src/BufferView_pimpl.C

   1 /**
   2  * \file BufferView_pimpl.C
   3  * Copyright 2002 the LyX Team
   4  * Read the file COPYING
   5  *
   6  * \author Lars Gullik Bjønnes
   7  * \author various
   8  */
   9
  10 #include <config.h>
  11
  12 #include "BufferView_pimpl.h"
  13 #include "bufferlist.h"
  14 #include "buffer.h"
  15 #include "buffer_funcs.h"
  16 #include "bufferview_funcs.h"
  17 #include "lfuns.h"
  18 #include "debug.h"
  19 #include "factory.h"
  20 #include "FloatList.h"
  21 #include "funcrequest.h"
  22 #include "gettext.h"
  23 #include "intl.h"
  24 #include "iterators.h"
  25 #include "Lsstream.h"
  26 #include "lyx_cb.h" // added for Dispatch functions
  27 #include "lyx_main.h"
  28 #include "lyxfind.h"
  29 #include "lyxfunc.h"
  30 #include "lyxtext.h"
  31 #include "lyxrc.h"
  32 #include "lyxrow.h"
  33 #include "lastfiles.h"
  34 #include "paragraph.h"
  35 #include "ParagraphParameters.h"
  36 #include "TextCache.h"
  37 #include "undo_funcs.h"
  38
  39 #include "insets/insetfloatlist.h"
  40 #include "insets/insetgraphics.h"
  41 #include "insets/insetinclude.h"
  42 #include "insets/insetref.h"
  43 #include "insets/insettext.h"
  44
  45 #include "frontends/Alert.h"
  46 #include "frontends/Dialogs.h"
  47 #include "frontends/FileDialog.h"
  48 #include "frontends/LyXView.h"
  49 #include "frontends/LyXScreenFactory.h"
  50 #include "frontends/mouse_state.h"
  51 #include "frontends/screen.h"
  52 #include "frontends/WorkArea.h"
  53 #include "frontends/WorkAreaFactory.h"
  54
  55 #include "mathed/formulabase.h"
  56
  57 #include "graphics/Previews.h"
  58
  59 #include "support/LAssert.h"
  60 #include "support/tostr.h"
  61 #include "support/filetools.h"
  62
  63 #include <boost/bind.hpp>
  64 #include <boost/signals/connection.hpp>
  65
  66 #include <unistd.h>
  67 #include <sys/wait.h>
  68
  69
  70 using std::vector;
  71 using std::find_if;
  72 using std::find;
  73 using std::pair;
  74 using std::endl;
  75 using std::make_pair;
  76 using std::min;
  77
  78 using lyx::pos_type;
  79 using namespace lyx::support;
  80 using namespace bv_funcs;
  81
  82 extern BufferList bufferlist;
  83
  84
  85 namespace {
  86
  87 unsigned int const saved_positions_num = 20;
  88
  89 // All the below connection objects are needed because of a bug in some
  90 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
  91 // to these connections we avoid a segfault upon startup, and also at exit.
  92 // (Lgb)
  93
  94 boost::signals::connection dispatchcon;
  95 boost::signals::connection timecon;
  96 boost::signals::connection doccon;
  97 boost::signals::connection resizecon;
  98 boost::signals::connection kpresscon;
  99 boost::signals::connection selectioncon;
 100 boost::signals::connection lostcon;
 101
 102
 103 } // anon namespace
 104
 105
 106 BufferView::Pimpl::Pimpl(BufferView * bv, LyXView * owner,
 107              int xpos, int ypos, int width, int height)
 108         : bv_(bv), owner_(owner), buffer_(0), cursor_timeout(400),
 109           using_xterm_cursor(false)
 110 {
 111         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 112         screen_.reset(LyXScreenFactory::create(workarea()));
 113
 114         // Setup the signals
 115         doccon = workarea().scrollDocView
 116                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 117         resizecon = workarea().workAreaResize
 118                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 119         dispatchcon = workarea().dispatch
 120                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 121         kpresscon = workarea().workAreaKeyPress
 122                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 123         selectioncon = workarea().selectionRequested
 124                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 125         lostcon = workarea().selectionLost
 126                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 127
 128         timecon = cursor_timeout.timeout
 129                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 130         cursor_timeout.start();
 131         saved_positions.resize(saved_positions_num);
 132 }
 133
 134
 135 void BufferView::Pimpl::addError(ErrorItem const & ei)
 136 {
 137         errorlist_.push_back(ei);
 138 }
 139
 140
 141 void BufferView::Pimpl::showReadonly(bool)
 142 {
 143         owner_->updateWindowTitle();
 144         owner_->getDialogs().updateBufferDependent(false);
 145 }
 146
 147
 148 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 149 {
 150         if (errorConnection_.connected())
 151                 disconnectBuffer();
 152
 153         errorConnection_ = buf.error.connect(boost::bind(&BufferView::Pimpl::addError, this, _1));
 154         messageConnection_ = buf.message.connect(boost::bind(&LyXView::message, owner_, _1));
 155         busyConnection_ = buf.busy.connect(boost::bind(&LyXView::busy, owner_, _1));
 156         titleConnection_ = buf.updateTitles.connect(boost::bind(&LyXView::updateWindowTitle, owner_));
 157         timerConnection_ = buf.resetAutosaveTimers.connect(boost::bind(&LyXView::resetAutosaveTimer, owner_));
 158         readonlyConnection_ = buf.readonly.connect(boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 159 }
 160
 161
 162 void BufferView::Pimpl::disconnectBuffer()
 163 {
 164         errorConnection_.disconnect();
 165         messageConnection_.disconnect();
 166         busyConnection_.disconnect();
 167         titleConnection_.disconnect();
 168         timerConnection_.disconnect();
 169         readonlyConnection_.disconnect();
 170 }
 171
 172
 173 bool BufferView::Pimpl::newFile(string const & filename,
 174                                 string const & tname,
 175                                 bool isNamed)
 176 {
 177         Buffer * b = ::newFile(filename, tname, isNamed);
 178         buffer(b);
 179         return true;
 180 }
 181
 182
 183 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 184 {
 185         // get absolute path of file and add ".lyx" to the filename if
 186         // necessary
 187         string s = FileSearch(string(), filename, "lyx");
 188         if (s.empty()) {
 189                 s = filename;
 190         }
 191
 192         // file already open?
