src/frontends/qt4/GuiApplication.cpp

   1 /**
   2  * \file GuiApplication.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author unknown
   7  * \author John Levon
   8  * \author Abdelrazak Younes
   9  *
  10  * Full author contact details are available in file CREDITS.
  11  */
  12
  13 #include <config.h>
  14
  15 #include "GuiApplication.h"
  16
  17 #include "ColorCache.h"
  18 #include "GuiClipboard.h"
  19 #include "GuiImage.h"
  20 #include "GuiKeySymbol.h"
  21 #include "GuiSelection.h"
  22 #include "GuiView.h"
  23 #include "Menus.h"
  24 #include "qt_helpers.h"
  25 #include "Toolbars.h"
  26
  27 #include "frontends/alert.h"
  28 #include "frontends/Application.h"
  29 #include "frontends/FontLoader.h"
  30 #include "frontends/FontMetrics.h"
  31
  32 #include "Buffer.h"
  33 #include "BufferList.h"
  34 #include "BufferView.h"
  35 #include "Color.h"
  36 #include "Font.h"
  37 #include "FuncRequest.h"
  38 #include "FuncStatus.h"
  39 #include "Language.h"
  40 #include "Lexer.h"
  41 #include "LyX.h"
  42 #include "LyXAction.h"
  43 #include "LyXFunc.h"
  44 #include "LyXRC.h"
  45 #include "Session.h"
  46 #include "version.h"
  47
  48 #include "support/lassert.h"
  49 #include "support/debug.h"
  50 #include "support/ExceptionMessage.h"
  51 #include "support/FileName.h"
  52 #include "support/foreach.h"
  53 #include "support/ForkedCalls.h"
  54 #include "support/gettext.h"
  55 #include "support/lstrings.h"
  56 #include "support/lyxalgo.h" // sorted
  57 #include "support/Messages.h"
  58 #include "support/os.h"
  59 #include "support/Package.h"
  60
  61 #ifdef Q_WS_MACX
  62 #include "support/linkback/LinkBackProxy.h"
  63 #endif
  64
  65 #include <QByteArray>
  66 #include <QClipboard>
  67 #include <QDateTime>
  68 #include <QDir>
  69 #include <QEventLoop>
  70 #include <QFileOpenEvent>
  71 #include <QFileInfo>
  72 #include <QHash>
  73 #include <QIcon>
  74 #include <QImageReader>
  75 #include <QLocale>
  76 #include <QLibraryInfo>
  77 #include <QList>
  78 #include <QMacPasteboardMime>
  79 #include <QMenuBar>
  80 #include <QMimeData>
  81 #include <QObject>
  82 #include <QPixmap>
  83 #include <QPixmapCache>
  84 #include <QRegExp>
  85 #include <QSessionManager>
  86 #include <QSettings>
  87 #include <QSocketNotifier>
  88 #include <QSortFilterProxyModel>
  89 #include <QStandardItemModel>
  90 #include <QTextCodec>
  91 #include <QTimer>
  92 #include <QTranslator>
  93 #include <QWidget>
  94
  95 #ifdef Q_WS_X11
  96 #include <X11/Xatom.h>
  97 #include <X11/Xlib.h>
  98 #undef CursorShape
  99 #undef None
 100 #endif
 101
 102 #ifdef Q_WS_WIN
 103 #include <QWindowsMime>
 104 #if defined(Q_CYGWIN_WIN) || defined(Q_CC_MINGW)
 105 #include <wtypes.h>
 106 #endif
 107 #include <objidl.h>
 108 #endif // Q_WS_WIN
 109
 110 #include <boost/bind.hpp>
 111 #include <boost/crc.hpp>
 112
 113 #include <exception>
 114 #include <vector>
 115
 116 using namespace std;
 117 using namespace lyx::support;
 118
 119
 120 static void initializeResources()
 121 {
 122         static bool initialized = false;
 123         if (!initialized) {
 124                 Q_INIT_RESOURCE(Resources);
 125                 initialized = true;
 126         }
 127 }
 128
 129
 130 namespace lyx {
 131
 132 frontend::Application * createApplication(int & argc, char * argv[])
 133 {
 134         return new frontend::GuiApplication(argc, argv);
 135 }
 136
 137 namespace frontend {
 138
 139
 140 /// Return the list of loadable formats.
 141 vector<string> loadableImageFormats()
 142 {
 143         vector<string> fmts;
 144
 145         QList<QByteArray> qt_formats = QImageReader::supportedImageFormats();
 146
 147         LYXERR(Debug::GRAPHICS,
 148                 "\nThe image loader can load the following directly:\n");
 149
 150         if (qt_formats.empty())
 151                 LYXERR(Debug::GRAPHICS, "\nQt4 Problem: No Format available!");
 152
 153         for (QList<QByteArray>::const_iterator it = qt_formats.begin(); it != qt_formats.end(); ++it) {
 154
 155                 LYXERR(Debug::GRAPHICS, (const char *) *it << ", ");
 156
 157                 string ext = ascii_lowercase((const char *) *it);
 158                 // special case
 159                 if (ext == "jpeg")
 160                         ext = "jpg";
 161                 fmts.push_back(ext);
 162         }
 163
 164         return fmts;
 165 }
 166
 167 ////////////////////////////////////////////////////////////////////////
 168 // Icon loading support code.
