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, bool switchToBuffer)
1128 {
1129         LASSERT(current_view_, /**/);
1130         if (!theSession().bookmarks().isValid(idx))
1131                 return;
1132         BookmarksSection::Bookmark const & bm = theSession().bookmarks().bookmark(idx);
1133         LASSERT(!bm.filename.empty(), /**/);
1134         string const file = bm.filename.absFileName();
1135         // if the file is not opened, open it.
1136         if (!theBufferList().exists(bm.filename)) {
1137                 if (openFile)
1138                         dispatch(FuncRequest(LFUN_FILE_OPEN, file));
1139                 else
1140                         return;
1141         }
1142         // open may fail, so we need to test it again
1143         if (!theBufferList().exists(bm.filename))
1144                 return;
1145
1146         // bm can be changed when saving
1147         BookmarksSection::Bookmark tmp = bm;
1148
1149         // Special case idx == 0 used for back-from-back jump navigation
1150         if (idx == 0)
1151                 dispatch(FuncRequest(LFUN_BOOKMARK_SAVE, "0"));
1152
1153         // if the current buffer is not that one, switch to it.
1154         if (!current_view_->documentBufferView()
1155                 || current_view_->documentBufferView()->buffer().fileName() != tmp.filename) {
1156                 if (!switchToBuffer)
1157                         return;
1158                 dispatch(FuncRequest(LFUN_BUFFER_SWITCH, file));
1159         }
1160
1161         // moveToPosition try paragraph id first and then paragraph (pit, pos).
1162         if (!current_view_->documentBufferView()->moveToPosition(
1163                 tmp.bottom_pit, tmp.bottom_pos, tmp.top_id, tmp.top_pos))
1164                 return;
1165
1166         // bm changed
1167         if (idx == 0)
1168                 return;
1169
1170         // Cursor jump succeeded!
1171         Cursor const & cur = current_view_->documentBufferView()->cursor();
1172         pit_type new_pit = cur.pit();
1173         pos_type new_pos = cur.pos();
1174         int new_id = cur.paragraph().id();
1175
1176         // if bottom_pit, bottom_pos or top_id has been changed, update bookmark
1177         // see http://www.lyx.org/trac/ticket/3092
1178         if (bm.bottom_pit != new_pit || bm.bottom_pos != new_pos
1179                 || bm.top_id != new_id) {
1180                 const_cast<BookmarksSection::Bookmark &>(bm).updatePos(
1181                         new_pit, new_pos, new_id);
1182         }
1183 }
1184
1185 // This function runs "configure" and then rereads lyx.defaults to
1186 // reconfigure the automatic settings.
1187 void GuiApplication::reconfigure(string const & option)
1188 {
1189         // emit message signal.
1190         if (current_view_)
1191                 current_view_->message(_("Running configure..."));
1192
1193         // Run configure in user lyx directory
1194         PathChanger p(package().user_support());
1195         string configure_command = package().configure_command();
1196         configure_command += option;
1197         Systemcall one;
1198         int ret = one.startscript(Systemcall::Wait, configure_command);
1199         p.pop();
1200         // emit message signal.
1201         if (current_view_)
1202                 current_view_->message(_("Reloading configuration..."));
1203         lyxrc.read(libFileSearch(QString(), "lyxrc.defaults"));
1204         // Re-read packages.lst
1205         LaTeXFeatures::getAvailable();
1206
1207         if (ret)
1208                 Alert::information(_("System reconfiguration failed"),
1209                            _("The system reconfiguration has failed.\n"
1210                                   "Default textclass is used but LyX may "
1211                                   "not be able to work properly.\n"
1212                                   "Please reconfigure again if needed."));
1213         else
1214                 Alert::information(_("System reconfigured"),
1215                            _("The system has been reconfigured.\n"
1216                              "You need to restart LyX to make use of any\n"
1217                              "updated document class specifications."));
1218 }
1219
1220
1221 void GuiApplication::dispatch(FuncRequest const & cmd, DispatchResult & dr)
1222 {
1223         string const argument = to_utf8(cmd.argument());
1224         FuncCode const action = cmd.action();
1225
1226         LYXERR(Debug::ACTION, "cmd: " << cmd);
1227
1228         // we have not done anything wrong yet.
1229         dr.setError(false);
1230
1231         FuncStatus const flag = getStatus(cmd);
1232         if (!flag.enabled()) {
1233                 // We cannot use this function here
1234                 LYXERR(Debug::ACTION, "action "
1235                        << lyxaction.getActionName(action)
1236                        << " [" << action << "] is disabled at this location");
1237                 if (current_view_)
1238                         current_view_->restartCursor();
1239                 dr.setMessage(flag.message());
1240                 dr.setError(true);
1241                 dr.dispatched(false);
1242                 dr.screenUpdate(Update::None);
1243                 dr.clearBufferUpdate();
1244                 return;
1245         };
1246
1247         // Assumes that the action will be dispatched.
1248         dr.dispatched(true);
1249
1250         switch (cmd.action()) {
1251
1252         case LFUN_WINDOW_NEW:
1253                 createView(toqstr(cmd.argument()));
1254                 break;
1255
1256         case LFUN_WINDOW_CLOSE:
1257                 // update bookmark pit of the current buffer before window close
1258                 for (size_t i = 0; i < theSession().bookmarks().size(); ++i)
1259                         gotoBookmark(i+1, false, false);
1260                 // clear the last opened list, because
1261                 // maybe this will end the session
1262                 theSession().lastOpened().clear();
1263                 current_view_->closeScheduled();
1264                 break;
1265
1266         case LFUN_LYX_QUIT:
1267                 // quitting is triggered by the gui code
1268                 // (leaving the event loop).
1269                 if (current_view_)
1270                         current_view_->message(from_utf8(N_("Exiting.")));
1271                 if (closeAllViews())
1272                         quit();
1273                 break;
1274
1275         case LFUN_SCREEN_FONT_UPDATE: {
1276                 // handle the screen font changes.
1277                 d->font_loader_.update();
1278                 // Backup current_view_
1279                 GuiView * view = current_view_;
1280                 // Set current_view_ to zero to forbid GuiWorkArea::redraw()
1281                 // to skip the refresh.
