src/BufferView_pimpl.C

   1 /**
   2  * \file BufferView_pimpl.C
   3  * Copyright 2002 the LyX Team
   4  * Read the file COPYING
   5  *
   6  * \author various
   7  */
   8
   9 #include <config.h>
  10
  11 #ifdef __GNUG__
  12 #pragma implementation
  13 #endif
  14
  15 #include "BufferView_pimpl.h"
  16 #include "frontends/WorkArea.h"
  17 #include "frontends/screen.h"
  18 #include "frontends/LyXScreenFactory.h"
  19 #include "frontends/WorkAreaFactory.h"
  20 #include "frontends/Dialogs.h"
  21 #include "frontends/Alert.h"
  22 #include "frontends/FileDialog.h"
  23 #include "frontends/mouse_state.h"
  24 #include "lyxtext.h"
  25 #include "lyxrow.h"
  26 #include "paragraph.h"
  27 #include "frontends/LyXView.h"
  28 #include "commandtags.h"
  29 #include "lyxfunc.h"
  30 #include "debug.h"
  31 #include "bufferview_funcs.h"
  32 #include "TextCache.h"
  33 #include "bufferlist.h"
  34 #include "lyxrc.h"
  35 #include "intl.h"
  36 // added for Dispatch functions
  37 #include "lyx_cb.h"
  38 #include "lyx_main.h"
  39 #include "FloatList.h"
  40 #include "gettext.h"
  41 #include "ParagraphParameters.h"
  42 #include "undo_funcs.h"
  43 #include "funcrequest.h"
  44 #include "iterators.h"
  45 #include "lyxfind.h"
  46
  47 #include "insets/insetbib.h"
  48 #include "insets/insettext.h"
  49 #include "insets/insetlatexaccent.h"
  50 #include "insets/insettoc.h"
  51 #include "insets/insetindex.h"
  52 #include "insets/insetref.h"
  53 #include "insets/insetinclude.h"
  54 #include "insets/insetcite.h"
  55 #include "insets/insetgraphics.h"
  56 #include "insets/insetmarginal.h"
  57 #include "insets/insetfloatlist.h"
  58
  59 #include "mathed/formulabase.h"
  60
  61 #include "graphics/Previews.h"
  62
  63 #include "support/LAssert.h"
  64 #include "support/lstrings.h"
  65 #include "support/filetools.h"
  66
  67 #include <boost/bind.hpp>
  68 #include <boost/signals/connection.hpp>
  69 #include "BoostFormat.h"
  70
  71 #include <unistd.h>
  72 #include <sys/wait.h>
  73
  74
  75 using std::vector;
  76 using std::find_if;
  77 using std::find;
  78 using std::pair;
  79 using std::endl;
  80 using std::make_pair;
  81 using std::min;
  82
  83 using lyx::pos_type;
  84
  85 extern BufferList bufferlist;
  86
  87
  88 namespace {
  89
  90 unsigned int const saved_positions_num = 20;
  91
  92 // All the below connection objects are needed because of a bug in some
  93 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
  94 // to these connections we avoid a segfault upon startup, and also at exit.
  95 // (Lgb)
  96
  97 boost::signals::connection dispatchcon;
  98 boost::signals::connection timecon;
  99 boost::signals::connection doccon;
 100 boost::signals::connection resizecon;
 101 boost::signals::connection kpresscon;
 102 boost::signals::connection selectioncon;
 103 boost::signals::connection lostcon;
 104
 105
 106 } // anon namespace
 107
 108
 109 BufferView::Pimpl::Pimpl(BufferView * bv, LyXView * owner,
 110              int xpos, int ypos, int width, int height)
 111         : bv_(bv), owner_(owner), buffer_(0), cursor_timeout(400),
 112           using_xterm_cursor(false)
 113 {
 114         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 115         screen_.reset(LyXScreenFactory::create(workarea()));
 116
 117         // Setup the signals
 118         doccon = workarea().scrollDocView
 119                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 120         resizecon = workarea().workAreaResize
 121                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 122         dispatchcon = workarea().dispatch
 123                 .connect(boost::bind(&BufferView::Pimpl::dispatch, this, _1));
 124         kpresscon = workarea().workAreaKeyPress
 125                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 126         selectioncon = workarea().selectionRequested
 127                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 128         lostcon = workarea().selectionLost
 129                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 130
 131         timecon = cursor_timeout.timeout
 132                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 133         cursor_timeout.start();
 134         saved_positions.resize(saved_positions_num);
 135 }
 136
 137
 138 WorkArea & BufferView::Pimpl::workarea() const
 139 {
 140         return *workarea_.get();
 141 }
 142
 143
 144 LyXScreen & BufferView::Pimpl::screen() const
 145 {
 146         return *screen_.get();
 147 }
 148
 149
 150 Painter & BufferView::Pimpl::painter() const
 151 {
 152         return workarea().getPainter();
 153 }
 154
 155
 156 void BufferView::Pimpl::buffer(Buffer * b)
 157 {
 158         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 159                             << b << ')' << endl;
 160         if (buffer_) {
 161                 buffer_->delUser(bv_);
 162
 163                 // Put the old text into the TextCache, but
 164                 // only if the buffer is still loaded.
 165                 // Also set the owner of the test to 0
 166                 //              bv_->text->owner(0);
 167                 textcache.add(buffer_, workarea().workWidth(), bv_->text);
 168                 if (lyxerr.debugging())
 169                         textcache.show(lyxerr, "BufferView::buffer");
 170
 171                 bv_->text = 0;
 172         }
 173
 174         // set current buffer
 175         buffer_ = b;
 176
 177         if (bufferlist.getState() == BufferList::CLOSING) return;
 178
 179         // if we are closing the buffer, use the first buffer as current
 180         if (!buffer_) {
 181                 buffer_ = bufferlist.first();
 182         }
 183
 184         if (buffer_) {
 185                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 186                 buffer_->addUser(bv_);
 187
 188                 // If we don't have a text object for this, we make one
 189                 if (bv_->text == 0) {
 190                         resizeCurrentBuffer();
 191                 }
 192
 193                 // FIXME: needed when ?
