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 #include "insets/insettext.h"
  50
  51 #include "frontends/Alert.h"
  52 #include "frontends/Dialogs.h"
  53 #include "frontends/FileDialog.h"
  54 #include "frontends/LyXView.h"
  55 #include "frontends/LyXScreenFactory.h"
  56 #include "frontends/screen.h"
  57 #include "frontends/WorkArea.h"
  58 #include "frontends/WorkAreaFactory.h"
  59
  60 #include "graphics/Previews.h"
  61
  62 #include "support/filetools.h"
  63 #include "support/globbing.h"
  64 #include "support/path_defines.h"
  65 #include "support/tostr.h"
  66
  67 #include <boost/bind.hpp>
  68
  69 using lyx::pos_type;
  70
  71 using lyx::support::AddPath;
  72 using lyx::support::bformat;
  73 using lyx::support::FileFilterList;
  74 using lyx::support::FileSearch;
  75 using lyx::support::IsDirWriteable;
  76 using lyx::support::MakeDisplayPath;
  77 using lyx::support::strToUnsignedInt;
  78 using lyx::support::system_lyxdir;
  79
  80 using std::endl;
  81 using std::istringstream;
  82 using std::make_pair;
  83 using std::min;
  84 using std::string;
  85
  86
  87 extern BufferList bufferlist;
  88
  89
  90 namespace {
  91
  92 unsigned int const saved_positions_num = 20;
  93
  94 // All the below connection objects are needed because of a bug in some
  95 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
  96 // to these connections we avoid a segfault upon startup, and also at exit.
  97 // (Lgb)
  98
  99 boost::signals::connection dispatchcon;
 100 boost::signals::connection timecon;
 101 boost::signals::connection doccon;
 102 boost::signals::connection resizecon;
 103 boost::signals::connection kpresscon;
 104 boost::signals::connection selectioncon;
 105 boost::signals::connection lostcon;
 106
 107
 108 } // anon namespace
 109
 110
 111 BufferView::Pimpl::Pimpl(BufferView & bv, LyXView * owner,
 112              int xpos, int ypos, int width, int height)
 113         : bv_(&bv), owner_(owner), buffer_(0), cursor_timeout(400),
 114           using_xterm_cursor(false), cursor_(bv)
 115 {
 116         xsel_cache_.set = false;
 117
 118         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 119         screen_.reset(LyXScreenFactory::create(workarea()));
 120
 121         // Setup the signals
 122         doccon = workarea().scrollDocView
 123                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 124         resizecon = workarea().workAreaResize
 125                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 126         dispatchcon = workarea().dispatch
 127                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 128         kpresscon = workarea().workAreaKeyPress
 129                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 130         selectioncon = workarea().selectionRequested
 131                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 132         lostcon = workarea().selectionLost
 133                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 134
 135         timecon = cursor_timeout.timeout
 136                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 137         cursor_timeout.start();
 138         saved_positions.resize(saved_positions_num);
 139 }
 140
 141
 142 void BufferView::Pimpl::addError(ErrorItem const & ei)
 143 {
 144         errorlist_.push_back(ei);
 145 }
 146
 147
 148 void BufferView::Pimpl::showReadonly(bool)
 149 {
 150         owner_->updateWindowTitle();
 151         owner_->getDialogs().updateBufferDependent(false);
 152 }
 153
 154
 155 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 156 {
 157         if (errorConnection_.connected())
 158                 disconnectBuffer();
 159
 160         errorConnection_ =
 161                 buf.error.connect(
 162                         boost::bind(&BufferView::Pimpl::addError, this, _1));
 163
 164         messageConnection_ =
 165                 buf.message.connect(
 166                         boost::bind(&LyXView::message, owner_, _1));
 167
 168         busyConnection_ =
 169                 buf.busy.connect(
 170                         boost::bind(&LyXView::busy, owner_, _1));
 171
 172         titleConnection_ =
 173                 buf.updateTitles.connect(
 174                         boost::bind(&LyXView::updateWindowTitle, owner_));
 175
 176         timerConnection_ =
 177                 buf.resetAutosaveTimers.connect(
 178                         boost::bind(&LyXView::resetAutosaveTimer, owner_));
 179
 180         readonlyConnection_ =
 181                 buf.readonly.connect(
 182                         boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 183
 184         closingConnection_ =
 185                 buf.closing.connect(
 186                         boost::bind(&BufferView::Pimpl::setBuffer, this, (Buffer *)0));
 187 }
 188
 189
 190 void BufferView::Pimpl::disconnectBuffer()
 191 {
 192         errorConnection_.disconnect();
 193         messageConnection_.disconnect();
 194         busyConnection_.disconnect();
 195         titleConnection_.disconnect();
 196         timerConnection_.disconnect();
 197         readonlyConnection_.disconnect();
 198         closingConnection_.disconnect();
 199 }
 200
 201
 202 void BufferView::Pimpl::newFile(string const & filename, string const & tname,
 203         bool isNamed)
 204 {
 205         setBuffer(::newFile(filename, tname, isNamed));
 206 }
 207
 208
 209 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 210 {
 211         // get absolute path of file and add ".lyx" to the filename if
 212         // necessary
 213         string s = FileSearch(string(), filename, "lyx");
 214
 215         bool const found = !s.empty();
 216
 217         if (!found)
 218                 s = filename;
 219
 220         // file already open?
