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  * \author Michael Gerz
  10  *
  11  * Full author contact details are available in file CREDITS.
  12  */
  13
  14 #include <config.h>
  15
  16 #include "CutAndPaste.h"
  17
  18 #include "buffer.h"
  19 #include "buffer_funcs.h"
  20 #include "bufferparams.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/MathData.h"
  43 #include "mathed/InsetMath.h"
  44 #include "mathed/MathSupport.h"
  45
  46 #include "support/lstrings.h"
  47
  48 #include "frontends/Clipboard.h"
  49
  50 #include <boost/tuple/tuple.hpp>
  51
  52
  53 namespace lyx {
  54
  55 using support::bformat;
  56 using frontend::Clipboard;
  57
  58 using std::endl;
  59 using std::for_each;
  60 using std::make_pair;
  61 using std::pair;
  62 using std::vector;
  63 using std::string;
  64
  65
  66 namespace {
  67
  68 typedef std::pair<pit_type, int> PitPosPair;
  69
  70 typedef limited_stack<pair<ParagraphList, textclass_type> > CutStack;
  71
  72 CutStack theCuts(10);
  73
  74 // store whether the tabular stack is newer than the normal copy stack
  75 // FIXME: this is a workaround for bug 1919. Should be removed for 1.5,
  76 // when we (hopefully) have a one-for-all paste mechanism.
  77 bool dirty_tabular_stack_ = false;
  78
  79
  80 void region(CursorSlice const & i1, CursorSlice const & i2,
  81         InsetBase::row_type & r1, InsetBase::row_type & r2,
  82         InsetBase::col_type & c1, InsetBase::col_type & c2)
  83 {
  84         InsetBase & p = i1.inset();
  85         c1 = p.col(i1.idx());
  86         c2 = p.col(i2.idx());
  87         if (c1 > c2)
  88                 std::swap(c1, c2);
  89         r1 = p.row(i1.idx());
  90         r2 = p.row(i2.idx());
  91         if (r1 > r2)
  92                 std::swap(r1, r2);
  93 }
  94
  95
  96 bool checkPastePossible(int index)
  97 {
  98         return size_t(index) < theCuts.size() && !theCuts[index].first.empty();
  99 }
 100
 101
 102 pair<PitPosPair, pit_type>
 103 pasteSelectionHelper(LCursor & cur, ParagraphList const & parlist,
 104                      textclass_type textclass, ErrorList & errorlist)
 105 {
 106         Buffer const & buffer = cur.buffer();
 107         pit_type pit = cur.pit();
 108         pos_type pos = cur.pos();
 109         ParagraphList & pars = cur.text()->paragraphs();
 110
 111         if (parlist.empty())
 112                 return make_pair(PitPosPair(pit, pos), pit);
 113
 114         BOOST_ASSERT (pos <= pars[pit].size());
 115
 116         // Make a copy of the CaP paragraphs.
 117         ParagraphList insertion = parlist;
 118         textclass_type const tc = buffer.params().textclass;
 119
 120         // Now remove all out of the pars which is NOT allowed in the
 121         // new environment and set also another font if that is required.
 122
 123         // Convert newline to paragraph break in ERT inset.
 124         // This should not be here!
 125         if (pars[pit].inInset() &&
 126             pars[pit].inInset()->lyxCode() == InsetBase::ERT_CODE) {
 127                 for (ParagraphList::size_type i = 0; i < insertion.size(); ++i) {
 128                         for (pos_type j = 0; j < insertion[i].size(); ++j) {
 129                                 if (insertion[i].isNewline(j)) {
 130                                         // do not track deletion of newline
 131                                         insertion[i].eraseChar(j, false);
 132                                         breakParagraphConservative(
 133                                                         buffer.params(),
 134                                                         insertion, i, j);
 135                                 }
 136                         }
 137                 }
 138         }
 139
 140         // If we are in an inset which returns forceDefaultParagraphs,
 141         // set the paragraphs to default
 142         if (cur.inset().forceDefaultParagraphs(cur.idx())) {
 143                 LyXLayout_ptr const layout =
 144                         buffer.params().getLyXTextClass().defaultLayout();
 145                 ParagraphList::iterator const end = insertion.end();
 146                 for (ParagraphList::iterator par = insertion.begin();
 147                                 par != end; ++par)
 148                         par->layout(layout);
 149         }
 150
 151         // Make sure there is no class difference.
