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redirect_box.cc

/*
    Copyright (C) 2000-2004 Paul Davis

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

#include <cmath>
#include <iostream>

#include <sigc++/bind.h>

#include <pbd/convert.h>

#include <glibmm/miscutils.h>

#include <gtkmm/messagedialog.h>

#include <gtkmm2ext/gtk_ui.h>
#include <gtkmm2ext/utils.h>
#include <gtkmm2ext/choice.h>
#include <gtkmm2ext/utils.h>
#include <gtkmm2ext/stop_signal.h>
#include <gtkmm2ext/doi.h>

#include <ardour/ardour.h>
#include <ardour/session.h>
#include <ardour/audioengine.h>
#include <ardour/route.h>
#include <ardour/audio_track.h>
#include <ardour/audio_diskstream.h>
#include <ardour/send.h>
#include <ardour/insert.h>
#include <ardour/ladspa_plugin.h>
#include <ardour/connection.h>
#include <ardour/session_connection.h>
#include <ardour/profile.h>

#include "ardour_ui.h"
#include "ardour_dialog.h"
#include "public_editor.h"
#include "redirect_box.h"
#include "keyboard.h"
#include "plugin_selector.h"
#include "route_redirect_selection.h"
#include "mixer_ui.h"
#include "actions.h"
#include "plugin_ui.h"
#include "send_ui.h"
#include "io_selector.h"
#include "utils.h"
#include "gui_thread.h"

#include "i18n.h"

#ifdef HAVE_AUDIOUNITS
class AUPluginUI;
#endif

using namespace sigc;
using namespace ARDOUR;
using namespace PBD;
using namespace Gtk;
using namespace Glib;
using namespace Gtkmm2ext;

RedirectBox* RedirectBox::_current_redirect_box = 0;
RefPtr<Action> RedirectBox::cut_action;
RefPtr<Action> RedirectBox::paste_action;
bool RedirectBox::get_colors = true;
Gdk::Color* RedirectBox::active_redirect_color;
Gdk::Color* RedirectBox::inactive_redirect_color;

RedirectBox::RedirectBox (Placement pcmnt, Session& sess, PluginSelector &plugsel, 
                    RouteRedirectSelection& rsel, bool owner_is_mixer)
      : _session(sess), 
        _owner_is_mixer (owner_is_mixer), 
        _placement(pcmnt), 
        _plugin_selector(plugsel),
        _rr_selection(rsel)
{
      if (get_colors) {
            active_redirect_color = new Gdk::Color;
            inactive_redirect_color = new Gdk::Color;
            set_color (*active_redirect_color, rgba_from_style ("RedirectSelector", 0xff, 0, 0, 0, "fg", Gtk::STATE_ACTIVE, false ));
            set_color (*inactive_redirect_color, rgba_from_style ("RedirectSelector", 0xff, 0, 0, 0, "fg", Gtk::STATE_NORMAL, false ));
            get_colors = false;
      }

      _width = Wide;
      redirect_menu = 0;
      send_action_menu = 0;
      redirect_drag_in_progress = false;
      no_redirect_redisplay = false;
      ignore_delete = false;

      model = ListStore::create(columns);

      RefPtr<TreeSelection> selection = redirect_display.get_selection();
      selection->set_mode (Gtk::SELECTION_MULTIPLE);
      selection->signal_changed().connect (mem_fun (*this, &RedirectBox::selection_changed));

      redirect_display.set_model (model);
      redirect_display.append_column (X_("notshown"), columns.text);
      redirect_display.set_name ("RedirectSelector");
      redirect_display.set_headers_visible (false);
      redirect_display.set_reorderable (true);
      redirect_display.set_size_request (-1, 40);
      redirect_display.get_column(0)->set_sizing(TREE_VIEW_COLUMN_FIXED);
      redirect_display.get_column(0)->set_fixed_width(48);
      redirect_display.add_object_drag (columns.redirect.index(), "redirects");
      redirect_display.signal_drop.connect (mem_fun (*this, &RedirectBox::object_drop));

      TreeViewColumn* name_col = redirect_display.get_column(0);
      CellRendererText* renderer = dynamic_cast<CellRendererText*>(redirect_display.get_column_cell_renderer (0));
      name_col->add_attribute(renderer->property_foreground_gdk(), columns.color);

      redirect_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
      
      model->signal_row_deleted().connect (mem_fun (*this, &RedirectBox::row_deleted));

      redirect_scroller.add (redirect_display);
      redirect_eventbox.add (redirect_scroller);
      
      redirect_scroller.set_size_request (-1, 40);

      pack_start (redirect_eventbox, true, true);

      redirect_eventbox.signal_enter_notify_event().connect (bind (sigc::ptr_fun (RedirectBox::enter_box), this));

      redirect_display.signal_button_press_event().connect (mem_fun(*this, &RedirectBox::redirect_button_press_event), false);
      redirect_display.signal_button_release_event().connect (mem_fun(*this, &RedirectBox::redirect_button_release_event));
}

RedirectBox::~RedirectBox ()
{
}

void
RedirectBox::set_route (boost::shared_ptr<Route> r)
{

      connections.clear ();

