src/CutAndPaste.C

   1 /*
   2  * \file CutAndPaste.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Jürgen Vigna
   7  * \author Lars Gullik Bjønnes
   8  * \author Alfredo Braunstein
   9  *
  10  * Full author contact details are available in file CREDITS.
  11  */
  12
  13 #include <config.h>
  14
  15 #include "CutAndPaste.h"
  16
  17 #include "buffer.h"
  18 #include "buffer_funcs.h"
  19 #include "bufferparams.h"
  20 #include "BufferView.h"
  21 #include "cursor.h"
  22 #include "debug.h"
  23 #include "errorlist.h"
  24 #include "funcrequest.h"
  25 #include "gettext.h"
  26 #include "insetiterator.h"
  27 #include "lfuns.h"
  28 #include "lyxrc.h"
  29 #include "lyxtext.h"
  30 #include "lyxtextclasslist.h"
  31 #include "paragraph.h"
  32 #include "paragraph_funcs.h"
  33 #include "ParagraphParameters.h"
  34 #include "ParagraphList_fwd.h"
  35 #include "pariterator.h"
  36 #include "undo.h"
  37
  38 #include "insets/insetcharstyle.h"
  39 #include "insets/insettabular.h"
  40
  41 #include "mathed/math_data.h"
  42 #include "mathed/math_inset.h"
  43 #include "mathed/math_support.h"
  44
  45 #include "support/lstrings.h"
  46
  47 #include <boost/tuple/tuple.hpp>
  48
  49 using lyx::pos_type;
  50 using lyx::pit_type;
  51 using lyx::textclass_type;
  52
  53 using lyx::support::bformat;
  54
  55 using std::endl;
  56 using std::for_each;
  57 using std::make_pair;
  58 using std::pair;
  59 using std::vector;
  60 using std::string;
  61
  62
  63 namespace {
  64
  65 typedef std::pair<lyx::pit_type, int> PitPosPair;
  66
  67 typedef limited_stack<pair<ParagraphList, textclass_type> > CutStack;
  68
  69 CutStack theCuts(10);
  70
  71 // store whether the tabular stack is newer than the normal copy stack
  72 // FIXME: this is a workaround for bug 1919. Should be removed for 1.5,
  73 // when we (hopefully) have a one-for-all paste mechanism.
  74 bool dirty_tabular_stack_;
  75
  76 class resetOwnerAndChanges : public std::unary_function<Paragraph, void> {
  77 public:
  78         void operator()(Paragraph & p) const {
  79                 p.cleanChanges();
  80                 p.setInsetOwner(0);
  81         }
  82 };
  83
  84
  85 void region(CursorSlice const & i1, CursorSlice const & i2,
  86         InsetBase::row_type & r1, InsetBase::row_type & r2,
  87         InsetBase::col_type & c1, InsetBase::col_type & c2)
  88 {
  89         InsetBase & p = i1.inset();
  90         c1 = p.col(i1.idx());
  91         c2 = p.col(i2.idx());
  92         if (c1 > c2)
  93                 std::swap(c1, c2);
  94         r1 = p.row(i1.idx());
  95         r2 = p.row(i2.idx());
  96         if (r1 > r2)
  97                 std::swap(r1, r2);
  98 }
  99
 100
 101 bool checkPastePossible(int index)
 102 {
 103         return size_t(index) < theCuts.size() && !theCuts[index].first.empty();
 104 }
 105
 106
 107 pair<PitPosPair, pit_type>
 108 pasteSelectionHelper(Buffer const & buffer, ParagraphList & pars,
 109         pit_type pit, int pos,
 110         textclass_type tc, size_t cut_index, ErrorList & errorlist)
 111 {
 112         if (!checkPastePossible(cut_index))
 113                 return make_pair(PitPosPair(pit, pos), pit);
 114
 115         BOOST_ASSERT (pos <= pars[pit].size());
 116
 117         // Make a copy of the CaP paragraphs.
 118         ParagraphList insertion = theCuts[cut_index].first;
 119         textclass_type const textclass = theCuts[cut_index].second;
 120
 121         // Now remove all out of the pars which is NOT allowed in the
 122         // new environment and set also another font if that is required.
 123
 124         // Convert newline to paragraph break in ERT inset.
 125         // This should not be here!