 169 ////////////////////////////////////////////////////////////////////////
 170
 171 namespace {
 172
 173 struct PngMap {
 174         QString key;
 175         QString value;
 176 };
 177
 178
 179 bool operator<(PngMap const & lhs, PngMap const & rhs)
 180 {
 181         return lhs.key < rhs.key;
 182 }
 183
 184
 185 class CompareKey {
 186 public:
 187         CompareKey(QString const & name) : name_(name) {}
 188         bool operator()(PngMap const & other) const { return other.key == name_; }
 189 private:
 190         QString const name_;
 191 };
 192
 193
 194 // this must be sorted alphabetically
 195 // Upper case comes before lower case
 196 PngMap sorted_png_map[] = {
 197         { "Bumpeq", "bumpeq2" },
 198         { "Cap", "cap2" },
 199         { "Cup", "cup2" },
 200         { "Delta", "delta2" },
 201         { "Downarrow", "downarrow2" },
 202         { "Gamma", "gamma2" },
 203         { "Lambda", "lambda2" },
 204         { "Leftarrow", "leftarrow2" },
 205         { "Leftrightarrow", "leftrightarrow2" },
 206         { "Longleftarrow", "longleftarrow2" },
 207         { "Longleftrightarrow", "longleftrightarrow2" },
 208         { "Longrightarrow", "longrightarrow2" },
 209         { "Omega", "omega2" },
 210         { "Phi", "phi2" },
 211         { "Pi", "pi2" },
 212         { "Psi", "psi2" },
 213         { "Rightarrow", "rightarrow2" },
 214         { "Sigma", "sigma2" },
 215         { "Subset", "subset2" },
 216         { "Supset", "supset2" },
 217         { "Theta", "theta2" },
 218         { "Uparrow", "uparrow2" },
 219         { "Updownarrow", "updownarrow2" },
 220         { "Upsilon", "upsilon2" },
 221         { "Vdash", "vdash3" },
 222         { "Vert", "vert2" },
 223         { "Xi", "xi2" },
 224         { "nLeftarrow", "nleftarrow2" },
 225         { "nLeftrightarrow", "nleftrightarrow2" },
 226         { "nRightarrow", "nrightarrow2" },
 227         { "nVDash", "nvdash3" },
 228         { "nvDash", "nvdash2" },
 229         { "textrm \\AA", "textrm_AA"},
 230         { "textrm \\O", "textrm_O"},
 231         { "vDash", "vdash2" }
 232 };
 233
 234 size_t const nr_sorted_png_map = sizeof(sorted_png_map) / sizeof(PngMap);
 235
 236
 237 QString findPng(QString const & name)
 238 {
 239         PngMap const * const begin = sorted_png_map;
 240         PngMap const * const end = begin + nr_sorted_png_map;
 241         LASSERT(sorted(begin, end), /**/);
 242
 243         PngMap const * const it = find_if(begin, end, CompareKey(name));
 244
 245         QString png_name;
 246         if (it != end) {
 247                 png_name = it->value;
 248         } else {
 249                 png_name = name;
 250                 png_name.replace('_', "underscore");
 251                 png_name.replace(' ', '_');
 252
 253                 // This way we can have "math-delim { }" on the toolbar.
 254                 png_name.replace('(', "lparen");
 255                 png_name.replace(')', "rparen");
 256                 png_name.replace('[', "lbracket");
 257                 png_name.replace(']', "rbracket");
 258                 png_name.replace('{', "lbrace");
 259                 png_name.replace('}', "rbrace");
 260                 png_name.replace('|', "bars");
 261                 png_name.replace(',', "thinspace");
 262                 png_name.replace(':', "mediumspace");
 263                 png_name.replace(';', "thickspace");
 264                 png_name.replace('!', "negthinspace");
 265         }
 266
 267         LYXERR(Debug::GUI, "findPng(" << name << ")\n"
 268                 << "Looking for math PNG called \"" << png_name << '"');
 269         return png_name;
 270 }
 271
 272 } // namespace anon
 273
 274
 275 QString iconName(FuncRequest const & f, bool unknown)
 276 {
 277         initializeResources();
 278         QString name1;
 279         QString name2;
 280         QString path;
 281         switch (f.action) {
 282         case LFUN_MATH_INSERT:
 283                 if (!f.argument().empty()) {
 284                         path = "math/";
 285                         name1 = findPng(toqstr(f.argument()).mid(1));
 286                 }
 287                 break;
 288         case LFUN_MATH_DELIM:
 289         case LFUN_MATH_BIGDELIM:
 290                 path = "math/";
 291                 name1 = findPng(toqstr(f.argument()));
 292                 break;
 293         case LFUN_CALL:
 294                 path = "commands/";
 295                 name1 = toqstr(f.argument());
 296                 break;
 297         default:
 298                 name2 = toqstr(lyxaction.getActionName(f.action));
 299                 name1 = name2;
 300
 301                 if (!f.argument().empty()) {
 302                         name1 = name2 + ' ' + toqstr(f.argument());
 303                         name1.replace(' ', '_');
 304                 }
 305         }
 306
 307         FileName fname = libFileSearch("images/" + path, name1, "png");
 308         if (fname.exists())
 309                 return toqstr(fname.absFilename());
 310
 311         fname = libFileSearch("images/" + path, name2, "png");
 312         if (fname.exists())
 313                 return toqstr(fname.absFilename());
 314
 315         path = ":/images/" + path;
 316         QDir res(path);
 317         if (!res.exists()) {
 318                 LYXERR0("Directory " << path << " not found in resource!");
 319                 return QString();
 320         }
 321         name1 += ".png";
 322         if (res.exists(name1))
 323                 return path + name1;
 324
 325         name2 += ".png";
 326         if (res.exists(name2))
 327                 return path + name2;
 328
 329         LYXERR(Debug::GUI, "Cannot find icon for command \""
 330                            << lyxaction.getActionName(f.action)
 331                            << '(' << to_utf8(f.argument()) << ")\"");
 332
 333         if (unknown)
 334                 return QString(":/images/unknown.png");
 335
 336         return QString();
 337 }
 338
 339
 340 QIcon getIcon(FuncRequest const & f, bool unknown)
 341 {
 342         QString icon = iconName(f, unknown);
 343         if (icon.isEmpty())
 344                 return QIcon();
 345
 346         //LYXERR(Debug::GUI, "Found icon: " << icon);
 347         QPixmap pm;
 348         if (!pm.load(icon)) {
 349                 LYXERR0("Cannot load icon " << icon << " please verify resource system!");
 350                 return QIcon();
 351         }
 352
 353         return QIcon(pm);
 354 }
 355
 356
 357 ////////////////////////////////////////////////////////////////////////
 358 // LyX server support code.
 359 ////////////////////////////////////////////////////////////////////////
 360 class SocketNotifier : public QSocketNotifier
 361 {
 362 public:
 363         /// connect a connection notification from the LyXServerSocket
 364         SocketNotifier(QObject * parent, int fd, Application::SocketCallback func)
 365                 : QSocketNotifier(fd, QSocketNotifier::Read, parent), func_(func)
 366         {}
 367
 368 public:
 369         /// The callback function
 370         Application::SocketCallback func_;
 371 };
 372
 373
 374 ////////////////////////////////////////////////////////////////////////
 375 // Mac specific stuff goes here...
 376 ////////////////////////////////////////////////////////////////////////
 377
 378 class MenuTranslator : public QTranslator
 379 {
 380 public:
 381         MenuTranslator(QObject * parent)
 382                 : QTranslator(parent)
 383         {}
 384
 385         QString translate(const char * /*context*/,
 386           const char * sourceText,
 387           const char * /*comment*/ = 0)
 388         {
 389                 string const s = sourceText;
 390                 if (s == N_("About %1") || s == N_("Preferences")
 391                                 || s == N_("Reconfigure") || s == N_("Quit %1"))
 392                         return qt_(s);
 393                 else
 394                         return QString();
 395         }
 396 };
 397
 398 class GlobalMenuBar : public QMenuBar
 399 {
 400 public:
 401         ///
 402         GlobalMenuBar() : QMenuBar(0) {}
 403
 404         ///
 405         bool event(QEvent * e)
 406         {
 407                 if (e->type() == QEvent::ShortcutOverride) {
 408                         //          && activeWindow() == 0) {
 409                         QKeyEvent * ke = static_cast<QKeyEvent*>(e);
 410                         KeySymbol sym;
 411                         setKeySymbol(&sym, ke);
 412                         theLyXFunc().processKeySym(sym, q_key_state(ke->modifiers()));
 413                         e->accept();
 414                         return true;
 415                 }
 416                 return false;
 417         }
 418 };
 419
 420 #ifdef Q_WS_MACX
 421 // QMacPasteboardMimeGraphics can only be compiled on Mac.
