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 "language.h"
  28 #include "lfuns.h"
  29 #include "lyxrc.h"
  30 #include "lyxtext.h"
  31 #include "lyxtextclasslist.h"
  32 #include "paragraph.h"
  33 #include "paragraph_funcs.h"
  34 #include "ParagraphParameters.h"
  35 #include "ParagraphList_fwd.h"
  36 #include "pariterator.h"
  37 #include "undo.h"
  38
  39 #include "insets/insetcharstyle.h"
  40 #include "insets/insettabular.h"
  41
  42 #include "mathed/math_data.h"
  43 #include "mathed/math_inset.h"
  44 #include "mathed/math_support.h"
  45
  46 #include "support/lstrings.h"
  47
  48 #include <boost/tuple/tuple.hpp>
  49
  50 using lyx::pos_type;
  51 using lyx::pit_type;
  52 using lyx::textclass_type;
  53
  54 using lyx::support::bformat;
  55
  56 using std::endl;
  57 using std::for_each;
  58 using std::make_pair;
  59 using std::pair;
  60 using std::vector;
  61 using std::string;
  62
  63
  64 namespace {
  65
  66 typedef std::pair<lyx::pit_type, int> PitPosPair;
  67
  68 typedef limited_stack<pair<ParagraphList, textclass_type> > CutStack;
  69
  70 CutStack theCuts(10);
  71
  72 // store whether the tabular stack is newer than the normal copy stack
  73 // FIXME: this is a workaround for bug 1919. Should be removed for 1.5,
  74 // when we (hopefully) have a one-for-all paste mechanism.
  75 bool dirty_tabular_stack_;
  76
  77 class resetParagraph : public std::unary_function<Paragraph, Buffer const &> {
  78 public:
  79         resetParagraph(Buffer const & b) : buffer_(b) {}
  80         void operator()(Paragraph & p) const {
  81                 p.cleanChanges();
  82                 // ERT paragraphs have the Language latex_language.
  83                 // This is invalid outside of ERT, so we need to change it
  84                 // to the buffer language.
  85                 if (p.ownerCode() == InsetBase::ERT_CODE) {
  86                         p.changeLanguage(buffer_.params(), latex_language,
  87                                          buffer_.getLanguage());
  88                 }
  89                 p.setInsetOwner(0);
  90         }
  91 private:
  92         Buffer const & buffer_;
  93 };
  94
  95
  96 void region(CursorSlice const & i1, CursorSlice const & i2,
  97         InsetBase::row_type & r1, InsetBase::row_type & r2,
  98         InsetBase::col_type & c1, InsetBase::col_type & c2)
  99 {
 100         InsetBase & p = i1.inset();
 101         c1 = p.col(i1.idx());
 102         c2 = p.col(i2.idx());
 103         if (c1 > c2)
 104                 std::swap(c1, c2);
 105         r1 = p.row(i1.idx());
 106         r2 = p.row(i2.idx());
 107         if (r1 > r2)
 108                 std::swap(r1, r2);
 109 }
 110
 111
 112 bool checkPastePossible(int index)
 113 {
 114         return size_t(index) < theCuts.size() && !theCuts[index].first.empty();
 115 }
 116
 117
 118 pair<PitPosPair, pit_type>
 119 pasteSelectionHelper(Buffer const & buffer,
 120                      ParagraphList & pars, pit_type pit, int pos,
 121                      ParagraphList const & parlist, textclass_type textclass,
 122                      ErrorList & errorlist)
 123 {
 124         if (parlist.empty())
 125                 return make_pair(PitPosPair(pit, pos), pit);
 126
 127         BOOST_ASSERT (pos <= pars[pit].size());
 128
 129         // Make a copy of the CaP paragraphs.
 130         ParagraphList insertion = parlist;
 131         textclass_type const tc = buffer.params().textclass;
 132
 133         // Now remove all out of the pars which is NOT allowed in the
 134         // new environment and set also another font if that is required.
 135
 136         // Convert newline to paragraph break in ERT inset.
 137         // This should not be here!
