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                 // clear the last opened list, because
 847                 // maybe this will end the session
 848                 theSession().lastOpened().clear();
 849                 current_view_->close();
 850                 break;
 851
 852         case LFUN_LYX_QUIT:
 853                 // quitting is triggered by the gui code
 854                 // (leaving the event loop).
 855                 if (current_view_)
 856                         current_view_->message(from_utf8(N_("Exiting.")));
 857                 if (closeAllViews())
 858                         quit();
 859                 break;
 860
 861         case LFUN_SCREEN_FONT_UPDATE: {
 862                 // handle the screen font changes.
 863                 d->font_loader_.update();
 864                 // Backup current_view_
 865                 GuiView * view = current_view_;
 866                 // Set current_view_ to zero to forbid GuiWorkArea::redraw()
 867                 // to skip the refresh.
 868                 current_view_ = 0;
 869                 BufferList::iterator it = theBufferList().begin();
 870                 BufferList::iterator const end = theBufferList().end();
 871                 for (; it != end; ++it)
 872                         (*it)->changed();
 873                 // Restore current_view_
 874                 current_view_ = view;
 875                 break;
 876         }
 877
 878         case LFUN_BUFFER_NEW:
 879                 if (d->views_.empty()
 880                     || (!lyxrc.open_buffers_in_tabs && current_view_->documentBufferView() != 0)) {
 881                         createView(QString(), false); // keep hidden
 882                         current_view_->newDocument(to_utf8(cmd.argument()), false);
 883                         current_view_->show();
 884                         setActiveWindow(current_view_);
 885                 } else {
 886                         current_view_->newDocument(to_utf8(cmd.argument()), false);
 887                 }
 888                 break;
 889
 890         case LFUN_BUFFER_NEW_TEMPLATE:
 891                 if (d->views_.empty()
 892                     || (!lyxrc.open_buffers_in_tabs && current_view_->documentBufferView() != 0)) {
 893                         createView();
 894                         current_view_->newDocument(to_utf8(cmd.argument()), true);
 895                         if (!current_view_->documentBufferView())
 896                                 current_view_->close();
 897                 } else {
 898                         current_view_->newDocument(to_utf8(cmd.argument()), true);
 899                 }
 900                 break;
 901
 902         case LFUN_FILE_OPEN:
 903                 if (d->views_.empty()
 904                     || (!lyxrc.open_buffers_in_tabs && current_view_->documentBufferView() != 0)) {
 905                         string const fname = to_utf8(cmd.argument());
 906                         // We want the ui session to be saved per document and not per
 907                         // window number. The filename crc is a good enough identifier.
 908                         boost::crc_32_type crc;
 909                         crc = for_each(fname.begin(), fname.end(), crc);
 910                         createView(crc.checksum());
 911                         current_view_->openDocument(fname);
 912                         if (current_view_ && !current_view_->documentBufferView())
 913                                 current_view_->close();
 914                 } else
 915                         current_view_->openDocument(to_utf8(cmd.argument()));
 916                 break;
 917
 918         case LFUN_SET_COLOR: {
 919                 string lyx_name;
 920                 string const x11_name = split(to_utf8(cmd.argument()), lyx_name, ' ');
 921                 if (lyx_name.empty() || x11_name.empty()) {
 922                         current_view_->message(
 923                                 _("Syntax: set-color <lyx_name> <x11_name>"));
 924                         break;
 925                 }
 926
 927                 string const graphicsbg = lcolor.getLyXName(Color_graphicsbg);
 928                 bool const graphicsbg_changed = lyx_name == graphicsbg
 929                         && x11_name != graphicsbg;
 930                 if (graphicsbg_changed) {
 931                         // FIXME: The graphics cache no longer has a changeDisplay method.
 932 #if 0
 933                         graphics::GCache::get().changeDisplay(true);
 934 #endif
 935                 }
 936
 937                 if (!lcolor.setColor(lyx_name, x11_name)) {
 938                         current_view_->message(
 939                                         bformat(_("Set-color \"%1$s\" failed "
 940                                                                "- color is undefined or "
 941                                                                "may not be redefined"),
 942                                                                    from_utf8(lyx_name)));
 943                         break;
 944                 }
 945                 // Make sure we don't keep old colors in cache.
