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 Application::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                 Cursor & cursor = bv->cursor();
1104                 Buffer & buf = bv->buffer();
1105
1106                 // FIXME
1107                 // This check out to be done somewhere else. It got moved here
1108                 // from TextMetrics.cpp, where it definitely didn't need to be.
1109                 // Actually, this test ought not to be done at all, since the
1110                 // whole InsetBibitem business is a mess. But that is a different
1111                 // story.
1112                 int moveCursor = 0;
1113                 if (cursor.inTexted()) {
1114                         moveCursor = cursor.paragraph().checkBiblio(buf);
1115                         if (moveCursor > 0)
1116                                 cursor.posForward();
1117                         else if (moveCursor < 0 && cursor.pos() >= -moveCursor)
1118                                 cursor.posBackward();
1119                 }
1120                 if (moveCursor != 0 || dr.needBufferUpdate()) {
1121                         cursor.clearBufferUpdate();
1122                         buf.updateBuffer();
1123                 }
1124                 // BufferView::update() updates the ViewMetricsInfo and
1125                 // also initializes the position cache for all insets in
1126                 // (at least partially) visible top-level paragraphs.
1127                 // We will redraw the screen only if needed.
1128                 bv->processUpdateFlags(dr.screenUpdate());
1129
1130                 // Do we have a selection?
1131                 theSelection().haveSelection(bv->cursor().selection());
1132
1133                 // update gui
1134                 current_view_->restartCursor();
1135         }
1136         if (dr.needMessageUpdate()) {
1137                 // Some messages may already be translated, so we cannot use _()
1138                 current_view_->message(makeDispatchMessage(
1139                                 translateIfPossible(dr.message()), cmd));
1140         }
1141 }
1142
1143
1144 void GuiApplication::gotoBookmark(unsigned int idx, bool openFile,
1145         bool switchToBuffer)
1146 {
1147         if (!theSession().bookmarks().isValid(idx))
1148                 return;
1149         BookmarksSection::Bookmark const & bm =
1150                 theSession().bookmarks().bookmark(idx);
1151         LASSERT(!bm.filename.empty(), /**/);
1152         string const file = bm.filename.absFileName();
1153         // if the file is not opened, open it.
1154         if (!theBufferList().exists(bm.filename)) {
1155                 if (openFile)
1156                         dispatch(FuncRequest(LFUN_FILE_OPEN, file));
1157                 else
1158                         return;
1159         }
1160         // open may fail, so we need to test it again
1161         if (!theBufferList().exists(bm.filename))
1162                 return;
1163
1164         // bm can be changed when saving
1165         BookmarksSection::Bookmark tmp = bm;
1166
1167         // Special case idx == 0 used for back-from-back jump navigation
1168         if (idx == 0)
1169                 dispatch(FuncRequest(LFUN_BOOKMARK_SAVE, "0"));
1170
1171         // if the current buffer is not that one, switch to it.
1172         BufferView * doc_bv = current_view_->documentBufferView();
1173         if (!doc_bv || doc_bv->buffer().fileName() != tmp.filename) {
1174                 if (switchToBuffer) {
1175                         dispatch(FuncRequest(LFUN_BUFFER_SWITCH, file));
1176                         doc_bv = current_view_->documentBufferView();
1177                 } else
1178                         return;
1179         }
1180
1181         // moveToPosition try paragraph id first and then paragraph (pit, pos).
1182         if (!doc_bv->moveToPosition(
1183                         tmp.bottom_pit, tmp.bottom_pos, tmp.top_id, tmp.top_pos))
1184                 return;
1185
1186         // bm changed
1187         if (idx == 0)
1188                 return;
1189
1190         // Cursor jump succeeded!
1191         Cursor const & cur = doc_bv->cursor();
1192         pit_type new_pit = cur.pit();
1193         pos_type new_pos = cur.pos();
1194         int new_id = cur.paragraph().id();
1195
1196         // if bottom_pit, bottom_pos or top_id has been changed, update bookmark
1197         // see http://www.lyx.org/trac/ticket/3092
1198         if (bm.bottom_pit != new_pit || bm.bottom_pos != new_pos
1199                 || bm.top_id != new_id) {
1200                 const_cast<BookmarksSection::Bookmark &>(bm).updatePos(
1201                         new_pit, new_pos, new_id);
1202         }
1203 }
1204
1205 // This function runs "configure" and then rereads lyx.defaults to
1206 // reconfigure the automatic settings.
1207 void GuiApplication::reconfigure(string const & option)
1208 {
1209         // emit message signal.
1210         if (current_view_)
1211                 current_view_->message(_("Running configure..."));
1212
1213         // Run configure in user lyx directory
1214         PathChanger p(package().user_support());
1215         string configure_command = package().configure_command();
1216         configure_command += option;
1217         Systemcall one;
1218         int ret = one.startscript(Systemcall::Wait, configure_command);
1219         p.pop();
1220         // emit message signal.
1221         if (current_view_)
1222                 current_view_->message(_("Reloading configuration..."));
1223         lyxrc.read(libFileSearch(QString(), "lyxrc.defaults"), false);
1224         // Re-read packages.lst
1225         LaTeXFeatures::getAvailable();
1226
1227         if (ret)
1228                 Alert::information(_("System reconfiguration failed"),
1229                            _("The system reconfiguration has failed.\n"
1230                                   "Default textclass is used but LyX may "
1231                                   "not be able to work properly.\n"
1232                                   "Please reconfigure again if needed."));
1233         else
1234                 Alert::information(_("System reconfigured"),
1235                            _("The system has been reconfigured.\n"
1236                              "You need to restart LyX to make use of any\n"
1237                              "updated document class specifications."));
1238 }
1239
1240 void GuiApplication::validateCurrentView()
1241 {
1242         if (!d->views_.empty() && !current_view_) {
1243                 // currently at least one view exists but no view has the focus.
1244                 // choose the last view to make it current.
1245                 // a view without any open document is preferred.
1246                 GuiView * candidate = 0;
1247                 QHash<int, GuiView *>::const_iterator it = d->views_.begin();
1248                 QHash<int, GuiView *>::const_iterator end = d->views_.end();
1249                 for (; it != end; ++it) {
1250                         candidate = *it;
1251                         if (!candidate->documentBufferView())
1252                                 break;
1253                 }
1254                 setCurrentView(candidate);
1255         }
1256 }
1257
1258 void GuiApplication::dispatch(FuncRequest const & cmd, DispatchResult & dr)
1259 {
1260         string const argument = to_utf8(cmd.argument());
1261         FuncCode const action = cmd.action();
1262
1263         LYXERR(Debug::ACTION, "cmd: " << cmd);
1264
1265         // we have not done anything wrong yet.
1266         dr.setError(false);
1267
1268         FuncStatus const flag = getStatus(cmd);
1269         if (!flag.enabled()) {
1270                 // We cannot use this function here
1271                 LYXERR(Debug::ACTION, "action "
1272                        << lyxaction.getActionName(action)
1273                        << " [" << action << "] is disabled at this location");
1274                 dr.setMessage(flag.message());
1275                 dr.setError(true);
1276                 dr.dispatched(false);
1277                 dr.screenUpdate(Update::None);
1278                 dr.clearBufferUpdate();
1279                 return;
1280         };
1281
1282         // Assumes that the action will be dispatched.