 194                 bv_->text->first_y =
 195                         screen().topCursorVisible(bv_->text->cursor, bv_->text->first_y);
 196
 197                 // Similarly, buffer-dependent dialogs should be updated or
 198                 // hidden. This should go here because some dialogs (eg ToC)
 199                 // require bv_->text.
 200                 owner_->getDialogs().updateBufferDependent(true);
 201         } else {
 202                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 203                 owner_->getDialogs().hideBufferDependent();
 204
 205                 // Also remove all remaining text's from the testcache.
 206                 // (there should not be any!) (if there is any it is a
 207                 // bug!)
 208                 if (lyxerr.debugging())
 209                         textcache.show(lyxerr, "buffer delete all");
 210                 textcache.clear();
 211         }
 212
 213         repaint();
 214         updateScrollbar();
 215         owner_->updateMenubar();
 216         owner_->updateToolbar();
 217         owner_->updateLayoutChoice();
 218         owner_->updateWindowTitle();
 219
 220         if (grfx::Previews::activated() && buffer_)
 221                 grfx::Previews::get().generateBufferPreviews(*buffer_);
 222 }
 223
 224
 225 bool BufferView::Pimpl::fitCursor()
 226 {
 227         bool ret;
 228
 229         if (bv_->theLockingInset()) {
 230                 bv_->theLockingInset()->fitInsetCursor(bv_);
 231                 ret = true;
 232         } else {
 233                 ret = screen().fitCursor(bv_->text, bv_);
 234         }
 235
 236         bv_->owner()->getDialogs().updateParagraph();
 237         if (ret)
 238                 updateScrollbar();
 239         return ret;
 240 }
 241
 242
 243 void BufferView::Pimpl::redoCurrentBuffer()
 244 {
 245         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 246         if (buffer_ && bv_->text) {
 247                 resizeCurrentBuffer();
 248                 updateScrollbar();
 249                 owner_->updateLayoutChoice();
 250                 repaint();
 251         }
 252 }
 253
 254
 255 int BufferView::Pimpl::resizeCurrentBuffer()
 256 {
 257         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 258
 259         Paragraph * par = 0;
 260         Paragraph * selstartpar = 0;
 261         Paragraph * selendpar = 0;
 262         UpdatableInset * the_locking_inset = 0;
 263
 264         pos_type pos = 0;
 265         pos_type selstartpos = 0;
 266         pos_type selendpos = 0;
 267         bool selection = false;
 268         bool mark_set  = false;
 269
 270         owner_->prohibitInput();
 271
 272         owner_->message(_("Formatting document..."));
 273
 274         if (bv_->text) {
 275                 par = bv_->text->cursor.par();
 276                 pos = bv_->text->cursor.pos();
 277                 selstartpar = bv_->text->selection.start.par();
 278                 selstartpos = bv_->text->selection.start.pos();
 279                 selendpar = bv_->text->selection.end.par();
 280                 selendpos = bv_->text->selection.end.pos();
 281                 selection = bv_->text->selection.set();
 282                 mark_set = bv_->text->selection.mark();
 283                 the_locking_inset = bv_->theLockingInset();
 284                 buffer_->resizeInsets(bv_);
 285                 // I don't think the delete and new are necessary here we just could
 286                 // call only init! (Jug 20020419)
 287                 delete bv_->text;
 288                 bv_->text = new LyXText(bv_);
 289                 bv_->text->init(bv_);
 290         } else {
 291                 // See if we have a text in TextCache that fits
 292                 // the new buffer_ with the correct width.
 293                 bv_->text = textcache.findFit(buffer_, workarea().workWidth());
 294                 if (bv_->text) {
 295                         if (lyxerr.debugging()) {
 296                                 lyxerr << "Found a LyXText that fits:\n";
 297                                 textcache.show(lyxerr, make_pair(buffer_, make_pair(workarea().workWidth(), bv_->text)));
 298                         }
 299                         // Set the owner of the newly found text
 300                         //      bv_->text->owner(bv_);
 301                         if (lyxerr.debugging())
 302                                 textcache.show(lyxerr, "resizeCurrentBuffer");
 303
 304                         buffer_->resizeInsets(bv_);
 305                 } else {
 306                         bv_->text = new LyXText(bv_);
 307                         bv_->text->init(bv_);
 308                         //buffer_->resizeInsets(bv_);
 309                 }
 310         }
 311
 312         if (par) {
 313                 bv_->text->selection.set(true);
 314                 // At this point just to avoid the Delete-Empty-Paragraph-
 315                 // Mechanism when setting the cursor.
 316                 bv_->text->selection.mark(mark_set);
 317                 if (selection) {
 318                         bv_->text->setCursor(bv_, selstartpar, selstartpos);
 319                         bv_->text->selection.cursor = bv_->text->cursor;
 320                         bv_->text->setCursor(bv_, selendpar, selendpos);
 321                         bv_->text->setSelection(bv_);
 322                         bv_->text->setCursor(bv_, par, pos);
 323                 } else {
 324                         bv_->text->setCursor(bv_, par, pos);
 325                         bv_->text->selection.cursor = bv_->text->cursor;
 326                         bv_->text->selection.set(false);
 327                 }
 328                 // remake the inset locking
 329                 bv_->theLockingInset(the_locking_inset);
 330         }
 331
 332         bv_->text->first_y = screen().topCursorVisible(bv_->text->cursor, bv_->text->first_y);
 333
 334         switchKeyMap();
 335         owner_->allowInput();
 336
 337         updateScrollbar();
 338
 339         return 0;
 340 }
 341
 342
 343 void BufferView::Pimpl::repaint()
 344 {
 345         // Regenerate the screen.
