Don't add auditioner and click to MIDI connection port matrices.
[ardour.git] / gtk2_ardour / editor.cc
index b129009a9cddbb1425291f4065660ece6a5f8095..c9c309c6c545a51fd682b322aa288563ea713ac3 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 <boost/none.hpp>
 
@@ -33,6 +36,7 @@
 #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>
@@ -45,6 +49,7 @@
 #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 "analysis_window.h"
 #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_snapshots.h"
 
 #include "i18n.h"
 
@@ -196,60 +210,48 @@ show_me_the_size (Requisition* r, const char* what)
        cerr << "size of " << what << " = " << r->width << " x " << r->height << endl;
 }
 
-void
-DragInfo::clear_copied_locations ()
-{
-       for (list<Location*>::iterator i = copied_locations.begin(); i != copied_locations.end(); ++i) {
-               delete *i;
-       }
-       copied_locations.clear ();
-}
-
 Editor::Editor ()
-       : 
          /* time display buttons */
-
-         minsec_label (_("Mins:Secs")),
-         bbt_label (_("Bars:Beats")),
-         smpte_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 (3, 4, true),
+       : minsec_label (_("Mins:Secs"))
+       , bbt_label (_("Bars:Beats"))
+       , smpte_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_point_clock (X_("editpoint"), false, X_("EditPointClock"), true),
-         zoom_range_clock (X_("zoomrange"), false, X_("ZoomRangeClock"), true, true),
+       , edit_point_clock (X_("editpoint"), false, X_("EditPointClock"), true)
+       , zoom_range_clock (X_("zoomrange"), false, X_("ZoomRangeClock"), true, true)
          
-         toolbar_selection_clock_table (2,3),
+       , toolbar_selection_clock_table (2,3)
+         
+       , automation_mode_button (_("mode"))
+       , global_automation_button (_("automation"))
+         
+       , midi_panic_button (_("Panic"))
          
-         automation_mode_button (_("mode")),
-         global_automation_button (_("automation")),
-
-         midi_panic_button (_("Panic")),
-         midi_tools_tearoff (0),
-
 #ifdef WITH_CMT
-         image_socket_listener(0),
+       , image_socket_listener(0)
 #endif
-
+         
          /* nudge */
-
-         nudge_clock (X_("nudge"), false, X_("NudgeClock"), true, true),
-         meters_running(false),
-         _pending_locate_request (false)
+         
+       , nudge_clock (X_("nudge"), false, X_("NudgeClock"), true, true)
+       , meters_running(false)
+       , _pending_locate_request (false)
 
 {
        constructed = false;
@@ -270,7 +272,7 @@ Editor::Editor ()
        clicked_crossfadeview = 0;
        clicked_control_point = 0;
        last_update_frame = 0;
-       drag_info.item = 0;
+       _drag = 0;
        current_mixer_strip = 0;
        current_bbt_points = 0;
        tempo_lines = 0;
@@ -285,8 +287,8 @@ Editor::Editor ()
        
        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;
@@ -298,28 +300,18 @@ Editor::Editor ()
 
        current_interthread_info = 0;
        _show_measures = true;
-       _show_waveforms = true;
        _show_waveforms_recording = true;
-       first_action_message = 0;
        show_gain_after_trim = false;
-       route_redisplay_does_not_sync_order_keys = false;
-       route_redisplay_does_not_reset_order_keys = false;
-       no_route_list_redisplay = false;
        verbose_cursor_on = true;
        route_removal = false;
-       show_automatic_regions_in_region_list = true;
        last_item_entered = 0;
        last_item_entered_n = 0;
 
-       region_list_sort_type = (Editing::RegionListSortType) 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;
@@ -333,8 +325,6 @@ Editor::Editor ()
        region_edit_menu_split_item = 0;
        temp_location = 0;
        leftmost_frame = 0;
-       ignore_mouse_mode_toggle = false;
-       ignore_midi_edit_mode_toggle = false;
        current_stepping_trackview = 0;
        entered_track = 0;
        entered_regionview = 0;
@@ -342,7 +332,6 @@ Editor::Editor ()
        clear_entered_track = false;
        _new_regionviews_show_envelope = false;
        current_timefx = 0;
-       in_edit_group_row_change = false;
        playhead_cursor = 0;
        button_release_can_deselect = true;
        _dragging_playhead = false;
@@ -352,18 +341,13 @@ Editor::Editor ()
        zoomed_to_region = false;
        rhythm_ferret = 0;
        _bundle_manager = 0;
-        for (ARDOUR::DataType::iterator i = ARDOUR::DataType::begin(); i != ARDOUR::DataType::end(); ++i) {
+       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;
-       need_resize_line = false;
-       resize_line_y = 0;
-       old_resize_line_y = -1;
-       no_region_list_redisplay = false;
        resize_idle_id = -1;
 
-       _scrubbing = false;
        scrubbing_direction = 0;
 
        sfbrowser = 0;
@@ -374,11 +358,9 @@ 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_midi_edit_mode (MidiEditPencil, true);
        _edit_point = EditAtMouse;
-       set_mouse_mode (MouseObject, true);
+       _internal_editing = false;
+       current_canvas_cursor = 0;
 
        frames_per_unit = 2048; /* too early to use reset_zoom () */
        reset_hscrollbar_stepping ();
@@ -450,6 +432,7 @@ Editor::Editor ()
        transport_mark_label.set_no_show_all();
 
        initialize_rulers ();
+       _summary = new EditorSummary (this);
        initialize_canvas ();
 
        selection->TimeChanged.connect (mem_fun(*this, &Editor::time_selection_changed));
@@ -463,7 +446,12 @@ Editor::Editor ()
        vertical_adjustment.signal_value_changed().connect (mem_fun(*this, &Editor::tie_vertical_scrolling), true);
        track_canvas->signal_map_event().connect (mem_fun (*this, &Editor::track_canvas_map_handler));
 
-       controls_layout.add (edit_controls_vbox);
+       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);
+       
        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);
@@ -494,16 +482,14 @@ Editor::Editor ()
        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);
+       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.set_name ("TimebarLabelBase");
        ruler_label_event_box.signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_label_button_release));
 
        time_button_event_box.add (time_button_vbox);
-       time_button_event_box.set_name ("TimebarLabelBase");
        time_button_event_box.set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
        time_button_event_box.signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_label_button_release));
 
@@ -515,207 +501,33 @@ Editor::Editor ()
 
        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");
 
-#ifndef THE_OLD_WAY
-
-       edit_packer.attach (ruler_label_event_box,   0, 1, 0, 1,    FILL,        SHRINK, 0, 0);
-
-       edit_packer.attach (time_button_event_box,   0, 1, 1, 2,    FILL,        SHRINK, 0, 0);
-       edit_packer.attach (time_canvas_event_box,   1, 2, 0, 1,    FILL|EXPAND, FILL, 0, 0);
-
-       edit_packer.attach (controls_layout,         0, 1, 2, 3,    FILL,        FILL|EXPAND, 0, 0);
-       edit_packer.attach (track_canvas_event_box,  1, 2, 1, 3,    FILL|EXPAND, FILL|EXPAND, 0, 0);
-
-       edit_packer.attach (zoom_box,                0, 1, 3, 4,    FILL,         FILL, 0, 0);
-       edit_packer.attach (edit_hscrollbar,         1, 2, 3, 4,    FILL|EXPAND,  FILL, 0, 0);
-
-       edit_packer.attach (edit_vscrollbar,         3, 4, 2, 3,    FILL,        FILL|EXPAND, 0, 0);
-
-#else
-       
-       edit_packer.attach (edit_vscrollbar,         0, 1, 0, 4,    FILL,        FILL|EXPAND, 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);
-
-       edit_packer.attach (controls_layout,         1, 2, 2, 3,    FILL,        FILL|EXPAND, 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);
 
