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