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 "GuiClipboard.h"
  19 #include "GuiImage.h"
  20 #include "GuiKeySymbol.h"
  21 #include "GuiSelection.h"
  22 #include "GuiView.h"
  23 #include "Menus.h"
  24 #include "qt_helpers.h"
  25 #include "Toolbars.h"
  26
  27 #include "frontends/alert.h"
  28 #include "frontends/Application.h"
  29 #include "frontends/FontLoader.h"
  30 #include "frontends/FontMetrics.h"
  31
  32 #include "Buffer.h"
  33 #include "BufferList.h"
  34 #include "BufferView.h"
  35 #include "Color.h"
  36 #include "Font.h"
  37 #include "FuncRequest.h"
  38 #include "FuncStatus.h"
  39 #include "Language.h"
  40 #include "Lexer.h"
  41 #include "LyX.h"
  42 #include "LyXFunc.h"
  43 #include "LyXRC.h"
  44 #include "Session.h"
  45 #include "version.h"
  46
  47 #include "support/lassert.h"
  48 #include "support/debug.h"
  49 #include "support/ExceptionMessage.h"
  50 #include "support/FileName.h"
  51 #include "support/foreach.h"
  52 #include "support/ForkedCalls.h"
  53 #include "support/gettext.h"
  54 #include "support/lstrings.h"
  55 #include "support/os.h"
  56 #include "support/Package.h"
  57
  58 #ifdef Q_WS_MACX
  59 #include "support/linkback/LinkBackProxy.h"
  60 #endif
  61
  62 #include <QClipboard>
  63 #include <QEventLoop>
  64 #include <QFileOpenEvent>
  65 #include <QHash>
  66 #include <QLocale>
  67 #include <QLibraryInfo>
  68 #include <QMacPasteboardMime>
  69 #include <QMenuBar>
  70 #include <QMimeData>
  71 #include <QPixmapCache>
  72 #include <QRegExp>
  73 #include <QSessionManager>
  74 #include <QSocketNotifier>
  75 #include <QSortFilterProxyModel>
  76 #include <QStandardItemModel>
  77 #include <QTextCodec>
  78 #include <QTimer>
  79 #include <QTranslator>
  80 #include <QWidget>
  81
  82 #ifdef Q_WS_X11
  83 #include <X11/Xatom.h>
  84 #include <X11/Xlib.h>
  85 #undef CursorShape
  86 #undef None
  87 #endif
  88
  89 #ifdef Q_WS_WIN
  90 #include <QList>
  91 #include <QWindowsMime>
  92 #if defined(Q_CYGWIN_WIN) || defined(Q_CC_MINGW)
  93 #include <wtypes.h>
  94 #endif
  95 #include <objidl.h>
  96 #endif // Q_WS_WIN
  97
  98 #include <boost/bind.hpp>
  99
 100 #include <exception>
 101
 102 using namespace std;
 103 using namespace lyx::support;
 104
 105
 106 namespace lyx {
 107
 108 frontend::Application * createApplication(int & argc, char * argv[])
 109 {
 110         return new frontend::GuiApplication(argc, argv);
 111 }
 112
 113 namespace frontend {
 114
 115 class SocketNotifier : public QSocketNotifier
 116 {
 117 public:
 118         /// connect a connection notification from the LyXServerSocket
 119         SocketNotifier(QObject * parent, int fd, Application::SocketCallback func)
 120                 : QSocketNotifier(fd, QSocketNotifier::Read, parent), func_(func)
 121         {}
 122
 123 public:
 124         /// The callback function
 125         Application::SocketCallback func_;
 126 };
 127
 128
 129 ////////////////////////////////////////////////////////////////////////
 130 // Mac specific stuff goes here...
 131
 132 class MenuTranslator : public QTranslator
 133 {
 134 public:
 135         MenuTranslator(QObject * parent)
 136                 : QTranslator(parent)
 137         {}
 138
 139         QString translate(const char * /*context*/,
 140           const char * sourceText,
 141           const char * /*comment*/ = 0)
 142         {
 143                 string const s = sourceText;
 144                 if (s == N_("About %1") || s == N_("Preferences")
 145                                 || s == N_("Reconfigure") || s == N_("Quit %1"))
 146                         return qt_(s);
 147                 else
 148                         return QString();
 149         }
 150 };
 151
 152 class GlobalMenuBar : public QMenuBar
 153 {
 154 public:
 155         ///
 156         GlobalMenuBar() : QMenuBar(0) {}
 157
 158         ///
 159         bool event(QEvent * e)
 160         {
 161                 if (e->type() == QEvent::ShortcutOverride) {
 162                         //          && activeWindow() == 0) {
 163                         QKeyEvent * ke = static_cast<QKeyEvent*>(e);
 164                         KeySymbol sym;
 165                         setKeySymbol(&sym, ke);
 166                         theLyXFunc().processKeySym(sym, q_key_state(ke->modifiers()));
 167                         e->accept();
 168                         return true;
 169                 }
 170                 return false;
 171         }
 172 };
 173
 174 #ifdef Q_WS_MACX
 175 // QMacPasteboardMimeGraphics can only be compiled on Mac.
