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 "ColorCache.h"
  18 #include "GuiClipboard.h"
  19 #include "GuiImage.h"
  20 #include "GuiKeySymbol.h"
  21 #include "GuiSelection.h"
  22 #include "GuiView.h"
  23 #include "Menus.h"
  24 #include "qt_helpers.h"
  25 #include "Toolbars.h"
  26
  27 #include "frontends/alert.h"
  28 #include "frontends/Application.h"
  29 #include "frontends/FontLoader.h"
  30 #include "frontends/FontMetrics.h"
  31
  32 #include "Buffer.h"
  33 #include "BufferList.h"
  34 #include "BufferView.h"
  35 #include "Color.h"
  36 #include "Font.h"
  37 #include "FuncRequest.h"
  38 #include "FuncStatus.h"
  39 #include "Language.h"
  40 #include "Lexer.h"
  41 #include "LyX.h"
  42 #include "LyXAction.h"
  43 #include "LyXFunc.h"
  44 #include "LyXRC.h"
  45 #include "Session.h"
  46 #include "version.h"
  47
  48 #include "support/lassert.h"
  49 #include "support/debug.h"
  50 #include "support/ExceptionMessage.h"
  51 #include "support/FileName.h"
  52 #include "support/foreach.h"
  53 #include "support/ForkedCalls.h"
  54 #include "support/gettext.h"
  55 #include "support/lstrings.h"
  56 #include "support/lyxalgo.h" // sorted
  57 #include "support/Messages.h"
  58 #include "support/os.h"
  59 #include "support/Package.h"
  60
  61 #ifdef Q_WS_MACX
  62 #include "support/linkback/LinkBackProxy.h"
  63 #endif
  64
  65 #include <QByteArray>
  66 #include <QClipboard>
  67 #include <QDateTime>
  68 #include <QDir>
  69 #include <QEventLoop>
  70 #include <QFileOpenEvent>
  71 #include <QFileInfo>
  72 #include <QHash>
  73 #include <QIcon>
  74 #include <QImageReader>
  75 #include <QLocale>
  76 #include <QLibraryInfo>
  77 #include <QList>
  78 #include <QMacPasteboardMime>
  79 #include <QMenuBar>
  80 #include <QMimeData>
  81 #include <QObject>
  82 #include <QPixmap>
  83 #include <QPixmapCache>
  84 #include <QRegExp>
  85 #include <QSessionManager>
  86 #include <QSettings>
  87 #include <QSocketNotifier>
  88 #include <QSortFilterProxyModel>
  89 #include <QStandardItemModel>
  90 #include <QTextCodec>
  91 #include <QTimer>
  92 #include <QTranslator>
  93 #include <QWidget>
  94
  95 #ifdef Q_WS_X11
  96 #include <X11/Xatom.h>
  97 #include <X11/Xlib.h>
  98 #undef CursorShape
  99 #undef None
 100 #endif
 101
 102 #ifdef Q_WS_WIN
 103 #include <QWindowsMime>
 104 #ifdef Q_CC_GNU
 105 #include <wtypes.h>
 106 #endif
 107 #include <objidl.h>
 108 #endif // Q_WS_WIN
 109
 110 #include <boost/bind.hpp>
 111 #include <boost/crc.hpp>
 112
 113 #include <exception>
 114 #include <vector>
 115
 116 using namespace std;
 117 using namespace lyx::support;
 118
 119
 120 static void initializeResources()
 121 {
 122         static bool initialized = false;
 123         if (!initialized) {
 124                 Q_INIT_RESOURCE(Resources);
 125                 initialized = true;
 126         }
 127 }
 128
 129
 130 namespace lyx {
 131
 132 frontend::Application * createApplication(int & argc, char * argv[])
 133 {
 134 #ifndef Q_WS_X11
 135         // prune -geometry argument(s) by shifting
 136         // the following ones 2 places down.
 137         for (int i = 0 ; i < argc ; ++i) {
 138                 if (argv[i] == "-geometry") {
 139                         int const remove = (i+1) < argc ? 2 : 1;
 140                         argc -= remove;
 141                         for (int j = i; j < argc; ++j)
 142                                 argv[j] = argv[j + remove];
 143                         --i;
 144                 }
 145         }
 146 #endif
 147         return new frontend::GuiApplication(argc, argv);
 148 }
 149
 150 namespace frontend {
 151
 152
 153 /// Return the list of loadable formats.
 154 vector<string> loadableImageFormats()
 155 {
 156         vector<string> fmts;
 157
 158         QList<QByteArray> qt_formats = QImageReader::supportedImageFormats();
 159
 160         LYXERR(Debug::GRAPHICS,
 161                 "\nThe image loader can load the following directly:\n");
 162
 163         if (qt_formats.empty())
 164                 LYXERR(Debug::GRAPHICS, "\nQt4 Problem: No Format available!");
 165
 166         for (QList<QByteArray>::const_iterator it = qt_formats.begin(); it != qt_formats.end(); ++it) {
 167
 168                 LYXERR(Debug::GRAPHICS, (const char *) *it << ", ");
 169
 170                 string ext = ascii_lowercase((const char *) *it);
 171                 // special case
 172                 if (ext == "jpeg")
 173                         ext = "jpg";
 174                 fmts.push_back(ext);
 175         }
 176
 177         return fmts;
 178 }
 179
 180 ////////////////////////////////////////////////////////////////////////
 181 // Icon loading support code.
