src/BufferView_pimpl.C

   1 /**
   2  * \file BufferView_pimpl.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Asger Alstrup
   7  * \author Alfredo Braunstein
   8  * \author Lars Gullik Bjønnes
   9  * \author Jean-Marc Lasgouttes
  10  * \author Angus Leeming
  11  * \author John Levon
  12  * \author André Pönitz
  13  * \author Dekel Tsur
  14  * \author Jürgen Vigna
  15  *
  16  * Full author contact details are available in file CREDITS.
  17  */
  18
  19 #include <config.h>
  20
  21 #include "BufferView_pimpl.h"
  22 #include "buffer.h"
  23 #include "buffer_funcs.h"
  24 #include "bufferlist.h"
  25 #include "bufferparams.h"
  26 #include "cursor.h"
  27 #include "debug.h"
  28 #include "dispatchresult.h"
  29 #include "factory.h"
  30 #include "FloatList.h"
  31 #include "funcrequest.h"
  32 #include "gettext.h"
  33 #include "intl.h"
  34 #include "iterators.h"
  35 #include "lyx_cb.h" // added for Dispatch functions
  36 #include "lyx_main.h"
  37 #include "lyxfind.h"
  38 #include "lyxfunc.h"
  39 #include "lyxtext.h"
  40 #include "lyxrc.h"
  41 #include "lastfiles.h"
  42 #include "paragraph.h"
  43 #include "paragraph_funcs.h"
  44 #include "ParagraphParameters.h"
  45 #include "undo.h"
  46 #include "vspace.h"
  47
  48 #include "insets/insetref.h"
  49
  50 #include "frontends/Alert.h"
  51 #include "frontends/Dialogs.h"
  52 #include "frontends/FileDialog.h"
  53 #include "frontends/LyXView.h"
  54 #include "frontends/LyXScreenFactory.h"
  55 #include "frontends/screen.h"
  56 #include "frontends/WorkArea.h"
  57 #include "frontends/WorkAreaFactory.h"
  58
  59 #include "graphics/Previews.h"
  60
  61 #include "support/filetools.h"
  62 #include "support/globbing.h"
  63 #include "support/path_defines.h"
  64 #include "support/tostr.h"
  65
  66 #include <boost/bind.hpp>
  67
  68 using lyx::pos_type;
  69
  70 using lyx::support::AddPath;
  71 using lyx::support::bformat;
  72 using lyx::support::FileFilterList;
  73 using lyx::support::FileSearch;
  74 using lyx::support::IsDirWriteable;
  75 using lyx::support::MakeDisplayPath;
  76 using lyx::support::strToUnsignedInt;
  77 using lyx::support::system_lyxdir;
  78
  79 using std::endl;
  80 using std::istringstream;
  81 using std::make_pair;
  82 using std::min;
  83 using std::string;
  84
  85
  86 extern BufferList bufferlist;
  87
  88
  89 namespace {
  90
  91 unsigned int const saved_positions_num = 20;
  92
  93 // All the below connection objects are needed because of a bug in some
  94 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
  95 // to these connections we avoid a segfault upon startup, and also at exit.