-       edit_packer.attach (zoom_box,                1, 2, 3, 4,    FILL,         FILL, 0, 0);
-       edit_packer.attach (edit_hscrollbar,         2, 3, 3, 4,    FILL|EXPAND,  FILL, 0, 0);
-#endif
-
        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_SINGLE);
-       route_list_display.set_reorderable (true);
-       route_list_display.set_size_request (100,-1);
-       route_list_display.add_object_drag (route_display_columns.route.index(), "routes");
-
-       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");
-       /* Try to prevent single mouse presses from initiating edits.
-          This relies on a hack in gtktreeview.c:gtk_treeview_button_press()
-       */
-       region_list_display.set_data ("mouse-edits-require-mod1", (gpointer) 0x1);
-
-       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.append_column (_("Start"), region_list_columns.start);
-       region_list_display.append_column (_("End"), region_list_columns.end);
-       region_list_display.append_column (_("Length"), region_list_columns.length);
-       region_list_display.append_column (_("Sync"), region_list_columns.sync);
-       region_list_display.append_column (_("Fade In"), region_list_columns.fadein);
-       region_list_display.append_column (_("Fade Out"), region_list_columns.fadeout);
-       region_list_display.append_column (_("L"), region_list_columns.locked);
-       region_list_display.append_column (_("G"), region_list_columns.glued);
-       region_list_display.append_column (_("M"), region_list_columns.muted);
-       region_list_display.append_column (_("O"), region_list_columns.opaque);
-       region_list_display.append_column (_("Used"), region_list_columns.used);
-       region_list_display.append_column (_("Path"), region_list_columns.path);
-       region_list_display.set_headers_visible (true);
-       //region_list_display.set_grid_lines (TREE_VIEW_GRID_LINES_BOTH);
-       
-       CellRendererText* region_name_cell = dynamic_cast<CellRendererText*>(region_list_display.get_column_cell_renderer (0));
-       region_name_cell->property_editable() = true;
-       region_name_cell->signal_edited().connect (mem_fun (*this, &Editor::region_name_edit));
+       _route_groups = new EditorRouteGroups (this);
+       _routes = new EditorRoutes (this);
+       _regions = new EditorRegions (this);
+       _snapshots = new EditorSnapshots (this);
 
-       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_AUTOMATIC, 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_change_connection = 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));
-       
-       //ARDOUR_UI::instance()->secondary_clock.mode_changed.connect (mem_fun(*this, &Editor::redisplay_regions));
-       ARDOUR_UI::instance()->secondary_clock.mode_changed.connect (mem_fun(*this, &Editor::update_all_region_rows));
-       ARDOUR::Region::RegionPropertyChanged.connect (mem_fun(*this, &Editor::update_region_row));
-       
        named_selection_scroller.add (named_selection_display);
        named_selection_scroller.set_policy (POLICY_NEVER, POLICY_AUTOMATIC);
 
@@ -732,35 +544,20 @@ Editor::Editor ()
        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);
-
        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);
+       the_notebook.append_page (_route_groups->widget (), *nlabel);
        
        if (!Profile->get_sae()) {
                nlabel = manage (new Label (_("Chunks")));
@@ -776,13 +573,17 @@ Editor::Editor ()
 
        post_maximal_editor_width = 0;
        post_maximal_pane_position = 0;
-       edit_pane.pack1 (edit_packer, true, true);
+
+       VPaned *editor_summary_pane = manage(new VPaned());
+       editor_summary_pane->pack1(edit_packer);
+       editor_summary_pane->pack2(*_summary);
+
+       edit_pane.pack1 (*editor_summary_pane, true, true);
        edit_pane.pack2 (the_notebook, false, true);
        
        edit_pane.signal_size_allocate().connect (bind (mem_fun(*this, &Editor::pane_allocation_handler), static_cast<Paned*> (&edit_pane)));
 
        top_hbox.pack_start (toolbar_frame, false, true);
-       top_hbox.pack_start (midi_toolbar_frame, false, true);
 
        HBox *hbox = manage (new HBox);
        hbox->pack_start (edit_pane, true, true);
@@ -808,6 +609,7 @@ Editor::Editor ()
        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();
@@ -873,7 +675,8 @@ Editor::Editor ()
        BasicUI::AccessAction.connect (mem_fun (*this, &Editor::access_action));
 
        Config->ParameterChanged.connect (mem_fun (*this, &Editor::parameter_changed));
-       Route::SyncOrderKeys.connect (mem_fun (*this, &Editor::sync_order_keys));
+
+       _last_normalization_value = 0;
 
        constructed = true;
        instant_save ();
@@ -893,8 +696,10 @@ Editor::~Editor()
        }
 #endif
 
+       delete _routes;
+       delete _route_groups;
        delete track_canvas;
-       track_canvas = 0;
+       delete _drag;
 }
 
 void
@@ -911,8 +716,10 @@ Editor::catch_vanishing_regionview (RegionView *rv)
           audioregionview by itself.
        */
 
-       if (rv->get_canvas_group() == drag_info.item) {
-               end_grab (drag_info.item, 0);
+       if (_drag && rv->get_canvas_group() == _drag->item() && !_drag->ending()) {
+               _drag->end_grab (0);
+               delete _drag;
+               _drag = 0;
        }
 
        if (clicked_regionview == rv) {
@@ -958,8 +765,13 @@ Editor::show_window ()
        if (! is_visible ()) {
                show_all ();
 
-                /* re-hide editor list if necessary */
-                editor_list_button_toggled ();
+               /* 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
@@ -1018,14 +830,14 @@ Editor::zoom_adjustment_changed ()
                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 ((nframes64_t) floor (fpu * canvas_width));
-       } else if (fpu > session->current_end_frame() / canvas_width) {
-               fpu = session->current_end_frame() / canvas_width;
-               zoom_range_clock.set ((nframes64_t) floor (fpu * canvas_width));
+               zoom_range_clock.set ((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);
@@ -1094,7 +906,7 @@ Editor::control_scroll (float fraction)
 }
 
 bool
-Editor::deferred_control_scroll (nframes64_t target)
+Editor::deferred_control_scroll (nframes64_t /*target*/)
 {
        session->request_locate (*_control_scroll_target, session->transport_rolling());
        // reset for next stream
@@ -1159,7 +971,7 @@ Editor::map_position_change (nframes64_t frame)
 void
 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.
         */
@@ -1196,8 +1008,8 @@ Editor::handle_new_duration ()
        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);
+       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
 }
@@ -1241,6 +1053,8 @@ Editor::connect_to_session (Session *t)
 {
        session = t;
 
+       compute_fixed_ruler_scale ();
+
        /* there are never any selected regions at startup */
 
        sensitize_the_right_region_actions (false);
@@ -1252,10 +1066,6 @@ Editor::connect_to_session (Session *t)
 
        session->request_locate (playhead_cursor->current_frame);
 
