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