  96 // (Lgb)
  97
  98 boost::signals::connection dispatchcon;
  99 boost::signals::connection timecon;
 100 boost::signals::connection doccon;
 101 boost::signals::connection resizecon;
 102 boost::signals::connection kpresscon;
 103 boost::signals::connection selectioncon;
 104 boost::signals::connection lostcon;
 105
 106
 107 } // anon namespace
 108
 109
 110 BufferView::Pimpl::Pimpl(BufferView & bv, LyXView * owner,
 111              int xpos, int ypos, int width, int height)
 112         : bv_(&bv), owner_(owner), buffer_(0), cursor_timeout(400),
 113           using_xterm_cursor(false), cursor_(bv)
 114 {
 115         xsel_cache_.set = false;
 116
 117         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 118         screen_.reset(LyXScreenFactory::create(workarea()));
 119
 120         // Setup the signals
 121         doccon = workarea().scrollDocView
 122                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 123         resizecon = workarea().workAreaResize
 124                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 125         dispatchcon = workarea().dispatch
 126                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 127         kpresscon = workarea().workAreaKeyPress
 128                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 129         selectioncon = workarea().selectionRequested
 130                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 131         lostcon = workarea().selectionLost
 132                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 133
 134         timecon = cursor_timeout.timeout
 135                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 136         cursor_timeout.start();
 137         saved_positions.resize(saved_positions_num);
 138 }
 139
 140
 141 void BufferView::Pimpl::addError(ErrorItem const & ei)
 142 {
 143         errorlist_.push_back(ei);
 144 }
 145
 146
 147 void BufferView::Pimpl::showReadonly(bool)
 148 {
 149         owner_->updateWindowTitle();
 150         owner_->getDialogs().updateBufferDependent(false);
 151 }
 152
 153
 154 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 155 {
 156         if (errorConnection_.connected())
 157                 disconnectBuffer();
 158
 159         errorConnection_ =
 160                 buf.error.connect(boost::bind(&BufferView::Pimpl::addError, this, _1));
 161         messageConnection_ =
 162                 buf.message.connect(boost::bind(&LyXView::message, owner_, _1));
 163         busyConnection_ =
 164                 buf.busy.connect(boost::bind(&LyXView::busy, owner_, _1));
 165         titleConnection_ =
 166                 buf.updateTitles.connect(boost::bind(&LyXView::updateWindowTitle, owner_));
 167         timerConnection_ =
 168                 buf.resetAutosaveTimers.connect(boost::bind(&LyXView::resetAutosaveTimer, owner_));
 169         readonlyConnection_ =
 170                 buf.readonly.connect(boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 171         closingConnection_ =
 172                 buf.closing.connect(boost::bind(&BufferView::Pimpl::buffer, this, (Buffer *)0));
 173 }
 174
 175
 176 void BufferView::Pimpl::disconnectBuffer()
 177 {
 178         errorConnection_.disconnect();
 179         messageConnection_.disconnect();
 180         busyConnection_.disconnect();
 181         titleConnection_.disconnect();
 182         timerConnection_.disconnect();
 183         readonlyConnection_.disconnect();
 184         closingConnection_.disconnect();
 185 }
 186
 187
 188 bool BufferView::Pimpl::newFile(string const & filename,
 189                                 string const & tname,
 190                                 bool isNamed)
 191 {
 192         Buffer * b = ::newFile(filename, tname, isNamed);
 193         buffer(b);
 194         return true;
 195 }
 196
 197
 198 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 199 {
 200         // get absolute path of file and add ".lyx" to the filename if
 201         // necessary
 202         string s = FileSearch(string(), filename, "lyx");
 203
 204         bool const found = !s.empty();
 205
 206         if (!found)
 207                 s = filename;
 208
 209         // file already open?
 210         if (bufferlist.exists(s)) {
 211                 string const file = MakeDisplayPath(s, 20);
 212                 string text = bformat(_("The document %1$s is already "
 213                                         "loaded.\n\nDo you want to revert "
 214                                         "to the saved version?"), file);
 215                 int const ret = Alert::prompt(_("Revert to saved document?"),
 216                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 217
 218                 if (ret != 0) {
 219                         buffer(bufferlist.getBuffer(s));
 220                         return true;
 221                 } else {
 222                         // FIXME: should be LFUN_REVERT
 223                         if (!bufferlist.close(bufferlist.getBuffer(s), false))
 224                                 return false;
 225                         // Fall through to new load. (Asger)
