src/frontends/qt4/GuiApplication.cpp

   1 /**
   2  * \file GuiApplication.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author unknown
   7  * \author John Levon
   8  * \author Abdelrazak Younes
   9  *
  10  * Full author contact details are available in file CREDITS.
  11  */
  12
  13 #include <config.h>
  14
  15 #include "GuiApplication.h"
  16
  17 #include "ColorCache.h"
  18 #include "ColorSet.h"
  19 #include "GuiClipboard.h"
  20 #include "GuiImage.h"
  21 #include "GuiKeySymbol.h"
  22 #include "GuiSelection.h"
  23 #include "GuiView.h"
  24 #include "Menus.h"
  25 #include "qt_helpers.h"
  26 #include "Toolbars.h"
  27
  28 #include "frontends/alert.h"
  29 #include "frontends/Application.h"
  30 #include "frontends/FontLoader.h"
  31 #include "frontends/FontMetrics.h"
  32
  33 #include "Buffer.h"
  34 #include "BufferList.h"
  35 #include "BufferView.h"
  36 #include "CmdDef.h"
  37 #include "Color.h"
  38 #include "Font.h"
  39 #include "FuncRequest.h"
  40 #include "FuncStatus.h"
  41 #include "Intl.h"
  42 #include "KeyMap.h"
  43 #include "Language.h"
  44 #include "LaTeXFeatures.h"
  45 #include "Lexer.h"
  46 #include "LyX.h"
  47 #include "LyXAction.h"
  48 #include "LyXRC.h"
  49 #include "Paragraph.h"
  50 #include "Server.h"
  51 #include "Session.h"
  52 #include "SpellChecker.h"
  53 #include "Thesaurus.h"
  54 #include "version.h"
  55
  56 #include "support/convert.h"
  57 #include "support/debug.h"
  58 #include "support/ExceptionMessage.h"
  59 #include "support/FileName.h"
  60 #include "support/filetools.h"
  61 #include "support/foreach.h"
  62 #include "support/ForkedCalls.h"
  63 #include "support/gettext.h"
  64 #include "support/lassert.h"
  65 #include "support/lstrings.h"
  66 #include "support/lyxalgo.h" // sorted
  67 #include "support/Messages.h"
  68 #include "support/os.h"
  69 #include "support/Package.h"
  70 #include "support/Path.h"
  71 #include "support/Systemcall.h"
  72
  73 #ifdef Q_WS_MACX
  74 #include "support/linkback/LinkBackProxy.h"
  75 #endif
  76
  77 #include <queue>
  78
  79 #include <QByteArray>
  80 #include <QClipboard>
  81 #include <QDateTime>
  82 #include <QDir>
  83 #include <QEventLoop>
  84 #include <QFileOpenEvent>
  85 #include <QFileInfo>
  86 #include <QHash>
  87 #include <QIcon>
  88 #include <QImageReader>
  89 #include <QLocale>
  90 #include <QLibraryInfo>
  91 #include <QList>
  92 #include <QMacPasteboardMime>
  93 #include <QMenuBar>
  94 #include <QMimeData>
  95 #include <QObject>
  96 #include <QPixmap>
  97 #include <QPixmapCache>
  98 #include <QRegExp>
  99 #include <QSessionManager>
 100 #include <QSettings>
 101 #include <QSocketNotifier>
 102 #include <QSortFilterProxyModel>
 103 #include <QStandardItemModel>
 104 #include <QTextCodec>
 105 #include <QTimer>
 106 #include <QTranslator>
 107 #if QT_VERSION >= 0x040400
 108 #include <QThreadPool>
 109 #endif
 110 #include <QWidget>
 111
 112 #ifdef Q_WS_X11
 113 #include <X11/Xatom.h>
 114 #include <X11/Xlib.h>
 115 #undef CursorShape
 116 #undef None
 117 #endif
 118
 119 #ifdef Q_WS_WIN
 120 #include <QWindowsMime>
 121 #ifdef Q_CC_GNU
 122 #include <wtypes.h>
 123 #endif
 124 #include <objidl.h>
 125 #endif // Q_WS_WIN
 126
 127 #include "support/bind.h"
 128 #include <boost/crc.hpp>
 129
 130 #include <exception>
 131 #include <sstream>
 132 #include <vector>
 133
 134 using namespace std;
 135 using namespace lyx::support;
 136
 137
 138 static void initializeResources()
 139 {
 140         static bool initialized = false;
 141         if (!initialized) {
 142                 Q_INIT_RESOURCE(Resources);
 143                 initialized = true;
 144         }
 145 }
 146
 147
 148 namespace lyx {
 149
 150 frontend::Application * createApplication(int & argc, char * argv[])
 151 {
 152 #ifndef Q_WS_X11
 153         // prune -geometry argument(s) by shifting
 154         // the following ones 2 places down.
 155         for (int i = 0 ; i < argc ; ++i) {
 156                 if (strcmp(argv[i], "-geometry") == 0) {
 157                         int const remove = (i+1) < argc ? 2 : 1;
 158                         argc -= remove;
 159                         for (int j = i; j < argc; ++j)
 160                                 argv[j] = argv[j + remove];
 161                         --i;
 162                 }
 163         }
 164 #endif
 165         frontend::GuiApplication * guiApp = new frontend::GuiApplication(argc, argv);
 166         // I'd rather do that in the constructor, but I do not think that
 167         // the palette is accessible there.
 168         guiApp->colorCache().setPalette(guiApp->palette());
 169         return guiApp;
 170 }
 171
 172 namespace frontend {
 173
 174
 175 /// Return the list of loadable formats.
 176 vector<string> loadableImageFormats()
 177 {
 178         vector<string> fmts;
 179
 180         QList<QByteArray> qt_formats = QImageReader::supportedImageFormats();
 181
 182         LYXERR(Debug::GRAPHICS,
 183                 "\nThe image loader can load the following directly:\n");
 184
 185         if (qt_formats.empty())
 186                 LYXERR(Debug::GRAPHICS, "\nQt4 Problem: No Format available!");
 187
 188         for (QList<QByteArray>::const_iterator it = qt_formats.begin(); it != qt_formats.end(); ++it) {
 189
 190                 LYXERR(Debug::GRAPHICS, (const char *) *it << ", ");
 191
 192                 string ext = ascii_lowercase((const char *) *it);
 193                 // special case
 194                 if (ext == "jpeg")
 195                         ext = "jpg";
 196                 fmts.push_back(ext);
 197         }
 198
 199         return fmts;
 200 }
 201
 202
 203 ////////////////////////////////////////////////////////////////////////
 204 //
 205 // Icon loading support code
 206 //
 207 ////////////////////////////////////////////////////////////////////////
 208
 209 namespace {
 210
 211 struct PngMap {
 212         QString key;
 213         QString value;
 214 };
 215
 216
 217 bool operator<(PngMap const & lhs, PngMap const & rhs)
 218 {
 219         return lhs.key < rhs.key;
 220 }
 221
 222
 223 class CompareKey {
 224 public:
 225         CompareKey(QString const & name) : name_(name) {}
 226         bool operator()(PngMap const & other) const { return other.key == name_; }
 227 private:
 228         QString const name_;
 229 };
 230
 231
 232 // this must be sorted alphabetically
 233 // Upper case comes before lower case
 234 PngMap sorted_png_map[] = {
 235         { "Bumpeq", "bumpeq2" },
 236         { "Cap", "cap2" },
 237         { "Cup", "cup2" },
 238         { "Delta", "delta2" },
 239         { "Diamond", "diamond2" },
 240         { "Downarrow", "downarrow2" },
 241         { "Gamma", "gamma2" },
 242         { "Lambda", "lambda2" },
 243         { "Leftarrow", "leftarrow2" },
 244         { "Leftrightarrow", "leftrightarrow2" },
 245         { "Longleftarrow", "longleftarrow2" },
 246         { "Longleftrightarrow", "longleftrightarrow2" },
 247         { "Longrightarrow", "longrightarrow2" },
 248         { "Omega", "omega2" },
 249         { "Phi", "phi2" },
 250         { "Pi", "pi2" },
 251         { "Psi", "psi2" },
 252         { "Rightarrow", "rightarrow2" },
 253         { "Sigma", "sigma2" },
 254         { "Subset", "subset2" },
 255         { "Supset", "supset2" },
 256         { "Theta", "theta2" },
 257         { "Uparrow", "uparrow2" },
 258         { "Updownarrow", "updownarrow2" },
 259         { "Upsilon", "upsilon2" },
 260         { "Vdash", "vdash3" },
 261         { "Vert", "vert2" },
 262         { "Xi", "xi2" },
 263         { "nLeftarrow", "nleftarrow2" },
 264         { "nLeftrightarrow", "nleftrightarrow2" },
 265         { "nRightarrow", "nrightarrow2" },
 266         { "nVDash", "nvdash3" },
 267         { "nvDash", "nvdash2" },
 268         { "textrm \\AA", "textrm_AA"},
 269         { "textrm \\O", "textrm_O"},
 270         { "vDash", "vdash2" }
 271 };
 272
 273 size_t const nr_sorted_png_map = sizeof(sorted_png_map) / sizeof(PngMap);
 274
 275
 276 QString findPng(QString const & name)
 277 {
 278         PngMap const * const begin = sorted_png_map;
 279         PngMap const * const end = begin + nr_sorted_png_map;
 280         LASSERT(sorted(begin, end), /**/);
 281
 282         PngMap const * const it = find_if(begin, end, CompareKey(name));
 283
 284         QString png_name;
 285         if (it != end) {
 286                 png_name = it->value;
 287         } else {
 288                 png_name = name;
 289                 png_name.replace('_', "underscore");
 290                 png_name.replace(' ', '_');
 291
 292                 // This way we can have "math-delim { }" on the toolbar.
 293                 png_name.replace('(', "lparen");
 294                 png_name.replace(')', "rparen");
 295                 png_name.replace('[', "lbracket");
 296                 png_name.replace(']', "rbracket");
 297                 png_name.replace('{', "lbrace");
 298                 png_name.replace('}', "rbrace");
 299                 png_name.replace('|', "bars");
 300                 png_name.replace(',', "thinspace");
 301                 png_name.replace(':', "mediumspace");
 302                 png_name.replace(';', "thickspace");
 303                 png_name.replace('!', "negthinspace");
 304         }
 305
 306         LYXERR(Debug::GUI, "findPng(" << name << ")\n"
 307                 << "Looking for math PNG called \"" << png_name << '"');
 308         return png_name;
 309 }
 310
 311 } // namespace anon
 312
 313
 314 QString iconName(FuncRequest const & f, bool unknown)
 315 {
 316         initializeResources();
 317         QString name1;
 318         QString name2;
 319         QString path;
 320         switch (f.action()) {
 321         case LFUN_MATH_INSERT:
 322                 if (!f.argument().empty()) {
 323                         path = "math/";
 324                         name1 = findPng(toqstr(f.argument()).mid(1));
 325                 }
 326                 break;
 327         case LFUN_MATH_DELIM:
 328         case LFUN_MATH_BIGDELIM:
 329                 path = "math/";
 330                 name1 = findPng(toqstr(f.argument()));
 331                 break;
 332         case LFUN_CALL:
 333                 path = "commands/";
 334                 name1 = toqstr(f.argument());
 335                 break;
 336         case LFUN_COMMAND_ALTERNATIVES: {
 337                 // use the first of the alternative commands
 338                 docstring firstcom;
 339                 docstring dummy = split(f.argument(), firstcom, ';');
 340                 name1 = toqstr(firstcom);
 341                 // FIXME: we should rename the icons to tabular-xxx instead of
 342                 // "tabular-feature-xxx"
 343                 name1.replace("inset-modify tabular", "tabular-feature");
 344                 name1.replace(' ', '_');
 345                 break;
 346         }
 347         case LFUN_INSET_MODIFY: {
 348                 // FIXME: we should rename the icons to tabular-xxx instead of
 349                 // "tabular-feature-xxx" and generalize this naming to all
 350                 // insets, not to tabular using ones.
