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                 // reset change tracking status
 177                 if (buffer.params().tracking_changes)
 178                         tmpbuf->cleanChanges(Paragraph::trackingOn);
 179                 else
 180                         tmpbuf->cleanChanges(Paragraph::trackingOff);
 181         }
 182
 183         bool const empty = pars[pit].empty();
 184         if (!empty) {
 185                 // Make the buf exactly the same layout as the cursor
 186                 // paragraph.
 187                 insertion.begin()->makeSameLayout(pars[pit]);
 188         }
 189
 190         // Prepare the paragraphs and insets for insertion.
 191         // A couple of insets store buffer references so need updating.
 192         InsetText in;
 193         std::swap(in.paragraphs(), insertion);
 194
 195         ParIterator fpit = par_iterator_begin(in);
 196         ParIterator fend = par_iterator_end(in);
 197
 198         for (; fpit != fend; ++fpit) {
 199                 InsetList::iterator lit = fpit->insetlist.begin();
 200                 InsetList::iterator eit = fpit->insetlist.end();
 201
 202                 for (; lit != eit; ++lit) {
 203                         switch (lit->inset->lyxCode()) {
 204                         case InsetBase::TABULAR_CODE: {
 205                                 InsetTabular * it = static_cast<InsetTabular*>(lit->inset);
 206                                 it->buffer(&buffer);
 207                                 break;
 208                         }
 209
 210                         default:
 211                                 break; // nothing
 212                         }
 213                 }
 214         }
 215         std::swap(in.paragraphs(), insertion);
 216
 217         // Split the paragraph for inserting the buf if necessary.
 218         if (!empty)
 219                 breakParagraphConservative(buffer.params(), pars, pit, pos);
 220
 221         // Paste it!
 222         if (empty) {
 223                 pars.insert(boost::next(pars.begin(), pit),
 224                             insertion.begin(),
 225                             insertion.end());
 226
 227                 // merge the empty par with the last par of the insertion
 228                 mergeParagraph(buffer.params(), pars,
 229                                pit + insertion.size() - 1);
 230         } else {
 231                 pars.insert(boost::next(pars.begin(), pit + 1),
 232                             insertion.begin(),
 233                             insertion.end());
 234
 235                 // merge the first par of the insertion with the current par
 236                 mergeParagraph(buffer.params(), pars, pit);
 237         }
 238
 239         pit_type last_paste = pit + insertion.size() - 1;
 240
 241         // Store the new cursor position.
 242         pit = last_paste;
 243         pos = pars[last_paste].size();
 244
 245         // Join (conditionally) last pasted paragraph with next one, i.e.,
 246         // the tail of the spliced document paragraph
 247         if (!empty && last_paste + 1 != pit_type(pars.size())) {
 248                 if (pars[last_paste + 1].hasSameLayout(pars[last_paste])) {
 249                         mergeParagraph(buffer.params(), pars, last_paste);
 250                 } else if (pars[last_paste + 1].empty()) {
 251                         pars[last_paste + 1].makeSameLayout(pars[last_paste]);
 252                         mergeParagraph(buffer.params(), pars, last_paste);
 253                 } else if (pars[last_paste].empty()) {
 254                         pars[last_paste].makeSameLayout(pars[last_paste + 1]);
 255                         mergeParagraph(buffer.params(), pars, last_paste);
 256                 } else {
 257                         pars[last_paste + 1].stripLeadingSpaces();
 258                         ++last_paste;
 259                 }
 260         }
 261
 262         return make_pair(PitPosPair(pit, pos), last_paste + 1);
 263 }
 264
 265
 266 PitPosPair eraseSelectionHelper(BufferParams const & params,
 267         ParagraphList & pars,
 268         pit_type startpit, pit_type endpit,
 269         int startpos, int endpos, bool doclear)
 270 {
 271         // Start of selection is really invalid.
