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 : pars[pit].size() + 1);
 304                 // Logical erase only:
 305                 pars[pit].eraseChars(left, right, false);
 306                 // Separate handling of para break:
 307                 if (merge && pit != endpit &&
 308                     (pit + 1 != endpit || pars[pit].hasSameLayout(pars[pit + 1]))) {
 309                         pos_type const thissize = pars[pit].size();
 310                         if (doclear)
 311                                 pars[pit + 1].stripLeadingSpaces();
 312                         mergeParagraph(params, pars, pit);
 313                         --endpit;
 314                         if (pit == endpit)
 315                                 endpos += thissize;
 316                 } else
 317                         ++pit;
 318         }
 319
 320         // Ensure legal cursor pos:
 321         endpit = startpit;
 322         endpos = startpos;
 323         return PitPosPair(endpit, endpos);
 324 }
 325
 326
 327 void copySelectionHelper(Buffer const & buf, ParagraphList & pars,
 328         pit_type startpit, pit_type endpit,
 329         int start, int end, textclass_type tc)
 330 {
 331         BOOST_ASSERT(0 <= start && start <= pars[startpit].size());
 332         BOOST_ASSERT(0 <= end && end <= pars[endpit].size());
 333         BOOST_ASSERT(startpit != endpit || start <= end);
 334
 335         // Clone the paragraphs within the selection.
 336         ParagraphList paragraphs(boost::next(pars.begin(), startpit),
 337                                  boost::next(pars.begin(), endpit + 1));
 338
 339         ParagraphList::iterator it = paragraphs.begin();
 340         ParagraphList::iterator it_end = paragraphs.end();
 341
 342         for (; it != it_end; it++) {
 343                 // ERT paragraphs have the Language latex_language.
 344                 // This is invalid outside of ERT, so we need to change it
 345                 // to the buffer language.
 346                 if (it->ownerCode() == InsetBase::ERT_CODE) {
 347                         it->changeLanguage(buf.params(), latex_language,
 348                                            buf.getLanguage());
 349                 }
 350                 it->setInsetOwner(0);
 351         }
 352
 353         // Cut out the end of the last paragraph.
 354         Paragraph & back = paragraphs.back();
 355         // do not track deletion here; it is an internal action not visible to the user
 356         back.eraseChars(end, back.size(), false);
 357
 358         // Cut out the begin of the first paragraph
 359         Paragraph & front = paragraphs.front();
 360         // again, do not track deletion
 361         front.eraseChars(0, start, false);
 362
 363         theCuts.push(make_pair(paragraphs, tc));
 364 }
 365
 366 } // namespace anon
 367
 368
 369
 370
 371 namespace cap {
 372
 373 docstring grabAndEraseSelection(LCursor & cur)
 374 {
 375         if (!cur.selection())
 376                 return docstring();
 377         docstring res = grabSelection(cur);
 378         eraseSelection(cur);
 379         return res;
 380 }
 381
 382
 383 void switchBetweenClasses(textclass_type c1, textclass_type c2,
 384         InsetText & in, ErrorList & errorlist)
 385 {
 386         BOOST_ASSERT(!in.paragraphs().empty());
 387         if (c1 == c2)
 388                 return;
 389
 390         LyXTextClass const & tclass1 = textclasslist[c1];
 391         LyXTextClass const & tclass2 = textclasslist[c2];
 392
 393         // layouts
 394         ParIterator end = par_iterator_end(in);
 395         for (ParIterator it = par_iterator_begin(in); it != end; ++it) {
 396                 string const name = it->layout()->name();
 397                 bool hasLayout = tclass2.hasLayout(name);
 398
 399                 if (hasLayout)
 400                         it->layout(tclass2[name]);
 401                 else
 402                         it->layout(tclass2.defaultLayout());
 403
 404                 if (!hasLayout && name != tclass1.defaultLayoutName()) {
 405                         docstring const s = bformat(
 406                                                  _("Layout had to be changed from\n%1$s to %2$s\n"
 407                                                 "because of class conversion from\n%3$s to %4$s"),
 408                          from_utf8(name), from_utf8(it->layout()->name()),
 409                          from_utf8(tclass1.name()), from_utf8(tclass2.name()));
 410                         // To warn the user that something had to be done.