1283         dr.dispatched(true);
1284
1285         switch (cmd.action()) {
1286
1287         case LFUN_WINDOW_NEW:
1288                 createView(toqstr(cmd.argument()));
1289                 break;
1290
1291         case LFUN_WINDOW_CLOSE:
1292                 // update bookmark pit of the current buffer before window close
1293                 for (size_t i = 0; i < theSession().bookmarks().size(); ++i)
1294                         gotoBookmark(i+1, false, false);
1295                 // clear the last opened list, because
1296                 // maybe this will end the session
1297                 theSession().lastOpened().clear();
1298                 current_view_->closeScheduled();
1299                 break;
1300
1301         case LFUN_LYX_QUIT:
1302                 // quitting is triggered by the gui code
1303                 // (leaving the event loop).
1304                 if (current_view_)
1305                         current_view_->message(from_utf8(N_("Exiting.")));
1306                 if (closeAllViews())
1307                         quit();
1308                 break;
1309
1310         case LFUN_SCREEN_FONT_UPDATE: {
1311                 // handle the screen font changes.
1312                 d->font_loader_.update();
1313                 // Backup current_view_
1314                 GuiView * view = current_view_;
1315                 // Set current_view_ to zero to forbid GuiWorkArea::redraw()
1316                 // to skip the refresh.
1317                 current_view_ = 0;
1318                 theBufferList().changed(false);
1319                 // Restore current_view_
1320                 current_view_ = view;
1321                 break;
1322         }
1323
1324         case LFUN_BUFFER_NEW:
1325                 validateCurrentView();
1326                 if (d->views_.empty()
1327                    || (!lyxrc.open_buffers_in_tabs && current_view_->documentBufferView() != 0)) {
1328                         createView(QString(), false); // keep hidden
1329                         current_view_->newDocument(to_utf8(cmd.argument()), false);
1330                         current_view_->show();
1331                         setActiveWindow(current_view_);
1332                 } else {
1333                         current_view_->newDocument(to_utf8(cmd.argument()), false);
1334                 }
1335                 break;
1336
1337         case LFUN_BUFFER_NEW_TEMPLATE:
1338                 validateCurrentView();
1339                 if (d->views_.empty()
1340                    || (!lyxrc.open_buffers_in_tabs && current_view_->documentBufferView() != 0)) {
1341                         createView();
1342                         current_view_->newDocument(to_utf8(cmd.argument()), true);
1343                         if (!current_view_->documentBufferView())
1344                                 current_view_->close();
1345                 } else {
1346                         current_view_->newDocument(to_utf8(cmd.argument()), true);
1347                 }
1348                 break;
1349
1350         case LFUN_FILE_OPEN: {
1351                 validateCurrentView();
1352                 // FIXME: create a new method shared with LFUN_HELP_OPEN.
1353                 string const fname = to_utf8(cmd.argument());
1354                 if (d->views_.empty() || (!lyxrc.open_buffers_in_tabs
1355                           && current_view_->documentBufferView() != 0)) {
1356                         // We want the ui session to be saved per document and not per
1357                         // window number. The filename crc is a good enough identifier.
1358                         boost::crc_32_type crc;
1359                         crc = for_each(fname.begin(), fname.end(), crc);
1360                         createView(crc.checksum());
1361                         current_view_->openDocument(fname);
1362                         if (current_view_ && !current_view_->documentBufferView())
1363                                 current_view_->close();
1364                 } else
1365                         current_view_->openDocument(fname);
1366                 break;
1367         }
1368
1369         case LFUN_HELP_OPEN: {
1370                 // FIXME: create a new method shared with LFUN_FILE_OPEN.
1371                 if (current_view_ == 0)
1372                         createView();
1373                 string const arg = to_utf8(cmd.argument());
1374                 if (arg.empty()) {
1375                         current_view_->message(_("Missing argument"));
1376                         break;
1377                 }
1378                 FileName fname = i18nLibFileSearch("doc", arg, "lyx");
1379                 if (fname.empty())
1380                         fname = i18nLibFileSearch("examples", arg, "lyx");
1381
1382                 if (fname.empty()) {
1383                         lyxerr << "LyX: unable to find documentation file `"
1384                                << arg << "'. Bad installation?" << endl;
1385                         break;
1386                 }
1387                 current_view_->message(bformat(_("Opening help file %1$s..."),
1388                                                makeDisplayPath(fname.absFileName())));
1389                 Buffer * buf = current_view_->loadDocument(fname, false);
1390
1391 #ifndef DEVEL_VERSION
1392                 if (buf)
1393                         buf->setReadonly(true);
1394 #else
1395                 (void) buf;
1396 #endif
1397                 break;
1398         }
1399
1400         case LFUN_SET_COLOR: {
1401                 string lyx_name;
1402                 string const x11_name = split(to_utf8(cmd.argument()), lyx_name, ' ');
1403                 if (lyx_name.empty() || x11_name.empty()) {
1404                         if (current_view_)
1405                                 current_view_->message(
1406                                         _("Syntax: set-color <lyx_name> <x11_name>"));
1407                         break;
1408                 }
1409
1410                 string const graphicsbg = lcolor.getLyXName(Color_graphicsbg);
1411                 bool const graphicsbg_changed =
1412                                 lyx_name == graphicsbg && x11_name != graphicsbg;
1413                 if (graphicsbg_changed) {
1414                         // FIXME: The graphics cache no longer has a changeDisplay method.
1415 #if 0
1416                         graphics::GCache::get().changeDisplay(true);
1417 #endif
1418                 }
1419
1420                 if (!lcolor.setColor(lyx_name, x11_name)) {
1421                         current_view_->message(
1422                                 bformat(_("Set-color \"%1$s\" failed "
1423                                         "- color is undefined or "
1424                                         "may not be redefined"),
1425                                         from_utf8(lyx_name)));
1426                         break;
1427                 }
1428                 // Make sure we don't keep old colors in cache.