 182 ////////////////////////////////////////////////////////////////////////
 183
 184 namespace {
 185
 186 struct PngMap {
 187         QString key;
 188         QString value;
 189 };
 190
 191
 192 bool operator<(PngMap const & lhs, PngMap const & rhs)
 193 {
 194         return lhs.key < rhs.key;
 195 }
 196
 197
 198 class CompareKey {
 199 public:
 200         CompareKey(QString const & name) : name_(name) {}
 201         bool operator()(PngMap const & other) const { return other.key == name_; }
 202 private:
 203         QString const name_;
 204 };
 205
 206
 207 // this must be sorted alphabetically
 208 // Upper case comes before lower case
 209 PngMap sorted_png_map[] = {
 210         { "Bumpeq", "bumpeq2" },
 211         { "Cap", "cap2" },
 212         { "Cup", "cup2" },
 213         { "Delta", "delta2" },
 214         { "Downarrow", "downarrow2" },
 215         { "Gamma", "gamma2" },
 216         { "Lambda", "lambda2" },
 217         { "Leftarrow", "leftarrow2" },
 218         { "Leftrightarrow", "leftrightarrow2" },
 219         { "Longleftarrow", "longleftarrow2" },
 220         { "Longleftrightarrow", "longleftrightarrow2" },
 221         { "Longrightarrow", "longrightarrow2" },
 222         { "Omega", "omega2" },
 223         { "Phi", "phi2" },
 224         { "Pi", "pi2" },
 225         { "Psi", "psi2" },
 226         { "Rightarrow", "rightarrow2" },
 227         { "Sigma", "sigma2" },
 228         { "Subset", "subset2" },
 229         { "Supset", "supset2" },
 230         { "Theta", "theta2" },
 231         { "Uparrow", "uparrow2" },
 232         { "Updownarrow", "updownarrow2" },
 233         { "Upsilon", "upsilon2" },
 234         { "Vdash", "vdash3" },
 235         { "Vert", "vert2" },
 236         { "Xi", "xi2" },
 237         { "nLeftarrow", "nleftarrow2" },
 238         { "nLeftrightarrow", "nleftrightarrow2" },
 239         { "nRightarrow", "nrightarrow2" },
 240         { "nVDash", "nvdash3" },
 241         { "nvDash", "nvdash2" },
 242         { "textrm \\AA", "textrm_AA"},
 243         { "textrm \\O", "textrm_O"},
 244         { "vDash", "vdash2" }
 245 };
 246
 247 size_t const nr_sorted_png_map = sizeof(sorted_png_map) / sizeof(PngMap);
 248
 249
 250 QString findPng(QString const & name)
 251 {
 252         PngMap const * const begin = sorted_png_map;
 253         PngMap const * const end = begin + nr_sorted_png_map;
 254         LASSERT(sorted(begin, end), /**/);
 255
 256         PngMap const * const it = find_if(begin, end, CompareKey(name));
 257
 258         QString png_name;
 259         if (it != end) {
 260                 png_name = it->value;
 261         } else {
 262                 png_name = name;
 263                 png_name.replace('_', "underscore");
 264                 png_name.replace(' ', '_');
 265
 266                 // This way we can have "math-delim { }" on the toolbar.
 267                 png_name.replace('(', "lparen");
 268                 png_name.replace(')', "rparen");
 269                 png_name.replace('[', "lbracket");
 270                 png_name.replace(']', "rbracket");
 271                 png_name.replace('{', "lbrace");
 272                 png_name.replace('}', "rbrace");
 273                 png_name.replace('|', "bars");
 274                 png_name.replace(',', "thinspace");
 275                 png_name.replace(':', "mediumspace");
 276                 png_name.replace(';', "thickspace");
 277                 png_name.replace('!', "negthinspace");
 278         }
 279
 280         LYXERR(Debug::GUI, "findPng(" << name << ")\n"
 281                 << "Looking for math PNG called \"" << png_name << '"');
 282         return png_name;
 283 }
 284
 285 } // namespace anon
 286
 287
 288 QString iconName(FuncRequest const & f, bool unknown)
 289 {
 290         initializeResources();
 291         QString name1;
 292         QString name2;
 293         QString path;
 294         switch (f.action) {
 295         case LFUN_MATH_INSERT:
 296                 if (!f.argument().empty()) {
 297                         path = "math/";
 298                         name1 = findPng(toqstr(f.argument()).mid(1));
 299                 }
 300                 break;
 301         case LFUN_MATH_DELIM:
 302         case LFUN_MATH_BIGDELIM:
 303                 path = "math/";
 304                 name1 = findPng(toqstr(f.argument()));
 305                 break;
 306         case LFUN_CALL:
 307                 path = "commands/";
 308                 name1 = toqstr(f.argument());
 309                 break;
 310         default:
 311                 name2 = toqstr(lyxaction.getActionName(f.action));
 312                 name1 = name2;
 313
 314                 if (!f.argument().empty()) {
 315                         name1 = name2 + ' ' + toqstr(f.argument());
 316                         name1.replace(' ', '_');
 317                 }
 318         }
 319
 320         FileName fname = libFileSearch("images/" + path, name1, "png");
 321         if (fname.exists())
 322                 return toqstr(fname.absFilename());
 323
 324         fname = libFileSearch("images/" + path, name2, "png");
 325         if (fname.exists())
 326                 return toqstr(fname.absFilename());
 327
 328         path = ":/images/" + path;
 329         QDir res(path);
 330         if (!res.exists()) {
 331                 LYXERR0("Directory " << path << " not found in resource!");
 332                 return QString();
 333         }
 334         name1 += ".png";
 335         if (res.exists(name1))
 336                 return path + name1;
 337
 338         name2 += ".png";
 339         if (res.exists(name2))
 340                 return path + name2;
 341
 342         LYXERR(Debug::GUI, "Cannot find icon for command \""
 343                            << lyxaction.getActionName(f.action)
 344                            << '(' << to_utf8(f.argument()) << ")\"");
 345
 346         if (unknown)
 347                 return QString(":/images/unknown.png");
 348
 349         return QString();
 350 }
 351
 352
 353 QIcon getIcon(FuncRequest const & f, bool unknown)
 354 {
 355         QString icon = iconName(f, unknown);
 356         if (icon.isEmpty())
 357                 return QIcon();
 358
 359         //LYXERR(Debug::GUI, "Found icon: " << icon);
 360         QPixmap pm;
 361         if (!pm.load(icon)) {
 362                 LYXERR0("Cannot load icon " << icon << " please verify resource system!");
 363                 return QIcon();
 364         }
 365
 366         return QIcon(pm);
 367 }
 368
 369
 370 ////////////////////////////////////////////////////////////////////////
 371 // LyX server support code.
 372 ////////////////////////////////////////////////////////////////////////
 373 class SocketNotifier : public QSocketNotifier
 374 {
 375 public:
 376         /// connect a connection notification from the LyXServerSocket
 377         SocketNotifier(QObject * parent, int fd, Application::SocketCallback func)
 378                 : QSocketNotifier(fd, QSocketNotifier::Read, parent), func_(func)
 379         {}
 380
 381 public:
 382         /// The callback function
 383         Application::SocketCallback func_;
 384 };
 385
 386
 387 ////////////////////////////////////////////////////////////////////////
 388 // Mac specific stuff goes here...
