Relent a bit and make adding a route to a group which already contains that group...
[ardour.git] / gtk2_ardour / editor.cc
index cd1b9e4b7c613e00bf2c90dc42e2ca3f69efdb2e..3c7bd3f37c7e2373d4c3d914c5c7d5421c41a7f8 100644 (file)
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2000-2007 Paul Davis 
+    Copyright (C) 2000-2009 Paul Davis
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
 
 /* Note: public Editor methods are documented in public_editor.h */
 
+#define __STDC_LIMIT_MACROS 1
+#include <stdint.h>
 #include <unistd.h>
 #include <cstdlib>
 #include <cmath>
 #include <string>
 #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 <pbd/convert.h>
-#include <pbd/error.h>
-#include <pbd/enumwriter.h>
-#include <pbd/memento_command.h>
+#include "pbd/convert.h"
+#include "pbd/error.h"
+#include "pbd/enumwriter.h"
+#include "pbd/memento_command.h"
+#include "pbd/unknown_type.h"
 
 #include <glibmm/miscutils.h>
 #include <gtkmm/image.h>
 #include <gtkmm2ext/utils.h>
 #include <gtkmm2ext/window_title.h>
 #include <gtkmm2ext/choice.h>
+#include <gtkmm2ext/cell_renderer_pixbuf_toggle.h>
+
+#include "ardour/audio_diskstream.h"
+#include "ardour/audio_track.h"
+#include "ardour/audioplaylist.h"
+#include "ardour/audioregion.h"
+#include "ardour/location.h"
+#include "ardour/midi_region.h"
+#include "ardour/plugin_manager.h"
+#include "ardour/profile.h"
+#include "ardour/route_group.h"
+#include "ardour/session_directory.h"
+#include "ardour/session_route.h"
+#include "ardour/session_state_utils.h"
+#include "ardour/tempo.h"
+#include "ardour/utils.h"
+#include "ardour/session_playlists.h"
+
+#include "control_protocol/control_protocol.h"
 
-#include <ardour/audio_track.h>
-#include <ardour/audio_diskstream.h>
-#include <ardour/plugin_manager.h>
-#include <ardour/location.h>
-#include <ardour/audioplaylist.h>
-#include <ardour/audioregion.h>
-#include <ardour/region.h>
-#include <ardour/session_route.h>
-#include <ardour/tempo.h>
-#include <ardour/utils.h>
-
-#include <control_protocol/control_protocol.h>
-
-#include "ardour_ui.h"
 #include "editor.h"
 #include "keyboard.h"
 #include "marker.h"
 #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 "canvas_impl.h"
 #include "actions.h"
+#include "sfdb_ui.h"
 #include "gui_thread.h"
-
-#ifdef FFT_ANALYSIS
+#include "simpleline.h"
+#include "rhythm_ferret.h"
+#include "actions.h"
+#include "tempo_lines.h"
 #include "analysis_window.h"
-#endif
+#include "bundle_manager.h"
+#include "global_port_matrix.h"
+#include "editor_drag.h"
+#include "editor_group_tabs.h"
+#include "automation_time_axis.h"
+#include "editor_routes.h"
+#include "midi_time_axis.h"
+#include "mixer_strip.h"
+#include "editor_route_groups.h"
+#include "editor_regions.h"
+#include "editor_locations.h"
+#include "editor_snapshots.h"
 
 #include "i18n.h"
 
 #endif
 
 using namespace std;
-using namespace sigc;
 using namespace ARDOUR;
 using namespace PBD;
 using namespace Gtk;
@@ -98,17 +130,17 @@ 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_("None"),
        N_("CD Frames"),
-       N_("SMPTE Frames"),
-       N_("SMPTE Seconds"),
-       N_("SMPTE Minutes"),
+       N_("Timecode Frames"),
+       N_("Timecode Seconds"),
+       N_("Timecode Minutes"),
        N_("Seconds"),
        N_("Minutes"),
        N_("Beats/32"),
@@ -119,7 +151,6 @@ static const gchar *_snap_type_strings[] = {
        N_("Beats"),
        N_("Bars"),
        N_("Marks"),
-       N_("Edit Cursor"),
        N_("Region starts"),
        N_("Region ends"),
        N_("Region syncs"),
@@ -128,19 +159,40 @@ static const gchar *_snap_type_strings[] = {
 };
 
 static const gchar *_snap_mode_strings[] = {
-       N_("Normal"),
+       N_("No Grid"),
+       N_("Grid"),
        N_("Magnetic"),
        0
 };
 
+static const gchar *_edit_point_strings[] = {
+       N_("Playhead"),
+       N_("Marker"),
+       N_("Mouse"),
+       0
+};
+
 static const gchar *_zoom_focus_strings[] = {
        N_("Left"),
        N_("Right"),
        N_("Center"),
-       N_("Play"),
-       N_("Edit"),
+       N_("Playhead"),
+       N_("Mouse"),
+       N_("Edit point"),
+       0
+};
+
+#ifdef USE_RUBBERBAND
+static const gchar *_rb_opt_strings[] = {
+       N_("Mushy"),
+       N_("Smooth"),
+       N_("Balanced multitimbral mixture"),
+       N_("Unpitched percussion with stable notes"),
+       N_("Crisp monophonic instrumental"),
+       N_("Unpitched solo percussion"),
        0
 };
+#endif
 
 /* Soundfile  drag-n-drop */
 
@@ -148,13 +200,18 @@ 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::note_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)
@@ -162,60 +219,49 @@ show_me_the_size (Requisition* r, const char* what)
        cerr << "size of " << what << " = " << r->width << " x " << r->height << endl;
 }
 
-void 
-check_adjustment (Gtk::Adjustment* adj)
-{
-       cerr << "CHANGE adj  = " 
-            << adj->get_lower () <<  ' '
-            << adj->get_upper () <<  ' '
-            << adj->get_value () <<  ' '
-            << adj->get_step_increment () <<  ' '
-            << adj->get_page_increment () <<  ' '
-            << adj->get_page_size () <<  ' '
-            << endl;
-
-}
-
 Editor::Editor ()
-       : 
-         /* time display buttons */
-
-         minsec_label (_("Mins:Secs")),
-         bbt_label (_("Bars:Beats")),
-         smpte_label (_("Timecode")),
-         frame_label (_("Frames")),
-         tempo_label (_("Tempo")),
-         meter_label (_("Meter")),
-         mark_label (_("Location Markers")),
-         range_mark_label (_("Range Markers")),
-         transport_mark_label (_("Loop/Punch Ranges")),
+       : _join_object_range_state (JOIN_OBJECT_RANGE_NONE)
 
-         edit_packer (3, 3, false),
+         /* time display buttons */
+       , minsec_label (_("Mins:Secs"))
+       , bbt_label (_("Bars:Beats"))
+       , timecode_label (_("Timecode"))
+       , frame_label (_("Samples"))
+       , tempo_label (_("Tempo"))
+       , meter_label (_("Meter"))
+       , mark_label (_("Location Markers"))
+       , range_mark_label (_("Range Markers"))
+       , transport_mark_label (_("Loop/Punch Ranges"))
+       , cd_mark_label (_("CD Markers"))
+       , edit_packer (4, 4, true)
 
          /* the values here don't matter: layout widgets
             reset them as needed.
          */
 
-         vertical_adjustment (0.0, 0.0, 10.0, 400.0),
-         horizontal_adjustment (0.0, 0.0, 20.0, 1200.0),
+       , vertical_adjustment (0.0, 0.0, 10.0, 400.0)
+       , horizontal_adjustment (0.0, 0.0, 20.0, 1200.0)
 
          /* tool bar related */
 
-         edit_cursor_clock (X_("editcursor"), false, X_("EditCursorClock"), true),
-         zoom_range_clock (X_("zoomrange"), false, X_("ZoomRangeClock"), true, true),
-         
-         toolbar_selection_clock_table (2,3),
-         
-         automation_mode_button (_("mode")),
-         global_automation_button (_("automation")),
+       , zoom_range_clock (X_("zoomrange"), false, X_("ZoomRangeClock"), true, false, true)
+
+       , toolbar_selection_clock_table (2,3)
+
+       , automation_mode_button (_("mode"))
+       , global_automation_button (_("automation"))
+
+       , midi_panic_button (_("Panic"))
 
 #ifdef WITH_CMT
-         image_socket_listener(0),
+       , image_socket_listener(0)
 #endif
 
          /* 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)
 
 {
        constructed = false;
@@ -224,68 +270,56 @@ Editor::Editor ()
 
        PublicEditor::_instance = this;
 
-       session = 0;
+       _have_idled = false;
 
-       selection = new Selection;
-       cut_buffer = new Selection;
-
-       selection->TimeChanged.connect (mem_fun(*this, &Editor::time_selection_changed));
-       selection->TracksChanged.connect (mem_fun(*this, &Editor::track_selection_changed));
-       selection->RegionsChanged.connect (mem_fun(*this, &Editor::region_selection_changed));
-       selection->PointsChanged.connect (mem_fun(*this, &Editor::point_selection_changed));
+       selection = new Selection (this);
+       cut_buffer = new Selection (this);
 
        clicked_regionview = 0;
        clicked_axisview = 0;
        clicked_routeview = 0;
        clicked_crossfadeview = 0;
        clicked_control_point = 0;
-       latest_regionview = 0;
        last_update_frame = 0;
-       drag_info.item = 0;
+       _drags = new DragManager (this);
        current_mixer_strip = 0;
        current_bbt_points = 0;
+       tempo_lines = 0;
+
+       snap_type_strings =  I18N (_snap_type_strings);
+       snap_mode_strings =  I18N (_snap_mode_strings);
+       zoom_focus_strings = I18N (_zoom_focus_strings);
+       edit_point_strings = I18N (_edit_point_strings);
+#ifdef USE_RUBBERBAND
+       rb_opt_strings = I18N (_rb_opt_strings);
+#endif
 
-       snap_type_strings = I18N (_snap_type_strings);
-       snap_mode_strings = I18N (_snap_mode_strings);
-       zoom_focus_strings = I18N(_zoom_focus_strings);
-
-       snap_type = SnapToFrame;
-       set_snap_to (snap_type);
-       snap_mode = SnapNormal;
-       set_snap_mode (snap_mode);
        snap_threshold = 5.0;
        bbt_beat_subdivision = 4;
-       canvas_width = 0;
-       canvas_height = 0;
+       _canvas_width = 0;
+       _canvas_height = 0;
+       last_autoscroll_x = 0;
+       last_autoscroll_y = 0;
        autoscroll_active = false;
        autoscroll_timeout_tag = -1;
        interthread_progress_window = 0;
+       logo_item = 0;
 
-#ifdef FFT_ANALYSIS
        analysis_window = 0;
-#endif
 
        current_interthread_info = 0;
        _show_measures = true;
-       _show_waveforms = true;
        _show_waveforms_recording = true;
-       first_action_message = 0;
-       export_dialog = 0;
        show_gain_after_trim = false;
-       ignore_route_list_reorder = false;
-       no_route_list_redisplay = false;
        verbose_cursor_on = true;
-       route_removal = false;
-       show_automatic_regions_in_region_list = true;
-       region_list_sort_type = (Editing::RegionListSortType) 0; 
+       last_item_entered = 0;
+       last_item_entered_n = 0;
+
        have_pending_keyboard_selection = false;
        _follow_playhead = true;
        _xfade_visibility = true;
        editor_ruler_menu = 0;
        no_ruler_shown_update = false;
-       edit_group_list_menu = 0;
-       route_list_menu = 0;
-       region_list_menu = 0;
        marker_menu = 0;
        start_end_marker_menu = 0;
        range_marker_menu = 0;
@@ -295,23 +329,34 @@ Editor::Editor ()
        new_transport_marker_menu = 0;
        editor_mixer_strip_width = Wide;
        show_editor_mixer_when_tracks_arrive = false;
+       region_edit_menu_split_multichannel_item = 0;
+       region_edit_menu_split_item = 0;
        temp_location = 0;
        leftmost_frame = 0;
-       ignore_mouse_mode_toggle = false;
        current_stepping_trackview = 0;
        entered_track = 0;
        entered_regionview = 0;
+       entered_marker = 0;
        clear_entered_track = false;
        _new_regionviews_show_envelope = false;
-       current_timestretch = 0;
-       in_edit_group_row_change = false;
-       last_canvas_frame = 0;
-       edit_cursor = 0;
+       current_timefx = 0;
        playhead_cursor = 0;
        button_release_can_deselect = true;
-       canvas_idle_queued = false;
        _dragging_playhead = false;
-       _dragging_hscrollbar = false;
+       _dragging_edit_point = false;
+       select_new_marker = false;
+       rhythm_ferret = 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;
+
+       scrubbing_direction = 0;
+
+       sfbrowser = 0;
 
        location_marker_color = ARDOUR_UI::config()->canvasvar_LocationMarker.get();
        location_range_color = ARDOUR_UI::config()->canvasvar_LocationRange.get();
@@ -319,343 +364,232 @@ Editor::Editor ()
        location_loop_color = ARDOUR_UI::config()->canvasvar_LocationLoop.get();
        location_punch_color = ARDOUR_UI::config()->canvasvar_LocationPunch.get();
 
-       range_marker_drag_rect = 0;
-       marker_drag_line = 0;
-       
-       set_mouse_mode (MouseObject, true);
+       _edit_point = EditAtMouse;
+       _internal_editing = false;
+       current_canvas_cursor = 0;
 
        frames_per_unit = 2048; /* too early to use reset_zoom () */
-       reset_hscrollbar_stepping ();
-       
+
        zoom_focus = ZoomFocusLeft;
        set_zoom_focus (ZoomFocusLeft);
-       zoom_range_clock.ValueChanged.connect (mem_fun(*this, &Editor::zoom_adjustment_changed));
-
-       initialize_rulers ();
-       initialize_canvas ();
-
-       edit_controls_vbox.set_spacing (0);
-       horizontal_adjustment.signal_value_changed().connect (mem_fun(*this, &Editor::canvas_horizontally_scrolled));
-       vertical_adjustment.signal_value_changed().connect (mem_fun(*this, &Editor::tie_vertical_scrolling));
-       
-       track_canvas.set_hadjustment (horizontal_adjustment);
-       track_canvas.set_vadjustment (vertical_adjustment);
-       time_canvas.set_hadjustment (horizontal_adjustment);
-
-       track_canvas.signal_map_event().connect (mem_fun (*this, &Editor::track_canvas_map_handler));
-       time_canvas.signal_map_event().connect (mem_fun (*this, &Editor::time_canvas_map_handler));
-       
-       controls_layout.add (edit_controls_vbox);
-       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.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.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 ();
-       setup_toolbar ();
-
-       edit_cursor_clock.ValueChanged.connect (mem_fun(*this, &Editor::edit_cursor_clock_changed));
-       
-       time_canvas_vbox.pack_start (*_ruler_separator, false, false);
-       time_canvas_vbox.pack_start (*minsec_ruler, false, false);
-       time_canvas_vbox.pack_start (*smpte_ruler, false, false);
-       time_canvas_vbox.pack_start (*frames_ruler, false, false);
-       time_canvas_vbox.pack_start (*bbt_ruler, false, false);
-       time_canvas_vbox.pack_start (time_canvas, true, true);
-       time_canvas_vbox.set_size_request (-1, (int)(timebar_height * visible_timebars) + 2);
+       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);
        bbt_label.set_alignment (1.0, 0.5);
        bbt_label.set_padding (5,0);
+       bbt_label.hide ();
+       bbt_label.set_no_show_all();
        minsec_label.set_name ("EditorTimeButton");
        minsec_label.set_size_request (-1, (int)timebar_height);
        minsec_label.set_alignment (1.0, 0.5);
        minsec_label.set_padding (5,0);
-       smpte_label.set_name ("EditorTimeButton");
-       smpte_label.set_size_request (-1, (int)timebar_height);
-       smpte_label.set_alignment (1.0, 0.5);
-       smpte_label.set_padding (5,0);
+       minsec_label.hide ();
+       minsec_label.set_no_show_all();
+       timecode_label.set_name ("EditorTimeButton");
+       timecode_label.set_size_request (-1, (int)timebar_height);
+       timecode_label.set_alignment (1.0, 0.5);
+       timecode_label.set_padding (5,0);
+       timecode_label.hide ();
+       timecode_label.set_no_show_all();
        frame_label.set_name ("EditorTimeButton");
        frame_label.set_size_request (-1, (int)timebar_height);
        frame_label.set_alignment (1.0, 0.5);
        frame_label.set_padding (5,0);
+       frame_label.hide ();
+       frame_label.set_no_show_all();
+
        tempo_label.set_name ("EditorTimeButton");
        tempo_label.set_size_request (-1, (int)timebar_height);
        tempo_label.set_alignment (1.0, 0.5);
        tempo_label.set_padding (5,0);
+       tempo_label.hide();
+       tempo_label.set_no_show_all();
        meter_label.set_name ("EditorTimeButton");
        meter_label.set_size_request (-1, (int)timebar_height);
        meter_label.set_alignment (1.0, 0.5);
        meter_label.set_padding (5,0);
+       meter_label.hide();
+       meter_label.set_no_show_all();
        mark_label.set_name ("EditorTimeButton");
        mark_label.set_size_request (-1, (int)timebar_height);
        mark_label.set_alignment (1.0, 0.5);
        mark_label.set_padding (5,0);
+       mark_label.hide();
+       mark_label.set_no_show_all();
+       cd_mark_label.set_name ("EditorTimeButton");
+       cd_mark_label.set_size_request (-1, (int)timebar_height);
+       cd_mark_label.set_alignment (1.0, 0.5);
+       cd_mark_label.set_padding (5,0);
+       cd_mark_label.hide();
+       cd_mark_label.set_no_show_all();
        range_mark_label.set_name ("EditorTimeButton");
        range_mark_label.set_size_request (-1, (int)timebar_height);
        range_mark_label.set_alignment (1.0, 0.5);
        range_mark_label.set_padding (5,0);
+       range_mark_label.hide();
+       range_mark_label.set_no_show_all();
        transport_mark_label.set_name ("EditorTimeButton");
        transport_mark_label.set_size_request (-1, (int)timebar_height);
        transport_mark_label.set_alignment (1.0, 0.5);
        transport_mark_label.set_padding (5,0);
-       
-       time_button_vbox.pack_start (minsec_label, false, false);
-       time_button_vbox.pack_start (smpte_label, false, false);
-       time_button_vbox.pack_start (frame_label, false, false);
-       time_button_vbox.pack_start (bbt_label, false, false);
-       time_button_vbox.pack_start (meter_label, false, false);
-       time_button_vbox.pack_start (tempo_label, false, false);
-       time_button_vbox.pack_start (mark_label, false, false);
+       transport_mark_label.hide();
+       transport_mark_label.set_no_show_all();
+
+       initialize_rulers ();
+       initialize_canvas ();
+       _summary = new EditorSummary (this);
+
+       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 (sigc::mem_fun(*this, &Editor::scroll_canvas_horizontally), false);
+       vertical_adjustment.signal_value_changed().connect (sigc::mem_fun(*this, &Editor::tie_vertical_scrolling), true);
+       track_canvas->signal_map_event().connect (sigc::mem_fun (*this, &Editor::track_canvas_map_handler));
+
+       HBox* h = manage (new HBox);
+       _group_tabs = new EditorGroupTabs (this);
+       h->pack_start (*_group_tabs, PACK_SHRINK);
+       h->pack_start (edit_controls_vbox);
+       controls_layout.add (*h);
+
+       ARDOUR_UI::instance()->tooltips().set_tip (*_group_tabs, _("Groups: context-click for possible operations"));
+
+       controls_layout.set_name ("EditControlsBase");
+       controls_layout.add_events (Gdk::SCROLL_MASK);
+       controls_layout.signal_scroll_event().connect (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 (sigc::mem_fun(*this, &Editor::edit_controls_button_release));
+       controls_layout_size_request_connection = controls_layout.signal_size_request().connect (sigc::mem_fun (*this, &Editor::controls_layout_size_request));
+
+       build_cursors ();
+
+       ArdourCanvas::Canvas* time_pad = manage(new ArdourCanvas::Canvas());
+       ArdourCanvas::SimpleLine* pad_line_1 = manage(new ArdourCanvas::SimpleLine(*time_pad->root(),
+                       0.0, 1.0, 100.0, 1.0));
+       pad_line_1->property_color_rgba() = 0xFF0000FF;
+       pad_line_1->show();
+       time_pad->show();
+
+       time_canvas_vbox.set_size_request (-1, (int)(timebar_height * visible_timebars) + 2);
+       time_canvas_vbox.set_size_request (-1, -1);
+
+       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 (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.set_name ("TimebarLabelBase");
-       time_button_event_box.signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_label_button_release));
-
-       time_button_frame.add(time_button_event_box);
-       time_button_frame.property_shadow_type() = Gtk::SHADOW_OUT;
+       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.) 
+       /* these enable us to have a dedicated window (for cursor setting, etc.)
           for the canvas areas.
        */
 
-       track_canvas_event_box.add (track_canvas);
+       track_canvas_event_box.add (*track_canvas);
 
        time_canvas_event_box.add (time_canvas_vbox);
        time_canvas_event_box.set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::POINTER_MOTION_MASK);
-       
+
        edit_packer.set_col_spacings (0);
        edit_packer.set_row_spacings (0);
        edit_packer.set_homogeneous (false);
        edit_packer.set_border_width (0);
        edit_packer.set_name ("EditorWindow");
-       
-       edit_packer.attach (edit_vscrollbar,         3, 4, 1, 2,    FILL,        FILL|EXPAND, 0, 0);
-
-       edit_packer.attach (time_button_frame,       0, 2, 0, 1,    FILL,        FILL, 0, 0);
-       edit_packer.attach (time_canvas_event_box,   2, 4, 0, 1,    FILL|EXPAND, FILL, 0, 0);
 
-       edit_packer.attach (controls_layout,         1, 2, 1, 2,    FILL,        FILL|EXPAND, 0, 0);
-       edit_packer.attach (track_canvas_event_box,  2, 3, 1, 2,    FILL|EXPAND, FILL|EXPAND, 0, 0);
-
-       edit_packer.attach (zoom_box,                1, 2, 2, 3,    FILL,         FILL, 0, 0);
-       edit_packer.attach (edit_hscrollbar,         2, 3, 2, 3,    FILL|EXPAND,  FILL, 0, 0);
+       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" */
+       edit_packer.attach (time_button_event_box,   1, 2, 1, 2,    FILL,        SHRINK, 0, 0);
+       /* the rulers */
+       edit_packer.attach (time_canvas_event_box,   2, 3, 0, 1,    FILL|EXPAND, FILL, 0, 0);
+       /* track controls */
+       edit_packer.attach (controls_layout,         0, 2, 2, 3,    FILL,        FILL|EXPAND, 0, 0);
+       /* main canvas */
+       edit_packer.attach (track_canvas_event_box,  2, 3, 1, 3,    FILL|EXPAND, FILL|EXPAND, 0, 0);
 
        bottom_hbox.set_border_width (2);
        bottom_hbox.set_spacing (3);
 
