gtk2_ardour/connection_editor.cc

   1 /*
   2     Copyright (C) 2002 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include <map>
  21 #include <vector>
  22 #include <stdint.h>
  23
  24 #include <gtkmm2ext/gtk_ui.h>
  25 #include <gtkmm2ext/utils.h>
  26 #include <sigc++/bind.h>
  27
  28 #include "connection_editor.h"
  29
  30 #include <ardour/session.h>
  31 #include <ardour/session_connection.h>
  32 #include <ardour/audioengine.h>
  33 #include <ardour/connection.h>
  34
  35 #include "utils.h"
  36 #include "keyboard.h"
  37 #include "prompter.h"
  38
  39 #include "i18n.h"
  40
  41 #include <inttypes.h>
  42
  43 using namespace std;
  44 using namespace ARDOUR;
  45 using namespace PBD;
  46 using namespace Gtk;
  47 using namespace sigc;
  48
  49 ConnectionEditor::ConnectionEditor ()
  50         : ArdourDialog (_("ardour: connections")),
  51           input_frame (_("Input Connections")),
  52           output_frame (_("Output Connections")),
  53           new_input_connection_button (_("New Input")),
  54           new_output_connection_button (_("New Output")),
  55           delete_connection_button (_("Delete")),
  56           clear_button (_("Clear")),
  57           add_port_button (_("Add Port")),
  58           ok_button (_("Close")),
  59           cancel_button (_("Cancel")),
  60           rescan_button (_("Rescan"))
  61
  62 {
  63         add_events (Gdk::KEY_PRESS_MASK|Gdk::KEY_RELEASE_MASK);
  64
  65         session = 0;
  66         selected_port = -1;
  67         current_connection = 0;
  68         push_at_front = false;
  69
  70         set_name ("ConnectionEditorWindow");
  71
  72         ok_button.set_name ("ConnectionEditorButton");
  73         cancel_button.set_name ("ConnectionEditorButton");
  74         rescan_button.set_name ("ConnectionEditorButton");
  75         new_input_connection_button.set_name ("ConnectionEditorButton");
  76         new_output_connection_button.set_name ("ConnectionEditorButton");
  77         clear_button.set_name ("ConnectionEditorButton");
  78
  79         button_frame.set_name ("ConnectionEditorFrame");
  80         input_frame.set_name ("ConnectionEditorFrame");
  81         output_frame.set_name ("ConnectionEditorFrame");
  82
  83         button_box.set_spacing (15);
  84         button_box.set_border_width (5);
  85         Gtkmm2ext::set_size_request_to_display_given_text (ok_button, _("OK"), 40, 15);
  86         button_box.pack_end (ok_button, false, false);
  87         // button_box.pack_end (cancel_button, false, false);
  88         cancel_button.hide();
  89         button_frame.add (button_box);
  90
  91         ok_button.signal_clicked().connect (mem_fun(*this, &ConnectionEditor::accept));
  92         cancel_button.signal_clicked().connect (mem_fun(*this, &ConnectionEditor::cancel));
  93         cancel_button.signal_clicked().connect (mem_fun(*this, &ConnectionEditor::rescan));
  94
  95         notebook.set_name ("ConnectionEditorNotebook");
  96         notebook.set_size_request (-1, 125);
  97
  98         clear_button.set_name ("ConnectionEditorButton");
  99         add_port_button.set_name ("ConnectionEditorButton");
 100         Gtkmm2ext::set_size_request_to_display_given_text (add_port_button, _("Add Port"), 35, 15);
 101
 102         selector_frame.set_name ("ConnectionEditorFrame");
 103         port_frame.set_name ("ConnectionEditorFrame");
 104
 105         selector_frame.set_label (_("Available Ports"));
 106
 107         selector_button_box.set_spacing (5);
 108         selector_button_box.set_border_width (5);
 109         Gtkmm2ext::set_size_request_to_display_given_text (rescan_button, _("Rescan"), 35, 15);
 110         selector_button_box.pack_start (rescan_button, false, false);
 111
 112         selector_box.set_spacing (5);
 113         selector_box.set_border_width (5);
 114         selector_box.pack_start (notebook);
 115         selector_box.pack_start (selector_button_box);
 116
 117         selector_frame.add (selector_box);
 118
 119         port_box.set_spacing (5);
 120         port_box.set_border_width (3);
 121
 122         port_button_box.set_spacing (5);
 123         port_button_box.set_border_width (2);
 124
 125         port_button_box.pack_start (add_port_button, false, false);
