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 "cursor.h"
  21 #include "debug.h"
  22 #include "errorlist.h"
  23 #include "funcrequest.h"
  24 #include "gettext.h"
  25 #include "insetiterator.h"
  26 #include "language.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/MathData.h"
  42 #include "mathed/InsetMath.h"
  43 #include "mathed/MathSupport.h"
  44
  45 #include "support/lstrings.h"
  46
  47 #include "frontends/Clipboard.h"
  48
  49 #include <boost/tuple/tuple.hpp>
  50
  51
  52 namespace lyx {
  53
  54 using support::bformat;
  55 using frontend::Clipboard;
  56
  57 using std::endl;
  58 using std::for_each;
  59 using std::make_pair;
  60 using std::pair;
  61 using std::vector;
  62 using std::string;
  63
  64
  65 namespace {
  66
  67 typedef std::pair<pit_type, int> PitPosPair;
  68
  69 typedef limited_stack<pair<ParagraphList, textclass_type> > CutStack;
  70
  71 CutStack theCuts(10);
  72
  73 // store whether the tabular stack is newer than the normal copy stack
  74 // FIXME: this is a workaround for bug 1919. Should be removed for 1.5,
  75 // when we (hopefully) have a one-for-all paste mechanism.
  76 bool dirty_tabular_stack_;
  77
  78
  79 void region(CursorSlice const & i1, CursorSlice const & i2,
  80         InsetBase::row_type & r1, InsetBase::row_type & r2,
  81         InsetBase::col_type & c1, InsetBase::col_type & c2)
  82 {
  83         InsetBase & p = i1.inset();
  84         c1 = p.col(i1.idx());
  85         c2 = p.col(i2.idx());
  86         if (c1 > c2)
  87                 std::swap(c1, c2);
  88         r1 = p.row(i1.idx());
  89         r2 = p.row(i2.idx());
  90         if (r1 > r2)
  91                 std::swap(r1, r2);
  92 }
  93
  94
  95 bool checkPastePossible(int index)
  96 {
  97         return size_t(index) < theCuts.size() && !theCuts[index].first.empty();
  98 }
  99
 100
 101 pair<PitPosPair, pit_type>
 102 pasteSelectionHelper(LCursor & cur, ParagraphList const & parlist,
 103                      textclass_type textclass, ErrorList & errorlist)
 104 {
 105         Buffer const & buffer = cur.buffer();
 106         pit_type pit = cur.pit();
 107         pos_type pos = cur.pos();
 108         ParagraphList & pars = cur.text()->paragraphs();
 109
 110         if (parlist.empty())
 111                 return make_pair(PitPosPair(pit, pos), pit);
 112
 113         BOOST_ASSERT (pos <= pars[pit].size());
 114
 115         // Make a copy of the CaP paragraphs.
 116         ParagraphList insertion = parlist;
 117         textclass_type const tc = buffer.params().textclass;
 118
 119         // Now remove all out of the pars which is NOT allowed in the
 120         // new environment and set also another font if that is required.
 121
 122         // Convert newline to paragraph break in ERT inset.
 123         // This should not be here!
 124         if (pars[pit].inInset() &&
 125             pars[pit].inInset()->lyxCode() == InsetBase::ERT_CODE) {
 126                 for (ParagraphList::size_type i = 0; i < insertion.size(); ++i) {
 127                         for (pos_type j = 0; j < insertion[i].size(); ++j) {
 128                                 if (insertion[i].isNewline(j)) {
 129                                         // do not track deletion of newline
 130                                         insertion[i].eraseChar(j, false);
 131                                         breakParagraphConservative(
 132                                                         buffer.params(),
 133                                                         insertion, i, j);
 134                                 }
 135                         }
 136                 }
 137         }
 138
 139         // If we are in an inset which returns forceDefaultParagraphs,
 140         // set the paragraphs to default
 141         if (cur.inset().forceDefaultParagraphs(cur.idx())) {
 142                 LyXLayout_ptr const layout =
 143                         buffer.params().getLyXTextClass().defaultLayout();
 144                 ParagraphList::iterator const end = insertion.end();
 145                 for (ParagraphList::iterator par = insertion.begin();
 146                                 par != end; ++par)
 147                         par->layout(layout);
 148         }
 149
 150         // Make sure there is no class difference.