1429                 d->color_cache_.clear();
1430                 break;
1431         }
1432
1433         case LFUN_LYXRC_APPLY: {
1434                 // reset active key sequences, since the bindings
1435                 // are updated (bug 6064)
1436                 d->keyseq.reset();
1437                 LyXRC const lyxrc_orig = lyxrc;
1438
1439                 istringstream ss(to_utf8(cmd.argument()));
1440                 bool const success = lyxrc.read(ss);
1441
1442                 if (!success) {
1443                         lyxerr << "Warning in LFUN_LYXRC_APPLY!\n"
1444                                         << "Unable to read lyxrc data"
1445                                         << endl;
1446                         break;
1447                 }
1448
1449                 actOnUpdatedPrefs(lyxrc_orig, lyxrc);
1450                 setSpellChecker();
1451                 resetGui();
1452
1453                 break;
1454         }
1455
1456         case LFUN_COMMAND_PREFIX:
1457                 dispatch(FuncRequest(LFUN_MESSAGE, d->keyseq.printOptions(true)));
1458                 break;
1459
1460         case LFUN_CANCEL: {
1461                 d->keyseq.reset();
1462                 d->meta_fake_bit = NoModifier;
1463                 GuiView * gv = currentView();
1464                 if (gv && gv->currentBufferView())
1465                         // cancel any selection
1466                         processFuncRequest(FuncRequest(LFUN_MARK_OFF));
1467                 dr.setMessage(from_ascii(N_("Cancel")));
1468                 break;
1469         }
1470         case LFUN_META_PREFIX:
1471                 d->meta_fake_bit = AltModifier;
1472                 dr.setMessage(d->keyseq.print(KeySequence::ForGui));
1473                 break;
1474
1475         // --- Menus -----------------------------------------------
1476         case LFUN_RECONFIGURE:
1477                 // argument is any additional parameter to the configure.py command
1478                 reconfigure(to_utf8(cmd.argument()));
1479                 break;
1480
1481         // --- lyxserver commands ----------------------------
1482         case LFUN_SERVER_GET_FILENAME: {
1483                 LASSERT(current_view_ && current_view_->documentBufferView(), return);
1484                 docstring const fname = from_utf8(
1485                                 current_view_->documentBufferView()->buffer().absFileName());
1486                 dr.setMessage(fname);
1487                 LYXERR(Debug::INFO, "FNAME[" << fname << ']');
1488                 break;
1489         }
1490         case LFUN_SERVER_NOTIFY: {
1491                 docstring const dispatch_buffer = d->keyseq.print(KeySequence::Portable);
1492                 dr.setMessage(dispatch_buffer);
1493                 theServer().notifyClient(to_utf8(dispatch_buffer));
1494                 break;
1495         }
1496
1497         case LFUN_CURSOR_FOLLOWS_SCROLLBAR_TOGGLE:
1498                 lyxrc.cursor_follows_scrollbar = !lyxrc.cursor_follows_scrollbar;
1499                 break;
1500
1501         case LFUN_REPEAT: {
1502                 // repeat command
1503                 string countstr;
1504                 string rest = split(argument, countstr, ' ');
1505                 istringstream is(countstr);
1506                 int count = 0;
1507                 is >> count;
1508                 //lyxerr << "repeat: count: " << count << " cmd: " << rest << endl;
1509                 for (int i = 0; i < count; ++i)
1510                         dispatch(lyxaction.lookupFunc(rest));
1511                 break;
1512         }
1513
1514         case LFUN_COMMAND_SEQUENCE: {
1515                 // argument contains ';'-terminated commands
1516                 string arg = argument;
1517                 // FIXME: this LFUN should also work without any view.
1518                 Buffer * buffer = (current_view_ && current_view_->documentBufferView())
1519                                   ? &(current_view_->documentBufferView()->buffer()) : 0;
1520                 if (buffer)
1521                         buffer->undo().beginUndoGroup();
1522                 while (!arg.empty()) {
1523                         string first;
1524                         arg = split(arg, first, ';');
1525                         FuncRequest func(lyxaction.lookupFunc(first));
1526                         func.setOrigin(cmd.origin());
1527                         dispatch(func);
1528                 }
1529                 // the buffer may have been closed by one action
1530                 if (theBufferList().isLoaded(buffer))
1531                         buffer->undo().endUndoGroup();
1532                 break;
1533         }
1534
1535         case LFUN_COMMAND_ALTERNATIVES: {
1536                 // argument contains ';'-terminated commands
1537                 string arg = argument;
1538                 while (!arg.empty()) {
1539                         string first;
1540                         arg = split(arg, first, ';');
1541                         FuncRequest func(lyxaction.lookupFunc(first));
1542                         func.setOrigin(cmd.origin());
1543                         FuncStatus const stat = getStatus(func);
1544                         if (stat.enabled()) {
1545                                 dispatch(func);
1546                                 break;
1547                         }
1548                 }
1549                 break;
1550         }
1551
1552         case LFUN_CALL: {
1553                 FuncRequest func;
1554                 if (theTopLevelCmdDef().lock(argument, func)) {
1555                         func.setOrigin(cmd.origin());
1556                         dispatch(func);
1557                         theTopLevelCmdDef().release(argument);
1558                 } else {
1559                         if (func.action() == LFUN_UNKNOWN_ACTION) {
1560                                 // unknown command definition
1561                                 lyxerr << "Warning: unknown command definition `"
1562                                                 << argument << "'"
1563                                                 << endl;
1564                         } else {
1565                                 // recursion detected
1566                                 lyxerr << "Warning: Recursion in the command definition `"
1567                                                 << argument << "' detected"
1568                                                 << endl;
1569                         }
1570                 }
1571                 break;
1572         }
1573
1574         case LFUN_PREFERENCES_SAVE:
1575                 lyxrc.write(support::makeAbsPath("preferences",
1576                         package().user_support().absFileName()), false);
1577                 break;
1578
1579         case LFUN_BUFFER_SAVE_AS_DEFAULT: {
1580                 string const fname = addName(addPath(package().user_support().absFileName(),
1581                         "templates/"), "defaults.lyx");
1582                 Buffer defaults(fname);
1583
1584                 istringstream ss(argument);
1585                 Lexer lex;
1586                 lex.setStream(ss);
1587                 int const unknown_tokens = defaults.readHeader(lex);
1588
1589                 if (unknown_tokens != 0) {
1590                         lyxerr << "Warning in LFUN_BUFFER_SAVE_AS_DEFAULT!\n"
1591                                << unknown_tokens << " unknown token"
1592                                << (unknown_tokens == 1 ? "" : "s")
1593                                << endl;
1594                 }
1595
1596                 if (defaults.writeFile(FileName(defaults.absFileName())))
1597                         dr.setMessage(bformat(_("Document defaults saved in %1$s"),
1598                                               makeDisplayPath(fname)));
1599                 else {
1600                         dr.setError(true);
1601                         dr.setMessage(from_ascii(N_("Unable to save document defaults")));
1602                 }
1603                 break;
1604         }
1605
1606         case LFUN_BOOKMARK_GOTO:
1607                 // go to bookmark, open unopened file and switch to buffer if necessary
1608                 gotoBookmark(convert<unsigned int>(to_utf8(cmd.argument())), true, true);
1609                 dr.screenUpdate(Update::Force | Update::FitCursor);
1610                 break;
1611
1612         case LFUN_BOOKMARK_CLEAR:
1613                 theSession().bookmarks().clear();
1614                 break;
1615
1616         case LFUN_DEBUG_LEVEL_SET:
1617                 lyxerr.setLevel(Debug::value(to_utf8(cmd.argument())));
1618                 break;
1619
1620         default:
1621                 // The LFUN must be for one of GuiView, BufferView, Buffer or Cursor;
1622                 // let's try that:
1623                 if (current_view_)
1624                         current_view_->dispatch(cmd, dr);
1625                 break;
1626         }
1627 }
1628
1629
1630 docstring GuiApplication::viewStatusMessage()
1631 {
1632         // When meta-fake key is pressed, show the key sequence so far + "M-".