 126         if (pars[pit].inInset() &&
 127             pars[pit].inInset()->lyxCode() == InsetBase::ERT_CODE) {
 128                 for (ParagraphList::size_type i = 0; i < insertion.size(); ++i) {
 129                         for (pos_type j = 0; j < insertion[i].size(); ++j) {
 130                                 if (insertion[i].isNewline(j)) {
 131                                         insertion[i].erase(j);
 132                                         breakParagraphConservative(
 133                                                         buffer.params(),
 134                                                         insertion, i, j);
 135                                 }
 136                         }
 137                 }
 138         }
 139
 140         // Make sure there is no class difference.
 141         lyx::cap::SwitchBetweenClasses(textclass, tc, insertion, errorlist);
 142
 143         ParagraphList::iterator tmpbuf = insertion.begin();
 144         int depth_delta = pars[pit].params().depth() - tmpbuf->params().depth();
 145
 146         Paragraph::depth_type max_depth = pars[pit].getMaxDepthAfter();
 147
 148         for (; tmpbuf != insertion.end(); ++tmpbuf) {
 149                 // If we have a negative jump so that the depth would
 150                 // go below 0 depth then we have to redo the delta to
 151                 // this new max depth level so that subsequent
 152                 // paragraphs are aligned correctly to this paragraph
 153                 // at level 0.
 154                 if (int(tmpbuf->params().depth()) + depth_delta < 0)
 155                         depth_delta = 0;
 156
 157                 // Set the right depth so that we are not too deep or shallow.
 158                 tmpbuf->params().depth(tmpbuf->params().depth() + depth_delta);
 159                 if (tmpbuf->params().depth() > max_depth)
 160                         tmpbuf->params().depth(max_depth);
 161
 162                 // Only set this from the 2nd on as the 2nd depends
 163                 // for maxDepth still on pit.
 164                 if (tmpbuf != insertion.begin())
 165                         max_depth = tmpbuf->getMaxDepthAfter();
 166
 167                 // Set the inset owner of this paragraph.
 168                 tmpbuf->setInsetOwner(pars[pit].inInset());
 169                 for (pos_type i = 0; i < tmpbuf->size(); ++i) {
 170                         if (tmpbuf->getChar(i) == Paragraph::META_INSET &&
 171                             !pars[pit].insetAllowed(tmpbuf->getInset(i)->lyxCode()))
 172                                 tmpbuf->erase(i--);
 173                 }
 174         }
 175
 176         bool const empty = pars[pit].empty();
 177         if (!empty) {
 178                 // Make the buf exactly the same layout as the cursor
 179                 // paragraph.
 180                 insertion.begin()->makeSameLayout(pars[pit]);
 181         }
 182
 183         // Prepare the paragraphs and insets for insertion.
 184         // A couple of insets store buffer references so need updating.
 185         InsetText in;
 186         std::swap(in.paragraphs(), insertion);
 187
 188         ParIterator fpit = par_iterator_begin(in);
 189         ParIterator fend = par_iterator_end(in);
 190
 191         for (; fpit != fend; ++fpit) {
 192                 InsetList::iterator lit = fpit->insetlist.begin();
 193                 InsetList::iterator eit = fpit->insetlist.end();
 194
 195                 for (; lit != eit; ++lit) {
 196                         switch (lit->inset->lyxCode()) {
 197                         case InsetBase::TABULAR_CODE: {
 198                                 InsetTabular * it = static_cast<InsetTabular*>(lit->inset);
 199                                 it->buffer(&buffer);
 200                                 break;
 201                         }
 202
 203                         default:
 204                                 break; // nothing
 205                         }
 206                 }
 207         }
 208         std::swap(in.paragraphs(), insertion);
 209
 210         // Split the paragraph for inserting the buf if necessary.
 211         if (!empty)
 212                 breakParagraphConservative(buffer.params(), pars, pit, pos);
 213
 214         // Paste it!
 215         if (empty) {
 216                 pars.insert(pars.begin() + pit, insertion.begin(),
 217                             insertion.end());
 218
 219                 // merge the empty par with the last par of the insertion
 220                 mergeParagraph(buffer.params(), pars,
 221                                pit + insertion.size() - 1);
 222         } else {
 223                 pars.insert(pars.begin() + pit + 1, insertion.begin(),
 224                             insertion.end());
 225
 226                 // merge the first par of the insertion with the current par
 227                 mergeParagraph(buffer.params(), pars, pit);
 228         }
 229
 230         pit_type last_paste = pit + insertion.size() - 1;
 231
 232         // Store the new cursor position.
