src/frontends/qt4/GuiView.cpp

   1 /**
   2  * \file GuiView.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Lars Gullik Bjønnes
   7  * \author John Levon
   8  * \author Abdelrazak Younes
   9  * \author Peter Kümmel
  10  *
  11  * Full author contact details are available in file CREDITS.
  12  */
  13
  14 #include <config.h>
  15
  16 #include "GuiView.h"
  17
  18 #include "GuiApplication.h"
  19 #include "GuiWorkArea.h"
  20 #include "GuiKeySymbol.h"
  21 #include "GuiMenubar.h"
  22 #include "GuiToolbar.h"
  23 #include "GuiToolbars.h"
  24 #include "Dialogs.h"
  25
  26 #include "qt_helpers.h"
  27
  28 #include "frontends/Dialogs.h"
  29
  30 #include "support/filetools.h"
  31 #include "support/convert.h"
  32 #include "support/lstrings.h"
  33 #include "support/os.h"
  34
  35 #include "buffer_funcs.h"
  36 #include "Buffer.h"
  37 #include "BufferList.h"
  38 #include "BufferParams.h"
  39 #include "BufferView.h"
  40 #include "Cursor.h"
  41 #include "debug.h"
  42 #include "ErrorList.h"
  43 #include "FuncRequest.h"
  44 #include "gettext.h"
  45 #include "Intl.h"
  46 #include "Layout.h"
  47 #include "LyXFunc.h"
  48 #include "LyX.h"
  49 #include "LyXRC.h"
  50 #include "MenuBackend.h"
  51 #include "Paragraph.h"
  52 #include "TextClass.h"
  53 #include "Text.h"
  54 #include "ToolbarBackend.h"
  55 #include "version.h"
  56
  57 #include "support/lstrings.h"
  58 #include "support/filetools.h" // OnlyFilename()
  59 #include "support/Timeout.h"
  60
  61 #include <QAction>
  62 #include <QApplication>
  63 #include <QCloseEvent>
  64 #include <QDesktopWidget>
  65 #include <QDragEnterEvent>
  66 #include <QDropEvent>
  67 #include <QList>
  68 #include <QMenu>
  69 #include <QPainter>
  70 #include <QPixmap>
  71 #include <QPoint>
  72 #include <QPushButton>
  73 #include <QSettings>
  74 #include <QShowEvent>
  75 #include <QSplitter>
  76 #include <QStackedWidget>
  77 #include <QStatusBar>
  78 #include <QToolBar>
  79 #include <QUrl>
  80
  81 #include <boost/bind.hpp>
  82 #include <boost/current_function.hpp>
  83
  84 #ifdef HAVE_SYS_TIME_H
  85 # include <sys/time.h>
  86 #endif
  87 #ifdef HAVE_UNISTD_H
  88 # include <unistd.h>
  89 #endif
  90
  91 using std::endl;
  92 using std::string;
  93 using std::vector;
  94
  95 namespace lyx {
  96
  97 extern bool quitting;
  98
  99 namespace frontend {
 100
 101 using support::bformat;
 102 using support::FileName;
 103 using support::makeDisplayPath;
 104 using support::onlyFilename;
 105
 106 namespace {
 107
 108 int const statusbar_timer_value = 3000;
 109
 110 class BackgroundWidget : public QWidget
 111 {
 112 public:
 113         BackgroundWidget(QString const & file, QString const & text)
 114         {
 115                 splash_ = new QPixmap(file);
 116                 if (!splash_) {
 117                         lyxerr << "could not load splash screen: '" << fromqstr(file) << "'" << endl;
 118                         return;
 119                 }
 120
 121                 QPainter pain(splash_);
 122                 pain.setPen(QColor(255, 255, 0));
 123                 QFont font;
 124                 // The font used to display the version info
 125                 font.setStyleHint(QFont::SansSerif);
 126                 font.setWeight(QFont::Bold);
 127                 font.setPointSize(convert<int>(lyxrc.font_sizes[FONT_SIZE_LARGE]));
 128                 pain.setFont(font);
 129                 pain.drawText(260, 270, text);
 130         }
 131
 132         void paintEvent(QPaintEvent *)
 133         {
 134                 if (!splash_)
 135                         return;
 136
 137                 int x = (width() - splash_->width()) / 2;
 138                 int y = (height() - splash_->height()) / 2;
 139                 QPainter pain(this);
 140                 pain.drawPixmap(x, y, *splash_);
 141         }
 142
 143 private:
 144         QPixmap * splash_;
 145 };
 146
 147 } // namespace anon
 148
 149
 150 struct GuiView::GuiViewPrivate
 151 {
 152         GuiViewPrivate()
 153                 : current_work_area_(0), posx_offset(0), posy_offset(0)
 154         {}
 155
 156         ~GuiViewPrivate()
 157         {
 158                 delete splitter_;
 159                 delete bg_widget_;
 160                 delete stack_widget_;
 161                 delete menubar_;
 162                 delete toolbars_;
 163         }
 164
 165         unsigned int smallIconSize;
 166         unsigned int normalIconSize;
 167         unsigned int bigIconSize;
 168         // static needed by "New Window"
 169         static unsigned int lastIconSize;
 170
 171         QMenu * toolBarPopup(GuiView * parent)
 172         {
 173                 // FIXME: translation
 174                 QMenu * menu = new QMenu(parent);
 175                 QActionGroup * iconSizeGroup = new QActionGroup(parent);
 176
