src/wx/screens_panel.cc

   1 /*
   2     Copyright (C) 2015-2022 Carl Hetherington <cth@carlh.net>
   3
   4     This file is part of DCP-o-matic.
   5
   6     DCP-o-matic is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     DCP-o-matic is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 */
  20
  21
  22 #include "cinema_dialog.h"
  23 #include "dcpomatic_button.h"
  24 #include "screen_dialog.h"
  25 #include "screens_panel.h"
  26 #include "wx_util.h"
  27 #include "lib/cinema.h"
  28 #include "lib/config.h"
  29 #include "lib/scope_guard.h"
  30 #include "lib/screen.h"
  31 #include "lib/timer.h"
  32
  33
  34 using std::cout;
  35 using std::list;
  36 using std::make_pair;
  37 using std::make_shared;
  38 using std::map;
  39 using std::pair;
  40 using std::shared_ptr;
  41 using std::string;
  42 using std::vector;
  43 using boost::optional;
  44 #if BOOST_VERSION >= 106100
  45 using namespace boost::placeholders;
  46 #endif
  47 using namespace dcpomatic;
  48
  49
  50 ScreensPanel::ScreensPanel (wxWindow* parent)
  51         : wxPanel (parent, wxID_ANY)
  52 {
  53         auto sizer = new wxBoxSizer (wxVERTICAL);
  54
  55         _search = new wxSearchCtrl (this, wxID_ANY, wxEmptyString, wxDefaultPosition, wxSize(200, search_ctrl_height()));
  56 #ifndef __WXGTK3__
  57         /* The cancel button seems to be strangely broken in GTK3; clicking on it twice sometimes works */
  58         _search->ShowCancelButton (true);
  59 #endif
  60         sizer->Add (_search, 0, wxBOTTOM, DCPOMATIC_SIZER_GAP);
  61
  62         auto targets = new wxBoxSizer (wxHORIZONTAL);
  63         _targets = new wxTreeListCtrl (this, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxTL_MULTIPLE | wxTL_3STATE | wxTL_NO_HEADER);
  64         _targets->AppendColumn (wxT("foo"));
  65
  66         targets->Add (_targets, 1, wxEXPAND | wxRIGHT, DCPOMATIC_SIZER_GAP);
  67
  68         add_cinemas ();
  69
  70         auto side_buttons = new wxBoxSizer (wxVERTICAL);
  71
  72         auto target_buttons = new wxBoxSizer (wxVERTICAL);
  73
  74         _add_cinema = new Button (this, _("Add Cinema..."));
  75         target_buttons->Add (_add_cinema, 1, wxEXPAND | wxBOTTOM, DCPOMATIC_BUTTON_STACK_GAP);
  76         _edit_cinema = new Button (this, _("Edit Cinema..."));
  77         target_buttons->Add (_edit_cinema, 1, wxEXPAND | wxBOTTOM, DCPOMATIC_BUTTON_STACK_GAP);
  78         _remove_cinema = new Button (this, _("Remove Cinema"));
  79         target_buttons->Add (_remove_cinema, 1, wxEXPAND | wxBOTTOM, DCPOMATIC_BUTTON_STACK_GAP);
  80         _add_screen = new Button (this, _("Add Screen..."));
  81         target_buttons->Add (_add_screen, 1, wxEXPAND | wxBOTTOM, DCPOMATIC_BUTTON_STACK_GAP);
  82         _edit_screen = new Button (this, _("Edit Screen..."));
  83         target_buttons->Add (_edit_screen, 1, wxEXPAND | wxBOTTOM, DCPOMATIC_BUTTON_STACK_GAP);
  84         _remove_screen = new Button (this, _("Remove Screen"));
  85         target_buttons->Add (_remove_screen, 1, wxEXPAND | wxBOTTOM, DCPOMATIC_BUTTON_STACK_GAP);
  86
  87         side_buttons->Add (target_buttons, 0, 0);
  88
  89         auto check_buttons = new wxBoxSizer (wxVERTICAL);
  90
  91         _check_all = new Button (this, _("Check all"));
  92         check_buttons->Add (_check_all, 1, wxEXPAND | wxBOTTOM, DCPOMATIC_BUTTON_STACK_GAP);
  93         _uncheck_all = new Button (this, _("Uncheck all"));
  94         check_buttons->Add (_uncheck_all, 1, wxEXPAND | wxBOTTOM, DCPOMATIC_BUTTON_STACK_GAP);
  95