 193         if (bufferlist.exists(s)) {
 194                 string const file = MakeDisplayPath(s, 20);
 195                 string text = bformat(_("The document %1$s is already "
 196                                         "loaded.\n\nDo you want to revert "
 197                                         "to the saved version?"), file);
 198                 int const ret = Alert::prompt(_("Revert to saved document?"),
 199                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 200
 201                 if (ret != 0) {
 202                         buffer(bufferlist.getBuffer(s));
 203                         return true;
 204                 } else {
 205                         // FIXME: should be LFUN_REVERT
 206                         if (!bufferlist.close(bufferlist.getBuffer(s), false))
 207                                 return false;
 208                         // Fall through to new load. (Asger)
 209                 }
 210         }
 211         Buffer * b = bufferlist.newBuffer(s);
 212
 213         connectBuffer(*b);
 214
 215         if (! ::loadLyXFile(b, s)) {
 216                 bufferlist.release(b);
 217                 string text = bformat(_("The document %1$s does not yet "
 218                                         "exist.\n\nDo you want to create "
 219                                         "a new document?"), s);
 220                 int const ret = Alert::prompt(_("Create new document?"),
 221                          text, 0, 1, _("&Create"), _("Cancel"));
 222
 223                 if (ret != 0)
 224                         return false;
 225         }
 226
 227         buffer(b);
 228
 229         if (tolastfiles)
 230                 lastfiles->newFile(b->fileName());
 231
 232         bv_->showErrorList(_("Parse"));
 233
 234         return true;
 235 }
 236
 237
 238 WorkArea & BufferView::Pimpl::workarea() const
 239 {
 240         return *workarea_.get();
 241 }
 242
 243
 244 LyXScreen & BufferView::Pimpl::screen() const
 245 {
 246         return *screen_.get();
 247 }
 248
 249
 250 Painter & BufferView::Pimpl::painter() const
 251 {
 252         return workarea().getPainter();
 253 }
 254
 255
 256 void BufferView::Pimpl::buffer(Buffer * b)
 257 {
 258         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 259                             << b << ')' << endl;
 260         if (buffer_) {
 261                 disconnectBuffer();
 262                 // Put the old text into the TextCache, but
 263                 // only if the buffer is still loaded.
 264                 // Also set the owner of the test to 0
 265                 //              bv_->text->owner(0);
 266                 textcache.add(buffer_, workarea().workWidth(), bv_->text);
 267                 if (lyxerr.debugging())
 268                         textcache.show(lyxerr, "BufferView::buffer");
 269
 270                 bv_->text = 0;
 271         }
 272
 273         // set current buffer
 274         buffer_ = b;
 275
 276         // if we're quitting lyx, don't bother updating stuff
 277         if (quitting)
 278                 return;
 279
 280         // if we are closing the buffer, use the first buffer as current
 281         if (!buffer_) {
 282                 buffer_ = bufferlist.first();
 283         }
 284
 285         if (buffer_) {
 286                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 287                 connectBuffer(*buffer_);
 288
 289                 // If we don't have a text object for this, we make one
 290                 if (bv_->text == 0) {
 291                         resizeCurrentBuffer();
 292                 }
 293
 294                 // FIXME: needed when ?
 295                 bv_->text->top_y(screen().topCursorVisible(bv_->text));
 296
 297                 // Buffer-dependent dialogs should be updated or
 298                 // hidden. This should go here because some dialogs (eg ToC)
 299                 // require bv_->text.
 300                 owner_->getDialogs().updateBufferDependent(true);
 301         } else {
 302                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 303                 owner_->getDialogs().hideBufferDependent();
 304
 305                 // Also remove all remaining text's from the testcache.
 306                 // (there should not be any!) (if there is any it is a
 307                 // bug!)
 308                 if (lyxerr.debugging())
 309                         textcache.show(lyxerr, "buffer delete all");
 310                 textcache.clear();
 311         }
 312
 313         repaint();
 314         updateScrollbar();
 315         owner_->updateMenubar();
 316         owner_->updateToolbar();
 317         owner_->updateLayoutChoice();
 318         owner_->updateWindowTitle();
 319
 320         if (buffer_) {
 321                 // Don't forget to update the Layout
 322                 string const layoutname =
 323                         bv_->text->cursor.par()->layout()->name();
 324                 owner_->setLayout(layoutname);
 325         }
 326
 327         if (grfx::Previews::activated() && buffer_)
 328                 grfx::Previews::get().generateBufferPreviews(*buffer_);
 329 }
 330
 331
 332 bool BufferView::Pimpl::fitCursor()
 333 {
 334         bool ret;
 335
 336         if (bv_->theLockingInset()) {
 337                 bv_->theLockingInset()->fitInsetCursor(bv_);
 338                 ret = true;
 339         } else {
 340                 ret = screen().fitCursor(bv_->text, bv_);
 341         }
 342
 343         dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
 344
 345         // We need to always update, in case we did a
 346         // paste and we stayed anchored to a row, but
 347         // the actual height of the doc changed ...
 348         updateScrollbar();
 349         return ret;
 350 }
 351
 352
 353 void BufferView::Pimpl::redoCurrentBuffer()
 354 {
 355         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 356         if (buffer_ && bv_->text) {
 357                 resizeCurrentBuffer();
 358                 updateScrollbar();
 359                 owner_->updateLayoutChoice();
 360                 repaint();
 361         }
 362 }
 363
 364
 365 int BufferView::Pimpl::resizeCurrentBuffer()
 366 {
 367         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 368
 369         ParagraphList::iterator par;
 370         ParagraphList::iterator selstartpar;
 371         ParagraphList::iterator selendpar;
 372         UpdatableInset * the_locking_inset = 0;
 373
 374         pos_type pos = 0;
 375         pos_type selstartpos = 0;
 376         pos_type selendpos = 0;
 377         bool selection = false;
 378         bool mark_set  = false;
 379
 380         owner_->busy(true);
 381
 382         owner_->message(_("Formatting document..."));
 383
 384         if (bv_->text) {
 385                 par = bv_->text->cursor.par();
 386                 pos = bv_->text->cursor.pos();
 387                 selstartpar = bv_->text->selection.start.par();
 388                 selstartpos = bv_->text->selection.start.pos();
 389                 selendpar = bv_->text->selection.end.par();
 390                 selendpos = bv_->text->selection.end.pos();
 391                 selection = bv_->text->selection.set();
 392                 mark_set = bv_->text->selection.mark();
 393                 the_locking_inset = bv_->theLockingInset();
 394                 resizeInsets(bv_);
 395                 bv_->text->fullRebreak();
 396                 update();
 397         } else {
 398                 lyxerr << "text not available!\n";
 399                 // See if we have a text in TextCache that fits
 400                 // the new buffer_ with the correct width.
