src/tools/dcpomatic_playlist.cc

   1 /*
   2     Copyright (C) 2018-2021 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 "wx/about_dialog.h"
  23 #include "wx/content_view.h"
  24 #include "wx/dcpomatic_button.h"
  25 #include "wx/playlist_editor_config_dialog.h"
  26 #include "wx/wx_signal_manager.h"
  27 #include "wx/wx_util.h"
  28 #include "lib/config.h"
  29 #include "lib/cross.h"
  30 #include "lib/dcp_content.h"
  31 #include "lib/film.h"
  32 #include "lib/spl.h"
  33 #include "lib/spl_entry.h"
  34 #include "lib/util.h"
  35 #include <dcp/warnings.h>
  36 LIBDCP_DISABLE_WARNINGS
  37 #include <wx/imaglist.h>
  38 #include <wx/listctrl.h>
  39 #include <wx/preferences.h>
  40 #include <wx/spinctrl.h>
  41 #include <wx/wx.h>
  42 LIBDCP_ENABLE_WARNINGS
  43
  44
  45 using std::cout;
  46 using std::exception;
  47 using std::make_pair;
  48 using std::make_shared;
  49 using std::map;
  50 using std::shared_ptr;
  51 using std::string;
  52 using std::vector;
  53 using std::weak_ptr;
  54 using boost::bind;
  55 using boost::optional;
  56 using std::dynamic_pointer_cast;
  57 #if BOOST_VERSION >= 106100
  58 using namespace boost::placeholders;
  59 #endif
  60
  61
  62 class ContentDialog : public wxDialog, public ContentStore
  63 {
  64 public:
  65         ContentDialog (wxWindow* parent)
  66                 : wxDialog (parent, wxID_ANY, _("Add content"), wxDefaultPosition, wxSize(800, 640))
  67                 , _content_view (new ContentView(this))
  68         {
  69                 _content_view->update ();
  70
  71                 auto overall_sizer = new wxBoxSizer (wxVERTICAL);
  72                 SetSizer (overall_sizer);
  73
  74                 overall_sizer->Add (_content_view, 1, wxEXPAND | wxALL, DCPOMATIC_DIALOG_BORDER);
  75
  76                 auto buttons = CreateSeparatedButtonSizer (wxOK | wxCANCEL);
  77                 if (buttons) {
  78                         overall_sizer->Add (buttons, wxSizerFlags().Expand().DoubleBorder());
  79                 }
  80
  81                 overall_sizer->Layout ();
  82
  83                 _config_changed_connection = Config::instance()->Changed.connect(boost::bind(&ContentView::update, _content_view));
  84         }
  85
  86         shared_ptr<Content> selected () const
  87         {
  88                 return _content_view->selected ();
  89         }
  90
  91         shared_ptr<Content> get (string digest) const override
  92         {
  93                 return _content_view->get (digest);
  94         }
  95
  96 private:
  97         ContentView* _content_view;
  98         boost::signals2::scoped_connection _config_changed_connection;
  99 };
 100
 101
 102
 103 class PlaylistList
 104 {
 105 public:
 106         PlaylistList (wxPanel* parent, ContentStore* content_store)
 107                 : _sizer (new wxBoxSizer(wxVERTICAL))
 108                 , _content_store (content_store)
 109         {
 110                 auto label = new wxStaticText (parent, wxID_ANY, wxEmptyString);
 111                 label->SetLabelMarkup (_("<b>Playlists</b>"));
 112                 _sizer->Add (label, 0, wxTOP | wxLEFT, DCPOMATIC_SIZER_GAP * 2);
 113
 114                 _list = new wxListCtrl (
 115                         parent, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxLC_REPORT | wxLC_SINGLE_SEL
 116                         );
 117
 118                 _list->AppendColumn (_("Name"), wxLIST_FORMAT_LEFT, 840);
 119                 _list->AppendColumn (_("Length"), wxLIST_FORMAT_LEFT, 100);
 120
 121                 auto button_sizer = new wxBoxSizer (wxVERTICAL);
 122                 _new = new Button (parent, _("New"));
 123                 button_sizer->Add (_new, 0, wxEXPAND | wxBOTTOM, DCPOMATIC_BUTTON_STACK_GAP);
 124                 _delete = new Button (parent, _("Delete"));
 125                 button_sizer->Add (_delete, 0, wxEXPAND | wxBOTTOM, DCPOMATIC_BUTTON_STACK_GAP);
 126
 127                 auto list = new wxBoxSizer (wxHORIZONTAL);
 128                 list->Add (_list, 1, wxEXPAND | wxALL, DCPOMATIC_SIZER_GAP);
 129                 list->Add (button_sizer, 0, wxALL, DCPOMATIC_SIZER_GAP);
 130
 131                 _sizer->Add (list);
 132
 133                 load_playlists ();
 134
 135                 _list->Bind (wxEVT_COMMAND_LIST_ITEM_SELECTED, bind(&PlaylistList::selection_changed, this));
 136                 _list->Bind (wxEVT_COMMAND_LIST_ITEM_DESELECTED, bind(&PlaylistList::selection_changed, this));
