Better choice for ports on external send creation
[ardour.git] / gtk2_ardour / processor_box.cc
index 509ffaaa470613d4aa0edbfaf4e0a08e40994f90..852acf230f1de0323bf61909ccf2c3005aeb7041 100644 (file)
 #include <sigc++/bind.h>
 
 #include "pbd/convert.h"
+#include "canvas/utils.h"
 
 #include <glibmm/miscutils.h>
+#include <glibmm/fileutils.h>
 
 #include <gtkmm/messagedialog.h>
 
@@ -45,6 +47,8 @@
 #include "ardour/audioengine.h"
 #include "ardour/internal_return.h"
 #include "ardour/internal_send.h"
+#include "ardour/luaproc.h"
+#include "ardour/luascripting.h"
 #include "ardour/meter.h"
 #include "ardour/panner_shell.h"
 #include "ardour/plugin_insert.h"
 #include "ardour/session.h"
 #include "ardour/types.h"
 
+#include "LuaBridge/LuaBridge.h"
+
 #include "actions.h"
 #include "ardour_dialog.h"
 #include "ardour_ui.h"
 #include "gui_thread.h"
 #include "io_selector.h"
 #include "keyboard.h"
+#include "luainstance.h"
 #include "mixer_ui.h"
 #include "mixer_strip.h"
+#include "plugin_pin_dialog.h"
 #include "plugin_selector.h"
 #include "plugin_ui.h"
 #include "port_insert_ui.h"
 #include "public_editor.h"
 #include "return_ui.h"
 #include "route_processor_selection.h"
+#include "script_selector.h"
 #include "send_ui.h"
 #include "timers.h"
 #include "tooltips.h"
+#include "new_plugin_preset_dialog.h"
 
-#include "i18n.h"
+#include "pbd/i18n.h"
 
 #ifdef AUDIOUNIT_SUPPORT
 class AUPluginUI;
@@ -93,32 +103,57 @@ using namespace Gtk;
 using namespace Glib;
 using namespace Gtkmm2ext;
 
-ProcessorBox* ProcessorBox::_current_processor_box = 0;
+ProcessorBox*  ProcessorBox::_current_processor_box = 0;
 RefPtr<Action> ProcessorBox::paste_action;
 RefPtr<Action> ProcessorBox::cut_action;
 RefPtr<Action> ProcessorBox::copy_action;
 RefPtr<Action> ProcessorBox::rename_action;
 RefPtr<Action> ProcessorBox::delete_action;
+RefPtr<Action> ProcessorBox::backspace_action;
+RefPtr<Action> ProcessorBox::manage_pins_action;
 RefPtr<Action> ProcessorBox::edit_action;
 RefPtr<Action> ProcessorBox::edit_generic_action;
+RefPtr<ActionGroup> ProcessorBox::processor_box_actions;
+Gtkmm2ext::ActionMap ProcessorBox::myactions (X_("processor box"));
+Gtkmm2ext::Bindings* ProcessorBox::bindings = 0;
+
+
+// TODO consolidate with PluginPinDialog::set_color
+static void set_routing_color (cairo_t* cr, bool midi)
+{
+       static const uint32_t audio_port_color = 0x4A8A0EFF; // Green
+       static const uint32_t midi_port_color = 0x960909FF; //Red
 
-static const uint32_t audio_port_color = 0x4A8A0EFF; // Green
-static const uint32_t midi_port_color = 0x960909FF; //Red
+       if (midi) {
+               cairo_set_source_rgb (cr,
+                               UINT_RGBA_R_FLT(midi_port_color),
+                               UINT_RGBA_G_FLT(midi_port_color),
+                               UINT_RGBA_B_FLT(midi_port_color));
+       } else {
+               cairo_set_source_rgb (cr,
+                               UINT_RGBA_R_FLT(audio_port_color),
+                               UINT_RGBA_G_FLT(audio_port_color),
+                               UINT_RGBA_B_FLT(audio_port_color));
+       }
+}
 
 ProcessorEntry::ProcessorEntry (ProcessorBox* parent, boost::shared_ptr<Processor> p, Width w)
        : _button (ArdourButton::led_default_elements)
        , _position (PreFader)
        , _position_num(0)
+       , _parent (parent)
        , _selectable(true)
        , _unknown_processor(false)
-       , _parent (parent)
        , _processor (p)
        , _width (w)
-       , _input_icon(true)
-       , _output_icon(false)
+       , input_icon(true)
+       , output_icon(false)
+       , routing_icon(true)
+       , output_routing_icon(false)
+       , _plugin_display(0)
 {
        _vbox.show ();
-       
+
        _button.set_distinct_led_click (true);
        _button.set_fallthrough_to_parent(true);
        _button.set_led_left (true);
@@ -132,22 +167,49 @@ ProcessorEntry::ProcessorEntry (ProcessorBox* parent, boost::shared_ptr<Processo
                _button.set_elements(ArdourButton::Element(_button.elements() & ~ArdourButton::Indicator));
                _unknown_processor = true;
        }
+       {
+               boost::shared_ptr<PluginInsert> pi = boost::dynamic_pointer_cast<PluginInsert> (_processor);
+               if (pi && pi->plugin()) {
+                       _plugin_preset_pointer = PluginPresetPtr (new PluginPreset (pi->plugin()->get_info()));
+               }
+       }
        if (_processor) {
 
-               _vbox.pack_start (_routing_icon);
-               _vbox.pack_start (_input_icon);
+               _vbox.pack_start (routing_icon);
+               _vbox.pack_start (input_icon);
                _vbox.pack_start (_button, true, true);
-               _vbox.pack_end (_output_icon);
 
-               _button.set_active (_processor->active());
+               boost::shared_ptr<PluginInsert> pi = boost::dynamic_pointer_cast<PluginInsert> (_processor);
+               if (pi && pi->plugin() && pi->plugin()->has_inline_display()) {
+                       if (pi->plugin()->get_info()->type != ARDOUR::Lua) {
+                               _plugin_display = new PluginDisplay (*this, pi->plugin(),
+                                               std::max (60.f, rintf(112.f * UIConfiguration::instance().get_ui_scale())));
+                       } else {
+                               assert (boost::dynamic_pointer_cast<LuaProc>(pi->plugin()));
+                               _plugin_display = new LuaPluginDisplay (*this, boost::dynamic_pointer_cast<LuaProc>(pi->plugin()),
+                                               std::max (60.f, rintf(112.f * UIConfiguration::instance().get_ui_scale())));
+                       }
+                       _vbox.pack_start (*_plugin_display);
+                       _plugin_display->set_no_show_all (true);
+                       if (UIConfiguration::instance().get_show_inline_display_by_default ()) {
+                               _plugin_display->show ();
+                       }
+               }
+               _vbox.pack_end (output_routing_icon);
+               _vbox.pack_end (output_icon);
+
+               _button.set_active (_processor->enabled ());
 
-               _routing_icon.set_no_show_all(true);
-               _input_icon.set_no_show_all(true);
+               input_icon.set_no_show_all(true);
+               routing_icon.set_no_show_all(true);
+               output_icon.set_no_show_all(true);
+               output_routing_icon.set_no_show_all(true);
 
                _button.show ();
-               _routing_icon.set_visible(false);
-               _input_icon.hide();
-               _output_icon.show();
+               input_icon.hide();
+               output_icon.show();
+               routing_icon.hide();
+               output_routing_icon.hide();
 
                _processor->ActiveChanged.connect (active_connection, invalidator (*this), boost::bind (&ProcessorEntry::processor_active_changed, this), gui_context());
                _processor->PropertyChanged.connect (name_connection, invalidator (*this), boost::bind (&ProcessorEntry::processor_property_changed, this, _1), gui_context());
@@ -155,7 +217,7 @@ ProcessorEntry::ProcessorEntry (ProcessorBox* parent, boost::shared_ptr<Processo
 
                set<Evoral::Parameter> p = _processor->what_can_be_automated ();
                for (set<Evoral::Parameter>::iterator i = p.begin(); i != p.end(); ++i) {
-                       
+
                        std::string label = _processor->describe_parameter (*i);
 
                        if (boost::dynamic_pointer_cast<Send> (_processor)) {
@@ -165,7 +227,7 @@ ProcessorEntry::ProcessorEntry (ProcessorBox* parent, boost::shared_ptr<Processo
                        }
 
                        Control* c = new Control (_processor->automation_control (*i), label);
-                       
+
                        _controls.push_back (c);
 
                        if (boost::dynamic_pointer_cast<Amp> (_processor) == 0) {
@@ -174,12 +236,6 @@ ProcessorEntry::ProcessorEntry (ProcessorBox* parent, boost::shared_ptr<Processo
                        }
                }
 
-               _input_icon.set_ports(_processor->input_streams());
-               _output_icon.set_ports(_processor->output_streams());
-
-               _routing_icon.set_sources(_processor->input_streams());
-               _routing_icon.set_sinks(_processor->output_streams());
-
                setup_tooltip ();
                setup_visuals ();
        } else {
@@ -192,6 +248,7 @@ ProcessorEntry::~ProcessorEntry ()
        for (list<Control*>::iterator i = _controls.begin(); i != _controls.end(); ++i) {
                delete *i;
        }
+       delete _plugin_display;
 }
 
 EventBox&
@@ -212,18 +269,99 @@ ProcessorEntry::drag_text () const
        return name (Wide);
 }
 
+bool
+ProcessorEntry::can_copy_state (Gtkmm2ext::DnDVBoxChild* o) const
+{
+       ProcessorEntry *other = dynamic_cast<ProcessorEntry*> (o);
+       if (!other) {
+               return false;
+       }
+       boost::shared_ptr<ARDOUR::Processor> otherproc = other->processor();
+       boost::shared_ptr<PluginInsert> my_pi = boost::dynamic_pointer_cast<PluginInsert> (_processor);
+       boost::shared_ptr<PluginInsert> ot_pi = boost::dynamic_pointer_cast<PluginInsert> (otherproc);
+       if (boost::dynamic_pointer_cast<UnknownProcessor> (_processor)) {
+               return false;
+       }
+       if (boost::dynamic_pointer_cast<UnknownProcessor> (otherproc)) {
+               return false;
+       }
+       if (!my_pi || !ot_pi) {
+               return false;
+       }
+       if (my_pi->type() != ot_pi->type()) {
+               return false;
+       }
+       boost::shared_ptr<Plugin> my_p = my_pi->plugin();
+       boost::shared_ptr<Plugin> ot_p = ot_pi->plugin();
+       if (!my_p || !ot_p) {
+               return false;
+       }
+       if (my_p->unique_id() != ot_p->unique_id()) {
+               return false;
+       }
+       return true;
+}
+
+bool
+ProcessorEntry::drag_data_get (Glib::RefPtr<Gdk::DragContext> const, Gtk::SelectionData &data)
+{
+       if (data.get_target() == "PluginPresetPtr") {
+               boost::shared_ptr<PluginInsert> pi = boost::dynamic_pointer_cast<PluginInsert> (_processor);
+
+               if (!_plugin_preset_pointer || !pi) {
+                       data.set (data.get_target(), 8, NULL, 0);
+                       return true;
+               }
+
+               boost::shared_ptr<ARDOUR::Plugin> plugin = pi->plugin();
+               assert (plugin);
+
+               PluginManager& manager (PluginManager::instance());
+               bool fav = manager.get_status (_plugin_preset_pointer->_pip) == PluginManager::Favorite;
+
+               NewPluginPresetDialog d (plugin,
+                               string_compose(_("New Favorite Preset for \"%1\""),_plugin_preset_pointer->_pip->name), !fav);
+
+               _plugin_preset_pointer->_preset.valid = false;
+
+               switch (d.run ()) {
+                       case Gtk::RESPONSE_CANCEL:
+                               data.set (data.get_target(), 8, NULL, 0);
+                               return true;
+                               break;
+
+                       case Gtk::RESPONSE_NO:
+                               break;
+
+                       case Gtk::RESPONSE_ACCEPT:
+                               if (d.name().empty()) {
+                                       break;
+                               }
+
+                               if (d.replace ()) {
+                                       plugin->remove_preset (d.name ());
+                               }
+
+                               Plugin::PresetRecord const r = plugin->save_preset (d.name());
+
+                               if (!r.uri.empty ()) {
+                                       _plugin_preset_pointer->_preset.uri   = r.uri;
+                                       _plugin_preset_pointer->_preset.label = r.label;
+                                       _plugin_preset_pointer->_preset.user  = r.user;
+                                       _plugin_preset_pointer->_preset.valid = r.valid;
+                               }
+               }
+               data.set (data.get_target(), 8, (const guchar *) &_plugin_preset_pointer, sizeof (PluginPresetPtr));
+               return true;
+       }
+       return false;
+}
+
 void
 ProcessorEntry::set_position (Position p, uint32_t num)
 {
        _position = p;
        _position_num = num;
-
-       if (_position_num == 0 || _routing_icon.get_visible()) {
-               _input_icon.show();
-       } else {
-               _input_icon.hide();
-       }
-
        setup_visuals ();
 }
 
@@ -244,9 +382,17 @@ ProcessorEntry::setup_visuals ()
                _button.set_name ("processor stub");
                return;
        }
+       boost::shared_ptr<Send> send;
+       if ((send = boost::dynamic_pointer_cast<Send> (_processor))) {
+               if (send->remove_on_disconnect ()) {
+                       _button.set_name ("processor sidechain");
+                       return;
+               }
+       }
 
        switch (_position) {
        case PreFader:
+               if (_plugin_display) { _plugin_display->set_name ("processor prefader"); }
                _button.set_name ("processor prefader");
                break;
 
@@ -255,6 +401,7 @@ ProcessorEntry::setup_visuals ()
                break;
 
        case PostFader:
+               if (_plugin_display) { _plugin_display->set_name ("processor postfader"); }
                _button.set_name ("processor postfader");
                break;
        }
@@ -264,6 +411,9 @@ ProcessorEntry::setup_visuals ()
 boost::shared_ptr<Processor>
 ProcessorEntry::processor () const
 {
+       if (!_processor) {
+               return boost::shared_ptr<Processor>();
+       }
        return _processor;
 }
 
