src/frontends/qt4/GuiApplication.cpp

   1 /**
   2  * \file GuiApplication.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author unknown
   7  * \author John Levon
   8  * \author Abdelrazak Younes
   9  *
  10  * Full author contact details are available in file CREDITS.
  11  */
  12
  13 #include <config.h>
  14
  15 #include "GuiApplication.h"
  16
  17 #include "qt_helpers.h"
  18 #include "GuiImage.h"
  19 #include "GuiKeySymbol.h"
  20 #include "GuiView.h"
  21
  22 #include "frontends/alert.h"
  23 #include "frontends/Application.h"
  24 #include "frontends/FontLoader.h"
  25 #include "frontends/FontMetrics.h"
  26
  27 #include "Buffer.h"
  28 #include "BufferList.h"
  29 #include "BufferView.h"
  30 #include "Font.h"
  31 #include "FuncRequest.h"
  32 #include "FuncStatus.h"
  33 #include "Language.h"
  34 #include "LyX.h"
  35 #include "LyXFunc.h"
  36 #include "LyXRC.h"
  37 #include "Session.h"
  38 #include "version.h"
  39
  40 #include "support/lassert.h"
  41 #include "support/debug.h"
  42 #include "support/ExceptionMessage.h"
  43 #include "support/FileName.h"
  44 #include "support/ForkedCalls.h"
  45 #include "support/gettext.h"
  46 #include "support/lstrings.h"
  47 #include "support/os.h"
  48 #include "support/Package.h"
  49
  50 #include <QClipboard>
  51 #include <QEventLoop>
  52 #include <QFileOpenEvent>
  53 #include <QLocale>
  54 #include <QLibraryInfo>
  55 #include <QMenuBar>
  56 #include <QPixmapCache>
  57 #include <QRegExp>
  58 #include <QSessionManager>
  59 #include <QSocketNotifier>
  60 #include <QSortFilterProxyModel>
  61 #include <QStandardItemModel>
  62 #include <QTextCodec>
  63 #include <QTimer>
  64 #include <QTranslator>
  65 #include <QWidget>
  66
  67 #ifdef Q_WS_X11
  68 #include <X11/Xatom.h>
  69 #include <X11/Xlib.h>
  70 #undef CursorShape
  71 #undef None
  72 #endif
  73
  74 #include <boost/bind.hpp>
  75
  76 #include <exception>
  77
  78 using namespace std;
  79 using namespace lyx::support;
  80
  81 namespace lyx {
  82
  83 frontend::Application * createApplication(int & argc, char * argv[])
  84 {
  85         return new frontend::GuiApplication(argc, argv);
  86 }
  87
  88
  89 namespace frontend {
  90
  91 class SocketNotifier : public QSocketNotifier
  92 {
  93 public:
  94         /// connect a connection notification from the LyXServerSocket
  95         SocketNotifier(QObject * parent, int fd, Application::SocketCallback func)
  96                 : QSocketNotifier(fd, QSocketNotifier::Read, parent), func_(func)
  97         {}
  98
  99 public:
 100         /// The callback function
 101         Application::SocketCallback func_;
 102 };
 103
 104
 105 ////////////////////////////////////////////////////////////////////////
 106 // Mac specific stuff goes here...
 107
 108 class MenuTranslator : public QTranslator
 109 {
 110 public:
 111         MenuTranslator(QObject * parent)
 112                 : QTranslator(parent)
 113         {}
 114
 115         QString translate(const char * /*context*/,
 116           const char * sourceText,
 117           const char * /*comment*/ = 0)
 118         {
 119                 string const s = sourceText;
 120                 if (s == N_("About %1") || s == N_("Preferences")
 121                                 || s == N_("Reconfigure") || s == N_("Quit %1"))
 122                         return qt_(s);
 123                 else
 124                         return QString();
 125         }
 126 };
 127
 128 class GlobalMenuBar : public QMenuBar
 129 {
 130 public:
 131         ///
 132         GlobalMenuBar() : QMenuBar(0) {}
 133
 134         ///
 135         bool event(QEvent * e)
 136         {
 137                 if (e->type() == QEvent::ShortcutOverride) {
 138                         //          && activeWindow() == 0) {
 139                         QKeyEvent * ke = static_cast<QKeyEvent*>(e);
 140                         KeySymbol sym;
 141                         setKeySymbol(&sym, ke);
 142                         theLyXFunc().processKeySym(sym, q_key_state(ke->modifiers()));
 143                         e->accept();
 144                         return true;
 145                 }
 146                 return false;
 147         }
 148 };
 149
 150 ///////////////////////////////////////////////////////////////
 151 // You can find more platform specific stuff
 152 // at the end of this file...