 221         if (bufferlist.exists(s)) {
 222                 string const file = MakeDisplayPath(s, 20);
 223                 string text = bformat(_("The document %1$s is already "
 224                                         "loaded.\n\nDo you want to revert "
 225                                         "to the saved version?"), file);
 226                 int const ret = Alert::prompt(_("Revert to saved document?"),
 227                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 228
 229                 if (ret != 0) {
 230                         setBuffer(bufferlist.getBuffer(s));
 231                         return true;
 232                 }
 233                 // FIXME: should be LFUN_REVERT
 234                 if (!bufferlist.close(bufferlist.getBuffer(s), false))
 235                         return false;
 236                 // Fall through to new load. (Asger)
 237         }
 238
 239         Buffer * b;
 240
 241         if (found) {
 242                 b = bufferlist.newBuffer(s);
 243                 connectBuffer(*b);
 244                 if (!::loadLyXFile(b, s)) {
 245                         bufferlist.release(b);
 246                         return false;
 247                 }
 248         } else {
 249                 string text = bformat(_("The document %1$s does not yet "
 250                                         "exist.\n\nDo you want to create "
 251                                         "a new document?"), s);
 252                 int const ret = Alert::prompt(_("Create new document?"),
 253                          text, 0, 1, _("&Create"), _("Cancel"));
 254
 255                 if (ret == 0)
 256                         b = ::newFile(s, string(), true);
 257                 else
 258                         return false;
 259         }
 260
 261         setBuffer(b);
 262         bv_->showErrorList(_("Parse"));
 263
 264         if (tolastfiles)
 265                 LyX::ref().lastfiles().newFile(b->fileName());
 266
 267         return true;
 268 }
 269
 270
 271 WorkArea & BufferView::Pimpl::workarea() const
 272 {
 273         return *workarea_.get();
 274 }
 275
 276
 277 LyXScreen & BufferView::Pimpl::screen() const
 278 {
 279         return *screen_.get();
 280 }
 281
 282
 283 Painter & BufferView::Pimpl::painter() const
 284 {
 285         return workarea().getPainter();
 286 }
 287
 288
 289 void BufferView::Pimpl::top_y(int y)
 290 {
 291         top_y_ = y;
 292 }
 293
 294
 295 int BufferView::Pimpl::top_y() const
 296 {
 297         return top_y_;
 298 }
 299
 300
 301 void BufferView::Pimpl::setBuffer(Buffer * b)
 302 {
 303         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 304                             << b << ')' << endl;
 305         if (buffer_)
 306                 disconnectBuffer();
 307
 308         // set current buffer
 309         buffer_ = b;
 310
 311         // reset old cursor
 312         top_y_ = 0;
 313         cursor_ = LCursor(*bv_);
 314
 315         // if we're quitting lyx, don't bother updating stuff
 316         if (quitting)
 317                 return;
 318
 319         if (buffer_) {
 320                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 321                 connectBuffer(*buffer_);
 322
 323                 cursor_.push(buffer_->inset());
 324                 cursor_.resetAnchor();
 325                 buffer_->text().init(bv_);
 326
 327                 // If we don't have a text object for this, we make one
 328                 //if (bv_->text() == 0)
 329                 //      resizeCurrentBuffer();
 330
 331                 // Buffer-dependent dialogs should be updated or
 332                 // hidden. This should go here because some dialogs (eg ToC)
 333                 // require bv_->text.