  96         side_buttons->Add (check_buttons, 1, wxEXPAND | wxTOP, DCPOMATIC_BUTTON_STACK_GAP * 8);
  97
  98         targets->Add (side_buttons, 0, 0);
  99
 100         sizer->Add (targets, 1, wxEXPAND);
 101
 102         _search->Bind        (wxEVT_TEXT, boost::bind (&ScreensPanel::search_changed, this));
 103         _targets->Bind       (wxEVT_TREELIST_SELECTION_CHANGED, &ScreensPanel::selection_changed_shim, this);
 104         _targets->Bind       (wxEVT_TREELIST_ITEM_CHECKED, &ScreensPanel::checkbox_changed, this);
 105         _targets->Bind       (wxEVT_TREELIST_ITEM_ACTIVATED, &ScreensPanel::item_activated, this);
 106
 107         _add_cinema->Bind    (wxEVT_BUTTON, boost::bind (&ScreensPanel::add_cinema_clicked, this));
 108         _edit_cinema->Bind   (wxEVT_BUTTON, boost::bind (&ScreensPanel::edit_cinema_clicked, this));
 109         _remove_cinema->Bind (wxEVT_BUTTON, boost::bind (&ScreensPanel::remove_cinema_clicked, this));
 110
 111         _add_screen->Bind    (wxEVT_BUTTON, boost::bind (&ScreensPanel::add_screen_clicked, this));
 112         _edit_screen->Bind   (wxEVT_BUTTON, boost::bind (&ScreensPanel::edit_screen_clicked, this));
 113         _remove_screen->Bind (wxEVT_BUTTON, boost::bind (&ScreensPanel::remove_screen_clicked, this));
 114
 115         _check_all->Bind     (wxEVT_BUTTON, boost::bind(&ScreensPanel::check_all, this));
 116         _uncheck_all->Bind   (wxEVT_BUTTON, boost::bind(&ScreensPanel::uncheck_all, this));
 117
 118         SetSizer (sizer);
 119
 120         _config_connection = Config::instance()->Changed.connect(boost::bind(&ScreensPanel::config_changed, this, _1));
 121 }
 122
 123
 124 ScreensPanel::~ScreensPanel ()
 125 {
 126         _targets->Unbind (wxEVT_TREELIST_SELECTION_CHANGED, &ScreensPanel::selection_changed_shim, this);
 127         _targets->Unbind (wxEVT_TREELIST_ITEM_CHECKED, &ScreensPanel::checkbox_changed, this);
 128 }
 129
 130
 131 void
 132 ScreensPanel::check_all ()
 133 {
 134         for (auto cinema = _targets->GetFirstChild(_targets->GetRootItem()); cinema.IsOk();  cinema = _targets->GetNextSibling(cinema)) {
 135                 _targets->CheckItem(cinema, wxCHK_CHECKED);
 136                 for (auto screen = _targets->GetFirstChild(cinema); screen.IsOk(); screen = _targets->GetNextSibling(screen)) {
 137                         _targets->CheckItem(screen, wxCHK_CHECKED);
 138                         set_screen_checked(screen, true);
 139                 }
 140         }
 141 }
 142
 143
 144 void
 145 ScreensPanel::uncheck_all ()
 146 {
 147         for (auto cinema = _targets->GetFirstChild(_targets->GetRootItem()); cinema.IsOk();  cinema = _targets->GetNextSibling(cinema)) {
 148                 _targets->CheckItem(cinema, wxCHK_UNCHECKED);
 149                 for (auto screen = _targets->GetFirstChild(cinema); screen.IsOk(); screen = _targets->GetNextSibling(screen)) {
 150                         _targets->CheckItem(screen, wxCHK_UNCHECKED);
 151                         set_screen_checked(screen, false);
 152                 }
 153         }
 154 }
 155
 156
 157 void
 158 ScreensPanel::setup_sensitivity ()
 159 {
 160         bool const sc = _selected_cinemas.size() == 1;
 161         bool const ss = _selected_screens.size() == 1;
 162
 163         _edit_cinema->Enable (sc || ss);
 164         _remove_cinema->Enable (_selected_cinemas.size() >= 1);
 165
 166         _add_screen->Enable (sc || ss);
 167         _edit_screen->Enable (ss);
 168         _remove_screen->Enable (_selected_screens.size() >= 1);