1282                 current_view_ = 0;
1283                 theBufferList().changed(false);
1284                 // Restore current_view_
1285                 current_view_ = view;
1286                 break;
1287         }
1288
1289         case LFUN_BUFFER_NEW:
1290                 if (d->views_.empty()
1291                    || (!lyxrc.open_buffers_in_tabs && current_view_->documentBufferView() != 0)) {
1292                         createView(QString(), false); // keep hidden
1293                         current_view_->newDocument(to_utf8(cmd.argument()), false);
1294                         current_view_->show();
1295                         setActiveWindow(current_view_);
1296                 } else {
1297                         current_view_->newDocument(to_utf8(cmd.argument()), false);
1298                 }
1299                 break;
1300
1301         case LFUN_BUFFER_NEW_TEMPLATE:
1302                 if (d->views_.empty()
1303                    || (!lyxrc.open_buffers_in_tabs && current_view_->documentBufferView() != 0)) {
1304                         createView();
1305                         current_view_->newDocument(to_utf8(cmd.argument()), true);
1306                         if (!current_view_->documentBufferView())
1307                                 current_view_->close();
1308                 } else {
1309                         current_view_->newDocument(to_utf8(cmd.argument()), true);
1310                 }
1311                 break;
1312
1313         case LFUN_FILE_OPEN:
1314                 // FIXME: create a new method shared with LFUN_HELP_OPEN.
1315                 if (d->views_.empty()
1316                         || (!lyxrc.open_buffers_in_tabs && current_view_->documentBufferView() != 0)) {
1317                         string const fname = to_utf8(cmd.argument());
1318                         // We want the ui session to be saved per document and not per
1319                         // window number. The filename crc is a good enough identifier.
1320                         boost::crc_32_type crc;
1321                         crc = for_each(fname.begin(), fname.end(), crc);
1322                         createView(crc.checksum());
1323                         current_view_->openDocument(fname);
1324                         if (current_view_ && !current_view_->documentBufferView())
1325                                 current_view_->close();
1326                 } else
1327                         current_view_->openDocument(to_utf8(cmd.argument()));
1328                 break;
1329
1330         case LFUN_HELP_OPEN: {
1331                 // FIXME: create a new method shared with LFUN_FILE_OPEN.
1332                 if (current_view_ == 0)
1333                         createView();
1334                 string const arg = to_utf8(cmd.argument());
1335                 if (arg.empty()) {
1336                         current_view_->message(_("Missing argument"));
1337                         break;
1338                 }
1339                 FileName fname = i18nLibFileSearch("doc", arg, "lyx");
1340                 if (fname.empty())
1341                         fname = i18nLibFileSearch("examples", arg, "lyx");
1342
1343                 if (fname.empty()) {
1344                         lyxerr << "LyX: unable to find documentation file `"
1345                                << arg << "'. Bad installation?" << endl;
1346                         break;
1347                 }
1348                 current_view_->message(bformat(_("Opening help file %1$s..."),
1349                                                makeDisplayPath(fname.absFileName())));
1350                 Buffer * buf = current_view_->loadDocument(fname, false);
1351                 if (buf) {
1352                         current_view_->setBuffer(buf);
1353 #ifndef DEVEL_VERSION
1354                         buf->setReadonly(true);
1355 #endif
1356                         buf->errors("Parse");
1357                 }
1358                 break;
1359         }
1360
1361         case LFUN_SET_COLOR: {
1362                 string lyx_name;
1363                 string const x11_name = split(to_utf8(cmd.argument()), lyx_name, ' ');
1364                 if (lyx_name.empty() || x11_name.empty()) {
1365                         current_view_->message(
1366                                         _("Syntax: set-color <lyx_name> <x11_name>"));
1367                         break;
1368                 }
1369
1370                 string const graphicsbg = lcolor.getLyXName(Color_graphicsbg);
1371                 bool const graphicsbg_changed =
1372                                 lyx_name == graphicsbg && x11_name != graphicsbg;
1373                 if (graphicsbg_changed) {
1374                         // FIXME: The graphics cache no longer has a changeDisplay method.
1375 #if 0
1376                         graphics::GCache::get().changeDisplay(true);
1377 #endif
1378                 }
1379
1380                 if (!lcolor.setColor(lyx_name, x11_name)) {
1381                         current_view_->message(
1382                                 bformat(_("Set-color \"%1$s\" failed "
1383                                         "- color is undefined or "
1384                                         "may not be redefined"),
1385                                         from_utf8(lyx_name)));
1386                         break;
1387                 }
1388                 // Make sure we don't keep old colors in cache.
1389                 d->color_cache_.clear();
1390                 break;
1391         }
1392
1393         case LFUN_LYXRC_APPLY: {
1394                 // reset active key sequences, since the bindings
1395                 // are updated (bug 6064)
1396                 d->keyseq.reset();
1397                 LyXRC const lyxrc_orig = lyxrc;
1398
1399                 istringstream ss(to_utf8(cmd.argument()));
1400                 bool const success = lyxrc.read(ss) == 0;
1401
1402                 if (!success) {
1403                         lyxerr << "Warning in LFUN_LYXRC_APPLY!\n"
1404                                         << "Unable to read lyxrc data"
1405                                         << endl;
1406                         break;
1407                 }
1408
1409                 actOnUpdatedPrefs(lyxrc_orig, lyxrc);
1410                 setSpellChecker();
1411                 resetGui();
1412
1413                 break;
1414         }
1415
1416         case LFUN_COMMAND_PREFIX:
1417                 dispatch(FuncRequest(LFUN_MESSAGE, d->keyseq.printOptions(true)));
1418                 break;
1419
1420         case LFUN_CANCEL: {
1421                 d->keyseq.reset();
1422                 d->meta_fake_bit = NoModifier;
1423                 GuiView * gv = currentView();
1424                 if (gv && gv->currentBufferView())
1425                         // cancel any selection
1426                         lyx::dispatch(FuncRequest(LFUN_MARK_OFF));
1427                 dr.setMessage(from_ascii(N_("Cancel")));
1428                 break;
1429         }
1430         case LFUN_META_PREFIX:
1431                 d->meta_fake_bit = AltModifier;
1432                 dr.setMessage(d->keyseq.print(KeySequence::ForGui));
1433                 break;
1434
1435         // --- Menus -----------------------------------------------
1436         case LFUN_RECONFIGURE:
1437                 // argument is any additional parameter to the configure.py command
1438                 reconfigure(to_utf8(cmd.argument()));
1439                 break;
1440
1441         // --- lyxserver commands ----------------------------
1442         case LFUN_SERVER_GET_FILENAME: {
1443                 LASSERT(current_view_ && current_view_->documentBufferView(), return);
1444                 docstring const fname = from_utf8(
1445                                 current_view_->documentBufferView()->buffer().absFileName());
1446                 dr.setMessage(fname);
1447                 LYXERR(Debug::INFO, "FNAME[" << fname << ']');
1448                 break;
1449         }
1450         case LFUN_SERVER_NOTIFY: {
1451                 docstring const dispatch_buffer = d->keyseq.print(KeySequence::Portable);
1452                 dr.setMessage(dispatch_buffer);
1453                 theServer().notifyClient(to_utf8(dispatch_buffer));
1454                 break;
1455         }
1456
1457         case LFUN_CURSOR_FOLLOWS_SCROLLBAR_TOGGLE:
1458                 lyxrc.cursor_follows_scrollbar = !lyxrc.cursor_follows_scrollbar;
1459                 break;
1460
1461         case LFUN_REPEAT: {
1462                 // repeat command
1463                 string countstr;
1464                 string rest = split(argument, countstr, ' ');
1465                 istringstream is(countstr);
1466                 int count = 0;
1467                 is >> count;
1468                 //lyxerr << "repeat: count: " << count << " cmd: " << rest << endl;
1469                 for (int i = 0; i < count; ++i)
1470                         dispatch(lyxaction.lookupFunc(rest));
1471                 break;
1472         }
1473
1474         case LFUN_COMMAND_SEQUENCE: {
1475                 // argument contains ';'-terminated commands
1476                 string arg = argument;
1477                 // FIXME: this LFUN should also work without any view.