 176
 177 class QMacPasteboardMimeGraphics : public QMacPasteboardMime
 178 {
 179 public:
 180         QMacPasteboardMimeGraphics()
 181                 : QMacPasteboardMime(MIME_QT_CONVERTOR|MIME_ALL)
 182         {}
 183
 184         QString convertorName() { return "Graphics"; }
 185
 186         QString flavorFor(QString const & mime)
 187         {
 188                 LYXERR(Debug::ACTION, "flavorFor " << mime);
 189                 if (mime == pdfMimeType())
 190                         return QLatin1String("com.adobe.pdf");
 191                 return QString();
 192         }
 193
 194         QString mimeFor(QString flav)
 195         {
 196                 LYXERR(Debug::ACTION, "mimeFor " << flav);
 197                 if (flav == QLatin1String("com.adobe.pdf"))
 198                         return pdfMimeType();
 199                 return QString();
 200         }
 201
 202         bool canConvert(QString const & mime, QString flav)
 203         { return mimeFor(flav) == mime; }
 204
 205         QVariant convertToMime(QString const & mime, QList<QByteArray> data, QString flav)
 206         {
 207                 if(data.count() > 1)
 208                         qWarning("QMacPasteboardMimeGraphics: Cannot handle multiple member data");
 209                 return data.first();
 210         }
 211
 212         QList<QByteArray> convertFromMime(QString const & mime, QVariant data, QString flav)
 213         {
 214                 QList<QByteArray> ret;
 215                 ret.append(data.toByteArray());
 216                 return ret;
 217         }
 218 };
 219 #endif
 220
 221 ///////////////////////////////////////////////////////////////
 222 // You can find more platform specific stuff
 223 // at the end of this file...
 224 ///////////////////////////////////////////////////////////////
 225
 226 ////////////////////////////////////////////////////////////////////////
 227 // Windows specific stuff goes here...
 228
 229 #ifdef Q_WS_WIN
 230 // QWindowsMimeMetafile can only be compiled on Windows.
 231
 232 static FORMATETC cfFromMime(QString const & mimetype)
 233 {
 234         FORMATETC formatetc;
 235         if (mimetype == emfMimeType()) {
 236                 formatetc.cfFormat = CF_ENHMETAFILE;
 237                 formatetc.tymed = TYMED_ENHMF;
 238         } else if (mimetype == wmfMimeType()) {
 239                 formatetc.cfFormat = CF_METAFILEPICT;
 240                 formatetc.tymed = TYMED_MFPICT;
 241         }
 242         formatetc.ptd = 0;
 243         formatetc.dwAspect = DVASPECT_CONTENT;
 244         formatetc.lindex = -1;
 245         return formatetc;
 246 }
 247
 248
 249 class QWindowsMimeMetafile : public QWindowsMime {
 250 public:
 251         QWindowsMimeMetafile() {}
 252
 253         bool canConvertFromMime(FORMATETC const & formatetc,
 254                 QMimeData const * mimedata) const
 255         {
 256                 return false;
 257         }
 258
 259         bool canConvertToMime(QString const & mimetype,
 260                 IDataObject * pDataObj) const
 261         {
 262                 if (mimetype != emfMimeType() && mimetype != wmfMimeType())
 263                         return false;
 264                 FORMATETC formatetc = cfFromMime(mimetype);
 265                 return pDataObj->QueryGetData(&formatetc) == S_OK;
 266         }
 267
 268         bool convertFromMime(FORMATETC const & formatetc,
 269                 const QMimeData * mimedata, STGMEDIUM * pmedium) const
 270         {
 271                 return false;
 272         }
 273
 274         QVariant convertToMime(QString const & mimetype, IDataObject * pDataObj,
 275                 QVariant::Type preferredType) const
 276         {
 277                 QByteArray data;
 278                 if (!canConvertToMime(mimetype, pDataObj))
 279                         return data;
 280
 281                 FORMATETC formatetc = cfFromMime(mimetype);
 282                 STGMEDIUM s;
 283                 if (pDataObj->GetData(&formatetc, &s) != S_OK)
 284                         return data;
 285
 286                 int dataSize;
 287                 if (s.tymed == TYMED_ENHMF) {
 288                         dataSize = GetEnhMetaFileBits(s.hEnhMetaFile, 0, 0);
 289                         data.resize(dataSize);
 290                         dataSize = GetEnhMetaFileBits(s.hEnhMetaFile, dataSize,
 291                                 (LPBYTE)data.data());
 292                 } else if (s.tymed == TYMED_MFPICT) {
 293                         dataSize = GetMetaFileBitsEx((HMETAFILE)s.hMetaFilePict, 0, 0);
 294                         data.resize(dataSize);
 295                         dataSize = GetMetaFileBitsEx((HMETAFILE)s.hMetaFilePict, dataSize,
 296                                 (LPBYTE)data.data());
 297                 }
 298                 data.detach();
 299                 ReleaseStgMedium(&s);
 300
 301                 return data;
 302         }
 303
 304
 305         QVector<FORMATETC> formatsForMime(QString const & mimeType,
 306                 QMimeData const * mimeData) const
 307         {
 308                 QVector<FORMATETC> formats;
 309                 formats += cfFromMime(mimeType);
 310                 return formats;
 311         }
 312
 313         QString mimeForFormat(FORMATETC const & formatetc) const
 314         {
 315                 switch (formatetc.cfFormat) {
 316                 case CF_ENHMETAFILE:
 317                         return emfMimeType();
 318                 case CF_METAFILEPICT:
 319                         return wmfMimeType();
 320                 }
 321                 return QString();
 322         }
 323 };
 324
 325 #endif // Q_WS_WIN
 326
 327 ////////////////////////////////////////////////////////////////////////
 328 // GuiApplication::Private definition and implementation.