 151         InsetText in;
 152         // This works without copying any paragraph data because we have
 153         // a specialized swap method for ParagraphList. This is important
 154         // since we store pointers to insets at some places and we don't
 155         // want to invalidate them.
 156         insertion.swap(in.paragraphs());
 157         cap::switchBetweenClasses(textclass, tc, in, errorlist);
 158         insertion.swap(in.paragraphs());
 159
 160         ParagraphList::iterator tmpbuf = insertion.begin();
 161         int depth_delta = pars[pit].params().depth() - tmpbuf->params().depth();
 162
 163         depth_type max_depth = pars[pit].getMaxDepthAfter();
 164
 165         for (; tmpbuf != insertion.end(); ++tmpbuf) {
 166                 // If we have a negative jump so that the depth would
 167                 // go below 0 depth then we have to redo the delta to
 168                 // this new max depth level so that subsequent
 169                 // paragraphs are aligned correctly to this paragraph
 170                 // at level 0.
 171                 if (int(tmpbuf->params().depth()) + depth_delta < 0)
 172                         depth_delta = 0;
 173
 174                 // Set the right depth so that we are not too deep or shallow.
 175                 tmpbuf->params().depth(tmpbuf->params().depth() + depth_delta);
 176                 if (tmpbuf->params().depth() > max_depth)
 177                         tmpbuf->params().depth(max_depth);
 178
 179                 // Only set this from the 2nd on as the 2nd depends
 180                 // for maxDepth still on pit.
 181                 if (tmpbuf != insertion.begin())
 182                         max_depth = tmpbuf->getMaxDepthAfter();
 183
 184                 // Set the inset owner of this paragraph.
 185                 tmpbuf->setInsetOwner(pars[pit].inInset());
 186                 for (pos_type i = 0; i < tmpbuf->size(); ++i) {
 187                         if (tmpbuf->getChar(i) == Paragraph::META_INSET &&
 188                             !pars[pit].insetAllowed(tmpbuf->getInset(i)->lyxCode()))
 189                                 // do not track deletion of invalid insets
 190                                 tmpbuf->eraseChar(i--, false);
 191                 }
 192
 193                 tmpbuf->setChange(Change(buffer.params().trackChanges ?
 194                                          Change::INSERTED : Change::UNCHANGED));
 195         }
 196
 197         bool const empty = pars[pit].empty();
 198         if (!empty) {
 199                 // Make the buf exactly the same layout as the cursor
 200                 // paragraph.
 201                 insertion.begin()->makeSameLayout(pars[pit]);
 202         }
 203
 204         // Prepare the paragraphs and insets for insertion.
 205         // A couple of insets store buffer references so need updating.
 206         insertion.swap(in.paragraphs());
 207
 208         ParIterator fpit = par_iterator_begin(in);
 209         ParIterator fend = par_iterator_end(in);
 210
 211         for (; fpit != fend; ++fpit) {
 212                 InsetList::iterator lit = fpit->insetlist.begin();
 213                 InsetList::iterator eit = fpit->insetlist.end();
 214
 215                 for (; lit != eit; ++lit) {
 216                         switch (lit->inset->lyxCode()) {
 217                         case InsetBase::TABULAR_CODE: {
 218                                 InsetTabular * it = static_cast<InsetTabular*>(lit->inset);
 219                                 it->buffer(&buffer);
 220                                 break;
 221                         }
 222
 223                         default:
 224                                 break; // nothing
 225                         }
 226                 }
 227         }
 228         insertion.swap(in.paragraphs());
 229
 230         // Split the paragraph for inserting the buf if necessary.
 231         if (!empty)
 232                 breakParagraphConservative(buffer.params(), pars, pit, pos);
 233
 234         // Paste it!
 235         if (empty) {
 236                 pars.insert(boost::next(pars.begin(), pit),
 237                             insertion.begin(),
 238                             insertion.end());
 239
 240                 // merge the empty par with the last par of the insertion
 241                 mergeParagraph(buffer.params(), pars,
 242                                pit + insertion.size() - 1);
 243         } else {
 244                 pars.insert(boost::next(pars.begin(), pit + 1),
 245                             insertion.begin(),
 246                             insertion.end());
 247
 248                 // merge the first par of the insertion with the current par
 249                 mergeParagraph(buffer.params(), pars, pit);
 250         }
 251
 252         pit_type last_paste = pit + insertion.size() - 1;
 253
 254         // Store the new cursor position.