1478                 Buffer * buffer = (current_view_ && current_view_->documentBufferView())
1479                                   ? &(current_view_->documentBufferView()->buffer()) : 0;
1480                 if (buffer)
1481                         buffer->undo().beginUndoGroup();
1482                 while (!arg.empty()) {
1483                         string first;
1484                         arg = split(arg, first, ';');
1485                         FuncRequest func(lyxaction.lookupFunc(first));
1486                         func.setOrigin(cmd.origin());
1487                         dispatch(func);
1488                 }
1489                 // the buffer may have been closed by one action
1490                 if (theBufferList().isLoaded(buffer))
1491                         buffer->undo().endUndoGroup();
1492                 break;
1493         }
1494
1495         case LFUN_COMMAND_ALTERNATIVES: {
1496                 // argument contains ';'-terminated commands
1497                 string arg = argument;
1498                 while (!arg.empty()) {
1499                         string first;
1500                         arg = split(arg, first, ';');
1501                         FuncRequest func(lyxaction.lookupFunc(first));
1502                         func.setOrigin(cmd.origin());
1503                         FuncStatus const stat = getStatus(func);
1504                         if (stat.enabled()) {
1505                                 dispatch(func);
1506                                 break;
1507                         }
1508                 }
1509                 break;
1510         }
1511
1512         case LFUN_CALL: {
1513                 FuncRequest func;
1514                 if (theTopLevelCmdDef().lock(argument, func)) {
1515                         func.setOrigin(cmd.origin());
1516                         dispatch(func);
1517                         theTopLevelCmdDef().release(argument);
1518                 } else {
1519                         if (func.action() == LFUN_UNKNOWN_ACTION) {
1520                                 // unknown command definition
1521                                 lyxerr << "Warning: unknown command definition `"
1522                                                 << argument << "'"
1523                                                 << endl;
1524                         } else {
1525                                 // recursion detected
1526                                 lyxerr << "Warning: Recursion in the command definition `"
1527                                                 << argument << "' detected"
1528                                                 << endl;
1529                         }
1530                 }
1531                 break;
1532         }
1533
1534         case LFUN_PREFERENCES_SAVE:
1535                 lyxrc.write(support::makeAbsPath("preferences",
1536                         package().user_support().absFileName()), false);
1537                 break;
1538
1539         case LFUN_BUFFER_SAVE_AS_DEFAULT: {
1540                 string const fname = addName(addPath(package().user_support().absFileName(),
1541                         "templates/"), "defaults.lyx");
1542                 Buffer defaults(fname);
1543
1544                 istringstream ss(argument);
1545                 Lexer lex;
1546                 lex.setStream(ss);
1547                 int const unknown_tokens = defaults.readHeader(lex);
1548
1549                 if (unknown_tokens != 0) {
1550                         lyxerr << "Warning in LFUN_BUFFER_SAVE_AS_DEFAULT!\n"
1551                                << unknown_tokens << " unknown token"
1552                                << (unknown_tokens == 1 ? "" : "s")
1553                                << endl;
1554                 }
1555
1556                 if (defaults.writeFile(FileName(defaults.absFileName())))
1557                         dr.setMessage(bformat(_("Document defaults saved in %1$s"),
1558                                               makeDisplayPath(fname)));
1559                 else {
1560                         dr.setError(true);
1561                         dr.setMessage(from_ascii(N_("Unable to save document defaults")));
1562                 }
1563                 break;
1564         }
1565
1566         case LFUN_BOOKMARK_GOTO:
1567                 // go to bookmark, open unopened file and switch to buffer if necessary
1568                 gotoBookmark(convert<unsigned int>(to_utf8(cmd.argument())), true, true);
1569                 dr.screenUpdate(Update::Force | Update::FitCursor);
1570                 break;
1571
1572         case LFUN_BOOKMARK_CLEAR:
1573                 theSession().bookmarks().clear();
1574                 break;
1575
1576         case LFUN_DEBUG_LEVEL_SET:
1577                 lyxerr.setLevel(Debug::value(to_utf8(cmd.argument())));
1578                 break;
1579
1580         default:
1581                 // Everything below is only for active window
1582                 if (current_view_ == 0)
1583                         break;
1584
1585                 // Let the current GuiView dispatch its own actions.
1586                 current_view_->dispatch(cmd, dr);
1587
1588                 if (dr.dispatched())
1589                         break;
1590
1591                 BufferView * bv = current_view_->currentBufferView();
1592                 LASSERT(bv, /**/);
1593
1594                 // Let the current BufferView dispatch its own actions.
1595                 bv->dispatch(cmd, dr);
1596                 if (dr.dispatched())
1597                         break;
1598
1599                 BufferView * doc_bv = current_view_->documentBufferView();
1600                 // Try with the document BufferView dispatch if any.
1601                 if (doc_bv) {
1602                         doc_bv->dispatch(cmd, dr);
1603                         if (dr.dispatched())
1604                                 break;
1605                 }
1606
1607                 // OK, so try the current Buffer itself...
1608                 bv->buffer().dispatch(cmd, dr);
1609                 if (dr.dispatched())
1610                         break;
1611
1612                 // and with the document Buffer.
1613                 if (doc_bv) {
1614                         doc_bv->buffer().dispatch(cmd, dr);
1615                         if (dr.dispatched())
1616                                 break;
1617                 }
1618
1619                 // Let the current Cursor dispatch its own actions.
