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 "LaTeXPackages.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 <QEvent>
  84 #include <QEventLoop>
  85 #include <QFileOpenEvent>
  86 #include <QFileInfo>
  87 #include <QHash>
  88 #include <QIcon>
  89 #include <QImageReader>
  90 #include <QKeyEvent>
  91 #include <QLocale>
  92 #include <QLibraryInfo>
  93 #include <QList>
  94 #include <QMacPasteboardMime>
  95 #include <QMenuBar>
  96 #include <QMimeData>
  97 #include <QObject>
  98 #include <QPixmap>
  99 #include <QPixmapCache>
 100 #include <QRegExp>
 101 #include <QSessionManager>
 102 #include <QSettings>
 103 #include <QShowEvent>
 104 #include <QSocketNotifier>
 105 #include <QSortFilterProxyModel>
 106 #include <QStandardItemModel>
 107 #include <QTextCodec>
 108 #include <QTimer>
 109 #include <QTranslator>
 110 #if QT_VERSION >= 0x040400
 111 #include <QThreadPool>
 112 #endif
 113 #include <QWidget>
 114
 115 #ifdef Q_WS_X11
 116 #include <X11/Xatom.h>
 117 #include <X11/Xlib.h>
 118 #undef CursorShape
 119 #undef None
 120 #endif
 121
 122 #ifdef Q_WS_WIN
 123 #include <QWindowsMime>
 124 #ifdef Q_CC_GNU
 125 #include <wtypes.h>
 126 #endif
 127 #include <objidl.h>
 128 #endif // Q_WS_WIN
 129
 130 #include "support/bind.h"
 131 #include <boost/crc.hpp>
 132
 133 #include <exception>
 134 #include <sstream>
 135 #include <vector>
 136
 137 using namespace std;
 138 using namespace lyx::support;
 139
 140
 141 static void initializeResources()
 142 {
 143         static bool initialized = false;
 144         if (!initialized) {
 145                 Q_INIT_RESOURCE(Resources);
 146                 initialized = true;
 147         }
 148 }
 149
 150
 151 namespace lyx {
 152
 153 frontend::Application * createApplication(int & argc, char * argv[])
 154 {
 155 #ifndef Q_WS_X11
 156         // prune -geometry argument(s) by shifting
 157         // the following ones 2 places down.
 158         for (int i = 0 ; i < argc ; ++i) {
 159                 if (strcmp(argv[i], "-geometry") == 0) {
 160                         int const remove = (i+1) < argc ? 2 : 1;
 161                         argc -= remove;
 162                         for (int j = i; j < argc; ++j)
 163                                 argv[j] = argv[j + remove];
 164                         --i;
 165                 }
 166         }
 167 #endif
 168         frontend::GuiApplication * guiApp = new frontend::GuiApplication(argc, argv);
 169         // I'd rather do that in the constructor, but I do not think that
 170         // the palette is accessible there.
 171         guiApp->colorCache().setPalette(guiApp->palette());
 172         return guiApp;
 173 }
 174
 175 namespace frontend {
 176
 177
 178 /// Return the list of loadable formats.
 179 vector<string> loadableImageFormats()
 180 {
 181         vector<string> fmts;
 182
 183         QList<QByteArray> qt_formats = QImageReader::supportedImageFormats();
 184
 185         LYXERR(Debug::GRAPHICS,
 186                 "\nThe image loader can load the following directly:\n");
 187
 188         if (qt_formats.empty())
 189                 LYXERR(Debug::GRAPHICS, "\nQt4 Problem: No Format available!");
 190
 191         for (QList<QByteArray>::const_iterator it = qt_formats.begin(); it != qt_formats.end(); ++it) {
 192
 193                 LYXERR(Debug::GRAPHICS, (const char *) *it << ", ");
 194
 195                 string ext = ascii_lowercase((const char *) *it);
 196                 // special case
 197                 if (ext == "jpeg")
 198                         ext = "jpg";
 199                 fmts.push_back(ext);
 200         }
 201
 202         return fmts;
 203 }
 204
 205
 206 ////////////////////////////////////////////////////////////////////////
 207 //
 208 // Icon loading support code
 209 //
 210 ////////////////////////////////////////////////////////////////////////
 211
 212 namespace {
 213
 214 struct PngMap {
 215         QString key;
 216         QString value;
 217 };
 218
 219
 220 bool operator<(PngMap const & lhs, PngMap const & rhs)
 221 {
 222         return lhs.key < rhs.key;
 223 }
 224
 225
 226 class CompareKey {
 227 public:
 228         CompareKey(QString const & name) : name_(name) {}
 229         bool operator()(PngMap const & other) const { return other.key == name_; }
 230 private:
 231         QString const name_;
 232 };
 233
 234
 235 // this must be sorted alphabetically
 236 // Upper case comes before lower case
 237 PngMap sorted_png_map[] = {
 238         { "Bumpeq", "bumpeq2" },
 239         { "Cap", "cap2" },
 240         { "Cup", "cup2" },
 241         { "Delta", "delta2" },
 242         { "Diamond", "diamond2" },
 243         { "Downarrow", "downarrow2" },
 244         { "Gamma", "gamma2" },
 245         { "Lambda", "lambda2" },
 246         { "Leftarrow", "leftarrow2" },
 247         { "Leftrightarrow", "leftrightarrow2" },
 248         { "Longleftarrow", "longleftarrow2" },
 249         { "Longleftrightarrow", "longleftrightarrow2" },
 250         { "Longrightarrow", "longrightarrow2" },
 251         { "Omega", "omega2" },
 252         { "Phi", "phi2" },
 253         { "Pi", "pi2" },
 254         { "Psi", "psi2" },
 255         { "Rightarrow", "rightarrow2" },
 256         { "Sigma", "sigma2" },
 257         { "Subset", "subset2" },
 258         { "Supset", "supset2" },
 259         { "Theta", "theta2" },
 260         { "Uparrow", "uparrow2" },
 261         { "Updownarrow", "updownarrow2" },
 262         { "Upsilon", "upsilon2" },
 263         { "Vdash", "vdash3" },
 264         { "Vert", "vert2" },
 265         { "Xi", "xi2" },
 266         { "nLeftarrow", "nleftarrow2" },
 267         { "nLeftrightarrow", "nleftrightarrow2" },
 268         { "nRightarrow", "nrightarrow2" },
 269         { "nVDash", "nvdash3" },
 270         { "nvDash", "nvdash2" },
 271         { "textrm \\AA", "textrm_AA"},
 272         { "textrm \\O", "textrm_O"},
 273         { "vDash", "vdash2" }
 274 };
 275
 276 size_t const nr_sorted_png_map = sizeof(sorted_png_map) / sizeof(PngMap);
 277
 278
 279 QString findPng(QString const & name)
 280 {
 281         PngMap const * const begin = sorted_png_map;
 282         PngMap const * const end = begin + nr_sorted_png_map;
 283         LASSERT(sorted(begin, end), /**/);
 284
 285         PngMap const * const it = find_if(begin, end, CompareKey(name));
 286
 287         QString png_name;
 288         if (it != end) {
 289                 png_name = it->value;
 290         } else {
 291                 png_name = name;
 292                 png_name.replace('_', "underscore");
 293                 png_name.replace(' ', '_');
 294
 295                 // This way we can have "math-delim { }" on the toolbar.
 296                 png_name.replace('(', "lparen");
 297                 png_name.replace(')', "rparen");
 298                 png_name.replace('[', "lbracket");
 299                 png_name.replace(']', "rbracket");
 300                 png_name.replace('{', "lbrace");
 301                 png_name.replace('}', "rbrace");
 302                 png_name.replace('|', "bars");
 303                 png_name.replace(',', "thinspace");
 304                 png_name.replace(':', "mediumspace");
 305                 png_name.replace(';', "thickspace");
 306                 png_name.replace('!', "negthinspace");
 307         }
 308
 309         LYXERR(Debug::GUI, "findPng(" << name << ")\n"
 310                 << "Looking for math PNG called \"" << png_name << '"');
 311         return png_name;
 312 }
 313
 314 } // namespace anon
 315
 316
 317 QString iconName(FuncRequest const & f, bool unknown)
 318 {
 319         initializeResources();
 320         QString name1;
 321         QString name2;
 322         QString path;
 323         switch (f.action()) {
 324         case LFUN_MATH_INSERT:
 325                 if (!f.argument().empty()) {
 326                         path = "math/";
 327                         name1 = findPng(toqstr(f.argument()).mid(1));
 328                 }
 329                 break;
 330         case LFUN_MATH_DELIM:
 331         case LFUN_MATH_BIGDELIM:
 332                 path = "math/";
 333                 name1 = findPng(toqstr(f.argument()));
 334                 break;
 335         case LFUN_CALL:
 336                 path = "commands/";
 337                 name1 = toqstr(f.argument());
 338                 break;
 339         case LFUN_COMMAND_ALTERNATIVES: {
 340                 // use the first of the alternative commands
 341                 docstring firstcom;
 342                 docstring dummy = split(f.argument(), firstcom, ';');
 343                 name1 = toqstr(firstcom);
 344                 // FIXME: we should rename the icons to tabular-xxx instead of
 345                 // "tabular-feature-xxx"
 346                 name1.replace("inset-modify tabular", "tabular-feature");
 347                 name1.replace(' ', '_');
 348                 break;
 349         }
 350         case LFUN_INSET_MODIFY: {
 351                 // FIXME: we should rename the icons to tabular-xxx instead of
 352                 // "tabular-feature-xxx" and generalize this naming to all
 353                 // insets, not to tabular using ones.
 354                 string inset_name;
 355                 string const command = split(to_utf8(f.argument()), inset_name, ' ');
 356                 if (insetCode(inset_name) == TABULAR_CODE) {
 357                         name1 = "tabular-feature "+ toqstr(command);
 358                         name1.replace(' ', '_');
 359                         break;
 360                 }
 361         }
 362         default:
 363                 name2 = toqstr(lyxaction.getActionName(f.action()));
 364                 name1 = name2;
 365
 366                 if (!f.argument().empty()) {
 367                         name1 = name2 + ' ' + toqstr(f.argument());
 368                         name1.replace(' ', '_');
 369                         name1.replace('\\', "backslash");
 370                 }
 371         }
 372
 373         QString imagedir = "images/" + path;
 374         FileName fname = imageLibFileSearch(imagedir, name1, "png");
 375         if (fname.exists())
 376                 return toqstr(fname.absFileName());
 377
 378         fname = imageLibFileSearch(imagedir, name2, "png");
 379         if (fname.exists())
 380                 return toqstr(fname.absFileName());
 381
 382         path = ":/images/" + path;
 383         QDir res(path);
 384         if (!res.exists()) {
 385                 LYXERR0("Directory " << path << " not found in resource!");
 386                 return QString();
 387         }
 388         name1 += ".png";
 389         if (res.exists(name1))
 390                 return path + name1;
 391
 392         name2 += ".png";
 393         if (res.exists(name2))
 394                 return path + name2;
 395
 396         LYXERR(Debug::GUI, "Cannot find icon with filename "
 397                            << "\"" << name1 << "\""
 398                            << " or filename "
 399                            << "\"" << name2 << "\""
 400                            << " for command \""
 401                            << lyxaction.getActionName(f.action())
 402                            << '(' << to_utf8(f.argument()) << ")\"");
 403
 404         if (unknown) {
 405                 imagedir = "images/";
 406                 fname = imageLibFileSearch(imagedir, "unknown", "png");
 407                 if (fname.exists())
 408                         return toqstr(fname.absFileName());
 409                 return QString(":/images/unknown.png");
 410         }
 411
 412         return QString();
 413 }
 414
 415 QPixmap getPixmap(QString const & path, QString const & name, QString const & ext)
 416 {
 417         QPixmap pixmap;
 418         QString imagedir = path;
 419         FileName fname = imageLibFileSearch(imagedir, name, ext);
 420         QString path1 = toqstr(fname.absFileName());
 421         QString path2 = ":/" + path + name + "." + ext;
 422
 423         if (pixmap.load(path1)) {
 424                 return pixmap;
 425         }
 426         else if (pixmap.load(path2)) {
 427                 return pixmap;
 428         }
 429
 430         LYXERR0("Cannot load pixmap \""
 431                 << path << name << '.' << ext
 432                 << "\", please verify resource system!");
 433
 434         return QPixmap();
 435 }
 436
 437 QIcon getIcon(FuncRequest const & f, bool unknown)
 438 {
 439         QString icon = iconName(f, unknown);
 440         if (icon.isEmpty())
 441                 return QIcon();
 442
 443         //LYXERR(Debug::GUI, "Found icon: " << icon);
 444         QPixmap pm;
 445         if (!pm.load(icon)) {
 446                 LYXERR0("Cannot load icon " << icon << " please verify resource system!");
 447                 return QIcon();
 448         }
 449
 450         return QIcon(pm);
 451 }
 452
 453
 454 ////////////////////////////////////////////////////////////////////////
 455 //
 456 // LyX server support code.