 351                 string inset_name;
 352                 string const command = split(to_utf8(f.argument()), inset_name, ' ');
 353                 if (insetCode(inset_name) == TABULAR_CODE) {
 354                         name1 = "tabular-feature "+ toqstr(command);
 355                         name1.replace(' ', '_');
 356                         break;
 357                 }
 358         }
 359         default:
 360                 name2 = toqstr(lyxaction.getActionName(f.action()));
 361                 name1 = name2;
 362
 363                 if (!f.argument().empty()) {
 364                         name1 = name2 + ' ' + toqstr(f.argument());
 365                         name1.replace(' ', '_');
 366                         name1.replace('\\', "backslash");
 367                 }
 368         }
 369
 370         FileName fname = libFileSearch("images/" + path, name1, "png");
 371         if (fname.exists())
 372                 return toqstr(fname.absFileName());
 373
 374         fname = libFileSearch("images/" + path, name2, "png");
 375         if (fname.exists())
 376                 return toqstr(fname.absFileName());
 377
 378         path = ":/images/" + path;
 379         QDir res(path);
 380         if (!res.exists()) {
 381                 LYXERR0("Directory " << path << " not found in resource!");
 382                 return QString();
 383         }
 384         name1 += ".png";
 385         if (res.exists(name1))
 386                 return path + name1;
 387
 388         name2 += ".png";
 389         if (res.exists(name2))
 390                 return path + name2;
 391
 392         LYXERR(Debug::GUI, "Cannot find icon with filename "
 393                            << "\"" << name1 << "\""
 394                            << " or filename "
 395                            << "\"" << name2 << "\""
 396                            << " for command \""
 397                            << lyxaction.getActionName(f.action())
 398                            << '(' << to_utf8(f.argument()) << ")\"");
 399
 400         if (unknown) {
 401                 fname = libFileSearch(QString("images/"), "unknown", "png");
 402                 if (fname.exists())
 403                         return toqstr(fname.absFileName());
 404                 return QString(":/images/unknown.png");
 405         }
 406
 407         return QString();
 408 }
 409
 410 QPixmap getPixmap(QString const & path, QString const & name, QString const & ext)
 411 {
 412         QPixmap pixmap;
 413         FileName fname = libFileSearch(path, name, ext);
 414         QString path1 = toqstr(fname.absFileName());
 415         QString path2 = ":/" + path + name + "." + ext;
 416
 417         if (pixmap.load(path1)) {
 418                 return pixmap;
 419         }
 420         else if (pixmap.load(path2)) {
 421                 return pixmap;
 422         }
 423
 424         LYXERR0("Cannot load pixmap \""
 425                 << path << name << '.' << ext
 426                 << "\", please verify resource system!");
 427
 428         return QPixmap();
 429 }
 430
 431 QIcon getIcon(FuncRequest const & f, bool unknown)
 432 {
 433         QString icon = iconName(f, unknown);
 434         if (icon.isEmpty())
 435                 return QIcon();
 436
 437         //LYXERR(Debug::GUI, "Found icon: " << icon);
 438         QPixmap pm;
 439         if (!pm.load(icon)) {
 440                 LYXERR0("Cannot load icon " << icon << " please verify resource system!");
 441                 return QIcon();
 442         }
 443
 444         return QIcon(pm);
 445 }
 446
 447
 448 ////////////////////////////////////////////////////////////////////////
 449 //
 450 // LyX server support code.
 451 //
 452 ////////////////////////////////////////////////////////////////////////
 453
 454 class SocketNotifier : public QSocketNotifier
 455 {
 456 public:
 457         /// connect a connection notification from the LyXServerSocket
 458         SocketNotifier(QObject * parent, int fd, Application::SocketCallback func)
 459                 : QSocketNotifier(fd, QSocketNotifier::Read, parent), func_(func)
 460         {}
 461
 462 public:
 463         /// The callback function
 464         Application::SocketCallback func_;
 465 };
 466
 467
 468 ////////////////////////////////////////////////////////////////////////
 469 //
 470 // Mac specific stuff goes here...
 471 //
 472 ////////////////////////////////////////////////////////////////////////
 473
 474 class MenuTranslator : public QTranslator
 475 {
 476 public:
 477         MenuTranslator(QObject * parent)
 478                 : QTranslator(parent)
 479         {}
 480
 481         QString translate(const char * /*context*/,
 482           const char * sourceText,
 483           const char * /*comment*/ = 0)
 484         {
 485                 string const s = sourceText;
 486                 if (s == N_("About %1") || s == N_("Preferences")
 487                                 || s == N_("Reconfigure") || s == N_("Quit %1"))
 488                         return qt_(s);
 489                 else
 490                         return QString();
 491         }
 492 };
 493
 494 class GlobalMenuBar : public QMenuBar
 495 {
 496 public:
 497         ///
 498         GlobalMenuBar() : QMenuBar(0) {}
 499
 500         ///
 501         bool event(QEvent * e)
 502         {
 503                 if (e->type() == QEvent::ShortcutOverride) {
 504                         //          && activeWindow() == 0) {
 505                         QKeyEvent * ke = static_cast<QKeyEvent*>(e);
 506                         KeySymbol sym;
 507                         setKeySymbol(&sym, ke);
 508                         guiApp->processKeySym(sym, q_key_state(ke->modifiers()));
 509                         e->accept();
 510                         return true;
 511                 }
 512                 return false;
 513         }
 514 };
 515
 516 #ifdef Q_WS_MACX
 517 // QMacPasteboardMimeGraphics can only be compiled on Mac.
 518
 519 class QMacPasteboardMimeGraphics : public QMacPasteboardMime
 520 {
 521 public:
 522         QMacPasteboardMimeGraphics()
 523                 : QMacPasteboardMime(MIME_QT_CONVERTOR|MIME_ALL)
 524         {}
 525
 526         QString convertorName() { return "Graphics"; }
 527
 528         QString flavorFor(QString const & mime)
 529         {
 530                 LYXERR(Debug::ACTION, "flavorFor " << mime);
 531                 if (mime == pdfMimeType())
 532                         return QLatin1String("com.adobe.pdf");
 533                 return QString();
 534         }
 535
 536         QString mimeFor(QString flav)
 537         {
 538                 LYXERR(Debug::ACTION, "mimeFor " << flav);
 539                 if (flav == QLatin1String("com.adobe.pdf"))
 540                         return pdfMimeType();
 541                 return QString();
 542         }
 543
 544         bool canConvert(QString const & mime, QString flav)
 545         {
 546                 return mimeFor(flav) == mime;
 547         }
 548
 549         QVariant convertToMime(QString const & /*mime*/, QList<QByteArray> data,
 550                 QString /*flav*/)
 551         {
 552                 if(data.count() > 1)
 553                         qWarning("QMacPasteboardMimeGraphics: Cannot handle multiple member data");
 554                 return data.first();
 555         }
 556
 557         QList<QByteArray> convertFromMime(QString const & /*mime*/,
 558                 QVariant data, QString /*flav*/)
 559         {
 560                 QList<QByteArray> ret;
 561                 ret.append(data.toByteArray());
 562                 return ret;
 563         }
 564 };
 565 #endif
 566
 567 ///////////////////////////////////////////////////////////////
 568 //
 569 // You can find more platform specific stuff at the end of this file...
 570 //
 571 ///////////////////////////////////////////////////////////////
 572
 573 ////////////////////////////////////////////////////////////////////////
 574 // Windows specific stuff goes here...
 575
 576 #ifdef Q_WS_WIN
 577 // QWindowsMimeMetafile can only be compiled on Windows.
 578
 579 static FORMATETC cfFromMime(QString const & mimetype)
 580 {
 581         FORMATETC formatetc;
 582         if (mimetype == emfMimeType()) {
 583                 formatetc.cfFormat = CF_ENHMETAFILE;
 584                 formatetc.tymed = TYMED_ENHMF;
 585         } else if (mimetype == wmfMimeType()) {
 586                 formatetc.cfFormat = CF_METAFILEPICT;
 587                 formatetc.tymed = TYMED_MFPICT;
 588         }
 589         formatetc.ptd = 0;
 590         formatetc.dwAspect = DVASPECT_CONTENT;
 591         formatetc.lindex = -1;
 592         return formatetc;
 593 }
 594
 595
 596 class QWindowsMimeMetafile : public QWindowsMime {
 597 public:
 598         QWindowsMimeMetafile() {}
 599
 600         bool canConvertFromMime(FORMATETC const & formatetc,
 601                 QMimeData const * mimedata) const
 602         {
 603                 return false;
 604         }
 605
 606         bool canConvertToMime(QString const & mimetype,
 607                 IDataObject * pDataObj) const
 608         {
 609                 if (mimetype != emfMimeType() && mimetype != wmfMimeType())
 610                         return false;
 611                 FORMATETC formatetc = cfFromMime(mimetype);
 612                 return pDataObj->QueryGetData(&formatetc) == S_OK;
 613         }
 614
 615         bool convertFromMime(FORMATETC const & formatetc,
 616                 const QMimeData * mimedata, STGMEDIUM * pmedium) const
 617         {
 618                 return false;
 619         }
 620
 621         QVariant convertToMime(QString const & mimetype, IDataObject * pDataObj,
 622                 QVariant::Type preferredType) const
 623         {
 624                 QByteArray data;
 625                 if (!canConvertToMime(mimetype, pDataObj))
 626                         return data;
 627
 628                 FORMATETC formatetc = cfFromMime(mimetype);
 629                 STGMEDIUM s;
 630                 if (pDataObj->GetData(&formatetc, &s) != S_OK)
 631                         return data;
 632
 633                 int dataSize;
 634                 if (s.tymed == TYMED_ENHMF) {
 635                         dataSize = GetEnhMetaFileBits(s.hEnhMetaFile, 0, 0);
 636                         data.resize(dataSize);
 637                         dataSize = GetEnhMetaFileBits(s.hEnhMetaFile, dataSize,
 638                                 (LPBYTE)data.data());
 639                 } else if (s.tymed == TYMED_MFPICT) {
 640                         dataSize = GetMetaFileBitsEx((HMETAFILE)s.hMetaFilePict, 0, 0);
 641                         data.resize(dataSize);
 642                         dataSize = GetMetaFileBitsEx((HMETAFILE)s.hMetaFilePict, dataSize,
 643                                 (LPBYTE)data.data());
 644                 }
 645                 data.detach();
 646                 ReleaseStgMedium(&s);
 647
 648                 return data;
 649         }
 650
 651
 652         QVector<FORMATETC> formatsForMime(QString const & mimetype,
 653                 QMimeData const * mimedata) const
 654         {
 655                 QVector<FORMATETC> formats;
 656                 if (mimetype == emfMimeType() || mimetype == wmfMimeType())
 657                         formats += cfFromMime(mimetype);
 658                 return formats;
 659         }
 660
 661         QString mimeForFormat(FORMATETC const & formatetc) const
 662         {
 663                 switch (formatetc.cfFormat) {
 664                 case CF_ENHMETAFILE:
 665                         return emfMimeType();
 666                 case CF_METAFILEPICT:
 667                         return wmfMimeType();
 668                 }
 669                 return QString();
 670         }
 671 };
 672
 673 #endif // Q_WS_WIN
 674
 675 ////////////////////////////////////////////////////////////////////////
 676 // GuiApplication::Private definition and implementation.