 126         port_and_button_box.set_border_width (5);
 127         port_and_button_box.pack_start (port_button_box, false, false);
 128         port_and_button_box.pack_start (port_box);
 129
 130         port_frame.add (port_and_button_box);
 131
 132         port_and_selector_box.set_spacing (5);
 133         port_and_selector_box.pack_start (port_frame);
 134         port_and_selector_box.pack_start (selector_frame);
 135
 136         right_vbox.set_spacing (5);
 137         right_vbox.set_border_width (5);
 138         right_vbox.pack_start (port_and_selector_box);
 139
 140         input_connection_model = ListStore::create (connection_columns);
 141         output_connection_model = ListStore::create (connection_columns);
 142
 143         input_connection_display.set_model (input_connection_model);
 144         output_connection_display.set_model (output_connection_model);
 145
 146         input_connection_display.append_column (_("Connections"), connection_columns.name);
 147         output_connection_display.append_column (_("Connections"), connection_columns.name);
 148
 149         input_connection_display.get_selection()->set_mode(Gtk::SELECTION_SINGLE);
 150         input_connection_display.set_size_request (80, -1);
 151         input_connection_display.set_name ("ConnectionEditorConnectionList");
 152
 153         output_connection_display.get_selection()->set_mode(Gtk::SELECTION_SINGLE);
 154         output_connection_display.set_size_request (80, -1);
 155         output_connection_display.set_name ("ConnectionEditorConnectionList");
 156
 157         input_connection_display.get_selection()->signal_changed().connect (bind (mem_fun(*this, &ConnectionEditor::selection_changed), &input_connection_display));
 158         output_connection_display.get_selection()->signal_changed().connect (bind (mem_fun(*this, &ConnectionEditor::selection_changed), &output_connection_display));
 159
 160
 161         input_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
 162         output_scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
 163
 164         input_scroller.add (input_connection_display);
 165         output_scroller.add (output_connection_display);
 166
 167         input_box.set_border_width (5);
 168         input_box.set_spacing (5);
 169         input_box.pack_start (input_scroller);
 170         input_box.pack_start (new_input_connection_button, false, false);
 171         input_frame.add (input_box);
 172
 173         output_box.set_border_width (5);
 174         output_box.set_spacing (5);
 175         output_box.pack_start (output_scroller);
 176         output_box.pack_start (new_output_connection_button, false, false);
 177         output_frame.add (output_box);
 178
 179         connection_box.set_spacing (5);
 180         connection_box.pack_start (input_frame);
 181         connection_box.pack_start (output_frame);
 182
 183         left_vbox.set_spacing (5);
 184         left_vbox.pack_start (connection_box);
 185
 186         main_hbox.set_border_width (10);
 187         main_hbox.set_spacing (5);
 188         main_hbox.pack_start (left_vbox);
 189         main_hbox.pack_start (right_vbox);
 190
 191         main_vbox.set_border_width (10);
 192         main_vbox.set_spacing (5);
 193         main_vbox.pack_start (main_hbox);
 194         main_vbox.pack_start (button_frame, false, false);
 195
 196         get_vbox()->pack_start (main_vbox);
 197
 198         clear_button.signal_clicked().connect (mem_fun(*this, &ConnectionEditor::clear));
 199         add_port_button.signal_clicked().connect (mem_fun(*this, &ConnectionEditor::add_port));
 200         new_input_connection_button.signal_clicked().connect (bind (mem_fun(*this, &ConnectionEditor::new_connection), true));
 201         new_output_connection_button.signal_clicked().connect (bind (mem_fun(*this, &ConnectionEditor::new_connection), false));
 202         delete_connection_button.signal_clicked().connect (mem_fun(*this, &ConnectionEditor::delete_connection));
 203 }
 204
 205 ConnectionEditor::~ConnectionEditor()
 206 {
 207 }
 208
 209 void
 210 ConnectionEditor::set_session (Session *s)
 211 {
 212         if (s != session) {
 213
 214                 ArdourDialog::set_session (s);
 215
 216                 if (session) {