1633         if (d->meta_fake_bit != NoModifier)
1634                 return d->keyseq.print(KeySequence::ForGui) + "M-";
1635
1636         // Else, when a non-complete key sequence is pressed,
1637         // show the available options.
1638         if (d->keyseq.length() > 0 && !d->keyseq.deleted())
1639                 return d->keyseq.printOptions(true);
1640
1641         return docstring();
1642 }
1643
1644
1645 void GuiApplication::handleKeyFunc(FuncCode action)
1646 {
1647         char_type c = 0;
1648
1649         if (d->keyseq.length())
1650                 c = 0;
1651         GuiView * gv = currentView();
1652         LASSERT(gv && gv->currentBufferView(), return);
1653         BufferView * bv = gv->currentBufferView();
1654         bv->getIntl().getTransManager().deadkey(
1655                 c, get_accent(action).accent, bv->cursor().innerText(),
1656                 bv->cursor());
1657         // Need to clear, in case the minibuffer calls these
1658         // actions
1659         d->keyseq.clear();
1660         // copied verbatim from do_accent_char
1661         bv->cursor().resetAnchor();
1662 }
1663
1664
1665 void GuiApplication::processKeySym(KeySymbol const & keysym, KeyModifier state)
1666 {
1667         LYXERR(Debug::KEY, "KeySym is " << keysym.getSymbolName());
1668
1669         // Do nothing if we have nothing (JMarc)
1670         if (!keysym.isOK()) {
1671                 LYXERR(Debug::KEY, "Empty kbd action (probably composing)");
1672                 if (current_view_)
1673                         current_view_->restartCursor();
1674                 return;
1675         }
1676
1677         if (keysym.isModifier()) {
1678                 LYXERR(Debug::KEY, "isModifier true");
1679                 if (current_view_)
1680                         current_view_->restartCursor();
1681                 return;
1682         }
1683
1684         char_type encoded_last_key = keysym.getUCSEncoded();
1685
1686         // Do a one-deep top-level lookup for
1687         // cancel and meta-fake keys. RVDK_PATCH_5
1688         d->cancel_meta_seq.reset();
1689
1690         FuncRequest func = d->cancel_meta_seq.addkey(keysym, state);
1691         LYXERR(Debug::KEY, "action first set to [" << func.action() << ']');
1692
1693         // When not cancel or meta-fake, do the normal lookup.
1694         // Note how the meta_fake Mod1 bit is OR-ed in and reset afterwards.
1695         // Mostly, meta_fake_bit = NoModifier. RVDK_PATCH_5.
1696         if ((func.action() != LFUN_CANCEL) && (func.action() != LFUN_META_PREFIX)) {
1697                 // remove Caps Lock and Mod2 as a modifiers
1698                 func = d->keyseq.addkey(keysym, (state | d->meta_fake_bit));
1699                 LYXERR(Debug::KEY, "action now set to [" << func.action() << ']');
1700         }
1701
1702         // Dont remove this unless you know what you are doing.
1703         d->meta_fake_bit = NoModifier;
1704
1705         // Can this happen now ?
1706         if (func.action() == LFUN_NOACTION)
1707                 func = FuncRequest(LFUN_COMMAND_PREFIX);
1708
1709         LYXERR(Debug::KEY, " Key [action=" << func.action() << "]["
1710                 << d->keyseq.print(KeySequence::Portable) << ']');
1711
1712         // already here we know if it any point in going further
1713         // why not return already here if action == -1 and
1714         // num_bytes == 0? (Lgb)
1715
1716         if (d->keyseq.length() > 1 && current_view_)
1717                 current_view_->message(d->keyseq.print(KeySequence::ForGui));
1718
1719
1720         // Maybe user can only reach the key via holding down shift.
1721         // Let's see. But only if shift is the only modifier
1722         if (func.action() == LFUN_UNKNOWN_ACTION && state == ShiftModifier) {
1723                 LYXERR(Debug::KEY, "Trying without shift");
1724                 func = d->keyseq.addkey(keysym, NoModifier);
1725                 LYXERR(Debug::KEY, "Action now " << func.action());
1726         }
1727
1728         if (func.action() == LFUN_UNKNOWN_ACTION) {
1729                 // Hmm, we didn't match any of the keysequences. See
1730                 // if it's normal insertable text not already covered
1731                 // by a binding
1732                 if (keysym.isText() && d->keyseq.length() == 1) {
1733                         LYXERR(Debug::KEY, "isText() is true, inserting.");
1734                         func = FuncRequest(LFUN_SELF_INSERT,
1735                                            FuncRequest::KEYBOARD);
1736                 } else {
1737                         LYXERR(Debug::KEY, "Unknown, !isText() - giving up");
1738                         if (current_view_) {
1739                                 current_view_->message(_("Unknown function."));
1740                                 current_view_->restartCursor();
1741                         }
1742                         return;
1743                 }
1744         }
1745
1746         if (func.action() == LFUN_SELF_INSERT) {
1747                 if (encoded_last_key != 0) {
1748                         docstring const arg(1, encoded_last_key);
1749                         processFuncRequest(FuncRequest(LFUN_SELF_INSERT, arg,
1750                                              FuncRequest::KEYBOARD));
1751                         LYXERR(Debug::KEY, "SelfInsert arg[`" << to_utf8(arg) << "']");
1752                 }
1753         } else
1754                 processFuncRequest(func);
1755 }
1756
1757
1758 void GuiApplication::processFuncRequest(FuncRequest const & func)
1759 {
1760         lyx::dispatch(func);
1761 }
1762
1763
1764 void GuiApplication::processFuncRequestAsync(FuncRequest const & func)
1765 {
1766         addToFuncRequestQueue(func);
1767         processFuncRequestQueueAsync();
1768 }
1769
1770
1771 void GuiApplication::processFuncRequestQueue()
1772 {
1773         while (!d->func_request_queue_.empty()) {
1774                 processFuncRequest(d->func_request_queue_.front());
1775                 d->func_request_queue_.pop();
1776         }
1777 }
1778
1779
1780 void GuiApplication::processFuncRequestQueueAsync()
1781 {
1782         QTimer::singleShot(0, this, SLOT(slotProcessFuncRequestQueue()));
1783 }
1784
1785
1786 void GuiApplication::addToFuncRequestQueue(FuncRequest const & func)
1787 {
1788         d->func_request_queue_.push(func);
1789 }
1790
1791
1792 void GuiApplication::resetGui()
1793 {
1794         // Set the language defined by the user.
1795         setGuiLanguage();
1796
1797         // Read menus
1798         if (!readUIFile(toqstr(lyxrc.ui_file)))
1799                 // Gives some error box here.