 177                 QAction * smallIcons = new QAction(iconSizeGroup);
 178                 smallIcons->setText(qt_("Small-sized icons"));
 179                 smallIcons->setCheckable(true);
 180                 QObject::connect(smallIcons, SIGNAL(triggered()),
 181                         parent, SLOT(smallSizedIcons()));
 182                 menu->addAction(smallIcons);
 183
 184                 QAction * normalIcons = new QAction(iconSizeGroup);
 185                 normalIcons->setText(qt_("Normal-sized icons"));
 186                 normalIcons->setCheckable(true);
 187                 QObject::connect(normalIcons, SIGNAL(triggered()),
 188                         parent, SLOT(normalSizedIcons()));
 189                 menu->addAction(normalIcons);
 190
 191                 QAction * bigIcons = new QAction(iconSizeGroup);
 192                 bigIcons->setText(qt_("Big-sized icons"));
 193                 bigIcons->setCheckable(true);
 194                 QObject::connect(bigIcons, SIGNAL(triggered()),
 195                         parent, SLOT(bigSizedIcons()));
 196                 menu->addAction(bigIcons);
 197
 198                 unsigned int cur = parent->iconSize().width();
 199                 if ( cur == parent->d.smallIconSize)
 200                         smallIcons->setChecked(true);
 201                 else if (cur == parent->d.normalIconSize)
 202                         normalIcons->setChecked(true);
 203                 else if (cur == parent->d.bigIconSize)
 204                         bigIcons->setChecked(true);
 205
 206                 return menu;
 207         }
 208
 209         void initBackground()
 210         {
 211                 LYXERR(Debug::GUI, "show banner: " << lyxrc.show_banner);
 212                 /// The text to be written on top of the pixmap
 213                 QString const text = lyx_version ? QString(lyx_version) : qt_("unknown version");
 214                 bg_widget_ = new BackgroundWidget(":/images/banner.png", text);
 215         }
 216
 217         void setBackground()
 218         {
 219                 stack_widget_->setCurrentWidget(bg_widget_);
 220                 bg_widget_->setUpdatesEnabled(true);
 221         }
 222
 223         TabWorkArea * tabWorkArea(int i)
 224         {
 225                 return dynamic_cast<TabWorkArea *>(splitter_->widget(i));
 226         }
 227
 228         TabWorkArea * currentTabWorkArea()
 229         {
 230                 if (splitter_->count() == 1)
 231                         // The first TabWorkArea is always the first one, if any.
 232                         return tabWorkArea(0);
 233
 234                 TabWorkArea * tab_widget = 0;
 235                 for (int i = 0; i != splitter_->count(); ++i) {
 236                         QWidget * w = splitter_->widget(i);
 237                         if (!w->hasFocus())
 238                                 continue;
 239                         tab_widget = dynamic_cast<TabWorkArea *>(w);
 240                         if (tab_widget)
 241                                 break;
 242                 }
 243
 244                 return tab_widget;
 245         }
 246
 247 public:
 248         ///
 249         string cur_title;
 250
 251         GuiWorkArea * current_work_area_;
 252         int posx_offset;
 253         int posy_offset;
 254
 255         QSplitter * splitter_;
 256         QStackedWidget * stack_widget_;
 257         BackgroundWidget * bg_widget_;
 258         /// view's menubar
 259         GuiMenubar * menubar_;
 260         /// view's toolbars
 261         GuiToolbars * toolbars_;
 262         ///
 263         docstring current_layout;
 264 };
 265
 266
 267 unsigned int GuiView::GuiViewPrivate::lastIconSize = 0;
 268
 269
 270 GuiView::GuiView(int id)
 271         : QMainWindow(), LyXView(id),
 272           d(*new GuiViewPrivate),
 273                 quitting_by_menu_(false),
 274                 autosave_timeout_(new Timeout(5000)),
 275           dialogs_(new Dialogs(*this))
 276 {
 277         // Start autosave timer
 278         if (lyxrc.autosave) {
 279                 autosave_timeout_->timeout.connect(boost::bind(&GuiView::autoSave, this));
 280                 autosave_timeout_->setTimeout(lyxrc.autosave * 1000);
 281                 autosave_timeout_->start();
 282         }
 283
 284         // Qt bug? signal lastWindowClosed does not work
 285         setAttribute(Qt::WA_QuitOnClose, false);
 286         setAttribute(Qt::WA_DeleteOnClose, true);
 287
 288         // hardcode here the platform specific icon size
 289         d.smallIconSize = 14;   // scaling problems
 290         d.normalIconSize = 20;  // ok, default
 291         d.bigIconSize = 26;             // better for some math icons
 292
 293 #ifndef Q_WS_MACX
 294         // assign an icon to main form. We do not do it under Qt/Mac,
 295         // since the icon is provided in the application bundle.