 457 //
 458 ////////////////////////////////////////////////////////////////////////
 459
 460 class SocketNotifier : public QSocketNotifier
 461 {
 462 public:
 463         /// connect a connection notification from the LyXServerSocket
 464         SocketNotifier(QObject * parent, int fd, Application::SocketCallback func)
 465                 : QSocketNotifier(fd, QSocketNotifier::Read, parent), func_(func)
 466         {}
 467
 468 public:
 469         /// The callback function
 470         Application::SocketCallback func_;
 471 };
 472
 473
 474 ////////////////////////////////////////////////////////////////////////
 475 //
 476 // Mac specific stuff goes here...
 477 //
 478 ////////////////////////////////////////////////////////////////////////
 479
 480 class MenuTranslator : public QTranslator
 481 {
 482 public:
 483         MenuTranslator(QObject * parent)
 484                 : QTranslator(parent)
 485         {}
 486
 487         QString translate(const char * /*context*/,
 488           const char * sourceText,
 489           const char * /*comment*/ = 0)
 490         {
 491                 string const s = sourceText;
 492                 if (s == N_("About %1") || s == N_("Preferences")
 493                                 || s == N_("Reconfigure") || s == N_("Quit %1"))
 494                         return qt_(s);
 495                 else
 496                         return QString();
 497         }
 498 };
 499
 500 class GlobalMenuBar : public QMenuBar
 501 {
 502 public:
 503         ///
 504         GlobalMenuBar() : QMenuBar(0) {}
 505
 506         ///
 507         bool event(QEvent * e)
 508         {
 509                 if (e->type() == QEvent::ShortcutOverride) {
 510                         //          && activeWindow() == 0) {
 511                         QKeyEvent * ke = static_cast<QKeyEvent*>(e);
 512                         KeySymbol sym;
 513                         setKeySymbol(&sym, ke);
 514                         guiApp->processKeySym(sym, q_key_state(ke->modifiers()));
 515                         e->accept();
 516                         return true;
 517                 }
 518                 return false;
 519         }
 520 };
 521
 522 #ifdef Q_WS_MACX
 523 // QMacPasteboardMimeGraphics can only be compiled on Mac.
 524
 525 class QMacPasteboardMimeGraphics : public QMacPasteboardMime
 526 {
 527 public:
 528         QMacPasteboardMimeGraphics()
 529                 : QMacPasteboardMime(MIME_QT_CONVERTOR|MIME_ALL)
 530         {}
 531
 532         QString convertorName() { return "Graphics"; }
 533
 534         QString flavorFor(QString const & mime)
 535         {
 536                 LYXERR(Debug::ACTION, "flavorFor " << mime);
 537                 if (mime == pdfMimeType())
 538                         return QLatin1String("com.adobe.pdf");
 539                 return QString();
 540         }
 541
 542         QString mimeFor(QString flav)
 543         {
 544                 LYXERR(Debug::ACTION, "mimeFor " << flav);
 545                 if (flav == QLatin1String("com.adobe.pdf"))
 546                         return pdfMimeType();
 547                 return QString();
 548         }
 549
 550         bool canConvert(QString const & mime, QString flav)
 551         {
 552                 return mimeFor(flav) == mime;
 553         }
 554
 555         QVariant convertToMime(QString const & /*mime*/, QList<QByteArray> data,
 556                 QString /*flav*/)
 557         {
 558                 if(data.count() > 1)
 559                         qWarning("QMacPasteboardMimeGraphics: Cannot handle multiple member data");
 560                 return data.first();
 561         }
 562
 563         QList<QByteArray> convertFromMime(QString const & /*mime*/,
 564                 QVariant data, QString /*flav*/)
 565         {
 566                 QList<QByteArray> ret;
 567                 ret.append(data.toByteArray());
 568                 return ret;
 569         }
 570 };
 571 #endif
 572
 573 ///////////////////////////////////////////////////////////////
 574 //
 575 // You can find more platform specific stuff at the end of this file...
 576 //
 577 ///////////////////////////////////////////////////////////////
 578
 579 ////////////////////////////////////////////////////////////////////////
 580 // Windows specific stuff goes here...
 581
 582 #ifdef Q_WS_WIN
 583 // QWindowsMimeMetafile can only be compiled on Windows.
 584
 585 static FORMATETC cfFromMime(QString const & mimetype)
 586 {
 587         FORMATETC formatetc;
 588         if (mimetype == emfMimeType()) {
 589                 formatetc.cfFormat = CF_ENHMETAFILE;
 590                 formatetc.tymed = TYMED_ENHMF;
 591         } else if (mimetype == wmfMimeType()) {
 592                 formatetc.cfFormat = CF_METAFILEPICT;
 593                 formatetc.tymed = TYMED_MFPICT;
 594         }
 595         formatetc.ptd = 0;
 596         formatetc.dwAspect = DVASPECT_CONTENT;
 597         formatetc.lindex = -1;
 598         return formatetc;
 599 }
 600
 601
 602 class QWindowsMimeMetafile : public QWindowsMime {
 603 public:
 604         QWindowsMimeMetafile() {}
 605
 606         bool canConvertFromMime(FORMATETC const & formatetc,
 607                 QMimeData const * mimedata) const
 608         {
 609                 return false;
 610         }
 611
 612         bool canConvertToMime(QString const & mimetype,
 613                 IDataObject * pDataObj) const
 614         {
 615                 if (mimetype != emfMimeType() && mimetype != wmfMimeType())
 616                         return false;
 617                 FORMATETC formatetc = cfFromMime(mimetype);
 618                 return pDataObj->QueryGetData(&formatetc) == S_OK;
 619         }
 620
 621         bool convertFromMime(FORMATETC const & formatetc,
 622                 const QMimeData * mimedata, STGMEDIUM * pmedium) const
 623         {
 624                 return false;
 625         }
 626
 627         QVariant convertToMime(QString const & mimetype, IDataObject * pDataObj,
 628                 QVariant::Type preferredType) const
 629         {
 630                 QByteArray data;
 631                 if (!canConvertToMime(mimetype, pDataObj))
 632                         return data;
 633
 634                 FORMATETC formatetc = cfFromMime(mimetype);
 635                 STGMEDIUM s;
 636                 if (pDataObj->GetData(&formatetc, &s) != S_OK)
 637                         return data;
 638
 639                 int dataSize;
 640                 if (s.tymed == TYMED_ENHMF) {
 641                         dataSize = GetEnhMetaFileBits(s.hEnhMetaFile, 0, 0);
 642                         data.resize(dataSize);
 643                         dataSize = GetEnhMetaFileBits(s.hEnhMetaFile, dataSize,
 644                                 (LPBYTE)data.data());
 645                 } else if (s.tymed == TYMED_MFPICT) {
 646                         dataSize = GetMetaFileBitsEx((HMETAFILE)s.hMetaFilePict, 0, 0);
 647                         data.resize(dataSize);
 648                         dataSize = GetMetaFileBitsEx((HMETAFILE)s.hMetaFilePict, dataSize,
 649                                 (LPBYTE)data.data());
 650                 }
 651                 data.detach();
 652                 ReleaseStgMedium(&s);
 653
 654                 return data;
 655         }
 656
 657
 658         QVector<FORMATETC> formatsForMime(QString const & mimetype,
 659                 QMimeData const * mimedata) const
 660         {
 661                 QVector<FORMATETC> formats;
 662                 if (mimetype == emfMimeType() || mimetype == wmfMimeType())
 663                         formats += cfFromMime(mimetype);
 664                 return formats;
 665         }
 666
 667         QString mimeForFormat(FORMATETC const & formatetc) const
 668         {
 669                 switch (formatetc.cfFormat) {
 670                 case CF_ENHMETAFILE:
 671                         return emfMimeType();
 672                 case CF_METAFILEPICT:
 673                         return wmfMimeType();
 674                 }
 675                 return QString();
 676         }
 677 };
 678
 679 #endif // Q_WS_WIN
 680
 681
 682 /// Allows to check whether ESC was pressed during a long operation
 683 class KeyChecker : public QObject {
 684 private:
 685         bool pressed_;
 686 public:
 687         KeyChecker() {
 688                 pressed_ = false;
 689         }
 690         void start() {
 691                 QCoreApplication::instance()->installEventFilter(this);
 692                 pressed_ = false;
 693         }
 694         void stop() {
 695                 QCoreApplication::instance()->removeEventFilter(this);
 696         }
 697         bool pressed() {
 698                 QCoreApplication::processEvents();
 699                 return pressed_;
 700         }
 701         bool eventFilter(QObject *obj, QEvent *event) {
 702                 LYXERR(Debug::ACTION, "Event Type: " << event->type());
 703                 switch (event->type()) {
 704                 case QEvent::Show:
 705                 case QEvent::Hide:
 706                 case QEvent::Resize:
 707                         return QObject::eventFilter(obj, event);
 708                 default:
 709                         QKeyEvent *keyEvent = dynamic_cast<QKeyEvent*>(event);
 710                         if (keyEvent && keyEvent->key() == Qt::Key_Escape)
 711                                 pressed_ = true;
 712                         return true;
 713                 }
 714         }
 715 };
 716
 717
 718 ////////////////////////////////////////////////////////////////////////
 719 // GuiApplication::Private definition and implementation.
 720 ////////////////////////////////////////////////////////////////////////
 721
 722 struct GuiApplication::Private
 723 {
 724         Private(): language_model_(0), meta_fake_bit(NoModifier),
 725                 global_menubar_(0)
 726         {
 727         #ifdef Q_WS_WIN
 728                 /// WMF Mime handler for Windows clipboard.
 729                 wmf_mime_ = new QWindowsMimeMetafile();
 730         #endif
 731                 initKeySequences(&theTopLevelKeymap());
 732         }
 733
 734         void initKeySequences(KeyMap * kb)
 735         {
 736                 keyseq = KeySequence(kb, kb);
 737                 cancel_meta_seq = KeySequence(kb, kb);
 738         }
 739
 740         ///
 741         QSortFilterProxyModel * language_model_;
 742         ///
 743         GuiClipboard clipboard_;
 744         ///
 745         GuiSelection selection_;
 746         ///
 747         FontLoader font_loader_;
 748         ///
 749         ColorCache color_cache_;
 750         ///
 751         QTranslator qt_trans_;
 752         ///
 753         QHash<int, SocketNotifier *> socket_notifiers_;
 754         ///
 755         Menus menus_;
 756         ///
 757         /// The global instance
 758         Toolbars toolbars_;
 759
 760         /// this timer is used for any regular events one wants to
 761         /// perform. at present it is used to check if forked processes
 762         /// are done.