 153 ///////////////////////////////////////////////////////////////
 154
 155
 156 GuiApplication * guiApp;
 157
 158
 159 GuiApplication::GuiApplication(int & argc, char ** argv)
 160         : QApplication(argc, argv), Application(), language_model_(0),
 161         current_view_(0), global_menubar_(0)
 162 {
 163         QString app_name = "LyX";
 164         QCoreApplication::setOrganizationName(app_name);
 165         QCoreApplication::setOrganizationDomain("lyx.org");
 166         QCoreApplication::setApplicationName(app_name + "-" + lyx_version);
 167
 168         // FIXME: quitOnLastWindowClosed is true by default. We should have a
 169         // lyxrc setting for this in order to let the application stay resident.
 170         // But then we need some kind of dock icon, at least on Windows.
 171         /*
 172         if (lyxrc.quit_on_last_window_closed)
 173                 setQuitOnLastWindowClosed(false);
 174         */
 175 #ifdef Q_WS_MACX
 176         // FIXME: Do we need a lyxrc setting for this on Mac? This behaviour
 177         // seems to be the default case for applications like LyX.
 178         setQuitOnLastWindowClosed(false);
 179 #endif
 180
 181 #ifdef Q_WS_X11
 182         // doubleClickInterval() is 400 ms on X11 which is just too long.
 183         // On Windows and Mac OS X, the operating system's value is used.
 184         // On Microsoft Windows, calling this function sets the double
 185         // click interval for all applications. So we don't!
 186         QApplication::setDoubleClickInterval(300);
 187 #endif
 188
 189         // install translation file for Qt built-in dialogs
 190         QString language_name = QString("qt_") + QLocale::system().name();
 191
 192         // language_name can be short (e.g. qt_zh) or long (e.g. qt_zh_CN).
 193         // Short-named translator can be loaded from a long name, but not the
 194         // opposite. Therefore, long name should be used without truncation.
 195         // c.f. http://doc.trolltech.com/4.1/qtranslator.html#load
 196         if (qt_trans_.load(language_name,
 197                 QLibraryInfo::location(QLibraryInfo::TranslationsPath)))
 198         {
 199                 installTranslator(&qt_trans_);
 200                 // even if the language calls for RtL, don't do that
 201                 setLayoutDirection(Qt::LeftToRight);
 202                 LYXERR(Debug::GUI, "Successfully installed Qt translations for locale "
 203                         << language_name);
 204         } else
 205                 LYXERR(Debug::GUI, "Could not find  Qt translations for locale "
 206                         << language_name);
 207
 208 #ifdef Q_WS_MACX
 209         // This allows to translate the strings that appear in the LyX menu.
 210         addMenuTranslator();
 211 #endif
 212         connect(this, SIGNAL(lastWindowClosed()), this, SLOT(onLastWindowClosed()));
 213
 214         using namespace lyx::graphics;
 215
 216         Image::newImage = boost::bind(&GuiImage::newImage);
 217         Image::loadableFormats = boost::bind(&GuiImage::loadableFormats);
 218
 219         // needs to be done before reading lyxrc
 220         QWidget w;
 221         lyxrc.dpi = (w.logicalDpiX() + w.logicalDpiY()) / 2;
 222
 223         guiApp = this;
 224
 225         // Set the cache to 5120 kilobytes which corresponds to screen size of
 226         // 1280 by 1024 pixels with a color depth of 32 bits.