@@ -275,13 +425,39 @@ ProcessorEntry::set_enum_width (Width w)
 }
 
 void
-ProcessorEntry::led_clicked()
+ProcessorEntry::led_clicked(GdkEventButton *ev)
 {
+       bool ctrl_shift_pressed = false;
+       Keyboard::ModifierMask ctrl_shift_mask = Keyboard::ModifierMask (Keyboard::PrimaryModifier|Keyboard::TertiaryModifier);
+
+       if (Keyboard::modifier_state_equals (ev->state, ctrl_shift_mask)) {
+               ctrl_shift_pressed = true;
+       }
+
        if (_processor) {
                if (_button.get_active ()) {
-                       _processor->deactivate ();
+                       if (ctrl_shift_pressed) {
+                               _parent->all_visible_processors_active(false);
+
+                               if (_position == Fader) {
+                                       _processor->enable (false);
+                               }
+                       }
+                       else {
+                               _processor->enable (false);
+                       }
+
                } else {
-                       _processor->activate ();
+                       if (ctrl_shift_pressed) {
+                               _parent->all_visible_processors_active(true);
+
+                               if (_position == Fader) {
+                                       _processor->enable (true);
+                               }
+                       }
+                       else {
+                               _processor->enable (true);
+                       }
                }
        }
 }
@@ -290,7 +466,7 @@ void
 ProcessorEntry::processor_active_changed ()
 {
        if (_processor) {
-               _button.set_active (_processor->active());
+               _button.set_active (_processor->enabled ());
        }
 }
 
@@ -306,13 +482,11 @@ ProcessorEntry::processor_property_changed (const PropertyChange& what_changed)
 void
 ProcessorEntry::processor_configuration_changed (const ChanCount in, const ChanCount out)
 {
-       _input_icon.set_ports(in);
-       _output_icon.set_ports(out);
-       _routing_icon.set_sources(in);
-       _routing_icon.set_sinks(out);
-       _input_icon.queue_draw();
-       _output_icon.queue_draw();
-       _routing_icon.queue_draw();
+       _parent->setup_routing_feeds ();
+       input_icon.queue_draw();
+       output_icon.queue_draw();
+       routing_icon.queue_draw();
+       output_routing_icon.queue_draw();
 }
 
 void
@@ -328,7 +502,7 @@ ProcessorEntry::setup_tooltip ()
                        }
                        if (pi->plugin()->has_editor()) {
                                ARDOUR_UI_UTILS::set_tooltip (_button,
-                                               string_compose (_("<b>%1</b>\nDouble-click to show GUI.\nAlt+double-click to show generic GUI.%2"), name (Wide), postfix));
+                                               string_compose (_("<b>%1</b>\nDouble-click to show GUI.\n%2+double-click to show generic GUI.%3"), name (Wide), Keyboard::primary_modifier_name (), postfix));
                        } else {
                                ARDOUR_UI_UTILS::set_tooltip (_button,
                                                string_compose (_("<b>%1</b>\nDouble-click to show generic GUI.%2"), name (Wide), postfix));
@@ -340,6 +514,16 @@ ProcessorEntry::setup_tooltip ()
                                        string_compose (_("<b>%1</b>\nThe Plugin is not available on this system\nand has been replaced by a stub."), name (Wide)));
                        return;
                }
+               boost::shared_ptr<Send> send;
+               if ((send = boost::dynamic_pointer_cast<Send> (_processor)) != 0 &&
+                               !boost::dynamic_pointer_cast<InternalSend>(_processor)) {
+                       if (send->remove_on_disconnect ()) {
+                               ARDOUR_UI_UTILS::set_tooltip (_button, string_compose ("<b>&gt; %1</b>\nThis (sidechain) send will be removed when disconnected.", _processor->name()));
+                       } else {
+                               ARDOUR_UI_UTILS::set_tooltip (_button, string_compose ("<b>&gt; %1</b>", _processor->name()));
+                       }
+                       return;
+               }
        }
        ARDOUR_UI_UTILS::set_tooltip (_button, string_compose ("<b>%1</b>", name (Wide)));
 }
@@ -358,19 +542,52 @@ ProcessorEntry::name (Width w) const
            !boost::dynamic_pointer_cast<InternalSend>(_processor)) {
 
                name_display += '>';
+               std::string send_name;
+               bool pretty_ok = true;
+
+               if (send->remove_on_disconnect ()) {
+                       // assume it's a sidechain, find pretty name of connected port(s)
+                       PortSet& ps (send->output ()->ports ());
+                       for (PortSet::iterator i = ps.begin (); i != ps.end () && pretty_ok; ++i) {
+                               vector<string> connections;
+                               if (i->get_connections (connections)) {
+                                       vector<string>::const_iterator ci;
+                                       for (ci = connections.begin(); ci != connections.end(); ++ci) {
+                                               std::string pn = AudioEngine::instance()->get_pretty_name_by_name (*ci);
+                                               if (pn.empty ()) {
+                                                       continue;
+                                               }
+                                               if (send_name.empty ()) {
+                                                       send_name = pn;
+                                               } else if (send_name != pn) {
+                                                       // pretty names don't match
+                                                       pretty_ok = false;
+                                                       break;
+                                               }
+                                       }
+                               }
+                       }
+               }
 
-               /* grab the send name out of its overall name */
+               if (!pretty_ok) {
+                       send_name = "";
+               }
 
-               string::size_type lbracket, rbracket;
-               lbracket = send->name().find ('[');
-               rbracket = send->name().find (']');
+               /* grab the send name out of its overall name */
+               if (send_name.empty()) {
+                       send_name = send->name();
+                       string::size_type lbracket, rbracket;
+                       lbracket = send_name.find ('[');
+                       rbracket = send_name.find (']');
+                       send_name = send_name.substr (lbracket+1, lbracket-rbracket-1);
+               }
 
                switch (w) {
                case Wide:
-                       name_display += send->name().substr (lbracket+1, lbracket-rbracket-1);
+                       name_display += send_name;
                        break;
                case Narrow:
-                       name_display += PBD::short_version (send->name().substr (lbracket+1, lbracket-rbracket-1), 4);
+                       name_display += PBD::short_version (send_name, 5);
                        break;
                }
 
@@ -423,6 +640,13 @@ ProcessorEntry::add_control_state (XMLNode* node) const
        for (list<Control*>::const_iterator i = _controls.begin(); i != _controls.end(); ++i) {
                (*i)->add_state (node);
        }
+
+       if (_plugin_display) {
+               XMLNode* c = new XMLNode (X_("Object"));
+               c->add_property (X_("id"), X_("InlineDisplay"));
+               c->add_property (X_("visible"), _plugin_display->is_visible ());
+               node->add_child_nocopy (*c);
+       }
 }
 
 void
@@ -431,6 +655,18 @@ ProcessorEntry::set_control_state (XMLNode const * node)
        for (list<Control*>::const_iterator i = _controls.begin(); i != _controls.end(); ++i) {
                (*i)->set_state (node);
        }
+
+       if (_plugin_display) {
+               XMLNode* n = GUIObjectState::get_node (node, X_("InlineDisplay"));
+               XMLProperty const * p = n ? n->property (X_("visible")) : NULL;
+               if (p) {
+                       if (string_is_affirmative (p->value ())) {
+                               _plugin_display->show();
+                       } else {
+                               _plugin_display->hide();
+                       }
+               }
+       }
 }
 
 string
@@ -455,10 +691,18 @@ ProcessorEntry::build_controls_menu ()
        Menu* menu = manage (new Menu);
        MenuList& items = menu->items ();
 
+       if (_plugin_display) {
+               items.push_back (CheckMenuElem (_("Inline Display")));
+               Gtk::CheckMenuItem* c = dynamic_cast<Gtk::CheckMenuItem*> (&items.back ());
+               c->set_active (_plugin_display->is_visible ());
+               c->signal_toggled().connect (sigc::mem_fun (*this, &ProcessorEntry::toggle_inline_display_visibility));
+               items.push_back (SeparatorElem ());
+       }
+
        items.push_back (
                MenuElem (_("Show All Controls"), sigc::mem_fun (*this, &ProcessorEntry::show_all_controls))
                );
-               
+
        items.push_back (
                MenuElem (_("Hide All Controls"), sigc::mem_fun (*this, &ProcessorEntry::hide_all_controls))
                );
@@ -466,7 +710,7 @@ ProcessorEntry::build_controls_menu ()
        if (!_controls.empty ()) {
                items.push_back (SeparatorElem ());
        }
-       
+
        for (list<Control*>::iterator i = _controls.begin(); i != _controls.end(); ++i) {
                items.push_back (CheckMenuElem ((*i)->name ()));
                Gtk::CheckMenuItem* c = dynamic_cast<Gtk::CheckMenuItem*> (&items.back ());
@@ -477,6 +721,17 @@ ProcessorEntry::build_controls_menu ()
        return menu;
 }
 
+void
+ProcessorEntry::toggle_inline_display_visibility ()
+{
+       if (_plugin_display->is_visible ()) {
+               _plugin_display->hide();
+       } else {
+               _plugin_display->show();
+       }
+       _parent->update_gui_object_state (this);
+}
+
 void
 ProcessorEntry::toggle_control_visibility (Control* c)
 {
@@ -533,12 +788,12 @@ ProcessorEntry::Control::Control (boost::shared_ptr<AutomationControl> c, string
                _button.show ();
 
                _button.signal_clicked.connect (sigc::mem_fun (*this, &Control::button_clicked));
-               _button.signal_led_clicked.connect (sigc::mem_fun (*this, &Control::button_clicked));
+               _button.signal_led_clicked.connect (sigc::mem_fun (*this, &Control::button_clicked_event));
                // dup. currently timers are used :(
                //c->Changed.connect (_connection, MISSING_INVALIDATOR, boost::bind (&Control::control_changed, this), gui_context ());
 
        } else {
-               
+
                _slider.set_name ("ProcessorControlSlider");
                _slider.set_text (_name);
 
@@ -569,7 +824,7 @@ ProcessorEntry::Control::Control (boost::shared_ptr<AutomationControl> c, string
                _adjustment.set_step_increment (smallstep);
                _adjustment.set_page_increment (largestep);
                _slider.set_default_value (normal);
-               
+
                _adjustment.signal_value_changed().connect (sigc::mem_fun (*this, &Control::slider_adjusted));
                // dup. currently timers are used :(
                //c->Changed.connect (_connection, MISSING_INVALIDATOR, boost::bind (&Control::control_changed, this), gui_context ());
@@ -578,7 +833,7 @@ ProcessorEntry::Control::Control (boost::shared_ptr<AutomationControl> c, string
        // yuck, do we really need to do this?
        // according to c404374 this is only needed for send automation
        timer_connection = Timers::rapid_connect (sigc::mem_fun (*this, &Control::control_changed));
-       
+
        control_changed ();
        set_tooltip ();
 
@@ -606,7 +861,7 @@ ProcessorEntry::Control::set_tooltip ()
                snprintf (tmp, sizeof(tmp), "%s: %.2f", _name.c_str(), c->internal_to_user (c->get_value ()));
        }
 
-       string sm = Glib::Markup::escape_text (tmp);
+       string sm = Gtkmm2ext::markup_escape_text (tmp);
        _slider_persistant_tooltip.set_tip (sm);
        ARDOUR_UI_UTILS::set_tooltip (_button, sm);
 }
@@ -617,14 +872,14 @@ ProcessorEntry::Control::slider_adjusted ()
        if (_ignore_ui_adjustment) {
                return;
        }
-       
+
        boost::shared_ptr<AutomationControl> c = _control.lock ();
 
        if (!c) {
                return;
        }
 
-       c->set_value ( c->interface_to_internal(_adjustment.get_value ()) );
+       c->set_value ( c->interface_to_internal(_adjustment.get_value ()) , Controllable::NoGroup);
        set_tooltip ();
 }
 
@@ -639,11 +894,19 @@ ProcessorEntry::Control::button_clicked ()
 
        bool const n = _button.get_active ();
 
-       c->set_value (n ? 0 : 1);
+       c->set_value (n ? 0 : 1, Controllable::NoGroup);
        _button.set_active (!n);
        set_tooltip ();
 }
 
+void
+ProcessorEntry::Control::button_clicked_event (GdkEventButton *ev)
+{
+       (void) ev;
+
+       button_clicked ();
+}
+
 void
 ProcessorEntry::Control::control_changed ()
 {
@@ -657,7 +920,7 @@ ProcessorEntry::Control::control_changed ()
        if (c->toggled ()) {
 
                _button.set_active (c->get_value() > 0.5);
-               
+
        } else {
                // as long as rapid timers are used, only update the tooltip
                // if the value has changed.
@@ -667,7 +930,7 @@ ProcessorEntry::Control::control_changed ()
                        set_tooltip ();
                }
        }
-       
+
        _ignore_ui_adjustment = false;
 }
 
@@ -685,7 +948,7 @@ ProcessorEntry::Control::set_state (XMLNode const * node)
 {
        XMLNode* n = GUIObjectState::get_node (node, state_id ());
        if (n) {
-               XMLProperty* p = n->property (X_("visible"));
+               XMLProperty const * p = n->property (X_("visible"));
                set_visible (p && string_is_affirmative (p->value ()));
        } else {
                set_visible (false);
@@ -700,7 +963,7 @@ ProcessorEntry::Control::set_visible (bool v)
        } else {
                box.hide ();
        }
-       
+
        _visible = v;
 }
 
