src/CutAndPaste.C

   1 /*
   2  * \file CutAndPaste.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Jürgen Vigna
   7  * \author Lars Gullik Bjønnes
   8  * \author Alfredo Braunstein
   9  *
  10  * Full author contact details are available in file CREDITS.
  11  */
  12
  13 #include <config.h>
  14
  15 #include "CutAndPaste.h"
  16
  17 #include "buffer.h"
  18 #include "buffer_funcs.h"
  19 #include "bufferparams.h"
  20 #include "BufferView.h"
  21 #include "cursor.h"
  22 #include "debug.h"
  23 #include "errorlist.h"
  24 #include "funcrequest.h"
  25 #include "gettext.h"
  26 #include "insetiterator.h"
  27 #include "language.h"
  28 #include "lfuns.h"
  29 #include "lyxrc.h"
  30 #include "lyxtext.h"
  31 #include "lyxtextclasslist.h"
  32 #include "paragraph.h"
  33 #include "paragraph_funcs.h"
  34 #include "ParagraphParameters.h"
  35 #include "ParagraphList_fwd.h"
  36 #include "pariterator.h"
  37 #include "undo.h"
  38
  39 #include "insets/insetcharstyle.h"
  40 #include "insets/insettabular.h"
  41
  42 #include "mathed/math_data.h"
  43 #include "mathed/math_inset.h"
  44 #include "mathed/math_support.h"
  45
  46 #include "support/lstrings.h"
  47
  48 #include "frontends/Gui.h"
  49 #include "frontends/LyXView.h"
  50 #include "frontends/Clipboard.h"
  51
  52 #include <boost/tuple/tuple.hpp>
  53
  54 using lyx::pos_type;
  55 using lyx::pit_type;
  56 using lyx::textclass_type;
  57
  58 using lyx::support::bformat;
  59
  60 using lyx::frontend::Gui;
  61 using lyx::frontend::Clipboard;
  62
  63 using std::endl;
  64 using std::for_each;
  65 using std::make_pair;
  66 using std::pair;
  67 using std::vector;
  68 using std::string;
  69
  70
  71 namespace {
  72
  73 typedef std::pair<lyx::pit_type, int> PitPosPair;
  74
  75 typedef limited_stack<pair<ParagraphList, textclass_type> > CutStack;
  76
  77 CutStack theCuts(10);
  78
  79 // store whether the tabular stack is newer than the normal copy stack
  80 // FIXME: this is a workaround for bug 1919. Should be removed for 1.5,
  81 // when we (hopefully) have a one-for-all paste mechanism.
  82 bool dirty_tabular_stack_;
  83
  84 class resetParagraph : public std::unary_function<Paragraph, Buffer const &> {
  85 public:
  86         resetParagraph(Buffer const & b) : buffer_(b) {}
  87         void operator()(Paragraph & p) const {
  88                 p.cleanChanges();
  89                 // ERT paragraphs have the Language latex_language.
  90                 // This is invalid outside of ERT, so we need to change it
  91                 // to the buffer language.
  92                 if (p.ownerCode() == InsetBase::ERT_CODE) {
  93                         p.changeLanguage(buffer_.params(), latex_language,
  94                                          buffer_.getLanguage());
  95                 }
  96                 p.setInsetOwner(0);
  97         }
  98 private:
  99         Buffer const & buffer_;
 100 };
 101
 102
 103 void region(CursorSlice const & i1, CursorSlice const & i2,
 104         InsetBase::row_type & r1, InsetBase::row_type & r2,
 105         InsetBase::col_type & c1, InsetBase::col_type & c2)
 106 {
 107         InsetBase & p = i1.inset();
 108         c1 = p.col(i1.idx());
 109         c2 = p.col(i2.idx());
 110         if (c1 > c2)
 111                 std::swap(c1, c2);
 112         r1 = p.row(i1.idx());
 113         r2 = p.row(i2.idx());
 114         if (r1 > r2)
 115                 std::swap(r1, r2);
 116 }
 117
 118
 119 bool checkPastePossible(int index)
 120 {
 121         return size_t(index) < theCuts.size() && !theCuts[index].first.empty();
 122 }
 123
 124
 125 pair<PitPosPair, pit_type>
 126 pasteSelectionHelper(Buffer const & buffer,
 127                      ParagraphList & pars, pit_type pit, int pos,
 128                      ParagraphList const & parlist, textclass_type textclass,
 129                      ErrorList & errorlist)
 130 {
 131         if (parlist.empty())
 132                 return make_pair(PitPosPair(pit, pos), pit);
 133
 134         BOOST_ASSERT (pos <= pars[pit].size());
 135
 136         // Make a copy of the CaP paragraphs.