 422
 423 class QMacPasteboardMimeGraphics : public QMacPasteboardMime
 424 {
 425 public:
 426         QMacPasteboardMimeGraphics()
 427                 : QMacPasteboardMime(MIME_QT_CONVERTOR|MIME_ALL)
 428         {}
 429
 430         QString convertorName() { return "Graphics"; }
 431
 432         QString flavorFor(QString const & mime)
 433         {
 434                 LYXERR(Debug::ACTION, "flavorFor " << mime);
 435                 if (mime == pdfMimeType())
 436                         return QLatin1String("com.adobe.pdf");
 437                 return QString();
 438         }
 439
 440         QString mimeFor(QString flav)
 441         {
 442                 LYXERR(Debug::ACTION, "mimeFor " << flav);
 443                 if (flav == QLatin1String("com.adobe.pdf"))
 444                         return pdfMimeType();
 445                 return QString();
 446         }
 447
 448         bool canConvert(QString const & mime, QString flav)
 449         {
 450                 return mimeFor(flav) == mime;
 451         }
 452
 453         QVariant convertToMime(QString const & /*mime*/, QList<QByteArray> data,
 454                 QString /*flav*/)
 455         {
 456                 if(data.count() > 1)
 457                         qWarning("QMacPasteboardMimeGraphics: Cannot handle multiple member data");
 458                 return data.first();
 459         }
 460
 461         QList<QByteArray> convertFromMime(QString const & /*mime*/,
 462                 QVariant data, QString /*flav*/)
 463         {
 464                 QList<QByteArray> ret;
 465                 ret.append(data.toByteArray());
 466                 return ret;
 467         }
 468 };
 469 #endif
 470
 471 ///////////////////////////////////////////////////////////////
 472 // You can find more platform specific stuff
 473 // at the end of this file...
 474 ///////////////////////////////////////////////////////////////
 475
 476 ////////////////////////////////////////////////////////////////////////
 477 // Windows specific stuff goes here...
 478
 479 #ifdef Q_WS_WIN
 480 // QWindowsMimeMetafile can only be compiled on Windows.
 481
 482 static FORMATETC cfFromMime(QString const & mimetype)
 483 {
 484         FORMATETC formatetc;
 485         if (mimetype == emfMimeType()) {
 486                 formatetc.cfFormat = CF_ENHMETAFILE;
 487                 formatetc.tymed = TYMED_ENHMF;
 488         } else if (mimetype == wmfMimeType()) {
 489                 formatetc.cfFormat = CF_METAFILEPICT;
 490                 formatetc.tymed = TYMED_MFPICT;
 491         }
 492         formatetc.ptd = 0;
 493         formatetc.dwAspect = DVASPECT_CONTENT;
 494         formatetc.lindex = -1;
 495         return formatetc;
 496 }
 497
 498
 499 class QWindowsMimeMetafile : public QWindowsMime {
 500 public:
 501         QWindowsMimeMetafile() {}
 502
 503         bool canConvertFromMime(FORMATETC const & formatetc,
 504                 QMimeData const * mimedata) const
 505         {
 506                 return false;
 507         }
 508
 509         bool canConvertToMime(QString const & mimetype,
 510                 IDataObject * pDataObj) const
 511         {
 512                 if (mimetype != emfMimeType() && mimetype != wmfMimeType())
 513                         return false;
 514                 FORMATETC formatetc = cfFromMime(mimetype);
 515                 return pDataObj->QueryGetData(&formatetc) == S_OK;
 516         }
 517
 518         bool convertFromMime(FORMATETC const & formatetc,
 519                 const QMimeData * mimedata, STGMEDIUM * pmedium) const
 520         {
 521                 return false;
 522         }
 523
 524         QVariant convertToMime(QString const & mimetype, IDataObject * pDataObj,
 525                 QVariant::Type preferredType) const
 526         {
 527                 QByteArray data;
 528                 if (!canConvertToMime(mimetype, pDataObj))
 529                         return data;
 530
 531                 FORMATETC formatetc = cfFromMime(mimetype);
 532                 STGMEDIUM s;
 533                 if (pDataObj->GetData(&formatetc, &s) != S_OK)
 534                         return data;
 535
 536                 int dataSize;
 537                 if (s.tymed == TYMED_ENHMF) {
 538                         dataSize = GetEnhMetaFileBits(s.hEnhMetaFile, 0, 0);
 539                         data.resize(dataSize);
 540                         dataSize = GetEnhMetaFileBits(s.hEnhMetaFile, dataSize,
 541                                 (LPBYTE)data.data());
 542                 } else if (s.tymed == TYMED_MFPICT) {
 543                         dataSize = GetMetaFileBitsEx((HMETAFILE)s.hMetaFilePict, 0, 0);
 544                         data.resize(dataSize);
 545                         dataSize = GetMetaFileBitsEx((HMETAFILE)s.hMetaFilePict, dataSize,
 546                                 (LPBYTE)data.data());
 547                 }
 548                 data.detach();
 549                 ReleaseStgMedium(&s);
 550
 551                 return data;
 552         }
 553
 554
 555         QVector<FORMATETC> formatsForMime(QString const & mimeType,
 556                 QMimeData const * mimeData) const
 557         {
 558                 QVector<FORMATETC> formats;
 559                 formats += cfFromMime(mimeType);
 560                 return formats;
 561         }
 562
 563         QString mimeForFormat(FORMATETC const & formatetc) const
 564         {
 565                 switch (formatetc.cfFormat) {
 566                 case CF_ENHMETAFILE:
 567                         return emfMimeType();
 568                 case CF_METAFILEPICT:
 569                         return wmfMimeType();
 570                 }
 571                 return QString();
 572         }
 573 };
 574
 575 #endif // Q_WS_WIN
 576
 577 ////////////////////////////////////////////////////////////////////////
 578 // GuiApplication::Private definition and implementation.
 579 ////////////////////////////////////////////////////////////////////////
 580
 581 struct GuiApplication::Private
 582 {
 583         Private()
 584                 : language_model_(0), global_menubar_(0)
 585         {
 586 #ifdef Q_WS_MACX
 587                 // Create the global default menubar which is shown for the dialogs
 588                 // and if no GuiView is visible.