 401                 bv_->text = textcache.findFit(buffer_, workarea().workWidth());
 402                 if (bv_->text) {
 403                         lyxerr << "text in cache!\n";
 404                         if (lyxerr.debugging()) {
 405                                 lyxerr << "Found a LyXText that fits:\n";
 406                                 textcache.show(lyxerr, make_pair(buffer_, make_pair(workarea().workWidth(), bv_->text)));
 407                         }
 408                         // Set the owner of the newly found text
 409                         //      bv_->text->owner(bv_);
 410                         if (lyxerr.debugging())
 411                                 textcache.show(lyxerr, "resizeCurrentBuffer");
 412
 413                         resizeInsets(bv_);
 414                 } else {
 415                         lyxerr << "no text in cache!\n";
 416                         bv_->text = new LyXText(bv_);
 417                         resizeInsets(bv_);
 418                         bv_->text->init(bv_);
 419                 }
 420
 421                 par = bv_->text->ownerParagraphs().end();
 422                 selstartpar = bv_->text->ownerParagraphs().end();
 423                 selendpar = bv_->text->ownerParagraphs().end();
 424         }
 425
 426         if (par != bv_->text->ownerParagraphs().end()) {
 427                 bv_->text->selection.set(true);
 428                 // At this point just to avoid the Delete-Empty-Paragraph-
 429                 // Mechanism when setting the cursor.
 430                 bv_->text->selection.mark(mark_set);
 431                 if (selection) {
 432                         bv_->text->setCursor(selstartpar, selstartpos);
 433                         bv_->text->selection.cursor = bv_->text->cursor;
 434                         bv_->text->setCursor(selendpar, selendpos);
 435                         bv_->text->setSelection();
 436                         bv_->text->setCursor(par, pos);
 437                 } else {
 438                         bv_->text->setCursor(par, pos);
 439                         bv_->text->selection.cursor = bv_->text->cursor;
 440                         bv_->text->selection.set(false);
 441                 }
 442                 // remake the inset locking
 443                 bv_->theLockingInset(the_locking_inset);
 444         }
 445
 446         bv_->text->top_y(screen().topCursorVisible(bv_->text));
 447
 448         switchKeyMap();
 449         owner_->busy(false);
 450
 451         // reset the "Formatting..." message
 452         owner_->clearMessage();
 453
 454         updateScrollbar();
 455
 456         return 0;
 457 }
 458
 459
 460 void BufferView::Pimpl::repaint()
 461 {
 462         // Regenerate the screen.
 463         screen().redraw(bv_->text, bv_);
 464 }
 465
 466
 467 void BufferView::Pimpl::updateScrollbar()
 468 {
 469         if (!bv_->text) {
 470                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 471                 workarea().setScrollbarParams(0, 0, 0);
 472                 return;
 473         }
 474
 475         LyXText const & t = *bv_->text;
 476
 477         lyxerr[Debug::GUI] << "Updating scrollbar: h " << t.height << ", top_y() "
 478                 << t.top_y() << ", default height " << defaultRowHeight() << endl;
 479
 480         workarea().setScrollbarParams(t.height, t.top_y(), defaultRowHeight());
 481 }
 482
 483
 484 void BufferView::Pimpl::scrollDocView(int value)
 485 {
 486         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 487
 488         if (!buffer_)
 489                 return;
 490
 491         screen().hideCursor();
 492
 493         screen().draw(bv_->text, bv_, value);
 494
 495         if (!lyxrc.cursor_follows_scrollbar)
 496                 return;
 497
 498         LyXText * vbt = bv_->text;
 499
 500         int const height = defaultRowHeight();
 501         int const first = static_cast<int>((bv_->text->top_y() + height));
 502         int const last = static_cast<int>((bv_->text->top_y() + workarea().workHeight() - height));
 503
 504         if (vbt->cursor.y() < first)
 505                 vbt->setCursorFromCoordinates(0, first);
 506         else if (vbt->cursor.y() > last)
 507                 vbt->setCursorFromCoordinates(0, last);
 508
 509         owner_->updateLayoutChoice();
 510 }
 511
 512
 513 void BufferView::Pimpl::scroll(int lines)
 514 {
 515         if (!buffer_) {
 516                 return;
 517         }
 518
 519         LyXText const * t = bv_->text;
 520         int const line_height = defaultRowHeight();
 521
 522         // The new absolute coordinate
 523         int new_top_y = t->top_y() + lines * line_height;
 524
 525         // Restrict to a valid value
 526         new_top_y = std::min(t->height - 4 * line_height, new_top_y);
 527         new_top_y = std::max(0, new_top_y);
 528
 529         scrollDocView(new_top_y);
 530
 531         // Update the scrollbar.
 532         workarea().setScrollbarParams(t->height, t->top_y(), defaultRowHeight());
 533 }
 534
 535
 536 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 537                                          key_modifier::state state)
 538 {
 539         bv_->owner()->getLyXFunc().processKeySym(key, state);
 540
 541         /* This is perhaps a bit of a hack. When we move
 542          * around, or type, it's nice to be able to see
 543          * the cursor immediately after the keypress. So
 544          * we reset the toggle timeout and force the visibility
 545          * of the cursor. Note we cannot do this inside
 546          * dispatch() itself, because that's called recursively.