 169 }
 170
 171
 172 void
 173 ScreensPanel::convert_to_lower(string& s)
 174 {
 175         transform(s.begin(), s.end(), s.begin(), ::tolower);
 176 }
 177
 178
 179 bool
 180 ScreensPanel::matches_search(shared_ptr<const Cinema> cinema, string search)
 181 {
 182         if (search.empty()) {
 183                 return true;
 184         }
 185
 186         return _collator.find(search, cinema->name);
 187 }
 188
 189
 190 optional<wxTreeListItem>
 191 ScreensPanel::add_cinema (shared_ptr<Cinema> cinema, wxTreeListItem previous)
 192 {
 193         auto const search = wx_to_std(_search->GetValue());
 194         if (!matches_search(cinema, search)) {
 195                 return {};
 196         }
 197
 198         auto id = _targets->InsertItem(_targets->GetRootItem(), previous, std_to_wx(cinema->name));
 199
 200         _item_to_cinema[id] = cinema;
 201         _cinema_to_item[cinema] = id;
 202
 203         for (auto screen: cinema->screens()) {
 204                 add_screen (cinema, screen);
 205         }
 206
 207         return id;
 208 }
 209
 210
 211 optional<wxTreeListItem>
 212 ScreensPanel::add_screen (shared_ptr<Cinema> cinema, shared_ptr<Screen> screen)
 213 {
 214         auto item = cinema_to_item(cinema);
 215         if (!item) {
 216                 return {};
 217         }
 218
 219         auto id = _targets->AppendItem(*item, std_to_wx(screen->name));
 220
 221         _item_to_screen[id] = screen;
 222         _screen_to_item[screen] = id;
 223
 224         return item;
 225 }
 226
 227
 228 void
 229 ScreensPanel::add_cinema_clicked ()
 230 {
 231         CinemaDialog dialog(GetParent(), _("Add Cinema"));
 232
 233         if (dialog.ShowModal() == wxID_OK) {
 234                 auto cinema = make_shared<Cinema>(dialog.name(), dialog.emails(), dialog.notes(), dialog.utc_offset_hour(), dialog.utc_offset_minute());
 235
 236                 auto cinemas = sorted_cinemas();
 237
 238                 try {
 239                         _ignore_cinemas_changed = true;
 240                         ScopeGuard sg = [this]() { _ignore_cinemas_changed = false; };
 241                         Config::instance()->add_cinema(cinema);
 242                 } catch (FileError& e) {
 243                         error_dialog(GetParent(), _("Could not write cinema details to the cinemas.xml file.  Check that the location of cinemas.xml is valid in DCP-o-matic's preferences."), std_to_wx(e.what()));
 244                         return;
 245                 }
 246
 247                 wxTreeListItem previous = wxTLI_FIRST;
 248                 bool found = false;
 249                 auto const search = wx_to_std(_search->GetValue());
 250                 for (auto existing_cinema: cinemas) {
 251                         if (!matches_search(existing_cinema, search)) {
 252                                 continue;
 253                         }
 254                         if (_collator.compare(dialog.name(), existing_cinema->name) < 0) {
 255                                 /* existing_cinema should be after the one we're inserting */
 256                                 found = true;
 257                                 break;
 258                         }
 259                         auto item = cinema_to_item(existing_cinema);
 260                         DCPOMATIC_ASSERT(item);
 261                         previous = *item;
 262                 }
 263
 264                 auto item = add_cinema(cinema, found ? previous : wxTLI_LAST);
 265
 266                 if (item) {