 763         QTimer general_timer_;
 764
 765         /// delayed FuncRequests
 766         std::queue<FuncRequest> func_request_queue_;
 767
 768         ///
 769         KeySequence keyseq;
 770         ///
 771         KeySequence cancel_meta_seq;
 772         ///
 773         KeyModifier meta_fake_bit;
 774
 775         /// Multiple views container.
 776         /**
 777         * Warning: This must not be a smart pointer as the destruction of the
 778         * object is handled by Qt when the view is closed
 779         * \sa Qt::WA_DeleteOnClose attribute.
 780         */
 781         QHash<int, GuiView *> views_;
 782
 783         /// Only used on mac.
 784         GlobalMenuBar * global_menubar_;
 785
 786 #ifdef Q_WS_MACX
 787         /// Linkback mime handler for MacOSX.
 788         QMacPasteboardMimeGraphics mac_pasteboard_mime_;
 789 #endif
 790
 791 #ifdef Q_WS_WIN
 792         /// WMF Mime handler for Windows clipboard.
 793         QWindowsMimeMetafile * wmf_mime_;
 794 #endif
 795
 796         /// Allows to check whether ESC was pressed during a long operation
 797         KeyChecker key_checker_;
 798 };
 799
 800
 801 GuiApplication * guiApp;
 802
 803 GuiApplication::~GuiApplication()
 804 {
 805 #ifdef Q_WS_MACX
 806         closeAllLinkBackLinks();
 807 #endif
 808         delete d;
 809 }
 810
 811
 812 GuiApplication::GuiApplication(int & argc, char ** argv)
 813         : QApplication(argc, argv), current_view_(0),
 814           d(new GuiApplication::Private)
 815 {
 816         QString app_name = "LyX";
 817         QCoreApplication::setOrganizationName(app_name);
 818         QCoreApplication::setOrganizationDomain("lyx.org");
 819         QCoreApplication::setApplicationName(lyx_package);
 820
 821         // Install translator for GUI elements.
 822         installTranslator(&d->qt_trans_);
 823
 824         // FIXME: quitOnLastWindowClosed is true by default. We should have a
 825         // lyxrc setting for this in order to let the application stay resident.
 826         // But then we need some kind of dock icon, at least on Windows.
 827         /*
 828         if (lyxrc.quit_on_last_window_closed)
 829                 setQuitOnLastWindowClosed(false);
 830         */
 831 #ifdef Q_WS_MACX
 832         // FIXME: Do we need a lyxrc setting for this on Mac? This behaviour
 833         // seems to be the default case for applications like LyX.
 834         setQuitOnLastWindowClosed(false);
 835         // This allows to translate the strings that appear in the LyX menu.
 836         /// A translator suitable for the entries in the LyX menu.
 837         /// Only needed with Qt/Mac.
 838         installTranslator(new MenuTranslator(this));
 839 #endif
 840
 841 #ifdef Q_WS_X11
 842         // doubleClickInterval() is 400 ms on X11 which is just too long.
 843         // On Windows and Mac OS X, the operating system's value is used.
 844         // On Microsoft Windows, calling this function sets the double
 845         // click interval for all applications. So we don't!
 846         QApplication::setDoubleClickInterval(300);
 847 #endif
 848
 849         connect(this, SIGNAL(lastWindowClosed()), this, SLOT(onLastWindowClosed()));
 850
 851         // needs to be done before reading lyxrc
 852         QWidget w;
 853         lyxrc.dpi = (w.logicalDpiX() + w.logicalDpiY()) / 2;
 854
 855         guiApp = this;
 856
 857         // Set the cache to 5120 kilobytes which corresponds to screen size of
 858         // 1280 by 1024 pixels with a color depth of 32 bits.
 859         QPixmapCache::setCacheLimit(5120);
 860
 861         // Initialize RC Fonts
 862         if (lyxrc.roman_font_name.empty())
 863                 lyxrc.roman_font_name = fromqstr(romanFontName());
 864
 865         if (lyxrc.sans_font_name.empty())
 866                 lyxrc.sans_font_name = fromqstr(sansFontName());
 867
 868         if (lyxrc.typewriter_font_name.empty())
 869                 lyxrc.typewriter_font_name = fromqstr(typewriterFontName());
 870
 871         d->general_timer_.setInterval(500);
 872         connect(&d->general_timer_, SIGNAL(timeout()),
 873                 this, SLOT(handleRegularEvents()));
 874         d->general_timer_.start();
 875
 876 #if QT_VERSION >= 0x040400
 877         // maxThreadCount() defaults in general to 2 on single or dual-processor.
 878         // This is clearly not enough in a time where we use threads for
 879         // document preview and/or export. 20 should be OK.
 880         QThreadPool::globalInstance()->setMaxThreadCount(20);
 881 #endif
 882 }
 883
 884
 885 GuiApplication * theGuiApp()
 886 {
 887         return dynamic_cast<GuiApplication *>(theApp());
 888 }
 889
 890
 891 void GuiApplication::clearSession()
 892 {
 893         QSettings settings;
 894         settings.clear();
 895 }
 896
 897
 898 docstring Application::iconName(FuncRequest const & f, bool unknown)
 899 {
 900         return qstring_to_ucs4(lyx::frontend::iconName(f, unknown));
 901 }
 902
 903
 904 FuncStatus GuiApplication::getStatus(FuncRequest const & cmd) const
 905 {
 906         FuncStatus status;
 907
 908         BufferView * bv = 0;
 909         BufferView * doc_bv = 0;
 910
 911         if (cmd.action() == LFUN_NOACTION) {
 912                 status.message(from_utf8(N_("Nothing to do")));
 913                 status.setEnabled(false);
 914         }
 915
 916         else if (cmd.action() == LFUN_UNKNOWN_ACTION) {
 917                 status.setUnknown(true);
 918                 status.message(from_utf8(N_("Unknown action")));
 919                 status.setEnabled(false);
 920         }
 921
 922         // Does the GuiApplication know something?
 923         else if (getStatus(cmd, status)) { }
 924
 925         // If we do not have a GuiView, then other functions are disabled
 926         else if (!current_view_)
 927                 status.setEnabled(false);
 928
 929         // Does the GuiView know something?
 930         else if (current_view_->getStatus(cmd, status)) { }
 931
 932         // In LyX/Mac, when a dialog is open, the menus of the
 933         // application can still be accessed without giving focus to
 934         // the main window. In this case, we want to disable the menu
 935         // entries that are buffer or view-related.
 936         //FIXME: Abdel (09/02/10) This has very bad effect on Linux, don't know why...
 937         /*
 938         else if (cmd.origin() == FuncRequest::MENU && !current_view_->hasFocus())
 939                 status.setEnabled(false);
 940         */
 941
 942         // If we do not have a BufferView, then other functions are disabled
 943         else if (!(bv = current_view_->currentBufferView()))
 944                 status.setEnabled(false);
 945
 946         // Does the current BufferView know something?
 947         else if (bv->getStatus(cmd, status)) { }
 948
 949         // Does the current Buffer know something?
 950         else if (bv->buffer().getStatus(cmd, status)) { }
 951
 952         // If we do not have a document BufferView, different from the
 953         // current BufferView, then other functions are disabled
 954         else if (!(doc_bv = current_view_->documentBufferView()) || doc_bv == bv)
 955                 status.setEnabled(false);
 956
 957         // Does the document Buffer know something?
 958         else if (doc_bv->buffer().getStatus(cmd, status)) { }
 959
 960         else {
 961                 LYXERR(Debug::ACTION, "LFUN not handled in getStatus(): " << cmd);
 962                 status.message(from_utf8(N_("Command not handled")));
 963                 status.setEnabled(false);
 964         }
 965
 966         // the default error message if we disable the command
 967         if (!status.enabled() && status.message().empty())
 968                 status.message(from_utf8(N_("Command disabled")));
 969
 970         return status;
 971 }
 972
 973
 974 bool GuiApplication::getStatus(FuncRequest const & cmd, FuncStatus & flag) const
 975 {
 976         // I would really like to avoid having this switch and rather try to
 977         // encode this in the function itself.
 978         // -- And I'd rather let an inset decide which LFUNs it is willing
 979         // to handle (Andre')
 980         bool enable = true;
 981         switch (cmd.action()) {
 982
 983         // This could be used for the no-GUI version. The GUI version is handled in
 984         // GuiView::getStatus(). See above.
 985         /*
 986         case LFUN_BUFFER_WRITE:
 987         case LFUN_BUFFER_WRITE_AS: {
 988                 Buffer * b = theBufferList().getBuffer(FileName(cmd.getArg(0)));
 989                 enable = b && (b->isUnnamed() || !b->isClean());
 990                 break;
 991         }
 992         */
 993
 994         case LFUN_BOOKMARK_GOTO: {
 995                 const unsigned int num = convert<unsigned int>(to_utf8(cmd.argument()));
 996                 enable = theSession().bookmarks().isValid(num);
 997                 break;
 998         }
 999
1000         case LFUN_BOOKMARK_CLEAR:
1001                 enable = theSession().bookmarks().hasValid();
1002                 break;
1003
1004         // this one is difficult to get right. As a half-baked
1005         // solution, we consider only the first action of the sequence
1006         case LFUN_COMMAND_SEQUENCE: {
1007                 // argument contains ';'-terminated commands
1008                 string const firstcmd = token(to_utf8(cmd.argument()), ';', 0);
1009                 FuncRequest func(lyxaction.lookupFunc(firstcmd));
1010                 func.setOrigin(cmd.origin());
1011                 flag = getStatus(func);
1012                 break;
1013         }
1014
1015         // we want to check if at least one of these is enabled
1016         case LFUN_COMMAND_ALTERNATIVES: {
1017                 // argument contains ';'-terminated commands
1018                 string arg = to_utf8(cmd.argument());
1019                 while (!arg.empty()) {
1020                         string first;
1021                         arg = split(arg, first, ';');
1022                         FuncRequest func(lyxaction.lookupFunc(first));
1023                         func.setOrigin(cmd.origin());
1024                         flag = getStatus(func);
1025                         // if this one is enabled, the whole thing is
1026                         if (flag.enabled())
1027                                 break;
1028                 }
1029                 break;
1030         }
1031
1032         case LFUN_CALL: {
1033                 FuncRequest func;
1034                 string name = to_utf8(cmd.argument());
1035                 if (theTopLevelCmdDef().lock(name, func)) {
1036                         func.setOrigin(cmd.origin());
1037                         flag = getStatus(func);
1038                         theTopLevelCmdDef().release(name);
1039                 } else {
1040                         // catch recursion or unknown command
1041                         // definition. all operations until the
1042                         // recursion or unknown command definition
1043                         // occurs are performed, so set the state to
1044                         // enabled
1045                         enable = true;
1046                 }
1047                 break;
1048         }
1049
1050         case LFUN_CURSOR_FOLLOWS_SCROLLBAR_TOGGLE:
1051         case LFUN_REPEAT:
1052         case LFUN_PREFERENCES_SAVE:
1053         case LFUN_BUFFER_SAVE_AS_DEFAULT:
1054         case LFUN_DEBUG_LEVEL_SET:
1055                 // these are handled in our dispatch()
1056                 break;
1057
1058         case LFUN_WINDOW_CLOSE:
1059                 enable = d->views_.size() > 0;
1060                 break;
1061
1062         case LFUN_BUFFER_NEW:
1063         case LFUN_BUFFER_NEW_TEMPLATE:
1064         case LFUN_FILE_OPEN:
1065         case LFUN_HELP_OPEN:
1066         case LFUN_SCREEN_FONT_UPDATE:
1067         case LFUN_SET_COLOR:
1068         case LFUN_WINDOW_NEW:
1069         case LFUN_LYX_QUIT:
1070         case LFUN_LYXRC_APPLY:
1071         case LFUN_COMMAND_PREFIX:
1072         case LFUN_CANCEL:
1073         case LFUN_META_PREFIX:
1074         case LFUN_RECONFIGURE:
1075         case LFUN_SERVER_GET_FILENAME:
1076         case LFUN_SERVER_NOTIFY:
1077                 enable = true;
1078                 break;
1079
1080         default:
1081                 return false;
1082         }
1083
1084         if (!enable)
1085                 flag.setEnabled(false);
1086         return true;
1087 }
1088
1089 /// make a post-dispatch status message
1090 static docstring makeDispatchMessage(docstring const & msg,
1091                                      FuncRequest const & cmd)
1092 {
1093         const bool verbose = (cmd.origin() == FuncRequest::MENU
1094                               || cmd.origin() == FuncRequest::TOOLBAR
1095                               || cmd.origin() == FuncRequest::COMMANDBUFFER);
1096
1097         if (cmd.action() == LFUN_SELF_INSERT || !verbose) {
1098                 LYXERR(Debug::ACTION, "dispatch msg is " << msg);
1099                 return msg;
1100         }
1101
1102         docstring dispatch_msg = msg;
1103         if (!dispatch_msg.empty())
1104                 dispatch_msg += ' ';
1105
1106         docstring comname = from_utf8(lyxaction.getActionName(cmd.action()));
1107
1108         bool argsadded = false;
1109
1110         if (!cmd.argument().empty()) {
1111                 if (cmd.action() != LFUN_UNKNOWN_ACTION) {
1112                         comname += ' ' + cmd.argument();
1113                         argsadded = true;
1114                 }
1115         }
1116         docstring const shortcuts = theTopLevelKeymap().