 677 ////////////////////////////////////////////////////////////////////////
 678
 679 struct GuiApplication::Private
 680 {
 681         Private(): language_model_(0), meta_fake_bit(NoModifier),
 682                 global_menubar_(0)
 683         {
 684         #ifdef Q_WS_WIN
 685                 /// WMF Mime handler for Windows clipboard.
 686                 wmf_mime_ = new QWindowsMimeMetafile();
 687         #endif
 688                 initKeySequences(&theTopLevelKeymap());
 689         }
 690
 691         void initKeySequences(KeyMap * kb)
 692         {
 693                 keyseq = KeySequence(kb, kb);
 694                 cancel_meta_seq = KeySequence(kb, kb);
 695         }
 696
 697         ///
 698         QSortFilterProxyModel * language_model_;
 699         ///
 700         GuiClipboard clipboard_;
 701         ///
 702         GuiSelection selection_;
 703         ///
 704         FontLoader font_loader_;
 705         ///
 706         ColorCache color_cache_;
 707         ///
 708         QTranslator qt_trans_;
 709         ///
 710         QHash<int, SocketNotifier *> socket_notifiers_;
 711         ///
 712         Menus menus_;
 713         ///
 714         /// The global instance
 715         Toolbars toolbars_;
 716
 717         /// this timer is used for any regular events one wants to
 718         /// perform. at present it is used to check if forked processes
 719         /// are done.
 720         QTimer general_timer_;
 721
 722         /// delayed FuncRequests
 723         std::queue<FuncRequest> func_request_queue_;
 724
 725         ///
 726         KeySequence keyseq;
 727         ///
 728         KeySequence cancel_meta_seq;
 729         ///
 730         KeyModifier meta_fake_bit;
 731
 732         /// Multiple views container.
 733         /**
 734         * Warning: This must not be a smart pointer as the destruction of the
 735         * object is handled by Qt when the view is closed
 736         * \sa Qt::WA_DeleteOnClose attribute.
 737         */
 738         QHash<int, GuiView *> views_;
 739
 740         /// Only used on mac.
 741         GlobalMenuBar * global_menubar_;
 742
 743 #ifdef Q_WS_MACX
 744         /// Linkback mime handler for MacOSX.
 745         QMacPasteboardMimeGraphics mac_pasteboard_mime_;
 746 #endif
 747
 748 #ifdef Q_WS_WIN
 749         /// WMF Mime handler for Windows clipboard.
 750         QWindowsMimeMetafile * wmf_mime_;
 751 #endif
 752 };
 753
 754
 755 GuiApplication * guiApp;
 756
 757 GuiApplication::~GuiApplication()
 758 {
 759 #ifdef Q_WS_MACX
 760         closeAllLinkBackLinks();
 761 #endif
 762         delete d;
 763 }
 764
 765
 766 GuiApplication::GuiApplication(int & argc, char ** argv)
 767         : QApplication(argc, argv), current_view_(0),
 768           d(new GuiApplication::Private)
 769 {
 770         QString app_name = "LyX";
 771         QCoreApplication::setOrganizationName(app_name);
 772         QCoreApplication::setOrganizationDomain("lyx.org");
 773         QCoreApplication::setApplicationName(lyx_package);
 774
 775         // Install translator for GUI elements.
 776         installTranslator(&d->qt_trans_);
 777
 778         // FIXME: quitOnLastWindowClosed is true by default. We should have a
 779         // lyxrc setting for this in order to let the application stay resident.
 780         // But then we need some kind of dock icon, at least on Windows.
 781         /*
 782         if (lyxrc.quit_on_last_window_closed)
 783                 setQuitOnLastWindowClosed(false);
 784         */
 785 #ifdef Q_WS_MACX
 786         // FIXME: Do we need a lyxrc setting for this on Mac? This behaviour
 787         // seems to be the default case for applications like LyX.
 788         setQuitOnLastWindowClosed(false);
 789         // This allows to translate the strings that appear in the LyX menu.
 790         /// A translator suitable for the entries in the LyX menu.
 791         /// Only needed with Qt/Mac.
 792         installTranslator(new MenuTranslator(this));
 793 #endif
 794
 795 #ifdef Q_WS_X11
 796         // doubleClickInterval() is 400 ms on X11 which is just too long.
 797         // On Windows and Mac OS X, the operating system's value is used.
 798         // On Microsoft Windows, calling this function sets the double
 799         // click interval for all applications. So we don't!
 800         QApplication::setDoubleClickInterval(300);
 801 #endif
 802
 803         connect(this, SIGNAL(lastWindowClosed()), this, SLOT(onLastWindowClosed()));
 804
 805         // needs to be done before reading lyxrc
 806         QWidget w;
 807         lyxrc.dpi = (w.logicalDpiX() + w.logicalDpiY()) / 2;
 808
 809         guiApp = this;
 810
 811         // Set the cache to 5120 kilobytes which corresponds to screen size of
 812         // 1280 by 1024 pixels with a color depth of 32 bits.
 813         QPixmapCache::setCacheLimit(5120);
 814
 815         // Initialize RC Fonts
 816         if (lyxrc.roman_font_name.empty())
 817                 lyxrc.roman_font_name = fromqstr(romanFontName());
 818
 819         if (lyxrc.sans_font_name.empty())
 820                 lyxrc.sans_font_name = fromqstr(sansFontName());
 821
 822         if (lyxrc.typewriter_font_name.empty())
 823                 lyxrc.typewriter_font_name = fromqstr(typewriterFontName());
 824
 825         d->general_timer_.setInterval(500);
 826         connect(&d->general_timer_, SIGNAL(timeout()),
 827                 this, SLOT(handleRegularEvents()));
 828         d->general_timer_.start();
 829
 830 #if QT_VERSION >= 0x040400
 831         // maxThreadCount() defaults in general to 2 on single or dual-processor.
 832         // This is clearly not enough in a time where we use threads for
 833         // document preview and/or export. 20 should be OK.
 834         QThreadPool::globalInstance()->setMaxThreadCount(20);
 835 #endif
 836 }
 837
 838
 839 GuiApplication * theGuiApp()
 840 {
 841         return dynamic_cast<GuiApplication *>(theApp());
 842 }
 843
 844
 845 void GuiApplication::clearSession()
 846 {
 847         QSettings settings;
 848         settings.clear();
 849 }
 850
 851
 852 docstring GuiApplication::iconName(FuncRequest const & f, bool unknown)
 853 {
 854         return qstring_to_ucs4(lyx::frontend::iconName(f, unknown));
 855 }
 856
 857
 858 FuncStatus GuiApplication::getStatus(FuncRequest const & cmd) const
 859 {
 860         FuncStatus status;
 861
 862         BufferView * bv = 0;
 863         BufferView * doc_bv = 0;
 864
 865         if (cmd.action() == LFUN_NOACTION) {
 866                 status.message(from_utf8(N_("Nothing to do")));
 867                 status.setEnabled(false);
 868         }
 869
 870         else if (cmd.action() == LFUN_UNKNOWN_ACTION) {
 871                 status.setUnknown(true);
 872                 status.message(from_utf8(N_("Unknown action")));
 873                 status.setEnabled(false);
 874         }
 875
 876         // Does the GuiApplication know something?
 877         else if (getStatus(cmd, status)) { }
 878
 879         // If we do not have a GuiView, then other functions are disabled
 880         else if (!current_view_)
 881                 status.setEnabled(false);
 882
 883         // Does the GuiView know something?
 884         else if (current_view_->getStatus(cmd, status)) { }
 885
 886         // In LyX/Mac, when a dialog is open, the menus of the
 887         // application can still be accessed without giving focus to
 888         // the main window. In this case, we want to disable the menu
 889         // entries that are buffer or view-related.
 890         //FIXME: Abdel (09/02/10) This has very bad effect on Linux, don't know why...
 891         /*
 892         else if (cmd.origin() == FuncRequest::MENU && !current_view_->hasFocus())
 893                 status.setEnabled(false);
 894         */
 895
 896         // If we do not have a BufferView, then other functions are disabled
 897         else if (!(bv = current_view_->currentBufferView()))
 898                 status.setEnabled(false);
 899
 900         // Does the current BufferView know something?
 901         else if (bv->getStatus(cmd, status)) { }
 902
 903         // Does the current Buffer know something?
 904         else if (bv->buffer().getStatus(cmd, status)) { }
 905
 906         // If we do not have a document BufferView, different from the
 907         // current BufferView, then other functions are disabled
 908         else if (!(doc_bv = current_view_->documentBufferView()) || doc_bv == bv)
 909                 status.setEnabled(false);
 910
 911         // Does the document Buffer know something?
 912         else if (doc_bv->buffer().getStatus(cmd, status)) { }
 913
 914         else {
 915                 LYXERR(Debug::ACTION, "LFUN not handled in getStatus(): " << cmd);
 916                 status.message(from_utf8(N_("Command not handled")));
 917                 status.setEnabled(false);
 918         }
 919
 920         // the default error message if we disable the command
 921         if (!status.enabled() && status.message().empty())
 922                 status.message(from_utf8(N_("Command disabled")));
 923
 924         return status;
 925 }
 926
 927
 928 bool GuiApplication::getStatus(FuncRequest const & cmd, FuncStatus & flag) const
 929 {
 930         // I would really like to avoid having this switch and rather try to
 931         // encode this in the function itself.
 932         // -- And I'd rather let an inset decide which LFUNs it is willing
 933         // to handle (Andre')
 934         bool enable = true;
 935         switch (cmd.action()) {
 936
 937         // This could be used for the no-GUI version. The GUI version is handled in
 938         // GuiView::getStatus(). See above.
