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