 233         pit = last_paste;
 234         pos = pars[last_paste].size();
 235
 236         // Maybe some pasting.
 237         if (!empty && last_paste + 1 != pit_type(pars.size())) {
 238                 if (pars[last_paste + 1].hasSameLayout(pars[last_paste])) {
 239                         mergeParagraph(buffer.params(), pars, last_paste);
 240                 } else if (pars[last_paste + 1].empty()) {
 241                         pars[last_paste + 1].makeSameLayout(pars[last_paste]);
 242                         mergeParagraph(buffer.params(), pars, last_paste);
 243                 } else if (pars[last_paste].empty()) {
 244                         pars[last_paste].makeSameLayout(pars[last_paste + 1]);
 245                         mergeParagraph(buffer.params(), pars, last_paste);
 246                 } else {
 247                         pars[last_paste + 1].stripLeadingSpaces();
 248                         ++last_paste;
 249                 }
 250         }
 251
 252         return make_pair(PitPosPair(pit, pos), last_paste + 1);
 253 }
 254
 255
 256 PitPosPair eraseSelectionHelper(BufferParams const & params,
 257         ParagraphList & pars,
 258         pit_type startpit, pit_type endpit,
 259         int startpos, int endpos, bool doclear)
 260 {
 261         // Start of selection is really invalid.
 262         if (startpit == pit_type(pars.size()) ||
 263             (startpos > pars[startpit].size()))
 264                 return PitPosPair(endpit, endpos);
 265
 266         // Start and end is inside same paragraph
 267         if (endpit == pit_type(pars.size()) ||
 268             startpit == endpit) {
 269                 endpos -= pars[startpit].erase(startpos, endpos);
 270                 return PitPosPair(endpit, endpos);
 271         }
 272
 273         bool all_erased = true;
 274
 275         // Clear fragments of the first par in selection
 276         pars[startpit].erase(startpos, pars[startpit].size());
 277         if (pars[startpit].size() != startpos)
 278                 all_erased = false;
 279
 280         // Clear fragments of the last par in selection
 281         endpos -= pars[endpit].erase(0, endpos);
 282         if (endpos != 0)
 283                 all_erased = false;
 284
 285         // Erase all the "middle" paragraphs.
 286         if (params.tracking_changes) {
 287                 // Look through the deleted pars if any, erasing as needed
 288                 for (pit_type pit = startpit + 1; pit != endpit;) {
 289                         // "erase" the contents of the par
 290                         pars[pit].erase(0, pars[pit].size());
 291                         if (pars[pit].empty()) {
 292                                 // remove the par if it's now empty
 293                                 pars.erase(pars.begin() + pit);
 294                                 --endpit;
 295                         } else {
 296                                 ++pit;
 297                                 all_erased = false;
 298                         }
 299                 }
 300         } else {
 301                 pars.erase(pars.begin() + startpit + 1, pars.begin() + endpit);
 302                 endpit = startpit + 1;
 303         }
 304
 305 #if 0 // FIXME: why for cut but not copy ?
 306         // the cut selection should begin with standard layout
 307         if (realcut) {
 308                 buf->params().clear();
 309                 buf->bibkey = 0;
 310                 buf->layout(textclasslist[buffer->params.textclass].defaultLayoutName());
 311         }
 312 #endif
 313
 314         if (startpit + 1 == pit_type(pars.size()))
 315                 return PitPosPair(endpit, endpos);
 316
 317         if (doclear) {
 318                 pars[startpit + 1].stripLeadingSpaces();
 319         }
 320
 321         // Merge first and last paragraph, if possible
 322         if (all_erased &&
 323             (pars[startpit].hasSameLayout(pars[startpit + 1]) ||
 324              pars[startpit + 1].empty())) {
 325                 mergeParagraph(params, pars, startpit);
 326                 // This because endpar gets deleted here!
 327                 endpit = startpit;
 328                 endpos = startpos;
 329         }
 330
 331         return PitPosPair(endpit, endpos);
 332 }
 333
 334
 335 void copySelectionHelper(ParagraphList & pars,
 336         pit_type startpit, pit_type endpit,
 337         int start, int end, textclass_type tc)
 338 {
 339         BOOST_ASSERT(0 <= start && start <= pars[startpit].size());
 340         BOOST_ASSERT(0 <= end && end <= pars[endpit].size());
 341         BOOST_ASSERT(startpit != endpit || start <= end);
 342
 343         // Clone the paragraphs within the selection.