 589                 global_menubar_ = new GlobalMenuBar();
 590 #endif
 591         }
 592
 593         ///
 594         QSortFilterProxyModel * language_model_;
 595         ///
 596         GuiClipboard clipboard_;
 597         ///
 598         GuiSelection selection_;
 599         ///
 600         FontLoader font_loader_;
 601         ///
 602         ColorCache color_cache_;
 603         ///
 604         QTranslator qt_trans_;
 605         ///
 606         QHash<int, SocketNotifier *> socket_notifiers_;
 607         ///
 608         Menus menus_;
 609         ///
 610         /// The global instance
 611         Toolbars toolbars_;
 612
 613         /// this timer is used for any regular events one wants to
 614         /// perform. at present it is used to check if forked processes
 615         /// are done.
 616         QTimer general_timer_;
 617
 618         /// Multiple views container.
 619         /**
 620         * Warning: This must not be a smart pointer as the destruction of the
 621         * object is handled by Qt when the view is closed
 622         * \sa Qt::WA_DeleteOnClose attribute.
 623         */
 624         QHash<int, GuiView *> views_;
 625
 626         /// Only used on mac.
 627         GlobalMenuBar * global_menubar_;
 628
 629 #ifdef Q_WS_MACX
 630         /// Linkback mime handler for MacOSX.
 631         QMacPasteboardMimeGraphics mac_pasteboard_mime_;
 632 #endif
 633
 634 #ifdef Q_WS_WIN
 635         /// WMF Mime handler for Windows clipboard.
 636         /// \warning: see comment in ~GuiApplication and in bug 4846.
 637         QWindowsMimeMetafile wmf_mime_;
 638 #endif
 639 };
 640
 641
 642 GuiApplication * guiApp;
 643
 644 GuiApplication::~GuiApplication()
 645 {
 646 #ifdef Q_WS_MACX
 647         closeAllLinkBackLinks();
 648 #endif
 649         // FIXME: Work around bug 4846 for Windows Vista and Qt4
 650         // (see http://bugzilla.lyx.org/show_bug.cgi?id=4846)
 651         // If the clipboard is not cleared, LyX crashes on exit when it is
 652         // compiled in release mode and if there is something in the clipboard.
 653         // This is related to QWindowsMimeMetafile which is apparently not
 654         // properly destroyed.
 655         qApp->clipboard()->clear(QClipboard::Clipboard);
 656         delete d;
 657 }
 658
 659
 660 GuiApplication::GuiApplication(int & argc, char ** argv)
 661         : QApplication(argc, argv),     current_view_(0), d(new GuiApplication::Private)
 662 {
 663         QString app_name = "LyX";
 664         QCoreApplication::setOrganizationName(app_name);
 665         QCoreApplication::setOrganizationDomain("lyx.org");
 666         QCoreApplication::setApplicationName(app_name + "-" + lyx_version);
 667
 668         // Install translator for GUI elements.
 669         installTranslator(&d->qt_trans_);
 670
 671         // FIXME: quitOnLastWindowClosed is true by default. We should have a
 672         // lyxrc setting for this in order to let the application stay resident.
 673         // But then we need some kind of dock icon, at least on Windows.
 674         /*
 675         if (lyxrc.quit_on_last_window_closed)
 676                 setQuitOnLastWindowClosed(false);
 677         */
 678 #ifdef Q_WS_MACX
 679         // FIXME: Do we need a lyxrc setting for this on Mac? This behaviour
 680         // seems to be the default case for applications like LyX.
 681         setQuitOnLastWindowClosed(false);
 682
 683         // This allows to translate the strings that appear in the LyX menu.
 684         /// A translator suitable for the entries in the LyX menu.
 685         /// Only needed with Qt/Mac.
 686         installTranslator(new MenuTranslator(this));
 687 #endif
 688
 689 #ifdef Q_WS_X11
 690         // doubleClickInterval() is 400 ms on X11 which is just too long.
 691         // On Windows and Mac OS X, the operating system's value is used.
 692         // On Microsoft Windows, calling this function sets the double
 693         // click interval for all applications. So we don't!
 694         QApplication::setDoubleClickInterval(300);
 695 #endif
 696
 697         connect(this, SIGNAL(lastWindowClosed()), this, SLOT(onLastWindowClosed()));
 698
 699         // needs to be done before reading lyxrc
 700         QWidget w;
 701         lyxrc.dpi = (w.logicalDpiX() + w.logicalDpiY()) / 2;
 702
 703         guiApp = this;
 704
 705         // Set the cache to 5120 kilobytes which corresponds to screen size of
 706         // 1280 by 1024 pixels with a color depth of 32 bits.
 707         QPixmapCache::setCacheLimit(5120);
 708
 709         // Initialize RC Fonts
 710         if (lyxrc.roman_font_name.empty())
 711                 lyxrc.roman_font_name = fromqstr(romanFontName());
 712
 713         if (lyxrc.sans_font_name.empty())
 714                 lyxrc.sans_font_name = fromqstr(sansFontName());
 715
 716         if (lyxrc.typewriter_font_name.empty())
 717                 lyxrc.typewriter_font_name = fromqstr(typewriterFontName());
 718
 719         d->general_timer_.setInterval(500);
 720         connect(&d->general_timer_, SIGNAL(timeout()),
 721                 this, SLOT(handleRegularEvents()));
 722         d->general_timer_.start();
 723 }
 724
 725
 726 void GuiApplication::clearSession()
 727 {
 728         QSettings settings;
 729         settings.clear();
 730 }
 731
 732
 733 docstring GuiApplication::iconName(FuncRequest const & f, bool unknown)
 734 {
 735         return qstring_to_ucs4(lyx::frontend::iconName(f, unknown));
 736 }
 737
 738
 739
 740 bool GuiApplication::getStatus(FuncRequest const & cmd, FuncStatus & flag) const
 741 {
 742         bool enable = true;
 743
 744         switch(cmd.action) {
 745
 746         case LFUN_WINDOW_CLOSE:
 747                 enable = d->views_.size() > 0;
 748                 break;
 749
 750         case LFUN_BUFFER_NEW:
 751         case LFUN_BUFFER_NEW_TEMPLATE:
 752         case LFUN_FILE_OPEN:
 753         case LFUN_SCREEN_FONT_UPDATE:
 754         case LFUN_SET_COLOR:
 755         case LFUN_WINDOW_NEW:
 756         case LFUN_LYX_QUIT:
 757                 enable = true;
 758                 break;
 759
 760         default:
 761                 return false;
 762         }
 763
 764         if (!enable)
 765                 flag.setEnabled(false);
 766
 767         return true;
 768 }
 769
 770
 771 bool GuiApplication::dispatch(FuncRequest const & cmd)
 772 {
 773         switch (cmd.action) {
 774
 775         case LFUN_WINDOW_NEW:
 776                 createView(toqstr(cmd.argument()));
 777                 break;
 778
 779         case LFUN_WINDOW_CLOSE:
 780                 // update bookmark pit of the current buffer before window close
 781                 for (size_t i = 0; i < theSession().bookmarks().size(); ++i)
 782                         theLyXFunc().gotoBookmark(i+1, false, false);
 783                 current_view_->close();
 784                 break;
 785
 786         case LFUN_LYX_QUIT:
 787                 // quitting is triggered by the gui code
 788                 // (leaving the event loop).
