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 namespace {
 763 void setColor(ColorCode code, QPalette const & pal, QPalette::ColorRole cr)
 764 {
 765         lcolor.setColor(code, fromqstr(pal.brush(QPalette::Active, cr).color().name()));
 766 }
 767 }
 768
 769 GuiApplication::GuiApplication(int & argc, char ** argv)
 770         : QApplication(argc, argv), current_view_(0),
 771           d(new GuiApplication::Private)
 772 {
 773         QString app_name = "LyX";
 774         QCoreApplication::setOrganizationName(app_name);
 775         QCoreApplication::setOrganizationDomain("lyx.org");
 776         QCoreApplication::setApplicationName(lyx_package);
 777
 778         // Install translator for GUI elements.
 779         installTranslator(&d->qt_trans_);
 780
 781         // FIXME: quitOnLastWindowClosed is true by default. We should have a
 782         // lyxrc setting for this in order to let the application stay resident.
 783         // But then we need some kind of dock icon, at least on Windows.
 784         /*
 785         if (lyxrc.quit_on_last_window_closed)
 786                 setQuitOnLastWindowClosed(false);
 787         */
 788 #ifdef Q_WS_MACX
 789         // FIXME: Do we need a lyxrc setting for this on Mac? This behaviour
 790         // seems to be the default case for applications like LyX.
 791         setQuitOnLastWindowClosed(false);
 792         // setAttribute(Qt::AA_MacDontSwapCtrlAndMeta);
 793
 794         // This allows to translate the strings that appear in the LyX menu.
 795         /// A translator suitable for the entries in the LyX menu.
 796         /// Only needed with Qt/Mac.
 797         installTranslator(new MenuTranslator(this));
 798 #endif
 799
 800 #ifdef Q_WS_X11
 801         // doubleClickInterval() is 400 ms on X11 which is just too long.
 802         // On Windows and Mac OS X, the operating system's value is used.
 803         // On Microsoft Windows, calling this function sets the double
 804         // click interval for all applications. So we don't!
 805         QApplication::setDoubleClickInterval(300);
 806 #endif
 807
 808         connect(this, SIGNAL(lastWindowClosed()), this, SLOT(onLastWindowClosed()));
 809
 810         // needs to be done before reading lyxrc
 811         QWidget w;
 812         lyxrc.dpi = (w.logicalDpiX() + w.logicalDpiY()) / 2;
 813
 814         guiApp = this;
 815
 816         // Set the cache to 5120 kilobytes which corresponds to screen size of
 817         // 1280 by 1024 pixels with a color depth of 32 bits.
 818         QPixmapCache::setCacheLimit(5120);
 819
 820         // Initialize RC Fonts
 821         if (lyxrc.roman_font_name.empty())
 822                 lyxrc.roman_font_name = fromqstr(romanFontName());
 823
 824         if (lyxrc.sans_font_name.empty())
 825                 lyxrc.sans_font_name = fromqstr(sansFontName());
 826
 827         if (lyxrc.typewriter_font_name.empty())
 828                 lyxrc.typewriter_font_name = fromqstr(typewriterFontName());
 829
 830         // initialize colors
 831         setColor(Color_background, palette(), QPalette::Base);
 832         setColor(Color_foreground, palette(), QPalette::Text);
 833         setColor(Color_selection, palette(), QPalette::Highlight);
 834         setColor(Color_selectiontext, palette(), QPalette::HighlightedText);
 835
 836         d->general_timer_.setInterval(500);
 837         connect(&d->general_timer_, SIGNAL(timeout()),
 838                 this, SLOT(handleRegularEvents()));
 839         d->general_timer_.start();
 840
 841 #if QT_VERSION >= 0x040400
 842         // maxThreadCount() defaults in general to 2 on single or dual-processor.
 843         // This is clearly not enough in a time where we use threads for
 844         // document preview and/or export. 20 should be OK.
 845         QThreadPool::globalInstance()->setMaxThreadCount(20);
 846 #endif
 847 }
 848
 849
 850 GuiApplication * theGuiApp()
 851 {
 852         return dynamic_cast<GuiApplication *>(theApp());
 853 }
 854
 855
 856 void GuiApplication::clearSession()
 857 {
 858         QSettings settings;
 859         settings.clear();
 860 }
 861
 862
 863 docstring GuiApplication::iconName(FuncRequest const & f, bool unknown)
 864 {
 865         return qstring_to_ucs4(lyx::frontend::iconName(f, unknown));
 866 }
 867
 868
 869 FuncStatus GuiApplication::getStatus(FuncRequest const & cmd) const
 870 {
 871         FuncStatus status;
 872
 873         BufferView * bv = 0;
 874         BufferView * doc_bv = 0;
 875
 876         if (cmd.action() == LFUN_NOACTION) {
 877                 status.message(from_utf8(N_("Nothing to do")));
 878                 status.setEnabled(false);
 879         }
 880
 881         else if (cmd.action() == LFUN_UNKNOWN_ACTION) {
 882                 status.setUnknown(true);
 883                 status.message(from_utf8(N_("Unknown action")));
 884                 status.setEnabled(false);
 885         }
 886
 887         // Does the GuiApplication know something?
 888         else if (getStatus(cmd, status)) { }
 889
 890         // If we do not have a GuiView, then other functions are disabled
 891         else if (!current_view_)
 892                 status.setEnabled(false);
 893
 894         // Does the GuiView know something?
 895         else if (current_view_->getStatus(cmd, status)) { }
 896
 897         // In LyX/Mac, when a dialog is open, the menus of the
 898         // application can still be accessed without giving focus to
 899         // the main window. In this case, we want to disable the menu
 900         // entries that are buffer or view-related.
 901         //FIXME: Abdel (09/02/10) This has very bad effect on Linux, don't know why...
 902         /*
 903         else if (cmd.origin() == FuncRequest::MENU && !current_view_->hasFocus())
 904                 status.setEnabled(false);
 905         */
 906
 907         // If we do not have a BufferView, then other functions are disabled
 908         else if (!(bv = current_view_->currentBufferView()))
 909                 status.setEnabled(false);
 910
 911         // Does the current BufferView know something?
 912         else if (bv->getStatus(cmd, status)) { }
 913
 914         // Does the current Buffer know something?
 915         else if (bv->buffer().getStatus(cmd, status)) { }
 916
 917         // If we do not have a document BufferView, different from the
 918         // current BufferView, then other functions are disabled
 919         else if (!(doc_bv = current_view_->documentBufferView()) || doc_bv == bv)
 920                 status.setEnabled(false);
 921
 922         // Does the document Buffer know something?
 923         else if (doc_bv->buffer().getStatus(cmd, status)) { }
 924
 925         else {
 926                 LYXERR(Debug::ACTION, "LFUN not handled in getStatus(): " << cmd);
 927                 status.message(from_utf8(N_("Command not handled")));
 928                 status.setEnabled(false);
 929         }
 930
 931         // the default error message if we disable the command
 932         if (!status.enabled() && status.message().empty())
 933                 status.message(from_utf8(N_("Command disabled")));
 934
 935         return status;
 936 }
 937
 938
 939 bool GuiApplication::getStatus(FuncRequest const & cmd, FuncStatus & flag) const
 940 {
 941         // I would really like to avoid having this switch and rather try to
 942         // encode this in the function itself.
 943         // -- And I'd rather let an inset decide which LFUNs it is willing
 944         // to handle (Andre')
 945         bool enable = true;
 946         switch (cmd.action()) {
 947
 948         // This could be used for the no-GUI version. The GUI version is handled in
 949         // GuiView::getStatus(). See above.