 137                 _new->Bind (wxEVT_BUTTON, bind(&PlaylistList::new_playlist, this));
 138                 _delete->Bind (wxEVT_BUTTON, bind(&PlaylistList::delete_playlist, this));
 139         }
 140
 141         wxSizer* sizer ()
 142         {
 143                 return _sizer;
 144         }
 145
 146         shared_ptr<SignalSPL> first_playlist () const
 147         {
 148                 if (_playlists.empty()) {
 149                         return {};
 150                 }
 151
 152                 return _playlists.front ();
 153         }
 154
 155         boost::signals2::signal<void (shared_ptr<SignalSPL>)> Edit;
 156
 157 private:
 158         void add_playlist_to_view (shared_ptr<const SignalSPL> playlist)
 159         {
 160                 wxListItem item;
 161                 item.SetId (_list->GetItemCount());
 162                 long const N = _list->InsertItem (item);
 163                 _list->SetItem (N, 0, std_to_wx(playlist->name()));
 164         }
 165
 166         void add_playlist_to_model (shared_ptr<SignalSPL> playlist)
 167         {
 168                 _playlists.push_back (playlist);
 169                 playlist->NameChanged.connect (bind(&PlaylistList::name_changed, this, weak_ptr<SignalSPL>(playlist)));
 170         }
 171
 172         void name_changed (weak_ptr<SignalSPL> wp)
 173         {
 174                 auto playlist = wp.lock ();
 175                 if (!playlist) {
 176                         return;
 177                 }
 178
 179                 int N = 0;
 180                 for (auto i: _playlists) {
 181                         if (i == playlist) {
 182                                 _list->SetItem (N, 0, std_to_wx(i->name()));
 183                         }
 184                         ++N;
 185                 }
 186         }
 187
 188         void load_playlists ()
 189         {
 190                 auto path = Config::instance()->player_playlist_directory();
 191                 if (!path) {
 192                         return;
 193                 }
 194
 195                 _list->DeleteAllItems ();
 196                 _playlists.clear ();
 197                 for (auto i: boost::filesystem::directory_iterator(*path)) {
 198                         auto spl = make_shared<SignalSPL>();
 199                         try {
 200                                 spl->read (i, _content_store);
 201                                 add_playlist_to_model (spl);
 202                         } catch (...) {}
 203                 }
 204
 205                 for (auto i: _playlists) {
 206                         add_playlist_to_view (i);
 207                 }
 208         }
 209
 210         void new_playlist ()
 211         {
 212                 shared_ptr<SignalSPL> spl (new SignalSPL(wx_to_std(_("New Playlist"))));
 213                 add_playlist_to_model (spl);
 214                 add_playlist_to_view (spl);
 215                 _list->SetItemState (_list->GetItemCount() - 1, wxLIST_STATE_SELECTED, wxLIST_STATE_SELECTED);
 216         }
 217
 218         void delete_playlist ()
 219         {
 220                 long int selected = _list->GetNextItem (-1, wxLIST_NEXT_ALL, wxLIST_STATE_SELECTED);
 221                 if (selected < 0 || selected >= int(_playlists.size())) {
 222                         return;
 223                 }
 224
 225                 auto dir = Config::instance()->player_playlist_directory();
 226                 if (!dir) {
 227                         return;
 228                 }
 229
 230                 boost::filesystem::remove (*dir / (_playlists[selected]->id() + ".xml"));
 231                 _list->DeleteItem (selected);
 232                 _playlists.erase (_playlists.begin() + selected);
 233
 234                 Edit (shared_ptr<SignalSPL>());
 235         }
 236
 237         void selection_changed ()
 238         {
 239                 long int selected = _list->GetNextItem (-1, wxLIST_NEXT_ALL, wxLIST_STATE_SELECTED);
 240                 if (selected < 0 || selected >= int(_playlists.size())) {
 241                         Edit (shared_ptr<SignalSPL>());
 242                 } else {
 243                         Edit (_playlists[selected]);
 244                 }
 245         }
 246
 247         wxBoxSizer* _sizer;
 248         wxListCtrl* _list;
 249         wxButton* _new;
 250         wxButton* _delete;
 251         vector<shared_ptr<SignalSPL>> _playlists;
 252         ContentStore* _content_store;
 253 };
 254
 255
 256 class PlaylistContent
 257 {
