gtk2_ardour/io_selector.cc

   1 /*
   2     Copyright (C) 2002-2003 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
  23 #include <sigc++/bind.h>
  24
  25 #include <gtkmm/messagedialog.h>
  26
  27 #include <glibmm/thread.h>
  28
  29 #include <ardour/io.h>
  30 #include <ardour/route.h>
  31 #include <ardour/audioengine.h>
  32 #include <ardour/port.h>
  33 #include <ardour/insert.h>
  34 #include <ardour/session.h>
  35 #include <ardour/audio_diskstream.h>
  36
  37 #include <gtkmm2ext/doi.h>
  38 #include <gtkmm2ext/gtk_ui.h>
  39 #include <gtkmm2ext/utils.h>
  40
  41 #include "utils.h"
  42 #include "io_selector.h"
  43 #include "keyboard.h"
  44 #include "gui_thread.h"
  45
  46 #include "i18n.h"
  47
  48 using namespace std;
  49 using namespace Gtk;
  50 using namespace Glib;
  51 using namespace sigc;
  52 using namespace ARDOUR;
  53 using namespace PBD;
  54 using namespace Gtkmm2ext;
  55
  56 IOSelectorWindow::IOSelectorWindow (Session& sess, boost::shared_ptr<IO> ior, bool input, bool can_cancel)
  57         : ArdourDialog ("i/o selector"),
  58           _selector (sess, ior, input),
  59           ok_button (can_cancel ? _("OK"): _("Close")),
  60           cancel_button (_("Cancel")),
  61           rescan_button (_("Rescan"))
  62
  63 {
  64         add_events (Gdk::KEY_PRESS_MASK|Gdk::KEY_RELEASE_MASK);
  65         set_name ("IOSelectorWindow");
  66
  67         string title;
  68         if (input) {
  69                 title = string_compose(_("%1 input"), ior->name());
  70         } else {
  71                 title = string_compose(_("%1 output"), ior->name());
  72         }
  73
  74         ok_button.set_name ("IOSelectorButton");
  75         cancel_button.set_name ("IOSelectorButton");
  76         rescan_button.set_name ("IOSelectorButton");
  77
  78         button_box.set_spacing (5);
  79         button_box.set_border_width (5);
  80         button_box.set_homogeneous (true);
  81         button_box.pack_start (rescan_button);
  82
  83         if (can_cancel) {
  84                 button_box.pack_start (cancel_button);
  85         } else {
  86                 cancel_button.hide();
  87         }
  88
  89         button_box.pack_start (ok_button);
  90
  91         get_vbox()->pack_start (_selector);
  92         get_vbox()->pack_start (button_box, false, false);
  93
  94         ok_button.signal_clicked().connect (mem_fun(*this, &IOSelectorWindow::accept));
  95         cancel_button.signal_clicked().connect (mem_fun(*this, &IOSelectorWindow::cancel));
  96         rescan_button.signal_clicked().connect (mem_fun(*this, &IOSelectorWindow::rescan));
  97
  98         set_title (title);
  99         set_position (WIN_POS_MOUSE);
 100
 101         signal_delete_event().connect (bind (sigc::ptr_fun (just_hide_it), reinterpret_cast<Window *> (this)));
 102 }
 103
 104 IOSelectorWindow::~IOSelectorWindow()
 105 {
 106 }
 107
 108 void
 109 IOSelectorWindow::rescan ()
 110 {
 111         _selector.redisplay ();
 112 }
 113
 114 void
 115 IOSelectorWindow::cancel ()
 116 {
 117         _selector.Finished(IOSelector::Cancelled);
 118         hide ();
 119 }
 120
 121 void
 122 IOSelectorWindow::accept ()
 123 {
 124         _selector.Finished(IOSelector::Accepted);
 125         hide ();
 126 }
 127
 128 void
 129 IOSelectorWindow::on_map ()
 130 {
 131         _selector.redisplay ();
 132         Window::on_map ();
 133 }
 134
 135 /*************************
 136   The IO Selector "widget"
 137  *************************/
 138
 139 IOSelector::IOSelector (Session& sess, boost::shared_ptr<IO> ior, bool input)
 140         : session (sess),
 141           io (ior),
 142           for_input (input),
 143           port_frame (for_input? _("Inputs") : _("Outputs")),
 144           add_port_button (for_input? _("Add Input") : _("Add Output")),
 145           remove_port_button (for_input? _("Remove Input") : _("Remove Output")),
 146           clear_connections_button (_("Disconnect All"))
 147 {
 148         selected_port = 0;
 149
 150         notebook.set_name ("IOSelectorNotebook");
 151         notebook.set_size_request (-1, 125);
 152
 153         clear_connections_button.set_name ("IOSelectorButton");
 154         add_port_button.set_name ("IOSelectorButton");
 155         remove_port_button.set_name ("IOSelectorButton");
 156
 157         selector_frame.set_name ("IOSelectorFrame");
 158         port_frame.set_name ("IOSelectorFrame");
 159
 160         selector_frame.set_label (_("Available connections"));
 161
 162         selector_button_box.set_spacing (5);
 163         selector_button_box.set_border_width (5);
 164
 165         selector_box.set_spacing (5);