 950         /*
 951         case LFUN_BUFFER_WRITE:
 952         case LFUN_BUFFER_WRITE_AS: {
 953                 Buffer * b = theBufferList().getBuffer(FileName(cmd.getArg(0)));
 954                 enable = b && (b->isUnnamed() || !b->isClean());
 955                 break;
 956         }
 957         */
 958
 959         case LFUN_BOOKMARK_GOTO: {
 960                 const unsigned int num = convert<unsigned int>(to_utf8(cmd.argument()));
 961                 enable = theSession().bookmarks().isValid(num);
 962                 break;
 963         }
 964
 965         case LFUN_BOOKMARK_CLEAR:
 966                 enable = theSession().bookmarks().hasValid();
 967                 break;
 968
 969         // this one is difficult to get right. As a half-baked
 970         // solution, we consider only the first action of the sequence
 971         case LFUN_COMMAND_SEQUENCE: {
 972                 // argument contains ';'-terminated commands
 973                 string const firstcmd = token(to_utf8(cmd.argument()), ';', 0);
 974                 FuncRequest func(lyxaction.lookupFunc(firstcmd));
 975                 func.setOrigin(cmd.origin());
 976                 flag = getStatus(func);
 977                 break;
 978         }
 979
 980         // we want to check if at least one of these is enabled
 981         case LFUN_COMMAND_ALTERNATIVES: {
 982                 // argument contains ';'-terminated commands
 983                 string arg = to_utf8(cmd.argument());
 984                 while (!arg.empty()) {
 985                         string first;
 986                         arg = split(arg, first, ';');
 987                         FuncRequest func(lyxaction.lookupFunc(first));
 988                         func.setOrigin(cmd.origin());
 989                         flag = getStatus(func);
 990                         // if this one is enabled, the whole thing is
 991                         if (flag.enabled())
 992                                 break;
 993                 }
 994                 break;
 995         }
 996
 997         case LFUN_CALL: {
 998                 FuncRequest func;
 999                 string name = to_utf8(cmd.argument());
1000                 if (theTopLevelCmdDef().lock(name, func)) {
1001                         func.setOrigin(cmd.origin());
1002                         flag = getStatus(func);
1003                         theTopLevelCmdDef().release(name);
1004                 } else {
1005                         // catch recursion or unknown command
1006                         // definition. all operations until the
1007                         // recursion or unknown command definition
1008                         // occurs are performed, so set the state to
1009                         // enabled
1010                         enable = true;
1011                 }
1012                 break;
1013         }
1014
1015         case LFUN_CURSOR_FOLLOWS_SCROLLBAR_TOGGLE:
1016         case LFUN_REPEAT:
1017         case LFUN_PREFERENCES_SAVE:
1018         case LFUN_BUFFER_SAVE_AS_DEFAULT:
1019         case LFUN_DEBUG_LEVEL_SET:
1020                 // these are handled in our dispatch()
1021                 break;
1022
1023         case LFUN_WINDOW_CLOSE:
1024                 enable = d->views_.size() > 0;
1025                 break;
1026
1027         case LFUN_BUFFER_NEW:
1028         case LFUN_BUFFER_NEW_TEMPLATE:
1029         case LFUN_FILE_OPEN:
1030         case LFUN_HELP_OPEN:
1031         case LFUN_SCREEN_FONT_UPDATE:
1032         case LFUN_SET_COLOR:
1033         case LFUN_WINDOW_NEW:
1034         case LFUN_LYX_QUIT:
1035         case LFUN_LYXRC_APPLY:
1036         case LFUN_COMMAND_PREFIX:
1037         case LFUN_CANCEL:
1038         case LFUN_META_PREFIX:
1039         case LFUN_RECONFIGURE:
1040         case LFUN_SERVER_GET_FILENAME:
1041         case LFUN_SERVER_NOTIFY:
1042                 enable = true;
1043                 break;
1044
1045         default:
1046                 return false;
1047         }
1048
1049         if (!enable)
1050                 flag.setEnabled(false);
1051         return true;
1052 }
1053
1054 /// make a post-dispatch status message
1055 static docstring makeDispatchMessage(docstring const & msg,
1056                                      FuncRequest const & cmd)
1057 {
1058         const bool verbose = (cmd.origin() == FuncRequest::MENU
1059                               || cmd.origin() == FuncRequest::TOOLBAR
1060                               || cmd.origin() == FuncRequest::COMMANDBUFFER);
1061
1062         if (cmd.action() == LFUN_SELF_INSERT || !verbose) {
1063                 LYXERR(Debug::ACTION, "dispatch msg is " << msg);
1064                 return msg;
1065         }
1066
1067         docstring dispatch_msg = msg;
1068         if (!dispatch_msg.empty())
1069                 dispatch_msg += ' ';
1070
1071         docstring comname = from_utf8(lyxaction.getActionName(cmd.action()));
1072
1073         bool argsadded = false;
1074
1075         if (!cmd.argument().empty()) {
1076                 if (cmd.action() != LFUN_UNKNOWN_ACTION) {
1077                         comname += ' ' + cmd.argument();
1078                         argsadded = true;
1079                 }
1080         }
1081         docstring const shortcuts = theTopLevelKeymap().
1082                 printBindings(cmd, KeySequence::ForGui);
1083
1084         if (!shortcuts.empty())
1085                 comname += ": " + shortcuts;
1086         else if (!argsadded && !cmd.argument().empty())
1087                 comname += ' ' + cmd.argument();
1088
1089         if (!comname.empty()) {
1090                 comname = rtrim(comname);
1091                 dispatch_msg += '(' + rtrim(comname) + ')';
1092         }
1093         LYXERR(Debug::ACTION, "verbose dispatch msg " << to_utf8(dispatch_msg));
1094         return dispatch_msg;
1095 }
1096
1097
1098 void GuiApplication::dispatch(FuncRequest const & cmd)
1099 {
1100         if (current_view_ && current_view_->currentBufferView())
1101                 current_view_->currentBufferView()->cursor().saveBeforeDispatchPosXY();
1102
1103         DispatchResult dr;
1104         // redraw the screen at the end (first of the two drawing steps).
1105         //This is done unless explicitly requested otherwise
1106         dr.update(Update::FitCursor);
1107         dispatch(cmd, dr);
1108
1109         if (!current_view_)
1110                 return;
1111
1112         BufferView * bv = current_view_->currentBufferView();
1113         if (bv) {
1114                 if (dr.needBufferUpdate()) {
1115                         bv->cursor().clearBufferUpdate();
1116                         bv->buffer().updateBuffer();
1117                 }
1118                 // BufferView::update() updates the ViewMetricsInfo and
1119                 // also initializes the position cache for all insets in
1120                 // (at least partially) visible top-level paragraphs.
1121                 // We will redraw the screen only if needed.
1122                 bv->processUpdateFlags(dr.update());
1123
1124                 // Do we have a selection?
1125                 theSelection().haveSelection(bv->cursor().selection());
1126
1127                 // update gui
1128                 current_view_->restartCursor();
1129         }
1130         // Some messages may already be translated, so we cannot use _()
1131         current_view_->message(makeDispatchMessage(
1132                         translateIfPossible(dr.message()), cmd));
1133 }
1134
1135
1136 void GuiApplication::gotoBookmark(unsigned int idx, bool openFile, bool switchToBuffer)
1137 {
1138         LASSERT(current_view_, /**/);
1139         if (!theSession().bookmarks().isValid(idx))
1140                 return;
1141         BookmarksSection::Bookmark const & bm = theSession().bookmarks().bookmark(idx);
1142         LASSERT(!bm.filename.empty(), /**/);
1143         string const file = bm.filename.absFileName();
1144         // if the file is not opened, open it.
1145         if (!theBufferList().exists(bm.filename)) {
1146                 if (openFile)
1147                         dispatch(FuncRequest(LFUN_FILE_OPEN, file));
1148                 else
1149                         return;
1150         }
1151         // open may fail, so we need to test it again
1152         if (!theBufferList().exists(bm.filename))
1153                 return;
1154
1155         // bm can be changed when saving
1156         BookmarksSection::Bookmark tmp = bm;
1157
1158         // Special case idx == 0 used for back-from-back jump navigation
1159         if (idx == 0)
1160                 dispatch(FuncRequest(LFUN_BOOKMARK_SAVE, "0"));
1161
1162         // if the current buffer is not that one, switch to it.
1163         if (!current_view_->documentBufferView()
1164                 || current_view_->documentBufferView()->buffer().fileName() != tmp.filename) {
1165                 if (!switchToBuffer)
1166                         return;
1167                 dispatch(FuncRequest(LFUN_BUFFER_SWITCH, file));
1168         }
1169
1170         // moveToPosition try paragraph id first and then paragraph (pit, pos).
1171         if (!current_view_->documentBufferView()->moveToPosition(
1172                 tmp.bottom_pit, tmp.bottom_pos, tmp.top_id, tmp.top_pos))
1173                 return;
1174
1175         // bm changed
1176         if (idx == 0)
1177                 return;
1178
1179         // Cursor jump succeeded!