 946                 d->color_cache_.clear();
 947                 break;
 948         }
 949
 950         default:
 951                 // Notify the caller that the action has not been dispatched.
 952                 return false;
 953         }
 954
 955         // The action has been dispatched.
 956         return true;
 957 }
 958
 959
 960 void GuiApplication::dispatchDelayed(FuncRequest const & func)
 961 {
 962         d->func_request_queue_.push(func);
 963         QTimer::singleShot(0, this, SLOT(processFuncRequestQueue()));
 964 }
 965
 966
 967 void GuiApplication::resetGui()
 968 {
 969         // Set the language defined by the user.
 970         setGuiLanguage();
 971
 972         // Read menus
 973         if (!readUIFile(toqstr(lyxrc.ui_file)))
 974                 // Gives some error box here.
 975                 return;
 976
 977         if (d->global_menubar_)
 978                 d->menus_.fillMenuBar(d->global_menubar_, 0, false);
 979
 980         QHash<int, GuiView *>::iterator it;
 981         for (it = d->views_.begin(); it != d->views_.end(); ++it) {
 982                 GuiView * gv = *it;
 983                 gv->setLayoutDirection(layoutDirection());
 984                 gv->resetDialogs();
 985         }
 986
 987         dispatch(FuncRequest(LFUN_SCREEN_FONT_UPDATE));
 988 }
 989
 990
 991 void GuiApplication::createView(int view_id)
 992 {
 993         createView(QString(), true, view_id);
 994 }
 995
 996
 997 void GuiApplication::createView(QString const & geometry_arg, bool autoShow,
 998         int view_id)
 999 {
1000         // release the keyboard which might have been grabed by the global
1001         // menubar on Mac to catch shortcuts even without any GuiView.
1002         if (d->global_menubar_)
1003                 d->global_menubar_->releaseKeyboard();
1004
1005         // create new view
1006         int id = view_id;
1007         if (id == 0) {
1008                 while (d->views_.find(id) != d->views_.end())
1009                         id++;
1010         }
1011         LYXERR(Debug::GUI, "About to create new window with ID " << id);
1012         GuiView * view = new GuiView(id);
1013         // register view
1014         d->views_[id] = view;
1015
1016         if (autoShow) {
1017                 view->show();
1018                 setActiveWindow(view);
1019         }
1020
1021         if (!geometry_arg.isEmpty()) {
1022 #ifdef Q_WS_WIN
1023                 int x, y;
1024                 int w, h;
1025                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
1026                 re.indexIn(geometry_arg);
1027                 w = re.cap(1).toInt();
1028                 h = re.cap(2).toInt();
1029                 x = re.cap(3).toInt();
1030                 y = re.cap(4).toInt();
1031                 view->setGeometry(x, y, w, h);
1032 #endif
1033         }
1034         view->setFocus();
1035 }
1036
1037
1038 Clipboard & GuiApplication::clipboard()
1039 {
1040         return d->clipboard_;
1041 }
1042
1043
1044 Selection & GuiApplication::selection()
1045 {
1046         return d->selection_;
1047 }
1048
1049
1050 FontLoader & GuiApplication::fontLoader()
1051 {
1052         return d->font_loader_;
1053 }
1054
1055
1056 Toolbars const & GuiApplication::toolbars() const
1057 {
1058         return d->toolbars_;
1059 }
1060
1061
1062 Toolbars & GuiApplication::toolbars()
1063 {
1064         return d->toolbars_;
1065 }
1066
1067
1068 Menus const & GuiApplication::menus() const
1069 {
1070         return d->menus_;
1071 }
1072
1073
1074 Menus & GuiApplication::menus()
1075 {
1076         return d->menus_;
1077 }
1078
1079
1080 QList<int> GuiApplication::viewIds() const
1081 {
1082         return d->views_.keys();
1083 }
1084
1085
1086 ColorCache & GuiApplication::colorCache()
1087 {
1088         return d->color_cache_;
1089 }
1090
1091
1092 int GuiApplication::exec()
1093 {
1094         // asynchronously handle batch commands. This event will be in
1095         // the event queue in front of other asynchronous events. Hence,
1096         // we can assume in the latter that the gui is setup already.