 258 public:
 259         PlaylistContent (wxPanel* parent, ContentDialog* content_dialog)
 260                 : _content_dialog (content_dialog)
 261                 , _sizer (new wxBoxSizer(wxVERTICAL))
 262         {
 263                 auto title = new wxBoxSizer (wxHORIZONTAL);
 264                 auto label = new wxStaticText (parent, wxID_ANY, wxEmptyString);
 265                 label->SetLabelMarkup (_("<b>Playlist:</b>"));
 266                 title->Add (label, 0, wxALIGN_CENTER_VERTICAL | wxRIGHT, DCPOMATIC_SIZER_GAP);
 267                 _name = new wxTextCtrl (parent, wxID_ANY, wxEmptyString, wxDefaultPosition, wxSize(400, -1));
 268                 title->Add (_name, 0, wxRIGHT, DCPOMATIC_SIZER_GAP);
 269                 _sizer->Add (title, 0, wxTOP | wxLEFT, DCPOMATIC_SIZER_GAP * 2);
 270
 271                 auto list = new wxBoxSizer (wxHORIZONTAL);
 272
 273                 _list = new wxListCtrl (
 274                         parent, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxLC_REPORT | wxLC_SINGLE_SEL
 275                         );
 276
 277                 _list->AppendColumn (_("Name"), wxLIST_FORMAT_LEFT, 400);
 278                 _list->AppendColumn (_("CPL"), wxLIST_FORMAT_LEFT, 350);
 279                 _list->AppendColumn (_("Type"), wxLIST_FORMAT_LEFT, 100);
 280                 _list->AppendColumn (_("Encrypted"), wxLIST_FORMAT_CENTRE, 90);
 281
 282                 auto images = new wxImageList (16, 16);
 283                 wxIcon tick_icon;
 284                 wxIcon no_tick_icon;
 285                 tick_icon.LoadFile (bitmap_path("tick"), wxBITMAP_TYPE_PNG);
 286                 no_tick_icon.LoadFile (bitmap_path("no_tick"), wxBITMAP_TYPE_PNG);
 287                 images->Add (tick_icon);
 288                 images->Add (no_tick_icon);
 289
 290                 _list->SetImageList (images, wxIMAGE_LIST_SMALL);
 291
 292                 list->Add (_list, 1, wxEXPAND | wxALL, DCPOMATIC_SIZER_GAP);
 293
 294                 auto button_sizer = new wxBoxSizer (wxVERTICAL);
 295                 _up = new Button (parent, _("Up"));
 296                 _down = new Button (parent, _("Down"));
 297                 _add = new Button (parent, _("Add"));
 298                 _remove = new Button (parent, _("Remove"));
 299                 button_sizer->Add (_up, 0, wxEXPAND | wxBOTTOM, DCPOMATIC_BUTTON_STACK_GAP);
 300                 button_sizer->Add (_down, 0, wxEXPAND | wxBOTTOM, DCPOMATIC_BUTTON_STACK_GAP);
 301                 button_sizer->Add (_add, 0, wxEXPAND | wxBOTTOM, DCPOMATIC_BUTTON_STACK_GAP);
 302                 button_sizer->Add (_remove, 0, wxEXPAND | wxBOTTOM, DCPOMATIC_BUTTON_STACK_GAP);
 303
 304                 list->Add (button_sizer, 0, wxALL, DCPOMATIC_SIZER_GAP);
 305
 306                 _sizer->Add (list);
 307
 308                 _list->Bind (wxEVT_COMMAND_LIST_ITEM_SELECTED, bind(&PlaylistContent::setup_sensitivity, this));
 309                 _list->Bind (wxEVT_COMMAND_LIST_ITEM_DESELECTED, bind(&PlaylistContent::setup_sensitivity, this));
 310                 _name->Bind (wxEVT_TEXT, bind(&PlaylistContent::name_changed, this));
 311                 _up->Bind (wxEVT_BUTTON, bind(&PlaylistContent::up_clicked, this));
 312                 _down->Bind (wxEVT_BUTTON, bind(&PlaylistContent::down_clicked, this));
 313                 _add->Bind (wxEVT_BUTTON, bind(&PlaylistContent::add_clicked, this));
 314                 _remove->Bind (wxEVT_BUTTON, bind(&PlaylistContent::remove_clicked, this));
 315         }
 316
 317         wxSizer* sizer ()
 318         {
 319                 return _sizer;
 320         }
 321
 322         void set (shared_ptr<SignalSPL> playlist)
 323         {
 324                 _playlist = playlist;
 325                 _list->DeleteAllItems ();
 326                 if (_playlist) {
 327                         for (auto i: _playlist->get()) {
 328                                 add (i);
 329                         }
 330                         _name->SetValue (std_to_wx(_playlist->name()));
 331                 } else {
 332                         _name->SetValue (wxT(""));
 333                 }
 334                 setup_sensitivity ();
 335         }
 336
 337         shared_ptr<SignalSPL> playlist () const
 338         {
 339                 return _playlist;
 340         }
 341
 342
 343 private:
 344         void name_changed ()
 345         {
 346                 if (_playlist) {
 347                         _playlist->set_name (wx_to_std(_name->GetValue()));