 939         /*
 940         case LFUN_BUFFER_WRITE:
 941         case LFUN_BUFFER_WRITE_AS: {
 942                 Buffer * b = theBufferList().getBuffer(FileName(cmd.getArg(0)));
 943                 enable = b && (b->isUnnamed() || !b->isClean());
 944                 break;
 945         }
 946         */
 947
 948         case LFUN_BOOKMARK_GOTO: {
 949                 const unsigned int num = convert<unsigned int>(to_utf8(cmd.argument()));
 950                 enable = theSession().bookmarks().isValid(num);
 951                 break;
 952         }
 953
 954         case LFUN_BOOKMARK_CLEAR:
 955                 enable = theSession().bookmarks().hasValid();
 956                 break;
 957
 958         // this one is difficult to get right. As a half-baked
 959         // solution, we consider only the first action of the sequence
 960         case LFUN_COMMAND_SEQUENCE: {
 961                 // argument contains ';'-terminated commands
 962                 string const firstcmd = token(to_utf8(cmd.argument()), ';', 0);
 963                 FuncRequest func(lyxaction.lookupFunc(firstcmd));
 964                 func.setOrigin(cmd.origin());
 965                 flag = getStatus(func);
 966                 break;
 967         }
 968
 969         // we want to check if at least one of these is enabled
 970         case LFUN_COMMAND_ALTERNATIVES: {
 971                 // argument contains ';'-terminated commands
 972                 string arg = to_utf8(cmd.argument());
 973                 while (!arg.empty()) {
 974                         string first;
 975                         arg = split(arg, first, ';');
 976                         FuncRequest func(lyxaction.lookupFunc(first));
 977                         func.setOrigin(cmd.origin());
 978                         flag = getStatus(func);
 979                         // if this one is enabled, the whole thing is
 980                         if (flag.enabled())
 981                                 break;
 982                 }
 983                 break;
 984         }
 985
 986         case LFUN_CALL: {
 987                 FuncRequest func;
 988                 string name = to_utf8(cmd.argument());
 989                 if (theTopLevelCmdDef().lock(name, func)) {
 990                         func.setOrigin(cmd.origin());
 991                         flag = getStatus(func);
 992                         theTopLevelCmdDef().release(name);
 993                 } else {
 994                         // catch recursion or unknown command
 995                         // definition. all operations until the
 996                         // recursion or unknown command definition
 997                         // occurs are performed, so set the state to
 998                         // enabled
 999                         enable = true;
1000                 }
1001                 break;
1002         }
1003
1004         case LFUN_CURSOR_FOLLOWS_SCROLLBAR_TOGGLE:
1005         case LFUN_REPEAT:
1006         case LFUN_PREFERENCES_SAVE:
1007         case LFUN_BUFFER_SAVE_AS_DEFAULT:
1008         case LFUN_DEBUG_LEVEL_SET:
1009                 // these are handled in our dispatch()
1010                 break;
1011
1012         case LFUN_WINDOW_CLOSE:
1013                 enable = d->views_.size() > 0;
1014                 break;
1015
1016         case LFUN_BUFFER_NEW:
1017         case LFUN_BUFFER_NEW_TEMPLATE:
1018         case LFUN_FILE_OPEN:
1019         case LFUN_HELP_OPEN:
1020         case LFUN_SCREEN_FONT_UPDATE:
1021         case LFUN_SET_COLOR:
1022         case LFUN_WINDOW_NEW:
1023         case LFUN_LYX_QUIT:
1024         case LFUN_LYXRC_APPLY:
1025         case LFUN_COMMAND_PREFIX:
1026         case LFUN_CANCEL:
1027         case LFUN_META_PREFIX:
1028         case LFUN_RECONFIGURE:
1029         case LFUN_SERVER_GET_FILENAME:
1030         case LFUN_SERVER_NOTIFY:
1031                 enable = true;
1032                 break;
1033
1034         default:
1035                 return false;
1036         }
1037
1038         if (!enable)
1039                 flag.setEnabled(false);
1040         return true;
1041 }
1042
1043 /// make a post-dispatch status message
1044 static docstring makeDispatchMessage(docstring const & msg,
1045                                      FuncRequest const & cmd)
1046 {
1047         const bool verbose = (cmd.origin() == FuncRequest::MENU
1048                               || cmd.origin() == FuncRequest::TOOLBAR
1049                               || cmd.origin() == FuncRequest::COMMANDBUFFER);
1050
1051         if (cmd.action() == LFUN_SELF_INSERT || !verbose) {
1052                 LYXERR(Debug::ACTION, "dispatch msg is " << msg);
1053                 return msg;
1054         }
1055
1056         docstring dispatch_msg = msg;
1057         if (!dispatch_msg.empty())
1058                 dispatch_msg += ' ';
1059
1060         docstring comname = from_utf8(lyxaction.getActionName(cmd.action()));
1061
1062         bool argsadded = false;
1063
1064         if (!cmd.argument().empty()) {
1065                 if (cmd.action() != LFUN_UNKNOWN_ACTION) {
1066                         comname += ' ' + cmd.argument();
1067                         argsadded = true;
1068                 }
1069         }
1070         docstring const shortcuts = theTopLevelKeymap().
1071                 printBindings(cmd, KeySequence::ForGui);
1072
1073         if (!shortcuts.empty())
1074                 comname += ": " + shortcuts;
1075         else if (!argsadded && !cmd.argument().empty())
1076                 comname += ' ' + cmd.argument();
1077
1078         if (!comname.empty()) {
1079                 comname = rtrim(comname);
1080                 dispatch_msg += '(' + rtrim(comname) + ')';
1081         }
1082         LYXERR(Debug::ACTION, "verbose dispatch msg " << to_utf8(dispatch_msg));
1083         return dispatch_msg;
1084 }
1085
1086
1087 void GuiApplication::dispatch(FuncRequest const & cmd)
1088 {
1089         if (current_view_ && current_view_->currentBufferView())
1090                 current_view_->currentBufferView()->cursor().saveBeforeDispatchPosXY();
1091
1092         DispatchResult dr;
1093         // redraw the screen at the end (first of the two drawing steps).
1094         // This is done unless explicitly requested otherwise
1095         dr.screenUpdate(Update::FitCursor);
1096         dispatch(cmd, dr);
1097
1098         if (!current_view_)
1099                 return;
1100
1101         BufferView * bv = current_view_->currentBufferView();
1102         if (bv) {
1103                 if (dr.needBufferUpdate()) {
1104                         bv->cursor().clearBufferUpdate();
1105                         bv->buffer().updateBuffer();
1106                 }
1107                 // BufferView::update() updates the ViewMetricsInfo and
1108                 // also initializes the position cache for all insets in
1109                 // (at least partially) visible top-level paragraphs.
1110                 // We will redraw the screen only if needed.
1111                 bv->processUpdateFlags(dr.screenUpdate());
1112
1113                 // Do we have a selection?
1114                 theSelection().haveSelection(bv->cursor().selection());
1115
1116                 // update gui
1117                 current_view_->restartCursor();
1118         }
1119         if (dr.needMessageUpdate()) {
1120                 // Some messages may already be translated, so we cannot use _()
1121                 current_view_->message(makeDispatchMessage(
1122                                 translateIfPossible(dr.message()), cmd));
1123         }
1124 }
1125
1126
1127 void GuiApplication::gotoBookmark(unsigned int idx, bool openFile,
1128         bool switchToBuffer)
1129 {
1130         if (!theSession().bookmarks().isValid(idx))
1131                 return;
1132         BookmarksSection::Bookmark const & bm =
1133                 theSession().bookmarks().bookmark(idx);
1134         LASSERT(!bm.filename.empty(), /**/);
1135         string const file = bm.filename.absFileName();
1136         // if the file is not opened, open it.
1137         if (!theBufferList().exists(bm.filename)) {
1138                 if (openFile)
1139                         dispatch(FuncRequest(LFUN_FILE_OPEN, file));
1140                 else
1141                         return;
1142         }
1143         // open may fail, so we need to test it again
1144         if (!theBufferList().exists(bm.filename))
1145                 return;
1146
1147         // bm can be changed when saving
1148         BookmarksSection::Bookmark tmp = bm;
1149
1150         // Special case idx == 0 used for back-from-back jump navigation
1151         if (idx == 0)
1152                 dispatch(FuncRequest(LFUN_BOOKMARK_SAVE, "0"));
1153
1154         // if the current buffer is not that one, switch to it.
1155         BufferView * doc_bv = current_view_->documentBufferView();
1156         if (!doc_bv || doc_bv->buffer().fileName() != tmp.filename) {
1157                 if (switchToBuffer) {
1158                         dispatch(FuncRequest(LFUN_BUFFER_SWITCH, file));
1159                         doc_bv = current_view_->documentBufferView();
1160                 } else
1161                         return;
1162         }
1163
1164         // moveToPosition try paragraph id first and then paragraph (pit, pos).
1165         if (!doc_bv->moveToPosition(
1166                         tmp.bottom_pit, tmp.bottom_pos, tmp.top_id, tmp.top_pos))
1167                 return;
1168
1169         // bm changed
1170         if (idx == 0)
1171                 return;
1172
1173         // Cursor jump succeeded!
1174         Cursor const & cur = doc_bv->cursor();
1175         pit_type new_pit = cur.pit();
1176         pos_type new_pos = cur.pos();
1177         int new_id = cur.paragraph().id();
1178
1179         // if bottom_pit, bottom_pos or top_id has been changed, update bookmark
1180         // see http://www.lyx.org/trac/ticket/3092
1181         if (bm.bottom_pit != new_pit || bm.bottom_pos != new_pos
1182                 || bm.top_id != new_id) {
1183                 const_cast<BookmarksSection::Bookmark &>(bm).updatePos(
1184                         new_pit, new_pos, new_id);
1185         }
1186 }
1187
1188 // This function runs "configure" and then rereads lyx.defaults to
1189 // reconfigure the automatic settings.
1190 void GuiApplication::reconfigure(string const & option)
1191 {
1192         // emit message signal.
1193         if (current_view_)
1194                 current_view_->message(_("Running configure..."));
1195
1196         // Run configure in user lyx directory
1197         PathChanger p(package().user_support());
1198         string configure_command = package().configure_command();
1199         configure_command += option;
1200         Systemcall one;
1201         int ret = one.startscript(Systemcall::Wait, configure_command);
1202         p.pop();
1203         // emit message signal.
1204         if (current_view_)
1205                 current_view_->message(_("Reloading configuration..."));
1206         lyxrc.read(libFileSearch(QString(), "lyxrc.defaults"));
1207         // Re-read packages.lst
1208         LaTeXFeatures::getAvailable();
1209
1210         if (ret)
1211                 Alert::information(_("System reconfiguration failed"),
1212                            _("The system reconfiguration has failed.\n"
1213                                   "Default textclass is used but LyX may "
1214                                   "not be able to work properly.\n"
1215                                   "Please reconfigure again if needed."));
1216         else
1217                 Alert::information(_("System reconfigured"),
1218                            _("The system has been reconfigured.\n"
1219                              "You need to restart LyX to make use of any\n"
1220                              "updated document class specifications."));
1221 }
1222
1223
1224 void GuiApplication::dispatch(FuncRequest const & cmd, DispatchResult & dr)
1225 {
1226         string const argument = to_utf8(cmd.argument());
1227         FuncCode const action = cmd.action();
1228
1229         LYXERR(Debug::ACTION, "cmd: " << cmd);
1230
1231         // we have not done anything wrong yet.
1232         dr.setError(false);
1233
1234         FuncStatus const flag = getStatus(cmd);
1235         if (!flag.enabled()) {
1236                 // We cannot use this function here
1237                 LYXERR(Debug::ACTION, "action "
1238                        << lyxaction.getActionName(action)
1239                        << " [" << action << "] is disabled at this location");
1240                 if (current_view_)
1241                         current_view_->restartCursor();
1242                 dr.setMessage(flag.message());
1243                 dr.setError(true);
1244                 dr.dispatched(false);
1245                 dr.screenUpdate(Update::None);
1246                 dr.clearBufferUpdate();
1247                 return;
1248         };
1249
1250         // Assumes that the action will be dispatched.
1251         dr.dispatched(true);
1252
1253         switch (cmd.action()) {
1254
1255         case LFUN_WINDOW_NEW:
1256                 createView(toqstr(cmd.argument()));
1257                 break;
1258
1259         case LFUN_WINDOW_CLOSE:
1260                 // update bookmark pit of the current buffer before window close
1261                 for (size_t i = 0; i < theSession().bookmarks().size(); ++i)
1262                         gotoBookmark(i+1, false, false);
1263                 // clear the last opened list, because
1264                 // maybe this will end the session
1265                 theSession().lastOpened().clear();
1266                 current_view_->closeScheduled();
1267                 break;
1268
1269         case LFUN_LYX_QUIT:
1270                 // quitting is triggered by the gui code
1271                 // (leaving the event loop).
1272                 if (current_view_)
1273                         current_view_->message(from_utf8(N_("Exiting.")));
1274                 if (closeAllViews())
1275                         quit();
1276                 break;
1277
1278         case LFUN_SCREEN_FONT_UPDATE: {
1279                 // handle the screen font changes.
1280                 d->font_loader_.update();
1281                 // Backup current_view_
1282                 GuiView * view = current_view_;
1283                 // Set current_view_ to zero to forbid GuiWorkArea::redraw()
1284                 // to skip the refresh.