        /* since we're dealing with a new route, any existing limit on redisplay
         must be irrelevant.
      */

      no_redirect_redisplay = false;
      _route = r;

      connections.push_back (_route->redirects_changed.connect (mem_fun(*this, &RedirectBox::redisplay_redirects)));
      connections.push_back (_route->GoingAway.connect (mem_fun (*this, &RedirectBox::route_going_away)));
      connections.push_back (_route->name_changed.connect (mem_fun(*this, &RedirectBox::route_name_changed)));

      redisplay_redirects (0);
}

void
RedirectBox::route_going_away ()
{
      /* don't keep updating display as redirects are deleted */
      no_redirect_redisplay = true;
}

void
RedirectBox::object_drop (const list<boost::shared_ptr<Redirect> >& redirects)
{
      paste_redirect_list (redirects);
}

void
RedirectBox::update()
{
      redisplay_redirects (0);
}

void
RedirectBox::set_width (Width w)
{
      if (_width == w) {
            return;
      }
      _width = w;
      if (w == -1) {
            abort ();
      }
      redisplay_redirects (0);
}

void
RedirectBox::remove_redirect_gui (boost::shared_ptr<Redirect> redirect)
{
      boost::shared_ptr<Insert> insert;
      boost::shared_ptr<Send> send;
      boost::shared_ptr<PortInsert> port_insert;

      if ((insert = boost::dynamic_pointer_cast<Insert> (redirect)) != 0) {

            if ((port_insert = boost::dynamic_pointer_cast<PortInsert> (insert)) != 0) {
                  PortInsertUI *io_selector = reinterpret_cast<PortInsertUI *> (port_insert->get_gui());
                  port_insert->set_gui (0);
                  delete io_selector;
            } 

      } else if ((send = boost::dynamic_pointer_cast<Send> (insert)) != 0) {
            SendUIWindow *sui = reinterpret_cast<SendUIWindow*> (send->get_gui());
            send->set_gui (0);
            delete sui;
      }
}

void 
RedirectBox::build_send_action_menu ()

{
      using namespace Menu_Helpers;

      send_action_menu = new Menu;
      send_action_menu->set_name ("ArdourContextMenu");
      MenuList& items = send_action_menu->items();

      items.push_back (MenuElem (_("New send"), mem_fun(*this, &RedirectBox::new_send)));
      items.push_back (MenuElem (_("Show send controls"), mem_fun(*this, &RedirectBox::show_send_controls)));
}

void
RedirectBox::show_send_controls ()

{
}

void
RedirectBox::new_send ()

{
}

void
RedirectBox::show_redirect_menu (gint arg)
{
      if (redirect_menu == 0) {
            redirect_menu = build_redirect_menu ();
      }

      Gtk::MenuItem* plugin_menu_item = dynamic_cast<Gtk::MenuItem*>(ActionManager::get_widget("/redirectmenu/newplugin"));

      if (plugin_menu_item) {
            plugin_menu_item->set_submenu (_plugin_selector.plugin_menu());
      }

      cut_action->set_sensitive (can_cut_redirects ());
      
      paste_action->set_sensitive (!_rr_selection.redirects.empty());

      redirect_menu->popup (1, arg);
}

void
RedirectBox::redirect_drag_begin (GdkDragContext *context)
{
      redirect_drag_in_progress = true;
}

void
RedirectBox::redirect_drag_end (GdkDragContext *context)
{
      redirect_drag_in_progress = false;
}

bool
RedirectBox::redirect_button_press_event (GdkEventButton *ev)
{
      TreeIter iter;
      TreeModel::Path path;
      TreeViewColumn* column;
      int cellx;
      int celly;
      boost::shared_ptr<Redirect> redirect;
      int ret = false;
      bool selected = false;

      if (redirect_display.get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
            if ((iter = model->get_iter (path))) {
                  redirect = (*iter)[columns.redirect];
                  selected = redirect_display.get_selection()->is_selected (iter);
            }
            
      }

      if (redirect && (Keyboard::is_edit_event (ev) || (ev->button == 1 && ev->type == GDK_2BUTTON_PRESS))) {
            
            if (_session.engine().connected()) {
                  /* XXX giving an error message here is hard, because we may be in the midst of a button press */
                  edit_redirect (redirect);
            }
            ret = true;
            
      } else if (redirect && ev->button == 1 && selected) {

            // this is purely informational but necessary
            RedirectSelected (redirect); // emit

      } else if (!redirect && ev->button == 1 && ev->type == GDK_2BUTTON_PRESS) {

            choose_plugin ();
            _plugin_selector.show_manager ();

      }
      
      return ret;
}

bool
RedirectBox::redirect_button_release_event (GdkEventButton *ev)
{
      TreeIter iter;
      TreeModel::Path path;
      TreeViewColumn* column;
      int cellx;
      int celly;
      boost::shared_ptr<Redirect> redirect;
      int ret = false;


      if (redirect_display.get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
            if ((iter = model->get_iter (path))) {
                  redirect = (*iter)[columns.redirect];
            }
      }

      if (redirect && Keyboard::is_delete_event (ev)) {
            
            Glib::signal_idle().connect (bind (mem_fun(*this, &RedirectBox::idle_delete_redirect), boost::weak_ptr<Redirect>(redirect)));
            ret = true;
            
      } else if (Keyboard::is_context_menu_event (ev)) {

            show_redirect_menu(ev->time);
            ret = true;

      } else if (redirect && Keyboard::is_button2_event (ev)
#ifndef GTKOSX
               && (Keyboard::no_modifier_keys_pressed (ev) && ((ev->state & Gdk::BUTTON2_MASK) == Gdk::BUTTON2_MASK))
#endif 
            ) {
            
            /* button2-click with no modifiers */

            redirect->set_active (!redirect->active(), this);
            ret = true;