 334                 owner_->getDialogs().updateBufferDependent(true);
 335                 owner_->setLayout(bv_->text()->getPar(0)->layout()->name());
 336         } else {
 337                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 338                 // we are closing the buffer, use the first buffer as current
 339                 buffer_ = bufferlist.first();
 340                 owner_->getDialogs().hideBufferDependent();
 341         }
 342
 343         update();
 344         updateScrollbar();
 345         owner_->updateMenubar();
 346         owner_->updateToolbar();
 347         owner_->updateLayoutChoice();
 348         owner_->updateWindowTitle();
 349
 350         if (lyx::graphics::Previews::activated() && buffer_)
 351                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 352 }
 353
 354
 355 bool BufferView::Pimpl::fitCursor()
 356 {
 357         if (!screen().fitCursor(bv_))
 358                 return false;
 359         updateScrollbar();
 360         return true;
 361 }
 362
 363
 364 void BufferView::Pimpl::redoCurrentBuffer()
 365 {
 366         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 367         if (buffer_ && bv_->text()) {
 368                 resizeCurrentBuffer();
 369                 updateScrollbar();
 370                 owner_->updateLayoutChoice();
 371         }
 372 }
 373
 374
 375 void BufferView::Pimpl::resizeCurrentBuffer()
 376 {
 377         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 378
 379         owner_->busy(true);
 380
 381         owner_->message(_("Formatting document..."));
 382
 383         LyXText * text = bv_->text();
 384         lyxerr << "### resizeCurrentBuffer: text " << text << endl;
 385         if (!text)
 386                 return;
 387
 388         // save the cursor mangled in init
 389         LCursor cur = bv_->cursor();
 390         text->init(bv_);
 391         update();
 392         bv_->cursor() = cur;
 393         bv_->cursor().updatePos();
 394         fitCursor();
 395
 396         switchKeyMap();
 397         owner_->busy(false);
 398
 399         // reset the "Formatting..." message
 400         owner_->clearMessage();
 401
 402         updateScrollbar();
 403 }
 404
 405
 406 void BufferView::Pimpl::updateScrollbar()
 407 {
 408         if (!bv_->text()) {
 409                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 410                 lyxerr << "no text in updateScrollbar" << endl;
 411                 workarea().setScrollbarParams(0, 0, 0);
 412                 return;
 413         }
 414
 415         LyXText const & t = *bv_->text();
 416
 417         lyxerr[Debug::GUI]
 418                 << "Updating scrollbar: height: " << t.height()
 419                 << " top_y: " << top_y()
 420                 << " default height " << defaultRowHeight() << endl;
 421
 422         workarea().setScrollbarParams(t.height(), top_y(), defaultRowHeight());
 423 }
 424
 425
 426 void BufferView::Pimpl::scrollDocView(int value)
 427 {
 428         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 429
 430         if (!buffer_)
 431                 return;
 432
 433         screen().hideCursor();
 434
 435         top_y(value);
 436         screen().redraw(*bv_);
 437
 438         if (!lyxrc.cursor_follows_scrollbar)
 439                 return;
 440
 441         int const height = defaultRowHeight();
 442         int const first = top_y() + height;
 443         int const last = top_y() + workarea().workHeight() - height;
 444
 445         bv_->cursor().reset(bv_->buffer()->inset());
 446         LyXText * text = bv_->text();
 447         int y = text->cursorY(bv_->cursor().front());
 448         if (y < first)
 449                 y = first;
 450         if (y > last)
 451                 y = last;
 452         text->setCursorFromCoordinates(bv_->cursor(), 0, y);
 453
 454         owner_->updateLayoutChoice();
 455 }
 456
 457
 458 void BufferView::Pimpl::scroll(int lines)
 459 {
 460         if (!buffer_)
 461                 return;
 462
 463         LyXText const * t = bv_->text();
 464         int const line_height = defaultRowHeight();
 465
 466         // The new absolute coordinate
 467         int new_top_y = top_y() + lines * line_height;
 468
 469         // Restrict to a valid value
 470         new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
 471         new_top_y = std::max(0, new_top_y);
 472
 473         scrollDocView(new_top_y);
 474
 475         // Update the scrollbar.