 217                         session->ConnectionAdded.connect (mem_fun(*this, &ConnectionEditor::proxy_add_connection_and_select));
 218                         session->ConnectionRemoved.connect (mem_fun(*this, &ConnectionEditor::proxy_remove_connection));
 219                 } else {
 220                         hide ();
 221                 }
 222         }
 223 }
 224
 225 void
 226 ConnectionEditor::rescan ()
 227 {
 228         refill_connection_display ();
 229         display_ports ();
 230 }
 231
 232 void
 233 ConnectionEditor::cancel ()
 234 {
 235         hide ();
 236 }
 237
 238 void
 239 ConnectionEditor::accept ()
 240 {
 241         hide ();
 242 }
 243
 244 void
 245 ConnectionEditor::clear ()
 246 {
 247         if (current_connection) {
 248                 current_connection->clear ();
 249         }
 250 }
 251
 252 void
 253 ConnectionEditor::on_map ()
 254 {
 255         refill_connection_display ();
 256         Window::on_map ();
 257 }
 258
 259 void
 260 ConnectionEditor::add_connection (ARDOUR::Connection *connection)
 261 {
 262         TreeModel::Row row;
 263
 264         if (dynamic_cast<InputConnection *> (connection)) {
 265
 266                 if (push_at_front) {
 267                         row = *(input_connection_model->prepend());
 268                 } else {
 269                         row = *(input_connection_model->append());
 270                 }
 271
 272         } else {
 273
 274                 if (push_at_front) {
 275                         row = *(output_connection_model->prepend());
 276                 } else {
 277                         row = *(output_connection_model->append());
 278                 }
 279         }
 280
 281         row[connection_columns.connection] = connection;
 282         row[connection_columns.name] = connection->name();
 283 }
 284
 285 void
 286 ConnectionEditor::remove_connection (ARDOUR::Connection *connection)
 287 {
 288         TreeModel::iterator i;
 289         Glib::RefPtr<TreeModel> model = input_connection_model;
 290
 291         if (dynamic_cast<InputConnection *> (connection) == 0) {
 292                 model = output_connection_model;
 293         }
 294
 295         TreeModel::Children rows = model->children();
 296
 297         for (i = rows.begin(); i != rows.end(); ++i) {
 298                 if ((*i)[connection_columns.connection] == connection) {
 299                         // model->erase (i);
 300                         break;
 301                 }
 302         }
 303 }
 304
 305 void
 306 ConnectionEditor::proxy_add_connection_and_select (ARDOUR::Connection *connection)
 307 {
 308         Gtkmm2ext::UI::instance()->call_slot (bind (mem_fun(*this, &ConnectionEditor::add_connection_and_select), connection));
 309 }
 310
 311 void
 312 ConnectionEditor::proxy_remove_connection (ARDOUR::Connection *connection)
 313 {
 314         Gtkmm2ext::UI::instance()->call_slot (bind (mem_fun(*this, &ConnectionEditor::remove_connection), connection));
 315 }
 316
 317 void
 318 ConnectionEditor::add_connection_and_select (ARDOUR::Connection *connection)
 319 {
 320         add_connection (connection);
 321
 322         // GTK2FIX
 323         // if (dynamic_cast<InputConnection *> (connection)) {
 324         // input_connection_display.rows().front().select ();
 325         // } else {
 326         //      output_connection_display.rows().front().select ();
 327         //}
 328 }
 329
 330 void
 331 ConnectionEditor::refill_connection_display ()
 332 {
 333         input_connection_display.set_model (Glib::RefPtr<TreeModel>(0));
 334         output_connection_display.set_model (Glib::RefPtr<TreeModel>(0));
 335
 336         input_connection_model->clear();
 337         output_connection_model->clear();
 338
 339         current_connection = 0;
 340
 341         if (session) {
 342                 session->foreach_connection (this, &ConnectionEditor::add_connection);
 343         }
 344
 345         input_connection_display.set_model (input_connection_model);
 346         output_connection_display.set_model (output_connection_model);
 347
 348 }
 349
 350 void
 351 ConnectionEditor::selection_changed (TreeView* view)
 352 {
 353         ARDOUR::Connection *old_current = current_connection;
 354
 355         TreeIter iter;
 356         TreeModel::Path path;