1285                 current_view_ = 0;
1286                 theBufferList().changed(false);
1287                 // Restore current_view_
1288                 current_view_ = view;
1289                 break;
1290         }
1291
1292         case LFUN_BUFFER_NEW:
1293                 if (d->views_.empty()
1294                    || (!lyxrc.open_buffers_in_tabs && current_view_->documentBufferView() != 0)) {
1295                         createView(QString(), false); // keep hidden
1296                         current_view_->newDocument(to_utf8(cmd.argument()), false);
1297                         current_view_->show();
1298                         setActiveWindow(current_view_);
1299                 } else {
1300                         current_view_->newDocument(to_utf8(cmd.argument()), false);
1301                 }
1302                 break;
1303
1304         case LFUN_BUFFER_NEW_TEMPLATE:
1305                 if (d->views_.empty()
1306                    || (!lyxrc.open_buffers_in_tabs && current_view_->documentBufferView() != 0)) {
1307                         createView();
1308                         current_view_->newDocument(to_utf8(cmd.argument()), true);
1309                         if (!current_view_->documentBufferView())
1310                                 current_view_->close();
1311                 } else {
1312                         current_view_->newDocument(to_utf8(cmd.argument()), true);
1313                 }
1314                 break;
1315
1316         case LFUN_FILE_OPEN: {
1317                 // FIXME: create a new method shared with LFUN_HELP_OPEN.
1318                 string const fname = to_utf8(cmd.argument());
1319                 if (d->views_.empty() || (!lyxrc.open_buffers_in_tabs
1320                           && current_view_->documentBufferView() != 0)) {
1321                         // We want the ui session to be saved per document and not per
1322                         // window number. The filename crc is a good enough identifier.
1323                         boost::crc_32_type crc;
1324                         crc = for_each(fname.begin(), fname.end(), crc);
1325                         createView(crc.checksum());
1326                         current_view_->openDocument(fname);
1327                         if (current_view_ && !current_view_->documentBufferView())
1328                                 current_view_->close();
1329                 } else
1330                         current_view_->openDocument(fname);
1331                 break;
1332         }
1333
1334         case LFUN_HELP_OPEN: {
1335                 // FIXME: create a new method shared with LFUN_FILE_OPEN.
1336                 if (current_view_ == 0)
1337                         createView();
1338                 string const arg = to_utf8(cmd.argument());
1339                 if (arg.empty()) {
1340                         current_view_->message(_("Missing argument"));
1341                         break;
1342                 }
1343                 FileName fname = i18nLibFileSearch("doc", arg, "lyx");
1344                 if (fname.empty())
1345                         fname = i18nLibFileSearch("examples", arg, "lyx");
1346
1347                 if (fname.empty()) {
1348                         lyxerr << "LyX: unable to find documentation file `"
1349                                << arg << "'. Bad installation?" << endl;
1350                         break;
1351                 }
1352                 current_view_->message(bformat(_("Opening help file %1$s..."),
1353                                                makeDisplayPath(fname.absFileName())));
1354                 Buffer * buf = current_view_->loadDocument(fname, false);
1355                 if (buf) {
1356                         current_view_->setBuffer(buf);
1357 #ifndef DEVEL_VERSION
1358                         buf->setReadonly(true);
1359 #endif
1360                         buf->errors("Parse");
1361                 }
1362                 break;
1363         }
1364
1365         case LFUN_SET_COLOR: {
1366                 string lyx_name;
1367                 string const x11_name = split(to_utf8(cmd.argument()), lyx_name, ' ');
1368                 if (lyx_name.empty() || x11_name.empty()) {
1369                         if (current_view_)
1370                                 current_view_->message(
1371                                         _("Syntax: set-color <lyx_name> <x11_name>"));
1372                         break;
1373                 }
1374
1375                 string const graphicsbg = lcolor.getLyXName(Color_graphicsbg);
1376                 bool const graphicsbg_changed =
1377                                 lyx_name == graphicsbg && x11_name != graphicsbg;
1378                 if (graphicsbg_changed) {
1379                         // FIXME: The graphics cache no longer has a changeDisplay method.
1380 #if 0
1381                         graphics::GCache::get().changeDisplay(true);
1382 #endif
1383                 }
1384
1385                 if (!lcolor.setColor(lyx_name, x11_name)) {
1386                         current_view_->message(
1387                                 bformat(_("Set-color \"%1$s\" failed "
1388                                         "- color is undefined or "
1389                                         "may not be redefined"),
1390                                         from_utf8(lyx_name)));
1391                         break;
1392                 }
1393                 // Make sure we don't keep old colors in cache.
1394                 d->color_cache_.clear();
1395                 break;
1396         }
1397
1398         case LFUN_LYXRC_APPLY: {
1399                 // reset active key sequences, since the bindings
1400                 // are updated (bug 6064)
1401                 d->keyseq.reset();
1402                 LyXRC const lyxrc_orig = lyxrc;
1403
1404                 istringstream ss(to_utf8(cmd.argument()));
1405                 bool const success = lyxrc.read(ss) == 0;
1406
1407                 if (!success) {
1408                         lyxerr << "Warning in LFUN_LYXRC_APPLY!\n"
1409                                         << "Unable to read lyxrc data"
1410                                         << endl;
1411                         break;
1412                 }
1413
1414                 actOnUpdatedPrefs(lyxrc_orig, lyxrc);
1415                 setSpellChecker();
1416                 resetGui();
1417
1418                 break;
1419         }
1420
1421         case LFUN_COMMAND_PREFIX:
1422                 dispatch(FuncRequest(LFUN_MESSAGE, d->keyseq.printOptions(true)));
1423                 break;
1424
1425         case LFUN_CANCEL: {
1426                 d->keyseq.reset();
1427                 d->meta_fake_bit = NoModifier;
1428                 GuiView * gv = currentView();
1429                 if (gv && gv->currentBufferView())
1430                         // cancel any selection
1431                         processFuncRequest(FuncRequest(LFUN_MARK_OFF));
1432                 dr.setMessage(from_ascii(N_("Cancel")));
1433                 break;
1434         }
1435         case LFUN_META_PREFIX:
1436                 d->meta_fake_bit = AltModifier;
1437                 dr.setMessage(d->keyseq.print(KeySequence::ForGui));
1438                 break;
1439
1440         // --- Menus -----------------------------------------------
1441         case LFUN_RECONFIGURE:
1442                 // argument is any additional parameter to the configure.py command
1443                 reconfigure(to_utf8(cmd.argument()));
1444                 break;
1445
1446         // --- lyxserver commands ----------------------------
1447         case LFUN_SERVER_GET_FILENAME: {
1448                 LASSERT(current_view_ && current_view_->documentBufferView(), return);
1449                 docstring const fname = from_utf8(
1450                                 current_view_->documentBufferView()->buffer().absFileName());
1451                 dr.setMessage(fname);
1452                 LYXERR(Debug::INFO, "FNAME[" << fname << ']');
1453                 break;
1454         }
1455         case LFUN_SERVER_NOTIFY: {
1456                 docstring const dispatch_buffer = d->keyseq.print(KeySequence::Portable);
1457                 dr.setMessage(dispatch_buffer);
1458                 theServer().notifyClient(to_utf8(dispatch_buffer));
1459                 break;
1460         }
1461
1462         case LFUN_CURSOR_FOLLOWS_SCROLLBAR_TOGGLE:
1463                 lyxrc.cursor_follows_scrollbar = !lyxrc.cursor_follows_scrollbar;
1464                 break;
1465
1466         case LFUN_REPEAT: {
1467                 // repeat command
1468                 string countstr;
1469                 string rest = split(argument, countstr, ' ');
1470                 istringstream is(countstr);
1471                 int count = 0;
1472                 is >> count;
1473                 //lyxerr << "repeat: count: " << count << " cmd: " << rest << endl;
1474                 for (int i = 0; i < count; ++i)
1475                         dispatch(lyxaction.lookupFunc(rest));
1476                 break;
1477         }
1478
1479         case LFUN_COMMAND_SEQUENCE: {
1480                 // argument contains ';'-terminated commands
1481                 string arg = argument;
1482                 // FIXME: this LFUN should also work without any view.
1483                 Buffer * buffer = (current_view_ && current_view_->documentBufferView())
1484                                   ? &(current_view_->documentBufferView()->buffer()) : 0;
1485                 if (buffer)
1486                         buffer->undo().beginUndoGroup();
1487                 while (!arg.empty()) {
1488                         string first;
1489                         arg = split(arg, first, ';');
1490                         FuncRequest func(lyxaction.lookupFunc(first));
1491                         func.setOrigin(cmd.origin());
1492                         dispatch(func);
1493                 }
1494                 // the buffer may have been closed by one action
1495                 if (theBufferList().isLoaded(buffer))
1496                         buffer->undo().endUndoGroup();
1497                 break;
1498         }
1499
1500         case LFUN_COMMAND_ALTERNATIVES: {
1501                 // argument contains ';'-terminated commands
1502                 string arg = argument;
1503                 while (!arg.empty()) {
1504                         string first;
1505                         arg = split(arg, first, ';');
1506                         FuncRequest func(lyxaction.lookupFunc(first));
1507                         func.setOrigin(cmd.origin());
1508                         FuncStatus const stat = getStatus(func);
1509                         if (stat.enabled()) {
1510                                 dispatch(func);
1511                                 break;
1512                         }
1513                 }
1514                 break;
1515         }
1516
1517         case LFUN_CALL: {
1518                 FuncRequest func;
1519                 if (theTopLevelCmdDef().lock(argument, func)) {
1520                         func.setOrigin(cmd.origin());
1521                         dispatch(func);
1522                         theTopLevelCmdDef().release(argument);
1523                 } else {
1524                         if (func.action() == LFUN_UNKNOWN_ACTION) {
1525                                 // unknown command definition
1526                                 lyxerr << "Warning: unknown command definition `"
1527                                                 << argument << "'"
1528                                                 << endl;
1529                         } else {
1530                                 // recursion detected
1531                                 lyxerr << "Warning: Recursion in the command definition `"
1532                                                 << argument << "' detected"
1533                                                 << endl;
1534                         }
1535                 }
1536                 break;
1537         }
1538
1539         case LFUN_PREFERENCES_SAVE:
1540                 lyxrc.write(support::makeAbsPath("preferences",
1541                         package().user_support().absFileName()), false);
1542                 break;
1543
1544         case LFUN_BUFFER_SAVE_AS_DEFAULT: {
1545                 string const fname = addName(addPath(package().user_support().absFileName(),
1546                         "templates/"), "defaults.lyx");
1547                 Buffer defaults(fname);
1548
1549                 istringstream ss(argument);
1550                 Lexer lex;
1551                 lex.setStream(ss);
1552                 int const unknown_tokens = defaults.readHeader(lex);
1553
1554                 if (unknown_tokens != 0) {
1555                         lyxerr << "Warning in LFUN_BUFFER_SAVE_AS_DEFAULT!\n"
1556                                << unknown_tokens << " unknown token"
1557                                << (unknown_tokens == 1 ? "" : "s")
1558                                << endl;
1559                 }
1560
1561                 if (defaults.writeFile(FileName(defaults.absFileName())))
1562                         dr.setMessage(bformat(_("Document defaults saved in %1$s"),
1563                                               makeDisplayPath(fname)));
1564                 else {
1565                         dr.setError(true);
1566                         dr.setMessage(from_ascii(N_("Unable to save document defaults")));
1567                 }
1568                 break;
1569         }
1570
1571         case LFUN_BOOKMARK_GOTO:
1572                 // go to bookmark, open unopened file and switch to buffer if necessary
1573                 gotoBookmark(convert<unsigned int>(to_utf8(cmd.argument())), true, true);
1574                 dr.screenUpdate(Update::Force | Update::FitCursor);
1575                 break;
1576
1577         case LFUN_BOOKMARK_CLEAR:
1578                 theSession().bookmarks().clear();
1579                 break;
1580
1581         case LFUN_DEBUG_LEVEL_SET:
1582                 lyxerr.setLevel(Debug::value(to_utf8(cmd.argument())));
1583                 break;
1584
1585         default:
1586                 // Everything below is only for active window
1587                 if (current_view_ == 0)
1588                         break;
1589
1590                 // Let the current GuiView dispatch its own actions.
