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 "ColorSet.h"
  19 #include "GuiClipboard.h"
  20 #include "GuiImage.h"
  21 #include "GuiKeySymbol.h"
  22 #include "GuiSelection.h"
  23 #include "GuiView.h"
  24 #include "Menus.h"
  25 #include "qt_helpers.h"
  26 #include "Toolbars.h"
  27
  28 #include "frontends/alert.h"
  29 #include "frontends/Application.h"
  30 #include "frontends/FontLoader.h"
  31 #include "frontends/FontMetrics.h"
  32
  33 #include "Buffer.h"
  34 #include "BufferList.h"
  35 #include "BufferView.h"
  36 #include "Color.h"
  37 #include "Font.h"
  38 #include "FuncRequest.h"
  39 #include "FuncStatus.h"
  40 #include "Language.h"
  41 #include "Lexer.h"
  42 #include "LyX.h"
  43 #include "LyXAction.h"
  44 #include "LyXFunc.h"
  45 #include "LyXRC.h"
  46 #include "Session.h"
  47 #include "version.h"
  48
  49 #include "support/lassert.h"
  50 #include "support/debug.h"
  51 #include "support/ExceptionMessage.h"
  52 #include "support/FileName.h"
  53 #include "support/foreach.h"
  54 #include "support/ForkedCalls.h"
  55 #include "support/gettext.h"
  56 #include "support/lstrings.h"
  57 #include "support/lyxalgo.h" // sorted
  58 #include "support/Messages.h"
  59 #include "support/os.h"
  60 #include "support/Package.h"
  61
  62 #ifdef Q_WS_MACX
  63 #include "support/linkback/LinkBackProxy.h"
  64 #endif
  65
  66 #include <queue>
  67
  68 #include <QByteArray>
  69 #include <QClipboard>
  70 #include <QDateTime>
  71 #include <QDir>
  72 #include <QEventLoop>
  73 #include <QFileOpenEvent>
  74 #include <QFileInfo>
  75 #include <QHash>
  76 #include <QIcon>
  77 #include <QImageReader>
  78 #include <QLocale>
  79 #include <QLibraryInfo>
  80 #include <QList>
  81 #include <QMacPasteboardMime>
  82 #include <QMenuBar>
  83 #include <QMimeData>
  84 #include <QObject>
  85 #include <QPixmap>
  86 #include <QPixmapCache>
  87 #include <QRegExp>
  88 #include <QSessionManager>
  89 #include <QSettings>
  90 #include <QSocketNotifier>
  91 #include <QSortFilterProxyModel>
  92 #include <QStandardItemModel>
  93 #include <QTextCodec>
  94 #include <QTimer>
  95 #include <QTranslator>
  96 #include <QWidget>
  97
  98 #ifdef Q_WS_X11
  99 #include <X11/Xatom.h>
 100 #include <X11/Xlib.h>
 101 #undef CursorShape
 102 #undef None
 103 #endif
 104
 105 #ifdef Q_WS_WIN
 106 #include <QWindowsMime>
 107 #ifdef Q_CC_GNU
 108 #include <wtypes.h>
 109 #endif
 110 #include <objidl.h>
 111 #endif // Q_WS_WIN
 112
 113 #include <boost/bind.hpp>
 114 #include <boost/crc.hpp>
 115
 116 #include <exception>
 117 #include <vector>
 118
 119 using namespace std;
 120 using namespace lyx::support;
 121
 122
 123 static void initializeResources()
 124 {
 125         static bool initialized = false;
 126         if (!initialized) {
 127                 Q_INIT_RESOURCE(Resources);
 128                 initialized = true;
 129         }
 130 }
 131
 132
 133 namespace lyx {
 134
 135 frontend::Application * createApplication(int & argc, char * argv[])
 136 {
 137 #ifndef Q_WS_X11
 138         // prune -geometry argument(s) by shifting
 139         // the following ones 2 places down.
 140         for (int i = 0 ; i < argc ; ++i) {
 141                 if (strcmp(argv[i], "-geometry") == 0) {
 142                         int const remove = (i+1) < argc ? 2 : 1;
 143                         argc -= remove;
 144                         for (int j = i; j < argc; ++j)
 145                                 argv[j] = argv[j + remove];
 146                         --i;
 147                 }
 148         }
 149 #endif
 150         return new frontend::GuiApplication(argc, argv);
 151 }
 152
 153 namespace frontend {
 154
 155
 156 /// Return the list of loadable formats.
 157 vector<string> loadableImageFormats()
 158 {
 159         vector<string> fmts;
 160
 161         QList<QByteArray> qt_formats = QImageReader::supportedImageFormats();
 162
 163         LYXERR(Debug::GRAPHICS,
 164                 "\nThe image loader can load the following directly:\n");
 165
 166         if (qt_formats.empty())
 167                 LYXERR(Debug::GRAPHICS, "\nQt4 Problem: No Format available!");
 168
 169         for (QList<QByteArray>::const_iterator it = qt_formats.begin(); it != qt_formats.end(); ++it) {
 170
 171                 LYXERR(Debug::GRAPHICS, (const char *) *it << ", ");
 172
 173                 string ext = ascii_lowercase((const char *) *it);
 174                 // special case
 175                 if (ext == "jpeg")
 176                         ext = "jpg";
 177                 fmts.push_back(ext);
 178         }
 179
 180         return fmts;
 181 }
 182
 183
 184 ////////////////////////////////////////////////////////////////////////
 185 //
 186 // Icon loading support code
 187 //
 188 ////////////////////////////////////////////////////////////////////////
 189
 190 namespace {
 191
 192 struct PngMap {
 193         QString key;
 194         QString value;
 195 };
 196
 197
 198 bool operator<(PngMap const & lhs, PngMap const & rhs)
 199 {
 200         return lhs.key < rhs.key;
 201 }
 202
 203
 204 class CompareKey {
 205 public:
 206         CompareKey(QString const & name) : name_(name) {}
 207         bool operator()(PngMap const & other) const { return other.key == name_; }
 208 private:
 209         QString const name_;
 210 };
 211
 212
 213 // this must be sorted alphabetically
 214 // Upper case comes before lower case
 215 PngMap sorted_png_map[] = {
 216         { "Bumpeq", "bumpeq2" },
 217         { "Cap", "cap2" },
 218         { "Cup", "cup2" },
 219         { "Delta", "delta2" },
 220         { "Downarrow", "downarrow2" },
 221         { "Gamma", "gamma2" },
 222         { "Lambda", "lambda2" },
 223         { "Leftarrow", "leftarrow2" },
 224         { "Leftrightarrow", "leftrightarrow2" },
 225         { "Longleftarrow", "longleftarrow2" },
 226         { "Longleftrightarrow", "longleftrightarrow2" },
 227         { "Longrightarrow", "longrightarrow2" },
 228         { "Omega", "omega2" },
 229         { "Phi", "phi2" },
 230         { "Pi", "pi2" },
 231         { "Psi", "psi2" },
 232         { "Rightarrow", "rightarrow2" },
 233         { "Sigma", "sigma2" },
 234         { "Subset", "subset2" },
 235         { "Supset", "supset2" },
 236         { "Theta", "theta2" },
 237         { "Uparrow", "uparrow2" },
 238         { "Updownarrow", "updownarrow2" },
 239         { "Upsilon", "upsilon2" },
 240         { "Vdash", "vdash3" },
 241         { "Vert", "vert2" },
 242         { "Xi", "xi2" },
 243         { "nLeftarrow", "nleftarrow2" },
 244         { "nLeftrightarrow", "nleftrightarrow2" },
 245         { "nRightarrow", "nrightarrow2" },
 246         { "nVDash", "nvdash3" },
 247         { "nvDash", "nvdash2" },
 248         { "textrm \\AA", "textrm_AA"},
 249         { "textrm \\O", "textrm_O"},
 250         { "vDash", "vdash2" }
 251 };
 252
 253 size_t const nr_sorted_png_map = sizeof(sorted_png_map) / sizeof(PngMap);
 254
 255
 256 QString findPng(QString const & name)
 257 {
 258         PngMap const * const begin = sorted_png_map;
 259         PngMap const * const end = begin + nr_sorted_png_map;
 260         LASSERT(sorted(begin, end), /**/);
 261
 262         PngMap const * const it = find_if(begin, end, CompareKey(name));
 263
 264         QString png_name;
 265         if (it != end) {
 266                 png_name = it->value;
 267         } else {
 268                 png_name = name;
 269                 png_name.replace('_', "underscore");
 270                 png_name.replace(' ', '_');
 271
 272                 // This way we can have "math-delim { }" on the toolbar.