 296         setWindowIcon(QPixmap(":/images/lyx.png"));
 297 #endif
 298
 299
 300         d.splitter_ = new QSplitter;
 301
 302         d.initBackground();
 303         LYXERR(Debug::GUI, "stack widget!");
 304         d.stack_widget_ = new QStackedWidget;
 305         d.stack_widget_->addWidget(d.bg_widget_);
 306         d.stack_widget_->addWidget(d.splitter_);
 307         setCentralWidget(d.stack_widget_);
 308
 309         // For Drag&Drop.
 310         setAcceptDrops(true);
 311 }
 312
 313
 314 GuiView::~GuiView()
 315 {
 316         delete dialogs_;
 317         delete autosave_timeout_;
 318         delete &d;
 319 }
 320
 321
 322 void GuiView::close()
 323 {
 324         quitting_by_menu_ = true;
 325         d.current_work_area_ = 0;
 326         for (int i = 0; i != d.splitter_->count(); ++i) {
 327                 TabWorkArea * twa = d.tabWorkArea(i);
 328                 if (twa)
 329                         twa->closeAll();
 330         }
 331         QMainWindow::close();
 332         quitting_by_menu_ = false;
 333 }
 334
 335
 336 void GuiView::setFocus()
 337 {
 338         if (d.current_work_area_)
 339                 d.current_work_area_->setFocus();
 340         else
 341                 QWidget::setFocus();
 342 }
 343
 344
 345 QMenu* GuiView::createPopupMenu()
 346 {
 347         return d.toolBarPopup(this);
 348 }
 349
 350
 351 void GuiView::init()
 352 {
 353         setMinimumSize(300, 200);
 354         // GuiToolbars *must* be initialised before GuiMenubar.
 355         d.toolbars_ = new GuiToolbars(*this);
 356         // FIXME: GuiToolbars::init() cannot be integrated in the ctor
 357         // because LyXFunc::getStatus() needs a properly initialized
 358         // GuiToolbars object (for LFUN_TOOLBAR_TOGGLE).
 359         d.toolbars_->init();
 360         d.menubar_ = new GuiMenubar(this, menubackend);
 361
 362         statusBar()->setSizeGripEnabled(true);
 363
 364         QObject::connect(&statusbar_timer_, SIGNAL(timeout()),
 365                 this, SLOT(clearMessage()));
 366
 367         d.setBackground();
 368
 369         if (!lyxrc.allow_geometry_session)
 370                 setGeometry(50, 50, 690, 510);
 371
 372         // Now take care of session management.
 373         QSettings settings;
 374         QString const key = "view-" + QString::number(id());
 375 #ifdef Q_WS_X11
 376         QPoint pos = settings.value(key + "/pos", QPoint(50, 50)).toPoint();
 377         QSize size = settings.value(key + "/size", QSize(690, 510)).toSize();
 378         resize(size);
 379         move(pos);
 380 #else
 381         if (!restoreGeometry(settings.value(key + "/geometry").toByteArray()))
 382                 setGeometry(50, 50, 690, 510);
 383 #endif
 384         setIconSize(settings.value(key + "/icon_size").toSize());
 385 }
 386
 387
 388 void GuiView::showEvent(QShowEvent * e)
 389 {
 390         LYXERR(Debug::GUI, "Passed Geometry "
 391                 << size().height() << "x" << size().width()
 392                 << "+" << pos().x() << "+" << pos().y());
 393
 394         if (d.splitter_->count() == 0)
 395                 // No work area, switch to the background widget.
 396                 d.setBackground();
 397
 398         QMainWindow::showEvent(e);
 399 }
 400
 401
 402 void GuiView::closeEvent(QCloseEvent * close_event)
 403 {
 404         // we may have been called through the close window button
 405         // which bypasses the LFUN machinery.
 406         if (!quitting_by_menu_ && guiApp->viewCount() == 1) {
 407                 if (!theBufferList().quitWriteAll()) {
 408                         close_event->ignore();
 409                         return;
 410                 }
 411         }
 412
 413         // Make sure that no LFUN use this close to be closed View.