 547          */
 548         if (available()) {
 549                 cursor_timeout.restart();
 550                 screen().showCursor(*bv_);
 551         }
 552 }
 553
 554
 555 void BufferView::Pimpl::selectionRequested()
 556 {
 557         static string sel;
 558
 559         if (!available())
 560                 return;
 561
 562         LyXText * text = bv_->getLyXText();
 563
 564         if (text->selection.set() &&
 565                 (!bv_->text->xsel_cache.set() ||
 566                  text->selection.start != bv_->text->xsel_cache.start ||
 567                  text->selection.end != bv_->text->xsel_cache.end))
 568         {
 569                 bv_->text->xsel_cache = text->selection;
 570                 sel = text->selectionAsString(bv_->buffer(), false);
 571         } else if (!text->selection.set()) {
 572                 sel = string();
 573                 bv_->text->xsel_cache.set(false);
 574         }
 575         if (!sel.empty()) {
 576                 workarea().putClipboard(sel);
 577         }
 578 }
 579
 580
 581 void BufferView::Pimpl::selectionLost()
 582 {
 583         if (available()) {
 584                 screen().hideCursor();
 585                 toggleSelection();
 586                 bv_->getLyXText()->clearSelection();
 587                 bv_->text->xsel_cache.set(false);
 588         }
 589 }
 590
 591
 592 void BufferView::Pimpl::workAreaResize()
 593 {
 594         static int work_area_width;
 595         static int work_area_height;
 596
 597         bool const widthChange = workarea().workWidth() != work_area_width;
 598         bool const heightChange = workarea().workHeight() != work_area_height;
 599
 600         // update from work area
 601         work_area_width = workarea().workWidth();
 602         work_area_height = workarea().workHeight();
 603
 604         if (buffer_ != 0) {
 605                 if (widthChange) {
 606                         // The visible LyXView need a resize
 607                         resizeCurrentBuffer();
 608
 609                         // Remove all texts from the textcache
 610                         // This is not _really_ what we want to do. What
 611                         // we really want to do is to delete in textcache
 612                         // that does not have a BufferView with matching
 613                         // width, but as long as we have only one BufferView
 614                         // deleting all gives the same result.
 615                         if (lyxerr.debugging())
 616                                 textcache.show(lyxerr, "Expose delete all");
 617                         textcache.clear();
 618                         // FIXME: this is already done in resizeCurrentBuffer() ??
 619                         resizeInsets(bv_);
 620                 } else if (heightChange) {
 621                         // fitCursor() ensures we don't jump back
 622                         // to the start of the document on vertical
 623                         // resize
 624                         fitCursor();
 625                 }
 626         }
 627
 628         if (widthChange || heightChange) {
 629                 repaint();
 630         }
 631
 632         // always make sure that the scrollbar is sane.
 633         updateScrollbar();
 634         owner_->updateLayoutChoice();
 635         return;
 636 }
 637
 638
 639 void BufferView::Pimpl::update()
 640 {
 641         if (!bv_->theLockingInset() || !bv_->theLockingInset()->nodraw()) {
 642                 screen().update(*bv_);
 643                 bv_->text->clearPaint();
 644         }
 645 }
 646
 647
 648 void BufferView::Pimpl::update(LyXText * text, BufferView::UpdateCodes f)
 649 {
 650         if (!text->selection.set() && (f & SELECT)) {
 651                 text->selection.cursor = text->cursor;
 652         }
 653
 654         text->partialRebreak();
 655
 656         if (text->inset_owner) {
 657                 text->inset_owner->setUpdateStatus(bv_, InsetText::NONE);
 658                 updateInset(text->inset_owner);
 659         } else {
 660                 update();
 661         }
 662 }
 663
 664
 665 void BufferView::Pimpl::update(BufferView::UpdateCodes f)
 666 {
 667         LyXText * text = bv_->text;
 668
 669         if (!text->selection.set() && (f & SELECT)) {
 670                 text->selection.cursor = text->cursor;
 671         }
 672
 673         text->partialRebreak();
 674
 675         if (text->inset_owner) {
 676                 text->inset_owner->setUpdateStatus(bv_, InsetText::NONE);
 677                 updateInset(text->inset_owner);
 678         } else {
 679                 update();
 680         }
 681 }
 682
 683
 684 // Callback for cursor timer
 685 void BufferView::Pimpl::cursorToggle()
 686 {
 687         if (!buffer_) {
 688                 cursor_timeout.restart();
 689                 return;
 690         }
 691
 692         screen().toggleCursor(*bv_);
 693
 694         cursor_timeout.restart();
 695 }
 696
 697
 698 bool BufferView::Pimpl::available() const
 699 {
 700         if (buffer_ && bv_->text)
 701                 return true;
 702         return false;
 703 }
 704
 705
 706 Change const BufferView::Pimpl::getCurrentChange()
 707 {
 708         if (!bv_->buffer()->params.tracking_changes)
 709                 return Change(Change::UNCHANGED);
 710
 711         LyXText * t(bv_->getLyXText());
 712
 713         if (!t->selection.set())
 714                 return Change(Change::UNCHANGED);
 715
 716         LyXCursor const & cur(t->selection.start);
 717         return cur.par()->lookupChangeFull(cur.pos());
 718 }
 719
 720
 721 void BufferView::Pimpl::beforeChange(LyXText * text)
 722 {
 723         toggleSelection();
 724         text->clearSelection();
 725 }
 726
 727
 728 void BufferView::Pimpl::savePosition(unsigned int i)
 729 {
 730         if (i >= saved_positions_num)
 731                 return;
 732         saved_positions[i] = Position(buffer_->fileName(),
 733                                       bv_->text->cursor.par()->id(),
 734                                       bv_->text->cursor.pos());
 735         if (i > 0)
 736                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 737 }
 738
 739
 740 void BufferView::Pimpl::restorePosition(unsigned int i)
 741 {
 742         if (i >= saved_positions_num)