 357         Glib::RefPtr<TreeView::Selection> selection = view->get_selection();
 358         Glib::RefPtr<TreeModel> model = view->get_model();
 359         bool input = (view == &input_connection_display);
 360
 361         iter = model->get_iter (path);
 362
 363         current_connection = (*iter)[connection_columns.connection];
 364
 365         if (old_current != current_connection) {
 366                 config_connection.disconnect ();
 367                 connect_connection.disconnect ();
 368         }
 369
 370         if (current_connection) {
 371                 config_connection = current_connection->ConfigurationChanged.connect
 372                         (bind (mem_fun(*this, &ConnectionEditor::configuration_changed), input));
 373                 connect_connection = current_connection->ConnectionsChanged.connect
 374                         (bind (mem_fun(*this, &ConnectionEditor::connections_changed), input));
 375         }
 376
 377         display_connection_state (input);
 378         display_ports ();
 379 }
 380
 381 void
 382 ConnectionEditor::configuration_changed (bool for_input)
 383 {
 384         display_connection_state (for_input);
 385 }
 386
 387 void
 388 ConnectionEditor::connections_changed (int which_port, bool for_input)
 389 {
 390         display_connection_state (for_input);
 391 }
 392
 393 void
 394 ConnectionEditor::display_ports ()
 395 {
 396         if (session == 0 || current_connection == 0) {
 397                 return;
 398         }
 399
 400         using namespace Notebook_Helpers;
 401
 402         typedef std::map<std::string,std::vector<std::pair<std::string,std::string> > > PortMap;
 403         PortMap portmap;
 404         const char **ports;
 405         PageList& pages = notebook.pages();
 406         gint current_page;
 407         vector<string> rowdata;
 408         bool for_input;
 409
 410         current_page = notebook.get_current_page ();
 411         pages.clear ();
 412
 413         /* get relevant current JACK ports */
 414
 415         for_input = (dynamic_cast<InputConnection *> (current_connection) != 0);
 416
 417         ports = session->engine().get_ports ("", JACK_DEFAULT_AUDIO_TYPE, for_input?JackPortIsOutput:JackPortIsInput);
 418
 419         if (ports == 0) {
 420                 return;
 421         }
 422
 423         /* find all the client names and group their ports into a list-by-client */
 424
 425         for (int n = 0; ports[n]; ++n) {
 426
 427                 pair<string,vector<pair<string,string> > > newpair;
 428                 pair<string,string> strpair;
 429                 pair<PortMap::iterator,bool> result;
 430
 431                 string str = ports[n];
 432                 string::size_type pos;
 433                 string portname;
 434
 435                 pos = str.find (':');
 436
 437                 newpair.first = str.substr (0, pos);
 438                 portname = str.substr (pos+1);
 439
 440                 result = portmap.insert (newpair);
 441
 442                 strpair.first = portname;
 443                 strpair.second = str;
 444
 445                 result.first->second.push_back (strpair);
 446         }
 447
 448         PortMap::iterator i;
 449
 450         for (i = portmap.begin(); i != portmap.end(); ++i) {
 451
 452                 Box *client_box = manage (new VBox);
 453                 Gtk::CTreeView *display = manage (new Gtk::TreeView);
 454                 RefPtr<TreeModel> model = TreeModel::create (columns);
 455                 ScrolledWindow *scroller = manage (new ScrolledWindow);
 456
 457                 display->set_selection_mode (GTK_SELECTION_SINGLE);
 458                 display->set_name ("ConnectionEditorList");
 459
 460                 for (vector<pair<string,string> >::iterator s = i->second.begin(); s != i->second.end(); ++s) {
 461
 462                         Row row = model->append ();
 463
 464                         row[displayed_name] = s->first;
 465                         row[full_name] = s->second;
 466                 }
 467
 468                 display->get_selection()->signal_changed().connect (bind (mem_fun(*this, &ConnectionEditor::port_selection_handler), display));
 469
 470                 Label *tab_label = manage (new Label);
 471
 472                 tab_label->set_name ("ConnectionEditorNotebookTab");