1097         QTimer::singleShot(0, this, SLOT(execBatchCommands()));
1098
1099         return QApplication::exec();
1100 }
1101
1102
1103 void GuiApplication::exit(int status)
1104 {
1105         QApplication::exit(status);
1106 }
1107
1108
1109 void GuiApplication::setGuiLanguage()
1110 {
1111         // Set the language defined by the user.
1112         setRcGuiLanguage();
1113
1114         QString const default_language = toqstr(Messages::defaultLanguage());
1115         LYXERR(Debug::LOCALE, "Tring to set default locale to: " << default_language);
1116         QLocale const default_locale(default_language);
1117         QLocale::setDefault(default_locale);
1118
1119         // install translation file for Qt built-in dialogs
1120         QString const language_name = QString("qt_") + default_locale.name();
1121
1122         // language_name can be short (e.g. qt_zh) or long (e.g. qt_zh_CN).
1123         // Short-named translator can be loaded from a long name, but not the
1124         // opposite. Therefore, long name should be used without truncation.
1125         // c.f. http://doc.trolltech.com/4.1/qtranslator.html#load
1126         if (!d->qt_trans_.load(language_name,
1127                         QLibraryInfo::location(QLibraryInfo::TranslationsPath))) {
1128                 LYXERR(Debug::LOCALE, "Could not find  Qt translations for locale "
1129                         << language_name);
1130         } else {
1131                 LYXERR(Debug::LOCALE, "Successfully installed Qt translations for locale "
1132                         << language_name);
1133         }
1134
1135         switch (default_locale.language()) {
1136         case QLocale::Arabic :
1137         case QLocale::Hebrew :
1138         case QLocale::Persian :
1139         case QLocale::Urdu :
1140         setLayoutDirection(Qt::RightToLeft);
1141                 break;
1142         default:
1143         setLayoutDirection(Qt::LeftToRight);
1144         }
1145 }
1146
1147
1148 void GuiApplication::processFuncRequestQueue()
1149 {
1150         while (!d->func_request_queue_.empty()) {
1151                 lyx::dispatch(d->func_request_queue_.back());
1152                 d->func_request_queue_.pop();
1153         }
1154 }
1155
1156
1157 void GuiApplication::execBatchCommands()
1158 {
1159         setGuiLanguage();
1160
1161         // Read menus
1162         if (!readUIFile(toqstr(lyxrc.ui_file)))
1163                 // Gives some error box here.
1164                 return;
1165
1166 #ifdef Q_WS_MACX
1167         // Create the global default menubar which is shown for the dialogs
1168         // and if no GuiView is visible.
1169         // This must be done after the session was recovered to know the "last files".
1170         d->global_menubar_ = new GlobalMenuBar();
1171         d->menus_.fillMenuBar(d->global_menubar_, 0, true);
1172 #endif
1173
1174         lyx::execBatchCommands();
1175 }
1176
1177
1178 QAbstractItemModel * GuiApplication::languageModel()
1179 {
1180         if (d->language_model_)
1181                 return d->language_model_;
1182
1183         QStandardItemModel * lang_model = new QStandardItemModel(this);
1184         lang_model->insertColumns(0, 1);
1185         int current_row;
1186         Languages::const_iterator it = languages.begin();
1187         Languages::const_iterator end = languages.end();
1188         for (; it != end; ++it) {
1189                 current_row = lang_model->rowCount();
1190                 lang_model->insertRows(current_row, 1);
1191                 QModelIndex item = lang_model->index(current_row, 0);
1192                 lang_model->setData(item, qt_(it->second.display()), Qt::DisplayRole);
1193                 lang_model->setData(item, toqstr(it->second.lang()), Qt::UserRole);
1194         }
1195         d->language_model_ = new QSortFilterProxyModel(this);
1196         d->language_model_->setSourceModel(lang_model);
1197 #if QT_VERSION >= 0x040300
1198         d->language_model_->setSortLocaleAware(true);
1199 #endif
1200         return d->language_model_;
1201 }
1202
1203
1204 void GuiApplication::restoreGuiSession()
1205 {
1206         if (!lyxrc.load_session)
1207                 return;
1208
1209         Session & session = theSession();
1210         LastOpenedSection::LastOpened const & lastopened =
1211                 session.lastOpened().getfiles();
1212
1213         FileName active_file;
1214         // do not add to the lastfile list since these files are restored from
1215         // last session, and should be already there (regular files), or should
1216         // not be added at all (help files).