 272         if (startpit == pit_type(pars.size()) ||
 273             (startpos > pars[startpit].size()))
 274                 return PitPosPair(endpit, endpos);
 275
 276         // Start and end is inside same paragraph
 277         if (endpit == pit_type(pars.size()) ||
 278             startpit == endpit) {
 279                 endpos -= pars[startpit].erase(startpos, endpos);
 280                 return PitPosPair(endpit, endpos);
 281         }
 282
 283         // A paragraph break has to be physically removed by merging, but
 284         // only if either (1) change tracking is off, or (2) the para break
 285         // is "blue"
 286         for (pit_type pit = startpit; pit != endpit + 1;) {
 287                 bool const merge = !params.tracking_changes ||
 288                         pars[pit].lookupChange(pars[pit].size()) ==
 289                         Change::INSERTED;
 290                 pos_type const left  = ( pit == startpit ? startpos : 0 );
 291                 pos_type const right = ( pit == endpit ? endpos :
 292                                 pars[pit].size() + 1 );
 293                 // Logical erase only:
 294                 pars[pit].erase(left, right);
 295                 // Separate handling of para break:
 296                 if (merge && pit != endpit &&
 297                    pars[pit].hasSameLayout(pars[pit + 1])) {
 298                         pos_type const thissize = pars[pit].size();
 299                         if (doclear)
 300                                 pars[pit + 1].stripLeadingSpaces();
 301                         mergeParagraph(params, pars, pit);
 302                         --endpit;
 303                         if (pit == endpit)
 304                                 endpos += thissize;
 305                 } else
 306                         ++pit;
 307         }
 308
 309         // Ensure legal cursor pos:
 310         endpit = startpit;
 311         endpos = startpos;
 312         return PitPosPair(endpit, endpos);
 313 }
 314
 315
 316 void copySelectionHelper(ParagraphList & pars,
 317         pit_type startpit, pit_type endpit,
 318         int start, int end, textclass_type tc)
 319 {
 320         BOOST_ASSERT(0 <= start && start <= pars[startpit].size());
 321         BOOST_ASSERT(0 <= end && end <= pars[endpit].size());
 322         BOOST_ASSERT(startpit != endpit || start <= end);
 323
 324         // Clone the paragraphs within the selection.
 325         ParagraphList paragraphs(boost::next(pars.begin(), startpit),
 326                                  boost::next(pars.begin(), endpit + 1));
 327
 328         for_each(paragraphs.begin(), paragraphs.end(), resetOwnerAndChanges());
 329
 330         // Cut out the end of the last paragraph.
 331         Paragraph & back = paragraphs.back();
 332         back.erase(end, back.size());
 333
 334         // Cut out the begin of the first paragraph
 335         Paragraph & front = paragraphs.front();
 336         front.erase(0, start);
 337
 338         theCuts.push(make_pair(paragraphs, tc));
 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         return res;
 356 }
 357
 358
 359 void switchBetweenClasses(textclass_type c1, textclass_type c2,
 360         ParagraphList & pars, ErrorList & errorlist)
 361 {
 362         BOOST_ASSERT(!pars.empty());
 363         if (c1 == c2)
 364                 return;
 365
 366         LyXTextClass const & tclass1 = textclasslist[c1];
 367         LyXTextClass const & tclass2 = textclasslist[c2];
 368
 369         InsetText in;
 370         std::swap(in.paragraphs(), pars);
 371
 372         // layouts
 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                         string const s = bformat(
 385                                 _("Layout had to be changed from\n%1$s to %2$s\n"
 386                                 "because of class conversion from\n%3$s to %4$s"),
 387                          name, it->layout()->name(), tclass1.name(), tclass2.name());
 388                         // To warn the user that something had to be done.
 389                         errorlist.push_back(ErrorItem(_("Changed Layout"), s,
 390                                                       it->id(), 0,
 391                                                       it->size()));
 392                 }
 393         }
 394
 395         // character styles
 396         InsetIterator const i_end = inset_iterator_end(in);
 397         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 398                 if (it->lyxCode() == InsetBase::CHARSTYLE_CODE) {
 399                         InsetCharStyle & inset =
 400                                 static_cast<InsetCharStyle &>(*it);
 401                         string const name = inset.params().type;
 402                         CharStyles::iterator const found_cs =
 403                                 tclass2.charstyle(name);
 404                         if (found_cs == tclass2.charstyles().end()) {
 405                                 // The character style is undefined in tclass2
 406                                 inset.setUndefined();
 407                                 string const s = bformat(_(
 408                                         "Character style %1$s is "
 409                                         "undefined because of class "
 410                                         "conversion from\n%2$s to %3$s"),
 411                                          name, tclass1.name(), tclass2.name());
 412                                 // To warn the user that something had to be done.