 273                 png_name.replace('(', "lparen");
 274                 png_name.replace(')', "rparen");
 275                 png_name.replace('[', "lbracket");
 276                 png_name.replace(']', "rbracket");
 277                 png_name.replace('{', "lbrace");
 278                 png_name.replace('}', "rbrace");
 279                 png_name.replace('|', "bars");
 280                 png_name.replace(',', "thinspace");
 281                 png_name.replace(':', "mediumspace");
 282                 png_name.replace(';', "thickspace");
 283                 png_name.replace('!', "negthinspace");
 284         }
 285
 286         LYXERR(Debug::GUI, "findPng(" << name << ")\n"
 287                 << "Looking for math PNG called \"" << png_name << '"');
 288         return png_name;
 289 }
 290
 291 } // namespace anon
 292
 293
 294 QString iconName(FuncRequest const & f, bool unknown)
 295 {
 296         initializeResources();
 297         QString name1;
 298         QString name2;
 299         QString path;
 300         switch (f.action) {
 301         case LFUN_MATH_INSERT:
 302                 if (!f.argument().empty()) {
 303                         path = "math/";
 304                         name1 = findPng(toqstr(f.argument()).mid(1));
 305                 }
 306                 break;
 307         case LFUN_MATH_DELIM:
 308         case LFUN_MATH_BIGDELIM:
 309                 path = "math/";
 310                 name1 = findPng(toqstr(f.argument()));
 311                 break;
 312         case LFUN_CALL:
 313                 path = "commands/";
 314                 name1 = toqstr(f.argument());
 315                 break;
 316         case LFUN_COMMAND_ALTERNATIVES: {
 317                 // use the first of the alternative commands
 318                 docstring firstcom;
 319                 docstring dummy = split(f.argument(), firstcom, ';');
 320                 name1 = toqstr(firstcom);
 321                 name1.replace(' ', '_');
 322                 break;
 323         }
 324         default:
 325                 name2 = toqstr(lyxaction.getActionName(f.action));
 326                 name1 = name2;
 327
 328                 if (!f.argument().empty()) {
 329                         name1 = name2 + ' ' + toqstr(f.argument());
 330                         name1.replace(' ', '_');
 331                         name1.replace('\\', "backslash");
 332                 }
 333         }
 334
 335         FileName fname = libFileSearch("images/" + path, name1, "png");
 336         if (fname.exists())
 337                 return toqstr(fname.absFilename());
 338
 339         fname = libFileSearch("images/" + path, name2, "png");
 340         if (fname.exists())
 341                 return toqstr(fname.absFilename());
 342
 343         path = ":/images/" + path;
 344         QDir res(path);
 345         if (!res.exists()) {
 346                 LYXERR0("Directory " << path << " not found in resource!");
 347                 return QString();
 348         }
 349         name1 += ".png";
 350         if (res.exists(name1))
 351                 return path + name1;
 352
 353         name2 += ".png";
 354         if (res.exists(name2))
 355                 return path + name2;
 356
 357         LYXERR(Debug::GUI, "Cannot find icon with filename "
 358                            << "\"" << name1 << "\""
 359                            << " or filename "
 360                            << "\"" << name2 << "\""
 361                            << " for command \""
 362                            << lyxaction.getActionName(f.action)
 363                            << '(' << to_utf8(f.argument()) << ")\"");
 364
 365         if (unknown) {
 366                 fname = libFileSearch(QString("images/"), "unknown", "png");
 367                 if (fname.exists())
 368                         return toqstr(fname.absFilename());
 369                 return QString(":/images/unknown.png");
 370         }
 371
 372         return QString();
 373 }
 374
 375 QPixmap getPixmap(QString const & path, QString const & name, QString const & ext)
 376 {
 377         QPixmap pixmap;
 378         FileName fname = libFileSearch(path, name, ext);
 379         QString path1 = toqstr(fname.absFilename());
 380         QString path2 = ":/" + path + name + "." + ext;
 381
 382         if (pixmap.load(path1)) {
 383                 return pixmap;
 384         }
 385         else if (pixmap.load(path2)) {
 386                 return pixmap;
 387         }
 388
 389         LYXERR0("Cannot load pixmap \""
 390                 << path << name << '.' << ext
 391                 << "\", please verify resource system!");
 392
 393         return QPixmap();
 394 }
 395
 396 QIcon getIcon(FuncRequest const & f, bool unknown)
 397 {
 398         QString icon = iconName(f, unknown);
 399         if (icon.isEmpty())
 400                 return QIcon();
 401
 402         //LYXERR(Debug::GUI, "Found icon: " << icon);
 403         QPixmap pm;
 404         if (!pm.load(icon)) {
 405                 LYXERR0("Cannot load icon " << icon << " please verify resource system!");
 406                 return QIcon();
 407         }
 408
 409         return QIcon(pm);
 410 }
 411
 412
 413 ////////////////////////////////////////////////////////////////////////
 414 //
 415 // LyX server support code.
 416 //
 417 ////////////////////////////////////////////////////////////////////////
 418
 419 class SocketNotifier : public QSocketNotifier
 420 {
 421 public:
 422         /// connect a connection notification from the LyXServerSocket
 423         SocketNotifier(QObject * parent, int fd, Application::SocketCallback func)
 424                 : QSocketNotifier(fd, QSocketNotifier::Read, parent), func_(func)
 425         {}
 426
 427 public:
 428         /// The callback function
 429         Application::SocketCallback func_;
 430 };
 431
 432
 433 ////////////////////////////////////////////////////////////////////////
 434 //
 435 // Mac specific stuff goes here...