      } 

      return ret;
}

Menu *
RedirectBox::build_redirect_menu ()
{
      redirect_menu = dynamic_cast<Gtk::Menu*>(ActionManager::get_widget("/redirectmenu") );
      redirect_menu->set_name ("ArdourContextMenu");

      show_all_children();

      return redirect_menu;
}

void
RedirectBox::selection_changed ()
{
      bool sensitive = (redirect_display.get_selection()->count_selected_rows()) ? true : false;
      ActionManager::set_sensitive (ActionManager::plugin_selection_sensitive_actions, sensitive);
}

void
RedirectBox::select_all_redirects ()
{
      redirect_display.get_selection()->select_all();
}

void
RedirectBox::deselect_all_redirects ()
{
      redirect_display.get_selection()->unselect_all();
}

void
RedirectBox::choose_plugin ()
{
      _plugin_selector.set_interested_object (*this);
}

void
RedirectBox::use_plugins (const SelectedPlugins& plugins)
{
      for (SelectedPlugins::const_iterator p = plugins.begin(); p != plugins.end(); ++p) {

            boost::shared_ptr<Redirect> redirect (new PluginInsert (_session, *p, _placement));

            uint32_t err_streams;

            if (Config->get_new_plugins_active()) {
                  redirect->set_active (true, this);
            }
            
            if (_route->add_redirect (redirect, this, &err_streams)) {
                  weird_plugin_dialog (**p, err_streams, _route);
            } else {
                  
                  if (Profile->get_sae()) {
                        redirect->set_active (true, 0);
                  }
                  redirect->active_changed.connect (bind (mem_fun (*this, &RedirectBox::show_redirect_active_r), boost::weak_ptr<Redirect>(redirect)));
            }
      }
}

void
RedirectBox::weird_plugin_dialog (Plugin& p, uint32_t streams, boost::shared_ptr<IO> io)
{
      ArdourDialog dialog (_("ardour: weird plugin dialog"));
      Label label;

      /* i hate this kind of code */

      if (streams > (unsigned)p.get_info()->n_inputs) {
            label.set_text (string_compose (_(
"You attempted to add a plugin (%1).\n"
"The plugin has %2 inputs\n"
"but at the insertion point, there are\n"
"%3 active signal streams.\n"
"\n"
"This makes no sense - you are throwing away\n"
"part of the signal."),
                               p.name(),
                               p.get_info()->n_inputs,
                               streams));
      } else if (streams < (unsigned)p.get_info()->n_inputs) {
            label.set_text (string_compose (_(
"You attempted to add a plugin (%1).\n"
"The plugin has %2 inputs\n"
"but at the insertion point there are\n"
"only %3 active signal streams.\n"
"\n"
"This makes no sense - unless the plugin supports\n"
"side-chain inputs. A future version of Ardour will\n"
"support this type of configuration."),
                               p.name(),
                               p.get_info()->n_inputs,
                               streams));
      } else {
            label.set_text (string_compose (_(
"You attempted to add a plugin (%1).\n"
"\n"
"The I/O configuration doesn't make sense:\n"
"\n" 
"The plugin has %2 inputs and %3 outputs.\n"
"The track/bus has %4 inputs and %5 outputs.\n"
"The insertion point, has %6 active signals.\n"
"\n"
"Ardour does not understand what to do in such situations.\n"),
                               p.name(),
                               p.get_info()->n_inputs,
                               p.get_info()->n_outputs,
                               io->n_inputs(),
                               io->n_outputs(),
                               streams));
      }

      dialog.set_border_width (PublicEditor::window_border_width);

      label.set_alignment (0.5, 0.5);
      dialog.get_vbox()->pack_start (label);
      dialog.add_button (Stock::OK, RESPONSE_ACCEPT);

      dialog.set_name (X_("PluginIODialog"));
      dialog.set_position (Gtk::WIN_POS_MOUSE);
      dialog.set_modal (true);
      dialog.show_all ();

      dialog.run ();
}

void
RedirectBox::choose_insert ()
{
      boost::shared_ptr<Redirect> redirect (new PortInsert (_session, _placement));
      redirect->active_changed.connect (bind (mem_fun(*this, &RedirectBox::show_redirect_active_r), boost::weak_ptr<Redirect>(redirect)));
      _route->add_redirect (redirect, this);
}

void
RedirectBox::choose_send ()
{
      boost::shared_ptr<Send> send (new Send (_session, _placement));

      /* XXX need redirect lock on route */

      try {
            send->ensure_io (0, _route->max_redirect_outs(), false, this);
      } catch (AudioEngine::PortRegistrationFailure& err) {
            error << string_compose (_("Cannot set up new send: %1"), err.what()) << endmsg;
            return;
      }
      
      IOSelectorWindow *ios = new IOSelectorWindow (_session, send, false, true);
      
      ios->show_all ();

      boost::shared_ptr<Redirect> r = boost::static_pointer_cast<Redirect>(send);

      ios->selector().Finished.connect (bind (mem_fun(*this, &RedirectBox::send_io_finished), boost::weak_ptr<Redirect>(r), ios));
}

void
RedirectBox::send_io_finished (IOSelector::Result r, boost::weak_ptr<Redirect> weak_redirect, IOSelectorWindow* ios)
{
      boost::shared_ptr<Redirect> redirect (weak_redirect.lock());

      if (!redirect) {
            return;
      }

      switch (r) {
      case IOSelector::Cancelled:
            // redirect will go away when all shared_ptrs to it vanish
            break;