 346         screen().redraw(bv_->text, bv_);
 347 }
 348
 349
 350 void BufferView::Pimpl::updateScrollbar()
 351 {
 352         if (!bv_->text) {
 353                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 354                 workarea().setScrollbarParams(0, 0, 0);
 355                 return;
 356         }
 357
 358         LyXText const & t = *bv_->text;
 359
 360         lyxerr[Debug::GUI] << "Updating scrollbar: h " << t.height << ", first_y "
 361                 << t.first_y << ", default height " << t.defaultHeight() << endl;
 362
 363         workarea().setScrollbarParams(t.height, t.first_y, t.defaultHeight());
 364 }
 365
 366
 367 void BufferView::Pimpl::scrollDocView(int value)
 368 {
 369         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 370
 371         if (!buffer_)
 372                 return;
 373
 374         screen().draw(bv_->text, bv_, value);
 375
 376         if (!lyxrc.cursor_follows_scrollbar)
 377                 return;
 378
 379         LyXText * vbt = bv_->text;
 380
 381         int const height = vbt->defaultHeight();
 382         int const first = static_cast<int>((bv_->text->first_y + height));
 383         int const last = static_cast<int>((bv_->text->first_y + workarea().workHeight() - height));
 384
 385         if (vbt->cursor.y() < first)
 386                 vbt->setCursorFromCoordinates(bv_, 0, first);
 387         else if (vbt->cursor.y() > last)
 388                 vbt->setCursorFromCoordinates(bv_, 0, last);
 389 }
 390
 391
 392 void BufferView::Pimpl::scroll(int lines)
 393 {
 394         if (!buffer_) {
 395                 return;
 396         }
 397
 398         LyXText const * t = bv_->text;
 399         int const line_height = t->defaultHeight();
 400
 401         // The new absolute coordinate
 402         int new_first_y = t->first_y + lines * line_height;
 403
 404         // Restrict to a valid value
 405         new_first_y = std::min(t->height - 4 * line_height, new_first_y);
 406         new_first_y = std::max(0, new_first_y);
 407
 408         scrollDocView(new_first_y);
 409
 410         // Update the scrollbar.
 411         workarea().setScrollbarParams(t->height, t->first_y, t->defaultHeight());
 412 }
 413
 414
 415 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 416                                          key_modifier::state state)
 417 {
 418         bv_->owner()->getLyXFunc().processKeySym(key, state);
 419 }
 420
 421
 422 void BufferView::Pimpl::selectionRequested()
 423 {
 424         static string sel;
 425
 426         if (!available())
 427                 return;
 428
 429         LyXText * text = bv_->getLyXText();
 430
 431         if (text->selection.set() &&
 432                 (!bv_->text->xsel_cache.set() ||
 433                  text->selection.start != bv_->text->xsel_cache.start ||
 434                  text->selection.end != bv_->text->xsel_cache.end))
 435         {
 436                 bv_->text->xsel_cache = text->selection;
 437                 sel = text->selectionAsString(bv_->buffer(), false);
 438         } else if (!text->selection.set()) {
 439                 sel = string();
 440                 bv_->text->xsel_cache.set(false);
 441         }
 442         if (!sel.empty()) {
 443                 workarea().putClipboard(sel);
 444         }
 445 }
 446
 447
 448 void BufferView::Pimpl::selectionLost()
 449 {
 450         if (available()) {
 451                 hideCursor();
 452                 toggleSelection();
 453                 bv_->getLyXText()->clearSelection();
 454                 showCursor();
 455                 bv_->text->xsel_cache.set(false);
 456         }
 457 }
 458
 459
 460 void BufferView::Pimpl::workAreaResize()
 461 {
 462         static int work_area_width;
 463         static int work_area_height;
 464
 465         bool const widthChange = workarea().workWidth() != work_area_width;
 466         bool const heightChange = workarea().workHeight() != work_area_height;
 467
 468         // update from work area
 469         work_area_width = workarea().workWidth();
 470         work_area_height = workarea().workHeight();
 471
 472         if (buffer_ != 0) {
 473                 if (widthChange) {
 474                         // The visible LyXView need a resize
 475                         resizeCurrentBuffer();
 476
 477                         // Remove all texts from the textcache
 478                         // This is not _really_ what we want to do. What
 479                         // we really want to do is to delete in textcache
 480                         // that does not have a BufferView with matching
 481                         // width, but as long as we have only one BufferView
 482                         // deleting all gives the same result.
 483                         if (lyxerr.debugging())
 484                                 textcache.show(lyxerr, "Expose delete all");
 485                         textcache.clear();
 486                         // FIXME: this is already done in resizeCurrentBuffer() ??
 487                         buffer_->resizeInsets(bv_);
 488                 } else if (heightChange) {
 489                         // fitCursor() ensures we don't jump back
 490                         // to the start of the document on vertical
 491                         // resize
 492                         fitCursor();
 493                 }
 494         }
 495
 496         if (widthChange || heightChange) {
 497                 repaint();
 498         }
 499
 500         // always make sure that the scrollbar is sane.
 501         updateScrollbar();
 502         owner_->updateLayoutChoice();
 503         return;
 504 }
 505
 506
 507 void BufferView::Pimpl::update()
 508 {
 509         if (!bv_->theLockingInset() || !bv_->theLockingInset()->nodraw()) {
 510                 LyXText::text_status st = bv_->text->status();
 511                 screen().update(bv_->text, bv_);
 512                 bool fitc = false;
 513                 while (bv_->text->status() == LyXText::CHANGED_IN_DRAW) {
 514                         bv_->text->fullRebreak(bv_);
 515                         st = LyXText::NEED_MORE_REFRESH;
 516                         bv_->text->setCursor(bv_, bv_->text->cursor.par(),
 517                                              bv_->text->cursor.pos());
 518                         if (bv_->text->selection.set()) {
 519                                 bv_->text->setCursor(bv_, bv_->text->selection.start,
 520                                                      bv_->text->selection.start.par(),
 521                                                      bv_->text->selection.start.pos());
 522                                 bv_->text->setCursor(bv_, bv_->text->selection.end,
 523                                                      bv_->text->selection.end.par(),
 524                                                      bv_->text->selection.end.pos());
 525                         }
 526                         fitc = true;
 527                         bv_->text->status(bv_, st);
 528                         screen().update(bv_->text, bv_);
 529                 }
 530                 // do this here instead of in the screen::update because of
 531                 // the above loop!
 532                 bv_->text->status(bv_, LyXText::UNCHANGED);
 533                 if (fitc)
 534                         fitCursor();
 535         }
 536 }
 537
 538 // Values used when calling update:
 539 // -3 - update
 540 // -2 - update, move sel_cursor if selection, fitcursor
 541 // -1 - update, move sel_cursor if selection, fitcursor, mark dirty
 542 //  0 - update, move sel_cursor if selection, fitcursor
 543 //  1 - update, move sel_cursor if selection, fitcursor, mark dirty
 544 //  3 - update, move sel_cursor if selection
 545 //
 546 // update -
 547 // a simple redraw of the parts that need refresh
 548 //
 549 // move sel_cursor if selection -
 550 // the text's sel_cursor is moved if there is selection is progress
 551 //
 552 // fitcursor -
 553 // fitCursor() is called and the scrollbar updated
 554 //
 555 // mark dirty -
 556 // the buffer is marked dirty.