 267                         _targets->UnselectAll ();
 268                         _targets->Select (*item);
 269                 }
 270         }
 271
 272         selection_changed ();
 273 }
 274
 275
 276 shared_ptr<Cinema>
 277 ScreensPanel::cinema_for_operation () const
 278 {
 279         if (_selected_cinemas.size() == 1) {
 280                 return _selected_cinemas[0];
 281         } else if (_selected_screens.size() == 1) {
 282                 return _selected_screens[0]->cinema;
 283         }
 284
 285         return {};
 286 }
 287
 288
 289 void
 290 ScreensPanel::edit_cinema_clicked ()
 291 {
 292         auto cinema = cinema_for_operation ();
 293         if (cinema) {
 294                 edit_cinema(cinema);
 295         }
 296 }
 297
 298
 299 void
 300 ScreensPanel::edit_cinema(shared_ptr<Cinema> cinema)
 301 {
 302         CinemaDialog dialog(
 303                 GetParent(), _("Edit cinema"), cinema->name, cinema->emails, cinema->notes, cinema->utc_offset_hour(), cinema->utc_offset_minute()
 304                 );
 305
 306         if (dialog.ShowModal() == wxID_OK) {
 307                 cinema->name = dialog.name();
 308                 cinema->emails = dialog.emails();
 309                 cinema->notes = dialog.notes();
 310                 cinema->set_utc_offset_hour(dialog.utc_offset_hour());
 311                 cinema->set_utc_offset_minute(dialog.utc_offset_minute());
 312                 notify_cinemas_changed();
 313                 auto item = cinema_to_item(cinema);
 314                 DCPOMATIC_ASSERT(item);
 315                 _targets->SetItemText (*item, std_to_wx(dialog.name()));
 316         }
 317 }
 318
 319
 320 void
 321 ScreensPanel::remove_cinema_clicked ()
 322 {
 323         if (_selected_cinemas.size() == 1) {
 324                 if (!confirm_dialog(this, wxString::Format(_("Are you sure you want to remove the cinema '%s'?"), std_to_wx(_selected_cinemas[0]->name)))) {
 325                         return;
 326                 }
 327         } else {
 328                 if (!confirm_dialog(this, wxString::Format(_("Are you sure you want to remove %d cinemas?"), int(_selected_cinemas.size())))) {
 329                         return;
 330                 }
 331         }
 332
 333         for (auto const& cinema: _selected_cinemas) {
 334                 _ignore_cinemas_changed = true;
 335                 ScopeGuard sg = [this]() { _ignore_cinemas_changed = false; };
 336                 Config::instance()->remove_cinema(cinema);
 337                 auto item = cinema_to_item(cinema);
 338                 DCPOMATIC_ASSERT(item);
 339                 _targets->DeleteItem(*item);
 340         }
 341
 342         selection_changed ();
 343 }
 344
 345
 346 void
 347 ScreensPanel::add_screen_clicked ()
 348 {
 349         auto cinema = cinema_for_operation ();
 350         if (!cinema) {
 351                 return;
 352         }
 353
 354         ScreenDialog dialog(GetParent(), _("Add Screen"));
 355
 356         if (dialog.ShowModal () != wxID_OK) {
 357                 return;
 358         }
 359
 360         for (auto screen: cinema->screens()) {
 361                 if (screen->name == dialog.name()) {
 362                         error_dialog (
 363                                 GetParent(),
 364                                 wxString::Format (
 365                                         _("You cannot add a screen called '%s' as the cinema already has a screen with this name."),
 366                                         std_to_wx(dialog.name()).data()