-       if (first_action_message) {
-               first_action_message->hide();
-       }
-
        update_title ();
 
        session->GoingAway.connect (mem_fun(*this, &Editor::session_going_away));
@@ -1269,25 +1079,19 @@ Editor::connect_to_session (Session *t)
        session_connections.push_back (session->TransportStateChange.connect (mem_fun(*this, &Editor::map_transport_state)));
        session_connections.push_back (session->PositionChanged.connect (mem_fun(*this, &Editor::map_position_change)));
        session_connections.push_back (session->RouteAdded.connect (mem_fun(*this, &Editor::handle_new_route)));
-       session_connections.push_back (session->RegionsAdded.connect (mem_fun(*this, &Editor::handle_new_regions)));
-       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)));
 
        session_connections.push_back (session->Located.connect (mem_fun (*this, &Editor::located)));
-
-       edit_groups_changed ();
+       session_connections.push_back (session->config.ParameterChanged.connect (mem_fun (*this, &Editor::parameter_changed)));
 
        edit_point_clock.set_mode(AudioClock::BBT);
        edit_point_clock.set_session (session);
@@ -1343,6 +1147,7 @@ Editor::connect_to_session (Session *t)
        }
 
        Config->map_parameters (mem_fun (*this, &Editor::parameter_changed));
+       session->config.map_parameters (mem_fun (*this, &Editor::parameter_changed));
        
        session->StateSaved.connect (mem_fun(*this, &Editor::session_state_saved));
        
@@ -1359,46 +1164,18 @@ Editor::connect_to_session (Session *t)
 
        handle_new_duration ();
 
-       redisplay_regions ();
        redisplay_named_selections ();
-       redisplay_snapshots ();
 
        restore_ruler_visibility ();
        //tempo_map_changed (Change (0));
        session->tempo_map().apply_with_metrics (*this, &Editor::draw_metric_marks);
 
-       initial_route_list_display ();
-
        for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
                (static_cast<TimeAxisView*>(*i))->set_samples_per_unit (frames_per_unit);
        }
 
        start_scrolling ();
 
-       /* don't show master bus in a new session */
-
-       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 ();
-       }
-       
        switch (snap_type) {
        case SnapToRegionStart:
        case SnapToRegionEnd:
@@ -1414,6 +1191,13 @@ Editor::connect_to_session (Session *t)
        /* register for undo history */
        session->register_with_memento_command_factory(_id, this);
 
+       _summary->connect_to_session (session);
+       _group_tabs->connect_to_session (session);
+       _route_groups->connect_to_session (session);
+       _regions->connect_to_session (session);
+       _snapshots->connect_to_session (session);
+       _routes->connect_to_session (session);
+       
        start_updating ();
 }
 
@@ -1679,7 +1463,7 @@ Editor::popup_track_context_menu (int button, int32_t time, ItemType item_type,
 }
 
 Menu*
-Editor::build_track_context_menu (nframes64_t ignored)
+Editor::build_track_context_menu (nframes64_t)
 {
        using namespace Menu_Helpers;
 
@@ -1691,7 +1475,7 @@ Editor::build_track_context_menu (nframes64_t ignored)
 }
 
 Menu*
-Editor::build_track_bus_context_menu (nframes64_t ignored)
+Editor::build_track_bus_context_menu (nframes64_t)
 {
        using namespace Menu_Helpers;
 
@@ -1823,7 +1607,7 @@ Editor::analyze_range_selection()
 }
 
 Menu*
-Editor::build_track_selection_context_menu (nframes64_t ignored)
+Editor::build_track_selection_context_menu (nframes64_t)
 {
        using namespace Menu_Helpers;
        MenuList& edit_items  = track_selection_context_menu.items();
@@ -1840,7 +1624,7 @@ Editor::build_track_selection_context_menu (nframes64_t ignored)
  * @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);
@@ -1896,20 +1680,6 @@ 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);
-       }
-}
-
 void
 Editor::add_region_context_items (StreamView* sv, boost::shared_ptr<Region> region, Menu_Helpers::MenuList& edit_items)
 {
@@ -2052,6 +1822,7 @@ Editor::add_region_context_items (StreamView* sv, boost::shared_ptr<Region> regi
                items.push_back (SeparatorElem());
        }
 
+       items.push_back (MenuElem (_("Strip silence..."), mem_fun (*this, &Editor::strip_region_silence)));
        items.push_back (MenuElem (_("Reverse"), mem_fun(*this, &Editor::reverse_region)));
        items.push_back (SeparatorElem());
 
@@ -2144,40 +1915,44 @@ Editor::add_selection_context_items (Menu_Helpers::MenuList& edit_items)
 {
        using namespace Menu_Helpers;
 
-       edit_items.push_back (MenuElem (_("Play range"), mem_fun(*this, &Editor::play_selection)));
-       edit_items.push_back (MenuElem (_("Loop range"), bind (mem_fun(*this, &Editor::set_loop_from_selection), true)));
+       edit_items.push_back (MenuElem (_("Play Range"), mem_fun(*this, &Editor::play_selection)));
+       edit_items.push_back (MenuElem (_("Loop Range"), bind (mem_fun(*this, &Editor::set_loop_from_selection), true)));
 
        edit_items.push_back (SeparatorElem());
        edit_items.push_back (MenuElem (_("Spectral Analysis"), mem_fun(*this, &Editor::analyze_range_selection)));
-       
-       edit_items.push_back (SeparatorElem());
-       edit_items.push_back (MenuElem (_("Extend Range to End of Region"), bind (mem_fun(*this, &Editor::extend_selection_to_end_of_region), false)));
-       edit_items.push_back (MenuElem (_("Extend Range to Start of Region"), bind (mem_fun(*this, &Editor::extend_selection_to_start_of_region), false)));
+
+       if (!selection->regions.empty()) {
+               edit_items.push_back (SeparatorElem());
+               edit_items.push_back (MenuElem (_("Extend Range to End of Region"), bind (mem_fun(*this, &Editor::extend_selection_to_end_of_region), false)));
+               edit_items.push_back (MenuElem (_("Extend Range to Start of Region"), bind (mem_fun(*this, &Editor::extend_selection_to_start_of_region), false)));
+       }
 
        edit_items.push_back (SeparatorElem());
-       edit_items.push_back (MenuElem (_("Convert to region in-place"), mem_fun(*this, &Editor::separate_region_from_selection)));
-       edit_items.push_back (MenuElem (_("Convert to region in region list"), mem_fun(*this, &Editor::new_region_from_selection)));
+       edit_items.push_back (MenuElem (_("Silence Range"), mem_fun(*this, &Editor::separate_region_from_selection)));
+       edit_items.push_back (MenuElem (_("Convert to Region in Region List"), mem_fun(*this, &Editor::new_region_from_selection)));
        
        edit_items.push_back (SeparatorElem());
-       edit_items.push_back (MenuElem (_("Select all in range"), mem_fun(*this, &Editor::select_all_selectables_using_time_selection)));
+       edit_items.push_back (MenuElem (_("Select All in Range"), mem_fun(*this, &Editor::select_all_selectables_using_time_selection)));
 
        edit_items.push_back (SeparatorElem());
-       edit_items.push_back (MenuElem (_("Set loop from selection"), bind (mem_fun(*this, &Editor::set_loop_from_selection), false)));
-       edit_items.push_back (MenuElem (_("Set punch from selection"), mem_fun(*this, &Editor::set_punch_from_selection)));
+       edit_items.push_back (MenuElem (_("Set Loop from Range"), bind (mem_fun(*this, &Editor::set_loop_from_selection), false)));
+       edit_items.push_back (MenuElem (_("Set Punch from Range"), mem_fun(*this, &Editor::set_punch_from_selection)));
        
