src/mainwindow.cpp

   1 /*
   2   Copyright (c) 2006-2007 Paolo Capriotti <p.capriotti@gmail.com>
   3             (c) 2006-2007 Maurizio Monge <maurizio.monge@kdemail.net>
   4
   5   This program is free software; you can redistribute it and/or modify
   6   it under the terms of the GNU General Public License as published by
   7   the Free Software Foundation; either version 2 of the License, or
   8   (at your option) any later version.
   9 */
  10
  11 #include "mainwindow.h"
  12 #include <boost/scoped_ptr.hpp>
  13 #include <kaction.h>
  14 #include <kstandardaction.h>
  15 #include <kactioncollection.h>
  16 #include <kicon.h>
  17 #include <klocale.h>
  18 #include <kurl.h>
  19 #include <kfiledialog.h>
  20 #include <kio/netaccess.h>
  21 #include <kmessagebox.h>
  22 #include <kmenubar.h>
  23 #include <QKeySequence>
  24 #include <QStackedWidget>
  25 #include <QDockWidget>
  26 #include <QCloseEvent>
  27 #include <QTextStream>
  28 #include <QTextCodec>
  29 #include <ktabwidget.h>
  30
  31 #include "actioncollection.h"
  32 #include "chesstable.h"
  33 #include "console.h"
  34 #include "clock.h"
  35 #include "newgame.h"
  36 #include "variants.h"
  37 #include "gameinfo.h"
  38 #include "controllers/editgame.h"
  39 #include "controllers/editposition.h"
  40 #include "engineinfo.h"
  41 #include "movelist_table.h"
  42 #include "icsconnection.h"
  43 #include "qconnect.h"
  44 #include "mastersettings.h"
  45 #include "flash.h"
  46 #include "foreach.h"
  47 #include "pgnparser.h"
  48 #include "pref_highlight.h"
  49 #include "pref_preferences.h"
  50
  51 using namespace Qt;
  52 using namespace boost;
  53
  54 MainWindow::~MainWindow() {
  55   delete console;
  56   qApp->quit();
  57 }
  58
  59 MainWindow::MainWindow(const QString& variant)
  60 : KXmlGuiWindow(0) {
  61   setObjectName("tagua_main");
  62   m_main = new KTabWidget(this);
  63   setCentralWidget(m_main);
  64
  65   m_movelist_stack = new QStackedWidget;
  66
  67   connect(m_main, SIGNAL(currentChanged(int)),
  68     this, SLOT(changeTab(int)));
  69   connect(m_main, SIGNAL(closeTab()),
  70     this, SLOT(closeTab()));
  71
  72   movelist_dock = new QDockWidget(this);
  73   movelist_dock->setWidget(m_movelist_stack);
  74   movelist_dock->setWindowTitle(i18n("Move list"));
  75   movelist_dock->setObjectName("move_list");
  76   addDockWidget(Qt::LeftDockWidgetArea, movelist_dock, Qt::Vertical);
  77   movelist_dock->show();
  78
  79   ChessTable* board = new ChessTable;
  80
  81   board->setFocus();
  82
  83   console_dock = new QDockWidget(this);
  84   console = new Console(0, i18n("FICS Connection"));
  85   console_dock->setWidget(console);
  86   console_dock->setFocusProxy(console);
  87   console_dock->setWindowTitle(i18n("Console"));
  88   console_dock->setObjectName("console");
  89   addDockWidget(Qt::BottomDockWidgetArea, console_dock, Qt::Horizontal);
  90   console_dock->setWindowFlags(console_dock->windowFlags() & ~Qt::WindowStaysOnTopHint);
  91   console_dock->show();
  92
  93   connect(board, SIGNAL(error(ErrorCode)), this, SLOT(displayErrorMessage(ErrorCode)));
  94   //BROKEN connect(board->clock(), SIGNAL(labelClicked(int)), &ui(), SLOT(setTurn(int)));
  95
  96 //  start in edit game mode
  97   newGame(variant, AbstractPosition::Ptr());
  98
  99   setupActions();
 100   setupGUI();
 101   setupEngineMenu();
 102   updateVariantActions();
 103 }
 104
 105 ChessTable* MainWindow::table() {
 106   return qobject_cast<ChessTable*>(m_main->currentWidget());
 107 }
 108
 109 KAction* MainWindow::installRegularAction(const QString& name, const KIcon& icon, const QString& text, QObject* obj, const char* slot) {
 110   KAction* temp = new KAction(icon, text, this);
 111   actionCollection()->addAction(name, temp);
 112   connect(temp, SIGNAL(triggered(bool)), obj, slot);
 113   return temp;
 114 }
 115
 116 void MainWindow::setupEngineMenu() {
 117   QMenu* engine_menu = 0;