 152         InsetText in;
 153         // This works without copying any paragraph data because we have
 154         // a specialized swap method for ParagraphList. This is important
 155         // since we store pointers to insets at some places and we don't
 156         // want to invalidate them.
 157         insertion.swap(in.paragraphs());
 158         cap::switchBetweenClasses(textclass, tc, in, errorlist);
 159         insertion.swap(in.paragraphs());
 160
 161         ParagraphList::iterator tmpbuf = insertion.begin();
 162         int depth_delta = pars[pit].params().depth() - tmpbuf->params().depth();
 163
 164         depth_type max_depth = pars[pit].getMaxDepthAfter();
 165
 166         for (; tmpbuf != insertion.end(); ++tmpbuf) {
 167                 // If we have a negative jump so that the depth would
 168                 // go below 0 depth then we have to redo the delta to
 169                 // this new max depth level so that subsequent
 170                 // paragraphs are aligned correctly to this paragraph
 171                 // at level 0.
 172                 if (int(tmpbuf->params().depth()) + depth_delta < 0)
 173                         depth_delta = 0;
 174
 175                 // Set the right depth so that we are not too deep or shallow.
 176                 tmpbuf->params().depth(tmpbuf->params().depth() + depth_delta);
 177                 if (tmpbuf->params().depth() > max_depth)
 178                         tmpbuf->params().depth(max_depth);
 179
 180                 // Only set this from the 2nd on as the 2nd depends
 181                 // for maxDepth still on pit.
 182                 if (tmpbuf != insertion.begin())
 183                         max_depth = tmpbuf->getMaxDepthAfter();
 184
 185                 // Set the inset owner of this paragraph.
 186                 tmpbuf->setInsetOwner(pars[pit].inInset());
 187                 for (pos_type i = 0; i < tmpbuf->size(); ++i) {
 188                         if (tmpbuf->getChar(i) == Paragraph::META_INSET &&
 189                             !pars[pit].insetAllowed(tmpbuf->getInset(i)->lyxCode()))
 190                                 // do not track deletion of invalid insets
 191                                 tmpbuf->eraseChar(i--, false);
 192                 }
 193
 194                 tmpbuf->setChange(Change(buffer.params().trackChanges ?
 195                                          Change::INSERTED : Change::UNCHANGED));
 196         }
 197
 198         bool const empty = pars[pit].empty();
 199         if (!empty) {
 200                 // Make the buf exactly the same layout as the cursor
 201                 // paragraph.
 202                 insertion.begin()->makeSameLayout(pars[pit]);
 203         }
 204
 205         // Prepare the paragraphs and insets for insertion.
 206         // A couple of insets store buffer references so need updating.
 207         insertion.swap(in.paragraphs());
 208
 209         ParIterator fpit = par_iterator_begin(in);
 210         ParIterator fend = par_iterator_end(in);
 211
 212         for (; fpit != fend; ++fpit) {
 213                 InsetList::const_iterator lit = fpit->insetlist.begin();
 214                 InsetList::const_iterator eit = fpit->insetlist.end();
 215
 216                 for (; lit != eit; ++lit) {
 217                         switch (lit->inset->lyxCode()) {
 218                         case InsetBase::TABULAR_CODE: {
 219                                 InsetTabular * it = static_cast<InsetTabular*>(lit->inset);
 220                                 it->buffer(&buffer);
 221                                 break;
 222                         }
 223
 224                         default:
 225                                 break; // nothing
 226                         }
 227                 }
 228         }
 229         insertion.swap(in.paragraphs());
 230
 231         // Split the paragraph for inserting the buf if necessary.
 232         if (!empty)
 233                 breakParagraphConservative(buffer.params(), pars, pit, pos);
 234
 235         // Paste it!