 476         workarea().setScrollbarParams(t->height(), top_y(), defaultRowHeight());
 477 }
 478
 479
 480 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 481                                          key_modifier::state state)
 482 {
 483         bv_->owner()->getLyXFunc().processKeySym(key, state);
 484
 485         /* This is perhaps a bit of a hack. When we move
 486          * around, or type, it's nice to be able to see
 487          * the cursor immediately after the keypress. So
 488          * we reset the toggle timeout and force the visibility
 489          * of the cursor. Note we cannot do this inside
 490          * dispatch() itself, because that's called recursively.
 491          */
 492         if (available()) {
 493                 cursor_timeout.restart();
 494                 screen().showCursor(*bv_);
 495         }
 496 }
 497
 498
 499 void BufferView::Pimpl::selectionRequested()
 500 {
 501         static string sel;
 502
 503         if (!available())
 504                 return;
 505
 506         LCursor & cur = bv_->cursor();
 507
 508         if (!cur.selection()) {
 509                 xsel_cache_.set = false;
 510                 return;
 511         }
 512
 513         if (!xsel_cache_.set ||
 514             cur.back() != xsel_cache_.cursor ||
 515             cur.anchor_.back() != xsel_cache_.anchor)
 516         {
 517                 xsel_cache_.cursor = cur.back();
 518                 xsel_cache_.anchor = cur.anchor_.back();
 519                 xsel_cache_.set = cur.selection();
 520                 sel = cur.selectionAsString(false);
 521                 if (!sel.empty())
 522                         workarea().putClipboard(sel);
 523         }
 524 }
 525
 526
 527 void BufferView::Pimpl::selectionLost()
 528 {
 529         if (available()) {
 530                 screen().hideCursor();
 531                 bv_->cursor().clearSelection();
 532                 xsel_cache_.set = false;
 533         }
 534 }
 535
 536
 537 void BufferView::Pimpl::workAreaResize()
 538 {
 539         static int work_area_width;
 540         static int work_area_height;
 541
 542         bool const widthChange = workarea().workWidth() != work_area_width;
 543         bool const heightChange = workarea().workHeight() != work_area_height;
 544
 545         // update from work area
 546         work_area_width = workarea().workWidth();
 547         work_area_height = workarea().workHeight();
 548
 549         if (buffer_ && widthChange) {
 550                 // The visible LyXView need a resize
 551                 resizeCurrentBuffer();
 552         }
 553
 554         if (widthChange || heightChange)
 555                 update();
 556
 557         // always make sure that the scrollbar is sane.
 558         updateScrollbar();
 559         owner_->updateLayoutChoice();
 560 }
 561
 562
 563 void BufferView::Pimpl::update()
 564 {
 565         //lyxerr << "BufferView::Pimpl::update(), buffer: " << buffer_ << endl;
 566         // fix cursor coordinate cache in case something went wrong
 567
 568         // check needed to survive LyX startup
 569         if (buffer_) {
 570                 // update all 'visible' paragraphs
 571                 ParagraphList::iterator beg;
 572                 ParagraphList::iterator end;
 573                 getParsInRange(buffer_->paragraphs(),
 574                                top_y(), top_y() + workarea().workHeight(),
 575                                beg, end);
 576                 bv_->text()->redoParagraphs(beg, end);
 577                 updateScrollbar();
 578         }
 579         screen().redraw(*bv_);
 580         bv_->owner()->view_state_changed();
 581 }
 582
 583
 584 // Callback for cursor timer
 585 void BufferView::Pimpl::cursorToggle()
 586 {
 587         if (buffer_)
 588                 screen().toggleCursor(*bv_);
 589         cursor_timeout.restart();
 590 }
 591
 592
 593 bool BufferView::Pimpl::available() const
 594 {
 595         return buffer_ && bv_->text();
 596 }
 597
 598
 599 Change const BufferView::Pimpl::getCurrentChange()
 600 {
 601         if (!bv_->buffer()->params().tracking_changes)
 602                 return Change(Change::UNCHANGED);
 603
 604         LyXText * text = bv_->getLyXText();
 605         LCursor & cur = bv_->cursor();
 606
 607         if (!cur.selection())
 608                 return Change(Change::UNCHANGED);
 609
 610         return text->getPar(cur.selBegin())
 611                 ->lookupChangeFull(cur.selBegin().pos());
 612 }
 613
 614
 615 void BufferView::Pimpl::savePosition(unsigned int i)
 616 {
 617         if (i >= saved_positions_num)
 618                 return;
 619         BOOST_ASSERT(bv_->cursor().inTexted());
 620         saved_positions[i] = Position(buffer_->fileName(),
 621                                       bv_->cursor().paragraph().id(),
 622                                       bv_->cursor().pos());
 623         if (i > 0)