 436 //
 437 ////////////////////////////////////////////////////////////////////////
 438
 439 class MenuTranslator : public QTranslator
 440 {
 441 public:
 442         MenuTranslator(QObject * parent)
 443                 : QTranslator(parent)
 444         {}
 445
 446         QString translate(const char * /*context*/,
 447           const char * sourceText,
 448           const char * /*comment*/ = 0)
 449         {
 450                 string const s = sourceText;
 451                 if (s == N_("About %1") || s == N_("Preferences")
 452                                 || s == N_("Reconfigure") || s == N_("Quit %1"))
 453                         return qt_(s);
 454                 else
 455                         return QString();
 456         }
 457 };
 458
 459 class GlobalMenuBar : public QMenuBar
 460 {
 461 public:
 462         ///
 463         GlobalMenuBar() : QMenuBar(0) {}
 464
 465         ///
 466         bool event(QEvent * e)
 467         {
 468                 if (e->type() == QEvent::ShortcutOverride) {
 469                         //          && activeWindow() == 0) {
 470                         QKeyEvent * ke = static_cast<QKeyEvent*>(e);
 471                         KeySymbol sym;
 472                         setKeySymbol(&sym, ke);
 473                         theLyXFunc().processKeySym(sym, q_key_state(ke->modifiers()));
 474                         e->accept();
 475                         return true;
 476                 }
 477                 return false;
 478         }
 479 };
 480
 481 #ifdef Q_WS_MACX
 482 // QMacPasteboardMimeGraphics can only be compiled on Mac.
 483
 484 class QMacPasteboardMimeGraphics : public QMacPasteboardMime
 485 {
 486 public:
 487         QMacPasteboardMimeGraphics()
 488                 : QMacPasteboardMime(MIME_QT_CONVERTOR|MIME_ALL)
 489         {}
 490
 491         QString convertorName() { return "Graphics"; }
 492
 493         QString flavorFor(QString const & mime)
 494         {
 495                 LYXERR(Debug::ACTION, "flavorFor " << mime);
 496                 if (mime == pdfMimeType())
 497                         return QLatin1String("com.adobe.pdf");
 498                 return QString();
 499         }
 500
 501         QString mimeFor(QString flav)
 502         {
 503                 LYXERR(Debug::ACTION, "mimeFor " << flav);
 504                 if (flav == QLatin1String("com.adobe.pdf"))
 505                         return pdfMimeType();
 506                 return QString();
 507         }
 508
 509         bool canConvert(QString const & mime, QString flav)
 510         {
 511                 return mimeFor(flav) == mime;
 512         }
 513
 514         QVariant convertToMime(QString const & /*mime*/, QList<QByteArray> data,
 515                 QString /*flav*/)
 516         {
 517                 if(data.count() > 1)
 518                         qWarning("QMacPasteboardMimeGraphics: Cannot handle multiple member data");
 519                 return data.first();
 520         }
 521
 522         QList<QByteArray> convertFromMime(QString const & /*mime*/,
 523                 QVariant data, QString /*flav*/)
 524         {
 525                 QList<QByteArray> ret;
 526                 ret.append(data.toByteArray());
 527                 return ret;
 528         }
 529 };
 530 #endif
 531
 532 ///////////////////////////////////////////////////////////////
 533 //
 534 // You can find more platform specific stuff at the end of this file...
 535 //
 536 ///////////////////////////////////////////////////////////////
 537
 538 ////////////////////////////////////////////////////////////////////////
 539 // Windows specific stuff goes here...
 540
 541 #ifdef Q_WS_WIN
 542 // QWindowsMimeMetafile can only be compiled on Windows.
 543
 544 static FORMATETC cfFromMime(QString const & mimetype)
 545 {
 546         FORMATETC formatetc;
 547         if (mimetype == emfMimeType()) {
 548                 formatetc.cfFormat = CF_ENHMETAFILE;
 549                 formatetc.tymed = TYMED_ENHMF;
 550         } else if (mimetype == wmfMimeType()) {
 551                 formatetc.cfFormat = CF_METAFILEPICT;
 552                 formatetc.tymed = TYMED_MFPICT;
 553         }
 554         formatetc.ptd = 0;
 555         formatetc.dwAspect = DVASPECT_CONTENT;
 556         formatetc.lindex = -1;
 557         return formatetc;
 558 }
 559
 560
 561 class QWindowsMimeMetafile : public QWindowsMime {
 562 public:
 563         QWindowsMimeMetafile() {}
 564
 565         bool canConvertFromMime(FORMATETC const & formatetc,
 566                 QMimeData const * mimedata) const
 567         {
 568                 return false;
 569         }
 570
 571         bool canConvertToMime(QString const & mimetype,
 572                 IDataObject * pDataObj) const
 573         {
 574                 if (mimetype != emfMimeType() && mimetype != wmfMimeType())
 575                         return false;
 576                 FORMATETC formatetc = cfFromMime(mimetype);
 577                 return pDataObj->QueryGetData(&formatetc) == S_OK;
 578         }
 579
 580         bool convertFromMime(FORMATETC const & formatetc,
 581                 const QMimeData * mimedata, STGMEDIUM * pmedium) const
 582         {
 583                 return false;
 584         }
 585
 586         QVariant convertToMime(QString const & mimetype, IDataObject * pDataObj,
 587                 QVariant::Type preferredType) const
 588         {
 589                 QByteArray data;
 590                 if (!canConvertToMime(mimetype, pDataObj))
 591                         return data;
 592
 593                 FORMATETC formatetc = cfFromMime(mimetype);
 594                 STGMEDIUM s;
 595                 if (pDataObj->GetData(&formatetc, &s) != S_OK)
 596                         return data;
 597
 598                 int dataSize;
 599                 if (s.tymed == TYMED_ENHMF) {
 600                         dataSize = GetEnhMetaFileBits(s.hEnhMetaFile, 0, 0);
 601                         data.resize(dataSize);
 602                         dataSize = GetEnhMetaFileBits(s.hEnhMetaFile, dataSize,
 603                                 (LPBYTE)data.data());
 604                 } else if (s.tymed == TYMED_MFPICT) {
 605                         dataSize = GetMetaFileBitsEx((HMETAFILE)s.hMetaFilePict, 0, 0);
 606                         data.resize(dataSize);
 607                         dataSize = GetMetaFileBitsEx((HMETAFILE)s.hMetaFilePict, dataSize,
 608                                 (LPBYTE)data.data());
 609                 }
 610                 data.detach();
 611                 ReleaseStgMedium(&s);
 612
 613                 return data;
 614         }
 615
 616
 617         QVector<FORMATETC> formatsForMime(QString const & mimetype,
 618                 QMimeData const * mimedata) const
 619         {
 620                 QVector<FORMATETC> formats;
 621                 if (mimetype == emfMimeType() || mimetype == wmfMimeType())
 622                         formats += cfFromMime(mimetype);
 623                 return formats;
 624         }
 625
 626         QString mimeForFormat(FORMATETC const & formatetc) const
 627         {
 628                 switch (formatetc.cfFormat) {
 629                 case CF_ENHMETAFILE:
 630                         return emfMimeType();
 631                 case CF_METAFILEPICT:
 632                         return wmfMimeType();
 633                 }
 634                 return QString();
 635         }
 636 };
 637
 638 #endif // Q_WS_WIN
 639
 640 ////////////////////////////////////////////////////////////////////////
 641 // GuiApplication::Private definition and implementation.