1217         for (size_t i = 0; i < lastopened.size(); ++i) {
1218                 FileName const & file_name = lastopened[i].file_name;
1219                 if (d->views_.empty() || (!lyxrc.open_buffers_in_tabs
1220                           && current_view_->documentBufferView() != 0)) {
1221                         boost::crc_32_type crc;
1222                         string const & fname = file_name.absFilename();
1223                         crc = for_each(fname.begin(), fname.end(), crc);
1224                         createView(crc.checksum());
1225                 }
1226                 current_view_->loadDocument(file_name, false);
1227
1228                 if (lastopened[i].active)
1229                         active_file = file_name;
1230         }
1231
1232         // Restore last active buffer
1233         Buffer * buffer = theBufferList().getBuffer(active_file);
1234         if (buffer)
1235                 current_view_->setBuffer(buffer);
1236
1237         // clear this list to save a few bytes of RAM
1238         session.lastOpened().clear();
1239 }
1240
1241
1242 QString const GuiApplication::romanFontName()
1243 {
1244         QFont font;
1245         font.setKerning(false);
1246         font.setStyleHint(QFont::Serif);
1247         font.setFamily("serif");
1248
1249         return QFontInfo(font).family();
1250 }
1251
1252
1253 QString const GuiApplication::sansFontName()
1254 {
1255         QFont font;
1256         font.setKerning(false);
1257         font.setStyleHint(QFont::SansSerif);
1258         font.setFamily("sans");
1259
1260         return QFontInfo(font).family();
1261 }
1262
1263
1264 QString const GuiApplication::typewriterFontName()
1265 {
1266         QFont font;
1267         font.setKerning(false);
1268         font.setStyleHint(QFont::TypeWriter);
1269         font.setFamily("monospace");
1270
1271         return QFontInfo(font).family();
1272 }
1273
1274
1275 void GuiApplication::handleRegularEvents()
1276 {
1277         ForkedCallsController::handleCompletedProcesses();
1278 }
1279
1280
1281 bool GuiApplication::event(QEvent * e)
1282 {
1283         switch(e->type()) {
1284         case QEvent::FileOpen: {
1285                 // Open a file; this happens only on Mac OS X for now.
1286                 //
1287                 // We do this asynchronously because on startup the batch
1288                 // commands are not executed here yet and the gui is not ready
1289                 // therefore.
1290                 QFileOpenEvent * foe = static_cast<QFileOpenEvent *>(e);
1291                 dispatchDelayed(FuncRequest(LFUN_FILE_OPEN, qstring_to_ucs4(foe->file())));
1292                 e->accept();
1293                 return true;
1294         }
1295         default:
1296                 return QApplication::event(e);
1297         }
1298 }
1299
1300
1301 bool GuiApplication::notify(QObject * receiver, QEvent * event)
1302 {
1303         try {
1304                 return QApplication::notify(receiver, event);
1305         }
1306         catch (ExceptionMessage const & e) {
1307                 switch(e.type_) {
1308                 case ErrorException:
1309                         emergencyCleanup();
1310                         setQuitOnLastWindowClosed(false);
1311                         closeAllViews();
1312                         Alert::error(e.title_, e.details_);
1313 #ifndef NDEBUG
1314                         // Properly crash in debug mode in order to get a useful backtrace.
1315                         abort();
1316 #endif
1317                         // In release mode, try to exit gracefully.
1318                         this->exit(1);
1319
1320                 case BufferException: {
1321                         if (!current_view_->documentBufferView())
1322                                 return false;
1323                         Buffer * buf = &current_view_->documentBufferView()->buffer();
1324                         docstring details = e.details_ + '\n';
1325                         details += buf->emergencyWrite();
1326                         theBufferList().release(buf);
1327                         details += "\n" + _("The current document was closed.");
1328                         Alert::error(e.title_, details);
1329                         return false;
1330                 }
1331                 case WarningException:
1332                         Alert::warning(e.title_, e.details_);
1333                         return false;
1334                 }
1335         }
1336         catch (exception const & e) {
1337                 docstring s = _("LyX has caught an exception, it will now "
1338                         "attempt to save all unsaved documents and exit."