 255         pit = last_paste;
 256         pos = pars[last_paste].size();
 257
 258         // Join (conditionally) last pasted paragraph with next one, i.e.,
 259         // the tail of the spliced document paragraph
 260         if (!empty && last_paste + 1 != pit_type(pars.size())) {
 261                 if (pars[last_paste + 1].hasSameLayout(pars[last_paste])) {
 262                         mergeParagraph(buffer.params(), pars, last_paste);
 263                 } else if (pars[last_paste + 1].empty()) {
 264                         pars[last_paste + 1].makeSameLayout(pars[last_paste]);
 265                         mergeParagraph(buffer.params(), pars, last_paste);
 266                 } else if (pars[last_paste].empty()) {
 267                         pars[last_paste].makeSameLayout(pars[last_paste + 1]);
 268                         mergeParagraph(buffer.params(), pars, last_paste);
 269                 } else {
 270                         pars[last_paste + 1].stripLeadingSpaces();
 271                         ++last_paste;
 272                 }
 273         }
 274
 275         return make_pair(PitPosPair(pit, pos), last_paste + 1);
 276 }
 277
 278
 279 PitPosPair eraseSelectionHelper(BufferParams const & params,
 280         ParagraphList & pars,
 281         pit_type startpit, pit_type endpit,
 282         int startpos, int endpos, bool doclear)
 283 {
 284         // Start of selection is really invalid.
 285         if (startpit == pit_type(pars.size()) ||
 286             (startpos > pars[startpit].size()))
 287                 return PitPosPair(endpit, endpos);
 288
 289         // Start and end is inside same paragraph
 290         if (endpit == pit_type(pars.size()) || startpit == endpit) {
 291                 endpos -= pars[startpit].eraseChars(startpos, endpos, params.trackChanges);
 292                 return PitPosPair(endpit, endpos);
 293         }
 294
 295         // A paragraph break has to be physically removed by merging, but
 296         // only if either (1) change tracking is off, or (2) the para break
 297         // is "blue"
 298         for (pit_type pit = startpit; pit != endpit + 1;) {
 299                 // FIXME: Change tracking (MG)
 300                 bool const merge = !params.trackChanges ||
 301                                    pars[pit].isInserted(pars[pit].size());
 302                 pos_type const left  = ( pit == startpit ? startpos : 0 );
 303                 pos_type const right = ( pit == endpit ? endpos :
 304                                 pars[pit].size() + 1 );
 305                 // Logical erase only:
 306                 pars[pit].eraseChars(left, right, false);
 307                 // Separate handling of para break:
 308                 if (merge && pit != endpit &&
 309                    (pit + 1 != endpit || pars[pit].hasSameLayout(pars[pit + 1]))) {
 310                         pos_type const thissize = pars[pit].size();
 311                         if (doclear)
 312                                 pars[pit + 1].stripLeadingSpaces();
 313                         mergeParagraph(params, pars, pit);
 314                         --endpit;
 315                         if (pit == endpit)
 316                                 endpos += thissize;
 317                 } else
 318                         ++pit;
 319         }
 320
 321         // Ensure legal cursor pos:
 322         endpit = startpit;
 323         endpos = startpos;
 324         return PitPosPair(endpit, endpos);
 325 }
 326
 327
 328 void copySelectionHelper(Buffer const & buf, ParagraphList & pars,
 329         pit_type startpit, pit_type endpit,
 330         int start, int end, textclass_type tc)
 331 {
 332         BOOST_ASSERT(0 <= start && start <= pars[startpit].size());
 333         BOOST_ASSERT(0 <= end && end <= pars[endpit].size());
 334         BOOST_ASSERT(startpit != endpit || start <= end);
 335
 336         // Clone the paragraphs within the selection.
 337         ParagraphList paragraphs(boost::next(pars.begin(), startpit),
 338                                  boost::next(pars.begin(), endpit + 1));
 339
 340         ParagraphList::iterator it = paragraphs.begin();
 341         ParagraphList::iterator it_end = paragraphs.end();
 342
 343         for (; it != it_end; it++) {
 344                 // ERT paragraphs have the Language latex_language.