@@ -729,94 +992,28 @@ PluginInsertProcessorEntry::PluginInsertProcessorEntry (ProcessorBox* b, boost::
        , _plugin_insert (p)
 {
        p->PluginIoReConfigure.connect (
-               _splitting_connection, invalidator (*this), boost::bind (&PluginInsertProcessorEntry::plugin_insert_splitting_changed, this), gui_context()
+               _iomap_connection, invalidator (*this), boost::bind (&PluginInsertProcessorEntry::iomap_changed, this), gui_context()
+               );
+       p->PluginMapChanged.connect (
+               _iomap_connection, invalidator (*this), boost::bind (&PluginInsertProcessorEntry::iomap_changed, this), gui_context()
+               );
+       p->PluginConfigChanged.connect (
+               _iomap_connection, invalidator (*this), boost::bind (&PluginInsertProcessorEntry::iomap_changed, this), gui_context()
                );
-
-       plugin_insert_splitting_changed ();
 }
 
 void
-PluginInsertProcessorEntry::plugin_insert_splitting_changed ()
+PluginInsertProcessorEntry::iomap_changed ()
 {
-       ChanCount in, out; // actual configured i/o
-       _plugin_insert->configured_io (in, out);
-
-       /* get number of input ports */
-       ChanCount sinks = _plugin_insert->natural_input_streams();
-       if (!_plugin_insert->splitting () && _plugin_insert->get_count() > 1) {
-               /* replicated instances */
-               for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
-                       sinks.set(*t, sinks.get(*t) * _plugin_insert->get_count());
-               }
-       }
-       /* MIDI bypass */
-       if (_plugin_insert->natural_output_streams().n_midi() == 0 &&
-                       _plugin_insert->output_streams().n_midi() == 1) {
-               in.set(DataType::MIDI, 1);
-               out.set(DataType::MIDI, 1);
-               sinks.set(DataType::MIDI, 1);
-       }
-
-       /* the Input streams available (*valid* outputs from prev. plugin)
-        * this will be <= sinks. Some input-ports of this processor
-        * may be unconnected.
-        */
-       _routing_icon.set_sources(in);
-
-       /* the actual input ports of this processor */
-       _input_icon.set_ports(sinks);
-       _routing_icon.set_sinks(sinks);
-
-       /* set/override plugin-output ports to actual outputs-streams.
-        *
-        * This plugin may have unconnected output-ports (currently only in Mixbus,
-        * e.g channelstrip-EQ at the top of a MIDI-channel before the synth).
-        *
-        * The *next* processor below this one will only see the 
-        * actual available streams (it cannot know the real outputs
-        * of this plugin).
-        *
-        * There is currently no API to query the ports of the previous (or next)
-        * processor.
-        *
-        * (normally - iff configuration succeeds - this is set during
-        * ProcessorEntry::processor_configuration_changed() and should
-        * equal _plugin_insert->output_streams())
-        */
-       _output_icon.set_ports(out);
-#ifndef NDEBUG
-       if (out != _plugin_insert->output_streams()) {
-               std::cerr << "Processor Wiring: " <<  processor()->name()
-                       << " out-ports: " << _plugin_insert->output_streams() // NB. does not include midi-bypass
-                       << " out-connections: " << out
-                       << endmsg;
-       }
-#endif
-
-       _routing_icon.set_splitting(_plugin_insert->splitting ());
-
-       if (_plugin_insert->splitting () ||  in != sinks)
-       {
-               _routing_icon.set_size_request (-1, std::max (7.f, rintf(7.f * UIConfiguration::instance().get_ui_scale())));
-               _routing_icon.set_visible(true);
-               _input_icon.show();
-       } else {
-               _routing_icon.set_visible(false);
-               if (_position_num != 0) {
-                       _input_icon.hide();
-               }
-       }
-
-       _input_icon.queue_draw();
-       _output_icon.queue_draw();
-       _routing_icon.queue_draw();
+       _parent->setup_routing_feeds ();
+       routing_icon.queue_draw();
+       output_routing_icon.queue_draw();
 }
 
 void
 PluginInsertProcessorEntry::hide_things ()
 {
        ProcessorEntry::hide_things ();
-       plugin_insert_splitting_changed ();
 }
 
 ProcessorEntry::PortIcon::PortIcon(bool input) {
@@ -844,45 +1041,224 @@ ProcessorEntry::PortIcon::on_expose_event (GdkEventExpose* ev)
        cairo_fill (cr);
 
        const double dx = rint(max(2., 2. * UIConfiguration::instance().get_ui_scale()));
-       if (_ports.n_total() > 1) {
-               for (uint32_t i = 0; i < _ports.n_total(); ++i) {
-                       if (i < _ports.n_midi()) {
-                               cairo_set_source_rgb (cr,
-                                               UINT_RGBA_R_FLT(midi_port_color),
-                                               UINT_RGBA_G_FLT(midi_port_color),
-                                               UINT_RGBA_B_FLT(midi_port_color));
-                       } else {
-                               cairo_set_source_rgb (cr,
-                                               UINT_RGBA_R_FLT(audio_port_color),
-                                               UINT_RGBA_G_FLT(audio_port_color),
-                                               UINT_RGBA_B_FLT(audio_port_color));
-                       }
-                       const float x = rintf(width * (.2f + .6f * i / (_ports.n_total() - 1.f)));
-                       cairo_rectangle (cr, x-dx * .5, 0, 1+dx, height);
-                       cairo_fill(cr);
-               }
-       } else if (_ports.n_total() == 1) {
-               if (_ports.n_midi() == 1) {
-                       cairo_set_source_rgb (cr,
-                                       UINT_RGBA_R_FLT(midi_port_color),
-                                       UINT_RGBA_G_FLT(midi_port_color),
-                                       UINT_RGBA_B_FLT(midi_port_color));
-               } else {
-                       cairo_set_source_rgb (cr,
-                                       UINT_RGBA_R_FLT(audio_port_color),
-                                       UINT_RGBA_G_FLT(audio_port_color),
-                                       UINT_RGBA_B_FLT(audio_port_color));
-               }
-               const float x = rintf(width * .5);
-               cairo_rectangle (cr, x-dx * .5, 0, 1+dx, height);
+       for (uint32_t i = 0; i < _ports.n_total(); ++i) {
+               set_routing_color (cr, i < _ports.n_midi());
+               const double x = ProcessorEntry::RoutingIcon::pin_x_pos (i, width, _ports.n_total(), 0 , false);
+               cairo_rectangle (cr, x - .5 - dx * .5, 0, 1 + dx, height);
                cairo_fill(cr);
-               cairo_stroke(cr);
        }
 
        cairo_destroy(cr);
        return true;
 }
 
+ProcessorEntry::RoutingIcon::RoutingIcon (bool input)
+       : _fed_by (false)
+       , _input (input)
+{
+       set_terminal (false);
+}
+
+void
+ProcessorEntry::RoutingIcon::set_terminal (bool b) {
+       _terminal = b;
+       int h = std::max (8.f, rintf(8.f * sqrt (UIConfiguration::instance().get_ui_scale())));
+       if (_terminal) {
+               h += std::max (4.f, rintf(4.f * sqrt (UIConfiguration::instance().get_ui_scale())));
+       }
+       set_size_request (-1, h);
+}
+
+void
+ProcessorEntry::RoutingIcon::set (
+               const ARDOUR::ChanCount& in,
+               const ARDOUR::ChanCount& out,
+               const ARDOUR::ChanCount& sinks,
+               const ARDOUR::ChanCount& sources,
+               const ARDOUR::ChanMapping& in_map,
+               const ARDOUR::ChanMapping& out_map,
+               const ARDOUR::ChanMapping& thru_map)
+{
+       _in       = in;
+       _out      = out;
+       _sources  = sources;
+       _sinks    = sinks;
+       _in_map   = in_map;
+       _out_map  = out_map;
+       _thru_map = thru_map;
+}
+
+bool
+ProcessorEntry::RoutingIcon::in_identity () const {
+       if (_thru_map.n_total () > 0) {
+               return false;
+       }
+       if (!_in_map.is_monotonic () || !_in_map.is_identity ()) {
+               return false;
+       }
+       if (_in_map.n_total () != _sinks.n_total () || _in.n_total () != _sinks.n_total ()) {
+               return false;
+       }
+       return true;
+}
+
+bool
+ProcessorEntry::RoutingIcon::out_identity () const {
+       if (_thru_map.n_total () > 0) {
+               // TODO skip if trhu is not connected to any of next's inputs
+               return false;
+       }
+       if (!_out_map.is_monotonic () || !_out_map.is_identity ()) {
+               return false;
+       }
+       if (_out_map.n_total () != _sources.n_total () || _out.n_total () != _sources.n_total ()) {
+               return false;
+       }
+       return true;
+}
+
+bool
+ProcessorEntry::RoutingIcon::can_coalesce () const {
+       if (_thru_map.n_total () > 0) {
+               return false;
+       }
+       if (_fed_by && _f_out != _f_sources) {
+               return false;
+       }
+       if (_fed_by && !_f_out_map.is_identity () && !_in_map.is_identity ()) {
+               return false;
+       }
+       if (_input && _sinks == _in && (!_fed_by || _f_out == _in)) {
+               return true;
+       }
+       return false;
+}
+
+void
+ProcessorEntry::RoutingIcon::set_fed_by (
+                               const ARDOUR::ChanCount& out,
+                               const ARDOUR::ChanCount& sources,
+                               const ARDOUR::ChanMapping& out_map,
+                               const ARDOUR::ChanMapping& thru_map)
+{
+       _f_out      = out;
+       _f_sources  = sources;
+       _f_out_map  = out_map;
+       _f_thru_map = thru_map;
+       _fed_by     = true;
+}
+
+void
+ProcessorEntry::RoutingIcon::set_feeding (
+                               const ARDOUR::ChanCount& in,
+                               const ARDOUR::ChanCount& sinks,
+                               const ARDOUR::ChanMapping& in_map,
+                               const ARDOUR::ChanMapping& thru_map)
+{
+       _i_in       = in;
+       _i_sinks    = sinks;
+       _i_in_map   = in_map;
+       _i_thru_map = thru_map;
+       _feeding    = true;
+}
+
+double
+ProcessorEntry::RoutingIcon::pin_x_pos (uint32_t i, double width, uint32_t n_total, uint32_t n_midi, bool midi)
+{
+       if (!midi) { i += n_midi; }
+       if (n_total == 1) {
+               assert (i == 0);
+               return rint (width * .5) +.5;
+       }
+       return rint (width * (.15 + .7 * i / (n_total - 1))) + .5;
+}
+
+void
+ProcessorEntry::RoutingIcon::draw_gnd (cairo_t* cr, double x0, double y0, double height, bool midi)
+{
+       const double dx = 1 + rint (max(2., 2. * UIConfiguration::instance().get_ui_scale()));
+       const double y1 = rint (height * .66) + .5;
+
+       cairo_save (cr);
+       cairo_translate (cr, x0, y0);
+       cairo_move_to (cr, 0, height);
+       cairo_line_to (cr, 0, y1);
+       cairo_move_to (cr, 0 - dx, y1);
+       cairo_line_to (cr, 0 + dx, y1);
+
+       set_routing_color (cr, midi);
+       cairo_set_line_width (cr, 1.0);
+       cairo_stroke (cr);
+       cairo_restore (cr);
+}
+
+void
+ProcessorEntry::RoutingIcon::draw_sidechain (cairo_t* cr, double x0, double y0, double height, bool midi)
+{
+       const double dx = 1 + rint (max(2., 2. * UIConfiguration::instance().get_ui_scale()));
+       const double y1 = rint (height * .5) - .5;
+
+       cairo_save (cr);
+       cairo_translate (cr, x0, y0);
+       cairo_move_to (cr, 0 - dx, height);
+       cairo_line_to (cr, 0, y1);
+       cairo_line_to (cr, 0 + dx, height);
+       cairo_close_path (cr);
+
+       set_routing_color (cr, midi);
+       cairo_fill (cr);
+       cairo_restore (cr);
+}
+
+void
+ProcessorEntry::RoutingIcon::draw_thru_src (cairo_t* cr, double x0, double y0, double height, bool midi)
+{
+       const double rad = 1;
+       const double y1 = height - rad - 1.5;
+
+       cairo_arc (cr, x0, y0 + y1, rad, 0, 2. * M_PI);
+       cairo_move_to (cr, x0, y0 + height - 1.5);
+       cairo_line_to (cr, x0, y0 + height);
+       set_routing_color (cr, midi);
+       cairo_set_line_width  (cr, 1.0);
+       cairo_stroke (cr);
+}
+
+void
+ProcessorEntry::RoutingIcon::draw_thru_sink (cairo_t* cr, double x0, double y0, double height, bool midi)
+{
+       const double rad = 1;
+       const double y1 = rad + 1;
+
+       cairo_arc (cr, x0, y0 + y1, rad, 0, 2. * M_PI);
+       cairo_move_to (cr, x0, y0);
+       cairo_line_to (cr, x0, y0 + 1);
+       set_routing_color (cr, midi);
+       cairo_set_line_width  (cr, 1.0);
+       cairo_stroke (cr);
+}
+
+void
+ProcessorEntry::RoutingIcon::draw_connection (cairo_t* cr, double x0, double x1, double y0, double y1, bool midi, bool dashed)
+{
+       double bz = abs (y1 - y0);
+
+       cairo_move_to (cr, x0, y0);
+       cairo_curve_to (cr, x0, y0 + bz, x1, y1 - bz, x1, y1);
+       cairo_set_line_width  (cr, 1.0);
+       cairo_set_line_cap  (cr,  CAIRO_LINE_CAP_ROUND);
+       cairo_set_source_rgb (cr, 1, 0, 0);
+       if (dashed) {
+               const double dashes[] = { 2, 3 };
+               cairo_set_dash (cr, dashes, 2, 0);
+       }
+       set_routing_color (cr, midi);
+       cairo_stroke (cr);
+       if (dashed) {
+               cairo_set_dash (cr, 0, 0, 0);
+       }
+}
+
 bool
 ProcessorEntry::RoutingIcon::on_expose_event (GdkEventExpose* ev)
 {
@@ -891,7 +1267,6 @@ ProcessorEntry::RoutingIcon::on_expose_event (GdkEventExpose* ev)
        cairo_rectangle (cr, ev->area.x, ev->area.y, ev->area.width, ev->area.height);
        cairo_clip (cr);
 