 624                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 625 }
 626
 627
 628 void BufferView::Pimpl::restorePosition(unsigned int i)
 629 {
 630         if (i >= saved_positions_num)
 631                 return;
 632
 633         string const fname = saved_positions[i].filename;
 634
 635         bv_->cursor().clearSelection();
 636
 637         if (fname != buffer_->fileName()) {
 638                 Buffer * b = 0;
 639                 if (bufferlist.exists(fname))
 640                         b = bufferlist.getBuffer(fname);
 641                 else {
 642                         b = bufferlist.newBuffer(fname);
 643                         ::loadLyXFile(b, fname); // don't ask, just load it
 644                 }
 645                 if (b)
 646                         setBuffer(b);
 647         }
 648
 649         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 650         if (par == buffer_->par_iterator_end())
 651                 return;
 652
 653         bv_->text()->setCursor(
 654                 bv_->cursor(),
 655                 bv_->text()->parOffset(par.pit()),
 656                 min(par->size(), saved_positions[i].par_pos));
 657
 658         if (i > 0)
 659                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 660 }
 661
 662
 663 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 664 {
 665         return i < saved_positions_num && !saved_positions[i].filename.empty();
 666 }
 667
 668
 669 void BufferView::Pimpl::switchKeyMap()
 670 {
 671         if (!lyxrc.rtl_support)
 672                 return;
 673
 674         Intl & intl = owner_->getIntl();
 675         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 676                 if (intl.keymap == Intl::PRIMARY)
 677                         intl.KeyMapSec();
 678         } else {
 679                 if (intl.keymap == Intl::SECONDARY)
 680                         intl.KeyMapPrim();
 681         }
 682 }
 683
 684
 685 void BufferView::Pimpl::center()
 686 {
 687         LyXText * text = bv_->text();
 688
 689         bv_->cursor().clearSelection();
 690         int const half_height = workarea().workHeight() / 2;
 691         int new_y = text->cursorY(bv_->cursor().front()) - half_height;
 692         if (new_y < 0)
 693                 new_y = 0;
 694
 695         // FIXME: look at this comment again ...
 696         // This updates top_y() but means the fitCursor() call
 697         // from the update(FITCUR) doesn't realise that we might
 698         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 699         // the scrollbar to be updated as it should, so we have
 700         // to do it manually. Any operation that does a center()
 701         // and also might have moved top_y() must make sure to call
 702         // updateScrollbar() currently. Never mind that this is a
 703         // pretty obfuscated way of updating text->top_y()
 704         top_y(new_y);
 705 }
 706
 707
 708 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 709 {
 710         workarea().putClipboard(stuff);
 711 }
 712
 713
 714 InsetBase * BufferView::Pimpl::getInsetByCode(InsetBase::Code code)
 715 {
 716 #warning Does not work for mathed
 717         // Ok, this is a little bit too brute force but it
 718         // should work for now. Better infrastructure is coming. (Lgb)
 719
 720         Buffer * buf = bv_->buffer();
 721         Buffer::inset_iterator beg = buf->inset_iterator_begin();
 722         Buffer::inset_iterator end = buf->inset_iterator_end();
 723
 724         bool cursor_par_seen = false;
 725
 726         LCursor & cur = bv_->cursor();
 727         ParagraphList::iterator pit =  bv_->getLyXText()->getPar(cur.par());
 728
 729         for (; beg != end; ++beg) {
 730                 if (beg.getPar() == pit)
 731                         cursor_par_seen = true;
 732                 if (cursor_par_seen) {
 733                         if (beg.getPar() == pit && beg.getPos() >= cur.pos())
 734                                 break;
 735                         if (beg.getPar() != pit)
 736                                 break;
 737                 }
 738         }
 739         if (beg != end) {
 740                 // Now find the first inset that matches code.
 741                 for (; beg != end; ++beg) {
 742                         if (beg->lyxCode() == code)
 743                                 return &(*beg);
 744                 }
 745         }
 746         return 0;
 747 }
 748
 749
 750 void BufferView::Pimpl::MenuInsertLyXFile(string const & filenm)
 751 {
 752         string filename = filenm;
 753
 754         if (filename.empty()) {
 755                 // Launch a file browser
 756                 string initpath = lyxrc.document_path;
 757
 758                 if (available()) {
 759                         string const trypath = owner_->buffer()->filePath();
 760                         // If directory is writeable, use this as default.