 473                 tab_label->set_text ((*i).first);
 474
 475                 display->set_model (model);
 476
 477                 scroller->add (*client_port_display);
 478                 scroller->set_policy (Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC);
 479
 480                 client_box->pack_start (*scroller);
 481
 482                 pages.push_back (TabElem (*client_box, *tab_label));
 483         }
 484
 485         notebook.set_page (current_page);
 486         notebook.show.connect (bind (mem_fun (notebook, &Notebook::set_page), current_page));
 487         selector_box.show_all ();
 488 }
 489
 490 void
 491 ConnectionEditor::display_connection_state (bool for_input)
 492 {
 493         Glib::Mutex::Lock lm  (port_display_lock);
 494         uint32_t limit;
 495
 496         if (session == 0 || current_connection == 0) {
 497                 return;
 498         }
 499
 500         string frame_label = _("Connection \"");
 501         frame_label += current_connection->name();
 502         frame_label += _("\"");
 503         port_frame.set_label (frame_label);
 504
 505         for (slist<ScrolledWindow *>::iterator i = port_displays.begin(); i != port_displays.end(); ) {
 506
 507                 slist<ScrolledWindow *>::iterator tmp;
 508
 509                 tmp = i;
 510                 tmp++;
 511
 512                 port_box.remove (**i);
 513                 delete *i;
 514                 port_displays.erase (i);
 515
 516                 i = tmp;
 517         }
 518
 519         limit = current_connection->nports();
 520
 521         for (uint32_t n = 0; n < limit; ++n) {
 522
 523                 CList *clist;
 524                 ScrolledWindow *scroller;
 525
 526                 const gchar *title[1];
 527                 char buf[32];
 528                 string really_short_name;
 529
 530                 if (for_input) {
 531                         snprintf(buf, sizeof(buf)-1, _("in %d"), n+1);
 532                 } else {
 533                         snprintf(buf, sizeof(buf)-1, _("out %d"), n+1);
 534                 }
 535
 536                 tview = manage (new TreeView());
 537                 Glib::RefPtr<ListStore> port_model = ListStore::create (*port_display_columns);
 538
 539                 tview->set_model (port_model);
 540                 tview->append_column (_(buf), port_display_columns->name);
 541                 tview->set_selection()->set_mode (Gtk::SELECTION_SINGLE);
 542                 tview->set_data ("port", (gpointer) ((intptr_t) n));
 543                 tview->set_headers_visible (true);
 544                 tview->set_name ("ConnectionEditorPortList");
 545                 tview->signal_button_press_event().connect (bind (mem_fun(*this, &ConnectionEditor::port_column_click), clist));
 546
 547                 scroller = manage (new ScrolledWindow);
 548
 549                 scroller->add (*tview);
 550                 scroller->set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
 551
 552                 port_displays.insert (port_displays.end(), scroller);
 553                 port_box.pack_start (*scroller);
 554
 555                 scroller->set_size_request (-1, 75);
 556
 557                 /* now fill the clist with the current connections */
 558
 559                 const ARDOUR::Connection::PortList& connections = current_connection->port_connections (n);
 560
 561                 for (ARDOUR::Connection::PortList::const_iterator i = connections.begin(); i != connections.end(); ++i) {
 562
 563                         TreeModel::Row row = *(model->append());
 564
 565                         row[port_connection_columns.name] = (*i)->name();
 566                 }
 567         }
 568
 569         port_box.show_all ();
 570 }
 571
 572 void
 573 ConnectionEditor::port_selection_changed (TreeView* tview)
 574 {
 575         Glib::RefPtr<TreeView::Selection> sel = tview->get_selection();
 576         TreeModel::iterator iter = sel->get_selected();
 577
 578         if (!current_connection) {
 579                 return;
 580         }
 581
 582         if (iter) {
 583                 TreeModel::Row row = *iter;
 584                 string other_port_name = row[port_display_columns.full_name];
 585
 586