 329 ////////////////////////////////////////////////////////////////////////
 330
 331 struct GuiApplication::Private
 332 {
 333         Private()
 334                 : language_model_(0), global_menubar_(0)
 335         {
 336 #ifdef Q_WS_MACX
 337                 // Create the global default menubar which is shown for the dialogs
 338                 // and if no GuiView is visible.
 339                 global_menubar_ = new GlobalMenuBar();
 340 #endif
 341         }
 342
 343         ///
 344         QSortFilterProxyModel * language_model_;
 345         ///
 346         GuiClipboard clipboard_;
 347         ///
 348         GuiSelection selection_;
 349         ///
 350         FontLoader font_loader_;
 351         ///
 352         ColorCache color_cache_;
 353         ///
 354         QTranslator qt_trans_;
 355         ///
 356         QHash<int, SocketNotifier *> socket_notifiers_;
 357         ///
 358         Menus menus_;
 359         ///
 360         /// The global instance
 361         Toolbars toolbars_;
 362
 363         /// this timer is used for any regular events one wants to
 364         /// perform. at present it is used to check if forked processes
 365         /// are done.
 366         QTimer general_timer_;
 367
 368         /// Multiple views container.
 369         /**
 370         * Warning: This must not be a smart pointer as the destruction of the
 371         * object is handled by Qt when the view is closed
 372         * \sa Qt::WA_DeleteOnClose attribute.
 373         */
 374         QHash<int, GuiView *> views_;
 375
 376         /// Only used on mac.
 377         GlobalMenuBar * global_menubar_;
 378
 379 #ifdef Q_WS_MACX
 380         /// Linkback mime handler for MacOSX.
 381         QMacPasteboardMimeGraphics mac_pasteboard_mime_;
 382 #endif
 383
 384 #ifdef Q_WS_WIN
 385         /// WMF Mime handler for Windows clipboard.
 386         // FIXME for Windows Vista and Qt4 (see http://bugzilla.lyx.org/show_bug.cgi?id=4846)
 387         // But this makes LyX crash on exit when LyX is compiled in release mode and if there
 388         // is something in the clipboard.
 389         QWindowsMimeMetafile wmf_mime_;
 390 #endif
 391 };
 392
 393
 394 GuiApplication * guiApp;
 395
 396 GuiApplication::~GuiApplication()
 397 {
 398 #ifdef Q_WS_MACX
 399         closeAllLinkBackLinks();
 400 #endif
 401         delete d;
 402 }
 403
 404
 405 GuiApplication::GuiApplication(int & argc, char ** argv)
 406         : QApplication(argc, argv),     current_view_(0), d(new GuiApplication::Private)
 407 {
 408         QString app_name = "LyX";
 409         QCoreApplication::setOrganizationName(app_name);
 410         QCoreApplication::setOrganizationDomain("lyx.org");
 411         QCoreApplication::setApplicationName(app_name + "-" + lyx_version);
 412
 413         // FIXME: quitOnLastWindowClosed is true by default. We should have a
 414         // lyxrc setting for this in order to let the application stay resident.
 415         // But then we need some kind of dock icon, at least on Windows.
 416         /*
 417         if (lyxrc.quit_on_last_window_closed)
 418                 setQuitOnLastWindowClosed(false);
 419         */
 420 #ifdef Q_WS_MACX
 421         // FIXME: Do we need a lyxrc setting for this on Mac? This behaviour
 422         // seems to be the default case for applications like LyX.
 423         setQuitOnLastWindowClosed(false);
 424 #endif
 425
 426 #ifdef Q_WS_X11
 427         // doubleClickInterval() is 400 ms on X11 which is just too long.
 428         // On Windows and Mac OS X, the operating system's value is used.
 429         // On Microsoft Windows, calling this function sets the double
 430         // click interval for all applications. So we don't!
 431         QApplication::setDoubleClickInterval(300);
 432 #endif
 433
 434         // install translation file for Qt built-in dialogs
 435         QString language_name = QString("qt_") + QLocale::system().name();
 436
 437         // language_name can be short (e.g. qt_zh) or long (e.g. qt_zh_CN).
 438         // Short-named translator can be loaded from a long name, but not the
 439         // opposite. Therefore, long name should be used without truncation.
 440         // c.f. http://doc.trolltech.com/4.1/qtranslator.html#load
 441         if (d->qt_trans_.load(language_name,
 442                 QLibraryInfo::location(QLibraryInfo::TranslationsPath)))
 443         {
 444                 installTranslator(&d->qt_trans_);
 445                 // even if the language calls for RtL, don't do that
 446                 setLayoutDirection(Qt::LeftToRight);
 447                 LYXERR(Debug::GUI, "Successfully installed Qt translations for locale "
 448                         << language_name);
 449         } else
 450                 LYXERR(Debug::GUI, "Could not find  Qt translations for locale "
 451                         << language_name);
 452
 453 #ifdef Q_WS_MACX
 454         // This allows to translate the strings that appear in the LyX menu.