1180         Cursor const & cur = current_view_->documentBufferView()->cursor();
1181         pit_type new_pit = cur.pit();
1182         pos_type new_pos = cur.pos();
1183         int new_id = cur.paragraph().id();
1184
1185         // if bottom_pit, bottom_pos or top_id has been changed, update bookmark
1186         // see http://www.lyx.org/trac/ticket/3092
1187         if (bm.bottom_pit != new_pit || bm.bottom_pos != new_pos
1188                 || bm.top_id != new_id) {
1189                 const_cast<BookmarksSection::Bookmark &>(bm).updatePos(
1190                         new_pit, new_pos, new_id);
1191         }
1192 }
1193
1194 // This function runs "configure" and then rereads lyx.defaults to
1195 // reconfigure the automatic settings.
1196 void GuiApplication::reconfigure(string const & option)
1197 {
1198         // emit message signal.
1199         if (current_view_)
1200                 current_view_->message(_("Running configure..."));
1201
1202         // Run configure in user lyx directory
1203         PathChanger p(package().user_support());
1204         string configure_command = package().configure_command();
1205         configure_command += option;
1206         Systemcall one;
1207         int ret = one.startscript(Systemcall::Wait, configure_command);
1208         p.pop();
1209         // emit message signal.
1210         if (current_view_)
1211                 current_view_->message(_("Reloading configuration..."));
1212         lyxrc.read(libFileSearch(QString(), "lyxrc.defaults"));
1213         // Re-read packages.lst
1214         LaTeXFeatures::getAvailable();
1215
1216         if (ret)
1217                 Alert::information(_("System reconfiguration failed"),
1218                            _("The system reconfiguration has failed.\n"
1219                                   "Default textclass is used but LyX may "
1220                                   "not be able to work properly.\n"
1221                                   "Please reconfigure again if needed."));
1222         else
1223                 Alert::information(_("System reconfigured"),
1224                            _("The system has been reconfigured.\n"
1225                              "You need to restart LyX to make use of any\n"
1226                              "updated document class specifications."));
1227 }
1228
1229
1230 void GuiApplication::dispatch(FuncRequest const & cmd, DispatchResult & dr)
1231 {
1232         string const argument = to_utf8(cmd.argument());
1233         FuncCode const action = cmd.action();
1234
1235         LYXERR(Debug::ACTION, "cmd: " << cmd);
1236
1237         // we have not done anything wrong yet.
1238         dr.setError(false);
1239
1240         FuncStatus const flag = getStatus(cmd);
1241         if (!flag.enabled()) {
1242                 // We cannot use this function here
1243                 LYXERR(Debug::ACTION, "action "
1244                        << lyxaction.getActionName(action)
1245                        << " [" << action << "] is disabled at this location");
1246                 if (current_view_)
1247                         current_view_->restartCursor();
1248                 dr.setMessage(flag.message());
1249                 dr.setError(true);
1250                 dr.dispatched(false);
1251                 dr.update(Update::None);
1252                 dr.clearBufferUpdate();
1253                 return;
1254         };
1255
1256         // Assumes that the action will be dispatched.
1257         dr.dispatched(true);
1258
1259         switch (cmd.action()) {
1260
1261         case LFUN_WINDOW_NEW:
1262                 createView(toqstr(cmd.argument()));
1263                 break;
1264
1265         case LFUN_WINDOW_CLOSE:
1266                 // update bookmark pit of the current buffer before window close
1267                 for (size_t i = 0; i < theSession().bookmarks().size(); ++i)
1268                         gotoBookmark(i+1, false, false);
1269                 // clear the last opened list, because
1270                 // maybe this will end the session
1271                 theSession().lastOpened().clear();
1272                 current_view_->closeScheduled();
1273                 break;
1274
1275         case LFUN_LYX_QUIT:
1276                 // quitting is triggered by the gui code
1277                 // (leaving the event loop).
1278                 if (current_view_)
1279                         current_view_->message(from_utf8(N_("Exiting.")));
1280                 if (closeAllViews())
1281                         quit();
1282                 break;
1283
1284         case LFUN_SCREEN_FONT_UPDATE: {
1285                 // handle the screen font changes.
1286                 d->font_loader_.update();
1287                 // Backup current_view_
1288                 GuiView * view = current_view_;
1289                 // Set current_view_ to zero to forbid GuiWorkArea::redraw()
1290                 // to skip the refresh.
1291                 current_view_ = 0;
1292                 theBufferList().changed(false);
1293                 // Restore current_view_
1294                 current_view_ = view;
1295                 break;
1296         }
1297
1298         case LFUN_BUFFER_NEW:
1299                 if (d->views_.empty()
1300                    || (!lyxrc.open_buffers_in_tabs && current_view_->documentBufferView() != 0)) {
1301                         createView(QString(), false); // keep hidden
1302                         current_view_->newDocument(to_utf8(cmd.argument()), false);
1303                         current_view_->show();
1304                         setActiveWindow(current_view_);
1305                 } else {
1306                         current_view_->newDocument(to_utf8(cmd.argument()), false);
1307                 }
1308                 break;
1309
1310         case LFUN_BUFFER_NEW_TEMPLATE:
1311                 if (d->views_.empty()
1312                    || (!lyxrc.open_buffers_in_tabs && current_view_->documentBufferView() != 0)) {
1313                         createView();
1314                         current_view_->newDocument(to_utf8(cmd.argument()), true);
1315                         if (!current_view_->documentBufferView())
1316                                 current_view_->close();
1317                 } else {
1318                         current_view_->newDocument(to_utf8(cmd.argument()), true);
1319                 }
1320                 break;
1321
1322         case LFUN_FILE_OPEN:
1323                 // FIXME: create a new method shared with LFUN_HELP_OPEN.
1324                 if (d->views_.empty()
1325                         || (!lyxrc.open_buffers_in_tabs && current_view_->documentBufferView() != 0)) {
1326                         string const fname = to_utf8(cmd.argument());
1327                         // We want the ui session to be saved per document and not per
1328                         // window number. The filename crc is a good enough identifier.
1329                         boost::crc_32_type crc;
1330                         crc = for_each(fname.begin(), fname.end(), crc);
1331                         createView(crc.checksum());
1332                         current_view_->openDocument(fname);
1333                         if (current_view_ && !current_view_->documentBufferView())
1334                                 current_view_->close();
1335                 } else
1336                         current_view_->openDocument(to_utf8(cmd.argument()));
1337                 break;
1338
1339         case LFUN_HELP_OPEN: {
1340                 // FIXME: create a new method shared with LFUN_FILE_OPEN.
1341                 if (current_view_ == 0)
1342                         createView();
1343                 string const arg = to_utf8(cmd.argument());
1344                 if (arg.empty()) {
1345                         current_view_->message(_("Missing argument"));
1346                         break;
1347                 }
1348                 FileName fname = i18nLibFileSearch("doc", arg, "lyx");
1349                 if (fname.empty())
1350                         fname = i18nLibFileSearch("examples", arg, "lyx");
1351
1352                 if (fname.empty()) {
1353                         lyxerr << "LyX: unable to find documentation file `"
1354                                << arg << "'. Bad installation?" << endl;
1355                         break;
1356                 }
1357                 current_view_->message(bformat(_("Opening help file %1$s..."),
1358                                                makeDisplayPath(fname.absFileName())));
1359                 Buffer * buf = current_view_->loadDocument(fname, false);
1360                 if (buf) {
1361                         current_view_->setBuffer(buf);
1362 #ifndef DEVEL_VERSION
1363                         buf->setReadonly(true);
1364 #endif
1365                         buf->errors("Parse");
1366                 }
1367                 break;
1368         }
1369
1370         case LFUN_SET_COLOR: {
1371                 string lyx_name;
1372                 string const x11_name = split(to_utf8(cmd.argument()), lyx_name, ' ');
1373                 if (lyx_name.empty() || x11_name.empty()) {
1374                         current_view_->message(
1375                                         _("Syntax: set-color <lyx_name> <x11_name>"));
1376                         break;
1377                 }
1378
1379                 string const graphicsbg = lcolor.getLyXName(Color_graphicsbg);
1380                 bool const graphicsbg_changed =
1381                                 lyx_name == graphicsbg && x11_name != graphicsbg;
1382                 if (graphicsbg_changed) {
1383                         // FIXME: The graphics cache no longer has a changeDisplay method.
1384 #if 0
1385                         graphics::GCache::get().changeDisplay(true);
1386 #endif
1387                 }
1388
1389                 if (!lcolor.setColor(lyx_name, x11_name)) {
1390                         current_view_->message(
1391                                 bformat(_("Set-color \"%1$s\" failed "
1392                                         "- color is undefined or "
1393                                         "may not be redefined"),
1394                                         from_utf8(lyx_name)));
1395                         break;
1396                 }
1397                 // Make sure we don't keep old colors in cache.