1620                 Cursor old = bv->cursor();
1621                 bv->cursor().dispatch(cmd);
1622
1623                 // notify insets we just left
1624                 if (bv->cursor() != old) {
1625                         old.fixIfBroken();
1626                         bool badcursor = notifyCursorLeavesOrEnters(old, bv->cursor());
1627                         if (badcursor)
1628                                 bv->cursor().fixIfBroken();
1629                 }
1630
1631                 // update completion. We do it here and not in
1632                 // processKeySym to avoid another redraw just for a
1633                 // changed inline completion
1634                 if (cmd.origin() == FuncRequest::KEYBOARD) {
1635                         if (cmd.action() == LFUN_SELF_INSERT
1636                                         || (cmd.action() == LFUN_ERT_INSERT && bv->cursor().inMathed()))
1637                                 current_view_->updateCompletion(bv->cursor(), true, true);
1638                         else if (cmd.action() == LFUN_CHAR_DELETE_BACKWARD)
1639                                 current_view_->updateCompletion(bv->cursor(), false, true);
1640                         else
1641                                 current_view_->updateCompletion(bv->cursor(), false, false);
1642                 }
1643
1644                 dr = bv->cursor().result();
1645         }
1646
1647         // if we executed a mutating lfun, mark the buffer as dirty
1648         Buffer * doc_buffer = (current_view_ && current_view_->documentBufferView())
1649                       ? &(current_view_->documentBufferView()->buffer()) : 0;
1650         if (doc_buffer && theBufferList().isLoaded(doc_buffer)
1651                 && flag.enabled()
1652                 && !lyxaction.funcHasFlag(action, LyXAction::NoBuffer)
1653                 && !lyxaction.funcHasFlag(action, LyXAction::ReadOnly))
1654                 current_view_->currentBufferView()->buffer().markDirty();
1655 }
1656
1657
1658 docstring GuiApplication::viewStatusMessage()
1659 {
1660         // When meta-fake key is pressed, show the key sequence so far + "M-".
1661         if (d->meta_fake_bit != NoModifier)
1662                 return d->keyseq.print(KeySequence::ForGui) + "M-";
1663
1664         // Else, when a non-complete key sequence is pressed,
1665         // show the available options.
1666         if (d->keyseq.length() > 0 && !d->keyseq.deleted())
1667                 return d->keyseq.printOptions(true);
1668
1669         return docstring();
1670 }
1671
1672
1673 void GuiApplication::handleKeyFunc(FuncCode action)
1674 {
1675         char_type c = 0;
1676
1677         if (d->keyseq.length())
1678                 c = 0;
1679         GuiView * gv = currentView();
1680         LASSERT(gv && gv->currentBufferView(), return);
1681         BufferView * bv = gv->currentBufferView();
1682         bv->getIntl().getTransManager().deadkey(
1683                 c, get_accent(action).accent, bv->cursor().innerText(),
1684                 bv->cursor());
1685         // Need to clear, in case the minibuffer calls these
1686         // actions
1687         d->keyseq.clear();
1688         // copied verbatim from do_accent_char
1689         bv->cursor().resetAnchor();
1690 }
1691
1692
1693 void GuiApplication::processKeySym(KeySymbol const & keysym, KeyModifier state)
1694 {
1695         LYXERR(Debug::KEY, "KeySym is " << keysym.getSymbolName());
1696
1697         // Do nothing if we have nothing (JMarc)
1698         if (!keysym.isOK()) {
1699                 LYXERR(Debug::KEY, "Empty kbd action (probably composing)");
1700                 current_view_->restartCursor();
1701                 return;
1702         }
1703
1704         if (keysym.isModifier()) {
1705                 LYXERR(Debug::KEY, "isModifier true");
1706                 if (current_view_)
1707                         current_view_->restartCursor();
1708                 return;
1709         }
1710
1711         char_type encoded_last_key = keysym.getUCSEncoded();
1712
1713         // Do a one-deep top-level lookup for
1714         // cancel and meta-fake keys. RVDK_PATCH_5
1715         d->cancel_meta_seq.reset();
1716
1717         FuncRequest func = d->cancel_meta_seq.addkey(keysym, state);
1718         LYXERR(Debug::KEY, "action first set to [" << func.action() << ']');
1719
1720         // When not cancel or meta-fake, do the normal lookup.
1721         // Note how the meta_fake Mod1 bit is OR-ed in and reset afterwards.
1722         // Mostly, meta_fake_bit = NoModifier. RVDK_PATCH_5.
1723         if ((func.action() != LFUN_CANCEL) && (func.action() != LFUN_META_PREFIX)) {
1724                 // remove Caps Lock and Mod2 as a modifiers
1725                 func = d->keyseq.addkey(keysym, (state | d->meta_fake_bit));
1726                 LYXERR(Debug::KEY, "action now set to [" << func.action() << ']');
1727         }
1728
1729         // Dont remove this unless you know what you are doing.
1730         d->meta_fake_bit = NoModifier;
1731
1732         // Can this happen now ?
1733         if (func.action() == LFUN_NOACTION)
1734                 func = FuncRequest(LFUN_COMMAND_PREFIX);
1735
1736         LYXERR(Debug::KEY, " Key [action=" << func.action() << "]["
1737                 << d->keyseq.print(KeySequence::Portable) << ']');
1738
1739         // already here we know if it any point in going further
1740         // why not return already here if action == -1 and
1741         // num_bytes == 0? (Lgb)
1742
1743         if (d->keyseq.length() > 1)
1744                 current_view_->message(d->keyseq.print(KeySequence::ForGui));
1745
1746
1747         // Maybe user can only reach the key via holding down shift.
1748         // Let's see. But only if shift is the only modifier
1749         if (func.action() == LFUN_UNKNOWN_ACTION && state == ShiftModifier) {
1750                 LYXERR(Debug::KEY, "Trying without shift");
1751                 func = d->keyseq.addkey(keysym, NoModifier);
1752                 LYXERR(Debug::KEY, "Action now " << func.action());
1753         }
1754
1755         if (func.action() == LFUN_UNKNOWN_ACTION) {
1756                 // Hmm, we didn't match any of the keysequences. See
1757                 // if it's normal insertable text not already covered
1758                 // by a binding
1759                 if (keysym.isText() && d->keyseq.length() == 1) {
1760                         LYXERR(Debug::KEY, "isText() is true, inserting.");
1761                         func = FuncRequest(LFUN_SELF_INSERT,
1762                                            FuncRequest::KEYBOARD);
1763                 } else {
1764                         LYXERR(Debug::KEY, "Unknown, !isText() - giving up");
1765                         current_view_->message(_("Unknown function."));
1766                         current_view_->restartCursor();
1767                         return;
1768                 }
1769         }
1770
1771         if (func.action() == LFUN_SELF_INSERT) {
1772                 if (encoded_last_key != 0) {
1773                         docstring const arg(1, encoded_last_key);
1774                         lyx::dispatch(FuncRequest(LFUN_SELF_INSERT, arg,
1775                                              FuncRequest::KEYBOARD));
1776                         LYXERR(Debug::KEY, "SelfInsert arg[`" << to_utf8(arg) << "']");
1777                 }
1778         } else
1779                 lyx::dispatch(func);
1780 }
1781
1782
1783 void GuiApplication::dispatchDelayed(FuncRequest const & func)
1784 {
1785         d->func_request_queue_.push(func);
1786         QTimer::singleShot(0, this, SLOT(processFuncRequestQueue()));
1787 }
1788
1789
1790 void GuiApplication::resetGui()
1791 {
1792         // Set the language defined by the user.