 414         theLyXFunc().setLyXView(0);
 415         // Make sure the timer time out will not trigger a statusbar update.
 416         statusbar_timer_.stop();
 417
 418         if (lyxrc.allow_geometry_session) {
 419                 QSettings settings;
 420                 QString const key = "view-" + QString::number(id());
 421 #ifdef Q_WS_X11
 422                 settings.setValue(key + "/pos", pos());
 423                 settings.setValue(key + "/size", size());
 424 #else
 425                 settings.setValue(key + "/geometry", saveGeometry());
 426 #endif
 427                 settings.setValue(key + "/icon_size", iconSize());
 428                 d.toolbars_->saveToolbarInfo();
 429         }
 430
 431         guiApp->unregisterView(id());
 432         if (guiApp->viewCount() > 0) {
 433                 // Just close the window and do nothing else if this is not the
 434                 // last window.
 435                 close_event->accept();
 436                 return;
 437         }
 438
 439         quitting = true;
 440
 441         // this is the place where we leave the frontend.
 442         // it is the only point at which we start quitting.
 443         close_event->accept();
 444         // quit the event loop
 445         qApp->quit();
 446 }
 447
 448
 449 void GuiView::dragEnterEvent(QDragEnterEvent * event)
 450 {
 451         if (event->mimeData()->hasUrls())
 452                 event->accept();
 453         /// \todo Ask lyx-devel is this is enough:
 454         /// if (event->mimeData()->hasFormat("text/plain"))
 455         ///     event->acceptProposedAction();
 456 }
 457
 458
 459 void GuiView::dropEvent(QDropEvent* event)
 460 {
 461         QList<QUrl> files = event->mimeData()->urls();
 462         if (files.isEmpty())
 463                 return;
 464
 465         LYXERR(Debug::GUI, BOOST_CURRENT_FUNCTION << " got URLs!");
 466         for (int i = 0; i != files.size(); ++i) {
 467                 string const file = support::os::internal_path(fromqstr(
 468                         files.at(i).toLocalFile()));
 469                 if (!file.empty())
 470                         dispatch(FuncRequest(LFUN_FILE_OPEN, file));
 471         }
 472 }
 473
 474
 475 void GuiView::message(docstring const & str)
 476 {
 477         statusBar()->showMessage(toqstr(str));
 478         statusbar_timer_.stop();
 479         statusbar_timer_.start(statusbar_timer_value);
 480 }
 481
 482
 483 void GuiView::smallSizedIcons()
 484 {
 485         setIconSize(QSize(d.smallIconSize, d.smallIconSize));
 486 }
 487
 488
 489 void GuiView::normalSizedIcons()
 490 {
 491         setIconSize(QSize(d.normalIconSize, d.normalIconSize));
 492 }
 493
 494
 495 void GuiView::bigSizedIcons()
 496 {
 497         setIconSize(QSize(d.bigIconSize, d.bigIconSize));
 498 }
 499
 500
 501 void GuiView::clearMessage()
 502 {
 503         if (!hasFocus())
 504                 return;
 505         theLyXFunc().setLyXView(this);
 506         statusBar()->showMessage(toqstr(theLyXFunc().viewStatusMessage()));
 507         statusbar_timer_.stop();
 508 }
 509
 510
 511 void GuiView::updateWindowTitle(GuiWorkArea * wa)
 512 {
 513         if (wa != d.current_work_area_)
 514                 return;
 515         setWindowTitle(qt_("LyX: ") + wa->windowTitle());
 516         setWindowIconText(wa->windowIconText());
 517 }
 518
 519
 520 void GuiView::on_currentWorkAreaChanged(GuiWorkArea * wa)
 521 {
 522         disconnectBuffer();
 523         disconnectBufferView();
 524         connectBufferView(wa->bufferView());
 525         connectBuffer(wa->bufferView().buffer());
 526         d.current_work_area_ = wa;
 527         QObject::connect(wa, SIGNAL(titleChanged(GuiWorkArea *)),
 528                 this, SLOT(updateWindowTitle(GuiWorkArea *)));
 529         updateWindowTitle(wa);
 530
 531         updateToc();
 532         // Buffer-dependent dialogs should be updated or
 533         // hidden. This should go here because some dialogs (eg ToC)
 534         // require bv_->text.
