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/insetfloatlist.h"
  49 #include "insets/insetref.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 bv_funcs::currentState;
  70
  71 using lyx::pos_type;
  72
  73 using lyx::support::AddPath;
  74 using lyx::support::bformat;
  75 using lyx::support::FileFilterList;
  76 using lyx::support::FileSearch;
  77 using lyx::support::IsDirWriteable;
  78 using lyx::support::MakeDisplayPath;
  79 using lyx::support::strToUnsignedInt;
  80 using lyx::support::system_lyxdir;
  81
  82 using std::endl;
  83 using std::make_pair;
  84 using std::min;
  85 using std::string;
  86
  87
  88 extern BufferList bufferlist;
  89
  90
  91 namespace {
  92
  93 unsigned int const saved_positions_num = 20;
  94
  95 // All the below connection objects are needed because of a bug in some
  96 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
  97 // to these connections we avoid a segfault upon startup, and also at exit.
  98 // (Lgb)
  99
 100 boost::signals::connection dispatchcon;
 101 boost::signals::connection timecon;
 102 boost::signals::connection doccon;
 103 boost::signals::connection resizecon;
 104 boost::signals::connection kpresscon;
 105 boost::signals::connection selectioncon;
 106 boost::signals::connection lostcon;
 107
 108
 109 } // anon namespace
 110
 111
 112 BufferView::Pimpl::Pimpl(BufferView & bv, LyXView * owner,
 113              int xpos, int ypos, int width, int height)
 114         : bv_(&bv), owner_(owner), buffer_(0), cursor_timeout(400),
 115           using_xterm_cursor(false), cursor_(bv)
 116 {
 117         xsel_cache_.set = false;
 118
 119         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 120         screen_.reset(LyXScreenFactory::create(workarea()));
 121
 122         // Setup the signals
 123         doccon = workarea().scrollDocView
 124                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 125         resizecon = workarea().workAreaResize
 126                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 127         dispatchcon = workarea().dispatch
 128                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 129         kpresscon = workarea().workAreaKeyPress
 130                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 131         selectioncon = workarea().selectionRequested
 132                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 133         lostcon = workarea().selectionLost
 134                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 135
 136         timecon = cursor_timeout.timeout
 137                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 138         cursor_timeout.start();
 139         saved_positions.resize(saved_positions_num);
 140 }
 141
 142
 143 void BufferView::Pimpl::addError(ErrorItem const & ei)
 144 {
 145         errorlist_.push_back(ei);
 146 }
 147
 148
 149 void BufferView::Pimpl::showReadonly(bool)
 150 {
 151         owner_->updateWindowTitle();
 152         owner_->getDialogs().updateBufferDependent(false);
 153 }
 154
 155
 156 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 157 {
 158         if (errorConnection_.connected())
 159                 disconnectBuffer();
 160
 161         errorConnection_ =
 162                 buf.error.connect(boost::bind(&BufferView::Pimpl::addError, this, _1));
 163         messageConnection_ =
 164                 buf.message.connect(boost::bind(&LyXView::message, owner_, _1));
 165         busyConnection_ =
 166                 buf.busy.connect(boost::bind(&LyXView::busy, owner_, _1));
 167         titleConnection_ =
 168                 buf.updateTitles.connect(boost::bind(&LyXView::updateWindowTitle, owner_));
 169         timerConnection_ =
 170                 buf.resetAutosaveTimers.connect(boost::bind(&LyXView::resetAutosaveTimer, owner_));
 171         readonlyConnection_ =
 172                 buf.readonly.connect(boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 173         closingConnection_ =
 174                 buf.closing.connect(boost::bind(&BufferView::Pimpl::buffer, this, (Buffer *)0));
 175 }
 176
 177
 178 void BufferView::Pimpl::disconnectBuffer()
 179 {
 180         errorConnection_.disconnect();
 181         messageConnection_.disconnect();
 182         busyConnection_.disconnect();
 183         titleConnection_.disconnect();
 184         timerConnection_.disconnect();
 185         readonlyConnection_.disconnect();
 186         closingConnection_.disconnect();
 187 }
 188
 189
 190 bool BufferView::Pimpl::newFile(string const & filename,
 191                                 string const & tname,
 192                                 bool isNamed)
 193 {
 194         Buffer * b = ::newFile(filename, tname, isNamed);
 195         buffer(b);
 196         return true;
 197 }
 198
 199
 200 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 201 {
 202         // get absolute path of file and add ".lyx" to the filename if
 203         // necessary
 204         string s = FileSearch(string(), filename, "lyx");
 205
 206         bool const found = !s.empty();
 207
 208         if (!found)
 209                 s = filename;
 210
 211         // file already open?
