
                                for (Playlist::RegionList::iterator i = regions->begin(); i != regions->end(); ++i) {
                                        RegionView* rv = rtv->view()->find_view (*i);
@@ -4618,9 +4508,9 @@ 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, framepos_t where, const TrackViewList& ts) const
 {
-       const TrackSelection* tracks;
+       const TrackViewList* tracks;
 
        if (ts.empty()) {
                tracks = &track_views;
@@ -4628,16 +4518,16 @@ 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);
+                                        (framepos_t) floor ( (double)where * tr->speed()), max_framepos);
 
                                for (Playlist::RegionList::iterator i = regions->begin(); i != regions->end(); ++i) {
 
@@ -4654,44 +4544,74 @@ Editor::get_regions_after (RegionSelection& rs, nframes64_t where, const TrackSe
        }
 }
 
-/** Find all regions which are either:
- *      - selected or
- *      - the entered_regionview (if allow_entered == true) or
- *      - under the preferred edit position AND on a selected track, or on a track
- *        which is in the same active edit-enable route group as a selected region (if allow_edit_position == true)
+/** Get regions using the following conditions:
+ *    1.  If the edit point is `mouse':
+ *          if the mouse is over a selected region, or no region, return all selected regions.
+ *          if the mouse is over an unselected region, return just that region.
+ *    2.  For all other edit points:
+ *          return the selected regions AND those that are both under the edit position
+ *          AND on a selected track, or on a track which is in the same active edit-enabled route group
+ *          as a selected region.
+ *
+ *  The rationale here is that the mouse edit point is special in that its position describes
+ *  both a time and a track; the other edit modes only describe a time.
+ *
  *  @param rs Returned region list.
- *  @param allow_entered true to include the entered_regionview in the list.
  */
-void
-Editor::get_regions_for_action (RegionSelection& rs, bool allow_entered, bool allow_edit_position)
-{
-       /* Start with selected regions */
-       rs = selection->regions;
 
-       /* Add the entered_regionview, if requested */
-       if (allow_entered && entered_regionview) {
-               rs.add (entered_regionview);
+RegionSelection
+Editor::get_regions_from_selection_and_edit_point ()
+{
+       if (_edit_point == EditAtMouse) {
+               if (entered_regionview == 0 || selection->regions.contains (entered_regionview)) {
+                       return selection->regions;
+               } else {
+                       RegionSelection rs;
+                       rs.add (entered_regionview);
+                       return rs;
+               }
        }
 
-       if (allow_edit_position) {
+       /* We're using the edit point, but its not EditAtMouse */
 
-               TrackSelection tracks = selection->tracks;
+       /* Start with selected regions */
+       RegionSelection rs = selection->regions;
 
-               /* 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) {
+       TrackViewList tracks = selection->tracks;
 
-                       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()));
-                       }
+       /* 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->is_active() && g->is_edit()) {
+                       tracks.add (axis_views_from_routes (g->route_list()));
                }
-
+               
+       }
+       
+       if (!tracks.empty()) {
                /* now find regions that are at the edit position on those tracks */
-               nframes64_t const where = get_preferred_edit_position ();
+               framepos_t const where = get_preferred_edit_position ();
                get_regions_at (rs, where, tracks);
        }
+
+       return rs;
+}
+
+
+RegionSelection
+Editor::get_regions_from_selection_and_entered ()
+{
+       RegionSelection rs = selection->regions;
+       
+       if (rs.empty() && entered_regionview) {
+               rs.add (entered_regionview);
+       }
+
+       return rs;
 }
 
 void
@@ -4706,14 +4626,14 @@ 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);
                        }
 
@@ -4734,31 +4654,11 @@ 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 ();
 }
 
-void
-Editor::show_bundle_manager ()
-{
-       if (_bundle_manager == 0) {
-               _bundle_manager = new BundleManager (*session);
-       }
-
-       _bundle_manager->show ();
-}
-
-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]->show ();
-}
-
 void
 Editor::first_idle ()
 {
@@ -4766,7 +4666,7 @@ 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);
@@ -4786,8 +4686,8 @@ Editor::first_idle ()
        _have_idled = true;
 }
 
-static gboolean
-_idle_resizer (gpointer arg)
+gboolean
+Editor::_idle_resize (gpointer arg)
 {
        return ((Editor*)arg)->idle_resize ();
 }
@@ -4796,7 +4696,7 @@ 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;
        }
 
@@ -4811,7 +4711,7 @@ 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);
                }
        }
@@ -4821,8 +4721,8 @@ Editor::add_to_idle_resize (TimeAxisView* view, int32_t h)
        }
 