 789                 if (current_view_)
 790                         current_view_->message(from_utf8(N_("Exiting.")));
 791                 if (closeAllViews())
 792                         quit();
 793                 break;
 794
 795         case LFUN_SCREEN_FONT_UPDATE: {
 796                 // handle the screen font changes.
 797                 d->font_loader_.update();
 798                 // Backup current_view_
 799                 GuiView * view = current_view_;
 800                 // Set current_view_ to zero to forbid GuiWorkArea::redraw()
 801                 // to skip the refresh.
 802                 current_view_ = 0;
 803                 BufferList::iterator it = theBufferList().begin();
 804                 BufferList::iterator const end = theBufferList().end();
 805                 for (; it != end; ++it)
 806                         (*it)->changed();
 807                 // Restore current_view_
 808                 current_view_ = view;
 809                 break;
 810         }
 811
 812         case LFUN_BUFFER_NEW:
 813                 if (d->views_.empty()
 814                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 815                         createView(QString(), false); // keep hidden
 816                         current_view_->newDocument(to_utf8(cmd.argument()), false);
 817                         current_view_->show();
 818                         setActiveWindow(current_view_);
 819                 } else {
 820                         current_view_->newDocument(to_utf8(cmd.argument()), false);
 821                 }
 822                 break;
 823
 824         case LFUN_BUFFER_NEW_TEMPLATE:
 825                 if (d->views_.empty()
 826                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 827                         createView();
 828                         current_view_->newDocument(to_utf8(cmd.argument()), true);
 829                         if (!current_view_->buffer())
 830                                 current_view_->close();
 831                 } else {
 832                         current_view_->newDocument(to_utf8(cmd.argument()), true);
 833                 }
 834                 break;
 835
 836         case LFUN_FILE_OPEN:
 837                 if (d->views_.empty()
 838                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 839                         string const fname = to_utf8(cmd.argument());
 840                         // We want the ui session to be saved per document and not per
 841                         // window number. The filename crc is a good enough identifier.
 842                         boost::crc_32_type crc;
 843                         crc = for_each(fname.begin(), fname.end(), crc);
 844                         createView(crc.checksum());
 845                         current_view_->openDocument(fname);
 846                         if (!current_view_->buffer())
 847                                 current_view_->close();
 848                 } else
 849                         current_view_->openDocument(to_utf8(cmd.argument()));
 850                 break;
 851
 852         case LFUN_SET_COLOR: {
 853                 string lyx_name;
 854                 string const x11_name = split(to_utf8(cmd.argument()), lyx_name, ' ');
 855                 if (lyx_name.empty() || x11_name.empty()) {
 856                         current_view_->message(
 857                                 _("Syntax: set-color <lyx_name> <x11_name>"));
 858                         break;
 859                 }
 860
 861                 string const graphicsbg = lcolor.getLyXName(Color_graphicsbg);
 862                 bool const graphicsbg_changed = lyx_name == graphicsbg
 863                         && x11_name != graphicsbg;
 864                 if (graphicsbg_changed) {
 865                         // FIXME: The graphics cache no longer has a changeDisplay method.
 866 #if 0
 867                         graphics::GCache::get().changeDisplay(true);
 868 #endif
 869                 }
 870
 871                 if (!lcolor.setColor(lyx_name, x11_name)) {
 872                         current_view_->message(
 873                                         bformat(_("Set-color \"%1$s\" failed "
 874                                                                "- color is undefined or "
 875                                                                "may not be redefined"),
 876                                                                    from_utf8(lyx_name)));
 877                         break;
 878                 }
 879                 // Make sure we don't keep old colors in cache.
 880                 d->color_cache_.clear();
 881                 break;
 882         }
 883
 884         default:
 885                 // Notify the caller that the action has not been dispatched.
 886                 return false;
 887         }
 888
 889         // The action has been dispatched.
 890         return true;
 891 }
 892
 893
 894 void GuiApplication::resetGui()
 895 {
 896         // Set the language defined by the user.
 897         setGuiLanguage();
 898
 899         // Read menus
 900         if (!readUIFile(toqstr(lyxrc.ui_file)))
 901                 // Gives some error box here.
 902                 return;
 903
 904 #ifdef Q_WS_MACX
 905         d->global_menubar_->clear();
 906         delete d->global_menubar_;
 907         // Create the global default menubar which is shown for the dialogs
 908         // and if no GuiView is visible.
 909         d->global_menubar_ = new GlobalMenuBar();
 910
 911         // init the global menubar on Mac. This must be done after the session
 912         // was recovered to know the "last files".
 913         d->menus_.fillMenuBar(d->global_menubar_, 0, true);
 914 #endif
 915
 916         QHash<int, GuiView *>::iterator it;
 917         for (it = d->views_.begin(); it != d->views_.end(); ++it) {
 918                 GuiView * gv = *it;
 919                 gv->setLayoutDirection(layoutDirection());
 920                 gv->resetDialogs();
 921         }
 922
 923         dispatch(FuncRequest(LFUN_SCREEN_FONT_UPDATE));
 924 }
 925
 926
 927 void GuiApplication::createView(int view_id)
 928 {
 929         createView(QString(), true, view_id);
 930 }
 931
 932
 933 void GuiApplication::createView(QString const & geometry_arg, bool autoShow,
 934         int view_id)
 935 {
 936         // release the keyboard which might have been grabed by the global
 937         // menubar on Mac to catch shortcuts even without any GuiView.