 236         if (empty) {
 237                 pars.insert(boost::next(pars.begin(), pit),
 238                             insertion.begin(),
 239                             insertion.end());
 240
 241                 // merge the empty par with the last par of the insertion
 242                 mergeParagraph(buffer.params(), pars,
 243                                pit + insertion.size() - 1);
 244         } else {
 245                 pars.insert(boost::next(pars.begin(), pit + 1),
 246                             insertion.begin(),
 247                             insertion.end());
 248
 249                 // merge the first par of the insertion with the current par
 250                 mergeParagraph(buffer.params(), pars, pit);
 251         }
 252
 253         pit_type last_paste = pit + insertion.size() - 1;
 254
 255         // Store the new cursor position.
 256         pit = last_paste;
 257         pos = pars[last_paste].size();
 258
 259         // Join (conditionally) last pasted paragraph with next one, i.e.,
 260         // the tail of the spliced document paragraph
 261         if (!empty && last_paste + 1 != pit_type(pars.size())) {
 262                 if (pars[last_paste + 1].hasSameLayout(pars[last_paste])) {
 263                         mergeParagraph(buffer.params(), pars, last_paste);
 264                 } else if (pars[last_paste + 1].empty()) {
 265                         pars[last_paste + 1].makeSameLayout(pars[last_paste]);
 266                         mergeParagraph(buffer.params(), pars, last_paste);
 267                 } else if (pars[last_paste].empty()) {
 268                         pars[last_paste].makeSameLayout(pars[last_paste + 1]);
 269                         mergeParagraph(buffer.params(), pars, last_paste);
 270                 } else {
 271                         pars[last_paste + 1].stripLeadingSpaces();
 272                         ++last_paste;
 273                 }
 274         }
 275
 276         return make_pair(PitPosPair(pit, pos), last_paste + 1);
 277 }
 278
 279
 280 PitPosPair eraseSelectionHelper(BufferParams const & params,
 281         ParagraphList & pars,
 282         pit_type startpit, pit_type endpit,
 283         int startpos, int endpos, bool doclear)
 284 {
 285         // Start of selection is really invalid.
 286         if (startpit == pit_type(pars.size()) ||
 287             (startpos > pars[startpit].size()))
 288                 return PitPosPair(endpit, endpos);
 289
 290         // Start and end is inside same paragraph
 291         if (endpit == pit_type(pars.size()) || startpit == endpit) {
 292                 endpos -= pars[startpit].eraseChars(startpos, endpos, params.trackChanges);
 293                 return PitPosPair(endpit, endpos);
 294         }
 295
 296         for (pit_type pit = startpit; pit != endpit + 1;) {
 297                 pos_type const left  = (pit == startpit ? startpos : 0);
 298                 pos_type const right = (pit == endpit ? endpos : pars[pit].size() + 1);
 299
 300                 bool const merge = pars[pit].isMergedOnEndOfParDeletion(params.trackChanges);
 301
 302                 // Logically erase only, including the end-of-paragraph character
 303                 pars[pit].eraseChars(left, right, params.trackChanges);
 304
 305                 // Separate handling of paragraph break:
 306                 if (merge && pit != endpit &&
 307                     (pit + 1 != endpit || pars[pit].hasSameLayout(pars[pit + 1]))) {
 308                         pos_type const thissize = pars[pit].size();
 309                         if (doclear)
 310                                 pars[pit + 1].stripLeadingSpaces();
 311                         mergeParagraph(params, pars, pit);
 312                         --endpit;
 313                         if (pit == endpit)
 314                                 endpos += thissize;
 315                 } else
 316                         ++pit;
 317         }
 318
 319         // Ensure legal cursor pos:
 320         endpit = startpit;
 321         endpos = startpos;
 322         return PitPosPair(endpit, endpos);
 323 }
 324
 325
 326 void copySelectionHelper(Buffer const & buf, ParagraphList & pars,
 327         pit_type startpit, pit_type endpit,
 328         int start, int end, textclass_type tc)
 329 {
 330         BOOST_ASSERT(0 <= start && start <= pars[startpit].size());
 331         BOOST_ASSERT(0 <= end && end <= pars[endpit].size());
 332         BOOST_ASSERT(startpit != endpit || start <= end);
 333
 334         // Clone the paragraphs within the selection.
 335         ParagraphList paragraphs(boost::next(pars.begin(), startpit),
 336                                  boost::next(pars.begin(), endpit + 1));
 337
 338         ParagraphList::iterator it = paragraphs.begin();
 339         ParagraphList::iterator it_end = paragraphs.end();
 340
 341         for (; it != it_end; it++) {
 342                 // ERT paragraphs have the Language latex_language.