 348                 }
 349         }
 350
 351         void add (SPLEntry e)
 352         {
 353                 wxListItem item;
 354                 item.SetId (_list->GetItemCount());
 355                 long const N = _list->InsertItem (item);
 356                 set_item (N, e);
 357         }
 358
 359         void set_item (long N, SPLEntry e)
 360         {
 361                 _list->SetItem (N, 0, std_to_wx(e.name));
 362                 _list->SetItem (N, 1, std_to_wx(e.id));
 363                 _list->SetItem (N, 2, std_to_wx(dcp::content_kind_to_string(e.kind)));
 364                 _list->SetItem (N, 3, e.encrypted ? S_("Question|Y") : S_("Question|N"));
 365         }
 366
 367         void setup_sensitivity ()
 368         {
 369                 bool const have_list = static_cast<bool>(_playlist);
 370                 int const num_selected = _list->GetSelectedItemCount ();
 371                 long int selected = _list->GetNextItem (-1, wxLIST_NEXT_ALL, wxLIST_STATE_SELECTED);
 372                 _name->Enable (have_list);
 373                 _list->Enable (have_list);
 374                 _up->Enable (have_list && selected > 0);
 375                 _down->Enable (have_list && selected != -1 && selected < (_list->GetItemCount() - 1));
 376                 _add->Enable (have_list);
 377                 _remove->Enable (have_list && num_selected > 0);
 378         }
 379
 380         void add_clicked ()
 381         {
 382                 int const r = _content_dialog->ShowModal ();
 383                 if (r == wxID_OK) {
 384                         auto content = _content_dialog->selected ();
 385                         if (content) {
 386                                 SPLEntry e (content);
 387                                 add (e);
 388                                 DCPOMATIC_ASSERT (_playlist);
 389                                 _playlist->add (e);
 390                         }
 391                 }
 392         }
 393
 394         void up_clicked ()
 395         {
 396                 long int s = _list->GetNextItem (-1, wxLIST_NEXT_ALL, wxLIST_STATE_SELECTED);
 397                 if (s < 1) {
 398                         return;
 399                 }
 400
 401                 DCPOMATIC_ASSERT (_playlist);
 402
 403                 auto tmp = (*_playlist)[s];
 404                 (*_playlist)[s] = (*_playlist)[s-1];
 405                 (*_playlist)[s-1] = tmp;
 406
 407                 set_item (s - 1, (*_playlist)[s-1]);
 408                 set_item (s, (*_playlist)[s]);
 409         }
 410
 411         void down_clicked ()
 412         {
 413                 long int s = _list->GetNextItem (-1, wxLIST_NEXT_ALL, wxLIST_STATE_SELECTED);
 414                 if (s > (_list->GetItemCount() - 1)) {
 415                         return;
 416                 }
 417
 418                 DCPOMATIC_ASSERT (_playlist);
 419
 420                 auto tmp = (*_playlist)[s];
 421                 (*_playlist)[s] = (*_playlist)[s+1];
 422                 (*_playlist)[s+1] = tmp;
 423
 424                 set_item (s + 1, (*_playlist)[s+1]);
 425                 set_item (s, (*_playlist)[s]);
 426         }
 427
 428         void remove_clicked ()
 429         {
 430                 long int s = _list->GetNextItem (-1, wxLIST_NEXT_ALL, wxLIST_STATE_SELECTED);
 431                 if (s == -1) {
 432                         return;
 433                 }
 434
 435                 DCPOMATIC_ASSERT (_playlist);
 436                 _playlist->remove (s);
 437                 _list->DeleteItem (s);
 438         }
 439
 440         ContentDialog* _content_dialog;
 441         wxBoxSizer* _sizer;
 442         wxTextCtrl* _name;
 443         wxListCtrl* _list;
 444         wxButton* _up;
 445         wxButton* _down;
 446         wxButton* _add;
 447         wxButton* _remove;
 448         shared_ptr<SignalSPL> _playlist;
 449 };
 450
 451
 452 class DOMFrame : public wxFrame
 453 {
 454 public:
 455         explicit DOMFrame (wxString const & title)
 456                 : wxFrame (nullptr, wxID_ANY, title)
 457                 , _content_dialog (new ContentDialog(this))
 458                 , _config_dialog (nullptr)
 459         {
 460                 auto bar = new wxMenuBar;
 461                 setup_menu (bar);
 462                 SetMenuBar (bar);
 463
 464                 /* Use a panel as the only child of the Frame so that we avoid
 465                    the dark-grey background on Windows.