-       route_display_model = ListStore::create(route_display_columns);
-       route_list_display.set_model (route_display_model);
-       route_list_display.append_column (_("Show"), route_display_columns.visible);
-       route_list_display.append_column (_("Name"), route_display_columns.text);
-       route_list_display.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(0));
-       route_list_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
-       route_list_display.set_headers_visible (true);
-       route_list_display.set_name ("TrackListDisplay");
-       route_list_display.get_selection()->set_mode (SELECTION_NONE);
-       route_list_display.set_reorderable (true);
-       route_list_display.set_size_request (100,-1);
-
-       CellRendererToggle* route_list_visible_cell = dynamic_cast<CellRendererToggle*>(route_list_display.get_column_cell_renderer (0));
-       route_list_visible_cell->property_activatable() = true;
-       route_list_visible_cell->property_radio() = false;
-       
-       route_display_model->signal_row_deleted().connect (mem_fun (*this, &Editor::route_list_delete));
-       route_display_model->signal_row_changed().connect (mem_fun (*this, &Editor::route_list_change));
-
-       route_list_display.signal_button_press_event().connect (mem_fun (*this, &Editor::route_list_display_button_press), false);
-
-       route_list_scroller.add (route_list_display);
-       route_list_scroller.set_policy (POLICY_NEVER, POLICY_AUTOMATIC);
-
-       group_model = ListStore::create(group_columns);
-       edit_group_display.set_model (group_model);
-       edit_group_display.append_column (_("Name"), group_columns.text);
-       edit_group_display.append_column (_("Active"), group_columns.is_active);
-       edit_group_display.append_column (_("Show"), group_columns.is_visible);
-       edit_group_display.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(0));
-       edit_group_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
-       edit_group_display.get_column (2)->set_data (X_("colnum"), GUINT_TO_POINTER(2));
-       edit_group_display.get_column (0)->set_expand (true);
-       edit_group_display.get_column (1)->set_expand (false);
-       edit_group_display.get_column (2)->set_expand (false);
-       edit_group_display.set_headers_visible (true);
-
-       /* name is directly editable */
-
-       CellRendererText* name_cell = dynamic_cast<CellRendererText*>(edit_group_display.get_column_cell_renderer (0));
-       name_cell->property_editable() = true;
-       name_cell->signal_edited().connect (mem_fun (*this, &Editor::edit_group_name_edit));
-
-       /* use checkbox for the active + visible columns */
-
-       CellRendererToggle* active_cell = dynamic_cast<CellRendererToggle*>(edit_group_display.get_column_cell_renderer (1));
-       active_cell->property_activatable() = true;
-       active_cell->property_radio() = false;
-
-       active_cell = dynamic_cast<CellRendererToggle*>(edit_group_display.get_column_cell_renderer (1));
-       active_cell->property_activatable() = true;
-       active_cell->property_radio() = false;
-
-       group_model->signal_row_changed().connect (mem_fun (*this, &Editor::edit_group_row_change));
-
-       edit_group_display.set_name ("EditGroupList");
-       edit_group_display.get_selection()->set_mode (SELECTION_SINGLE);
-       edit_group_display.set_headers_visible (true);
-       edit_group_display.set_reorderable (false);
-       edit_group_display.set_rules_hint (true);
-       edit_group_display.set_size_request (75, -1);
-
-       edit_group_display_scroller.add (edit_group_display);
-       edit_group_display_scroller.set_policy (POLICY_AUTOMATIC, POLICY_AUTOMATIC);
-
-       edit_group_display.signal_button_press_event().connect (mem_fun(*this, &Editor::edit_group_list_button_press_event), false);
-
-       VBox* edit_group_display_packer = manage (new VBox());
-       HBox* edit_group_display_button_box = manage (new HBox());
-       edit_group_display_button_box->set_homogeneous (true);
-
-       Button* edit_group_add_button = manage (new Button ());
-       Button* edit_group_remove_button = manage (new Button ());
-
-       Widget* w;
-
-       w = manage (new Image (Stock::ADD, ICON_SIZE_BUTTON));
-       w->show();
-       edit_group_add_button->add (*w);
-
-       w = manage (new Image (Stock::REMOVE, ICON_SIZE_BUTTON));
-       w->show();
-       edit_group_remove_button->add (*w);
-
-       edit_group_add_button->signal_clicked().connect (mem_fun (*this, &Editor::new_edit_group));
-       edit_group_remove_button->signal_clicked().connect (mem_fun (*this, &Editor::remove_selected_edit_group));
-       
-       edit_group_display_button_box->pack_start (*edit_group_add_button);
-       edit_group_display_button_box->pack_start (*edit_group_remove_button);
-
-       edit_group_display_packer->pack_start (edit_group_display_scroller, true, true);
-       edit_group_display_packer->pack_start (*edit_group_display_button_box, false, false);
-
-       region_list_display.set_size_request (100, -1);
-       region_list_display.set_name ("RegionListDisplay");
-
-       region_list_model = TreeStore::create (region_list_columns);
-       region_list_model->set_sort_func (0, mem_fun (*this, &Editor::region_list_sorter));
-       region_list_model->set_sort_column (0, SORT_ASCENDING);
-
-       region_list_display.set_model (region_list_model);
-       region_list_display.append_column (_("Regions"), region_list_columns.name);
-       region_list_display.set_headers_visible (false);
-
-       region_list_display.get_selection()->set_select_function (mem_fun (*this, &Editor::region_list_selection_filter));
-       
-       TreeViewColumn* tv_col = region_list_display.get_column(0);
-       CellRendererText* renderer = dynamic_cast<CellRendererText*>(region_list_display.get_column_cell_renderer (0));
-       tv_col->add_attribute(renderer->property_text(), region_list_columns.name);
-       tv_col->add_attribute(renderer->property_foreground_gdk(), region_list_columns.color_);
-       
-       region_list_display.get_selection()->set_mode (SELECTION_MULTIPLE);
-       region_list_display.add_object_drag (region_list_columns.region.index(), "regions");
-
-       /* setup DnD handling */
-       
-       list<TargetEntry> region_list_target_table;
-       
-       region_list_target_table.push_back (TargetEntry ("text/plain"));
-       region_list_target_table.push_back (TargetEntry ("text/uri-list"));
-       region_list_target_table.push_back (TargetEntry ("application/x-rootwin-drop"));
-       
-       region_list_display.add_drop_targets (region_list_target_table);
-       region_list_display.signal_drag_data_received().connect (mem_fun(*this, &Editor::region_list_display_drag_data_received));
-
-       region_list_scroller.add (region_list_display);
-       region_list_scroller.set_policy (POLICY_NEVER, POLICY_AUTOMATIC);
-
-       region_list_display.signal_key_press_event().connect (mem_fun(*this, &Editor::region_list_display_key_press));
-       region_list_display.signal_key_release_event().connect (mem_fun(*this, &Editor::region_list_display_key_release));
-       region_list_display.signal_button_press_event().connect (mem_fun(*this, &Editor::region_list_display_button_press), false);
-       region_list_display.signal_button_release_event().connect (mem_fun(*this, &Editor::region_list_display_button_release));
-       region_list_display.get_selection()->signal_changed().connect (mem_fun(*this, &Editor::region_list_selection_changed));
-       // region_list_display.signal_popup_menu().connect (bind (mem_fun (*this, &Editor::show_region_list_display_context_menu), 1, 0));
-       
-       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));
-
-       /* SNAPSHOTS */
-
-       snapshot_display_model = ListStore::create (snapshot_display_columns);
-       snapshot_display.set_model (snapshot_display_model);
-       snapshot_display.append_column (X_("snapshot"), snapshot_display_columns.visible_name);
-       snapshot_display.set_name ("SnapshotDisplay");
-       snapshot_display.set_size_request (75, -1);
-       snapshot_display.set_headers_visible (false);
-       snapshot_display.set_reorderable (false);
-       snapshot_display_scroller.add (snapshot_display);
-       snapshot_display_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
-
-       snapshot_display.get_selection()->signal_changed().connect (mem_fun(*this, &Editor::snapshot_display_selection_changed));
-       snapshot_display.signal_button_press_event().connect (mem_fun (*this, &Editor::snapshot_display_button_press), false);
+       _route_groups = new EditorRouteGroups (this);
+       _routes = new EditorRoutes (this);
+       _regions = new EditorRegions (this);
+       _snapshots = new EditorSnapshots (this);
+       _locations = new EditorLocations (this);
 
        Gtk::Label* nlabel;
 
        nlabel = manage (new Label (_("Regions")));
        nlabel->set_angle (-90);
-       the_notebook.append_page (region_list_scroller, *nlabel);
+       the_notebook.append_page (_regions->widget (), *nlabel);
        nlabel = manage (new Label (_("Tracks/Busses")));
        nlabel->set_angle (-90);
-       the_notebook.append_page (route_list_scroller, *nlabel);
+       the_notebook.append_page (_routes->widget (), *nlabel);
        nlabel = manage (new Label (_("Snapshots")));
        nlabel->set_angle (-90);
-       the_notebook.append_page (snapshot_display_scroller, *nlabel);
-       nlabel = manage (new Label (_("Edit Groups")));
+       the_notebook.append_page (_snapshots->widget (), *nlabel);
+       nlabel = manage (new Label (_("Route Groups")));
        nlabel->set_angle (-90);
-       the_notebook.append_page (*edit_group_display_packer, *nlabel);
-       nlabel = manage (new Label (_("Chunks")));
+       the_notebook.append_page (_route_groups->widget (), *nlabel);
+       nlabel = manage (new Label (_("Ranges & Marks")));
        nlabel->set_angle (-90);
-       the_notebook.append_page (named_selection_scroller, *nlabel);
+       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;
-       edit_pane.pack1 (edit_packer, true, true);
-       edit_pane.pack2 (the_notebook, false, true);
+
+       VPaned *editor_summary_pane = manage(new VPaned());
+       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_clicked().connect (sigc::mem_fun (*this, &Editor::horizontal_scroll_left));
+       Button* summary_arrows_left_right = manage (new Button);
+       summary_arrows_left_right->add (*manage (new Arrow (ARROW_RIGHT, SHADOW_NONE)));
+       summary_arrows_left_right->signal_clicked().connect (sigc::mem_fun (*this, &Editor::horizontal_scroll_right));
+       VBox* summary_arrows_left = manage (new VBox);
+       summary_arrows_left->pack_start (*summary_arrows_left_left);
+       summary_arrows_left->pack_start (*summary_arrows_left_right);
+
+       Button* summary_arrows_right_left = manage (new Button);
+       summary_arrows_right_left->add (*manage (new Arrow (ARROW_LEFT, SHADOW_NONE)));
+       summary_arrows_right_left->signal_clicked().connect (sigc::mem_fun (*this, &Editor::horizontal_scroll_left));
+       Button* summary_arrows_right_right = manage (new Button);
+       summary_arrows_right_right->add (*manage (new Arrow (ARROW_RIGHT, SHADOW_NONE)));
+       summary_arrows_right_right->signal_clicked().connect (sigc::mem_fun (*this, &Editor::horizontal_scroll_right));
+       VBox* summary_arrows_right = manage (new VBox);
+       summary_arrows_right->pack_start (*summary_arrows_right_left);
+       summary_arrows_right->pack_start (*summary_arrows_right_right);
+
+       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);
        
-       edit_pane.signal_size_allocate().connect (bind (mem_fun(*this, &Editor::pane_allocation_handler), static_cast<Paned*> (&edit_pane)));
+       editor_summary_pane->pack2 (_summary_hbox);
+
+       edit_pane.pack1 (*editor_summary_pane, true, true);
+       edit_pane.pack2 (the_notebook, false, true);
 
-       top_hbox.pack_start (toolbar_frame, true, true);
+       edit_pane.signal_size_allocate().connect (sigc::bind (sigc::mem_fun(*this, &Editor::pane_allocation_handler), static_cast<Paned*> (&edit_pane)));
+
+       top_hbox.pack_start (toolbar_frame, false, true);
 
        HBox *hbox = manage (new HBox);
        hbox->pack_start (edit_pane, true, true);
@@ -668,19 +602,32 @@ Editor::Editor ()
        set_name ("EditorWindow");
        add_accel_group (ActionManager::ui_manager->get_accel_group());
 
+       status_bar_hpacker.show ();
+
+       vpacker.pack_end (status_bar_hpacker, false, false);
        vpacker.pack_end (global_hpacker, true, true);
 
        /* register actions now so that set_state() can find them and set toggles/checks etc */
-       
+
        register_actions ();
-       
+
+       setup_toolbar ();
+       setup_midi_toolbar ();
+
+       _snap_type = SnapToBeat;
+       set_snap_to (_snap_type);
+       _snap_mode = SnapOff;
+       set_snap_mode (_snap_mode);
+       set_mouse_mode (MouseObject, true);
+       set_edit_point_preference (EditAtMouse, true);
+
        XMLNode* node = ARDOUR_UI::instance()->editor_settings();
-       set_state (*node);
+       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, ui_bind (&Editor::catch_vanishing_regionview, this, _1), gui_context());
 
        /* nudge stuff */
 
@@ -725,17 +672,26 @@ Editor::Editor ()
        add (vpacker);
        add_events (Gdk::KEY_PRESS_MASK|Gdk::KEY_RELEASE_MASK);
 
-       signal_configure_event().connect (mem_fun (*ARDOUR_UI::instance(), &ARDOUR_UI::configure_handler));
-       signal_delete_event().connect (mem_fun (*ARDOUR_UI::instance(), &ARDOUR_UI::exit_on_main_window_close));
+       signal_configure_event().connect (sigc::mem_fun (*ARDOUR_UI::instance(), &ARDOUR_UI::configure_handler));
+       signal_delete_event().connect (sigc::mem_fun (*ARDOUR_UI::instance(), &ARDOUR_UI::exit_on_main_window_close));
 
        /* allow external control surfaces/protocols to do various things */
 
-       ControlProtocol::ZoomToSession.connect (mem_fun (*this, &Editor::temporal_zoom_session));
-       ControlProtocol::ZoomIn.connect (bind (mem_fun (*this, &Editor::temporal_zoom_step), false));
-       ControlProtocol::ZoomOut.connect (bind (mem_fun (*this, &Editor::temporal_zoom_step), true));
-       ControlProtocol::ScrollTimeline.connect (mem_fun (*this, &Editor::control_scroll));
+       ControlProtocol::ZoomToSession.connect (*this, boost::bind (&Editor::temporal_zoom_session, this), gui_context());
+       ControlProtocol::ZoomIn.connect (*this, boost::bind (&Editor::temporal_zoom_step, this, false), gui_context());
+       ControlProtocol::ZoomOut.connect (*this, boost::bind (&Editor::temporal_zoom_step, this, true), gui_context());
+       ControlProtocol::ScrollTimeline.connect (*this, ui_bind (&Editor::control_scroll, this, _1), gui_context());
+       BasicUI::AccessAction.connect (*this, ui_bind (&Editor::access_action, this, _1, _2), gui_context());
+       
+       /* problematic: has to return a value and thus cannot be x-thread */
+
+       Session::AskAboutPlaylistDeletion.connect_same_thread (*this, boost::bind (&Editor::playlist_deletion_dialog, this, _1));
 
-       Config->ParameterChanged.connect (mem_fun (*this, &Editor::parameter_changed));
+       Config->ParameterChanged.connect (*this, ui_bind (&Editor::parameter_changed, this, _1), gui_context());
+
+       TimeAxisView::CatchDeletion.connect (*this, ui_bind (&Editor::timeaxisview_deleted, this, _1), gui_context());
+
+       _last_normalization_value = 0;
 
        constructed = true;
        instant_save ();
@@ -744,17 +700,21 @@ Editor::Editor ()
 Editor::~Editor()
 {
 #ifdef WITH_CMT
-       if(image_socket_listener)
-       {
+       if(image_socket_listener) {
                if(image_socket_listener->is_connected())
                {
                        image_socket_listener->close_connection() ;
                }
-               
+
                delete image_socket_listener ;
                image_socket_listener = 0 ;
        }
 #endif
+
+       delete _routes;
+       delete _route_groups;
+       delete track_canvas;
+       delete _drags;
 }
 
 void
@@ -771,6 +731,10 @@ Editor::catch_vanishing_regionview (RegionView *rv)
           audioregionview by itself.
        */
 
+       if (_drags->active() && _drags->have_item (rv->get_canvas_group()) && !_drags->ending()) {
+               _drags->abort ();
+       }
+
        if (clicked_regionview == rv) {
                clicked_regionview = 0;
        }
@@ -811,31 +775,30 @@ Editor::set_entered_track (TimeAxisView* tav)
 void
 Editor::show_window ()
 {
-       show_all ();
-       present ();
-       
-       /* re-hide editor list if necessary */
-       editor_list_button_toggled ();
+       if (! is_visible ()) {
+               show_all ();
 
-       /* now reset all audio_time_axis heights, because widgets might need
-          to be re-hidden
-       */
-       
-       TimeAxisView *tv;
-       
-       for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
-               tv = (static_cast<TimeAxisView*>(*i));
-               tv->reset_height ();
+               /* re-hide editor list if necessary */
+               editor_list_button_toggled ();
+
+               /* re-hide summary widget if necessary */
+               parameter_changed ("show-summary");
+
+               parameter_changed ("show-edit-group-tabs");
+
+               /* now reset all audio_time_axis heights, because widgets might need
+                  to be re-hidden
+               */
+
+               TimeAxisView *tv;
+
+               for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
+                       tv = (static_cast<TimeAxisView*>(*i));
+                       tv->reset_height ();
+               }
        }
-}
 
-void
-Editor::tie_vertical_scrolling ()
-{
-       double y1 = vertical_adjustment.get_value();
-       controls_layout.get_vadjustment()->set_value (y1);
-       playhead_cursor->set_y_axis(y1);
-       edit_cursor->set_y_axis(y1);
+       present ();
 }
 
 void
@@ -845,89 +808,124 @@ 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_cursor_clock_changed()
-{
-       if (edit_cursor->current_frame != edit_cursor_clock.current_time()) {
-               edit_cursor->set_position (edit_cursor_clock.current_time());
-       }
-}
-
-
 void
 Editor::zoom_adjustment_changed ()
 {
-       if (session == 0) {
+       if (_session == 0) {
                return;
        }
 
-       double fpu = zoom_range_clock.current_duration() / canvas_width;
+       double fpu = zoom_range_clock.current_duration() / _canvas_width;
 
        if (fpu < 1.0) {
                fpu = 1.0;
-               zoom_range_clock.set ((nframes_t) floor (fpu * canvas_width));
-       } else if (fpu > session->current_end_frame() / canvas_width) {
-               fpu = session->current_end_frame() / canvas_width;
-               zoom_range_clock.set ((nframes_t) floor (fpu * canvas_width));
+               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));
        }
-       
+
        temporal_zoom (fpu);
 }
 
 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;
        }
 
        double step = fraction * current_page_frames();
-       nframes_t target;
 
-       if ((fraction < 0.0f) && (session->transport_frame() < (nframes_t) fabs(step))) {
-               target = 0;
-       } else if ((fraction > 0.0f) && (max_frames - session->transport_frame() < step)) {
-               target = (max_frames - (current_page_frames()*2)); // allow room for slop in where the PH is on the screen
+       /*
+               _control_scroll_target is an optional<T>
+
+               it acts like a pointer to an nframes64_t, with
+               a operator conversion to boolean to check
+               that it has a value could possibly use
+               playhead_cursor->current_frame to store the
+               value and a boolean in the class to know
+               when it's out of date
+       */
+
+       if (!_control_scroll_target) {
+               _control_scroll_target = _session->transport_frame();
+               _dragging_playhead = true;
+       }
+
+       if ((fraction < 0.0f) && (*_control_scroll_target < (nframes64_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 {
-               target = (session->transport_frame() + (nframes_t) floor ((fraction * current_page_frames())));
+               *_control_scroll_target += (nframes64_t) floor (step);
        }
 
        /* move visuals, we'll catch up with it later */
 
-       playhead_cursor->set_position (target);
+       playhead_cursor->set_position (*_control_scroll_target);
+       UpdateAllTransportClocks (*_control_scroll_target);
 
-       if (target > (current_page_frames() / 2)) {
+       if (*_control_scroll_target > (current_page_frames() / 2)) {
                /* try to center PH in window */
-               reset_x_origin (target - (current_page_frames()/2));
+               reset_x_origin (*_control_scroll_target - (current_page_frames()/2));
        } else {
                reset_x_origin (0);
        }
 
-       /* cancel the existing */
+       /*
+               Now we do a timeout to actually bring the session to the right place
+               according to the playhead. This is to avoid reading disk buffers on every
+               call to control_scroll, which is driven by ScrollTimeline and therefore
+               probably by a control surface wheel which can generate lots of events.
+       */
+       /* cancel the existing timeout */
 
        control_scroll_connection.disconnect ();
 
-       /* add the next one */
+       /* add the next timeout */
 
-       control_scroll_connection = Glib::signal_timeout().connect (bind (mem_fun (*this, &Editor::deferred_control_scroll), target), 50);
+       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 (nframes_t target)
+Editor::deferred_control_scroll (nframes64_t /*target*/)
 {
-       session->request_locate (target);
+       _session->request_locate (*_control_scroll_target, _session->transport_rolling());
+       // reset for next stream
+       _control_scroll_target = boost::none;
+       _dragging_playhead = false;
        return false;
 }
 
+void
+Editor::access_action (std::string action_group, std::string action_item)
+{
+       if (!_session) {
+               return;
+       }
+
+       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() );
+
+       if (act) {
+               act->activate();
+       }
+
+
+}
+
 void
 Editor::on_realize ()
 {
@@ -938,8 +936,9 @@ Editor::on_realize ()
 void
 Editor::start_scrolling ()
 {
-       scroll_connection = ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect 
-               (mem_fun(*this, &Editor::update_current_screen));
+       scroll_connection = ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect
+               (sigc::mem_fun(*this, &Editor::update_current_screen));
+
 }
 
 void
@@ -949,38 +948,38 @@ Editor::stop_scrolling ()
 }
 
 void
-Editor::map_position_change (nframes_t frame)
+Editor::map_position_change (nframes64_t frame)
 {
-       ENSURE_GUI_THREAD (bind (mem_fun(*this, &Editor::map_position_change), frame));
+       ENSURE_GUI_THREAD (*this, &Editor::map_position_change, frame)
 
-       if (session == 0 || !_follow_playhead) {
+       if (_session == 0 || !_follow_playhead) {
                return;
        }
 
        center_screen (frame);
        playhead_cursor->set_position (frame);
-}      
+}
 
 void
-Editor::center_screen (nframes_t frame)
+Editor::center_screen (nframes64_t frame)
 {
-       double page = canvas_width * frames_per_unit;
+       double page = _canvas_width * frames_per_unit;
 
        /* if we're off the page, then scroll.
         */
-       
+
        if (frame < leftmost_frame || frame >= leftmost_frame + page) {
                center_screen_internal (frame, page);
        }
 }
 
 void
-Editor::center_screen_internal (nframes_t frame, float page)
+Editor::center_screen_internal (nframes64_t frame, float page)
 {
        page /= 2;
-               
+
        if (frame > page) {
-               frame -= (nframes_t) page;
+               frame -= (nframes64_t) page;
        } else {
                frame = 0;
        }
@@ -991,41 +990,36 @@ Editor::center_screen_internal (nframes_t frame, float page)
 void
 Editor::handle_new_duration ()
 {
-       ENSURE_GUI_THREAD (mem_fun (*this, &Editor::handle_new_duration));
-
-       nframes_t new_end = session->get_maximum_extent() + (nframes_t) floorf (current_page_frames() * 0.10f);
-                                 
-       if (new_end > last_canvas_frame) {
-               last_canvas_frame = new_end;
-               horizontal_adjustment.set_upper (last_canvas_frame / frames_per_unit);
-               reset_scrolling_region ();
+       if (!_session) {
+               return;
        }
 
-       horizontal_adjustment.set_value (leftmost_frame/frames_per_unit);
-}
+       ENSURE_GUI_THREAD (*this, &Editor::handle_new_duration)
+       nframes64_t new_end = _session->current_end_frame() + (nframes64_t) floorf (current_page_frames() * 0.10f);
 
-void
-Editor::update_title_s (const string & snap_name)
-{
-       ENSURE_GUI_THREAD(bind (mem_fun(*this, &Editor::update_title_s), snap_name));
-       
-       update_title ();
+       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 ()
 {
-       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) {
@@ -1039,151 +1033,155 @@ Editor::update_title ()
 }
 
 void
-Editor::connect_to_session (Session *t)
+Editor::set_session (Session *t)
 {
-       session = t;
+       SessionHandlePtr::set_session (t);
 
-       XMLNode* node = ARDOUR_UI::instance()->editor_settings();
-       set_state (*node);
+       if (!_session) {
+               return;
+       }
 
-       /* catch up with the playhead */
+       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);
 
-       session->request_locate (playhead_cursor->current_frame);
+       if (rhythm_ferret) {
+               rhythm_ferret->set_session (_session);
+       }
 