 226                 }
 227         }
 228
 229         Buffer * b;
 230
 231         if (found) {
 232                 b = bufferlist.newBuffer(s);
 233                 connectBuffer(*b);
 234                 if (!::loadLyXFile(b, s)) {
 235                         bufferlist.release(b);
 236                         return false;
 237                 }
 238         } else {
 239                 string text = bformat(_("The document %1$s does not yet "
 240                                         "exist.\n\nDo you want to create "
 241                                         "a new document?"), s);
 242                 int const ret = Alert::prompt(_("Create new document?"),
 243                          text, 0, 1, _("&Create"), _("Cancel"));
 244
 245                 if (ret == 0)
 246                         b = ::newFile(s, string(), true);
 247                 else
 248                         return false;
 249         }
 250
 251         buffer(b);
 252         bv_->showErrorList(_("Parse"));
 253
 254         if (tolastfiles)
 255                 LyX::ref().lastfiles().newFile(b->fileName());
 256
 257         return true;
 258 }
 259
 260
 261 WorkArea & BufferView::Pimpl::workarea() const
 262 {
 263         return *workarea_.get();
 264 }
 265
 266
 267 LyXScreen & BufferView::Pimpl::screen() const
 268 {
 269         return *screen_.get();
 270 }
 271
 272
 273 Painter & BufferView::Pimpl::painter() const
 274 {
 275         return workarea().getPainter();
 276 }
 277
 278
 279 void BufferView::Pimpl::top_y(int y)
 280 {
 281         top_y_ = y;
 282 }
 283
 284
 285 int BufferView::Pimpl::top_y() const
 286 {
 287         return top_y_;
 288 }
 289
 290
 291 void BufferView::Pimpl::buffer(Buffer * b)
 292 {
 293         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 294                             << b << ')' << endl;
 295         if (buffer_) {
 296                 disconnectBuffer();
 297                 //delete bv_->text();
 298                 //bv_->setText(0);
 299         }
 300
 301         // reset old cursor
 302         cursor_.reset();
 303
 304         // set current buffer
 305         buffer_ = b;
 306
 307         top_y_ = 0;
 308
 309         // if we're quitting lyx, don't bother updating stuff
 310         if (quitting)
 311                 return;
 312
 313         // if we are closing the buffer, use the first buffer as current
 314         if (!buffer_)
 315                 buffer_ = bufferlist.first();
 316
 317         if (buffer_) {
 318                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 319                 connectBuffer(*buffer_);
 320
 321                 buffer_->text().init(bv_);
 322
 323                 // If we don't have a text object for this, we make one
 324                 if (bv_->text() == 0)
 325                         resizeCurrentBuffer();
 326
 327                 // Buffer-dependent dialogs should be updated or
 328                 // hidden. This should go here because some dialogs (eg ToC)
 329                 // require bv_->text.
 330                 owner_->getDialogs().updateBufferDependent(true);
 331         } else {
 332                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 333                 owner_->getDialogs().hideBufferDependent();
 334         }
 335
 336         update();
 337         updateScrollbar();
 338         owner_->updateMenubar();
 339         owner_->updateToolbar();
 340         owner_->updateLayoutChoice();
 341         owner_->updateWindowTitle();
 342
 343         // Don't forget to update the Layout
 344         if (buffer_)
 345                 owner_->setLayout(bv_->text()->getPar(0)->layout()->name());
 346
 347         if (lyx::graphics::Previews::activated() && buffer_)
 348                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 349 }
 350
 351
 352 bool BufferView::Pimpl::fitCursor()
 353 {
 354         if (screen().fitCursor(bv_)) {
 355                 updateScrollbar();
 356                 return true;
 357         }
 358         return false;
 359 }
 360
 361
 362 void BufferView::Pimpl::redoCurrentBuffer()
 363 {
 364         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 365         if (buffer_ && bv_->text()) {
 366                 resizeCurrentBuffer();
 367                 updateScrollbar();
 368                 owner_->updateLayoutChoice();
 369         }
 370 }
 371
 372
 373 void BufferView::Pimpl::resizeCurrentBuffer()
 374 {
 375         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 376
 377         owner_->busy(true);
 378
 379         owner_->message(_("Formatting document..."));
 380
 381         LyXText * text = bv_->text();
 382         lyxerr << "### resizeCurrentBuffer: text " << text << endl;
 383         if (!text)
 384                 return;
 385
 386         // save the cursor mangled in init
 387         LCursor cur = bv_->cursor();
 388         text->init(bv_);
 389         update();
 390         bv_->cursor() = cur;
 391         bv_->cursor().updatePos();
 392         fitCursor();
 393
 394         switchKeyMap();
 395         owner_->busy(false);