 389 ////////////////////////////////////////////////////////////////////////
 390
 391 class MenuTranslator : public QTranslator
 392 {
 393 public:
 394         MenuTranslator(QObject * parent)
 395                 : QTranslator(parent)
 396         {}
 397
 398         QString translate(const char * /*context*/,
 399           const char * sourceText,
 400           const char * /*comment*/ = 0)
 401         {
 402                 string const s = sourceText;
 403                 if (s == N_("About %1") || s == N_("Preferences")
 404                                 || s == N_("Reconfigure") || s == N_("Quit %1"))
 405                         return qt_(s);
 406                 else
 407                         return QString();
 408         }
 409 };
 410
 411 class GlobalMenuBar : public QMenuBar
 412 {
 413 public:
 414         ///
 415         GlobalMenuBar() : QMenuBar(0) {}
 416
 417         ///
 418         bool event(QEvent * e)
 419         {
 420                 if (e->type() == QEvent::ShortcutOverride) {
 421                         //          && activeWindow() == 0) {
 422                         QKeyEvent * ke = static_cast<QKeyEvent*>(e);
 423                         KeySymbol sym;
 424                         setKeySymbol(&sym, ke);
 425                         theLyXFunc().processKeySym(sym, q_key_state(ke->modifiers()));
 426                         e->accept();
 427                         return true;
 428                 }
 429                 return false;
 430         }
 431 };
 432
 433 #ifdef Q_WS_MACX
 434 // QMacPasteboardMimeGraphics can only be compiled on Mac.
 435
 436 class QMacPasteboardMimeGraphics : public QMacPasteboardMime
 437 {
 438 public:
 439         QMacPasteboardMimeGraphics()
 440                 : QMacPasteboardMime(MIME_QT_CONVERTOR|MIME_ALL)
 441         {}
 442
 443         QString convertorName() { return "Graphics"; }
 444
 445         QString flavorFor(QString const & mime)
 446         {
 447                 LYXERR(Debug::ACTION, "flavorFor " << mime);
 448                 if (mime == pdfMimeType())
 449                         return QLatin1String("com.adobe.pdf");
 450                 return QString();
 451         }
 452
 453         QString mimeFor(QString flav)
 454         {
 455                 LYXERR(Debug::ACTION, "mimeFor " << flav);
 456                 if (flav == QLatin1String("com.adobe.pdf"))
 457                         return pdfMimeType();
 458                 return QString();
 459         }
 460
 461         bool canConvert(QString const & mime, QString flav)
 462         {
 463                 return mimeFor(flav) == mime;
 464         }
 465
 466         QVariant convertToMime(QString const & /*mime*/, QList<QByteArray> data,
 467                 QString /*flav*/)
 468         {
 469                 if(data.count() > 1)
 470                         qWarning("QMacPasteboardMimeGraphics: Cannot handle multiple member data");
 471                 return data.first();
 472         }
 473
 474         QList<QByteArray> convertFromMime(QString const & /*mime*/,
 475                 QVariant data, QString /*flav*/)
 476         {
 477                 QList<QByteArray> ret;
 478                 ret.append(data.toByteArray());
 479                 return ret;
 480         }
 481 };
 482 #endif
 483
 484 ///////////////////////////////////////////////////////////////
 485 // You can find more platform specific stuff
 486 // at the end of this file...
 487 ///////////////////////////////////////////////////////////////
 488
 489 ////////////////////////////////////////////////////////////////////////
 490 // Windows specific stuff goes here...
 491
 492 #ifdef Q_WS_WIN
 493 // QWindowsMimeMetafile can only be compiled on Windows.
 494
 495 static FORMATETC cfFromMime(QString const & mimetype)
 496 {
 497         FORMATETC formatetc;
 498         if (mimetype == emfMimeType()) {
 499                 formatetc.cfFormat = CF_ENHMETAFILE;
 500                 formatetc.tymed = TYMED_ENHMF;
 501         } else if (mimetype == wmfMimeType()) {
 502                 formatetc.cfFormat = CF_METAFILEPICT;
 503                 formatetc.tymed = TYMED_MFPICT;
 504         }
 505         formatetc.ptd = 0;
 506         formatetc.dwAspect = DVASPECT_CONTENT;
 507         formatetc.lindex = -1;
 508         return formatetc;
 509 }
 510
 511
 512 class QWindowsMimeMetafile : public QWindowsMime {
 513 public:
 514         QWindowsMimeMetafile() {}
 515
 516         bool canConvertFromMime(FORMATETC const & formatetc,
 517                 QMimeData const * mimedata) const
 518         {
 519                 return false;
 520         }
 521
 522         bool canConvertToMime(QString const & mimetype,
 523                 IDataObject * pDataObj) const
 524         {
 525                 if (mimetype != emfMimeType() && mimetype != wmfMimeType())
 526                         return false;
 527                 FORMATETC formatetc = cfFromMime(mimetype);
 528                 return pDataObj->QueryGetData(&formatetc) == S_OK;
 529         }
 530
 531         bool convertFromMime(FORMATETC const & formatetc,
 532                 const QMimeData * mimedata, STGMEDIUM * pmedium) const
 533         {
 534                 return false;
 535         }
 536
 537         QVariant convertToMime(QString const & mimetype, IDataObject * pDataObj,
 538                 QVariant::Type preferredType) const
 539         {
 540                 QByteArray data;
 541                 if (!canConvertToMime(mimetype, pDataObj))
 542                         return data;
 543
 544                 FORMATETC formatetc = cfFromMime(mimetype);
 545                 STGMEDIUM s;
 546                 if (pDataObj->GetData(&formatetc, &s) != S_OK)
 547                         return data;
 548
 549                 int dataSize;
 550                 if (s.tymed == TYMED_ENHMF) {
 551                         dataSize = GetEnhMetaFileBits(s.hEnhMetaFile, 0, 0);
 552                         data.resize(dataSize);
 553                         dataSize = GetEnhMetaFileBits(s.hEnhMetaFile, dataSize,
 554                                 (LPBYTE)data.data());
 555                 } else if (s.tymed == TYMED_MFPICT) {
 556                         dataSize = GetMetaFileBitsEx((HMETAFILE)s.hMetaFilePict, 0, 0);
 557                         data.resize(dataSize);
 558                         dataSize = GetMetaFileBitsEx((HMETAFILE)s.hMetaFilePict, dataSize,
 559                                 (LPBYTE)data.data());
 560                 }
 561                 data.detach();
 562                 ReleaseStgMedium(&s);
 563
 564                 return data;
 565         }
 566
 567
 568         QVector<FORMATETC> formatsForMime(QString const & mimeType,
 569                 QMimeData const * mimeData) const
 570         {
 571                 QVector<FORMATETC> formats;
 572                 formats += cfFromMime(mimeType);
 573                 return formats;
 574         }
 575
 576         QString mimeForFormat(FORMATETC const & formatetc) const
 577         {
 578                 switch (formatetc.cfFormat) {
 579                 case CF_ENHMETAFILE:
 580                         return emfMimeType();
 581                 case CF_METAFILEPICT:
 582                         return wmfMimeType();
 583                 }
 584                 return QString();
 585         }
 586 };
 587
 588 #endif // Q_WS_WIN
 589
 590 ////////////////////////////////////////////////////////////////////////
 591 // GuiApplication::Private definition and implementation.