-       if (first_action_message) {
-               first_action_message->hide();
+       if (analysis_window) {
+               analysis_window->set_session (_session);
        }
 
-       update_title ();
+       if (sfbrowser) {
+               sfbrowser->set_session (_session);
+       }
+
+       compute_fixed_ruler_scale ();
+
+       /* there are never any selected regions at startup */
+
+       sensitize_the_right_region_actions (false);
+
+       XMLNode* node = ARDOUR_UI::instance()->editor_settings();
+       set_state (*node, Stateful::loading_state_version);
+
+       /* catch up with the playhead */
+
+       _session->request_locate (playhead_cursor->current_frame);
 
-       session->GoingAway.connect (mem_fun(*this, &Editor::session_going_away));
-       session->history().Changed.connect (mem_fun (*this, &Editor::history_changed));
+       update_title ();
 
        /* 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->RegionAdded.connect (mem_fun(*this, &Editor::handle_new_region)));
-       session_connections.push_back (session->RegionRemoved.connect (mem_fun(*this, &Editor::handle_region_removed)));
-       session_connections.push_back (session->DurationChanged.connect (mem_fun(*this, &Editor::handle_new_duration)));
-       session_connections.push_back (session->edit_group_added.connect (mem_fun(*this, &Editor::add_edit_group)));
-       session_connections.push_back (session->edit_group_removed.connect (mem_fun(*this, &Editor::edit_groups_changed)));
-       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->RegionHiddenChange.connect (mem_fun(*this, &Editor::region_hidden)));
-
-       session_connections.push_back (session->SMPTEOffsetChanged.connect (mem_fun(*this, &Editor::update_just_smpte)));
-
-       session_connections.push_back (session->tempo_map().StateChanged.connect (mem_fun(*this, &Editor::tempo_map_changed)));
-
-       edit_groups_changed ();
-
-       edit_cursor_clock.set_session (session);
-       zoom_range_clock.set_session (session);
-       _playlist_selector->set_session (session);
-       nudge_clock.set_session (session);
-
-#ifdef FFT_ANALYSIS
-       if (analysis_window != 0)
-               analysis_window->set_session (session);
-#endif
+       _session->TransportStateChange.connect (_session_connections, boost::bind (&Editor::map_transport_state, this), gui_context());
+       _session->PositionChanged.connect (_session_connections, ui_bind (&Editor::map_position_change, this, _1), gui_context());
+       _session->RouteAdded.connect (_session_connections, ui_bind (&Editor::handle_new_route, this, _1), gui_context());
+       _session->DurationChanged.connect (_session_connections, boost::bind (&Editor::handle_new_duration, this), gui_context());
+       _session->DirtyChanged.connect (_session_connections, boost::bind (&Editor::update_title, this), gui_context());
+       _session->TimecodeOffsetChanged.connect (_session_connections, boost::bind (&Editor::update_just_timecode, this), gui_context());
+       _session->tempo_map().StateChanged.connect (_session_connections, ui_bind (&Editor::tempo_map_changed, this, _1), gui_context());
+       _session->Located.connect (_session_connections, boost::bind (&Editor::located, this), gui_context());
+       _session->config.ParameterChanged.connect (_session_connections, ui_bind (&Editor::parameter_changed, this, _1), gui_context());
+       _session->StateSaved.connect (_session_connections, ui_bind (&Editor::session_state_saved, this, _1), gui_context());
+       _session->locations()->added.connect (_session_connections, ui_bind (&Editor::add_new_location, this, _1), gui_context());
+       _session->locations()->removed.connect (_session_connections, ui_bind (&Editor::location_gone, this, _1), gui_context());
+       _session->locations()->changed.connect (_session_connections, boost::bind (&Editor::refresh_location_display, this), gui_context());
+       _session->locations()->StateChanged.connect (_session_connections, ui_bind (&Editor::refresh_location_display_s, this, _1), gui_context());
+       _session->locations()->end_location()->changed.connect (_session_connections, ui_bind (&Editor::end_location_changed, this, _1), gui_context());
+       _session->history().Changed.connect (_session_connections, boost::bind (&Editor::history_changed, this), gui_context());
+
+       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);
+               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
+       }
+
+       playhead_cursor->canvas_item.show ();
 
-       Location* loc = session->locations()->auto_loop_location();
+       Location* loc = _session->locations()->auto_loop_location();
        if (loc == 0) {
-               loc = new Location (0, session->current_end_frame(), _("Loop"),(Location::Flags) (Location::IsAutoLoop | Location::IsHidden));
+               loc = new Location (0, _session->current_end_frame(), _("Loop"),(Location::Flags) (Location::IsAutoLoop | Location::IsHidden));
                if (loc->start() == loc->end()) {
                        loc->set_end (loc->start() + 1);
                }
-               session->locations()->add (loc, false);
-               session->set_auto_loop_location (loc);
+               _session->locations()->add (loc, false);
+               _session->set_auto_loop_location (loc);
        } else {
                // force name
                loc->set_name (_("Loop"));
        }
-       
-       loc = session->locations()->auto_punch_location();
+
+       loc = _session->locations()->auto_punch_location();
        if (loc == 0) {
-               loc = new Location (0, session->current_end_frame(), _("Punch"), (Location::Flags) (Location::IsAutoPunch | Location::IsHidden));
+               loc = new Location (0, _session->current_end_frame(), _("Punch"), (Location::Flags) (Location::IsAutoPunch | Location::IsHidden));
                if (loc->start() == loc->end()) {
                        loc->set_end (loc->start() + 1);
                }
-               session->locations()->add (loc, false);
-               session->set_auto_punch_location (loc);
+               _session->locations()->add (loc, false);
+               _session->set_auto_punch_location (loc);
        } else {
                // force name
                loc->set_name (_("Punch"));
        }
 
-       Config->map_parameters (mem_fun (*this, &Editor::parameter_changed));
-       
-       session->StateSaved.connect (mem_fun(*this, &Editor::session_state_saved));
-       
-       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));
+       boost::function<void (string)> pc (boost::bind (&Editor::parameter_changed, this, _1));
+       Config->map_parameters (pc);
+       _session->config.map_parameters (pc);
 
+       refresh_location_display ();
        handle_new_duration ();
 
-       redisplay_regions ();
-       redisplay_named_selections ();
-       redisplay_snapshots ();
-
-       initial_route_list_display ();
+       restore_ruler_visibility ();
+       //tempo_map_changed (Change (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);
        }
 
-       restore_ruler_visibility ();
-       //tempo_map_changed (Change (0));
-       session->tempo_map().apply_with_metrics (*this, &Editor::draw_metric_marks);
-
        start_scrolling ();
 
-       /* don't show master bus in a new session */
+       switch (_snap_type) {
+       case SnapToRegionStart:
+       case SnapToRegionEnd:
+       case SnapToRegionSync:
+       case SnapToRegionBoundary:
+               build_region_boundary_cache ();
+               break;
 
-       if (ARDOUR_UI::instance()->session_is_new ()) {
-
-               TreeModel::Children rows = route_display_model->children();
-               TreeModel::Children::iterator i;
-       
-               no_route_list_redisplay = true;
-               
-               for (i = rows.begin(); i != rows.end(); ++i) {
-                       TimeAxisView *tv =  (*i)[route_display_columns.tv];
-                       RouteTimeAxisView *rtv;
-                       
-                       if ((rtv = dynamic_cast<RouteTimeAxisView*>(tv)) != 0) {
-                               if (rtv->route()->is_master()) {
-                                       route_list_display.get_selection()->unselect (i);
-                               }
-                       }
-               }
-               
-               no_route_list_redisplay = false;
-               redisplay_route_list ();
-       }
+       default:
+               break;
+       }
 
        /* register for undo history */
+       _session->register_with_memento_command_factory(_id, this);
 
-       session->register_with_memento_command_factory(_id, this);
+       start_updating ();
 }
 
 void
 Editor::build_cursors ()
 {
        using namespace Gdk;
-       
+
        Gdk::Color mbg ("#000000" ); /* Black */
        Gdk::Color mfg ("#0000ff" ); /* Blue. */
 
@@ -1196,30 +1194,56 @@ Editor::build_cursors ()
 
        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);
+       }
+
+
        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);
+       }
+
        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);
-       note_cursor = new Gdk::Cursor (PENCIL);
+       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 */
@@ -1242,35 +1266,46 @@ 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());
-               
-               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)));
+
+               if (Profile->get_sae()) {
+                       items.push_back (MenuElem (_("Linear"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), AudioRegion::Linear)));
+                       items.push_back (MenuElem (_("Slowest"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), AudioRegion::Fast)));
+               } else {
+                       items.push_back (MenuElem (_("Linear"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), AudioRegion::Linear)));
+                       items.push_back (MenuElem (_("Slowest"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), AudioRegion::Fast)));
+                       items.push_back (MenuElem (_("Slow"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), AudioRegion::LogB)));
+                       items.push_back (MenuElem (_("Fast"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), AudioRegion::LogA)));
+                       items.push_back (MenuElem (_("Fastest"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_in_shape), AudioRegion::Slow)));
+               }
+
                break;
 
        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());
-               
-               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)));
+
+               if (Profile->get_sae()) {
+                       items.push_back (MenuElem (_("Linear"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), AudioRegion::Linear)));
+                       items.push_back (MenuElem (_("Slowest"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), AudioRegion::Slow)));
+               } else {
+                       items.push_back (MenuElem (_("Linear"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), AudioRegion::Linear)));
+                       items.push_back (MenuElem (_("Slowest"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), AudioRegion::Slow)));
+                       items.push_back (MenuElem (_("Slow"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), AudioRegion::LogA)));
+                       items.push_back (MenuElem (_("Fast"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), AudioRegion::LogB)));
+                       items.push_back (MenuElem (_("Fastest"), sigc::bind (sigc::mem_fun (*this, &Editor::set_fade_out_shape), AudioRegion::Fast)));
+               }
 
                break;
 
@@ -1284,28 +1319,193 @@ Editor::popup_fade_context_menu (int button, int32_t time, ArdourCanvas::Item* i
        fade_context_menu.popup (button, time);
 }
 
-/* Pop up the general track context menu for when the user clicks pretty much anywhere in a track or bus */
 void
-Editor::popup_track_context_menu (int button, int32_t time, nframes_t frame)
+Editor::popup_track_context_menu (int button, int32_t time, ItemType item_type, bool with_selection, nframes64_t frame)
+{
+       using namespace Menu_Helpers;
+       Menu* (Editor::*build_menu_function)(nframes64_t);
+       Menu *menu;
+
+       switch (item_type) {
+       case RegionItem:
+       case RegionViewName:
+       case RegionViewNameHighlight:
+               if (with_selection) {
+                       build_menu_function = &Editor::build_track_selection_context_menu;
+               } else {
+                       build_menu_function = &Editor::build_track_region_context_menu;
+               }
+               break;
+
+       case SelectionItem:
+               if (with_selection) {
+                       build_menu_function = &Editor::build_track_selection_context_menu;
+               } else {
+                       build_menu_function = &Editor::build_track_context_menu;
+               }
+               break;
+
+       case CrossfadeViewItem:
+               build_menu_function = &Editor::build_track_crossfade_context_menu;
+               break;
+
+       case StreamItem:
+               if (clicked_routeview->get_diskstream()) {
+                       build_menu_function = &Editor::build_track_context_menu;
+               } else {
+                       build_menu_function = &Editor::build_track_bus_context_menu;
+               }
+               break;
+
+       default:
+               /* probably shouldn't happen but if it does, we don't care */
+               return;
+       }
+
+       menu = (this->*build_menu_function)(frame);
+       menu->set_name ("ArdourContextMenu");
+
+       /* now handle specific situations */
+
+       switch (item_type) {
+       case RegionItem:
+       case RegionViewName:
+       case RegionViewNameHighlight:
+               if (!with_selection) {
+                       if (region_edit_menu_split_item) {
+                               if (clicked_regionview && clicked_regionview->region()->covers (get_preferred_edit_position())) {
+                                       ActionManager::set_sensitive (ActionManager::edit_point_in_region_sensitive_actions, true);
+                               } else {
+                                       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);
+                               } else {
+                                       // GTK2FIX see above
+                                       // region_edit_menu_split_multichannel_item->set_sensitive (false);
+                               }
+                       }*/
+               }
+               break;
+
+       case SelectionItem:
+               break;
+
+       case CrossfadeViewItem:
+               break;
+
+       case StreamItem:
+               break;
+
+       default:
+               /* probably shouldn't happen but if it does, we don't care */
+               return;
+       }
+
+       if (item_type != SelectionItem && clicked_routeview && clicked_routeview->audio_track()) {
+
+               /* Bounce to disk */
+
+               using namespace Menu_Helpers;
+               MenuList& edit_items  = menu->items();
+
+               edit_items.push_back (SeparatorElem());
+
+               switch (clicked_routeview->audio_track()->freeze_state()) {
+               case AudioTrack::NoFreeze:
+                       edit_items.push_back (MenuElem (_("Freeze"), sigc::mem_fun(*this, &Editor::freeze_route)));
+                       break;
+
+               case AudioTrack::Frozen:
+                       edit_items.push_back (MenuElem (_("Unfreeze"), sigc::mem_fun(*this, &Editor::unfreeze_route)));
+                       break;
+
+               case AudioTrack::UnFrozen:
+                       edit_items.push_back (MenuElem (_("Freeze"), sigc::mem_fun(*this, &Editor::freeze_route)));
+                       break;
+               }
+
+       }
+
+       if (item_type == StreamItem && clicked_routeview) {
+               clicked_routeview->build_underlay_menu(menu);
+       }
+
+       menu->popup (button, time);
+}
+
+Menu*
+Editor::build_track_context_menu (nframes64_t)
 {
-       build_track_context_menu (frame)->popup (button, time);
+       using namespace Menu_Helpers;
+
+       MenuList& edit_items = track_context_menu.items();
+       edit_items.clear();
+
+       add_dstream_context_items (edit_items);
+       return &track_context_menu;
 }
 
 Menu*
-Editor::build_track_context_menu (nframes_t frame)
+Editor::build_track_bus_context_menu (nframes64_t)
 {
        using namespace Menu_Helpers;
 
-       Menu* menu = manage (new Menu);
-       MenuList& edit_items = menu->items();
+       MenuList& edit_items = track_context_menu.items();
+       edit_items.clear();
+
+       add_bus_context_items (edit_items);
+       return &track_context_menu;
+}
+
+Menu*
+Editor::build_track_region_context_menu (nframes64_t frame)
+{
+       using namespace Menu_Helpers;
+       MenuList& edit_items  = track_region_context_menu.items();
        edit_items.clear();
 
-       /* Build the general `track' context menu, adding what is appropriate given
-          the current selection */
+       RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (clicked_axisview);
+
+       if (rtv) {
+               boost::shared_ptr<Diskstream> ds;
+               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;
+               }
+       }
+
+       add_dstream_context_items (edit_items);
+
+       return &track_region_context_menu;
+}
+
+Menu*
+Editor::build_track_crossfade_context_menu (nframes64_t frame)
+{
+       using namespace Menu_Helpers;
+       MenuList& edit_items  = track_crossfade_context_menu.items();
+       edit_items.clear ();
 
-       /* XXX: currently crossfades can't be selected, so we can't use the selection
-          to decide which crossfades to mention in the menu.  I believe this will
-          change at some point.  For now we have to use clicked_trackview to decide. */
        AudioTimeAxisView* atv = dynamic_cast<AudioTimeAxisView*> (clicked_axisview);
 
        if (atv) {
@@ -1315,7 +1515,9 @@ Editor::build_track_context_menu (nframes_t frame)
 
                if ((ds = atv->get_diskstream()) && ((pl = ds->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);
 
                        bool many = xfades.size() > 1;
@@ -1323,42 +1525,42 @@ Editor::build_track_context_menu (nframes_t frame)
                        for (AudioPlaylist::Crossfades::iterator i = xfades.begin(); i != xfades.end(); ++i) {
                                add_crossfade_context_items (atv->audio_view(), (*i), edit_items, many);
                        }
-               }
-       }       
-
-       if (!selection->time.empty()) {
-               add_selection_context_items (edit_items);
-       }
 
-       if (!selection->regions.empty()) {
-               add_region_context_items (edit_items);
+                       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;
+               }
        }
 
-       if (!selection->tracks.empty()) {
-               add_bus_or_audio_track_context_items (edit_items);
-       }
-       
-       menu->set_name ("ArdourContextMenu");
+       add_dstream_context_items (edit_items);
 
-       return menu;
+       return &track_crossfade_context_menu;
 }
 
-#ifdef FFT_ANALYSIS
 void
 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();
        }
 
        analysis_window->set_regionmode();
        analysis_window->analyze();
-       
+
        analysis_window->present();
 }
 
@@ -1368,25 +1570,37 @@ 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();
        }
 
        analysis_window->set_rangemode();
        analysis_window->analyze();
-       
+
        analysis_window->present();
 }
-#endif /* FFT_ANALYSIS */
 
+Menu*
+Editor::build_track_selection_context_menu (nframes64_t)
+{
+       using namespace Menu_Helpers;
+       MenuList& edit_items  = track_selection_context_menu.items();
+       edit_items.clear ();
+
+       add_selection_context_items (edit_items);
+       // edit_items.push_back (SeparatorElem());
+       // add_dstream_context_items (edit_items);
+
+       return &track_selection_context_menu;
+}
 
 /** Add context menu items relevant to crossfades.
  * @param edit_items List to add the items to.
  */
 void
-Editor::add_crossfade_context_items (AudioStreamView* view, boost::shared_ptr<Crossfade> xfade, Menu_Helpers::MenuList& edit_items, bool many)
+Editor::add_crossfade_context_items (AudioStreamView* /*view*/, boost::shared_ptr<Crossfade> xfade, Menu_Helpers::MenuList& edit_items, bool many)
 {
        using namespace Menu_Helpers;
        Menu     *xfade_menu = manage (new Menu);
@@ -1396,22 +1610,22 @@ Editor::add_crossfade_context_items (AudioStreamView* view, boost::shared_ptr<Cr
 
        if (xfade->active()) {
                str = _("Mute");
-       } else { 
+       } else {
                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) {
@@ -1442,148 +1656,237 @@ Editor::xfade_edit_right_region ()
        }
 }
 
-/** Add an element to a menu, settings its sensitivity.
- * @param m Menu to add to.
- * @param e Element to add.
- * @param s true to make sensitive, false to make insensitive
- */
-void
-Editor::add_item_with_sensitivity (Menu_Helpers::MenuList& m, Menu_Helpers::MenuElem e, bool s) const
-{
-       m.push_back (e);
-       if (!s) {
-               m.back().set_sensitive (false);
-       }
-}
-
-/** Add context menu items relevant to regions.
- * @param edit_items List to add the items to.
- */
 void
-Editor::add_region_context_items (Menu_Helpers::MenuList& edit_items)
+Editor::add_region_context_items (StreamView* sv, boost::shared_ptr<Region> region, Menu_Helpers::MenuList& edit_items)
 {
        using namespace Menu_Helpers;
-       Menu *region_menu = manage (new Menu);
-       MenuList& items = region_menu->items();
+       Gtk::MenuItem* foo_item;
+       Menu     *region_menu = manage (new Menu);
+       MenuList& items       = region_menu->items();
        region_menu->set_name ("ArdourContextMenu");
-       
-       items.push_back (MenuElem (_("Edit..."), 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)));
 
-       Menu* sync_point_menu = manage (new Menu);
-       MenuList& sync_point_items = sync_point_menu->items();
-       sync_point_menu->set_name("ArdourContextMenu");
-       
-       sync_point_items.push_back (MenuElem (_("Define"), mem_fun(*this, &Editor::set_region_sync_from_edit_cursor)));
-       sync_point_items.push_back (MenuElem (_("Remove"), mem_fun(*this, &Editor::remove_region_sync)));
+       boost::shared_ptr<AudioRegion> ar;
+       boost::shared_ptr<MidiRegion>  mr;
 
-       items.push_back (MenuElem (_("Sync points"), *sync_point_menu));
+       if (region) {
+               ar = boost::dynamic_pointer_cast<AudioRegion> (region);
+               mr = boost::dynamic_pointer_cast<MidiRegion> (region);
 
-       add_item_with_sensitivity (items, MenuElem (_("Audition"), mem_fun(*this, &Editor::audition_selected_region)), selection->regions.size() == 1);
-       
-       add_item_with_sensitivity (items, MenuElem (_("Export"), mem_fun(*this, &Editor::export_region)), selection->regions.size() == 1);
+               /* when this particular menu pops up, make the relevant region
+                  become selected.
+               */
 
-       items.push_back (MenuElem (_("Bounce"), mem_fun(*this, &Editor::bounce_region_selection)));
+               region_menu->signal_map_event().connect (
+                       sigc::bind (sigc::mem_fun(*this, &Editor::set_selected_regionview_from_map_event), sv, boost::weak_ptr<Region>(region)));
 
-#ifdef FFT_ANALYSIS
-       items.push_back (MenuElem (_("Analyze region"), mem_fun(*this, &Editor::analyze_region_selection)));
-#endif
+               items.push_back (MenuElem (_("Rename..."), sigc::mem_fun(*this, &Editor::rename_region)));
+               if (mr && internal_editing()) {
+                       items.push_back (MenuElem (_("List editor..."), sigc::mem_fun(*this, &Editor::show_midi_list_editor)));
+               } else {
+                       items.push_back (MenuElem (_("Region Properties..."), sigc::mem_fun(*this, &Editor::edit_region)));
+               }
+       }
 
+       items.push_back (MenuElem (_("Raise to Top Layer"), sigc::mem_fun(*this, &Editor::raise_region_to_top)));
+       items.push_back (MenuElem (_("Lower to Bottom Layer"), sigc::mem_fun  (*this, &Editor::lower_region_to_bottom)));
+       items.push_back (SeparatorElem());
+       items.push_back (MenuElem (_("Define Sync Point"), sigc::mem_fun(*this, &Editor::set_region_sync_from_edit_point)));
+       if (_edit_point == EditAtMouse) {
+               items.back ().set_sensitive (false);
+       }
+       items.push_back (MenuElem (_("Remove Sync Point"), sigc::mem_fun(*this, &Editor::remove_region_sync)));
        items.push_back (SeparatorElem());
 
-       items.push_back (MenuElem (_("Lock"), bind (mem_fun (*this, &Editor::set_region_lock), true)));
-       items.push_back (MenuElem (_("Unlock"), bind (mem_fun (*this, &Editor::set_region_lock), false)));
-       items.push_back (MenuElem (_("Lock Position"), bind (mem_fun (*this, &Editor::set_region_position_lock), true)));
-       items.push_back (MenuElem (_("Unlock Position"), bind (mem_fun (*this, &Editor::set_region_position_lock), false)));
-       items.push_back (MenuElem (_("Mute"), bind (mem_fun (*this, &Editor::set_region_mute), true)));
-       items.push_back (MenuElem (_("Unmute"), bind (mem_fun (*this, &Editor::set_region_mute), false)));
-       items.push_back (MenuElem (_("Opaque"), bind (mem_fun (*this, &Editor::set_region_opaque), true)));
-       items.push_back (MenuElem (_("Transparent"), bind (mem_fun (*this, &Editor::set_region_opaque), false)));
-
-       /* We allow "Original position" if at least one region is not at its
-          natural position 
-       */
-       RegionSelection::iterator i = selection->regions.begin();
-       while (i != selection->regions.end() && (*i)->region()->at_natural_position() == true) {
-               ++i;
+       items.push_back (MenuElem (_("Audition"), sigc::mem_fun(*this, &Editor::play_selected_region)));
+       items.push_back (MenuElem (_("Export"), sigc::mem_fun(*this, &Editor::export_region)));
+       items.push_back (MenuElem (_("Bounce"), sigc::mem_fun(*this, &Editor::bounce_region_selection)));
+
+       if (ar) {
+               items.push_back (MenuElem (_("Spectral Analysis"), sigc::mem_fun(*this, &Editor::analyze_region_selection)));
        }
 
-       add_item_with_sensitivity (items, MenuElem (_("Original position"), mem_fun(*this, &Editor::naturalize)), i != selection->regions.end());
-       
        items.push_back (SeparatorElem());
 