      case IOSelector::Accepted:
            _route->add_redirect (redirect, this);
            if (Profile->get_sae()) {
                  redirect->set_active (true, 0);
            }
            break;
      }

      delete_when_idle (ios);
}

void
RedirectBox::redisplay_redirects (void *src)
{
      ENSURE_GUI_THREAD(bind (mem_fun(*this, &RedirectBox::redisplay_redirects), src));

      if (no_redirect_redisplay) {
            return;
      }
      
      ignore_delete = true;
      model->clear ();
      ignore_delete = false;

      redirect_active_connections.clear ();
      redirect_name_connections.clear ();

      void (RedirectBox::*pmf)(boost::shared_ptr<Redirect>) = &RedirectBox::add_redirect_to_display;
      _route->foreach_redirect (this, pmf);

      switch (_placement) {
      case PreFader:
            build_redirect_tooltip(redirect_eventbox, _("Pre-fader inserts, sends & plugins:"));
            break;
      case PostFader:
            build_redirect_tooltip(redirect_eventbox, _("Post-fader inserts, sends & plugins:"));
            break;
      }
}

void
RedirectBox::add_redirect_to_display (boost::shared_ptr<Redirect> redirect)
{
      if (redirect->placement() != _placement) {
            return;
      }
      
      Gtk::TreeModel::Row row = *(model->append());

      row[columns.text] = redirect_name (redirect);
      row[columns.redirect] = redirect;

      show_redirect_active (redirect);

      redirect_active_connections.push_back (redirect->active_changed.connect (bind (mem_fun(*this, &RedirectBox::show_redirect_active_r), boost::weak_ptr<Redirect>(redirect))));
      redirect_name_connections.push_back (redirect->name_changed.connect (bind (mem_fun(*this, &RedirectBox::show_redirect_name), boost::weak_ptr<Redirect>(redirect))));
}

string
RedirectBox::redirect_name (boost::weak_ptr<Redirect> weak_redirect)
{
      boost::shared_ptr<Redirect> redirect (weak_redirect.lock());

      if (!redirect) {
            return string();
      }

      boost::shared_ptr<Send> send;
      string name_display;

      if (!redirect->active()) {
            name_display = " (";
      }

      if ((send = boost::dynamic_pointer_cast<Send> (redirect)) != 0) {

            name_display += '>';

            /* grab the send name out of its overall name */

            string::size_type lbracket, rbracket;
            lbracket = send->name().find ('[');
            rbracket = send->name().find (']');

            switch (_width) {
            case Wide:
                  name_display += send->name().substr (lbracket+1, lbracket-rbracket-1);
                  break;
            case Narrow:
                  name_display += PBD::short_version (send->name().substr (lbracket+1, lbracket-rbracket-1), 4);
                  break;
            }

      } else {

            switch (_width) {
            case Wide:
                  name_display += redirect->name();
                  break;
            case Narrow:
                  name_display += PBD::short_version (redirect->name(), 5);
                  break;
            }

      }

      if (!redirect->active()) {
            name_display += ')';
      }

      return name_display;
}

void
RedirectBox::build_redirect_tooltip (EventBox& box, string start)
{
      string tip(start);

      Gtk::TreeModel::Children children = model->children();
      for(Gtk::TreeModel::Children::iterator iter = children.begin(); iter != children.end(); ++iter) {
            Gtk::TreeModel::Row row = *iter;
            tip += '\n';
            tip += row[columns.text];
      }
      ARDOUR_UI::instance()->tooltips().set_tip (box, tip);
}

void
RedirectBox::show_redirect_name (void* src, boost::weak_ptr<Redirect> redirect)
{
      ENSURE_GUI_THREAD(bind (mem_fun(*this, &RedirectBox::show_redirect_name), src, redirect));
      show_redirect_active (redirect);
}

void
RedirectBox::show_redirect_active_r (Redirect* r, void *src, boost::weak_ptr<Redirect> weak_redirect)
{
      show_redirect_active (weak_redirect);
}

void
RedirectBox::show_redirect_active (boost::weak_ptr<Redirect> weak_redirect)
{
      boost::shared_ptr<Redirect> redirect (weak_redirect.lock());
      
      if (!redirect) {
            return;
      }

      ENSURE_GUI_THREAD(bind (mem_fun(*this, &RedirectBox::show_redirect_active), weak_redirect));
      
      Gtk::TreeModel::Children children = model->children();
      Gtk::TreeModel::Children::iterator iter = children.begin();

      while (iter != children.end()) {

            boost::shared_ptr<Redirect> r = (*iter)[columns.redirect];

            if (r == redirect) {
                  
                  (*iter)[columns.text] = redirect_name (r);
                  
                  if (redirect->active()) {
                        (*iter)[columns.color] = *active_redirect_color;
                  } else {
                        (*iter)[columns.color] = *inactive_redirect_color;
                  }
                  break;
            }

            iter++;
      }
}

void
RedirectBox::row_deleted (const Gtk::TreeModel::Path& path)
{
      if (!ignore_delete) {
            compute_redirect_sort_keys ();
      }
}

void
RedirectBox::compute_redirect_sort_keys ()
{
      uint32_t sort_key = 0;
      Gtk::TreeModel::Children children = model->children();

      for (Gtk::TreeModel::Children::iterator iter = children.begin(); iter != children.end(); ++iter) {
            boost::shared_ptr<Redirect> r = (*iter)[columns.redirect];
            r->set_sort_key (sort_key);
            sort_key++;
      }

      if (_route->sort_redirects ()) {

            redisplay_redirects (0);