1800                 return;
1801
1802         if (d->global_menubar_)
1803                 d->menus_.fillMenuBar(d->global_menubar_, 0, false);
1804
1805         QHash<int, GuiView *>::iterator it;
1806         for (it = d->views_.begin(); it != d->views_.end(); ++it) {
1807                 GuiView * gv = *it;
1808                 setCurrentView(gv);
1809                 gv->setLayoutDirection(layoutDirection());
1810                 gv->resetDialogs();
1811         }
1812
1813         processFuncRequest(FuncRequest(LFUN_SCREEN_FONT_UPDATE));
1814 }
1815
1816
1817 void GuiApplication::createView(int view_id)
1818 {
1819         createView(QString(), true, view_id);
1820 }
1821
1822
1823 void GuiApplication::createView(QString const & geometry_arg, bool autoShow,
1824         int view_id)
1825 {
1826         // release the keyboard which might have been grabed by the global
1827         // menubar on Mac to catch shortcuts even without any GuiView.
1828         if (d->global_menubar_)
1829                 d->global_menubar_->releaseKeyboard();
1830
1831         // create new view
1832         int id = view_id;
1833         while (d->views_.find(id) != d->views_.end())
1834                 id++;
1835
1836         LYXERR(Debug::GUI, "About to create new window with ID " << id);
1837         GuiView * view = new GuiView(id);
1838         // register view
1839         d->views_[id] = view;
1840
1841         if (autoShow) {
1842                 view->show();
1843                 setActiveWindow(view);
1844         }
1845
1846         if (!geometry_arg.isEmpty()) {
1847 #ifdef Q_WS_WIN
1848                 int x, y;
1849                 int w, h;
1850                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
1851                 re.indexIn(geometry_arg);
1852                 w = re.cap(1).toInt();
1853                 h = re.cap(2).toInt();
1854                 x = re.cap(3).toInt();
1855                 y = re.cap(4).toInt();
1856                 view->setGeometry(x, y, w, h);
1857 #endif
1858         }
1859         view->setFocus();
1860 }
1861
1862
1863 Clipboard & GuiApplication::clipboard()
1864 {
1865         return d->clipboard_;
1866 }
1867
1868
1869 Selection & GuiApplication::selection()
1870 {
1871         return d->selection_;
1872 }
1873
1874
1875 FontLoader & GuiApplication::fontLoader()
1876 {
1877         return d->font_loader_;
1878 }
1879
1880
1881 Toolbars const & GuiApplication::toolbars() const
1882 {
1883         return d->toolbars_;
1884 }
1885
1886
1887 Toolbars & GuiApplication::toolbars()
1888 {
1889         return d->toolbars_;
1890 }
1891
1892
1893 Menus const & GuiApplication::menus() const
1894 {
1895         return d->menus_;
1896 }
1897
1898
1899 Menus & GuiApplication::menus()
1900 {
1901         return d->menus_;
1902 }
1903
1904
1905 QList<int> GuiApplication::viewIds() const
1906 {
1907         return d->views_.keys();
1908 }
1909
1910
1911 ColorCache & GuiApplication::colorCache()
1912 {
1913         return d->color_cache_;
1914 }
1915
1916
1917 int GuiApplication::exec()
1918 {
1919         // asynchronously handle batch commands. This event will be in
1920         // the event queue in front of other asynchronous events. Hence,
1921         // we can assume in the latter that the gui is setup already.
1922         QTimer::singleShot(0, this, SLOT(execBatchCommands()));
1923
1924         return QApplication::exec();
1925 }
1926
1927
1928 void GuiApplication::exit(int status)
1929 {
1930         QApplication::exit(status);
1931 }
1932
1933
1934 void GuiApplication::setGuiLanguage()
1935 {
1936         // Set the language defined by the user.
1937         setRcGuiLanguage();
1938
1939         QString const default_language = toqstr(Messages::defaultLanguage());
1940         LYXERR(Debug::LOCALE, "Trying to set default locale to: " << default_language);
1941         QLocale const default_locale(default_language);
1942         QLocale::setDefault(default_locale);
1943
1944         // install translation file for Qt built-in dialogs
1945         QString const language_name = QString("qt_") + default_locale.name();
1946
1947         // language_name can be short (e.g. qt_zh) or long (e.g. qt_zh_CN).
1948         // Short-named translator can be loaded from a long name, but not the
1949         // opposite. Therefore, long name should be used without truncation.
1950         // c.f. http://doc.trolltech.com/4.1/qtranslator.html#load
1951         if (!d->qt_trans_.load(language_name,
1952                         QLibraryInfo::location(QLibraryInfo::TranslationsPath))) {
1953                 LYXERR(Debug::LOCALE, "Could not find Qt translations for locale "
1954                         << language_name);
1955         } else {
1956                 LYXERR(Debug::LOCALE, "Successfully installed Qt translations for locale "
1957                         << language_name);
1958         }
1959
1960         switch (default_locale.language()) {
1961         case QLocale::Arabic :
1962         case QLocale::Hebrew :
1963         case QLocale::Persian :
1964         case QLocale::Urdu :
1965                 setLayoutDirection(Qt::RightToLeft);
1966                 break;
1967         default:
1968                 setLayoutDirection(Qt::LeftToRight);
1969         }
1970 }
1971
1972
1973 void GuiApplication::execBatchCommands()
1974 {
1975         setGuiLanguage();
1976
1977         // Read menus
1978         if (!readUIFile(toqstr(lyxrc.ui_file)))
1979                 // Gives some error box here.
1980                 return;
1981
1982 #ifdef Q_WS_MACX
1983 #if QT_VERSION > 0x040600
1984         setAttribute(Qt::AA_MacDontSwapCtrlAndMeta,lyxrc.mac_dontswap_ctrl_meta);
1985 #endif
1986         // Create the global default menubar which is shown for the dialogs
1987         // and if no GuiView is visible.
1988         // This must be done after the session was recovered to know the "last files".