-       /* Find out if we have a selected audio region */
-       i = selection->regions.begin();
-       while (i != selection->regions.end() && boost::dynamic_pointer_cast<AudioRegion>((*i)->region()) == 0) {
-               ++i;
+       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();
        }
-       bool const have_selected_audio_region = (i != selection->regions.end());
+       region_lock_item->signal_activate().connect (sigc::mem_fun(*this, &Editor::toggle_region_lock));
 
-       if (have_selected_audio_region) {
+       items.push_back (CheckMenuElem (_("Glue to Bars and Beats")));
+       CheckMenuItem* bbt_glue_item = static_cast<CheckMenuItem*>(&items.back());
 
-               Menu* envelopes_menu = manage (new Menu);
-               MenuList& envelopes_items = envelopes_menu->items();
-               envelopes_menu->set_name ("ArdourContextMenu");
+       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;
+       }
 
-               envelopes_items.push_back (MenuElem (_("Reset"), mem_fun(*this, &Editor::reset_region_gain_envelopes)));
-               envelopes_items.push_back (MenuElem (_("Visible"), bind (mem_fun (*this, &Editor::set_gain_envelope_visibility), true)));
-               envelopes_items.push_back (MenuElem (_("Invisible"), bind (mem_fun (*this, &Editor::set_gain_envelope_visibility), false)));
-               envelopes_items.push_back (MenuElem (_("Active"), bind (mem_fun (*this, &Editor::set_gain_envelope_active), true)));
-               envelopes_items.push_back (MenuElem (_("Inactive"), bind (mem_fun (*this, &Editor::set_gain_envelope_active), false)));
+       bbt_glue_item->signal_activate().connect (sigc::bind (sigc::mem_fun (*this, &Editor::set_region_lock_style), Region::MusicTime));
 
-               items.push_back (MenuElem (_("Envelopes"), *envelopes_menu));
-               
-               items.push_back (MenuElem (_("Denormalize"), mem_fun (*this, &Editor::denormalize_regions)));
-               items.push_back (MenuElem (_("Normalize"), mem_fun (*this, &Editor::normalize_regions)));
+       items.push_back (CheckMenuElem (_("Mute")));
+       CheckMenuItem* region_mute_item = static_cast<CheckMenuItem*>(&items.back());
+       fooc = region_mute_item->signal_activate().connect (sigc::mem_fun(*this, &Editor::toggle_region_mute));
+       if (region_to_check->muted()) {
+               fooc.block (true);
+               region_mute_item->set_active();
+               fooc.block (false);
        }
-       
-       items.push_back (MenuElem (_("Reverse"), mem_fun(*this, &Editor::reverse_regions)));
+
+       if (!Profile->get_sae()) {
+               items.push_back (CheckMenuElem (_("Opaque")));
+               CheckMenuItem* region_opaque_item = static_cast<CheckMenuItem*>(&items.back());
+               fooc = region_opaque_item->signal_activate().connect (sigc::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"), sigc::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"), sigc::mem_fun(*this, &Editor::reset_region_gain_envelopes)));
+
+                       items.push_back (CheckMenuElem (_("Envelope Visible")));
+                       CheckMenuItem* region_envelope_visible_item = static_cast<CheckMenuItem*> (&items.back());
+                       fooc = region_envelope_visible_item->signal_activate().connect (sigc::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 (sigc::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"), sigc::mem_fun(*this, &Editor::normalize_region)));
+               if (ar->scale_amplitude() != 1) {
+                       items.push_back (MenuElem (_("Reset Gain"), sigc::mem_fun(*this, &Editor::reset_region_scale_amplitude)));
+               }
+
+       } else if (mr) {
+               items.push_back (MenuElem (_("Quantize"), sigc::mem_fun(*this, &Editor::quantize_region)));
+               items.push_back (SeparatorElem());
+       }
+
+       items.push_back (MenuElem (_("Strip Silence..."), sigc::mem_fun (*this, &Editor::strip_region_silence)));
+       items.push_back (MenuElem (_("Reverse"), sigc::mem_fun(*this, &Editor::reverse_region)));
+       items.push_back (SeparatorElem());
 
        /* range related stuff */
-       
-       add_item_with_sensitivity (items, MenuElem (_("Add range markers"), mem_fun (*this, &Editor::add_location_from_audio_region)), selection->regions.size() == 1);
-       
-       add_item_with_sensitivity (items, MenuElem (_("Set range selection"), mem_fun (*this, &Editor::set_selection_from_audio_region)), selection->regions.size() == 1);
-       
+
+       items.push_back (MenuElem (_("Add Single Range"), sigc::mem_fun (*this, &Editor::add_location_from_audio_region)));
+       items.push_back (MenuElem (_("Add Range Markers"), sigc::mem_fun (*this, &Editor::add_locations_from_audio_region)));
+       if (selection->regions.size() < 2) {
+               items.back().set_sensitive (false);
+       }
+
+       items.push_back (MenuElem (_("Set Range Selection"), sigc::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 forward"), (bind (mem_fun(*this, &Editor::nudge_forward), false))));
-       nudge_items.push_back (MenuElem (_("Nudge backward"), (bind (mem_fun(*this, &Editor::nudge_backward), false))));
-       nudge_items.push_back (MenuElem (_("Nudge forward by capture offset"), (mem_fun(*this, &Editor::nudge_forward_capture_offset))));
-       nudge_items.push_back (MenuElem (_("Nudge backward by capture offset"), (mem_fun(*this, &Editor::nudge_backward_capture_offset))));
+
+       nudge_items.push_back (MenuElem (_("Nudge Forward"), (sigc::bind (sigc::mem_fun(*this, &Editor::nudge_forward), false, false))));
+       nudge_items.push_back (MenuElem (_("Nudge Backward"), (sigc::bind (sigc::mem_fun(*this, &Editor::nudge_backward), false, false))));
+       nudge_items.push_back (MenuElem (_("Nudge Forward by Capture Offset"), (sigc::mem_fun(*this, &Editor::nudge_forward_capture_offset))));
+       nudge_items.push_back (MenuElem (_("Nudge Backward by Capture Offset"), (sigc::mem_fun(*this, &Editor::nudge_backward_capture_offset))));
 
        items.push_back (MenuElem (_("Nudge"), *nudge_menu));
+       items.push_back (SeparatorElem());
 
        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 cursor"), mem_fun(*this, &Editor::trim_region_from_edit_cursor)));
-       trim_items.push_back (MenuElem (_("Edit cursor to end"), mem_fun(*this, &Editor::trim_region_to_edit_cursor)));
-                            
+
+       trim_items.push_back (MenuElem (_("Start to Edit Point"), sigc::mem_fun(*this, &Editor::trim_region_from_edit_point)));
+       foo_item = &trim_items.back();
+       if (_edit_point == EditAtMouse) {
+               foo_item->set_sensitive (false);
+       }
+       trim_items.push_back (MenuElem (_("Edit Point to End"), sigc::mem_fun(*this, &Editor::trim_region_to_edit_point)));
+       foo_item = &trim_items.back();
+       if (_edit_point == EditAtMouse) {
+               foo_item->set_sensitive (false);
+       }
+       trim_items.push_back (MenuElem (_("Trim to Loop"), sigc::mem_fun(*this, &Editor::trim_region_to_loop)));
+       trim_items.push_back (MenuElem (_("Trim to Punch"), sigc::mem_fun(*this, &Editor::trim_region_to_punch)));
+
        items.push_back (MenuElem (_("Trim"), *trim_menu));
-       items.push_back (MenuElem (_("Split"), (mem_fun(*this, &Editor::split_region))));
-       items.push_back (MenuElem (_("Make mono regions"), (mem_fun(*this, &Editor::split_multichannel_region))));
-       items.push_back (MenuElem (_("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)));
+
+       items.push_back (MenuElem (_("Split"), (sigc::mem_fun(*this, &Editor::split))));
+       region_edit_menu_split_item = &items.back();
+
+       if (_edit_point == EditAtMouse) {
+               region_edit_menu_split_item->set_sensitive (false);
+       }
+
+       items.push_back (MenuElem (_("Make Mono Regions"), (sigc::mem_fun(*this, &Editor::split_multichannel_region))));
+       region_edit_menu_split_multichannel_item = &items.back();
+
+       items.push_back (MenuElem (_("Duplicate"), (sigc::bind (sigc::mem_fun(*this, &Editor::duplicate_dialog), false))));
+       items.push_back (MenuElem (_("Multi-Duplicate"), (sigc::bind (sigc::mem_fun(*this, &Editor::duplicate_dialog), true))));
+       items.push_back (MenuElem (_("Fill Track"), (sigc::mem_fun(*this, &Editor::region_fill_track))));
+       items.push_back (SeparatorElem());
+       items.push_back (MenuElem (_("Remove"), sigc::mem_fun(*this, &Editor::remove_selected_regions)));
 
        /* OK, stick the region submenu at the top of the list, and then add
           the standard items.
        */
 
-       string const menu_item_name = selection->regions.size() > 1 ? _("Regions") : _("Region");
+       /* we have to hack up the region name because "_" has a special
+          meaning for menu titles.
+       */
+
+       string::size_type pos = 0;
+       string menu_item_name = (region) ? 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));
+       edit_items.push_back (SeparatorElem());
 }
 
 /** Add context menu items relevant to selection ranges.
@@ -1593,80 +1896,64 @@ void
 Editor::add_selection_context_items (Menu_Helpers::MenuList& edit_items)
 {
        using namespace Menu_Helpers;
-       Menu     *selection_menu = manage (new Menu);
-       MenuList& items       = selection_menu->items();
-       selection_menu->set_name ("ArdourContextMenu");
 
-       items.push_back (MenuElem (_("Play range"), mem_fun(*this, &Editor::play_selection)));
-       items.push_back (MenuElem (_("Loop range"), mem_fun(*this, &Editor::set_route_loop_selection)));
+       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)));
 
-#ifdef FFT_ANALYSIS
-       items.push_back (SeparatorElem());
-       items.push_back (MenuElem (_("Analyze range"), mem_fun(*this, &Editor::analyze_range_selection)));
-#endif
-       
-       items.push_back (SeparatorElem());
-       items.push_back (MenuElem (_("Separate range to track"), mem_fun(*this, &Editor::separate_region_from_selection)));
-       items.push_back (MenuElem (_("Separate range to region list"), mem_fun(*this, &Editor::new_region_from_selection)));
-       
-       items.push_back (SeparatorElem());
-       items.push_back (MenuElem (_("Select all in range"), mem_fun(*this, &Editor::select_all_selectables_using_time_selection)));
-       items.push_back (SeparatorElem());
-       items.push_back (MenuElem (_("Add range markers"), mem_fun (*this, &Editor::add_location_from_selection)));
-       items.push_back (MenuElem (_("Set range to loop range"), mem_fun(*this, &Editor::set_selection_from_loop)));
-       items.push_back (MenuElem (_("Set range to punch range"), mem_fun(*this, &Editor::set_selection_from_punch)));
-       items.push_back (SeparatorElem());
-       items.push_back (MenuElem (_("Crop region to range"), mem_fun(*this, &Editor::crop_region_to_selection)));
-       items.push_back (MenuElem (_("Fill range with region"), mem_fun(*this, &Editor::region_fill_selection)));
-       items.push_back (MenuElem (_("Duplicate range"), bind (mem_fun(*this, &Editor::duplicate_dialog), false)));
-       items.push_back (MenuElem (_("Create chunk from range"), mem_fun(*this, &Editor::create_named_selection)));
-       items.push_back (SeparatorElem());
-       items.push_back (MenuElem (_("Bounce range"), mem_fun(*this, &Editor::bounce_range_selection)));
-       items.push_back (MenuElem (_("Export range"), mem_fun(*this, &Editor::export_selection)));
+       edit_items.push_back (SeparatorElem());
+       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"), 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"), sigc::mem_fun(*this, &Editor::separate_region_from_selection)));
+       edit_items.push_back (MenuElem (_("Convert to Region in Region List"), sigc::mem_fun(*this, &Editor::new_region_from_selection)));
+
+       edit_items.push_back (SeparatorElem());
+       edit_items.push_back (MenuElem (_("Select All in Range"), 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"), 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"), sigc::mem_fun (*this, &Editor::add_location_from_selection)));
+
+       edit_items.push_back (SeparatorElem());
+       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 (MenuElem (_("Range"), *selection_menu));
        edit_items.push_back (SeparatorElem());
+       edit_items.push_back (MenuElem (_("Consolidate Range"), sigc::bind (sigc::mem_fun(*this, &Editor::bounce_range_selection), true, false)));
+       edit_items.push_back (MenuElem (_("Consolidate Range With Processing"), sigc::bind (sigc::mem_fun(*this, &Editor::bounce_range_selection), true, true)));
+       edit_items.push_back (MenuElem (_("Bounce Range to Region List"), sigc::bind (sigc::mem_fun(*this, &Editor::bounce_range_selection), false, false)));
+       edit_items.push_back (MenuElem (_("Bounce Range to Region List With Processing"), sigc::bind (sigc::mem_fun(*this, &Editor::bounce_range_selection), false, true)));
+       edit_items.push_back (MenuElem (_("Export Range"), sigc::mem_fun(*this, &Editor::export_range)));
 }
 
-/** Add context menu items relevant to busses or audio tracks.
- * @param edit_items List to add the items to.
- */
+
 void
-Editor::add_bus_or_audio_track_context_items (Menu_Helpers::MenuList& edit_items)
+Editor::add_dstream_context_items (Menu_Helpers::MenuList& edit_items)
 {
        using namespace Menu_Helpers;
 
-       /* We add every possible action here, and de-sensitize things
-          that aren't allowed.  The sensitivity logic is a bit spread out;
-          on the one hand I'm using things like can_cut_copy (), which is
-          reasonably complicated and so perhaps better near the function that
-          it expresses sensitivity for, and on the other hand checks
-          in this function as well.  You can't really have can_* for everything
-          or the number of methods would get silly. */
+       /* Playback */
 
-       bool const one_selected_region = selection->regions.size() == 1;
+       Menu *play_menu = manage (new Menu);
+       MenuList& play_items = play_menu->items();
+       play_menu->set_name ("ArdourContextMenu");
 
-       /* Count the number of selected audio tracks */
-       int n_audio_tracks = 0;
-       for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
-               RouteTimeAxisView const * r = dynamic_cast<RouteTimeAxisView*>(*i);
-               if (r && r->is_audio_track()) {
-                       n_audio_tracks++;
-               }
-       }
-
-       /* Playback */
+       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"), sigc::mem_fun(*this, &Editor::loop_selected_region)));
 
-       Menu *play_menu = manage (new Menu);
-       MenuList& play_items = play_menu->items();
-       play_menu->set_name ("ArdourContextMenu");
-       
-       play_items.push_back (MenuElem (_("Play from edit cursor"), mem_fun(*this, &Editor::play_from_edit_cursor)));
-       play_items.push_back (MenuElem (_("Play from start"), mem_fun(*this, &Editor::play_from_start)));
-       add_item_with_sensitivity (play_items, MenuElem (_("Play region"), mem_fun(*this, &Editor::play_selected_region)), one_selected_region);
-       
-       add_item_with_sensitivity (play_items, MenuElem (_("Loop region"), mem_fun(*this, &Editor::loop_selected_region)), one_selected_region);
-       
        edit_items.push_back (MenuElem (_("Play"), *play_menu));
 
        /* Selection */
@@ -1675,32 +1962,21 @@ Editor::add_bus_or_audio_track_context_items (Menu_Helpers::MenuList& edit_items
        MenuList& select_items = select_menu->items();
        select_menu->set_name ("ArdourContextMenu");
 
-       string str = selection->tracks.size() == 1 ? _("Select all in track") : _("Select all in tracks");
-
-       select_items.push_back (MenuElem (str, bind (mem_fun(*this, &Editor::select_all_in_selected_tracks), Selection::Set)));
-       
-       select_items.push_back (MenuElem (_("Select all"), bind (mem_fun(*this, &Editor::select_all), Selection::Set)));
-
-       str = selection->tracks.size() == 1 ? _("Invert selection in track") : _("Invert selection in tracks");
-       
-       select_items.push_back (MenuElem (str, mem_fun(*this, &Editor::invert_selection_in_selected_tracks)));
-       
-       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());
-
-       if (n_audio_tracks) {
-               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 (_("Select all after edit cursor"), bind (mem_fun(*this, &Editor::select_all_selectables_using_cursor), edit_cursor, true)));
-       select_items.push_back (MenuElem (_("Select all before edit cursor"), bind (mem_fun(*this, &Editor::select_all_selectables_using_cursor), edit_cursor, 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)));
-
-       if (n_audio_tracks) {
-               select_items.push_back (MenuElem (_("Select all between cursors"), bind (mem_fun(*this, &Editor::select_all_selectables_between_cursors), playhead_cursor, edit_cursor)));
-       }
+       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"), 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));
 
@@ -1710,76 +1986,119 @@ Editor::add_bus_or_audio_track_context_items (Menu_Helpers::MenuList& edit_items
        MenuList& cutnpaste_items = cutnpaste_menu->items();
        cutnpaste_menu->set_name ("ArdourContextMenu");
 
-       add_item_with_sensitivity (cutnpaste_items, MenuElem (_("Cut"), mem_fun(*this, &Editor::cut)), can_cut_copy ());
-       
-       add_item_with_sensitivity (cutnpaste_items, MenuElem (_("Copy"), mem_fun(*this, &Editor::copy)), can_cut_copy ());
-       
-       if (n_audio_tracks) {
-               cutnpaste_items.push_back (MenuElem (_("Paste at edit cursor"), bind (mem_fun(*this, &Editor::paste), 1.0f)));
-               cutnpaste_items.push_back (MenuElem (_("Paste at mouse"), mem_fun(*this, &Editor::mouse_paste)));
-               
-               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 (MenuElem (_("Insert chunk"), bind (mem_fun(*this, &Editor::paste_named_selection), 1.0f)));
-       } else {
-               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"), sigc::bind (sigc::mem_fun(*this, &Editor::align), ARDOUR::SyncPoint)));
+       cutnpaste_items.push_back (MenuElem (_("Align Relative"), sigc::bind (sigc::mem_fun(*this, &Editor::align_relative), ARDOUR::SyncPoint)));
 
        edit_items.push_back (MenuElem (_("Edit"), *cutnpaste_menu));
-               
-       if (n_audio_tracks) {
 
-               Menu *track_menu = manage (new Menu);
-               MenuList& track_items = track_menu->items();
-               track_menu->set_name ("ArdourContextMenu");
-               
-               /* Adding new material */
-       
-               add_item_with_sensitivity (track_items, MenuElem (_("Insert selected region"), bind (mem_fun(*this, &Editor::insert_region_list_selection), 1.0f)), n_audio_tracks == 1);
-               
-               add_item_with_sensitivity (track_items, MenuElem (_("Insert existing audio"), bind (mem_fun(*this, &Editor::add_external_audio_action), ImportToTrack)), n_audio_tracks == 1);
-               
-               /* Nudge */
+       /* Adding new material */
 
-               Menu *nudge_menu = manage (new Menu());
-               MenuList& nudge_items = nudge_menu->items();
-               nudge_menu->set_name ("ArdourContextMenu");
+       edit_items.push_back (SeparatorElem());
+       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)));
 
-               str = selection->tracks.size() == 1 ? _("Nudge track forward") : _("Nude tracks forward");
-               nudge_items.push_back (MenuElem (str, (bind (mem_fun(*this, &Editor::nudge_selected_tracks), false, true))));
+       /* Nudge track */
 
-               str = selection->tracks.size() == 1 ? _("Nudge track after edit cursor forward") : _("Nudge tracks after edit cursor forward");
-               
-               nudge_items.push_back (MenuElem (str, (bind (mem_fun(*this, &Editor::nudge_selected_tracks), true, true))));
+       Menu *nudge_menu = manage (new Menu());
+       MenuList& nudge_items = nudge_menu->items();
+       nudge_menu->set_name ("ArdourContextMenu");
 
-               str = selection->tracks.size() == 1 ? _("Nudge track backward") : _("Nudge tracks backward");
-               
-               nudge_items.push_back (MenuElem (str, (bind (mem_fun(*this, &Editor::nudge_selected_tracks), false, false))));
+       edit_items.push_back (SeparatorElem());
+       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))));
 
-               str = selection->tracks.size() == 1 ? _("Nudge track after edit cursor backward") : _("Nudge tracks after edit cursor backward");
-               
-               nudge_items.push_back (MenuElem (str, (bind (mem_fun(*this, &Editor::nudge_selected_tracks), true, false))));
-               
-               track_items.push_back (MenuElem (_("Nudge"), *nudge_menu));
+       edit_items.push_back (MenuElem (_("Nudge"), *nudge_menu));
+}
 
-               /* Freeze */
-               track_items.push_back (MenuElem (_("Freeze"), mem_fun(*this, &Editor::freeze_routes)));
-               track_items.push_back (MenuElem (_("Unfreeze"), mem_fun(*this, &Editor::unfreeze_routes)));
+void
+Editor::add_bus_context_items (Menu_Helpers::MenuList& edit_items)
+{
+       using namespace Menu_Helpers;
 
-               str = selection->tracks.size() == 1 ? _("Track") : _("Tracks");
-               edit_items.push_back (MenuElem (str, *track_menu));
-       }
+       /* Playback */
+
+       Menu *play_menu = manage (new Menu);
+       MenuList& play_items = play_menu->items();
+       play_menu->set_name ("ArdourContextMenu");
+
+       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 */
+
+       Menu *select_menu = manage (new Menu);
+       MenuList& select_items = select_menu->items();
+       select_menu->set_name ("ArdourContextMenu");
+
+       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"), 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));
+
+       /* Cut-n-Paste */
+
+       Menu *cutnpaste_menu = manage (new Menu);
+       MenuList& cutnpaste_items = cutnpaste_menu->items();
+       cutnpaste_menu->set_name ("ArdourContextMenu");
+
+       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 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));
+}
+
+SnapType
+Editor::snap_type() const
+{
+       return _snap_type;
 }
 
-/* CURSOR SETTING AND MARKS AND STUFF */
+SnapMode
+Editor::snap_mode() const
+{
+       return _snap_mode;
+}
 
 void
 Editor::set_snap_to (SnapType st)
-{      
-       snap_type = st;
-       string str = snap_type_strings[(int) st];
+{
+       unsigned int snap_ind = (unsigned int)st;
+
+       _snap_type = st;
+
+       if (snap_ind > snap_type_strings.size() - 1) {
+               snap_ind = 0;
+               _snap_type = (SnapType)snap_ind;
+       }
+
+       string str = snap_type_strings[snap_ind];
 
        if (str != snap_type_selector.get_active_text()) {
                snap_type_selector.set_active_text (str);
@@ -1787,13 +2106,23 @@ Editor::set_snap_to (SnapType st)
 
        instant_save ();
 