1793         setGuiLanguage();
1794
1795         // Read menus
1796         if (!readUIFile(toqstr(lyxrc.ui_file)))
1797                 // Gives some error box here.
1798                 return;
1799
1800         if (d->global_menubar_)
1801                 d->menus_.fillMenuBar(d->global_menubar_, 0, false);
1802
1803         QHash<int, GuiView *>::iterator it;
1804         for (it = d->views_.begin(); it != d->views_.end(); ++it) {
1805                 GuiView * gv = *it;
1806                 setCurrentView(gv);
1807                 gv->setLayoutDirection(layoutDirection());
1808                 gv->resetDialogs();
1809         }
1810
1811         lyx::dispatch(FuncRequest(LFUN_SCREEN_FONT_UPDATE));
1812 }
1813
1814
1815 void GuiApplication::createView(int view_id)
1816 {
1817         createView(QString(), true, view_id);
1818 }
1819
1820
1821 void GuiApplication::createView(QString const & geometry_arg, bool autoShow,
1822         int view_id)
1823 {
1824         // release the keyboard which might have been grabed by the global
1825         // menubar on Mac to catch shortcuts even without any GuiView.
1826         if (d->global_menubar_)
1827                 d->global_menubar_->releaseKeyboard();
1828
1829         // create new view
1830         int id = view_id;
1831         while (d->views_.find(id) != d->views_.end())
1832                 id++;
1833
1834         LYXERR(Debug::GUI, "About to create new window with ID " << id);
1835         GuiView * view = new GuiView(id);
1836         // register view
1837         d->views_[id] = view;
1838
1839         if (autoShow) {
1840                 view->show();
1841                 setActiveWindow(view);
1842         }
1843
1844         if (!geometry_arg.isEmpty()) {
1845 #ifdef Q_WS_WIN
1846                 int x, y;
1847                 int w, h;
1848                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
1849                 re.indexIn(geometry_arg);
1850                 w = re.cap(1).toInt();
1851                 h = re.cap(2).toInt();
1852                 x = re.cap(3).toInt();
1853                 y = re.cap(4).toInt();
1854                 view->setGeometry(x, y, w, h);
1855 #endif
1856         }
1857         view->setFocus();
1858 }
1859
1860
1861 Clipboard & GuiApplication::clipboard()
1862 {
1863         return d->clipboard_;
1864 }
1865
1866
1867 Selection & GuiApplication::selection()
1868 {
1869         return d->selection_;
1870 }
1871
1872
1873 FontLoader & GuiApplication::fontLoader()
1874 {
1875         return d->font_loader_;
1876 }
1877
1878
1879 Toolbars const & GuiApplication::toolbars() const
1880 {
1881         return d->toolbars_;
1882 }
1883
1884
1885 Toolbars & GuiApplication::toolbars()
1886 {
1887         return d->toolbars_;
1888 }
1889
1890
1891 Menus const & GuiApplication::menus() const
1892 {
1893         return d->menus_;
1894 }
1895
1896
1897 Menus & GuiApplication::menus()
1898 {
1899         return d->menus_;
1900 }
1901
1902
1903 QList<int> GuiApplication::viewIds() const
1904 {
1905         return d->views_.keys();
1906 }
1907
1908
1909 ColorCache & GuiApplication::colorCache()
1910 {
1911         return d->color_cache_;
1912 }
1913
1914
1915 int GuiApplication::exec()
1916 {
1917         // asynchronously handle batch commands. This event will be in
1918         // the event queue in front of other asynchronous events. Hence,
1919         // we can assume in the latter that the gui is setup already.
1920         QTimer::singleShot(0, this, SLOT(execBatchCommands()));
1921
1922         return QApplication::exec();
1923 }
1924
1925
1926 void GuiApplication::exit(int status)
1927 {
1928         QApplication::exit(status);
1929 }
1930
1931
1932 void GuiApplication::setGuiLanguage()
1933 {
1934         // Set the language defined by the user.
1935         setRcGuiLanguage();
1936
1937         QString const default_language = toqstr(Messages::defaultLanguage());
1938         LYXERR(Debug::LOCALE, "Trying to set default locale to: " << default_language);
1939         QLocale const default_locale(default_language);
1940         QLocale::setDefault(default_locale);
1941
1942         // install translation file for Qt built-in dialogs
1943         QString const language_name = QString("qt_") + default_locale.name();
1944
1945         // language_name can be short (e.g. qt_zh) or long (e.g. qt_zh_CN).
1946         // Short-named translator can be loaded from a long name, but not the
1947         // opposite. Therefore, long name should be used without truncation.
1948         // c.f. http://doc.trolltech.com/4.1/qtranslator.html#load
1949         if (!d->qt_trans_.load(language_name,
1950                         QLibraryInfo::location(QLibraryInfo::TranslationsPath))) {
1951                 LYXERR(Debug::LOCALE, "Could not find Qt translations for locale "
1952                         << language_name);
1953         } else {
1954                 LYXERR(Debug::LOCALE, "Successfully installed Qt translations for locale "
1955                         << language_name);
1956         }
1957
1958         switch (default_locale.language()) {
1959         case QLocale::Arabic :
1960         case QLocale::Hebrew :
1961         case QLocale::Persian :
1962         case QLocale::Urdu :
1963                 setLayoutDirection(Qt::RightToLeft);
1964                 break;
1965         default:
1966                 setLayoutDirection(Qt::LeftToRight);
1967         }
1968 }
1969
1970
1971 void GuiApplication::processFuncRequestQueue()
1972 {
1973         while (!d->func_request_queue_.empty()) {
1974                 lyx::dispatch(d->func_request_queue_.back());
1975                 d->func_request_queue_.pop();
1976         }
1977 }
1978
1979
1980 void GuiApplication::execBatchCommands()
1981 {
1982         setGuiLanguage();
1983
1984         // Read menus
1985         if (!readUIFile(toqstr(lyxrc.ui_file)))
1986                 // Gives some error box here.