1398                 d->color_cache_.clear();
1399                 break;
1400         }
1401
1402         case LFUN_LYXRC_APPLY: {
1403                 // reset active key sequences, since the bindings
1404                 // are updated (bug 6064)
1405                 d->keyseq.reset();
1406                 LyXRC const lyxrc_orig = lyxrc;
1407
1408                 istringstream ss(to_utf8(cmd.argument()));
1409                 bool const success = lyxrc.read(ss) == 0;
1410
1411                 if (!success) {
1412                         lyxerr << "Warning in LFUN_LYXRC_APPLY!\n"
1413                                         << "Unable to read lyxrc data"
1414                                         << endl;
1415                         break;
1416                 }
1417
1418                 actOnUpdatedPrefs(lyxrc_orig, lyxrc);
1419                 setSpellChecker();
1420                 resetGui();
1421
1422                 break;
1423         }
1424
1425         case LFUN_COMMAND_PREFIX:
1426                 dispatch(FuncRequest(LFUN_MESSAGE, d->keyseq.printOptions(true)));
1427                 break;
1428
1429         case LFUN_CANCEL: {
1430                 d->keyseq.reset();
1431                 d->meta_fake_bit = NoModifier;
1432                 GuiView * gv = currentView();
1433                 if (gv && gv->currentBufferView())
1434                         // cancel any selection
1435                         lyx::dispatch(FuncRequest(LFUN_MARK_OFF));
1436                 dr.setMessage(from_ascii(N_("Cancel")));
1437                 break;
1438         }
1439         case LFUN_META_PREFIX:
1440                 d->meta_fake_bit = AltModifier;
1441                 dr.setMessage(d->keyseq.print(KeySequence::ForGui));
1442                 break;
1443
1444         // --- Menus -----------------------------------------------
1445         case LFUN_RECONFIGURE:
1446                 // argument is any additional parameter to the configure.py command
1447                 reconfigure(to_utf8(cmd.argument()));
1448                 break;
1449
1450         // --- lyxserver commands ----------------------------
1451         case LFUN_SERVER_GET_FILENAME: {
1452                 LASSERT(current_view_ && current_view_->documentBufferView(), return);
1453                 docstring const fname = from_utf8(
1454                                 current_view_->documentBufferView()->buffer().absFileName());
1455                 dr.setMessage(fname);
1456                 LYXERR(Debug::INFO, "FNAME[" << fname << ']');
1457                 break;
1458         }
1459         case LFUN_SERVER_NOTIFY: {
1460                 docstring const dispatch_buffer = d->keyseq.print(KeySequence::Portable);
1461                 dr.setMessage(dispatch_buffer);
1462                 theServer().notifyClient(to_utf8(dispatch_buffer));
1463                 break;
1464         }
1465
1466         case LFUN_CURSOR_FOLLOWS_SCROLLBAR_TOGGLE:
1467                 lyxrc.cursor_follows_scrollbar = !lyxrc.cursor_follows_scrollbar;
1468                 break;
1469
1470         case LFUN_REPEAT: {
1471                 // repeat command
1472                 string countstr;
1473                 string rest = split(argument, countstr, ' ');
1474                 istringstream is(countstr);
1475                 int count = 0;
1476                 is >> count;
1477                 //lyxerr << "repeat: count: " << count << " cmd: " << rest << endl;
1478                 for (int i = 0; i < count; ++i)
1479                         dispatch(lyxaction.lookupFunc(rest));
1480                 break;
1481         }
1482
1483         case LFUN_COMMAND_SEQUENCE: {
1484                 // argument contains ';'-terminated commands
1485                 string arg = argument;
1486                 // FIXME: this LFUN should also work without any view.
1487                 Buffer * buffer = (current_view_ && current_view_->documentBufferView())
1488                                   ? &(current_view_->documentBufferView()->buffer()) : 0;
1489                 if (buffer)
1490                         buffer->undo().beginUndoGroup();
1491                 while (!arg.empty()) {
1492                         string first;
1493                         arg = split(arg, first, ';');
1494                         FuncRequest func(lyxaction.lookupFunc(first));
1495                         func.setOrigin(cmd.origin());
1496                         dispatch(func);
1497                 }
1498                 // the buffer may have been closed by one action
1499                 if (theBufferList().isLoaded(buffer))
1500                         buffer->undo().endUndoGroup();
1501                 break;
1502         }
1503
1504         case LFUN_COMMAND_ALTERNATIVES: {
1505                 // argument contains ';'-terminated commands
1506                 string arg = argument;
1507                 while (!arg.empty()) {
1508                         string first;
1509                         arg = split(arg, first, ';');
1510                         FuncRequest func(lyxaction.lookupFunc(first));
1511                         func.setOrigin(cmd.origin());
1512                         FuncStatus const stat = getStatus(func);
1513                         if (stat.enabled()) {
1514                                 dispatch(func);
1515                                 break;
1516                         }
1517                 }
1518                 break;
1519         }
1520
1521         case LFUN_CALL: {
1522                 FuncRequest func;
1523                 if (theTopLevelCmdDef().lock(argument, func)) {
1524                         func.setOrigin(cmd.origin());
1525                         dispatch(func);
1526                         theTopLevelCmdDef().release(argument);
1527                 } else {
1528                         if (func.action() == LFUN_UNKNOWN_ACTION) {
1529                                 // unknown command definition
1530                                 lyxerr << "Warning: unknown command definition `"
1531                                                 << argument << "'"
1532                                                 << endl;
1533                         } else {
1534                                 // recursion detected
1535                                 lyxerr << "Warning: Recursion in the command definition `"
1536                                                 << argument << "' detected"
1537                                                 << endl;
1538                         }
1539                 }
1540                 break;
1541         }
1542
1543         case LFUN_PREFERENCES_SAVE:
1544                 lyxrc.write(support::makeAbsPath("preferences",
1545                         package().user_support().absFileName()), false);
1546                 break;
1547
1548         case LFUN_BUFFER_SAVE_AS_DEFAULT: {
1549                 string const fname = addName(addPath(package().user_support().absFileName(),
1550                         "templates/"), "defaults.lyx");
1551                 Buffer defaults(fname);
1552
1553                 istringstream ss(argument);
1554                 Lexer lex;
1555                 lex.setStream(ss);
1556                 int const unknown_tokens = defaults.readHeader(lex);
1557
1558                 if (unknown_tokens != 0) {
1559                         lyxerr << "Warning in LFUN_BUFFER_SAVE_AS_DEFAULT!\n"
1560                                << unknown_tokens << " unknown token"
1561                                << (unknown_tokens == 1 ? "" : "s")
1562                                << endl;
1563                 }
1564
1565                 if (defaults.writeFile(FileName(defaults.absFileName())))
1566                         dr.setMessage(bformat(_("Document defaults saved in %1$s"),
1567                                               makeDisplayPath(fname)));
1568                 else {
1569                         dr.setError(true);
1570                         dr.setMessage(from_ascii(N_("Unable to save document defaults")));
1571                 }
1572                 break;
1573         }
1574
1575         case LFUN_BOOKMARK_GOTO:
1576                 // go to bookmark, open unopened file and switch to buffer if necessary
1577                 gotoBookmark(convert<unsigned int>(to_utf8(cmd.argument())), true, true);
1578                 dr.update(Update::Force | Update::FitCursor);
1579                 break;
1580
1581         case LFUN_BOOKMARK_CLEAR:
1582                 theSession().bookmarks().clear();
1583                 break;
1584
1585         case LFUN_DEBUG_LEVEL_SET:
1586                 lyxerr.setLevel(Debug::value(to_utf8(cmd.argument())));
1587                 break;
1588
1589         default:
1590                 // Everything below is only for active window
1591                 if (current_view_ == 0)
1592                         break;
1593
1594                 // Let the current GuiView dispatch its own actions.
1595                 current_view_->dispatch(cmd, dr);
1596
1597                 if (dr.dispatched())
1598                         break;
1599
1600                 BufferView * bv = current_view_->currentBufferView();
1601                 LASSERT(bv, /**/);
1602
1603                 // Let the current BufferView dispatch its own actions.
1604                 bv->dispatch(cmd, dr);
1605                 if (dr.dispatched())
1606                         break;
1607
1608                 BufferView * doc_bv = current_view_->documentBufferView();
1609                 // Try with the document BufferView dispatch if any.