 642 ////////////////////////////////////////////////////////////////////////
 643
 644 struct GuiApplication::Private
 645 {
 646         Private(): language_model_(0), global_menubar_(0)
 647         {
 648         #ifdef Q_WS_WIN
 649                 /// WMF Mime handler for Windows clipboard.
 650                 wmf_mime_ = new QWindowsMimeMetafile();
 651         #endif
 652         }
 653
 654         ///
 655         QSortFilterProxyModel * language_model_;
 656         ///
 657         GuiClipboard clipboard_;
 658         ///
 659         GuiSelection selection_;
 660         ///
 661         FontLoader font_loader_;
 662         ///
 663         ColorCache color_cache_;
 664         ///
 665         QTranslator qt_trans_;
 666         ///
 667         QHash<int, SocketNotifier *> socket_notifiers_;
 668         ///
 669         Menus menus_;
 670         ///
 671         /// The global instance
 672         Toolbars toolbars_;
 673
 674         /// this timer is used for any regular events one wants to
 675         /// perform. at present it is used to check if forked processes
 676         /// are done.
 677         QTimer general_timer_;
 678
 679         /// delayed FuncRequests
 680         std::queue<FuncRequest> func_request_queue_;
 681
 682         /// Multiple views container.
 683         /**
 684         * Warning: This must not be a smart pointer as the destruction of the
 685         * object is handled by Qt when the view is closed
 686         * \sa Qt::WA_DeleteOnClose attribute.
 687         */
 688         QHash<int, GuiView *> views_;
 689
 690         /// Only used on mac.
 691         GlobalMenuBar * global_menubar_;
 692
 693 #ifdef Q_WS_MACX
 694         /// Linkback mime handler for MacOSX.
 695         QMacPasteboardMimeGraphics mac_pasteboard_mime_;
 696 #endif
 697
 698 #ifdef Q_WS_WIN
 699         /// WMF Mime handler for Windows clipboard.
 700         QWindowsMimeMetafile * wmf_mime_;
 701 #endif
 702 };
 703
 704
 705 GuiApplication * guiApp;
 706
 707 GuiApplication::~GuiApplication()
 708 {
 709 #ifdef Q_WS_MACX
 710         closeAllLinkBackLinks();
 711 #endif
 712         delete d;
 713 }
 714
 715
 716 GuiApplication::GuiApplication(int & argc, char ** argv)
 717         : QApplication(argc, argv), current_view_(0),
 718           d(new GuiApplication::Private)
 719 {
 720         QString app_name = "LyX";
 721         QCoreApplication::setOrganizationName(app_name);
 722         QCoreApplication::setOrganizationDomain("lyx.org");
 723         QCoreApplication::setApplicationName(lyx_package);
 724
 725         // Install translator for GUI elements.
 726         installTranslator(&d->qt_trans_);
 727
 728         // FIXME: quitOnLastWindowClosed is true by default. We should have a
 729         // lyxrc setting for this in order to let the application stay resident.
 730         // But then we need some kind of dock icon, at least on Windows.
 731         /*
 732         if (lyxrc.quit_on_last_window_closed)
 733                 setQuitOnLastWindowClosed(false);
 734         */
 735 #ifdef Q_WS_MACX
 736         // FIXME: Do we need a lyxrc setting for this on Mac? This behaviour
 737         // seems to be the default case for applications like LyX.
 738         setQuitOnLastWindowClosed(false);
 739
 740         // This allows to translate the strings that appear in the LyX menu.
 741         /// A translator suitable for the entries in the LyX menu.
 742         /// Only needed with Qt/Mac.
 743         installTranslator(new MenuTranslator(this));
 744 #endif
 745
 746 #ifdef Q_WS_X11
 747         // doubleClickInterval() is 400 ms on X11 which is just too long.
 748         // On Windows and Mac OS X, the operating system's value is used.
 749         // On Microsoft Windows, calling this function sets the double
 750         // click interval for all applications. So we don't!
 751         QApplication::setDoubleClickInterval(300);
 752 #endif
 753
 754         connect(this, SIGNAL(lastWindowClosed()), this, SLOT(onLastWindowClosed()));
 755
 756         // needs to be done before reading lyxrc
 757         QWidget w;
 758         lyxrc.dpi = (w.logicalDpiX() + w.logicalDpiY()) / 2;
 759
 760         guiApp = this;
 761
 762         // Set the cache to 5120 kilobytes which corresponds to screen size of
 763         // 1280 by 1024 pixels with a color depth of 32 bits.
 764         QPixmapCache::setCacheLimit(5120);
 765
 766         // Initialize RC Fonts
 767         if (lyxrc.roman_font_name.empty())
 768                 lyxrc.roman_font_name = fromqstr(romanFontName());
 769
 770         if (lyxrc.sans_font_name.empty())
 771                 lyxrc.sans_font_name = fromqstr(sansFontName());
 772
 773         if (lyxrc.typewriter_font_name.empty())
 774                 lyxrc.typewriter_font_name = fromqstr(typewriterFontName());
 775
 776         d->general_timer_.setInterval(500);
 777         connect(&d->general_timer_, SIGNAL(timeout()),
 778                 this, SLOT(handleRegularEvents()));
 779         d->general_timer_.start();
 780 }
 781
 782
 783 GuiApplication * theGuiApp()
 784 {
 785         return dynamic_cast<GuiApplication *>(theApp());
 786 }
 787
 788
 789 void GuiApplication::clearSession()
 790 {
 791         QSettings settings;
 792         settings.clear();
 793 }
 794
 795
 796 docstring GuiApplication::iconName(FuncRequest const & f, bool unknown)
 797 {
 798         return qstring_to_ucs4(lyx::frontend::iconName(f, unknown));
 799 }
 800
 801
 802
 803 bool GuiApplication::getStatus(FuncRequest const & cmd, FuncStatus & flag) const
 804 {
 805         bool enable = true;
 806
 807         switch(cmd.action) {
 808
 809         case LFUN_WINDOW_CLOSE:
 810                 enable = d->views_.size() > 0;
 811                 break;
 812
 813         case LFUN_BUFFER_NEW:
 814         case LFUN_BUFFER_NEW_TEMPLATE:
 815         case LFUN_FILE_OPEN:
 816         case LFUN_SCREEN_FONT_UPDATE:
 817         case LFUN_SET_COLOR:
 818         case LFUN_WINDOW_NEW:
 819         case LFUN_LYX_QUIT:
 820                 enable = true;
 821                 break;
 822
 823         default:
 824                 return false;
 825         }
 826
 827         if (!enable)
 828                 flag.setEnabled(false);
 829
 830         return true;
 831 }
 832
 833
 834 bool GuiApplication::dispatch(FuncRequest const & cmd)
 835 {
 836         switch (cmd.action) {
 837
 838         case LFUN_WINDOW_NEW:
 839                 createView(toqstr(cmd.argument()));
 840                 break;
 841
 842         case LFUN_WINDOW_CLOSE:
 843                 // update bookmark pit of the current buffer before window close
 844                 for (size_t i = 0; i < theSession().bookmarks().size(); ++i)
 845                         theLyXFunc().gotoBookmark(i+1, false, false);
 846                 current_view_->close();
 847                 break;
 848
 849         case LFUN_LYX_QUIT:
 850                 // quitting is triggered by the gui code
 851                 // (leaving the event loop).