 227         QPixmapCache::setCacheLimit(5120);
 228
 229         // Initialize RC Fonts
 230         if (lyxrc.roman_font_name.empty())
 231                 lyxrc.roman_font_name = fromqstr(romanFontName());
 232
 233         if (lyxrc.sans_font_name.empty())
 234                 lyxrc.sans_font_name = fromqstr(sansFontName());
 235
 236         if (lyxrc.typewriter_font_name.empty())
 237                 lyxrc.typewriter_font_name = fromqstr(typewriterFontName());
 238
 239         general_timer_.setInterval(500);
 240         connect(&general_timer_, SIGNAL(timeout()),
 241                 this, SLOT(handleRegularEvents()));
 242         general_timer_.start();
 243
 244
 245 #ifdef Q_WS_MACX
 246         if (global_menubar_ == 0) {
 247                 // Create the global default menubar which is shown for the dialogs
 248                 // and if no GuiView is visible.
 249                 global_menubar_ = new GlobalMenuBar();
 250         }
 251 #endif
 252 }
 253
 254
 255 FuncStatus GuiApplication::getStatus(FuncRequest const & cmd)
 256 {
 257         FuncStatus flag;
 258         bool enable = true;
 259
 260         switch(cmd.action) {
 261
 262         case LFUN_WINDOW_CLOSE:
 263                 enable = view_ids_.size() > 0;
 264                 break;
 265
 266         default:
 267                 if (!current_view_) {
 268                         enable = false;
 269                         break;
 270                 }
 271         }
 272
 273         if (!enable)
 274                 flag.enabled(false);
 275
 276         return flag;
 277 }
 278
 279
 280 bool GuiApplication::dispatch(FuncRequest const & cmd)
 281 {
 282         switch(cmd.action) {
 283
 284         case LFUN_WINDOW_NEW:
 285                 createView(toqstr(cmd.argument()));
 286                 break;
 287
 288         case LFUN_WINDOW_CLOSE:
 289                 // update bookmark pit of the current buffer before window close
 290                 for (size_t i = 0; i < LyX::ref().session().bookmarks().size(); ++i)
 291                         theLyXFunc().gotoBookmark(i+1, false, false);
 292                 current_view_->close();
 293                 break;
 294
 295         case LFUN_LYX_QUIT:
 296                 // quitting is triggered by the gui code
 297                 // (leaving the event loop).
 298                 if (current_view_)
 299                         current_view_->message(from_utf8(N_("Exiting.")));
 300                 if (closeAllViews())
 301                         quit();
 302                 break;
 303
 304         case LFUN_SCREEN_FONT_UPDATE: {
 305                 // handle the screen font changes.
 306                 font_loader_.update();
 307                 // Backup current_view_
 308                 GuiView * view = current_view_;
 309                 // Set current_view_ to zero to forbid GuiWorkArea::redraw()
 310                 // to skip the refresh.
 311                 current_view_ = 0;
 312                 BufferList::iterator it = theBufferList().begin();
 313                 BufferList::iterator const end = theBufferList().end();
 314                 for (; it != end; ++it)
 315                         (*it)->changed();
 316                 // Restore current_view_
 317                 current_view_ = view;
 318                 break;
 319         }
 320
 321         case LFUN_BUFFER_NEW:
 322                 if (viewCount() == 0
 323                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 324                         createView(QString(), false); // keep hidden
 325                         current_view_->newDocument(to_utf8(cmd.argument()), false);
 326                         current_view_->show();
 327                         setActiveWindow(current_view_);
 328                 } else
 329                         current_view_->newDocument(to_utf8(cmd.argument()), false);
 330                 break;
 331
 332         case LFUN_BUFFER_NEW_TEMPLATE:
 333                 if (viewCount() == 0
 334                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 335                         createView();
 336                         current_view_->newDocument(to_utf8(cmd.argument()), true);
 337                         if (!current_view_->buffer())
 338                                 current_view_->close();
 339                 } else
 340                         current_view_->newDocument(to_utf8(cmd.argument()), true);
 341                 break;
 342
 343         case LFUN_FILE_OPEN:
 344                 if (viewCount() == 0
 345                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 346                         createView();
 347                         current_view_->openDocument(to_utf8(cmd.argument()));
 348                         if (!current_view_->buffer())
 349                                 current_view_->close();
 350                 } else
 351                         current_view_->openDocument(to_utf8(cmd.argument()));
 352                 break;
 353
 354         default:
 355                 // Notify the caller that the action has not been dispatched.