1610                 if (doc_bv) {
1611                         doc_bv->dispatch(cmd, dr);
1612                         if (dr.dispatched())
1613                                 break;
1614                 }
1615
1616                 // OK, so try the current Buffer itself...
1617                 bv->buffer().dispatch(cmd, dr);
1618                 if (dr.dispatched())
1619                         break;
1620
1621                 // and with the document Buffer.
1622                 if (doc_bv) {
1623                         doc_bv->buffer().dispatch(cmd, dr);
1624                         if (dr.dispatched())
1625                                 break;
1626                 }
1627
1628                 // Let the current Cursor dispatch its own actions.
1629                 Cursor old = bv->cursor();
1630                 bv->cursor().dispatch(cmd);
1631
1632                 // notify insets we just left
1633                 if (bv->cursor() != old) {
1634                         old.fixIfBroken();
1635                         bool badcursor = notifyCursorLeavesOrEnters(old, bv->cursor());
1636                         if (badcursor)
1637                                 bv->cursor().fixIfBroken();
1638                 }
1639
1640                 // update completion. We do it here and not in
1641                 // processKeySym to avoid another redraw just for a
1642                 // changed inline completion
1643                 if (cmd.origin() == FuncRequest::KEYBOARD) {
1644                         if (cmd.action() == LFUN_SELF_INSERT
1645                                         || (cmd.action() == LFUN_ERT_INSERT && bv->cursor().inMathed()))
1646                                 current_view_->updateCompletion(bv->cursor(), true, true);
1647                         else if (cmd.action() == LFUN_CHAR_DELETE_BACKWARD)
1648                                 current_view_->updateCompletion(bv->cursor(), false, true);
1649                         else
1650                                 current_view_->updateCompletion(bv->cursor(), false, false);
1651                 }
1652
1653                 dr = bv->cursor().result();
1654         }
1655
1656         // if we executed a mutating lfun, mark the buffer as dirty
1657         Buffer * doc_buffer = (current_view_ && current_view_->documentBufferView())
1658                       ? &(current_view_->documentBufferView()->buffer()) : 0;
1659         if (doc_buffer && theBufferList().isLoaded(doc_buffer)
1660                 && flag.enabled()
1661                 && !lyxaction.funcHasFlag(action, LyXAction::NoBuffer)
1662                 && !lyxaction.funcHasFlag(action, LyXAction::ReadOnly))
1663                 current_view_->currentBufferView()->buffer().markDirty();
1664 }
1665
1666
1667 docstring GuiApplication::viewStatusMessage()
1668 {
1669         // When meta-fake key is pressed, show the key sequence so far + "M-".
1670         if (d->meta_fake_bit != NoModifier)
1671                 return d->keyseq.print(KeySequence::ForGui) + "M-";
1672
1673         // Else, when a non-complete key sequence is pressed,
1674         // show the available options.
1675         if (d->keyseq.length() > 0 && !d->keyseq.deleted())
1676                 return d->keyseq.printOptions(true);
1677
1678         return docstring();
1679 }
1680
1681
1682 void GuiApplication::handleKeyFunc(FuncCode action)
1683 {
1684         char_type c = 0;
1685
1686         if (d->keyseq.length())
1687                 c = 0;
1688         GuiView * gv = currentView();
1689         LASSERT(gv && gv->currentBufferView(), return);
1690         BufferView * bv = gv->currentBufferView();
1691         bv->getIntl().getTransManager().deadkey(
1692                 c, get_accent(action).accent, bv->cursor().innerText(),
1693                 bv->cursor());
1694         // Need to clear, in case the minibuffer calls these
1695         // actions
1696         d->keyseq.clear();
1697         // copied verbatim from do_accent_char
1698         bv->cursor().resetAnchor();
1699         bv->processUpdateFlags(Update::FitCursor);
1700 }
1701
1702
1703 void GuiApplication::processKeySym(KeySymbol const & keysym, KeyModifier state)
1704 {
1705         LYXERR(Debug::KEY, "KeySym is " << keysym.getSymbolName());
1706
1707         // Do nothing if we have nothing (JMarc)
1708         if (!keysym.isOK()) {
1709                 LYXERR(Debug::KEY, "Empty kbd action (probably composing)");
1710                 current_view_->restartCursor();
1711                 return;
1712         }
1713
1714         if (keysym.isModifier()) {
1715                 LYXERR(Debug::KEY, "isModifier true");
1716                 if (current_view_)
1717                         current_view_->restartCursor();
1718                 return;
1719         }
1720
1721         char_type encoded_last_key = keysym.getUCSEncoded();
1722
1723         // Do a one-deep top-level lookup for
1724         // cancel and meta-fake keys. RVDK_PATCH_5
1725         d->cancel_meta_seq.reset();
1726
1727         FuncRequest func = d->cancel_meta_seq.addkey(keysym, state);
1728         LYXERR(Debug::KEY, "action first set to [" << func.action() << ']');
1729
1730         // When not cancel or meta-fake, do the normal lookup.
1731         // Note how the meta_fake Mod1 bit is OR-ed in and reset afterwards.
1732         // Mostly, meta_fake_bit = NoModifier. RVDK_PATCH_5.
1733         if ((func.action() != LFUN_CANCEL) && (func.action() != LFUN_META_PREFIX)) {
1734                 // remove Caps Lock and Mod2 as a modifiers
1735                 func = d->keyseq.addkey(keysym, (state | d->meta_fake_bit));
1736                 LYXERR(Debug::KEY, "action now set to [" << func.action() << ']');
1737         }
1738
1739         // Dont remove this unless you know what you are doing.
1740         d->meta_fake_bit = NoModifier;
1741
1742         // Can this happen now ?
1743         if (func.action() == LFUN_NOACTION)
1744                 func = FuncRequest(LFUN_COMMAND_PREFIX);
1745
1746         LYXERR(Debug::KEY, " Key [action=" << func.action() << "]["
1747                 << d->keyseq.print(KeySequence::Portable) << ']');
1748
1749         // already here we know if it any point in going further
1750         // why not return already here if action == -1 and
1751         // num_bytes == 0? (Lgb)
1752
1753         if (d->keyseq.length() > 1)
1754                 current_view_->message(d->keyseq.print(KeySequence::ForGui));
1755
1756
1757         // Maybe user can only reach the key via holding down shift.
1758         // Let's see. But only if shift is the only modifier
1759         if (func.action() == LFUN_UNKNOWN_ACTION && state == ShiftModifier) {
1760                 LYXERR(Debug::KEY, "Trying without shift");
1761                 func = d->keyseq.addkey(keysym, NoModifier);
1762                 LYXERR(Debug::KEY, "Action now " << func.action());
1763         }
1764
1765         if (func.action() == LFUN_UNKNOWN_ACTION) {
1766                 // Hmm, we didn't match any of the keysequences. See
1767                 // if it's normal insertable text not already covered
1768                 // by a binding
1769                 if (keysym.isText() && d->keyseq.length() == 1) {
1770                         LYXERR(Debug::KEY, "isText() is true, inserting.");
1771                         func = FuncRequest(LFUN_SELF_INSERT,
1772                                            FuncRequest::KEYBOARD);
1773                 } else {
1774                         LYXERR(Debug::KEY, "Unknown, !isText() - giving up");
1775                         current_view_->message(_("Unknown function."));
1776                         current_view_->restartCursor();
1777                         return;
1778                 }
1779         }
1780
1781         if (func.action() == LFUN_SELF_INSERT) {
1782                 if (encoded_last_key != 0) {
1783                         docstring const arg(1, encoded_last_key);
1784                         lyx::dispatch(FuncRequest(LFUN_SELF_INSERT, arg,
1785                                              FuncRequest::KEYBOARD));
1786                         LYXERR(Debug::KEY, "SelfInsert arg[`" << to_utf8(arg) << "']");
1787                 }
1788         } else
1789                 lyx::dispatch(func);
1790 }
1791
1792
1793 void GuiApplication::dispatchDelayed(FuncRequest const & func)
1794 {
1795         d->func_request_queue_.push(func);
1796         QTimer::singleShot(0, this, SLOT(processFuncRequestQueue()));
1797 }
1798
1799
1800 void GuiApplication::resetGui()
1801 {
1802         // Set the language defined by the user.
1803         setGuiLanguage();
1804
1805         // Read menus
1806         if (!readUIFile(toqstr(lyxrc.ui_file)))
1807                 // Gives some error box here.