 212         if (bufferlist.exists(s)) {
 213                 string const file = MakeDisplayPath(s, 20);
 214                 string text = bformat(_("The document %1$s is already "
 215                                         "loaded.\n\nDo you want to revert "
 216                                         "to the saved version?"), file);
 217                 int const ret = Alert::prompt(_("Revert to saved document?"),
 218                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 219
 220                 if (ret != 0) {
 221                         buffer(bufferlist.getBuffer(s));
 222                         return true;
 223                 } else {
 224                         // FIXME: should be LFUN_REVERT
 225                         if (!bufferlist.close(bufferlist.getBuffer(s), false))
 226                                 return false;
 227                         // Fall through to new load. (Asger)
 228                 }
 229         }
 230
 231         Buffer * b;
 232
 233         if (found) {
 234                 b = bufferlist.newBuffer(s);
 235                 connectBuffer(*b);
 236                 if (!::loadLyXFile(b, s)) {
 237                         bufferlist.release(b);
 238                         return false;
 239                 }
 240         } else {
 241                 string text = bformat(_("The document %1$s does not yet "
 242                                         "exist.\n\nDo you want to create "
 243                                         "a new document?"), s);
 244                 int const ret = Alert::prompt(_("Create new document?"),
 245                          text, 0, 1, _("&Create"), _("Cancel"));
 246
 247                 if (ret == 0)
 248                         b = ::newFile(s, string(), true);
 249                 else
 250                         return false;
 251         }
 252
 253         buffer(b);
 254         bv_->showErrorList(_("Parse"));
 255
 256         if (tolastfiles)
 257                 LyX::ref().lastfiles().newFile(b->fileName());
 258
 259         return true;
 260 }
 261
 262
 263 WorkArea & BufferView::Pimpl::workarea() const
 264 {
 265         return *workarea_.get();
 266 }
 267
 268
 269 LyXScreen & BufferView::Pimpl::screen() const
 270 {
 271         return *screen_.get();
 272 }
 273
 274
 275 Painter & BufferView::Pimpl::painter() const
 276 {
 277         return workarea().getPainter();
 278 }
 279
 280
 281 void BufferView::Pimpl::top_y(int y)
 282 {
 283         top_y_ = y;
 284 }
 285
 286
 287 int BufferView::Pimpl::top_y() const
 288 {
 289         return top_y_;
 290 }
 291
 292
 293 void BufferView::Pimpl::buffer(Buffer * b)
 294 {
 295         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 296                             << b << ')' << endl;
 297         if (buffer_) {
 298                 disconnectBuffer();
 299                 //delete bv_->text();
 300                 //bv_->setText(0);
 301         }
 302
 303         // reset old cursor
 304         cursor_.reset();
 305
 306         // set current buffer
 307         buffer_ = b;
 308
 309         top_y_ = 0;
 310
 311         // if we're quitting lyx, don't bother updating stuff
 312         if (quitting)
 313                 return;
 314
 315         // if we are closing the buffer, use the first buffer as current
 316         if (!buffer_)
 317                 buffer_ = bufferlist.first();
 318
 319         if (buffer_) {
 320                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 321                 connectBuffer(*buffer_);
 322
 323                 buffer_->text().init(bv_);
 324                 buffer_->text().textwidth_ = workarea().workWidth();
 325                 buffer_->text().fullRebreak();
 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         } else {
 336                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 337                 owner_->getDialogs().hideBufferDependent();
 338         }
 339
 340         update();
 341         updateScrollbar();
 342         owner_->updateMenubar();
 343         owner_->updateToolbar();
 344         owner_->updateLayoutChoice();
 345         owner_->updateWindowTitle();
 346
 347         // Don't forget to update the Layout
 348         if (buffer_)
 349                 owner_->setLayout(bv_->text()->cursorPar()->layout()->name());
 350
 351         if (lyx::graphics::Previews::activated() && buffer_)
 352                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 353 }
 354
 355
 356 bool BufferView::Pimpl::fitCursor()
 357 {
 358         if (screen().fitCursor(bv_)) {
 359                 updateScrollbar();
 360                 return true;
 361         }
 362         return false;
 363 }
 364
 365
 366 void BufferView::Pimpl::redoCurrentBuffer()
 367 {
 368         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 369         if (buffer_ && bv_->text()) {
 370                 resizeCurrentBuffer();
 371                 updateScrollbar();
 372                 owner_->updateLayoutChoice();
 373         }
 374 }
 375
 376
 377 void BufferView::Pimpl::resizeCurrentBuffer()
 378 {
 379         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 380
 381         int par = -1;
 382         int selstartpar = -1;
 383         int selendpar = -1;
 384
 385         pos_type pos = 0;
 386         pos_type selstartpos = 0;
 387         pos_type selendpos = 0;
 388         bool sel = false;
 389         bool mark_set  = false;
 390
 391         owner_->busy(true);
 392
 393         owner_->message(_("Formatting document..."));
 394
 395         LyXText * text = bv_->text();
 396         lyxerr << "### resizeCurrentBuffer: text " << text << endl;
 397         if (!text)
 398                 return;
 399
 400         LCursor & cur = bv_->cursor();
 401         par = cur.par();
 402         pos = cur.pos();
 403         selstartpar = cur.selBegin().par();
 404         selstartpos = cur.selBegin().pos();
 405         selendpar = cur.selEnd().par();
 406         selendpos = cur.selEnd().pos();
 407         sel = cur.selection();
 408         mark_set = cur.mark();
 409         text->textwidth_ = bv_->workWidth();
 410         text->fullRebreak();
 411         update();
 412
 413         if (par != -1) {
 414                 cur.selection() = true;
 415                 // At this point just to avoid the Delete-Empty-Paragraph-
 416                 // Mechanism when setting the cursor.