 557 //
 558 // enum {
 559 //       UPDATE = 0,
 560 //       SELECT = 1,
 561 //       FITCUR = 2,
 562 //       CHANGE = 4
 563 // };
 564 //
 565 // UPDATE_ONLY = UPDATE;
 566 // UPDATE_SELECT = UPDATE | SELECT;
 567 // UPDATE_SELECT_MOVE = UPDATE | SELECT | FITCUR;
 568 // UPDATE_SELECT_MOVE_AFTER_CHANGE = UPDATE | SELECT | FITCUR | CHANGE;
 569 //
 570 // update(-3) -> update(0)         -> update(0) -> update(UPDATE)
 571 // update(-2) -> update(1 + 2)     -> update(3) -> update(SELECT|FITCUR)
 572 // update(-1) -> update(1 + 2 + 4) -> update(7) -> update(SELECT|FITCUR|CHANGE)
 573 // update(1)  -> update(1 + 2 + 4) -> update(7) -> update(SELECT|FITCUR|CHANGE)
 574 // update(3)  -> update(1)         -> update(1) -> update(SELECT)
 575
 576 void BufferView::Pimpl::update(LyXText * text, BufferView::UpdateCodes f)
 577 {
 578         owner_->updateLayoutChoice();
 579
 580         if (!text->selection.set() && (f & SELECT)) {
 581                 text->selection.cursor = text->cursor;
 582         }
 583
 584         text->fullRebreak(bv_);
 585
 586         if (text->inset_owner) {
 587                 text->inset_owner->setUpdateStatus(bv_, InsetText::NONE);
 588                 updateInset(text->inset_owner, false);
 589         } else {
 590                 update();
 591         }
 592
 593         if ((f & FITCUR)) {
 594                 fitCursor();
 595         }
 596
 597         if ((f & CHANGE)) {
 598                 buffer_->markDirty();
 599         }
 600 }
 601
 602
 603 // Callback for cursor timer
 604 void BufferView::Pimpl::cursorToggle()
 605 {
 606         if (!buffer_) {
 607                 cursor_timeout.restart();
 608                 return;
 609         }
 610
 611         if (!bv_->theLockingInset()) {
 612                 screen().cursorToggle(bv_);
 613         } else {
 614                 bv_->theLockingInset()->toggleInsetCursor(bv_);
 615         }
 616
 617         cursor_timeout.restart();
 618 }
 619
 620
 621 bool BufferView::Pimpl::available() const
 622 {
 623         if (buffer_ && bv_->text)
 624                 return true;
 625         return false;
 626 }
 627
 628
 629 Change const BufferView::Pimpl::getCurrentChange()
 630 {
 631         if (!bv_->buffer()->params.tracking_changes)
 632                 return Change(Change::UNCHANGED);
 633
 634         LyXText * t(bv_->getLyXText());
 635
 636         if (!t->selection.set())
 637                 return Change(Change::UNCHANGED);
 638
 639         LyXCursor const & cur(t->selection.start);
 640         return cur.par()->lookupChangeFull(cur.pos());
 641 }
 642
 643
 644 void BufferView::Pimpl::beforeChange(LyXText * text)
 645 {
 646         toggleSelection();
 647         text->clearSelection();
 648 }
 649
 650
 651 void BufferView::Pimpl::savePosition(unsigned int i)
 652 {
 653         if (i >= saved_positions_num)
 654                 return;
 655         saved_positions[i] = Position(buffer_->fileName(),
 656                                       bv_->text->cursor.par()->id(),
 657                                       bv_->text->cursor.pos());
 658         if (i > 0) {
 659                 ostringstream str;
 660 #if USE_BOOST_FORMAT
 661                 str << boost::format(_("Saved bookmark %1$d")) % i;
 662 #else
 663                 str << _("Saved bookmark ") << i;
 664 #endif
 665                 owner_->message(STRCONV(str.str()));
 666         }
 667 }
 668
 669
 670 void BufferView::Pimpl::restorePosition(unsigned int i)
 671 {
 672         if (i >= saved_positions_num)
 673                 return;
 674
 675         string const fname = saved_positions[i].filename;
 676
 677         beforeChange(bv_->text);