1808                 return;
1809
1810         if (d->global_menubar_)
1811                 d->menus_.fillMenuBar(d->global_menubar_, 0, false);
1812
1813         QHash<int, GuiView *>::iterator it;
1814         for (it = d->views_.begin(); it != d->views_.end(); ++it) {
1815                 GuiView * gv = *it;
1816                 setCurrentView(gv);
1817                 gv->setLayoutDirection(layoutDirection());
1818                 gv->resetDialogs();
1819         }
1820
1821         lyx::dispatch(FuncRequest(LFUN_SCREEN_FONT_UPDATE));
1822 }
1823
1824
1825 void GuiApplication::createView(int view_id)
1826 {
1827         createView(QString(), true, view_id);
1828 }
1829
1830
1831 void GuiApplication::createView(QString const & geometry_arg, bool autoShow,
1832         int view_id)
1833 {
1834         // release the keyboard which might have been grabed by the global
1835         // menubar on Mac to catch shortcuts even without any GuiView.
1836         if (d->global_menubar_)
1837                 d->global_menubar_->releaseKeyboard();
1838
1839         // create new view
1840         int id = view_id;
1841         while (d->views_.find(id) != d->views_.end())
1842                 id++;
1843
1844         LYXERR(Debug::GUI, "About to create new window with ID " << id);
1845         GuiView * view = new GuiView(id);
1846         // register view
1847         d->views_[id] = view;
1848
1849         if (autoShow) {
1850                 view->show();
1851                 setActiveWindow(view);
1852         }
1853
1854         if (!geometry_arg.isEmpty()) {
1855 #ifdef Q_WS_WIN
1856                 int x, y;
1857                 int w, h;
1858                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
1859                 re.indexIn(geometry_arg);
1860                 w = re.cap(1).toInt();
1861                 h = re.cap(2).toInt();
1862                 x = re.cap(3).toInt();
1863                 y = re.cap(4).toInt();
1864                 view->setGeometry(x, y, w, h);
1865 #endif
1866         }
1867         view->setFocus();
1868 }
1869
1870
1871 Clipboard & GuiApplication::clipboard()
1872 {
1873         return d->clipboard_;
1874 }
1875
1876
1877 Selection & GuiApplication::selection()
1878 {
1879         return d->selection_;
1880 }
1881
1882
1883 FontLoader & GuiApplication::fontLoader()
1884 {
1885         return d->font_loader_;
1886 }
1887
1888
1889 Toolbars const & GuiApplication::toolbars() const
1890 {
1891         return d->toolbars_;
1892 }
1893
1894
1895 Toolbars & GuiApplication::toolbars()
1896 {
1897         return d->toolbars_;
1898 }
1899
1900
1901 Menus const & GuiApplication::menus() const
1902 {
1903         return d->menus_;
1904 }
1905
1906
1907 Menus & GuiApplication::menus()
1908 {
1909         return d->menus_;
1910 }
1911
1912
1913 QList<int> GuiApplication::viewIds() const
1914 {
1915         return d->views_.keys();
1916 }
1917
1918
1919 ColorCache & GuiApplication::colorCache()
1920 {
1921         return d->color_cache_;
1922 }
1923
1924
1925 int GuiApplication::exec()
1926 {
1927         // asynchronously handle batch commands. This event will be in
1928         // the event queue in front of other asynchronous events. Hence,
1929         // we can assume in the latter that the gui is setup already.
1930         QTimer::singleShot(0, this, SLOT(execBatchCommands()));
1931
1932         return QApplication::exec();
1933 }
1934
1935
1936 void GuiApplication::exit(int status)
1937 {
1938         QApplication::exit(status);
1939 }
1940
1941
1942 void GuiApplication::setGuiLanguage()
1943 {
1944         // Set the language defined by the user.
1945         setRcGuiLanguage();
1946
1947         QString const default_language = toqstr(Messages::defaultLanguage());
1948         LYXERR(Debug::LOCALE, "Trying to set default locale to: " << default_language);
1949         QLocale const default_locale(default_language);
1950         QLocale::setDefault(default_locale);
1951
1952         // install translation file for Qt built-in dialogs
1953         QString const language_name = QString("qt_") + default_locale.name();
1954
1955         // language_name can be short (e.g. qt_zh) or long (e.g. qt_zh_CN).
1956         // Short-named translator can be loaded from a long name, but not the
1957         // opposite. Therefore, long name should be used without truncation.
1958         // c.f. http://doc.trolltech.com/4.1/qtranslator.html#load
1959         if (!d->qt_trans_.load(language_name,
1960                         QLibraryInfo::location(QLibraryInfo::TranslationsPath))) {
1961                 LYXERR(Debug::LOCALE, "Could not find Qt translations for locale "
1962                         << language_name);
1963         } else {
1964                 LYXERR(Debug::LOCALE, "Successfully installed Qt translations for locale "
1965                         << language_name);
1966         }
1967
1968         switch (default_locale.language()) {
1969         case QLocale::Arabic :
1970         case QLocale::Hebrew :
1971         case QLocale::Persian :
1972         case QLocale::Urdu :
1973                 setLayoutDirection(Qt::RightToLeft);
1974                 break;
1975         default:
1976                 setLayoutDirection(Qt::LeftToRight);
1977         }
1978 }
1979
1980
1981 void GuiApplication::processFuncRequestQueue()
1982 {
1983         while (!d->func_request_queue_.empty()) {
1984                 lyx::dispatch(d->func_request_queue_.back());
1985                 d->func_request_queue_.pop();
1986         }
1987 }
1988
1989
1990 void GuiApplication::execBatchCommands()
1991 {
1992         setGuiLanguage();
1993
1994         // Read menus
1995         if (!readUIFile(toqstr(lyxrc.ui_file)))
1996                 // Gives some error box here.
1997                 return;
1998
1999 #ifdef Q_WS_MACX
2000         // Create the global default menubar which is shown for the dialogs
2001         // and if no GuiView is visible.
2002         // This must be done after the session was recovered to know the "last files".
2003         d->global_menubar_ = new GlobalMenuBar();
2004         d->menus_.fillMenuBar(d->global_menubar_, 0, true);
2005 #endif
2006
2007         lyx::execBatchCommands();
2008 }
2009
2010
2011 QAbstractItemModel * GuiApplication::languageModel()
2012 {
2013         if (d->language_model_)
2014                 return d->language_model_;
2015
2016         QStandardItemModel * lang_model = new QStandardItemModel(this);
2017         lang_model->insertColumns(0, 3);
2018         int current_row;
2019         QIcon speller(getPixmap("images/", "dialog-show_spellchecker", "png"));
2020         QIcon saurus(getPixmap("images/", "thesaurus-entry", "png"));
2021         Languages::const_iterator it = lyx::languages.begin();
2022         Languages::const_iterator end = lyx::languages.end();
2023         for (; it != end; ++it) {
2024                 current_row = lang_model->rowCount();
2025                 lang_model->insertRows(current_row, 1);
2026                 QModelIndex pl_item = lang_model->index(current_row, 0);
2027                 QModelIndex sp_item = lang_model->index(current_row, 1);
2028                 QModelIndex th_item = lang_model->index(current_row, 2);
2029                 lang_model->setData(pl_item, qt_(it->second.display()), Qt::DisplayRole);
2030                 lang_model->setData(pl_item, toqstr(it->second.lang()), Qt::UserRole);
2031                 lang_model->setData(sp_item, qt_(it->second.display()), Qt::DisplayRole);
2032                 lang_model->setData(sp_item, toqstr(it->second.lang()), Qt::UserRole);
2033                 if (theSpellChecker() && theSpellChecker()->hasDictionary(&it->second))
2034                         lang_model->setData(sp_item, speller, Qt::DecorationRole);
2035                 lang_model->setData(th_item, qt_(it->second.display()), Qt::DisplayRole);
2036                 lang_model->setData(th_item, toqstr(it->second.lang()), Qt::UserRole);
2037                 if (thesaurus.thesaurusInstalled(from_ascii(it->second.code())))
2038                         lang_model->setData(th_item, saurus, Qt::DecorationRole);
2039         }
2040         d->language_model_ = new QSortFilterProxyModel(this);
2041         d->language_model_->setSourceModel(lang_model);
2042 #if QT_VERSION >= 0x040300
2043         d->language_model_->setSortLocaleAware(true);
2044 #endif
2045         return d->language_model_;
2046 }
2047
2048
2049 void GuiApplication::restoreGuiSession()
2050 {
2051         if (!lyxrc.load_session)
2052                 return;
2053
2054         Session & session = theSession();
2055         LastOpenedSection::LastOpened const & lastopened =
2056                 session.lastOpened().getfiles();
2057
2058         FileName active_file;
2059         // do not add to the lastfile list since these files are restored from
2060         // last session, and should be already there (regular files), or should
2061         // not be added at all (help files).