-       switch (snap_type) {
+       switch (_snap_type) {
        case SnapToAThirtysecondBeat:
        case SnapToASixteenthBeat:
        case SnapToAEighthBeat:
        case SnapToAQuarterBeat:
        case SnapToAThirdBeat:
-                update_tempo_based_rulers ();
+               compute_bbt_ruler_scale (leftmost_frame, leftmost_frame + current_page_frames());
+               update_tempo_based_rulers ();
+               break;
+
+       case SnapToRegionStart:
+       case SnapToRegionEnd:
+       case SnapToRegionSync:
+       case SnapToRegionBoundary:
+               build_region_boundary_cache ();
+               break;
+
        default:
                /* relax */
                break;
@@ -1803,7 +2132,7 @@ Editor::set_snap_to (SnapType st)
 void
 Editor::set_snap_mode (SnapMode mode)
 {
-       snap_mode = mode;
+       _snap_mode = mode;
        string str = snap_mode_strings[(int)mode];
 
        if (str != snap_mode_selector.get_active_text ()) {
@@ -1812,9 +2141,57 @@ Editor::set_snap_mode (SnapMode mode)
 
        instant_save ();
 }
+void
+Editor::set_edit_point_preference (EditPoint ep, bool force)
+{
+       bool changed = (_edit_point != ep);
+
+       _edit_point = ep;
+       string str = edit_point_strings[(int)ep];
+
+       if (str != edit_point_selector.get_active_text ()) {
+               edit_point_selector.set_active_text (str);
+       }
+
+       set_canvas_cursor ();
+
+       if (!force && !changed) {
+               return;
+       }
+
+       const char* action=NULL;
+
+       switch (_edit_point) {
+       case EditAtPlayhead:
+               action = "edit-at-playhead";
+               break;
+       case EditAtSelectedMarker:
+               action = "edit-at-marker";
+               break;
+       case EditAtMouse:
+               action = "edit-at-mouse";
+               break;
+       }
+
+       Glib::RefPtr<Action> act = ActionManager::get_action ("Editor", action);
+       if (act) {
+               Glib::RefPtr<RadioAction>::cast_dynamic(act)->set_active (true);
+       }
+
+       nframes64_t foo;
+       bool in_track_canvas;
+
+       if (!mouse_frame (foo, in_track_canvas)) {
+               in_track_canvas = false;
+       }
+
+       reset_canvas_action_sensitivity (in_track_canvas);
+
+       instant_save ();
+}
 
 int
-Editor::set_state (const XMLNode& node)
+Editor::set_state (const XMLNode& node, int /*version*/)
 {
        const XMLProperty* prop;
        XMLNode* geometry;
@@ -1825,50 +2202,68 @@ Editor::set_state (const XMLNode& node)
                _id = prop->value ();
        }
 
-       if ((geometry = find_named_node (node, "geometry")) == 0) {
+       g.base_width = default_width;
+       g.base_height = default_height;
+       x = 1;
+       y = 1;
+       xoff = 0;
+       yoff = 21;
 
-               g.base_width = default_width;
-               g.base_height = default_height;
-               x = 1;
-               y = 1;
-               xoff = 0;
-               yoff = 21;
+       if ((geometry = find_named_node (node, "geometry")) != 0) {
 
-       } else {
+               XMLProperty* prop;
+
+               if ((prop = geometry->property("x_size")) == 0) {
+                       prop = geometry->property ("x-size");
+               }
+               if (prop) {
+                       g.base_width = atoi(prop->value());
+               }
+               if ((prop = geometry->property("y_size")) == 0) {
+                       prop = geometry->property ("y-size");
+               }
+               if (prop) {
+                       g.base_height = atoi(prop->value());
+               }
 
-               g.base_width = atoi(geometry->property("x_size")->value());
-               g.base_height = atoi(geometry->property("y_size")->value());
-               x = atoi(geometry->property("x_pos")->value());
-               y = atoi(geometry->property("y_pos")->value());
-               xoff = atoi(geometry->property("x_off")->value());
-               yoff = atoi(geometry->property("y_off")->value());
+               if ((prop = geometry->property ("x_pos")) == 0) {
+                       prop = geometry->property ("x-pos");
+               }
+               if (prop) {
+                       x = atoi (prop->value());
+
+               }
+               if ((prop = geometry->property ("y_pos")) == 0) {
+                       prop = geometry->property ("y-pos");
+               }
+               if (prop) {
+                       y = atoi (prop->value());
+               }
+
+               if ((prop = geometry->property ("x_off")) == 0) {
+                       prop = geometry->property ("x-off");
+               }
+               if (prop) {
+                       xoff = atoi (prop->value());
+               }
+               if ((prop = geometry->property ("y_off")) == 0) {
+                       prop = geometry->property ("y-off");
+               }
+               if (prop) {
+                       yoff = atoi (prop->value());
+               }
        }
 
        set_default_size (g.base_width, g.base_height);
        move (x, y);
 
-       if (session && (prop = node.property ("playhead"))) {
-               nframes_t pos = atol (prop->value().c_str());
+       if (_session && (prop = node.property ("playhead"))) {
+               nframes64_t pos = atol (prop->value().c_str());
                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 (session && (prop = node.property ("edit-cursor"))) {
-               nframes_t pos = atol (prop->value().c_str());
-               edit_cursor->set_position (pos);
-       } else {
-               edit_cursor->set_position (0);
        }
-
+       
        if ((prop = node.property ("mixer-width"))) {
                editor_mixer_strip_width = Width (string_2_enum (prop->value(), editor_mixer_strip_width));
        }
@@ -1891,27 +2286,40 @@ Editor::set_state (const XMLNode& node)
 
        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 ("show-waveforms"))) {
-               bool yn = (prop->value() == "yes");
-               _show_waveforms = !yn;
-               RefPtr<Action> act = ActionManager::get_action (X_("Editor"), X_("ToggleWaveformVisibility"));
+       if ((prop = node.property ("left-frame")) != 0){
+               nframes64_t pos;
+               if (sscanf (prop->value().c_str(), "%" PRId64, &pos) == 1) {
+                       reset_x_origin (pos);
+                       /* this hack prevents the initial call to update_current_screen() from doing re-centering on the playhead */
+                       last_update_frame = pos;
+               }
+       }
+
+       if ((prop = node.property ("internal-edit"))) {
+               bool yn = string_is_affirmative (prop->value());
+               RefPtr<Action> act = ActionManager::get_action (X_("MouseMode"), X_("toggle-internal-edit"));
                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 ("join-object-range"))) {
+               join_object_range_button.set_active (string_is_affirmative (prop->value ()));
+       }
+
+       if ((prop = node.property ("edit-point"))) {
+               set_edit_point_preference ((EditPoint) string_2_enum (prop->value(), _edit_point), true);
+       }
+
        if ((prop = node.property ("show-waveforms-recording"))) {
-               bool yn = (prop->value() == "yes");
+               bool yn = string_is_affirmative (prop->value());
                _show_waveforms_recording = !yn;
                RefPtr<Action> act = ActionManager::get_action (X_("Editor"), X_("ToggleWaveformsWhileRecording"));
                if (act) {
@@ -1921,9 +2329,9 @@ Editor::set_state (const XMLNode& node)
                        tact->set_active (yn);
                }
        }
-       
+
        if ((prop = node.property ("show-measures"))) {
-               bool yn = (prop->value() == "yes");
+               bool yn = string_is_affirmative (prop->value());
                _show_measures = !yn;
                RefPtr<Action> act = ActionManager::get_action (X_("Editor"), X_("ToggleMeasureVisibility"));
                if (act) {
@@ -1935,7 +2343,7 @@ Editor::set_state (const XMLNode& node)
        }
 
        if ((prop = node.property ("follow-playhead"))) {
-               bool yn = (prop->value() == "yes");
+               bool yn = string_is_affirmative (prop->value());
                set_follow_playhead (yn);
                RefPtr<Action> act = ActionManager::get_action (X_("Editor"), X_("toggle-follow-playhead"));
                if (act) {
@@ -1947,12 +2355,11 @@ Editor::set_state (const XMLNode& node)
        }
 
        if ((prop = node.property ("region-list-sort-type"))) {
-               region_list_sort_type = (Editing::RegionListSortType) -1; // force change 
-               reset_region_list_sort_type(str2regionlistsorttype(prop->value()));
+               _regions->reset_sort_type (str2regionlistsorttype(prop->value()), true);
        }
 
        if ((prop = node.property ("xfades-visible"))) {
-               bool yn = (prop->value() == "yes");
+               bool yn = string_is_affirmative (prop->value());
                _xfade_visibility = !yn;
                // set_xfade_visibility (yn);
        }
@@ -1963,15 +2370,15 @@ Editor::set_state (const XMLNode& node)
                if (act) {
 
                        Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
-                       bool yn = (prop->value() == X_("yes"));
+                       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"));
@@ -1979,10 +2386,10 @@ Editor::set_state (const XMLNode& node)
                if (act) {
 
                        Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
-                       bool yn = (prop->value() == X_("yes"));
+                       bool yn = string_is_affirmative (prop->value());
 
                        /* do it twice to force the change */
-                       
+
                        tact->set_active (!yn);
                        tact->set_active (yn);
                }
@@ -2000,29 +2407,29 @@ Editor::get_state ()
 
        _id.print (buf, sizeof (buf));
        node->add_property ("id", buf);
-       
+
        if (is_realized()) {
                Glib::RefPtr<Gdk::Window> win = get_window();
-               
+
                int x, y, xoff, yoff, width, height;
                win->get_root_origin(x, y);
                win->get_position(xoff, yoff);
                win->get_size(width, height);
-               
+
                XMLNode* geometry = new XMLNode ("geometry");
 
                snprintf(buf, sizeof(buf), "%d", width);
-               geometry->add_property("x_size", string(buf));
+               geometry->add_property("x-size", string(buf));
                snprintf(buf, sizeof(buf), "%d", height);
-               geometry->add_property("y_size", string(buf));
+               geometry->add_property("y-size", string(buf));
                snprintf(buf, sizeof(buf), "%d", x);
-               geometry->add_property("x_pos", string(buf));
+               geometry->add_property("x-pos", string(buf));
                snprintf(buf, sizeof(buf), "%d", y);
-               geometry->add_property("y_pos", string(buf));
+               geometry->add_property("y-pos", string(buf));
                snprintf(buf, sizeof(buf), "%d", xoff);
-               geometry->add_property("x_off", string(buf));
+               geometry->add_property("x-off", string(buf));
                snprintf(buf, sizeof(buf), "%d", yoff);
-               geometry->add_property("y_off", string(buf));
+               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));
 
@@ -2030,35 +2437,38 @@ Editor::get_state ()
        }
 
        maybe_add_mixer_strip_width (*node);
-       
+
        snprintf (buf, sizeof(buf), "%d", (int) zoom_focus);
        node->add_property ("zoom-focus", buf);
        snprintf (buf, sizeof(buf), "%f", frames_per_unit);
        node->add_property ("zoom", buf);
-       snprintf (buf, sizeof(buf), "%d", (int) snap_type);
+       snprintf (buf, sizeof(buf), "%d", (int) _snap_type);
        node->add_property ("snap-to", buf);
-       snprintf (buf, sizeof(buf), "%d", (int) snap_mode);
+       snprintf (buf, sizeof(buf), "%d", (int) _snap_mode);
        node->add_property ("snap-mode", buf);
 
-       snprintf (buf, sizeof (buf), "%" PRIu32, playhead_cursor->current_frame);
+       node->add_property ("edit-point", enum_2_string (_edit_point));
+
+       snprintf (buf, sizeof (buf), "%" PRIi64, playhead_cursor->current_frame);
        node->add_property ("playhead", buf);
-       snprintf (buf, sizeof (buf), "%" PRIu32, edit_cursor->current_frame);
-       node->add_property ("edit-cursor", buf);
+       snprintf (buf, sizeof (buf), "%" PRIi64, leftmost_frame);
+       node->add_property ("left-frame", buf);
 
-       node->add_property ("show-waveforms", _show_waveforms ? "yes" : "no");
        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 ("xfades-visible", _xfade_visibility ? "yes" : "no");
-       node->add_property ("region-list-sort-type", enum2str(region_list_sort_type));
+       node->add_property ("region-list-sort-type", enum2str (_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) {
                Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
                node->add_property (X_("show-editor-mixer"), tact->get_active() ? "yes" : "no");
        }
-       
+
        act = ActionManager::get_action (X_("Editor"), X_("show-editor-list"));
        if (act) {
                Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic(act);
@@ -2070,144 +2480,184 @@ Editor::get_state ()
 
 
 
-TimeAxisView *
+/** @param y y offset from the top of all trackviews.
+ *  @return pair: TimeAxisView that y is over, layer index.
+ *  TimeAxisView may be 0.  Layer index is the layer number if the TimeAxisView is valid and is
+ *  in stacked region display mode, otherwise 0.
+ */
+std::pair<TimeAxisView *, layer_t>
 Editor::trackview_by_y_position (double y)
 {
        for (TrackViewList::iterator iter = track_views.begin(); iter != track_views.end(); ++iter) {
 
-               TimeAxisView *tv;
-
-               if ((tv = (*iter)->covers_y_position (y)) != 0) {
-                       return tv;
+               std::pair<TimeAxisView*, int> const r = (*iter)->covers_y_position (y);
+               if (r.first) {
+                       return r;
                }
        }
 
-       return 0;
+       return std::make_pair ( (TimeAxisView *) 0, 0);
 }
 
+/** 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, or 0.
+ */
 void
-Editor::snap_to (nframes64_t& start, int32_t direction, bool for_mark)
+Editor::snap_to_with_modifier (nframes64_t& start, GdkEvent const * event, int32_t direction, bool for_mark)
 {
-       Location* before = 0;
-       Location* after = 0;
-
-       if (!session) {
+       if (!_session || !event) {
                return;
        }
 
-       const nframes64_t one_second = session->frame_rate();
-       const nframes64_t one_minute = session->frame_rate() * 60;
-       const nframes64_t one_smpte_second = (nframes64_t)(rint(session->smpte_frames_per_second()) * session->frames_per_smpte_frame());
-       nframes64_t one_smpte_minute = (nframes64_t)(rint(session->smpte_frames_per_second()) * session->frames_per_smpte_frame() * 60);
-       nframes64_t presnap = start;
+       if (Keyboard::modifier_state_contains (event->button.state, Keyboard::snap_modifier())) {
+               if (_snap_mode == SnapOff) {
+                       snap_to_internal (start, direction, for_mark);
+               }
+       } else {
+               if (_snap_mode != SnapOff) {
+                       snap_to_internal (start, direction, for_mark);
+               }
+       }
+}
 
-       switch (snap_type) {
-       case SnapToFrame:
-               break;
+void
+Editor::snap_to (nframes64_t& start, int32_t direction, bool for_mark)
+{
+       if (!_session || _snap_mode == SnapOff) {
+               return;
+       }
 
-       case SnapToCDFrame:
-               if (direction) {
-                       start = (nframes_t) ceil ((double) start / (one_second / 75)) * (one_second / 75);
-               } else {
-                       start = (nframes_t) floor ((double) start / (one_second / 75)) * (one_second / 75);
-               }
-               break;
+       snap_to_internal (start, direction, for_mark);
+}
+
+void
+Editor::timecode_snap_to_internal (nframes64_t& start, int32_t direction, bool /*for_mark*/)
+{
+       const nframes64_t one_timecode_second = (nframes64_t)(rint(_session->timecode_frames_per_second()) * _session->frames_per_timecode_frame());
+       nframes64_t one_timecode_minute = (nframes64_t)(rint(_session->timecode_frames_per_second()) * _session->frames_per_timecode_frame() * 60);
 
-       case SnapToSMPTEFrame:
-               if (fmod((double)start, (double)session->frames_per_smpte_frame()) > (session->frames_per_smpte_frame() / 2)) {
-                       start = (nframes_t) (ceil ((double) start / session->frames_per_smpte_frame()) * session->frames_per_smpte_frame());
+       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());
                } else {
-                       start = (nframes_t) (floor ((double) start / session->frames_per_smpte_frame()) *  session->frames_per_smpte_frame());
+                       start = (nframes64_t) (floor ((double) start / _session->frames_per_timecode_frame()) *  _session->frames_per_timecode_frame());
                }
                break;
 
-       case SnapToSMPTESeconds:
-               if (session->smpte_offset_negative())
+       case SnapToTimecodeSeconds:
+               if (_session->timecode_offset_negative())
                {
-                       start += session->smpte_offset ();
+                       start += _session->timecode_offset ();
                } else {
-                       start -= session->smpte_offset ();
-               }    
-               if (start % one_smpte_second > one_smpte_second / 2) {
-                       start = (nframes_t) ceil ((double) start / one_smpte_second) * one_smpte_second;
+                       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;
                } else {
-                       start = (nframes_t) floor ((double) start / one_smpte_second) * one_smpte_second;
+                       start = (nframes64_t) floor ((double) start / one_timecode_second) * one_timecode_second;
                }
-               
-               if (session->smpte_offset_negative())
+
+               if (_session->timecode_offset_negative())
                {
-                       start -= session->smpte_offset ();
+                       start -= _session->timecode_offset ();
                } else {
-                       start += session->smpte_offset ();
+                       start += _session->timecode_offset ();
                }
                break;
-               
-       case SnapToSMPTEMinutes:
-               if (session->smpte_offset_negative())
+
+       case SnapToTimecodeMinutes:
+               if (_session->timecode_offset_negative())
                {
-                       start += session->smpte_offset ();
+                       start += _session->timecode_offset ();
                } else {
-                       start -= session->smpte_offset ();
+                       start -= _session->timecode_offset ();
                }
-               if (start % one_smpte_minute > one_smpte_minute / 2) {
-                       start = (nframes_t) ceil ((double) start / one_smpte_minute) * one_smpte_minute;
+               if (((direction == 0) && (start % one_timecode_minute > one_timecode_minute / 2)) || direction > 0) {
+                       start = (nframes64_t) ceil ((double) start / one_timecode_minute) * one_timecode_minute;
                } else {
-                       start = (nframes_t) floor ((double) start / one_smpte_minute) * one_smpte_minute;
+                       start = (nframes64_t) floor ((double) start / one_timecode_minute) * one_timecode_minute;
                }
-               if (session->smpte_offset_negative())
+               if (_session->timecode_offset_negative())
                {
-                       start -= session->smpte_offset ();
+                       start -= _session->timecode_offset ();
                } else {
-                       start += session->smpte_offset ();
+                       start += _session->timecode_offset ();
                }
                break;
-               
+       default:
+               fatal << "Editor::smpte_snap_to_internal() called with non-timecode snap type!" << endmsg;
+               /*NOTREACHED*/
+       }
+}
+
+void
+Editor::snap_to_internal (nframes64_t& start, int32_t direction, bool for_mark)
+{
+       const nframes64_t one_second = _session->frame_rate();
+       const nframes64_t one_minute = _session->frame_rate() * 60;
+       nframes64_t presnap = start;
+       nframes64_t before;
+       nframes64_t after;
+
+       switch (_snap_type) {
+       case SnapToTimecodeFrame:
+       case SnapToTimecodeSeconds:
+       case SnapToTimecodeMinutes:
+               return timecode_snap_to_internal (start, direction, 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);
+               } else {
+                       start = (nframes64_t) floor ((double) start / (one_second / 75)) * (one_second / 75);
+               }
+               break;
+
        case SnapToSeconds:
-               if (start % one_second > one_second / 2) {
-                       start = (nframes_t) ceil ((double) start / one_second) * one_second;
+               if (((direction == 0) && (start % one_second > one_second / 2)) || (direction > 0)) {
+                       start = (nframes64_t) ceil ((double) start / one_second) * one_second;
                } else {
-                       start = (nframes_t) floor ((double) start / one_second) * one_second;
+                       start = (nframes64_t) floor ((double) start / one_second) * one_second;
                }
                break;
-               
+
        case SnapToMinutes:
-               if (start % one_minute > one_minute / 2) {
-                       start = (nframes_t) ceil ((double) start / one_minute) * one_minute;
+               if (((direction == 0) && (start % one_minute > one_minute / 2)) || (direction > 0)) {
+                       start = (nframes64_t) ceil ((double) start / one_minute) * one_minute;
                } else {
-                       start = (nframes_t) floor ((double) start / one_minute) * one_minute;
+                       start = (nframes64_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);
-                break;
+               start = _session->tempo_map().round_to_beat_subdivision (start, 32, direction);
+               break;
 
        case SnapToASixteenthBeat:
-                start = session->tempo_map().round_to_beat_subdivision (start, 16);
-                break;
+               start = _session->tempo_map().round_to_beat_subdivision (start, 16, direction);
+               break;
 
        case SnapToAEighthBeat:
-                start = session->tempo_map().round_to_beat_subdivision (start, 8);
-                break;
+               start = _session->tempo_map().round_to_beat_subdivision (start, 8, direction);
+               break;
 
        case SnapToAQuarterBeat:
-                start = session->tempo_map().round_to_beat_subdivision (start, 4);
-                break;
-
-        case SnapToAThirdBeat:
-                start = session->tempo_map().round_to_beat_subdivision (start, 3);
-                break;
+               start = _session->tempo_map().round_to_beat_subdivision (start, 4, direction);
+               break;
 
-       case SnapToEditCursor:
-               start = edit_cursor->current_frame;
+       case SnapToAThirdBeat:
+               start = _session->tempo_map().round_to_beat_subdivision (start, 3, direction);
                break;
 
        case SnapToMark:
@@ -2215,39 +2665,21 @@ Editor::snap_to (nframes64_t& start, int32_t direction, bool for_mark)
                        return;
                }
 
-               before = session->locations()->first_location_before (start);
-               after = session->locations()->first_location_after (start);
+               _session->locations()->marks_either_side (start, before, after);
 
-               if (direction < 0) {
-                       if (before) {
-                               start = before->start();
-                       } else {
-                               start = 0;
-                       }
-               } else if (direction > 0) {
-                       if (after) {
-                               start = after->start();
-                       } else {
-                               start = session->current_end_frame();
-                       }
-               } else {
-                       if (before) {
-                               if (after) {
-                                       /* find nearest of the two */
-                                       if ((start - before->start()) < (after->start() - start)) {
-                                               start = before->start();
-                                       } else {
-                                               start = after->start();
-                                       }
-                               } else {
-                                       start = before->start();
-                               }
-                       } else if (after) {
-                               start = after->start();
+               if (before == max_frames) {
+                       start = after;
+               } else if (after == max_frames) {
+                       start = before;
+               } else if (before != max_frames && after != max_frames) {
+                       /* have before and after */
+                       if ((start - before) < (after - start)) {
+                               start = before;
                        } else {
-                               /* relax */
+                               start = after;
                        }
                }
+
                break;
 
        case SnapToRegionStart:
@@ -2255,134 +2687,158 @@ Editor::snap_to (nframes64_t& start, int32_t direction, bool for_mark)
        case SnapToRegionSync:
        case SnapToRegionBoundary:
                if (!region_boundary_cache.empty()) {
-                       vector<nframes_t>::iterator i;
+
+                       vector<nframes64_t>::iterator prev = region_boundary_cache.end ();
+                       vector<nframes64_t>::iterator next = region_boundary_cache.end ();
 
                        if (direction > 0) {
-                               i = std::upper_bound (region_boundary_cache.begin(), region_boundary_cache.end(), start);
+                               next = std::upper_bound (region_boundary_cache.begin(), region_boundary_cache.end(), start);
                        } else {
-                               i = std::lower_bound (region_boundary_cache.begin(), region_boundary_cache.end(), start);
+                               next = std::lower_bound (region_boundary_cache.begin(), region_boundary_cache.end(), start);
                        }
-                       
-                       if (i != region_boundary_cache.end()) {
-                               start = *i;
+
+                       if (next != region_boundary_cache.begin ()) {
+                               prev = next;
+                               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;
+
+                       if (start > (p + n) / 2) {
+                               start = n;
                        } else {
-                               start = region_boundary_cache.back();
+                               start = p;
                        }
                }
                break;
        }
 
-       switch (snap_mode) {
+       switch (_snap_mode) {
        case SnapNormal:
-               return;                 
-               
+               return;
+
        case SnapMagnetic:
-               
+
                if (presnap > start) {
                        if (presnap > (start + unit_to_frame(snap_threshold))) {
                                start = presnap;
                        }
-                       
+
                } else if (presnap < start) {
                        if (presnap < (start - unit_to_frame(snap_threshold))) {
                                start = presnap;
                        }
                }
-               
+
        default:
+               /* handled at entry */
                return;
-               
+
        }
 }
 
+
 void
 Editor::setup_toolbar ()
 {
        string pixmap_path;
 
-       const guint32 FUDGE = 18; // Combo's are stupid - they steal space from the entry for the button
-
-
        /* Mode Buttons (tool selection) */
 