 137         ParagraphList insertion = parlist;
 138         textclass_type const tc = buffer.params().textclass;
 139
 140         // Now remove all out of the pars which is NOT allowed in the
 141         // new environment and set also another font if that is required.
 142
 143         // Convert newline to paragraph break in ERT inset.
 144         // This should not be here!
 145         if (pars[pit].inInset() &&
 146             pars[pit].inInset()->lyxCode() == InsetBase::ERT_CODE) {
 147                 for (ParagraphList::size_type i = 0; i < insertion.size(); ++i) {
 148                         for (pos_type j = 0; j < insertion[i].size(); ++j) {
 149                                 if (insertion[i].isNewline(j)) {
 150                                         insertion[i].erase(j);
 151                                         breakParagraphConservative(
 152                                                         buffer.params(),
 153                                                         insertion, i, j);
 154                                 }
 155                         }
 156                 }
 157         }
 158
 159         // Make sure there is no class difference.
 160         InsetText in;
 161         // This works without copying any paragraph data because we have
 162         // a specialized swap method for ParagraphList. This is important
 163         // since we store pointers to insets at some places and we don't
 164         // want to invalidate them.
 165         insertion.swap(in.paragraphs());
 166         lyx::cap::switchBetweenClasses(textclass, tc, in, errorlist);
 167         insertion.swap(in.paragraphs());
 168
 169         ParagraphList::iterator tmpbuf = insertion.begin();
 170         int depth_delta = pars[pit].params().depth() - tmpbuf->params().depth();
 171
 172         Paragraph::depth_type max_depth = pars[pit].getMaxDepthAfter();
 173
 174         for (; tmpbuf != insertion.end(); ++tmpbuf) {
 175                 // If we have a negative jump so that the depth would
 176                 // go below 0 depth then we have to redo the delta to
 177                 // this new max depth level so that subsequent
 178                 // paragraphs are aligned correctly to this paragraph
 179                 // at level 0.
 180                 if (int(tmpbuf->params().depth()) + depth_delta < 0)
 181                         depth_delta = 0;
 182
 183                 // Set the right depth so that we are not too deep or shallow.
 184                 tmpbuf->params().depth(tmpbuf->params().depth() + depth_delta);
 185                 if (tmpbuf->params().depth() > max_depth)
 186                         tmpbuf->params().depth(max_depth);
 187
 188                 // Only set this from the 2nd on as the 2nd depends
 189                 // for maxDepth still on pit.
 190                 if (tmpbuf != insertion.begin())
 191                         max_depth = tmpbuf->getMaxDepthAfter();
 192
 193                 // Set the inset owner of this paragraph.
 194                 tmpbuf->setInsetOwner(pars[pit].inInset());
 195                 for (pos_type i = 0; i < tmpbuf->size(); ++i) {
 196                         if (tmpbuf->getChar(i) == Paragraph::META_INSET &&
 197                             !pars[pit].insetAllowed(tmpbuf->getInset(i)->lyxCode()))
 198                                 tmpbuf->erase(i--);
 199                 }
 200
 201                 // reset change tracking status
 202                 if (buffer.params().tracking_changes)
 203                         tmpbuf->cleanChanges(Paragraph::trackingOn);
 204                 else
 205                         tmpbuf->cleanChanges(Paragraph::trackingOff);
 206         }
 207
 208         bool const empty = pars[pit].empty();
 209         if (!empty) {
 210                 // Make the buf exactly the same layout as the cursor
 211                 // paragraph.
 212                 insertion.begin()->makeSameLayout(pars[pit]);
 213         }
 214
 215         // Prepare the paragraphs and insets for insertion.
 216         // A couple of insets store buffer references so need updating.