 535         dialogs_->updateBufferDependent(true);
 536         updateToolbars();
 537         updateLayoutChoice(false);
 538         updateStatusBar();
 539 }
 540
 541
 542 void GuiView::updateStatusBar()
 543 {
 544         // let the user see the explicit message
 545         if (statusbar_timer_.isActive())
 546                 return;
 547
 548         statusBar()->showMessage(toqstr(theLyXFunc().viewStatusMessage()));
 549 }
 550
 551
 552 bool GuiView::hasFocus() const
 553 {
 554         return qApp->activeWindow() == this;
 555 }
 556
 557
 558 bool GuiView::event(QEvent * e)
 559 {
 560         switch (e->type())
 561         {
 562         // Useful debug code:
 563         //case QEvent::ActivationChange:
 564         //case QEvent::WindowDeactivate:
 565         //case QEvent::Paint:
 566         //case QEvent::Enter:
 567         //case QEvent::Leave:
 568         //case QEvent::HoverEnter:
 569         //case QEvent::HoverLeave:
 570         //case QEvent::HoverMove:
 571         //case QEvent::StatusTip:
 572         //case QEvent::DragEnter:
 573         //case QEvent::DragLeave:
 574         //case QEvent::Drop:
 575         //      break;
 576
 577         case QEvent::WindowActivate: {
 578                 guiApp->setCurrentView(*this);
 579                 if (d.current_work_area_) {
 580                         BufferView & bv = d.current_work_area_->bufferView();
 581                         connectBufferView(bv);
 582                         connectBuffer(bv.buffer());
 583                         // The document structure, name and dialogs might have
 584                         // changed in another view.
 585                         dialogs_->updateBufferDependent(true);
 586                 } else {
 587                         setWindowTitle(qt_("LyX"));
 588                         setWindowIconText(qt_("LyX"));
 589                 }
 590                 return QMainWindow::event(e);
 591         }
 592         case QEvent::ShortcutOverride: {
 593                 QKeyEvent * ke = static_cast<QKeyEvent*>(e);
 594                 if (!d.current_work_area_) {
 595                         theLyXFunc().setLyXView(this);
 596                         KeySymbol sym;
 597                         setKeySymbol(&sym, ke);
 598                         theLyXFunc().processKeySym(sym, q_key_state(ke->modifiers()));
 599                         e->accept();
 600                         return true;
 601                 }
 602                 if (ke->key() == Qt::Key_Tab || ke->key() == Qt::Key_Backtab) {
 603                         KeySymbol sym;
 604                         setKeySymbol(&sym, ke);
 605                         d.current_work_area_->processKeySym(sym, NoModifier);
 606                         e->accept();
 607                         return true;
 608                 }
 609         }
 610         default:
 611                 return QMainWindow::event(e);
 612         }
 613 }
 614
 615
 616 bool GuiView::focusNextPrevChild(bool /*next*/)
 617 {
 618         setFocus();
 619         return true;
 620 }
 621
 622
 623 void GuiView::setBusy(bool yes)
 624 {
 625         if (d.current_work_area_) {
 626                 d.current_work_area_->setUpdatesEnabled(!yes);
 627                 if (yes)
 628                         d.current_work_area_->stopBlinkingCursor();
 629                 else
 630                         d.current_work_area_->startBlinkingCursor();
 631         }
 632
 633         if (yes)
 634                 QApplication::setOverrideCursor(Qt::WaitCursor);
 635         else
 636                 QApplication::restoreOverrideCursor();
 637 }
 638
 639
 640 GuiToolbar * GuiView::makeToolbar(ToolbarInfo const & tbinfo, bool newline)
 641 {
 642         GuiToolbar * toolBar = new GuiToolbar(tbinfo, *this);
 643
 644         if (tbinfo.flags & ToolbarInfo::TOP) {
 645                 if (newline)
 646                         addToolBarBreak(Qt::TopToolBarArea);
 647                 addToolBar(Qt::TopToolBarArea, toolBar);
 648         }
 649
 650         if (tbinfo.flags & ToolbarInfo::BOTTOM) {
 651 // Qt < 4.2.2 cannot handle ToolBarBreak on non-TOP dock.
 652 #if (QT_VERSION >= 0x040202)
 653                 if (newline)
 654                         addToolBarBreak(Qt::BottomToolBarArea);
 655 #endif
 656                 addToolBar(Qt::BottomToolBarArea, toolBar);
 657         }
 658
 659         if (tbinfo.flags & ToolbarInfo::LEFT) {
 660 // Qt < 4.2.2 cannot handle ToolBarBreak on non-TOP dock.
 661 #if (QT_VERSION >= 0x040202)
 662                 if (newline)
 663                         addToolBarBreak(Qt::LeftToolBarArea);
 664 #endif
 665                 addToolBar(Qt::LeftToolBarArea, toolBar);
 666         }
 667
 668         if (tbinfo.flags & ToolbarInfo::RIGHT) {
 669 // Qt < 4.2.2 cannot handle ToolBarBreak on non-TOP dock.