 343                 // This is invalid outside of ERT, so we need to change it
 344                 // to the buffer language.
 345                 if (it->ownerCode() == InsetBase::ERT_CODE) {
 346                         it->changeLanguage(buf.params(), latex_language,
 347                                            buf.getLanguage());
 348                 }
 349                 it->setInsetOwner(0);
 350         }
 351
 352         // Cut out the end of the last paragraph.
 353         Paragraph & back = paragraphs.back();
 354         // do not track deletion here; it is an internal action not visible to the user
 355         back.eraseChars(end, back.size(), false);
 356
 357         // Cut out the begin of the first paragraph
 358         Paragraph & front = paragraphs.front();
 359         // again, do not track deletion
 360         front.eraseChars(0, start, false);
 361
 362         theCuts.push(make_pair(paragraphs, tc));
 363 }
 364
 365 } // namespace anon
 366
 367
 368
 369
 370 namespace cap {
 371
 372 docstring grabAndEraseSelection(LCursor & cur)
 373 {
 374         if (!cur.selection())
 375                 return docstring();
 376         docstring res = grabSelection(cur);
 377         eraseSelection(cur);
 378         return res;
 379 }
 380
 381
 382 void switchBetweenClasses(textclass_type c1, textclass_type c2,
 383         InsetText & in, ErrorList & errorlist)
 384 {
 385         BOOST_ASSERT(!in.paragraphs().empty());
 386         if (c1 == c2)
 387                 return;
 388
 389         LyXTextClass const & tclass1 = textclasslist[c1];
 390         LyXTextClass const & tclass2 = textclasslist[c2];
 391
 392         // layouts
 393         ParIterator end = par_iterator_end(in);
 394         for (ParIterator it = par_iterator_begin(in); it != end; ++it) {
 395                 string const name = it->layout()->name();
 396                 bool hasLayout = tclass2.hasLayout(name);
 397
 398                 if (hasLayout)
 399                         it->layout(tclass2[name]);
 400                 else
 401                         it->layout(tclass2.defaultLayout());
 402
 403                 if (!hasLayout && name != tclass1.defaultLayoutName()) {
 404                         docstring const s = bformat(
 405                                                  _("Layout had to be changed from\n%1$s to %2$s\n"
 406                                                 "because of class conversion from\n%3$s to %4$s"),
 407                          from_utf8(name), from_utf8(it->layout()->name()),
 408                          from_utf8(tclass1.name()), from_utf8(tclass2.name()));
 409                         // To warn the user that something had to be done.
 410                         errorlist.push_back(ErrorItem(_("Changed Layout"), s,
 411                                                       it->id(), 0,
 412                                                       it->size()));
 413                 }
 414         }
 415
 416         // character styles
 417         InsetIterator const i_end = inset_iterator_end(in);
 418         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 419                 if (it->lyxCode() == InsetBase::CHARSTYLE_CODE) {
 420                         InsetCharStyle & inset =
 421                                 static_cast<InsetCharStyle &>(*it);
 422                         string const name = inset.params().type;
 423                         CharStyles::iterator const found_cs =
 424                                 tclass2.charstyle(name);
 425                         if (found_cs == tclass2.charstyles().end()) {
 426                                 // The character style is undefined in tclass2
 427                                 inset.setUndefined();
 428                                 docstring const s = bformat(_(
 429                                         "Character style %1$s is "
 430                                         "undefined because of class "
 431                                         "conversion from\n%2$s to %3$s"),
 432                                          from_utf8(name), from_utf8(tclass1.name()),
 433                                          from_utf8(tclass2.name()));
 434                                 // To warn the user that something had to be done.