 852                 if (current_view_)
 853                         current_view_->message(from_utf8(N_("Exiting.")));
 854                 if (closeAllViews())
 855                         quit();
 856                 break;
 857
 858         case LFUN_SCREEN_FONT_UPDATE: {
 859                 // handle the screen font changes.
 860                 d->font_loader_.update();
 861                 // Backup current_view_
 862                 GuiView * view = current_view_;
 863                 // Set current_view_ to zero to forbid GuiWorkArea::redraw()
 864                 // to skip the refresh.
 865                 current_view_ = 0;
 866                 BufferList::iterator it = theBufferList().begin();
 867                 BufferList::iterator const end = theBufferList().end();
 868                 for (; it != end; ++it)
 869                         (*it)->changed();
 870                 // Restore current_view_
 871                 current_view_ = view;
 872                 break;
 873         }
 874
 875         case LFUN_BUFFER_NEW:
 876                 if (d->views_.empty()
 877                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 878                         createView(QString(), false); // keep hidden
 879                         current_view_->newDocument(to_utf8(cmd.argument()), false);
 880                         current_view_->show();
 881                         setActiveWindow(current_view_);
 882                 } else {
 883                         current_view_->newDocument(to_utf8(cmd.argument()), false);
 884                 }
 885                 break;
 886
 887         case LFUN_BUFFER_NEW_TEMPLATE:
 888                 if (d->views_.empty()
 889                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 890                         createView();
 891                         current_view_->newDocument(to_utf8(cmd.argument()), true);
 892                         if (!current_view_->buffer())
 893                                 current_view_->close();
 894                 } else {
 895                         current_view_->newDocument(to_utf8(cmd.argument()), true);
 896                 }
 897                 break;
 898
 899         case LFUN_FILE_OPEN:
 900                 if (d->views_.empty()
 901                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 902                         string const fname = to_utf8(cmd.argument());
 903                         // We want the ui session to be saved per document and not per
 904                         // window number. The filename crc is a good enough identifier.
 905                         boost::crc_32_type crc;
 906                         crc = for_each(fname.begin(), fname.end(), crc);
 907                         createView(crc.checksum());
 908                         current_view_->openDocument(fname);
 909                         if (current_view_ && !current_view_->buffer())
 910                                 current_view_->close();
 911                 } else
 912                         current_view_->openDocument(to_utf8(cmd.argument()));
 913                 break;
 914
 915         case LFUN_SET_COLOR: {
 916                 string lyx_name;
 917                 string const x11_name = split(to_utf8(cmd.argument()), lyx_name, ' ');
 918                 if (lyx_name.empty() || x11_name.empty()) {
 919                         current_view_->message(
 920                                 _("Syntax: set-color <lyx_name> <x11_name>"));
 921                         break;
 922                 }
 923
 924                 string const graphicsbg = lcolor.getLyXName(Color_graphicsbg);
 925                 bool const graphicsbg_changed = lyx_name == graphicsbg
 926                         && x11_name != graphicsbg;
 927                 if (graphicsbg_changed) {
 928                         // FIXME: The graphics cache no longer has a changeDisplay method.
 929 #if 0
 930                         graphics::GCache::get().changeDisplay(true);
 931 #endif
 932                 }
 933
 934                 if (!lcolor.setColor(lyx_name, x11_name)) {
 935                         current_view_->message(
 936                                         bformat(_("Set-color \"%1$s\" failed "
 937                                                                "- color is undefined or "
 938                                                                "may not be redefined"),
 939                                                                    from_utf8(lyx_name)));
 940                         break;
 941                 }
 942                 // Make sure we don't keep old colors in cache.
 943                 d->color_cache_.clear();
 944                 break;
 945         }
 946
 947         default:
 948                 // Notify the caller that the action has not been dispatched.
 949                 return false;
 950         }
 951
 952         // The action has been dispatched.
 953         return true;
 954 }
 955
 956
 957 void GuiApplication::dispatchDelayed(FuncRequest const & func)
 958 {
 959         d->func_request_queue_.push(func);
 960         QTimer::singleShot(0, this, SLOT(processFuncRequestQueue()));
 961 }
 962
 963
 964 void GuiApplication::resetGui()
 965 {
 966         // Set the language defined by the user.
 967         setGuiLanguage();
 968
 969         // Read menus
 970         if (!readUIFile(toqstr(lyxrc.ui_file)))
 971                 // Gives some error box here.
 972                 return;
 973
 974         if (d->global_menubar_)
 975                 d->menus_.fillMenuBar(d->global_menubar_, 0, false);
 976
 977         QHash<int, GuiView *>::iterator it;
 978         for (it = d->views_.begin(); it != d->views_.end(); ++it) {
 979                 GuiView * gv = *it;
 980                 gv->setLayoutDirection(layoutDirection());
 981                 gv->resetDialogs();
 982         }
 983
 984         dispatch(FuncRequest(LFUN_SCREEN_FONT_UPDATE));
 985 }
 986
 987
 988 void GuiApplication::createView(int view_id)
 989 {
 990         createView(QString(), true, view_id);
 991 }
 992
 993
 994 void GuiApplication::createView(QString const & geometry_arg, bool autoShow,
 995         int view_id)
 996 {
 997         // release the keyboard which might have been grabed by the global
 998         // menubar on Mac to catch shortcuts even without any GuiView.
 999         if (d->global_menubar_)
1000                 d->global_menubar_->releaseKeyboard();
1001
1002         // create new view
1003         int id = view_id;
1004         if (id == 0) {
1005                 while (d->views_.find(id) != d->views_.end())
1006                         id++;
1007         }
1008         LYXERR(Debug::GUI, "About to create new window with ID " << id);
1009         GuiView * view = new GuiView(id);
1010         // register view
1011         d->views_[id] = view;
1012
1013         if (autoShow) {
1014                 view->show();
1015                 setActiveWindow(view);
1016         }
1017
1018         if (!geometry_arg.isEmpty()) {
1019 #ifdef Q_WS_WIN
1020                 int x, y;
1021                 int w, h;
1022                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
1023                 re.indexIn(geometry_arg);
1024                 w = re.cap(1).toInt();
1025                 h = re.cap(2).toInt();
1026                 x = re.cap(3).toInt();
1027                 y = re.cap(4).toInt();
1028                 view->setGeometry(x, y, w, h);
1029 #endif
1030         }
1031         view->setFocus();
1032 }
1033
1034
1035 Clipboard & GuiApplication::clipboard()
1036 {
1037         return d->clipboard_;
1038 }
1039
1040
1041 Selection & GuiApplication::selection()
1042 {
1043         return d->selection_;
1044 }
1045
1046
1047 FontLoader & GuiApplication::fontLoader()
1048 {
1049         return d->font_loader_;
1050 }
1051
1052
1053 Toolbars const & GuiApplication::toolbars() const
1054 {
1055         return d->toolbars_;
1056 }
1057
1058
1059 Toolbars & GuiApplication::toolbars()
1060 {
1061         return d->toolbars_;
1062 }
1063
1064
1065 Menus const & GuiApplication::menus() const
1066 {
1067         return d->menus_;
1068 }
1069
1070
1071 Menus & GuiApplication::menus()
1072 {
1073         return d->menus_;
1074 }
1075
1076
1077 QList<int> GuiApplication::viewIds() const
1078 {
1079         return d->views_.keys();
1080 }
1081
1082
1083 ColorCache & GuiApplication::colorCache()
1084 {
1085         return d->color_cache_;
1086 }
1087
1088
1089 int GuiApplication::exec()
1090 {
1091         // asynchronously handle batch commands. This event will be in
1092         // the event queue in front of other asynchronous events. Hence,
1093         // we can assume in the latter that the gui is setup already.
