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