 938         if (d->global_menubar_)
 939                 d->global_menubar_->releaseKeyboard();
 940
 941         // create new view
 942         int id = view_id;
 943         if (id == 0) {
 944                 while (d->views_.find(id) != d->views_.end())
 945                         id++;
 946         }
 947         LYXERR(Debug::GUI, "About to create new window with ID " << id);
 948         GuiView * view = new GuiView(id);
 949         // register view
 950         d->views_[id] = view;
 951
 952         if (autoShow) {
 953                 view->show();
 954                 setActiveWindow(view);
 955         }
 956
 957         if (!geometry_arg.isEmpty()) {
 958 #ifdef Q_WS_WIN
 959                 int x, y;
 960                 int w, h;
 961                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
 962                 re.indexIn(geometry_arg);
 963                 w = re.cap(1).toInt();
 964                 h = re.cap(2).toInt();
 965                 x = re.cap(3).toInt();
 966                 y = re.cap(4).toInt();
 967                 view->setGeometry(x, y, w, h);
 968 #endif
 969         }
 970         view->setFocus();
 971 }
 972
 973
 974 Clipboard & GuiApplication::clipboard()
 975 {
 976         return d->clipboard_;
 977 }
 978
 979
 980 Selection & GuiApplication::selection()
 981 {
 982         return d->selection_;
 983 }
 984
 985
 986 FontLoader & GuiApplication::fontLoader()
 987 {
 988         return d->font_loader_;
 989 }
 990
 991
 992 Toolbars const & GuiApplication::toolbars() const
 993 {
 994         return d->toolbars_;
 995 }
 996
 997
 998 Toolbars & GuiApplication::toolbars()
 999 {
1000         return d->toolbars_;
1001 }
1002
1003
1004 Menus const & GuiApplication::menus() const
1005 {
1006         return d->menus_;
1007 }
1008
1009
1010 Menus & GuiApplication::menus()
1011 {
1012         return d->menus_;
1013 }
1014
1015
1016 QList<int> GuiApplication::viewIds() const
1017 {
1018         return d->views_.keys();
1019 }
1020
1021
1022 ColorCache & GuiApplication::colorCache()
1023 {
1024         return d->color_cache_;
1025 }
1026
1027
1028 int GuiApplication::exec()
1029 {
1030         QTimer::singleShot(1, this, SLOT(execBatchCommands()));
1031         return QApplication::exec();
1032 }
1033
1034
1035 void GuiApplication::exit(int status)
1036 {
1037         QApplication::exit(status);
1038 }
1039
1040
1041 void GuiApplication::setGuiLanguage()
1042 {
1043         // Set the language defined by the user.
1044         setRcGuiLanguage();
1045
1046         QString const default_language = toqstr(Messages::defaultLanguage());
1047         LYXERR(Debug::LOCALE, "Tring to set default locale to: " << default_language);
1048         QLocale const default_locale(default_language);
1049         QLocale::setDefault(default_locale);
1050
1051         // install translation file for Qt built-in dialogs
1052         QString const language_name = QString("qt_") + default_locale.name();
1053
1054         // language_name can be short (e.g. qt_zh) or long (e.g. qt_zh_CN).
1055         // Short-named translator can be loaded from a long name, but not the
1056         // opposite. Therefore, long name should be used without truncation.
1057         // c.f. http://doc.trolltech.com/4.1/qtranslator.html#load
1058         if (!d->qt_trans_.load(language_name,
1059                         QLibraryInfo::location(QLibraryInfo::TranslationsPath))) {
1060                 LYXERR(Debug::LOCALE, "Could not find  Qt translations for locale "
1061                         << language_name);
1062         } else {
1063                 LYXERR(Debug::LOCALE, "Successfully installed Qt translations for locale "
1064                         << language_name);
1065         }
1066
1067         switch (default_locale.language()) {
1068         case QLocale::Arabic :
1069         case QLocale::Hebrew :
1070         case QLocale::Persian :
1071         case QLocale::Urdu :
1072         setLayoutDirection(Qt::RightToLeft);
1073                 break;
1074         default:
1075         setLayoutDirection(Qt::LeftToRight);
1076         }
1077 }
1078
1079
1080 void GuiApplication::execBatchCommands()
1081 {
1082         setGuiLanguage();
1083
1084         // Read menus
1085         if (!readUIFile(toqstr(lyxrc.ui_file)))
1086                 // Gives some error box here.
1087                 return;
1088
1089         // init the global menubar on Mac. This must be done after the session
1090         // was recovered to know the "last files".
1091         if (d->global_menubar_)
1092                 d->menus_.fillMenuBar(d->global_menubar_, 0, true);
1093
1094         lyx::execBatchCommands();
1095 }
1096
1097
1098 QAbstractItemModel * GuiApplication::languageModel()
1099 {
1100         if (d->language_model_)
1101                 return d->language_model_;
1102
1103         QStandardItemModel * lang_model = new QStandardItemModel(this);
1104         lang_model->insertColumns(0, 1);
1105         int current_row;
1106         Languages::const_iterator it = languages.begin();
1107         Languages::const_iterator end = languages.end();
1108         for (; it != end; ++it) {
1109                 current_row = lang_model->rowCount();
1110                 lang_model->insertRows(current_row, 1);
1111                 QModelIndex item = lang_model->index(current_row, 0);
1112                 lang_model->setData(item, qt_(it->second.display()), Qt::DisplayRole);
1113                 lang_model->setData(item, toqstr(it->second.lang()), Qt::UserRole);
1114         }
1115         d->language_model_ = new QSortFilterProxyModel(this);
1116         d->language_model_->setSourceModel(lang_model);
1117 #if QT_VERSION >= 0x040300
1118         d->language_model_->setSortLocaleAware(true);
1119 #endif
1120         return d->language_model_;
1121 }
1122
1123
1124 void GuiApplication::restoreGuiSession()
1125 {
1126         if (!lyxrc.load_session)
1127                 return;
1128
1129         Session & session = theSession();
1130         vector<FileName> const & lastopened = session.lastOpened().getfiles();
1131         // do not add to the lastfile list since these files are restored from
1132         // last session, and should be already there (regular files), or should
1133         // not be added at all (help files).