 743                 return;
 744
 745         string const fname = saved_positions[i].filename;
 746
 747         beforeChange(bv_->text);
 748
 749         if (fname != buffer_->fileName()) {
 750                 Buffer * b;
 751                 if (bufferlist.exists(fname))
 752                         b = bufferlist.getBuffer(fname);
 753                 else {
 754                         b = bufferlist.newBuffer(fname);
 755                         ::loadLyXFile(b, fname); // don't ask, just load it
 756                 }
 757                 if (b != 0)
 758                         buffer(b);
 759         }
 760
 761         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 762         if (par == buffer_->par_iterator_end())
 763                 return;
 764
 765         bv_->text->setCursor(par.pit(),
 766                              min(par->size(), saved_positions[i].par_pos));
 767
 768         update(BufferView::SELECT);
 769         if (i > 0)
 770                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 771 }
 772
 773
 774 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 775 {
 776         if (i >= saved_positions_num)
 777                 return false;
 778
 779         return !saved_positions[i].filename.empty();
 780 }
 781
 782
 783 void BufferView::Pimpl::switchKeyMap()
 784 {
 785         if (!lyxrc.rtl_support)
 786                 return;
 787
 788         LyXText * text = bv_->getLyXText();
 789         if (text->real_current_font.isRightToLeft()
 790             && !(bv_->theLockingInset()
 791                  && bv_->theLockingInset()->lyxCode() == Inset::ERT_CODE))
 792         {
 793                 if (owner_->getIntl().keymap == Intl::PRIMARY)
 794                         owner_->getIntl().KeyMapSec();
 795         } else {
 796                 if (owner_->getIntl().keymap == Intl::SECONDARY)
 797                         owner_->getIntl().KeyMapPrim();
 798         }
 799 }
 800
 801
 802 void BufferView::Pimpl::insetUnlock()
 803 {
 804         if (bv_->theLockingInset()) {
 805                 bv_->theLockingInset()->insetUnlock(bv_);
 806                 bv_->theLockingInset(0);
 807                 finishUndo();
 808         }
 809 }
 810
 811
 812 void BufferView::Pimpl::toggleSelection(bool b)
 813 {
 814         if (bv_->theLockingInset())
 815                 bv_->theLockingInset()->toggleSelection(bv_, b);
 816         screen().toggleSelection(bv_->text, bv_, b);
 817 }
 818
 819
 820 void BufferView::Pimpl::toggleToggle()
 821 {
 822         screen().toggleToggle(bv_->text, bv_);
 823 }
 824
 825
 826 void BufferView::Pimpl::center()
 827 {
 828         LyXText * t = bv_->text;
 829
 830         beforeChange(t);
 831         int const half_height = workarea().workHeight() / 2;
 832         int new_y = 0;
 833
 834         if (t->cursor.y() > half_height) {
 835                 new_y = t->cursor.y() - half_height;
 836         }
 837
 838         // FIXME: look at this comment again ...
 839
 840         // FIXME: can we do this w/o calling screen directly ?
 841         // This updates top_y() but means the fitCursor() call
 842         // from the update(FITCUR) doesn't realise that we might
 843         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 844         // the scrollbar to be updated as it should, so we have
 845         // to do it manually. Any operation that does a center()
 846         // and also might have moved top_y() must make sure to call
 847         // updateScrollbar() currently. Never mind that this is a
 848         // pretty obfuscated way of updating t->top_y()
 849         screen().draw(t, bv_, new_y);
 850
 851         update(BufferView::SELECT);
 852 }
 853
 854
 855 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 856 {
 857         workarea().putClipboard(stuff);
 858 }
 859
 860
 861 /*
 862  * Dispatch functions for actions which can be valid for BufferView->text
 863  * and/or InsetText->text!!!
 864  */
 865
 866
 867 Inset * BufferView::Pimpl::getInsetByCode(Inset::Code code)
 868 {
 869 #if 0
 870         LyXCursor cursor = bv_->getLyXText()->cursor;
 871         Buffer::inset_iterator it =
 872                 find_if(Buffer::inset_iterator(
 873                         cursor.par(), cursor.pos()),
 874                         buffer_->inset_iterator_end(),
 875                         lyx::compare_memfun(&Inset::lyxCode, code));
 876         return it != buffer_->inset_iterator_end() ? (*it) : 0;
 877 #else
 878         // Ok, this is a little bit too brute force but it
 879         // should work for now. Better infrastructure is comming. (Lgb)
 880
 881         Buffer * b = bv_->buffer();
 882         LyXCursor cursor = bv_->getLyXText()->cursor;
 883
 884         Buffer::inset_iterator beg = b->inset_iterator_begin();
 885         Buffer::inset_iterator end = b->inset_iterator_end();
 886
 887         bool cursor_par_seen = false;
 888
 889         for (; beg != end; ++beg) {
 890                 if (beg.getPar() == cursor.par()) {
 891                         cursor_par_seen = true;
 892                 }
 893                 if (cursor_par_seen) {
 894                         if (beg.getPar() == cursor.par()
 895                             && beg.getPos() >= cursor.pos()) {
 896                                 break;
 897                         } else if (beg.getPar() != cursor.par()) {
 898                                 break;
 899                         }
 900                 }
 901
 902         }
 903         if (beg != end) {
 904                 // Now find the first inset that matches code.
 905                 for (; beg != end; ++beg) {
 906                         if (beg->lyxCode() == code) {
 907                                 return &(*beg);
 908                         }
 909                 }
 910         }
 911         return 0;
 912 #endif
 913 }
 914
 915
 916 void BufferView::Pimpl::MenuInsertLyXFile(string const & filen)
 917 {
 918         string filename = filen;
 919
 920         if (filename.empty()) {
 921                 // Launch a file browser
 922                 string initpath = lyxrc.document_path;
 923
 924                 if (available()) {
 925                         string const trypath = owner_->buffer()->filePath();
 926                         // If directory is writeable, use this as default.