 345                 // This is invalid outside of ERT, so we need to change it
 346                 // to the buffer language.
 347                 if (it->ownerCode() == InsetBase::ERT_CODE) {
 348                         it->changeLanguage(buf.params(), latex_language,
 349                                            buf.getLanguage());
 350                 }
 351                 it->setInsetOwner(0);
 352         }
 353
 354         // Cut out the end of the last paragraph.
 355         Paragraph & back = paragraphs.back();
 356         // do not track deletion here; it is an internal action not visible to the user
 357         back.eraseChars(end, back.size(), false);
 358
 359         // Cut out the begin of the first paragraph
 360         Paragraph & front = paragraphs.front();
 361         // again, do not track deletion
 362         front.eraseChars(0, start, false);
 363
 364         theCuts.push(make_pair(paragraphs, tc));
 365 }
 366
 367 } // namespace anon
 368
 369
 370
 371
 372 namespace cap {
 373
 374 docstring grabAndEraseSelection(LCursor & cur)
 375 {
 376         if (!cur.selection())
 377                 return docstring();
 378         docstring res = grabSelection(cur);
 379         eraseSelection(cur);
 380         return res;
 381 }
 382
 383
 384 void switchBetweenClasses(textclass_type c1, textclass_type c2,
 385         InsetText & in, ErrorList & errorlist)
 386 {
 387         BOOST_ASSERT(!in.paragraphs().empty());
 388         if (c1 == c2)
 389                 return;
 390
 391         LyXTextClass const & tclass1 = textclasslist[c1];
 392         LyXTextClass const & tclass2 = textclasslist[c2];
 393
 394         // layouts
 395         ParIterator end = par_iterator_end(in);
 396         for (ParIterator it = par_iterator_begin(in); it != end; ++it) {
 397                 string const name = it->layout()->name();
 398                 bool hasLayout = tclass2.hasLayout(name);
 399
 400                 if (hasLayout)
 401                         it->layout(tclass2[name]);
 402                 else
 403                         it->layout(tclass2.defaultLayout());
 404
 405                 if (!hasLayout && name != tclass1.defaultLayoutName()) {
 406                         docstring const s = bformat(
 407                                                  _("Layout had to be changed from\n%1$s to %2$s\n"
 408                                                 "because of class conversion from\n%3$s to %4$s"),
 409                          from_utf8(name), from_utf8(it->layout()->name()),
 410                          from_utf8(tclass1.name()), from_utf8(tclass2.name()));
 411                         // To warn the user that something had to be done.
 412                         errorlist.push_back(ErrorItem(_("Changed Layout"), s,
 413                                                       it->id(), 0,
 414                                                       it->size()));
 415                 }
 416         }
 417
 418         // character styles
 419         InsetIterator const i_end = inset_iterator_end(in);
 420         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 421                 if (it->lyxCode() == InsetBase::CHARSTYLE_CODE) {
 422                         InsetCharStyle & inset =
 423                                 static_cast<InsetCharStyle &>(*it);
 424                         string const name = inset.params().type;
 425                         CharStyles::iterator const found_cs =
 426                                 tclass2.charstyle(name);
 427                         if (found_cs == tclass2.charstyles().end()) {
 428                                 // The character style is undefined in tclass2
 429                                 inset.setUndefined();
 430                                 docstring const s = bformat(_(
 431                                         "Character style %1$s is "
 432                                         "undefined because of class "
 433                                         "conversion from\n%2$s to %3$s"),
 434                                          from_utf8(name), from_utf8(tclass1.name()),
 435                                          from_utf8(tclass2.name()));
 436                                 // To warn the user that something had to be done.
