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