-       vector<ToggleButton *> mouse_mode_buttons;
-
-       mouse_move_button.add (*(manage (new Image (::get_icon("tool_object")))));
        mouse_move_button.set_relief(Gtk::RELIEF_NONE);
-       mouse_mode_buttons.push_back (&mouse_move_button);
-       mouse_select_button.add (*(manage (new Image (get_xpm("tool_range.xpm")))));
        mouse_select_button.set_relief(Gtk::RELIEF_NONE);
-       mouse_mode_buttons.push_back (&mouse_select_button);
-       mouse_gain_button.add (*(manage (new Image (::get_icon("tool_gain")))));
        mouse_gain_button.set_relief(Gtk::RELIEF_NONE);
-       mouse_mode_buttons.push_back (&mouse_gain_button);
-       mouse_zoom_button.add (*(manage (new Image (::get_icon("tool_zoom")))));
        mouse_zoom_button.set_relief(Gtk::RELIEF_NONE);
-       mouse_mode_buttons.push_back (&mouse_zoom_button);
-       mouse_timefx_button.add (*(manage (new Image (::get_icon("tool_stretch")))));
        mouse_timefx_button.set_relief(Gtk::RELIEF_NONE);
-       mouse_mode_buttons.push_back (&mouse_timefx_button);
-       mouse_audition_button.add (*(manage (new Image (::get_icon("tool_audition")))));
        mouse_audition_button.set_relief(Gtk::RELIEF_NONE);
-       mouse_note_button.add (*(manage (new Image (::get_icon("tool_note")))));
-       mouse_note_button.set_relief(Gtk::RELIEF_NONE);
-       mouse_mode_buttons.push_back (&mouse_note_button);
-       mouse_mode_buttons.push_back (&mouse_audition_button);
-       
-       mouse_mode_button_set = new GroupedButtons (mouse_mode_buttons);
+       // 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);
-       mouse_mode_button_box.pack_start(mouse_select_button, true, true);
-       mouse_mode_button_box.pack_start(mouse_zoom_button, true, true);
-       mouse_mode_button_box.pack_start(mouse_gain_button, true, true);
-       mouse_mode_button_box.pack_start(mouse_timefx_button, true, true);
-       mouse_mode_button_box.pack_start(mouse_audition_button, true, true);
-       mouse_mode_button_box.pack_start(mouse_note_button, true, true);
-       mouse_mode_button_box.set_homogeneous(true);
 
+       /* table containing mode buttons */
+
+       Table* mouse_mode_button_table = manage (new Table (Profile->get_sae() ? 4 : 6, 2));
+
+       int c = 0;
+
+       if (Profile->get_sae()) {
+               mouse_mode_button_table->attach (mouse_move_button, c, c + 1, 0, 1);
+               ++c;
+       } else {
+               mouse_mode_button_table->attach (mouse_move_button, c, c + 1, 0, 1);
+               mouse_mode_button_table->attach (mouse_select_button, c + 1, c + 2, 0, 1);
+               mouse_mode_button_table->attach (join_object_range_button, c, c + 2, 1, 2);
+               c += 2;
+       }
+
+       mouse_mode_button_table->attach (mouse_zoom_button, c, c + 1, 0, 1);
+       ++c;
+       
+       if (!Profile->get_sae()) {
+               mouse_mode_button_table->attach (mouse_gain_button, c, c + 1, 0, 1);
+               ++c;
+       }
+       
+       mouse_mode_button_table->attach (mouse_timefx_button, c, c + 1, 0, 1);
+       ++c;
+       
+       mouse_mode_button_table->attach (mouse_audition_button, c, c + 1, 0, 1);
+       ++c;
+       
+       mouse_mode_button_table->attach (internal_edit_button, c, c + 1, 0, 1);
+       ++c;
+       
        vector<string> edit_mode_strings;
-       edit_mode_strings.push_back (edit_mode_to_string (Splice));
        edit_mode_strings.push_back (edit_mode_to_string (Slide));
+       if (!Profile->get_sae()) {
+               edit_mode_strings.push_back (edit_mode_to_string (Splice));
+       }
+       edit_mode_strings.push_back (edit_mode_to_string (Lock));
 
        edit_mode_selector.set_name ("EditModeSelector");
-       Gtkmm2ext::set_size_request_to_display_given_text (edit_mode_selector, longest (edit_mode_strings).c_str(), 2+FUDGE, 10);
-       set_popdown_strings (edit_mode_selector, edit_mode_strings);
-       edit_mode_selector.signal_changed().connect (mem_fun(*this, &Editor::edit_mode_selection_done));
+       set_popdown_strings (edit_mode_selector, edit_mode_strings, true);
+       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_table);
 
-       mode_box->pack_start(edit_mode_selector);
-       mode_box->pack_start(mouse_mode_button_box);
-       
        mouse_mode_tearoff = manage (new TearOff (*mode_box));
        mouse_mode_tearoff->set_name ("MouseModeBase");
+       mouse_mode_tearoff->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->Detach.connect (bind (mem_fun(*this, &Editor::detach_tearoff), static_cast<Box*>(&toolbar_hbox), 
+       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 (bind (mem_fun(*this, &Editor::reattach_tearoff), static_cast<Box*> (&toolbar_hbox), 
+       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 (bind (mem_fun(*this, &Editor::detach_tearoff), static_cast<Box*>(&toolbar_hbox), 
+       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 (bind (mem_fun(*this, &Editor::reattach_tearoff), static_cast<Box*> (&toolbar_hbox), 
+       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);
+       mouse_gain_button.set_mode (false);
+       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");
        mouse_gain_button.set_name ("MouseModeButton");
        mouse_zoom_button.set_name ("MouseModeButton");
        mouse_timefx_button.set_name ("MouseModeButton");
        mouse_audition_button.set_name ("MouseModeButton");
-       mouse_note_button.set_name ("MouseModeButton");
-
-       ARDOUR_UI::instance()->tooltips().set_tip (mouse_move_button, _("Select/Move Objects"));
-       ARDOUR_UI::instance()->tooltips().set_tip (mouse_select_button, _("Select/Move Ranges"));
-       ARDOUR_UI::instance()->tooltips().set_tip (mouse_gain_button, _("Draw Gain Automation"));
-       ARDOUR_UI::instance()->tooltips().set_tip (mouse_zoom_button, _("Select Zoom Range"));
-       ARDOUR_UI::instance()->tooltips().set_tip (mouse_timefx_button, _("Stretch/Shrink Regions"));
-       ARDOUR_UI::instance()->tooltips().set_tip (mouse_audition_button, _("Listen to Specific Regions"));
-       ARDOUR_UI::instance()->tooltips().set_tip (mouse_note_button, _("Edit MIDI Notes"));
+       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);
@@ -2390,75 +2846,84 @@ Editor::setup_toolbar ()
        mouse_zoom_button.unset_flags (CAN_FOCUS);
        mouse_timefx_button.unset_flags (CAN_FOCUS);
        mouse_audition_button.unset_flags (CAN_FOCUS);
-       mouse_note_button.unset_flags (CAN_FOCUS);
-
-       mouse_select_button.signal_toggled().connect (bind (mem_fun(*this, &Editor::mouse_mode_toggled), Editing::MouseRange));
-       mouse_select_button.signal_button_release_event().connect (mem_fun(*this, &Editor::mouse_select_button_release));
-
-       mouse_move_button.signal_toggled().connect (bind (mem_fun(*this, &Editor::mouse_mode_toggled), Editing::MouseObject));
-       mouse_gain_button.signal_toggled().connect (bind (mem_fun(*this, &Editor::mouse_mode_toggled), Editing::MouseGain));
-       mouse_zoom_button.signal_toggled().connect (bind (mem_fun(*this, &Editor::mouse_mode_toggled), Editing::MouseZoom));
-       mouse_timefx_button.signal_toggled().connect (bind (mem_fun(*this, &Editor::mouse_mode_toggled), Editing::MouseTimeFX));
-       mouse_audition_button.signal_toggled().connect (bind (mem_fun(*this, &Editor::mouse_mode_toggled), Editing::MouseAudition));
-       mouse_note_button.signal_toggled().connect (bind (mem_fun(*this, &Editor::mouse_mode_toggled), Editing::MouseNote));
-
-       // mouse_move_button.set_active (true);
-       
+       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 (2);
+       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));
+       zoom_in_button.set_image (*(manage (new Image (Stock::ZOOM_IN, Gtk::ICON_SIZE_BUTTON))));
+       zoom_in_button.signal_clicked().connect (sigc::bind (sigc::mem_fun(*this, &Editor::temporal_zoom_step), false));
        ARDOUR_UI::instance()->tooltips().set_tip (zoom_in_button, _("Zoom In"));
-       
+
        zoom_out_button.set_name ("EditorTimeButton");
-       zoom_out_button.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));
+       zoom_out_button.set_image (*(manage (new Image (Stock::ZOOM_OUT, Gtk::ICON_SIZE_BUTTON))));
+       zoom_out_button.signal_clicked().connect (sigc::bind (sigc::mem_fun(*this, &Editor::temporal_zoom_step), true));
        ARDOUR_UI::instance()->tooltips().set_tip (zoom_out_button, _("Zoom Out"));
 
        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));
+       zoom_out_full_button.set_image (*(manage (new Image (Stock::ZOOM_100, Gtk::ICON_SIZE_BUTTON))));
+       zoom_out_full_button.signal_clicked().connect (sigc::mem_fun(*this, &Editor::temporal_zoom_session));
        ARDOUR_UI::instance()->tooltips().set_tip (zoom_out_full_button, _("Zoom to Session"));
 
        zoom_focus_selector.set_name ("ZoomFocusSelector");
-       Gtkmm2ext::set_size_request_to_display_given_text (zoom_focus_selector, "Center", FUDGE, 0);
-       set_popdown_strings (zoom_focus_selector, zoom_focus_strings);
-       zoom_focus_selector.signal_changed().connect (mem_fun(*this, &Editor::zoom_focus_selection_done));
+       set_popdown_strings (zoom_focus_selector, zoom_focus_strings, true);
+       zoom_focus_selector.signal_changed().connect (sigc::mem_fun(*this, &Editor::zoom_focus_selection_done));
        ARDOUR_UI::instance()->tooltips().set_tip (zoom_focus_selector, _("Zoom focus"));
 
-       zoom_box.pack_start (zoom_focus_selector, true, true);
        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);
 
-       /* Edit Cursor / Snap */
+       /* 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 (sigc::bind (sigc::mem_fun(*this, &Editor::tav_zoom_step), true));
+       ARDOUR_UI::instance()->tooltips().set_tip (tav_expand_button, _("Expand Tracks"));
+
+       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 (sigc::bind (sigc::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);
 
        snap_box.set_spacing (1);
        snap_box.set_border_width (2);
 
        snap_type_selector.set_name ("SnapTypeSelector");
-       Gtkmm2ext::set_size_request_to_display_given_text (snap_type_selector, "SMPTE Seconds", 2+FUDGE, 10);
-       set_popdown_strings (snap_type_selector, snap_type_strings);
-       snap_type_selector.signal_changed().connect (mem_fun(*this, &Editor::snap_type_selection_done));
-       ARDOUR_UI::instance()->tooltips().set_tip (snap_type_selector, _("Unit to snap cursors and ranges to"));
+       set_popdown_strings (snap_type_selector, snap_type_strings, true);
+       snap_type_selector.signal_changed().connect (sigc::mem_fun(*this, &Editor::snap_type_selection_done));
+       ARDOUR_UI::instance()->tooltips().set_tip (snap_type_selector, _("Snap/Grid Units"));
 
        snap_mode_selector.set_name ("SnapModeSelector");
-       Gtkmm2ext::set_size_request_to_display_given_text (snap_mode_selector, "Magnetic Snap", 2+FUDGE, 10);
-       set_popdown_strings (snap_mode_selector, snap_mode_strings);
-       snap_mode_selector.signal_changed().connect (mem_fun(*this, &Editor::snap_mode_selection_done));
+       set_popdown_strings (snap_mode_selector, snap_mode_strings, true);
+       snap_mode_selector.signal_changed().connect (sigc::mem_fun(*this, &Editor::snap_mode_selection_done));
+       ARDOUR_UI::instance()->tooltips().set_tip (snap_mode_selector, _("Snap/Grid Mode"));
+
+       edit_point_selector.set_name ("EditPointSelector");
+       set_popdown_strings (edit_point_selector, edit_point_strings, true);
+       edit_point_selector.signal_changed().connect (sigc::mem_fun(*this, &Editor::edit_point_selection_done));
+       ARDOUR_UI::instance()->tooltips().set_tip (edit_point_selector, _("Edit point"));
 
-       snap_box.pack_start (edit_cursor_clock, false, false);
        snap_box.pack_start (snap_mode_selector, false, false);
        snap_box.pack_start (snap_type_selector, false, false);
-
+       snap_box.pack_start (edit_point_selector, false, false);
 
        /* Nudge */
 
@@ -2466,8 +2931,8 @@ Editor::setup_toolbar ()
        nudge_box->set_spacing(1);
        nudge_box->set_border_width (2);
 
-       nudge_forward_button.signal_clicked().connect (bind (mem_fun(*this, &Editor::nudge_forward), false));
-       nudge_backward_button.signal_clicked().connect (bind (mem_fun(*this, &Editor::nudge_backward), false));
+       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);
@@ -2476,19 +2941,24 @@ Editor::setup_toolbar ()
 
        /* Pack everything in... */
 
-       HBox* hbox = new HBox;
+       HBox* hbox = manage (new HBox);
        hbox->set_spacing(10);
 
-       tools_tearoff = new TearOff (*hbox);
+       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->Detach.connect (bind (mem_fun(*this, &Editor::detach_tearoff), static_cast<Box*>(&toolbar_hbox), 
+       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 (bind (mem_fun(*this, &Editor::reattach_tearoff), static_cast<Box*> (&toolbar_hbox), 
+       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 (bind (mem_fun(*this, &Editor::detach_tearoff), static_cast<Box*>(&toolbar_hbox), 
+       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 (bind (mem_fun(*this, &Editor::reattach_tearoff), static_cast<Box*> (&toolbar_hbox), 
+       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);
@@ -2497,13 +2967,12 @@ Editor::setup_toolbar ()
        toolbar_hbox.pack_start (*mouse_mode_tearoff, false, false);
        toolbar_hbox.pack_start (*tools_tearoff, false, false);
 
-       
        hbox->pack_start (snap_box, false, false);
-       // hbox->pack_start (zoom_box, false, false); 
        hbox->pack_start (*nudge_box, false, false);
+       hbox->pack_start (panic_box, false, false);
 
        hbox->show_all ();
-       
+
        toolbar_base.set_name ("ToolBarBase");
        toolbar_base.add (toolbar_hbox);
 
@@ -2512,24 +2981,56 @@ Editor::setup_toolbar ()
        toolbar_frame.add (toolbar_base);
 }
 
+void
+Editor::midi_panic ()
+{
+       cerr << "MIDI panic\n";
+
+       if (_session) {
+               _session->midi_panic();
+       }
+}
+
+void
+Editor::setup_midi_toolbar ()
+{
+       RefPtr<Action> act;
+
+       /* Midi sound notes */
+       midi_sound_notes.add (*(manage (new Image (::get_icon("midi_sound_notes")))));
+       midi_sound_notes.set_relief(Gtk::RELIEF_NONE);
+       ARDOUR_UI::instance()->tooltips().set_tip (midi_sound_notes, _("Sound Notes"));
+       midi_sound_notes.unset_flags (CAN_FOCUS);
+
+       /* Panic */
+
+       act = ActionManager::get_action (X_("MIDI"), X_("panic"));
+       midi_panic_button.set_name("MidiPanicButton");
+       ARDOUR_UI::instance()->tooltips().set_tip (midi_panic_button, _("Send note off and reset controller messages on all MIDI channels"));
+       act->connect_proxy (midi_panic_button);
+
+       panic_box.pack_start (midi_sound_notes , true, true);
+       panic_box.pack_start (midi_panic_button, true, true);
+}
+
 int
-Editor::convert_drop_to_paths (vector<ustring>& paths, 
-                              const RefPtr<Gdk::DragContext>& context,
-                              gint                x,
-                              gint                y,
-                              const SelectionData& data,
-                              guint               info,
-                              guint               time)                               
-
-{      
-       if (session == 0) {
+Editor::convert_drop_to_paths (
+               vector<ustring>&                paths,
+               const RefPtr<Gdk::DragContext>& /*context*/,
+               gint                            /*x*/,
+               gint                            /*y*/,
+               const SelectionData&            data,
+               guint                           /*info*/,
+               guint                           /*time*/)
+{
+       if (_session == 0) {
                return -1;
        }
 
        vector<ustring> uris = data.get_uris();
 
        if (uris.empty()) {
-               
+
                /* This is seriously fucked up. Nautilus doesn't say that its URI lists
                   are actually URI lists. So do it by hand.
                */
@@ -2537,31 +3038,39 @@ Editor::convert_drop_to_paths (vector<ustring>& paths,
                if (data.get_target() != "text/plain") {
                        return -1;
                }
-  
-               /* Parse the "uri-list" format that Nautilus provides, 
-                  where each pathname is delimited by \r\n
+
+               /* Parse the "uri-list" format that Nautilus provides,
+                  where each pathname is delimited by \r\n.
+
+                  THERE MAY BE NO NULL TERMINATING CHAR!!!
                */
-       
-               const char* p = data.get_text().c_str();
+
+               ustring txt = data.get_text();
+               const char* p;
                const char* q;
 
+               p = (const char *) malloc (txt.length() + 1);
+               txt.copy ((char *) p, txt.length(), 0);
+               ((char*)p)[txt.length()] = '\0';
+
                while (p)
                {
                        if (*p != '#')
                        {
                                while (g_ascii_isspace (*p))
                                        p++;
-                               
+
                                q = p;
-                               while (*q && (*q != '\n') && (*q != '\r'))
+                               while (*q && (*q != '\n') && (*q != '\r')) {
                                        q++;
-                               
+                               }
+
                                if (q > p)
                                {
                                        q--;
                                        while (q > p && g_ascii_isspace (*q))
                                                q--;
-                                       
+
                                        if (q > p)
                                        {
                                                uris.push_back (ustring (p, q - p + 1));
@@ -2573,16 +3082,42 @@ Editor::convert_drop_to_paths (vector<ustring>& paths,
                                p++;
                }
 
+               free ((void*)p);
+
                if (uris.empty()) {
                        return -1;
                }
        }
-       
+
        for (vector<ustring>::iterator i = uris.begin(); i != uris.end(); ++i) {
+
                if ((*i).substr (0,7) == "file://") {
-                       string p = *i;
-                        PBD::url_decode (p);
-                       paths.push_back (p.substr (7));
+
+                       ustring 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();
+
+                       while (slashcnt < 3 && x != p.end()) {
+                               if ((*x) == '/') {
+                                       slashcnt++;
+                               } else if (slashcnt == 3) {
+                                       break;
+                               }
+                               ++n;
+                               ++x;
+                       }
+
+                       if (slashcnt != 3 || x == p.end()) {
+                               error << _("malformed URL passed to drag-n-drop code") << endmsg;
+                               continue;
+                       }
+
+                       paths.push_back (p.substr (n - 1));
                }
        }
 
@@ -2598,9 +3133,9 @@ 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->transport_stopped()) {
                have_pending_keyboard_selection = false;
        }
 
@@ -2609,9 +3144,9 @@ Editor::map_transport_state ()
 
 /* UNDO/REDO */
 
-Editor::State::State ()
+Editor::State::State (PublicEditor const * e)
 {
-       selection = new Selection;
+       selection = new Selection (e);
 }
 
 Editor::State::~State ()
@@ -2619,145 +3154,139 @@ Editor::State::~State ()
        delete selection;
 }
 
-UndoAction
-Editor::get_memento () const
-{
-       State *state = new State;
-
-       store_state (*state);
-       return bind (mem_fun (*(const_cast<Editor*>(this)), &Editor::restore_state), state);
-}
-
-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) {
+               before = &get_state();
+               _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 (new MementoCommand<Editor>(*this, before, &get_state()));
        }
 }
 
 void
-Editor::set_edit_group_solo (Route& route, bool yn)
+Editor::set_route_group_solo (Route& route, bool yn)
 {
-       RouteGroup *edit_group;
+       RouteGroup *route_group;
 
-       if ((edit_group = route.edit_group()) != 0) {
-               edit_group->apply (&Route::set_solo, yn, this);
+       if ((route_group = route.route_group()) != 0) {
+               route_group->apply (&Route::set_solo, yn, this);
        } else {
                route.set_solo (yn, this);
        }
 }
 
 void
-Editor::set_edit_group_mute (Route& route, bool yn)
+Editor::set_route_group_mute (Route& route, bool yn)
 {
-       RouteGroup *edit_group = 0;
+       RouteGroup *route_group = 0;
 
-       if ((edit_group == route.edit_group()) != 0) {
-               edit_group->apply (&Route::set_mute, yn, this);
+       if ((route_group == route.route_group()) != 0) {
+               route_group->apply (&Route::set_mute, yn, this);
        } else {
                route.set_mute (yn, this);
        }
 }
-               
+
 void
 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;
        }
 }
 
 void
-Editor::duplicate_dialog (bool dup_region)
+Editor::duplicate_dialog (bool with_dialog)
 {
-       if (selection->regions.empty() && (selection->time.length() == 0)) {
-               return;
+       float times = 1.0f;
+
+       if (mouse_mode == MouseRange) {
+               if (selection->time.length() == 0) {
+                       return;
+               }
        }
 
-       ArdourDialog win ("duplicate dialog");
-       Label  label (_("Duplicate how many times?"));
-       Adjustment adjustment (1.0, 1.0, 1000000.0, 1.0, 5.0);
-       SpinButton spinner (adjustment);
+       RegionSelection rs;
+       get_regions_for_action (rs);
 
-       win.get_vbox()->set_spacing (12);
-       win.get_vbox()->pack_start (label);
+       if (mouse_mode != MouseRange) {
 
-       /* dialogs have ::add_action_widget() but that puts the spinner in the wrong
-          place, visually. so do this by hand.
-       */
+               if (rs.empty()) {
+                       return;
+               }
+       }
 
-       win.get_vbox()->pack_start (spinner);
-       spinner.signal_activate().connect (sigc::bind (mem_fun (win, &ArdourDialog::response), RESPONSE_ACCEPT));
+       if (with_dialog) {
 
-       label.show ();
-       spinner.show ();
+               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;
 
-       win.add_button (Stock::OK, RESPONSE_ACCEPT);
-       win.add_button (Stock::CANCEL, RESPONSE_CANCEL);
+               win.get_vbox()->set_spacing (12);
+               win.get_vbox()->pack_start (hbox);
+               hbox.set_border_width (6);
+               hbox.pack_start (label, PACK_EXPAND_PADDING, 12);
 
-       win.set_position (WIN_POS_MOUSE);
+               /* dialogs have ::add_action_widget() but that puts the spinner in the wrong
+                  place, visually. so do this by hand.
+               */
 
-       spinner.grab_focus ();
+               hbox.pack_start (spinner, PACK_EXPAND_PADDING, 12);
+               spinner.signal_activate().connect (sigc::bind (sigc::mem_fun (win, &ArdourDialog::response), RESPONSE_ACCEPT));
+               spinner.grab_focus();
 
-       switch (win.run ()) {
-       case RESPONSE_ACCEPT:
-               break;
-       default:
-               return;
-       }
+               hbox.show ();
+               label.show ();
+               spinner.show ();
 
-       float times = adjustment.get_value();
+               win.add_button (Stock::CANCEL, RESPONSE_CANCEL);
+               win.add_button (_("Duplicate"), RESPONSE_ACCEPT);
+               win.set_default_response (RESPONSE_ACCEPT);
 
-       if (!selection->regions.empty()) {
-               duplicate_some_regions (selection->regions, times);
-       } else {
+               win.set_position (WIN_POS_MOUSE);
+
+               spinner.grab_focus ();
+
+               switch (win.run ()) {
+               case RESPONSE_ACCEPT:
+                       break;
+               default:
+                       return;
+               }
+
+               times = adjustment.get_value();
+       }
+
+       if (mouse_mode == MouseRange) {
                duplicate_selection (times);
+       } else {
+               duplicate_some_regions (rs, times);
        }
 }
 
@@ -2776,15 +3305,53 @@ Editor::hide_verbose_canvas_cursor ()
        verbose_cursor_visible = false;
 }
 