 356                 return false;
 357         }
 358
 359         // The action has been dispatched.
 360         return true;
 361 }
 362
 363
 364 void GuiApplication::resetGui()
 365 {
 366         map<int, GuiView *>::iterator it;
 367         for (it = views_.begin(); it != views_.end(); ++it)
 368                 it->second->resetDialogs();
 369
 370         dispatch(FuncRequest(LFUN_SCREEN_FONT_UPDATE));
 371 }
 372
 373
 374 static void updateIds(map<int, GuiView *> const & stdmap, vector<int> & ids)
 375 {
 376         ids.clear();
 377         map<int, GuiView *>::const_iterator it;
 378         for (it = stdmap.begin(); it != stdmap.end(); ++it)
 379                 ids.push_back(it->first);
 380 }
 381
 382
 383 void GuiApplication::createView(QString const & geometry_arg, bool autoShow)
 384 {
 385         // release the keyboard which might have been grabed by the global
 386         // menubar on Mac to catch shortcuts even without any GuiView.
 387         if (global_menubar_)
 388                 global_menubar_->releaseKeyboard();
 389
 390         // create new view
 391         updateIds(views_, view_ids_);
 392         int id = 0;
 393         while (views_.find(id) != views_.end())
 394                 id++;
 395         GuiView * view = new GuiView(id);
 396
 397         // copy the icon size from old view
 398         if (viewCount() > 0)
 399                 view->setIconSize(current_view_->iconSize());
 400
 401         // register view
 402         views_[id] = view;
 403         updateIds(views_, view_ids_);
 404
 405         if (autoShow) {
 406                 view->show();
 407                 setActiveWindow(view);
 408         }
 409
 410         if (!geometry_arg.isEmpty()) {
 411 #ifdef Q_WS_WIN
 412                 int x, y;
 413                 int w, h;
 414                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
 415                 re.indexIn(geometry_arg);
 416                 w = re.cap(1).toInt();
 417                 h = re.cap(2).toInt();
 418                 x = re.cap(3).toInt();
 419                 y = re.cap(4).toInt();
 420                 view->setGeometry(x, y, w, h);
 421 #endif
 422         }
 423         view->setFocus();
 424         setCurrentView(view);
 425 }
 426
 427
 428
 429
 430 Clipboard & GuiApplication::clipboard()
 431 {
 432         return clipboard_;
 433 }
 434
 435
 436 Selection & GuiApplication::selection()
 437 {
 438         return selection_;
 439 }
 440
 441
 442 int GuiApplication::exec()
 443 {
 444         QTimer::singleShot(1, this, SLOT(execBatchCommands()));
 445         return QApplication::exec();
 446 }
 447
 448
 449 void GuiApplication::exit(int status)
 450 {
 451         QApplication::exit(status);
 452 }
 453
 454
 455 void GuiApplication::execBatchCommands()
 456 {
 457         LyX::ref().execBatchCommands();
 458 }
 459
 460 QAbstractItemModel * GuiApplication::languageModel()
 461 {
 462         if (language_model_)
 463                 return language_model_;
 464
 465         QStandardItemModel * lang_model = new QStandardItemModel(this);
 466         lang_model->insertColumns(0, 1);
 467         int current_row;
 468         Languages::const_iterator it = languages.begin();
 469         Languages::const_iterator end = languages.end();
 470         for (; it != end; ++it) {
 471                 current_row = lang_model->rowCount();
 472                 lang_model->insertRows(current_row, 1);
 473                 QModelIndex item = lang_model->index(current_row, 0);
 474                 lang_model->setData(item, qt_(it->second.display()), Qt::DisplayRole);
 475                 lang_model->setData(item, toqstr(it->second.lang()), Qt::UserRole);
 476         }
 477         language_model_ = new QSortFilterProxyModel(this);
 478         language_model_->setSourceModel(lang_model);
 479         language_model_->setSortLocaleAware(true);
 480         return language_model_;
 481 }
 482
 483
 484 void GuiApplication::restoreGuiSession()
 485 {
 486         if (!lyxrc.load_session)
 487                 return;
 488
 489         Session & session = LyX::ref().session();
 490         vector<FileName> const & lastopened = session.lastOpened().getfiles();
 491         // do not add to the lastfile list since these files are restored from
 492         // last session, and should be already there (regular files), or should
 493         // not be added at all (help files).