1117                 printBindings(cmd, KeySequence::ForGui);
1118
1119         if (!shortcuts.empty())
1120                 comname += ": " + shortcuts;
1121         else if (!argsadded && !cmd.argument().empty())
1122                 comname += ' ' + cmd.argument();
1123
1124         if (!comname.empty()) {
1125                 comname = rtrim(comname);
1126                 dispatch_msg += '(' + rtrim(comname) + ')';
1127         }
1128         LYXERR(Debug::ACTION, "verbose dispatch msg " << to_utf8(dispatch_msg));
1129         return dispatch_msg;
1130 }
1131
1132
1133 void GuiApplication::dispatch(FuncRequest const & cmd)
1134 {
1135         if (current_view_ && current_view_->currentBufferView())
1136                 current_view_->currentBufferView()->cursor().saveBeforeDispatchPosXY();
1137
1138         DispatchResult dr;
1139         // redraw the screen at the end (first of the two drawing steps).
1140         // This is done unless explicitly requested otherwise
1141         dr.screenUpdate(Update::FitCursor);
1142         dispatch(cmd, dr);
1143         updateCurrentView(cmd, dr);
1144 }
1145
1146
1147 void GuiApplication::updateCurrentView(FuncRequest const & cmd, DispatchResult & dr)
1148 {
1149         if (!current_view_)
1150                 return;
1151
1152         BufferView * bv = current_view_->currentBufferView();
1153         if (bv) {
1154                 if (dr.needBufferUpdate()) {
1155                         bv->cursor().clearBufferUpdate();
1156                         bv->buffer().updateBuffer();
1157                 }
1158                 // BufferView::update() updates the ViewMetricsInfo and
1159                 // also initializes the position cache for all insets in
1160                 // (at least partially) visible top-level paragraphs.
1161                 // We will redraw the screen only if needed.
1162                 bv->processUpdateFlags(dr.screenUpdate());
1163
1164                 // Do we have a selection?
1165                 theSelection().haveSelection(bv->cursor().selection());
1166
1167                 // update gui
1168                 current_view_->restartCursor();
1169         }
1170         if (dr.needMessageUpdate()) {
1171                 // Some messages may already be translated, so we cannot use _()
1172                 current_view_->message(makeDispatchMessage(
1173                                 translateIfPossible(dr.message()), cmd));
1174         }
1175 }
1176
1177
1178 void GuiApplication::gotoBookmark(unsigned int idx, bool openFile,
1179         bool switchToBuffer)
1180 {
1181         if (!theSession().bookmarks().isValid(idx))
1182                 return;
1183         BookmarksSection::Bookmark const & bm =
1184                 theSession().bookmarks().bookmark(idx);
1185         LASSERT(!bm.filename.empty(), /**/);
1186         string const file = bm.filename.absFileName();
1187         // if the file is not opened, open it.
1188         if (!theBufferList().exists(bm.filename)) {
1189                 if (openFile)
1190                         dispatch(FuncRequest(LFUN_FILE_OPEN, file));
1191                 else
1192                         return;
1193         }
1194         // open may fail, so we need to test it again
1195         if (!theBufferList().exists(bm.filename))
1196                 return;
1197
1198         // bm can be changed when saving
1199         BookmarksSection::Bookmark tmp = bm;
1200
1201         // Special case idx == 0 used for back-from-back jump navigation
1202         if (idx == 0)
1203                 dispatch(FuncRequest(LFUN_BOOKMARK_SAVE, "0"));
1204
1205         // if the current buffer is not that one, switch to it.
1206         BufferView * doc_bv = current_view_ ?
1207                 current_view_->documentBufferView() : 0;
1208         if (!doc_bv || doc_bv->buffer().fileName() != tmp.filename) {
1209                 if (switchToBuffer) {
1210                         dispatch(FuncRequest(LFUN_BUFFER_SWITCH, file));
1211                         if (!current_view_)
1212                                 return;
1213                         doc_bv = current_view_->documentBufferView();
1214                 } else
1215                         return;
1216         }
1217
1218         // moveToPosition try paragraph id first and then paragraph (pit, pos).
1219         if (!doc_bv->moveToPosition(
1220                         tmp.bottom_pit, tmp.bottom_pos, tmp.top_id, tmp.top_pos))
1221                 return;
1222
1223         // bm changed
1224         if (idx == 0)
1225                 return;
1226
1227         // Cursor jump succeeded!
1228         Cursor const & cur = doc_bv->cursor();
1229         pit_type new_pit = cur.pit();
1230         pos_type new_pos = cur.pos();
1231         int new_id = cur.paragraph().id();
1232
1233         // if bottom_pit, bottom_pos or top_id has been changed, update bookmark
1234         // see http://www.lyx.org/trac/ticket/3092
1235         if (bm.bottom_pit != new_pit || bm.bottom_pos != new_pos
1236                 || bm.top_id != new_id) {
1237                 const_cast<BookmarksSection::Bookmark &>(bm).updatePos(
1238                         new_pit, new_pos, new_id);
1239         }
1240 }
1241
1242 // This function runs "configure" and then rereads lyx.defaults to
1243 // reconfigure the automatic settings.
1244 void GuiApplication::reconfigure(string const & option)
1245 {
1246         // emit message signal.
1247         if (current_view_)
1248                 current_view_->message(_("Running configure..."));
1249
1250         // Run configure in user lyx directory
1251         PathChanger p(package().user_support());
1252         string configure_command = package().configure_command();
1253         configure_command += option;
1254         Systemcall one;
1255         int ret = one.startscript(Systemcall::Wait, configure_command);
1256         p.pop();
1257         // emit message signal.
1258         if (current_view_)
1259                 current_view_->message(_("Reloading configuration..."));
1260         lyxrc.read(libFileSearch(QString(), "lyxrc.defaults"), false);
1261         // Re-read packages.lst
1262         LaTeXPackages::getAvailable();
1263
1264         if (ret)
1265                 Alert::information(_("System reconfiguration failed"),
1266                            _("The system reconfiguration has failed.\n"
1267                                   "Default textclass is used but LyX may "
1268                                   "not be able to work properly.\n"
1269                                   "Please reconfigure again if needed."));
1270         else
1271                 Alert::information(_("System reconfigured"),
1272                            _("The system has been reconfigured.\n"
1273                              "You need to restart LyX to make use of any\n"
1274                              "updated document class specifications."));
1275 }
1276
1277 void GuiApplication::validateCurrentView()
1278 {
1279         if (!d->views_.empty() && !current_view_) {
1280                 // currently at least one view exists but no view has the focus.
1281                 // choose the last view to make it current.
1282                 // a view without any open document is preferred.
1283                 GuiView * candidate = 0;
1284                 QHash<int, GuiView *>::const_iterator it = d->views_.begin();
1285                 QHash<int, GuiView *>::const_iterator end = d->views_.end();
1286                 for (; it != end; ++it) {
1287                         candidate = *it;
1288                         if (!candidate->documentBufferView())
1289                                 break;
1290                 }
1291                 setCurrentView(candidate);
1292         }
1293 }
1294
1295 void GuiApplication::dispatch(FuncRequest const & cmd, DispatchResult & dr)
1296 {
1297         string const argument = to_utf8(cmd.argument());
1298         FuncCode const action = cmd.action();
1299
1300         LYXERR(Debug::ACTION, "cmd: " << cmd);
1301
1302         // we have not done anything wrong yet.
1303         dr.setError(false);
1304
1305         FuncStatus const flag = getStatus(cmd);
1306         if (!flag.enabled()) {
1307                 // We cannot use this function here
1308                 LYXERR(Debug::ACTION, "action "
1309                        << lyxaction.getActionName(action)
1310                        << " [" << action << "] is disabled at this location");
1311                 dr.setMessage(flag.message());
1312                 dr.setError(true);
1313                 dr.dispatched(false);
1314                 dr.screenUpdate(Update::None);
1315                 dr.clearBufferUpdate();
1316                 return;
1317         };
1318
1319         if (cmd.origin() == FuncRequest::LYXSERVER) {
1320                 if (current_view_ && current_view_->currentBufferView())
1321                         current_view_->currentBufferView()->cursor().saveBeforeDispatchPosXY();
1322                 // we will also need to redraw the screen at the end
1323                 dr.screenUpdate(Update::FitCursor);
1324         }
1325
1326         // Assumes that the action will be dispatched.
1327         dr.dispatched(true);
1328
1329         switch (cmd.action()) {
1330
1331         case LFUN_WINDOW_NEW:
1332                 createView(toqstr(cmd.argument()));
1333                 break;
1334
1335         case LFUN_WINDOW_CLOSE:
1336                 // update bookmark pit of the current buffer before window close
1337                 for (size_t i = 0; i < theSession().bookmarks().size(); ++i)
1338                         gotoBookmark(i+1, false, false);
1339                 // clear the last opened list, because
1340                 // maybe this will end the session
1341                 theSession().lastOpened().clear();
1342                 // check for valid current_view_
1343                 validateCurrentView();
1344                 if (current_view_)
1345                         current_view_->closeScheduled();
1346                 break;
1347
1348         case LFUN_LYX_QUIT:
1349                 // quitting is triggered by the gui code
1350                 // (leaving the event loop).
1351                 if (current_view_)
1352                         current_view_->message(from_utf8(N_("Exiting.")));
1353                 if (closeAllViews())
1354                         quit();
1355                 break;
1356
1357         case LFUN_SCREEN_FONT_UPDATE: {
1358                 // handle the screen font changes.
1359                 d->font_loader_.update();
1360                 // Backup current_view_
1361                 GuiView * view = current_view_;
1362                 // Set current_view_ to zero to forbid GuiWorkArea::redraw()
1363                 // to skip the refresh.