 437                                 errorlist.push_back(ErrorItem(
 438                                         _("Undefined character style"),
 439                                         s, it.paragraph().id(), it.pos(), it.pos() + 1));
 440                         } else if (inset.undefined()) {
 441                                 // The character style is undefined in
 442                                 // tclass1 and is defined in tclass2
 443                                 inset.setDefined(found_cs);
 444                         }
 445                 }
 446         }
 447 }
 448
 449
 450 std::vector<docstring> const availableSelections(Buffer const & buffer)
 451 {
 452         vector<docstring> selList;
 453
 454         CutStack::const_iterator cit = theCuts.begin();
 455         CutStack::const_iterator end = theCuts.end();
 456         for (; cit != end; ++cit) {
 457                 // we do not use cit-> here because gcc 2.9x does not
 458                 // like it (JMarc)
 459                 ParagraphList const & pars = (*cit).first;
 460                 docstring asciiSel;
 461                 ParagraphList::const_iterator pit = pars.begin();
 462                 ParagraphList::const_iterator pend = pars.end();
 463                 for (; pit != pend; ++pit) {
 464                         asciiSel += pit->asString(buffer, false);
 465                         if (asciiSel.size() > 25) {
 466                                 asciiSel.replace(22, docstring::npos,
 467                                                  from_ascii("..."));
 468                                 break;
 469                         }
 470                 }
 471
 472                 selList.push_back(asciiSel);
 473         }
 474
 475         return selList;
 476 }
 477
 478
 479 size_type numberOfSelections()
 480 {
 481         return theCuts.size();
 482 }
 483
 484
 485 void cutSelection(LCursor & cur, bool doclear, bool realcut)
 486 {
 487         // This doesn't make sense, if there is no selection
 488         if (!cur.selection())
 489                 return;
 490
 491         // OK, we have a selection. This is always between cur.selBegin()
 492         // and cur.selEnd()
 493
 494         if (cur.inTexted()) {
 495                 LyXText * text = cur.text();
 496                 BOOST_ASSERT(text);
 497                 // Stuff what we got on the clipboard. Even if there is no selection.
 498
 499                 // There is a problem with having the stuffing here in that the
 500                 // larger the selection the slower LyX will get. This can be
 501                 // solved by running the line below only when the selection has
 502                 // finished. The solution used currently just works, to make it
 503                 // faster we need to be more clever and probably also have more
 504                 // calls to theSelection().put. (Lgb)
 505 //              theSelection().put(cur.selectionAsString(true));
 506
 507
 508                 // make sure that the depth behind the selection are restored, too
 509                 recordUndoSelection(cur);
 510                 pit_type begpit = cur.selBegin().pit();
 511                 pit_type endpit = cur.selEnd().pit();
 512
 513                 int endpos = cur.selEnd().pos();
 514
 515                 BufferParams const & bp = cur.buffer().params();
 516                 if (realcut) {
 517                         copySelectionHelper(cur.buffer(),
 518                                 text->paragraphs(),
 519                                 begpit, endpit,
 520                                 cur.selBegin().pos(), endpos,
 521                                 bp.textclass);
 522                 }
 523
 524                 boost::tie(endpit, endpos) =
 525                         eraseSelectionHelper(bp,
 526                                 text->paragraphs(),
 527                                 begpit, endpit,
 528                                 cur.selBegin().pos(), endpos,
 529                                 doclear);
 530
 531                 // sometimes necessary
 532                 if (doclear)
 533                         text->paragraphs()[begpit].stripLeadingSpaces();
 534
 535                 // cutSelection can invalidate the cursor so we need to set
 536                 // it anew. (Lgb)
 537                 // we prefer the end for when tracking changes
 538                 cur.pos() = endpos;
 539                 cur.pit() = endpit;
 540
 541                 // need a valid cursor. (Lgb)
 542                 cur.clearSelection();
 543                 updateLabels(cur.buffer());
 544
 545                 // tell tabular that a recent copy happened
 546                 dirtyTabularStack(false);
 547         }
 548
 549         if (cur.inMathed()) {
 550                 if (cur.selBegin().idx() != cur.selEnd().idx()) {
 551                         // The current selection spans more than one cell.