 138         if (pars[pit].inInset() &&
 139             pars[pit].inInset()->lyxCode() == InsetBase::ERT_CODE) {
 140                 for (ParagraphList::size_type i = 0; i < insertion.size(); ++i) {
 141                         for (pos_type j = 0; j < insertion[i].size(); ++j) {
 142                                 if (insertion[i].isNewline(j)) {
 143                                         insertion[i].erase(j);
 144                                         breakParagraphConservative(
 145                                                         buffer.params(),
 146                                                         insertion, i, j);
 147                                 }
 148                         }
 149                 }
 150         }
 151
 152         // Make sure there is no class difference.
 153         InsetText in;
 154         // This works without copying any paragraph data because we have
 155         // a specialized swap method for ParagraphList. This is important
 156         // since we store pointers to insets at some places and we don't
 157         // want to invalidate them.
 158         insertion.swap(in.paragraphs());
 159         lyx::cap::switchBetweenClasses(textclass, tc, in, errorlist);
 160         insertion.swap(in.paragraphs());
 161
 162         ParagraphList::iterator tmpbuf = insertion.begin();
 163         int depth_delta = pars[pit].params().depth() - tmpbuf->params().depth();
 164
 165         Paragraph::depth_type max_depth = pars[pit].getMaxDepthAfter();
 166
 167         for (; tmpbuf != insertion.end(); ++tmpbuf) {
 168                 // If we have a negative jump so that the depth would
 169                 // go below 0 depth then we have to redo the delta to
 170                 // this new max depth level so that subsequent
 171                 // paragraphs are aligned correctly to this paragraph
 172                 // at level 0.
 173                 if (int(tmpbuf->params().depth()) + depth_delta < 0)
 174                         depth_delta = 0;
 175
 176                 // Set the right depth so that we are not too deep or shallow.
 177                 tmpbuf->params().depth(tmpbuf->params().depth() + depth_delta);
 178                 if (tmpbuf->params().depth() > max_depth)
 179                         tmpbuf->params().depth(max_depth);
 180
 181                 // Only set this from the 2nd on as the 2nd depends
 182                 // for maxDepth still on pit.
 183                 if (tmpbuf != insertion.begin())
 184                         max_depth = tmpbuf->getMaxDepthAfter();
 185
 186                 // Set the inset owner of this paragraph.
 187                 tmpbuf->setInsetOwner(pars[pit].inInset());
 188                 for (pos_type i = 0; i < tmpbuf->size(); ++i) {
 189                         if (tmpbuf->getChar(i) == Paragraph::META_INSET &&
 190                             !pars[pit].insetAllowed(tmpbuf->getInset(i)->lyxCode()))
 191                                 tmpbuf->erase(i--);
 192                 }
 193
 194                 // reset change tracking status
 195                 if (buffer.params().tracking_changes)
 196                         tmpbuf->cleanChanges(Paragraph::trackingOn);
 197                 else
 198                         tmpbuf->cleanChanges(Paragraph::trackingOff);
 199         }
 200
 201         bool const empty = pars[pit].empty();
 202         if (!empty) {
 203                 // Make the buf exactly the same layout as the cursor
 204                 // paragraph.
 205                 insertion.begin()->makeSameLayout(pars[pit]);
 206         }
 207
 208         // Prepare the paragraphs and insets for insertion.
 209         // A couple of insets store buffer references so need updating.
 210         insertion.swap(in.paragraphs());
 211
 212         ParIterator fpit = par_iterator_begin(in);
 213         ParIterator fend = par_iterator_end(in);
 214
 215         for (; fpit != fend; ++fpit) {
 216                 InsetList::iterator lit = fpit->insetlist.begin();
 217                 InsetList::iterator eit = fpit->insetlist.end();
 218
 219                 for (; lit != eit; ++lit) {
 220                         switch (lit->inset->lyxCode()) {
 221                         case InsetBase::TABULAR_CODE: {
 222                                 InsetTabular * it = static_cast<InsetTabular*>(lit->inset);
 223                                 it->buffer(&buffer);
 224                                 break;
 225                         }
 226
 227                         default:
 228                                 break; // nothing
 229                         }
 230                 }
 231         }
 232         insertion.swap(in.paragraphs());
 233
 234         // Split the paragraph for inserting the buf if necessary.
 235         if (!empty)
 236                 breakParagraphConservative(buffer.params(), pars, pit, pos);
 237
 238         // Paste it!