1364                 current_view_ = 0;
1365                 theBufferList().changed(false);
1366                 // Restore current_view_
1367                 current_view_ = view;
1368                 break;
1369         }
1370
1371         case LFUN_BUFFER_NEW:
1372                 validateCurrentView();
1373                 if (d->views_.empty()
1374                    || (!lyxrc.open_buffers_in_tabs && current_view_->documentBufferView() != 0)) {
1375                         createView(QString(), false); // keep hidden
1376                         current_view_->newDocument(to_utf8(cmd.argument()), false);
1377                         current_view_->show();
1378                         setActiveWindow(current_view_);
1379                 } else {
1380                         current_view_->newDocument(to_utf8(cmd.argument()), false);
1381                 }
1382                 break;
1383
1384         case LFUN_BUFFER_NEW_TEMPLATE:
1385                 validateCurrentView();
1386                 if (d->views_.empty()
1387                    || (!lyxrc.open_buffers_in_tabs && current_view_->documentBufferView() != 0)) {
1388                         createView();
1389                         current_view_->newDocument(to_utf8(cmd.argument()), true);
1390                         if (!current_view_->documentBufferView())
1391                                 current_view_->close();
1392                 } else {
1393                         current_view_->newDocument(to_utf8(cmd.argument()), true);
1394                 }
1395                 break;
1396
1397         case LFUN_FILE_OPEN: {
1398                 validateCurrentView();
1399                 // FIXME: create a new method shared with LFUN_HELP_OPEN.
1400                 string const fname = to_utf8(cmd.argument());
1401                 if (d->views_.empty() || (!lyxrc.open_buffers_in_tabs
1402                           && current_view_->documentBufferView() != 0)) {
1403                         // We want the ui session to be saved per document and not per
1404                         // window number. The filename crc is a good enough identifier.
1405                         boost::crc_32_type crc;
1406                         crc = for_each(fname.begin(), fname.end(), crc);
1407                         createView(crc.checksum());
1408                         current_view_->openDocument(fname);
1409                         if (current_view_ && !current_view_->documentBufferView())
1410                                 current_view_->close();
1411                 } else
1412                         current_view_->openDocument(fname);
1413                 break;
1414         }
1415
1416         case LFUN_HELP_OPEN: {
1417                 // FIXME: create a new method shared with LFUN_FILE_OPEN.
1418                 if (current_view_ == 0)
1419                         createView();
1420                 string const arg = to_utf8(cmd.argument());
1421                 if (arg.empty()) {
1422                         current_view_->message(_("Missing argument"));
1423                         break;
1424                 }
1425                 FileName fname = i18nLibFileSearch("doc", arg, "lyx");
1426                 if (fname.empty())
1427                         fname = i18nLibFileSearch("examples", arg, "lyx");
1428
1429                 if (fname.empty()) {
1430                         lyxerr << "LyX: unable to find documentation file `"
1431                                << arg << "'. Bad installation?" << endl;
1432                         break;
1433                 }
1434                 current_view_->message(bformat(_("Opening help file %1$s..."),
1435                                                makeDisplayPath(fname.absFileName())));
1436                 Buffer * buf = current_view_->loadDocument(fname, false);
1437
1438 #ifndef DEVEL_VERSION
1439                 if (buf)
1440                         buf->setReadonly(true);
1441 #else
1442                 (void) buf;
1443 #endif
1444                 break;
1445         }
1446
1447         case LFUN_SET_COLOR: {
1448                 string lyx_name;
1449                 string const x11_name = split(to_utf8(cmd.argument()), lyx_name, ' ');
1450                 if (lyx_name.empty() || x11_name.empty()) {
1451                         if (current_view_)
1452                                 current_view_->message(
1453                                         _("Syntax: set-color <lyx_name> <x11_name>"));
1454                         break;
1455                 }
1456
1457 #if 0
1458                 // FIXME: The graphics cache no longer has a changeDisplay method.
1459                 string const graphicsbg = lcolor.getLyXName(Color_graphicsbg);
1460                 bool const graphicsbg_changed =
1461                                 lyx_name == graphicsbg && x11_name != graphicsbg;
1462                 if (graphicsbg_changed)
1463                         graphics::GCache::get().changeDisplay(true);
1464 #endif
1465
1466                 if (!lcolor.setColor(lyx_name, x11_name)) {
1467                         if (current_view_)
1468                                 current_view_->message(
1469                                         bformat(_("Set-color \"%1$s\" failed "
1470                                         "- color is undefined or "
1471                                         "may not be redefined"),
1472                                         from_utf8(lyx_name)));
1473                         break;
1474                 }
1475                 // Make sure we don't keep old colors in cache.
1476                 d->color_cache_.clear();
1477                 break;
1478         }
1479
1480         case LFUN_LYXRC_APPLY: {
1481                 // reset active key sequences, since the bindings
1482                 // are updated (bug 6064)
1483                 d->keyseq.reset();
1484                 LyXRC const lyxrc_orig = lyxrc;
1485
1486                 istringstream ss(to_utf8(cmd.argument()));
1487                 bool const success = lyxrc.read(ss);
1488
1489                 if (!success) {
1490                         lyxerr << "Warning in LFUN_LYXRC_APPLY!\n"
1491                                         << "Unable to read lyxrc data"
1492                                         << endl;
1493                         break;
1494                 }
1495
1496                 actOnUpdatedPrefs(lyxrc_orig, lyxrc);
1497                 resetGui();
1498
1499                 break;
1500         }
1501
1502         case LFUN_COMMAND_PREFIX:
1503                 dispatch(FuncRequest(LFUN_MESSAGE, d->keyseq.printOptions(true)));
1504                 break;
1505
1506         case LFUN_CANCEL: {
1507                 d->keyseq.reset();
1508                 d->meta_fake_bit = NoModifier;
1509                 GuiView * gv = currentView();
1510                 if (gv && gv->currentBufferView())
1511                         // cancel any selection
1512                         processFuncRequest(FuncRequest(LFUN_MARK_OFF));
1513                 dr.setMessage(from_ascii(N_("Cancel")));
1514                 break;
1515         }
1516         case LFUN_META_PREFIX:
1517                 d->meta_fake_bit = AltModifier;
1518                 dr.setMessage(d->keyseq.print(KeySequence::ForGui));
1519                 break;
1520
1521         // --- Menus -----------------------------------------------
1522         case LFUN_RECONFIGURE:
1523                 // argument is any additional parameter to the configure.py command
1524                 reconfigure(to_utf8(cmd.argument()));
1525                 break;
1526
1527         // --- lyxserver commands ----------------------------
1528         case LFUN_SERVER_GET_FILENAME: {
1529                 if (current_view_ && current_view_->documentBufferView()) {
1530                         docstring const fname = from_utf8(
1531                                 current_view_->documentBufferView()->buffer().absFileName());
1532                         dr.setMessage(fname);
1533                         LYXERR(Debug::INFO, "FNAME[" << fname << ']');
1534                 } else {
1535                         dr.setMessage(docstring());
1536                         LYXERR(Debug::INFO, "No current file for LFUN_SERVER_GET_FILENAME");
1537                 }
1538                 break;
1539         }
1540
1541         case LFUN_SERVER_NOTIFY: {
1542                 docstring const dispatch_buffer = d->keyseq.print(KeySequence::Portable);
1543                 dr.setMessage(dispatch_buffer);
1544                 theServer().notifyClient(to_utf8(dispatch_buffer));
1545                 break;
1546         }
1547
1548         case LFUN_CURSOR_FOLLOWS_SCROLLBAR_TOGGLE:
1549                 lyxrc.cursor_follows_scrollbar = !lyxrc.cursor_follows_scrollbar;
1550                 break;
1551
1552         case LFUN_REPEAT: {
1553                 // repeat command
1554                 string countstr;
1555                 string rest = split(argument, countstr, ' ');
1556                 istringstream is(countstr);
1557                 int count = 0;
1558                 is >> count;
1559                 //lyxerr << "repeat: count: " << count << " cmd: " << rest << endl;
1560                 for (int i = 0; i < count; ++i)
1561                         dispatch(lyxaction.lookupFunc(rest));
1562                 break;
1563         }
1564
1565         case LFUN_COMMAND_SEQUENCE: {
1566                 // argument contains ';'-terminated commands
1567                 string arg = argument;
1568                 // FIXME: this LFUN should also work without any view.
1569                 Buffer * buffer = (current_view_ && current_view_->documentBufferView())
1570                                   ? &(current_view_->documentBufferView()->buffer()) : 0;
1571                 if (buffer)
1572                         buffer->undo().beginUndoGroup();
1573                 while (!arg.empty()) {
1574                         string first;
1575                         arg = split(arg, first, ';');
1576                         FuncRequest func(lyxaction.lookupFunc(first));
1577                         func.setOrigin(cmd.origin());
1578                         dispatch(func);
1579                 }
1580                 // the buffer may have been closed by one action
1581                 if (theBufferList().isLoaded(buffer))
1582                         buffer->undo().endUndoGroup();
1583                 break;
1584         }
1585
1586         case LFUN_COMMAND_ALTERNATIVES: {
1587                 // argument contains ';'-terminated commands
1588                 string arg = argument;
1589                 while (!arg.empty()) {
1590                         string first;
1591                         arg = split(arg, first, ';');
1592                         FuncRequest func(lyxaction.lookupFunc(first));
1593                         func.setOrigin(cmd.origin());
1594                         FuncStatus const stat = getStatus(func);
1595                         if (stat.enabled()) {
1596                                 dispatch(func);
1597                                 break;
1598                         }
1599                 }
1600                 break;
1601         }
1602
1603         case LFUN_CALL: {
1604                 FuncRequest func;
1605                 if (theTopLevelCmdDef().lock(argument, func)) {
1606                         func.setOrigin(cmd.origin());
1607                         dispatch(func);
1608                         theTopLevelCmdDef().release(argument);
1609                 } else {
1610                         if (func.action() == LFUN_UNKNOWN_ACTION) {
1611                                 // unknown command definition
1612                                 lyxerr << "Warning: unknown command definition `"
1613                                                 << argument << "'"
1614                                                 << endl;
1615                         } else {
1616                                 // recursion detected
1617                                 lyxerr << "Warning: Recursion in the command definition `"
1618                                                 << argument << "' detected"
1619                                                 << endl;
1620                         }
1621                 }
1622                 break;
1623         }
1624
1625         case LFUN_PREFERENCES_SAVE:
1626                 lyxrc.write(support::makeAbsPath("preferences",
1627                         package().user_support().absFileName()), false);
1628                 break;
1629
1630         case LFUN_BUFFER_SAVE_AS_DEFAULT: {
1631                 string const fname = addName(addPath(package().user_support().absFileName(),
1632                         "templates/"), "defaults.lyx");
1633                 Buffer defaults(fname);
1634
1635                 istringstream ss(argument);
1636                 Lexer lex;
1637                 lex.setStream(ss);
1638                 int const unknown_tokens = defaults.readHeader(lex);
1639
1640                 if (unknown_tokens != 0) {
1641                         lyxerr << "Warning in LFUN_BUFFER_SAVE_AS_DEFAULT!\n"
1642                                << unknown_tokens << " unknown token"
1643                                << (unknown_tokens == 1 ? "" : "s")
1644                                << endl;
1645                 }
1646
1647                 if (defaults.writeFile(FileName(defaults.absFileName())))
1648                         dr.setMessage(bformat(_("Document defaults saved in %1$s"),
1649                                               makeDisplayPath(fname)));
1650                 else {
1651                         dr.setError(true);
1652                         dr.setMessage(from_ascii(N_("Unable to save document defaults")));
1653                 }
1654                 break;
1655         }
1656
1657         case LFUN_BOOKMARK_GOTO:
1658                 // go to bookmark, open unopened file and switch to buffer if necessary
1659                 gotoBookmark(convert<unsigned int>(to_utf8(cmd.argument())), true, true);
1660                 dr.screenUpdate(Update::Force | Update::FitCursor);
1661                 break;
1662
1663         case LFUN_BOOKMARK_CLEAR:
1664                 theSession().bookmarks().clear();
1665                 break;
1666
1667         case LFUN_DEBUG_LEVEL_SET:
1668                 lyxerr.setLevel(Debug::value(to_utf8(cmd.argument())));
1669                 break;
1670
1671         default:
1672                 // The LFUN must be for one of GuiView, BufferView, Buffer or Cursor;
1673                 // let's try that:
1674                 if (current_view_)
1675                         current_view_->dispatch(cmd, dr);
1676                 break;
1677         }
1678
1679         if (cmd.origin() == FuncRequest::LYXSERVER)
1680                 updateCurrentView(cmd, dr);
1681 }
1682
1683
1684 docstring GuiApplication::viewStatusMessage()
1685 {
1686         // When meta-fake key is pressed, show the key sequence so far + "M-".