 435                                 errorlist.push_back(ErrorItem(
 436                                         _("Undefined character style"),
 437                                         s, it.paragraph().id(), it.pos(), it.pos() + 1));
 438                         } else if (inset.undefined()) {
 439                                 // The character style is undefined in
 440                                 // tclass1 and is defined in tclass2
 441                                 inset.setDefined(found_cs);
 442                         }
 443                 }
 444         }
 445 }
 446
 447
 448 std::vector<docstring> const availableSelections(Buffer const & buffer)
 449 {
 450         vector<docstring> selList;
 451
 452         CutStack::const_iterator cit = theCuts.begin();
 453         CutStack::const_iterator end = theCuts.end();
 454         for (; cit != end; ++cit) {
 455                 // we do not use cit-> here because gcc 2.9x does not
 456                 // like it (JMarc)
 457                 ParagraphList const & pars = (*cit).first;
 458                 docstring asciiSel;
 459                 ParagraphList::const_iterator pit = pars.begin();
 460                 ParagraphList::const_iterator pend = pars.end();
 461                 for (; pit != pend; ++pit) {
 462                         asciiSel += pit->asString(buffer, false);
 463                         if (asciiSel.size() > 25) {
 464                                 asciiSel.replace(22, docstring::npos,
 465                                                  from_ascii("..."));
 466                                 break;
 467                         }
 468                 }
 469
 470                 selList.push_back(asciiSel);
 471         }
 472
 473         return selList;
 474 }
 475
 476
 477 size_type numberOfSelections()
 478 {
 479         return theCuts.size();
 480 }
 481
 482
 483 void cutSelection(LCursor & cur, bool doclear, bool realcut)
 484 {
 485         // This doesn't make sense, if there is no selection
 486         if (!cur.selection())
 487                 return;
 488
 489         // OK, we have a selection. This is always between cur.selBegin()
 490         // and cur.selEnd()
 491
 492         if (cur.inTexted()) {
 493                 LyXText * text = cur.text();
 494                 BOOST_ASSERT(text);
 495                 // Stuff what we got on the clipboard. Even if there is no selection.
 496                 if (realcut)
 497                         theClipboard().put(cur.selectionAsString(true));
 498
 499                 // make sure that the depth behind the selection are restored, too
 500                 recordUndoSelection(cur);
 501                 pit_type begpit = cur.selBegin().pit();
 502                 pit_type endpit = cur.selEnd().pit();
 503
 504                 int endpos = cur.selEnd().pos();
 505
 506                 BufferParams const & bp = cur.buffer().params();
 507                 if (realcut) {
 508                         copySelectionHelper(cur.buffer(),
 509                                 text->paragraphs(),
 510                                 begpit, endpit,
 511                                 cur.selBegin().pos(), endpos,
 512                                 bp.textclass);
 513                 }
 514
 515                 boost::tie(endpit, endpos) =
 516                         eraseSelectionHelper(bp,
 517                                 text->paragraphs(),
 518                                 begpit, endpit,
 519                                 cur.selBegin().pos(), endpos,
 520                                 doclear);
 521
 522                 // sometimes necessary
 523                 if (doclear)
 524                         text->paragraphs()[begpit].stripLeadingSpaces();
 525
 526                 // cutSelection can invalidate the cursor so we need to set
 527                 // it anew. (Lgb)
 528                 // we prefer the end for when tracking changes
 529                 cur.pos() = endpos;
 530                 cur.pit() = endpit;
 531
 532                 // need a valid cursor. (Lgb)
 533                 cur.clearSelection();
 534                 updateLabels(cur.buffer());
 535
 536                 // tell tabular that a recent copy happened
 537                 dirtyTabularStack(false);
 538         }
 539
 540         if (cur.inMathed()) {
 541                 if (cur.selBegin().idx() != cur.selEnd().idx()) {
 542                         // The current selection spans more than one cell.