 166         selector_box.set_border_width (5);
 167         selector_box.pack_start (notebook);
 168         selector_box.pack_start (selector_button_box, false, false);
 169
 170         selector_frame.add (selector_box);
 171
 172         port_box.set_spacing (5);
 173         port_box.set_border_width (5);
 174
 175         port_display_scroller.set_name ("IOSelectorNotebook");
 176         port_display_scroller.set_border_width (0);
 177         port_display_scroller.set_size_request (-1, 170);
 178         port_display_scroller.add (port_box);
 179         port_display_scroller.set_policy (POLICY_NEVER,
 180                                           POLICY_AUTOMATIC);
 181
 182         port_button_box.set_spacing (5);
 183         port_button_box.set_border_width (5);
 184
 185         port_button_box.pack_start (add_port_button, false, false);
 186         port_button_box.pack_start (remove_port_button, false, false);
 187         port_button_box.pack_start (clear_connections_button, false, false);
 188
 189         port_and_button_box.set_border_width (5);
 190         port_and_button_box.pack_start (port_button_box, false, false);
 191         port_and_button_box.pack_start (port_display_scroller);
 192
 193         port_frame.add (port_and_button_box);
 194
 195         port_and_selector_box.set_spacing (5);
 196         port_and_selector_box.pack_start (port_frame);
 197         port_and_selector_box.pack_start (selector_frame);
 198
 199         set_spacing (5);
 200         set_border_width (5);
 201         pack_start (port_and_selector_box);
 202
 203         rescan();
 204         display_ports ();
 205
 206         clear_connections_button.signal_clicked().connect (mem_fun(*this, &IOSelector::clear_connections));
 207
 208         add_port_button.signal_clicked().connect (mem_fun(*this, &IOSelector::add_port));
 209         remove_port_button.signal_clicked().connect (mem_fun(*this, &IOSelector::remove_port));
 210
 211         if (for_input) {
 212                 io->input_changed.connect (mem_fun(*this, &IOSelector::ports_changed));
 213         } else {
 214                 io->output_changed.connect (mem_fun(*this, &IOSelector::ports_changed));
 215         }
 216
 217         set_button_sensitivity ();
 218
 219         io->name_changed.connect (mem_fun(*this, &IOSelector::name_changed));
 220 }
 221
 222 IOSelector::~IOSelector ()
 223 {
 224 }
 225
 226 void
 227 IOSelector::set_button_sensitivity ()
 228 {
 229         if (for_input) {
 230
 231                 if (io->input_maximum() < 0 || io->input_maximum() > (int) io->n_inputs()) {
 232                         add_port_button.set_sensitive (true);
 233                 } else {
 234                         add_port_button.set_sensitive (false);
 235                 }
 236
 237         } else {
 238
 239                 if (io->output_maximum() < 0 || io->output_maximum() > (int) io->n_outputs()) {
 240                         add_port_button.set_sensitive (true);
 241                 } else {
 242                         add_port_button.set_sensitive (false);
 243                 }
 244
 245         }
 246
 247         if (for_input) {
 248                 if (io->n_inputs() && (io->input_minimum() < 0 || io->input_minimum() < (int) io->n_inputs())) {
 249                         remove_port_button.set_sensitive (true);
 250                 } else {
 251                         remove_port_button.set_sensitive (false);
 252                 }
 253
 254         } else {
 255                 if (io->n_outputs() && (io->output_minimum() < 0 || io->output_minimum() < (int) io->n_outputs())) {
 256                         remove_port_button.set_sensitive (true);
 257                 } else {
 258                         remove_port_button.set_sensitive (false);
 259                 }
 260         }
 261 }
 262
 263
 264 void
 265 IOSelector::name_changed (void* src)
 266 {
 267         ENSURE_GUI_THREAD(bind (mem_fun(*this, &IOSelector::name_changed), src));
 268
 269         display_ports ();
 270 }
 271
 272 void
 273 IOSelector::clear_connections ()
 274 {
 275         if (for_input) {
 276                 io->disconnect_inputs (this);
 277         } else {
 278                 io->disconnect_outputs (this);
 279         }
 280 }
 281
 282 void
 283 IOSelector::rescan ()
 284 {
 285         using namespace Notebook_Helpers;
 286
 287         typedef std::map<string,vector<pair<string,string> > > PortMap;
 288         PortMap portmap;
 289         const char **ports;
 290         PageList& pages = notebook.pages();
 291         gint current_page;
 292         vector<string> rowdata;
 293