1687         if (d->meta_fake_bit != NoModifier)
1688                 return d->keyseq.print(KeySequence::ForGui) + "M-";
1689
1690         // Else, when a non-complete key sequence is pressed,
1691         // show the available options.
1692         if (d->keyseq.length() > 0 && !d->keyseq.deleted())
1693                 return d->keyseq.printOptions(true);
1694
1695         return docstring();
1696 }
1697
1698
1699 void GuiApplication::handleKeyFunc(FuncCode action)
1700 {
1701         char_type c = 0;
1702
1703         if (d->keyseq.length())
1704                 c = 0;
1705         GuiView * gv = currentView();
1706         LASSERT(gv && gv->currentBufferView(), return);
1707         BufferView * bv = gv->currentBufferView();
1708         bv->getIntl().getTransManager().deadkey(
1709                 c, get_accent(action).accent, bv->cursor().innerText(),
1710                 bv->cursor());
1711         // Need to clear, in case the minibuffer calls these
1712         // actions
1713         d->keyseq.clear();
1714         // copied verbatim from do_accent_char
1715         bv->cursor().resetAnchor();
1716 }
1717
1718
1719 void GuiApplication::processKeySym(KeySymbol const & keysym, KeyModifier state)
1720 {
1721         LYXERR(Debug::KEY, "KeySym is " << keysym.getSymbolName());
1722
1723         // Do nothing if we have nothing (JMarc)
1724         if (!keysym.isOK()) {
1725                 LYXERR(Debug::KEY, "Empty kbd action (probably composing)");
1726                 if (current_view_)
1727                         current_view_->restartCursor();
1728                 return;
1729         }
1730
1731         if (keysym.isModifier()) {
1732                 if (current_view_)
1733                         current_view_->restartCursor();
1734                 return;
1735         }
1736
1737         char_type encoded_last_key = keysym.getUCSEncoded();
1738
1739         // Do a one-deep top-level lookup for
1740         // cancel and meta-fake keys. RVDK_PATCH_5
1741         d->cancel_meta_seq.reset();
1742
1743         FuncRequest func = d->cancel_meta_seq.addkey(keysym, state);
1744         LYXERR(Debug::KEY, "action first set to [" << func.action() << ']');
1745
1746         // When not cancel or meta-fake, do the normal lookup.
1747         // Note how the meta_fake Mod1 bit is OR-ed in and reset afterwards.
1748         // Mostly, meta_fake_bit = NoModifier. RVDK_PATCH_5.
1749         if ((func.action() != LFUN_CANCEL) && (func.action() != LFUN_META_PREFIX)) {
1750                 // remove Caps Lock and Mod2 as a modifiers
1751                 func = d->keyseq.addkey(keysym, (state | d->meta_fake_bit));
1752                 LYXERR(Debug::KEY, "action now set to [" << func.action() << ']');
1753         }
1754
1755         // Dont remove this unless you know what you are doing.
1756         d->meta_fake_bit = NoModifier;
1757
1758         // Can this happen now ?
1759         if (func.action() == LFUN_NOACTION)
1760                 func = FuncRequest(LFUN_COMMAND_PREFIX);
1761
1762         LYXERR(Debug::KEY, " Key [action=" << func.action() << "]["
1763                 << d->keyseq.print(KeySequence::Portable) << ']');
1764
1765         // already here we know if it any point in going further
1766         // why not return already here if action == -1 and
1767         // num_bytes == 0? (Lgb)
1768
1769         if (d->keyseq.length() > 1 && current_view_)
1770                 current_view_->message(d->keyseq.print(KeySequence::ForGui));
1771
1772
1773         // Maybe user can only reach the key via holding down shift.
1774         // Let's see. But only if shift is the only modifier
1775         if (func.action() == LFUN_UNKNOWN_ACTION && state == ShiftModifier) {
1776                 LYXERR(Debug::KEY, "Trying without shift");
1777                 func = d->keyseq.addkey(keysym, NoModifier);
1778                 LYXERR(Debug::KEY, "Action now " << func.action());
1779         }
1780
1781         if (func.action() == LFUN_UNKNOWN_ACTION) {
1782                 // Hmm, we didn't match any of the keysequences. See
1783                 // if it's normal insertable text not already covered
1784                 // by a binding
1785                 if (keysym.isText() && d->keyseq.length() == 1) {
1786                         LYXERR(Debug::KEY, "isText() is true, inserting.");
1787                         func = FuncRequest(LFUN_SELF_INSERT,
1788                                            FuncRequest::KEYBOARD);
1789                 } else {
1790                         LYXERR(Debug::KEY, "Unknown, !isText() - giving up");
1791                         if (current_view_) {
1792                                 current_view_->message(_("Unknown function."));
1793                                 current_view_->restartCursor();
1794                         }
1795                         return;
1796                 }
1797         }
1798
1799         if (func.action() == LFUN_SELF_INSERT) {
1800                 if (encoded_last_key != 0) {
1801                         docstring const arg(1, encoded_last_key);
1802                         processFuncRequest(FuncRequest(LFUN_SELF_INSERT, arg,
1803                                              FuncRequest::KEYBOARD));
1804                         LYXERR(Debug::KEY, "SelfInsert arg[`" << to_utf8(arg) << "']");
1805                 }
1806         } else
1807                 processFuncRequest(func);
1808 }
1809
1810
1811 void GuiApplication::processFuncRequest(FuncRequest const & func)
1812 {
1813         lyx::dispatch(func);
1814 }
1815
1816
1817 void GuiApplication::processFuncRequestAsync(FuncRequest const & func)
1818 {
1819         addToFuncRequestQueue(func);
1820         processFuncRequestQueueAsync();
1821 }
1822
1823
1824 void GuiApplication::processFuncRequestQueue()
1825 {
1826         while (!d->func_request_queue_.empty()) {
1827                 processFuncRequest(d->func_request_queue_.front());
1828                 d->func_request_queue_.pop();
1829         }
1830 }
1831
1832
1833 void GuiApplication::processFuncRequestQueueAsync()
1834 {
1835         QTimer::singleShot(0, this, SLOT(slotProcessFuncRequestQueue()));
1836 }
1837
1838
1839 void GuiApplication::addToFuncRequestQueue(FuncRequest const & func)
1840 {
1841         d->func_request_queue_.push(func);
1842 }
1843
1844
1845 void GuiApplication::resetGui()
1846 {
1847         // Set the language defined by the user.
1848         setGuiLanguage();
1849
1850         // Read menus
1851         if (!readUIFile(toqstr(lyxrc.ui_file)))
1852                 // Gives some error box here.
1853                 return;
1854
1855         if (d->global_menubar_)
1856                 d->menus_.fillMenuBar(d->global_menubar_, 0, false);
1857
1858         QHash<int, GuiView *>::iterator it;
1859         for (it = d->views_.begin(); it != d->views_.end(); ++it) {
1860                 GuiView * gv = *it;
1861                 setCurrentView(gv);
1862                 gv->setLayoutDirection(layoutDirection());
1863                 gv->resetDialogs();
1864         }
1865
1866         processFuncRequest(FuncRequest(LFUN_SCREEN_FONT_UPDATE));
1867 }
1868
1869
1870 void GuiApplication::createView(int view_id)
1871 {
1872         createView(QString(), true, view_id);
1873 }
1874
1875
1876 void GuiApplication::createView(QString const & geometry_arg, bool autoShow,
1877         int view_id)
1878 {
1879         // release the keyboard which might have been grabed by the global
1880         // menubar on Mac to catch shortcuts even without any GuiView.
1881         if (d->global_menubar_)
1882                 d->global_menubar_->releaseKeyboard();
1883
1884         // create new view
1885         int id = view_id;
1886         while (d->views_.find(id) != d->views_.end())
1887                 id++;
1888
1889         LYXERR(Debug::GUI, "About to create new window with ID " << id);
1890         GuiView * view = new GuiView(id);
1891         // register view
1892         d->views_[id] = view;
1893
1894         if (autoShow) {
1895                 view->show();
1896                 setActiveWindow(view);
1897         }
1898
1899         if (!geometry_arg.isEmpty()) {
1900 #ifdef Q_WS_WIN
1901                 int x, y;
1902                 int w, h;
1903                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
1904                 re.indexIn(geometry_arg);
1905                 w = re.cap(1).toInt();
1906                 h = re.cap(2).toInt();
1907                 x = re.cap(3).toInt();
1908                 y = re.cap(4).toInt();
1909                 view->setGeometry(x, y, w, h);
1910 #endif
1911         }
1912         view->setFocus();
1913 }
1914
1915
1916 Clipboard & GuiApplication::clipboard()
1917 {
1918         return d->clipboard_;
1919 }
1920
1921
1922 Selection & GuiApplication::selection()
1923 {
1924         return d->selection_;
1925 }
1926
1927
1928 FontLoader & GuiApplication::fontLoader()
1929 {
1930         return d->font_loader_;
1931 }
1932
1933
1934 Toolbars const & GuiApplication::toolbars() const
1935 {
1936         return d->toolbars_;
1937 }
1938
1939
1940 Toolbars & GuiApplication::toolbars()
1941 {
1942         return d->toolbars_;
1943 }
1944
1945
1946 Menus const & GuiApplication::menus() const
1947 {
1948         return d->menus_;
1949 }
1950
1951
1952 Menus & GuiApplication::menus()
1953 {
1954         return d->menus_;
1955 }
1956
1957
1958 QList<int> GuiApplication::viewIds() const
1959 {
1960         return d->views_.keys();
1961 }
1962
1963
1964 ColorCache & GuiApplication::colorCache()
1965 {
1966         return d->color_cache_;
1967 }
1968
1969
1970 int GuiApplication::exec()
1971 {
1972         // asynchronously handle batch commands. This event will be in
1973         // the event queue in front of other asynchronous events. Hence,
1974         // we can assume in the latter that the gui is setup already.
1975         QTimer::singleShot(0, this, SLOT(execBatchCommands()));
1976
1977         return QApplication::exec();
1978 }
1979
1980
1981 void GuiApplication::exit(int status)
1982 {
1983         QApplication::exit(status);
1984 }
1985
1986
1987 void GuiApplication::setGuiLanguage()
1988 {
1989         // Set the language defined by the user.
1990         setRcGuiLanguage();
1991
1992         QString const default_language = toqstr(Messages::defaultLanguage());
1993         LYXERR(Debug::LOCALE, "Trying to set default locale to: " << default_language);
1994         QLocale const default_locale(default_language);
1995         QLocale::setDefault(default_locale);
1996
1997         // install translation file for Qt built-in dialogs
1998         QString const language_name = QString("qt_") + default_locale.name();
1999
2000         // language_name can be short (e.g. qt_zh) or long (e.g. qt_zh_CN).
2001         // Short-named translator can be loaded from a long name, but not the
2002         // opposite. Therefore, long name should be used without truncation.
2003         // c.f. http://doc.trolltech.com/4.1/qtranslator.html#load
2004         if (!d->qt_trans_.load(language_name,
2005                         QLibraryInfo::location(QLibraryInfo::TranslationsPath))) {
2006                 LYXERR(Debug::LOCALE, "Could not find Qt translations for locale "
2007                         << language_name);
2008         } else {
2009                 LYXERR(Debug::LOCALE, "Successfully installed Qt translations for locale "
2010                         << language_name);
2011         }
2012
2013         switch (default_locale.language()) {
2014         case QLocale::Arabic :
2015         case QLocale::Hebrew :
2016         case QLocale::Persian :
2017         case QLocale::Urdu :
2018                 setLayoutDirection(Qt::RightToLeft);
2019                 break;
2020         default:
2021                 setLayoutDirection(Qt::LeftToRight);
2022         }
2023 }
2024
2025
2026 void GuiApplication::execBatchCommands()
2027 {
2028         setGuiLanguage();
2029
2030         // Read menus
2031         if (!readUIFile(toqstr(lyxrc.ui_file)))
2032                 // Gives some error box here.
