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