1989         d->global_menubar_ = new GlobalMenuBar();
1990         d->menus_.fillMenuBar(d->global_menubar_, 0, true);
1991 #endif
1992
1993         lyx::execBatchCommands();
1994 }
1995
1996
1997 QAbstractItemModel * GuiApplication::languageModel()
1998 {
1999         if (d->language_model_)
2000                 return d->language_model_;
2001
2002         QStandardItemModel * lang_model = new QStandardItemModel(this);
2003         lang_model->insertColumns(0, 3);
2004         int current_row;
2005         QIcon speller(getPixmap("images/", "dialog-show_spellchecker", "png"));
2006         QIcon saurus(getPixmap("images/", "thesaurus-entry", "png"));
2007         Languages::const_iterator it = lyx::languages.begin();
2008         Languages::const_iterator end = lyx::languages.end();
2009         for (; it != end; ++it) {
2010                 current_row = lang_model->rowCount();
2011                 lang_model->insertRows(current_row, 1);
2012                 QModelIndex pl_item = lang_model->index(current_row, 0);
2013                 QModelIndex sp_item = lang_model->index(current_row, 1);
2014                 QModelIndex th_item = lang_model->index(current_row, 2);
2015                 lang_model->setData(pl_item, qt_(it->second.display()), Qt::DisplayRole);
2016                 lang_model->setData(pl_item, toqstr(it->second.lang()), Qt::UserRole);
2017                 lang_model->setData(sp_item, qt_(it->second.display()), Qt::DisplayRole);
2018                 lang_model->setData(sp_item, toqstr(it->second.lang()), Qt::UserRole);
2019                 if (theSpellChecker() && theSpellChecker()->hasDictionary(&it->second))
2020                         lang_model->setData(sp_item, speller, Qt::DecorationRole);
2021                 lang_model->setData(th_item, qt_(it->second.display()), Qt::DisplayRole);
2022                 lang_model->setData(th_item, toqstr(it->second.lang()), Qt::UserRole);
2023                 if (thesaurus.thesaurusInstalled(from_ascii(it->second.code())))
2024                         lang_model->setData(th_item, saurus, Qt::DecorationRole);
2025         }
2026         d->language_model_ = new QSortFilterProxyModel(this);
2027         d->language_model_->setSourceModel(lang_model);
2028 #if QT_VERSION >= 0x040300
2029         d->language_model_->setSortLocaleAware(true);
2030 #endif
2031         return d->language_model_;
2032 }
2033
2034
2035 void GuiApplication::restoreGuiSession()
2036 {
2037         if (!lyxrc.load_session)
2038                 return;
2039
2040         Session & session = theSession();
2041         LastOpenedSection::LastOpened const & lastopened =
2042                 session.lastOpened().getfiles();
2043
2044         FileName active_file;
2045         // do not add to the lastfile list since these files are restored from
2046         // last session, and should be already there (regular files), or should
2047         // not be added at all (help files).
2048         for (size_t i = 0; i < lastopened.size(); ++i) {
2049                 FileName const & file_name = lastopened[i].file_name;
2050                 if (d->views_.empty() || (!lyxrc.open_buffers_in_tabs
2051                           && current_view_->documentBufferView() != 0)) {
2052                         boost::crc_32_type crc;
2053                         string const & fname = file_name.absFileName();
2054                         crc = for_each(fname.begin(), fname.end(), crc);
2055                         createView(crc.checksum());
2056                 }
2057                 current_view_->loadDocument(file_name, false);
2058
2059                 if (lastopened[i].active)
2060                         active_file = file_name;
2061         }
2062
2063         // Restore last active buffer
2064         Buffer * buffer = theBufferList().getBuffer(active_file);
2065         if (buffer)
2066                 current_view_->setBuffer(buffer);
2067
2068         // clear this list to save a few bytes of RAM
2069         session.lastOpened().clear();
2070 }
2071
2072
2073 QString const GuiApplication::romanFontName()
2074 {
2075         QFont font;
2076         font.setKerning(false);
2077         font.setStyleHint(QFont::Serif);
2078         font.setFamily("serif");
2079
2080         return QFontInfo(font).family();
2081 }
2082
2083
2084 QString const GuiApplication::sansFontName()
2085 {
2086         QFont font;
2087         font.setKerning(false);
2088         font.setStyleHint(QFont::SansSerif);
2089         font.setFamily("sans");
2090
2091         return QFontInfo(font).family();
2092 }
2093
2094
2095 QString const GuiApplication::typewriterFontName()
2096 {
2097         QFont font;
2098         font.setKerning(false);
2099         font.setStyleHint(QFont::TypeWriter);
2100         font.setFamily("monospace");
2101
2102         return QFontInfo(font).family();
2103 }
2104
2105
2106 void GuiApplication::handleRegularEvents()
2107 {
2108         ForkedCallsController::handleCompletedProcesses();
2109 }
2110
2111
2112 bool GuiApplication::event(QEvent * e)
2113 {
2114         switch(e->type()) {
2115         case QEvent::FileOpen: {
2116                 // Open a file; this happens only on Mac OS X for now.
2117                 //
2118                 // We do this asynchronously because on startup the batch
2119                 // commands are not executed here yet and the gui is not ready
2120                 // therefore.
2121                 QFileOpenEvent * foe = static_cast<QFileOpenEvent *>(e);
2122                 FuncRequest const fr(LFUN_FILE_OPEN, qstring_to_ucs4(foe->file()));
2123                 processFuncRequestAsync(fr);
2124                 e->accept();
2125                 return true;
2126         }
2127         default:
2128                 return QApplication::event(e);
2129         }
2130 }
2131
2132
2133 bool GuiApplication::notify(QObject * receiver, QEvent * event)
2134 {
2135         try {
2136                 return QApplication::notify(receiver, event);
2137         }
2138         catch (ExceptionMessage const & e) {
2139                 switch(e.type_) {
2140                 case ErrorException:
2141                         emergencyCleanup();
2142                         setQuitOnLastWindowClosed(false);
2143                         closeAllViews();
2144                         Alert::error(e.title_, e.details_);
2145 #ifndef NDEBUG
2146                         // Properly crash in debug mode in order to get a useful backtrace.
2147                         abort();
2148 #endif
2149                         // In release mode, try to exit gracefully.
2150                         this->exit(1);
2151
2152                 case BufferException: {
2153                         if (!current_view_->documentBufferView())
2154                                 return false;
2155                         Buffer * buf = &current_view_->documentBufferView()->buffer();
2156                         docstring details = e.details_ + '\n';
2157                         details += buf->emergencyWrite();
2158                         theBufferList().release(buf);
2159                         details += "\n" + _("The current document was closed.");
2160                         Alert::error(e.title_, details);
2161                         return false;
2162                 }
2163                 case WarningException:
2164                         Alert::warning(e.title_, e.details_);
2165                         return false;
2166                 }
2167         }
2168         catch (exception const & e) {
2169                 docstring s = _("LyX has caught an exception, it will now "
2170                         "attempt to save all unsaved documents and exit."
2171                         "\n\nException: ");
2172                 s += from_ascii(e.what());
2173                 Alert::error(_("Software exception Detected"), s);
2174                 lyx_exit(1);
2175         }
2176         catch (...) {
2177                 docstring s = _("LyX has caught some really weird exception, it will "
2178                         "now attempt to save all unsaved documents and exit.");
2179                 Alert::error(_("Software exception Detected"), s);
2180                 lyx_exit(1);
2181         }
2182
2183         return false;
2184 }
2185
2186
2187 bool GuiApplication::getRgbColor(ColorCode col, RGBColor & rgbcol)
2188 {
2189         QColor const & qcol = d->color_cache_.get(col);
2190         if (!qcol.isValid()) {
2191                 rgbcol.r = 0;
2192                 rgbcol.g = 0;
2193                 rgbcol.b = 0;
2194                 return false;
2195         }
2196         rgbcol.r = qcol.red();
2197         rgbcol.g = qcol.green();
2198         rgbcol.b = qcol.blue();
2199         return true;
2200 }
2201
2202
2203 bool Application::getRgbColorUncached(ColorCode col, RGBColor & rgbcol)
2204 {
2205         QColor const qcol(lcolor.getX11Name(col).c_str());
2206         if (!qcol.isValid()) {
2207                 rgbcol.r = 0;
2208                 rgbcol.g = 0;
2209                 rgbcol.b = 0;
2210                 return false;
2211         }
2212         rgbcol.r = qcol.red();
2213         rgbcol.g = qcol.green();
2214         rgbcol.b = qcol.blue();
2215         return true;
2216 }
2217
2218
2219 string const GuiApplication::hexName(ColorCode col)
2220 {
2221         return ltrim(fromqstr(d->color_cache_.get(col).name()), "#");
2222 }
2223
2224
2225 void GuiApplication::registerSocketCallback(int fd, SocketCallback func)
2226 {
2227         SocketNotifier * sn = new SocketNotifier(this, fd, func);
2228         d->socket_notifiers_[fd] = sn;
2229         connect(sn, SIGNAL(activated(int)), this, SLOT(socketDataReceived(int)));
2230 }
2231
2232
2233 void GuiApplication::socketDataReceived(int fd)
2234 {
2235         d->socket_notifiers_[fd]->func_();
2236 }
2237
2238
2239 void GuiApplication::unregisterSocketCallback(int fd)
2240 {
2241         d->socket_notifiers_.take(fd)->setEnabled(false);
2242 }
2243
2244
2245 void GuiApplication::commitData(QSessionManager & sm)
2246 {
2247         /// The implementation is required to avoid an application exit
2248         /// when session state save is triggered by session manager.