 592 ////////////////////////////////////////////////////////////////////////
 593
 594 struct GuiApplication::Private
 595 {
 596         Private(): language_model_(0), global_menubar_(0) {}
 597
 598         ///
 599         QSortFilterProxyModel * language_model_;
 600         ///
 601         GuiClipboard clipboard_;
 602         ///
 603         GuiSelection selection_;
 604         ///
 605         FontLoader font_loader_;
 606         ///
 607         ColorCache color_cache_;
 608         ///
 609         QTranslator qt_trans_;
 610         ///
 611         QHash<int, SocketNotifier *> socket_notifiers_;
 612         ///
 613         Menus menus_;
 614         ///
 615         /// The global instance
 616         Toolbars toolbars_;
 617
 618         /// this timer is used for any regular events one wants to
 619         /// perform. at present it is used to check if forked processes
 620         /// are done.
 621         QTimer general_timer_;
 622
 623         /// Multiple views container.
 624         /**
 625         * Warning: This must not be a smart pointer as the destruction of the
 626         * object is handled by Qt when the view is closed
 627         * \sa Qt::WA_DeleteOnClose attribute.
 628         */
 629         QHash<int, GuiView *> views_;
 630
 631         /// Only used on mac.
 632         GlobalMenuBar * global_menubar_;
 633
 634 #ifdef Q_WS_MACX
 635         /// Linkback mime handler for MacOSX.
 636         QMacPasteboardMimeGraphics mac_pasteboard_mime_;
 637 #endif
 638
 639 #ifdef Q_WS_WIN
 640         /// WMF Mime handler for Windows clipboard.
 641         /// \warning: see comment in ~GuiApplication and in bug 4846.
 642         QWindowsMimeMetafile wmf_mime_;
 643 #endif
 644 };
 645
 646
 647 GuiApplication * guiApp;
 648
 649 GuiApplication::~GuiApplication()
 650 {
 651 #ifdef Q_WS_MACX
 652         closeAllLinkBackLinks();
 653 #endif
 654         // FIXME: Work around bug 4846 for Windows Vista and Qt4
 655         // (see http://bugzilla.lyx.org/show_bug.cgi?id=4846)
 656         // If the clipboard is not cleared, LyX crashes on exit when it is
 657         // compiled in release mode and if there is something in the clipboard.
 658         // This is related to QWindowsMimeMetafile which is apparently not
 659         // properly destroyed.
 660         qApp->clipboard()->clear(QClipboard::Clipboard);
 661         delete d;
 662 }
 663
 664
 665 GuiApplication::GuiApplication(int & argc, char ** argv)
 666         : QApplication(argc, argv),     current_view_(0), d(new GuiApplication::Private)
 667 {
 668         QString app_name = "LyX";
 669         QCoreApplication::setOrganizationName(app_name);
 670         QCoreApplication::setOrganizationDomain("lyx.org");
 671         QCoreApplication::setApplicationName(app_name + "-" + lyx_version);
 672
 673         // Install translator for GUI elements.
 674         installTranslator(&d->qt_trans_);
 675
 676         // FIXME: quitOnLastWindowClosed is true by default. We should have a
 677         // lyxrc setting for this in order to let the application stay resident.
 678         // But then we need some kind of dock icon, at least on Windows.
 679         /*
 680         if (lyxrc.quit_on_last_window_closed)
 681                 setQuitOnLastWindowClosed(false);
 682         */
 683 #ifdef Q_WS_MACX
 684         // FIXME: Do we need a lyxrc setting for this on Mac? This behaviour
 685         // seems to be the default case for applications like LyX.
 686         setQuitOnLastWindowClosed(false);
 687
 688         // This allows to translate the strings that appear in the LyX menu.
 689         /// A translator suitable for the entries in the LyX menu.
 690         /// Only needed with Qt/Mac.
 691         installTranslator(new MenuTranslator(this));
 692 #endif
 693
 694 #ifdef Q_WS_X11
 695         // doubleClickInterval() is 400 ms on X11 which is just too long.
 696         // On Windows and Mac OS X, the operating system's value is used.
 697         // On Microsoft Windows, calling this function sets the double
 698         // click interval for all applications. So we don't!
 699         QApplication::setDoubleClickInterval(300);
 700 #endif
 701
 702         connect(this, SIGNAL(lastWindowClosed()), this, SLOT(onLastWindowClosed()));
 703
 704         // needs to be done before reading lyxrc
 705         QWidget w;
 706         lyxrc.dpi = (w.logicalDpiX() + w.logicalDpiY()) / 2;
 707
 708         guiApp = this;
 709
 710         // Set the cache to 5120 kilobytes which corresponds to screen size of
 711         // 1280 by 1024 pixels with a color depth of 32 bits.
 712         QPixmapCache::setCacheLimit(5120);
 713
 714         // Initialize RC Fonts
 715         if (lyxrc.roman_font_name.empty())
 716                 lyxrc.roman_font_name = fromqstr(romanFontName());
 717
 718         if (lyxrc.sans_font_name.empty())
 719                 lyxrc.sans_font_name = fromqstr(sansFontName());
 720
 721         if (lyxrc.typewriter_font_name.empty())
 722                 lyxrc.typewriter_font_name = fromqstr(typewriterFontName());
 723
 724         d->general_timer_.setInterval(500);
 725         connect(&d->general_timer_, SIGNAL(timeout()),
 726                 this, SLOT(handleRegularEvents()));
 727         d->general_timer_.start();
 728 }
 729
 730
 731 void GuiApplication::clearSession()
 732 {
 733         QSettings settings;
 734         settings.clear();
 735 }
 736
 737
 738 docstring GuiApplication::iconName(FuncRequest const & f, bool unknown)
 739 {
 740         return qstring_to_ucs4(lyx::frontend::iconName(f, unknown));
 741 }
 742
 743
 744
 745 bool GuiApplication::getStatus(FuncRequest const & cmd, FuncStatus & flag) const
 746 {
 747         bool enable = true;
 748
 749         switch(cmd.action) {
 750
 751         case LFUN_WINDOW_CLOSE:
 752                 enable = d->views_.size() > 0;
 753                 break;
 754
 755         case LFUN_BUFFER_NEW:
 756         case LFUN_BUFFER_NEW_TEMPLATE:
 757         case LFUN_FILE_OPEN:
 758         case LFUN_SCREEN_FONT_UPDATE:
 759         case LFUN_SET_COLOR:
 760         case LFUN_WINDOW_NEW:
 761         case LFUN_LYX_QUIT:
 762                 enable = true;
 763                 break;
 764
 765         default:
 766                 return false;
 767         }
 768
 769         if (!enable)
 770                 flag.setEnabled(false);
 771
 772         return true;
 773 }
 774
 775
 776 bool GuiApplication::dispatch(FuncRequest const & cmd)
 777 {
 778         switch (cmd.action) {
 779
 780         case LFUN_WINDOW_NEW:
 781                 createView(toqstr(cmd.argument()));
 782                 break;
 783
 784         case LFUN_WINDOW_CLOSE:
 785                 // update bookmark pit of the current buffer before window close
 786                 for (size_t i = 0; i < theSession().bookmarks().size(); ++i)
 787                         theLyXFunc().gotoBookmark(i+1, false, false);
 788                 current_view_->close();
 789                 break;
 790
 791         case LFUN_LYX_QUIT:
 792                 // quitting is triggered by the gui code
 793                 // (leaving the event loop).