1094         QTimer::singleShot(0, this, SLOT(execBatchCommands()));
1095
1096         return QApplication::exec();
1097 }
1098
1099
1100 void GuiApplication::exit(int status)
1101 {
1102         QApplication::exit(status);
1103 }
1104
1105
1106 void GuiApplication::setGuiLanguage()
1107 {
1108         // Set the language defined by the user.
1109         setRcGuiLanguage();
1110
1111         QString const default_language = toqstr(Messages::defaultLanguage());
1112         LYXERR(Debug::LOCALE, "Tring to set default locale to: " << default_language);
1113         QLocale const default_locale(default_language);
1114         QLocale::setDefault(default_locale);
1115
1116         // install translation file for Qt built-in dialogs
1117         QString const language_name = QString("qt_") + default_locale.name();
1118
1119         // language_name can be short (e.g. qt_zh) or long (e.g. qt_zh_CN).
1120         // Short-named translator can be loaded from a long name, but not the
1121         // opposite. Therefore, long name should be used without truncation.
1122         // c.f. http://doc.trolltech.com/4.1/qtranslator.html#load
1123         if (!d->qt_trans_.load(language_name,
1124                         QLibraryInfo::location(QLibraryInfo::TranslationsPath))) {
1125                 LYXERR(Debug::LOCALE, "Could not find  Qt translations for locale "
1126                         << language_name);
1127         } else {
1128                 LYXERR(Debug::LOCALE, "Successfully installed Qt translations for locale "
1129                         << language_name);
1130         }
1131
1132         switch (default_locale.language()) {
1133         case QLocale::Arabic :
1134         case QLocale::Hebrew :
1135         case QLocale::Persian :
1136         case QLocale::Urdu :
1137         setLayoutDirection(Qt::RightToLeft);
1138                 break;
1139         default:
1140         setLayoutDirection(Qt::LeftToRight);
1141         }
1142 }
1143
1144
1145 void GuiApplication::processFuncRequestQueue()
1146 {
1147         while (!d->func_request_queue_.empty()) {
1148                 lyx::dispatch(d->func_request_queue_.back());
1149                 d->func_request_queue_.pop();
1150         }
1151 }
1152
1153
1154 void GuiApplication::execBatchCommands()
1155 {
1156         setGuiLanguage();
1157
1158         // Read menus
1159         if (!readUIFile(toqstr(lyxrc.ui_file)))
1160                 // Gives some error box here.
1161                 return;
1162
1163 #ifdef Q_WS_MACX
1164         // Create the global default menubar which is shown for the dialogs
1165         // and if no GuiView is visible.
1166         // This must be done after the session was recovered to know the "last files".
1167         d->global_menubar_ = new GlobalMenuBar();
1168         d->menus_.fillMenuBar(d->global_menubar_, 0, true);
1169 #endif
1170
1171         lyx::execBatchCommands();
1172 }
1173
1174
1175 QAbstractItemModel * GuiApplication::languageModel()
1176 {
1177         if (d->language_model_)
1178                 return d->language_model_;
1179
1180         QStandardItemModel * lang_model = new QStandardItemModel(this);
1181         lang_model->insertColumns(0, 1);
1182         int current_row;
1183         Languages::const_iterator it = languages.begin();
1184         Languages::const_iterator end = languages.end();
1185         for (; it != end; ++it) {
1186                 current_row = lang_model->rowCount();
1187                 lang_model->insertRows(current_row, 1);
1188                 QModelIndex item = lang_model->index(current_row, 0);
1189                 lang_model->setData(item, qt_(it->second.display()), Qt::DisplayRole);
1190                 lang_model->setData(item, toqstr(it->second.lang()), Qt::UserRole);
1191         }
1192         d->language_model_ = new QSortFilterProxyModel(this);
1193         d->language_model_->setSourceModel(lang_model);
1194 #if QT_VERSION >= 0x040300
1195         d->language_model_->setSortLocaleAware(true);
1196 #endif
1197         return d->language_model_;
1198 }
1199
1200
1201 void GuiApplication::restoreGuiSession()
1202 {
1203         if (!lyxrc.load_session)
1204                 return;
1205
1206         Session & session = theSession();
1207         LastOpenedSection::LastOpened const & lastopened =
1208                 session.lastOpened().getfiles();
1209
1210         FileName active_file;
1211         // do not add to the lastfile list since these files are restored from
1212         // last session, and should be already there (regular files), or should
1213         // not be added at all (help files).
1214         // Note that we open them in reverse order. This is because we close
1215         // buffers also in reverse order (aesthetically motivated).
1216         for (size_t i = lastopened.size(); i > 0; --i) {
1217                 current_view_->loadDocument(lastopened[i - 1].file_name, false);
1218                 if (lastopened[i - 1].active)
1219                         active_file = lastopened[i - 1].file_name;
1220         }
1221
1222         // Restore last active buffer
1223         Buffer * buffer = theBufferList().getBuffer(active_file);
1224         if (buffer)
1225                 current_view_->setBuffer(buffer);
1226
1227         // clear this list to save a few bytes of RAM
1228         session.lastOpened().clear();
1229 }
1230
1231
1232 QString const GuiApplication::romanFontName()
1233 {
1234         QFont font;
1235         font.setKerning(false);
1236         font.setStyleHint(QFont::Serif);
1237         font.setFamily("serif");
1238
1239         return QFontInfo(font).family();
1240 }
1241
1242
1243 QString const GuiApplication::sansFontName()
1244 {
1245         QFont font;
1246         font.setKerning(false);
1247         font.setStyleHint(QFont::SansSerif);
1248         font.setFamily("sans");
1249
1250         return QFontInfo(font).family();
1251 }
1252
1253
1254 QString const GuiApplication::typewriterFontName()
1255 {
1256         QFont font;
1257         font.setKerning(false);
1258         font.setStyleHint(QFont::TypeWriter);
1259         font.setFamily("monospace");
1260
1261         return QFontInfo(font).family();
1262 }
1263
1264
1265 void GuiApplication::handleRegularEvents()
1266 {
1267         ForkedCallsController::handleCompletedProcesses();
1268 }
1269
1270
1271 bool GuiApplication::event(QEvent * e)
1272 {
1273         switch(e->type()) {
1274         case QEvent::FileOpen: {
1275                 // Open a file; this happens only on Mac OS X for now.
1276                 //
1277                 // We do this asynchronously because on startup the batch
1278                 // commands are not executed here yet and the gui is not ready
1279                 // therefore.