 118   SettingArray engine_settings = settings().group("engines").array("engine");
 119   foreach (Settings s, engine_settings) {
 120     if (!engine_menu) {
 121       // this way the menu is created only if there is at least one engine
 122       engine_menu = menuBar()->addMenu(i18n("E&ngines"));
 123     }
 124
 125     QString name;
 126     EngineDetails engine_details;
 127     s["name"] >> engine_details.name;
 128     s["path"] >> engine_details.path;
 129     engine_details.type = EngineDetails::typeFromName(s["type"].value<QString>());
 130     if (s["work-path"])
 131       s["work-path"] >> engine_details.workPath;
 132
 133     kDebug() << "creating engine " << engine_details.name << endl;
 134     EngineInfo* engine = new EngineInfo(engine_details, ui());
 135
 136     m_engines.push_back(engine);
 137
 138     QMenu* menu = engine_menu->addMenu(engine_details.name);
 139
 140     {
 141       KAction* play_white = new KAction(i18n("Play as &white"), this);
 142       play_white->setCheckable(true);
 143       connect(play_white, SIGNAL(triggered()), engine, SLOT(playAsWhite()));
 144       menu->addAction(play_white);
 145     }
 146     {
 147       KAction* play_black = new KAction(i18n("Play as &black"), this);
 148       play_black->setCheckable(true);
 149       connect(play_black, SIGNAL(triggered()), engine, SLOT(playAsBlack()));
 150       menu->addAction(play_black);
 151     }
 152 #if 0 // disable analysis for the moment
 153     {
 154       KAction* analyze = new KAction(i18n("&Analyze"), this);
 155       analyze->setCheckable(true);
 156       connect(analyze, SIGNAL(triggered()), engine, SLOT(analyze()));
 157       menu->addAction(analyze);
 158     }
 159 #endif
 160   }
 161 }
 162
 163 void MainWindow::setupActions() {
 164   KStandardAction::openNew(this, SLOT(newGame()), actionCollection());
 165   KStandardAction::open(this, SLOT(loadGame()), actionCollection());
 166   KStandardAction::quit(this, SLOT(quit()), actionCollection());
 167
 168   installRegularAction("back", KIcon("go-previous"), i18n("&Back"), &ui(), SLOT(back()));
 169   installRegularAction("forward", KIcon("go-next"), i18n("&Forward"), &ui(), SLOT(forward()));
 170   installRegularAction("begin", KIcon("go-first"), i18n("Be&gin"), &ui(), SLOT(gotoFirst()));
 171   installRegularAction("end", KIcon("go-last"), i18n("&End"), &ui(), SLOT(gotoLast()));
 172   installRegularAction("connect", KIcon("connection-established"), i18n("&Connect"), this, SLOT(icsConnect()));
 173   installRegularAction("disconnect", KIcon("connect-no"), i18n("&Disconnect"), this, SLOT(icsDisconnect()));
 174
 175   KStandardAction::undo(&ui(), SLOT(undo()), actionCollection());
 176   KStandardAction::redo(&ui(), SLOT(redo()), actionCollection());
 177
 178   installRegularAction("pgnCopy", KIcon("edit-copy"), i18n("Copy PGN"), this, SLOT(pgnCopy()));
 179   installRegularAction("pgnPaste", KIcon("edit-paste"), i18n("Paste PGN"), this, SLOT(pgnPaste()));
 180   installRegularAction("editPosition", KIcon("edit"), i18n("&Edit position"), this, SLOT(editPosition()));
 181   installRegularAction("clearBoard", KIcon("edit-delete"), i18n("&Clear board"), &ui(), SLOT(clearBoard()));
 182   installRegularAction("setStartingPosition", KIcon("contents"), i18n("&Set starting position"),
 183       &ui(), SLOT(setStartingPosition()));
 184   installRegularAction("copyPosition", KIcon(), i18n("&Copy position"), &ui(), SLOT(copyPosition()));
 185   installRegularAction("pastePosition", KIcon(), i18n("&Paste position"), &ui(), SLOT(pastePosition()));
 186   installRegularAction("flip", KIcon("rotate"), i18n("&Flip view"), this, SLOT(flipView()));
 187   installRegularAction("toggleConsole", KIcon("openterm"), i18n("Toggle &console"), this, SLOT(toggleConsole()));
 188   installRegularAction("toggleMoveList", KIcon("view_text"), i18n("Toggle &move list"), this, SLOT(toggleMoveList()));