2033                 return;
2034
2035 #ifdef Q_WS_MACX
2036 #if QT_VERSION > 0x040600
2037         setAttribute(Qt::AA_MacDontSwapCtrlAndMeta,lyxrc.mac_dontswap_ctrl_meta);
2038 #endif
2039         // Create the global default menubar which is shown for the dialogs
2040         // and if no GuiView is visible.
2041         // This must be done after the session was recovered to know the "last files".
2042         d->global_menubar_ = new GlobalMenuBar();
2043         d->menus_.fillMenuBar(d->global_menubar_, 0, true);
2044 #endif
2045
2046         lyx::execBatchCommands();
2047 }
2048
2049
2050 QAbstractItemModel * GuiApplication::languageModel()
2051 {
2052         if (d->language_model_)
2053                 return d->language_model_;
2054
2055         QStandardItemModel * lang_model = new QStandardItemModel(this);
2056         lang_model->insertColumns(0, 3);
2057         int current_row;
2058         QIcon speller(getPixmap("images/", "dialog-show_spellchecker", "png"));
2059         QIcon saurus(getPixmap("images/", "thesaurus-entry", "png"));
2060         Languages::const_iterator it = lyx::languages.begin();
2061         Languages::const_iterator end = lyx::languages.end();
2062         for (; it != end; ++it) {
2063                 current_row = lang_model->rowCount();
2064                 lang_model->insertRows(current_row, 1);
2065                 QModelIndex pl_item = lang_model->index(current_row, 0);
2066                 QModelIndex sp_item = lang_model->index(current_row, 1);
2067                 QModelIndex th_item = lang_model->index(current_row, 2);
2068                 lang_model->setData(pl_item, qt_(it->second.display()), Qt::DisplayRole);
2069                 lang_model->setData(pl_item, toqstr(it->second.lang()), Qt::UserRole);
2070                 lang_model->setData(sp_item, qt_(it->second.display()), Qt::DisplayRole);
2071                 lang_model->setData(sp_item, toqstr(it->second.lang()), Qt::UserRole);
2072                 if (theSpellChecker() && theSpellChecker()->hasDictionary(&it->second))
2073                         lang_model->setData(sp_item, speller, Qt::DecorationRole);
2074                 lang_model->setData(th_item, qt_(it->second.display()), Qt::DisplayRole);
2075                 lang_model->setData(th_item, toqstr(it->second.lang()), Qt::UserRole);
2076                 if (thesaurus.thesaurusInstalled(from_ascii(it->second.code())))
2077                         lang_model->setData(th_item, saurus, Qt::DecorationRole);
2078         }
2079         d->language_model_ = new QSortFilterProxyModel(this);
2080         d->language_model_->setSourceModel(lang_model);
2081 #if QT_VERSION >= 0x040300
2082         d->language_model_->setSortLocaleAware(true);
2083 #endif
2084         return d->language_model_;
2085 }
2086
2087
2088 void GuiApplication::restoreGuiSession()
2089 {
2090         if (!lyxrc.load_session)
2091                 return;
2092
2093         Session & session = theSession();
2094         LastOpenedSection::LastOpened const & lastopened =
2095                 session.lastOpened().getfiles();
2096
2097         validateCurrentView();
2098
2099         FileName active_file;
2100         // do not add to the lastfile list since these files are restored from
2101         // last session, and should be already there (regular files), or should
2102         // not be added at all (help files).
2103         for (size_t i = 0; i < lastopened.size(); ++i) {
2104                 FileName const & file_name = lastopened[i].file_name;
2105                 if (d->views_.empty() || (!lyxrc.open_buffers_in_tabs
2106                           && current_view_->documentBufferView() != 0)) {
2107                         boost::crc_32_type crc;
2108                         string const & fname = file_name.absFileName();
2109                         crc = for_each(fname.begin(), fname.end(), crc);
2110                         createView(crc.checksum());
2111                 }
2112                 current_view_->loadDocument(file_name, false);
2113
2114                 if (lastopened[i].active)
2115                         active_file = file_name;
2116         }
2117
2118         // Restore last active buffer
2119         Buffer * buffer = theBufferList().getBuffer(active_file);
2120         if (buffer && current_view_)
2121                 current_view_->setBuffer(buffer);
2122
2123         // clear this list to save a few bytes of RAM
2124         session.lastOpened().clear();
2125 }
2126
2127
2128 QString const GuiApplication::romanFontName()
2129 {
2130         QFont font;
2131         font.setKerning(false);
2132         font.setStyleHint(QFont::Serif);
2133         font.setFamily("serif");
2134
2135         return QFontInfo(font).family();
2136 }
2137
2138
2139 QString const GuiApplication::sansFontName()
2140 {
2141         QFont font;
2142         font.setKerning(false);
2143         font.setStyleHint(QFont::SansSerif);
2144         font.setFamily("sans");
2145
2146         return QFontInfo(font).family();
2147 }
2148
2149
2150 QString const GuiApplication::typewriterFontName()
2151 {
2152         QFont font;
2153         font.setKerning(false);
2154         font.setStyleHint(QFont::TypeWriter);
2155         font.setFamily("monospace");
2156
2157         return QFontInfo(font).family();
2158 }
2159
2160
2161 void GuiApplication::handleRegularEvents()
2162 {
2163         ForkedCallsController::handleCompletedProcesses();
2164 }
2165
2166
2167 bool GuiApplication::event(QEvent * e)
2168 {
2169         switch(e->type()) {
2170         case QEvent::FileOpen: {
2171                 // Open a file; this happens only on Mac OS X for now.
2172                 //
2173                 // We do this asynchronously because on startup the batch
2174                 // commands are not executed here yet and the gui is not ready
2175                 // therefore.
2176                 QFileOpenEvent * foe = static_cast<QFileOpenEvent *>(e);
2177                 FuncRequest const fr(LFUN_FILE_OPEN, qstring_to_ucs4(foe->file()));
2178                 processFuncRequestAsync(fr);
2179                 e->accept();
2180                 return true;
2181         }
2182         default:
2183                 return QApplication::event(e);
2184         }
2185 }
2186
2187
2188 bool GuiApplication::notify(QObject * receiver, QEvent * event)
2189 {
2190         try {
2191                 return QApplication::notify(receiver, event);
2192         }
2193         catch (ExceptionMessage const & e) {
2194                 switch(e.type_) {
2195                 case ErrorException:
2196                         emergencyCleanup();
2197                         setQuitOnLastWindowClosed(false);
2198                         closeAllViews();
2199                         Alert::error(e.title_, e.details_);
2200 #ifndef NDEBUG
2201                         // Properly crash in debug mode in order to get a useful backtrace.
2202                         abort();
2203 #endif
2204                         // In release mode, try to exit gracefully.
2205                         this->exit(1);
2206
2207                 case BufferException: {
2208                         if (!current_view_ || !current_view_->documentBufferView())
2209                                 return false;
2210                         Buffer * buf = &current_view_->documentBufferView()->buffer();
2211                         docstring details = e.details_ + '\n';
2212                         details += buf->emergencyWrite();
2213                         theBufferList().release(buf);
2214                         details += "\n" + _("The current document was closed.");
2215                         Alert::error(e.title_, details);
2216                         return false;
2217                 }
2218                 case WarningException:
2219                         Alert::warning(e.title_, e.details_);
2220                         return false;
2221                 }
2222         }
2223         catch (exception const & e) {
2224                 docstring s = _("LyX has caught an exception, it will now "
2225                         "attempt to save all unsaved documents and exit."
2226                         "\n\nException: ");
2227                 s += from_ascii(e.what());
2228                 Alert::error(_("Software exception Detected"), s);
2229                 lyx_exit(1);
2230         }
2231         catch (...) {
2232                 docstring s = _("LyX has caught some really weird exception, it will "
2233                         "now attempt to save all unsaved documents and exit.");
2234                 Alert::error(_("Software exception Detected"), s);
2235                 lyx_exit(1);
2236         }
2237
2238         return false;
2239 }
2240
2241
2242 bool GuiApplication::getRgbColor(ColorCode col, RGBColor & rgbcol)
2243 {
2244         QColor const & qcol = d->color_cache_.get(col);
2245         if (!qcol.isValid()) {
2246                 rgbcol.r = 0;
2247                 rgbcol.g = 0;
2248                 rgbcol.b = 0;
2249                 return false;
2250         }
2251         rgbcol.r = qcol.red();
2252         rgbcol.g = qcol.green();
2253         rgbcol.b = qcol.blue();
2254         return true;
2255 }
2256
2257
2258 bool Application::getRgbColorUncached(ColorCode col, RGBColor & rgbcol)
2259 {
2260         QColor const qcol(lcolor.getX11Name(col).c_str());
2261         if (!qcol.isValid()) {
2262                 rgbcol.r = 0;
2263                 rgbcol.g = 0;
2264                 rgbcol.b = 0;
2265                 return false;
2266         }
2267         rgbcol.r = qcol.red();
2268         rgbcol.g = qcol.green();
2269         rgbcol.b = qcol.blue();
2270         return true;
2271 }
2272
2273
2274 string const GuiApplication::hexName(ColorCode col)
2275 {
2276         return ltrim(fromqstr(d->color_cache_.get(col).name()), "#");
2277 }
2278
2279
2280 void GuiApplication::registerSocketCallback(int fd, SocketCallback func)
2281 {
2282         SocketNotifier * sn = new SocketNotifier(this, fd, func);
2283         d->socket_notifiers_[fd] = sn;
2284         connect(sn, SIGNAL(activated(int)), this, SLOT(socketDataReceived(int)));
2285 }
2286
2287
2288 void GuiApplication::socketDataReceived(int fd)
2289 {
2290         d->socket_notifiers_[fd]->func_();
2291 }
2292
2293
2294 void GuiApplication::unregisterSocketCallback(int fd)
2295 {
2296         d->socket_notifiers_.take(fd)->setEnabled(false);
2297 }
2298
2299
2300 void GuiApplication::commitData(QSessionManager & sm)
2301 {
2302         /// The implementation is required to avoid an application exit
2303         /// when session state save is triggered by session manager.
2304         /// The default implementation sends a close event to all
2305         /// visible top level widgets when session managment allows
2306         /// interaction.
2307         /// We are changing that to close all wiew one by one.
2308         /// FIXME: verify if the default implementation is enough now.
2309         #ifdef QT_NO_SESSIONMANAGER
2310                 #ifndef _MSC_VER
2311                         #warning Qt is compiled without session manager
2312                 #else
2313                         #pragma message("warning: Qt is compiled without session manager")
2314                 #endif
2315                 (void) sm;
2316         #else
2317                 if (sm.allowsInteraction() && !closeAllViews())
2318                         sm.cancel();
2319         #endif
2320 }
2321
2322
2323 void GuiApplication::unregisterView(GuiView * gv)
2324 {
2325         LASSERT(d->views_[gv->id()] == gv, /**/);
2326         d->views_.remove(gv->id());
2327         if (current_view_ == gv)
2328                 current_view_ = 0;
2329 }
2330
2331
2332 bool GuiApplication::closeAllViews()
2333 {
2334         if (d->views_.empty())
2335                 return true;
2336
2337         // When a view/window was closed before without quitting LyX, there
2338         // are already entries in the lastOpened list.