+double
+Editor::clamp_verbose_cursor_x (double x)
+{
+       if (x < 0) {
+               x = 0;
+       } else {
+               x = min (_canvas_width - 200.0, x);
+       }
+       return x;
+}
+
+double
+Editor::clamp_verbose_cursor_y (double y)
+{
+       if (y < canvas_timebars_vsize) {
+               y = canvas_timebars_vsize;
+       } else {
+               y = min (_canvas_height - 50, y);
+       }
+       return y;
+}
+
+void
+Editor::show_verbose_canvas_cursor_with (const string & txt)
+{
+       verbose_canvas_cursor->property_text() = txt.c_str();
+
+       int x, y;
+       double wx, wy;
+
+       track_canvas->get_pointer (x, y);
+       track_canvas->window_to_world (x, y, wx, wy);
+
+       /* don't get too close to the edge */
+       verbose_canvas_cursor->property_x() = clamp_verbose_cursor_x (wx);
+       verbose_canvas_cursor->property_y() = clamp_verbose_cursor_y (wy);
+
+       show_verbose_canvas_cursor ();
+}
+
 void
 Editor::set_verbose_canvas_cursor (const string & txt, double x, double y)
 {
-       /* XXX get origin of canvas relative to root window,
-          add x and y and check compared to gdk_screen_{width,height}
-       */
        verbose_canvas_cursor->property_text() = txt.c_str();
-       verbose_canvas_cursor->property_x() = x;
-       verbose_canvas_cursor->property_y() = y;
+       /* don't get too close to the edge */
+       verbose_canvas_cursor->property_x() = clamp_verbose_cursor_x (x);
+       verbose_canvas_cursor->property_y() = clamp_verbose_cursor_y (y);
 }
 
 void
@@ -2793,10 +3360,36 @@ Editor::set_verbose_canvas_cursor_text (const string & txt)
        verbose_canvas_cursor->property_text() = txt.c_str();
 }
 
+void
+Editor::set_edit_mode (EditMode m)
+{
+       Config->set_edit_mode (m);
+}
+
+void
+Editor::cycle_edit_mode ()
+{
+       switch (Config->get_edit_mode()) {
+       case Slide:
+               if (Profile->get_sae()) {
+                       Config->set_edit_mode (Lock);
+               } else {
+                       Config->set_edit_mode (Splice);
+               }
+               break;
+       case Splice:
+               Config->set_edit_mode (Lock);
+               break;
+       case Lock:
+               Config->set_edit_mode (Slide);
+               break;
+       }
+}
+
 void
 Editor::edit_mode_selection_done ()
 {
-       if (session == 0) {
+       if (_session == 0) {
                return;
        }
 
@@ -2807,16 +3400,18 @@ Editor::edit_mode_selection_done ()
                mode = Splice;
        } else if (choice == _("Slide Edit")) {
                mode = Slide;
+       } else if (choice == _("Lock Edit")) {
+               mode = Lock;
        }
 
        Config->set_edit_mode (mode);
-}      
+}
 
 void
 Editor::snap_type_selection_done ()
 {
        string choice = snap_type_selector.get_active_text();
-       SnapType snaptype = SnapToFrame;
+       SnapType snaptype = SnapToBeat;
 
        if (choice == _("Beats/3")) {
                snaptype = SnapToAThirdBeat;
@@ -2834,8 +3429,6 @@ Editor::snap_type_selection_done ()
                snaptype = SnapToBar;
        } else if (choice == _("Marks")) {
                snaptype = SnapToMark;
-       } else if (choice == _("Edit Cursor")) {
-               snaptype = SnapToEditCursor;
        } else if (choice == _("Region starts")) {
                snaptype = SnapToRegionStart;
        } else if (choice == _("Region ends")) {
@@ -2846,25 +3439,23 @@ Editor::snap_type_selection_done ()
                snaptype = SnapToRegionSync;
        } else if (choice == _("CD Frames")) {
                snaptype = SnapToCDFrame;
-       } else if (choice == _("SMPTE Frames")) {
-               snaptype = SnapToSMPTEFrame;
-       } else if (choice == _("SMPTE Seconds")) {
-               snaptype = SnapToSMPTESeconds;
-       } else if (choice == _("SMPTE Minutes")) {
-               snaptype = SnapToSMPTEMinutes;
+       } else if (choice == _("Timecode Frames")) {
+               snaptype = SnapToTimecodeFrame;
+       } else if (choice == _("Timecode Seconds")) {
+               snaptype = SnapToTimecodeSeconds;
+       } else if (choice == _("Timecode Minutes")) {
+               snaptype = SnapToTimecodeMinutes;
        } else if (choice == _("Seconds")) {
                snaptype = SnapToSeconds;
        } else if (choice == _("Minutes")) {
                snaptype = SnapToMinutes;
-       } else if (choice == _("None")) {
-               snaptype = SnapToFrame;
        }
 
        RefPtr<RadioAction> ract = snap_type_action (snaptype);
        if (ract) {
                ract->set_active ();
        }
-}      
+}
 
 void
 Editor::snap_mode_selection_done ()
@@ -2872,7 +3463,9 @@ Editor::snap_mode_selection_done ()
        string choice = snap_mode_selector.get_active_text();
        SnapMode mode = SnapNormal;
 
-       if (choice == _("Normal")) {
+       if (choice == _("No Grid")) {
+               mode = SnapOff;
+       } else if (choice == _("Grid")) {
                mode = SnapNormal;
        } else if (choice == _("Magnetic")) {
                mode = SnapMagnetic;
@@ -2885,6 +3478,47 @@ Editor::snap_mode_selection_done ()
        }
 }
 
+void
+Editor::cycle_edit_point (bool with_marker)
+{
+       switch (_edit_point) {
+       case EditAtMouse:
+               set_edit_point_preference (EditAtPlayhead);
+               break;
+       case EditAtPlayhead:
+               if (with_marker) {
+                       set_edit_point_preference (EditAtSelectedMarker);
+               } else {
+                       set_edit_point_preference (EditAtMouse);
+               }
+               break;
+       case EditAtSelectedMarker:
+               set_edit_point_preference (EditAtMouse);
+               break;
+       }
+}
+
+void
+Editor::edit_point_selection_done ()
+{
+       string choice = edit_point_selector.get_active_text();
+       EditPoint ep = EditAtSelectedMarker;
+
+       if (choice == _("Marker")) {
+               set_edit_point_preference (EditAtSelectedMarker);
+       } else if (choice == _("Playhead")) {
+               set_edit_point_preference (EditAtPlayhead);
+       } else {
+               set_edit_point_preference (EditAtMouse);
+       }
+
+       RefPtr<RadioAction> ract = edit_point_action (ep);
+
+       if (ract) {
+               ract->set_active (true);
+       }
+}
+
 void
 Editor::zoom_focus_selection_done ()
 {
@@ -2897,18 +3531,20 @@ 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")) {
+       } else if (choice == _("Mouse")) {
+               focus_type = ZoomFocusMouse;
+       } else if (choice == _("Edit point")) {
                focus_type = ZoomFocusEdit;
-       } 
-       
+       }
+
        RefPtr<RadioAction> ract = zoom_focus_action (focus_type);
 
        if (ract) {
                ract->set_active ();
        }
-}      
+}
 
 gint
 Editor::edit_controls_button_release (GdkEventButton* ev)
@@ -2931,44 +3567,6 @@ Editor::mouse_select_button_release (GdkEventButton* ev)
        return true;
 }
 
-Editor::TrackViewList *
-Editor::get_valid_views (TimeAxisView* track, RouteGroup* group)
-{
-       TrackViewList *v;
-       TrackViewList::iterator i;
-
-       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->is_active())) {
-               
-               /* just the view for this track
-                */
-
-               v->push_back (track);
-
-       } else {
-               
-               /* views for all tracks in the edit group */
-               
-               for (i  = track_views.begin(); i != track_views.end (); ++i) {
-
-                       if (group == 0 || (*i)->edit_group() == group) {
-                               v->push_back (*i);
-                       }
-               }
-       }
-       
-       return v;
-}
-
 void
 Editor::set_zoom_focus (ZoomFocus f)
 {
@@ -2977,7 +3575,7 @@ Editor::set_zoom_focus (ZoomFocus f)
        if (str != zoom_focus_selector.get_active_text()) {
                zoom_focus_selector.set_active_text (str);
        }
-       
+
        if (zoom_focus != f) {
                zoom_focus = f;
 
@@ -2993,7 +3591,7 @@ Editor::ensure_float (Window& win)
        win.set_transient_for (*this);
 }
 
-void 
+void
 Editor::pane_allocation_handler (Allocation &alloc, Paned* which)
 {
        /* recover or initialize pane positions. do this here rather than earlier because
@@ -3008,12 +3606,23 @@ Editor::pane_allocation_handler (Allocation &alloc, Paned* which)
        static int32_t done;
        XMLNode* geometry;
 
-       if ((geometry = find_named_node (*node, "geometry")) == 0) {
-               width = default_width;
-               height = default_height;
-       } else {
-               width = atoi(geometry->property("x_size")->value());
-               height = atoi(geometry->property("y_size")->value());
+       width = default_width;
+       height = default_height;
+
+       if ((geometry = find_named_node (*node, "geometry")) != 0) {
+
+               if ((prop = geometry->property ("x_size")) == 0) {
+                       prop = geometry->property ("x-size");
+               }
+               if (prop) {
+                       width = atoi (prop->value());
+               }
+               if ((prop = geometry->property ("y_size")) == 0) {
+                       prop = geometry->property ("y-size");
+               }
+               if (prop) {
+                       height = atoi (prop->value());
+               }
        }
 
        if (which == static_cast<Paned*> (&edit_pane)) {
@@ -3022,14 +3631,14 @@ Editor::pane_allocation_handler (Allocation &alloc, Paned* which)
                        return;
                }
 
-               if (!geometry || (prop = geometry->property ("edit_pane_pos")) == 0) {
+               if (!geometry || (prop = geometry->property ("edit-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);
                } else {
                        pos = atoi (prop->value());
                }
-               
+
                if ((done = GTK_WIDGET(edit_pane.gobj())->allocation.width > pos)) {
                        edit_pane.set_position (pos);
                        pre_maximal_pane_position = pos;
@@ -3038,17 +3647,20 @@ Editor::pane_allocation_handler (Allocation &alloc, Paned* which)
 }
 
 void
-Editor::detach_tearoff (Box* b, Window* w)
+Editor::detach_tearoff (Box* /*b*/, Window* /*w*/)
 {
-       if (tools_tearoff->torn_off() && 
+       cerr << "remove tearoff\n";
+
+       if (tools_tearoff->torn_off() &&
            mouse_mode_tearoff->torn_off()) {
                top_hbox.remove (toolbar_frame);
        }
 }
 
 void
-Editor::reattach_tearoff (Box* b, Window* w, int32_t n)
+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);
        }
@@ -3061,6 +3673,8 @@ Editor::set_show_measures (bool yn)
                hide_measures ();
 
                if ((_show_measures = yn) == true) {
+                       if (tempo_lines)
+                               tempo_lines->show();
                        draw_measures ();
                }
                instant_save ();
@@ -3116,17 +3730,17 @@ 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);
-       
+
        switch (cew.run ()) {
        case RESPONSE_ACCEPT:
                break;
        default:
                return;
        }
-       
+
        cew.apply ();
        xfade->StateChanged (Change (~0));
 }
@@ -3137,35 +3751,91 @@ Editor::playlist_selector () const
        return *_playlist_selector;
 }
 
-nframes_t
-Editor::get_nudge_distance (nframes_t pos, nframes_t& next)
+Evoral::MusicalTime
+Editor::get_grid_type_as_beats (bool& success, nframes64_t position)
 {
-       nframes_t ret;
+       success = true;
 
-       ret = nudge_clock.current_duration (pos);
-       next = ret + 1; /* XXXX fix me */
+       switch (_snap_type) {
+       case SnapToBeat:
+               return 1.0;
+               break;
 
-       return ret;
-}
+       case SnapToAThirtysecondBeat:
+               return 1.0/32.0;
+               break;
 
-void
-Editor::end_location_changed (Location* location)
-{
-       ENSURE_GUI_THREAD (bind (mem_fun(*this, &Editor::end_location_changed), location));
-       reset_scrolling_region ();
-}
+       case SnapToASixteenthBeat:
+               return 1.0/16.0;
+               break;
 
-int
-Editor::playlist_deletion_dialog (boost::shared_ptr<Playlist> pl)
-{
-       ArdourDialog dialog ("playlist deletion dialog");
-       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."),
-                                     pl->name()));
-       
-       dialog.set_position (WIN_POS_CENTER);
-       dialog.get_vbox()->pack_start (label);
+       case SnapToAEighthBeat:
+               return 1.0/8.0;
+               break;
+
+       case SnapToAQuarterBeat:
+               return 1.0/4.0;
+               break;
+
+       case SnapToAThirdBeat:
+               return 1.0/3.0;
+               break;
+
+       case SnapToBar:
+               if (_session) {
+                       return _session->tempo_map().meter_at (position).beats_per_bar();
+               }
+               break;
+
+       case SnapToCDFrame:
+       case SnapToTimecodeFrame:
+       case SnapToTimecodeSeconds:
+       case SnapToTimecodeMinutes:
+       case SnapToSeconds:
+       case SnapToMinutes:
+       case SnapToRegionStart:
+       case SnapToRegionEnd:
+       case SnapToRegionSync:
+       case SnapToRegionBoundary:
+       default:
+               success = false;
+               break;
+       }
+
+       return 0.0;
+}
+
+nframes64_t
+Editor::get_nudge_distance (nframes64_t pos, nframes64_t& next)
+{
+       nframes64_t ret;
+
+       ret = nudge_clock.current_duration (pos);
+       next = ret + 1; /* XXXX fix me */
+
+       return ret;
+}
+
+void
+Editor::end_location_changed (Location* location)
+{
+       ENSURE_GUI_THREAD (*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");
+       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."),
+                                     pl->name()));
+
+       dialog.set_position (WIN_POS_CENTER);
+       dialog.get_vbox()->pack_start (label);
 
        label.show ();
 
@@ -3192,7 +3862,7 @@ Editor::playlist_deletion_dialog (boost::shared_ptr<Playlist> pl)
 }
 
 bool
-Editor::audio_region_selection_covers (nframes_t where)
+Editor::audio_region_selection_covers (nframes64_t where)
 {
        for (RegionSelection::iterator a = selection->regions.begin(); a != selection->regions.end(); ++a) {
                if ((*a)->region()->covers (where)) {
@@ -3211,13 +3881,21 @@ Editor::prepare_for_cleanup ()
 
        selection->clear_regions ();
        selection->clear_playlists ();
+
+       _regions->suspend_redisplay ();
+}
+
+void
+Editor::finish_cleanup ()
+{
+       _regions->resume_redisplay ();
 }
 
 Location*
 Editor::transport_loop_location()
 {
-       if (session) {
-               return session->locations()->auto_loop_location();
+       if (_session) {
+               return _session->locations()->auto_loop_location();
        } else {
                return 0;
        }
@@ -3226,8 +3904,8 @@ 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;
        }
@@ -3236,6 +3914,10 @@ 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 ();
@@ -3245,7 +3927,7 @@ Editor::control_layout_scroll (GdkEventScroll* ev)
        case GDK_SCROLL_DOWN:
                scroll_tracks_down_line ();
                return true;
-               
+
        default:
                /* no left/right handling yet */
                break;
@@ -3254,165 +3936,18 @@ Editor::control_layout_scroll (GdkEventScroll* ev)
        return false;
 }
 
-
-/** A new snapshot has been selected.
- */
-void
-Editor::snapshot_display_selection_changed ()
-{
-       if (snapshot_display.get_selection()->count_selected_rows() > 0) {
-
-               TreeModel::iterator i = snapshot_display.get_selection()->get_selected();
-               
-               Glib::ustring snap_name = (*i)[snapshot_display_columns.real_name];
-
-               if (snap_name.length() == 0) {
-                       return;
-               }
-               
-               if (session->snap_name() == snap_name) {
-                       return;
-               }
-               
-               ARDOUR_UI::instance()->load_session(session->path(), string (snap_name));
-       }
-}
-
-bool
-Editor::snapshot_display_button_press (GdkEventButton* ev)
-{
-       if (ev->button == 3) {
-               /* Right-click on the snapshot list. Work out which snapshot it
-                  was over. */
-               Gtk::TreeModel::Path path;
-               Gtk::TreeViewColumn* col;
-               int cx;
-               int cy;
-               snapshot_display.get_path_at_pos ((int) ev->x, (int) ev->y, path, col, cx, cy);
-               Gtk::TreeModel::iterator iter = snapshot_display_model->get_iter (path);
-               if (iter) {
-                       Gtk::TreeModel::Row row = *iter;
-                       popup_snapshot_context_menu (ev->button, ev->time, row[snapshot_display_columns.real_name]);
-               }
-               return true;
-       }
-
-       return false;
-}
-
-
-/** Pop up the snapshot display context menu.
- * @param button Button used to open the menu.
- * @param time Menu open time.
- * @snapshot_name Name of the snapshot that the menu click was over.
- */
-
-void
-Editor::popup_snapshot_context_menu (int button, int32_t time, Glib::ustring snapshot_name)
-{
-       using namespace Menu_Helpers;
-
-       MenuList& items (snapshot_context_menu.items());
-       items.clear ();
-
-       const bool modification_allowed = (session->snap_name() != snapshot_name && session->name() != snapshot_name);
-
-       add_item_with_sensitivity (items, MenuElem (_("Remove"), bind (mem_fun (*this, &Editor::remove_snapshot), snapshot_name)), modification_allowed);
-
-       add_item_with_sensitivity (items, MenuElem (_("Rename"), bind (mem_fun (*this, &Editor::rename_snapshot), snapshot_name)), modification_allowed);
-
-       snapshot_context_menu.popup (button, time);
-}
-
-void
-Editor::rename_snapshot (Glib::ustring old_name)
-{
-       ArdourPrompter prompter(true);
-
-       string new_name;
-
-       prompter.set_name ("Prompter");
-       prompter.add_button (Gtk::Stock::SAVE, Gtk::RESPONSE_ACCEPT);
-       prompter.set_prompt (_("New name of snapshot"));
-       prompter.set_initial_text (old_name);
-       
-       if (prompter.run() == RESPONSE_ACCEPT) {
-               prompter.get_result (new_name);
-               if (new_name.length()) {
-                       session->rename_state (old_name, new_name);
-                       redisplay_snapshots ();
-               }
-       }
-}
-
-
-void
-Editor::remove_snapshot (Glib::ustring name)
-{
-       vector<string> choices;
-
-       std::string prompt  = string_compose (_("Do you really want to remove snapshot \"%1\" ?\n(cannot be undone)"), name);
-
-       choices.push_back (_("No, do nothing."));
-       choices.push_back (_("Yes, remove it."));
-
-       Gtkmm2ext::Choice prompter (prompt, choices);
-
-       if (prompter.run () == 1) {
-               session->remove_state (name);
-               redisplay_snapshots ();
-       }
-}
-
-void
-Editor::redisplay_snapshots ()
-{
-       if (session == 0) {
-               return;
-       }
-
-       vector<string*>* states;
-
-       if ((states = session->possible_states()) == 0) {
-               return;
-       }
-
-       snapshot_display_model->clear ();
-
-       for (vector<string*>::iterator i = states->begin(); i != states->end(); ++i) {
-               string statename = *(*i);
-               TreeModel::Row row = *(snapshot_display_model->append());
-               
-               /* this lingers on in case we ever want to change the visible
-                  name of the snapshot.
-               */
-               
-               string display_name;
-               display_name = statename;
-
-               if (statename == session->snap_name()) {
-                       snapshot_display.get_selection()->select(row);
-               } 
-               
-               row[snapshot_display_columns.visible_name] = display_name;
-               row[snapshot_display_columns.real_name] = statename;
-       }
-
-       delete states;
-}
-
 void
 Editor::session_state_saved (string snap_name)
 {
-       ENSURE_GUI_THREAD (bind (mem_fun(*this, &Editor::session_state_saved), snap_name));
-       redisplay_snapshots ();
+       ENSURE_GUI_THREAD (*this, &Editor::session_state_saved, snap_name);
+       
+       update_title ();        
+       _snapshots->redisplay ();
 }
 
 void
 Editor::maximise_editing_space ()
 {
-       initial_ruler_update_required = true;
-
        mouse_mode_tearoff->set_visible (false);
        tools_tearoff->set_visible (false);
 
@@ -3423,10 +3958,10 @@ Editor::maximise_editing_space ()
                post_maximal_pane_position = edit_pane.get_width();
        }
 
-
        fullscreen();
+
        if(post_maximal_editor_width) {
-               edit_pane.set_position (post_maximal_pane_position - 
+               edit_pane.set_position (post_maximal_pane_position -
                        abs(post_maximal_editor_width - pre_maximal_editor_width));
        } else {
                edit_pane.set_position (post_maximal_pane_position);
@@ -3436,9 +3971,8 @@ Editor::maximise_editing_space ()
 void
 Editor::restore_editing_space ()
 {
-       initial_ruler_update_required = true;
-
        // user changed width of pane during fullscreen
+
        if(post_maximal_pane_position != edit_pane.get_position()) {
                post_maximal_pane_position = edit_pane.get_position();
        }
@@ -3449,50 +3983,70 @@ Editor::restore_editing_space ()
        tools_tearoff->set_visible (true);
        post_maximal_editor_width = this->get_width();
 
-
-       edit_pane.set_position (
-               pre_maximal_pane_position + abs(this->get_width() - pre_maximal_editor_width)
-       );
+       edit_pane.set_position (pre_maximal_pane_position + abs(this->get_width() - pre_maximal_editor_width));
 }
 
-void 
-Editor::new_playlists ()
+/**
+ *  Make new playlists for a given track and also any others that belong
+ *  to the same active route group with the `edit' property.
+ *  @param v Track.
+ */
+
+void
+Editor::new_playlists (TimeAxisView* v)
 {
        begin_reversible_command (_("new playlists"));
-       mapover_tracks (mem_fun (*this, &Editor::mapped_use_new_playlist));
+       vector<boost::shared_ptr<ARDOUR::Playlist> > playlists;
+       _session->playlists->get (playlists);
+       mapover_tracks (sigc::bind (sigc::mem_fun (*this, &Editor::mapped_use_new_playlist), playlists), v, RouteGroup::Edit);
        commit_reversible_command ();
 }
 
+/**
+ *  Use a copy of the current playlist for a given track and also any others that belong
+ *  to the same active route group with the `edit' property.
+ *  @param v Track.
+ */
+
 void
-Editor::copy_playlists ()
+Editor::copy_playlists (TimeAxisView* v)
 {
        begin_reversible_command (_("copy playlists"));
-       mapover_tracks (mem_fun (*this, &Editor::mapped_use_copy_playlist));
+       vector<boost::shared_ptr<ARDOUR::Playlist> > playlists;
+       _session->playlists->get (playlists);
+       mapover_tracks (sigc::bind (sigc::mem_fun (*this, &Editor::mapped_use_copy_playlist), playlists), v, RouteGroup::Edit);
        commit_reversible_command ();
 }
 
-void 
-Editor::clear_playlists ()
+/** Clear the current playlist for a given track and also any others that belong
+ *  to the same active route group with the `edit' property.
+ *  @param v Track.
+ */
+
+void
+Editor::clear_playlists (TimeAxisView* v)
 {
        begin_reversible_command (_("clear playlists"));
-       mapover_tracks (mem_fun (*this, &Editor::mapped_clear_playlist));
+       vector<boost::shared_ptr<ARDOUR::Playlist> > playlists;
+       _session->playlists->get (playlists);
+       mapover_tracks (sigc::mem_fun (*this, &Editor::mapped_clear_playlist), v, RouteGroup::Edit);
        commit_reversible_command ();
 }
 