1339                         "\n\nException: ");
1340                 s += from_ascii(e.what());
1341                 Alert::error(_("Software exception Detected"), s);
1342                 lyx_exit(1);
1343         }
1344         catch (...) {
1345                 docstring s = _("LyX has caught some really weird exception, it will "
1346                         "now attempt to save all unsaved documents and exit.");
1347                 Alert::error(_("Software exception Detected"), s);
1348                 lyx_exit(1);
1349         }
1350
1351         return false;
1352 }
1353
1354
1355 bool GuiApplication::getRgbColor(ColorCode col, RGBColor & rgbcol)
1356 {
1357         QColor const & qcol = d->color_cache_.get(col);
1358         if (!qcol.isValid()) {
1359                 rgbcol.r = 0;
1360                 rgbcol.g = 0;
1361                 rgbcol.b = 0;
1362                 return false;
1363         }
1364         rgbcol.r = qcol.red();
1365         rgbcol.g = qcol.green();
1366         rgbcol.b = qcol.blue();
1367         return true;
1368 }
1369
1370
1371 string const GuiApplication::hexName(ColorCode col)
1372 {
1373         return ltrim(fromqstr(d->color_cache_.get(col).name()), "#");
1374 }
1375
1376
1377 void GuiApplication::registerSocketCallback(int fd, SocketCallback func)
1378 {
1379         SocketNotifier * sn = new SocketNotifier(this, fd, func);
1380         d->socket_notifiers_[fd] = sn;
1381         connect(sn, SIGNAL(activated(int)), this, SLOT(socketDataReceived(int)));
1382 }
1383
1384
1385 void GuiApplication::socketDataReceived(int fd)
1386 {
1387         d->socket_notifiers_[fd]->func_();
1388 }
1389
1390
1391 void GuiApplication::unregisterSocketCallback(int fd)
1392 {
1393         d->socket_notifiers_.take(fd)->setEnabled(false);
1394 }
1395
1396
1397 void GuiApplication::commitData(QSessionManager & sm)
1398 {
1399         /// The implementation is required to avoid an application exit
1400         /// when session state save is triggered by session manager.
1401         /// The default implementation sends a close event to all
1402         /// visible top level widgets when session managment allows
1403         /// interaction.
1404         /// We are changing that to close all wiew one by one.
1405         /// FIXME: verify if the default implementation is enough now.
1406         if (sm.allowsInteraction() && !closeAllViews())
1407                 sm.cancel();
1408 }
1409
1410
1411 void GuiApplication::unregisterView(GuiView * gv)
1412 {
1413         LASSERT(d->views_[gv->id()] == gv, /**/);
1414         d->views_.remove(gv->id());
1415         if (current_view_ == gv) {
1416                 current_view_ = 0;
1417                 theLyXFunc().setLyXView(0);
1418         }
1419 }
1420
1421
1422 bool GuiApplication::closeAllViews()
1423 {
1424         if (d->views_.empty())
1425                 return true;
1426
1427         // When a view/window was closed before without quitting LyX, there
1428         // are already entries in the lastOpened list.