 396
 397         // reset the "Formatting..." message
 398         owner_->clearMessage();
 399
 400         updateScrollbar();
 401 }
 402
 403
 404 void BufferView::Pimpl::updateScrollbar()
 405 {
 406         if (!bv_->text()) {
 407                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 408                 workarea().setScrollbarParams(0, 0, 0);
 409                 return;
 410         }
 411
 412         LyXText const & t = *bv_->text();
 413
 414         lyxerr[Debug::GUI] << "Updating scrollbar: h" << t.height()
 415                            << ", top_y()" << top_y() << ", default height "
 416                            << defaultRowHeight() << endl;
 417
 418         workarea().setScrollbarParams(t.height(), top_y(), defaultRowHeight());
 419 }
 420
 421
 422 void BufferView::Pimpl::scrollDocView(int value)
 423 {
 424         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 425
 426         if (!buffer_)
 427                 return;
 428
 429         screen().hideCursor();
 430
 431         top_y(value);
 432         screen().redraw(*bv_);
 433
 434         if (!lyxrc.cursor_follows_scrollbar)
 435                 return;
 436
 437         int const height = defaultRowHeight();
 438         int const first = top_y() + height;
 439         int const last = top_y() + workarea().workHeight() - height;
 440
 441         bv_->cursor().reset();
 442         LyXText * text = bv_->text();
 443         CursorSlice & cur = bv_->cursor().front();
 444         int y = text->cursorY(cur);
 445         if (y < first)
 446                 text->setCursorFromCoordinates(bv_->cursor(), 0, first);
 447         else if (y > last)
 448                 text->setCursorFromCoordinates(bv_->cursor(), 0, last);
 449
 450         owner_->updateLayoutChoice();
 451 }
 452
 453
 454 void BufferView::Pimpl::scroll(int lines)
 455 {
 456         if (!buffer_)
 457                 return;
 458
 459         LyXText const * t = bv_->text();
 460         int const line_height = defaultRowHeight();
 461
 462         // The new absolute coordinate
 463         int new_top_y = top_y() + lines * line_height;
 464
 465         // Restrict to a valid value
 466         new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
 467         new_top_y = std::max(0, new_top_y);
 468
 469         scrollDocView(new_top_y);
 470
 471         // Update the scrollbar.
 472         workarea().setScrollbarParams(t->height(), top_y(), defaultRowHeight());
 473 }
 474
 475
 476 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 477                                          key_modifier::state state)
 478 {
 479         bv_->owner()->getLyXFunc().processKeySym(key, state);
 480
 481         /* This is perhaps a bit of a hack. When we move
 482          * around, or type, it's nice to be able to see
 483          * the cursor immediately after the keypress. So
 484          * we reset the toggle timeout and force the visibility
 485          * of the cursor. Note we cannot do this inside
 486          * dispatch() itself, because that's called recursively.
 487          */
 488         if (available()) {
 489                 cursor_timeout.restart();
 490                 screen().showCursor(*bv_);
 491         }
 492 }
 493
 494
 495 void BufferView::Pimpl::selectionRequested()
 496 {
 497         static string sel;
 498
 499         if (!available())
 500                 return;
 501
 502         LCursor & cur = bv_->cursor();
 503
 504         if (!cur.selection()) {
 505                 xsel_cache_.set = false;
 506                 return;
 507         }
 508
 509         if (!xsel_cache_.set ||
 510             cur.back() != xsel_cache_.cursor ||
 511             cur.anchor_.back() != xsel_cache_.anchor)
 512         {
 513                 xsel_cache_.cursor = cur.back();
 514                 xsel_cache_.anchor = cur.anchor_.back();
 515                 xsel_cache_.set = cur.selection();
 516                 sel = cur.selectionAsString(false);
 517                 if (!sel.empty())
 518                         workarea().putClipboard(sel);
 519         }
 520 }
 521
 522
 523 void BufferView::Pimpl::selectionLost()
 524 {
 525         if (available()) {
 526                 screen().hideCursor();
 527                 bv_->cursor().clearSelection();
 528                 xsel_cache_.set = false;
 529         }
 530 }
 531
 532
 533 void BufferView::Pimpl::workAreaResize()
 534 {
 535         static int work_area_width;
 536         static int work_area_height;
 537
 538         bool const widthChange = workarea().workWidth() != work_area_width;
 539         bool const heightChange = workarea().workHeight() != work_area_height;
 540
 541         // update from work area
 542         work_area_width = workarea().workWidth();
 543         work_area_height = workarea().workHeight();
 544
 545         if (buffer_ && widthChange) {
 546                 // The visible LyXView need a resize
 547                 resizeCurrentBuffer();
 548         }
 549
 550         if (widthChange || heightChange)
 551                 update();
 552
 553         // always make sure that the scrollbar is sane.