 294         page_selection_connection.disconnect ();
 295
 296         current_page = notebook.get_current_page ();
 297
 298         pages.clear ();
 299
 300         /* get relevant current JACK ports */
 301
 302         ports = session.engine().get_ports ("", JACK_DEFAULT_AUDIO_TYPE, for_input ? JackPortIsOutput : JackPortIsInput);
 303
 304         if (ports == 0) {
 305                 return;
 306         }
 307
 308         /* find all the client names and group their ports into a list-by-client */
 309
 310         for (int n = 0; ports[n]; ++n) {
 311
 312                 pair<string,vector<pair<string,string> > > newpair;
 313                 pair<string,string> strpair;
 314                 pair<PortMap::iterator,bool> result;
 315
 316                 string str = ports[n];
 317                 string::size_type pos;
 318                 string portname;
 319
 320                 pos = str.find (':');
 321
 322                 newpair.first = str.substr (0, pos);
 323                 portname = str.substr (pos+1);
 324
 325                 result = portmap.insert (newpair);
 326
 327                 strpair.first = portname;
 328                 strpair.second = str;
 329
 330                 result.first->second.push_back (strpair);
 331         }
 332
 333         PortMap::iterator i;
 334
 335         for (i = portmap.begin(); i != portmap.end(); ++i) {
 336
 337                 Box *client_box = manage (new VBox);
 338                 TreeView *display = manage (new TreeView);
 339                 RefPtr<ListStore> model = ListStore::create (port_display_columns);
 340                 ScrolledWindow *scroller = manage (new ScrolledWindow);
 341
 342                 display->set_model (model);
 343                 display->append_column (X_("notvisible"), port_display_columns.displayed_name);
 344                 display->set_headers_visible (false);
 345                 display->get_selection()->set_mode (SELECTION_SINGLE);
 346                 display->set_name ("IOSelectorList");
 347
 348                 for (vector<pair<string,string> >::iterator s = i->second.begin(); s != i->second.end(); ++s) {
 349
 350                         TreeModel::Row row = *(model->append ());
 351
 352                         row[port_display_columns.displayed_name] = s->first;
 353                         row[port_display_columns.full_name] = s->second;
 354                 }
 355
 356                 display->signal_button_release_event().connect (bind (mem_fun(*this, &IOSelector::port_selection_changed), display));
 357                 Label *tab_label = manage (new Label);
 358
 359                 tab_label->set_name ("IOSelectorNotebookTab");
 360                 tab_label->set_text ((*i).first);
 361
 362                 scroller->add (*display);
 363                 scroller->set_policy (POLICY_AUTOMATIC, POLICY_AUTOMATIC);
 364
 365                 client_box->pack_start (*scroller);
 366
 367                 pages.push_back (TabElem (*client_box, *tab_label));
 368         }
 369
 370         notebook.set_current_page (current_page);
 371         page_selection_connection = notebook.signal_show().connect (bind (mem_fun (notebook, &Notebook::set_current_page), current_page));
 372         selector_box.show_all ();
 373 }
 374
 375 void
 376 IOSelector::display_ports ()
 377 {
 378         TreeView *firsttview = 0;
 379         TreeView *selected_port_tview = 0;
 380         {
 381                 Glib::Mutex::Lock lm  (port_display_lock);
 382                 Port *port;
 383                 uint32_t limit;
 384
 385                 if (for_input) {
 386                         limit = io->n_inputs();
 387                 } else {
 388                         limit = io->n_outputs();
 389                 }
 390
 391                 for (slist<TreeView *>::iterator i = port_displays.begin(); i != port_displays.end(); ) {
 392
 393                         slist<TreeView *>::iterator tmp;
 394
 395                         tmp = i;
 396                         ++tmp;
 397
 398                         port_box.remove (**i);
 399                         delete *i;
 400                         port_displays.erase (i);
 401
 402                         i = tmp;
 403                 }
 404
 405                 for (uint32_t n = 0; n < limit; ++n) {
 406
 407                         TreeView* tview;
 408                         //ScrolledWindow *scroller;
 409                         string really_short_name;
 410
 411                         if (for_input) {
 412                                 port = io->input (n);
 413                         } else {
 414                                 port = io->output (n);