 794                 if (current_view_)
 795                         current_view_->message(from_utf8(N_("Exiting.")));
 796                 if (closeAllViews())
 797                         quit();
 798                 break;
 799
 800         case LFUN_SCREEN_FONT_UPDATE: {
 801                 // handle the screen font changes.
 802                 d->font_loader_.update();
 803                 // Backup current_view_
 804                 GuiView * view = current_view_;
 805                 // Set current_view_ to zero to forbid GuiWorkArea::redraw()
 806                 // to skip the refresh.
 807                 current_view_ = 0;
 808                 BufferList::iterator it = theBufferList().begin();
 809                 BufferList::iterator const end = theBufferList().end();
 810                 for (; it != end; ++it)
 811                         (*it)->changed();
 812                 // Restore current_view_
 813                 current_view_ = view;
 814                 break;
 815         }
 816
 817         case LFUN_BUFFER_NEW:
 818                 if (d->views_.empty()
 819                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 820                         createView(QString(), false); // keep hidden
 821                         current_view_->newDocument(to_utf8(cmd.argument()), false);
 822                         current_view_->show();
 823                         setActiveWindow(current_view_);
 824                 } else {
 825                         current_view_->newDocument(to_utf8(cmd.argument()), false);
 826                 }
 827                 break;
 828
 829         case LFUN_BUFFER_NEW_TEMPLATE:
 830                 if (d->views_.empty()
 831                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 832                         createView();
 833                         current_view_->newDocument(to_utf8(cmd.argument()), true);
 834                         if (!current_view_->buffer())
 835                                 current_view_->close();
 836                 } else {
 837                         current_view_->newDocument(to_utf8(cmd.argument()), true);
 838                 }
 839                 break;
 840
 841         case LFUN_FILE_OPEN:
 842                 if (d->views_.empty()
 843                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 844                         string const fname = to_utf8(cmd.argument());
 845                         // We want the ui session to be saved per document and not per
 846                         // window number. The filename crc is a good enough identifier.
 847                         boost::crc_32_type crc;
 848                         crc = for_each(fname.begin(), fname.end(), crc);
 849                         createView(crc.checksum());
 850                         current_view_->openDocument(fname);
 851                         if (!current_view_->buffer())
 852                                 current_view_->close();
 853                 } else
 854                         current_view_->openDocument(to_utf8(cmd.argument()));
 855                 break;
 856
 857         case LFUN_SET_COLOR: {
 858                 string lyx_name;
 859                 string const x11_name = split(to_utf8(cmd.argument()), lyx_name, ' ');
 860                 if (lyx_name.empty() || x11_name.empty()) {
 861                         current_view_->message(
 862                                 _("Syntax: set-color <lyx_name> <x11_name>"));
 863                         break;
 864                 }
 865
 866                 string const graphicsbg = lcolor.getLyXName(Color_graphicsbg);
 867                 bool const graphicsbg_changed = lyx_name == graphicsbg
 868                         && x11_name != graphicsbg;
 869                 if (graphicsbg_changed) {
 870                         // FIXME: The graphics cache no longer has a changeDisplay method.
 871 #if 0
 872                         graphics::GCache::get().changeDisplay(true);
 873 #endif
 874                 }
 875
 876                 if (!lcolor.setColor(lyx_name, x11_name)) {
 877                         current_view_->message(
 878                                         bformat(_("Set-color \"%1$s\" failed "
 879                                                                "- color is undefined or "
 880                                                                "may not be redefined"),
 881                                                                    from_utf8(lyx_name)));
 882                         break;
 883                 }
 884                 // Make sure we don't keep old colors in cache.
 885                 d->color_cache_.clear();
 886                 break;
 887         }
 888
 889         default:
 890                 // Notify the caller that the action has not been dispatched.
 891                 return false;
 892         }
 893
 894         // The action has been dispatched.
 895         return true;
 896 }
 897
 898
 899 void GuiApplication::resetGui()
 900 {
 901         // Set the language defined by the user.
 902         setGuiLanguage();
 903
 904         // Read menus
 905         if (!readUIFile(toqstr(lyxrc.ui_file)))
 906                 // Gives some error box here.
 907                 return;
 908
 909         if (d->global_menubar_)
 910                 d->menus_.fillMenuBar(d->global_menubar_, 0, false);
 911
 912         QHash<int, GuiView *>::iterator it;
 913         for (it = d->views_.begin(); it != d->views_.end(); ++it) {
 914                 GuiView * gv = *it;
 915                 gv->setLayoutDirection(layoutDirection());
 916                 gv->resetDialogs();
 917         }
 918
 919         dispatch(FuncRequest(LFUN_SCREEN_FONT_UPDATE));
 920 }
 921
 922
 923 void GuiApplication::createView(int view_id)
 924 {
 925         createView(QString(), true, view_id);
 926 }
 927
 928
 929 void GuiApplication::createView(QString const & geometry_arg, bool autoShow,
 930         int view_id)
 931 {
 932         // release the keyboard which might have been grabed by the global
 933         // menubar on Mac to catch shortcuts even without any GuiView.