 554         updateScrollbar();
 555         owner_->updateLayoutChoice();
 556 }
 557
 558
 559 void BufferView::Pimpl::update()
 560 {
 561         //lyxerr << "BufferView::update()" << endl;
 562         // fix cursor coordinate cache in case something went wrong
 563
 564         // check needed to survive LyX startup
 565         if (bv_->getLyXText()) {
 566                 // update all 'visible' paragraphs
 567                 ParagraphList::iterator beg;
 568                 ParagraphList::iterator end;
 569                 getParsInRange(buffer_->paragraphs(),
 570                                top_y(), top_y() + workarea().workHeight(),
 571                                beg, end);
 572                 bv_->text()->redoParagraphs(beg, end);
 573                 updateScrollbar();
 574         }
 575         screen().redraw(*bv_);
 576         bv_->owner()->view_state_changed();
 577 }
 578
 579
 580 // Callback for cursor timer
 581 void BufferView::Pimpl::cursorToggle()
 582 {
 583         if (buffer_)
 584                 screen().toggleCursor(*bv_);
 585         cursor_timeout.restart();
 586 }
 587
 588
 589 bool BufferView::Pimpl::available() const
 590 {
 591         return buffer_ && bv_->text();
 592 }
 593
 594
 595 Change const BufferView::Pimpl::getCurrentChange()
 596 {
 597         if (!bv_->buffer()->params().tracking_changes)
 598                 return Change(Change::UNCHANGED);
 599
 600         LyXText * text = bv_->getLyXText();
 601         LCursor & cur = bv_->cursor();
 602
 603         if (!cur.selection())
 604                 return Change(Change::UNCHANGED);
 605
 606         return text->getPar(cur.selBegin())
 607                 ->lookupChangeFull(cur.selBegin().pos());
 608 }
 609
 610
 611 void BufferView::Pimpl::savePosition(unsigned int i)
 612 {
 613         if (i >= saved_positions_num)
 614                 return;
 615         saved_positions[i] = Position(buffer_->fileName(),
 616                                       bv_->text()->cursorPar()->id(),
 617                                       bv_->text()->cursor().pos());
 618         if (i > 0)
 619                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 620 }
 621
 622
 623 void BufferView::Pimpl::restorePosition(unsigned int i)
 624 {
 625         if (i >= saved_positions_num)
 626                 return;
 627
 628         string const fname = saved_positions[i].filename;
 629
 630         bv_->cursor().clearSelection();
 631
 632         if (fname != buffer_->fileName()) {
 633                 Buffer * b = 0;
 634                 if (bufferlist.exists(fname))
 635                         b = bufferlist.getBuffer(fname);
 636                 else {
 637                         b = bufferlist.newBuffer(fname);
 638                         ::loadLyXFile(b, fname); // don't ask, just load it
 639                 }
 640                 if (b)
 641                         buffer(b);
 642         }
 643
 644         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 645         if (par == buffer_->par_iterator_end())
 646                 return;
 647
 648         bv_->text()->setCursor(
 649                 bv_->cursor(),
 650                 bv_->text()->parOffset(par.pit()),
 651                 min(par->size(), saved_positions[i].par_pos));
 652
 653         if (i > 0)
 654                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 655 }
 656
 657
 658 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 659 {
 660         return i < saved_positions_num && !saved_positions[i].filename.empty();
 661 }
 662
 663
 664 void BufferView::Pimpl::switchKeyMap()
 665 {
 666         if (!lyxrc.rtl_support)
 667                 return;
 668
 669         Intl & intl = owner_->getIntl();
 670         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 671                 if (intl.keymap == Intl::PRIMARY)
 672                         intl.KeyMapSec();
 673         } else {
 674                 if (intl.keymap == Intl::SECONDARY)
 675                         intl.KeyMapPrim();
 676         }
 677 }
 678
 679
 680 void BufferView::Pimpl::center()
 681 {
 682         LyXText * text = bv_->text();
 683
 684         bv_->cursor().clearSelection();
 685         int const half_height = workarea().workHeight() / 2;
 686         int new_y = text->cursorY(bv_->cursor().front()) - half_height;
 687         if (new_y < 0)
 688                 new_y = 0;
 689
 690         // FIXME: look at this comment again ...