 413                                 errorlist.push_back(ErrorItem(
 414                                                 _("Undefined character style"),
 415                                                 s, it.paragraph().id(),
 416                                                 it.pos(), it.pos() + 1));
 417                         } else if (inset.undefined()) {
 418                                 // The character style is undefined in
 419                                 // tclass1 and is defined in tclass2
 420                                 inset.setDefined(found_cs);
 421                         }
 422                 }
 423         }
 424
 425         std::swap(in.paragraphs(), pars);
 426 }
 427
 428
 429 std::vector<string> const availableSelections(Buffer const & buffer)
 430 {
 431         vector<string> selList;
 432
 433         CutStack::const_iterator cit = theCuts.begin();
 434         CutStack::const_iterator end = theCuts.end();
 435         for (; cit != end; ++cit) {
 436                 // we do not use cit-> here because gcc 2.9x does not
 437                 // like it (JMarc)
 438                 ParagraphList const & pars = (*cit).first;
 439                 string asciiSel;
 440                 ParagraphList::const_iterator pit = pars.begin();
 441                 ParagraphList::const_iterator pend = pars.end();
 442                 for (; pit != pend; ++pit) {
 443                         asciiSel += pit->asString(buffer, false);
 444                         if (asciiSel.size() > 25) {
 445                                 asciiSel.replace(22, string::npos, "...");
 446                                 break;
 447                         }
 448                 }
 449
 450                 selList.push_back(asciiSel);
 451         }
 452
 453         return selList;
 454 }
 455
 456
 457 lyx::size_type numberOfSelections()
 458 {
 459         return theCuts.size();
 460 }
 461
 462
 463 void cutSelection(LCursor & cur, bool doclear, bool realcut)
 464 {
 465         // This doesn't make sense, if there is no selection
 466         if (!cur.selection())
 467                 return;
 468
 469         // OK, we have a selection. This is always between cur.selBegin()
 470         // and cur.selEnd()
 471
 472         if (cur.inTexted()) {
 473                 LyXText * text = cur.text();
 474                 BOOST_ASSERT(text);
 475                 // Stuff what we got on the clipboard. Even if there is no selection.
 476
 477                 // There is a problem with having the stuffing here in that the
 478                 // larger the selection the slower LyX will get. This can be
 479                 // solved by running the line below only when the selection has
 480                 // finished. The solution used currently just works, to make it
 481                 // faster we need to be more clever and probably also have more
 482                 // calls to stuffClipboard. (Lgb)
 483 //              cur.bv().stuffClipboard(cur.selectionAsString(true));
 484
 485                 // make sure that the depth behind the selection are restored, too
 486                 recordUndoSelection(cur);
 487                 pit_type begpit = cur.selBegin().pit();
 488                 pit_type endpit = cur.selEnd().pit();
 489
 490                 int endpos = cur.selEnd().pos();
 491
 492                 BufferParams const & bp = cur.buffer().params();
 493                 if (realcut) {
 494                         copySelectionHelper(text->paragraphs(),
 495                                 begpit, endpit,
 496                                 cur.selBegin().pos(), endpos,
 497                                 bp.textclass);
 498                 }
 499
 500                 boost::tie(endpit, endpos) =
 501                         eraseSelectionHelper(bp,
 502                                 text->paragraphs(),
 503                                 begpit, endpit,
 504                                 cur.selBegin().pos(), endpos,
 505                                 doclear);
 506
 507                 // sometimes necessary
 508                 if (doclear)
 509                         text->paragraphs()[begpit].stripLeadingSpaces();
 510
 511                 // cutSelection can invalidate the cursor so we need to set
 512                 // it anew. (Lgb)
 513                 // we prefer the end for when tracking changes
 514                 cur.pos() = endpos;
 515                 cur.pit() = endpit;
 516
 517                 // need a valid cursor. (Lgb)
 518                 cur.clearSelection();
 519                 updateLabels(cur.buffer());
 520
 521                 // tell tabular that a recent copy happened
 522                 dirtyTabularStack(false);
 523         }
 524
 525         if (cur.inMathed()) {
 526                 if (cur.selBegin().idx() != cur.selEnd().idx()) {
 527                         // The current selection spans more than one cell.