 344         ParagraphList paragraphs(pars.begin() + startpit, pars.begin() + endpit + 1);
 345
 346         for_each(paragraphs.begin(), paragraphs.end(), resetOwnerAndChanges());
 347
 348         // Cut out the end of the last paragraph.
 349         Paragraph & back = paragraphs.back();
 350         back.erase(end, back.size());
 351
 352         // Cut out the begin of the first paragraph
 353         Paragraph & front = paragraphs.front();
 354         front.erase(0, start);
 355
 356         theCuts.push(make_pair(paragraphs, tc));
 357 }
 358
 359 } // namespace anon
 360
 361
 362
 363
 364 namespace lyx {
 365 namespace cap {
 366
 367 string grabAndEraseSelection(LCursor & cur)
 368 {
 369         if (!cur.selection())
 370                 return string();
 371         string res = grabSelection(cur);
 372         eraseSelection(cur);
 373         return res;
 374 }
 375
 376
 377 void SwitchBetweenClasses(textclass_type c1, textclass_type c2,
 378         ParagraphList & pars, ErrorList & errorlist)
 379 {
 380         BOOST_ASSERT(!pars.empty());
 381         if (c1 == c2)
 382                 return;
 383
 384         LyXTextClass const & tclass1 = textclasslist[c1];
 385         LyXTextClass const & tclass2 = textclasslist[c2];
 386
 387         InsetText in;
 388         std::swap(in.paragraphs(), pars);
 389
 390         // layouts
 391         ParIterator end = par_iterator_end(in);
 392         for (ParIterator it = par_iterator_begin(in); it != end; ++it) {
 393                 string const name = it->layout()->name();
 394                 bool hasLayout = tclass2.hasLayout(name);
 395
 396                 if (hasLayout)
 397                         it->layout(tclass2[name]);
 398                 else
 399                         it->layout(tclass2.defaultLayout());
 400
 401                 if (!hasLayout && name != tclass1.defaultLayoutName()) {
 402                         string const s = bformat(
 403                                 _("Layout had to be changed from\n%1$s to %2$s\n"
 404                                 "because of class conversion from\n%3$s to %4$s"),
 405                          name, it->layout()->name(), tclass1.name(), tclass2.name());
 406                         // To warn the user that something had to be done.
 407                         errorlist.push_back(ErrorItem(_("Changed Layout"), s,
 408                                                       it->id(), 0,
 409                                                       it->size()));
 410                 }
 411         }
 412
 413         // character styles
 414         InsetIterator const i_end = inset_iterator_end(in);
 415         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 416                 if (it->lyxCode() == InsetBase::CHARSTYLE_CODE) {
 417                         InsetCharStyle & inset =
 418                                 static_cast<InsetCharStyle &>(*it);
 419                         string const name = inset.params().type;
 420                         CharStyles::iterator const found_cs =
 421                                 tclass2.charstyle(name);
 422                         if (found_cs == tclass2.charstyles().end()) {
 423                                 // The character style is undefined in tclass2
 424                                 inset.setUndefined();
 425                                 string const s = bformat(_(
 426                                         "Character style %1$s is "
 427                                         "undefined because of class "
 428                                         "conversion from\n%2$s to %3$s"),
 429                                          name, tclass1.name(), tclass2.name());
 430                                 // To warn the user that something had to be done.