 691         // This updates top_y() but means the fitCursor() call
 692         // from the update(FITCUR) doesn't realise that we might
 693         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 694         // the scrollbar to be updated as it should, so we have
 695         // to do it manually. Any operation that does a center()
 696         // and also might have moved top_y() must make sure to call
 697         // updateScrollbar() currently. Never mind that this is a
 698         // pretty obfuscated way of updating text->top_y()
 699         top_y(new_y);
 700 }
 701
 702
 703 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 704 {
 705         workarea().putClipboard(stuff);
 706 }
 707
 708
 709 InsetBase * BufferView::Pimpl::getInsetByCode(InsetBase::Code code)
 710 {
 711 #warning Does not work for mathed
 712         // Ok, this is a little bit too brute force but it
 713         // should work for now. Better infrastructure is coming. (Lgb)
 714
 715         Buffer * buf = bv_->buffer();
 716         Buffer::inset_iterator beg = buf->inset_iterator_begin();
 717         Buffer::inset_iterator end = buf->inset_iterator_end();
 718
 719         bool cursor_par_seen = false;
 720
 721         LCursor & cur = bv_->cursor();
 722         ParagraphList::iterator pit =  bv_->getLyXText()->getPar(cur.par());
 723
 724         for (; beg != end; ++beg) {
 725                 if (beg.getPar() == pit)
 726                         cursor_par_seen = true;
 727                 if (cursor_par_seen) {
 728                         if (beg.getPar() == pit && beg.getPos() >= cur.pos())
 729                                 break;
 730                         if (beg.getPar() != pit)
 731                                 break;
 732                 }
 733         }
 734         if (beg != end) {
 735                 // Now find the first inset that matches code.
 736                 for (; beg != end; ++beg) {
 737                         if (beg->lyxCode() == code)
 738                                 return &(*beg);
 739                 }
 740         }
 741         return 0;
 742 }
 743
 744
 745 void BufferView::Pimpl::MenuInsertLyXFile(string const & filenm)
 746 {
 747         string filename = filenm;
 748
 749         if (filename.empty()) {
 750                 // Launch a file browser
 751                 string initpath = lyxrc.document_path;
 752
 753                 if (available()) {
 754                         string const trypath = owner_->buffer()->filePath();
 755                         // If directory is writeable, use this as default.
 756                         if (IsDirWriteable(trypath))
 757                                 initpath = trypath;
 758                 }
 759
 760                 FileDialog fileDlg(_("Select LyX document to insert"),
 761                         LFUN_FILE_INSERT,
 762                         make_pair(string(_("Documents|#o#O")),
 763                                   string(lyxrc.document_path)),
 764                         make_pair(string(_("Examples|#E#e")),
 765                                   string(AddPath(system_lyxdir(), "examples"))));
 766
 767                 FileDialog::Result result =
 768                         fileDlg.open(initpath,
 769                                      FileFilterList(_("LyX Documents (*.lyx)")),
 770                                      string());
 771
 772                 if (result.first == FileDialog::Later)
 773                         return;
 774
 775                 filename = result.second;
 776
 777                 // check selected filename
 778                 if (filename.empty()) {
 779                         owner_->message(_("Canceled."));
 780                         return;
 781                 }
 782         }
 783
 784         // get absolute path of file and add ".lyx" to the filename if
 785         // necessary
 786         filename = FileSearch(string(), filename, "lyx");
 787
 788         string const disp_fn = MakeDisplayPath(filename);
 789         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 790         if (bv_->insertLyXFile(filename))
 791                 owner_->message(bformat(_("Document %1$s inserted."),
 792                                         disp_fn));
 793         else
 794                 owner_->message(bformat(_("Could not insert document %1$s"),
 795                                         disp_fn));
 796 }
 797
 798
 799 void BufferView::Pimpl::trackChanges()
 800 {
 801         Buffer * buf = bv_->buffer();
 802         bool const tracking = buf->params().tracking_changes;
 803
 804         if (!tracking) {
 805                 ParIterator const end = buf->par_iterator_end();
 806                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 807                         it->trackChanges();
 808                 buf->params().tracking_changes = true;