2249         /// The default implementation sends a close event to all
2250         /// visible top level widgets when session managment allows
2251         /// interaction.
2252         /// We are changing that to close all wiew one by one.
2253         /// FIXME: verify if the default implementation is enough now.
2254         #ifdef QT_NO_SESSIONMANAGER
2255                 #warning Qt is compiled without session manager
2256                 (void) sm;
2257         #else
2258                 if (sm.allowsInteraction() && !closeAllViews())
2259                         sm.cancel();
2260         #endif
2261 }
2262
2263
2264 void GuiApplication::unregisterView(GuiView * gv)
2265 {
2266         LASSERT(d->views_[gv->id()] == gv, /**/);
2267         d->views_.remove(gv->id());
2268         if (current_view_ == gv)
2269                 current_view_ = 0;
2270 }
2271
2272
2273 bool GuiApplication::closeAllViews()
2274 {
2275         if (d->views_.empty())
2276                 return true;
2277
2278         // When a view/window was closed before without quitting LyX, there
2279         // are already entries in the lastOpened list.
2280         theSession().lastOpened().clear();
2281
2282         QList<GuiView *> views = d->views_.values();
2283         foreach (GuiView * view, views) {
2284                 if (!view->closeScheduled())
2285                         return false;
2286         }
2287
2288         d->views_.clear();
2289         return true;
2290 }
2291
2292
2293 GuiView & GuiApplication::view(int id) const
2294 {
2295         LASSERT(d->views_.contains(id), /**/);
2296         return *d->views_.value(id);
2297 }
2298
2299
2300 void GuiApplication::hideDialogs(string const & name, Inset * inset) const
2301 {
2302         QList<GuiView *> views = d->views_.values();
2303         foreach (GuiView * view, views)
2304                 view->hideDialog(name, inset);
2305 }
2306
2307
2308 Buffer const * GuiApplication::updateInset(Inset const * inset) const
2309 {
2310         Buffer const * buffer_ = 0;
2311         QHash<int, GuiView *>::iterator end = d->views_.end();
2312         for (QHash<int, GuiView *>::iterator it = d->views_.begin(); it != end; ++it) {
2313                 if (Buffer const * ptr = (*it)->updateInset(inset))
2314                         buffer_ = ptr;
2315         }
2316         return buffer_;
2317 }
2318
2319
2320 bool GuiApplication::searchMenu(FuncRequest const & func,
2321         docstring_list & names) const
2322 {
2323         return d->menus_.searchMenu(func, names);
2324 }
2325
2326
2327 // Ensure that a file is read only once (prevents include loops)
2328 static QStringList uifiles;
2329 // store which ui files define Toolbars
2330 static QStringList toolbar_uifiles;
2331
2332
2333 GuiApplication::ReturnValues GuiApplication::readUIFile(FileName ui_path)
2334 {
2335         enum {
2336                 ui_menuset = 1,
2337                 ui_toolbars,
2338                 ui_toolbarset,
2339                 ui_include,
2340                 ui_format,
2341                 ui_last
2342         };
2343
2344         LexerKeyword uitags[] = {
2345                 { "format", ui_format },
2346                 { "include", ui_include },
2347                 { "menuset", ui_menuset },
2348                 { "toolbars", ui_toolbars },
2349                 { "toolbarset", ui_toolbarset }
2350         };
2351
2352         Lexer lex(uitags);
2353         lex.setFile(ui_path);
2354         if (!lex.isOK()) {
2355                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
2356                                          << endl;
2357         }
2358
2359         if (lyxerr.debugging(Debug::PARSER))
2360                 lex.printTable(lyxerr);
2361
2362         bool error = false;
2363         // format before introduction of format tag
2364         unsigned int format = 0;
2365         while (lex.isOK()) {
2366                 int const status = lex.lex();
2367
2368                 // we have to do this check here, outside the switch,
2369                 // because otherwise we would start reading include files,
2370                 // e.g., if the first tag we hit was an include tag.
2371                 if (status == ui_format)
2372                         if (lex.next()) {
2373                                 format = lex.getInteger();
2374                                 continue;
2375                         }
2376
2377                 // this will trigger unless the first tag we hit is a format
2378                 // tag, with the right format.