 415                         }
 416
 417                         /* we know there is '/' because we put it there */
 418
 419                         really_short_name = port->short_name();
 420                         really_short_name = really_short_name.substr (really_short_name.find ('/') + 1);
 421
 422                         tview = manage (new TreeView());
 423                         RefPtr<ListStore> port_model = ListStore::create (port_display_columns);
 424
 425                         if (!firsttview) {
 426                                 firsttview = tview;
 427                         }
 428
 429                         tview->set_model (port_model);
 430                         tview->append_column (really_short_name, port_display_columns.displayed_name);
 431                         tview->get_selection()->set_mode (SELECTION_SINGLE);
 432                         tview->set_data (X_("port"), port);
 433                         tview->set_headers_visible (true);
 434                         tview->set_name (X_("IOSelectorPortList"));
 435
 436                         port_box.pack_start (*tview);
 437                         port_displays.insert (port_displays.end(), tview);
 438
 439                         /* now fill the clist with the current connections */
 440
 441                         const char **connections = port->get_connections ();
 442
 443                         if (connections) {
 444                                 for (uint32_t c = 0; connections[c]; ++c) {
 445                                         TreeModel::Row row = *(port_model->append());
 446                                         row[port_display_columns.displayed_name] = connections[c];
 447                                         row[port_display_columns.full_name] = connections[c];
 448                                 }
 449                         }
 450
 451                         if (for_input) {
 452
 453                                 if (io->input_maximum() == 1) {
 454                                         selected_port = port;
 455                                         selected_port_tview = tview;
 456                                 } else {
 457                                         if (port == selected_port) {
 458                                                 selected_port_tview = tview;
 459                                         }
 460                                 }
 461
 462                         } else {
 463
 464                                 if (io->output_maximum() == 1) {
 465                                         selected_port = port;
 466                                         selected_port_tview = tview;
 467                                 } else {
 468                                         if (port == selected_port) {
 469                                                 selected_port_tview = tview;
 470                                         }
 471                                 }
 472                         }
 473
 474                         TreeViewColumn* col = tview->get_column (0);
 475
 476                         col->set_clickable (true);
 477
 478                         /* handle button events on the column header ... */
 479                         col->signal_clicked().connect (bind (mem_fun(*this, &IOSelector::select_treeview), tview));
 480
 481                         /* ... and within the treeview itself */
 482                         tview->signal_button_release_event().connect (bind (mem_fun(*this, &IOSelector::connection_button_release), tview));
 483                 }
 484
 485                 port_box.show_all ();
 486         }
 487
 488         if (!selected_port_tview) {
 489                 selected_port_tview = firsttview;
 490         }
 491
 492         if (selected_port_tview) {
 493                 select_treeview (selected_port_tview);
 494         }
 495 }
 496
 497 bool
 498 IOSelector::port_selection_changed (GdkEventButton *ev, TreeView* treeview)
 499 {
 500         TreeModel::iterator i = treeview->get_selection()->get_selected();
 501         int status;
 502
 503         if (!i) {
 504                 return 0;
 505         }
 506
 507         if (selected_port == 0) {
 508                 return 0;
 509         }
 510
 511         ustring other_port_name = (*i)[port_display_columns.full_name];
 512
 513         if (for_input) {
 514                 if ((status = io->connect_input (selected_port, other_port_name, this)) == 0) {
 515                         Port *p = session.engine().get_port_by_name (other_port_name);
 516                         p->enable_metering();
 517                 }