 431                                 errorlist.push_back(ErrorItem(
 432                                                 _("Undefined character style"),
 433                                                 s, it.paragraph().id(),
 434                                                 it.pos(), it.pos() + 1));
 435                         } else if (inset.undefined()) {
 436                                 // The character style is undefined in
 437                                 // tclass1 and is defined in tclass2
 438                                 inset.setDefined(found_cs);
 439                         }
 440                 }
 441         }
 442
 443         std::swap(in.paragraphs(), pars);
 444 }
 445
 446
 447 std::vector<string> const availableSelections(Buffer const & buffer)
 448 {
 449         vector<string> selList;
 450
 451         CutStack::const_iterator cit = theCuts.begin();
 452         CutStack::const_iterator end = theCuts.end();
 453         for (; cit != end; ++cit) {
 454                 // we do not use cit-> here because gcc 2.9x does not
 455                 // like it (JMarc)
 456                 ParagraphList const & pars = (*cit).first;
 457                 string asciiSel;
 458                 ParagraphList::const_iterator pit = pars.begin();
 459                 ParagraphList::const_iterator pend = pars.end();
 460                 for (; pit != pend; ++pit) {
 461                         asciiSel += pit->asString(buffer, false);
 462                         if (asciiSel.size() > 25) {
 463                                 asciiSel.replace(22, string::npos, "...");
 464                                 break;
 465                         }
 466                 }
 467
 468                 selList.push_back(asciiSel);
 469         }
 470
 471         return selList;
 472 }
 473
 474
 475 lyx::size_type numberOfSelections()
 476 {
 477         return theCuts.size();
 478 }
 479
 480
 481 void cutSelection(LCursor & cur, bool doclear, bool realcut)
 482 {
 483         // This doesn't make sense, if there is no selection
 484         if (!cur.selection())
 485                 return;
 486
 487         // OK, we have a selection. This is always between cur.selBegin()
 488         // and cur.selEnd()
 489
 490         if (cur.inTexted()) {
 491                 LyXText * text = cur.text();
 492                 BOOST_ASSERT(text);
 493                 // Stuff what we got on the clipboard. Even if there is no selection.
 494
 495                 // There is a problem with having the stuffing here in that the
 496                 // larger the selection the slower LyX will get. This can be
 497                 // solved by running the line below only when the selection has
 498                 // finished. The solution used currently just works, to make it
 499                 // faster we need to be more clever and probably also have more
 500                 // calls to stuffClipboard. (Lgb)
 501 //              cur.bv().stuffClipboard(cur.selectionAsString(true));
 502
 503                 // make sure that the depth behind the selection are restored, too
 504                 recordUndoSelection(cur);
 505                 pit_type begpit = cur.selBegin().pit();
 506                 pit_type endpit = cur.selEnd().pit();
 507
 508                 int endpos = cur.selEnd().pos();
 509
 510                 BufferParams const & bp = cur.buffer().params();
 511                 if (realcut) {
 512                         copySelectionHelper(text->paragraphs(),
 513                                 begpit, endpit,
 514                                 cur.selBegin().pos(), endpos,
 515                                 bp.textclass);
 516                 }
 517
 518                 boost::tie(endpit, endpos) =
 519                         eraseSelectionHelper(bp,
 520                                 text->paragraphs(),
 521                                 begpit, endpit,
 522                                 cur.selBegin().pos(), endpos,
 523                                 doclear);
 524
 525                 // sometimes necessary
 526                 if (doclear)
 527                         text->paragraphs()[begpit].stripLeadingSpaces();
 528
 529                 // cutSelection can invalidate the cursor so we need to set
 530                 // it anew. (Lgb)
 531                 // we prefer the end for when tracking changes
 532                 cur.pos() = endpos;
 533                 cur.pit() = endpit;
 534
 535                 // need a valid cursor. (Lgb)
 536                 cur.clearSelection();
 537                 updateCounters(cur.buffer());
 538
 539                 // tell tabular that a recent copy happened
 540                 dirtyTabularStack(false);
 541         }
 542
 543         if (cur.inMathed()) {
 544                 if (cur.selBegin().idx() != cur.selEnd().idx()) {
 545                         // The current selection spans more than one cell.