 927                         if (IsDirWriteable(trypath))
 928                                 initpath = trypath;
 929                 }
 930
 931                 FileDialog fileDlg(_("Select LyX document to insert"),
 932                         LFUN_FILE_INSERT,
 933                         make_pair(string(_("Documents|#o#O")),
 934                                   string(lyxrc.document_path)),
 935                         make_pair(string(_("Examples|#E#e")),
 936                                   string(AddPath(system_lyxdir, "examples"))));
 937
 938                 FileDialog::Result result =
 939                         fileDlg.open(initpath,
 940                                        _("*.lyx| LyX Documents (*.lyx)"));
 941
 942                 if (result.first == FileDialog::Later)
 943                         return;
 944
 945                 filename = result.second;
 946
 947                 // check selected filename
 948                 if (filename.empty()) {
 949                         owner_->message(_("Canceled."));
 950                         return;
 951                 }
 952         }
 953
 954         // get absolute path of file and add ".lyx" to the filename if
 955         // necessary
 956         filename = FileSearch(string(), filename, "lyx");
 957
 958         string const disp_fn = MakeDisplayPath(filename);
 959         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 960         if (bv_->insertLyXFile(filename))
 961                 owner_->message(bformat(_("Document %1$s inserted."),
 962                                         disp_fn));
 963         else
 964                 owner_->message(bformat(_("Could not insert document %1$s"),
 965                                         disp_fn));
 966
 967 #warning remove this if update() is gone
 968         bv_->text->fullRebreak();
 969 }
 970
 971
 972 void BufferView::Pimpl::trackChanges()
 973 {
 974         Buffer * buf(bv_->buffer());
 975         bool const tracking(buf->params.tracking_changes);
 976
 977         if (!tracking) {
 978                 ParIterator const end = buf->par_iterator_end();
 979                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 980                         it->trackChanges();
 981                 buf->params.tracking_changes = true;
 982
 983                 // we cannot allow undos beyond the freeze point
 984                 buf->undostack.clear();
 985         } else {
 986                 update(BufferView::SELECT);
 987                 bv_->text->setCursor(buf->paragraphs.begin(), 0);
 988 #warning changes FIXME
 989                 //moveCursorUpdate(false);
 990
 991                 bool found = lyxfind::findNextChange(bv_);
 992                 if (found) {
 993                         owner_->getDialogs().show("changes");
 994                         return;
 995                 }
 996
 997                 ParIterator const end = buf->par_iterator_end();
 998                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 999                         it->untrackChanges();
1000                 buf->params.tracking_changes = false;
1001         }
1002
1003         buf->redostack.clear();
1004 }
1005
1006
1007 // Doesn't go through lyxfunc, so we need to update the
1008 // layout choice etc. ourselves
1009 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & ev_in)
1010 {
1011         // e.g. Qt mouse press when no buffer
1012         if (!available())
1013                 return false;
1014
1015         screen().hideCursor();
1016
1017         // Make sure that the cached BufferView is correct.
1018         FuncRequest ev = ev_in;
1019         ev.setView(bv_);
1020
1021         bool const res = dispatch(ev);
1022
1023         // see workAreaKeyPress
1024         cursor_timeout.restart();
1025         screen().showCursor(*bv_);
1026
1027         // FIXME: we should skip these when selecting
1028         bv_->owner()->updateLayoutChoice();
1029         bv_->owner()->updateToolbar();
1030         bv_->fitCursor();
1031
1032         // slight hack: this is only called currently when
1033         // we clicked somewhere, so we force through the display
1034         // of the new status here.
1035         bv_->owner()->clearMessage();
1036
1037         return res;
1038 }
1039
1040
1041 bool BufferView::Pimpl::dispatch(FuncRequest const & ev_in)
1042 {
1043         // Make sure that the cached BufferView is correct.
1044         FuncRequest ev = ev_in;
1045         ev.setView(bv_);
1046
1047         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
1048                 << " action[" << ev.action << ']'
1049                 << " arg[" << ev.argument << ']'
1050                 << " x[" << ev.x << ']'
1051                 << " y[" << ev.y << ']'
1052                 << " button[" << ev.button() << ']'
1053                 << endl;
1054
1055         LyXTextClass const & tclass = buffer_->params.getLyXTextClass();
1056
1057         switch (ev.action) {
1058
1059         case LFUN_SCROLL_INSET:
1060                 // this is not handled here as this function is only active
1061                 // if we have a locking_inset and that one is (or contains)
1062                 // a tabular-inset
1063                 break;
1064
1065         case LFUN_FILE_INSERT:
1066                 MenuInsertLyXFile(ev.argument);
1067                 break;
1068
1069         case LFUN_FILE_INSERT_ASCII_PARA:
1070                 InsertAsciiFile(bv_, ev.argument, true);
1071                 break;
1072
1073         case LFUN_FILE_INSERT_ASCII:
1074                 InsertAsciiFile(bv_, ev.argument, false);
1075                 break;
1076
1077         case LFUN_LANGUAGE:
1078                 lang(bv_, ev.argument);
1079                 switchKeyMap();
1080                 owner_->view_state_changed();
1081                 break;
1082
1083         case LFUN_EMPH:
1084                 emph(bv_);
1085                 owner_->view_state_changed();
1086                 break;
1087
1088         case LFUN_BOLD:
1089                 bold(bv_);
1090                 owner_->view_state_changed();
1091                 break;
1092
1093         case LFUN_NOUN:
1094                 noun(bv_);
1095                 owner_->view_state_changed();
1096                 break;
1097
1098         case LFUN_CODE:
1099                 code(bv_);
1100                 owner_->view_state_changed();
1101                 break;
1102
1103         case LFUN_SANS:
1104                 sans(bv_);
1105                 owner_->view_state_changed();
1106                 break;
1107
1108         case LFUN_ROMAN:
1109                 roman(bv_);
1110                 owner_->view_state_changed();
1111                 break;
1112
1113         case LFUN_DEFAULT:
1114                 styleReset(bv_);
1115                 owner_->view_state_changed();
1116                 break;
1117
1118         case LFUN_UNDERLINE:
1119                 underline(bv_);
1120                 owner_->view_state_changed();
1121                 break;
1122
1123         case LFUN_FONT_SIZE:
1124                 fontSize(bv_, ev.argument);
1125                 owner_->view_state_changed();
1126                 break;
1127
1128         case LFUN_FONT_STATE:
1129                 owner_->getLyXFunc().setMessage(currentState(bv_));
1130                 break;
1131
1132         case LFUN_INSERT_LABEL: {
1133                 // Try and generate a valid label
1134                 string const contents = ev.argument.empty() ?