 518         } else {
 519                 status = io->connect_output (selected_port, other_port_name, this);
 520         }
 521
 522         if (status == 0) {
 523                 select_next_treeview ();
 524         }
 525
 526         treeview->get_selection()->unselect_all();
 527         return 0;
 528 }
 529
 530 void
 531 IOSelector::ports_changed (IOChange change, void *src)
 532 {
 533         ENSURE_GUI_THREAD(bind (mem_fun(*this, &IOSelector::ports_changed), change, src));
 534
 535         display_ports ();
 536 }
 537
 538 void
 539 IOSelector::add_port ()
 540 {
 541         /* add a new port, then hide the button if we're up to the maximum allowed */
 542
 543         if (for_input) {
 544
 545                 try {
 546                         io->add_input_port ("", this);
 547                 }
 548
 549                 catch (AudioEngine::PortRegistrationFailure& err) {
 550                         MessageDialog msg (_("There are no more JACK ports available."));
 551                         msg.run ();
 552                 }
 553
 554         } else {
 555
 556                 try {
 557                         io->add_output_port ("", this);
 558                 }
 559
 560                 catch (AudioEngine::PortRegistrationFailure& err) {
 561                         MessageDialog msg (_("There are no more JACK ports available."));
 562                         msg.run ();
 563                 }
 564         }
 565
 566         set_button_sensitivity ();
 567 }
 568
 569 void
 570 IOSelector::remove_port ()
 571 {
 572         uint32_t nports;
 573
 574         // always remove last port
 575
 576         if (for_input) {
 577                 if ((nports = io->n_inputs()) > 0) {
 578                         io->remove_input_port (io->input(nports-1), this);
 579                 }
 580
 581         } else {
 582                 if ((nports = io->n_outputs()) > 0) {
 583                         io->remove_output_port (io->output(nports-1), this);
 584                 }
 585         }
 586
 587         set_button_sensitivity ();
 588 }
 589
 590 gint
 591 IOSelector::connection_button_release (GdkEventButton *ev, TreeView *treeview)
 592 {
 593         /* this handles button release on a port name row: i.e. a connection
 594            between the named port and the port represented by the treeview.
 595         */
 596
 597         Gtk::TreeModel::iterator iter;
 598         TreeModel::Path path;
 599         TreeViewColumn* column;
 600         int cellx;
 601         int celly;
 602
 603         /* only handle button1 events here */
 604
 605         if (ev->button != 1) {
 606                 return false;
 607         }
 608
 609         if (!treeview->get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
 610                 return false;
 611         }
 612
 613         if ((iter = treeview->get_model()->get_iter (path.to_string()))) {
 614
 615                 /* path is valid */
 616                 ustring connected_port_name = (*iter)[port_display_columns.full_name];
 617                 Port *port = reinterpret_cast<Port *> (treeview->get_data (X_("port")));
 618
 619                 if (for_input) {
 620                         Port *p = session.engine().get_port_by_name (connected_port_name);
 621                         p->disable_metering();
 622                         io->disconnect_input (port, connected_port_name, this);
 623                 } else {
 624                         io->disconnect_output (port, connected_port_name, this);
 625                 }
 626         }
 627
 628         return true;
 629 }
 630
 631 void
 632 IOSelector::select_next_treeview ()
 633 {
 634         slist<TreeView*>::iterator next;
 635
 636         if (port_displays.empty() || port_displays.size() == 1) {
 637                 return;
 638         }
 639
 640         for (slist<TreeView *>::iterator i = port_displays.begin(); i != port_displays.end(); ++i) {
 641
 642                 if ((*i)->get_name() == "IOSelectorPortListSelected") {
 643
 644                         ++i;
 645
 646                         if (i == port_displays.end()) {
 647                                 select_treeview (port_displays.front());
 648                         } else {
 649                                 select_treeview (*i);
 650                         }
 651
 652                         break;
 653                 }
 654         }
 655 }
 656
 657 void
 658 IOSelector::select_treeview (TreeView* tview)
 659 {
 660         /* Gack. TreeView's don't respond visually to a change
 661            in their state, so rename them to force a style
 662            switch.