 543                         // Record all cells
 544                         recordUndoInset(cur);
 545                 } else {
 546                         // Record only the current cell to avoid a jumping
 547                         // cursor after undo
 548                         recordUndo(cur);
 549                 }
 550                 if (realcut)
 551                         copySelection(cur);
 552                 eraseSelection(cur);
 553         }
 554 }
 555
 556
 557 void copySelection(LCursor & cur)
 558 {
 559         // stuff the selection onto the X clipboard, from an explicit copy request
 560         theClipboard().put(cur.selectionAsString(true));
 561
 562         copySelectionToStack(cur);
 563 }
 564
 565
 566 void copySelectionToStack(LCursor & cur)
 567 {
 568         // this doesn't make sense, if there is no selection
 569         if (!cur.selection())
 570                 return;
 571
 572         if (cur.inTexted()) {
 573                 LyXText * text = cur.text();
 574                 BOOST_ASSERT(text);
 575                 // ok we have a selection. This is always between cur.selBegin()
 576                 // and sel_end cursor
 577
 578                 // copy behind a space if there is one
 579                 ParagraphList & pars = text->paragraphs();
 580                 pos_type pos = cur.selBegin().pos();
 581                 pit_type par = cur.selBegin().pit();
 582                 while (pos < pars[par].size()
 583                                          && pars[par].isLineSeparator(pos)
 584                                          && (par != cur.selEnd().pit() || pos < cur.selEnd().pos()))
 585                         ++pos;
 586
 587                 copySelectionHelper(cur.buffer(), pars, par, cur.selEnd().pit(),
 588                         pos, cur.selEnd().pos(), cur.buffer().params().textclass);
 589         }
 590
 591         if (cur.inMathed()) {
 592                 //lyxerr << "copySelection in mathed" << endl;
 593                 ParagraphList pars;
 594                 Paragraph par;
 595                 BufferParams const & bp = cur.buffer().params();
 596                 par.layout(bp.getLyXTextClass().defaultLayout());
 597                 par.insert(0, grabSelection(cur), LyXFont(), Change(Change::UNCHANGED));
 598                 pars.push_back(par);
 599                 theCuts.push(make_pair(pars, bp.textclass));
 600         }
 601         // tell tabular that a recent copy happened
 602         dirtyTabularStack(false);
 603 }
 604
 605
 606 docstring getSelection(Buffer const & buf, size_t sel_index)
 607 {
 608         return sel_index < theCuts.size()
 609                 ? theCuts[sel_index].first.back().asString(buf, false)
 610                 : docstring();
 611 }
 612
 613
 614 void pasteParagraphList(LCursor & cur, ParagraphList const & parlist,
 615                         textclass_type textclass, ErrorList & errorList)
 616 {
 617         if (cur.inTexted()) {
 618                 LyXText * text = cur.text();
 619                 BOOST_ASSERT(text);
 620
 621                 pit_type endpit;
 622                 PitPosPair ppp;
 623
 624                 boost::tie(ppp, endpit) =
 625                         pasteSelectionHelper(cur, parlist,
 626                                              textclass, errorList);
 627                 updateLabels(cur.buffer());
 628                 cur.clearSelection();
 629                 text->setCursor(cur.top(), ppp.first, ppp.second);
 630         }
 631
 632         // mathed is handled in InsetMathNest/InsetMathGrid
 633         BOOST_ASSERT(!cur.inMathed());
 634 }
 635
 636
 637 void pasteSelection(LCursor & cur, ErrorList & errorList, size_t sel_index)
 638 {
 639         // this does not make sense, if there is nothing to paste
 640         if (!checkPastePossible(sel_index))
 641                 return;
 642
 643         recordUndo(cur);
 644         pasteParagraphList(cur, theCuts[sel_index].first,
 645                            theCuts[sel_index].second, errorList);
 646         cur.setSelection();
 647 }
 648
 649
 650 void replaceSelectionWithString(LCursor & cur, docstring const & str, bool backwards)
 651 {
 652         recordUndo(cur);
 653         DocIterator selbeg = cur.selectionBegin();
 654
 655         // Get font setting before we cut
 656         LyXFont const font =
 657                 selbeg.paragraph().getFontSettings(cur.buffer().params(), selbeg.pos());
 658
 659         // Insert the new string
 660         pos_type pos = cur.selEnd().pos();
 661         Paragraph & par = cur.selEnd().paragraph();
 662         docstring::const_iterator cit = str.begin();
 663         docstring::const_iterator end = str.end();
 664         for (; cit != end; ++cit, ++pos)
 665                 par.insertChar(pos, *cit, font, cur.buffer().params().trackChanges);
 666
 667         // Cut the selection
 668         cutSelection(cur, true, false);
 669
 670         // select the replacement
 671         if (backwards) {
 672                 selbeg.pos() += str.length();
 673                 cur.setSelection(selbeg, -int(str.length()));
 674         } else
 675                 cur.setSelection(selbeg, str.length());
 676 }
 677
 678
 679 void replaceSelection(LCursor & cur)
 680 {
 681         if (cur.selection())
 682                 cutSelection(cur, true, false);
 683 }
 684
 685
 686 void eraseSelection(LCursor & cur)
 687 {
 688         //lyxerr << "cap::eraseSelection begin: " << cur << endl;
 689         CursorSlice const & i1 = cur.selBegin();
 690         CursorSlice const & i2 = cur.selEnd();
 691         if (i1.inset().asInsetMath()) {
 692                 cur.top() = i1;
 693                 if (i1.idx() == i2.idx()) {
 694                         i1.cell().erase(i1.pos(), i2.pos());
 695                         // We may have deleted i1.cell(cur.pos()).