 587         if (current_connection && selected_port >= 0) {
 588                 current_connection->add_connection (selected_port, other_port_name);
 589         }
 590
 591 }
 592
 593 void
 594 ConnectionEditor::add_port ()
 595 {
 596         if (current_connection) {
 597                 current_connection->add_port ();
 598         }
 599 }
 600
 601 void
 602 ConnectionEditor::connection_port_button_press_event (GdkEventButton* ev, TreeView* tview)
 603 {
 604         Glib::Mutex::Lock lm  (port_display_lock);
 605
 606         int which_port = reinterpret_cast<intptr_t> (treeview->get_data ("port"));
 607
 608         if (which_port != selected_port) {
 609
 610                 selected_port = which_port;
 611                 display_ports ();
 612
 613                 tview->set_name ("ConnectionEditorPortListSelected");
 614
 615                 for (slist<ScrolledWindow *>::iterator i = port_displays.begin(); i != port_displays.end(); ++i) {
 616
 617                         Widget *child = (*i)->get_child();
 618
 619                         if (static_cast<TreeView *> (child) != tview) {
 620                                 child->set_name ("ConnectionEditorPortList");
 621                                 child->queue_draw ();
 622                         }
 623                 }
 624
 625         } else {
 626
 627                 selected_port = -1;
 628                 clist->set_name ("ConnectionEditorPortList");
 629                 clist->queue_draw();
 630         }
 631 }
 632
 633 void
 634 ConnectionEditor::connection_selection_changed (TreeView* tview);
 635 {
 636         Glib::RefPtr<TreeView::Selection> sel = tview->get_selection();
 637         TreeModel::iterator iter = sel->get_selected();
 638
 639         if (iter) {
 640                 TreeModel::Row row = *iter;
 641                 current_connection = row[XXXX_display_columns.connection];
 642         } else {
 643                 current_connection = 0;
 644         }
 645 }
 646
 647 void
 648 ConnectionEditor::new_connection (bool for_input)
 649 {
 650         string name;
 651
 652         if (session == 0) {
 653                 return;
 654         }
 655
 656         ArdourPrompter prompter (true);
 657         prompter.set_prompt (_("Name for new connection:"));
 658         prompter.done.connect (Gtk::Main::quit.slot());
 659
 660         switch (prompter.run()) {
 661         case Gtk::RESPONSE_ACCEPT:
 662                 prompter.get_result (name);
 663                 push_at_front = true;
 664                 if (name.length()) {
 665                         if (for_input) {
 666                                 session->add_connection (new ARDOUR::InputConnection (name));
 667                         } else {
 668                                 session->add_connection (new ARDOUR::OutputConnection (name));
 669                         }
 670                 }
 671                 push_at_front = false;
 672                 break;
 673
 674         default:
 675                 break;
 676         }
 677 }
 678
 679 void
 680 ConnectionEditor::delete_connection ()
 681 {
 682         if (session && current_connection) {
 683                 session->remove_connection (current_connection);
 684                 current_connection = 0;
 685         }
 686 }
 687
 688 gint
 689 ConnectionEditor::port_button_event (GdkEventButton *ev, Treeview* treeview)
 690 {
 691         int row, col;
 692         TreeIter iter;
 693         TreeModel::Path path;
 694         TreeViewColumn* column;
 695         int cellx;
 696         int celly;
 697
 698         if (current_connection == 0) {
 699                 return false;
 700         }
 701
 702         if (!(Keyboard::is_delete_event (ev))) {
 703                 return false;
 704         }
 705
 706         if (!treeview->get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
 707                 return false;
 708         }
 709
 710         if ((iter = treeview->get_model()->get_iter (path))) {
 711                 /* path is valid */
 712
 713                 string port_name = (*iter)[columns.full_name];
 714                 int which_port = (intptr_t) treeview->get_data ("port");
 715
 716                 current_connection->remove_connection (which_port, port_name);
 717         }
 718
 719         return true;
 720 }