 670 #if (QT_VERSION >= 0x040202)
 671                 if (newline)
 672                         addToolBarBreak(Qt::RightToolBarArea);
 673 #endif
 674                 addToolBar(Qt::RightToolBarArea, toolBar);
 675         }
 676
 677         // The following does not work so I cannot restore to exact toolbar location
 678         /*
 679         ToolbarSection::ToolbarInfo & tbinfo = LyX::ref().session().toolbars().load(tbinfo.name);
 680         toolBar->move(tbinfo.posx, tbinfo.posy);
 681         */
 682
 683         return toolBar;
 684 }
 685
 686
 687 GuiWorkArea * GuiView::workArea(Buffer & buffer)
 688 {
 689         for (int i = 0; i != d.splitter_->count(); ++i) {
 690                 GuiWorkArea * wa = d.tabWorkArea(i)->workArea(buffer);
 691                 if (wa)
 692                         return wa;
 693         }
 694         return 0;
 695 }
 696
 697
 698 GuiWorkArea * GuiView::addWorkArea(Buffer & buffer)
 699 {
 700         GuiWorkArea * wa = new GuiWorkArea(buffer, *this);
 701         wa->setUpdatesEnabled(false);
 702
 703         // Automatically create a TabWorkArea if there are none yet.
 704         if (!d.splitter_->count())
 705                 addTabWorkArea();
 706
 707         TabWorkArea * tab_widget = d.currentTabWorkArea();
 708         tab_widget->addTab(wa, wa->windowTitle());
 709         QObject::connect(wa, SIGNAL(titleChanged(GuiWorkArea *)),
 710                 tab_widget, SLOT(updateTabText(GuiWorkArea *)));
 711
 712         wa->bufferView().updateMetrics();
 713
 714         // Hide tabbar if there's only one tab.
 715         tab_widget->showBar(tab_widget->count() > 1);
 716         return wa;
 717 }
 718
 719
 720 void GuiView::addTabWorkArea()
 721 {
 722         TabWorkArea * twa = new TabWorkArea;
 723         QObject::connect(twa, SIGNAL(currentWorkAreaChanged(GuiWorkArea *)),
 724                 this, SLOT(on_currentWorkAreaChanged(GuiWorkArea *)));
 725         d.splitter_->addWidget(twa);
 726         d.stack_widget_->setCurrentWidget(d.splitter_);
 727 }
 728
 729
 730 GuiWorkArea const * GuiView::currentWorkArea() const
 731 {
 732         return d.current_work_area_;
 733 }
 734
 735
 736 void GuiView::setCurrentWorkArea(GuiWorkArea * work_area)
 737 {
 738         BOOST_ASSERT(work_area);
 739
 740         // Changing work area can result from opening a file so
 741         // update the toc in any case.
 742         updateToc();
 743
 744         GuiWorkArea * wa = static_cast<GuiWorkArea *>(work_area);
 745         d.current_work_area_ = wa;
 746         for (int i = 0; i != d.splitter_->count(); ++i) {
 747                 if (d.tabWorkArea(i)->setCurrentWorkArea(wa))
 748                         return;
 749         }
 750 }
 751
 752
 753 void GuiView::removeWorkArea(GuiWorkArea * work_area)
 754 {
 755         BOOST_ASSERT(work_area);
 756         GuiWorkArea * gwa = static_cast<GuiWorkArea *>(work_area);
 757         if (gwa == d.current_work_area_) {
 758                 disconnectBuffer();
 759                 disconnectBufferView();
 760                 dialogs_->hideBufferDependent();
 761                 d.current_work_area_ = 0;
 762         }
 763
 764         // removing a work area often results from closing a file so
 765         // update the toc in any case.
 766         updateToc();
 767
 768         for (int i = 0; i != d.splitter_->count(); ++i) {
 769                 TabWorkArea * twa = d.tabWorkArea(i);
 770                 if (!twa->removeWorkArea(gwa))
 771                         // Not found in this tab group.
 772                         continue;
 773
 774                 // We found and removed the GuiWorkArea.
 775                 if (!twa->count()) {
 776                         // No more WorkAreas in this tab group, so delete it.
 777                         delete twa;
 778                         break;
 779                 }
 780
 781                 if (d.current_work_area_)
 782                         // This means that we are not closing the current GuiWorkArea;
 783                         break;
 784
 785                 // Switch to the next GuiWorkArea in the found TabWorkArea.
 786                 d.current_work_area_ = twa->currentWorkArea();
 787                 break;
 788         }
 789
 790         if (d.splitter_->count() == 0)
 791                 // No more work area, switch to the background widget.