        edit_items.push_back (SeparatorElem());
        edit_items.push_back (MenuElem (_("Add Range Markers"), mem_fun (*this, &Editor::add_location_from_selection)));
+       
        edit_items.push_back (SeparatorElem());
-       edit_items.push_back (MenuElem (_("Crop region to range"), mem_fun(*this, &Editor::crop_region_to_selection)));
-       edit_items.push_back (MenuElem (_("Fill range with region"), mem_fun(*this, &Editor::region_fill_selection)));
-       edit_items.push_back (MenuElem (_("Duplicate range"), bind (mem_fun(*this, &Editor::duplicate_dialog), false)));
-       edit_items.push_back (MenuElem (_("Create chunk from range"), mem_fun(*this, &Editor::create_named_selection)));
+       edit_items.push_back (MenuElem (_("Crop Region to Range"), mem_fun(*this, &Editor::crop_region_to_selection)));
+       edit_items.push_back (MenuElem (_("Fill Range with Region"), mem_fun(*this, &Editor::region_fill_selection)));
+       edit_items.push_back (MenuElem (_("Duplicate Range"), bind (mem_fun(*this, &Editor::duplicate_dialog), false)));
+       edit_items.push_back (MenuElem (_("Create Chunk from Range"), mem_fun(*this, &Editor::create_named_selection)));
+       
        edit_items.push_back (SeparatorElem());
-       edit_items.push_back (MenuElem (_("Consolidate range"), bind (mem_fun(*this, &Editor::bounce_range_selection), true, false)));
-       edit_items.push_back (MenuElem (_("Consolidate range with processing"), bind (mem_fun(*this, &Editor::bounce_range_selection), true, true)));
-       edit_items.push_back (MenuElem (_("Bounce range to region list"), bind (mem_fun(*this, &Editor::bounce_range_selection), false, false)));
-       edit_items.push_back (MenuElem (_("Bounce range to region list with processing"), bind (mem_fun(*this, &Editor::bounce_range_selection), false, true)));
-       edit_items.push_back (MenuElem (_("Export range"), mem_fun(*this, &Editor::export_range)));
+       edit_items.push_back (MenuElem (_("Consolidate Range"), bind (mem_fun(*this, &Editor::bounce_range_selection), true, false)));
+       edit_items.push_back (MenuElem (_("Consolidate Range With Processing"), bind (mem_fun(*this, &Editor::bounce_range_selection), true, true)));
+       edit_items.push_back (MenuElem (_("Bounce Range to Region List"), bind (mem_fun(*this, &Editor::bounce_range_selection), false, false)));
+       edit_items.push_back (MenuElem (_("Bounce Range to Region List With Processing"), bind (mem_fun(*this, &Editor::bounce_range_selection), false, true)));
+       edit_items.push_back (MenuElem (_("Export Range"), mem_fun(*this, &Editor::export_range)));
 }
 
        
@@ -2550,10 +2325,6 @@ Editor::set_state (const XMLNode& node)
                set_snap_mode ((SnapMode) atoi (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 ("mouse-mode"))) {
                MouseMode m = str2mousemode(prop->value());
                mouse_mode = MouseMode ((int) m + 1); /* lie, force mode switch */
@@ -2563,16 +2334,8 @@ Editor::set_state (const XMLNode& node)
                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_("toggle-waveform-visible"));
-               if (act) {
-                       RefPtr<ToggleAction> tact = RefPtr<ToggleAction>::cast_dynamic(act);
-                       /* do it twice to force the change */
-                       tact->set_active (!yn);
-                       tact->set_active (yn);
-               }
+       if ((prop = node.property ("edit-point"))) {
+               set_edit_point_preference ((EditPoint) string_2_enum (prop->value(), _edit_point), true);
        }
 
        if ((prop = node.property ("show-waveforms-recording"))) {
@@ -2612,8 +2375,7 @@ 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"))) {
@@ -2710,12 +2472,11 @@ Editor::get_state ()
        snprintf (buf, sizeof (buf), "%" PRIi64, playhead_cursor->current_frame);
        node->add_property ("playhead", 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));
        
        Glib::RefPtr<Action> act = ActionManager::get_action (X_("Editor"), X_("show-editor-mixer"));
@@ -2786,7 +2547,7 @@ Editor::snap_to_internal (nframes64_t& start, int32_t direction, bool for_mark)
                break;
 
        case SnapToSMPTEFrame:
-               if (((direction == 0) && (fmod((double)start, (double)session->frames_per_smpte_frame()) > (session->frames_per_smpte_frame() / 2))) || (direction > 0)) {
+               if (((direction == 0) && (fmod((double)start, (double)session->frames_per_smpte_frame()) > (session->frames_per_smpte_frame() / 2))) || (direction > 0)) {
                        start = (nframes64_t) (ceil ((double) start / session->frames_per_smpte_frame()) * session->frames_per_smpte_frame());
                } else {
                        start = (nframes64_t) (floor ((double) start / session->frames_per_smpte_frame()) *  session->frames_per_smpte_frame());
@@ -3019,36 +2780,13 @@ Editor::setup_toolbar ()
 
        /* 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);
-
-       if (!Profile->get_sae()) {
-               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_select_button.set_relief(Gtk::RELIEF_NONE);
+       mouse_gain_button.set_relief(Gtk::RELIEF_NONE);
        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);
 
        HBox* mode_box = manage(new HBox);
        mode_box->set_border_width (2);
@@ -3064,7 +2802,7 @@ Editor::setup_toolbar ()
        }
        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.pack_start(internal_edit_button, true, true);
        mouse_mode_button_box.set_homogeneous(true);
 
        vector<string> edit_mode_strings;
@@ -3097,21 +2835,21 @@ Editor::setup_toolbar ()
        mouse_mode_tearoff->Visible.connect (bind (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);
+
        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");
 
        mouse_move_button.unset_flags (CAN_FOCUS);
        mouse_select_button.unset_flags (CAN_FOCUS);
@@ -3119,20 +2857,7 @@ 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);
 
        /* Zoom */
        
@@ -3162,11 +2887,15 @@ Editor::setup_toolbar ()
        zoom_focus_selector.signal_changed().connect (mem_fun(*this, &Editor::zoom_focus_selection_done));
        ARDOUR_UI::instance()->tooltips().set_tip (zoom_focus_selector, _("Zoom focus"));
 
-       zoom_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);
 
+       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);
+
        snap_box.set_spacing (1);
        snap_box.set_border_width (2);
 
@@ -3230,11 +2959,10 @@ 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 ();
        
@@ -3257,12 +2985,7 @@ Editor::midi_panic_button_pressed ()
 void
 Editor::setup_midi_toolbar ()
 {
-       string pixmap_path;
-
-       /* Mode Buttons (tool selection) */
-
-       vector<ToggleButton *> midi_tool_buttons;
-
+#if 0
        midi_tool_pencil_button.add (*(manage (new Image (::get_icon("midi_tool_pencil")))));
        midi_tool_pencil_button.set_relief(Gtk::RELIEF_NONE);
        midi_tool_buttons.push_back (&midi_tool_pencil_button);
@@ -3276,42 +2999,11 @@ Editor::setup_midi_toolbar ()
        midi_tool_erase_button.set_relief(Gtk::RELIEF_NONE);
        midi_tool_buttons.push_back (&midi_tool_erase_button);
 