 367                                         )
 368                                 );
 369                         return;
 370                 }
 371         }
 372
 373         auto screen = std::make_shared<Screen>(dialog.name(), dialog.notes(), dialog.recipient(), dialog.recipient_file(), dialog.trusted_devices());
 374         cinema->add_screen (screen);
 375         notify_cinemas_changed();
 376
 377         auto id = add_screen (cinema, screen);
 378         if (id) {
 379                 _targets->Expand (id.get ());
 380         }
 381 }
 382
 383
 384 void
 385 ScreensPanel::edit_screen_clicked ()
 386 {
 387         if (_selected_screens.size() == 1) {
 388                 edit_screen(_selected_screens[0]);
 389         }
 390 }
 391
 392
 393 void
 394 ScreensPanel::edit_screen(shared_ptr<Screen> edit_screen)
 395 {
 396         ScreenDialog dialog(
 397                 GetParent(), _("Edit screen"),
 398                 edit_screen->name,
 399                 edit_screen->notes,
 400                 edit_screen->recipient,
 401                 edit_screen->recipient_file,
 402                 edit_screen->trusted_devices
 403                 );
 404
 405         if (dialog.ShowModal() != wxID_OK) {
 406                 return;
 407         }
 408
 409         auto cinema = edit_screen->cinema;
 410         for (auto screen: cinema->screens()) {
 411                 if (screen != edit_screen && screen->name == dialog.name()) {
 412                         error_dialog (
 413                                 GetParent(),
 414                                 wxString::Format (
 415                                         _("You cannot change this screen's name to '%s' as the cinema already has a screen with this name."),
 416                                         std_to_wx(dialog.name()).data()
 417                                         )
 418                                 );
 419                         return;
 420                 }
 421         }
 422
 423         edit_screen->name = dialog.name();
 424         edit_screen->notes = dialog.notes();
 425         edit_screen->recipient = dialog.recipient();
 426         edit_screen->recipient_file = dialog.recipient_file();
 427         edit_screen->trusted_devices = dialog.trusted_devices();
 428         notify_cinemas_changed();
 429
 430         auto item = screen_to_item(edit_screen);
 431         DCPOMATIC_ASSERT (item);
 432         _targets->SetItemText(*item, std_to_wx(dialog.name()));
 433 }
 434
 435
 436 void
 437 ScreensPanel::remove_screen_clicked ()
 438 {
 439         if (_selected_screens.size() == 1) {
 440                 if (!confirm_dialog(this, wxString::Format(_("Are you sure you want to remove the screen '%s'?"), std_to_wx(_selected_screens[0]->name)))) {
 441                         return;
 442                 }
 443         } else {
 444                 if (!confirm_dialog(this, wxString::Format(_("Are you sure you want to remove %d screens?"), int(_selected_screens.size())))) {
 445                         return;
 446                 }
 447         }
 448
 449         for (auto const& screen: _selected_screens) {
 450                 screen->cinema->remove_screen(screen);
 451                 auto item = screen_to_item(screen);
 452                 DCPOMATIC_ASSERT(item);
 453                 _targets->DeleteItem(*item);
 454         }
 455
 456         /* This is called by the signal on Linux, but not it seems on Windows, so we call it ourselves
 457          * as well.
