src/frontends/qt4/GuiApplication.cpp

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