2339         theSession().lastOpened().clear();
2340
2341         QList<GuiView *> views = d->views_.values();
2342         foreach (GuiView * view, views) {
2343                 if (!view->closeScheduled())
2344                         return false;
2345         }
2346
2347         d->views_.clear();
2348         return true;
2349 }
2350
2351
2352 GuiView & GuiApplication::view(int id) const
2353 {
2354         LASSERT(d->views_.contains(id), /**/);
2355         return *d->views_.value(id);
2356 }
2357
2358
2359 void GuiApplication::hideDialogs(string const & name, Inset * inset) const
2360 {
2361         QList<GuiView *> views = d->views_.values();
2362         foreach (GuiView * view, views)
2363                 view->hideDialog(name, inset);
2364 }
2365
2366
2367 Buffer const * GuiApplication::updateInset(Inset const * inset) const
2368 {
2369         Buffer const * buffer_ = 0;
2370         QHash<int, GuiView *>::iterator end = d->views_.end();
2371         for (QHash<int, GuiView *>::iterator it = d->views_.begin(); it != end; ++it) {
2372                 if (Buffer const * ptr = (*it)->updateInset(inset))
2373                         buffer_ = ptr;
2374         }
2375         return buffer_;
2376 }
2377
2378
2379 bool GuiApplication::searchMenu(FuncRequest const & func,
2380         docstring_list & names) const
2381 {
2382         return d->menus_.searchMenu(func, names);
2383 }
2384
2385
2386 // Ensure that a file is read only once (prevents include loops)
2387 static QStringList uifiles;
2388 // store which ui files define Toolbars
2389 static QStringList toolbar_uifiles;
2390
2391
2392 GuiApplication::ReturnValues GuiApplication::readUIFile(FileName ui_path)
2393 {
2394         enum {
2395                 ui_menuset = 1,
2396                 ui_toolbars,
2397                 ui_toolbarset,
2398                 ui_include,
2399                 ui_format,
2400                 ui_last
2401         };
2402
2403         LexerKeyword uitags[] = {
2404                 { "format", ui_format },
2405                 { "include", ui_include },
2406                 { "menuset", ui_menuset },
2407                 { "toolbars", ui_toolbars },
2408                 { "toolbarset", ui_toolbarset }
2409         };
2410
2411         Lexer lex(uitags);
2412         lex.setFile(ui_path);
2413         if (!lex.isOK()) {
2414                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
2415                                          << endl;
2416         }
2417
2418         if (lyxerr.debugging(Debug::PARSER))
2419                 lex.printTable(lyxerr);
2420
2421         bool error = false;
2422         // format before introduction of format tag
2423         unsigned int format = 0;
2424         while (lex.isOK()) {
2425                 int const status = lex.lex();
2426
2427                 // we have to do this check here, outside the switch,
2428                 // because otherwise we would start reading include files,
2429                 // e.g., if the first tag we hit was an include tag.
2430                 if (status == ui_format)
2431                         if (lex.next()) {
2432                                 format = lex.getInteger();
2433                                 continue;
2434                         }
2435
2436                 // this will trigger unless the first tag we hit is a format
2437                 // tag, with the right format.
2438                 if (format != LFUN_FORMAT)
2439                         return FormatMismatch;
2440
2441                 switch (status) {
2442                 case Lexer::LEX_FEOF:
2443                         continue;
2444
2445                 case ui_include: {
2446                         lex.next(true);
2447                         QString const file = toqstr(lex.getString());
2448                         bool const success = readUIFile(file, true);
2449                         if (!success) {
2450                                 LYXERR0("Failed to read inlcuded file: " << fromqstr(file));
2451                                 return ReadError;
2452                         }
2453                         break;
2454                 }
2455
2456                 case ui_menuset:
2457                         d->menus_.read(lex);
2458                         break;
2459
2460                 case ui_toolbarset:
2461                         d->toolbars_.readToolbars(lex);
2462                         break;
2463
2464                 case ui_toolbars:
2465                         d->toolbars_.readToolbarSettings(lex);
2466                         toolbar_uifiles.push_back(toqstr(ui_path.absFileName()));
2467                         break;
2468
2469                 default:
2470                         if (!rtrim(lex.getString()).empty())
2471                                 lex.printError("LyX::ReadUIFile: "
2472                                                "Unknown menu tag: `$$Token'");
2473                         else
2474                                 LYXERR0("Error with status: " << status);
2475                         error = true;
2476                         break;
2477                 }
2478
2479         }
2480         return (error ? ReadError : ReadOK);
2481 }
2482
2483
2484 bool GuiApplication::readUIFile(QString const & name, bool include)
2485 {
2486         LYXERR(Debug::INIT, "About to read " << name << "...");
2487
2488         FileName ui_path;
2489         if (include) {
2490                 ui_path = libFileSearch("ui", name, "inc");
2491                 if (ui_path.empty())
2492                         ui_path = libFileSearch("ui", changeExtension(name, "inc"));
2493         } else {
2494                 ui_path = libFileSearch("ui", name, "ui");
2495         }
2496
2497         if (ui_path.empty()) {
2498                 static const QString defaultUIFile = "default";
2499                 LYXERR(Debug::INIT, "Could not find " << name);
2500                 if (include) {
2501                         Alert::warning(_("Could not find UI definition file"),
2502                                 bformat(_("Error while reading the included file\n%1$s\n"
2503                                         "Please check your installation."), qstring_to_ucs4(name)));
2504                         return false;
2505                 }
2506                 if (name == defaultUIFile) {
2507                         LYXERR(Debug::INIT, "Could not find default UI file!!");
2508                         Alert::warning(_("Could not find default UI file"),
2509                                 _("LyX could not find the default UI file!\n"
2510                                   "Please check your installation."));
2511                         return false;
2512                 }
2513                 Alert::warning(_("Could not find UI definition file"),
2514                 bformat(_("Error while reading the configuration file\n%1$s\n"
2515                         "Falling back to default.\n"
2516                         "Please look under Tools>Preferences>User Interface and\n"
2517                         "check which User Interface file you are using."), qstring_to_ucs4(name)));
2518                 return readUIFile(defaultUIFile, false);
2519         }
2520
2521         QString const uifile = toqstr(ui_path.absFileName());
2522         if (uifiles.contains(uifile)) {
2523                 if (!include) {
2524                         // We are reading again the top uifile so reset the safeguard:
2525                         uifiles.clear();
2526                         d->menus_.reset();
2527                         d->toolbars_.reset();
2528                 } else {
2529                         LYXERR(Debug::INIT, "UI file '" << name << "' has been read already. "
2530                                 << "Is this an include loop?");
2531                         return false;
2532                 }
2533         }
2534         uifiles.push_back(uifile);
2535
2536         LYXERR(Debug::INIT, "Found " << name << " in " << ui_path);
2537
2538         ReturnValues retval = readUIFile(ui_path);
2539
2540         if (retval == FormatMismatch) {
2541                 LYXERR(Debug::FILES, "Converting ui file to format " << LFUN_FORMAT);
2542                 FileName const tempfile = FileName::tempName("convert_ui");
2543                 bool const success = prefs2prefs(ui_path, tempfile, true);
2544                 if (!success) {
2545                         LYXERR0("Unable to convert " << ui_path.absFileName() <<
2546                                 " to format " << LFUN_FORMAT << ".");
2547                 } else {
2548                         retval = readUIFile(tempfile);
2549                         tempfile.removeFile();
2550                 }
2551         }
2552
2553         if (retval != ReadOK) {
2554                 LYXERR0("Unable to read UI file: " << ui_path.absFileName());
2555                 return false;
2556         }
2557
2558         if (include)
2559                 return true;
2560
2561         QSettings settings;
2562         settings.beginGroup("ui_files");
2563         bool touched = false;
2564         for (int i = 0; i != uifiles.size(); ++i) {
2565                 QFileInfo fi(uifiles[i]);
2566                 QDateTime const date_value = fi.lastModified();
2567                 QString const name_key = QString::number(i);
2568                 // if an ui file which defines Toolbars has changed,
2569                 // we have to reset the settings
2570                 if (toolbar_uifiles.contains(uifiles[i])
2571                  && (!settings.contains(name_key)
2572                  || settings.value(name_key).toString() != uifiles[i]
2573                  || settings.value(name_key + "/date").toDateTime() != date_value)) {
2574                         touched = true;
2575                         settings.setValue(name_key, uifiles[i]);
2576                         settings.setValue(name_key + "/date", date_value);
2577                 }
2578         }
2579         settings.endGroup();
2580         if (touched)
2581                 settings.remove("views");
2582
2583         return true;
2584 }
2585
2586
2587 void GuiApplication::onLastWindowClosed()
2588 {
2589         if (d->global_menubar_)
2590                 d->global_menubar_->grabKeyboard();
2591 }
2592
2593
2594 void GuiApplication::startLongOperation() {
2595         d->key_checker_.start();
2596 }
2597
2598
2599 bool GuiApplication::longOperationCancelled() {
2600         return d->key_checker_.pressed();
2601 }
2602
2603
2604 void GuiApplication::stopLongOperation() {
2605         d->key_checker_.stop();
2606 }
2607
2608
2609 ////////////////////////////////////////////////////////////////////////
2610 //
2611 // X11 specific stuff goes here...
2612
2613 #ifdef Q_WS_X11
2614 bool GuiApplication::x11EventFilter(XEvent * xev)
2615 {
2616         if (!current_view_)
2617                 return false;
2618
2619         switch (xev->type) {
2620         case SelectionRequest: {
2621                 if (xev->xselectionrequest.selection != XA_PRIMARY)
2622                         break;
2623                 LYXERR(Debug::SELECTION, "X requested selection.");
2624                 BufferView * bv = current_view_->currentBufferView();
2625                 if (bv) {
2626                         docstring const sel = bv->requestSelection();
2627                         if (!sel.empty())
2628                                 d->selection_.put(sel);
2629                 }
2630                 break;
2631         }
2632         case SelectionClear: {
2633                 if (xev->xselectionclear.selection != XA_PRIMARY)
2634                         break;
2635                 LYXERR(Debug::SELECTION, "Lost selection.");
2636                 BufferView * bv = current_view_->currentBufferView();
2637                 if (bv)
2638                         bv->clearSelection();
2639                 break;
2640         }
2641         }
2642         return false;
2643 }
2644 #endif
2645
2646 } // namespace frontend
2647
2648
2649 void hideDialogs(std::string const & name, Inset * inset)
2650 {
2651         if (theApp())
2652                 frontend::guiApp->hideDialogs(name, inset);
2653 }
2654
2655
2656 ////////////////////////////////////////////////////////////////////
2657 //
2658 // Font stuff
2659 //
2660 ////////////////////////////////////////////////////////////////////
2661
2662 frontend::FontLoader & theFontLoader()
2663 {
2664         LASSERT(frontend::guiApp, /**/);
2665         return frontend::guiApp->fontLoader();
2666 }
2667
2668
2669 frontend::FontMetrics const & theFontMetrics(Font const & f)
2670 {
2671         return theFontMetrics(f.fontInfo());
2672 }
2673
2674
2675 frontend::FontMetrics const & theFontMetrics(FontInfo const & f)
2676 {
2677         LASSERT(frontend::guiApp, /**/);
2678         return frontend::guiApp->fontLoader().metrics(f);
2679 }
2680
2681
2682 ////////////////////////////////////////////////////////////////////
2683 //
2684 // Misc stuff
2685 //
2686 ////////////////////////////////////////////////////////////////////
2687
2688 frontend::Clipboard & theClipboard()
2689 {
2690         LASSERT(frontend::guiApp, /**/);
2691         return frontend::guiApp->clipboard();
2692 }
2693
2694
2695 frontend::Selection & theSelection()
2696 {
2697         LASSERT(frontend::guiApp, /**/);
2698         return frontend::guiApp->selection();
2699 }
2700
2701
2702 } // namespace lyx
2703
2704 #include "moc_GuiApplication.cpp"