 189   installRegularAction("configure", KIcon("configure"), i18n("&Configure Tagua..."), this, SLOT(preferences()));
 190 }
 191
 192 void MainWindow::updateVariantActions() {
 193   ActionCollection* variant_actions = m_ui.variantActions();
 194   unplugActionList("variantActions");
 195   plugActionList("variantActions", variant_actions->actions());
 196 }
 197
 198 void MainWindow::readSettings() { }
 199 void MainWindow::writeSettings() { }
 200
 201 void MainWindow::closeEvent(QCloseEvent* e) {
 202   e->accept();
 203   writeSettings();
 204   delete this;
 205 }
 206
 207
 208 void MainWindow::keyPressEvent(QKeyEvent* event) {
 209   if (event->key() == Qt::Key_F5) {
 210     ui().createCtrlAction();
 211   }
 212 }
 213
 214 void MainWindow::keyReleaseEvent(QKeyEvent* event) {
 215   if (event->key() == Qt::Key_F5) {
 216     ui().destroyCtrlAction();
 217   }
 218 }
 219
 220 void MainWindow::changeTab(int index) {
 221   m_ui.setCurrentTab(m_main->currentWidget());
 222   m_movelist_stack->setCurrentIndex(index);
 223   updateVariantActions();
 224 }
 225
 226 void MainWindow::closeTab() {
 227   if (m_main->count() > 1) {
 228     ChessTable* old_board = table();
 229     m_ui.removeController(old_board);
 230     m_movelist_stack->removeWidget(
 231       m_movelist_stack->widget(m_main->currentIndex()));
 232     m_main->removeTab(m_main->currentIndex());
 233
 234     delete old_board;
 235
 236     if (m_main->count() <= 1) {
 237       m_main->setTabBarHidden(true);
 238     }
 239
 240     // update ui controller (just in case...)
 241     m_ui.setCurrentTab(m_main->currentWidget());
 242   }
 243 }
 244
 245 void MainWindow::createTab(ChessTable* board, const shared_ptr<Controller>& controller,
 246                            const QString& caption, int index) {
 247   if (index == -1)
 248     index = m_main->addTab(board, caption);
 249   else
 250     m_main->insertTab(index, board, caption);
 251
 252   m_main->setCurrentIndex(index);
 253   m_ui.addController(board, controller);
 254   m_ui.setCurrentTab(board);
 255   m_movelist_stack->addWidget(board->moveListTable());
 256   m_movelist_stack->setCurrentIndex(index);
 257   if (m_main->count() > 1) m_main->setTabBarHidden(false);
 258 }
 259
 260
 261 void MainWindow::cleanupGame(const QString& what, const QString& result) {
 262   Q_UNUSED(what);
 263   Q_UNUSED(result);
 264
 265   cleanupGame();
 266 }
 267
 268 void MainWindow::cleanupGame() {
 269   ui().detach();
 270   ui().end();
 271 }
 272
 273
 274 bool MainWindow::newGame(const QString& variantName, AbstractPosition::Ptr startingPos) {
 275   VariantPtr variant = Variants::instance().get(variantName);
 276   if (!variant) {
 277     WARNING("no variant " << variantName << " found");
 278     variant = Variants::instance().get("chess");
 279   }
 280
 281   if (variant) {
 282     ChessTable* board = new ChessTable;
 283     shared_ptr<Controller> controller(new EditGameController(
 284       board, variant, startingPos));
 285     createTab(board, controller,
 286       QString("Editing %1 game").arg(variant->name().toLower()));
 287     return true;
 288   }
 289   else {
 290     ERROR("Could not find the chess variant");
 291     exit(1);
 292     return false;
 293   }
 294 }
 295
 296
 297 void MainWindow::editPosition() {
 298 //BROKEN
 299 #if 0
 300   shared_ptr<Controller> controller(new EditPositionController(table(), ChessVariant::info()));
 301   m_main->setTabText(m_main->currentIndex(), "Editing chess position");
 302   ui().setController(controller);
 303 #endif
 304 }
 305
 306 void MainWindow::setupGame(const GameInfo* gameInfo, const PositionInfo& style12) {
 307   QString variantCode = gameInfo->variant();
 308   VariantPtr variant = Variants::instance().get(variantCode);
 309   shared_ptr<EditGameController> controller(new EditGameController(
 310     table(), variant));
 311   Q_ASSERT(style12.relation == PositionInfo::NotMyMove ||