1591                 current_view_->dispatch(cmd, dr);
1592
1593                 if (dr.dispatched())
1594                         break;
1595
1596                 BufferView * bv = current_view_->currentBufferView();
1597                 LASSERT(bv, /**/);
1598
1599                 // Let the current BufferView dispatch its own actions.
1600                 bv->dispatch(cmd, dr);
1601                 if (dr.dispatched())
1602                         break;
1603
1604                 BufferView * doc_bv = current_view_->documentBufferView();
1605                 // Try with the document BufferView dispatch if any.
1606                 if (doc_bv) {
1607                         doc_bv->dispatch(cmd, dr);
1608                         if (dr.dispatched())
1609                                 break;
1610                 }
1611
1612                 // OK, so try the current Buffer itself...
1613                 bv->buffer().dispatch(cmd, dr);
1614                 if (dr.dispatched())
1615                         break;
1616
1617                 // and with the document Buffer.
1618                 if (doc_bv) {
1619                         doc_bv->buffer().dispatch(cmd, dr);
1620                         if (dr.dispatched())
1621                                 break;
1622                 }
1623
1624                 // Let the current Cursor dispatch its own actions.
1625                 Cursor old = bv->cursor();
1626                 bv->cursor().dispatch(cmd);
1627
1628                 // notify insets we just left
1629                 if (bv->cursor() != old) {
1630                         old.fixIfBroken();
1631                         bool badcursor = notifyCursorLeavesOrEnters(old, bv->cursor());
1632                         if (badcursor)
1633                                 bv->cursor().fixIfBroken();
1634                 }
1635
1636                 // update completion. We do it here and not in
1637                 // processKeySym to avoid another redraw just for a
1638                 // changed inline completion
1639                 if (cmd.origin() == FuncRequest::KEYBOARD) {
1640                         if (cmd.action() == LFUN_SELF_INSERT
1641                                         || (cmd.action() == LFUN_ERT_INSERT && bv->cursor().inMathed()))
1642                                 current_view_->updateCompletion(bv->cursor(), true, true);
1643                         else if (cmd.action() == LFUN_CHAR_DELETE_BACKWARD)
1644                                 current_view_->updateCompletion(bv->cursor(), false, true);
1645                         else
1646                                 current_view_->updateCompletion(bv->cursor(), false, false);
1647                 }
1648
1649                 dr = bv->cursor().result();
1650         }
1651
1652         // if we executed a mutating lfun, mark the buffer as dirty
1653         Buffer * doc_buffer = (current_view_ && current_view_->documentBufferView())
1654                       ? &(current_view_->documentBufferView()->buffer()) : 0;
1655         if (doc_buffer && theBufferList().isLoaded(doc_buffer)
1656                 && flag.enabled()
1657                 && !lyxaction.funcHasFlag(action, LyXAction::NoBuffer)
1658                 && !lyxaction.funcHasFlag(action, LyXAction::ReadOnly))
1659                 current_view_->currentBufferView()->buffer().markDirty();
1660 }
1661
1662
1663 docstring GuiApplication::viewStatusMessage()
1664 {
1665         // When meta-fake key is pressed, show the key sequence so far + "M-".
1666         if (d->meta_fake_bit != NoModifier)
1667                 return d->keyseq.print(KeySequence::ForGui) + "M-";
1668
1669         // Else, when a non-complete key sequence is pressed,
1670         // show the available options.
1671         if (d->keyseq.length() > 0 && !d->keyseq.deleted())
1672                 return d->keyseq.printOptions(true);
1673
1674         return docstring();
1675 }
1676
1677
1678 void GuiApplication::handleKeyFunc(FuncCode action)
1679 {
1680         char_type c = 0;
1681
1682         if (d->keyseq.length())
1683                 c = 0;
1684         GuiView * gv = currentView();
1685         LASSERT(gv && gv->currentBufferView(), return);
1686         BufferView * bv = gv->currentBufferView();
1687         bv->getIntl().getTransManager().deadkey(
1688                 c, get_accent(action).accent, bv->cursor().innerText(),
1689                 bv->cursor());
1690         // Need to clear, in case the minibuffer calls these
1691         // actions
1692         d->keyseq.clear();
1693         // copied verbatim from do_accent_char
1694         bv->cursor().resetAnchor();
1695 }
1696
1697
1698 void GuiApplication::processKeySym(KeySymbol const & keysym, KeyModifier state)
1699 {
1700         LYXERR(Debug::KEY, "KeySym is " << keysym.getSymbolName());
1701
1702         // Do nothing if we have nothing (JMarc)
1703         if (!keysym.isOK()) {
1704                 LYXERR(Debug::KEY, "Empty kbd action (probably composing)");
1705                 if (current_view_)
1706                         current_view_->restartCursor();
1707                 return;
1708         }
1709
1710         if (keysym.isModifier()) {
1711                 LYXERR(Debug::KEY, "isModifier true");
1712                 if (current_view_)
1713                         current_view_->restartCursor();
1714                 return;
1715         }
1716
1717         char_type encoded_last_key = keysym.getUCSEncoded();
1718
1719         // Do a one-deep top-level lookup for
1720         // cancel and meta-fake keys. RVDK_PATCH_5
1721         d->cancel_meta_seq.reset();
1722
1723         FuncRequest func = d->cancel_meta_seq.addkey(keysym, state);
1724         LYXERR(Debug::KEY, "action first set to [" << func.action() << ']');
1725
1726         // When not cancel or meta-fake, do the normal lookup.
1727         // Note how the meta_fake Mod1 bit is OR-ed in and reset afterwards.
1728         // Mostly, meta_fake_bit = NoModifier. RVDK_PATCH_5.
1729         if ((func.action() != LFUN_CANCEL) && (func.action() != LFUN_META_PREFIX)) {
1730                 // remove Caps Lock and Mod2 as a modifiers
1731                 func = d->keyseq.addkey(keysym, (state | d->meta_fake_bit));
1732                 LYXERR(Debug::KEY, "action now set to [" << func.action() << ']');
1733         }
1734
1735         // Dont remove this unless you know what you are doing.
1736         d->meta_fake_bit = NoModifier;
1737
1738         // Can this happen now ?
1739         if (func.action() == LFUN_NOACTION)
1740                 func = FuncRequest(LFUN_COMMAND_PREFIX);
1741
1742         LYXERR(Debug::KEY, " Key [action=" << func.action() << "]["
1743                 << d->keyseq.print(KeySequence::Portable) << ']');
1744
1745         // already here we know if it any point in going further
1746         // why not return already here if action == -1 and
1747         // num_bytes == 0? (Lgb)
1748
1749         if (d->keyseq.length() > 1 && current_view_)
1750                 current_view_->message(d->keyseq.print(KeySequence::ForGui));
1751
1752
1753         // Maybe user can only reach the key via holding down shift.
1754         // Let's see. But only if shift is the only modifier
1755         if (func.action() == LFUN_UNKNOWN_ACTION && state == ShiftModifier) {
1756                 LYXERR(Debug::KEY, "Trying without shift");
1757                 func = d->keyseq.addkey(keysym, NoModifier);
1758                 LYXERR(Debug::KEY, "Action now " << func.action());
1759         }
1760
1761         if (func.action() == LFUN_UNKNOWN_ACTION) {
1762                 // Hmm, we didn't match any of the keysequences. See
1763                 // if it's normal insertable text not already covered
1764                 // by a binding
1765                 if (keysym.isText() && d->keyseq.length() == 1) {
1766                         LYXERR(Debug::KEY, "isText() is true, inserting.");
1767                         func = FuncRequest(LFUN_SELF_INSERT,
1768                                            FuncRequest::KEYBOARD);
1769                 } else {
1770                         LYXERR(Debug::KEY, "Unknown, !isText() - giving up");
1771                         if (current_view_) {
1772                                 current_view_->message(_("Unknown function."));
1773                                 current_view_->restartCursor();
1774                         }
1775                         return;
1776                 }
1777         }
1778
1779         if (func.action() == LFUN_SELF_INSERT) {
1780                 if (encoded_last_key != 0) {
1781                         docstring const arg(1, encoded_last_key);
1782                         processFuncRequest(FuncRequest(LFUN_SELF_INSERT, arg,
1783                                              FuncRequest::KEYBOARD));
1784                         LYXERR(Debug::KEY, "SelfInsert arg[`" << to_utf8(arg) << "']");
1785                 }
1786         } else
1787                 processFuncRequest(func);
1788 }
1789
1790
1791 void GuiApplication::processFuncRequest(FuncRequest const & func)
1792 {
1793         lyx::dispatch(func);
1794 }
1795
1796
1797 void GuiApplication::processFuncRequestAsync(FuncRequest const & func)
1798 {
1799         addToFuncRequestQueue(func);
1800         processFuncRequestQueueAsync();
1801 }
1802
1803
1804 void GuiApplication::processFuncRequestQueue()
1805 {
1806         while (!d->func_request_queue_.empty()) {
1807                 processFuncRequest(d->func_request_queue_.front());
1808                 d->func_request_queue_.pop();
1809         }
1810 }
1811
1812
1813 void GuiApplication::processFuncRequestQueueAsync()
1814 {
1815         QTimer::singleShot(0, this, SLOT(slotProcessFuncRequestQueue()));
1816 }
1817
1818
1819 void GuiApplication::addToFuncRequestQueue(FuncRequest const & func)
1820 {
1821         d->func_request_queue_.push(func);
1822 }
1823
1824
1825 void GuiApplication::resetGui()
1826 {
1827         // Set the language defined by the user.
1828         setGuiLanguage();
1829
1830         // Read menus
1831         if (!readUIFile(toqstr(lyxrc.ui_file)))
1832                 // Gives some error box here.
1833                 return;
1834
1835         if (d->global_menubar_)
1836                 d->menus_.fillMenuBar(d->global_menubar_, 0, false);
1837
1838         QHash<int, GuiView *>::iterator it;
1839         for (it = d->views_.begin(); it != d->views_.end(); ++it) {
1840                 GuiView * gv = *it;
1841                 setCurrentView(gv);
1842                 gv->setLayoutDirection(layoutDirection());
1843                 gv->resetDialogs();
1844         }
1845
1846         processFuncRequest(FuncRequest(LFUN_SCREEN_FONT_UPDATE));
1847 }
1848
1849
1850 void GuiApplication::createView(int view_id)
1851 {
1852         createView(QString(), true, view_id);
1853 }
1854
1855
1856 void GuiApplication::createView(QString const & geometry_arg, bool autoShow,
1857         int view_id)
1858 {
1859         // release the keyboard which might have been grabed by the global
1860         // menubar on Mac to catch shortcuts even without any GuiView.