 411                         errorlist.push_back(ErrorItem(_("Changed Layout"), s,
 412                                                       it->id(), 0,
 413                                                       it->size()));
 414                 }
 415         }
 416
 417         // character styles
 418         InsetIterator const i_end = inset_iterator_end(in);
 419         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 420                 if (it->lyxCode() == InsetBase::CHARSTYLE_CODE) {
 421                         InsetCharStyle & inset =
 422                                 static_cast<InsetCharStyle &>(*it);
 423                         string const name = inset.params().type;
 424                         CharStyles::iterator const found_cs =
 425                                 tclass2.charstyle(name);
 426                         if (found_cs == tclass2.charstyles().end()) {
 427                                 // The character style is undefined in tclass2
 428                                 inset.setUndefined();
 429                                 docstring const s = bformat(_(
 430                                         "Character style %1$s is "
 431                                         "undefined because of class "
 432                                         "conversion from\n%2$s to %3$s"),
 433                                          from_utf8(name), from_utf8(tclass1.name()),
 434                                          from_utf8(tclass2.name()));
 435                                 // To warn the user that something had to be done.
 436                                 errorlist.push_back(ErrorItem(
 437                                         _("Undefined character style"),
 438                                         s, it.paragraph().id(), it.pos(), it.pos() + 1));
 439                         } else if (inset.undefined()) {
 440                                 // The character style is undefined in
 441                                 // tclass1 and is defined in tclass2
 442                                 inset.setDefined(found_cs);
 443                         }
 444                 }
 445         }
 446 }
 447
 448
 449 std::vector<docstring> const availableSelections(Buffer const & buffer)
 450 {
 451         vector<docstring> selList;
 452
 453         CutStack::const_iterator cit = theCuts.begin();
 454         CutStack::const_iterator end = theCuts.end();
 455         for (; cit != end; ++cit) {
 456                 // we do not use cit-> here because gcc 2.9x does not
 457                 // like it (JMarc)
 458                 ParagraphList const & pars = (*cit).first;
 459                 docstring asciiSel;
 460                 ParagraphList::const_iterator pit = pars.begin();
 461                 ParagraphList::const_iterator pend = pars.end();
 462                 for (; pit != pend; ++pit) {
 463                         asciiSel += pit->asString(buffer, false);
 464                         if (asciiSel.size() > 25) {
 465                                 asciiSel.replace(22, docstring::npos,
 466                                                  from_ascii("..."));
 467                                 break;
 468                         }
 469                 }
 470
 471                 selList.push_back(asciiSel);
 472         }
 473
 474         return selList;
 475 }
 476
 477
 478 size_type numberOfSelections()
 479 {
 480         return theCuts.size();
 481 }
 482
 483
 484 void cutSelection(LCursor & cur, bool doclear, bool realcut)
 485 {
 486         // This doesn't make sense, if there is no selection
 487         if (!cur.selection())
 488                 return;
 489
 490         // OK, we have a selection. This is always between cur.selBegin()
 491         // and cur.selEnd()
 492
 493         if (cur.inTexted()) {
 494                 LyXText * text = cur.text();
 495                 BOOST_ASSERT(text);
 496                 // Stuff what we got on the clipboard. Even if there is no selection.
 497
 498                 // There is a problem with having the stuffing here in that the
 499                 // larger the selection the slower LyX will get. This can be
 500                 // solved by running the line below only when the selection has
 501                 // finished. The solution used currently just works, to make it
 502                 // faster we need to be more clever and probably also have more
 503                 // calls to theSelection().put. (Lgb)
 504 //              theSelection().put(cur.selectionAsString(true));
 505
 506
 507                 // make sure that the depth behind the selection are restored, too
 508                 recordUndoSelection(cur);
 509                 pit_type begpit = cur.selBegin().pit();
 510                 pit_type endpit = cur.selEnd().pit();
 511
 512                 int endpos = cur.selEnd().pos();
 513
 514                 BufferParams const & bp = cur.buffer().params();
 515                 if (realcut) {
 516                         copySelectionHelper(cur.buffer(),
 517                                 text->paragraphs(),
 518                                 begpit, endpit,
 519                                 cur.selBegin().pos(), endpos,
 520                                 bp.textclass);
 521                 }
 522
 523                 boost::tie(endpit, endpos) =
 524                         eraseSelectionHelper(bp,
 525                                 text->paragraphs(),
 526                                 begpit, endpit,
 527                                 cur.selBegin().pos(), endpos,
 528                                 doclear);
 529
 530                 // sometimes necessary
 531                 if (doclear)
 532                         text->paragraphs()[begpit].stripLeadingSpaces();
 533
 534                 // cutSelection can invalidate the cursor so we need to set
 535                 // it anew. (Lgb)
 536                 // we prefer the end for when tracking changes
 537                 cur.pos() = endpos;
 538                 cur.pit() = endpit;
 539
 540                 // need a valid cursor. (Lgb)
 541                 cur.clearSelection();
 542                 updateLabels(cur.buffer());
 543
 544                 // tell tabular that a recent copy happened
 545                 dirtyTabularStack(false);
 546         }
 547
 548         if (cur.inMathed()) {
 549                 if (cur.selBegin().idx() != cur.selEnd().idx()) {
 550                         // The current selection spans more than one cell.