 458          */
 459         selection_changed();
 460         notify_cinemas_changed();
 461 }
 462
 463
 464 vector<shared_ptr<Screen>>
 465 ScreensPanel::screens () const
 466 {
 467         vector<shared_ptr<Screen>> output;
 468         std::copy (_checked_screens.begin(), _checked_screens.end(), std::back_inserter(output));
 469         return output;
 470 }
 471
 472
 473 void
 474 ScreensPanel::selection_changed_shim (wxTreeListEvent &)
 475 {
 476         selection_changed ();
 477 }
 478
 479
 480 void
 481 ScreensPanel::selection_changed ()
 482 {
 483         if (_ignore_selection_change) {
 484                 return;
 485         }
 486
 487         wxTreeListItems selection;
 488         _targets->GetSelections (selection);
 489
 490         _selected_cinemas.clear ();
 491         _selected_screens.clear ();
 492
 493         for (size_t i = 0; i < selection.size(); ++i) {
 494                 if (auto cinema = item_to_cinema(selection[i])) {
 495                         _selected_cinemas.push_back(cinema);
 496                 }
 497                 if (auto screen = item_to_screen(selection[i])) {
 498                         _selected_screens.push_back(screen);
 499                 }
 500         }
 501
 502         setup_sensitivity ();
 503 }
 504
 505
 506 list<shared_ptr<Cinema>>
 507 ScreensPanel::sorted_cinemas() const
 508 {
 509         auto cinemas = Config::instance()->cinemas();
 510
 511         cinemas.sort(
 512                 [this](shared_ptr<Cinema> a, shared_ptr<Cinema> b) { return _collator.compare(a->name, b->name) < 0; }
 513                 );
 514
 515         return cinemas;
 516 }
 517
 518
 519 void
 520 ScreensPanel::add_cinemas ()
 521 {
 522         for (auto cinema: sorted_cinemas()) {
 523                 add_cinema (cinema, wxTLI_LAST);
 524         }
 525 }
 526
 527
 528 void
 529 ScreensPanel::clear_and_re_add()
 530 {
 531         _targets->DeleteAllItems ();
 532
 533         _item_to_cinema.clear ();
 534         _cinema_to_item.clear ();
 535         _item_to_screen.clear ();
 536         _screen_to_item.clear ();
 537
 538         add_cinemas ();
 539 }
 540
 541
 542 void
 543 ScreensPanel::search_changed ()
 544 {
 545         clear_and_re_add();
 546
 547         _ignore_selection_change = true;
 548
 549         for (auto const& selection: _selected_cinemas) {
 550                 if (auto item = cinema_to_item(selection)) {
 551                         _targets->Select (*item);
 552                 }
 553         }
 554
 555         for (auto const& selection: _selected_screens) {
 556                 if (auto item = screen_to_item(selection)) {
 557                         _targets->Select (*item);
 558                 }
 559         }
 560
 561         _ignore_selection_change = false;
 562
 563         _ignore_check_change = true;
 564
 565         for (auto const& checked: _checked_screens) {
 566                 if (auto item = screen_to_item(checked)) {
 567                         _targets->CheckItem(*item, wxCHK_CHECKED);
 568                         setup_cinema_checked_state(*item);
 569                 }
 570         }
 571
 572         _ignore_check_change = false;
 573 }
 574
 575
 576 void
 577 ScreensPanel::set_screen_checked (wxTreeListItem item, bool checked)
 578 {
 579         auto screen = item_to_screen(item);
 580         DCPOMATIC_ASSERT(screen);
 581         if (checked) {
 582                 _checked_screens.insert(screen);
 583         } else {
 584                 _checked_screens.erase(screen);
 585         }
 586 }
 587
 588
 589 void
 590 ScreensPanel::setup_cinema_checked_state (wxTreeListItem screen)
 591 {
 592         auto cinema = _targets->GetItemParent(screen);
 593         DCPOMATIC_ASSERT (cinema.IsOk());
 594         int checked = 0;
 595         int unchecked = 0;
 596         for (auto child = _targets->GetFirstChild(cinema); child.IsOk(); child = _targets->GetNextSibling(child)) {