1280                 QFileOpenEvent * foe = static_cast<QFileOpenEvent *>(e);
1281                 dispatchDelayed(FuncRequest(LFUN_FILE_OPEN, qstring_to_ucs4(foe->file())));
1282                 e->accept();
1283                 return true;
1284         }
1285         default:
1286                 return QApplication::event(e);
1287         }
1288 }
1289
1290
1291 bool GuiApplication::notify(QObject * receiver, QEvent * event)
1292 {
1293         try {
1294                 return QApplication::notify(receiver, event);
1295         }
1296         catch (ExceptionMessage const & e) {
1297                 switch(e.type_) {
1298                 case ErrorException:
1299                         emergencyCleanup();
1300                         setQuitOnLastWindowClosed(false);
1301                         closeAllViews();
1302                         Alert::error(e.title_, e.details_);
1303 #ifndef NDEBUG
1304                         // Properly crash in debug mode in order to get a useful backtrace.
1305                         abort();
1306 #endif
1307                         // In release mode, try to exit gracefully.
1308                         this->exit(1);
1309
1310                 case BufferException: {
1311                         Buffer * buf = current_view_->buffer();
1312                         docstring details = e.details_ + '\n';
1313                         details += theBufferList().emergencyWrite(buf);
1314                         theBufferList().release(buf);
1315                         details += "\n" + _("The current document was closed.");
1316                         Alert::error(e.title_, details);
1317                         return false;
1318                 }
1319                 case WarningException:
1320                         Alert::warning(e.title_, e.details_);
1321                         return false;
1322                 }
1323         }
1324         catch (exception const & e) {
1325                 docstring s = _("LyX has caught an exception, it will now "
1326                         "attempt to save all unsaved documents and exit."
1327                         "\n\nException: ");
1328                 s += from_ascii(e.what());
1329                 Alert::error(_("Software exception Detected"), s);
1330                 lyx_exit(1);
1331         }
1332         catch (...) {
1333                 docstring s = _("LyX has caught some really weird exception, it will "
1334                         "now attempt to save all unsaved documents and exit.");
1335                 Alert::error(_("Software exception Detected"), s);
1336                 lyx_exit(1);
1337         }
1338
1339         return false;
1340 }
1341
1342
1343 bool GuiApplication::getRgbColor(ColorCode col, RGBColor & rgbcol)
1344 {
1345         QColor const & qcol = d->color_cache_.get(col);
1346         if (!qcol.isValid()) {
1347                 rgbcol.r = 0;
1348                 rgbcol.g = 0;
1349                 rgbcol.b = 0;
1350                 return false;
1351         }
1352         rgbcol.r = qcol.red();
1353         rgbcol.g = qcol.green();
1354         rgbcol.b = qcol.blue();
1355         return true;
1356 }
1357
1358
1359 string const GuiApplication::hexName(ColorCode col)
1360 {
1361         return ltrim(fromqstr(d->color_cache_.get(col).name()), "#");
1362 }
1363
1364
1365 void GuiApplication::registerSocketCallback(int fd, SocketCallback func)
1366 {
1367         SocketNotifier * sn = new SocketNotifier(this, fd, func);
1368         d->socket_notifiers_[fd] = sn;
1369         connect(sn, SIGNAL(activated(int)), this, SLOT(socketDataReceived(int)));
1370 }
1371
1372
1373 void GuiApplication::socketDataReceived(int fd)
1374 {
1375         d->socket_notifiers_[fd]->func_();
1376 }
1377
1378
1379 void GuiApplication::unregisterSocketCallback(int fd)
1380 {
1381         d->socket_notifiers_.take(fd)->setEnabled(false);
1382 }
1383
1384
1385 void GuiApplication::commitData(QSessionManager & sm)
1386 {
1387         /// The implementation is required to avoid an application exit
1388         /// when session state save is triggered by session manager.
1389         /// The default implementation sends a close event to all
1390         /// visible top level widgets when session managment allows
1391         /// interaction.
1392         /// We are changing that to close all wiew one by one.
1393         /// FIXME: verify if the default implementation is enough now.
1394         if (sm.allowsInteraction() && !closeAllViews())
1395                 sm.cancel();
1396 }
1397
1398
1399 void GuiApplication::unregisterView(GuiView * gv)
1400 {
1401         LASSERT(d->views_[gv->id()] == gv, /**/);
1402         d->views_.remove(gv->id());
1403         if (current_view_ == gv) {
1404                 current_view_ = 0;
1405                 theLyXFunc().setLyXView(0);
1406         }
1407 }
1408
1409
1410 bool GuiApplication::closeAllViews()
1411 {
1412         if (d->views_.empty())
1413                 return true;
1414
1415         // When a view/window was closed before without quitting LyX, there
1416         // are already entries in the lastOpened list.
1417         theSession().lastOpened().clear();
1418
1419         QList<GuiView *> views = d->views_.values();
1420         foreach (GuiView * view, views) {
1421                 if (!view->close())
1422                         return false;
1423         }
1424
1425         d->views_.clear();
1426         return true;
1427 }
1428
1429
1430 GuiView & GuiApplication::view(int id) const
1431 {
1432         LASSERT(d->views_.contains(id), /**/);
1433         return *d->views_.value(id);
1434 }
1435
1436
1437 void GuiApplication::hideDialogs(string const & name, Inset * inset) const
1438 {
1439         QList<GuiView *> views = d->views_.values();
1440         foreach (GuiView * view, views)
1441                 view->hideDialog(name, inset);
1442 }
1443
1444
1445 Buffer const * GuiApplication::updateInset(Inset const * inset) const
1446 {
1447         Buffer const * buffer_ = 0;
1448         QHash<int, GuiView *>::iterator end = d->views_.end();
1449         for (QHash<int, GuiView *>::iterator it = d->views_.begin(); it != end; ++it) {
1450                 if (Buffer const * ptr = (*it)->updateInset(inset))
1451                         buffer_ = ptr;
1452         }
1453         return buffer_;
1454 }
1455
1456
1457 bool GuiApplication::searchMenu(FuncRequest const & func,
1458         docstring_list & names) const
1459 {
1460         return d->menus_.searchMenu(func, names);
1461 }
1462
1463
1464 bool GuiApplication::readUIFile(QString const & name, bool include)
1465 {
1466         LYXERR(Debug::INIT, "About to read " << name << "...");
1467
1468         FileName ui_path;
1469         if (include) {
1470                 ui_path = libFileSearch("ui", name, "inc");
1471                 if (ui_path.empty())
1472                         ui_path = libFileSearch("ui", changeExtension(name, "inc"));
1473         } else {
1474                 ui_path = libFileSearch("ui", name, "ui");
1475         }
1476
1477         if (ui_path.empty()) {
1478                 static const QString defaultUIFile = "default";
1479                 LYXERR(Debug::INIT, "Could not find " << name);
1480                 if (include) {
1481                         Alert::warning(_("Could not find UI definition file"),
1482                                 bformat(_("Error while reading the included file\n%1$s\n"
1483                                         "Please check your installation."), qstring_to_ucs4(name)));
1484                         return false;
1485                 }
1486                 if (name == defaultUIFile) {
1487                         LYXERR(Debug::INIT, "Could not find default UI file!!");
1488                         Alert::warning(_("Could not find default UI file"),
1489                                 _("LyX could not find the default UI file!\n"