 239         if (empty) {
 240                 pars.insert(boost::next(pars.begin(), pit),
 241                             insertion.begin(),
 242                             insertion.end());
 243
 244                 // merge the empty par with the last par of the insertion
 245                 mergeParagraph(buffer.params(), pars,
 246                                pit + insertion.size() - 1);
 247         } else {
 248                 pars.insert(boost::next(pars.begin(), pit + 1),
 249                             insertion.begin(),
 250                             insertion.end());
 251
 252                 // merge the first par of the insertion with the current par
 253                 mergeParagraph(buffer.params(), pars, pit);
 254         }
 255
 256         pit_type last_paste = pit + insertion.size() - 1;
 257
 258         // Store the new cursor position.
 259         pit = last_paste;
 260         pos = pars[last_paste].size();
 261
 262         // Join (conditionally) last pasted paragraph with next one, i.e.,
 263         // the tail of the spliced document paragraph
 264         if (!empty && last_paste + 1 != pit_type(pars.size())) {
 265                 if (pars[last_paste + 1].hasSameLayout(pars[last_paste])) {
 266                         mergeParagraph(buffer.params(), pars, last_paste);
 267                 } else if (pars[last_paste + 1].empty()) {
 268                         pars[last_paste + 1].makeSameLayout(pars[last_paste]);
 269                         mergeParagraph(buffer.params(), pars, last_paste);
 270                 } else if (pars[last_paste].empty()) {
 271                         pars[last_paste].makeSameLayout(pars[last_paste + 1]);
 272                         mergeParagraph(buffer.params(), pars, last_paste);
 273                 } else {
 274                         pars[last_paste + 1].stripLeadingSpaces();
 275                         ++last_paste;
 276                 }
 277         }
 278
 279         return make_pair(PitPosPair(pit, pos), last_paste + 1);
 280 }
 281
 282
 283 PitPosPair eraseSelectionHelper(BufferParams const & params,
 284         ParagraphList & pars,
 285         pit_type startpit, pit_type endpit,
 286         int startpos, int endpos, bool doclear)
 287 {
 288         // Start of selection is really invalid.
 289         if (startpit == pit_type(pars.size()) ||
 290             (startpos > pars[startpit].size()))
 291                 return PitPosPair(endpit, endpos);
 292
 293         // Start and end is inside same paragraph
 294         if (endpit == pit_type(pars.size()) ||
 295             startpit == endpit) {
 296                 endpos -= pars[startpit].erase(startpos, endpos);
 297                 return PitPosPair(endpit, endpos);
 298         }
 299
 300         // A paragraph break has to be physically removed by merging, but
 301         // only if either (1) change tracking is off, or (2) the para break
 302         // is "blue"
 303         for (pit_type pit = startpit; pit != endpit + 1;) {
 304                 bool const merge = !params.tracking_changes ||
 305                         pars[pit].lookupChange(pars[pit].size()) ==
 306                         Change::INSERTED;
 307                 pos_type const left  = ( pit == startpit ? startpos : 0 );
 308                 pos_type const right = ( pit == endpit ? endpos :
 309                                 pars[pit].size() + 1 );
 310                 // Logical erase only:
 311                 pars[pit].erase(left, right);
 312                 // Separate handling of para break:
 313                 if (merge && pit != endpit &&
 314                    (pit + 1 != endpit || pars[pit].hasSameLayout(pars[pit + 1]))) {
 315                         pos_type const thissize = pars[pit].size();
 316                         if (doclear)
 317                                 pars[pit + 1].stripLeadingSpaces();
 318                         mergeParagraph(params, pars, pit);
 319                         --endpit;
 320                         if (pit == endpit)
 321                                 endpos += thissize;
 322                 } else
 323                         ++pit;
 324         }
 325
 326         // Ensure legal cursor pos:
 327         endpit = startpit;
 328         endpos = startpos;
 329         return PitPosPair(endpit, endpos);
 330 }
 331
 332
 333 void copySelectionHelper(Buffer const & buf, ParagraphList & pars,
 334         pit_type startpit, pit_type endpit,
 335         int start, int end, textclass_type tc)
 336 {
 337         BOOST_ASSERT(0 <= start && start <= pars[startpit].size());
 338         BOOST_ASSERT(0 <= end && end <= pars[endpit].size());
 339         BOOST_ASSERT(startpit != endpit || start <= end);
 340
 341         // Clone the paragraphs within the selection.