 455         /// A translator suitable for the entries in the LyX menu.
 456         /// Only needed with Qt/Mac.
 457         installTranslator(new MenuTranslator(this));
 458 #endif
 459         connect(this, SIGNAL(lastWindowClosed()), this, SLOT(onLastWindowClosed()));
 460
 461         using namespace lyx::graphics;
 462
 463         Image::newImage = boost::bind(&GuiImage::newImage);
 464         Image::loadableFormats = boost::bind(&GuiImage::loadableFormats);
 465
 466         // needs to be done before reading lyxrc
 467         QWidget w;
 468         lyxrc.dpi = (w.logicalDpiX() + w.logicalDpiY()) / 2;
 469
 470         guiApp = this;
 471
 472         // Set the cache to 5120 kilobytes which corresponds to screen size of
 473         // 1280 by 1024 pixels with a color depth of 32 bits.
 474         QPixmapCache::setCacheLimit(5120);
 475
 476         // Initialize RC Fonts
 477         if (lyxrc.roman_font_name.empty())
 478                 lyxrc.roman_font_name = fromqstr(romanFontName());
 479
 480         if (lyxrc.sans_font_name.empty())
 481                 lyxrc.sans_font_name = fromqstr(sansFontName());
 482
 483         if (lyxrc.typewriter_font_name.empty())
 484                 lyxrc.typewriter_font_name = fromqstr(typewriterFontName());
 485
 486         d->general_timer_.setInterval(500);
 487         connect(&d->general_timer_, SIGNAL(timeout()),
 488                 this, SLOT(handleRegularEvents()));
 489         d->general_timer_.start();
 490 }
 491
 492
 493 bool GuiApplication::getStatus(FuncRequest const & cmd, FuncStatus & flag) const
 494 {
 495         bool enable = true;
 496
 497         switch(cmd.action) {
 498
 499         case LFUN_WINDOW_CLOSE:
 500                 enable = d->views_.size() > 0;
 501                 break;
 502
 503         case LFUN_BUFFER_NEW:
 504         case LFUN_BUFFER_NEW_TEMPLATE:
 505         case LFUN_FILE_OPEN:
 506         case LFUN_SCREEN_FONT_UPDATE:
 507         case LFUN_SET_COLOR:
 508         case LFUN_WINDOW_NEW:
 509         case LFUN_LYX_QUIT:
 510                 enable = true;
 511                 break;
 512
 513         default:
 514                 return false;
 515         }
 516
 517         if (!enable)
 518                 flag.setEnabled(false);
 519
 520         return true;
 521 }
 522
 523
 524 bool GuiApplication::dispatch(FuncRequest const & cmd)
 525 {
 526         switch (cmd.action) {
 527
 528         case LFUN_WINDOW_NEW:
 529                 createView(toqstr(cmd.argument()));
 530                 break;
 531
 532         case LFUN_WINDOW_CLOSE:
 533                 // update bookmark pit of the current buffer before window close
 534                 for (size_t i = 0; i < LyX::ref().session().bookmarks().size(); ++i)
 535                         theLyXFunc().gotoBookmark(i+1, false, false);
 536                 current_view_->close();
 537                 break;
 538
 539         case LFUN_LYX_QUIT:
 540                 // quitting is triggered by the gui code
 541                 // (leaving the event loop).
 542                 if (current_view_)
 543                         current_view_->message(from_utf8(N_("Exiting.")));
 544                 if (closeAllViews())
 545                         quit();
 546                 break;
 547
 548         case LFUN_SCREEN_FONT_UPDATE: {
 549                 // handle the screen font changes.
 550                 d->font_loader_.update();
 551                 // Backup current_view_
 552                 GuiView * view = current_view_;
 553                 // Set current_view_ to zero to forbid GuiWorkArea::redraw()
 554                 // to skip the refresh.
 555                 current_view_ = 0;
 556                 BufferList::iterator it = theBufferList().begin();
 557                 BufferList::iterator const end = theBufferList().end();
 558                 for (; it != end; ++it)
 559                         (*it)->changed();
 560                 // Restore current_view_
 561                 current_view_ = view;
 562                 break;
 563         }
 564
 565         case LFUN_BUFFER_NEW:
 566                 if (d->views_.empty()
 567                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 568                         createView(QString(), false); // keep hidden
 569                         current_view_->newDocument(to_utf8(cmd.argument()), false);
 570                         current_view_->show();
 571                         setActiveWindow(current_view_);
 572                 } else {
 573                         current_view_->newDocument(to_utf8(cmd.argument()), false);
 574                 }
 575                 break;
 576
 577         case LFUN_BUFFER_NEW_TEMPLATE:
 578                 if (d->views_.empty()
 579                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 580                         createView();
 581                         current_view_->newDocument(to_utf8(cmd.argument()), true);
 582                         if (!current_view_->buffer())
 583                                 current_view_->close();
 584                 } else {
 585                         current_view_->newDocument(to_utf8(cmd.argument()), true);
 586                 }
 587                 break;
 588
 589         case LFUN_FILE_OPEN:
 590                 if (d->views_.empty()
 591                     || (!lyxrc.open_buffers_in_tabs && current_view_->buffer() != 0)) {
 592                         createView();
 593                         current_view_->openDocument(to_utf8(cmd.argument()));
 594                         if (!current_view_->buffer())
 595                                 current_view_->close();
 596                 } else
 597                         current_view_->openDocument(to_utf8(cmd.argument()));
 598                 break;
 599
 600         case LFUN_SET_COLOR: {
 601                 string lyx_name;
 602                 string const x11_name = split(to_utf8(cmd.argument()), lyx_name, ' ');
 603                 if (lyx_name.empty() || x11_name.empty()) {
 604                         current_view_->message(
 605                                 _("Syntax: set-color <lyx_name> <x11_name>"));
 606                         break;
 607                 }
 608
 609                 string const graphicsbg = lcolor.getLyXName(Color_graphicsbg);
 610                 bool const graphicsbg_changed = lyx_name == graphicsbg
 611                         && x11_name != graphicsbg;
 612                 if (graphicsbg_changed) {
 613                         // FIXME: The graphics cache no longer has a changeDisplay method.