1490                                   "Please check your installation."));
1491                         return false;
1492                 }
1493                 Alert::warning(_("Could not find UI definition file"),
1494                 bformat(_("Error while reading the configuration file\n%1$s\n"
1495                         "Falling back to default.\n"
1496                         "Please look under Tools>Preferences>User Interface and\n"
1497                         "check which User Interface file you are using."), qstring_to_ucs4(name)));
1498                 return readUIFile(defaultUIFile, false);
1499         }
1500
1501         // Ensure that a file is read only once (prevents include loops)
1502         static QStringList uifiles;
1503         QString const uifile = toqstr(ui_path.absFilename());
1504         if (uifiles.contains(uifile)) {
1505                 if (!include) {
1506                         // We are reading again the top uifile so reset the safeguard:
1507                         uifiles.clear();
1508                         d->menus_.reset();
1509                         d->toolbars_.reset();
1510                 } else {
1511                         LYXERR(Debug::INIT, "UI file '" << name << "' has been read already. "
1512                                 << "Is this an include loop?");
1513                         return false;
1514                 }
1515         }
1516         uifiles.push_back(uifile);
1517
1518         LYXERR(Debug::INIT, "Found " << name << " in " << ui_path);
1519
1520         enum {
1521                 ui_menuset = 1,
1522                 ui_toolbars,
1523                 ui_toolbarset,
1524                 ui_include,
1525                 ui_last
1526         };
1527
1528         LexerKeyword uitags[] = {
1529                 { "include", ui_include },
1530                 { "menuset", ui_menuset },
1531                 { "toolbars", ui_toolbars },
1532                 { "toolbarset", ui_toolbarset }
1533         };
1534
1535         Lexer lex(uitags);
1536         lex.setFile(ui_path);
1537         if (!lex.isOK()) {
1538                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
1539                        << endl;
1540         }
1541
1542         if (lyxerr.debugging(Debug::PARSER))
1543                 lex.printTable(lyxerr);
1544
1545         // store which ui files define Toolbars
1546         static QStringList toolbar_uifiles;
1547
1548         while (lex.isOK()) {
1549                 switch (lex.lex()) {
1550                 case ui_include: {
1551                         lex.next(true);
1552                         QString const file = toqstr(lex.getString());
1553                         if (!readUIFile(file, true))
1554                                 return false;
1555                         break;
1556                 }
1557                 case ui_menuset:
1558                         d->menus_.read(lex);
1559                         break;
1560
1561                 case ui_toolbarset:
1562                         d->toolbars_.readToolbars(lex);
1563                         break;
1564
1565                 case ui_toolbars:
1566                         d->toolbars_.readToolbarSettings(lex);
1567                         toolbar_uifiles.push_back(uifile);
1568                         break;
1569
1570                 default:
1571                         if (!rtrim(lex.getString()).empty())
1572                                 lex.printError("LyX::ReadUIFile: "
1573                                                "Unknown menu tag: `$$Token'");
1574                         break;
1575                 }
1576         }
1577
1578         if (include)
1579                 return true;
1580
1581         QSettings settings;
1582         settings.beginGroup("ui_files");
1583         bool touched = false;
1584         for (int i = 0; i != uifiles.size(); ++i) {
1585                 QFileInfo fi(uifiles[i]);
1586                 QDateTime const date_value = fi.lastModified();
1587                 QString const name_key = QString::number(i);
1588                 // if an ui file which defines Toolbars has changed,
1589                 // we have to reset the settings
1590                 if (toolbar_uifiles.contains(uifiles[i])
1591                  && (!settings.contains(name_key)
1592                  || settings.value(name_key).toString() != uifiles[i]
1593                  || settings.value(name_key + "/date").toDateTime() != date_value)) {
1594                         touched = true;
1595                         settings.setValue(name_key, uifiles[i]);
1596                         settings.setValue(name_key + "/date", date_value);
1597                 }
1598         }
1599         settings.endGroup();
1600         if (touched)
1601                 settings.remove("views");
1602
1603         return true;
1604 }
1605
1606
1607 void GuiApplication::onLastWindowClosed()
1608 {
1609         if (d->global_menubar_)
1610                 d->global_menubar_->grabKeyboard();
1611 }
1612
1613
1614 ////////////////////////////////////////////////////////////////////////
1615 //
1616 // X11 specific stuff goes here...
1617
1618 #ifdef Q_WS_X11
1619 bool GuiApplication::x11EventFilter(XEvent * xev)
1620 {
1621         if (!current_view_)
1622                 return false;
1623
1624         switch (xev->type) {
1625         case SelectionRequest: {
1626                 if (xev->xselectionrequest.selection != XA_PRIMARY)
1627                         break;
1628                 LYXERR(Debug::SELECTION, "X requested selection.");
1629                 BufferView * bv = current_view_->view();
1630                 if (bv) {
1631                         docstring const sel = bv->requestSelection();
1632                         if (!sel.empty())
1633                                 d->selection_.put(sel);
1634                 }
1635                 break;
1636         }
1637         case SelectionClear: {
1638                 if (xev->xselectionclear.selection != XA_PRIMARY)
1639                         break;
1640                 LYXERR(Debug::SELECTION, "Lost selection.");
1641                 BufferView * bv = current_view_->view();
1642                 if (bv)
1643                         bv->clearSelection();
1644                 break;
1645         }
1646         }
1647         return false;
1648 }
1649 #endif
1650
1651 } // namespace frontend
1652
1653
1654 void hideDialogs(std::string const & name, Inset * inset)
1655 {
1656         if (theApp())
1657                 theApp()->hideDialogs(name, inset);
1658 }
1659
1660
1661 ////////////////////////////////////////////////////////////////////
1662 //
1663 // Font stuff
1664 //
1665 ////////////////////////////////////////////////////////////////////
1666
1667 frontend::FontLoader & theFontLoader()
1668 {
1669         LASSERT(frontend::guiApp, /**/);
1670         return frontend::guiApp->fontLoader();
1671 }
1672
1673
1674 frontend::FontMetrics const & theFontMetrics(Font const & f)
1675 {
1676         return theFontMetrics(f.fontInfo());
1677 }
1678
1679
1680 frontend::FontMetrics const & theFontMetrics(FontInfo const & f)
1681 {
1682         LASSERT(frontend::guiApp, /**/);
1683         return frontend::guiApp->fontLoader().metrics(f);
1684 }
1685
1686
1687 ////////////////////////////////////////////////////////////////////
1688 //
1689 // Misc stuff
1690 //
1691 ////////////////////////////////////////////////////////////////////
1692
1693 frontend::Clipboard & theClipboard()
1694 {
1695         LASSERT(frontend::guiApp, /**/);
1696         return frontend::guiApp->clipboard();
1697 }
1698
1699
1700 frontend::Selection & theSelection()
1701 {
1702         LASSERT(frontend::guiApp, /**/);
1703         return frontend::guiApp->selection();
1704 }
1705
1706
1707 } // namespace lyx
1708
1709 #include "moc_GuiApplication.cpp"