 678
 679         if (fname != buffer_->fileName()) {
 680                 Buffer * b = bufferlist.exists(fname) ?
 681                         bufferlist.getBuffer(fname) :
 682                         bufferlist.loadLyXFile(fname); // don't ask, just load it
 683                 if (b != 0) buffer(b);
 684         }
 685
 686         Paragraph * par = buffer_->getParFromID(saved_positions[i].par_id);
 687         if (!par)
 688                 return;
 689
 690         bv_->text->setCursor(bv_, par,
 691                              min(par->size(), saved_positions[i].par_pos));
 692
 693         update(bv_->text, BufferView::SELECT | BufferView::FITCUR);
 694         if (i > 0) {
 695                 ostringstream str;
 696 #if USE_BOOST_FORMAT
 697                 str << boost::format(_("Moved to bookmark %1$d")) % i;
 698 #else
 699                 str << _("Moved to bookmark ") << i;
 700 #endif
 701                 owner_->message(STRCONV(str.str()));
 702         }
 703 }
 704
 705
 706 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 707 {
 708         if (i >= saved_positions_num)
 709                 return false;
 710
 711         return !saved_positions[i].filename.empty();
 712 }
 713
 714
 715 void BufferView::Pimpl::switchKeyMap()
 716 {
 717         if (!lyxrc.rtl_support)
 718                 return;
 719
 720         LyXText * text = bv_->getLyXText();
 721         if (text->real_current_font.isRightToLeft()
 722             && !(bv_->theLockingInset()
 723                  && bv_->theLockingInset()->lyxCode() == Inset::ERT_CODE))
 724         {
 725                 if (owner_->getIntl().keymap == Intl::PRIMARY)
 726                         owner_->getIntl().KeyMapSec();
 727         } else {
 728                 if (owner_->getIntl().keymap == Intl::SECONDARY)
 729                         owner_->getIntl().KeyMapPrim();
 730         }
 731 }
 732
 733
 734 void BufferView::Pimpl::insetUnlock()
 735 {
 736         if (bv_->theLockingInset()) {
 737                 bv_->theLockingInset()->insetUnlock(bv_);
 738                 bv_->theLockingInset(0);
 739                 finishUndo();
 740         }
 741 }
 742
 743
 744 void BufferView::Pimpl::showCursor()
 745 {
 746         if (bv_->theLockingInset())
 747                 bv_->theLockingInset()->showInsetCursor(bv_);
 748         else
 749                 screen().showCursor(bv_->text, bv_);
 750 }
 751
 752
 753 void BufferView::Pimpl::hideCursor()
 754 {
 755         if (!bv_->theLockingInset())
 756                 screen().hideCursor();
 757 }
 758
 759
 760 void BufferView::Pimpl::toggleSelection(bool b)
 761 {
 762         if (bv_->theLockingInset())
 763                 bv_->theLockingInset()->toggleSelection(bv_, b);
 764         screen().toggleSelection(bv_->text, bv_, b);
 765 }
 766
 767
 768 void BufferView::Pimpl::toggleToggle()
 769 {
 770         screen().toggleToggle(bv_->text, bv_);
 771 }
 772
 773
 774 void BufferView::Pimpl::center()
 775 {
 776         LyXText * t = bv_->text;
 777
 778         beforeChange(t);
 779         int const half_height = workarea().workHeight() / 2;
 780         int new_y = 0;
 781
 782         if (t->cursor.y() > half_height) {
 783                 new_y = t->cursor.y() - half_height;
 784         }
 785
 786         // FIXME: can we do this w/o calling screen directly ?
 787         // This updates first_y but means the fitCursor() call
 788         // from the update(FITCUR) doesn't realise that we might
 789         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 790         // the scrollbar to be updated as it should, so we have
 791         // to do it manually. Any operation that does a center()
 792         // and also might have moved first_y must make sure to call
 793         // updateScrollbar() currently. Never mind that this is a
 794         // pretty obfuscated way of updating t->first_y
 795         screen().draw(t, bv_, new_y);
 796
 797         update(t, BufferView::SELECT | BufferView::FITCUR);
 798 }
 799
 800
 801 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 802 {
 803         workarea().putClipboard(stuff);
 804 }
 805
 806
 807 /*
 808  * Dispatch functions for actions which can be valid for BufferView->text
 809  * and/or InsetText->text!!!
 810  */
 811
 812
 813 Inset * BufferView::Pimpl::getInsetByCode(Inset::Code code)
 814 {
 815 #if 0
 816         LyXCursor cursor = bv_->getLyXText()->cursor;
 817         Buffer::inset_iterator it =
 818                 find_if(Buffer::inset_iterator(
 819                         cursor.par(), cursor.pos()),
 820                         buffer_->inset_iterator_end(),
 821                         lyx::compare_memfun(&Inset::lyxCode, code));
 822         return it != buffer_->inset_iterator_end() ? (*it) : 0;
 823 #else
 824         // Ok, this is a little bit too brute force but it
 825         // should work for now. Better infrastructure is comming. (Lgb)
 826
 827         Buffer * b = bv_->buffer();
 828         LyXCursor cursor = bv_->getLyXText()->cursor;
 829
 830         Buffer::inset_iterator beg = b->inset_iterator_begin();
 831         Buffer::inset_iterator end = b->inset_iterator_end();
 832
 833         bool cursor_par_seen = false;
 834
 835         for (; beg != end; ++beg) {
 836                 if (beg.getPar() == cursor.par()) {
 837                         cursor_par_seen = true;
 838                 }
 839                 if (cursor_par_seen) {
 840                         if (beg.getPar() == cursor.par()
 841                             && beg.getPos() >= cursor.pos()) {
 842                                 break;
 843                         } else if (beg.getPar() != cursor.par()) {
 844                                 break;
 845                         }
 846                 }
 847
 848         }
 849         if (beg != end) {
 850                 // Now find the first inset that matches code.
 851                 for (; beg != end; ++beg) {
 852                         if (beg->lyxCode() == code) {
 853                                 return &(*beg);
 854                         }
 855                 }
 856         }
 857         return 0;
 858 #endif
 859 }
 860
 861
 862 void BufferView::Pimpl::MenuInsertLyXFile(string const & filen)
 863 {
 864         string filename = filen;
 865
 866         if (filename.empty()) {
 867                 // Launch a file browser
 868                 string initpath = lyxrc.document_path;
 869
 870                 if (available()) {
 871                         string const trypath = owner_->buffer()->filePath();
 872                         // If directory is writeable, use this as default.