1861         if (d->global_menubar_)
1862                 d->global_menubar_->releaseKeyboard();
1863
1864         // create new view
1865         int id = view_id;
1866         while (d->views_.find(id) != d->views_.end())
1867                 id++;
1868
1869         LYXERR(Debug::GUI, "About to create new window with ID " << id);
1870         GuiView * view = new GuiView(id);
1871         // register view
1872         d->views_[id] = view;
1873
1874         if (autoShow) {
1875                 view->show();
1876                 setActiveWindow(view);
1877         }
1878
1879         if (!geometry_arg.isEmpty()) {
1880 #ifdef Q_WS_WIN
1881                 int x, y;
1882                 int w, h;
1883                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
1884                 re.indexIn(geometry_arg);
1885                 w = re.cap(1).toInt();
1886                 h = re.cap(2).toInt();
1887                 x = re.cap(3).toInt();
1888                 y = re.cap(4).toInt();
1889                 view->setGeometry(x, y, w, h);
1890 #endif
1891         }
1892         view->setFocus();
1893 }
1894
1895
1896 Clipboard & GuiApplication::clipboard()
1897 {
1898         return d->clipboard_;
1899 }
1900
1901
1902 Selection & GuiApplication::selection()
1903 {
1904         return d->selection_;
1905 }
1906
1907
1908 FontLoader & GuiApplication::fontLoader()
1909 {
1910         return d->font_loader_;
1911 }
1912
1913
1914 Toolbars const & GuiApplication::toolbars() const
1915 {
1916         return d->toolbars_;
1917 }
1918
1919
1920 Toolbars & GuiApplication::toolbars()
1921 {
1922         return d->toolbars_;
1923 }
1924
1925
1926 Menus const & GuiApplication::menus() const
1927 {
1928         return d->menus_;
1929 }
1930
1931
1932 Menus & GuiApplication::menus()
1933 {
1934         return d->menus_;
1935 }
1936
1937
1938 QList<int> GuiApplication::viewIds() const
1939 {
1940         return d->views_.keys();
1941 }
1942
1943
1944 ColorCache & GuiApplication::colorCache()
1945 {
1946         return d->color_cache_;
1947 }
1948
1949
1950 int GuiApplication::exec()
1951 {
1952         // asynchronously handle batch commands. This event will be in
1953         // the event queue in front of other asynchronous events. Hence,
1954         // we can assume in the latter that the gui is setup already.
1955         QTimer::singleShot(0, this, SLOT(execBatchCommands()));
1956
1957         return QApplication::exec();
1958 }
1959
1960
1961 void GuiApplication::exit(int status)
1962 {
1963         QApplication::exit(status);
1964 }
1965
1966
1967 void GuiApplication::setGuiLanguage()
1968 {
1969         // Set the language defined by the user.
1970         setRcGuiLanguage();
1971
1972         QString const default_language = toqstr(Messages::defaultLanguage());
1973         LYXERR(Debug::LOCALE, "Trying to set default locale to: " << default_language);
1974         QLocale const default_locale(default_language);
1975         QLocale::setDefault(default_locale);
1976
1977         // install translation file for Qt built-in dialogs
1978         QString const language_name = QString("qt_") + default_locale.name();
1979
1980         // language_name can be short (e.g. qt_zh) or long (e.g. qt_zh_CN).
1981         // Short-named translator can be loaded from a long name, but not the
1982         // opposite. Therefore, long name should be used without truncation.
1983         // c.f. http://doc.trolltech.com/4.1/qtranslator.html#load
1984         if (!d->qt_trans_.load(language_name,
1985                         QLibraryInfo::location(QLibraryInfo::TranslationsPath))) {
1986                 LYXERR(Debug::LOCALE, "Could not find Qt translations for locale "
1987                         << language_name);
1988         } else {
1989                 LYXERR(Debug::LOCALE, "Successfully installed Qt translations for locale "
1990                         << language_name);
1991         }
1992
1993         switch (default_locale.language()) {
1994         case QLocale::Arabic :
1995         case QLocale::Hebrew :
1996         case QLocale::Persian :
1997         case QLocale::Urdu :
1998                 setLayoutDirection(Qt::RightToLeft);
1999                 break;
2000         default:
2001                 setLayoutDirection(Qt::LeftToRight);
2002         }
2003 }
2004
2005
2006 void GuiApplication::execBatchCommands()
2007 {
2008         setGuiLanguage();
2009
2010         // Read menus
2011         if (!readUIFile(toqstr(lyxrc.ui_file)))
2012                 // Gives some error box here.
2013                 return;
2014
2015 #ifdef Q_WS_MACX
2016 #if QT_VERSION > 0x040600
2017         setAttribute(Qt::AA_MacDontSwapCtrlAndMeta,lyxrc.mac_dontswap_ctrl_meta);
2018 #endif
2019         // Create the global default menubar which is shown for the dialogs
2020         // and if no GuiView is visible.
2021         // This must be done after the session was recovered to know the "last files".
2022         d->global_menubar_ = new GlobalMenuBar();
2023         d->menus_.fillMenuBar(d->global_menubar_, 0, true);
2024 #endif
2025
2026         lyx::execBatchCommands();
2027 }
2028
2029
2030 QAbstractItemModel * GuiApplication::languageModel()
2031 {
2032         if (d->language_model_)
2033                 return d->language_model_;
2034
2035         QStandardItemModel * lang_model = new QStandardItemModel(this);
2036         lang_model->insertColumns(0, 3);
2037         int current_row;
2038         QIcon speller(getPixmap("images/", "dialog-show_spellchecker", "png"));
2039         QIcon saurus(getPixmap("images/", "thesaurus-entry", "png"));
2040         Languages::const_iterator it = lyx::languages.begin();
2041         Languages::const_iterator end = lyx::languages.end();
2042         for (; it != end; ++it) {
2043                 current_row = lang_model->rowCount();
2044                 lang_model->insertRows(current_row, 1);
2045                 QModelIndex pl_item = lang_model->index(current_row, 0);
2046                 QModelIndex sp_item = lang_model->index(current_row, 1);
2047                 QModelIndex th_item = lang_model->index(current_row, 2);
2048                 lang_model->setData(pl_item, qt_(it->second.display()), Qt::DisplayRole);
2049                 lang_model->setData(pl_item, toqstr(it->second.lang()), Qt::UserRole);
2050                 lang_model->setData(sp_item, qt_(it->second.display()), Qt::DisplayRole);
2051                 lang_model->setData(sp_item, toqstr(it->second.lang()), Qt::UserRole);
2052                 if (theSpellChecker() && theSpellChecker()->hasDictionary(&it->second))
2053                         lang_model->setData(sp_item, speller, Qt::DecorationRole);
2054                 lang_model->setData(th_item, qt_(it->second.display()), Qt::DisplayRole);
2055                 lang_model->setData(th_item, toqstr(it->second.lang()), Qt::UserRole);
2056                 if (thesaurus.thesaurusInstalled(from_ascii(it->second.code())))
2057                         lang_model->setData(th_item, saurus, Qt::DecorationRole);
2058         }
2059         d->language_model_ = new QSortFilterProxyModel(this);
2060         d->language_model_->setSourceModel(lang_model);
2061 #if QT_VERSION >= 0x040300
2062         d->language_model_->setSortLocaleAware(true);
2063 #endif
2064         return d->language_model_;
2065 }
2066
2067
2068 void GuiApplication::restoreGuiSession()
2069 {
2070         if (!lyxrc.load_session)
2071                 return;
2072
2073         Session & session = theSession();
2074         LastOpenedSection::LastOpened const & lastopened =
2075                 session.lastOpened().getfiles();
2076
2077         FileName active_file;
2078         // do not add to the lastfile list since these files are restored from
2079         // last session, and should be already there (regular files), or should
2080         // not be added at all (help files).
2081         for (size_t i = 0; i < lastopened.size(); ++i) {
2082                 FileName const & file_name = lastopened[i].file_name;
2083                 if (d->views_.empty() || (!lyxrc.open_buffers_in_tabs
2084                           && current_view_->documentBufferView() != 0)) {
2085                         boost::crc_32_type crc;
2086                         string const & fname = file_name.absFileName();
2087                         crc = for_each(fname.begin(), fname.end(), crc);
2088                         createView(crc.checksum());
2089                 }
2090                 current_view_->loadDocument(file_name, false);
2091
2092                 if (lastopened[i].active)
2093                         active_file = file_name;
2094         }
2095
2096         // Restore last active buffer
2097         Buffer * buffer = theBufferList().getBuffer(active_file);
2098         if (buffer)
2099                 current_view_->setBuffer(buffer);
2100
2101         // clear this list to save a few bytes of RAM
2102         session.lastOpened().clear();
2103 }
2104
2105
2106 QString const GuiApplication::romanFontName()
2107 {
2108         QFont font;
2109         font.setKerning(false);
2110         font.setStyleHint(QFont::Serif);
2111         font.setFamily("serif");
2112
2113         return QFontInfo(font).family();
2114 }
2115
2116
2117 QString const GuiApplication::sansFontName()
2118 {
2119         QFont font;
2120         font.setKerning(false);
2121         font.setStyleHint(QFont::SansSerif);
2122         font.setFamily("sans");
2123
2124         return QFontInfo(font).family();
2125 }
2126
2127
2128 QString const GuiApplication::typewriterFontName()
2129 {
2130         QFont font;
2131         font.setKerning(false);
2132         font.setStyleHint(QFont::TypeWriter);
2133         font.setFamily("monospace");
2134
2135         return QFontInfo(font).family();
2136 }
2137
2138
2139 void GuiApplication::handleRegularEvents()
2140 {
2141         ForkedCallsController::handleCompletedProcesses();
2142 }
2143
2144
2145 bool GuiApplication::event(QEvent * e)
2146 {
2147         switch(e->type()) {
2148         case QEvent::FileOpen: {
2149                 // Open a file; this happens only on Mac OS X for now.
2150                 //
2151                 // We do this asynchronously because on startup the batch
2152                 // commands are not executed here yet and the gui is not ready
2153                 // therefore.
2154                 QFileOpenEvent * foe = static_cast<QFileOpenEvent *>(e);
2155                 FuncRequest const fr(LFUN_FILE_OPEN, qstring_to_ucs4(foe->file()));
2156                 processFuncRequestAsync(fr);
2157                 e->accept();
2158                 return true;
2159         }
2160         default:
2161                 return QApplication::event(e);
2162         }
2163 }
2164
2165
2166 bool GuiApplication::notify(QObject * receiver, QEvent * event)
2167 {
2168         try {
2169                 return QApplication::notify(receiver, event);
2170         }
2171         catch (ExceptionMessage const & e) {
2172                 switch(e.type_) {
2173                 case ErrorException:
2174                         emergencyCleanup();
2175                         setQuitOnLastWindowClosed(false);
2176                         closeAllViews();
2177                         Alert::error(e.title_, e.details_);
2178 #ifndef NDEBUG
2179                         // Properly crash in debug mode in order to get a useful backtrace.
2180                         abort();
2181 #endif
2182                         // In release mode, try to exit gracefully.
2183                         this->exit(1);
2184
2185                 case BufferException: {
2186                         if (!current_view_->documentBufferView())
2187                                 return false;
2188                         Buffer * buf = &current_view_->documentBufferView()->buffer();
2189                         docstring details = e.details_ + '\n';
2190                         details += buf->emergencyWrite();
2191                         theBufferList().release(buf);
2192                         details += "\n" + _("The current document was closed.");
2193                         Alert::error(e.title_, details);
2194                         return false;
2195                 }
2196                 case WarningException:
2197                         Alert::warning(e.title_, e.details_);
2198                         return false;
2199                 }
2200         }
2201         catch (exception const & e) {
2202                 docstring s = _("LyX has caught an exception, it will now "
2203                         "attempt to save all unsaved documents and exit."