-       cairo_set_line_width (cr, max (1.f, UIConfiguration::instance().get_ui_scale()));
        cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
 
        Gtk::Allocation a = get_allocation();
@@ -904,107 +1279,485 @@ ProcessorEntry::RoutingIcon::on_expose_event (GdkEventExpose* ev)
        cairo_rectangle (cr, 0, 0, width, height);
        cairo_fill (cr);
 
-       Gdk::Color const fg = get_style()->get_fg (STATE_NORMAL);
-       cairo_set_source_rgb (cr, fg.get_red_p (), fg.get_green_p (), fg.get_blue_p ());
-
-       const uint32_t sources = _sources.n_total();
-       const uint32_t sinks = _sinks.n_total();
-
-       const uint32_t midi_sources = _sources.n_midi();
-       const uint32_t midi_sinks = _sinks.n_midi();
-       const uint32_t audio_sources = _sources.n_audio();
-       const uint32_t audio_sinks = _sinks.n_audio();
-
-       /* MIDI */
-       cairo_set_source_rgb (cr,
-                       UINT_RGBA_R_FLT(midi_port_color),
-                       UINT_RGBA_G_FLT(midi_port_color),
-                       UINT_RGBA_B_FLT(midi_port_color));
-       if (midi_sources > 0 && midi_sinks > 0 && sinks > 1 && sources > 1) {
-               for (uint32_t i = 0 ; i < midi_sources; ++i) {
-                       const float si_x  = rintf(width * (.2f + .6f * i  / (sinks - 1.f))) + .5f;
-                       const float si_x0 = rintf(width * (.2f + .6f * i / (sources - 1.f))) + .5f;
-                       cairo_move_to (cr, si_x, height);
-                       cairo_curve_to (cr, si_x, 0, si_x0, height, si_x0, 0);
-                       cairo_stroke (cr);
+       if (_input) {
+               if (can_coalesce ()) {
+                       expose_coalesced_input_map (cr, width, height);
+               } else {
+                       expose_input_map (cr, width, height);
+               }
+       } else {
+               expose_output_map (cr, width, height);
+       }
+
+       cairo_destroy(cr);
+       return true;
+}
+
+void
+ProcessorEntry::RoutingIcon::expose_coalesced_input_map (cairo_t* cr, const double width, const double height)
+{
+       const uint32_t pc_in = _sinks.n_total();
+       const uint32_t pc_in_midi = _sinks.n_midi();
+
+       for (uint32_t i = 0; i < pc_in; ++i) {
+               const bool is_midi = i < pc_in_midi;
+               bool valid_in;
+               uint32_t pn = is_midi ? i : i - pc_in_midi;
+               DataType dt = is_midi ? DataType::MIDI : DataType::AUDIO;
+               uint32_t idx = _in_map.get (dt, pn, &valid_in);
+               if (!valid_in) {
+                       double x = pin_x_pos (i, width, pc_in, 0, is_midi);
+                       draw_gnd (cr, x, 0, height, is_midi);
+                       continue;
+               }
+               if (idx >= _in.get (dt)) {
+                       // side-chain, probably
+                       double x = pin_x_pos (i, width, pc_in, 0, is_midi);
+                       draw_sidechain (cr, x, 0, height, is_midi);
+                       continue;
+               }
+               double c_x0;
+               double c_x1 = pin_x_pos (i, width, pc_in, 0, false);
+
+               if (_fed_by) {
+                       bool valid_src;
+                       uint32_t src = _f_out_map.get_src (dt, idx, &valid_src);
+                       if (!valid_src) {
+                               double x = pin_x_pos (i, width, pc_in, 0, false);
+                               bool valid_thru;
+                               _f_thru_map.get (dt, idx, &valid_thru);
+                               if (valid_thru) {
+                                       draw_thru_src (cr, x, 0, height, is_midi);
+                               } else {
+                                       draw_gnd (cr, x, 0, height, is_midi);
+                               }
+                               continue;
+                       }
+                       c_x0 = pin_x_pos (src, width, _f_sources.n_total(), _f_sources.n_midi(), is_midi);
+               } else {
+                       c_x0 = pin_x_pos (idx, width, _in.n_total(), _in.n_midi(), is_midi);
+               }
+               draw_connection (cr, c_x0, c_x1, 0, height, is_midi);
+       }
+}
+
+void
+ProcessorEntry::RoutingIcon::expose_input_map (cairo_t* cr, const double width, const double height)
+{
+       const uint32_t n_in = _in.n_total();
+       const uint32_t n_in_midi = _in.n_midi();
+       const uint32_t pc_in = _sinks.n_total();
+       const uint32_t pc_in_midi = _sinks.n_midi();
+
+       // draw inputs to this
+       for (uint32_t i = 0; i < pc_in; ++i) {
+               const bool is_midi = i < pc_in_midi;
+               bool valid_in;
+               uint32_t pn = is_midi ? i : i - pc_in_midi;
+               DataType dt = is_midi ? DataType::MIDI : DataType::AUDIO;
+               uint32_t idx = _in_map.get (dt, pn, &valid_in);
+               // check if it's fed
+               bool valid_src = true;
+               if (valid_in && idx < _in.get (dt) && _fed_by) {
+                       bool valid_out;
+                       bool valid_thru;
+                       _f_out_map.get_src (dt, idx, &valid_out);
+                       _f_thru_map.get (dt, idx, &valid_thru);
+                       if (!valid_out && !valid_thru) {
+                               valid_src = false;
+                       }
+               }
+               if (!valid_in || !valid_src) {
+                       double x = pin_x_pos (i, width, pc_in, 0, is_midi);
+                       draw_gnd (cr, x, 0, height, is_midi);
+                       continue;
+               }
+               if (idx >= _in.get (dt)) {
+                       // side-chain, probably
+                       double x = pin_x_pos (i, width, pc_in, 0, is_midi);
+                       draw_sidechain (cr, x, 0, height, is_midi);
+                       continue;
+               }
+               double c_x1 = pin_x_pos (i, width, pc_in, 0, false);
+               double c_x0 = pin_x_pos (idx, width, n_in, n_in_midi, is_midi);
+               draw_connection (cr, c_x0, c_x1, 0, height, is_midi);
+       }
+
+       // draw reverse thru
+       for (uint32_t i = 0; i < n_in; ++i) {
+               const bool is_midi = i < n_in_midi;
+               bool valid_thru;
+               uint32_t pn = is_midi ? i : i - n_in_midi;
+               DataType dt = is_midi ? DataType::MIDI : DataType::AUDIO;
+               _thru_map.get_src (dt, pn, &valid_thru);
+               if (!valid_thru) {
+                       continue;
+               }
+               double x = pin_x_pos (i, width, n_in, 0, is_midi);
+               draw_thru_sink (cr, x, 0, height, is_midi);
+       }
+}
+
+void
+ProcessorEntry::RoutingIcon::expose_output_map (cairo_t* cr, const double width, const double height)
+{
+       int dh = std::max (4.f, rintf(4.f * UIConfiguration::instance().get_ui_scale()));
+       double ht = _terminal ? height - dh : height;
+
+       // draw outputs of this
+       const uint32_t pc_out = _sources.n_total();
+       const uint32_t pc_out_midi = _sources.n_midi();
+       const uint32_t n_out = _out.n_total();
+       const uint32_t n_out_midi = _out.n_midi();
+
+       for (uint32_t i = 0; i < pc_out; ++i) {
+               const bool is_midi = i < pc_out_midi;
+               bool valid_out;
+               uint32_t pn = is_midi ? i : i - pc_out_midi;
+               DataType dt = is_midi ? DataType::MIDI : DataType::AUDIO;
+               uint32_t idx = _out_map.get (dt, pn, &valid_out);
+               if (!valid_out) {
+                       continue;
+               }
+               // skip connections that are not used in the next's input
+               if (_feeding) {
+                       bool valid_thru, valid_sink;
+                       _i_in_map.get_src (dt, idx, &valid_sink);
+                       _i_thru_map.get_src (dt, idx, &valid_thru);
+                       if (!valid_thru && !valid_sink) {
+                               if (!is_midi || i != 0) { // special case midi-bypass
+                                       continue;
+                               }
+                       }
+               }
+               double c_x0 = pin_x_pos (i, width, pc_out, 0, false);
+               double c_x1 = pin_x_pos (idx, width, n_out, n_out_midi, is_midi);
+               draw_connection (cr, c_x0, c_x1, 0, ht, is_midi);
+       }
+
+       for (uint32_t i = 0; i < n_out; ++i) {
+               const bool is_midi = i < n_out_midi;
+               uint32_t pn = is_midi ? i : i - n_out_midi;
+               DataType dt = is_midi ? DataType::MIDI : DataType::AUDIO;
+               double x = pin_x_pos (i, width, n_out, 0, is_midi);
+
+               if (!_terminal) {
+                       bool valid_thru_f = false;
+                       // skip connections that are not used in the next's input
+                       if (_feeding) {
+                               bool valid_sink;
+                               _i_in_map.get_src (dt, pn, &valid_sink);
+                               _i_thru_map.get_src (dt, pn, &valid_thru_f);
+                               if (!valid_thru_f && !valid_sink) {
+                                       if (!is_midi || i != 0) { // special case midi-bypass
+                                               continue;
+                                       }
+                               }
+                       }
+
+                       bool valid_src;
+                       _out_map.get_src (dt, pn, &valid_src);
+                       if (!valid_src) {
+                               bool valid_thru;
+                               uint32_t idx = _thru_map.get (dt, pn, &valid_thru);
+                               if (valid_thru) {
+                                       if (idx >= _in.get (dt)) {
+                                               draw_sidechain (cr, x, 0, height, is_midi);
+                                       } else {
+                                               draw_thru_src (cr, x, 0, height, is_midi);
+                                       }
+                               } else if (valid_thru_f){
+                                       // gnd is part of input, unless it's a thru input
+                                       // (also only true if !coalesced into one small display)
+                                       draw_gnd (cr, x, 0, height, is_midi);
+                               }
+                       }
+               } else {
+                       // terminal node, add arrows
+                       bool valid_src;
+                       _out_map.get_src (dt, pn, &valid_src);
+                       if (!valid_src) {
+                               bool valid_thru;
+                               uint32_t idx = _thru_map.get (dt, pn, &valid_thru);
+                               if (valid_thru) {
+                                       if (idx >= _in.get (dt)) {
+                                               draw_sidechain (cr, x, 0, height - dh, is_midi);
+                                       } else {
+                                               draw_thru_src (cr, x, 0, height - dh, is_midi);
+                                       }
+                               } else {
+                                       draw_gnd (cr, x, 0, height - dh, is_midi);
+                               }
+                       }
+
+                       set_routing_color (cr, is_midi);
+                       cairo_set_line_width (cr, 1.0);
+                       cairo_move_to (cr, x, height - dh);
+                       cairo_line_to (cr, x, height - 2);
+                       cairo_stroke (cr);
+
+                       const double ar = dh - 1;
+                       cairo_move_to (cr, x - ar, height - ar);
+                       cairo_line_to (cr, x     , height - .5);
+                       cairo_line_to (cr, x + ar, height - ar);
+                       cairo_line_to (cr, x     , height - ar * .5);
+                       cairo_close_path (cr);
+                       cairo_fill_preserve (cr);
+                       cairo_stroke (cr);
+               }
+       }
+}
+
+ProcessorEntry::PluginDisplay::PluginDisplay (ProcessorEntry& e, boost::shared_ptr<ARDOUR::Plugin> p, uint32_t max_height)
+       : _entry (e)
+       , _plug (p)
+       , _surf (0)
+       , _max_height (max_height)
+       , _cur_height (1)
+       , _scroll (false)
+{
+       set_name ("processor prefader");
+       add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
+       _plug->QueueDraw.connect (_qdraw_connection, invalidator (*this),
+                       boost::bind (&Gtk::Widget::queue_draw, this), gui_context ());
+
+       std::string postfix = "";
+       if (_plug->has_editor()) {
+               ARDOUR_UI_UTILS::set_tooltip (*this,
+                               string_compose (_("<b>%1</b>\nDouble-click to show GUI.\n%2+double-click to show generic GUI.%3"), e.name (Wide), Keyboard::primary_modifier_name (), postfix));
+       } else {
+               ARDOUR_UI_UTILS::set_tooltip (*this,
+                               string_compose (_("<b>%1</b>\nDouble-click to show generic GUI.%2"), e.name (Wide), postfix));
+       }
+}
+
+ProcessorEntry::PluginDisplay::~PluginDisplay ()
+{
+       if (_surf) {
+               cairo_surface_destroy (_surf);
+       }
+}
+
+bool
+ProcessorEntry::PluginDisplay::on_button_press_event (GdkEventButton *ev)
+{
+       assert (_entry.processor ());
+
+       // consider some tweaks to pass this up to the DnDVBox somehow:
+       // select processor, then call (private)
+       //_entry._parent->processor_button_press_event (ev, &_entry);
+       if (Keyboard::is_edit_event (ev) || (ev->button == 1 && ev->type == GDK_2BUTTON_PRESS)) {
+               if (Keyboard::modifier_state_equals (ev->state, Keyboard::SecondaryModifier)) {
+                       _entry._parent->generic_edit_processor (_entry.processor ());
+               } else {
+                       _entry._parent->edit_processor (_entry.processor ());
+               }
+               return true;
+       }
+       return false;
+}
+
+bool
+ProcessorEntry::PluginDisplay::on_button_release_event (GdkEventButton *ev)
+{
+       return false;
+}
+
+void
+ProcessorEntry::PluginDisplay::on_size_request (Requisition* req)
+{
+       req->width = 56;
+       req->height = _cur_height;
+}
+
+
+void
+ProcessorEntry::PluginDisplay::update_height_alloc (uint32_t inline_height)
+{
+       /* work-around scroll-bar + aspect ratio
+        * show inline-view -> height changes -> scrollbar gets added
+        * -> width changes -> inline-view, fixed aspect ratio -> height changes
+        * -> scroll bar is removed [-> width changes ; repeat ]
+        */
+       uint32_t shm = std::min (_max_height, inline_height);
+       bool sc = false;
+       Gtk::Container* pr = get_parent();
+       for (uint32_t i = 0; i < 4 && pr; ++i) {
+               // VBox, EventBox, ViewPort, ScrolledWindow
+               pr = pr->get_parent();
+       }
+       Gtk::ScrolledWindow* sw = dynamic_cast<Gtk::ScrolledWindow*> (pr);
+       if (sw) {
+               const Gtk::VScrollbar* vsb = sw->get_vscrollbar();
+               sc = vsb && vsb->is_visible();
+       }
+
+       if (shm != _cur_height) {
+               if (_scroll == sc || _cur_height < shm) {
+                       queue_resize ();
+               }
+               _cur_height = shm;
+       }
+       _scroll = sc;
+}
+
+uint32_t
+ProcessorEntry::PluginDisplay::render_inline (cairo_t* cr, uint32_t width)
+{
+       Plugin::Display_Image_Surface* dis = _plug->render_inline_display (width, _max_height);
+       if (!dis) {
+               return 0;
+       }
+
+       /* allocate a local image-surface,
+        * We cannot re-use the data via cairo_image_surface_create_for_data(),
+        * since pixman keeps a reference to it.
+        * we'd need to hand over the data and ha cairo_surface_destroy to free it.
+        * it might be possible to work around via cairo_surface_set_user_data().
+        */
+       if (!_surf
+                       || dis->width !=  cairo_image_surface_get_width (_surf)
+                       || dis->height !=  cairo_image_surface_get_height (_surf)
+                ) {
+               if (_surf) {
+                       cairo_surface_destroy (_surf);
+               }
+               _surf = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, dis->width, dis->height);
+       }
+
+       if (cairo_image_surface_get_stride (_surf) == dis->stride) {
+               memcpy (cairo_image_surface_get_data (_surf), dis->data, dis->stride * dis->height);
+       } else {
+               unsigned char *src = dis->data;
+               unsigned char *dst = cairo_image_surface_get_data (_surf);
+               const int dst_stride =  cairo_image_surface_get_stride (_surf);
+               for (int y = 0; y < dis->height; ++y) {
+                       memcpy (dst, src, dis->width * 4 /*ARGB32*/);
+                       src += dis->stride;
+                       dst += dst_stride;
+               }
+       }
+
+       cairo_surface_flush(_surf);
+       cairo_surface_mark_dirty(_surf);
+       const double xc = floor ((width - dis->width) * .5);
+       cairo_set_source_surface(cr, _surf, xc, 0);
+       cairo_paint (cr);
+
+       return dis->height;
+}
+
+bool
+ProcessorEntry::PluginDisplay::on_expose_event (GdkEventExpose* ev)
+{
+       Gtk::Allocation a = get_allocation();
+       double const width = a.get_width();
+       double const height = a.get_height();
+
+       cairo_t* cr = gdk_cairo_create (get_window()->gobj());
+       cairo_rectangle (cr, ev->area.x, ev->area.y, ev->area.width, ev->area.height);
+       cairo_clip (cr);
+
+       Gdk::Color const bg = get_style()->get_bg (STATE_NORMAL);
+       cairo_set_source_rgb (cr, bg.get_red_p (), bg.get_green_p (), bg.get_blue_p ());
+       cairo_rectangle (cr, 0, 0, width, height);
+       cairo_fill (cr);
+
+       cairo_save (cr);
+       cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
+       Gtkmm2ext::rounded_rectangle (cr, .5, -1.5, width - 1, height + 1, 7);
+       cairo_clip (cr);
+       cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
+
+       uint32_t ht = render_inline (cr, width);
+       cairo_restore (cr);
+
+       if (ht == 0) {
+               hide ();
+               if (_cur_height != 1) {
+                       _cur_height = 1;
+                       queue_resize ();
+               }
+               cairo_destroy (cr);
+               return true;
+       } else {
+               update_height_alloc (ht);
+       }
+
+       bool failed = false;
+       std::string name = get_name();
+       ArdourCanvas::Color fill_color = UIConfiguration::instance().color (string_compose ("%1: fill active", name), &failed);
+
+       Gtkmm2ext::rounded_rectangle (cr, .5, -1.5, width - 1, height + 1, 7);
+       cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
+       cairo_set_line_width(cr, 1.0);
+       ArdourCanvas::set_source_rgb_a (cr, fill_color, 1.0);
+       cairo_stroke (cr);
+
+       cairo_destroy(cr);
+       return true;
+}
+
+ProcessorEntry::LuaPluginDisplay::LuaPluginDisplay (ProcessorEntry& e, boost::shared_ptr<ARDOUR::LuaProc> p, uint32_t max_height)
+       : PluginDisplay (e, p, max_height)
+       , _luaproc (p)
+       , _lua_render_inline (0)
+{
+       p->setup_lua_inline_gui (&lua_gui);
+
+       lua_State* LG = lua_gui.getState ();
+       LuaInstance::bind_cairo (LG);
+       luabridge::LuaRef lua_render = luabridge::getGlobal (LG, "render_inline");
+       assert (lua_render.isFunction ());
+       _lua_render_inline = new luabridge::LuaRef (lua_render);
+}
+
+ProcessorEntry::LuaPluginDisplay::~LuaPluginDisplay ()
+{
+       delete (_lua_render_inline);
+}
+
+uint32_t
+ProcessorEntry::LuaPluginDisplay::render_inline (cairo_t *cr, uint32_t width)
+{
+       Cairo::Context ctx (cr);
+       try {
+               luabridge::LuaRef rv = (*_lua_render_inline)((Cairo::Context *)&ctx, width, _max_height);
+               if (rv.isTable ()) {
+                       uint32_t h = rv[2];
+                       return h;
                }
-       } else if (midi_sources == 1 && midi_sinks == 1 && sinks == 1 && sources == 1) {
-               const float si_x = rintf(width * .5f) + .5f;
-               cairo_move_to (cr, si_x, height);
-               cairo_line_to (cr, si_x, 0);
-               cairo_stroke (cr);
-       } else if (midi_sources == 1 && midi_sinks == 1) {
-               /* unusual cases -- removed synth, midi-track w/audio plugins */
-               const float si_x  = rintf(width * (sinks   > 1 ? .2f : .5f)) + .5f;
-               const float si_x0 = rintf(width * (sources > 1 ? .2f : .5f)) + .5f;
-               cairo_move_to (cr, si_x, height);
-               cairo_curve_to (cr, si_x, 0, si_x0, height, si_x0, 0);
-               cairo_stroke (cr);
-       } else if (midi_sources == 0 && midi_sinks == 1) {
-               const double dx = 1 + rint(max(2., 2. * UIConfiguration::instance().get_ui_scale()));
-               // draw "T"
-               //  TODO connect back to track-input of last midi-out if any, otherwise draw "X"
-               const float si_x  = rintf(width * .2f) + .5f;
-               cairo_move_to (cr, si_x, height);
-               cairo_line_to (cr, si_x, height * .66);
-               cairo_move_to (cr, si_x - dx, height * .66);
-               cairo_line_to (cr, si_x + dx, height * .66);
-               cairo_stroke (cr);
+       } catch (luabridge::LuaException const& e) {
 #ifndef NDEBUG
-       } else if (midi_sources != 0 && midi_sinks != 0) {
-               PBD::warning << string_compose("Programming error: midi routing display: A %1 -> %2 | M %3 -> %4 | T %5 -> %6", 
-                               audio_sources, audio_sinks, midi_sources, midi_sinks, sources, sinks) << endmsg;
+               cerr << "LuaException:" << e.what () << endl;
 #endif
        }
+       return 0;
+}
 