 761                         if (IsDirWriteable(trypath))
 762                                 initpath = trypath;
 763                 }
 764
 765                 FileDialog fileDlg(_("Select LyX document to insert"),
 766                         LFUN_FILE_INSERT,
 767                         make_pair(string(_("Documents|#o#O")),
 768                                   string(lyxrc.document_path)),
 769                         make_pair(string(_("Examples|#E#e")),
 770                                   string(AddPath(system_lyxdir(), "examples"))));
 771
 772                 FileDialog::Result result =
 773                         fileDlg.open(initpath,
 774                                      FileFilterList(_("LyX Documents (*.lyx)")),
 775                                      string());
 776
 777                 if (result.first == FileDialog::Later)
 778                         return;
 779
 780                 filename = result.second;
 781
 782                 // check selected filename
 783                 if (filename.empty()) {
 784                         owner_->message(_("Canceled."));
 785                         return;
 786                 }
 787         }
 788
 789         // get absolute path of file and add ".lyx" to the filename if
 790         // necessary
 791         filename = FileSearch(string(), filename, "lyx");
 792
 793         string const disp_fn = MakeDisplayPath(filename);
 794         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 795         if (bv_->insertLyXFile(filename))
 796                 owner_->message(bformat(_("Document %1$s inserted."),
 797                                         disp_fn));
 798         else
 799                 owner_->message(bformat(_("Could not insert document %1$s"),
 800                                         disp_fn));
 801 }
 802
 803
 804 void BufferView::Pimpl::trackChanges()
 805 {
 806         Buffer * buf = bv_->buffer();
 807         bool const tracking = buf->params().tracking_changes;
 808
 809         if (!tracking) {
 810                 ParIterator const end = buf->par_iterator_end();
 811                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 812                         it->trackChanges();
 813                 buf->params().tracking_changes = true;
 814
 815                 // we cannot allow undos beyond the freeze point
 816                 buf->undostack().clear();
 817         } else {
 818                 update();
 819                 bv_->text()->setCursor(bv_->cursor(), 0, 0);
 820 #warning changes FIXME
 821                 bool found = lyx::find::findNextChange(bv_);
 822                 if (found) {
 823                         owner_->getDialogs().show("changes");
 824                         return;
 825                 }
 826
 827                 ParIterator const end = buf->par_iterator_end();
 828                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 829                         it->untrackChanges();
 830                 buf->params().tracking_changes = false;
 831         }
 832
 833         buf->redostack().clear();
 834 }
 835
 836
 837 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd0)
 838 {
 839         //
 840         // this is only called for mouse related events (including
 841         // LFUN_FILE_OPEN generated by drag-and-drop)
 842         //
 843         FuncRequest cmd = cmd0;
 844         cmd.y += bv_->top_y();
 845         //lyxerr << "*** workAreaDispatch: request: " << cmd << std::endl;
 846         LCursor cur(*bv_);
 847         cur.push(bv_->buffer()->inset());
 848         cur.resetAnchor();
 849         cur.selection() = bv_->cursor().selection();
 850         switch (cmd.action) {
 851
 852 #if 0
 853         case LFUN_MOUSE_MOTION: {
 854                 if (!available())
 855                         return false;
 856                 FuncRequest cmd1 = cmd;
 857                 DispatchResult res = cur.inset().dispatch(cur, cmd);
 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::dispatch  cmd: " << 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(bv_->buffer()->inset());
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(bv_->buffer()->inset());
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         case LFUN_BEGINNINGBUFSEL:
1093                 bv_->cursor().reset(bv_->buffer()->inset());
1094                 if (!cur.selection())
1095                         cur.resetAnchor();
1096                 bv_->text()->cursorTop(cur);
1097                 finishUndo();
1098                 break;
1099
1100         case LFUN_ENDBUFSEL:
1101                 bv_->cursor().reset(bv_->buffer()->inset());
1102                 if (!cur.selection())
1103                         cur.resetAnchor();
1104                 bv_->text()->cursorBottom(cur);
1105                 finishUndo();
1106                 break;
1107
1108         default:
1109                 return false;
1110         }
1111
1112         return true;
1113 }