1429         theSession().lastOpened().clear();
1430
1431         QList<GuiView *> views = d->views_.values();
1432         foreach (GuiView * view, views) {
1433                 if (!view->close())
1434                         return false;
1435         }
1436
1437         d->views_.clear();
1438         return true;
1439 }
1440
1441
1442 GuiView & GuiApplication::view(int id) const
1443 {
1444         LASSERT(d->views_.contains(id), /**/);
1445         return *d->views_.value(id);
1446 }
1447
1448
1449 void GuiApplication::hideDialogs(string const & name, Inset * inset) const
1450 {
1451         QList<GuiView *> views = d->views_.values();
1452         foreach (GuiView * view, views)
1453                 view->hideDialog(name, inset);
1454 }
1455
1456
1457 Buffer const * GuiApplication::updateInset(Inset const * inset) const
1458 {
1459         Buffer const * buffer_ = 0;
1460         QHash<int, GuiView *>::iterator end = d->views_.end();
1461         for (QHash<int, GuiView *>::iterator it = d->views_.begin(); it != end; ++it) {
1462                 if (Buffer const * ptr = (*it)->updateInset(inset))
1463                         buffer_ = ptr;
1464         }
1465         return buffer_;
1466 }
1467
1468
1469 bool GuiApplication::searchMenu(FuncRequest const & func,
1470         docstring_list & names) const
1471 {
1472         return d->menus_.searchMenu(func, names);
1473 }
1474
1475
1476 bool GuiApplication::readUIFile(QString const & name, bool include)
1477 {
1478         LYXERR(Debug::INIT, "About to read " << name << "...");
1479
1480         FileName ui_path;
1481         if (include) {
1482                 ui_path = libFileSearch("ui", name, "inc");
1483                 if (ui_path.empty())
1484                         ui_path = libFileSearch("ui", changeExtension(name, "inc"));
1485         } else {
1486                 ui_path = libFileSearch("ui", name, "ui");
1487         }
1488
1489         if (ui_path.empty()) {
1490                 static const QString defaultUIFile = "default";
1491                 LYXERR(Debug::INIT, "Could not find " << name);
1492                 if (include) {
1493                         Alert::warning(_("Could not find UI definition file"),
1494                                 bformat(_("Error while reading the included file\n%1$s\n"
1495                                         "Please check your installation."), qstring_to_ucs4(name)));
1496                         return false;
1497                 }
1498                 if (name == defaultUIFile) {
1499                         LYXERR(Debug::INIT, "Could not find default UI file!!");
1500                         Alert::warning(_("Could not find default UI file"),
1501                                 _("LyX could not find the default UI file!\n"
1502                                   "Please check your installation."));
1503                         return false;
1504                 }
1505                 Alert::warning(_("Could not find UI definition file"),
1506                 bformat(_("Error while reading the configuration file\n%1$s\n"
1507                         "Falling back to default.\n"
1508                         "Please look under Tools>Preferences>User Interface and\n"
1509                         "check which User Interface file you are using."), qstring_to_ucs4(name)));
1510                 return readUIFile(defaultUIFile, false);
1511         }
1512
1513         // Ensure that a file is read only once (prevents include loops)
1514         static QStringList uifiles;
1515         QString const uifile = toqstr(ui_path.absFilename());
1516         if (uifiles.contains(uifile)) {
1517                 if (!include) {
1518                         // We are reading again the top uifile so reset the safeguard:
1519                         uifiles.clear();
1520                         d->menus_.reset();
1521                         d->toolbars_.reset();
1522                 } else {
1523                         LYXERR(Debug::INIT, "UI file '" << name << "' has been read already. "
1524                                 << "Is this an include loop?");
1525                         return false;
1526                 }
1527         }
1528         uifiles.push_back(uifile);
1529
1530         LYXERR(Debug::INIT, "Found " << name << " in " << ui_path);
1531
1532         enum {
1533                 ui_menuset = 1,
1534                 ui_toolbars,
1535                 ui_toolbarset,
1536                 ui_include,
1537                 ui_last
1538         };
1539
1540         LexerKeyword uitags[] = {
1541                 { "include", ui_include },
1542                 { "menuset", ui_menuset },
1543                 { "toolbars", ui_toolbars },
1544                 { "toolbarset", ui_toolbarset }
1545         };
1546
1547         Lexer lex(uitags);
1548         lex.setFile(ui_path);
1549         if (!lex.isOK()) {
1550                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
1551                        << endl;
1552         }
1553
1554         if (lyxerr.debugging(Debug::PARSER))
1555                 lex.printTable(lyxerr);
1556
1557         // store which ui files define Toolbars
1558         static QStringList toolbar_uifiles;
1559
1560         while (lex.isOK()) {
1561                 switch (lex.lex()) {
1562                 case ui_include: {