-       /* AUDIO */
-       cairo_set_source_rgb (cr,
-                       UINT_RGBA_R_FLT(audio_port_color),
-                       UINT_RGBA_G_FLT(audio_port_color),
-                       UINT_RGBA_B_FLT(audio_port_color));
-
-       if (_splitting) {
-               assert(audio_sources < 2);
-               assert(audio_sinks > 1);
-               /* assume there is only ever one MIDI port */
-               const float si_x0 = rintf(width * (midi_sources > 0 ? .8f : .5f)) + .5f;
-               for (uint32_t i = midi_sinks; i < sinks; ++i) {
-                       const float si_x = rintf(width * (.2f + .6f * i / (sinks - 1.f))) + .5f;
-                       cairo_move_to (cr, si_x, height);
-                       cairo_curve_to (cr, si_x, 0, si_x0, height, si_x0, 0);
-                       cairo_stroke (cr);
-               }
-       } else if (audio_sources > 1 && sinks > 1) {
-               for (uint32_t i = 0 ; i < audio_sources; ++i) {
-                       const float si_x = rintf(width * (.2f + .6f * (i + midi_sinks) / (sinks - 1.f))) + .5f;
-                       const float si_x0 = rintf(width * (.2f + .6f * (i + midi_sources) / (sources - 1.f))) + .5f;
-                       cairo_move_to (cr, si_x, height);
-                       cairo_curve_to (cr, si_x, 0, si_x0, height, si_x0, 0);
-                       cairo_stroke (cr);
-               }
-       } else if (audio_sources == 1 && audio_sinks > 0) {
-               float si_x, si_x0;
-               if (sinks == 1) {
-                       si_x = rintf(width * .5f) + .5f;
-               } else {
-                       si_x = rintf(width * (.2f + .6f * midi_sinks / (sinks - 1.f))) + .5f;
-               }
-               if (sources == 1) {
-                       si_x0 = rintf(width * .5f) + .5f;
-               } else {
-                       si_x0 = rintf(width * (.2f + .6f * midi_sources / (sources - 1.f))) + .5f;
-               }
-               cairo_move_to (cr, si_x, height);
-               cairo_curve_to (cr, si_x, 0, si_x0, height, si_x0, 0);
-               cairo_stroke (cr);
-#ifndef NDEBUG
-       } else if (audio_sources != 0 && audio_sinks != 0) {
-               PBD::warning << string_compose("Programming error: audio routing display: A %1 -> %2 | M %3 -> %4 | T %5 -> %6", 
-                               audio_sources, audio_sinks, midi_sources, midi_sinks, sources, sinks) << endmsg;
-#endif
-       }
-       cairo_destroy(cr);
-       return true;
+
+static std::list<Gtk::TargetEntry> drop_targets()
+{
+       std::list<Gtk::TargetEntry> tmp;
+       tmp.push_back (Gtk::TargetEntry ("processor")); // from processor-box to processor-box
+       tmp.push_back (Gtk::TargetEntry ("PluginInfoPtr")); // from plugin-manager
+       tmp.push_back (Gtk::TargetEntry ("PluginFavoritePtr")); // from sidebar
+       return tmp;
+}
+
+static std::list<Gtk::TargetEntry> drag_targets()
+{
+       std::list<Gtk::TargetEntry> tmp;
+       tmp.push_back (Gtk::TargetEntry ("PluginPresetPtr")); // to sidebar (optional preset)
+       tmp.push_back (Gtk::TargetEntry ("processor")); // to processor-box (copy)
+       return tmp;
+}
+
+static std::list<Gtk::TargetEntry> drag_targets_noplugin()
+{
+       std::list<Gtk::TargetEntry> tmp;
+       tmp.push_back (Gtk::TargetEntry ("processor")); // to processor box (sends, faders re-order)
+       return tmp;
 }
 
 ProcessorBox::ProcessorBox (ARDOUR::Session* sess, boost::function<PluginSelector*()> get_plugin_selector,
@@ -1016,11 +1769,18 @@ ProcessorBox::ProcessorBox (ARDOUR::Session* sess, boost::function<PluginSelecto
        , _placement (-1)
        , _visible_prefader_processors (0)
        , _rr_selection(rsel)
+       , processor_display (drop_targets())
        , _redisplay_pending (false)
-
 {
        set_session (sess);
 
+       /* ProcessorBox actions and bindings created statically by call to
+        * ProcessorBox::register_actions(), made by ARDOUR_UI so that actions
+        * are available for context menus.
+        */
+
+       processor_display.set_data ("ardour-bindings", bindings);
+
        _width = Wide;
        processor_menu = 0;
        no_processor_redisplay = false;
@@ -1043,6 +1803,7 @@ ProcessorBox::ProcessorBox (ARDOUR::Session* sess, boost::function<PluginSelecto
 
        processor_display.Reordered.connect (sigc::mem_fun (*this, &ProcessorBox::reordered));
        processor_display.DropFromAnotherBox.connect (sigc::mem_fun (*this, &ProcessorBox::object_drop));
+       processor_display.DropFromExternal.connect (sigc::mem_fun (*this, &ProcessorBox::plugin_drop));
 
        processor_scroller.show ();
        processor_display.show ();
@@ -1105,16 +1866,16 @@ ProcessorBox::route_going_away ()
        _route.reset ();
 }
 
-void
-ProcessorBox::object_drop(DnDVBox<ProcessorEntry>* source, ProcessorEntry* position, Glib::RefPtr<Gdk::DragContext> const & context)
+boost::shared_ptr<Processor>
+ProcessorBox::find_drop_position (ProcessorEntry* position)
 {
        boost::shared_ptr<Processor> p;
        if (position) {
                p = position->processor ();
                if (!p) {
                        /* dropped on the blank entry (which will be before the
-                          fader), so use the first non-blank child as our
-                          `dropped on' processor */
+                                fader), so use the first non-blank child as our
+                                `dropped on' processor */
                        list<ProcessorEntry*> c = processor_display.children ();
                        list<ProcessorEntry*>::iterator i = c.begin ();
 