 614 #if 0
 615                         graphics::GCache::get().changeDisplay(true);
 616 #endif
 617                 }
 618
 619                 if (!lcolor.setColor(lyx_name, x11_name)) {
 620                         current_view_->message(
 621                                         bformat(_("Set-color \"%1$s\" failed "
 622                                                                "- color is undefined or "
 623                                                                "may not be redefined"),
 624                                                                    from_utf8(lyx_name)));
 625                         break;
 626                 }
 627                 // Make sure we don't keep old colors in cache.
 628                 d->color_cache_.clear();
 629                 break;
 630         }
 631
 632         default:
 633                 // Notify the caller that the action has not been dispatched.
 634                 return false;
 635         }
 636
 637         // The action has been dispatched.
 638         return true;
 639 }
 640
 641
 642 void GuiApplication::resetGui()
 643 {
 644         QHash<int, GuiView *>::iterator it;
 645         for (it = d->views_.begin(); it != d->views_.end(); ++it)
 646                 (*it)->resetDialogs();
 647
 648         dispatch(FuncRequest(LFUN_SCREEN_FONT_UPDATE));
 649 }
 650
 651
 652 void GuiApplication::createView(QString const & geometry_arg, bool autoShow)
 653 {
 654         // release the keyboard which might have been grabed by the global
 655         // menubar on Mac to catch shortcuts even without any GuiView.
 656         if (d->global_menubar_)
 657                 d->global_menubar_->releaseKeyboard();
 658
 659         // create new view
 660         int id = 0;
 661         while (d->views_.find(id) != d->views_.end())
 662                 id++;
 663         GuiView * view = new GuiView(id);
 664
 665         // copy the icon size from old view
 666         if (current_view_)
 667                 view->setIconSize(current_view_->iconSize());
 668
 669         // register view
 670         d->views_[id] = view;
 671
 672         if (autoShow) {
 673                 view->show();
 674                 setActiveWindow(view);
 675         }
 676
 677         if (!geometry_arg.isEmpty()) {
 678 #ifdef Q_WS_WIN
 679                 int x, y;
 680                 int w, h;
 681                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
 682                 re.indexIn(geometry_arg);
 683                 w = re.cap(1).toInt();
 684                 h = re.cap(2).toInt();
 685                 x = re.cap(3).toInt();
 686                 y = re.cap(4).toInt();
 687                 view->setGeometry(x, y, w, h);
 688 #endif
 689         }
 690         view->setFocus();
 691         setCurrentView(view);
 692 }
 693
 694
 695 Clipboard & GuiApplication::clipboard()
 696 {
 697         return d->clipboard_;
 698 }
 699
 700
 701 Selection & GuiApplication::selection()
 702 {
 703         return d->selection_;
 704 }
 705
 706
 707 FontLoader & GuiApplication::fontLoader()
 708 {
 709         return d->font_loader_;
 710 }
 711
 712
 713 Toolbars const & GuiApplication::toolbars() const
 714 {
 715         return d->toolbars_;
 716 }
 717
 718
 719 Toolbars & GuiApplication::toolbars()
 720 {
 721         return d->toolbars_;
 722 }
 723
 724
 725 Menus const & GuiApplication::menus() const
 726 {
 727         return d->menus_;
 728 }
 729
 730
 731 Menus & GuiApplication::menus()
 732 {
 733         return d->menus_;
 734 }
 735
 736
 737 QList<int> GuiApplication::viewIds() const
 738 {
 739         return d->views_.keys();
 740 }
 741
 742
 743 ColorCache & GuiApplication::colorCache()
 744 {
 745         return d->color_cache_;
 746 }
 747
 748
 749 int GuiApplication::exec()
 750 {
 751         QTimer::singleShot(1, this, SLOT(execBatchCommands()));
 752         return QApplication::exec();
 753 }
 754
 755
 756 void GuiApplication::exit(int status)
 757 {
 758         QApplication::exit(status);
 759 }
 760
 761
 762 void GuiApplication::execBatchCommands()
 763 {
 764         // Read menus
 765         if (!readUIFile(toqstr(lyxrc.ui_file)))
 766                 // Gives some error box here.
 767                 return;
 768
 769         // init the global menubar on Mac. This must be done after the session
 770         // was recovered to know the "last files".