        /* clamp */
-       if (uint32_t (min_resulting) < TimeAxisView::hSmall) {
-               _pending_resize_amount += TimeAxisView::hSmall - min_resulting;
+       if (uint32_t (min_resulting) < TimeAxisView::preset_height (HeightSmall)) {
+               _pending_resize_amount += TimeAxisView::preset_height (HeightSmall) - min_resulting;
        }
 }
 
@@ -4835,13 +4735,14 @@ 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;
@@ -4852,9 +4753,15 @@ 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
@@ -4863,19 +4770,13 @@ Editor::region_view_added (RegionView *)
        _summary->set_dirty ();
 }
 
-void
-Editor::streamview_height_changed ()
-{
-       _summary->set_dirty ();
-}
-
 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;
@@ -4885,12 +4786,12 @@ 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);
@@ -4904,7 +4805,7 @@ 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;
@@ -4912,16 +4813,16 @@ 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();
                }
@@ -4931,10 +4832,7 @@ 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));
        }
 
        _routes->routes_added (new_views);
@@ -4949,68 +4847,88 @@ 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));
+       if (_session && _session->deletion_in_progress()) {
+               /* the situation is under control */
+               return;
+       }
 
-       TrackViewList::iterator i;
+       ENSURE_GUI_THREAD (*this, &Editor::timeaxisview_deleted, tv);
 
-       boost::shared_ptr<Route> route;
        RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (tv);
-       if (rtav) {
-               route = rtav->route ();
-       }
-               
-       TimeAxisView* next_tv = 0;
+       
+       _routes->route_removed (tv);
 
        if (tv == entered_track) {
                entered_track = 0;
        }
 
-       if ((i = find (track_views.begin(), track_views.end(), tv)) != track_views.end()) {
+       TimeAxisView::Children c = tv->get_child_list ();
+       for (TimeAxisView::Children::const_iterator i = c.begin(); i != c.end(); ++i) {
+               if (entered_track == i->get()) {
+                       entered_track = 0;
+               }
+       }
 
-               i = track_views.erase (i);
+       /* remove it from the list of track views */
 
-               if (track_views.empty()) {
-                       next_tv = 0;
-               } else if (i == track_views.end()) {
-                       next_tv = track_views.front();
-               } else {
-                      next_tv = (*i);
-               }
+       TrackViewList::iterator i;
+
+       if ((i = find (track_views.begin(), track_views.end(), tv)) != track_views.end()) {
+               i = track_views.erase (i);
        }
 
+       /* update whatever the current mixer strip is displaying, if revelant */
+
+       boost::shared_ptr<Route> route;
+
+       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
-Editor::hide_track_in_display (TimeAxisView& tv, bool /*temponly*/)
+Editor::hide_track_in_display (TimeAxisView* tv, bool /*temponly*/)
 {
-       RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (&tv);
+       RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (tv);
 
        if (rtv && current_mixer_strip && (rtv->route() == current_mixer_strip->route())) {
                // this will hide the mixer strip
-               set_selected_mixer_strip (tv);
+               set_selected_mixer_strip (*tv);
        }
 
-       _routes->hide_track_in_display (tv);
+       _routes->hide_track_in_display (*tv);
 }
 
 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 ();
@@ -5026,12 +4944,13 @@ Editor::foreach_time_axis_view (sigc::slot<void,TimeAxisView&> theslot)
        }
 }
 
+/** Find a RouteTimeAxisView by the ID of its route */
 RouteTimeAxisView*
-Editor::get_route_view_by_id (PBD::ID& id)
+Editor::get_route_view_by_route_id (PBD::ID& id) const
 {
        RouteTimeAxisView* v;
 
-       for(TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
+       for (TrackViewList::const_iterator i = track_views.begin(); i != track_views.end(); ++i) {
                if((v = dynamic_cast<RouteTimeAxisView*>(*i)) != 0) {
                        if(v->route()->id() == id) {
                                return v;
@@ -5045,7 +4964,7 @@ 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);
 }
 
@@ -5055,18 +4974,18 @@ 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;
 }
 
@@ -5078,27 +4997,43 @@ 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::step_edit_status_change (bool yn)
+{
+        if (yn) {
+                start_step_editing ();
+        } else {
+                stop_step_editing ();
+        }
 }
 