1135                         getPossibleLabel(*bv_) : ev.argument;
1136                 InsetCommandParams icp("label", contents);
1137                 string data = InsetCommandMailer::params2string("label", icp);
1138                 owner_->getDialogs().show("label", data, 0);
1139         }
1140         break;
1141
1142         case LFUN_BOOKMARK_SAVE:
1143                 savePosition(strToUnsignedInt(ev.argument));
1144                 break;
1145
1146         case LFUN_BOOKMARK_GOTO:
1147                 restorePosition(strToUnsignedInt(ev.argument));
1148                 break;
1149
1150         case LFUN_REF_GOTO: {
1151                 string label = ev.argument;
1152                 if (label.empty()) {
1153                         InsetRef * inset =
1154                                 static_cast<InsetRef*>(getInsetByCode(Inset::REF_CODE));
1155                         if (inset) {
1156                                 label = inset->getContents();
1157                                 savePosition(0);
1158                         }
1159                 }
1160
1161                 if (!label.empty())
1162                         bv_->gotoLabel(label);
1163         }
1164         break;
1165
1166         // --- accented characters ---------------------------
1167
1168         case LFUN_UMLAUT:
1169         case LFUN_CIRCUMFLEX:
1170         case LFUN_GRAVE:
1171         case LFUN_ACUTE:
1172         case LFUN_TILDE:
1173         case LFUN_CEDILLA:
1174         case LFUN_MACRON:
1175         case LFUN_DOT:
1176         case LFUN_UNDERDOT:
1177         case LFUN_UNDERBAR:
1178         case LFUN_CARON:
1179         case LFUN_SPECIAL_CARON:
1180         case LFUN_BREVE:
1181         case LFUN_TIE:
1182         case LFUN_HUNG_UMLAUT:
1183         case LFUN_CIRCLE:
1184         case LFUN_OGONEK:
1185                 if (ev.argument.empty()) {
1186                         // As always...
1187                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1188                 } else {
1189                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1190                         owner_->getIntl().getTransManager()
1191                                 .TranslateAndInsert(ev.argument[0], bv_->getLyXText());
1192                         update(bv_->getLyXText(), BufferView::SELECT);
1193                 }
1194                 break;
1195
1196         case LFUN_MATH_MACRO:
1197         case LFUN_MATH_DELIM:
1198         case LFUN_INSERT_MATRIX:
1199         case LFUN_INSERT_MATH:
1200         case LFUN_MATH_IMPORT_SELECTION: // Imports LaTeX from the X selection
1201         case LFUN_MATH_DISPLAY:          // Open or create a displayed math inset
1202         case LFUN_MATH_MODE:             // Open or create an inlined math inset
1203                 mathDispatch(ev);
1204                 break;
1205
1206         case LFUN_INSET_APPLY: {
1207                 string const name = ev.getArg(0);
1208
1209                 InsetBase * inset = owner_->getDialogs().getOpenInset(name);
1210                 if (inset) {
1211                         // This works both for 'original' and 'mathed' insets.
1212                         // Note that the localDispatch performs updateInset
1213                         // also.
1214                         FuncRequest fr(bv_, LFUN_INSET_MODIFY, ev.argument);
1215                         inset->localDispatch(fr);
1216                 } else {
1217                         FuncRequest fr(bv_, LFUN_INSET_INSERT, ev.argument);
1218                         dispatch(fr);
1219                 }
1220         }
1221         break;
1222
1223         case LFUN_INSET_INSERT: {
1224                 Inset * inset = createInset(ev);
1225                 if (inset && insertInset(inset)) {
1226                         updateInset(inset);
1227
1228                         string const name = ev.getArg(0);
1229                         if (name == "bibitem") {
1230                                 // We need to do a redraw because the maximum
1231                                 // InsetBibitem width could have changed
1232 #warning please check you mean repaint() not update(),
1233 #warning and whether the repaint() is needed at all
1234                                 bv_->repaint();
1235                                 bv_->fitCursor();
1236                         }
1237                 } else {
1238                         delete inset;
1239                 }
1240         }
1241         break;
1242
1243         case LFUN_FLOAT_LIST:
1244                 if (tclass.floats().typeExist(ev.argument)) {
1245                         Inset * inset = new InsetFloatList(ev.argument);
1246                         if (!insertInset(inset, tclass.defaultLayoutName()))
1247                                 delete inset;
1248                 } else {
1249                         lyxerr << "Non-existent float type: "
1250                                << ev.argument << endl;
1251                 }
1252                 break;
1253
1254         case LFUN_LAYOUT_PARAGRAPH: {
1255                 Paragraph const * par = &*bv_->getLyXText()->cursor.par();
1256                 if (!par)
1257                         break;
1258
1259                 string data;
1260                 params2string(*par, data);
1261
1262                 data = "show\n" + data;
1263                 bv_->owner()->getDialogs().show("paragraph", data);
1264                 break;
1265         }
1266
1267         case LFUN_PARAGRAPH_UPDATE: {
1268                 if (!bv_->owner()->getDialogs().visible("paragraph"))
1269                         break;
1270                 Paragraph const * par = &*bv_->getLyXText()->cursor.par();
1271                 if (!par)
1272                         break;
1273
1274                 string data;
1275                 params2string(*par, data);
1276
1277                 // Will the paragraph accept changes from the dialog?
1278                 Inset * const inset = par->inInset();
1279                 bool const accept =
1280                         !(inset && inset->forceDefaultParagraphs(inset));
1281
1282                 data = "update " + tostr(accept) + '\n' + data;
1283                 bv_->owner()->getDialogs().update("paragraph", data);
1284                 break;
1285         }
1286
1287         case LFUN_PARAGRAPH_APPLY:
1288                 setParagraphParams(*bv_, ev.argument);
1289                 break;
1290
1291         case LFUN_THESAURUS_ENTRY:
1292         {
1293                 string arg = ev.argument;
1294
1295                 if (arg.empty()) {
1296                         arg = bv_->getLyXText()->selectionAsString(buffer_,
1297                                                                    false);
1298
1299                         // FIXME
1300                         if (arg.size() > 100 || arg.empty()) {
1301                                 // Get word or selection
1302                                 bv_->getLyXText()->selectWordWhenUnderCursor(lyx::WHOLE_WORD);
1303                                 arg = bv_->getLyXText()->selectionAsString(buffer_, false);
1304                                 // FIXME: where is getLyXText()->unselect(bv_) ?