 771         if (d->global_menubar_)
 772                 d->menus_.fillMenuBar(d->global_menubar_, 0, true);
 773
 774         LyX::ref().execBatchCommands();
 775 }
 776
 777 QAbstractItemModel * GuiApplication::languageModel()
 778 {
 779         if (d->language_model_)
 780                 return d->language_model_;
 781
 782         QStandardItemModel * lang_model = new QStandardItemModel(this);
 783         lang_model->insertColumns(0, 1);
 784         int current_row;
 785         Languages::const_iterator it = languages.begin();
 786         Languages::const_iterator end = languages.end();
 787         for (; it != end; ++it) {
 788                 current_row = lang_model->rowCount();
 789                 lang_model->insertRows(current_row, 1);
 790                 QModelIndex item = lang_model->index(current_row, 0);
 791                 lang_model->setData(item, qt_(it->second.display()), Qt::DisplayRole);
 792                 lang_model->setData(item, toqstr(it->second.lang()), Qt::UserRole);
 793         }
 794         d->language_model_ = new QSortFilterProxyModel(this);
 795         d->language_model_->setSourceModel(lang_model);
 796 #if QT_VERSION >= 0x040300
 797         d->language_model_->setSortLocaleAware(true);
 798 #endif
 799         return d->language_model_;
 800 }
 801
 802
 803 void GuiApplication::restoreGuiSession()
 804 {
 805         if (!lyxrc.load_session)
 806                 return;
 807
 808         Session & session = LyX::ref().session();
 809         vector<FileName> const & lastopened = session.lastOpened().getfiles();
 810         // do not add to the lastfile list since these files are restored from
 811         // last session, and should be already there (regular files), or should
 812         // not be added at all (help files).
 813         for_each(lastopened.begin(), lastopened.end(),
 814                 bind(&GuiView::loadDocument, current_view_, _1, false));
 815
 816         // clear this list to save a few bytes of RAM
 817         session.lastOpened().clear();
 818 }
 819
 820
 821 QString const GuiApplication::romanFontName()
 822 {
 823         QFont font;
 824         font.setKerning(false);
 825         font.setStyleHint(QFont::Serif);
 826         font.setFamily("serif");
 827
 828         return QFontInfo(font).family();
 829 }
 830
 831
 832 QString const GuiApplication::sansFontName()
 833 {
 834         QFont font;
 835         font.setKerning(false);
 836         font.setStyleHint(QFont::SansSerif);
 837         font.setFamily("sans");
 838
 839         return QFontInfo(font).family();
 840 }
 841
 842
 843 QString const GuiApplication::typewriterFontName()
 844 {
 845         QFont font;
 846         font.setKerning(false);
 847         font.setStyleHint(QFont::TypeWriter);
 848         font.setFamily("monospace");
 849
 850         return QFontInfo(font).family();
 851 }
 852
 853
 854 void GuiApplication::handleRegularEvents()
 855 {
 856         ForkedCallsController::handleCompletedProcesses();
 857 }
 858
 859
 860 bool GuiApplication::event(QEvent * e)
 861 {
 862         switch(e->type()) {
 863         case QEvent::FileOpen: {
 864                 // Open a file; this happens only on Mac OS X for now
 865                 QFileOpenEvent * foe = static_cast<QFileOpenEvent *>(e);
 866
 867                 if (!current_view_ || !current_view_->view())
 868                         // The application is not properly initialized yet.
 869                         // So we acknowledge the event and delay the file opening
 870                         // until LyX is ready.
 871                         // FIXME UNICODE: FileName accept an utf8 encoded string.
 872                         LyX::ref().addFileToLoad(fromqstr(foe->file()));
 873                 else
 874                         lyx::dispatch(FuncRequest(LFUN_FILE_OPEN,
 875                                 qstring_to_ucs4(foe->file())));
 876
 877                 e->accept();
 878                 return true;
 879         }
 880         default:
 881                 return QApplication::event(e);
 882         }
 883 }
 884
 885
 886 bool GuiApplication::notify(QObject * receiver, QEvent * event)
 887 {
 888         try {
 889                 return QApplication::notify(receiver, event);
 890         }
 891         catch (ExceptionMessage const & e) {
 892                 switch(e.type_) {
 893                 case ErrorException:
 894                         LyX::cref().emergencyCleanup();
 895                         setQuitOnLastWindowClosed(false);
 896                         closeAllViews();
 897                         Alert::error(e.title_, e.details_);
 898 #ifndef NDEBUG
 899                         // Properly crash in debug mode in order to get a useful backtrace.
 900                         abort();
 901 #endif
 902                         // In release mode, try to exit gracefully.
 903                         this->exit(1);
 904
 905                 case BufferException: {
 906                         Buffer * buf = current_view_->buffer();
 907                         docstring details = e.details_ + '\n';
 908                         details += theBufferList().emergencyWrite(buf);
 909                         theBufferList().release(buf);
 910                         details += "\n" + _("The current document was closed.");
 911                         Alert::error(e.title_, details);
 912                         return false;
 913                 }
 914                 case WarningException:
 915                         Alert::warning(e.title_, e.details_);
 916                         return false;
 917                 }
 918         }
 919         catch (exception const & e) {
 920                 docstring s = _("LyX has caught an exception, it will now "
 921                         "attempt to save all unsaved documents and exit."