-       midi_tool_pencil_button.set_active(true);
-       
-       midi_tool_button_set = new GroupedButtons (midi_tool_buttons);
-
-       midi_tool_button_box.set_border_width (2);
-       midi_tool_button_box.set_spacing(1);
-       midi_tool_button_box.pack_start(midi_tool_pencil_button, true, true);
-       midi_tool_button_box.pack_start(midi_tool_select_button, true, true);
-       midi_tool_button_box.pack_start(midi_tool_resize_button, true, true);
-       midi_tool_button_box.pack_start(midi_tool_erase_button , true, true);
-       midi_tool_button_box.set_homogeneous(true);
-
-       midi_tool_pencil_button.set_name ("MouseModeButton");
-       midi_tool_select_button.set_name ("MouseModeButton");
-       midi_tool_resize_button.set_name ("MouseModeButton");
-       midi_tool_erase_button .set_name ("MouseModeButton");
-
        ARDOUR_UI::instance()->tooltips().set_tip (midi_tool_pencil_button, _("Add/Move/Stretch Notes"));
        ARDOUR_UI::instance()->tooltips().set_tip (midi_tool_select_button, _("Select/Move Notes"));
        ARDOUR_UI::instance()->tooltips().set_tip (midi_tool_resize_button, _("Resize Notes"));
        ARDOUR_UI::instance()->tooltips().set_tip (midi_tool_erase_button,  _("Erase Notes"));
-
-       midi_tool_pencil_button.unset_flags (CAN_FOCUS);
-       midi_tool_select_button.unset_flags (CAN_FOCUS);
-       midi_tool_resize_button.unset_flags (CAN_FOCUS);
-       midi_tool_erase_button.unset_flags (CAN_FOCUS);
-       
-       midi_tool_pencil_button.signal_toggled().connect (bind (mem_fun(*this,
-                               &Editor::midi_edit_mode_toggled), Editing::MidiEditPencil));
-       midi_tool_select_button.signal_toggled().connect (bind (mem_fun(*this,
-                               &Editor::midi_edit_mode_toggled), Editing::MidiEditSelect));
-       midi_tool_resize_button.signal_toggled().connect (bind (mem_fun(*this,
-                               &Editor::midi_edit_mode_toggled), Editing::MidiEditResize));
-       midi_tool_erase_button.signal_toggled().connect (bind (mem_fun(*this,
-                               &Editor::midi_edit_mode_toggled), Editing::MidiEditErase));
-
+#endif
        
        /* Midi sound notes */
        midi_sound_notes.add (*(manage (new Image (::get_icon("midi_sound_notes")))));
@@ -3321,57 +3013,22 @@ Editor::setup_midi_toolbar ()
        
        /* Panic */
        
-       HBox* panic_box = manage (new HBox);
        midi_panic_button.set_name("MidiPanicButton");
-       midi_panic_button.signal_pressed().connect (
-                       mem_fun(this, &Editor::midi_panic_button_pressed));
-       panic_box->pack_start (midi_sound_notes , true, true);
-       panic_box->pack_start (midi_panic_button, true, true);
-       
-       /* Pack everything in... */
-
-       midi_tools_tearoff = manage (new TearOff (midi_tool_button_box));
-       midi_tools_tearoff->set_name ("MouseModeBase");
-
-       /*
-       midi_tools_tearoff->Detach.connect (bind (mem_fun(*this, &Editor::detach_tearoff), static_cast<Box*>(&midi_toolbar_hbox), 
-                                            &midi_tools_tearoff->tearoff_window()));
-       midi_tools_tearoff->Attach.connect (bind (mem_fun(*this, &Editor::reattach_tearoff), static_cast<Box*> (&midi_toolbar_hbox), 
-                                            &midi_tools_tearoff->tearoff_window(), 0));
-       midi_tools_tearoff->Hidden.connect (bind (mem_fun(*this, &Editor::detach_tearoff), static_cast<Box*>(&midi_toolbar_hbox), 
-                                            &midi_tools_tearoff->tearoff_window()));
-       midi_tools_tearoff->Visible.connect (bind (mem_fun(*this, &Editor::reattach_tearoff), static_cast<Box*> (&midi_toolbar_hbox), 
-                                             &midi_tools_tearoff->tearoff_window(), 0));
-       */
+       midi_panic_button.signal_pressed().connect (mem_fun(this, &Editor::midi_panic_button_pressed));
 
-       midi_toolbar_hbox.set_spacing (10);
-       midi_toolbar_hbox.set_border_width (1);
-
-       midi_toolbar_hbox.pack_start (*midi_tools_tearoff, false, true);
-       
-       midi_toolbar_hbox.pack_start(*panic_box, false, true, 4);
-
-       midi_tool_button_box.show_all ();
-       midi_toolbar_hbox.show_all();
-       midi_tools_tearoff->show_all();
-       
-       midi_toolbar_base.set_name ("ToolBarBase");
-       midi_toolbar_base.add (midi_toolbar_hbox);
-
-       midi_toolbar_frame.set_shadow_type (SHADOW_OUT);
-       midi_toolbar_frame.set_name ("BaseFrame");
-       midi_toolbar_frame.add (midi_toolbar_base);
+       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)                               
-
+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;
@@ -3444,7 +3101,7 @@ Editor::convert_drop_to_paths (vector<ustring>& paths,
                if ((*i).substr (0,7) == "file://") {
                        
                        ustring p = *i;
-                        PBD::url_decode (p);
+                       PBD::url_decode (p);
 
                        // scan forward past three slashes
                        
@@ -3528,7 +3185,7 @@ void
 Editor::begin_reversible_command (string name)
 {
        if (session) {
-                before = &get_state();
+               before = &get_state();
                session->begin_reversible_command (name);
        }
 }
@@ -3542,24 +3199,24 @@ Editor::commit_reversible_command ()
 }
 
 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);
        }
@@ -3681,7 +3338,7 @@ Editor::clamp_verbose_cursor_x (double x)
        if (x < 0) {
                x = 0;
        } else {
-               x = min (canvas_width - 200.0, x);
+               x = min (_canvas_width - 200.0, x);
        }
        return x;
 }
@@ -3692,7 +3349,7 @@ Editor::clamp_verbose_cursor_y (double y)
        if (y < canvas_timebars_vsize) {
                y = canvas_timebars_vsize;
        } else {
-               y = min (canvas_height - 50, y);
+               y = min (_canvas_height - 50, y);
        }
        return y;
 }
@@ -3926,10 +3583,9 @@ Editor::mouse_select_button_release (GdkEventButton* ev)
 Editor::TrackViewList *
 Editor::get_valid_views (TimeAxisView* track, RouteGroup* group)
 {
-       TrackViewList *v;
        TrackViewList::iterator i;
 
-       v = new TrackViewList;
+       TrackViewList* v = new TrackViewList;
 
        if (track == 0 && group == 0) {
 
@@ -3939,7 +3595,7 @@ Editor::get_valid_views (TimeAxisView* track, RouteGroup* group)
                        v->push_back (*i);
                }
 
-       } else if ((track != 0 && group == 0) || (track != 0 && group != 0 && !group->is_active())) {
+       } else if ((track != 0 && group == 0) || (track != 0 && group != 0 && !group->active_property (RouteGroup::Select))) {
                
                /* just the view for this track
                 */
@@ -3948,11 +3604,11 @@ Editor::get_valid_views (TimeAxisView* track, RouteGroup* group)
 
        } else {
                
-               /* views for all tracks in the edit group */
+               /* views for all tracks in the route group */
                
-               for (i  = track_views.begin(); i != track_views.end (); ++i) {
+               for (i = track_views.begin(); i != track_views.end (); ++i) {
 