1305                         }
1306                 }
1307
1308                 bv_->owner()->getDialogs().show("thesaurus", arg);
1309         }
1310                 break;
1311
1312         case LFUN_TRACK_CHANGES:
1313                 trackChanges();
1314                 break;
1315
1316         case LFUN_MERGE_CHANGES:
1317                 owner_->getDialogs().show("changes");
1318                 break;
1319
1320         case LFUN_ACCEPT_ALL_CHANGES: {
1321                 update(BufferView::SELECT);
1322                 bv_->text->setCursor(bv_->buffer()->paragraphs.begin(), 0);
1323 #warning FIXME changes
1324                 //moveCursorUpdate(false);
1325
1326                 while (lyxfind::findNextChange(bv_)) {
1327                         bv_->getLyXText()->acceptChange();
1328                 }
1329                 update(BufferView::SELECT);
1330                 break;
1331         }
1332
1333         case LFUN_REJECT_ALL_CHANGES: {
1334                 update(BufferView::SELECT);
1335                 bv_->text->setCursor(bv_->buffer()->paragraphs.begin(), 0);
1336 #warning FIXME changes
1337                 //moveCursorUpdate(false);
1338
1339                 while (lyxfind::findNextChange(bv_)) {
1340                         bv_->getLyXText()->rejectChange();
1341                 }
1342                 update(BufferView::SELECT);
1343                 break;
1344         }
1345
1346         case LFUN_ACCEPT_CHANGE: {
1347                 bv_->getLyXText()->acceptChange();
1348                 update(BufferView::SELECT);
1349                 break;
1350         }
1351
1352         case LFUN_REJECT_CHANGE: {
1353                 bv_->getLyXText()->rejectChange();
1354                 update(BufferView::SELECT);
1355                 break;
1356         }
1357
1358         case LFUN_UNKNOWN_ACTION:
1359                 ev.errorMessage(N_("Unknown function!"));
1360                 break;
1361
1362         default:
1363                 return bv_->getLyXText()->dispatch(FuncRequest(ev, bv_));
1364         } // end of switch
1365
1366         return true;
1367 }
1368
1369
1370 bool BufferView::Pimpl::insertInset(Inset * inset, string const & lout)
1371 {
1372         // if we are in a locking inset we should try to insert the
1373         // inset there otherwise this is a illegal function now
1374         if (bv_->theLockingInset()) {
1375                 if (bv_->theLockingInset()->insetAllowed(inset))
1376                         return bv_->theLockingInset()->insertInset(bv_, inset);
1377                 return false;
1378         }
1379
1380         // not quite sure if we want this...
1381         setCursorParUndo(bv_);
1382         freezeUndo();
1383
1384         beforeChange(bv_->text);
1385         if (!lout.empty()) {
1386                 update(BufferView::SELECT);
1387                 bv_->text->breakParagraph(bv_->buffer()->paragraphs);
1388                 update(BufferView::SELECT);
1389
1390                 if (!bv_->text->cursor.par()->empty()) {
1391                         bv_->text->cursorLeft(bv_);
1392
1393                         bv_->text->breakParagraph(bv_->buffer()->paragraphs);
1394                         update(BufferView::SELECT);
1395                 }
1396
1397                 string lres = lout;
1398                 LyXTextClass const & tclass =
1399                         buffer_->params.getLyXTextClass();
1400                 bool hasLayout = tclass.hasLayout(lres);
1401                 string lay = tclass.defaultLayoutName();
1402
1403                 if (hasLayout != false) {
1404                         // layout found
1405                         lay = lres;
1406                 } else {
1407                         // layout not fount using default
1408                         lay = tclass.defaultLayoutName();
1409                 }
1410
1411                 bv_->text->setLayout(lay);
1412
1413                 bv_->text->setParagraph(0, 0,
1414                                    0, 0,
1415                                    VSpace(VSpace::NONE), VSpace(VSpace::NONE),
1416                                    Spacing(),
1417                                    LYX_ALIGN_LAYOUT,
1418                                    string(),
1419                                    0);
1420                 update(BufferView::SELECT);
1421         }
1422
1423         bv_->text->insertInset(inset);
1424         update(BufferView::SELECT);
1425
1426         unFreezeUndo();
1427         return true;
1428 }
1429
1430
1431 void BufferView::Pimpl::updateInset(Inset * inset)
1432 {
1433         if (!inset || !available())
1434                 return;
1435
1436         // first check for locking insets
1437         if (bv_->theLockingInset()) {
1438                 if (bv_->theLockingInset() == inset) {
1439                         if (bv_->text->updateInset(inset)) {
1440                                 update();
1441                                 updateScrollbar();
1442                                 return;
1443                         }
1444                 } else if (bv_->theLockingInset()->updateInsetInInset(bv_, inset)) {
1445                         if (bv_->text->updateInset(bv_->theLockingInset())) {
1446                                 update();
1447                                 updateScrollbar();
1448                                 return;
1449                         }
1450                 }
1451         }
1452
1453         // then check if the inset is a top_level inset (has no owner)
1454         // if yes do the update as always otherwise we have to update the
1455         // toplevel inset where this inset is inside
1456         Inset * tl_inset = inset;
1457         while (tl_inset->owner())
1458                 tl_inset = tl_inset->owner();
1459         if (tl_inset == inset) {
1460                 update(BufferView::UPDATE);
1461                 if (bv_->text->updateInset(inset)) {
1462                         update(BufferView::SELECT);
1463                         return;
1464                 }
1465         } else if (static_cast<UpdatableInset *>(tl_inset)
1466                            ->updateInsetInInset(bv_, inset))
1467         {
1468                 if (bv_->text->updateInset(tl_inset)) {
1469                         update();
1470                         updateScrollbar();
1471                 }
1472         }
1473 }