2062         for (size_t i = 0; i < lastopened.size(); ++i) {
2063                 FileName const & file_name = lastopened[i].file_name;
2064                 if (d->views_.empty() || (!lyxrc.open_buffers_in_tabs
2065                           && current_view_->documentBufferView() != 0)) {
2066                         boost::crc_32_type crc;
2067                         string const & fname = file_name.absFileName();
2068                         crc = for_each(fname.begin(), fname.end(), crc);
2069                         createView(crc.checksum());
2070                 }
2071                 current_view_->loadDocument(file_name, false);
2072
2073                 if (lastopened[i].active)
2074                         active_file = file_name;
2075         }
2076
2077         // Restore last active buffer
2078         Buffer * buffer = theBufferList().getBuffer(active_file);
2079         if (buffer)
2080                 current_view_->setBuffer(buffer);
2081
2082         // clear this list to save a few bytes of RAM
2083         session.lastOpened().clear();
2084 }
2085
2086
2087 QString const GuiApplication::romanFontName()
2088 {
2089         QFont font;
2090         font.setKerning(false);
2091         font.setStyleHint(QFont::Serif);
2092         font.setFamily("serif");
2093
2094         return QFontInfo(font).family();
2095 }
2096
2097
2098 QString const GuiApplication::sansFontName()
2099 {
2100         QFont font;
2101         font.setKerning(false);
2102         font.setStyleHint(QFont::SansSerif);
2103         font.setFamily("sans");
2104
2105         return QFontInfo(font).family();
2106 }
2107
2108
2109 QString const GuiApplication::typewriterFontName()
2110 {
2111         QFont font;
2112         font.setKerning(false);
2113         font.setStyleHint(QFont::TypeWriter);
2114         font.setFamily("monospace");
2115
2116         return QFontInfo(font).family();
2117 }
2118
2119
2120 void GuiApplication::handleRegularEvents()
2121 {
2122         ForkedCallsController::handleCompletedProcesses();
2123 }
2124
2125
2126 bool GuiApplication::event(QEvent * e)
2127 {
2128         switch(e->type()) {
2129         case QEvent::FileOpen: {
2130                 // Open a file; this happens only on Mac OS X for now.
2131                 //
2132                 // We do this asynchronously because on startup the batch
2133                 // commands are not executed here yet and the gui is not ready
2134                 // therefore.
2135                 QFileOpenEvent * foe = static_cast<QFileOpenEvent *>(e);
2136                 dispatchDelayed(FuncRequest(LFUN_FILE_OPEN, qstring_to_ucs4(foe->file())));
2137                 e->accept();
2138                 return true;
2139         }
2140         default:
2141                 return QApplication::event(e);
2142         }
2143 }
2144
2145
2146 bool GuiApplication::notify(QObject * receiver, QEvent * event)
2147 {
2148         try {
2149                 return QApplication::notify(receiver, event);
2150         }
2151         catch (ExceptionMessage const & e) {
2152                 switch(e.type_) {
2153                 case ErrorException:
2154                         emergencyCleanup();
2155                         setQuitOnLastWindowClosed(false);
2156                         closeAllViews();
2157                         Alert::error(e.title_, e.details_);
2158 #ifndef NDEBUG
2159                         // Properly crash in debug mode in order to get a useful backtrace.
2160                         abort();
2161 #endif
2162                         // In release mode, try to exit gracefully.
2163                         this->exit(1);
2164
2165                 case BufferException: {
2166                         if (!current_view_->documentBufferView())
2167                                 return false;
2168                         Buffer * buf = &current_view_->documentBufferView()->buffer();
2169                         docstring details = e.details_ + '\n';
2170                         details += buf->emergencyWrite();
2171                         theBufferList().release(buf);
2172                         details += "\n" + _("The current document was closed.");
2173                         Alert::error(e.title_, details);
2174                         return false;
2175                 }
2176                 case WarningException:
2177                         Alert::warning(e.title_, e.details_);
2178                         return false;
2179                 }
2180         }
2181         catch (exception const & e) {
2182                 docstring s = _("LyX has caught an exception, it will now "
2183                         "attempt to save all unsaved documents and exit."
2184                         "\n\nException: ");
2185                 s += from_ascii(e.what());
2186                 Alert::error(_("Software exception Detected"), s);
2187                 lyx_exit(1);
2188         }
2189         catch (...) {
2190                 docstring s = _("LyX has caught some really weird exception, it will "
2191                         "now attempt to save all unsaved documents and exit.");
2192                 Alert::error(_("Software exception Detected"), s);
2193                 lyx_exit(1);
2194         }
2195
2196         return false;
2197 }
2198
2199
2200 bool GuiApplication::getRgbColor(ColorCode col, RGBColor & rgbcol)
2201 {
2202         QColor const & qcol = d->color_cache_.get(col);
2203         if (!qcol.isValid()) {
2204                 rgbcol.r = 0;
2205                 rgbcol.g = 0;
2206                 rgbcol.b = 0;
2207                 return false;
2208         }
2209         rgbcol.r = qcol.red();
2210         rgbcol.g = qcol.green();
2211         rgbcol.b = qcol.blue();
2212         return true;
2213 }
2214
2215
2216 string const GuiApplication::hexName(ColorCode col)
2217 {
2218         return ltrim(fromqstr(d->color_cache_.get(col).name()), "#");
2219 }
2220
2221
2222 void GuiApplication::registerSocketCallback(int fd, SocketCallback func)
2223 {
2224         SocketNotifier * sn = new SocketNotifier(this, fd, func);
2225         d->socket_notifiers_[fd] = sn;
2226         connect(sn, SIGNAL(activated(int)), this, SLOT(socketDataReceived(int)));
2227 }
2228
2229
2230 void GuiApplication::socketDataReceived(int fd)
2231 {
2232         d->socket_notifiers_[fd]->func_();
2233 }
2234
2235
2236 void GuiApplication::unregisterSocketCallback(int fd)
2237 {
2238         d->socket_notifiers_.take(fd)->setEnabled(false);
2239 }
2240
2241
2242 void GuiApplication::commitData(QSessionManager & sm)
2243 {
2244         /// The implementation is required to avoid an application exit
2245         /// when session state save is triggered by session manager.
2246         /// The default implementation sends a close event to all
2247         /// visible top level widgets when session managment allows
2248         /// interaction.
2249         /// We are changing that to close all wiew one by one.
2250         /// FIXME: verify if the default implementation is enough now.
2251         if (sm.allowsInteraction() && !closeAllViews())
2252                 sm.cancel();
2253 }
2254
2255
2256 void GuiApplication::unregisterView(GuiView * gv)
2257 {
2258         LASSERT(d->views_[gv->id()] == gv, /**/);
2259         d->views_.remove(gv->id());
2260         if (current_view_ == gv)
2261                 current_view_ = 0;
2262 }
2263
2264
2265 bool GuiApplication::closeAllViews()
2266 {
2267         if (d->views_.empty())
2268                 return true;
2269
2270         // When a view/window was closed before without quitting LyX, there
2271         // are already entries in the lastOpened list.