 792                 d.setBackground();
 793 }
 794
 795
 796 void GuiView::updateLayoutChoice(bool force)
 797 {
 798         // Don't show any layouts without a buffer
 799         if (!buffer()) {
 800                 d.toolbars_->clearLayoutList();
 801                 return;
 802         }
 803
 804         // Update the layout display
 805         if (d.toolbars_->updateLayoutList(buffer()->params().getTextClassPtr(), force)) {
 806                 d.current_layout = buffer()->params().getTextClass().defaultLayoutName();
 807         }
 808
 809         docstring const & layout = d.current_work_area_->bufferView().cursor().
 810                 innerParagraph().layout()->name();
 811
 812         if (layout != d.current_layout) {
 813                 d.toolbars_->setLayout(layout);
 814                 d.current_layout = layout;
 815         }
 816 }
 817
 818
 819 bool GuiView::isToolbarVisible(std::string const & id)
 820 {
 821         return d.toolbars_->visible(id);
 822 }
 823
 824 void GuiView::updateToolbars()
 825 {
 826         if (d.current_work_area_) {
 827                 bool const math =
 828                         d.current_work_area_->bufferView().cursor().inMathed();
 829                 bool const table =
 830                         lyx::getStatus(FuncRequest(LFUN_LAYOUT_TABULAR)).enabled();
 831                 bool const review =
 832                         lyx::getStatus(FuncRequest(LFUN_CHANGES_TRACK)).enabled() &&
 833                         lyx::getStatus(FuncRequest(LFUN_CHANGES_TRACK)).onoff(true);
 834
 835                 d.toolbars_->update(math, table, review);
 836         } else
 837                 d.toolbars_->update(false, false, false);
 838
 839         // update read-only status of open dialogs.
 840         dialogs_->checkStatus();
 841 }
 842
 843
 844 Buffer * GuiView::buffer()
 845 {
 846         if (d.current_work_area_)
 847                 return &d.current_work_area_->bufferView().buffer();
 848         return 0;
 849 }
 850
 851
 852 Buffer const * GuiView::buffer() const
 853 {
 854         if (d.current_work_area_)
 855                 return &d.current_work_area_->bufferView().buffer();
 856         return 0;
 857 }
 858
 859
 860 void GuiView::setBuffer(Buffer * newBuffer)
 861 {
 862         BOOST_ASSERT(newBuffer);
 863         setBusy(true);
 864
 865         GuiWorkArea * wa = workArea(*newBuffer);
 866         if (wa == 0) {
 867                 updateLabels(*newBuffer->masterBuffer());
 868                 wa = addWorkArea(*newBuffer);
 869         } else {
 870                 //Disconnect the old buffer...there's no new one.
 871                 disconnectBuffer();
 872         }
 873         connectBuffer(*newBuffer);
 874         connectBufferView(wa->bufferView());
 875         setCurrentWorkArea(wa);
 876
 877         setBusy(false);
 878 }
 879
 880
 881 Buffer * GuiView::loadLyXFile(FileName const & filename, bool tolastfiles)
 882 {
 883         setBusy(true);
 884
 885         Buffer * newBuffer = checkAndLoadLyXFile(filename);
 886
 887         if (!newBuffer) {
 888                 message(_("Document not loaded."));
 889                 updateStatusBar();
 890                 setBusy(false);
 891                 return 0;
 892         }
 893
 894         GuiWorkArea * wa = workArea(*newBuffer);
 895         if (wa == 0)
 896                 wa = addWorkArea(*newBuffer);
 897
 898         // scroll to the position when the file was last closed
 899         if (lyxrc.use_lastfilepos) {
 900                 LastFilePosSection::FilePos filepos =
 901                         LyX::ref().session().lastFilePos().load(filename);
 902                 // if successfully move to pit (returned par_id is not zero),
 903                 // update metrics and reset font
 904                 wa->bufferView().moveToPosition(filepos.pit, filepos.pos, 0, 0);
 905         }
 906
 907         if (tolastfiles)
 908                 LyX::ref().session().lastFiles().add(filename);
 909
 910         setBusy(false);
 911         return newBuffer;
 912 }
 913
 914
 915 void GuiView::connectBuffer(Buffer & buf)
 916 {
 917         buf.setGuiDelegate(this);
 918 }
 919
 920
 921 void GuiView::disconnectBuffer()
 922 {
 923         if (d.current_work_area_)
 924                 d.current_work_area_->bufferView().setGuiDelegate(0);
 925 }
 926
 927
 928 void GuiView::connectBufferView(BufferView & bv)
 929 {
 930         bv.setGuiDelegate(this);
 931 }
 932
 933
 934 void GuiView::disconnectBufferView()
 935 {
 936         if (d.current_work_area_)
 937                 d.current_work_area_->bufferView().setGuiDelegate(0);
 938 }
 939
 940
 941 void GuiView::errors(string const & error_type)
 942 {
 943         ErrorList & el = buffer()->errorList(error_type);
 944         if (!el.empty())