 217         insertion.swap(in.paragraphs());
 218
 219         ParIterator fpit = par_iterator_begin(in);
 220         ParIterator fend = par_iterator_end(in);
 221
 222         for (; fpit != fend; ++fpit) {
 223                 InsetList::iterator lit = fpit->insetlist.begin();
 224                 InsetList::iterator eit = fpit->insetlist.end();
 225
 226                 for (; lit != eit; ++lit) {
 227                         switch (lit->inset->lyxCode()) {
 228                         case InsetBase::TABULAR_CODE: {
 229                                 InsetTabular * it = static_cast<InsetTabular*>(lit->inset);
 230                                 it->buffer(&buffer);
 231                                 break;
 232                         }
 233
 234                         default:
 235                                 break; // nothing
 236                         }
 237                 }
 238         }
 239         insertion.swap(in.paragraphs());
 240
 241         // Split the paragraph for inserting the buf if necessary.
 242         if (!empty)
 243                 breakParagraphConservative(buffer.params(), pars, pit, pos);
 244
 245         // Paste it!
 246         if (empty) {
 247                 pars.insert(boost::next(pars.begin(), pit),
 248                             insertion.begin(),
 249                             insertion.end());
 250
 251                 // merge the empty par with the last par of the insertion
 252                 mergeParagraph(buffer.params(), pars,
 253                                pit + insertion.size() - 1);
 254         } else {
 255                 pars.insert(boost::next(pars.begin(), pit + 1),
 256                             insertion.begin(),
 257                             insertion.end());
 258
 259                 // merge the first par of the insertion with the current par
 260                 mergeParagraph(buffer.params(), pars, pit);
 261         }
 262
 263         pit_type last_paste = pit + insertion.size() - 1;
 264
 265         // Store the new cursor position.
 266         pit = last_paste;
 267         pos = pars[last_paste].size();
 268
 269         // Join (conditionally) last pasted paragraph with next one, i.e.,
 270         // the tail of the spliced document paragraph
 271         if (!empty && last_paste + 1 != pit_type(pars.size())) {
 272                 if (pars[last_paste + 1].hasSameLayout(pars[last_paste])) {
 273                         mergeParagraph(buffer.params(), pars, last_paste);
 274                 } else if (pars[last_paste + 1].empty()) {
 275                         pars[last_paste + 1].makeSameLayout(pars[last_paste]);
 276                         mergeParagraph(buffer.params(), pars, last_paste);
 277                 } else if (pars[last_paste].empty()) {
 278                         pars[last_paste].makeSameLayout(pars[last_paste + 1]);
 279                         mergeParagraph(buffer.params(), pars, last_paste);
 280                 } else {
 281                         pars[last_paste + 1].stripLeadingSpaces();
 282                         ++last_paste;
 283                 }
 284         }
 285
 286         return make_pair(PitPosPair(pit, pos), last_paste + 1);
 287 }
 288
 289
 290 PitPosPair eraseSelectionHelper(BufferParams const & params,
 291         ParagraphList & pars,
 292         pit_type startpit, pit_type endpit,
 293         int startpos, int endpos, bool doclear)
 294 {
 295         // Start of selection is really invalid.
 296         if (startpit == pit_type(pars.size()) ||
 297             (startpos > pars[startpit].size()))
 298                 return PitPosPair(endpit, endpos);
 299
 300         // Start and end is inside same paragraph
 301         if (endpit == pit_type(pars.size()) ||
 302             startpit == endpit) {
 303                 endpos -= pars[startpit].erase(startpos, endpos);
 304                 return PitPosPair(endpit, endpos);
 305         }
 306
 307         // A paragraph break has to be physically removed by merging, but
 308         // only if either (1) change tracking is off, or (2) the para break
 309         // is "blue"
 310         for (pit_type pit = startpit; pit != endpit + 1;) {
 311                 bool const merge = !params.tracking_changes ||
 312                         pars[pit].lookupChange(pars[pit].size()) ==
 313                         Change::INSERTED;
 314                 pos_type const left  = ( pit == startpit ? startpos : 0 );
 315                 pos_type const right = ( pit == endpit ? endpos :
 316                                 pars[pit].size() + 1 );
 317                 // Logical erase only:
 318                 pars[pit].erase(left, right);
 319                 // Separate handling of para break:
 320                 if (merge && pit != endpit &&
 321                    (pit + 1 != endpit || pars[pit].hasSameLayout(pars[pit + 1]))) {
 322                         pos_type const thissize = pars[pit].size();
 323                         if (doclear)
 324                                 pars[pit + 1].stripLeadingSpaces();
 325                         mergeParagraph(params, pars, pit);
 326                         --endpit;
 327                         if (pit == endpit)
 328                                 endpos += thissize;
 329                 } else
 330                         ++pit;
 331         }
 332
 333         // Ensure legal cursor pos:
 334         endpit = startpit;
 335         endpos = startpos;
 336         return PitPosPair(endpit, endpos);
 337 }
 338
 339
 340 void copySelectionHelper(Buffer const & buf, ParagraphList & pars,
 341         pit_type startpit, pit_type endpit,
 342         int start, int end, textclass_type tc)
 343 {
 344         BOOST_ASSERT(0 <= start && start <= pars[startpit].size());
 345         BOOST_ASSERT(0 <= end && end <= pars[endpit].size());
 346         BOOST_ASSERT(startpit != endpit || start <= end);
 347
 348         // Clone the paragraphs within the selection.