 922                         "\n\nException: ");
 923                 s += from_ascii(e.what());
 924                 Alert::error(_("Software exception Detected"), s);
 925                 LyX::cref().exit(1);
 926         }
 927         catch (...) {
 928                 docstring s = _("LyX has caught some really weird exception, it will "
 929                         "now attempt to save all unsaved documents and exit.");
 930                 Alert::error(_("Software exception Detected"), s);
 931                 LyX::cref().exit(1);
 932         }
 933
 934         return false;
 935 }
 936
 937
 938 bool GuiApplication::getRgbColor(ColorCode col, RGBColor & rgbcol)
 939 {
 940         QColor const & qcol = d->color_cache_.get(col);
 941         if (!qcol.isValid()) {
 942                 rgbcol.r = 0;
 943                 rgbcol.g = 0;
 944                 rgbcol.b = 0;
 945                 return false;
 946         }
 947         rgbcol.r = qcol.red();
 948         rgbcol.g = qcol.green();
 949         rgbcol.b = qcol.blue();
 950         return true;
 951 }
 952
 953
 954 string const GuiApplication::hexName(ColorCode col)
 955 {
 956         return ltrim(fromqstr(d->color_cache_.get(col).name()), "#");
 957 }
 958
 959
 960 void GuiApplication::registerSocketCallback(int fd, SocketCallback func)
 961 {
 962         SocketNotifier * sn = new SocketNotifier(this, fd, func);
 963         d->socket_notifiers_[fd] = sn;
 964         connect(sn, SIGNAL(activated(int)), this, SLOT(socketDataReceived(int)));
 965 }
 966
 967
 968 void GuiApplication::socketDataReceived(int fd)
 969 {
 970         d->socket_notifiers_[fd]->func_();
 971 }
 972
 973
 974 void GuiApplication::unregisterSocketCallback(int fd)
 975 {
 976         d->socket_notifiers_.take(fd)->setEnabled(false);
 977 }
 978
 979
 980 void GuiApplication::commitData(QSessionManager & sm)
 981 {
 982         /// The implementation is required to avoid an application exit
 983         /// when session state save is triggered by session manager.
 984         /// The default implementation sends a close event to all
 985         /// visible top level widgets when session managment allows
 986         /// interaction.
 987         /// We are changing that to close all wiew one by one.
 988         /// FIXME: verify if the default implementation is enough now.
 989         if (sm.allowsInteraction() && !closeAllViews())
 990                 sm.cancel();
 991 }
 992
 993
 994 void GuiApplication::unregisterView(GuiView * gv)
 995 {
 996         LASSERT(d->views_[gv->id()] == gv, /**/);
 997         d->views_.remove(gv->id());
 998         if (current_view_ == gv) {
 999                 current_view_ = 0;
1000                 theLyXFunc().setLyXView(0);
1001         }
1002 }
1003
1004
1005 bool GuiApplication::closeAllViews()
1006 {
1007         if (d->views_.empty())
1008                 return true;
1009
1010         QList<GuiView *> views = d->views_.values();
1011         foreach (GuiView * view, views) {
1012                 if (!view->close())
1013                         return false;
1014         }
1015
1016         d->views_.clear();
1017         return true;
1018 }
1019
1020
1021 GuiView & GuiApplication::view(int id) const
1022 {
1023         LASSERT(d->views_.contains(id), /**/);
1024         return *d->views_.value(id);
1025 }
1026
1027
1028 void GuiApplication::hideDialogs(string const & name, Inset * inset) const
1029 {
1030         QList<GuiView *> views = d->views_.values();
1031         foreach (GuiView * view, views)
1032                 view->hideDialog(name, inset);
1033 }
1034
1035
1036 Buffer const * GuiApplication::updateInset(Inset const * inset) const
1037 {
1038         Buffer const * buffer_ = 0;
1039         QHash<int, GuiView *>::iterator end = d->views_.end();
1040         for (QHash<int, GuiView *>::iterator it = d->views_.begin(); it != end; ++it) {
1041                 if (Buffer const * ptr = (*it)->updateInset(inset))
1042                         buffer_ = ptr;
1043         }
1044         return buffer_;
1045 }
1046
1047
1048 bool GuiApplication::searchMenu(FuncRequest const & func,
1049         docstring_list & names) const
1050 {
1051         return d->menus_.searchMenu(func, names);
1052 }
1053
1054
1055 bool GuiApplication::readUIFile(QString const & name, bool include)
1056 {
1057         enum {
1058                 ui_menuset = 1,
1059                 ui_toolbars,
1060                 ui_toolbarset,
1061                 ui_include,
1062                 ui_last
1063         };
1064
1065         LexerKeyword uitags[] = {
1066                 { "include", ui_include },
1067                 { "menuset", ui_menuset },
1068                 { "toolbars", ui_toolbars },
1069                 { "toolbarset", ui_toolbarset }
1070         };
1071
1072         // Ensure that a file is read only once (prevents include loops)
1073         static QStringList uifiles;
1074         if (uifiles.contains(name)) {
1075                 LYXERR(Debug::INIT, "UI file '" << name << "' has been read already. "
1076                                     << "Is this an include loop?");
1077                 return false;
1078         }
1079
1080         LYXERR(Debug::INIT, "About to read " << name << "...");
1081
1082         FileName ui_path;
1083         if (include) {