-                       if (group == 0 || (*i)->edit_group() == group) {
+                       if (group == 0 || ((*i)->route_group() == group && group->active_property (RouteGroup::Select))) {
                                v->push_back (*i);
                        }
                }
@@ -4041,8 +3697,10 @@ Editor::pane_allocation_handler (Allocation &alloc, Paned* which)
 }
 
 void
-Editor::detach_tearoff (Box* b, Window* w)
+Editor::detach_tearoff (Box* /*b*/, Window* /*w*/)
 {
+       cerr << "remove tearoff\n";
+
        if (tools_tearoff->torn_off() && 
            mouse_mode_tearoff->torn_off()) {
                top_hbox.remove (toolbar_frame);
@@ -4050,8 +3708,9 @@ Editor::detach_tearoff (Box* b, Window* w)
 }
 
 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);
        }
@@ -4219,14 +3878,13 @@ Editor::prepare_for_cleanup ()
        selection->clear_regions ();
        selection->clear_playlists ();
 
-       no_region_list_redisplay = true;
+       _regions->suspend_redisplay ();
 }
 
 void
 Editor::finish_cleanup ()
 {
-       no_region_list_redisplay = false;
-       redisplay_regions ();
+       _regions->resume_redisplay ();
 }
 
 Location*
@@ -4270,161 +3928,12 @@ 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<sys::path> state_file_paths;
-
-       get_state_files_in_directory (session->session_directory().root_path(),
-                       state_file_paths);
-
-       if (state_file_paths.empty()) return;
-
-       vector<string> state_file_names(get_file_names_no_extension(state_file_paths));
-
-       snapshot_display_model->clear ();
-
-       for (vector<string>::iterator i = state_file_names.begin();
-                       i != state_file_names.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;
-       }
-}
-
 void
 Editor::session_state_saved (string snap_name)
 {
        ENSURE_GUI_THREAD (bind (mem_fun(*this, &Editor::session_state_saved), snap_name));
-       redisplay_snapshots ();
+       
+       _snapshots->redisplay ();
 }
 
 void
@@ -4470,7 +3979,7 @@ Editor::restore_editing_space ()
 
 /**
  *  Make new playlists for a given track and also any others that belong
- *  to the same active edit group.
+ *  to the same active route group with the `edit' property.
  *  @param v Track.
  */
 
@@ -4480,13 +3989,13 @@ Editor::new_playlists (TimeAxisView* v)
        begin_reversible_command (_("new playlists"));
        vector<boost::shared_ptr<ARDOUR::Playlist> > playlists;
        session->get_playlists(playlists);
-       mapover_tracks ( bind(mem_fun (*this, &Editor::mapped_use_new_playlist), playlists), v );
+       mapover_tracks (bind (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 edit group.
+ *  to the same active route group with the `edit' property.
  *  @param v Track.
  */
 
@@ -4496,13 +4005,12 @@ Editor::copy_playlists (TimeAxisView* v)
        begin_reversible_command (_("copy playlists"));
        vector<boost::shared_ptr<ARDOUR::Playlist> > playlists;
        session->get_playlists(playlists);
-       mapover_tracks ( bind(mem_fun (*this, &Editor::mapped_use_copy_playlist), playlists), v );
+       mapover_tracks (bind (mem_fun (*this, &Editor::mapped_use_copy_playlist), playlists), v, RouteGroup::Edit);
        commit_reversible_command ();
 }
 
-/**
- *  Clear the current playlist for a given track and also any others that belong
- *  to the same active edit group.
+/** 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.
  */
 
@@ -4512,7 +4020,7 @@ Editor::clear_playlists (TimeAxisView* v)
        begin_reversible_command (_("clear playlists"));
        vector<boost::shared_ptr<ARDOUR::Playlist> > playlists;
        session->get_playlists(playlists);
-       mapover_tracks ( mem_fun (*this, &Editor::mapped_clear_playlist), v );
+       mapover_tracks (mem_fun (*this, &Editor::mapped_clear_playlist), v, RouteGroup::Edit);
        commit_reversible_command ();
 }
 
@@ -4529,7 +4037,7 @@ Editor::mapped_use_copy_playlist (RouteTimeAxisView& atv, uint32_t sz, vector<bo
 }
 
 void 
-Editor::mapped_clear_playlist (RouteTimeAxisView& atv, uint32_t sz)
+Editor::mapped_clear_playlist (RouteTimeAxisView& atv, uint32_t /*sz*/)
 {
        atv.clear_playlist ();
 }
@@ -4554,6 +4062,12 @@ Editor::reset_x_origin (nframes64_t frame)
        queue_visual_change (frame);
 }
 
+void
+Editor::reset_y_origin (double y)
+{
+       queue_visual_change_y (y);
+}
+
 void
 Editor::reset_zoom (double fpu)
 {
@@ -4631,7 +4145,8 @@ void
 Editor::use_visual_state (VisualState& vs)
 {
        no_save_visual = true;
-       no_route_list_redisplay = true;
+
+       _routes->suspend_redisplay ();
 
        vertical_adjustment.set_value (vs.y_position);
 
@@ -4651,11 +4166,10 @@ Editor::use_visual_state (VisualState& vs)
 
 
        if (!vs.track_states.empty()) {
-               update_route_visibility ();
+               _routes->update_visibility ();
        } 
 
-       no_route_list_redisplay = false;
-       redisplay_route_list ();
+       _routes->resume_redisplay ();
 
        no_save_visual = false;
 }
@@ -4698,7 +4212,7 @@ Editor::post_zoom ()
 
        // convert fpu to frame count
 
-       nframes64_t frames = (nframes64_t) floor (frames_per_unit * canvas_width);
+       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);
@@ -4716,6 +4230,7 @@ Editor::post_zoom ()
                }
        }
 
+       leftmost_frame = (nframes64_t) floor (horizontal_adjustment.get_value() * frames_per_unit);
 
        ZoomChanged (); /* EMIT_SIGNAL */
 
@@ -4732,13 +4247,16 @@ Editor::post_zoom ()
                playhead_cursor->set_position (playhead_cursor->current_frame);
        }
 
+       refresh_location_display();
+       _summary->set_overlays_dirty ();
+
        instant_save ();
 }
 
 void
 Editor::queue_visual_change (nframes64_t where)
 {
-       pending_visual_change.pending = VisualChange::Type (pending_visual_change.pending | VisualChange::TimeOrigin);
+       pending_visual_change.add (VisualChange::TimeOrigin);
        
        /* if we're moving beyond the end, make sure the upper limit of the horizontal adjustment
           can reach.
@@ -4750,21 +4268,34 @@ Editor::queue_visual_change (nframes64_t where)
        
        pending_visual_change.time_origin = where;
        
-       if (pending_visual_change.idle_handler_id < 0) {
-               pending_visual_change.idle_handler_id = g_idle_add (_idle_visual_changer, this);
-       }
+       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 ( _idle_visual_changer, this);
+               pending_visual_change.idle_handler_id = g_idle_add (_idle_visual_changer, this);
        }
-       
 }
 
 int
@@ -4794,7 +4325,10 @@ Editor::idle_visual_changer ()
        if (p & VisualChange::TimeOrigin) {
                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);
+       }
+       
        nframes64_t csf=0, cef=0;
        nframes64_t current_time_origin = (nframes64_t) floor (horizontal_adjustment.get_value() * frames_per_unit);
        