            /* now tell them about the problem */

            ArdourDialog dialog (_("ardour: weird plugin dialog"));
            Label label;

            label.set_text (_("\
You cannot reorder this set of redirects\n\
in that way because the inputs and\n\
outputs do not work correctly."));

            dialog.get_vbox()->pack_start (label);
            dialog.add_button (Stock::OK, RESPONSE_ACCEPT);

            dialog.set_name (X_("PluginIODialog"));
            dialog.set_position (Gtk::WIN_POS_MOUSE);
            dialog.set_modal (true);
            dialog.show_all ();

            dialog.run ();
      }
}

void
RedirectBox::rename_redirects ()
{
      vector<boost::shared_ptr<Redirect> > to_be_renamed;
      
      get_selected_redirects (to_be_renamed);

      if (to_be_renamed.empty()) {
            return;
      }

      for (vector<boost::shared_ptr<Redirect> >::iterator i = to_be_renamed.begin(); i != to_be_renamed.end(); ++i) {
            rename_redirect (*i);
      }
}

bool
RedirectBox::can_cut_redirects ()
{
      vector<boost::shared_ptr<Redirect> > sel;
      get_selected_redirects (sel);
      
      /* cut_redirects () does not cut inserts or sends */
      for (vector<boost::shared_ptr<Redirect> >::const_iterator i = sel.begin (); i != sel.end (); ++i) {

            if (boost::dynamic_pointer_cast<PluginInsert>(*i) != 0) {
                  return true;
            }
      }

      return false;
}

void
RedirectBox::cut_redirects ()
{
      vector<boost::shared_ptr<Redirect> > to_be_removed;
      
      get_selected_redirects (to_be_removed);

      if (to_be_removed.empty()) {
            return;
      }

      /* this essentially transfers ownership of the redirect
         of the redirect from the route to the mixer
         selection.
      */
      
      _rr_selection.set (to_be_removed);

      no_redirect_redisplay = true;
      for (vector<boost::shared_ptr<Redirect> >::iterator i = to_be_removed.begin(); i != to_be_removed.end(); ++i) {
            // Do not cut inserts or sends
            if (boost::dynamic_pointer_cast<PluginInsert>((*i)) != 0) {
                  void* gui = (*i)->get_gui ();
            
                  if (gui) {
                        static_cast<Gtk::Widget*>(gui)->hide ();
                  }
            
                  if (_route->remove_redirect (*i, this)) {
                        /* removal failed */
                        _rr_selection.remove (*i);
                  }
            } else {
                  _rr_selection.remove (*i);
            }

      }
      no_redirect_redisplay = false;
      redisplay_redirects (this);
}

void
RedirectBox::copy_redirects ()
{
      vector<boost::shared_ptr<Redirect> > to_be_copied;
      vector<boost::shared_ptr<Redirect> > copies;

      get_selected_redirects (to_be_copied);

      if (to_be_copied.empty()) {
            return;
      }

      for (vector<boost::shared_ptr<Redirect> >::iterator i = to_be_copied.begin(); i != to_be_copied.end(); ++i) {
            // Do not copy inserts 
            if ((boost::dynamic_pointer_cast<PluginInsert>((*i)) != 0) ||
                (boost::dynamic_pointer_cast<Send>((*i)) != 0)) {
                  copies.push_back (Redirect::clone (*i));
            }
      }

      _rr_selection.set (copies);

}

void
RedirectBox::delete_redirects ()
{
      vector<boost::shared_ptr<Redirect> > to_be_deleted;
      
      get_selected_redirects (to_be_deleted);

      if (to_be_deleted.empty()) {
            return;
      }

      for (vector<boost::shared_ptr<Redirect> >::iterator i = to_be_deleted.begin(); i != to_be_deleted.end(); ++i) {
            
            void* gui = (*i)->get_gui ();
            
            if (gui) {
                  static_cast<Gtk::Widget*>(gui)->hide ();
            }

            _route->remove_redirect( *i, this);
      }

      no_redirect_redisplay = false;
      redisplay_redirects (this);
}

gint
RedirectBox::idle_delete_redirect (boost::weak_ptr<Redirect> weak_redirect)
{
      boost::shared_ptr<Redirect> redirect (weak_redirect.lock());

      if (!redirect) {
            return false;
      }

      /* NOT copied to _mixer.selection() */

      no_redirect_redisplay = true;

      void* gui = redirect->get_gui ();
      
      if (gui) {
            static_cast<Gtk::Widget*>(gui)->hide ();
      }
      
      _route->remove_redirect (redirect, this);
      no_redirect_redisplay = false;
      redisplay_redirects (this);

      return false;
}

void
RedirectBox::rename_redirect (boost::shared_ptr<Redirect> redirect)
{
      ArdourPrompter name_prompter (true);
      string result;
      name_prompter.set_prompt (_("rename redirect"));
      name_prompter.set_initial_text (redirect->name());
      name_prompter.add_button (_("Rename"), Gtk::RESPONSE_ACCEPT);
      name_prompter.set_response_sensitive (Gtk::RESPONSE_ACCEPT, false);
      name_prompter.show_all ();

      switch (name_prompter.run ()) {

      case Gtk::RESPONSE_ACCEPT:
            name_prompter.get_result (result);
            if (result.length()) {
                  int tries = 0;
                  string test = result;

                  while (tries < 100) {
                        if (_session.io_name_is_legal (test)) {
                              result = test;
                              break;
                        }
                        tries++;
                        test = string_compose ("%1-%2", result, tries);
                  }

                  if (tries < 100) {
                        redirect->set_name (result, this);
                  } else {
                        ARDOUR_UI::instance()->popup_error 
                              (string_compose (_("At least 100 IO objects exist with a name like %1 - name not changed"), result));
                  }
            }     
            break;
      }

      return;
}

void
RedirectBox::cut_redirect (boost::shared_ptr<Redirect> redirect)
{
      /* this essentially transfers ownership of the redirect
         of the redirect from the route to the mixer
         selection.
      */