1987                 return;
1988
1989 #ifdef Q_WS_MACX
1990 #if QT_VERSION > 0x040600
1991         setAttribute(Qt::AA_MacDontSwapCtrlAndMeta,lyxrc.mac_dontswap_ctrl_meta);
1992 #endif
1993         // Create the global default menubar which is shown for the dialogs
1994         // and if no GuiView is visible.
1995         // This must be done after the session was recovered to know the "last files".
1996         d->global_menubar_ = new GlobalMenuBar();
1997         d->menus_.fillMenuBar(d->global_menubar_, 0, true);
1998 #endif
1999
2000         lyx::execBatchCommands();
2001 }
2002
2003
2004 QAbstractItemModel * GuiApplication::languageModel()
2005 {
2006         if (d->language_model_)
2007                 return d->language_model_;
2008
2009         QStandardItemModel * lang_model = new QStandardItemModel(this);
2010         lang_model->insertColumns(0, 3);
2011         int current_row;
2012         QIcon speller(getPixmap("images/", "dialog-show_spellchecker", "png"));
2013         QIcon saurus(getPixmap("images/", "thesaurus-entry", "png"));
2014         Languages::const_iterator it = lyx::languages.begin();
2015         Languages::const_iterator end = lyx::languages.end();
2016         for (; it != end; ++it) {
2017                 current_row = lang_model->rowCount();
2018                 lang_model->insertRows(current_row, 1);
2019                 QModelIndex pl_item = lang_model->index(current_row, 0);
2020                 QModelIndex sp_item = lang_model->index(current_row, 1);
2021                 QModelIndex th_item = lang_model->index(current_row, 2);
2022                 lang_model->setData(pl_item, qt_(it->second.display()), Qt::DisplayRole);
2023                 lang_model->setData(pl_item, toqstr(it->second.lang()), Qt::UserRole);
2024                 lang_model->setData(sp_item, qt_(it->second.display()), Qt::DisplayRole);
2025                 lang_model->setData(sp_item, toqstr(it->second.lang()), Qt::UserRole);
2026                 if (theSpellChecker() && theSpellChecker()->hasDictionary(&it->second))
2027                         lang_model->setData(sp_item, speller, Qt::DecorationRole);
2028                 lang_model->setData(th_item, qt_(it->second.display()), Qt::DisplayRole);
2029                 lang_model->setData(th_item, toqstr(it->second.lang()), Qt::UserRole);
2030                 if (thesaurus.thesaurusInstalled(from_ascii(it->second.code())))
2031                         lang_model->setData(th_item, saurus, Qt::DecorationRole);
2032         }
2033         d->language_model_ = new QSortFilterProxyModel(this);
2034         d->language_model_->setSourceModel(lang_model);
2035 #if QT_VERSION >= 0x040300
2036         d->language_model_->setSortLocaleAware(true);
2037 #endif
2038         return d->language_model_;
2039 }
2040
2041
2042 void GuiApplication::restoreGuiSession()
2043 {
2044         if (!lyxrc.load_session)
2045                 return;
2046
2047         Session & session = theSession();
2048         LastOpenedSection::LastOpened const & lastopened =
2049                 session.lastOpened().getfiles();
2050
2051         FileName active_file;
2052         // do not add to the lastfile list since these files are restored from
2053         // last session, and should be already there (regular files), or should
2054         // not be added at all (help files).
2055         for (size_t i = 0; i < lastopened.size(); ++i) {
2056                 FileName const & file_name = lastopened[i].file_name;
2057                 if (d->views_.empty() || (!lyxrc.open_buffers_in_tabs
2058                           && current_view_->documentBufferView() != 0)) {
2059                         boost::crc_32_type crc;
2060                         string const & fname = file_name.absFileName();
2061                         crc = for_each(fname.begin(), fname.end(), crc);
2062                         createView(crc.checksum());
2063                 }
2064                 current_view_->loadDocument(file_name, false);
2065
2066                 if (lastopened[i].active)
2067                         active_file = file_name;
2068         }
2069
2070         // Restore last active buffer
2071         Buffer * buffer = theBufferList().getBuffer(active_file);
2072         if (buffer)
2073                 current_view_->setBuffer(buffer);
2074
2075         // clear this list to save a few bytes of RAM
2076         session.lastOpened().clear();
2077 }
2078
2079
2080 QString const GuiApplication::romanFontName()
2081 {
2082         QFont font;
2083         font.setKerning(false);
2084         font.setStyleHint(QFont::Serif);
2085         font.setFamily("serif");
2086
2087         return QFontInfo(font).family();
2088 }
2089
2090
2091 QString const GuiApplication::sansFontName()
2092 {
2093         QFont font;
2094         font.setKerning(false);
2095         font.setStyleHint(QFont::SansSerif);
2096         font.setFamily("sans");
2097
2098         return QFontInfo(font).family();
2099 }
2100
2101
2102 QString const GuiApplication::typewriterFontName()
2103 {
2104         QFont font;
2105         font.setKerning(false);
2106         font.setStyleHint(QFont::TypeWriter);
2107         font.setFamily("monospace");
2108
2109         return QFontInfo(font).family();
2110 }
2111
2112
2113 void GuiApplication::handleRegularEvents()
2114 {
2115         ForkedCallsController::handleCompletedProcesses();
2116 }
2117
2118
2119 bool GuiApplication::event(QEvent * e)
2120 {
2121         switch(e->type()) {
2122         case QEvent::FileOpen: {
2123                 // Open a file; this happens only on Mac OS X for now.
2124                 //
2125                 // We do this asynchronously because on startup the batch
2126                 // commands are not executed here yet and the gui is not ready
2127                 // therefore.
2128                 QFileOpenEvent * foe = static_cast<QFileOpenEvent *>(e);
2129                 dispatchDelayed(FuncRequest(LFUN_FILE_OPEN, qstring_to_ucs4(foe->file())));
2130                 e->accept();
2131                 return true;
2132         }
2133         default:
2134                 return QApplication::event(e);
2135         }
2136 }
2137
2138
2139 bool GuiApplication::notify(QObject * receiver, QEvent * event)
2140 {
2141         try {
2142                 return QApplication::notify(receiver, event);
2143         }
2144         catch (ExceptionMessage const & e) {
2145                 switch(e.type_) {
2146                 case ErrorException:
2147                         emergencyCleanup();
2148                         setQuitOnLastWindowClosed(false);
2149                         closeAllViews();
2150                         Alert::error(e.title_, e.details_);
2151 #ifndef NDEBUG
2152                         // Properly crash in debug mode in order to get a useful backtrace.
2153                         abort();
2154 #endif
2155                         // In release mode, try to exit gracefully.