 417                 cur.mark() = mark_set;
 418                 if (sel) {
 419                         text->setCursor(selstartpar, selstartpos);
 420                         cur.resetAnchor();
 421                         text->setCursor(selendpar, selendpos);
 422                         cur.setSelection();
 423                         text->setCursor(par, pos);
 424                 } else {
 425                         text->setCursor(par, pos);
 426                         cur.resetAnchor();
 427                         cur.selection() = false;
 428                 }
 429         }
 430
 431         fitCursor();
 432
 433         switchKeyMap();
 434         owner_->busy(false);
 435
 436         // reset the "Formatting..." message
 437         owner_->clearMessage();
 438
 439         updateScrollbar();
 440 }
 441
 442
 443 void BufferView::Pimpl::updateScrollbar()
 444 {
 445         if (!bv_->text()) {
 446                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 447                 workarea().setScrollbarParams(0, 0, 0);
 448                 return;
 449         }
 450
 451         LyXText const & t = *bv_->text();
 452
 453         lyxerr[Debug::GUI] << "Updating scrollbar: h " << t.height << ", top_y() "
 454                 << top_y() << ", default height " << defaultRowHeight() << endl;
 455
 456         workarea().setScrollbarParams(t.height, top_y(), defaultRowHeight());
 457 }
 458
 459
 460 void BufferView::Pimpl::scrollDocView(int value)
 461 {
 462         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 463
 464         if (!buffer_)
 465                 return;
 466
 467         screen().hideCursor();
 468
 469         top_y(value);
 470         screen().redraw(*bv_);
 471
 472         if (!lyxrc.cursor_follows_scrollbar)
 473                 return;
 474
 475         int const height = defaultRowHeight();
 476         int const first = top_y() + height;
 477         int const last = top_y() + workarea().workHeight() - height;
 478
 479         LyXText * text = bv_->text();
 480         int y = text->cursorY(bv_->cursor().cursor_.front());
 481         if (y < first)
 482                 text->setCursorFromCoordinates(0, first);
 483         else if (y > last)
 484                 text->setCursorFromCoordinates(0, last);
 485
 486         owner_->updateLayoutChoice();
 487 }
 488
 489
 490 void BufferView::Pimpl::scroll(int lines)
 491 {
 492         if (!buffer_)
 493                 return;
 494
 495         LyXText const * t = bv_->text();
 496         int const line_height = defaultRowHeight();
 497
 498         // The new absolute coordinate
 499         int new_top_y = top_y() + lines * line_height;
 500
 501         // Restrict to a valid value
 502         new_top_y = std::min(t->height - 4 * line_height, new_top_y);
 503         new_top_y = std::max(0, new_top_y);
 504
 505         scrollDocView(new_top_y);
 506
 507         // Update the scrollbar.
 508         workarea().setScrollbarParams(t->height, top_y(), defaultRowHeight());
 509 }
 510
 511
 512 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 513                                          key_modifier::state state)
 514 {
 515         bv_->owner()->getLyXFunc().processKeySym(key, state);
 516
 517         /* This is perhaps a bit of a hack. When we move
 518          * around, or type, it's nice to be able to see
 519          * the cursor immediately after the keypress. So
 520          * we reset the toggle timeout and force the visibility
 521          * of the cursor. Note we cannot do this inside
 522          * dispatch() itself, because that's called recursively.