@@ -4821,6 +4355,9 @@ Editor::idle_visual_changer ()
                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 */
@@ -4903,17 +4440,17 @@ Editor::set_loop_range (nframes64_t start, nframes64_t end, string cmd)
 
        if ((tll = transport_loop_location()) == 0) {
                Location* loc = new Location (start, end, _("Loop"),  Location::IsAutoLoop);
-                XMLNode &before = session->locations()->get_state();
+               XMLNode &before = session->locations()->get_state();
                session->locations()->add (loc, true);
                session->set_auto_loop_location (loc);
-                XMLNode &after = session->locations()->get_state();
+               XMLNode &after = session->locations()->get_state();
                session->add_command (new MementoCommand<Locations>(*(session->locations()), &before, &after));
        } else {
-                XMLNode &before = tll->get_state();
+               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));
+               XMLNode &after = tll->get_state();
+               session->add_command (new MementoCommand<Location>(*tll, &before, &after));
        }
        
        commit_reversible_command ();
@@ -4930,23 +4467,28 @@ Editor::set_punch_range (nframes64_t start, nframes64_t end, string cmd)
 
        if ((tpl = transport_punch_location()) == 0) {
                Location* loc = new Location (start, end, _("Loop"),  Location::IsAutoPunch);
-                XMLNode &before = session->locations()->get_state();
+               XMLNode &before = session->locations()->get_state();
                session->locations()->add (loc, true);
                session->set_auto_loop_location (loc);
-                XMLNode &after = session->locations()->get_state();
+               XMLNode &after = session->locations()->get_state();
                session->add_command (new MementoCommand<Locations>(*(session->locations()), &before, &after));
        }
        else {
-                XMLNode &before = tpl->get_state();
+               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));
+               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 TrackSelection& ts) const
 {
@@ -5019,68 +4561,50 @@ Editor::get_regions_after (RegionSelection& rs, nframes64_t where, const TrackSe
        }
 }
 
+/** Find all regions which are either:
+ *      - selected or
+ *      - the entered_regionview (if allow_entered == true) or
+ *      - under the preferred edit position AND on a selected track, or on a track
+ *        which is in the same active edit-enable route group as a selected region.
+ *  @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)
 {
-       if (selection->regions.empty()) {
+       /* Start with selected regions */
+       rs = selection->regions;
 
-               if (selection->tracks.empty()) {
-
-                       /* no regions or tracks selected
-                       */
-                       
-                       if (entered_regionview && mouse_mode == Editing::MouseObject) {
-
-                               /*  entered regionview is valid and we're in object mode - 
-                                   just use entered regionview
-                               */
-
-                               rs.add (entered_regionview);
-                       }
-
-                       return;
-
-               } else {
+       /* Add the entered_regionview, if requested */
+       if (allow_entered && entered_regionview) {
+               rs.add (entered_regionview);
+       }
 
-                       /* no regions selected, so get all regions at the edit point across
-                          all selected tracks. 
-                       */
+       TrackSelection tracks = selection->tracks;
 
-                       nframes64_t where = get_preferred_edit_position();
-                       get_regions_at (rs, where, selection->tracks);
+       RegionSelection to_map = rs;
 
-                       /* if the entered regionview wasn't selected and neither was its track
-                          then add it.
-                       */
+       /* 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 = to_map.begin (); i != to_map.end(); ++i) {
 
-                       if (entered_regionview != 0 &&
-                           !selection->selected (entered_regionview) && 
-                           !selection->selected (&entered_regionview->get_time_axis_view())) {
-                               rs.add (entered_regionview);
-                       }
-               }
-
-       } else {
-               
-               /* just use the selected regions */
-
-               rs = selection->regions;
-
-               /* if the entered regionview wasn't selected and we allow this sort of thing,
-                  then add it.
-               */
-
-               if (allow_entered && entered_regionview && !selection->selected (entered_regionview)) {
-                       rs.add (entered_regionview);
+               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()));
                }
+       }
 
+       /* now find regions that are at the edit position on those tracks */
+       for (RegionSelection::iterator i = to_map.begin (); i != to_map.end(); ++i) {
+               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;
@@ -5163,187 +4687,313 @@ Editor::first_idle ()
        }
 
        // first idle adds route children (automation tracks), so we need to redisplay here
-       redisplay_route_list();
+       _routes->redisplay ();
        
        delete dialog;
 
        _have_idled = true;
 }
 
-void
-Editor::start_resize_line_ops ()
+static gboolean
+_idle_resizer (gpointer arg)
 {
-#if 0
-       old_resize_line_y = -1;
-       resize_line_y = -1;
-       need_resize_line = true;
-#endif 
+       return ((Editor*)arg)->idle_resize ();
 }
 
 void
-Editor::end_resize_line_ops ()
+Editor::add_to_idle_resize (TimeAxisView* view, int32_t h)
 {
-#if 0
-       need_resize_line = false;
-
-       if (old_resize_line_y >= 0) {
-               Gdk::Rectangle r (0, old_resize_line_y, (int) canvas_width, 3);
-               Glib::RefPtr<Gdk::Window> win = get_window();
-               cerr << "Final invalidation at " << old_resize_line_y << endl;
-               win->invalidate_rect (r, false);
+       if (resize_idle_id < 0) {
+               resize_idle_id = g_idle_add (_idle_resizer, this);
+               _pending_resize_amount = 0;
        }
-#endif
-}
 
-void
-Editor::queue_draw_resize_line (int at)
-{
-#if 0  
-       Glib::RefPtr<Gdk::Window> win = get_window();
+       /* make a note of the smallest resulting height, so that we can clamp the
+          lower limit at TimeAxisView::hSmall */
 
-       resize_line_y = at;
+       int32_t min_resulting = INT32_MAX;
 
-       if (win && canvas_width) {
+       _pending_resize_amount += h;
+       _pending_resize_view = view;
 
-               int controls_width = controls_layout.get_width();
-               int xroot, discard;
-               
-               controls_layout.get_window()->get_origin (xroot, discard);
+       min_resulting = min (min_resulting, int32_t (_pending_resize_view->current_height()) + _pending_resize_amount);
 
-               if (old_resize_line_y >= 0) {
-                       
-                       /* redraw where it used to be */
-                       
-                       
-                       Gdk::Rectangle r (0, old_resize_line_y - 1, controls_width + (int) canvas_width, 3);
-                       win->invalidate_rect (r, true);
-                       cerr << "invalidate " << xroot << "," << old_resize_line_y - 1 << ' ' 
-                            << controls_width + canvas_width << " x 3\n";
+       if (selection->tracks.contains (_pending_resize_view)) {
+               for (TrackSelection::iterator i = selection->tracks.begin(); i != selection->tracks.end(); ++i) {
+                       min_resulting = min (min_resulting, int32_t ((*i)->current_height()) + _pending_resize_amount);
                }
+       }
 
-               /* draw where it is */
+       if (min_resulting < 0) {
+               min_resulting = 0;
+       }
 
-               Gdk::Rectangle r (0, at - 1, controls_width + (int) canvas_width, 3);
-               win->invalidate_rect (r, true);
+       /* clamp */
+       if (uint32_t (min_resulting) < TimeAxisView::hSmall) {
+               _pending_resize_amount += TimeAxisView::hSmall - min_resulting;
        }
-#endif
 }
 
+/** Handle pending resizing of tracks */
 bool
-Editor::on_expose_event (GdkEventExpose* ev)
-{
-       /* cerr << "+++ editor expose "
-            << ev->area.x << ',' << ev->area.y
-            << ' '
-            << ev->area.width << " x " << ev->area.height
-            << " need reize ? " << need_resize_line
-            << endl;
-       */
-       bool ret = Window::on_expose_event (ev);
+Editor::idle_resize ()
+{
+       _pending_resize_view->idle_resize (_pending_resize_view->current_height() + _pending_resize_amount);
 