 494         for_each(lastopened.begin(), lastopened.end(),
 495                 bind(&GuiView::loadDocument, current_view_, _1, false));
 496
 497         // clear this list to save a few bytes of RAM
 498         session.lastOpened().clear();
 499 }
 500
 501
 502 QString const GuiApplication::romanFontName()
 503 {
 504         QFont font;
 505         font.setKerning(false);
 506         font.setStyleHint(QFont::Serif);
 507         font.setFamily("serif");
 508
 509         return QFontInfo(font).family();
 510 }
 511
 512
 513 QString const GuiApplication::sansFontName()
 514 {
 515         QFont font;
 516         font.setKerning(false);
 517         font.setStyleHint(QFont::SansSerif);
 518         font.setFamily("sans");
 519
 520         return QFontInfo(font).family();
 521 }
 522
 523
 524 QString const GuiApplication::typewriterFontName()
 525 {
 526         QFont font;
 527         font.setKerning(false);
 528         font.setStyleHint(QFont::TypeWriter);
 529         font.setFamily("monospace");
 530
 531         return QFontInfo(font).family();
 532 }
 533
 534
 535 void GuiApplication::handleRegularEvents()
 536 {
 537         ForkedCallsController::handleCompletedProcesses();
 538 }
 539
 540
 541 bool GuiApplication::event(QEvent * e)
 542 {
 543         switch(e->type()) {
 544         case QEvent::FileOpen: {
 545                 // Open a file; this happens only on Mac OS X for now
 546                 QFileOpenEvent * foe = static_cast<QFileOpenEvent *>(e);
 547
 548                 if (!current_view_ || !current_view_->view())
 549                         // The application is not properly initialized yet.
 550                         // So we acknowledge the event and delay the file opening
 551                         // until LyX is ready.
 552                         // FIXME UNICODE: FileName accept an utf8 encoded string.
 553                         LyX::ref().addFileToLoad(fromqstr(foe->file()));
 554                 else
 555                         lyx::dispatch(FuncRequest(LFUN_FILE_OPEN,
 556                                 qstring_to_ucs4(foe->file())));
 557
 558                 e->accept();
 559                 return true;
 560         }
 561         default:
 562                 return QApplication::event(e);
 563         }
 564 }
 565
 566
 567 bool GuiApplication::notify(QObject * receiver, QEvent * event)
 568 {
 569         try {
 570                 return QApplication::notify(receiver, event);
 571         }
 572         catch (ExceptionMessage const & e) {
 573                 switch(e.type_) {
 574                 case ErrorException:
 575                         LyX::cref().emergencyCleanup();
 576                         setQuitOnLastWindowClosed(false);
 577                         closeAllViews();
 578                         Alert::error(e.title_, e.details_);
 579 #ifndef NDEBUG
 580                         // Properly crash in debug mode in order to get a useful backtrace.
 581                         abort();
 582 #endif
 583                         // In release mode, try to exit gracefully.
 584                         this->exit(1);
 585
 586                 case BufferException: {
 587                         Buffer * buf = current_view_->buffer();
 588                         docstring details = e.details_ + '\n';
 589                         details += theBufferList().emergencyWrite(buf);
 590                         theBufferList().release(buf);
 591                         details += "\n" + _("The current document was closed.");
 592                         Alert::error(e.title_, details);
 593                         return false;
 594                 }
 595                 case WarningException:
 596                         Alert::warning(e.title_, e.details_);
 597                         return false;
 598                 }
 599         }
 600         catch (exception const & e) {
 601                 docstring s = _("LyX has caught an exception, it will now "
 602                         "attempt to save all unsaved documents and exit."