 552                         // Record all cells
 553                         recordUndoInset(cur);
 554                 } else {
 555                         // Record only the current cell to avoid a jumping
 556                         // cursor after undo
 557                         recordUndo(cur);
 558                 }
 559                 if (realcut)
 560                         copySelection(cur);
 561                 eraseSelection(cur);
 562         }
 563 }
 564
 565
 566 void copySelection(LCursor & cur)
 567 {
 568         // stuff the selection onto the X clipboard, from an explicit copy request
 569         theClipboard().put(cur.selectionAsString(true));
 570
 571         // this doesn't make sense, if there is no selection
 572         if (!cur.selection())
 573                 return;
 574
 575         if (cur.inTexted()) {
 576                 LyXText * text = cur.text();
 577                 BOOST_ASSERT(text);
 578                 // ok we have a selection. This is always between cur.selBegin()
 579                 // and sel_end cursor
 580
 581                 // copy behind a space if there is one
 582                 ParagraphList & pars = text->paragraphs();
 583                 pos_type pos = cur.selBegin().pos();
 584                 pit_type par = cur.selBegin().pit();
 585                 while (pos < pars[par].size()
 586                                          && pars[par].isLineSeparator(pos)
 587                                          && (par != cur.selEnd().pit() || pos < cur.selEnd().pos()))
 588                         ++pos;
 589
 590                 copySelectionHelper(cur.buffer(), pars, par, cur.selEnd().pit(),
 591                         pos, cur.selEnd().pos(), cur.buffer().params().textclass);
 592         }
 593
 594         if (cur.inMathed()) {
 595                 //lyxerr << "copySelection in mathed" << endl;
 596                 ParagraphList pars;
 597                 Paragraph par;
 598                 BufferParams const & bp = cur.buffer().params();
 599                 par.layout(bp.getLyXTextClass().defaultLayout());
 600                 par.insert(0, grabSelection(cur), LyXFont(), Change(Change::UNCHANGED));
 601                 pars.push_back(par);
 602                 theCuts.push(make_pair(pars, bp.textclass));
 603         }
 604         // tell tabular that a recent copy happened
 605         dirtyTabularStack(false);
 606 }
 607
 608
 609 docstring getSelection(Buffer const & buf, size_t sel_index)
 610 {
 611         return sel_index < theCuts.size()
 612                 ? theCuts[sel_index].first.back().asString(buf, false)
 613                 : docstring();
 614 }
 615
 616
 617 void pasteParagraphList(LCursor & cur, ParagraphList const & parlist,
 618                         textclass_type textclass, ErrorList & errorList)
 619 {
 620         if (cur.inTexted()) {
 621                 LyXText * text = cur.text();
 622                 BOOST_ASSERT(text);
 623
 624                 pit_type endpit;
 625                 PitPosPair ppp;
 626
 627                 boost::tie(ppp, endpit) =
 628                         pasteSelectionHelper(cur, parlist,
 629                                              textclass, errorList);
 630                 updateLabels(cur.buffer());
 631                 cur.clearSelection();
 632                 text->setCursor(cur, ppp.first, ppp.second);
 633         }
 634
 635         // mathed is handled in InsetMathNest/InsetMathGrid
 636         BOOST_ASSERT(!cur.inMathed());
 637 }
 638
 639
 640 void pasteSelection(LCursor & cur, ErrorList & errorList, size_t sel_index)
 641 {
 642         // this does not make sense, if there is nothing to paste
 643         if (!checkPastePossible(sel_index))
 644                 return;
 645
 646         recordUndo(cur);
 647         pasteParagraphList(cur, theCuts[sel_index].first,
 648                            theCuts[sel_index].second, errorList);
 649         cur.setSelection();
 650 }
 651
 652
 653 // simple replacing. The font of the first selected character is used
 654 void replaceSelectionWithString(LCursor & cur, string const & str, bool backwards)
 655 {
 656         recordUndo(cur);
 657         DocIterator selbeg = cur.selectionBegin();
 658
 659         // Get font setting before we cut
 660         LyXFont const font =
 661                 selbeg.paragraph().getFontSettings(cur.buffer().params(), selbeg.pos());
 662
 663         // Insert the new string
 664         pos_type pos = cur.selEnd().pos();
 665         Paragraph & par = cur.selEnd().paragraph();
 666         string::const_iterator cit = str.begin();
 667         string::const_iterator end = str.end();
 668         for (; cit != end; ++cit, ++pos)
 669                 par.insertChar(pos, (*cit), font, cur.buffer().params().trackChanges);
 670
 671         // Cut the selection
 672         cutSelection(cur, true, false);
 673
 674         // select the replacement
 675         if (backwards) {
 676                 selbeg.pos() += str.length();
 677                 cur.setSelection(selbeg, -int(str.length()));
 678         } else
 679                 cur.setSelection(selbeg, str.length());
 680 }
 681
 682
 683 void replaceSelection(LCursor & cur)
 684 {
 685         if (cur.selection())
 686                 cutSelection(cur, true, false);
 687 }
 688
 689
 690 void eraseSelection(LCursor & cur)
 691 {
 692         //lyxerr << "LCursor::eraseSelection begin: " << cur << endl;
 693         CursorSlice const & i1 = cur.selBegin();
 694         CursorSlice const & i2 = cur.selEnd();
 695         if (i1.inset().asInsetMath()) {
 696                 cur.top() = i1;
 697                 if (i1.idx() == i2.idx()) {
 698                         i1.cell().erase(i1.pos(), i2.pos());
 699                         // We may have deleted i1.cell(cur.pos()).