@@ -1123,6 +1884,119 @@ ProcessorBox::object_drop(DnDVBox<ProcessorEntry>* source, ProcessorEntry* posit
                        assert (p);
                }
        }
+       return p;
+}
+
+void
+ProcessorBox::_drop_plugin_preset (Gtk::SelectionData const &data, Route::ProcessorList &pl)
+{
+               const void * d = data.get_data();
+               const Gtkmm2ext::DnDTreeView<ARDOUR::PluginPresetPtr>* tv = reinterpret_cast<const Gtkmm2ext::DnDTreeView<ARDOUR::PluginPresetPtr>*>(d);
+
+               PluginPresetList nfos;
+               TreeView* source;
+               tv->get_object_drag_data (nfos, &source);
+
+               for (list<PluginPresetPtr>::const_iterator i = nfos.begin(); i != nfos.end(); ++i) {
+                       PluginPresetPtr ppp = (*i);
+                       PluginInfoPtr pip = ppp->_pip;
+                       PluginPtr p = pip->load (*_session);
+                       if (!p) {
+                               continue;
+                       }
+
+                       if (ppp->_preset.valid) {
+                               p->load_preset (ppp->_preset);
+                       }
+
+                       boost::shared_ptr<Processor> processor (new PluginInsert (*_session, p));
+                       if (Config->get_new_plugins_active ()) {
+                               processor->enable (true);
+                       }
+                       pl.push_back (processor);
+               }
+}
+
+void
+ProcessorBox::_drop_plugin (Gtk::SelectionData const &data, Route::ProcessorList &pl)
+{
+               const void * d = data.get_data();
+               const Gtkmm2ext::DnDTreeView<ARDOUR::PluginInfoPtr>* tv = reinterpret_cast<const Gtkmm2ext::DnDTreeView<ARDOUR::PluginInfoPtr>*>(d);
+               PluginInfoList nfos;
+
+               TreeView* source;
+               tv->get_object_drag_data (nfos, &source);
+
+               for (list<PluginInfoPtr>::const_iterator i = nfos.begin(); i != nfos.end(); ++i) {
+                       PluginPtr p = (*i)->load (*_session);
+                       if (!p) {
+                               continue;
+                       }
+                       boost::shared_ptr<Processor> processor (new PluginInsert (*_session, p));
+                       if (Config->get_new_plugins_active ()) {
+                               processor->enable (true);
+                       }
+                       pl.push_back (processor);
+               }
+}
+
+void
+ProcessorBox::plugin_drop (Gtk::SelectionData const &data, ProcessorEntry* position, Glib::RefPtr<Gdk::DragContext> const & context)
+{
+       if (!_session) {
+               return;
+       }
+
+       boost::shared_ptr<Processor> p = find_drop_position (position);
+       Route::ProcessorList pl;
+
+       if (data.get_target() == "PluginInfoPtr") {
+               _drop_plugin (data, pl);
+       }
+       else if (data.get_target() == "PluginFavoritePtr") {
+               _drop_plugin_preset (data, pl);
+       }
+       else {
+               return;
+       }
+
+       Route::ProcessorStreams err;
+       if (_route->add_processors (pl, p, &err)) {
+               string msg = _(
+                               "Processor Drag/Drop failed. Probably because\n\
+the I/O configuration of the plugins could\n\
+not match the configuration of this track.");
+               MessageDialog am (msg);
+               am.run ();
+       }
+}
+
+void
+ProcessorBox::object_drop (DnDVBox<ProcessorEntry>* source, ProcessorEntry* position, Glib::RefPtr<Gdk::DragContext> const & context)
+{
+       if (Gdk::ACTION_LINK == context->get_selected_action()) {
+               list<ProcessorEntry*> children = source->selection ();
+               assert (children.size() == 1);
+               ProcessorEntry* other = *children.begin();
+               assert (other->can_copy_state (position));
+               boost::shared_ptr<ARDOUR::Processor> otherproc = other->processor();
+               boost::shared_ptr<ARDOUR::Processor> proc = position->processor();
+               boost::shared_ptr<PluginInsert> pi = boost::dynamic_pointer_cast<PluginInsert> (proc);
+               assert (otherproc && proc && pi);
+
+               PBD::ID id = pi->id();
+               XMLNode& state = otherproc->get_state ();
+               /* strip side-chain state (processor inside processor must be a side-chain)
+                * otherwise we'll end up with duplicate ports-names.
+                * (this needs a better solution which retains connections)
+                */
+               state.remove_nodes ("Processor");
+               proc->set_state (state, Stateful::loading_state_version);
+               boost::dynamic_pointer_cast<PluginInsert>(proc)->update_id (id);
+               return;
+       }
+
+       boost::shared_ptr<Processor> p = find_drop_position (position);
 
        list<ProcessorEntry*> children = source->selection ();
        list<boost::shared_ptr<Processor> > procs;
@@ -1182,6 +2056,10 @@ ProcessorBox::build_possible_aux_menu ()
                return 0;
        }
 
+       if (_route->is_monitor ()) {
+               return 0;
+       }
+
        using namespace Menu_Helpers;
        Menu* menu = manage (new Menu);
        MenuList& items = menu->items();
@@ -1227,6 +2105,9 @@ ProcessorBox::show_processor_menu (int arg)
                }
        }
 
+       ActionManager::get_action (X_("ProcessorMenu"), "newinsert")->set_sensitive (!_route->is_monitor ());
+       ActionManager::get_action (X_("ProcessorMenu"), "newsend")->set_sensitive (!_route->is_monitor ());
+
        ProcessorEntry* single_selection = 0;
        if (processor_display.selection().size() == 1) {
                single_selection = processor_display.selection().front();
@@ -1251,19 +2132,22 @@ ProcessorBox::show_processor_menu (int arg)
                }
        }
 
-       Gtk::MenuItem* send_menu_item = dynamic_cast<Gtk::MenuItem*>(ActionManager::get_widget("/ProcessorMenu/send_options"));
-       if (send_menu_item) {
-               if (single_selection) {
-                       Menu* m = single_selection->build_send_options_menu ();
-                       if (m && !m->items().empty()) {
-                               send_menu_item->set_submenu (*m);
-                               send_menu_item->set_sensitive (true);
+
+       if (!ARDOUR::Profile->get_mixbus()) {
+               Gtk::MenuItem* send_menu_item = dynamic_cast<Gtk::MenuItem*>(ActionManager::get_widget("/ProcessorMenu/send_options"));
+               if (send_menu_item) {
+                       if (single_selection && !_route->is_monitor()) {
+                               Menu* m = single_selection->build_send_options_menu ();
+                               if (m && !m->items().empty()) {
+                                       send_menu_item->set_submenu (*m);
+                                       send_menu_item->set_sensitive (true);
+                               } else {
+                                       gtk_menu_item_set_submenu (send_menu_item->gobj(), 0);
+                                       send_menu_item->set_sensitive (false);
+                               }
                        } else {
-                               gtk_menu_item_set_submenu (send_menu_item->gobj(), 0);
                                send_menu_item->set_sensitive (false);
                        }
-               } else {
-                       send_menu_item->set_sensitive (false);
                }
        }
 
@@ -1276,6 +2160,7 @@ ProcessorBox::show_processor_menu (int arg)
        cut_action->set_sensitive (sensitive && can_cut ());
        copy_action->set_sensitive (sensitive);
        delete_action->set_sensitive (sensitive || stub_processor_selected ());
+       backspace_action->set_sensitive (sensitive || stub_processor_selected ());
 
        edit_action->set_sensitive (one_processor_can_be_edited ());
        edit_generic_action->set_sensitive (one_processor_can_be_edited ());
@@ -1285,6 +2170,8 @@ ProcessorBox::show_processor_menu (int arg)
                pi = boost::dynamic_pointer_cast<PluginInsert> (single_selection->processor ());
        }
 
+       manage_pins_action->set_sensitive (pi != 0);
+
        /* allow editing with an Ardour-generated UI for plugin inserts with editors */
        edit_action->set_sensitive (pi && pi->plugin()->has_editor ());
 
@@ -1311,18 +2198,30 @@ ProcessorBox::show_processor_menu (int arg)
 bool
 ProcessorBox::enter_notify (GdkEventCrossing*)
 {
+       processor_display.grab_focus ();
        _current_processor_box = this;
        return false;
 }
 
 bool
-ProcessorBox::leave_notify (GdkEventCrossing*)
+ProcessorBox::leave_notify (GdkEventCrossing* ev)
 {
+       if (ev->detail == GDK_NOTIFY_INFERIOR) {
+               return false;
+       }
+
+       Widget* top = get_toplevel();
+
+       if (top->is_toplevel()) {
+               Window* win = dynamic_cast<Window*> (top);
+               gtk_window_set_focus (win->gobj(), 0);
+       }
+
        return false;
 }
 
 bool
-ProcessorBox::processor_operation (ProcessorOperation op) 
+ProcessorBox::processor_operation (ProcessorOperation op)
 {
        ProcSelection targets;
 
@@ -1341,9 +2240,10 @@ ProcessorBox::processor_operation (ProcessorOperation op)
        }
 */
 
-       if ( (op == ProcessorsDelete) && targets.empty() )
+       if ((op == ProcessorsDelete) && targets.empty()) {
                return false;  //nothing to delete.  return false so the editor-mixer, because the user was probably intending to delete something in the editor
-       
+       }
+
        switch (op) {
        case ProcessorsSelectAll:
                processor_display.select_all ();
@@ -1383,11 +2283,7 @@ ProcessorBox::processor_operation (ProcessorOperation op)
 
        case ProcessorsToggleActive:
                for (ProcSelection::iterator i = targets.begin(); i != targets.end(); ++i) {
-                       if ((*i)->active()) {
-                               (*i)->deactivate ();
-                       } else {
-                               (*i)->activate ();
-                       }
+                       (*i)->enable (!(*i)->enabled ());
                }
                break;
 
@@ -1398,11 +2294,11 @@ ProcessorBox::processor_operation (ProcessorOperation op)
        default:
                break;
        }
-       
+
        return true;
 }
 
-ProcessorWindowProxy* 
+ProcessorWindowProxy*
 ProcessorBox::find_window_proxy (boost::shared_ptr<Processor> processor) const
 {
        return  processor->window_proxy();
@@ -1441,7 +2337,7 @@ ProcessorBox::processor_button_press_event (GdkEventButton *ev, ProcessorEntry*
        } else if (Keyboard::is_context_menu_event (ev)) {
 
                show_processor_menu (ev->time);
-               
+
                ret = true;
 
        } else if (processor && ev->button == 1 && selected) {
@@ -1473,18 +2369,13 @@ ProcessorBox::processor_button_release_event (GdkEventButton *ev, ProcessorEntry
                                boost::weak_ptr<Processor>(processor)));
 
        } else if (processor && Keyboard::is_button2_event (ev)
-#ifndef GTKOSX
+#ifndef __APPLE__
                   && (Keyboard::no_modifier_keys_pressed (ev) && ((ev->state & Gdk::BUTTON2_MASK) == Gdk::BUTTON2_MASK))
 #endif
                ) {
 
                /* button2-click with no/appropriate modifiers */
-
-               if (processor->active()) {
-                       processor->deactivate ();
-               } else {
-                       processor->activate ();
-               }
+               processor->enable (!processor->enabled ());
        }
 
        return false;
@@ -1530,10 +2421,15 @@ ProcessorBox::use_plugins (const SelectedPlugins& plugins)
                        weird_plugin_dialog (**p, err_streams);
                        return true;
                        // XXX SHAREDPTR delete plugin here .. do we even need to care?
-               } else {
-
-                       if (Profile->get_sae()) {
-                               processor->activate ();
+               } else if (plugins.size() == 1 && UIConfiguration::instance().get_open_gui_after_adding_plugin()) {
+                       if (boost::dynamic_pointer_cast<PluginInsert>(processor)->plugin()->has_inline_display() && UIConfiguration::instance().get_prefer_inline_over_gui()) {
+                               ;
+                       } else if (_session->engine().connected () && processor_can_be_edited (processor)) {
+                               if ((*p)->has_editor ()) {
+                                       edit_processor (processor);
+                               } else {
+                                       generic_edit_processor (processor);
+                               }
                        }
                }
        }
@@ -1597,11 +2493,10 @@ ProcessorBox::choose_insert ()
 void
 ProcessorBox::choose_send ()
 {
-       boost::shared_ptr<Pannable> sendpan(new Pannable (*_session));
-       boost::shared_ptr<Send> send (new Send (*_session, sendpan, _route->mute_master()));
+       boost::shared_ptr<Send> send (new Send (*_session, _route->pannable (), _route->mute_master()));
 
        /* make an educated guess at the initial number of outputs for the send */
-       ChanCount outs = (_session->master_out())
+       ChanCount outs = (_route->n_outputs().n_audio() && _session->master_out())
                        ? _session->master_out()->n_outputs()
                        : _route->n_outputs();
 
@@ -1654,9 +2549,6 @@ ProcessorBox::send_io_finished (IOSelector::Result r, boost::weak_ptr<Processor>
 
        case IOSelector::Accepted:
                _route->add_processor_by_index (processor, _placement);
-               if (Profile->get_sae()) {
-                       processor->activate ();
-               }
                break;
        }
 
@@ -1682,9 +2574,6 @@ ProcessorBox::return_io_finished (IOSelector::Result r, boost::weak_ptr<Processo
 
        case IOSelector::Accepted:
                _route->add_processor_by_index (processor, _placement);
-               if (Profile->get_sae()) {
-                       processor->activate ();
-               }
                break;
        }
 
@@ -1733,11 +2622,13 @@ ProcessorBox::redisplay_processors ()
        _visible_prefader_processors = 0;
        fader_seen = false;
 
-       _route->foreach_processor (sigc::bind (sigc::mem_fun (*this, &ProcessorBox::help_count_visible_prefader_processors), 
+       _route->foreach_processor (sigc::bind (sigc::mem_fun (*this, &ProcessorBox::help_count_visible_prefader_processors),
                                               &_visible_prefader_processors, &fader_seen));
 