 603                         "\n\nException: ");
 604                 s += from_ascii(e.what());
 605                 Alert::error(_("Software exception Detected"), s);
 606                 LyX::cref().exit(1);
 607         }
 608         catch (...) {
 609                 docstring s = _("LyX has caught some really weird exception, it will "
 610                         "now attempt to save all unsaved documents and exit.");
 611                 Alert::error(_("Software exception Detected"), s);
 612                 LyX::cref().exit(1);
 613         }
 614
 615         return false;
 616 }
 617
 618
 619 bool GuiApplication::getRgbColor(ColorCode col, RGBColor & rgbcol)
 620 {
 621         QColor const & qcol = color_cache_.get(col);
 622         if (!qcol.isValid()) {
 623                 rgbcol.r = 0;
 624                 rgbcol.g = 0;
 625                 rgbcol.b = 0;
 626                 return false;
 627         }
 628         rgbcol.r = qcol.red();
 629         rgbcol.g = qcol.green();
 630         rgbcol.b = qcol.blue();
 631         return true;
 632 }
 633
 634
 635 string const GuiApplication::hexName(ColorCode col)
 636 {
 637         return ltrim(fromqstr(color_cache_.get(col).name()), "#");
 638 }
 639
 640
 641 void GuiApplication::updateColor(ColorCode)
 642 {
 643         // FIXME: Bleh, can't we just clear them all at once ?
 644         color_cache_.clear();
 645 }
 646
 647
 648 void GuiApplication::registerSocketCallback(int fd, SocketCallback func)
 649 {
 650         SocketNotifier * sn = new SocketNotifier(this, fd, func);
 651         socket_notifiers_[fd] = sn;
 652         connect(sn, SIGNAL(activated(int)), this, SLOT(socketDataReceived(int)));
 653 }
 654
 655
 656 void GuiApplication::socketDataReceived(int fd)
 657 {
 658         socket_notifiers_[fd]->func_();
 659 }
 660
 661
 662 void GuiApplication::unregisterSocketCallback(int fd)
 663 {
 664         socket_notifiers_.erase(fd);
 665 }
 666
 667
 668 void GuiApplication::commitData(QSessionManager & sm)
 669 {
 670         /// The implementation is required to avoid an application exit
 671         /// when session state save is triggered by session manager.
 672         /// The default implementation sends a close event to all
 673         /// visible top level widgets when session managment allows
 674         /// interaction.
 675         /// We are changing that to close all wiew one by one.
 676         /// FIXME: verify if the default implementation is enough now.
 677         if (sm.allowsInteraction() && !closeAllViews())
 678                 sm.cancel();
 679 }
 680
 681
 682 void GuiApplication::addMenuTranslator()
 683 {
 684         installTranslator(new MenuTranslator(this));
 685 }
 686
 687
 688 bool GuiApplication::unregisterView(int id)
 689 {
 690         updateIds(views_, view_ids_);
 691         LASSERT(views_.find(id) != views_.end(), /**/);
 692         LASSERT(views_[id], /**/);
 693
 694         map<int, GuiView *>::iterator it;
 695         for (it = views_.begin(); it != views_.end(); ++it) {
 696                 if (it->first == id) {
 697                         views_.erase(id);
 698                         break;
 699                 }
 700         }
 701         updateIds(views_, view_ids_);
 702         return true;
 703 }
 704
 705
 706 bool GuiApplication::closeAllViews()
 707 {
 708         updateIds(views_, view_ids_);
 709         if (views_.empty())
 710                 return true;
 711
 712         map<int, GuiView*> const cmap = views_;
 713         map<int, GuiView*>::const_iterator it;
 714         for (it = cmap.begin(); it != cmap.end(); ++it) {
 715                 if (!it->second->close())
 716                         return false;
 717         }
 718
 719         views_.clear();
 720         view_ids_.clear();
 721         return true;
 722 }
 723
 724
 725 GuiView & GuiApplication::view(int id) const
 726 {
 727         LASSERT(views_.find(id) != views_.end(), /**/);
 728         return *views_.find(id)->second;
 729 }
 730
 731
 732 void GuiApplication::hideDialogs(string const & name, Inset * inset) const
 733 {