 546                         // Record all cells
 547                         recordUndoInset(cur);
 548                 } else {
 549                         // Record only the current cell to avoid a jumping
 550                         // cursor after undo
 551                         recordUndo(cur);
 552                 }
 553                 if (realcut)
 554                         copySelection(cur);
 555                 eraseSelection(cur);
 556         }
 557 }
 558
 559
 560 void copySelection(LCursor & cur)
 561 {
 562         // stuff the selection onto the X clipboard, from an explicit copy request
 563         cur.bv().stuffClipboard(cur.selectionAsString(true));
 564
 565         // this doesn't make sense, if there is no selection
 566         if (!cur.selection())
 567                 return;
 568
 569         if (cur.inTexted()) {
 570                 LyXText * text = cur.text();
 571                 BOOST_ASSERT(text);
 572                 // ok we have a selection. This is always between cur.selBegin()
 573                 // and sel_end cursor
 574
 575                 // copy behind a space if there is one
 576                 ParagraphList & pars = text->paragraphs();
 577                 pos_type pos = cur.selBegin().pos();
 578                 pit_type par = cur.selBegin().pit();
 579                 while (pos < pars[par].size()
 580                                          && pars[par].isLineSeparator(pos)
 581                                          && (par != cur.selEnd().pit() || pos < cur.selEnd().pos()))
 582                         ++pos;
 583
 584                 copySelectionHelper(pars, par, cur.selEnd().pit(),
 585                         pos, cur.selEnd().pos(), cur.buffer().params().textclass);
 586         }
 587
 588         if (cur.inMathed()) {
 589                 lyxerr << "copySelection in mathed" << endl;
 590                 ParagraphList pars;
 591                 pars.push_back(Paragraph());
 592                 BufferParams const & bp = cur.buffer().params();
 593                 pars.back().layout(bp.getLyXTextClass().defaultLayout());
 594                 for_each(pars.begin(), pars.end(), resetOwnerAndChanges());
 595                 pars.back().insert(0, grabSelection(cur), LyXFont());
 596                 theCuts.push(make_pair(pars, bp.textclass));
 597         }
 598         // tell tabular that a recent copy happened
 599         dirtyTabularStack(false);
 600 }
 601
 602
 603 std::string getSelection(Buffer const & buf, size_t sel_index)
 604 {
 605         return sel_index < theCuts.size()
 606                 ? theCuts[sel_index].first.back().asString(buf, false)
 607                 : string();
 608 }
 609
 610
 611 void pasteSelection(LCursor & cur, size_t sel_index)
 612 {
 613         // this does not make sense, if there is nothing to paste
 614         lyxerr << "#### pasteSelection " << sel_index << endl;
 615         if (!checkPastePossible(sel_index))
 616                 return;
 617
 618         if (cur.inTexted()) {
 619                 LyXText * text = cur.text();
 620                 BOOST_ASSERT(text);
 621
 622                 recordUndo(cur);
 623
 624                 pit_type endpit;
 625                 PitPosPair ppp;
 626
 627                 ErrorList el;
 628
 629                 boost::tie(ppp, endpit) =
 630                         pasteSelectionHelper(cur.buffer(),
 631                                              text->paragraphs(),
 632                                              cur.pit(), cur.pos(),
 633                                              cur.buffer().params().textclass,
 634                                              sel_index, el);
 635                 bufferErrors(cur.buffer(), el);
 636                 cur.bv().showErrorList(_("Paste"));
 637
 638                 cur.clearSelection();
 639                 text->setCursor(cur, ppp.first, ppp.second);
 640                 cur.setSelection();
 641                 updateCounters(cur.buffer());
 642         }
 643
 644         // mathed is handled in MathNestInset/MathGridInset
 645         BOOST_ASSERT(!cur.inMathed());
 646 }
 647
 648
 649 void setSelectionRange(LCursor & cur, pos_type length)
 650 {
 651         LyXText * text = cur.text();
 652         BOOST_ASSERT(text);
 653         if (!length)
 654                 return;
 655         cur.resetAnchor();
 656         while (length--)
 657                 text->cursorRight(cur);
 658         cur.setSelection();
 659 }
 660
 661
 662 // simple replacing. The font of the first selected character is used
 663 void replaceSelectionWithString(LCursor & cur, string const & str)
 664 {
 665         LyXText * text = cur.text();
 666         BOOST_ASSERT(text);
 667         recordUndo(cur);
 668
 669         // Get font setting before we cut
 670         pos_type pos = cur.selEnd().pos();
 671         Paragraph & par = text->getPar(cur.selEnd().pit());
 672         LyXFont const font =
 673                 par.getFontSettings(cur.buffer().params(), cur.selBegin().pos());
 674
 675         // Insert the new string
 676         string::const_iterator cit = str.begin();
 677         string::const_iterator end = str.end();
 678         for (; cit != end; ++cit, ++pos)
 679                 par.insertChar(pos, (*cit), font);
 680
 681         // Cut the selection
 682         cutSelection(cur, true, false);
 683 }
 684
 685
 686 void replaceSelection(LCursor & cur)
 687 {
 688         if (cur.selection())
 689                 cutSelection(cur, true, false);
 690 }
 691
 692
 693 // only used by the spellchecker
 694 void replaceWord(LCursor & cur, string const & replacestring)
 695 {
 696         LyXText * text = cur.text();
 697         BOOST_ASSERT(text);
 698
 699         replaceSelectionWithString(cur, replacestring);
 700         setSelectionRange(cur, replacestring.length());
 701
 702         // Go back so that replacement string is also spellchecked
 703         for (string::size_type i = 0; i < replacestring.length() + 1; ++i)
 704                 text->cursorLeft(cur);
 705 }
 706
 707
 708 void eraseSelection(LCursor & cur)
 709 {
 710         //lyxerr << "LCursor::eraseSelection begin: " << cur << endl;
 711         CursorSlice const & i1 = cur.selBegin();
 712         CursorSlice const & i2 = cur.selEnd();
 713         if (i1.inset().asMathInset()) {
 714                 cur.top() = i1;
 715                 if (i1.idx() == i2.idx()) {
 716                         i1.cell().erase(i1.pos(), i2.pos());
 717                         // We may have deleted i1.cell(cur.pos()).