 597                 if (_targets->GetCheckedState(child) == wxCHK_CHECKED) {
 598                     ++checked;
 599                 } else {
 600                     ++unchecked;
 601                 }
 602         }
 603         if (checked == 0) {
 604                 _targets->CheckItem(cinema, wxCHK_UNCHECKED);
 605         } else if (unchecked == 0) {
 606                 _targets->CheckItem(cinema, wxCHK_CHECKED);
 607         } else {
 608                 _targets->CheckItem(cinema, wxCHK_UNDETERMINED);
 609         }
 610 }
 611
 612
 613 void
 614 ScreensPanel::checkbox_changed (wxTreeListEvent& ev)
 615 {
 616         if (_ignore_check_change) {
 617                 return;
 618         }
 619
 620         if (item_to_cinema(ev.GetItem())) {
 621                 /* Cinema: check/uncheck all children */
 622                 auto const checked = _targets->GetCheckedState(ev.GetItem());
 623                 for (auto child = _targets->GetFirstChild(ev.GetItem()); child.IsOk(); child = _targets->GetNextSibling(child)) {
 624                         _targets->CheckItem(child, checked);
 625                         set_screen_checked(child, checked);
 626                 }
 627         } else {
 628                 set_screen_checked(ev.GetItem(), _targets->GetCheckedState(ev.GetItem()));
 629                 setup_cinema_checked_state(ev.GetItem());
 630         }
 631
 632         ScreensChanged ();
 633 }
 634
 635
 636 shared_ptr<Cinema>
 637 ScreensPanel::item_to_cinema (wxTreeListItem item) const
 638 {
 639         auto iter = _item_to_cinema.find (item);
 640         if (iter == _item_to_cinema.end()) {
 641                 return {};
 642         }
 643
 644         return iter->second;
 645 }
 646
 647
 648 shared_ptr<Screen>
 649 ScreensPanel::item_to_screen (wxTreeListItem item) const
 650 {
 651         auto iter = _item_to_screen.find (item);
 652         if (iter == _item_to_screen.end()) {
 653                 return {};
 654         }
 655
 656         return iter->second;
 657 }
 658
 659
 660 optional<wxTreeListItem>
 661 ScreensPanel::cinema_to_item (shared_ptr<Cinema> cinema) const
 662 {
 663         auto iter = _cinema_to_item.find (cinema);
 664         if (iter == _cinema_to_item.end()) {
 665                 return {};
 666         }
 667
 668         return iter->second;
 669 }
 670
 671
 672 optional<wxTreeListItem>
 673 ScreensPanel::screen_to_item (shared_ptr<Screen> screen) const
 674 {
 675         auto iter = _screen_to_item.find (screen);
 676         if (iter == _screen_to_item.end()) {
 677                 return {};
 678         }
 679
 680         return iter->second;
 681 }
 682
 683
 684 bool
 685 ScreensPanel::notify_cinemas_changed()
 686 {
 687         _ignore_cinemas_changed = true;
 688         ScopeGuard sg = [this]() { _ignore_cinemas_changed = false; };
 689
 690         try {
 691                 Config::instance()->changed(Config::CINEMAS);
 692         } catch (FileError& e) {
 693                 error_dialog(GetParent(), _("Could not write cinema details to the cinemas.xml file.  Check that the location of cinemas.xml is valid in DCP-o-matic's preferences."), std_to_wx(e.what()));
 694                 return false;
 695         }
 696
 697         return true;
 698 }
 699
 700
 701 void
 702 ScreensPanel::config_changed(Config::Property property)
 703 {
 704         if (property == Config::Property::CINEMAS && !_ignore_cinemas_changed) {
 705                 clear_and_re_add();
 706         }
 707 }
 708
 709
 710 void
 711 ScreensPanel::item_activated(wxTreeListEvent& ev)
 712 {
 713         auto iter = _item_to_cinema.find(ev.GetItem());
 714         if (iter != _item_to_cinema.end()) {
 715                 edit_cinema(iter->second);
 716         } else {
 717                 auto iter = _item_to_screen.find(ev.GetItem());
 718                 if (iter != _item_to_screen.end()) {
 719                         edit_screen(iter->second);
 720                 }
 721         }
 722 }
 723
 724