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