      _rr_selection.add (redirect);
      
      void* gui = redirect->get_gui ();

      if (gui) {
            static_cast<Gtk::Widget*>(gui)->hide ();
      }
      
      no_redirect_redisplay = true;
      if (_route->remove_redirect (redirect, this)) {
            _rr_selection.remove (redirect);
      }
      no_redirect_redisplay = false;
      redisplay_redirects (this);
}

void
RedirectBox::copy_redirect (boost::shared_ptr<Redirect> redirect)
{
      boost::shared_ptr<Redirect> copy = Redirect::clone (redirect);
      _rr_selection.add (copy);
}

void
RedirectBox::paste_redirects ()
{
      if (_rr_selection.redirects.empty()) {
            return;
      }

      paste_redirect_list (_rr_selection.redirects);
}

void
RedirectBox::paste_redirect_list (const list<boost::shared_ptr<Redirect> >& redirects)
{
      list<boost::shared_ptr<Redirect> > copies;

      for (list<boost::shared_ptr<Redirect> >::const_iterator i = redirects.begin(); i != redirects.end(); ++i) {

            boost::shared_ptr<Redirect> copy = Redirect::clone (*i);

            copy->set_placement (_placement, this);
            copies.push_back (copy);
      }

      if (_route->add_redirects (copies, this)) {

            string msg = _(
                  "Copying the set of redirects on the clipboard failed,\n\
probably because the I/O configuration of the plugins\n\
could not match the configuration of this track.");
            MessageDialog am (msg);
            am.run ();
      }
}

void
RedirectBox::activate_redirect (boost::shared_ptr<Redirect> r)
{
      r->set_active (true, 0);
}

void
RedirectBox::deactivate_redirect (boost::shared_ptr<Redirect> r)
{
      r->set_active (false, 0);
}

void
RedirectBox::get_selected_redirects (vector<boost::shared_ptr<Redirect> >& redirects)
{
    vector<Gtk::TreeModel::Path> pathlist = redirect_display.get_selection()->get_selected_rows();
 
    for (vector<Gtk::TreeModel::Path>::iterator iter = pathlist.begin(); iter != pathlist.end(); ++iter) {
          redirects.push_back ((*(model->get_iter(*iter)))[columns.redirect]);
    }
}

void
RedirectBox::for_selected_redirects (void (RedirectBox::*pmf)(boost::shared_ptr<Redirect>))
{
    vector<Gtk::TreeModel::Path> pathlist = redirect_display.get_selection()->get_selected_rows();

      for (vector<Gtk::TreeModel::Path>::iterator iter = pathlist.begin(); iter != pathlist.end(); ++iter) {
            boost::shared_ptr<Redirect> redirect = (*(model->get_iter(*iter)))[columns.redirect];
            (this->*pmf)(redirect);
      }
}

void
RedirectBox::clone_redirects ()
{
      RouteSelection& routes (_rr_selection.routes);

      if (!routes.empty()) {
            if (_route->copy_redirects (*routes.front(), _placement)) {
                  string msg = _(
"Copying the set of redirects on the clipboard failed,\n\
probably because the I/O configuration of the plugins\n\
could not match the configuration of this track.");
                  MessageDialog am (msg);
                  am.run ();
            }
      }
}

void
RedirectBox::all_redirects_active (bool state)
{
      _route->all_redirects_active (_placement, state);
}

void
RedirectBox::clear_redirects ()
{
      string prompt;
      vector<string> choices;

      if (boost::dynamic_pointer_cast<AudioTrack>(_route) != 0) {
            if (_placement == PreFader) {
                  prompt = _("Do you really want to remove all pre-fader redirects from this track?\n"
                           "(this cannot be undone)");
            } else {
                  prompt = _("Do you really want to remove all post-fader redirects from this track?\n"
                           "(this cannot be undone)");
            }
      } else {
            if (_placement == PreFader) {
                  prompt = _("Do you really want to remove all pre-fader redirects from this bus?\n"
                           "(this cannot be undone)");
            } else {
                  prompt = _("Do you really want to remove all post-fader redirects from this bus?\n"
                           "(this cannot be undone)");
            }
      }

      choices.push_back (_("Cancel"));
      choices.push_back (_("Yes, remove them all"));

      Gtkmm2ext::Choice prompter (prompt, choices);

      if (prompter.run () == 1) {
            _route->clear_redirects (_placement, this);
      }
}

void
RedirectBox::edit_redirect (boost::shared_ptr<Redirect> redirect)
{
      boost::shared_ptr<Insert> insert;

      if (boost::dynamic_pointer_cast<AudioTrack>(_route) != 0) {

            if (boost::dynamic_pointer_cast<AudioTrack> (_route)->freeze_state() == AudioTrack::Frozen) {
                  return;
            }
      }
      
      if ((insert = boost::dynamic_pointer_cast<Insert> (redirect)) == 0) {
            
            /* it's a send */
            
            if (!_session.engine().connected()) {
                  return;
            }

            boost::shared_ptr<Send> send = boost::dynamic_pointer_cast<Send> (redirect);
            