 466                 */
 467                 auto overall_panel = new wxPanel (this, wxID_ANY);
 468                 auto sizer = new wxBoxSizer (wxVERTICAL);
 469
 470                 _playlist_list = new PlaylistList (overall_panel, _content_dialog);
 471                 _playlist_content = new PlaylistContent (overall_panel, _content_dialog);
 472
 473                 sizer->Add (_playlist_list->sizer());
 474                 sizer->Add (_playlist_content->sizer());
 475
 476                 overall_panel->SetSizer (sizer);
 477
 478                 _playlist_list->Edit.connect (bind(&DOMFrame::change_playlist, this, _1));
 479
 480                 _playlist_content->set (_playlist_list->first_playlist());
 481
 482                 Bind (wxEVT_MENU, boost::bind (&DOMFrame::file_exit, this), wxID_EXIT);
 483                 Bind (wxEVT_MENU, boost::bind (&DOMFrame::help_about, this), wxID_ABOUT);
 484                 Bind (wxEVT_MENU, boost::bind (&DOMFrame::edit_preferences, this), wxID_PREFERENCES);
 485
 486                 _config_changed_connection = Config::instance()->Changed.connect(boost::bind(&DOMFrame::config_changed, this));
 487         }
 488
 489 private:
 490
 491         void file_exit ()
 492         {
 493                 /* false here allows the close handler to veto the close request */
 494                 Close (false);
 495         }
 496
 497         void help_about ()
 498         {
 499                 auto d = new AboutDialog (this);
 500                 d->ShowModal ();
 501                 d->Destroy ();
 502         }
 503
 504         void edit_preferences ()
 505         {
 506                 if (!_config_dialog) {
 507                         _config_dialog = create_playlist_editor_config_dialog ();
 508                 }
 509                 _config_dialog->Show (this);
 510         }
 511
 512         void change_playlist (shared_ptr<SignalSPL> playlist)
 513         {
 514                 auto old = _playlist_content->playlist ();
 515                 if (old) {
 516                         save_playlist (old);
 517                 }
 518                 _playlist_content->set (playlist);
 519         }
 520
 521         void save_playlist (shared_ptr<SignalSPL> playlist)
 522         {
 523                 auto dir = Config::instance()->player_playlist_directory();
 524                 if (!dir) {
 525                         error_dialog (this, _("No playlist folder is specified in preferences.  Please set one and then try again."));
 526                         return;
 527                 }
 528                 playlist->write (*dir / (playlist->id() + ".xml"));
 529         }
 530
 531         void setup_menu (wxMenuBar* m)
 532         {
 533                 auto file = new wxMenu;
 534 #ifdef __WXOSX__
 535                 file->Append (wxID_EXIT, _("&Exit"));
 536 #else
 537                 file->Append (wxID_EXIT, _("&Quit"));
 538 #endif
 539
 540 #ifndef __WXOSX__
 541                 auto edit = new wxMenu;
 542                 edit->Append (wxID_PREFERENCES, _("&Preferences...\tCtrl-P"));
 543 #endif
 544
 545                 auto help = new wxMenu;
 546 #ifdef __WXOSX__
 547                 help->Append (wxID_ABOUT, _("About DCP-o-matic"));
 548 #else
 549                 help->Append (wxID_ABOUT, _("About"));
 550 #endif
 551
 552                 m->Append (file, _("&File"));
 553 #ifndef __WXOSX__
 554                 m->Append (edit, _("&Edit"));
 555 #endif
 556                 m->Append (help, _("&Help"));
 557         }
 558
 559
 560         void config_changed ()
 561         {
 562                 try {
 563                         Config::instance()->write_config();
 564                 } catch (exception& e) {
 565                         error_dialog (
 566                                 this,
 567                                 wxString::Format (
 568                                         _("Could not write to config file at %s.  Your changes have not been saved."),
 569                                         std_to_wx (Config::instance()->cinemas_file().string()).data()
 570                                         )
 571                                 );
 572                 }
 573         }
 574
 575         ContentDialog* _content_dialog;
 576         PlaylistList* _playlist_list;
 577         PlaylistContent* _playlist_content;
 578         wxPreferencesEditor* _config_dialog;
 579         boost::signals2::scoped_connection _config_changed_connection;
 580 };
 581
 582
 583 /** @class App
 584  *  @brief The magic App class for wxWidgets.