 934         if (d->global_menubar_)
 935                 d->global_menubar_->releaseKeyboard();
 936
 937         // create new view
 938         int id = view_id;
 939         if (id == 0) {
 940                 while (d->views_.find(id) != d->views_.end())
 941                         id++;
 942         }
 943         LYXERR(Debug::GUI, "About to create new window with ID " << id);
 944         GuiView * view = new GuiView(id);
 945         // register view
 946         d->views_[id] = view;
 947
 948         if (autoShow) {
 949                 view->show();
 950                 setActiveWindow(view);
 951         }
 952
 953         if (!geometry_arg.isEmpty()) {
 954 #ifdef Q_WS_WIN
 955                 int x, y;
 956                 int w, h;
 957                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
 958                 re.indexIn(geometry_arg);
 959                 w = re.cap(1).toInt();
 960                 h = re.cap(2).toInt();
 961                 x = re.cap(3).toInt();
 962                 y = re.cap(4).toInt();
 963                 view->setGeometry(x, y, w, h);
 964 #endif
 965         }
 966         view->setFocus();
 967 }
 968
 969
 970 Clipboard & GuiApplication::clipboard()
 971 {
 972         return d->clipboard_;
 973 }
 974
 975
 976 Selection & GuiApplication::selection()
 977 {
 978         return d->selection_;
 979 }
 980
 981
 982 FontLoader & GuiApplication::fontLoader()
 983 {
 984         return d->font_loader_;
 985 }
 986
 987
 988 Toolbars const & GuiApplication::toolbars() const
 989 {
 990         return d->toolbars_;
 991 }
 992
 993
 994 Toolbars & GuiApplication::toolbars()
 995 {
 996         return d->toolbars_;
 997 }
 998
 999
1000 Menus const & GuiApplication::menus() const
1001 {
1002         return d->menus_;
1003 }
1004
1005
1006 Menus & GuiApplication::menus()
1007 {
1008         return d->menus_;
1009 }
1010
1011
1012 QList<int> GuiApplication::viewIds() const
1013 {
1014         return d->views_.keys();
1015 }
1016
1017
1018 ColorCache & GuiApplication::colorCache()
1019 {
1020         return d->color_cache_;
1021 }
1022
1023
1024 int GuiApplication::exec()
1025 {
1026         QTimer::singleShot(1, this, SLOT(execBatchCommands()));
1027         return QApplication::exec();
1028 }
1029
1030
1031 void GuiApplication::exit(int status)
1032 {
1033         QApplication::exit(status);
1034 }
1035
1036
1037 void GuiApplication::setGuiLanguage()
1038 {
1039         // Set the language defined by the user.
1040         setRcGuiLanguage();
1041
1042         QString const default_language = toqstr(Messages::defaultLanguage());
1043         LYXERR(Debug::LOCALE, "Tring to set default locale to: " << default_language);
1044         QLocale const default_locale(default_language);
1045         QLocale::setDefault(default_locale);
1046
1047         // install translation file for Qt built-in dialogs
1048         QString const language_name = QString("qt_") + default_locale.name();
1049
1050         // language_name can be short (e.g. qt_zh) or long (e.g. qt_zh_CN).
1051         // Short-named translator can be loaded from a long name, but not the
1052         // opposite. Therefore, long name should be used without truncation.
1053         // c.f. http://doc.trolltech.com/4.1/qtranslator.html#load
1054         if (!d->qt_trans_.load(language_name,
1055                         QLibraryInfo::location(QLibraryInfo::TranslationsPath))) {
1056                 LYXERR(Debug::LOCALE, "Could not find  Qt translations for locale "
1057                         << language_name);
1058         } else {
1059                 LYXERR(Debug::LOCALE, "Successfully installed Qt translations for locale "
1060                         << language_name);
1061         }
1062
1063         switch (default_locale.language()) {
1064         case QLocale::Arabic :
1065         case QLocale::Hebrew :
1066         case QLocale::Persian :
1067         case QLocale::Urdu :
1068         setLayoutDirection(Qt::RightToLeft);
1069                 break;
1070         default:
1071         setLayoutDirection(Qt::LeftToRight);
1072         }
1073 }
1074
1075
1076 void GuiApplication::execBatchCommands()
1077 {
1078         setGuiLanguage();
1079
1080         // Read menus
1081         if (!readUIFile(toqstr(lyxrc.ui_file)))
1082                 // Gives some error box here.
1083                 return;
1084
1085 #ifdef Q_WS_MACX
1086         // Create the global default menubar which is shown for the dialogs
1087         // and if no GuiView is visible.
1088         // This must be done after the session was recovered to know the "last files".
1089         d->global_menubar_ = new GlobalMenuBar();
1090         d->menus_.fillMenuBar(d->global_menubar_, 0, true);
1091 #endif
1092
1093         lyx::execBatchCommands();
1094 }
1095
1096
1097 QAbstractItemModel * GuiApplication::languageModel()
1098 {
1099         if (d->language_model_)
1100                 return d->language_model_;
1101
1102         QStandardItemModel * lang_model = new QStandardItemModel(this);
1103         lang_model->insertColumns(0, 1);
1104         int current_row;
1105         Languages::const_iterator it = languages.begin();
1106         Languages::const_iterator end = languages.end();
1107         for (; it != end; ++it) {
1108                 current_row = lang_model->rowCount();
1109                 lang_model->insertRows(current_row, 1);
1110                 QModelIndex item = lang_model->index(current_row, 0);
1111                 lang_model->setData(item, qt_(it->second.display()), Qt::DisplayRole);
1112                 lang_model->setData(item, toqstr(it->second.lang()), Qt::UserRole);
1113         }
1114         d->language_model_ = new QSortFilterProxyModel(this);
1115         d->language_model_->setSourceModel(lang_model);
1116 #if QT_VERSION >= 0x040300
1117         d->language_model_->setSortLocaleAware(true);
1118 #endif
1119         return d->language_model_;
1120 }
1121
1122
1123 void GuiApplication::restoreGuiSession()
1124 {
1125         if (!lyxrc.load_session)
1126                 return;
1127
1128         Session & session = theSession();
1129         vector<FileName> const & lastopened = session.lastOpened().getfiles();
1130         // do not add to the lastfile list since these files are restored from
1131         // last session, and should be already there (regular files), or should
1132         // not be added at all (help files).
1133         for_each(lastopened.begin(), lastopened.end(),
1134                 bind(&GuiView::loadDocument, current_view_, _1, false));
1135
1136         // clear this list to save a few bytes of RAM
1137         session.lastOpened().clear();
1138 }
1139
1140
1141 QString const GuiApplication::romanFontName()
1142 {
1143         QFont font;
1144         font.setKerning(false);
1145         font.setStyleHint(QFont::Serif);
1146         font.setFamily("serif");
1147
1148         return QFontInfo(font).family();
1149 }
1150
1151
1152 QString const GuiApplication::sansFontName()
1153 {
1154         QFont font;
1155         font.setKerning(false);
1156         font.setStyleHint(QFont::SansSerif);
1157         font.setFamily("sans");
1158
1159         return QFontInfo(font).family();
1160 }
1161
1162
1163 QString const GuiApplication::typewriterFontName()
1164 {
1165         QFont font;
1166         font.setKerning(false);
1167         font.setStyleHint(QFont::TypeWriter);
1168         font.setFamily("monospace");
1169
1170         return QFontInfo(font).family();
1171 }
1172
1173
1174 void GuiApplication::handleRegularEvents()
1175 {
1176         ForkedCallsController::handleCompletedProcesses();
1177 }
1178
1179
1180 bool GuiApplication::event(QEvent * e)
1181 {
1182         switch(e->type()) {
1183         case QEvent::FileOpen: {
1184                 // Open a file; this happens only on Mac OS X for now
1185                 QFileOpenEvent * foe = static_cast<QFileOpenEvent *>(e);
1186                 lyx::dispatch(FuncRequest(LFUN_FILE_OPEN,
1187                         qstring_to_ucs4(foe->file())));
1188                 e->accept();
1189                 return true;
1190         }
1191         default:
1192                 return QApplication::event(e);
1193         }
1194 }
1195
1196
1197 bool GuiApplication::notify(QObject * receiver, QEvent * event)
1198 {
1199         try {
1200                 return QApplication::notify(receiver, event);
1201         }
1202         catch (ExceptionMessage const & e) {
1203                 switch(e.type_) {
1204                 case ErrorException:
1205                         emergencyCleanup();
1206                         setQuitOnLastWindowClosed(false);
1207                         closeAllViews();
1208                         Alert::error(e.title_, e.details_);
1209 #ifndef NDEBUG
1210                         // Properly crash in debug mode in order to get a useful backtrace.