1134         for_each(lastopened.begin(), lastopened.end(),
1135                 bind(&GuiView::loadDocument, current_view_, _1, false));
1136
1137         // clear this list to save a few bytes of RAM
1138         session.lastOpened().clear();
1139 }
1140
1141
1142 QString const GuiApplication::romanFontName()
1143 {
1144         QFont font;
1145         font.setKerning(false);
1146         font.setStyleHint(QFont::Serif);
1147         font.setFamily("serif");
1148
1149         return QFontInfo(font).family();
1150 }
1151
1152
1153 QString const GuiApplication::sansFontName()
1154 {
1155         QFont font;
1156         font.setKerning(false);
1157         font.setStyleHint(QFont::SansSerif);
1158         font.setFamily("sans");
1159
1160         return QFontInfo(font).family();
1161 }
1162
1163
1164 QString const GuiApplication::typewriterFontName()
1165 {
1166         QFont font;
1167         font.setKerning(false);
1168         font.setStyleHint(QFont::TypeWriter);
1169         font.setFamily("monospace");
1170
1171         return QFontInfo(font).family();
1172 }
1173
1174
1175 void GuiApplication::handleRegularEvents()
1176 {
1177         ForkedCallsController::handleCompletedProcesses();
1178 }
1179
1180
1181 bool GuiApplication::event(QEvent * e)
1182 {
1183         switch(e->type()) {
1184         case QEvent::FileOpen: {
1185                 // Open a file; this happens only on Mac OS X for now
1186                 QFileOpenEvent * foe = static_cast<QFileOpenEvent *>(e);
1187                 lyx::dispatch(FuncRequest(LFUN_FILE_OPEN,
1188                         qstring_to_ucs4(foe->file())));
1189                 e->accept();
1190                 return true;
1191         }
1192         default:
1193                 return QApplication::event(e);
1194         }
1195 }
1196
1197
1198 bool GuiApplication::notify(QObject * receiver, QEvent * event)
1199 {
1200         try {
1201                 return QApplication::notify(receiver, event);
1202         }
1203         catch (ExceptionMessage const & e) {
1204                 switch(e.type_) {
1205                 case ErrorException:
1206                         emergencyCleanup();
1207                         setQuitOnLastWindowClosed(false);
1208                         closeAllViews();
1209                         Alert::error(e.title_, e.details_);
1210 #ifndef NDEBUG
1211                         // Properly crash in debug mode in order to get a useful backtrace.
1212                         abort();
1213 #endif
1214                         // In release mode, try to exit gracefully.
1215                         this->exit(1);
1216
1217                 case BufferException: {
1218                         Buffer * buf = current_view_->buffer();
1219                         docstring details = e.details_ + '\n';
1220                         details += theBufferList().emergencyWrite(buf);
1221                         theBufferList().release(buf);
1222                         details += "\n" + _("The current document was closed.");
1223                         Alert::error(e.title_, details);
1224                         return false;
1225                 }
1226                 case WarningException:
1227                         Alert::warning(e.title_, e.details_);
1228                         return false;
1229                 }
1230         }
1231         catch (exception const & e) {
1232                 docstring s = _("LyX has caught an exception, it will now "
1233                         "attempt to save all unsaved documents and exit."
1234                         "\n\nException: ");
1235                 s += from_ascii(e.what());
1236                 Alert::error(_("Software exception Detected"), s);
1237                 lyx_exit(1);
1238         }
1239         catch (...) {
1240                 docstring s = _("LyX has caught some really weird exception, it will "
1241                         "now attempt to save all unsaved documents and exit.");
1242                 Alert::error(_("Software exception Detected"), s);
1243                 lyx_exit(1);
1244         }
1245
1246         return false;
1247 }
1248
1249
1250 bool GuiApplication::getRgbColor(ColorCode col, RGBColor & rgbcol)
1251 {
1252         QColor const & qcol = d->color_cache_.get(col);
1253         if (!qcol.isValid()) {
1254                 rgbcol.r = 0;
1255                 rgbcol.g = 0;
1256                 rgbcol.b = 0;
1257                 return false;
1258         }
1259         rgbcol.r = qcol.red();
1260         rgbcol.g = qcol.green();
1261         rgbcol.b = qcol.blue();
1262         return true;
1263 }
1264
1265
1266 string const GuiApplication::hexName(ColorCode col)
1267 {
1268         return ltrim(fromqstr(d->color_cache_.get(col).name()), "#");
1269 }
1270
1271
1272 void GuiApplication::registerSocketCallback(int fd, SocketCallback func)
1273 {
1274         SocketNotifier * sn = new SocketNotifier(this, fd, func);
1275         d->socket_notifiers_[fd] = sn;
1276         connect(sn, SIGNAL(activated(int)), this, SLOT(socketDataReceived(int)));
1277 }
1278
1279
1280 void GuiApplication::socketDataReceived(int fd)
1281 {
1282         d->socket_notifiers_[fd]->func_();
1283 }
1284
1285
1286 void GuiApplication::unregisterSocketCallback(int fd)
1287 {
1288         d->socket_notifiers_.take(fd)->setEnabled(false);
1289 }
1290
1291
1292 void GuiApplication::commitData(QSessionManager & sm)
1293 {
1294         /// The implementation is required to avoid an application exit
1295         /// when session state save is triggered by session manager.
1296         /// The default implementation sends a close event to all
1297         /// visible top level widgets when session managment allows
1298         /// interaction.
1299         /// We are changing that to close all wiew one by one.
1300         /// FIXME: verify if the default implementation is enough now.
1301         if (sm.allowsInteraction() && !closeAllViews())
1302                 sm.cancel();
1303 }
1304
1305
1306 void GuiApplication::unregisterView(GuiView * gv)
1307 {
1308         LASSERT(d->views_[gv->id()] == gv, /**/);
1309         d->views_.remove(gv->id());
1310         if (current_view_ == gv) {
1311                 current_view_ = 0;
1312                 theLyXFunc().setLyXView(0);
1313         }
1314 }
1315
1316
1317 bool GuiApplication::closeAllViews()
1318 {
1319         if (d->views_.empty())
1320                 return true;
1321
1322         QList<GuiView *> views = d->views_.values();
1323         foreach (GuiView * view, views) {
1324                 if (!view->close())
1325                         return false;
1326         }
1327
1328         d->views_.clear();
1329         return true;
1330 }
1331
1332
1333 GuiView & GuiApplication::view(int id) const
1334 {
1335         LASSERT(d->views_.contains(id), /**/);
1336         return *d->views_.value(id);
1337 }
1338
1339
1340 void GuiApplication::hideDialogs(string const & name, Inset * inset) const
1341 {
1342         QList<GuiView *> views = d->views_.values();
1343         foreach (GuiView * view, views)
1344                 view->hideDialog(name, inset);
1345 }
1346
1347
1348 Buffer const * GuiApplication::updateInset(Inset const * inset) const
1349 {
1350         Buffer const * buffer_ = 0;
1351         QHash<int, GuiView *>::iterator end = d->views_.end();
1352         for (QHash<int, GuiView *>::iterator it = d->views_.begin(); it != end; ++it) {
1353                 if (Buffer const * ptr = (*it)->updateInset(inset))
1354                         buffer_ = ptr;
1355         }
1356         return buffer_;
1357 }
1358
1359
1360 bool GuiApplication::searchMenu(FuncRequest const & func,
1361         docstring_list & names) const
1362 {
1363         return d->menus_.searchMenu(func, names);
1364 }
1365
1366