 585  */
 586 class App : public wxApp
 587 {
 588 public:
 589         App ()
 590                 : wxApp ()
 591                 , _frame (nullptr)
 592         {}
 593
 594 private:
 595
 596         bool OnInit () override
 597         try
 598         {
 599                 wxInitAllImageHandlers ();
 600                 SetAppName (_("DCP-o-matic Playlist Editor"));
 601
 602                 if (!wxApp::OnInit()) {
 603                         return false;
 604                 }
 605
 606 #ifdef DCPOMATIC_LINUX
 607                 unsetenv ("UBUNTU_MENUPROXY");
 608 #endif
 609
 610 #ifdef DCPOMATIC_OSX
 611                 make_foreground_application ();
 612 #endif
 613
 614                 dcpomatic_setup_path_encoding ();
 615
 616                 /* Enable i18n; this will create a Config object
 617                    to look for a force-configured language.  This Config
 618                    object will be wrong, however, because dcpomatic_setup
 619                    hasn't yet been called and there aren't any filters etc.
 620                    set up yet.
 621                 */
 622                 dcpomatic_setup_i18n ();
 623
 624                 /* Set things up, including filters etc.
 625                    which will now be internationalised correctly.
 626                 */
 627                 dcpomatic_setup ();
 628
 629                 /* Force the configuration to be re-loaded correctly next
 630                    time it is needed.
 631                 */
 632                 Config::drop ();
 633
 634                 _frame = new DOMFrame (_("DCP-o-matic Playlist Editor"));
 635                 SetTopWindow (_frame);
 636                 _frame->Maximize ();
 637                 _frame->Show ();
 638
 639                 signal_manager = new wxSignalManager (this);
 640                 Bind (wxEVT_IDLE, boost::bind (&App::idle, this));
 641
 642                 return true;
 643         }
 644         catch (exception& e)
 645         {
 646                 error_dialog (0, _("DCP-o-matic could not start"), std_to_wx(e.what()));
 647                 return true;
 648         }
 649
 650         /* An unhandled exception has occurred inside the main event loop */
 651         bool OnExceptionInMainLoop () override
 652         {
 653                 try {
 654                         throw;
 655                 } catch (FileError& e) {
 656                         error_dialog (
 657                                 0,
 658                                 wxString::Format (
 659                                         _("An exception occurred: %s (%s)\n\n") + REPORT_PROBLEM,
 660                                         std_to_wx (e.what()),
 661                                         std_to_wx (e.file().string().c_str ())
 662                                         )
 663                                 );
 664                 } catch (exception& e) {
 665                         error_dialog (
 666                                 0,
 667                                 wxString::Format (
 668                                         _("An exception occurred: %s.\n\n") + " " + REPORT_PROBLEM,
 669                                         std_to_wx (e.what ())
 670                                         )
 671                                 );
 672                 } catch (...) {
 673                         error_dialog (0, _("An unknown exception occurred.") + "  " + REPORT_PROBLEM);
 674                 }
 675
 676                 /* This will terminate the program */
 677                 return false;
 678         }
 679
 680         void OnUnhandledException () override
 681         {
 682                 error_dialog (0, _("An unknown exception occurred.") + "  " + REPORT_PROBLEM);
 683         }
 684
 685         void idle ()
 686         {
 687                 signal_manager->ui_idle ();
 688         }
 689
 690         DOMFrame* _frame;
 691 };
 692
 693 IMPLEMENT_APP (App)