1084                 ui_path = libFileSearch("ui", name, "inc");
1085                 if (ui_path.empty())
1086                         ui_path = libFileSearch("ui", changeExtension(name, "inc"));
1087         } else {
1088                 ui_path = libFileSearch("ui", name, "ui");
1089         }
1090
1091         if (ui_path.empty()) {
1092                 LYXERR(Debug::INIT, "Could not find " << name);
1093                 Alert::warning(_("Could not find UI defintion file"),
1094                                bformat(_("Error while reading the configuration file\n%1$s.\n"
1095                                    "Please check your installation."), qstring_to_ucs4(name)));
1096                 return false;
1097         }
1098
1099         uifiles.push_back(name);
1100
1101         LYXERR(Debug::INIT, "Found " << name << " in " << ui_path);
1102         Lexer lex(uitags);
1103         lex.setFile(ui_path);
1104         if (!lex.isOK()) {
1105                 lyxerr << "Unable to set LyXLeX for ui file: " << ui_path
1106                        << endl;
1107         }
1108
1109         if (lyxerr.debugging(Debug::PARSER))
1110                 lex.printTable(lyxerr);
1111
1112         while (lex.isOK()) {
1113                 switch (lex.lex()) {
1114                 case ui_include: {
1115                         lex.next(true);
1116                         QString const file = toqstr(lex.getString());
1117                         if (!readUIFile(file, true))
1118                                 return false;
1119                         break;
1120                 }
1121                 case ui_menuset:
1122                         d->menus_.read(lex);
1123                         break;
1124
1125                 case ui_toolbarset:
1126                         d->toolbars_.readToolbars(lex);
1127                         break;
1128
1129                 case ui_toolbars:
1130                         d->toolbars_.readToolbarSettings(lex);
1131                         break;
1132
1133                 default:
1134                         if (!rtrim(lex.getString()).empty())
1135                                 lex.printError("LyX::ReadUIFile: "
1136                                                "Unknown menu tag: `$$Token'");
1137                         break;
1138                 }
1139         }
1140         return true;
1141 }
1142
1143
1144 void GuiApplication::onLastWindowClosed()
1145 {
1146         if (d->global_menubar_)
1147                 d->global_menubar_->grabKeyboard();
1148 }
1149
1150
1151 ////////////////////////////////////////////////////////////////////////
1152 //
1153 // X11 specific stuff goes here...
1154
1155 #ifdef Q_WS_X11
1156 bool GuiApplication::x11EventFilter(XEvent * xev)
1157 {
1158         if (!current_view_)
1159                 return false;
1160
1161         switch (xev->type) {
1162         case SelectionRequest: {
1163                 if (xev->xselectionrequest.selection != XA_PRIMARY)
1164                         break;
1165                 LYXERR(Debug::GUI, "X requested selection.");
1166                 BufferView * bv = current_view_->view();
1167                 if (bv) {
1168                         docstring const sel = bv->requestSelection();
1169                         if (!sel.empty())
1170                                 d->selection_.put(sel);
1171                 }
1172                 break;
1173         }
1174         case SelectionClear: {
1175                 if (xev->xselectionclear.selection != XA_PRIMARY)
1176                         break;
1177                 LYXERR(Debug::GUI, "Lost selection.");
1178                 BufferView * bv = current_view_->view();
1179                 if (bv)
1180                         bv->clearSelection();
1181                 break;
1182         }
1183         }
1184         return false;
1185 }
1186 #endif
1187
1188 } // namespace frontend
1189
1190
1191 void hideDialogs(std::string const & name, Inset * inset)
1192 {
1193         if (theApp())
1194                 theApp()->hideDialogs(name, inset);
1195 }
1196
1197
1198 ////////////////////////////////////////////////////////////////////
1199 //
1200 // Font stuff
1201 //
1202 ////////////////////////////////////////////////////////////////////
1203
1204 frontend::FontLoader & theFontLoader()
1205 {
1206         LASSERT(frontend::guiApp, /**/);
1207         return frontend::guiApp->fontLoader();
1208 }
1209
1210
1211 frontend::FontMetrics const & theFontMetrics(Font const & f)
1212 {
1213         return theFontMetrics(f.fontInfo());
1214 }
1215
1216
1217 frontend::FontMetrics const & theFontMetrics(FontInfo const & f)
1218 {
1219         LASSERT(frontend::guiApp, /**/);
1220         return frontend::guiApp->fontLoader().metrics(f);
1221 }
1222
1223
1224 ////////////////////////////////////////////////////////////////////
1225 //
1226 // Misc stuff
1227 //
1228 ////////////////////////////////////////////////////////////////////
1229
1230 frontend::Clipboard & theClipboard()
1231 {
1232         LASSERT(frontend::guiApp, /**/);
1233         return frontend::guiApp->clipboard();
1234 }
1235
1236
1237 frontend::Selection & theSelection()
1238 {
1239         LASSERT(frontend::guiApp, /**/);
1240         return frontend::guiApp->selection();
1241 }
1242
1243 } // namespace lyx
1244
1245 #include "GuiApplication_moc.cpp"