1211                         abort();
1212 #endif
1213                         // In release mode, try to exit gracefully.
1214                         this->exit(1);
1215
1216                 case BufferException: {
1217                         Buffer * buf = current_view_->buffer();
1218                         docstring details = e.details_ + '\n';
1219                         details += theBufferList().emergencyWrite(buf);
1220                         theBufferList().release(buf);
1221                         details += "\n" + _("The current document was closed.");
1222                         Alert::error(e.title_, details);
1223                         return false;
1224                 }
1225                 case WarningException:
1226                         Alert::warning(e.title_, e.details_);
1227                         return false;
1228                 }
1229         }
1230         catch (exception const & e) {
1231                 docstring s = _("LyX has caught an exception, it will now "
1232                         "attempt to save all unsaved documents and exit."
1233                         "\n\nException: ");
1234                 s += from_ascii(e.what());
1235                 Alert::error(_("Software exception Detected"), s);
1236                 lyx_exit(1);
1237         }
1238         catch (...) {
1239                 docstring s = _("LyX has caught some really weird exception, it will "
1240                         "now attempt to save all unsaved documents and exit.");
1241                 Alert::error(_("Software exception Detected"), s);
1242                 lyx_exit(1);
1243         }
1244
1245         return false;
1246 }
1247
1248
1249 bool GuiApplication::getRgbColor(ColorCode col, RGBColor & rgbcol)
1250 {
1251         QColor const & qcol = d->color_cache_.get(col);
1252         if (!qcol.isValid()) {
1253                 rgbcol.r = 0;
1254                 rgbcol.g = 0;
1255                 rgbcol.b = 0;
1256                 return false;
1257         }
1258         rgbcol.r = qcol.red();
1259         rgbcol.g = qcol.green();
1260         rgbcol.b = qcol.blue();
1261         return true;
1262 }
1263
1264
1265 string const GuiApplication::hexName(ColorCode col)
1266 {
1267         return ltrim(fromqstr(d->color_cache_.get(col).name()), "#");
1268 }
1269
1270
1271 void GuiApplication::registerSocketCallback(int fd, SocketCallback func)
1272 {
1273         SocketNotifier * sn = new SocketNotifier(this, fd, func);
1274         d->socket_notifiers_[fd] = sn;
1275         connect(sn, SIGNAL(activated(int)), this, SLOT(socketDataReceived(int)));
1276 }
1277
1278
1279 void GuiApplication::socketDataReceived(int fd)
1280 {
1281         d->socket_notifiers_[fd]->func_();
1282 }
1283
1284
1285 void GuiApplication::unregisterSocketCallback(int fd)
1286 {
1287         d->socket_notifiers_.take(fd)->setEnabled(false);
1288 }
1289
1290
1291 void GuiApplication::commitData(QSessionManager & sm)
1292 {
1293         /// The implementation is required to avoid an application exit
1294         /// when session state save is triggered by session manager.
1295         /// The default implementation sends a close event to all
1296         /// visible top level widgets when session managment allows
1297         /// interaction.
1298         /// We are changing that to close all wiew one by one.
1299         /// FIXME: verify if the default implementation is enough now.
1300         if (sm.allowsInteraction() && !closeAllViews())
1301                 sm.cancel();
1302 }
1303
1304
1305 void GuiApplication::unregisterView(GuiView * gv)
1306 {
1307         LASSERT(d->views_[gv->id()] == gv, /**/);
1308         d->views_.remove(gv->id());
1309         if (current_view_ == gv) {
1310                 current_view_ = 0;
1311                 theLyXFunc().setLyXView(0);
1312         }
1313 }
1314
1315
1316 bool GuiApplication::closeAllViews()
1317 {
1318         if (d->views_.empty())
1319                 return true;
1320
1321         QList<GuiView *> views = d->views_.values();
1322         foreach (GuiView * view, views) {
1323                 if (!view->close())
1324                         return false;
1325         }
1326
1327         d->views_.clear();
1328         return true;
1329 }
1330
1331
1332 GuiView & GuiApplication::view(int id) const
1333 {
1334         LASSERT(d->views_.contains(id), /**/);
1335         return *d->views_.value(id);
1336 }
1337
1338
1339 void GuiApplication::hideDialogs(string const & name, Inset * inset) const
1340 {
1341         QList<GuiView *> views = d->views_.values();
1342         foreach (GuiView * view, views)
1343                 view->hideDialog(name, inset);
1344 }
1345
1346
1347 Buffer const * GuiApplication::updateInset(Inset const * inset) const
1348 {
1349         Buffer const * buffer_ = 0;
1350         QHash<int, GuiView *>::iterator end = d->views_.end();
1351         for (QHash<int, GuiView *>::iterator it = d->views_.begin(); it != end; ++it) {
1352                 if (Buffer const * ptr = (*it)->updateInset(inset))
1353                         buffer_ = ptr;
1354         }
1355         return buffer_;
1356 }
1357
1358
1359 bool GuiApplication::searchMenu(FuncRequest const & func,
1360         docstring_list & names) const
1361 {
1362         return d->menus_.searchMenu(func, names);
1363 }
1364
1365
1366 bool GuiApplication::readUIFile(QString const & name, bool include)
1367 {
1368         enum {
1369                 ui_menuset = 1,
1370                 ui_toolbars,
1371                 ui_toolbarset,
1372                 ui_include,
1373                 ui_last
1374         };
1375
1376         LexerKeyword uitags[] = {
1377                 { "include", ui_include },
1378                 { "menuset", ui_menuset },
1379                 { "toolbars", ui_toolbars },
1380                 { "toolbarset", ui_toolbarset }
1381         };
1382
1383         LYXERR(Debug::INIT, "About to read " << name << "...");
1384
1385         FileName ui_path;
1386         if (include) {
1387                 ui_path = libFileSearch("ui", name, "inc");
1388                 if (ui_path.empty())
1389                         ui_path = libFileSearch("ui", changeExtension(name, "inc"));
1390         } else {
1391                 ui_path = libFileSearch("ui", name, "ui");
1392         }
1393
1394         if (ui_path.empty()) {
1395                 LYXERR(Debug::INIT, "Could not find " << name);
1396                 Alert::warning(_("Could not find UI definition file"),
1397                                bformat(_("Error while reading the configuration file\n%1$s.\n"