            SendUIWindow *send_ui;
            
            if (send->get_gui() == 0) {
                  
                  send_ui = new SendUIWindow (send, _session);

                  send_ui->set_title (send->name());

                  send->set_gui (send_ui);
                  
            } else {
                  send_ui = reinterpret_cast<SendUIWindow *> (send->get_gui());
            }
            
            if (send_ui->is_visible()) {
                  send_ui->get_window()->raise ();
            } else {
                  send_ui->show_all ();
                  send_ui->present ();
            }
            
      } else {
            
            /* it's an insert */

            boost::shared_ptr<PluginInsert> plugin_insert;
            boost::shared_ptr<PortInsert> port_insert;
            
            if ((plugin_insert = boost::dynamic_pointer_cast<PluginInsert> (insert)) != 0) {
                  
                  PluginUIWindow *plugin_ui;

                  /* these are both allowed to be null */
                  
                  Container* toplevel = get_toplevel();
                  Window* win = dynamic_cast<Gtk::Window*>(toplevel);
                  
                  if (plugin_insert->get_gui() == 0) {

                        plugin_ui = new PluginUIWindow (win, plugin_insert);
                        
                        plugin_ui->set_title (generate_redirect_title (plugin_insert));
                        
                        plugin_insert->set_gui (plugin_ui);

                  } else {
                        plugin_ui = reinterpret_cast<PluginUIWindow *> (plugin_insert->get_gui());
                        plugin_ui->set_parent (win);
                  }
                  
                  if (plugin_ui->is_visible()) {
                        plugin_ui->get_window()->raise ();
                  } else {
                        plugin_ui->show_all ();
                        plugin_ui->present ();
                  }

            } else if ((port_insert = boost::dynamic_pointer_cast<PortInsert> (insert)) != 0) {
                  
                  if (!_session.engine().connected()) {
                        MessageDialog msg ( _("Not connected to JACK - no I/O changes are possible"));
                        msg.run ();
                        return;
                  }

                  PortInsertWindow *io_selector;

                  if (port_insert->get_gui() == 0) {
                        io_selector = new PortInsertWindow (_session, port_insert);
                        port_insert->set_gui (io_selector);
                        
                  } else {
                        io_selector = reinterpret_cast<PortInsertWindow *> (port_insert->get_gui());
                  }
                  
                  if (io_selector->is_visible()) {
                        io_selector->get_window()->raise ();
                  } else {
                        io_selector->show_all ();
                        io_selector->present ();
                  }
            }
      }
}

bool
RedirectBox::enter_box (GdkEventCrossing *ev, RedirectBox* rb)
{
      switch (ev->detail) {
      case GDK_NOTIFY_INFERIOR:
            break;

      case GDK_NOTIFY_VIRTUAL:
            /* fallthru */

      default:
            _current_redirect_box = rb;
      }

      return false;
}

void
RedirectBox::register_actions ()
{
      Glib::RefPtr<Gtk::ActionGroup> popup_act_grp = Gtk::ActionGroup::create(X_("redirectmenu"));
      Glib::RefPtr<Action> act;

      /* new stuff */
      ActionManager::register_action (popup_act_grp, X_("newplugin"), _("New Plugin"),  sigc::ptr_fun (RedirectBox::rb_choose_plugin));

      act = ActionManager::register_action (popup_act_grp, X_("newinsert"), _("New Insert"),  sigc::ptr_fun (RedirectBox::rb_choose_insert));
      ActionManager::jack_sensitive_actions.push_back (act);
      act = ActionManager::register_action (popup_act_grp, X_("newsend"), _("New Send ..."),  sigc::ptr_fun (RedirectBox::rb_choose_send));
      ActionManager::jack_sensitive_actions.push_back (act);

      ActionManager::register_action (popup_act_grp, X_("clear"), _("Clear"),  sigc::ptr_fun (RedirectBox::rb_clear));

      /* standard editing stuff */
      cut_action = ActionManager::register_action (popup_act_grp, X_("cut"), _("Cut"),  sigc::ptr_fun (RedirectBox::rb_cut));
      ActionManager::plugin_selection_sensitive_actions.push_back (cut_action);
      act = ActionManager::register_action (popup_act_grp, X_("copy"), _("Copy"),  sigc::ptr_fun (RedirectBox::rb_copy));
      ActionManager::plugin_selection_sensitive_actions.push_back(act);

      act = ActionManager::register_action (popup_act_grp, X_("delete"), _("Delete"),  sigc::ptr_fun (RedirectBox::rb_delete));
      ActionManager::plugin_selection_sensitive_actions.push_back(act); // ??

      paste_action = ActionManager::register_action (popup_act_grp, X_("paste"), _("Paste"),  sigc::ptr_fun (RedirectBox::rb_paste));
      act = ActionManager::register_action (popup_act_grp, X_("rename"), _("Rename"),  sigc::ptr_fun (RedirectBox::rb_rename));
      ActionManager::plugin_selection_sensitive_actions.push_back(act);
      ActionManager::register_action (popup_act_grp, X_("selectall"), _("Select All"),  sigc::ptr_fun (RedirectBox::rb_select_all));
      ActionManager::register_action (popup_act_grp, X_("deselectall"), _("Deselect All"),  sigc::ptr_fun (RedirectBox::rb_deselect_all));
            