 312            style12.relation == PositionInfo::MyMove);
 313
 314   // set opponent side
 315   int side = (style12.relation == PositionInfo::MyMove ^ style12.turn == 0) ? 0 : 1;
 316
 317   if (controller->addICSPlayer(side, style12.gameNumber, m_connection)) {
 318     ui().setController(controller);
 319     table()->setPlayers(gameInfo->white(), gameInfo->black());
 320     m_main->setTabText(m_main->currentIndex(),
 321       QString("FICS Game - %1 vs %2").arg(style12.whitePlayer)
 322                                      .arg(style12.blackPlayer));
 323   }
 324 }
 325
 326 void MainWindow::setupExaminedGame(const GameInfo* /*gameInfo*/, const PositionInfo& style12) {
 327   shared_ptr<EditGameController> controller(new EditGameController(
 328                                       table(), Variants::instance().get("chess")));
 329   if (controller->setExaminationMode(style12.gameNumber, m_connection)) {
 330     table()->setPlayers(Player(style12.whitePlayer, -1),
 331                       Player(style12.blackPlayer, -1));
 332     ui().setController(controller);
 333     m_main->setTabText(m_main->currentIndex(),
 334       QString("Examining - %1 vs %2").arg(style12.whitePlayer)
 335                                      .arg(style12.blackPlayer));
 336   }
 337
 338 }
 339
 340 void MainWindow::setupObservedGame(const GameInfo* g, const PositionInfo& style12) {
 341   std::auto_ptr<ChessTable> board(new ChessTable);
 342
 343   shared_ptr<EditGameController> controller(new EditGameController(
 344                                       board.get(), Variants::instance().get(g->variant())));
 345   if (controller->setObserveMode(style12.gameNumber, m_connection)) {
 346     board->setPlayers(Player(style12.whitePlayer, -1),
 347                       Player(style12.blackPlayer, -1));
 348 //    ui().setController(controller);
 349     //std::cout << "adding tab" << std::endl;
 350     createTab(board.get(), controller,
 351       QString("Observing - %1 vs %2").arg(style12.whitePlayer)
 352                                      .arg(style12.blackPlayer));
 353     board.release();
 354   }
 355 }
 356
 357 void MainWindow::setupPGN(const QString& s) {
 358   PGN pgn(s);
 359
 360   std::map<QString, QString>::const_iterator var = pgn.m_tags.find("Variant");
 361   VariantPtr variant;
 362
 363   if (var == pgn.m_tags.end()) {
 364     variant = Variants::instance().get("chess");
 365   }
 366   else if (!(variant = Variants::instance().get(var->second))) {
 367     std::cout << " --> MainWindow::setupPGN: Error, no such variant " << var->second << std::endl;
 368     return;
 369   }
 370
 371   shared_ptr<EditGameController> controller(new EditGameController(
 372                                               table(), variant));
 373   ui().setController(controller);
 374   controller->loadPGN(pgn);
 375
 376 //   table()->setPlayers(gameInfo->white(), gameInfo->black());
 377 //   m_main->setTabText(m_main->currentIndex(),
 378 //     QString("FICS Game - %1 vs %2").arg(style12.whitePlayer)
 379 //                                     .arg(style12.blackPlayer));
 380 }
 381
 382 bool MainWindow::openFile(const QString& filename) {
 383   QFileInfo info(filename);
 384
 385   if(info.isDir()) {
 386      KMessageBox::sorry(this, i18n("You have specified a folder"), i18n("Error"));
 387      return false;
 388   }
 389
 390   if(!info.exists() || !info.isFile()) {
 391      KMessageBox::sorry(this, i18n("The specified file does not exist"), i18n("Error"));
 392      return false;
 393   }
 394
 395   QFile file(filename);
 396
 397   if(!file.open(QIODevice::ReadOnly)) {
 398      KMessageBox::sorry(this, i18n("You do not have read permission to this file."), i18n("Error"));
 399      return false;
 400   }
 401
 402   QTextStream stream(&file);
 403   QTextCodec *codec;
 404   codec = QTextCodec::codecForLocale();
 405   stream.setCodec(codec);
 406
 407   setupPGN(stream.readAll());