 342         ParagraphList paragraphs(boost::next(pars.begin(), startpit),
 343                                  boost::next(pars.begin(), endpit + 1));
 344
 345         for_each(paragraphs.begin(), paragraphs.end(), resetParagraph(buf));
 346
 347         // Cut out the end of the last paragraph.
 348         Paragraph & back = paragraphs.back();
 349         back.erase(end, back.size());
 350
 351         // Cut out the begin of the first paragraph
 352         Paragraph & front = paragraphs.front();
 353         front.erase(0, start);
 354
 355         theCuts.push(make_pair(paragraphs, tc));
 356 }
 357
 358 } // namespace anon
 359
 360
 361
 362
 363 namespace lyx {
 364 namespace cap {
 365
 366 string grabAndEraseSelection(LCursor & cur)
 367 {
 368         if (!cur.selection())
 369                 return string();
 370         string res = grabSelection(cur);
 371         eraseSelection(cur);
 372         return res;
 373 }
 374
 375
 376 void switchBetweenClasses(textclass_type c1, textclass_type c2,
 377         InsetText & in, ErrorList & errorlist)
 378 {
 379         BOOST_ASSERT(!in.paragraphs().empty());
 380         if (c1 == c2)
 381                 return;
 382
 383         LyXTextClass const & tclass1 = textclasslist[c1];
 384         LyXTextClass const & tclass2 = textclasslist[c2];
 385
 386         // layouts
 387         ParIterator end = par_iterator_end(in);
 388         for (ParIterator it = par_iterator_begin(in); it != end; ++it) {
 389                 string const name = it->layout()->name();
 390                 bool hasLayout = tclass2.hasLayout(name);
 391
 392                 if (hasLayout)
 393                         it->layout(tclass2[name]);
 394                 else
 395                         it->layout(tclass2.defaultLayout());
 396
 397                 if (!hasLayout && name != tclass1.defaultLayoutName()) {
 398                         string const s = bformat(
 399                                 _("Layout had to be changed from\n%1$s to %2$s\n"
 400                                 "because of class conversion from\n%3$s to %4$s"),
 401                          name, it->layout()->name(), tclass1.name(), tclass2.name());
 402                         // To warn the user that something had to be done.
 403                         errorlist.push_back(ErrorItem(_("Changed Layout"), s,
 404                                                       it->id(), 0,
 405                                                       it->size()));
 406                 }
 407         }
 408
 409         // character styles
 410         InsetIterator const i_end = inset_iterator_end(in);
 411         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 412                 if (it->lyxCode() == InsetBase::CHARSTYLE_CODE) {
 413                         InsetCharStyle & inset =
 414                                 static_cast<InsetCharStyle &>(*it);
 415                         string const name = inset.params().type;
 416                         CharStyles::iterator const found_cs =
 417                                 tclass2.charstyle(name);
 418                         if (found_cs == tclass2.charstyles().end()) {
 419                                 // The character style is undefined in tclass2
 420                                 inset.setUndefined();
 421                                 string const s = bformat(_(
 422                                         "Character style %1$s is "
 423                                         "undefined because of class "
 424                                         "conversion from\n%2$s to %3$s"),
 425                                          name, tclass1.name(), tclass2.name());
 426                                 // To warn the user that something had to be done.
 427                                 errorlist.push_back(ErrorItem(
 428                                                 _("Undefined character style"),
 429                                                 s, it.paragraph().id(),
 430                                                 it.pos(), it.pos() + 1));
 431                         } else if (inset.undefined()) {
 432                                 // The character style is undefined in
 433                                 // tclass1 and is defined in tclass2
 434                                 inset.setDefined(found_cs);
 435                         }
 436                 }
 437         }
 438 }
 439
 440
 441 std::vector<string> const availableSelections(Buffer const & buffer)
 442 {
 443         vector<string> selList;
 444
 445         CutStack::const_iterator cit = theCuts.begin();
 446         CutStack::const_iterator end = theCuts.end();
 447         for (; cit != end; ++cit) {
 448                 // we do not use cit-> here because gcc 2.9x does not
 449                 // like it (JMarc)
 450                 ParagraphList const & pars = (*cit).first;
 451                 string asciiSel;
 452                 ParagraphList::const_iterator pit = pars.begin();
 453                 ParagraphList::const_iterator pend = pars.end();
 454                 for (; pit != pend; ++pit) {
 455                         asciiSel += pit->asString(buffer, false);
 456                         if (asciiSel.size() > 25) {
 457                                 asciiSel.replace(22, string::npos, "...");
 458                                 break;
 459                         }
 460                 }
 461
 462                 selList.push_back(asciiSel);
 463         }
 464
 465         return selList;
 466 }
 467
 468
 469 lyx::size_type numberOfSelections()
 470 {
 471         return theCuts.size();
 472 }
 473
 474
 475 void cutSelection(LCursor & cur, bool doclear, bool realcut)
 476 {
 477         // This doesn't make sense, if there is no selection
 478         if (!cur.selection())
 479                 return;
 480
 481         // OK, we have a selection. This is always between cur.selBegin()
 482         // and cur.selEnd()
 483
 484         if (cur.inTexted()) {
 485                 LyXText * text = cur.text();
 486                 BOOST_ASSERT(text);
 487                 // Stuff what we got on the clipboard. Even if there is no selection.