 663         */
 664
 665         Glib::Mutex::Lock lm  (port_display_lock);
 666         Port* port = reinterpret_cast<Port *> (tview->get_data (X_("port")));
 667
 668         selected_port = port;
 669
 670         tview->set_name ("IOSelectorPortListSelected");
 671         tview->queue_draw ();
 672
 673         /* ugly hack to force the column header button to change as well */
 674
 675         TreeViewColumn* col = tview->get_column (0);
 676         GtkTreeViewColumn* ccol = col->gobj();
 677
 678         if (ccol->button) {
 679                 gtk_widget_set_name (ccol->button, "IOSelectorPortListSelected");
 680                 gtk_widget_queue_draw (ccol->button);
 681         }
 682
 683         for (slist<TreeView*>::iterator i = port_displays.begin(); i != port_displays.end(); ++i) {
 684                 if (*i == tview) {
 685                         continue;
 686                 }
 687
 688                 col = (*i)->get_column (0);
 689                 ccol = col->gobj();
 690
 691                 if (ccol->button) {
 692                         gtk_widget_set_name (ccol->button, "IOSelectorPortList");
 693                         gtk_widget_queue_draw (ccol->button);
 694                 }
 695
 696                 (*i)->set_name ("IOSelectorPortList");
 697                 (*i)->queue_draw ();
 698         }
 699
 700         selector_box.show_all ();
 701 }
 702
 703 void
 704 IOSelector::redisplay ()
 705 {
 706         display_ports ();
 707
 708         if (for_input) {
 709                 if (io->input_maximum() != 0) {
 710                         rescan ();
 711                 }
 712         } else {
 713                 if (io->output_maximum() != 0) {
 714                         rescan();
 715                 }
 716         }
 717 }
 718
 719 PortInsertUI::PortInsertUI (Session& sess, boost::shared_ptr<PortInsert> pi)
 720         : input_selector (sess, pi, true),
 721           output_selector (sess, pi, false)
 722 {
 723         hbox.pack_start (output_selector, true, true);
 724         hbox.pack_start (input_selector, true, true);
 725
 726
 727         pack_start (hbox);
 728 }
 729
 730 void
 731 PortInsertUI::redisplay()
 732 {
 733
 734         input_selector.redisplay();
 735         output_selector.redisplay();
 736 }
 737
 738 void
 739 PortInsertUI::finished(IOSelector::Result r)
 740 {
 741         input_selector.Finished (r);
 742         output_selector.Finished (r);
 743 }
 744
 745
 746 PortInsertWindow::PortInsertWindow (Session& sess, boost::shared_ptr<PortInsert> pi, bool can_cancel)
 747         : ArdourDialog ("port insert dialog"),
 748           _portinsertui (sess, pi),
 749           ok_button (can_cancel ? _("OK"): _("Close")),
 750           cancel_button (_("Cancel")),
 751           rescan_button (_("Rescan"))
 752 {
 753
 754         set_name ("IOSelectorWindow");
 755         string title = _("ardour: ");
 756         title += pi->name();
 757         set_title (title);
 758
 759         ok_button.set_name ("IOSelectorButton");
 760         cancel_button.set_name ("IOSelectorButton");
 761         rescan_button.set_name ("IOSelectorButton");
 762
 763         button_box.set_spacing (5);
 764         button_box.set_border_width (5);
 765         button_box.set_homogeneous (true);
 766         button_box.pack_start (rescan_button);
 767         if (can_cancel) {
 768                 button_box.pack_start (cancel_button);
 769         }
 770         else {
 771                 cancel_button.hide();
 772         }
 773         button_box.pack_start (ok_button);
 774
 775         get_vbox()->pack_start (_portinsertui);
 776         get_vbox()->pack_start (button_box, false, false);
 777
 778         ok_button.signal_clicked().connect (mem_fun(*this, &PortInsertWindow::accept));
 779         cancel_button.signal_clicked().connect (mem_fun(*this, &PortInsertWindow::cancel));
 780         rescan_button.signal_clicked().connect (mem_fun(*this, &PortInsertWindow::rescan));
 781
 782         signal_delete_event().connect (bind (sigc::ptr_fun (just_hide_it), reinterpret_cast<Window *> (this)));
 783
 784         going_away_connection = pi->GoingAway.connect (mem_fun(*this, &PortInsertWindow::plugin_going_away));
 785 }
 786
 787 void
 788 PortInsertWindow::plugin_going_away ()
 789 {
 790         ENSURE_GUI_THREAD(mem_fun(*this, &PortInsertWindow::plugin_going_away));
 791         going_away_connection.disconnect ();
 792         delete_when_idle (this);
 793 }
 794
 795 void
 796 PortInsertWindow::on_map ()
 797 {
 798         _portinsertui.redisplay ();
 799         Window::on_map ();
 800 }
 801
 802
 803 void
 804 PortInsertWindow::rescan ()
 805 {
 806         _portinsertui.redisplay();
 807 }
 808
 809 void
 810 PortInsertWindow::cancel ()
 811 {
 812         _portinsertui.finished(IOSelector::Cancelled);
 813         hide ();
 814 }
 815
 816 void
 817 PortInsertWindow::accept ()
 818 {
 819         _portinsertui.finished(IOSelector::Accepted);
 820         hide ();
 821 }