1398                                    "Please check your installation."), qstring_to_ucs4(name)));
1399                 return false;
1400         }
1401
1402
1403         // Ensure that a file is read only once (prevents include loops)
1404         static QStringList uifiles;
1405         QString const uifile = toqstr(ui_path.absFilename());
1406         if (uifiles.contains(uifile)) {
1407                 if (!include) {
1408                         // We are reading again the top uifile so reset the safeguard:
1409                         uifiles.clear();
1410                         d->menus_.reset();
1411                         d->toolbars_.reset();
1412                 } else {
1413                         LYXERR(Debug::INIT, "UI file '" << name << "' has been read already. "
1414                                 << "Is this an include loop?");
1415                         return false;
1416                 }
1417         }
1418         uifiles.push_back(uifile);
1419
1420         LYXERR(Debug::INIT, "Found " << name << " in " << ui_path);
1421
1422         Lexer lex(uitags);
1423         lex.setFile(ui_path);
1424         if (!lex.isOK()) {
1425                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
1426                        << endl;
1427         }
1428
1429         if (lyxerr.debugging(Debug::PARSER))
1430                 lex.printTable(lyxerr);
1431
1432         while (lex.isOK()) {
1433                 switch (lex.lex()) {
1434                 case ui_include: {
1435                         lex.next(true);
1436                         QString const file = toqstr(lex.getString());
1437                         if (!readUIFile(file, true))
1438                                 return false;
1439                         break;
1440                 }
1441                 case ui_menuset:
1442                         d->menus_.read(lex);
1443                         break;
1444
1445                 case ui_toolbarset:
1446                         d->toolbars_.readToolbars(lex);
1447                         break;
1448
1449                 case ui_toolbars:
1450                         d->toolbars_.readToolbarSettings(lex);
1451                         break;
1452
1453                 default:
1454                         if (!rtrim(lex.getString()).empty())
1455                                 lex.printError("LyX::ReadUIFile: "
1456                                                "Unknown menu tag: `$$Token'");
1457                         break;
1458                 }
1459         }
1460
1461         if (include)
1462                 return true;
1463
1464         QSettings settings;
1465         settings.beginGroup("ui_files");
1466         bool touched = false;
1467         for (int i = 0; i != uifiles.size(); ++i) {
1468                 QFileInfo fi(uifiles[i]);
1469                 QDateTime const date_value = fi.lastModified();
1470                 QString const name_key = QString::number(i);
1471                 if (!settings.contains(name_key)
1472                  || settings.value(name_key).toString() != uifiles[i]
1473                  || settings.value(name_key + "/date").toDateTime() != date_value) {
1474                         touched = true;
1475                         settings.setValue(name_key, uifiles[i]);
1476                         settings.setValue(name_key + "/date", date_value);
1477                 }
1478         }
1479         settings.endGroup();
1480         if (touched)
1481                 settings.remove("views");
1482
1483         return true;
1484 }
1485
1486
1487 void GuiApplication::onLastWindowClosed()
1488 {
1489         if (d->global_menubar_)
1490                 d->global_menubar_->grabKeyboard();
1491 }
1492
1493
1494 ////////////////////////////////////////////////////////////////////////
1495 //
1496 // X11 specific stuff goes here...
1497
1498 #ifdef Q_WS_X11
1499 bool GuiApplication::x11EventFilter(XEvent * xev)
1500 {
1501         if (!current_view_)
1502                 return false;
1503
1504         switch (xev->type) {
1505         case SelectionRequest: {
1506                 if (xev->xselectionrequest.selection != XA_PRIMARY)
1507                         break;
1508                 LYXERR(Debug::SELECTION, "X requested selection.");
1509                 BufferView * bv = current_view_->view();
1510                 if (bv) {
1511                         docstring const sel = bv->requestSelection();
1512                         if (!sel.empty())
1513                                 d->selection_.put(sel);
1514                 }
1515                 break;
1516         }
1517         case SelectionClear: {
1518                 if (xev->xselectionclear.selection != XA_PRIMARY)
1519                         break;
1520                 LYXERR(Debug::SELECTION, "Lost selection.");
1521                 BufferView * bv = current_view_->view();
1522                 if (bv)
1523                         bv->clearSelection();
1524                 break;
1525         }
1526         }
1527         return false;
1528 }
1529 #endif
1530
1531 } // namespace frontend
1532
1533
1534 void hideDialogs(std::string const & name, Inset * inset)
1535 {
1536         if (theApp())
1537                 theApp()->hideDialogs(name, inset);
1538 }
1539
1540
1541 ////////////////////////////////////////////////////////////////////
1542 //
1543 // Font stuff
1544 //
1545 ////////////////////////////////////////////////////////////////////
1546
1547 frontend::FontLoader & theFontLoader()
1548 {
1549         LASSERT(frontend::guiApp, /**/);
1550         return frontend::guiApp->fontLoader();
1551 }
1552
1553
1554 frontend::FontMetrics const & theFontMetrics(Font const & f)
1555 {
1556         return theFontMetrics(f.fontInfo());
1557 }
1558
1559
1560 frontend::FontMetrics const & theFontMetrics(FontInfo const & f)
1561 {
1562         LASSERT(frontend::guiApp, /**/);
1563         return frontend::guiApp->fontLoader().metrics(f);
1564 }
1565
1566
1567 ////////////////////////////////////////////////////////////////////
1568 //
1569 // Misc stuff
1570 //
1571 ////////////////////////////////////////////////////////////////////
1572
1573 frontend::Clipboard & theClipboard()
1574 {
1575         LASSERT(frontend::guiApp, /**/);
1576         return frontend::guiApp->clipboard();
1577 }
1578
1579
1580 frontend::Selection & theSelection()
1581 {
1582         LASSERT(frontend::guiApp, /**/);
1583         return frontend::guiApp->selection();
1584 }
1585
1586 } // namespace lyx
1587
1588 #include "GuiApplication_moc.cpp"