 488
 489                 // There is a problem with having the stuffing here in that the
 490                 // larger the selection the slower LyX will get. This can be
 491                 // solved by running the line below only when the selection has
 492                 // finished. The solution used currently just works, to make it
 493                 // faster we need to be more clever and probably also have more
 494                 // calls to stuffClipboard. (Lgb)
 495 //              cur.bv().stuffClipboard(cur.selectionAsString(true));
 496
 497                 // make sure that the depth behind the selection are restored, too
 498                 recordUndoSelection(cur);
 499                 pit_type begpit = cur.selBegin().pit();
 500                 pit_type endpit = cur.selEnd().pit();
 501
 502                 int endpos = cur.selEnd().pos();
 503
 504                 BufferParams const & bp = cur.buffer().params();
 505                 if (realcut) {
 506                         copySelectionHelper(cur.buffer(),
 507                                 text->paragraphs(),
 508                                 begpit, endpit,
 509                                 cur.selBegin().pos(), endpos,
 510                                 bp.textclass);
 511                 }
 512
 513                 boost::tie(endpit, endpos) =
 514                         eraseSelectionHelper(bp,
 515                                 text->paragraphs(),
 516                                 begpit, endpit,
 517                                 cur.selBegin().pos(), endpos,
 518                                 doclear);
 519
 520                 // sometimes necessary
 521                 if (doclear)
 522                         text->paragraphs()[begpit].stripLeadingSpaces();
 523
 524                 // cutSelection can invalidate the cursor so we need to set
 525                 // it anew. (Lgb)
 526                 // we prefer the end for when tracking changes
 527                 cur.pos() = endpos;
 528                 cur.pit() = endpit;
 529
 530                 // need a valid cursor. (Lgb)
 531                 cur.clearSelection();
 532                 updateLabels(cur.buffer());
 533
 534                 // tell tabular that a recent copy happened
 535                 dirtyTabularStack(false);
 536         }
 537
 538         if (cur.inMathed()) {
 539                 if (cur.selBegin().idx() != cur.selEnd().idx()) {
 540                         // The current selection spans more than one cell.
 541                         // Record all cells
 542                         recordUndoInset(cur);
 543                 } else {
 544                         // Record only the current cell to avoid a jumping
 545                         // cursor after undo
 546                         recordUndo(cur);
 547                 }
 548                 if (realcut)
 549                         copySelection(cur);
 550                 eraseSelection(cur);
 551         }
 552 }
 553
 554
 555 void copySelection(LCursor & cur)
 556 {
 557         // stuff the selection onto the X clipboard, from an explicit copy request
 558         cur.bv().stuffClipboard(cur.selectionAsString(true));
 559
 560         // this doesn't make sense, if there is no selection
 561         if (!cur.selection())
 562                 return;
 563
 564         if (cur.inTexted()) {
 565                 LyXText * text = cur.text();
 566                 BOOST_ASSERT(text);
 567                 // ok we have a selection. This is always between cur.selBegin()
 568                 // and sel_end cursor
 569
 570                 // copy behind a space if there is one
 571                 ParagraphList & pars = text->paragraphs();
 572                 pos_type pos = cur.selBegin().pos();
 573                 pit_type par = cur.selBegin().pit();
 574                 while (pos < pars[par].size()
 575                                          && pars[par].isLineSeparator(pos)
 576                                          && (par != cur.selEnd().pit() || pos < cur.selEnd().pos()))
 577                         ++pos;
 578
 579                 copySelectionHelper(cur.buffer(), pars, par, cur.selEnd().pit(),
 580                         pos, cur.selEnd().pos(), cur.buffer().params().textclass);
 581         }
 582
 583         if (cur.inMathed()) {
 584                 lyxerr << "copySelection in mathed" << endl;
 585                 ParagraphList pars;
 586                 pars.push_back(Paragraph());
 587                 BufferParams const & bp = cur.buffer().params();
 588                 pars.back().layout(bp.getLyXTextClass().defaultLayout());