 523          */
 524         if (available()) {
 525                 cursor_timeout.restart();
 526                 screen().showCursor(*bv_);
 527         }
 528 }
 529
 530
 531 void BufferView::Pimpl::selectionRequested()
 532 {
 533         static string sel;
 534
 535         if (!available())
 536                 return;
 537
 538         LCursor & cur = bv_->cursor();
 539
 540         if (!cur.selection()) {
 541                 xsel_cache_.set = false;
 542                 return;
 543         }
 544
 545         if (!xsel_cache_.set ||
 546             cur.cursor_.back() != xsel_cache_.cursor ||
 547             cur.anchor_.back() != xsel_cache_.anchor)
 548         {
 549                 xsel_cache_.cursor = cur.cursor_.back();
 550                 xsel_cache_.anchor = cur.anchor_.back();
 551                 xsel_cache_.set = cur.selection();
 552                 sel = cur.selectionAsString(false);
 553                 if (!sel.empty())
 554                         workarea().putClipboard(sel);
 555         }
 556 }
 557
 558
 559 void BufferView::Pimpl::selectionLost()
 560 {
 561         if (available()) {
 562                 screen().hideCursor();
 563                 bv_->cursor().clearSelection();
 564                 xsel_cache_.set = false;
 565         }
 566 }
 567
 568
 569 void BufferView::Pimpl::workAreaResize()
 570 {
 571         static int work_area_width;
 572         static int work_area_height;
 573
 574         bool const widthChange = workarea().workWidth() != work_area_width;
 575         bool const heightChange = workarea().workHeight() != work_area_height;
 576
 577         // update from work area
 578         work_area_width = workarea().workWidth();
 579         work_area_height = workarea().workHeight();
 580
 581         if (buffer_ && widthChange) {
 582                 // The visible LyXView need a resize
 583                 resizeCurrentBuffer();
 584         }
 585
 586         if (widthChange || heightChange)
 587                 update();
 588
 589         // always make sure that the scrollbar is sane.
 590         updateScrollbar();
 591         owner_->updateLayoutChoice();
 592 }
 593
 594
 595 void BufferView::Pimpl::update()
 596 {
 597         //lyxerr << "BufferView::update()" << endl;
 598         // fix cursor coordinate cache in case something went wrong
 599
 600         // check needed to survive LyX startup
 601         if (bv_->getLyXText()) {
 602                 // update all 'visible' paragraphs
 603                 ParagraphList::iterator beg;
 604                 ParagraphList::iterator end;
 605                 getParsInRange(buffer_->paragraphs(),
 606                                top_y(), top_y() + workarea().workHeight(),
 607                                beg, end);
 608                 bv_->text()->redoParagraphs(beg, end);
 609                 updateScrollbar();
 610         }
 611         screen().redraw(*bv_);
 612 }
 613
 614
 615 // Callback for cursor timer
 616 void BufferView::Pimpl::cursorToggle()
 617 {
 618         if (!buffer_) {
 619                 cursor_timeout.restart();
 620                 return;
 621         }
 622
 623         screen().toggleCursor(*bv_);
 624         cursor_timeout.restart();
 625 }
 626
 627
 628 bool BufferView::Pimpl::available() const
 629 {
 630         return buffer_ && bv_->text();
 631 }
 632
 633
 634 Change const BufferView::Pimpl::getCurrentChange()
 635 {
 636         if (!bv_->buffer()->params().tracking_changes)
 637                 return Change(Change::UNCHANGED);
 638
 639         LyXText * text = bv_->getLyXText();
 640         LCursor & cur = bv_->cursor();
 641
 642         if (!cur.selection())
 643                 return Change(Change::UNCHANGED);
 644
 645         return text->getPar(cur.selBegin())
 646                 ->lookupChangeFull(cur.selBegin().pos());
 647 }
 648
 649
 650 void BufferView::Pimpl::savePosition(unsigned int i)
 651 {
 652         if (i >= saved_positions_num)
 653                 return;
 654         saved_positions[i] = Position(buffer_->fileName(),
 655                                       bv_->text()->cursorPar()->id(),
 656                                       bv_->text()->cursor().pos());
 657         if (i > 0)
 658                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 659 }
 660
 661
 662 void BufferView::Pimpl::restorePosition(unsigned int i)
 663 {
 664         if (i >= saved_positions_num)
 665                 return;
 666
 667         string const fname = saved_positions[i].filename;
 668
 669         bv_->cursor().clearSelection();
 670
 671         if (fname != buffer_->fileName()) {
 672                 Buffer * b = 0;
 673                 if (bufferlist.exists(fname))
 674                         b = bufferlist.getBuffer(fname);
 675                 else {
 676                         b = bufferlist.newBuffer(fname);
 677                         ::loadLyXFile(b, fname); // don't ask, just load it
 678                 }
 679                 if (b)
 680                         buffer(b);
 681         }
 682
 683         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 684         if (par == buffer_->par_iterator_end())
 685                 return;
 686
 687         bv_->text()->setCursor(par.pit(),
 688                              min(par->size(), saved_positions[i].par_pos));
 689
 690         if (i > 0)
 691                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 692 }
 693
 694
 695 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 696 {
 697         return i < saved_positions_num && !saved_positions[i].filename.empty();
 698 }
 699
 700
 701 void BufferView::Pimpl::switchKeyMap()
 702 {
 703         if (!lyxrc.rtl_support)
 704                 return;
 705
 706         Intl & intl = owner_->getIntl();
 707         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 708                 if (intl.keymap == Intl::PRIMARY)
 709                         intl.KeyMapSec();
 710         } else {
 711                 if (intl.keymap == Intl::SECONDARY)
 712                         intl.KeyMapPrim();
 713         }
 714 }
 715
 716
 717 void BufferView::Pimpl::center()
 718 {
 719         LyXText * text = bv_->text();
 720
 721         bv_->cursor().clearSelection();
 722         int const half_height = workarea().workHeight() / 2;
 723         int new_y = text->cursorY(bv_->cursor().cursor_.front()) - half_height;
 724         if (new_y < 0)
 725                 new_y = 0;
 726
 727         // FIXME: look at this comment again ...