 734         vector<int>::const_iterator it = view_ids_.begin();
 735         vector<int>::const_iterator const end = view_ids_.end();
 736         for (; it != end; ++it)
 737                 view(*it).hideDialog(name, inset);
 738 }
 739
 740
 741 Buffer const * GuiApplication::updateInset(Inset const * inset) const
 742 {
 743         Buffer const * buffer_ = 0;
 744         vector<int>::const_iterator it = view_ids_.begin();
 745         vector<int>::const_iterator const end = view_ids_.end();
 746         for (; it != end; ++it) {
 747                 Buffer const * ptr = view(*it).updateInset(inset);
 748                 if (ptr)
 749                         buffer_ = ptr;
 750         }
 751         return buffer_;
 752 }
 753
 754
 755 void GuiApplication::readMenus(Lexer & lex)
 756 {
 757         menus().read(lex);
 758 }
 759
 760
 761 bool GuiApplication::searchMenu(FuncRequest const & func,
 762         vector<docstring> & names) const
 763 {
 764         return menus().searchMenu(func, names);
 765 }
 766
 767
 768 void GuiApplication::initGlobalMenu()
 769 {
 770         if (global_menubar_)
 771                 menus().fillMenuBar(global_menubar_, 0, true);
 772 }
 773
 774
 775 void GuiApplication::onLastWindowClosed()
 776 {
 777         if (global_menubar_)
 778                 global_menubar_->grabKeyboard();
 779 }
 780
 781
 782 ////////////////////////////////////////////////////////////////////////
 783 //
 784 // X11 specific stuff goes here...
 785
 786 #ifdef Q_WS_X11
 787 bool GuiApplication::x11EventFilter(XEvent * xev)
 788 {
 789         if (!current_view_)
 790                 return false;
 791
 792         switch (xev->type) {
 793         case SelectionRequest: {
 794                 if (xev->xselectionrequest.selection != XA_PRIMARY)
 795                         break;
 796                 LYXERR(Debug::GUI, "X requested selection.");
 797                 BufferView * bv = current_view_->view();
 798                 if (bv) {
 799                         docstring const sel = bv->requestSelection();
 800                         if (!sel.empty())
 801                                 selection_.put(sel);
 802                 }
 803                 break;
 804         }
 805         case SelectionClear: {
 806                 if (xev->xselectionclear.selection != XA_PRIMARY)
 807                         break;
 808                 LYXERR(Debug::GUI, "Lost selection.");
 809                 BufferView * bv = current_view_->view();
 810                 if (bv)
 811                         bv->clearSelection();
 812                 break;
 813         }
 814         }
 815         return false;
 816 }
 817 #endif
 818
 819 } // namespace frontend
 820
 821
 822 void hideDialogs(std::string const & name, Inset * inset)
 823 {
 824         if (theApp())
 825                 theApp()->hideDialogs(name, inset);
 826 }
 827
 828
 829 ////////////////////////////////////////////////////////////////////
 830 //
 831 // Font stuff
 832 //
 833 ////////////////////////////////////////////////////////////////////
 834
 835 frontend::FontLoader & theFontLoader()
 836 {
 837         LASSERT(frontend::guiApp, /**/);
 838         return frontend::guiApp->fontLoader();
 839 }
 840
 841
 842 frontend::FontMetrics const & theFontMetrics(Font const & f)
 843 {
 844         return theFontMetrics(f.fontInfo());
 845 }
 846
 847
 848 frontend::FontMetrics const & theFontMetrics(FontInfo const & f)
 849 {
 850         LASSERT(frontend::guiApp, /**/);
 851         return frontend::guiApp->fontLoader().metrics(f);
 852 }
 853
 854
 855 ////////////////////////////////////////////////////////////////////
 856 //
 857 // Misc stuff
 858 //
 859 ////////////////////////////////////////////////////////////////////
 860
 861 frontend::Clipboard & theClipboard()
 862 {
 863         LASSERT(frontend::guiApp, /**/);
 864         return frontend::guiApp->clipboard();
 865 }
 866
 867
 868 frontend::Selection & theSelection()
 869 {
 870         LASSERT(frontend::guiApp, /**/);
 871         return frontend::guiApp->selection();
 872 }
 873
 874 } // namespace lyx
 875
 876 #include "GuiApplication_moc.cpp"