 718                         // Make sure that pos is valid.
 719                         if (cur.pos() > cur.lastpos())
 720                                 cur.pos() = cur.lastpos();
 721                 } else {
 722                         MathInset * p = i1.asMathInset();
 723                         InsetBase::row_type r1, r2;
 724                         InsetBase::col_type c1, c2;
 725                         region(i1, i2, r1, r2, c1, c2);
 726                         for (InsetBase::row_type row = r1; row <= r2; ++row)
 727                                 for (InsetBase::col_type col = c1; col <= c2; ++col)
 728                                         p->cell(p->index(row, col)).clear();
 729                         // We've deleted the whole cell. Only pos 0 is valid.
 730                         cur.pos() = 0;
 731                 }
 732                 // need a valid cursor. (Lgb)
 733                 cur.clearSelection();
 734         } else {
 735                 lyxerr << "can't erase this selection 1" << endl;
 736         }
 737         //lyxerr << "LCursor::eraseSelection end: " << cur << endl;
 738 }
 739
 740
 741 void selDel(LCursor & cur)
 742 {
 743         //lyxerr << "LCursor::selDel" << endl;
 744         if (cur.selection())
 745                 eraseSelection(cur);
 746 }
 747
 748
 749 void selClearOrDel(LCursor & cur)
 750 {
 751         //lyxerr << "LCursor::selClearOrDel" << endl;
 752         if (lyxrc.auto_region_delete)
 753                 selDel(cur);
 754         else
 755                 cur.selection() = false;
 756 }
 757
 758
 759 string grabSelection(LCursor const & cur)
 760 {
 761         if (!cur.selection())
 762                 return string();
 763
 764         // FIXME: What is wrong with the following?
 765 #if 0
 766         std::ostringstream os;
 767         for (DocIterator dit = cur.selectionBegin();
 768              dit != cur.selectionEnd(); dit.forwardPos())
 769                 os << asString(dit.cell());
 770         return os.str();
 771 #endif
 772
 773         CursorSlice i1 = cur.selBegin();
 774         CursorSlice i2 = cur.selEnd();
 775
 776         if (i1.idx() == i2.idx()) {
 777                 if (i1.inset().asMathInset()) {
 778                         MathArray::const_iterator it = i1.cell().begin();
 779                         return asString(MathArray(it + i1.pos(), it + i2.pos()));
 780                 } else {
 781                         return "unknown selection 1";
 782                 }
 783         }
 784
 785         InsetBase::row_type r1, r2;
 786         InsetBase::col_type c1, c2;
 787         region(i1, i2, r1, r2, c1, c2);
 788
 789         string data;
 790         if (i1.inset().asMathInset()) {
 791                 for (InsetBase::row_type row = r1; row <= r2; ++row) {
 792                         if (row > r1)
 793                                 data += "\\\\";
 794                         for (InsetBase::col_type col = c1; col <= c2; ++col) {
 795                                 if (col > c1)
 796                                         data += '&';
 797                                 data += asString(i1.asMathInset()->
 798                                         cell(i1.asMathInset()->index(row, col)));
 799                         }
 800                 }
 801         } else {
 802                 data = "unknown selection 2";
 803         }
 804         return data;
 805 }
 806
 807
 808 void dirtyTabularStack(bool b)
 809 {
 810         dirty_tabular_stack_ = b;
 811 }
 812
 813
 814 bool tabularStackDirty()
 815 {
 816         return dirty_tabular_stack_;
 817 }
 818
 819
 820 } // namespace cap
 821 } // namespace lyx