 589                 for_each(pars.begin(), pars.end(), resetParagraph(cur.buffer()));
 590                 pars.back().insert(0, grabSelection(cur), LyXFont());
 591                 theCuts.push(make_pair(pars, bp.textclass));
 592         }
 593         // tell tabular that a recent copy happened
 594         dirtyTabularStack(false);
 595 }
 596
 597
 598 std::string getSelection(Buffer const & buf, size_t sel_index)
 599 {
 600         return sel_index < theCuts.size()
 601                 ? theCuts[sel_index].first.back().asString(buf, false)
 602                 : string();
 603 }
 604
 605
 606 void pasteParagraphList(LCursor & cur, ParagraphList const & parlist,
 607                         textclass_type textclass)
 608 {
 609         if (cur.inTexted()) {
 610                 LyXText * text = cur.text();
 611                 BOOST_ASSERT(text);
 612
 613                 recordUndo(cur);
 614
 615                 pit_type endpit;
 616                 PitPosPair ppp;
 617                 ErrorList el;
 618
 619                 boost::tie(ppp, endpit) =
 620                         pasteSelectionHelper(cur.buffer(),
 621                                              text->paragraphs(),
 622                                              cur.pit(), cur.pos(),
 623                                              parlist, textclass,
 624                                              el);
 625                 bufferErrors(cur.buffer(), el);
 626                 updateLabels(cur.buffer());
 627                 cur.clearSelection();
 628                 text->setCursor(cur, ppp.first, ppp.second);
 629         }
 630
 631         // mathed is handled in MathNestInset/MathGridInset
 632         BOOST_ASSERT(!cur.inMathed());
 633 }
 634
 635
 636 void pasteSelection(LCursor & cur, size_t sel_index)
 637 {
 638         // this does not make sense, if there is nothing to paste
 639         if (!checkPastePossible(sel_index))
 640                 return;
 641
 642         pasteParagraphList(cur, theCuts[sel_index].first,
 643                            theCuts[sel_index].second);
 644         cur.bv().showErrorList(_("Paste"));
 645         cur.setSelection();
 646 }
 647
 648
 649 void setSelectionRange(LCursor & cur, pos_type length)
 650 {
 651         LyXText * text = cur.text();
 652         BOOST_ASSERT(text);
 653         if (!length)
 654                 return;
 655         cur.resetAnchor();
 656         while (length--)
 657                 text->cursorRight(cur);
 658         cur.setSelection();
 659 }
 660
 661
 662 // simple replacing. The font of the first selected character is used
 663 void replaceSelectionWithString(LCursor & cur, string const & str)
 664 {
 665         LyXText * text = cur.text();
 666         BOOST_ASSERT(text);
 667         recordUndo(cur);
 668
 669         // Get font setting before we cut
 670         pos_type pos = cur.selEnd().pos();
 671         Paragraph & par = text->getPar(cur.selEnd().pit());
 672         LyXFont const font =
 673                 par.getFontSettings(cur.buffer().params(), cur.selBegin().pos());
 674
 675         // Insert the new string
 676         string::const_iterator cit = str.begin();
 677         string::const_iterator end = str.end();
 678         for (; cit != end; ++cit, ++pos)
 679                 par.insertChar(pos, (*cit), font);
 680
 681         // Cut the selection
 682         cutSelection(cur, true, false);
 683 }
 684
 685
 686 void replaceSelection(LCursor & cur)
 687 {
 688         if (cur.selection())
 689                 cutSelection(cur, true, false);
 690 }
 691
 692
 693 // only used by the spellchecker
 694 void replaceWord(LCursor & cur, string const & replacestring)
 695 {
 696         LyXText * text = cur.text();
 697         BOOST_ASSERT(text);
 698
 699         replaceSelectionWithString(cur, replacestring);
 700         setSelectionRange(cur, replacestring.length());
 701
 702         // Go back so that replacement string is also spellchecked
 703         for (string::size_type i = 0; i < replacestring.length() + 1; ++i)
 704                 text->cursorLeft(cur);
 705 }
 706
 707
 708 void eraseSelection(LCursor & cur)
 709 {
 710         //lyxerr << "LCursor::eraseSelection begin: " << cur << endl;
 711         CursorSlice const & i1 = cur.selBegin();
 712         CursorSlice const & i2 = cur.selEnd();
 713         if (i1.inset().asMathInset()) {
 714                 cur.top() = i1;
 715                 if (i1.idx() == i2.idx()) {
 716                         i1.cell().erase(i1.pos(), i2.pos());
 717                         // We may have deleted i1.cell(cur.pos()).