 728         // This updates top_y() but means the fitCursor() call
 729         // from the update(FITCUR) doesn't realise that we might
 730         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 731         // the scrollbar to be updated as it should, so we have
 732         // to do it manually. Any operation that does a center()
 733         // and also might have moved top_y() must make sure to call
 734         // updateScrollbar() currently. Never mind that this is a
 735         // pretty obfuscated way of updating text->top_y()
 736         top_y(new_y);
 737 }
 738
 739
 740 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 741 {
 742         workarea().putClipboard(stuff);
 743 }
 744
 745
 746 InsetBase * BufferView::Pimpl::getInsetByCode(InsetBase::Code code)
 747 {
 748 #if 0
 749         CursorSlice cursor = bv_->getLyXText()->cursor;
 750         Buffer::inset_iterator it =
 751                 find_if(Buffer::inset_iterator(
 752                         cursorPar(), cursor().pos()),
 753                         buffer_->inset_iterator_end(),
 754                         lyx::compare_memfun(&Inset::lyxCode, code));
 755         return it != buffer_->inset_iterator_end() ? (*it) : 0;
 756 #else
 757         // Ok, this is a little bit too brute force but it
 758         // should work for now. Better infrastructure is coming. (Lgb)
 759
 760         Buffer * b = bv_->buffer();
 761         LyXText * text = bv_->getLyXText();
 762
 763         Buffer::inset_iterator beg = b->inset_iterator_begin();
 764         Buffer::inset_iterator end = b->inset_iterator_end();
 765
 766         bool cursor_par_seen = false;
 767
 768         for (; beg != end; ++beg) {
 769                 if (beg.getPar() == text->cursorPar()) {
 770                         cursor_par_seen = true;
 771                 }
 772                 if (cursor_par_seen) {
 773                         if (beg.getPar() == text->cursorPar()
 774                             && beg.getPos() >= text->cursor().pos()) {
 775                                 break;
 776                         }
 777                         if (beg.getPar() != text->cursorPar()) {
 778                                 break;
 779                         }
 780                 }
 781
 782         }
 783         if (beg != end) {
 784                 // Now find the first inset that matches code.
 785                 for (; beg != end; ++beg) {
 786                         if (beg->lyxCode() == code)
 787                                 return &(*beg);
 788                 }
 789         }
 790         return 0;
 791 #endif
 792 }
 793
 794
 795 void BufferView::Pimpl::MenuInsertLyXFile(string const & filenm)
 796 {
 797         string filename = filenm;
 798
 799         if (filename.empty()) {
 800                 // Launch a file browser
 801                 string initpath = lyxrc.document_path;
 802
 803                 if (available()) {
 804                         string const trypath = owner_->buffer()->filePath();
 805                         // If directory is writeable, use this as default.