1367 bool GuiApplication::readUIFile(QString const & name, bool include)
1368 {
1369         enum {
1370                 ui_menuset = 1,
1371                 ui_toolbars,
1372                 ui_toolbarset,
1373                 ui_include,
1374                 ui_last
1375         };
1376
1377         LexerKeyword uitags[] = {
1378                 { "include", ui_include },
1379                 { "menuset", ui_menuset },
1380                 { "toolbars", ui_toolbars },
1381                 { "toolbarset", ui_toolbarset }
1382         };
1383
1384         LYXERR(Debug::INIT, "About to read " << name << "...");
1385
1386         FileName ui_path;
1387         if (include) {
1388                 ui_path = libFileSearch("ui", name, "inc");
1389                 if (ui_path.empty())
1390                         ui_path = libFileSearch("ui", changeExtension(name, "inc"));
1391         } else {
1392                 ui_path = libFileSearch("ui", name, "ui");
1393         }
1394
1395         if (ui_path.empty()) {
1396                 LYXERR(Debug::INIT, "Could not find " << name);
1397                 Alert::warning(_("Could not find UI definition file"),
1398                                bformat(_("Error while reading the configuration file\n%1$s.\n"
1399                                    "Please check your installation."), qstring_to_ucs4(name)));
1400                 return false;
1401         }
1402
1403
1404         // Ensure that a file is read only once (prevents include loops)
1405         static QStringList uifiles;
1406         QString const uifile = toqstr(ui_path.absFilename());
1407         if (uifiles.contains(uifile)) {
1408                 if (!include) {
1409                         // We are reading again the top uifile so reset the safeguard:
1410                         uifiles.clear();
1411                         d->menus_.reset();
1412                         d->toolbars_.reset();
1413                 } else {
1414                         LYXERR(Debug::INIT, "UI file '" << name << "' has been read already. "
1415                                 << "Is this an include loop?");
1416                         return false;
1417                 }
1418         }
1419         uifiles.push_back(uifile);
1420
1421         LYXERR(Debug::INIT, "Found " << name << " in " << ui_path);
1422
1423         Lexer lex(uitags);
1424         lex.setFile(ui_path);
1425         if (!lex.isOK()) {
1426                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
1427                        << endl;
1428         }
1429
1430         if (lyxerr.debugging(Debug::PARSER))
1431                 lex.printTable(lyxerr);
1432
1433         while (lex.isOK()) {
1434                 switch (lex.lex()) {
1435                 case ui_include: {
1436                         lex.next(true);
1437                         QString const file = toqstr(lex.getString());
1438                         if (!readUIFile(file, true))
1439                                 return false;
1440                         break;
1441                 }
1442                 case ui_menuset:
1443                         d->menus_.read(lex);
1444                         break;
1445
1446                 case ui_toolbarset:
1447                         d->toolbars_.readToolbars(lex);
1448                         break;
1449
1450                 case ui_toolbars:
1451                         d->toolbars_.readToolbarSettings(lex);
1452                         break;
1453
1454                 default:
1455                         if (!rtrim(lex.getString()).empty())
1456                                 lex.printError("LyX::ReadUIFile: "
1457                                                "Unknown menu tag: `$$Token'");
1458                         break;
1459                 }
1460         }
1461
1462         if (include)
1463                 return true;
1464
1465         QSettings settings;
1466         settings.beginGroup("ui_files");
1467         bool touched = false;
1468         for (int i = 0; i != uifiles.size(); ++i) {
1469                 QFileInfo fi(uifiles[i]);
1470                 QDateTime const date_value = fi.lastModified();
1471                 QString const name_key = QString::number(i);
1472                 if (!settings.contains(name_key)
1473                  || settings.value(name_key).toString() != uifiles[i]
1474                  || settings.value(name_key + "/date").toDateTime() != date_value) {
1475                         touched = true;
1476                         settings.setValue(name_key, uifiles[i]);
1477                         settings.setValue(name_key + "/date", date_value);
1478                 }
1479         }
1480         settings.endGroup();
1481         if (touched)
1482                 settings.remove("views");
1483
1484         return true;
1485 }
1486
1487
1488 void GuiApplication::onLastWindowClosed()
1489 {
1490         if (d->global_menubar_)
1491                 d->global_menubar_->grabKeyboard();
1492 }
1493
1494
1495 ////////////////////////////////////////////////////////////////////////
1496 //
1497 // X11 specific stuff goes here...
1498
1499 #ifdef Q_WS_X11
1500 bool GuiApplication::x11EventFilter(XEvent * xev)
1501 {
1502         if (!current_view_)
1503                 return false;
1504
1505         switch (xev->type) {
1506         case SelectionRequest: {
1507                 if (xev->xselectionrequest.selection != XA_PRIMARY)
1508                         break;
1509                 LYXERR(Debug::SELECTION, "X requested selection.");
1510                 BufferView * bv = current_view_->view();
1511                 if (bv) {
1512                         docstring const sel = bv->requestSelection();
1513                         if (!sel.empty())
1514                                 d->selection_.put(sel);
1515                 }
1516                 break;
1517         }
1518         case SelectionClear: {
1519                 if (xev->xselectionclear.selection != XA_PRIMARY)
1520                         break;
1521                 LYXERR(Debug::SELECTION, "Lost selection.");
1522                 BufferView * bv = current_view_->view();
1523                 if (bv)
1524                         bv->clearSelection();
1525                 break;
1526         }
1527         }
1528         return false;
1529 }
1530 #endif
1531
1532 } // namespace frontend
1533
1534
1535 void hideDialogs(std::string const & name, Inset * inset)
1536 {
1537         if (theApp())
1538                 theApp()->hideDialogs(name, inset);
1539 }
1540
1541
1542 ////////////////////////////////////////////////////////////////////
1543 //
1544 // Font stuff
1545 //
1546 ////////////////////////////////////////////////////////////////////
1547
1548 frontend::FontLoader & theFontLoader()
1549 {
1550         LASSERT(frontend::guiApp, /**/);
1551         return frontend::guiApp->fontLoader();
1552 }
1553
1554
1555 frontend::FontMetrics const & theFontMetrics(Font const & f)
1556 {
1557         return theFontMetrics(f.fontInfo());
1558 }
1559
1560
1561 frontend::FontMetrics const & theFontMetrics(FontInfo const & f)
1562 {
1563         LASSERT(frontend::guiApp, /**/);
1564         return frontend::guiApp->fontLoader().metrics(f);
1565 }
1566
1567
1568 ////////////////////////////////////////////////////////////////////
1569 //
1570 // Misc stuff
1571 //
1572 ////////////////////////////////////////////////////////////////////
1573
1574 frontend::Clipboard & theClipboard()
1575 {
1576         LASSERT(frontend::guiApp, /**/);
1577         return frontend::guiApp->clipboard();
1578 }
1579
1580
1581 frontend::Selection & theSelection()
1582 {
1583         LASSERT(frontend::guiApp, /**/);
1584         return frontend::guiApp->selection();
1585 }
1586
1587 } // namespace lyx
1588
1589 #include "GuiApplication_moc.cpp"