2156                         this->exit(1);
2157
2158                 case BufferException: {
2159                         if (!current_view_->documentBufferView())
2160                                 return false;
2161                         Buffer * buf = &current_view_->documentBufferView()->buffer();
2162                         docstring details = e.details_ + '\n';
2163                         details += buf->emergencyWrite();
2164                         theBufferList().release(buf);
2165                         details += "\n" + _("The current document was closed.");
2166                         Alert::error(e.title_, details);
2167                         return false;
2168                 }
2169                 case WarningException:
2170                         Alert::warning(e.title_, e.details_);
2171                         return false;
2172                 }
2173         }
2174         catch (exception const & e) {
2175                 docstring s = _("LyX has caught an exception, it will now "
2176                         "attempt to save all unsaved documents and exit."
2177                         "\n\nException: ");
2178                 s += from_ascii(e.what());
2179                 Alert::error(_("Software exception Detected"), s);
2180                 lyx_exit(1);
2181         }
2182         catch (...) {
2183                 docstring s = _("LyX has caught some really weird exception, it will "
2184                         "now attempt to save all unsaved documents and exit.");
2185                 Alert::error(_("Software exception Detected"), s);
2186                 lyx_exit(1);
2187         }
2188
2189         return false;
2190 }
2191
2192
2193 bool GuiApplication::getRgbColor(ColorCode col, RGBColor & rgbcol)
2194 {
2195         QColor const & qcol = d->color_cache_.get(col);
2196         if (!qcol.isValid()) {
2197                 rgbcol.r = 0;
2198                 rgbcol.g = 0;
2199                 rgbcol.b = 0;
2200                 return false;
2201         }
2202         rgbcol.r = qcol.red();
2203         rgbcol.g = qcol.green();
2204         rgbcol.b = qcol.blue();
2205         return true;
2206 }
2207
2208
2209 string const GuiApplication::hexName(ColorCode col)
2210 {
2211         return ltrim(fromqstr(d->color_cache_.get(col).name()), "#");
2212 }
2213
2214
2215 void GuiApplication::registerSocketCallback(int fd, SocketCallback func)
2216 {
2217         SocketNotifier * sn = new SocketNotifier(this, fd, func);
2218         d->socket_notifiers_[fd] = sn;
2219         connect(sn, SIGNAL(activated(int)), this, SLOT(socketDataReceived(int)));
2220 }
2221
2222
2223 void GuiApplication::socketDataReceived(int fd)
2224 {
2225         d->socket_notifiers_[fd]->func_();
2226 }
2227
2228
2229 void GuiApplication::unregisterSocketCallback(int fd)
2230 {
2231         d->socket_notifiers_.take(fd)->setEnabled(false);
2232 }
2233
2234
2235 void GuiApplication::commitData(QSessionManager & sm)
2236 {
2237         /// The implementation is required to avoid an application exit
2238         /// when session state save is triggered by session manager.
2239         /// The default implementation sends a close event to all
2240         /// visible top level widgets when session managment allows
2241         /// interaction.
2242         /// We are changing that to close all wiew one by one.
2243         /// FIXME: verify if the default implementation is enough now.
2244         if (sm.allowsInteraction() && !closeAllViews())
2245                 sm.cancel();
2246 }
2247
2248
2249 void GuiApplication::unregisterView(GuiView * gv)
2250 {
2251         LASSERT(d->views_[gv->id()] == gv, /**/);
2252         d->views_.remove(gv->id());
2253         if (current_view_ == gv)
2254                 current_view_ = 0;
2255 }
2256
2257
2258 bool GuiApplication::closeAllViews()
2259 {
2260         if (d->views_.empty())
2261                 return true;
2262
2263         // When a view/window was closed before without quitting LyX, there
2264         // are already entries in the lastOpened list.
2265         theSession().lastOpened().clear();
2266
2267         QList<GuiView *> views = d->views_.values();
2268         foreach (GuiView * view, views) {
2269                 if (!view->closeScheduled())
2270                         return false;
2271         }
2272
2273         d->views_.clear();
2274         return true;
2275 }
2276
2277
2278 GuiView & GuiApplication::view(int id) const
2279 {
2280         LASSERT(d->views_.contains(id), /**/);
2281         return *d->views_.value(id);
2282 }
2283
2284
2285 void GuiApplication::hideDialogs(string const & name, Inset * inset) const
2286 {
2287         QList<GuiView *> views = d->views_.values();
2288         foreach (GuiView * view, views)
2289                 view->hideDialog(name, inset);
2290 }
2291
2292
2293 Buffer const * GuiApplication::updateInset(Inset const * inset) const
2294 {
2295         Buffer const * buffer_ = 0;
2296         QHash<int, GuiView *>::iterator end = d->views_.end();
2297         for (QHash<int, GuiView *>::iterator it = d->views_.begin(); it != end; ++it) {
2298                 if (Buffer const * ptr = (*it)->updateInset(inset))
2299                         buffer_ = ptr;
2300         }
2301         return buffer_;
2302 }
2303
2304
2305 bool GuiApplication::searchMenu(FuncRequest const & func,
2306         docstring_list & names) const
2307 {
2308         return d->menus_.searchMenu(func, names);
2309 }
2310
2311
2312 bool GuiApplication::readUIFile(QString const & name, bool include)
2313 {
2314         LYXERR(Debug::INIT, "About to read " << name << "...");
2315
2316         FileName ui_path;
2317         if (include) {
2318                 ui_path = libFileSearch("ui", name, "inc");
2319                 if (ui_path.empty())
2320                         ui_path = libFileSearch("ui", changeExtension(name, "inc"));
2321         } else {
2322                 ui_path = libFileSearch("ui", name, "ui");
2323         }
2324
2325         if (ui_path.empty()) {
2326                 static const QString defaultUIFile = "default";
2327                 LYXERR(Debug::INIT, "Could not find " << name);
2328                 if (include) {
2329                         Alert::warning(_("Could not find UI definition file"),
2330                                 bformat(_("Error while reading the included file\n%1$s\n"
2331                                         "Please check your installation."), qstring_to_ucs4(name)));
2332                         return false;
2333                 }
2334                 if (name == defaultUIFile) {
2335                         LYXERR(Debug::INIT, "Could not find default UI file!!");
2336                         Alert::warning(_("Could not find default UI file"),
2337                                 _("LyX could not find the default UI file!\n"
2338                                   "Please check your installation."));
2339                         return false;
2340                 }
2341                 Alert::warning(_("Could not find UI definition file"),
2342                 bformat(_("Error while reading the configuration file\n%1$s\n"
2343                         "Falling back to default.\n"
2344                         "Please look under Tools>Preferences>User Interface and\n"
2345                         "check which User Interface file you are using."), qstring_to_ucs4(name)));