 806                         if (IsDirWriteable(trypath))
 807                                 initpath = trypath;
 808                 }
 809
 810                 FileDialog fileDlg(_("Select LyX document to insert"),
 811                         LFUN_FILE_INSERT,
 812                         make_pair(string(_("Documents|#o#O")),
 813                                   string(lyxrc.document_path)),
 814                         make_pair(string(_("Examples|#E#e")),
 815                                   string(AddPath(system_lyxdir(), "examples"))));
 816
 817                 FileDialog::Result result =
 818                         fileDlg.open(initpath,
 819                                      FileFilterList(_("LyX Documents (*.lyx)")),
 820                                      string());
 821
 822                 if (result.first == FileDialog::Later)
 823                         return;
 824
 825                 filename = result.second;
 826
 827                 // check selected filename
 828                 if (filename.empty()) {
 829                         owner_->message(_("Canceled."));
 830                         return;
 831                 }
 832         }
 833
 834         // get absolute path of file and add ".lyx" to the filename if
 835         // necessary
 836         filename = FileSearch(string(), filename, "lyx");
 837
 838         string const disp_fn = MakeDisplayPath(filename);
 839         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 840         if (bv_->insertLyXFile(filename))
 841                 owner_->message(bformat(_("Document %1$s inserted."),
 842                                         disp_fn));
 843         else
 844                 owner_->message(bformat(_("Could not insert document %1$s"),
 845                                         disp_fn));
 846 }
 847
 848
 849 void BufferView::Pimpl::trackChanges()
 850 {
 851         Buffer * buf = bv_->buffer();
 852         bool const tracking(buf->params().tracking_changes);
 853
 854         if (!tracking) {
 855                 ParIterator const end = buf->par_iterator_end();
 856                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 857                         it->trackChanges();
 858                 buf->params().tracking_changes = true;
 859
 860                 // we cannot allow undos beyond the freeze point
 861                 buf->undostack().clear();
 862         } else {
 863                 update();
 864                 bv_->text()->setCursor(0, 0);
 865 #warning changes FIXME
 866                 bool found = lyx::find::findNextChange(bv_);
 867                 if (found) {
 868                         owner_->getDialogs().show("changes");
 869                         return;
 870                 }
 871
 872                 ParIterator const end = buf->par_iterator_end();
 873                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 874                         it->untrackChanges();
 875                 buf->params().tracking_changes = false;
 876         }
 877
 878         buf->redostack().clear();
 879 }
 880
 881
 882 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd0)
 883 {
 884         //
 885         // this is only called for mouse related events.
 886         //
 887         FuncRequest cmd = cmd0;
 888         cmd.y += bv_->top_y();
 889         //lyxerr << "*** workAreaDispatch: request: " << cmd << std::endl;
 890         LCursor cur(*bv_);
 891         cur.selection() = bv_->cursor().selection();
 892         switch (cmd.action) {
 893
 894 #if 0
 895         case LFUN_MOUSE_MOTION: {
 896                 if (!available())
 897                         return false;
 898                 FuncRequest cmd1 = cmd;
 899                 InsetBase * inset = cur.inset();
 900                 DispatchResult res;
 901                 if (inset) {
 902                         res = inset->dispatch(cur, cmd);
 903                 } else {
 904                         res = bv_->text()->dispatch(cur, cmd);
 905                 }
 906
 907                 if (fitCursor() || res.update()) {
 908                         update();
 909                         cur.updatePos();
 910                 }
 911                 return true;
 912         }
 913 #else
 914         case LFUN_MOUSE_MOTION:
 915 #endif
 916
 917         case LFUN_MOUSE_PRESS:
 918         case LFUN_MOUSE_RELEASE:
 919         case LFUN_MOUSE_DOUBLE:
 920         case LFUN_MOUSE_TRIPLE: {
 921                 // We pass those directly to the Bufferview, since
 922                 // otherwise selection handling breaks down
 923
 924                 // Doesn't go through lyxfunc, so we need to update
 925                 // the layout choice etc. ourselves
 926
 927                 // e.g. Qt mouse press when no buffer
 928                 if (!available())
 929                         return false;
 930
 931                 screen().hideCursor();
 932
 933                 // either the inset under the cursor or the
 934                 // surrounding LyXText will handle this event.
 935
 936                 // built temporary path to inset
 937                 LyXText * text = bv_->text();
 938                 InsetBase * const inset_hit = text->checkInsetHit(cmd.x, cmd.y);
 939                 if (inset_hit)
 940                         inset_hit->edit(cur, cmd.x, cmd.y);
 941                 else
 942                         text->setCursorFromCoordinates(cur.current(), cmd.x, cmd.y);
 943                 lyxerr << "created temp cursor: " << cur << endl;
 944
 945                 // Dispatch to the temp cursor.
 946                 // An inset (or LyXText) can assign this to bv->cursor()
 947                 // if it wishes to do so.
 948                 DispatchResult res = cur.dispatch(cmd);
 949
 950                 if (fitCursor() || res.update())
 951                         update();
 952
 953                 // see workAreaKeyPress
 954                 cursor_timeout.restart();
 955                 screen().showCursor(*bv_);
 956
 957                 // skip these when selecting
 958                 if (cmd.action != LFUN_MOUSE_MOTION) {
 959                         owner_->updateLayoutChoice();
 960                         owner_->updateToolbar();
 961                 }
 962
 963                 // slight hack: this is only called currently when we
 964                 // clicked somewhere, so we force through the display
 965                 // of the new status here.