-void 
-Editor::mapped_use_new_playlist (RouteTimeAxisView& atv, uint32_t sz)
+void
+Editor::mapped_use_new_playlist (RouteTimeAxisView& atv, uint32_t sz, vector<boost::shared_ptr<ARDOUR::Playlist> > const & playlists)
 {
-       atv.use_new_playlist (sz > 1 ? false : true);
+       atv.use_new_playlist (sz > 1 ? false : true, playlists);
 }
 
 void
-Editor::mapped_use_copy_playlist (RouteTimeAxisView& atv, uint32_t sz)
+Editor::mapped_use_copy_playlist (RouteTimeAxisView& atv, uint32_t sz, vector<boost::shared_ptr<ARDOUR::Playlist> > const & playlists)
 {
-       atv.use_copy_playlist (sz > 1 ? false : true);
+       atv.use_copy_playlist (sz > 1 ? false : true, playlists);
 }
 
-void 
-Editor::mapped_clear_playlist (RouteTimeAxisView& atv, uint32_t sz)
+void
+Editor::mapped_clear_playlist (RouteTimeAxisView& atv, uint32_t /*sz*/)
 {
        atv.clear_playlist ();
 }
@@ -3503,12 +4057,26 @@ Editor::on_key_press_event (GdkEventKey* ev)
        return key_press_focus_accelerator_handler (*this, ev);
 }
 
+bool
+Editor::on_key_release_event (GdkEventKey* ev)
+{
+       return Gtk::Window::on_key_release_event (ev);
+       // return key_press_focus_accelerator_handler (*this, ev);
+}
+
 void
-Editor::reset_x_origin (nframes_t frame)
+Editor::reset_x_origin (nframes64_t frame)
 {
+       //cerr << "resetting x origin" << endl;
        queue_visual_change (frame);
 }
 
+void
+Editor::reset_y_origin (double y)
+{
+       queue_visual_change_y (y);
+}
+
 void
 Editor::reset_zoom (double fpu)
 {
@@ -3516,17 +4084,106 @@ Editor::reset_zoom (double fpu)
 }
 
 void
-Editor::reposition_and_zoom (nframes_t frame, double fpu)
+Editor::reposition_and_zoom (nframes64_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);
+
+       if (!no_save_visual) {
+               undo_visual_stack.push_back (current_visual_state(false));
+       }
+}
+
+Editor::VisualState*
+Editor::current_visual_state (bool with_tracks)
+{
+       VisualState* vs = new VisualState;
+       vs->y_position = vertical_adjustment.get_value();
+       vs->frames_per_unit = frames_per_unit;
+       vs->leftmost_frame = leftmost_frame;
+       vs->zoom_focus = zoom_focus;
+
+       if (with_tracks) {
+               for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
+                       vs->track_states.push_back (TAVState ((*i), &(*i)->get_state()));
+               }
+       }
+
+       return vs;
 }
 
 void
-Editor::set_frames_per_unit (double fpu)
+Editor::undo_visual_state ()
+{
+       if (undo_visual_stack.empty()) {
+               return;
+       }
+
+       VisualState* vs = undo_visual_stack.back();
+       undo_visual_stack.pop_back();
+       use_visual_state (*vs);
+       redo_visual_stack.push_back (vs);
+}
+
+void
+Editor::redo_visual_state ()
+{
+       if (redo_visual_stack.empty()) {
+               return;
+       }
+
+       VisualState* vs = redo_visual_stack.back();
+       redo_visual_stack.pop_back();
+       use_visual_state (*vs);
+       undo_visual_stack.push_back (vs);
+}
+
+void
+Editor::swap_visual_state ()
+{
+       if (undo_visual_stack.empty()) {
+               redo_visual_state ();
+       } else {
+               undo_visual_state ();
+       }
+}
+
+void
+Editor::use_visual_state (VisualState& vs)
 {
-       nframes_t frames;
+       no_save_visual = true;
+
+       _routes->suspend_redisplay ();
+
+       vertical_adjustment.set_value (vs.y_position);
+
+       set_zoom_focus (vs.zoom_focus);
+       reposition_and_zoom (vs.leftmost_frame, vs.frames_per_unit);
+
+       for (list<TAVState>::iterator i = vs.track_states.begin(); i != vs.track_states.end(); ++i) {
+               TrackViewList::iterator t;
 
+               /* check if the track still exists - it could have been deleted */
+
+               if ((t = find (track_views.begin(), track_views.end(), i->first)) != track_views.end()) {
+                       (*t)->set_state (*(i->second), Stateful::loading_state_version);
+               }
+       }
+
+
+       if (!vs.track_states.empty()) {
+               _routes->update_visibility ();
+       }
+
+       _routes->resume_redisplay ();
+
+       no_save_visual = false;
+}
+
+void
+Editor::set_frames_per_unit (double fpu)
+{
        /* this is the core function that controls the zoom level of the canvas. it is called
           whenever one or more calls are made to reset_zoom(). it executes in an idle handler.
        */
@@ -3539,10 +4196,7 @@ Editor::set_frames_per_unit (double fpu)
                fpu = 2.0;
        }
 
-       // convert fpu to frame count
 
-       frames = (nframes_t) floor (fpu * canvas_width);
-       
        /* don't allow zooms that fit more than the maximum number
           of frames into an 800 pixel wide space.
        */
@@ -3551,58 +4205,94 @@ Editor::set_frames_per_unit (double fpu)
                return;
        }
 
-       if (fpu == frames_per_unit) {
-               return;
-       }
+       if (tempo_lines)
+               tempo_lines->tempo_map_changed();
 
        frames_per_unit = fpu;
+       post_zoom ();
+}
+
+void
+Editor::post_zoom ()
+{
+       nframes64_t cef = 0;
+
+       // convert fpu to frame count
 
-       if (frames != zoom_range_clock.current_duration()) {
+       nframes64_t frames = (nframes64_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 ();
-       reset_scrolling_region ();
-       
-       if (edit_cursor) edit_cursor->set_position (edit_cursor->current_frame);
-       if (playhead_cursor) playhead_cursor->set_position (playhead_cursor->current_frame);
+       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) {
+               playhead_cursor->set_position (playhead_cursor->current_frame);
+       }
+
+       refresh_location_display();
+       _summary->set_overlays_dirty ();
 
        instant_save ();
 }
 
 void
-Editor::queue_visual_change (nframes_t where)
+Editor::queue_visual_change (nframes64_t where)
 {
-       pending_visual_change.pending = VisualChange::Type (pending_visual_change.pending | VisualChange::TimeOrigin);
-       pending_visual_change.time_origin = where;
+       pending_visual_change.add (VisualChange::TimeOrigin);
 
-       if (pending_visual_change.idle_handler_id < 0) {
-               pending_visual_change.idle_handler_id = g_idle_add (_idle_visual_changer, this);
+       /* if we're moving beyond the end, make sure the upper limit of the horizontal adjustment
+          can reach.
+       */
+
+       if (_session && (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 ();
 }
 
 void
 Editor::queue_visual_change (double fpu)
 {
-       pending_visual_change.pending = VisualChange::Type (pending_visual_change.pending | VisualChange::ZoomLevel);
+       pending_visual_change.add (VisualChange::ZoomLevel);
        pending_visual_change.frames_per_unit = fpu;
 
+       ensure_visual_change_idle_handler ();
+}
+
+void
+Editor::queue_visual_change_y (double y)
+{
+       pending_visual_change.add (VisualChange::YOrigin);
+       pending_visual_change.y_origin = y;
+
+       ensure_visual_change_idle_handler ();
+}
+
+void
+Editor::ensure_visual_change_idle_handler ()
+{
        if (pending_visual_change.idle_handler_id < 0) {
-               pending_visual_change.idle_handler_id = g_idle_add_full (G_PRIORITY_HIGH_IDLE, _idle_visual_changer, this, 0);
+               pending_visual_change.idle_handler_id = g_idle_add (_idle_visual_changer, this);
        }
 }
 
@@ -3616,47 +4306,719 @@ int
 Editor::idle_visual_changer ()
 {
        VisualChange::Type p = pending_visual_change.pending;
-
        pending_visual_change.pending = (VisualChange::Type) 0;
-       pending_visual_change.idle_handler_id = -1;
-       
+
+       double last_time_origin = horizontal_adjustment.get_value();
+
        if (p & VisualChange::ZoomLevel) {
                set_frames_per_unit (pending_visual_change.frames_per_unit);
-       }
 
+               compute_fixed_ruler_scale ();
+               compute_current_bbt_points(pending_visual_change.time_origin, pending_visual_change.time_origin + current_page_frames());
+               compute_bbt_ruler_scale (pending_visual_change.time_origin, pending_visual_change.time_origin + current_page_frames());
+               update_tempo_based_rulers ();
+       }
        if (p & VisualChange::TimeOrigin) {
-               if (pending_visual_change.time_origin != leftmost_frame) {
-                       horizontal_adjustment.set_value (pending_visual_change.time_origin/frames_per_unit);
-                       /* the signal handler will do the rest */
-               } else {
-                       update_fixed_rulers();
-                       redisplay_tempo (true);
-               }
+               horizontal_adjustment.set_value (pending_visual_change.time_origin / frames_per_unit);
+       }
+       if (p & VisualChange::YOrigin) {
+               vertical_adjustment.set_value (pending_visual_change.y_origin);
        }
 
-       return 0; /* this is always a one-shot call */
+       if (last_time_origin == horizontal_adjustment.get_value()) {
+               /* changed signal not emitted */
+               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 */
 }
 
 struct EditorOrderTimeAxisSorter {
     bool operator() (const TimeAxisView* a, const TimeAxisView* b) const {
-           return a->order < b->order;
+           return a->order () < b->order ();
     }
 };
-       
+
 void
-Editor::sort_track_selection ()
+Editor::sort_track_selection (TrackViewList* sel)
 {
        EditorOrderTimeAxisSorter cmp;
-       selection->tracks.sort (cmp);
+
+       if (sel) {
+               sel->sort (cmp);
+       } else {
+               selection->tracks.sort (cmp);
+       }
+}
+
+nframes64_t
+Editor::get_preferred_edit_position (bool ignore_playhead)
+{
+       bool ignored;
+       nframes64_t where = 0;
+       EditPoint ep = _edit_point;
+
+       if (entered_marker) {
+               return entered_marker->position();
+       }
+
+       if (ignore_playhead && ep == EditAtPlayhead) {
+               ep = EditAtSelectedMarker;
+       }
+
+       switch (ep) {
+       case EditAtPlayhead:
+               where = _session->audible_frame();
+               break;
+
+       case EditAtSelectedMarker:
+               if (!selection->markers.empty()) {
+                       bool is_start;
+                       Location* loc = find_location_from_marker (selection->markers.front(), is_start);
+                       if (loc) {
+                               if (is_start) {
+                                       where =  loc->start();
+                               } else {
+                                       where = loc->end();
+                               }
+                               break;
+                       }
+               }
+               /* fallthru */
+
+       default:
+       case EditAtMouse:
+               if (!mouse_frame (where, ignored)) {
+                       /* XXX not right but what can we do ? */
+                       return 0;
+               }
+               snap_to (where);
+               break;
+       }
+
+       return where;
+}
+
+void
+Editor::set_loop_range (nframes64_t start, nframes64_t end, string cmd)
+{
+       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));
+       } 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));
+       }
+
+       commit_reversible_command ();
+}
+
+void
+Editor::set_punch_range (nframes64_t start, nframes64_t end, string cmd)
+{
+       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));
+       }
+       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));
+       }
+
+       commit_reversible_command ();
+}
+
+/** Find regions which exist at a given time, and optionally on a given list of tracks.
+ *  @param rs List to which found regions are added.
+ *  @param where Time to look at.
+ *  @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 TrackViewList& ts) const
+{
+       const TrackViewList* tracks;
+
+       if (ts.empty()) {
+               tracks = &track_views;
+       } else {
+               tracks = &ts;
+       }
+
+       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<Playlist> pl;
+
+                       if ((ds = rtv->get_diskstream()) && ((pl = ds->playlist()))) {
+
+                               Playlist::RegionList* regions = pl->regions_at (
+                                               (nframes64_t) floor ( (double)where * ds->speed()));
+
+                               for (Playlist::RegionList::iterator i = regions->begin(); i != regions->end(); ++i) {
+                                       RegionView* rv = rtv->view()->find_view (*i);
+                                       if (rv) {
+                                               rs.add (rv);
+                                       }
+                               }
+
+                               delete regions;
+                       }
+               }
+       }
+}
+
+void
+Editor::get_regions_after (RegionSelection& rs, nframes64_t where, const TrackViewList& ts) const
+{
+       const TrackViewList* tracks;
+
+       if (ts.empty()) {
+               tracks = &track_views;
+       } else {
+               tracks = &ts;
+       }
+
+       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<Playlist> pl;
+
+                       if ((ds = rtv->get_diskstream()) && ((pl = ds->playlist()))) {
+
+                               Playlist::RegionList* regions = pl->regions_touched (
+                                               (nframes64_t) floor ( (double)where * ds->speed()), max_frames);
+
+                               for (Playlist::RegionList::iterator i = regions->begin(); i != regions->end(); ++i) {
+
+                                       RegionView* rv = rtv->view()->find_view (*i);
+
+                                       if (rv) {
+                                               rs.push_back (rv);
+                                       }
+                               }
+
+                               delete regions;
+                       }
+               }
+       }
 }
 
-nframes_t
-Editor::edit_cursor_position(bool sync)
+/** 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)
+ *  @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)
 {
-       if (sync && edit_cursor->current_frame != edit_cursor_clock.current_time()) {
-               edit_cursor_clock.set(edit_cursor->current_frame, true);
+       /* Start with selected regions */
+       rs = selection->regions;
+
+       /* Add the entered_regionview, if requested */
+       if (allow_entered && entered_regionview) {
+               rs.add (entered_regionview);
        }
 
-       return edit_cursor->current_frame;
+       if (allow_edit_position) {
+
+               TrackViewList tracks = selection->tracks;
+
+               /* tracks is currently the set of selected tracks; add any other tracks that
+                * have regions that are in the same edit-activated route group as one of
+                * our regions */
+               for (RegionSelection::iterator i = rs.begin (); i != rs.end(); ++i) {
+
+                       RouteGroup* g = (*i)->get_time_axis_view().route_group ();
+                       if (g && g->active_property (RouteGroup::Edit)) {
+                               tracks.add (axis_views_from_routes (g->route_list()));
+                       }
+                       
+               }
+
+               if (!tracks.empty()) {
+                       /* now find regions that are at the edit position on those tracks */
+                       nframes64_t const where = get_preferred_edit_position ();
+                       get_regions_at (rs, where, tracks);
+               }
+       }
 }
 
+void
+Editor::get_regions_corresponding_to (boost::shared_ptr<Region> region, vector<RegionView*>& regions)
+{
+       for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
+
+               RouteTimeAxisView* tatv;
+
+               if ((tatv = dynamic_cast<RouteTimeAxisView*> (*i)) != 0) {
+
+                       boost::shared_ptr<Playlist> pl;
+                       vector<boost::shared_ptr<Region> > results;
+                       RegionView* marv;
+                       boost::shared_ptr<Diskstream> ds;
+
+                       if ((ds = tatv->get_diskstream()) == 0) {
+                               /* bus */
+                               continue;
+                       }
+
+                       if ((pl = (ds->playlist())) != 0) {
+                               pl->get_region_list_equivalent_regions (region, results);
+                       }
+
+                       for (vector<boost::shared_ptr<Region> >::iterator ir = results.begin(); ir != results.end(); ++ir) {
+                               if ((marv = tatv->view()->find_view (*ir)) != 0) {
+                                       regions.push_back (marv);
+                               }
+                       }
+
+               }
+       }
+}
+
+void
+Editor::show_rhythm_ferret ()
+{
+       if (rhythm_ferret == 0) {
+               rhythm_ferret = new RhythmFerret(*this);
+       }
+
+       rhythm_ferret->set_session (_session);
+       rhythm_ferret->show ();
+       rhythm_ferret->present ();
+}
+
+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 ()
+{
+       MessageDialog* dialog = 0;
+
+       if (track_views.size() > 1) {
+               dialog = new MessageDialog (*this,
+                                           _("Please wait while Ardour loads visual data"),
+                                           true,
+                                           Gtk::MESSAGE_INFO,
+                                           Gtk::BUTTONS_NONE);
+               dialog->present ();
+               ARDOUR_UI::instance()->flush_pending ();
+       }
+
+       for (TrackViewList::iterator t = track_views.begin(); t != track_views.end(); ++t) {
+               (*t)->first_idle();
+       }
+
+       // first idle adds route children (automation tracks), so we need to redisplay here
+       _routes->redisplay ();
+
+       delete dialog;
+
+       _have_idled = true;
+}
+
+static gboolean
+_idle_resizer (gpointer arg)
+{
+       return ((Editor*)arg)->idle_resize ();
+}
+
+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);
+               _pending_resize_amount = 0;
+       }
+
+       /* make a note of the smallest resulting height, so that we can clamp the
+          lower limit at TimeAxisView::hSmall */
+
+       int32_t min_resulting = INT32_MAX;
+
+       _pending_resize_amount += h;
+       _pending_resize_view = view;
+
+       min_resulting = min (min_resulting, int32_t (_pending_resize_view->current_height()) + _pending_resize_amount);
+
+       if (selection->tracks.contains (_pending_resize_view)) {
+               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);
+               }
+       }
+
+       if (min_resulting < 0) {
+               min_resulting = 0;
+       }
+
+       /* clamp */
+       if (uint32_t (min_resulting) < TimeAxisView::hSmall) {
+               _pending_resize_amount += TimeAxisView::hSmall - min_resulting;
+       }
+}
+
+/** Handle pending resizing of tracks */
+bool
+Editor::idle_resize ()
+{
+       _pending_resize_view->idle_resize (_pending_resize_view->current_height() + _pending_resize_amount);
+
+       if (dynamic_cast<AutomationTimeAxisView*> (_pending_resize_view) == 0 &&
+           selection->tracks.contains (_pending_resize_view)) {
+
+               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);
+                       }
+               }
+       }
+
+       flush_canvas ();
+       _group_tabs->set_dirty ();
+       resize_idle_id = -1;
+
+       return false;
+}
+
+void
+Editor::located ()
+{
+       ENSURE_GUI_THREAD (*this, &Editor::located);
+
+       _pending_locate_request = false;
+}
+
+void
+Editor::region_view_added (RegionView *)
+{
+       _summary->set_dirty ();
+}
+
+void
+Editor::streamview_height_changed ()
+{
+       _summary->set_dirty ();
+}
+
+TimeAxisView*
+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() == r) {
+                       return rtv;
+               }
+               ++j;
+       }
+
+       return 0;
+}
+
+
+TrackViewList
+Editor::axis_views_from_routes (boost::shared_ptr<RouteList> r) const
+{
+       TrackViewList t;
+
+       for (RouteList::const_iterator i = r->begin(); i != r->end(); ++i) {
+               TimeAxisView* tv = axis_view_from_route (*i);
+               if (tv) {
+                       t.push_back (tv);
+               }
+       }
+
+       return t;
+}
+
+
+void
+Editor::handle_new_route (RouteList& routes)
+{
+       ENSURE_GUI_THREAD (*this, &Editor::handle_new_route, routes)
+
+       RouteTimeAxisView *rtv;
+       list<RouteTimeAxisView*> new_views;
+
+       for (RouteList::iterator x = routes.begin(); x != routes.end(); ++x) {
+               boost::shared_ptr<Route> route = (*x);
+
+               if (route->is_hidden()) {
+                       continue;
+               }
+
+               DataType dt = route->input()->default_type();
+
+               if (dt == ARDOUR::DataType::AUDIO) {
+                       rtv = new AudioTimeAxisView (*this, _session, route, *track_canvas);
+               } else if (dt == ARDOUR::DataType::MIDI) {
+                       rtv = new MidiTimeAxisView (*this, _session, route, *track_canvas);
+               } else {
+                       throw unknown_type();
+               }
+
+               new_views.push_back (rtv);
+               track_views.push_back (rtv);
+
+               rtv->effective_gain_display ();
+
+               rtv->view()->RegionViewAdded.connect (sigc::mem_fun (*this, &Editor::region_view_added));
+               rtv->view()->HeightChanged.connect (sigc::mem_fun (*this, &Editor::streamview_height_changed));
+       }
+
+       _routes->routes_added (new_views);
+
+       if (show_editor_mixer_when_tracks_arrive) {
+               show_editor_mixer (true);
+       }
+
+       editor_list_button.set_sensitive (true);
+
+       _summary->set_dirty ();
+}
+
+void
+Editor::timeaxisview_deleted (TimeAxisView *tv)
+{
+       if (_session && _session->deletion_in_progress()) {
+               /* the situation is under control */
+               return;
+       }
+
+       ENSURE_GUI_THREAD (*this, &Editor::timeaxisview_deleted, tv);
+               
+
+       _routes->route_removed (tv);
+
+       if (tv == entered_track) {
+               entered_track = 0;
+       }
+       
+       /* remove it from the list of track views */
+
+       TrackViewList::iterator i;
+
+       if ((i = find (track_views.begin(), track_views.end(), tv)) != track_views.end()) {
+               i = track_views.erase (i);
+       }
+
+       /* update whatever the current mixer strip is displaying, if revelant */
+
+       boost::shared_ptr<Route> route;
+       RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (tv);
+
+       if (rtav) {
+               route = rtav->route ();
+       } 
+
+       if (current_mixer_strip && current_mixer_strip->route() == route) {
+
+               TimeAxisView* next_tv;
+
+               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*/)
+{
+       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);
+       }
+
+       _routes->hide_track_in_display (tv);
+}
+
+bool
+Editor::sync_track_view_list_and_routes ()
+{
+       track_views = TrackViewList (_routes->views ());
+
+       _summary->set_dirty ();
+       _group_tabs->set_dirty ();
+
+       return false; // do not call again (until needed)
+}
+
+void
+Editor::foreach_time_axis_view (sigc::slot<void,TimeAxisView&> theslot)
+{
+       for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
+               theslot (**i);
+       }
+}
+
+RouteTimeAxisView*
+Editor::get_route_view_by_id (PBD::ID& id)
+{
+       RouteTimeAxisView* v;
+
+       for(TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
+               if((v = dynamic_cast<RouteTimeAxisView*>(*i)) != 0) {
+                       if(v->route()->id() == id) {
+                               return v;
+                       }
+               }
+       }
+
+       return 0;
+}
+
+void
+Editor::fit_route_group (RouteGroup *g)
+{
+       TrackViewList ts = axis_views_from_routes (g->route_list ());
+       fit_tracks (ts);
+}
+
+void
+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 ();
+               return;
+       }
+
+       if (_session->is_auditioning()) {
+               _session->cancel_audition ();
+               if (r == last_audition_region) {
+                       return;
+               }
+       }
+
+       _session->audition_region (r);
+       last_audition_region = r;
+}
+
+
+void
+Editor::hide_a_region (boost::shared_ptr<Region> r)
+{
+       r->set_hidden (true);
+}
+
+void
+Editor::remove_a_region (boost::shared_ptr<Region> r)
+{
+       _session->remove_region_from_region_list (r);
+}
+
+void
+Editor::audition_region_from_region_list ()
+{
+       _regions->selection_mapover (sigc::mem_fun (*this, &Editor::consider_auditioning));
+}
+
+void
+Editor::hide_region_from_region_list ()
+{
+       _regions->selection_mapover (sigc::mem_fun (*this, &Editor::hide_a_region));
+}
+
+void
+Editor::start_step_editing ()
+{
+       step_edit_connection = Glib::signal_timeout().connect (sigc::mem_fun (*this, &Editor::check_step_edit), 20);
+}
+
+void
+Editor::stop_step_editing ()
+{
+       step_edit_connection.disconnect ();
+}
+
+bool
+Editor::check_step_edit ()
+{
+       for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
+               MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*> (*i);
+               if (mtv) {
+                       mtv->check_step_edit ();
+               }
+       }
+
+       return true; // do it again, till we stop
+}
+
+void
+Editor::horizontal_scroll_left ()
+{
+       double x = leftmost_position() - current_page_frames() / 5;
+       if (x < 0) {
+               x = 0;
+       }
+       
+       reset_x_origin (x);
+}
+
+void
+Editor::horizontal_scroll_right ()
+{
+       reset_x_origin (leftmost_position() + current_page_frames() / 5);
+}