        _route->foreach_processor (sigc::mem_fun (*this, &ProcessorBox::add_processor_to_display));
        _route->foreach_processor (sigc::mem_fun (*this, &ProcessorBox::maybe_add_processor_to_ui_list));
+       _route->foreach_processor (sigc::mem_fun (*this, &ProcessorBox::maybe_add_processor_pin_mgr));
+
        setup_entry_positions ();
 }
 
@@ -1780,9 +2671,9 @@ ProcessorBox::maybe_add_processor_to_ui_list (boost::weak_ptr<Processor> w)
        const XMLNode* ui_xml = _session->extra_xml (X_("UI"));
 
        if (ui_xml) {
-               wp->set_state (*ui_xml);
+               wp->set_state (*ui_xml, 0);
        }
-       
+
         void* existing_ui = p->get_ui ();
 
         if (existing_ui) {
@@ -1793,6 +2684,26 @@ ProcessorBox::maybe_add_processor_to_ui_list (boost::weak_ptr<Processor> w)
        WM::Manager::instance().register_window (wp);
 }
 
+void
+ProcessorBox::maybe_add_processor_pin_mgr (boost::weak_ptr<Processor> w)
+{
+       boost::shared_ptr<Processor> p = w.lock ();
+       if (!p || p->pinmgr_proxy ()) {
+               return;
+       }
+
+       PluginPinWindowProxy* wp = new PluginPinWindowProxy (
+                       string_compose ("PM-%2-%3", _route->id(), p->id()), w);
+       wp->set_session (_session);
+
+       const XMLNode* ui_xml = _session->extra_xml (X_("UI"));
+       if (ui_xml) {
+               wp->set_state (*ui_xml, 0);
+       }
+
+       p->set_pingmgr_proxy (wp);
+       WM::Manager::instance().register_window (wp);
+}
 void
 ProcessorBox::help_count_visible_prefader_processors (boost::weak_ptr<Processor> p, uint32_t* cnt, bool* amp_seen)
 {
@@ -1805,7 +2716,8 @@ ProcessorBox::help_count_visible_prefader_processors (boost::weak_ptr<Processor>
                         )
           ) {
 
-               if (boost::dynamic_pointer_cast<Amp>(processor) && boost::dynamic_pointer_cast<Amp>(processor)->type() == X_("amp")) {
+               if (boost::dynamic_pointer_cast<Amp>(processor) &&
+                   boost::dynamic_pointer_cast<Amp>(processor)->gain_control()->parameter().type() == GainAutomation) {
                        *amp_seen = true;
                } else {
                        if (!*amp_seen) {
@@ -1830,7 +2742,7 @@ ProcessorBox::add_processor_to_display (boost::weak_ptr<Processor> p)
        }
 
        boost::shared_ptr<PluginInsert> plugin_insert = boost::dynamic_pointer_cast<PluginInsert> (processor);
-       
+
        ProcessorEntry* e = 0;
        if (plugin_insert) {
                e = new PluginInsertProcessorEntry (this, plugin_insert, _width);
@@ -1841,7 +2753,7 @@ ProcessorBox::add_processor_to_display (boost::weak_ptr<Processor> p)
        boost::shared_ptr<Send> send = boost::dynamic_pointer_cast<Send> (processor);
        boost::shared_ptr<PortInsert> ext = boost::dynamic_pointer_cast<PortInsert> (processor);
        boost::shared_ptr<UnknownProcessor> stub = boost::dynamic_pointer_cast<UnknownProcessor> (processor);
-       
+
        //faders and meters are not deletable, copy/paste-able, so they shouldn't be selectable
        if (!send && !plugin_insert && !ext && !stub)
                e->set_selectable(false);
@@ -1868,7 +2780,16 @@ ProcessorBox::add_processor_to_display (boost::weak_ptr<Processor> p)
                e->show_all_controls ();
        }
 
-       processor_display.add_child (e);
+       if (plugin_insert
+#ifdef MIXBUS
+                       && !plugin_insert->plugin(0)->is_channelstrip()
+#endif
+                )
+       {
+               processor_display.add_child (e, drag_targets());
+       } else {
+               processor_display.add_child (e, drag_targets_noplugin());
+       }
 }
 
 void
@@ -1878,6 +2799,136 @@ ProcessorBox::reordered ()
        setup_entry_positions ();
 }
 
+void
+ProcessorBox::setup_routing_feeds ()
+{
+       list<ProcessorEntry*> children = processor_display.children ();
+       /* first set the i/o maps for every processor */
+       list<ProcessorEntry*>::iterator prev = children.begin();
+
+       for (list<ProcessorEntry*>::iterator i = children.begin(); i != children.end(); ++i) {
+               boost::shared_ptr<ARDOUR::Processor> p = (*i)->processor();
+               boost::shared_ptr<PluginInsert> pi = boost::dynamic_pointer_cast<PluginInsert> (p);
+
+               list<ProcessorEntry*>::iterator next = i;
+               next++;
+
+               if (pi) {
+                       ChanCount sinks = pi->natural_input_streams ();
+                       ChanCount sources = pi->natural_output_streams ();
+                       uint32_t count = pi->get_count ();
+                       ChanCount in, out;
+                       pi->configured_io (in, out);
+
+                       ChanCount midi_thru;
+                       ChanCount midi_bypass;
+                       ChanMapping input_map (pi->input_map ());
+                       if (pi->has_midi_thru ()) {
+                                midi_thru.set(DataType::MIDI, 1);
+                                input_map.set (DataType::MIDI, 0, 0);
+                       }
+                       if (pi->has_midi_bypass ()) {
+                                midi_bypass.set(DataType::MIDI, 1);
+                       }
+
+                       (*i)->input_icon.set_ports (sinks * count + midi_thru);
+                       (*i)->output_icon.set_ports (sources * count + midi_bypass);
+
+                       (*i)->routing_icon.set (
+                                       in, out,
+                                       sinks * count + midi_thru,
+                                       sources * count + midi_bypass,
+                                       input_map,
+                                       pi->output_map (),
+                                       pi->thru_map ());
+
+                       if (next != children.end()) {
+                               (*next)->routing_icon.set_fed_by (out, sources * count + midi_bypass,
+                                               pi->output_map (), pi->thru_map ());
+                       }
+
+                       if (prev != i) {
+                               (*prev)->routing_icon.set_feeding (in, sinks * count + midi_thru,
+                                               pi->input_map (), pi->thru_map ());
+                       }
+
+               } else {
+                       (*i)->input_icon.set_ports (p->input_streams());
+                       (*i)->output_icon.set_ports (p->output_streams());
+                       ChanMapping inmap (p->input_streams ());
+                       ChanMapping outmap (p->input_streams ());
+                       ChanMapping thrumap;
+                       (*i)->routing_icon.set (
+                                       p->input_streams(),
+                                       p->output_streams(),
+                                       p->input_streams(),
+                                       p->output_streams(),
+                                       inmap, outmap, thrumap);
+
+                       if (next != children.end()) {
+                               (*next)->routing_icon.set_fed_by (
+                                               p->output_streams(),
+                                               p->output_streams(),
+                                               outmap, thrumap);
+                       }
+                       if (prev != i) {
+                               (*prev)->routing_icon.set_feeding (
+                                               p->input_streams(),
+                                               p->output_streams(),
+                                               inmap, thrumap);
+                       }
+               }
+
+               if (i == children.begin()) {
+                       (*i)->routing_icon.unset_fed_by ();
+               }
+               prev = i;
+               (*i)->input_icon.hide();
+       }
+
+       /* now set which icons need to be displayed */
+       for (list<ProcessorEntry*>::iterator i = children.begin(); i != children.end(); ++i) {
+               (*i)->output_routing_icon.copy_state ((*i)->routing_icon);
+
+               if ((*i)->routing_icon.in_identity ()) {
+                       (*i)->routing_icon.hide();
+                       if (i == children.begin()) {
+                               (*i)->input_icon.show();
+                       }
+               } else {
+                       (*i)->routing_icon.show();
+                       (*i)->routing_icon.queue_draw();
+                       (*i)->input_icon.show();
+               }
+
+               list<ProcessorEntry*>::iterator next = i;
+               if (++next == children.end()) {
+                       // last processor in the chain
+                       (*i)->output_routing_icon.set_terminal(true);
+                       (*i)->output_routing_icon.unset_feeding ();
+                       if ((*i)->routing_icon.out_identity ()) {
+                               (*i)->output_routing_icon.hide();
+                       } else {
+                               (*i)->output_routing_icon.show();
+                               (*i)->output_routing_icon.queue_draw();
+                       }
+               } else {
+                       (*i)->output_routing_icon.set_terminal(false);
+                       if (   !(*i)->routing_icon.out_identity ()
+                                       && !(*next)->routing_icon.in_identity ()
+                                       &&  (*next)->routing_icon.can_coalesce ()) {
+                               (*i)->output_routing_icon.hide();
+                       } else if (!(*i)->routing_icon.out_identity ()) {
+                               (*i)->output_routing_icon.show();
+                               (*i)->output_routing_icon.queue_draw();
+                               (*next)->input_icon.show();
+                       } else {
+                               (*i)->output_routing_icon.hide();
+                       }
+               }
+       }
+}
+
 void
 ProcessorBox::setup_entry_positions ()
 {
@@ -1886,7 +2937,8 @@ ProcessorBox::setup_entry_positions ()
 
        uint32_t num = 0;
        for (list<ProcessorEntry*>::iterator i = children.begin(); i != children.end(); ++i) {
-               if (boost::dynamic_pointer_cast<Amp>((*i)->processor()) && boost::dynamic_pointer_cast<Amp>((*i)->processor())->type() == X_("amp")) {
+               if (boost::dynamic_pointer_cast<Amp>((*i)->processor()) &&
+                   boost::dynamic_pointer_cast<Amp>((*i)->processor())->gain_control()->parameter().type() == GainAutomation) {
                        pre_fader = false;
                        (*i)->set_position (ProcessorEntry::Fader, num++);
                } else {
@@ -1897,6 +2949,7 @@ ProcessorBox::setup_entry_positions ()
                        }
                }
        }
+       setup_routing_feeds ();
 }
 
 void
@@ -2059,7 +3112,7 @@ ProcessorBox::copy_processors (const ProcSelection& to_be_copied)
                    (boost::dynamic_pointer_cast<Return>((*i)) != 0)) {
                        node->add_child_nocopy ((*i)->get_state());
                }
-       }
+       }
 
        _rr_selection.set (node);
 }
@@ -2220,11 +3273,11 @@ ProcessorBox::paste_processor_state (const XMLNodeList& nlist, boost::shared_ptr
                                continue;
 
                        } else if (type->value() == "intsend") {
-                               
+
                                /* aux sends are OK, but those used for
                                 * other purposes, are not.
                                 */
-                               
+
                                assert (role);
 
                                if (role->value() != "Aux") {
@@ -2253,7 +3306,7 @@ ProcessorBox::paste_processor_state (const XMLNodeList& nlist, boost::shared_ptr
                                Send* s = new Send (*_session, _route->pannable(), _route->mute_master());
 
                                IOProcessor::prepare_for_reset (n, s->name());
-                               
+
                                 if (s->set_state (n, Stateful::loading_state_version)) {
                                         delete s;
                                         return;
@@ -2279,22 +3332,35 @@ ProcessorBox::paste_processor_state (const XMLNodeList& nlist, boost::shared_ptr
 
                                XMLNode n (**niter);
                                PortInsert* pi = new PortInsert (*_session, _route->pannable (), _route->mute_master ());
-                               
+
                                IOProcessor::prepare_for_reset (n, pi->name());
-                               
+
                                if (pi->set_state (n, Stateful::loading_state_version)) {
                                        return;
                                }
-                               
-                               p.reset (pi);
 
+                               p.reset (pi);
                        } else {
                                /* XXX its a bit limiting to assume that everything else
                                   is a plugin.
                                */
                                p.reset (new PluginInsert (*_session));
+                               /* we can't use RAII Stateful::ForceIDRegeneration
+                                * because that'd void copying the state and wrongly bump
+                                * the state-version counter.
+                                * we need to load the state (incl external files) first and
+                                * only then update the ID)
+                                */
                                PBD::ID id = p->id();
-                               p->set_state (**niter, Stateful::current_state_version);
+                               /* strip side-chain state (processor inside processor must be a side-chain)
+                                * otherwise we'll end up with duplicate ports-names.
+                                * (this needs a better solution which retains connections)
+                                * We really would want Stateful::ForceIDRegeneration here :(
+                                */
+                               XMLNode state (**niter);
+                               state.remove_nodes ("Processor");
+
+                               p->set_state (state, Stateful::current_state_version);
                                boost::dynamic_pointer_cast<PluginInsert>(p)->update_id (id);
                        }
 
@@ -2447,7 +3513,7 @@ ProcessorBox::get_editor_window (boost::shared_ptr<Processor> processor, bool us
         * will be forced back into a model where the fader controls the main gain.
         * If the processor is a send, then we map the send controls onto the
         * strip.
-        * 
+        *
         * Plugins and others will return a window for control.
         */
 
@@ -2458,7 +3524,7 @@ ProcessorBox::get_editor_window (boost::shared_ptr<Processor> processor, bool us
                }
        }
 
-       if (boost::dynamic_pointer_cast<Amp> (processor) && boost::dynamic_pointer_cast<Amp> (processor)->type() == X_("amp")) {
+       if (boost::dynamic_pointer_cast<Amp> (processor) && boost::dynamic_pointer_cast<Amp> (processor)->gain_control()->parameter().type() == GainAutomation) {
 
                if (_parent_strip) {
                        _parent_strip->revert_to_default_display ();
@@ -2567,68 +3633,81 @@ ProcessorBox::get_generic_editor_window (boost::shared_ptr<Processor> processor)
 void
 ProcessorBox::register_actions ()
 {
-       Glib::RefPtr<Gtk::ActionGroup> popup_act_grp = Gtk::ActionGroup::create(X_("ProcessorMenu"));
+       processor_box_actions = myactions.create_action_group (X_("ProcessorMenu"));
+
        Glib::RefPtr<Action> act;
 