 873                         if (IsDirWriteable(trypath))
 874                                 initpath = trypath;
 875                 }
 876
 877                 FileDialog fileDlg(bv_->owner(),
 878                                    _("Select LyX document to insert"),
 879                         LFUN_FILE_INSERT,
 880                         make_pair(string(_("Documents|#o#O")),
 881                                   string(lyxrc.document_path)),
 882                         make_pair(string(_("Examples|#E#e")),
 883                                   string(AddPath(system_lyxdir, "examples"))));
 884
 885                 FileDialog::Result result =
 886                         fileDlg.open(initpath,
 887                                        _("*.lyx| LyX Documents (*.lyx)"));
 888
 889                 if (result.first == FileDialog::Later)
 890                         return;
 891
 892                 filename = result.second;
 893
 894                 // check selected filename
 895                 if (filename.empty()) {
 896                         owner_->message(_("Canceled."));
 897                         return;
 898                 }
 899         }
 900
 901         // get absolute path of file and add ".lyx" to the filename if
 902         // necessary
 903         filename = FileSearch(string(), filename, "lyx");
 904
 905         string const disp_fn(MakeDisplayPath(filename));
 906
 907         ostringstream s1;
 908 #if USE_BOOST_FORMAT
 909         s1 << boost::format(_("Inserting document %1$s...")) % disp_fn;
 910 #else
 911         s1 << _("Inserting document ") << disp_fn << _("...");
 912 #endif
 913         owner_->message(STRCONV(s1.str()));
 914         bool const res = bv_->insertLyXFile(filename);
 915         if (res) {
 916                 ostringstream str;
 917 #if USE_BOOST_FORMAT
 918                 str << boost::format(_("Document %1$s inserted.")) % disp_fn;
 919 #else
 920                 str << _("Document ") << disp_fn << _(" inserted.");
 921 #endif
 922                 owner_->message(STRCONV(str.str()));
 923         } else {
 924                 ostringstream str;
 925 #if USE_BOOST_FORMAT
 926                 str << boost::format(_("Could not insert document %1$s")) % disp_fn;
 927 #else
 928                 str << _("Could not insert document ") << disp_fn;
 929 #endif
 930                 owner_->message(STRCONV(str.str()));
 931         }
 932 }
 933
 934
 935 void BufferView::Pimpl::trackChanges()
 936 {
 937         Buffer * buf(bv_->buffer());
 938         bool const tracking(buf->params.tracking_changes);
 939
 940         if (!tracking) {
 941                 ParIterator const end = buf->par_iterator_end();
 942                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it) {
 943                         (*it)->trackChanges();
 944                 }
 945                 buf->params.tracking_changes = true;
 946
 947                 // we cannot allow undos beyond the freeze point
 948                 buf->undostack.clear();
 949         } else {
 950                 bv_->update(bv_->text, BufferView::SELECT | BufferView::FITCUR);
 951                 bv_->text->setCursor(bv_, &(*buf->paragraphs.begin()), 0);
 952 #warning changes FIXME
 953                 //moveCursorUpdate(false);
 954
 955                 bool found = lyxfind::findNextChange(bv_);
 956                 if (found) {
 957                         owner_->getDialogs().showMergeChanges();
 958                         return;
 959                 }
 960
 961                 ParIterator const end = buf->par_iterator_end();
 962                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it) {
 963                         (*it)->untrackChanges();
 964                 }
 965                 buf->params.tracking_changes = false;
 966         }
 967
 968         buf->redostack.clear();
 969 }
 970
 971
 972 bool BufferView::Pimpl::dispatch(FuncRequest const & ev)
 973 {
 974         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
 975                 << " action[" << ev.action << ']'
 976                 << " arg[" << ev.argument << ']'
 977                 << " x[" << ev.x << ']'
 978                 << " y[" << ev.y << ']'
 979                 << " button[" << ev.button() << ']'
 980                 << endl;
 981
 982         // e.g. Qt mouse press when no buffer
 983         if (!buffer_)
 984                 return false;
 985
 986         LyXTextClass const & tclass = buffer_->params.getLyXTextClass();
 987
 988         switch (ev.action) {
 989
 990         case LFUN_SCROLL_INSET:
 991                 // this is not handled here as this function is only active
 992                 // if we have a locking_inset and that one is (or contains)
 993                 // a tabular-inset
 994                 break;
 995
 996         case LFUN_INSET_GRAPHICS:
 997         {
 998                 Inset * new_inset = new InsetGraphics;
 999                 if (!insertInset(new_inset)) {
1000                         delete new_inset;
1001                 } else {
1002                         // this is need because you don't use a inset->Edit()
1003                         updateInset(new_inset, true);
1004                         new_inset->edit(bv_);
1005                 }
1006                 break;
1007         }
1008
1009         case LFUN_LAYOUT_COPY:
1010                 bv_->copyEnvironment();
1011                 break;
1012
1013         case LFUN_LAYOUT_PASTE:
1014                 bv_->pasteEnvironment();
1015                 switchKeyMap();
1016                 break;
1017
1018         case LFUN_DEPTH_MIN:
1019                 changeDepth(bv_, bv_->getLyXText(), -1);
1020                 break;
1021
1022         case LFUN_DEPTH_PLUS:
1023                 changeDepth(bv_, bv_->getLyXText(), 1);
1024                 break;
1025
1026         case LFUN_FREE:
1027                 owner_->getDialogs().setUserFreeFont();
1028                 break;
1029
1030         case LFUN_FILE_INSERT:
1031                 MenuInsertLyXFile(ev.argument);
1032                 break;
1033
1034         case LFUN_FILE_INSERT_ASCII_PARA:
1035                 InsertAsciiFile(bv_, ev.argument, true);
1036                 break;
1037
1038         case LFUN_FILE_INSERT_ASCII:
1039                 InsertAsciiFile(bv_, ev.argument, false);
1040                 break;
1041
1042         case LFUN_LANGUAGE:
1043                 lang(bv_, ev.argument);
1044                 switchKeyMap();
1045                 owner_->view_state_changed();
1046                 break;
1047
1048         case LFUN_EMPH:
1049                 emph(bv_);
1050                 owner_->view_state_changed();
1051                 break;
1052
1053         case LFUN_BOLD:
1054                 bold(bv_);
1055                 owner_->view_state_changed();
1056                 break;
1057
1058         case LFUN_NOUN:
1059                 noun(bv_);
1060                 owner_->view_state_changed();
1061                 break;
1062
1063         case LFUN_CODE:
1064                 code(bv_);
1065                 owner_->view_state_changed();
1066                 break;
1067
1068         case LFUN_SANS:
1069                 sans(bv_);
1070                 owner_->view_state_changed();
1071                 break;
1072
1073         case LFUN_ROMAN:
1074                 roman(bv_);
1075                 owner_->view_state_changed();
1076                 break;
1077
1078         case LFUN_DEFAULT:
1079                 styleReset(bv_);
1080                 owner_->view_state_changed();
1081                 break;
1082
1083         case LFUN_UNDERLINE:
1084                 underline(bv_);
1085                 owner_->view_state_changed();
1086                 break;
1087
1088         case LFUN_FONT_SIZE:
1089                 fontSize(bv_, ev.argument);
1090                 owner_->view_state_changed();
1091                 break;
1092
1093         case LFUN_FONT_STATE:
1094                 owner_->getLyXFunc().setMessage(currentState(bv_));
1095                 break;
1096
1097         case LFUN_INSERT_LABEL:
1098                 MenuInsertLabel(bv_, ev.argument);
1099                 break;