2272         theSession().lastOpened().clear();
2273
2274         QList<GuiView *> views = d->views_.values();
2275         foreach (GuiView * view, views) {
2276                 if (!view->closeScheduled())
2277                         return false;
2278         }
2279
2280         d->views_.clear();
2281         return true;
2282 }
2283
2284
2285 GuiView & GuiApplication::view(int id) const
2286 {
2287         LASSERT(d->views_.contains(id), /**/);
2288         return *d->views_.value(id);
2289 }
2290
2291
2292 void GuiApplication::hideDialogs(string const & name, Inset * inset) const
2293 {
2294         QList<GuiView *> views = d->views_.values();
2295         foreach (GuiView * view, views)
2296                 view->hideDialog(name, inset);
2297 }
2298
2299
2300 Buffer const * GuiApplication::updateInset(Inset const * inset) const
2301 {
2302         Buffer const * buffer_ = 0;
2303         QHash<int, GuiView *>::iterator end = d->views_.end();
2304         for (QHash<int, GuiView *>::iterator it = d->views_.begin(); it != end; ++it) {
2305                 if (Buffer const * ptr = (*it)->updateInset(inset))
2306                         buffer_ = ptr;
2307         }
2308         return buffer_;
2309 }
2310
2311
2312 bool GuiApplication::searchMenu(FuncRequest const & func,
2313         docstring_list & names) const
2314 {
2315         return d->menus_.searchMenu(func, names);
2316 }
2317
2318
2319 bool GuiApplication::readUIFile(QString const & name, bool include)
2320 {
2321         LYXERR(Debug::INIT, "About to read " << name << "...");
2322
2323         FileName ui_path;
2324         if (include) {
2325                 ui_path = libFileSearch("ui", name, "inc");
2326                 if (ui_path.empty())
2327                         ui_path = libFileSearch("ui", changeExtension(name, "inc"));
2328         } else {
2329                 ui_path = libFileSearch("ui", name, "ui");
2330         }
2331
2332         if (ui_path.empty()) {
2333                 static const QString defaultUIFile = "default";
2334                 LYXERR(Debug::INIT, "Could not find " << name);
2335                 if (include) {
2336                         Alert::warning(_("Could not find UI definition file"),
2337                                 bformat(_("Error while reading the included file\n%1$s\n"
2338                                         "Please check your installation."), qstring_to_ucs4(name)));
2339                         return false;
2340                 }
2341                 if (name == defaultUIFile) {
2342                         LYXERR(Debug::INIT, "Could not find default UI file!!");
2343                         Alert::warning(_("Could not find default UI file"),
2344                                 _("LyX could not find the default UI file!\n"
2345                                   "Please check your installation."));
2346                         return false;
2347                 }
2348                 Alert::warning(_("Could not find UI definition file"),
2349                 bformat(_("Error while reading the configuration file\n%1$s\n"
2350                         "Falling back to default.\n"
2351                         "Please look under Tools>Preferences>User Interface and\n"
2352                         "check which User Interface file you are using."), qstring_to_ucs4(name)));
2353                 return readUIFile(defaultUIFile, false);
2354         }
2355
2356         // Ensure that a file is read only once (prevents include loops)
2357         static QStringList uifiles;
2358         QString const uifile = toqstr(ui_path.absFileName());
2359         if (uifiles.contains(uifile)) {
2360                 if (!include) {
2361                         // We are reading again the top uifile so reset the safeguard:
2362                         uifiles.clear();
2363                         d->menus_.reset();
2364                         d->toolbars_.reset();
2365                 } else {
2366                         LYXERR(Debug::INIT, "UI file '" << name << "' has been read already. "
2367                                 << "Is this an include loop?");
2368                         return false;
2369                 }
2370         }
2371         uifiles.push_back(uifile);
2372
2373         LYXERR(Debug::INIT, "Found " << name << " in " << ui_path);
2374
2375         enum {
2376                 ui_menuset = 1,
2377                 ui_toolbars,
2378                 ui_toolbarset,
2379                 ui_include,
2380                 ui_last
2381         };
2382
2383         LexerKeyword uitags[] = {
2384                 { "include", ui_include },
2385                 { "menuset", ui_menuset },
2386                 { "toolbars", ui_toolbars },
2387                 { "toolbarset", ui_toolbarset }
2388         };
2389
2390         Lexer lex(uitags);
2391         lex.setFile(ui_path);
2392         if (!lex.isOK()) {
2393                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
2394                        << endl;
2395         }
2396
2397         if (lyxerr.debugging(Debug::PARSER))
2398                 lex.printTable(lyxerr);
2399
2400         // store which ui files define Toolbars
2401         static QStringList toolbar_uifiles;
2402
2403         while (lex.isOK()) {
2404                 switch (lex.lex()) {
2405                 case ui_include: {
2406                         lex.next(true);
2407                         QString const file = toqstr(lex.getString());
2408                         if (!readUIFile(file, true))
2409                                 return false;
2410                         break;
2411                 }
2412                 case ui_menuset:
2413                         d->menus_.read(lex);
2414                         break;
2415
2416                 case ui_toolbarset:
2417                         d->toolbars_.readToolbars(lex);
2418                         break;
2419
2420                 case ui_toolbars:
2421                         d->toolbars_.readToolbarSettings(lex);
2422                         toolbar_uifiles.push_back(uifile);
2423                         break;
2424
2425                 default:
2426                         if (!rtrim(lex.getString()).empty())
2427                                 lex.printError("LyX::ReadUIFile: "
2428                                                "Unknown menu tag: `$$Token'");
2429                         break;
2430                 }
2431         }
2432
2433         if (include)
2434                 return true;
2435
2436         QSettings settings;
2437         settings.beginGroup("ui_files");
2438         bool touched = false;
2439         for (int i = 0; i != uifiles.size(); ++i) {
2440                 QFileInfo fi(uifiles[i]);
2441                 QDateTime const date_value = fi.lastModified();
2442                 QString const name_key = QString::number(i);
2443                 // if an ui file which defines Toolbars has changed,
2444                 // we have to reset the settings
2445                 if (toolbar_uifiles.contains(uifiles[i])
2446                  && (!settings.contains(name_key)
2447                  || settings.value(name_key).toString() != uifiles[i]
2448                  || settings.value(name_key + "/date").toDateTime() != date_value)) {
2449                         touched = true;
2450                         settings.setValue(name_key, uifiles[i]);
2451                         settings.setValue(name_key + "/date", date_value);
2452                 }
2453         }
2454         settings.endGroup();
2455         if (touched)
2456                 settings.remove("views");
2457
2458         return true;
2459 }
2460
2461
2462 void GuiApplication::onLastWindowClosed()
2463 {
2464         if (d->global_menubar_)
2465                 d->global_menubar_->grabKeyboard();
2466 }
2467
2468
2469 ////////////////////////////////////////////////////////////////////////
2470 //
2471 // X11 specific stuff goes here...
2472
2473 #ifdef Q_WS_X11
2474 bool GuiApplication::x11EventFilter(XEvent * xev)
2475 {
2476         if (!current_view_)
2477                 return false;
2478
2479         switch (xev->type) {
2480         case SelectionRequest: {
2481                 if (xev->xselectionrequest.selection != XA_PRIMARY)
2482                         break;
2483                 LYXERR(Debug::SELECTION, "X requested selection.");
2484                 BufferView * bv = current_view_->currentBufferView();
2485                 if (bv) {
2486                         docstring const sel = bv->requestSelection();
2487                         if (!sel.empty())
2488                                 d->selection_.put(sel);
2489                 }
2490                 break;
2491         }
2492         case SelectionClear: {
2493                 if (xev->xselectionclear.selection != XA_PRIMARY)
2494                         break;
2495                 LYXERR(Debug::SELECTION, "Lost selection.");
2496                 BufferView * bv = current_view_->currentBufferView();
2497                 if (bv)
2498                         bv->clearSelection();
2499                 break;
2500         }
2501         }
2502         return false;
2503 }
2504 #endif
2505
2506 } // namespace frontend
2507
2508
2509 void hideDialogs(std::string const & name, Inset * inset)
2510 {
2511         if (theApp())
2512                 frontend::guiApp->hideDialogs(name, inset);
2513 }
2514
2515
2516 ////////////////////////////////////////////////////////////////////
2517 //
2518 // Font stuff
2519 //
2520 ////////////////////////////////////////////////////////////////////
2521
2522 frontend::FontLoader & theFontLoader()
2523 {
2524         LASSERT(frontend::guiApp, /**/);
2525         return frontend::guiApp->fontLoader();
2526 }
2527
2528
2529 frontend::FontMetrics const & theFontMetrics(Font const & f)
2530 {
2531         return theFontMetrics(f.fontInfo());
2532 }
2533
2534
2535 frontend::FontMetrics const & theFontMetrics(FontInfo const & f)
2536 {
2537         LASSERT(frontend::guiApp, /**/);
2538         return frontend::guiApp->fontLoader().metrics(f);
2539 }
2540
2541
2542 ////////////////////////////////////////////////////////////////////
2543 //
2544 // Misc stuff
2545 //
2546 ////////////////////////////////////////////////////////////////////
2547
2548 frontend::Clipboard & theClipboard()
2549 {
2550         LASSERT(frontend::guiApp, /**/);
2551         return frontend::guiApp->clipboard();
2552 }
2553
2554
2555 frontend::Selection & theSelection()
2556 {
2557         LASSERT(frontend::guiApp, /**/);
2558         return frontend::guiApp->selection();
2559 }
2560
2561
2562 } // namespace lyx
2563
2564 #include "moc_GuiApplication.cpp"