        /* new stuff */
-       ActionManager::register_action (popup_act_grp, X_("newplugin"), _("New Plugin"),
+       myactions.register_action (processor_box_actions, X_("newplugin"), _("New Plugin"),
                        sigc::ptr_fun (ProcessorBox::rb_choose_plugin));
 
-       act = ActionManager::register_action (popup_act_grp, X_("newinsert"), _("New Insert"),
+       act = myactions.register_action (processor_box_actions, X_("newinsert"), _("New Insert"),
                        sigc::ptr_fun (ProcessorBox::rb_choose_insert));
        ActionManager::engine_sensitive_actions.push_back (act);
-       act = ActionManager::register_action (popup_act_grp, X_("newsend"), _("New External Send ..."),
+       act = myactions.register_action (processor_box_actions, X_("newsend"), _("New External Send ..."),
                        sigc::ptr_fun (ProcessorBox::rb_choose_send));
        ActionManager::engine_sensitive_actions.push_back (act);
 
-       ActionManager::register_action (popup_act_grp, X_("newaux"), _("New Aux Send ..."));
+       myactions.register_action (processor_box_actions, X_("newaux"), _("New Aux Send ..."));
 
-       ActionManager::register_action (popup_act_grp, X_("controls"), _("Controls"));
-       ActionManager::register_action (popup_act_grp, X_("send_options"), _("Send Options"));
+       myactions.register_action (processor_box_actions, X_("controls"), _("Controls"));
+       myactions.register_action (processor_box_actions, X_("send_options"), _("Send Options"));
 
-       ActionManager::register_action (popup_act_grp, X_("clear"), _("Clear (all)"),
+       myactions.register_action (processor_box_actions, X_("clear"), _("Clear (all)"),
                        sigc::ptr_fun (ProcessorBox::rb_clear));
-       ActionManager::register_action (popup_act_grp, X_("clear_pre"), _("Clear (pre-fader)"),
+       myactions.register_action (processor_box_actions, X_("clear_pre"), _("Clear (pre-fader)"),
                        sigc::ptr_fun (ProcessorBox::rb_clear_pre));
-       ActionManager::register_action (popup_act_grp, X_("clear_post"), _("Clear (post-fader)"),
+       myactions.register_action (processor_box_actions, X_("clear_post"), _("Clear (post-fader)"),
                        sigc::ptr_fun (ProcessorBox::rb_clear_post));
 
        /* standard editing stuff */
-       cut_action = ActionManager::register_action (popup_act_grp, X_("cut"), _("Cut"),
-                                                     sigc::ptr_fun (ProcessorBox::rb_cut));
-       copy_action = ActionManager::register_action (popup_act_grp, X_("copy"), _("Copy"),
-                       sigc::ptr_fun (ProcessorBox::rb_copy));
-       delete_action = ActionManager::register_action (popup_act_grp, X_("delete"), _("Delete"),
-                       sigc::ptr_fun (ProcessorBox::rb_delete));
-
-       paste_action = ActionManager::register_action (popup_act_grp, X_("paste"), _("Paste"),
+
+       cut_action = myactions.register_action (processor_box_actions, X_("cut"), _("Cut"),
+                                                           sigc::ptr_fun (ProcessorBox::rb_cut));
+       copy_action = myactions.register_action (processor_box_actions, X_("copy"), _("Copy"),
+                                                            sigc::ptr_fun (ProcessorBox::rb_copy));
+       delete_action = myactions.register_action (processor_box_actions, X_("delete"), _("Delete"),
+                                                              sigc::ptr_fun (ProcessorBox::rb_delete));
+       backspace_action = myactions.register_action (processor_box_actions, X_("backspace"), _("Delete"),
+                                                              sigc::ptr_fun (ProcessorBox::rb_delete));
+
+       ActionManager::plugin_selection_sensitive_actions.push_back (cut_action);
+       ActionManager::plugin_selection_sensitive_actions.push_back (copy_action);
+       ActionManager::plugin_selection_sensitive_actions.push_back (delete_action);
+       ActionManager::plugin_selection_sensitive_actions.push_back (backspace_action);
+
+       paste_action = myactions.register_action (processor_box_actions, X_("paste"), _("Paste"),
                        sigc::ptr_fun (ProcessorBox::rb_paste));
-       rename_action = ActionManager::register_action (popup_act_grp, X_("rename"), _("Rename"),
+       rename_action = myactions.register_action (processor_box_actions, X_("rename"), _("Rename"),
                        sigc::ptr_fun (ProcessorBox::rb_rename));
-       ActionManager::register_action (popup_act_grp, X_("selectall"), _("Select All"),
+       myactions.register_action (processor_box_actions, X_("selectall"), _("Select All"),
                        sigc::ptr_fun (ProcessorBox::rb_select_all));
-       ActionManager::register_action (popup_act_grp, X_("deselectall"), _("Deselect All"),
+       myactions.register_action (processor_box_actions, X_("deselectall"), _("Deselect All"),
                        sigc::ptr_fun (ProcessorBox::rb_deselect_all));
 
        /* activation etc. */
 
-       ActionManager::register_action (popup_act_grp, X_("activate_all"), _("Activate All"),
+       myactions.register_action (processor_box_actions, X_("activate_all"), _("Activate All"),
                        sigc::ptr_fun (ProcessorBox::rb_activate_all));
-       ActionManager::register_action (popup_act_grp, X_("deactivate_all"), _("Deactivate All"),
+       myactions.register_action (processor_box_actions, X_("deactivate_all"), _("Deactivate All"),
                        sigc::ptr_fun (ProcessorBox::rb_deactivate_all));
-       ActionManager::register_action (popup_act_grp, X_("ab_plugins"), _("A/B Plugins"),
+       myactions.register_action (processor_box_actions, X_("ab_plugins"), _("A/B Plugins"),
                        sigc::ptr_fun (ProcessorBox::rb_ab_plugins));
 
+       manage_pins_action = myactions.register_action (
+               processor_box_actions, X_("manage-pins"), _("Pin Connections..."),
+               sigc::ptr_fun (ProcessorBox::rb_manage_pins));
+
        /* show editors */
-       edit_action = ActionManager::register_action (
-               popup_act_grp, X_("edit"), _("Edit..."),
+       edit_action = myactions.register_action (
+               processor_box_actions, X_("edit"), _("Edit..."),
                sigc::ptr_fun (ProcessorBox::rb_edit));
 
-       edit_generic_action = ActionManager::register_action (
-               popup_act_grp, X_("edit-generic"), _("Edit with generic controls..."),
+       edit_generic_action = myactions.register_action (
+               processor_box_actions, X_("edit-generic"), _("Edit with generic controls..."),
                sigc::ptr_fun (ProcessorBox::rb_edit_generic));
 
-       ActionManager::add_action_group (popup_act_grp);
+       load_bindings ();
 }
 
 void
@@ -2651,6 +3730,15 @@ ProcessorBox::rb_ab_plugins ()
        _current_processor_box->ab_plugins ();
 }
 
+void
+ProcessorBox::rb_manage_pins ()
+{
+       if (_current_processor_box == 0) {
+               return;
+       }
+
+       _current_processor_box->for_selected_processors (&ProcessorBox::manage_pins);
+}
 void
 ProcessorBox::rb_choose_plugin ()
 {
@@ -2844,12 +3932,15 @@ ProcessorBox::edit_processor (boost::shared_ptr<Processor> processor)
        if (edit_aux_send (processor)) {
                return;
        }
+       if (!_session->engine().connected()) {
+               return;
+       }
 
        ProcessorWindowProxy* proxy = find_window_proxy (processor);
 
        if (proxy) {
                proxy->set_custom_ui_mode (true);
-               proxy->toggle ();
+               proxy->show_the_right_window ();
        }
 }
 
@@ -2862,15 +3953,32 @@ ProcessorBox::generic_edit_processor (boost::shared_ptr<Processor> processor)
        if (edit_aux_send (processor)) {
                return;
        }
+       if (!_session->engine().connected()) {
+               return;
+       }
 
        ProcessorWindowProxy* proxy = find_window_proxy (processor);
 
        if (proxy) {
                proxy->set_custom_ui_mode (false);
-               proxy->toggle ();
+               proxy->show_the_right_window ();
+       }
+}
+
+void
+ProcessorBox::manage_pins (boost::shared_ptr<Processor> processor)
+{
+       if (!processor) {
+               return;
+       }
+       PluginPinWindowProxy* proxy = processor->pinmgr_proxy ();
+       if (proxy) {
+               proxy->get (true);
+               proxy->present();
        }
 }
 
+
 void
 ProcessorBox::route_property_changed (const PropertyChange& what_changed)
 {
@@ -2888,7 +3996,7 @@ ProcessorBox::route_property_changed (const PropertyChange& what_changed)
 
        for (list<ProcessorEntry*>::iterator iter = children.begin(); iter != children.end(); ++iter) {
 
-               processor = (*iter)->processor ();
+               processor = (*iter)->processor ();
 
                if (!processor) {
                        continue;
@@ -2994,6 +4102,10 @@ void
 ProcessorBox::processor_menu_unmapped ()
 {
        processor_display.remove_placeholder ();
+       /* make all possibly-desensitized actions sensitive again so that
+          they be activated by other means (e.g. bindings)
+       */
+       ActionManager::set_sensitive (ActionManager::plugin_selection_sensitive_actions, true);
 }
 
 XMLNode *
@@ -3004,7 +4116,7 @@ ProcessorBox::entry_gui_object_state (ProcessorEntry* entry)
        }
 
        GUIObjectState& st = _parent_strip->gui_object_state ();
-       
+
        XMLNode* strip = st.get_or_add_node (_parent_strip->state_id ());
        assert (strip);
        return st.get_or_add_node (strip, entry->state_id());
@@ -3065,14 +4177,14 @@ ProcessorWindowProxy::processor_going_away ()
 }
 
 ARDOUR::SessionHandlePtr*
-ProcessorWindowProxy::session_handle() 
+ProcessorWindowProxy::session_handle()
 {
        /* we don't care */
        return 0;
 }
 
 XMLNode&
-ProcessorWindowProxy::get_state () const
+ProcessorWindowProxy::get_state ()
 {
        XMLNode *node;
        node = &ProxyBase::get_state();
@@ -3080,13 +4192,13 @@ ProcessorWindowProxy::get_state () const
        return *node;
 }
 
-void
-ProcessorWindowProxy::set_state (const XMLNode& node)
+int
+ProcessorWindowProxy::set_state (const XMLNode& node, int /*version*/)
 {
        XMLNodeList children = node.children ();
        XMLNodeList::const_iterator i = children.begin ();
        while (i != children.end()) {
-               XMLProperty* prop = (*i)->property (X_("name"));
+               XMLProperty const * prop = (*i)->property (X_("name"));
                if ((*i)->name() == X_("Window") && prop && prop->value() == _name) {
                        break;
                }
@@ -3094,13 +4206,13 @@ ProcessorWindowProxy::set_state (const XMLNode& node)
        }
 
        if (i != children.end()) {
-               XMLProperty* prop;
+               XMLProperty const * prop;
                if ((prop = (*i)->property (X_("custom-ui"))) != 0) {
                        want_custom = PBD::string_is_affirmative (prop->value ());
                }
        }
 
-       ProxyBase::set_state(node);
+       return ProxyBase::set_state (node, 0);
 }
 
 Gtk::Window*
@@ -3120,26 +4232,87 @@ ProcessorWindowProxy::get (bool create)
                if (!create) {
                        return 0;
                }
-               
+
                is_custom = want_custom;
                _window = _processor_box->get_editor_window (p, is_custom);
 
                if (_window) {
                        setup ();
                }
+               _window->show_all ();
        }
-
        return _window;
 }
 
 void
-ProcessorWindowProxy::toggle ()
+ProcessorWindowProxy::show_the_right_window ()
 {
        if (_window && (is_custom != want_custom)) {
                /* drop existing window - wrong type */
                drop_window ();
        }
-       is_custom = want_custom;
+       toggle ();
+}
+
+
+PluginPinWindowProxy::PluginPinWindowProxy(std::string const &name, boost::weak_ptr<ARDOUR::Processor> processor)
+       : WM::ProxyBase (name, string())
+       , _processor (processor)
+{
+       boost::shared_ptr<Processor> p = _processor.lock ();
+       if (!p) {
+               return;
+       }
+       p->DropReferences.connect (going_away_connection, MISSING_INVALIDATOR, boost::bind (&PluginPinWindowProxy::processor_going_away, this), gui_context());
+}
+
+PluginPinWindowProxy::~PluginPinWindowProxy()
+{
+       _window = 0;
+}
+
+ARDOUR::SessionHandlePtr*
+PluginPinWindowProxy::session_handle ()
+{
+       ArdourWindow* aw = dynamic_cast<ArdourWindow*> (_window);
+       if (aw) { return aw; }
+       return 0;
+}
+
+Gtk::Window*
+PluginPinWindowProxy::get (bool create)
+{
+       boost::shared_ptr<Processor> p = _processor.lock ();
+       boost::shared_ptr<PluginInsert> pi = boost::dynamic_pointer_cast<PluginInsert> (p);
+       if (!p || !pi) {
+               return 0;
+       }
+
+       if (!_window) {
+               if (!create) {
+                       return 0;
+               }
+               _window = new PluginPinDialog (pi);
+               ArdourWindow* aw = dynamic_cast<ArdourWindow*> (_window);
+               if (aw) {
+                       aw->set_session (_session);
+               }
+               _window->show_all ();
+       }
+       return _window;
+}
+
+void
+PluginPinWindowProxy::processor_going_away ()
+{
+       delete _window;
+       _window = 0;
+       WM::Manager::instance().remove (this);
+       going_away_connection.disconnect();
+}
 
-       WM::ProxyBase::toggle ();
+void
+ProcessorBox::load_bindings ()
+{
+       bindings = Bindings::get_bindings (X_("Processor Box"), myactions);
 }