2204                         "\n\nException: ");
2205                 s += from_ascii(e.what());
2206                 Alert::error(_("Software exception Detected"), s);
2207                 lyx_exit(1);
2208         }
2209         catch (...) {
2210                 docstring s = _("LyX has caught some really weird exception, it will "
2211                         "now attempt to save all unsaved documents and exit.");
2212                 Alert::error(_("Software exception Detected"), s);
2213                 lyx_exit(1);
2214         }
2215
2216         return false;
2217 }
2218
2219
2220 bool GuiApplication::getRgbColor(ColorCode col, RGBColor & rgbcol)
2221 {
2222         QColor const & qcol = d->color_cache_.get(col);
2223         if (!qcol.isValid()) {
2224                 rgbcol.r = 0;
2225                 rgbcol.g = 0;
2226                 rgbcol.b = 0;
2227                 return false;
2228         }
2229         rgbcol.r = qcol.red();
2230         rgbcol.g = qcol.green();
2231         rgbcol.b = qcol.blue();
2232         return true;
2233 }
2234
2235
2236 string const GuiApplication::hexName(ColorCode col)
2237 {
2238         return ltrim(fromqstr(d->color_cache_.get(col).name()), "#");
2239 }
2240
2241
2242 void GuiApplication::registerSocketCallback(int fd, SocketCallback func)
2243 {
2244         SocketNotifier * sn = new SocketNotifier(this, fd, func);
2245         d->socket_notifiers_[fd] = sn;
2246         connect(sn, SIGNAL(activated(int)), this, SLOT(socketDataReceived(int)));
2247 }
2248
2249
2250 void GuiApplication::socketDataReceived(int fd)
2251 {
2252         d->socket_notifiers_[fd]->func_();
2253 }
2254
2255
2256 void GuiApplication::unregisterSocketCallback(int fd)
2257 {
2258         d->socket_notifiers_.take(fd)->setEnabled(false);
2259 }
2260
2261
2262 void GuiApplication::commitData(QSessionManager & sm)
2263 {
2264         /// The implementation is required to avoid an application exit
2265         /// when session state save is triggered by session manager.
2266         /// The default implementation sends a close event to all
2267         /// visible top level widgets when session managment allows
2268         /// interaction.
2269         /// We are changing that to close all wiew one by one.
2270         /// FIXME: verify if the default implementation is enough now.
2271         if (sm.allowsInteraction() && !closeAllViews())
2272                 sm.cancel();
2273 }
2274
2275
2276 void GuiApplication::unregisterView(GuiView * gv)
2277 {
2278         LASSERT(d->views_[gv->id()] == gv, /**/);
2279         d->views_.remove(gv->id());
2280         if (current_view_ == gv)
2281                 current_view_ = 0;
2282 }
2283
2284
2285 bool GuiApplication::closeAllViews()
2286 {
2287         if (d->views_.empty())
2288                 return true;
2289
2290         // When a view/window was closed before without quitting LyX, there
2291         // are already entries in the lastOpened list.
2292         theSession().lastOpened().clear();
2293
2294         QList<GuiView *> views = d->views_.values();
2295         foreach (GuiView * view, views) {
2296                 if (!view->closeScheduled())
2297                         return false;
2298         }
2299
2300         d->views_.clear();
2301         return true;
2302 }
2303
2304
2305 GuiView & GuiApplication::view(int id) const
2306 {
2307         LASSERT(d->views_.contains(id), /**/);
2308         return *d->views_.value(id);
2309 }
2310
2311
2312 void GuiApplication::hideDialogs(string const & name, Inset * inset) const
2313 {
2314         QList<GuiView *> views = d->views_.values();
2315         foreach (GuiView * view, views)
2316                 view->hideDialog(name, inset);
2317 }
2318
2319
2320 Buffer const * GuiApplication::updateInset(Inset const * inset) const
2321 {
2322         Buffer const * buffer_ = 0;
2323         QHash<int, GuiView *>::iterator end = d->views_.end();
2324         for (QHash<int, GuiView *>::iterator it = d->views_.begin(); it != end; ++it) {
2325                 if (Buffer const * ptr = (*it)->updateInset(inset))
2326                         buffer_ = ptr;
2327         }
2328         return buffer_;
2329 }
2330
2331
2332 bool GuiApplication::searchMenu(FuncRequest const & func,
2333         docstring_list & names) const
2334 {
2335         return d->menus_.searchMenu(func, names);
2336 }
2337
2338
2339 bool GuiApplication::readUIFile(QString const & name, bool include)
2340 {
2341         LYXERR(Debug::INIT, "About to read " << name << "...");
2342
2343         FileName ui_path;
2344         if (include) {
2345                 ui_path = libFileSearch("ui", name, "inc");
2346                 if (ui_path.empty())
2347                         ui_path = libFileSearch("ui", changeExtension(name, "inc"));
2348         } else {
2349                 ui_path = libFileSearch("ui", name, "ui");
2350         }
2351
2352         if (ui_path.empty()) {
2353                 static const QString defaultUIFile = "default";
2354                 LYXERR(Debug::INIT, "Could not find " << name);
2355                 if (include) {
2356                         Alert::warning(_("Could not find UI definition file"),
2357                                 bformat(_("Error while reading the included file\n%1$s\n"
2358                                         "Please check your installation."), qstring_to_ucs4(name)));
2359                         return false;
2360                 }
2361                 if (name == defaultUIFile) {
2362                         LYXERR(Debug::INIT, "Could not find default UI file!!");
2363                         Alert::warning(_("Could not find default UI file"),
2364                                 _("LyX could not find the default UI file!\n"
2365                                   "Please check your installation."));
2366                         return false;
2367                 }
2368                 Alert::warning(_("Could not find UI definition file"),
2369                 bformat(_("Error while reading the configuration file\n%1$s\n"
2370                         "Falling back to default.\n"
2371                         "Please look under Tools>Preferences>User Interface and\n"
2372                         "check which User Interface file you are using."), qstring_to_ucs4(name)));
2373                 return readUIFile(defaultUIFile, false);
2374         }
2375
2376         // Ensure that a file is read only once (prevents include loops)
2377         static QStringList uifiles;
2378         QString const uifile = toqstr(ui_path.absFileName());
2379         if (uifiles.contains(uifile)) {
2380                 if (!include) {
2381                         // We are reading again the top uifile so reset the safeguard:
2382                         uifiles.clear();
2383                         d->menus_.reset();
2384                         d->toolbars_.reset();
2385                 } else {
2386                         LYXERR(Debug::INIT, "UI file '" << name << "' has been read already. "
2387                                 << "Is this an include loop?");
2388                         return false;
2389                 }
2390         }
2391         uifiles.push_back(uifile);
2392
2393         LYXERR(Debug::INIT, "Found " << name << " in " << ui_path);
2394
2395         enum {
2396                 ui_menuset = 1,
2397                 ui_toolbars,
2398                 ui_toolbarset,
2399                 ui_include,
2400                 ui_last
2401         };
2402
2403         LexerKeyword uitags[] = {
2404                 { "include", ui_include },
2405                 { "menuset", ui_menuset },
2406                 { "toolbars", ui_toolbars },
2407                 { "toolbarset", ui_toolbarset }
2408         };
2409
2410         Lexer lex(uitags);
2411         lex.setFile(ui_path);
2412         if (!lex.isOK()) {
2413                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
2414                        << endl;
2415         }
2416
2417         if (lyxerr.debugging(Debug::PARSER))
2418                 lex.printTable(lyxerr);
2419
2420         // store which ui files define Toolbars
2421         static QStringList toolbar_uifiles;
2422
2423         while (lex.isOK()) {
2424                 switch (lex.lex()) {
2425                 case ui_include: {
2426                         lex.next(true);
2427                         QString const file = toqstr(lex.getString());
2428                         if (!readUIFile(file, true))
2429                                 return false;
2430                         break;
2431                 }
2432                 case ui_menuset:
2433                         d->menus_.read(lex);
2434                         break;
2435
2436                 case ui_toolbarset:
2437                         d->toolbars_.readToolbars(lex);
2438                         break;
2439
2440                 case ui_toolbars:
2441                         d->toolbars_.readToolbarSettings(lex);
2442                         toolbar_uifiles.push_back(uifile);
2443                         break;
2444
2445                 default:
2446                         if (!rtrim(lex.getString()).empty())
2447                                 lex.printError("LyX::ReadUIFile: "
2448                                                "Unknown menu tag: `$$Token'");
2449                         break;
2450                 }
2451         }
2452
2453         if (include)
2454                 return true;
2455
2456         QSettings settings;
2457         settings.beginGroup("ui_files");
2458         bool touched = false;
2459         for (int i = 0; i != uifiles.size(); ++i) {
2460                 QFileInfo fi(uifiles[i]);
2461                 QDateTime const date_value = fi.lastModified();
2462                 QString const name_key = QString::number(i);
2463                 // if an ui file which defines Toolbars has changed,
2464                 // we have to reset the settings
2465                 if (toolbar_uifiles.contains(uifiles[i])
2466                  && (!settings.contains(name_key)
2467                  || settings.value(name_key).toString() != uifiles[i]
2468                  || settings.value(name_key + "/date").toDateTime() != date_value)) {
2469                         touched = true;
2470                         settings.setValue(name_key, uifiles[i]);
2471                         settings.setValue(name_key + "/date", date_value);
2472                 }
2473         }
2474         settings.endGroup();
2475         if (touched)
2476                 settings.remove("views");
2477
2478         return true;
2479 }
2480
2481
2482 void GuiApplication::onLastWindowClosed()
2483 {
2484         if (d->global_menubar_)
2485                 d->global_menubar_->grabKeyboard();
2486 }
2487
2488
2489 ////////////////////////////////////////////////////////////////////////
2490 //
2491 // X11 specific stuff goes here...
2492
2493 #ifdef Q_WS_X11
2494 bool GuiApplication::x11EventFilter(XEvent * xev)
2495 {
2496         if (!current_view_)
2497                 return false;
2498
2499         switch (xev->type) {
2500         case SelectionRequest: {
2501                 if (xev->xselectionrequest.selection != XA_PRIMARY)
2502                         break;
2503                 LYXERR(Debug::SELECTION, "X requested selection.");
2504                 BufferView * bv = current_view_->currentBufferView();
2505                 if (bv) {
2506                         docstring const sel = bv->requestSelection();
2507                         if (!sel.empty())
2508                                 d->selection_.put(sel);
2509                 }
2510                 break;
2511         }
2512         case SelectionClear: {
2513                 if (xev->xselectionclear.selection != XA_PRIMARY)
2514                         break;
2515                 LYXERR(Debug::SELECTION, "Lost selection.");
2516                 BufferView * bv = current_view_->currentBufferView();
2517                 if (bv)
2518                         bv->clearSelection();
2519                 break;
2520         }
2521         }
2522         return false;
2523 }
2524 #endif
2525
2526 } // namespace frontend
2527
2528
2529 void hideDialogs(std::string const & name, Inset * inset)
2530 {
2531         if (theApp())
2532                 frontend::guiApp->hideDialogs(name, inset);
2533 }
2534
2535
2536 ////////////////////////////////////////////////////////////////////
2537 //
2538 // Font stuff
2539 //
2540 ////////////////////////////////////////////////////////////////////
2541
2542 frontend::FontLoader & theFontLoader()
2543 {
2544         LASSERT(frontend::guiApp, /**/);
2545         return frontend::guiApp->fontLoader();
2546 }
2547
2548
2549 frontend::FontMetrics const & theFontMetrics(Font const & f)
2550 {
2551         return theFontMetrics(f.fontInfo());
2552 }
2553
2554
2555 frontend::FontMetrics const & theFontMetrics(FontInfo const & f)
2556 {
2557         LASSERT(frontend::guiApp, /**/);
2558         return frontend::guiApp->fontLoader().metrics(f);
2559 }
2560
2561
2562 ////////////////////////////////////////////////////////////////////
2563 //
2564 // Misc stuff
2565 //
2566 ////////////////////////////////////////////////////////////////////
2567
2568 frontend::Clipboard & theClipboard()
2569 {
2570         LASSERT(frontend::guiApp, /**/);
2571         return frontend::guiApp->clipboard();
2572 }
2573
2574
2575 frontend::Selection & theSelection()
2576 {
2577         LASSERT(frontend::guiApp, /**/);
2578         return frontend::guiApp->selection();
2579 }
2580
2581
2582 } // namespace lyx
2583
2584 #include "moc_GuiApplication.cpp"