1563                         lex.next(true);
1564                         QString const file = toqstr(lex.getString());
1565                         if (!readUIFile(file, true))
1566                                 return false;
1567                         break;
1568                 }
1569                 case ui_menuset:
1570                         d->menus_.read(lex);
1571                         break;
1572
1573                 case ui_toolbarset:
1574                         d->toolbars_.readToolbars(lex);
1575                         break;
1576
1577                 case ui_toolbars:
1578                         d->toolbars_.readToolbarSettings(lex);
1579                         toolbar_uifiles.push_back(uifile);
1580                         break;
1581
1582                 default:
1583                         if (!rtrim(lex.getString()).empty())
1584                                 lex.printError("LyX::ReadUIFile: "
1585                                                "Unknown menu tag: `$$Token'");
1586                         break;
1587                 }
1588         }
1589
1590         if (include)
1591                 return true;
1592
1593         QSettings settings;
1594         settings.beginGroup("ui_files");
1595         bool touched = false;
1596         for (int i = 0; i != uifiles.size(); ++i) {
1597                 QFileInfo fi(uifiles[i]);
1598                 QDateTime const date_value = fi.lastModified();
1599                 QString const name_key = QString::number(i);
1600                 // if an ui file which defines Toolbars has changed,
1601                 // we have to reset the settings
1602                 if (toolbar_uifiles.contains(uifiles[i])
1603                  && (!settings.contains(name_key)
1604                  || settings.value(name_key).toString() != uifiles[i]
1605                  || settings.value(name_key + "/date").toDateTime() != date_value)) {
1606                         touched = true;
1607                         settings.setValue(name_key, uifiles[i]);
1608                         settings.setValue(name_key + "/date", date_value);
1609                 }
1610         }
1611         settings.endGroup();
1612         if (touched)
1613                 settings.remove("views");
1614
1615         return true;
1616 }
1617
1618
1619 void GuiApplication::onLastWindowClosed()
1620 {
1621         if (d->global_menubar_)
1622                 d->global_menubar_->grabKeyboard();
1623 }
1624
1625
1626 ////////////////////////////////////////////////////////////////////////
1627 //
1628 // X11 specific stuff goes here...
1629
1630 #ifdef Q_WS_X11
1631 bool GuiApplication::x11EventFilter(XEvent * xev)
1632 {
1633         if (!current_view_)
1634                 return false;
1635
1636         switch (xev->type) {
1637         case SelectionRequest: {
1638                 if (xev->xselectionrequest.selection != XA_PRIMARY)
1639                         break;
1640                 LYXERR(Debug::SELECTION, "X requested selection.");
1641                 BufferView * bv = current_view_->currentBufferView();
1642                 if (bv) {
1643                         docstring const sel = bv->requestSelection();
1644                         if (!sel.empty())
1645                                 d->selection_.put(sel);
1646                 }
1647                 break;
1648         }
1649         case SelectionClear: {
1650                 if (xev->xselectionclear.selection != XA_PRIMARY)
1651                         break;
1652                 LYXERR(Debug::SELECTION, "Lost selection.");
1653                 BufferView * bv = current_view_->currentBufferView();
1654                 if (bv)
1655                         bv->clearSelection();
1656                 break;
1657         }
1658         }
1659         return false;
1660 }
1661 #endif
1662
1663 } // namespace frontend
1664
1665
1666 void hideDialogs(std::string const & name, Inset * inset)
1667 {
1668         if (theApp())
1669                 theApp()->hideDialogs(name, inset);
1670 }
1671
1672
1673 ////////////////////////////////////////////////////////////////////
1674 //
1675 // Font stuff
1676 //
1677 ////////////////////////////////////////////////////////////////////
1678
1679 frontend::FontLoader & theFontLoader()
1680 {
1681         LASSERT(frontend::guiApp, /**/);
1682         return frontend::guiApp->fontLoader();
1683 }
1684
1685
1686 frontend::FontMetrics const & theFontMetrics(Font const & f)
1687 {
1688         return theFontMetrics(f.fontInfo());
1689 }
1690
1691
1692 frontend::FontMetrics const & theFontMetrics(FontInfo const & f)
1693 {
1694         LASSERT(frontend::guiApp, /**/);
1695         return frontend::guiApp->fontLoader().metrics(f);
1696 }
1697
1698
1699 ////////////////////////////////////////////////////////////////////
1700 //
1701 // Misc stuff
1702 //
1703 ////////////////////////////////////////////////////////////////////
1704
1705 frontend::Clipboard & theClipboard()
1706 {
1707         LASSERT(frontend::guiApp, /**/);
1708         return frontend::guiApp->clipboard();
1709 }
1710
1711
1712 frontend::Selection & theSelection()
1713 {
1714         LASSERT(frontend::guiApp, /**/);
1715         return frontend::guiApp->selection();
1716 }
1717
1718
1719 } // namespace lyx
1720
1721 #include "moc_GuiApplication.cpp"