 809
 810                 // we cannot allow undos beyond the freeze point
 811                 buf->undostack().clear();
 812         } else {
 813                 update();
 814                 bv_->text()->setCursor(bv_->cursor(), 0, 0);
 815 #warning changes FIXME
 816                 bool found = lyx::find::findNextChange(bv_);
 817                 if (found) {
 818                         owner_->getDialogs().show("changes");
 819                         return;
 820                 }
 821
 822                 ParIterator const end = buf->par_iterator_end();
 823                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 824                         it->untrackChanges();
 825                 buf->params().tracking_changes = false;
 826         }
 827
 828         buf->redostack().clear();
 829 }
 830
 831
 832 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd0)
 833 {
 834         //
 835         // this is only called for mouse related events (including
 836         // LFUN_FILE_OPEN generated by drag-and-drop)
 837         //
 838         FuncRequest cmd = cmd0;
 839         cmd.y += bv_->top_y();
 840         //lyxerr << "*** workAreaDispatch: request: " << cmd << std::endl;
 841         LCursor cur(*bv_);
 842         cur.selection() = bv_->cursor().selection();
 843         switch (cmd.action) {
 844
 845 #if 0
 846         case LFUN_MOUSE_MOTION: {
 847                 if (!available())
 848                         return false;
 849                 FuncRequest cmd1 = cmd;
 850                 InsetBase * inset = cur.inset();
 851                 DispatchResult res;
 852                 if (inset) {
 853                         res = inset->dispatch(cur, cmd);
 854                 } else {
 855                         res = bv_->text()->dispatch(cur, cmd);
 856                 }
 857
 858                 if (fitCursor() || res.update()) {
 859                         update();
 860                         cur.updatePos();
 861                 }
 862                 return true;
 863         }
 864 #else
 865         case LFUN_MOUSE_MOTION:
 866 #endif
 867
 868         case LFUN_MOUSE_PRESS:
 869         case LFUN_MOUSE_RELEASE:
 870         case LFUN_MOUSE_DOUBLE:
 871         case LFUN_MOUSE_TRIPLE: {
 872                 // We pass those directly to the Bufferview, since
 873                 // otherwise selection handling breaks down
 874
 875                 // Doesn't go through lyxfunc, so we need to update
 876                 // the layout choice etc. ourselves
 877
 878                 // e.g. Qt mouse press when no buffer
 879                 if (!available())
 880                         return false;
 881
 882                 screen().hideCursor();
 883
 884                 // either the inset under the cursor or the
 885                 // surrounding LyXText will handle this event.
 886
 887                 // built temporary path to inset
 888                 InsetBase * inset = bv_->text()->editXY(cur, cmd.x, cmd.y);
 889                 lyxerr << "hit inset at tip: " << inset << endl;
 890                 lyxerr << "created temp cursor:\n" << cur << endl;
 891
 892                 // Try to dispatch to an non-editable inset near this position
 893                 DispatchResult res;
 894                 if (inset)
 895                         inset->dispatch(cur, cmd);
 896
 897                 // Dispatch to the temp cursor.
 898                 // An inset (or LyXText) can assign this to bv->cursor()
 899                 // if it wishes to do so.
 900                 if (!res.dispatched())
 901                         res = cur.dispatch(cmd);
 902
 903                 if (fitCursor() || res.update())
 904                         update();
 905
 906                 // see workAreaKeyPress
 907                 cursor_timeout.restart();
 908                 screen().showCursor(*bv_);
 909
 910                 // skip these when selecting
 911                 if (cmd.action != LFUN_MOUSE_MOTION) {
 912                         owner_->updateLayoutChoice();
 913                         owner_->updateToolbar();
 914                 }
 915
 916                 // slight hack: this is only called currently when we
 917                 // clicked somewhere, so we force through the display
 918                 // of the new status here.
 919                 owner_->clearMessage();
 920                 return true;
 921         }
 922
 923         case LFUN_FILE_OPEN:
 924                 owner_->dispatch(cmd);
 925                 return true;
 926
 927         default:
 928                 BOOST_ASSERT(false);
 929         }
 930         return true;
 931 }
 932
 933
 934 bool BufferView::Pimpl::dispatch(FuncRequest const & cmd)
 935 {
 936         //lyxerr << "*** BufferView::Pimpl: request: " << cmd << std::endl;
 937         // Make sure that the cached BufferView is correct.