 718                         // Make sure that pos is valid.
 719                         if (cur.pos() > cur.lastpos())
 720                                 cur.pos() = cur.lastpos();
 721                 } else {
 722                         MathInset * p = i1.asMathInset();
 723                         InsetBase::row_type r1, r2;
 724                         InsetBase::col_type c1, c2;
 725                         region(i1, i2, r1, r2, c1, c2);
 726                         for (InsetBase::row_type row = r1; row <= r2; ++row)
 727                                 for (InsetBase::col_type col = c1; col <= c2; ++col)
 728                                         p->cell(p->index(row, col)).clear();
 729                         // We've deleted the whole cell. Only pos 0 is valid.
 730                         cur.pos() = 0;
 731                 }
 732                 // need a valid cursor. (Lgb)
 733                 cur.clearSelection();
 734         } else {
 735                 lyxerr << "can't erase this selection 1" << endl;
 736         }
 737         //lyxerr << "LCursor::eraseSelection end: " << cur << endl;
 738 }
 739
 740
 741 void selDel(LCursor & cur)
 742 {
 743         //lyxerr << "LCursor::selDel" << endl;
 744         if (cur.selection())
 745                 eraseSelection(cur);
 746 }
 747
 748
 749 void selClearOrDel(LCursor & cur)
 750 {
 751         //lyxerr << "LCursor::selClearOrDel" << endl;
 752         if (lyxrc.auto_region_delete)
 753                 selDel(cur);
 754         else
 755                 cur.selection() = false;
 756 }
 757
 758
 759 string grabSelection(LCursor const & cur)
 760 {
 761         if (!cur.selection())
 762                 return string();
 763
 764         // FIXME: What is wrong with the following?
 765 #if 0
 766         std::ostringstream os;
 767         for (DocIterator dit = cur.selectionBegin();
 768              dit != cur.selectionEnd(); dit.forwardPos())
 769                 os << asString(dit.cell());
 770         return os.str();
 771 #endif
 772
 773         CursorSlice i1 = cur.selBegin();
 774         CursorSlice i2 = cur.selEnd();
 775
 776         if (i1.idx() == i2.idx()) {
 777                 if (i1.inset().asMathInset()) {
 778                         MathArray::const_iterator it = i1.cell().begin();
 779                         return asString(MathArray(it + i1.pos(), it + i2.pos()));
 780                 } else {
 781                         return "unknown selection 1";
 782                 }
 783         }
 784
 785         InsetBase::row_type r1, r2;
 786         InsetBase::col_type c1, c2;
 787         region(i1, i2, r1, r2, c1, c2);
 788
 789         string data;
 790         if (i1.inset().asMathInset()) {
 791                 for (InsetBase::row_type row = r1; row <= r2; ++row) {
 792                         if (row > r1)
 793                                 data += "\\\\";
 794                         for (InsetBase::col_type col = c1; col <= c2; ++col) {
 795                                 if (col > c1)
 796                                         data += '&';
 797                                 data += asString(i1.asMathInset()->
 798                                         cell(i1.asMathInset()->index(row, col)));
 799                         }
 800                 }
 801         } else {
 802                 data = "unknown selection 2";
 803         }
 804         return data;
 805 }
 806
 807
 808 void dirtyTabularStack(bool b)
 809 {
 810         dirty_tabular_stack_ = b;
 811 }
 812
 813
 814 bool tabularStackDirty()
 815 {
 816         return dirty_tabular_stack_;
 817 }
 818
 819
 820 } // namespace cap
 821 } // namespace lyx