 349         ParagraphList paragraphs(boost::next(pars.begin(), startpit),
 350                                  boost::next(pars.begin(), endpit + 1));
 351
 352         for_each(paragraphs.begin(), paragraphs.end(), resetParagraph(buf));
 353
 354         // Cut out the end of the last paragraph.
 355         Paragraph & back = paragraphs.back();
 356         back.erase(end, back.size());
 357
 358         // Cut out the begin of the first paragraph
 359         Paragraph & front = paragraphs.front();
 360         front.erase(0, start);
 361
 362         theCuts.push(make_pair(paragraphs, tc));
 363 }
 364
 365 } // namespace anon
 366
 367
 368
 369
 370 namespace lyx {
 371 namespace cap {
 372
 373 string grabAndEraseSelection(LCursor & cur)
 374 {
 375         if (!cur.selection())
 376                 return string();
 377         string 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                         string 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                          name, it->layout()->name(), tclass1.name(), 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                                 string const s = bformat(_(
 429                                         "Character style %1$s is "
 430                                         "undefined because of class "
 431                                         "conversion from\n%2$s to %3$s"),
 432                                          name, tclass1.name(), tclass2.name());
 433                                 // To warn the user that something had to be done.
 434                                 errorlist.push_back(ErrorItem(
 435                                                 _("Undefined character style"),
 436                                                 s, it.paragraph().id(),
 437                                                 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<string> const availableSelections(Buffer const & buffer)
 449 {
 450         vector<string> 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                 string 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, string::npos, "...");
 465                                 break;
 466                         }
 467                 }
 468
 469                 selList.push_back(asciiSel);
 470         }
 471
 472         return selList;
 473 }
 474
 475
 476 lyx::size_type numberOfSelections()
 477 {
 478         return theCuts.size();
 479 }
 480
 481
 482 void cutSelection(LCursor & cur, bool doclear, bool realcut)
 483 {
 484         // This doesn't make sense, if there is no selection
 485         if (!cur.selection())
 486                 return;
 487
 488         // OK, we have a selection. This is always between cur.selBegin()
 489         // and cur.selEnd()
 490
 491         if (cur.inTexted()) {
 492                 LyXText * text = cur.text();
 493                 BOOST_ASSERT(text);
 494                 // Stuff what we got on the clipboard. Even if there is no selection.
 495
 496                 // There is a problem with having the stuffing here in that the
 497                 // larger the selection the slower LyX will get. This can be
 498                 // solved by running the line below only when the selection has
 499                 // finished. The solution used currently just works, to make it
 500                 // faster we need to be more clever and probably also have more
 501                 // calls to cur.bv().owner()->gui().selection().put. (Lgb)
 502 //              cur.bv().owner()->gui().selection().put(cur.selectionAsString(true));
 503
 504
 505                 // make sure that the depth behind the selection are restored, too
 506                 recordUndoSelection(cur);
 507                 pit_type begpit = cur.selBegin().pit();
 508                 pit_type endpit = cur.selEnd().pit();
 509
 510                 int endpos = cur.selEnd().pos();
 511
 512                 BufferParams const & bp = cur.buffer().params();
 513                 if (realcut) {
 514                         copySelectionHelper(cur.buffer(),
 515                                 text->paragraphs(),
 516                                 begpit, endpit,
 517                                 cur.selBegin().pos(), endpos,
 518                                 bp.textclass);
 519                 }
 520
 521                 boost::tie(endpit, endpos) =
 522                         eraseSelectionHelper(bp,
 523                                 text->paragraphs(),
 524                                 begpit, endpit,
 525                                 cur.selBegin().pos(), endpos,
 526                                 doclear);
 527
 528                 // sometimes necessary
 529                 if (doclear)
 530                         text->paragraphs()[begpit].stripLeadingSpaces();
 531
 532                 // cutSelection can invalidate the cursor so we need to set
 533                 // it anew. (Lgb)
 534                 // we prefer the end for when tracking changes
 535                 cur.pos() = endpos;
 536                 cur.pit() = endpit;
 537
 538                 // need a valid cursor. (Lgb)
 539                 cur.clearSelection();
 540                 updateLabels(cur.buffer());
 541
 542                 // tell tabular that a recent copy happened
 543                 dirtyTabularStack(false);
 544         }
 545
 546         if (cur.inMathed()) {
 547                 if (cur.selBegin().idx() != cur.selEnd().idx()) {
 548                         // The current selection spans more than one cell.