 938         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
 939                 << " action[" << cmd.action << ']'
 940                 << " arg[" << cmd.argument << ']'
 941                 << " x[" << cmd.x << ']'
 942                 << " y[" << cmd.y << ']'
 943                 << " button[" << cmd.button() << ']'
 944                 << endl;
 945
 946         LCursor & cur = bv_->cursor();
 947
 948         switch (cmd.action) {
 949
 950         case LFUN_UNDO:
 951                 if (available()) {
 952                         cur.message(_("Undo"));
 953                         cur.clearSelection();
 954                         if (!textUndo(*bv_))
 955                                 cur.message(_("No further undo information"));
 956                         update();
 957                         switchKeyMap();
 958                 }
 959                 break;
 960
 961         case LFUN_REDO:
 962                 if (available()) {
 963                         cur.message(_("Redo"));
 964                         cur.clearSelection();
 965                         if (!textRedo(*bv_))
 966                                 cur.message(_("No further redo information"));
 967                         update();
 968                         switchKeyMap();
 969                 }
 970                 break;
 971
 972         case LFUN_FILE_INSERT:
 973                 MenuInsertLyXFile(cmd.argument);
 974                 break;
 975
 976         case LFUN_FILE_INSERT_ASCII_PARA:
 977                 InsertAsciiFile(bv_, cmd.argument, true);
 978                 break;
 979
 980         case LFUN_FILE_INSERT_ASCII:
 981                 InsertAsciiFile(bv_, cmd.argument, false);
 982                 break;
 983
 984         case LFUN_FONT_STATE:
 985                 cur.message(cur.currentState());
 986                 break;
 987
 988         case LFUN_INSERT_LABEL: {
 989                 // Try and generate a valid label
 990                 string const contents = cmd.argument.empty() ?
 991                         cur.getPossibleLabel() : cmd.argument;
 992                 InsetCommandParams icp("label", contents);
 993                 string data = InsetCommandMailer::params2string("label", icp);
 994                 owner_->getDialogs().show("label", data, 0);
 995                 break;
 996         }
 997
 998         case LFUN_BOOKMARK_SAVE:
 999                 savePosition(strToUnsignedInt(cmd.argument));
1000                 break;
1001
1002         case LFUN_BOOKMARK_GOTO:
1003                 restorePosition(strToUnsignedInt(cmd.argument));
1004                 break;
1005
1006         case LFUN_REF_GOTO: {
1007                 string label = cmd.argument;
1008                 if (label.empty()) {
1009                         InsetRef * inset =
1010                                 static_cast<InsetRef*>(getInsetByCode(InsetBase::REF_CODE));
1011                         if (inset) {
1012                                 label = inset->getContents();
1013                                 savePosition(0);
1014                         }
1015                 }
1016
1017                 if (!label.empty())
1018                         bv_->gotoLabel(label);
1019                 break;
1020         }
1021
1022         case LFUN_TRACK_CHANGES:
1023                 trackChanges();
1024                 break;
1025
1026         case LFUN_MERGE_CHANGES:
1027                 owner_->getDialogs().show("changes");
1028                 break;
1029
1030         case LFUN_ACCEPT_ALL_CHANGES: {
1031                 bv_->cursor().reset();
1032 #warning FIXME changes
1033                 while (lyx::find::findNextChange(bv_))
1034                         bv_->getLyXText()->acceptChange(bv_->cursor());
1035                 update();
1036                 break;
1037         }
1038
1039         case LFUN_REJECT_ALL_CHANGES: {
1040                 bv_->cursor().reset();
1041 #warning FIXME changes
1042                 while (lyx::find::findNextChange(bv_))
1043                         bv_->getLyXText()->rejectChange(bv_->cursor());
1044                 update();
1045                 break;
1046         }
1047
1048         case LFUN_WORD_FIND:
1049                 lyx::find::find(bv_, cmd);
1050                 break;
1051
1052         case LFUN_WORD_REPLACE:
1053                 lyx::find::replace(bv_, cmd);
1054                 break;
1055
1056         case LFUN_MARK_OFF:
1057                 cur.clearSelection();
1058                 update();
1059                 cur.resetAnchor();
1060                 cur.message(N_("Mark off"));
1061                 break;
1062
1063         case LFUN_MARK_ON:
1064                 cur.clearSelection();
1065                 cur.mark() = true;
1066                 update();
1067                 cur.resetAnchor();
1068                 cur.message(N_("Mark on"));
1069                 break;
1070
1071         case LFUN_SETMARK:
1072                 cur.clearSelection();
1073                 if (cur.mark()) {
1074                         cur.mark() = false;
1075                         cur.message(N_("Mark removed"));
1076                 } else {
1077                         cur.mark() = true;
1078                         cur.message(N_("Mark set"));
1079                 }
1080                 cur.resetAnchor();
1081                 update();
1082                 break;
1083
1084         case LFUN_UNKNOWN_ACTION:
1085                 cur.errorMessage(N_("Unknown function!"));
1086                 break;
1087
1088         case LFUN_CENTER:
1089                 bv_->center();
1090                 break;
1091
1092         default:
1093                 return false;
1094         }
1095
1096         return true;
1097 }