 551                         // Record all cells
 552                         recordUndoInset(cur);
 553                 } else {
 554                         // Record only the current cell to avoid a jumping
 555                         // cursor after undo
 556                         recordUndo(cur);
 557                 }
 558                 if (realcut)
 559                         copySelection(cur);
 560                 eraseSelection(cur);
 561         }
 562 }
 563
 564
 565 void copySelection(LCursor & cur)
 566 {
 567         // stuff the selection onto the X clipboard, from an explicit copy request
 568         theClipboard().put(cur.selectionAsString(true));
 569
 570         // this doesn't make sense, if there is no selection
 571         if (!cur.selection())
 572                 return;
 573
 574         if (cur.inTexted()) {
 575                 LyXText * text = cur.text();
 576                 BOOST_ASSERT(text);
 577                 // ok we have a selection. This is always between cur.selBegin()
 578                 // and sel_end cursor
 579
 580                 // copy behind a space if there is one
 581                 ParagraphList & pars = text->paragraphs();
 582                 pos_type pos = cur.selBegin().pos();
 583                 pit_type par = cur.selBegin().pit();
 584                 while (pos < pars[par].size()
 585                                          && pars[par].isLineSeparator(pos)
 586                                          && (par != cur.selEnd().pit() || pos < cur.selEnd().pos()))
 587                         ++pos;
 588
 589                 copySelectionHelper(cur.buffer(), pars, par, cur.selEnd().pit(),
 590                         pos, cur.selEnd().pos(), cur.buffer().params().textclass);
 591         }
 592
 593         if (cur.inMathed()) {
 594                 //lyxerr << "copySelection in mathed" << endl;
 595                 ParagraphList pars;
 596                 Paragraph par;
 597                 BufferParams const & bp = cur.buffer().params();
 598                 par.layout(bp.getLyXTextClass().defaultLayout());
 599                 par.insert(0, grabSelection(cur), LyXFont(), Change(Change::UNCHANGED));
 600                 pars.push_back(par);
 601                 theCuts.push(make_pair(pars, bp.textclass));
 602         }
 603         // tell tabular that a recent copy happened
 604         dirtyTabularStack(false);
 605 }
 606
 607
 608 docstring getSelection(Buffer const & buf, size_t sel_index)
 609 {
 610         return sel_index < theCuts.size()
 611                 ? theCuts[sel_index].first.back().asString(buf, false)
 612                 : docstring();
 613 }
 614
 615
 616 void pasteParagraphList(LCursor & cur, ParagraphList const & parlist,
 617                         textclass_type textclass, ErrorList & errorList)
 618 {
 619         if (cur.inTexted()) {
 620                 LyXText * text = cur.text();
 621                 BOOST_ASSERT(text);
 622
 623                 pit_type endpit;
 624                 PitPosPair ppp;
 625
 626                 boost::tie(ppp, endpit) =
 627                         pasteSelectionHelper(cur, parlist,
 628                                              textclass, errorList);
 629                 updateLabels(cur.buffer());
 630                 cur.clearSelection();
 631                 text->setCursor(cur, ppp.first, ppp.second);
 632         }
 633
 634         // mathed is handled in InsetMathNest/InsetMathGrid
 635         BOOST_ASSERT(!cur.inMathed());
 636 }
 637
 638
 639 void pasteSelection(LCursor & cur, ErrorList & errorList, size_t sel_index)
 640 {
 641         // this does not make sense, if there is nothing to paste
 642         if (!checkPastePossible(sel_index))
 643                 return;
 644
 645         recordUndo(cur);
 646         pasteParagraphList(cur, theCuts[sel_index].first,
 647                            theCuts[sel_index].second, errorList);
 648         cur.setSelection();
 649 }
 650
 651
 652 // simple replacing. The font of the first selected character is used
 653 void replaceSelectionWithString(LCursor & cur, string const & str, bool backwards)
 654 {
 655         recordUndo(cur);
 656         DocIterator selbeg = cur.selectionBegin();
 657
 658         // Get font setting before we cut
 659         LyXFont const font =
 660                 selbeg.paragraph().getFontSettings(cur.buffer().params(), selbeg.pos());
 661
 662         // Insert the new string
 663         pos_type pos = cur.selEnd().pos();
 664         Paragraph & par = cur.selEnd().paragraph();
 665         string::const_iterator cit = str.begin();
 666         string::const_iterator end = str.end();
 667         for (; cit != end; ++cit, ++pos)
 668                 par.insertChar(pos, (*cit), font, cur.buffer().params().trackChanges);
 669
 670         // Cut the selection
 671         cutSelection(cur, true, false);
 672
 673         // select the replacement
 674         if (backwards) {
 675                 selbeg.pos() += str.length();
 676                 cur.setSelection(selbeg, -int(str.length()));
 677         } else
 678                 cur.setSelection(selbeg, str.length());
 679 }
 680
 681
 682 void replaceSelection(LCursor & cur)
 683 {
 684         if (cur.selection())
 685                 cutSelection(cur, true, false);
 686 }
 687
 688
 689 void eraseSelection(LCursor & cur)
 690 {
 691         //lyxerr << "LCursor::eraseSelection begin: " << cur << endl;
 692         CursorSlice const & i1 = cur.selBegin();
 693         CursorSlice const & i2 = cur.selEnd();
 694         if (i1.inset().asInsetMath()) {
 695                 cur.top() = i1;
 696                 if (i1.idx() == i2.idx()) {
 697                         i1.cell().erase(i1.pos(), i2.pos());
 698                         // We may have deleted i1.cell(cur.pos()).