 700                         // Make sure that pos is valid.
 701                         if (cur.pos() > cur.lastpos())
 702                                 cur.pos() = cur.lastpos();
 703                 } else {
 704                         InsetMath * p = i1.asInsetMath();
 705                         InsetBase::row_type r1, r2;
 706                         InsetBase::col_type c1, c2;
 707                         region(i1, i2, r1, r2, c1, c2);
 708                         for (InsetBase::row_type row = r1; row <= r2; ++row)
 709                                 for (InsetBase::col_type col = c1; col <= c2; ++col)
 710                                         p->cell(p->index(row, col)).clear();
 711                         // We've deleted the whole cell. Only pos 0 is valid.
 712                         cur.pos() = 0;
 713                 }
 714                 // need a valid cursor. (Lgb)
 715                 cur.clearSelection();
 716         } else {
 717                 lyxerr << "can't erase this selection 1" << endl;
 718         }
 719         //lyxerr << "LCursor::eraseSelection end: " << cur << endl;
 720 }
 721
 722
 723 void selDel(LCursor & cur)
 724 {
 725         //lyxerr << "LCursor::selDel" << endl;
 726         if (cur.selection())
 727                 eraseSelection(cur);
 728 }
 729
 730
 731 void selClearOrDel(LCursor & cur)
 732 {
 733         //lyxerr << "LCursor::selClearOrDel" << endl;
 734         if (lyxrc.auto_region_delete)
 735                 selDel(cur);
 736         else
 737                 cur.selection() = false;
 738 }
 739
 740
 741 docstring grabSelection(LCursor const & cur)
 742 {
 743         if (!cur.selection())
 744                 return docstring();
 745
 746         // FIXME: What is wrong with the following?
 747 #if 0
 748         std::ostringstream os;
 749         for (DocIterator dit = cur.selectionBegin();
 750              dit != cur.selectionEnd(); dit.forwardPos())
 751                 os << asString(dit.cell());
 752         return os.str();
 753 #endif
 754
 755         CursorSlice i1 = cur.selBegin();
 756         CursorSlice i2 = cur.selEnd();
 757
 758         if (i1.idx() == i2.idx()) {
 759                 if (i1.inset().asInsetMath()) {
 760                         MathArray::const_iterator it = i1.cell().begin();
 761                         return asString(MathArray(it + i1.pos(), it + i2.pos()));
 762                 } else {
 763                         return from_ascii("unknown selection 1");
 764                 }
 765         }
 766
 767         InsetBase::row_type r1, r2;
 768         InsetBase::col_type c1, c2;
 769         region(i1, i2, r1, r2, c1, c2);
 770
 771         docstring data;
 772         if (i1.inset().asInsetMath()) {
 773                 for (InsetBase::row_type row = r1; row <= r2; ++row) {
 774                         if (row > r1)
 775                                 data += "\\\\";
 776                         for (InsetBase::col_type col = c1; col <= c2; ++col) {
 777                                 if (col > c1)
 778                                         data += '&';
 779                                 data += asString(i1.asInsetMath()->
 780                                         cell(i1.asInsetMath()->index(row, col)));
 781                         }
 782                 }
 783         } else {
 784                 data = from_ascii("unknown selection 2");
 785         }
 786         return data;
 787 }
 788
 789
 790 void dirtyTabularStack(bool b)
 791 {
 792         dirty_tabular_stack_ = b;
 793 }
 794
 795
 796 bool tabularStackDirty()
 797 {
 798         return dirty_tabular_stack_;
 799 }
 800
 801
 802 } // namespace cap
 803
 804 } // namespace lyx