 966                 owner_->clearMessage();
 967                 return true;
 968         }
 969
 970         default:
 971                 BOOST_ASSERT(false);
 972         }
 973         return true;
 974 }
 975
 976
 977 bool BufferView::Pimpl::dispatch(FuncRequest const & cmd)
 978 {
 979         //lyxerr << "*** BufferView::Pimpl: request: " << cmd << std::endl;
 980         // Make sure that the cached BufferView is correct.
 981         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
 982                 << " action[" << cmd.action << ']'
 983                 << " arg[" << cmd.argument << ']'
 984                 << " x[" << cmd.x << ']'
 985                 << " y[" << cmd.y << ']'
 986                 << " button[" << cmd.button() << ']'
 987                 << endl;
 988
 989         LyXTextClass const & tclass = buffer_->params().getLyXTextClass();
 990         LCursor & cur = bv_->cursor();
 991
 992         switch (cmd.action) {
 993
 994         case LFUN_UNDO:
 995                 if (available()) {
 996                         cur.message(_("Undo"));
 997                         cur.clearSelection();
 998                         if (!textUndo(*bv_))
 999                                 cur.message(_("No further undo information"));
1000                         update();
1001                         switchKeyMap();
1002                 }
1003                 break;
1004
1005         case LFUN_REDO:
1006                 if (available()) {
1007                         cur.message(_("Redo"));
1008                         cur.clearSelection();
1009                         if (!textRedo(*bv_))
1010                                 cur.message(_("No further redo information"));
1011                         update();
1012                         switchKeyMap();
1013                 }
1014                 break;
1015
1016         case LFUN_FILE_INSERT:
1017                 MenuInsertLyXFile(cmd.argument);
1018                 break;
1019
1020         case LFUN_FILE_INSERT_ASCII_PARA:
1021                 InsertAsciiFile(bv_, cmd.argument, true);
1022                 break;
1023
1024         case LFUN_FILE_INSERT_ASCII:
1025                 InsertAsciiFile(bv_, cmd.argument, false);
1026                 break;
1027
1028         case LFUN_FONT_STATE:
1029                 owner_->getLyXFunc().setMessage(currentState(bv_));
1030                 break;
1031
1032         case LFUN_INSERT_LABEL: {
1033                 // Try and generate a valid label
1034                 string const contents = cmd.argument.empty() ?
1035                         getPossibleLabel(*bv_) : cmd.argument;
1036                 InsetCommandParams icp("label", contents);
1037                 string data = InsetCommandMailer::params2string("label", icp);
1038                 owner_->getDialogs().show("label", data, 0);
1039                 break;
1040         }
1041
1042         case LFUN_BOOKMARK_SAVE:
1043                 savePosition(strToUnsignedInt(cmd.argument));
1044                 break;
1045
1046         case LFUN_BOOKMARK_GOTO:
1047                 restorePosition(strToUnsignedInt(cmd.argument));
1048                 break;
1049
1050         case LFUN_REF_GOTO: {
1051                 string label = cmd.argument;
1052                 if (label.empty()) {
1053                         InsetRef * inset =
1054                                 static_cast<InsetRef*>(getInsetByCode(InsetBase::REF_CODE));
1055                         if (inset) {
1056                                 label = inset->getContents();
1057                                 savePosition(0);
1058                         }
1059                 }
1060
1061                 if (!label.empty())
1062                         bv_->gotoLabel(label);
1063         }
1064         break;
1065
1066         case LFUN_FLOAT_LIST:
1067                 if (tclass.floats().typeExist(cmd.argument)) {
1068                         InsetBase * inset = new InsetFloatList(cmd.argument);
1069
1070                         // not quite sure if we want this...
1071                         bv_->text()->recUndo(bv_->text()->cursor().par());
1072                         freezeUndo();
1073
1074                         cur.clearSelection();
1075                         bv_->text()->breakParagraph(bv_->buffer()->paragraphs());
1076
1077                         if (!bv_->text()->cursorPar()->empty()) {
1078                                 bv_->text()->cursorLeft(true);
1079                                 bv_->text()->breakParagraph(bv_->buffer()->paragraphs());
1080                         }
1081
1082                         bv_->text()->setLayout(tclass.defaultLayoutName());
1083                         bv_->text()->setParagraph(Spacing(), LYX_ALIGN_LAYOUT, string(), 0);
1084                         bv_->getLyXText()->insertInset(inset);
1085                         unFreezeUndo();
1086                 } else {
1087                         lyxerr << "Non-existent float type: "
1088                                << cmd.argument << endl;
1089                 }
1090                 break;
1091
1092         case LFUN_PARAGRAPH_APPLY:
1093                 setParagraphParams(*bv_, cmd.argument);
1094                 break;
1095
1096         case LFUN_THESAURUS_ENTRY: {
1097                 string arg = cmd.argument;
1098
1099                 if (arg.empty()) {
1100                         arg = cur.selectionAsString(false);
1101                         // FIXME
1102                         if (arg.size() > 100 || arg.empty()) {
1103                                 // Get word or selection
1104                                 bv_->getLyXText()->selectWordWhenUnderCursor(lyx::WHOLE_WORD);
1105                                 arg = cur.selectionAsString(false);
1106                                 // FIXME: where is getLyXText()->unselect(bv_) ?