 699                         // Make sure that pos is valid.
 700                         if (cur.pos() > cur.lastpos())
 701                                 cur.pos() = cur.lastpos();
 702                 } else {
 703                         InsetMath * p = i1.asInsetMath();
 704                         InsetBase::row_type r1, r2;
 705                         InsetBase::col_type c1, c2;
 706                         region(i1, i2, r1, r2, c1, c2);
 707                         for (InsetBase::row_type row = r1; row <= r2; ++row)
 708                                 for (InsetBase::col_type col = c1; col <= c2; ++col)
 709                                         p->cell(p->index(row, col)).clear();
 710                         // We've deleted the whole cell. Only pos 0 is valid.
 711                         cur.pos() = 0;
 712                 }
 713                 // need a valid cursor. (Lgb)
 714                 cur.clearSelection();
 715         } else {
 716                 lyxerr << "can't erase this selection 1" << endl;
 717         }
 718         //lyxerr << "LCursor::eraseSelection end: " << cur << endl;
 719 }
 720
 721
 722 void selDel(LCursor & cur)
 723 {
 724         //lyxerr << "LCursor::selDel" << endl;
 725         if (cur.selection())
 726                 eraseSelection(cur);
 727 }
 728
 729
 730 void selClearOrDel(LCursor & cur)
 731 {
 732         //lyxerr << "LCursor::selClearOrDel" << endl;
 733         if (lyxrc.auto_region_delete)
 734                 selDel(cur);
 735         else
 736                 cur.selection() = false;
 737 }
 738
 739
 740 docstring grabSelection(LCursor const & cur)
 741 {
 742         if (!cur.selection())
 743                 return docstring();
 744
 745         // FIXME: What is wrong with the following?
 746 #if 0
 747         std::ostringstream os;
 748         for (DocIterator dit = cur.selectionBegin();
 749              dit != cur.selectionEnd(); dit.forwardPos())
 750                 os << asString(dit.cell());
 751         return os.str();
 752 #endif
 753
 754         CursorSlice i1 = cur.selBegin();
 755         CursorSlice i2 = cur.selEnd();
 756
 757         if (i1.idx() == i2.idx()) {
 758                 if (i1.inset().asInsetMath()) {
 759                         MathArray::const_iterator it = i1.cell().begin();
 760                         return asString(MathArray(it + i1.pos(), it + i2.pos()));
 761                 } else {
 762                         return from_ascii("unknown selection 1");
 763                 }
 764         }
 765
 766         InsetBase::row_type r1, r2;
 767         InsetBase::col_type c1, c2;
 768         region(i1, i2, r1, r2, c1, c2);
 769
 770         docstring data;
 771         if (i1.inset().asInsetMath()) {
 772                 for (InsetBase::row_type row = r1; row <= r2; ++row) {
 773                         if (row > r1)
 774                                 data += "\\\\";
 775                         for (InsetBase::col_type col = c1; col <= c2; ++col) {
 776                                 if (col > c1)
 777                                         data += '&';
 778                                 data += asString(i1.asInsetMath()->
 779                                         cell(i1.asInsetMath()->index(row, col)));
 780                         }
 781                 }
 782         } else {
 783                 data = from_ascii("unknown selection 2");
 784         }
 785         return data;
 786 }
 787
 788
 789 void dirtyTabularStack(bool b)
 790 {
 791         dirty_tabular_stack_ = b;
 792 }
 793
 794
 795 bool tabularStackDirty()
 796 {
 797         return dirty_tabular_stack_;
 798 }
 799
 800
 801 } // namespace cap
 802
 803 } // namespace lyx