 549                         // Record all cells
 550                         recordUndoInset(cur);
 551                 } else {
 552                         // Record only the current cell to avoid a jumping
 553                         // cursor after undo
 554                         recordUndo(cur);
 555                 }
 556                 if (realcut)
 557                         copySelection(cur);
 558                 eraseSelection(cur);
 559         }
 560 }
 561
 562
 563 void copySelection(LCursor & cur)
 564 {
 565         // stuff the selection onto the X clipboard, from an explicit copy request
 566         cur.bv().owner()->gui().clipboard().put(cur.selectionAsString(true));
 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                 pars.push_back(Paragraph());
 595                 BufferParams const & bp = cur.buffer().params();
 596                 pars.back().layout(bp.getLyXTextClass().defaultLayout());
 597                 for_each(pars.begin(), pars.end(), resetParagraph(cur.buffer()));
 598                 pars.back().insert(0, grabSelection(cur), LyXFont());
 599                 theCuts.push(make_pair(pars, bp.textclass));
 600         }
 601         // tell tabular that a recent copy happened
 602         dirtyTabularStack(false);
 603 }
 604
 605
 606 std::string 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                 : string();
 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                 recordUndo(cur);
 622
 623                 pit_type endpit;
 624                 PitPosPair ppp;
 625
 626                 boost::tie(ppp, endpit) =
 627                         pasteSelectionHelper(cur.buffer(),
 628                                              text->paragraphs(),
 629                                              cur.pit(), cur.pos(),
 630                                              parlist, textclass,
 631                                              errorList);
 632                 updateLabels(cur.buffer());
 633                 cur.clearSelection();
 634                 text->setCursor(cur, ppp.first, ppp.second);
 635         }
 636
 637         // mathed is handled in MathNestInset/MathGridInset
 638         BOOST_ASSERT(!cur.inMathed());
 639 }
 640
 641
 642 void pasteSelection(LCursor & cur, ErrorList & errorList, size_t sel_index)
 643 {
 644         // this does not make sense, if there is nothing to paste
 645         if (!checkPastePossible(sel_index))
 646                 return;
 647
 648         pasteParagraphList(cur, theCuts[sel_index].first,
 649                            theCuts[sel_index].second, errorList);
 650         cur.setSelection();
 651 }
 652
 653
 654 // simple replacing. The font of the first selected character is used
 655 void replaceSelectionWithString(LCursor & cur, string const & str, bool backwards)
 656 {
 657         recordUndo(cur);
 658         DocIterator selbeg = cur.selectionBegin();
 659
 660         // Get font setting before we cut
 661         LyXFont const font =
 662                 selbeg.paragraph().getFontSettings(cur.buffer().params(), selbeg.pos());
 663
 664         // Insert the new string
 665         pos_type pos = cur.selEnd().pos();
 666         Paragraph & par = cur.selEnd().paragraph();
 667         string::const_iterator cit = str.begin();
 668         string::const_iterator end = str.end();
 669         for (; cit != end; ++cit, ++pos)
 670                 par.insertChar(pos, (*cit), font);
 671
 672         // Cut the selection
 673         cutSelection(cur, true, false);
 674
 675         // select the replacement
 676         if (backwards) {
 677                 selbeg.pos() += str.length();
 678                 cur.setSelection(selbeg, -str.length());
 679         } else
 680                 cur.setSelection(selbeg, str.length());
 681 }
 682
 683
 684 void replaceSelection(LCursor & cur)
 685 {
 686         if (cur.selection())
 687                 cutSelection(cur, true, false);
 688 }
 689
 690
 691 void eraseSelection(LCursor & cur)
 692 {
 693         //lyxerr << "LCursor::eraseSelection begin: " << cur << endl;
 694         CursorSlice const & i1 = cur.selBegin();
 695         CursorSlice const & i2 = cur.selEnd();
 696         if (i1.inset().asMathInset()) {
 697                 cur.top() = i1;
 698                 if (i1.idx() == i2.idx()) {
 699                         i1.cell().erase(i1.pos(), i2.pos());
 700                         // We may have deleted i1.cell(cur.pos()).