 528                         // Record all cells
 529                         recordUndoInset(cur);
 530                 } else {
 531                         // Record only the current cell to avoid a jumping
 532                         // cursor after undo
 533                         recordUndo(cur);
 534                 }
 535                 if (realcut)
 536                         copySelection(cur);
 537                 eraseSelection(cur);
 538         }
 539 }
 540
 541
 542 void copySelection(LCursor & cur)
 543 {
 544         // stuff the selection onto the X clipboard, from an explicit copy request
 545         cur.bv().stuffClipboard(cur.selectionAsString(true));
 546
 547         // this doesn't make sense, if there is no selection
 548         if (!cur.selection())
 549                 return;
 550
 551         if (cur.inTexted()) {
 552                 LyXText * text = cur.text();
 553                 BOOST_ASSERT(text);
 554                 // ok we have a selection. This is always between cur.selBegin()
 555                 // and sel_end cursor
 556
 557                 // copy behind a space if there is one
 558                 ParagraphList & pars = text->paragraphs();
 559                 pos_type pos = cur.selBegin().pos();
 560                 pit_type par = cur.selBegin().pit();
 561                 while (pos < pars[par].size()
 562                                          && pars[par].isLineSeparator(pos)
 563                                          && (par != cur.selEnd().pit() || pos < cur.selEnd().pos()))
 564                         ++pos;
 565
 566                 copySelectionHelper(pars, par, cur.selEnd().pit(),
 567                         pos, cur.selEnd().pos(), cur.buffer().params().textclass);
 568         }
 569
 570         if (cur.inMathed()) {
 571                 lyxerr << "copySelection in mathed" << endl;
 572                 ParagraphList pars;
 573                 pars.push_back(Paragraph());
 574                 BufferParams const & bp = cur.buffer().params();
 575                 pars.back().layout(bp.getLyXTextClass().defaultLayout());
 576                 for_each(pars.begin(), pars.end(), resetOwnerAndChanges());
 577                 pars.back().insert(0, grabSelection(cur), LyXFont());
 578                 theCuts.push(make_pair(pars, bp.textclass));
 579         }
 580         // tell tabular that a recent copy happened
 581         dirtyTabularStack(false);
 582 }
 583
 584
 585 std::string getSelection(Buffer const & buf, size_t sel_index)
 586 {
 587         return sel_index < theCuts.size()
 588                 ? theCuts[sel_index].first.back().asString(buf, false)
 589                 : string();
 590 }
 591
 592
 593 void pasteParagraphList(LCursor & cur, ParagraphList const & parlist,
 594                         textclass_type textclass)
 595 {
 596         if (cur.inTexted()) {
 597                 LyXText * text = cur.text();
 598                 BOOST_ASSERT(text);
 599
 600                 recordUndo(cur);
 601
 602                 pit_type endpit;
 603                 PitPosPair ppp;
 604                 ErrorList el;
 605
 606                 boost::tie(ppp, endpit) =
 607                         pasteSelectionHelper(cur.buffer(),
 608                                              text->paragraphs(),
 609                                              cur.pit(), cur.pos(),
 610                                              parlist, textclass,
 611                                              el);
 612                 bufferErrors(cur.buffer(), el);
 613                 updateLabels(cur.buffer());
 614                 cur.clearSelection();
 615                 text->setCursor(cur, ppp.first, ppp.second);
 616         }
 617
 618         // mathed is handled in MathNestInset/MathGridInset
 619         BOOST_ASSERT(!cur.inMathed());
 620 }
 621
 622
 623 void pasteSelection(LCursor & cur, size_t sel_index)
 624 {
 625         // this does not make sense, if there is nothing to paste
 626         if (!checkPastePossible(sel_index))
 627                 return;
 628
 629         pasteParagraphList(cur, theCuts[sel_index].first,
 630                            theCuts[sel_index].second);
 631         cur.bv().showErrorList(_("Paste"));
 632         cur.setSelection();
 633 }
 634
 635
 636 void setSelectionRange(LCursor & cur, pos_type length)
 637 {
 638         LyXText * text = cur.text();
 639         BOOST_ASSERT(text);
 640         if (!length)
 641                 return;
 642         cur.resetAnchor();
 643         while (length--)
 644                 text->cursorRight(cur);
 645         cur.setSelection();
 646 }
 647
 648
 649 // simple replacing. The font of the first selected character is used
 650 void replaceSelectionWithString(LCursor & cur, string const & str)
 651 {
 652         LyXText * text = cur.text();
 653         BOOST_ASSERT(text);
 654         recordUndo(cur);
 655
 656         // Get font setting before we cut
 657         pos_type pos = cur.selEnd().pos();
 658         Paragraph & par = text->getPar(cur.selEnd().pit());
 659         LyXFont const font =
 660                 par.getFontSettings(cur.buffer().params(), cur.selBegin().pos());
 661
 662         // Insert the new string
 663         string::const_iterator cit = str.begin();
 664         string::const_iterator end = str.end();
 665         for (; cit != end; ++cit, ++pos)
 666                 par.insertChar(pos, (*cit), font);
 667
 668         // Cut the selection
 669         cutSelection(cur, true, false);
 670 }
 671
 672
 673 void replaceSelection(LCursor & cur)
 674 {
 675         if (cur.selection())
 676                 cutSelection(cur, true, false);
 677 }
 678
 679
 680 // only used by the spellchecker
 681 void replaceWord(LCursor & cur, string const & replacestring)
 682 {
 683         LyXText * text = cur.text();
 684         BOOST_ASSERT(text);
 685
 686         replaceSelectionWithString(cur, replacestring);
 687         setSelectionRange(cur, replacestring.length());
 688
 689         // Go back so that replacement string is also spellchecked
 690         for (string::size_type i = 0; i < replacestring.length() + 1; ++i)
 691                 text->cursorLeft(cur);
 692 }
 693
 694
 695 void eraseSelection(LCursor & cur)
 696 {
 697         //lyxerr << "LCursor::eraseSelection begin: " << cur << endl;
 698         CursorSlice const & i1 = cur.selBegin();
 699         CursorSlice const & i2 = cur.selEnd();
 700         if (i1.inset().asMathInset()) {
 701                 cur.top() = i1;
 702                 if (i1.idx() == i2.idx()) {
 703                         i1.cell().erase(i1.pos(), i2.pos());
 704                         // We may have deleted i1.cell(cur.pos()).