 696                         // Make sure that pos is valid.
 697                         if (cur.pos() > cur.lastpos())
 698                                 cur.pos() = cur.lastpos();
 699                 } else {
 700                         InsetMath * p = i1.asInsetMath();
 701                         InsetBase::row_type r1, r2;
 702                         InsetBase::col_type c1, c2;
 703                         region(i1, i2, r1, r2, c1, c2);
 704                         for (InsetBase::row_type row = r1; row <= r2; ++row)
 705                                 for (InsetBase::col_type col = c1; col <= c2; ++col)
 706                                         p->cell(p->index(row, col)).clear();
 707                         // We've deleted the whole cell. Only pos 0 is valid.
 708                         cur.pos() = 0;
 709                 }
 710                 // need a valid cursor. (Lgb)
 711                 cur.clearSelection();
 712         } else {
 713                 lyxerr << "can't erase this selection 1" << endl;
 714         }
 715         //lyxerr << "cap::eraseSelection end: " << cur << endl;
 716 }
 717
 718
 719 void selDel(LCursor & cur)
 720 {
 721         //lyxerr << "cap::selDel" << endl;
 722         if (cur.selection())
 723                 eraseSelection(cur);
 724 }
 725
 726
 727 void selClearOrDel(LCursor & cur)
 728 {
 729         //lyxerr << "cap::selClearOrDel" << endl;
 730         if (lyxrc.auto_region_delete)
 731                 selDel(cur);
 732         else
 733                 cur.selection() = false;
 734 }
 735
 736
 737 docstring grabSelection(LCursor const & cur)
 738 {
 739         if (!cur.selection())
 740                 return docstring();
 741
 742         // FIXME: What is wrong with the following?
 743 #if 0
 744         std::ostringstream os;
 745         for (DocIterator dit = cur.selectionBegin();
 746              dit != cur.selectionEnd(); dit.forwardPos())
 747                 os << asString(dit.cell());
 748         return os.str();
 749 #endif
 750
 751         CursorSlice i1 = cur.selBegin();
 752         CursorSlice i2 = cur.selEnd();
 753
 754         if (i1.idx() == i2.idx()) {
 755                 if (i1.inset().asInsetMath()) {
 756                         MathArray::const_iterator it = i1.cell().begin();
 757                         return asString(MathArray(it + i1.pos(), it + i2.pos()));
 758                 } else {
 759                         return from_ascii("unknown selection 1");
 760                 }
 761         }
 762
 763         InsetBase::row_type r1, r2;
 764         InsetBase::col_type c1, c2;
 765         region(i1, i2, r1, r2, c1, c2);
 766
 767         docstring data;
 768         if (i1.inset().asInsetMath()) {
 769                 for (InsetBase::row_type row = r1; row <= r2; ++row) {
 770                         if (row > r1)
 771                                 data += "\\\\";
 772                         for (InsetBase::col_type col = c1; col <= c2; ++col) {
 773                                 if (col > c1)
 774                                         data += '&';
 775                                 data += asString(i1.asInsetMath()->
 776                                         cell(i1.asInsetMath()->index(row, col)));
 777                         }
 778                 }
 779         } else {
 780                 data = from_ascii("unknown selection 2");
 781         }
 782         return data;
 783 }
 784
 785
 786 void dirtyTabularStack(bool b)
 787 {
 788         dirty_tabular_stack_ = b;
 789 }
 790
 791
 792 bool tabularStackDirty()
 793 {
 794         return dirty_tabular_stack_;
 795 }
 796
 797
 798 } // namespace cap
 799
 800 } // namespace lyx