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