 705                         // Make sure that pos is valid.
 706                         if (cur.pos() > cur.lastpos())
 707                                 cur.pos() = cur.lastpos();
 708                 } else {
 709                         MathInset * p = i1.asMathInset();
 710                         InsetBase::row_type r1, r2;
 711                         InsetBase::col_type c1, c2;
 712                         region(i1, i2, r1, r2, c1, c2);
 713                         for (InsetBase::row_type row = r1; row <= r2; ++row)
 714                                 for (InsetBase::col_type col = c1; col <= c2; ++col)
 715                                         p->cell(p->index(row, col)).clear();
 716                         // We've deleted the whole cell. Only pos 0 is valid.
 717                         cur.pos() = 0;
 718                 }
 719                 // need a valid cursor. (Lgb)
 720                 cur.clearSelection();
 721         } else {
 722                 lyxerr << "can't erase this selection 1" << endl;
 723         }
 724         //lyxerr << "LCursor::eraseSelection end: " << cur << endl;
 725 }
 726
 727
 728 void selDel(LCursor & cur)
 729 {
 730         //lyxerr << "LCursor::selDel" << endl;
 731         if (cur.selection())
 732                 eraseSelection(cur);
 733 }
 734
 735
 736 void selClearOrDel(LCursor & cur)
 737 {
 738         //lyxerr << "LCursor::selClearOrDel" << endl;
 739         if (lyxrc.auto_region_delete)
 740                 selDel(cur);
 741         else
 742                 cur.selection() = false;
 743 }
 744
 745
 746 string grabSelection(LCursor const & cur)
 747 {
 748         if (!cur.selection())
 749                 return string();
 750
 751         // FIXME: What is wrong with the following?
 752 #if 0
 753         std::ostringstream os;
 754         for (DocIterator dit = cur.selectionBegin();
 755              dit != cur.selectionEnd(); dit.forwardPos())
 756                 os << asString(dit.cell());
 757         return os.str();
 758 #endif
 759
 760         CursorSlice i1 = cur.selBegin();
 761         CursorSlice i2 = cur.selEnd();
 762
 763         if (i1.idx() == i2.idx()) {
 764                 if (i1.inset().asMathInset()) {
 765                         MathArray::const_iterator it = i1.cell().begin();
 766                         return asString(MathArray(it + i1.pos(), it + i2.pos()));
 767                 } else {
 768                         return "unknown selection 1";
 769                 }
 770         }
 771
 772         InsetBase::row_type r1, r2;
 773         InsetBase::col_type c1, c2;
 774         region(i1, i2, r1, r2, c1, c2);
 775
 776         string data;
 777         if (i1.inset().asMathInset()) {
 778                 for (InsetBase::row_type row = r1; row <= r2; ++row) {
 779                         if (row > r1)
 780                                 data += "\\\\";
 781                         for (InsetBase::col_type col = c1; col <= c2; ++col) {
 782                                 if (col > c1)
 783                                         data += '&';
 784                                 data += asString(i1.asMathInset()->
 785                                         cell(i1.asMathInset()->index(row, col)));
 786                         }
 787                 }
 788         } else {
 789                 data = "unknown selection 2";
 790         }
 791         return data;
 792 }
 793
 794
 795 void dirtyTabularStack(bool b)
 796 {
 797         dirty_tabular_stack_ = b;
 798 }
 799
 800
 801 bool tabularStackDirty()
 802 {
 803         return dirty_tabular_stack_;
 804 }
 805
 806
 807 } // namespace cap
 808 } // namespace lyx