      /* activation */
      act = ActionManager::register_action (popup_act_grp, X_("activate"), _("Activate"),  sigc::ptr_fun (RedirectBox::rb_activate));
      ActionManager::plugin_selection_sensitive_actions.push_back(act);
      act = ActionManager::register_action (popup_act_grp, X_("deactivate"), _("Deactivate"),  sigc::ptr_fun (RedirectBox::rb_deactivate));
      ActionManager::plugin_selection_sensitive_actions.push_back(act);
      ActionManager::register_action (popup_act_grp, X_("activate_all"), _("Activate all"),  sigc::ptr_fun (RedirectBox::rb_activate_all));
      ActionManager::register_action (popup_act_grp, X_("deactivate_all"), _("Deactivate all"),  sigc::ptr_fun (RedirectBox::rb_deactivate_all));

      /* show editors */
      act = ActionManager::register_action (popup_act_grp, X_("edit"), _("Edit"),  sigc::ptr_fun (RedirectBox::rb_edit));
      ActionManager::plugin_selection_sensitive_actions.push_back(act);

      ActionManager::add_action_group (popup_act_grp);


}

void
RedirectBox::rb_choose_plugin ()
{
      if (_current_redirect_box == 0) {
            return;
      }
      _current_redirect_box->choose_plugin ();
}

void
RedirectBox::rb_choose_insert ()
{
      if (_current_redirect_box == 0) {
            return;
      }
      _current_redirect_box->choose_insert ();
}

void
RedirectBox::rb_choose_send ()
{
      if (_current_redirect_box == 0) {
            return;
      }
      _current_redirect_box->choose_send ();
}

void
RedirectBox::rb_clear ()
{
      if (_current_redirect_box == 0) {
            return;
      }

      _current_redirect_box->clear_redirects ();
}

void
RedirectBox::rb_cut ()
{
      if (_current_redirect_box == 0) {
            return;
      }

      _current_redirect_box->cut_redirects ();
}

void
RedirectBox::rb_delete ()
{
      if (_current_redirect_box == 0) {
            return;
      }

      _current_redirect_box->delete_redirects ();
}

void
RedirectBox::rb_copy ()
{
      if (_current_redirect_box == 0) {
            return;
      }
      _current_redirect_box->copy_redirects ();
}

void
RedirectBox::rb_paste ()
{
      if (_current_redirect_box == 0) {
            return;
      }

      _current_redirect_box->paste_redirects ();
}

void
RedirectBox::rb_rename ()
{
      if (_current_redirect_box == 0) {
            return;
      }
      _current_redirect_box->rename_redirects ();
}

void
RedirectBox::rb_select_all ()
{
      if (_current_redirect_box == 0) {
            return;
      }

      _current_redirect_box->select_all_redirects ();
}

void
RedirectBox::rb_deselect_all ()
{
      if (_current_redirect_box == 0) {
            return;
      }

      _current_redirect_box->deselect_all_redirects ();
}

void
RedirectBox::rb_activate ()
{
      if (_current_redirect_box == 0) {
            return;
      }

      _current_redirect_box->for_selected_redirects (&RedirectBox::activate_redirect);
}

void
RedirectBox::rb_deactivate ()
{
      if (_current_redirect_box == 0) {
            return;
      }
      _current_redirect_box->for_selected_redirects (&RedirectBox::deactivate_redirect);
}

void
RedirectBox::rb_activate_all ()
{
      if (_current_redirect_box == 0) {
            return;
      }

      _current_redirect_box->all_redirects_active (true);
}

void
RedirectBox::rb_deactivate_all ()
{
      if (_current_redirect_box == 0) {
            return;
      }
      _current_redirect_box->all_redirects_active (false);
}

void
RedirectBox::rb_edit ()
{
      if (_current_redirect_box == 0) {
            return;
      }

      _current_redirect_box->for_selected_redirects (&RedirectBox::edit_redirect);
}

void
RedirectBox::route_name_changed (void* src)
{
      boost::shared_ptr<Redirect> redirect;
      boost::shared_ptr<Insert> insert;
      Gtk::TreeModel::Children children = model->children();

      for (Gtk::TreeModel::Children::iterator iter = children.begin(); iter != children.end(); ++iter) {
            Gtk::TreeModel::Row row = *iter;

            redirect= row[columns.redirect];
            
            void* gui = redirect->get_gui();

            if (!gui) {
                  continue;
            }

            /* rename editor windows for sends and plugins */

            if ((insert = boost::dynamic_pointer_cast<Insert> (redirect)) == 0) {
                  boost::shared_ptr<Send> send = boost::dynamic_pointer_cast<Send> (redirect);
                  static_cast<Window*>(gui)->set_title (send->name());
            } else {
                  boost::shared_ptr<PluginInsert> plugin_insert;
                  
                  if ((plugin_insert = boost::dynamic_pointer_cast<PluginInsert> (insert)) != 0) {
                        static_cast<Window*>(gui)->set_title (generate_redirect_title (plugin_insert));
                  }
            }
      }
}

string 
RedirectBox::generate_redirect_title (boost::shared_ptr<PluginInsert> pi)
{
      string maker = pi->plugin()->maker() ? pi->plugin()->maker() : "";
      string::size_type email_pos;

      if ((email_pos = maker.find_first_of ('<')) != string::npos) {
            maker = maker.substr (0, email_pos - 1);
      }

      if (maker.length() > 32) {
            maker = maker.substr (0, 32);
            maker += " ...";
      }

      return string_compose(_("%1: %2 (by %3)"), _route->name(), pi->name(), maker);      
}


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