 408   //ui().pgnPaste(stream.readAll());
 409   return true;
 410 }
 411
 412 void MainWindow::loadGame() {
 413   KUrl url = KFileDialog::getOpenUrl(KUrl(), "*.pgn", this, i18n("Open PGN file"));
 414
 415   if(url.isEmpty())
 416     return;
 417
 418   QString tmp_file;
 419   if (KIO::NetAccess::download(url, tmp_file, this)) {
 420     openFile(tmp_file);
 421     KIO::NetAccess::removeTempFile(tmp_file);
 422   }
 423   else
 424     KMessageBox::error(this, KIO::NetAccess::lastErrorString());
 425 }
 426
 427 void MainWindow::createConnection(const QString& username, const QString& password,
 428                                   const QString& host, quint16 port,
 429                                   const QString& timeseal, const QString& timeseal_cmd) {
 430   m_connection = shared_ptr<ICSConnection>(new ICSConnection);
 431
 432   connect(m_connection.get(), SIGNAL(established()), this, SLOT(onEstablishConnection()));
 433   connect(m_connection.get(), SIGNAL(hostLookup()), this, SLOT(onHostLookup()));
 434   connect(m_connection.get(), SIGNAL(hostFound()), this, SLOT(onHostFound()));
 435
 436   connect(m_connection.get(), SIGNAL(receivedLine(QString, int)), console, SLOT(displayText(QString, int)));
 437   connect(m_connection.get(), SIGNAL(receivedText(QString, int)), console, SLOT(displayText(QString, int)));
 438
 439   connect(console, SIGNAL(receivedInput(const QString&)), m_connection.get(), SLOT(sendText(const QString&)));
 440   connect(console, SIGNAL(notify()), this, SLOT(flash()));
 441
 442   connect(m_connection.get(), SIGNAL(loginPrompt()), this, SLOT(sendLogin()));
 443   connect(m_connection.get(), SIGNAL(registeredNickname()), this, SLOT(sendBlankPassword()));
 444   connect(m_connection.get(), SIGNAL(prompt()), this, SLOT(prompt()));
 445
 446
 447   connect(m_connection.get(), SIGNAL(creatingExaminedGame(const GameInfo*, const PositionInfo&)),
 448           this, SLOT(setupExaminedGame(const GameInfo*, const PositionInfo&)));
 449   connect(m_connection.get(), SIGNAL(endingExaminedGame(int)), this, SLOT(cleanupGame()));
 450
 451   connect(m_connection.get(), SIGNAL(creatingObservedGame(const GameInfo*, const PositionInfo&)),
 452           this, SLOT(setupObservedGame(const GameInfo*, const PositionInfo&)));
 453   connect(m_connection.get(), SIGNAL(endingObservedGame(int)), this, SLOT(cleanupGame()));
 454
 455
 456   connect(m_connection.get(), SIGNAL(creatingGame(const GameInfo*, const PositionInfo&)),
 457           this, SLOT(setupGame(const GameInfo*, const PositionInfo&)));
 458   connect(m_connection.get(), SIGNAL(endingGame(const QString&, const QString&)),
 459           this, SLOT(cleanupGame(const QString&, const QString&)));
 460   connect(m_connection.get(), SIGNAL(notification()), this, SLOT(flash()));
 461
 462   m_connection->establish(host.toAscii().constData(), port, timeseal, timeseal_cmd);
 463   console->show();
 464
 465   // send username / password combination
 466   if (!username.isEmpty()) {
 467     m_connection->sendText(username);
 468     m_connection->sendText(password);
 469   }
 470
 471   quickConnectDialog.reset();
 472 }
 473
 474 void MainWindow::icsConnect() {
 475   quickConnectDialog = shared_ptr<QConnect>(new QConnect(this));
 476   connect(quickConnectDialog.get(),
 477           SIGNAL(acceptConnection(const QString&,
 478                                   const QString&,
 479                                   const QString&,
 480                                   quint16,
 481                                   const QString&,
 482                                   const QString&)),
 483           this,
 484           SLOT(createConnection(const QString&,
 485                                 const QString&,
 486                                 const QString&,
 487                                 quint16,
 488                                 const QString&,
 489                                 const QString&)));