2379                 if (format != LFUN_FORMAT)
2380                         return FormatMismatch;
2381
2382                 switch (status) {
2383                 case Lexer::LEX_FEOF:
2384                         continue;
2385
2386                 case ui_include: {
2387                         lex.next(true);
2388                         QString const file = toqstr(lex.getString());
2389                         bool const success = readUIFile(file, true);
2390                         if (!success) {
2391                                 LYXERR0("Failed to read inlcuded file: " << fromqstr(file));
2392                                 return ReadError;
2393                         }
2394                         break;
2395                 }
2396
2397                 case ui_menuset:
2398                         d->menus_.read(lex);
2399                         break;
2400
2401                 case ui_toolbarset:
2402                         d->toolbars_.readToolbars(lex);
2403                         break;
2404
2405                 case ui_toolbars:
2406                         d->toolbars_.readToolbarSettings(lex);
2407                         toolbar_uifiles.push_back(toqstr(ui_path.absFileName()));
2408                         break;
2409
2410                 default:
2411                         if (!rtrim(lex.getString()).empty())
2412                                 lex.printError("LyX::ReadUIFile: "
2413                                                "Unknown menu tag: `$$Token'");
2414                         else
2415                                 LYXERR0("Error with status: " << status);
2416                         error = true;
2417                         break;
2418                 }
2419
2420         }
2421         return (error ? ReadError : ReadOK);
2422 }
2423
2424
2425 bool GuiApplication::readUIFile(QString const & name, bool include)
2426 {
2427         LYXERR(Debug::INIT, "About to read " << name << "...");
2428
2429         FileName ui_path;
2430         if (include) {
2431                 ui_path = libFileSearch("ui", name, "inc");
2432                 if (ui_path.empty())
2433                         ui_path = libFileSearch("ui", changeExtension(name, "inc"));
2434         } else {
2435                 ui_path = libFileSearch("ui", name, "ui");
2436         }
2437
2438         if (ui_path.empty()) {
2439                 static const QString defaultUIFile = "default";
2440                 LYXERR(Debug::INIT, "Could not find " << name);
2441                 if (include) {
2442                         Alert::warning(_("Could not find UI definition file"),
2443                                 bformat(_("Error while reading the included file\n%1$s\n"
2444                                         "Please check your installation."), qstring_to_ucs4(name)));
2445                         return false;
2446                 }
2447                 if (name == defaultUIFile) {
2448                         LYXERR(Debug::INIT, "Could not find default UI file!!");
2449                         Alert::warning(_("Could not find default UI file"),
2450                                 _("LyX could not find the default UI file!\n"
2451                                   "Please check your installation."));
2452                         return false;
2453                 }
2454                 Alert::warning(_("Could not find UI definition file"),
2455                 bformat(_("Error while reading the configuration file\n%1$s\n"
2456                         "Falling back to default.\n"
2457                         "Please look under Tools>Preferences>User Interface and\n"
2458                         "check which User Interface file you are using."), qstring_to_ucs4(name)));
2459                 return readUIFile(defaultUIFile, false);
2460         }
2461
2462         QString const uifile = toqstr(ui_path.absFileName());
2463         if (uifiles.contains(uifile)) {
2464                 if (!include) {
2465                         // We are reading again the top uifile so reset the safeguard:
2466                         uifiles.clear();
2467                         d->menus_.reset();
2468                         d->toolbars_.reset();
2469                 } else {
2470                         LYXERR(Debug::INIT, "UI file '" << name << "' has been read already. "
2471                                 << "Is this an include loop?");
2472                         return false;
2473                 }
2474         }
2475         uifiles.push_back(uifile);
2476
2477         LYXERR(Debug::INIT, "Found " << name << " in " << ui_path);
2478
2479         ReturnValues retval = readUIFile(ui_path);
2480
2481         if (retval == FormatMismatch) {
2482                 LYXERR(Debug::FILES, "Converting ui file to format " << LFUN_FORMAT);
2483                 FileName const tempfile = FileName::tempName("convert_ui");
2484                 bool const success = prefs2prefs(ui_path, tempfile, true);
2485                 if (!success) {
2486                         LYXERR0("Unable to convert " << ui_path.absFileName() <<
2487                                 " to format " << LFUN_FORMAT << ".");
2488                 } else {
2489                         retval = readUIFile(tempfile);
2490                         tempfile.removeFile();
2491                 }
2492         }
2493
2494         if (retval != ReadOK) {
2495                 LYXERR0("Unable to read UI file: " << ui_path.absFileName());
2496                 return false;
2497         }
2498
2499         if (include)
2500                 return true;
2501
2502         QSettings settings;
2503         settings.beginGroup("ui_files");
2504         bool touched = false;
2505         for (int i = 0; i != uifiles.size(); ++i) {
2506                 QFileInfo fi(uifiles[i]);
2507                 QDateTime const date_value = fi.lastModified();
2508                 QString const name_key = QString::number(i);
2509                 // if an ui file which defines Toolbars has changed,
2510                 // we have to reset the settings
2511                 if (toolbar_uifiles.contains(uifiles[i])
2512                  && (!settings.contains(name_key)
2513                  || settings.value(name_key).toString() != uifiles[i]
2514                  || settings.value(name_key + "/date").toDateTime() != date_value)) {
2515                         touched = true;
2516                         settings.setValue(name_key, uifiles[i]);
2517                         settings.setValue(name_key + "/date", date_value);
2518                 }
2519         }
2520         settings.endGroup();
2521         if (touched)
2522                 settings.remove("views");
2523
2524         return true;
2525 }
2526
2527
2528 void GuiApplication::onLastWindowClosed()
2529 {
2530         if (d->global_menubar_)
2531                 d->global_menubar_->grabKeyboard();
2532 }
2533
2534
2535 ////////////////////////////////////////////////////////////////////////
2536 //
2537 // X11 specific stuff goes here...
2538
2539 #ifdef Q_WS_X11
2540 bool GuiApplication::x11EventFilter(XEvent * xev)
2541 {
2542         if (!current_view_)
2543                 return false;
2544
2545         switch (xev->type) {
2546         case SelectionRequest: {
2547                 if (xev->xselectionrequest.selection != XA_PRIMARY)
2548                         break;
2549                 LYXERR(Debug::SELECTION, "X requested selection.");
2550                 BufferView * bv = current_view_->currentBufferView();
2551                 if (bv) {
2552                         docstring const sel = bv->requestSelection();
2553                         if (!sel.empty())
2554                                 d->selection_.put(sel);
2555                 }
2556                 break;
2557         }
2558         case SelectionClear: {
2559                 if (xev->xselectionclear.selection != XA_PRIMARY)
2560                         break;
2561                 LYXERR(Debug::SELECTION, "Lost selection.");
2562                 BufferView * bv = current_view_->currentBufferView();
2563                 if (bv)
2564                         bv->clearSelection();
2565                 break;
2566         }
2567         }
2568         return false;
2569 }
2570 #endif
2571
2572 } // namespace frontend
2573
2574
2575 void hideDialogs(std::string const & name, Inset * inset)
2576 {
2577         if (theApp())
2578                 frontend::guiApp->hideDialogs(name, inset);
2579 }
2580
2581
2582 ////////////////////////////////////////////////////////////////////
2583 //
2584 // Font stuff
2585 //
2586 ////////////////////////////////////////////////////////////////////
2587
2588 frontend::FontLoader & theFontLoader()
2589 {
2590         LASSERT(frontend::guiApp, /**/);
2591         return frontend::guiApp->fontLoader();
2592 }
2593
2594
2595 frontend::FontMetrics const & theFontMetrics(Font const & f)
2596 {
2597         return theFontMetrics(f.fontInfo());
2598 }
2599
2600
2601 frontend::FontMetrics const & theFontMetrics(FontInfo const & f)
2602 {
2603         LASSERT(frontend::guiApp, /**/);
2604         return frontend::guiApp->fontLoader().metrics(f);
2605 }
2606
2607
2608 ////////////////////////////////////////////////////////////////////
2609 //
2610 // Misc stuff
2611 //
2612 ////////////////////////////////////////////////////////////////////
2613
2614 frontend::Clipboard & theClipboard()
2615 {
2616         LASSERT(frontend::guiApp, /**/);
2617         return frontend::guiApp->clipboard();
2618 }
2619
2620
2621 frontend::Selection & theSelection()
2622 {
2623         LASSERT(frontend::guiApp, /**/);
2624         return frontend::guiApp->selection();
2625 }
2626
2627
2628 } // namespace lyx
2629
2630 #include "moc_GuiApplication.cpp"