1100
1101         case LFUN_REF_INSERT:
1102                 if (ev.argument.empty()) {
1103                         InsetCommandParams p("ref");
1104                         owner_->getDialogs().createRef(p.getAsString());
1105                 } else {
1106                         InsetCommandParams p;
1107                         p.setFromString(ev.argument);
1108
1109                         InsetRef * inset = new InsetRef(p, *buffer_);
1110                         if (!insertInset(inset))
1111                                 delete inset;
1112                         else
1113                                 updateInset(inset, true);
1114                 }
1115                 break;
1116
1117         case LFUN_BOOKMARK_SAVE:
1118                 savePosition(strToUnsignedInt(ev.argument));
1119                 break;
1120
1121         case LFUN_BOOKMARK_GOTO:
1122                 restorePosition(strToUnsignedInt(ev.argument));
1123                 break;
1124
1125         case LFUN_REF_GOTO:
1126         {
1127                 string label = ev.argument;
1128                 if (label.empty()) {
1129                         InsetRef * inset =
1130                                 static_cast<InsetRef*>(getInsetByCode(Inset::REF_CODE));
1131                         if (inset) {
1132                                 label = inset->getContents();
1133                                 savePosition(0);
1134                         }
1135                 }
1136
1137                 if (!label.empty()) {
1138                         //bv_->savePosition(0);
1139                         if (!bv_->gotoLabel(label))
1140                                 Alert::alert(_("Error"),
1141                                            _("Couldn't find this label"),
1142                                            _("in current document."));
1143                 }
1144         }
1145         break;
1146
1147         // --- accented characters ---------------------------
1148
1149         case LFUN_UMLAUT:
1150         case LFUN_CIRCUMFLEX:
1151         case LFUN_GRAVE:
1152         case LFUN_ACUTE:
1153         case LFUN_TILDE:
1154         case LFUN_CEDILLA:
1155         case LFUN_MACRON:
1156         case LFUN_DOT:
1157         case LFUN_UNDERDOT:
1158         case LFUN_UNDERBAR:
1159         case LFUN_CARON:
1160         case LFUN_SPECIAL_CARON:
1161         case LFUN_BREVE:
1162         case LFUN_TIE:
1163         case LFUN_HUNG_UMLAUT:
1164         case LFUN_CIRCLE:
1165         case LFUN_OGONEK:
1166                 if (ev.argument.empty()) {
1167                         // As always...
1168                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1169                 } else {
1170                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1171                         owner_->getIntl().getTransManager()
1172                                 .TranslateAndInsert(ev.argument[0], bv_->getLyXText());
1173                         update(bv_->getLyXText(),
1174                                BufferView::SELECT
1175                                | BufferView::FITCUR
1176                                | BufferView::CHANGE);
1177                 }
1178                 break;
1179
1180         case LFUN_MATH_MACRO:
1181         case LFUN_MATH_DELIM:
1182         case LFUN_INSERT_MATRIX:
1183         case LFUN_INSERT_MATH:
1184         case LFUN_MATH_IMPORT_SELECTION: // Imports LaTeX from the X selection
1185         case LFUN_MATH_DISPLAY:          // Open or create a displayed math inset
1186         case LFUN_MATH_MODE:             // Open or create an inlined math inset
1187         case LFUN_GREEK:                 // Insert a single greek letter
1188                 mathDispatch(FuncRequest(bv_, ev.action, ev.argument));
1189                 break;
1190
1191         case LFUN_CITATION_INSERT:
1192         {
1193                 InsetCommandParams p;
1194                 p.setFromString(ev.argument);
1195
1196                 InsetCitation * inset = new InsetCitation(p);
1197                 if (!insertInset(inset))
1198                         delete inset;
1199                 else {
1200                         inset->setLoadingBuffer(bv_->buffer(), false);
1201                         updateInset(inset, true);
1202                 }
1203
1204         }
1205         break;
1206
1207         case LFUN_INSERT_BIBTEX:
1208         {
1209                 // ale970405+lasgoutt970425
1210                 // The argument can be up to two tokens separated
1211                 // by a space. The first one is the bibstyle.
1212                 string const db = token(ev.argument, ' ', 0);
1213                 string bibstyle = token(ev.argument, ' ', 1);
1214                 if (bibstyle.empty())
1215                         bibstyle = "plain";
1216
1217                 InsetCommandParams p("BibTeX", db, bibstyle);
1218                 InsetBibtex * inset = new InsetBibtex(p);
1219
1220                 if (insertInset(inset)) {
1221                         if (ev.argument.empty())
1222                                 inset->edit(bv_);
1223                 } else
1224                         delete inset;
1225         }
1226         break;
1227
1228         // BibTeX data bases
1229         case LFUN_BIBDB_ADD:
1230         {
1231                 InsetBibtex * inset =
1232                         static_cast<InsetBibtex*>(getInsetByCode(Inset::BIBTEX_CODE));
1233                 if (inset) {
1234                         inset->addDatabase(ev.argument);
1235                 }
1236         }
1237         break;
1238
1239         case LFUN_BIBDB_DEL:
1240         {
1241                 InsetBibtex * inset =
1242                         static_cast<InsetBibtex*>(getInsetByCode(Inset::BIBTEX_CODE));
1243                 if (inset)
1244                         inset->delDatabase(ev.argument);
1245         }
1246         break;
1247
1248         case LFUN_BIBTEX_STYLE:
1249         {
1250                 InsetBibtex * inset =
1251                         static_cast<InsetBibtex*>(getInsetByCode(Inset::BIBTEX_CODE));
1252                 if (inset)
1253                         inset->setOptions(ev.argument);
1254         }
1255         break;
1256
1257         case LFUN_CHILD_INSERT:
1258         {
1259                 InsetInclude::Params p;
1260                 if (!ev.argument.empty())
1261                         p.cparams.setFromString(ev.argument);
1262                 p.masterFilename_ = buffer_->fileName();
1263
1264                 InsetInclude * inset = new InsetInclude(p);
1265                 if (!insertInset(inset))
1266                         delete inset;
1267                 else {
1268                         updateInset(inset, true);
1269                         bv_->owner()->getDialogs().showInclude(inset);
1270                 }
1271         }
1272         break;
1273
1274         case LFUN_FLOAT_LIST:
1275                 if (tclass.floats().typeExist(ev.argument)) {
1276                         Inset * inset = new InsetFloatList(ev.argument);
1277                         if (!insertInset(inset, tclass.defaultLayoutName()))
1278                                 delete inset;
1279                 } else {
1280                         lyxerr << "Non-existent float type: "
1281                                << ev.argument << endl;
1282                 }
1283                 break;
1284
1285         case LFUN_THESAURUS_ENTRY:
1286         {
1287                 string arg = ev.argument;
1288
1289                 if (arg.empty()) {
1290                         arg = bv_->getLyXText()->selectionAsString(buffer_,
1291                                                                    false);
1292
1293                         // FIXME
1294                         if (arg.size() > 100 || arg.empty()) {
1295                                 // Get word or selection
1296                                 bv_->getLyXText()->selectWordWhenUnderCursor(bv_, LyXText::WHOLE_WORD);
1297                                 arg = bv_->getLyXText()->selectionAsString(buffer_, false);
1298                                 // FIXME: where is getLyXText()->unselect(bv_) ?