1107                         }
1108                 }
1109
1110                 bv_->owner()->getDialogs().show("thesaurus", arg);
1111                 break;
1112         }
1113
1114         case LFUN_TRACK_CHANGES:
1115                 trackChanges();
1116                 break;
1117
1118         case LFUN_MERGE_CHANGES:
1119                 owner_->getDialogs().show("changes");
1120                 break;
1121
1122         case LFUN_ACCEPT_ALL_CHANGES: {
1123                 bv_->text()->setCursor(0, 0);
1124 #warning FIXME changes
1125                 while (lyx::find::findNextChange(bv_))
1126                         bv_->getLyXText()->acceptChange();
1127                 update();
1128                 break;
1129         }
1130
1131         case LFUN_REJECT_ALL_CHANGES: {
1132                 bv_->text()->setCursor(0, 0);
1133 #warning FIXME changes
1134                 while (lyx::find::findNextChange(bv_))
1135                         bv_->getLyXText()->rejectChange();
1136                 update();
1137                 break;
1138         }
1139
1140         case LFUN_ACCEPT_CHANGE: {
1141                 bv_->getLyXText()->acceptChange();
1142                 update();
1143                 break;
1144         }
1145
1146         case LFUN_REJECT_CHANGE: {
1147                 bv_->getLyXText()->rejectChange();
1148                 update();
1149                 break;
1150         }
1151
1152         case LFUN_WORD_FIND:
1153                 lyx::find::find(bv_, cmd);
1154                 break;
1155
1156         case LFUN_WORD_REPLACE:
1157                 lyx::find::replace(bv_, cmd);
1158                 break;
1159
1160         case LFUN_MARK_OFF:
1161                 cur.clearSelection();
1162                 update();
1163                 cur.resetAnchor();
1164                 cur.message(N_("Mark off"));
1165                 break;
1166
1167         case LFUN_MARK_ON:
1168                 cur.clearSelection();
1169                 cur.mark() = true;
1170                 update();
1171                 cur.resetAnchor();
1172                 cur.message(N_("Mark on"));
1173                 break;
1174
1175         case LFUN_SETMARK:
1176                 cur.clearSelection();
1177                 if (cur.mark()) {
1178                         cur.message(N_("Mark removed"));
1179                 } else {
1180                         cur.mark() = true;
1181                         cur.message(N_("Mark set"));
1182                 }
1183                 cur.resetAnchor();
1184                 update();
1185                 break;
1186
1187         case LFUN_UNKNOWN_ACTION:
1188                 cur.errorMessage(N_("Unknown function!"));
1189                 break;
1190
1191         default:
1192                 return false;
1193         }
1194
1195         return true;
1196 }
1197
1198
1199 bool BufferView::Pimpl::ChangeInsets(InsetBase::Code code,
1200                                      string const & from, string const & to)
1201 {
1202         bool need_update = false;
1203         CursorSlice cur = bv_->text()->cursor();
1204
1205         ParIterator end = bv_->buffer()->par_iterator_end();
1206         for (ParIterator it = bv_->buffer()->par_iterator_begin();
1207              it != end; ++it) {
1208                 bool changed_inset = false;
1209                 for (InsetList::iterator it2 = it->insetlist.begin();
1210                      it2 != it->insetlist.end(); ++it2) {
1211                         if (it2->inset->lyxCode() == code) {
1212                                 InsetCommand * inset = static_cast<InsetCommand *>(it2->inset);
1213                                 if (inset->getContents() == from) {
1214                                         inset->setContents(to);
1215                                         changed_inset = true;
1216                                 }
1217                         }
1218                 }
1219                 if (changed_inset) {
1220                         need_update = true;
1221
1222                         // FIXME
1223
1224                         // The test it.size() == 1 was needed to prevent crashes.
1225                         // How to set the cursor correctly when it.size() > 1 ??
1226                         if (it.size() == 1) {
1227                                 bv_->text()->setCursorIntern(bv_->text()->parOffset(it.pit()), 0);
1228                                 bv_->text()->redoParagraph(bv_->text()->cursorPar());
1229                         }
1230                 }
1231         }
1232         bv_->text()->setCursorIntern(cur.par(), cur.pos());
1233         return need_update;
1234 }