2346                 return readUIFile(defaultUIFile, false);
2347         }
2348
2349         // Ensure that a file is read only once (prevents include loops)
2350         static QStringList uifiles;
2351         QString const uifile = toqstr(ui_path.absFileName());
2352         if (uifiles.contains(uifile)) {
2353                 if (!include) {
2354                         // We are reading again the top uifile so reset the safeguard:
2355                         uifiles.clear();
2356                         d->menus_.reset();
2357                         d->toolbars_.reset();
2358                 } else {
2359                         LYXERR(Debug::INIT, "UI file '" << name << "' has been read already. "
2360                                 << "Is this an include loop?");
2361                         return false;
2362                 }
2363         }
2364         uifiles.push_back(uifile);
2365
2366         LYXERR(Debug::INIT, "Found " << name << " in " << ui_path);
2367
2368         enum {
2369                 ui_menuset = 1,
2370                 ui_toolbars,
2371                 ui_toolbarset,
2372                 ui_include,
2373                 ui_last
2374         };
2375
2376         LexerKeyword uitags[] = {
2377                 { "include", ui_include },
2378                 { "menuset", ui_menuset },
2379                 { "toolbars", ui_toolbars },
2380                 { "toolbarset", ui_toolbarset }
2381         };
2382
2383         Lexer lex(uitags);
2384         lex.setFile(ui_path);
2385         if (!lex.isOK()) {
2386                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
2387                        << endl;
2388         }
2389
2390         if (lyxerr.debugging(Debug::PARSER))
2391                 lex.printTable(lyxerr);
2392
2393         // store which ui files define Toolbars
2394         static QStringList toolbar_uifiles;
2395
2396         while (lex.isOK()) {
2397                 switch (lex.lex()) {
2398                 case ui_include: {
2399                         lex.next(true);
2400                         QString const file = toqstr(lex.getString());
2401                         if (!readUIFile(file, true))
2402                                 return false;
2403                         break;
2404                 }
2405                 case ui_menuset:
2406                         d->menus_.read(lex);
2407                         break;
2408
2409                 case ui_toolbarset:
2410                         d->toolbars_.readToolbars(lex);
2411                         break;
2412
2413                 case ui_toolbars:
2414                         d->toolbars_.readToolbarSettings(lex);
2415                         toolbar_uifiles.push_back(uifile);
2416                         break;
2417
2418                 default:
2419                         if (!rtrim(lex.getString()).empty())
2420                                 lex.printError("LyX::ReadUIFile: "
2421                                                "Unknown menu tag: `$$Token'");
2422                         break;
2423                 }
2424         }
2425
2426         if (include)
2427                 return true;
2428
2429         QSettings settings;
2430         settings.beginGroup("ui_files");
2431         bool touched = false;
2432         for (int i = 0; i != uifiles.size(); ++i) {
2433                 QFileInfo fi(uifiles[i]);
2434                 QDateTime const date_value = fi.lastModified();
2435                 QString const name_key = QString::number(i);
2436                 // if an ui file which defines Toolbars has changed,
2437                 // we have to reset the settings
2438                 if (toolbar_uifiles.contains(uifiles[i])
2439                  && (!settings.contains(name_key)
2440                  || settings.value(name_key).toString() != uifiles[i]
2441                  || settings.value(name_key + "/date").toDateTime() != date_value)) {
2442                         touched = true;
2443                         settings.setValue(name_key, uifiles[i]);
2444                         settings.setValue(name_key + "/date", date_value);
2445                 }
2446         }
2447         settings.endGroup();
2448         if (touched)
2449                 settings.remove("views");
2450
2451         return true;
2452 }
2453
2454
2455 void GuiApplication::onLastWindowClosed()
2456 {
2457         if (d->global_menubar_)
2458                 d->global_menubar_->grabKeyboard();
2459 }
2460
2461
2462 ////////////////////////////////////////////////////////////////////////
2463 //
2464 // X11 specific stuff goes here...
2465
2466 #ifdef Q_WS_X11
2467 bool GuiApplication::x11EventFilter(XEvent * xev)
2468 {
2469         if (!current_view_)
2470                 return false;
2471
2472         switch (xev->type) {
2473         case SelectionRequest: {
2474                 if (xev->xselectionrequest.selection != XA_PRIMARY)
2475                         break;
2476                 LYXERR(Debug::SELECTION, "X requested selection.");
2477                 BufferView * bv = current_view_->currentBufferView();
2478                 if (bv) {
2479                         docstring const sel = bv->requestSelection();
2480                         if (!sel.empty())
2481                                 d->selection_.put(sel);
2482                 }
2483                 break;
2484         }
2485         case SelectionClear: {
2486                 if (xev->xselectionclear.selection != XA_PRIMARY)
2487                         break;
2488                 LYXERR(Debug::SELECTION, "Lost selection.");
2489                 BufferView * bv = current_view_->currentBufferView();
2490                 if (bv)
2491                         bv->clearSelection();
2492                 break;
2493         }
2494         }
2495         return false;
2496 }
2497 #endif
2498
2499 } // namespace frontend
2500
2501
2502 void hideDialogs(std::string const & name, Inset * inset)
2503 {
2504         if (theApp())
2505                 frontend::guiApp->hideDialogs(name, inset);
2506 }
2507
2508
2509 ////////////////////////////////////////////////////////////////////
2510 //
2511 // Font stuff
2512 //
2513 ////////////////////////////////////////////////////////////////////
2514
2515 frontend::FontLoader & theFontLoader()
2516 {
2517         LASSERT(frontend::guiApp, /**/);
2518         return frontend::guiApp->fontLoader();
2519 }
2520
2521
2522 frontend::FontMetrics const & theFontMetrics(Font const & f)
2523 {
2524         return theFontMetrics(f.fontInfo());
2525 }
2526
2527
2528 frontend::FontMetrics const & theFontMetrics(FontInfo const & f)
2529 {
2530         LASSERT(frontend::guiApp, /**/);
2531         return frontend::guiApp->fontLoader().metrics(f);
2532 }
2533
2534
2535 ////////////////////////////////////////////////////////////////////
2536 //
2537 // Misc stuff
2538 //
2539 ////////////////////////////////////////////////////////////////////
2540
2541 frontend::Clipboard & theClipboard()
2542 {
2543         LASSERT(frontend::guiApp, /**/);
2544         return frontend::guiApp->clipboard();
2545 }
2546
2547
2548 frontend::Selection & theSelection()
2549 {
2550         LASSERT(frontend::guiApp, /**/);
2551         return frontend::guiApp->selection();
2552 }
2553
2554
2555 } // namespace lyx
2556
2557 #include "moc_GuiApplication.cpp"