1299                         }
1300                 }
1301
1302                 bv_->owner()->getDialogs().showThesaurus(arg);
1303         }
1304                 break;
1305
1306         case LFUN_TRACK_CHANGES:
1307                 trackChanges();
1308                 break;
1309
1310         case LFUN_MERGE_CHANGES:
1311                 owner_->getDialogs().showMergeChanges();
1312                 break;
1313
1314         case LFUN_ACCEPT_ALL_CHANGES: {
1315                 bv_->update(bv_->text, BufferView::SELECT | BufferView::FITCUR);
1316                 bv_->text->setCursor(bv_, &(*bv_->buffer()->paragraphs.begin()), 0);
1317 #warning FIXME changes
1318                 //moveCursorUpdate(false);
1319
1320                 while (lyxfind::findNextChange(bv_)) {
1321                         bv_->getLyXText()->acceptChange(bv_);
1322                 }
1323                 update(bv_->text,
1324                         BufferView::SELECT | BufferView::FITCUR | BufferView::CHANGE);
1325                 break;
1326         }
1327
1328         case LFUN_REJECT_ALL_CHANGES: {
1329                 bv_->update(bv_->text, BufferView::SELECT | BufferView::FITCUR);
1330                 bv_->text->setCursor(bv_, &(*bv_->buffer()->paragraphs.begin()), 0);
1331 #warning FIXME changes
1332                 //moveCursorUpdate(false);
1333
1334                 while (lyxfind::findNextChange(bv_)) {
1335                         bv_->getLyXText()->rejectChange(bv_);
1336                 }
1337                 update(bv_->text,
1338                         BufferView::SELECT | BufferView::FITCUR | BufferView::CHANGE);
1339                 break;
1340         }
1341
1342         case LFUN_ACCEPT_CHANGE: {
1343                 bv_->getLyXText()->acceptChange(bv_);
1344                 update(bv_->text,
1345                         BufferView::SELECT | BufferView::FITCUR | BufferView::CHANGE);
1346                 break;
1347         }
1348
1349         case LFUN_REJECT_CHANGE: {
1350                 bv_->getLyXText()->rejectChange(bv_);
1351                 update(bv_->text,
1352                         BufferView::SELECT | BufferView::FITCUR | BufferView::CHANGE);
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(Inset * 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         setCursorParUndo(bv_);
1380         freezeUndo();
1381
1382         beforeChange(bv_->text);
1383         if (!lout.empty()) {
1384                 update(bv_->text, BufferView::SELECT|BufferView::FITCUR);
1385                 bv_->text->breakParagraph(bv_);
1386                 update(bv_->text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
1387
1388                 if (!bv_->text->cursor.par()->empty()) {
1389                         bv_->text->cursorLeft(bv_);
1390
1391                         bv_->text->breakParagraph(bv_);
1392                         update(bv_->text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
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(bv_, lay);
1410
1411                 bv_->text->setParagraph(bv_, 0, 0,
1412                                    0, 0,
1413                                    VSpace(VSpace::NONE), VSpace(VSpace::NONE),
1414                                    Spacing(),
1415                                    LYX_ALIGN_LAYOUT,
1416                                    string(),
1417                                    0);
1418                 update(bv_->text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
1419         }
1420
1421         bv_->text->insertInset(bv_, inset);
1422         update(bv_->text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
1423
1424         unFreezeUndo();
1425         return true;
1426 }
1427
1428
1429 void BufferView::Pimpl::updateInset(Inset * inset, bool mark_dirty)
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(bv_, inset)) {
1438                                 update();
1439                                 if (mark_dirty) {
1440                                         buffer_->markDirty();
1441                                 }
1442                                 updateScrollbar();
1443                                 return;
1444                         }
1445                 } else if (bv_->theLockingInset()->updateInsetInInset(bv_, inset)) {
1446                         if (bv_->text->updateInset(bv_,  bv_->theLockingInset())) {
1447                                 update();
1448                                 if (mark_dirty) {
1449                                         buffer_->markDirty();
1450                                 }
1451                                 updateScrollbar();
1452                                 return;
1453                         }
1454                 }
1455         }
1456
1457         // then check if the inset is a top_level inset (has no owner)
1458         // if yes do the update as always otherwise we have to update the
1459         // toplevel inset where this inset is inside
1460         Inset * tl_inset = inset;
1461         while (tl_inset->owner())
1462                 tl_inset = tl_inset->owner();
1463         hideCursor();
1464         if (tl_inset == inset) {
1465                 update(bv_->text, BufferView::UPDATE);
1466                 if (bv_->text->updateInset(bv_, inset)) {
1467                         if (mark_dirty) {
1468                                 update(bv_->text,
1469                                        BufferView::SELECT
1470                                        | BufferView::FITCUR
1471                                        | BufferView::CHANGE);
1472                         } else {
1473                                 update(bv_->text, SELECT);
1474                         }
1475                         return;
1476                 }
1477         } else if (static_cast<UpdatableInset *>(tl_inset)
1478                            ->updateInsetInInset(bv_, inset))
1479         {
1480                 if (bv_->text->updateInset(bv_, tl_inset)) {
1481                         update();
1482                         updateScrollbar();
1483                 }
1484         }
1485 }