 945                 dialogs_->show("errorlist", error_type);
 946 }
 947
 948
 949 void GuiView::showDialog(string const & name)
 950 {
 951         dialogs_->show(name);
 952 }
 953
 954
 955 void GuiView::showDialogWithData(string const & name, string const & data)
 956 {
 957         dialogs_->show(name, data);
 958 }
 959
 960
 961 void GuiView::showInsetDialog(string const & name, string const & data,
 962                 Inset * inset)
 963 {
 964         dialogs_->show(name, data, inset);
 965 }
 966
 967
 968 void GuiView::updateDialog(string const & name, string const & data)
 969 {
 970         if (dialogs_->visible(name))
 971                 dialogs_->update(name, data);
 972 }
 973
 974
 975 BufferView * GuiView::view()
 976 {
 977         return d.current_work_area_ ? &d.current_work_area_->bufferView() : 0;
 978 }
 979
 980
 981 void GuiView::updateToc()
 982 {
 983         updateDialog("toc", "");
 984 }
 985
 986
 987 void GuiView::updateEmbeddedFiles()
 988 {
 989         updateDialog("embedding", "");
 990 }
 991
 992
 993 void GuiView::autoSave()
 994 {
 995         LYXERR(Debug::INFO, "Running autoSave()");
 996
 997         if (buffer())
 998                 view()->buffer().autoSave();
 999 }
1000
1001
1002 void GuiView::resetAutosaveTimers()
1003 {
1004         if (lyxrc.autosave)
1005                 autosave_timeout_->restart();
1006 }
1007
1008
1009 void GuiView::dispatch(FuncRequest const & cmd)
1010 {
1011         switch(cmd.action) {
1012                 case LFUN_BUFFER_SWITCH:
1013                         setBuffer(theBufferList().getBuffer(to_utf8(cmd.argument())));
1014                         break;
1015
1016                 case LFUN_COMMAND_EXECUTE: {
1017                         bool const show_it = cmd.argument() != "off";
1018                         d.toolbars_->showCommandBuffer(show_it);
1019                         break;
1020                 }
1021                 case LFUN_DROP_LAYOUTS_CHOICE:
1022                         d.toolbars_->openLayoutList();
1023                         break;
1024
1025                 case LFUN_MENU_OPEN:
1026                         d.menubar_->openByName(toqstr(cmd.argument()));
1027                         break;
1028
1029                 case LFUN_TOOLBAR_TOGGLE: {
1030                         string const name = cmd.getArg(0);
1031                         bool const allowauto = cmd.getArg(1) == "allowauto";
1032                         // it is possible to get current toolbar status like this,...
1033                         // but I decide to obey the order of ToolbarBackend::flags
1034                         // and disregard real toolbar status.
1035                         // toolbars_->saveToolbarInfo();
1036                         //
1037                         // toggle state on/off/auto
1038                         d.toolbars_->toggleToolbarState(name, allowauto);
1039                         // update toolbar
1040                         updateToolbars();
1041
1042                         ToolbarInfo * tbi = d.toolbars_->getToolbarInfo(name);
1043                         if (!tbi) {
1044                                 message(bformat(_("Unknown toolbar \"%1$s\""), from_utf8(name)));
1045                                 break;
1046                         }
1047                         docstring state;
1048                         if (tbi->flags & ToolbarInfo::ON)
1049                                 state = _("on");
1050                         else if (tbi->flags & ToolbarInfo::OFF)
1051                                 state = _("off");
1052                         else if (tbi->flags & ToolbarInfo::AUTO)
1053                                 state = _("auto");
1054
1055                         message(bformat(_("Toolbar \"%1$s\" state set to %2$s"),
1056                                            _(tbi->gui_name), state));
1057                         break;
1058                 }
1059
1060                 default:
1061                         theLyXFunc().setLyXView(this);
1062                         lyx::dispatch(cmd);
1063         }
1064 }
1065
1066
1067 Buffer const * GuiView::updateInset(Inset const * inset)
1068 {
1069         if (!d.current_work_area_)
1070                 return 0;
1071
1072         if (inset)
1073                 d.current_work_area_->scheduleRedraw();
1074
1075         return &d.current_work_area_->bufferView().buffer();
1076 }
1077
1078
1079 void GuiView::restartCursor()
1080 {
1081         /* When we move around, or type, it's nice to be able to see
1082          * the cursor immediately after the keypress.
1083          */
1084         if (d.current_work_area_)
1085                 d.current_work_area_->startBlinkingCursor();
1086 }
1087
1088 } // namespace frontend
1089 } // namespace lyx
1090
1091 #include "GuiView_moc.cpp"