 701                         // Make sure that pos is valid.
 702                         if (cur.pos() > cur.lastpos())
 703                                 cur.pos() = cur.lastpos();
 704                 } else {
 705                         MathInset * p = i1.asMathInset();
 706                         InsetBase::row_type r1, r2;
 707                         InsetBase::col_type c1, c2;
 708                         region(i1, i2, r1, r2, c1, c2);
 709                         for (InsetBase::row_type row = r1; row <= r2; ++row)
 710                                 for (InsetBase::col_type col = c1; col <= c2; ++col)
 711                                         p->cell(p->index(row, col)).clear();
 712                         // We've deleted the whole cell. Only pos 0 is valid.
 713                         cur.pos() = 0;
 714                 }
 715                 // need a valid cursor. (Lgb)
 716                 cur.clearSelection();
 717         } else {
 718                 lyxerr << "can't erase this selection 1" << endl;
 719         }
 720         //lyxerr << "LCursor::eraseSelection end: " << cur << endl;
 721 }
 722
 723
 724 void selDel(LCursor & cur)
 725 {
 726         //lyxerr << "LCursor::selDel" << endl;
 727         if (cur.selection())
 728                 eraseSelection(cur);
 729 }
 730
 731
 732 void selClearOrDel(LCursor & cur)
 733 {
 734         //lyxerr << "LCursor::selClearOrDel" << endl;
 735         if (lyxrc.auto_region_delete)
 736                 selDel(cur);
 737         else
 738                 cur.selection() = false;
 739 }
 740
 741
 742 string grabSelection(LCursor const & cur)
 743 {
 744         if (!cur.selection())
 745                 return string();
 746
 747         // FIXME: What is wrong with the following?
 748 #if 0
 749         std::ostringstream os;
 750         for (DocIterator dit = cur.selectionBegin();
 751              dit != cur.selectionEnd(); dit.forwardPos())
 752                 os << asString(dit.cell());
 753         return os.str();
 754 #endif
 755
 756         CursorSlice i1 = cur.selBegin();
 757         CursorSlice i2 = cur.selEnd();
 758
 759         if (i1.idx() == i2.idx()) {
 760                 if (i1.inset().asMathInset()) {
 761                         MathArray::const_iterator it = i1.cell().begin();
 762                         return asString(MathArray(it + i1.pos(), it + i2.pos()));
 763                 } else {
 764                         return "unknown selection 1";
 765                 }
 766         }
 767
 768         InsetBase::row_type r1, r2;
 769         InsetBase::col_type c1, c2;
 770         region(i1, i2, r1, r2, c1, c2);
 771
 772         string data;
 773         if (i1.inset().asMathInset()) {
 774                 for (InsetBase::row_type row = r1; row <= r2; ++row) {
 775                         if (row > r1)
 776                                 data += "\\\\";
 777                         for (InsetBase::col_type col = c1; col <= c2; ++col) {
 778                                 if (col > c1)
 779                                         data += '&';
 780                                 data += asString(i1.asMathInset()->
 781                                         cell(i1.asMathInset()->index(row, col)));
 782                         }
 783                 }
 784         } else {
 785                 data = "unknown selection 2";
 786         }
 787         return data;
 788 }
 789
 790
 791 void dirtyTabularStack(bool b)
 792 {
 793         dirty_tabular_stack_ = b;
 794 }
 795
 796
 797 bool tabularStackDirty()
 798 {
 799         return dirty_tabular_stack_;
 800 }
 801
 802
 803 } // namespace cap
 804 } // namespace lyx