 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
@@ -5119,3 +5054,339 @@ Editor::check_step_edit ()
 
        return true; // do it again, till we stop
 }
+
+bool
+Editor::horizontal_scroll_left_press ()
+{
+       ++_scroll_callbacks;
+       
+       if (_scroll_connection.connected() && _scroll_callbacks < 5) {
+               /* delay the first auto-repeat */
+               return true;
+       }
+               
+       double x = leftmost_position() - current_page_frames() / 5;
+       if (x < 0) {
+               x = 0;
+       }
+       
+       reset_x_origin (x);
+
+       /* do hacky auto-repeat */
+       if (!_scroll_connection.connected ()) {
+               _scroll_connection = Glib::signal_timeout().connect (sigc::mem_fun (*this, &Editor::horizontal_scroll_left_press), 100);
+               _scroll_callbacks = 0;
+       }
+
+       return true;
+}
+
+void
+Editor::horizontal_scroll_left_release ()
+{
+       _scroll_connection.disconnect ();
+}
+
+bool
+Editor::horizontal_scroll_right_press ()
+{
+       ++_scroll_callbacks;
+       
+       if (_scroll_connection.connected() && _scroll_callbacks < 5) {
+               /* delay the first auto-repeat */
+               return true;
+       }
+
+       reset_x_origin (leftmost_position() + current_page_frames() / 5);
+
+       /* do hacky auto-repeat */
+       if (!_scroll_connection.connected ()) {
+               _scroll_connection = Glib::signal_timeout().connect (sigc::mem_fun (*this, &Editor::horizontal_scroll_right_press), 100);
+               _scroll_callbacks = 0;
+       }
+
+       return true;
+}
+
+void
+Editor::horizontal_scroll_right_release ()
+{
+       _scroll_connection.disconnect ();
+}
+
+/** Queue a change for the Editor viewport x origin to follow the playhead */
+void
+Editor::reset_x_origin_to_follow_playhead ()
+{
+       framepos_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 */
+                               framepos_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 */
+
+       framepos_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
+        *     a visual glitch.
+        * 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;
+                        set_horizontal_position (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();
+       }
+}
+
+void
+Editor::change_region_layering_order ()
+{
+       framepos_t const position = get_preferred_edit_position ();
+       
+        if (!clicked_routeview) {
+                if (layering_order_editor) {
+                        layering_order_editor->hide ();
+                }
+               return;
+       }
+
+        boost::shared_ptr<Track> track = boost::dynamic_pointer_cast<Track> (clicked_routeview->route());
+
+        if (!track) {
+                return;
+        }
+
+       boost::shared_ptr<Playlist> pl = track->playlist();
+
+       if (!pl) {
+                return;
+        }
+                
+        if (layering_order_editor == 0) {
+                layering_order_editor = new RegionLayeringOrderEditor(*this);
+        }
+
+        layering_order_editor->set_context (clicked_routeview->name(), _session, pl, position);
+        layering_order_editor->maybe_present ();
+}
+
+void
+Editor::update_region_layering_order_editor ()
+{
+       if (layering_order_editor && layering_order_editor->is_visible ()) {
+               change_region_layering_order ();
+       }
+}
+
+void
+Editor::setup_fade_images ()
+{
+       _fade_in_images[FadeLinear] = new Gtk::Image (get_icon_path (X_("crossfade-in-linear")));
+       _fade_in_images[FadeFast] = new Gtk::Image (get_icon_path (X_("crossfade-in-short-cut")));
+       _fade_in_images[FadeLogB] = new Gtk::Image (get_icon_path (X_("crossfade-in-slow-cut")));
+       _fade_in_images[FadeLogA] = new Gtk::Image (get_icon_path (X_("crossfade-in-fast-cut")));
+       _fade_in_images[FadeSlow] = new Gtk::Image (get_icon_path (X_("crossfade-in-long-cut")));
+
+       _fade_out_images[FadeLinear] = new Gtk::Image (get_icon_path (X_("crossfade-out-linear")));
+       _fade_out_images[FadeFast] = new Gtk::Image (get_icon_path (X_("crossfade-out-short-cut")));
+       _fade_out_images[FadeLogB] = new Gtk::Image (get_icon_path (X_("crossfade-out-slow-cut")));
+       _fade_out_images[FadeLogA] = new Gtk::Image (get_icon_path (X_("crossfade-out-fast-cut")));
+       _fade_out_images[FadeSlow] = new Gtk::Image (get_icon_path (X_("crossfade-out-long-cut")));
+}
+
+
+/** @return Gtk::manage()d menu item for a given action from `editor_actions' */
+Gtk::MenuItem&
+Editor::action_menu_item (std::string const & name)
+{
+       Glib::RefPtr<Action> a = editor_actions->get_action (name);
+       assert (a);
+       
+       return *manage (a->create_menu_item ());
+}
+