 490   quickConnectDialog->show();
 491 }
 492
 493 void MainWindow::destroyConnection() {
 494   m_connection.reset();
 495 }
 496
 497 void MainWindow::icsDisconnect() {
 498   destroyConnection();
 499   console->hide();
 500   console->clear();
 501 }
 502
 503 void MainWindow::testConnect() {
 504   Settings s_ics = settings().group("ics");
 505   if (s_ics["username"]) {
 506     QString username = s_ics["username"].value<QString>();
 507     QString password = (s_ics["password"] | "");
 508     QString host = (s_ics["icsHost"] | "freechess.org");
 509     quint16 port = (s_ics["icsPort"] | 5000);
 510     createConnection(username, password, host, port, QString(), QString() );
 511   }
 512   else icsConnect();
 513 }
 514
 515
 516 void MainWindow::onEstablishConnection() {
 517 //  std::cout << "connection established" << std::endl;
 518 }
 519
 520 void MainWindow::onConnectionError(int ) {
 521 //  std::cout << "connection error (" << code << ")" << std::endl;
 522 }
 523
 524 void MainWindow::onHostLookup() {
 525 //  std::cout << "hostLookup..." << std::flush;
 526 }
 527
 528 void MainWindow::onHostFound() {
 529 //  std::cout << "found" << std::endl;
 530 }
 531
 532
 533 void MainWindow::sendLogin() {
 534 //  std::cout << "sending username" << std::endl;
 535 //  connection->sendText(connection->username());
 536 }
 537
 538 void MainWindow::sendBlankPassword() {
 539   std::cout << "sending blank password" << std::endl;
 540   m_connection->sendText("");
 541 }
 542
 543 void MainWindow::prompt() {
 544   if (!m_connection->initialized()) {
 545     m_connection->startup();
 546     m_connection->setInitialized();
 547   }
 548 }
 549
 550 void MainWindow::newGame() {
 551   AbstractPosition::Ptr pos = ui().position();
 552   scoped_ptr<NewGame> dialog(new NewGame(this, pos));
 553   if (dialog->exec() == QDialog::Accepted) {
 554     if(dialog->isCustom()) {
 555       VariantPtr vi = Variants::instance().get(dialog->variant());
 556       std::cout << "vi[" << dialog->variant() << "] = " << vi << std::endl;
 557       pos = vi->createCustomPosition(dialog->customOptions());
 558       pos->setup();
 559     }
 560     else if (!dialog->playFromCurrent())
 561       pos = AbstractPosition::Ptr();
 562     if (!newGame(dialog->variant(), pos))
 563       QMessageBox::information(this, tr("Error"), tr("Variant not implemented, yet"));
 564   }
 565 }
 566
 567 void MainWindow::quit() {
 568   delete this;
 569 }
 570
 571 void MainWindow::flipView() {
 572   table()->flip();
 573 }
 574
 575 void MainWindow::toggleConsole() {
 576   if (console_dock->isVisible())
 577     console_dock->hide();
 578   else {
 579     console_dock->show();
 580     console_dock->setFocus(Qt::MouseFocusReason
 581           /*Qt::ActiveWindowFocusReason*/ /*Qt::OtherFocusReason*/);
 582   }
 583 }
 584
 585 void MainWindow::toggleMoveList() {
 586   if (movelist_dock->isVisible())
 587     movelist_dock->hide();
 588   else {
 589     movelist_dock->show();
 590     movelist_dock->setFocus(Qt::OtherFocusReason);
 591   }
 592 }
 593
 594
 595 void MainWindow::displayMessage(const QString& msg) {
 596   Q_UNUSED(msg); // TODO
 597 //   statusBar()->message(msg, 2000);
 598 }
 599
 600 void MainWindow::displayErrorMessage(ErrorCode code) {
 601   switch(code) {
 602   case InvalidMove:
 603     displayMessage(tr("Illegal move"));
 604     break;
 605   }
 606 }
 607
 608 void MainWindow::flash() {
 609   if( !isAncestorOf(QApplication::focusWidget()) )
 610     Flash::flash(this);
 611 }
 612
 613 #if 0
 614 void MainWindow::prefHighlight() {
 615   PrefHighlight dialog;
 616   int result = dialog.exec();
 617   if (result == QDialog::Accepted) {
 618     dialog.apply();
 619   }
 620 }
 621 #endif
 622
 623 void MainWindow::preferences() {
 624   Preferences dialog(ui().currentVariant());
 625   int result = dialog.exec();
 626   if (result == QDialog::Accepted)
 627     dialog.apply();
 628 }
 629
 630
 631