-#if 0
-       if (need_resize_line) {
+       if (dynamic_cast<AutomationTimeAxisView*> (_pending_resize_view) == 0 &&
+           selection->tracks.contains (_pending_resize_view)) {
                
-               int xroot, yroot, discard;
-               int controls_width;
+               for (TrackSelection::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;
+}
 
-               /* Our root coordinates for drawing the line will be the left edge 
-                  of the track controls, and the upper left edge of our own window.
-               */
+void
+Editor::located ()
+{
+       ENSURE_GUI_THREAD (mem_fun (*this, &Editor::located));
 
-               get_window()->get_origin (discard, yroot);
-               controls_layout.get_window()->get_origin (xroot, discard);
-               controls_width = controls_layout.get_width();
-               
-               GdkRectangle lr;
-               GdkRectangle intersection;
+       _pending_locate_request = false;
+}
 
-               lr.x = 0;
-               lr.y = resize_line_y;
-               lr.width = controls_width + (int) canvas_width;
-               lr.height = 3;
+void
+Editor::region_view_added (RegionView *)
+{
+       _summary->set_dirty ();
+}
 
-               if (gdk_rectangle_intersect (&lr, &ev->area, &intersection)) {
-                       
-                       Glib::RefPtr<Gtk::Style> style (get_style());
-                       Glib::RefPtr<Gdk::GC> black_gc (style->get_black_gc ());
-                       Glib::RefPtr<Gdk::GC> gc = wrap (black_gc->gobj_copy(), false);
+void
+Editor::streamview_height_changed ()
+{
+       _summary->set_dirty ();
+}
 
-                       /* draw on root window */
+TimeAxisView*
+Editor::axis_view_from_route (Route* r) const
+{
+       TrackViewList::const_iterator j = track_views.begin ();
+       while (j != track_views.end()) {
+               RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (*j);
+               if (rtv && rtv->route().get() == r) {
+                       return rtv;
+               }
+               ++j;
+       }
 
-                       GdkWindow* win = gdk_get_default_root_window();
-                       
-                       gc->set_subwindow (Gdk::INCLUDE_INFERIORS);
-                       gc->set_line_attributes (3, Gdk::LINE_SOLID, 
-                                                Gdk::CAP_NOT_LAST,
-                                                Gdk::JOIN_MITER);
-                       
-                       gdk_draw_line (win, gc->gobj(), 
-                                      0,
-                                      resize_line_y, 
-                                      (int) canvas_width + controls_width,
-                                      resize_line_y);
-#if 0
-                       cerr << "drew line @ " << xroot << ", " << yroot + resize_line_y 
-                            << " to " << xroot + (int) canvas_width + controls_width
-                            << ", " << yroot + resize_line_y
-                            << endl;
-#endif
-                       old_resize_line_y = resize_line_y;
-                       cerr << "NEXT EXPOSE SHOULD BE AT " << old_resize_line_y << endl;
+       return 0;
+}
+
+
+TrackSelection
+Editor::axis_views_from_routes (list<Route*> r) const
+{
+       TrackSelection t;
+       
+       for (list<Route*>::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 (bind (mem_fun (*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 {
-                       cerr << "no intersect with "
-                            << lr.x << ',' << lr.y
-                            << ' '
-                            << lr.width << " x " << lr.height
-                            << endl;
+                       throw unknown_type();
                }
+
+               new_views.push_back (rtv);
+               track_views.push_back (rtv);
+               
+               rtv->effective_gain_display ();
+               
+               rtv->view()->RegionViewAdded.connect (mem_fun (*this, &Editor::region_view_added));
+               rtv->view()->HeightChanged.connect (mem_fun (*this, &Editor::streamview_height_changed));
+               
+               rtv->GoingAway.connect (bind (mem_fun(*this, &Editor::remove_route), rtv));
        }
 
-       //cerr << "--- editor expose\n";
-#endif
+       _routes->routes_added (new_views);
 
-       return ret;
+       if (show_editor_mixer_when_tracks_arrive) {
+               show_editor_mixer (true);
+       }
+
+       editor_list_button.set_sensitive (true);
+
+       _summary->set_dirty ();
 }
 
-static gboolean
-_idle_resizer (gpointer arg)
+void
+Editor::remove_route (TimeAxisView *tv)
 {
-       return ((Editor*)arg)->idle_resize ();
+       ENSURE_GUI_THREAD(bind (mem_fun(*this, &Editor::remove_route), tv));
+
+       TrackViewList::iterator i;
+       boost::shared_ptr<Route> route;
+       TimeAxisView* next_tv;
+
+       if (tv == entered_track) {
+               entered_track = 0;
+       }
+
+       if ((i = find (track_views.begin(), track_views.end(), tv)) != track_views.end()) {
+
+               i = track_views.erase (i);
+
+               if (track_views.empty()) {
+                       next_tv = 0;
+               } else if (i == track_views.end()) {
+                       next_tv = track_views.front();
+               } else {
+                      next_tv = (*i);
+               }
+       }
+       
+       if (current_mixer_strip && current_mixer_strip->route() == route) {
+
+               if (next_tv) {
+                       set_selected_mixer_strip (*next_tv);
+               } else {
+                       /* make the editor mixer strip go away setting the
+                        * button to inactive (which also unticks the menu option)
+                        */
+
+                       ActionManager::uncheck_toggleaction ("<Actions>/Editor/show-editor-mixer");
+               }
+       } 
 }
 
 void
-Editor::add_to_idle_resize (TimeAxisView* view, uint32_t h)
+Editor::hide_track_in_display (TimeAxisView& tv, bool /*temponly*/)
 {
-       if (resize_idle_id < 0) {
-               resize_idle_id = g_idle_add (_idle_resizer, this);
-       } 
+       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);
+       }
 
-       resize_idle_target = h;
+       _routes->hide_track_in_display (tv);
+}
 
-       pending_resizes.push_back (view);
+bool
+Editor::sync_track_view_list_and_routes ()
+{
+       track_views = TrackSelection (_routes->views ());
+       
+       _summary->set_dirty ();
+       _group_tabs->set_dirty ();
+       
+       return false; // do not call again (until needed)
+}
 
-       if (selection->selected (view) && !selection->tracks.empty()) {
-               pending_resizes.insert (pending_resizes.end(), selection->tracks.begin(), selection->tracks.end());
+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);
        }
 }
 
-bool
-Editor::idle_resize ()
+RouteTimeAxisView*
+Editor::get_route_view_by_id (PBD::ID& id)
 {
-       for (vector<TimeAxisView*>::iterator i = pending_resizes.begin(); i != pending_resizes.end(); ++i) {
-               (*i)->idle_resize (resize_idle_target);
+       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;
+                       }
+               }
        }
-       pending_resizes.clear();
-       flush_canvas ();
-       resize_idle_id = -1;
-       return false;
+
+       return 0;
 }
 
 void
-Editor::located ()
+Editor::fit_route_group (RouteGroup *g)
 {
-       ENSURE_GUI_THREAD (mem_fun (*this, &Editor::located));
+       TrackSelection ts = axis_views_from_routes (g->route_list ());
+       fit_tracks (ts);
+}
 
-       _pending_locate_request = false;
+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 (mem_fun (*this, &Editor::consider_auditioning));
+}
+
+void
+Editor::hide_region_from_region_list ()
+{
+       _regions->selection_mapover (mem_fun (*this, &Editor::hide_a_region));
+}
+