src/CutAndPaste.cpp

   1 /**
   2  * \file CutAndPaste.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Jürgen Vigna
   7  * \author Lars Gullik Bjønnes
   8  * \author Alfredo Braunstein
   9  * \author Michael Gerz
  10  *
  11  * Full author contact details are available in file CREDITS.
  12  */
  13
  14 #include <config.h>
  15
  16 #include "CutAndPaste.h"
  17
  18 #include "BranchList.h"
  19 #include "Buffer.h"
  20 #include "buffer_funcs.h"
  21 #include "BufferList.h"
  22 #include "BufferParams.h"
  23 #include "BufferView.h"
  24 #include "Changes.h"
  25 #include "Cursor.h"
  26 #include "Encoding.h"
  27 #include "ErrorList.h"
  28 #include "FuncCode.h"
  29 #include "FuncRequest.h"
  30 #include "InsetIterator.h"
  31 #include "InsetList.h"
  32 #include "Language.h"
  33 #include "LyX.h"
  34 #include "LyXRC.h"
  35 #include "Text.h"
  36 #include "Paragraph.h"
  37 #include "ParagraphParameters.h"
  38 #include "ParIterator.h"
  39 #include "TextClass.h"
  40
  41 #include "insets/InsetBibitem.h"
  42 #include "insets/InsetBranch.h"
  43 #include "insets/InsetCommand.h"
  44 #include "insets/InsetFlex.h"
  45 #include "insets/InsetGraphics.h"
  46 #include "insets/InsetGraphicsParams.h"
  47 #include "insets/InsetInclude.h"
  48 #include "insets/InsetLabel.h"
  49 #include "insets/InsetTabular.h"
  50
  51 #include "mathed/MathData.h"
  52 #include "mathed/InsetMath.h"
  53 #include "mathed/InsetMathHull.h"
  54 #include "mathed/InsetMathRef.h"
  55 #include "mathed/MathSupport.h"
  56
  57 #include "support/debug.h"
  58 #include "support/docstream.h"
  59 #include "support/gettext.h"
  60 #include "support/lassert.h"
  61 #include "support/limited_stack.h"
  62 #include "support/lstrings.h"
  63
  64 #include "frontends/alert.h"
  65 #include "frontends/Clipboard.h"
  66 #include "frontends/Selection.h"
  67
  68 #include <boost/tuple/tuple.hpp>
  69 #include <boost/next_prior.hpp>
  70
  71 #include <string>
  72
  73 using namespace std;
  74 using namespace lyx::support;
  75 using lyx::frontend::Clipboard;
  76
  77 namespace lyx {
  78
  79 namespace {
  80
  81 typedef pair<pit_type, int> PitPosPair;
  82
  83 typedef limited_stack<pair<ParagraphList, DocumentClassConstPtr> > CutStack;
  84
  85 CutStack theCuts(10);
  86 // persistent selection, cleared until the next selection
  87 CutStack selectionBuffer(1);
  88
  89 // store whether the tabular stack is newer than the normal copy stack
  90 // FIXME: this is a workaround for bug 1919. Should be removed for 1.5,
  91 // when we (hopefully) have a one-for-all paste mechanism.
  92 bool dirty_tabular_stack_ = false;
  93
  94
  95 bool checkPastePossible(int index)
  96 {
  97         return size_t(index) < theCuts.size() && !theCuts[index].first.empty();
  98 }
  99
 100
 101 struct PasteReturnValue {
 102         PasteReturnValue(pit_type r_par, pos_type r_pos, bool r_nu) :
 103           par(r_par), pos(r_pos), needupdate(r_nu)
 104         {}
 105
 106         pit_type par;
 107         pos_type pos;
 108         bool needupdate;
 109 };
 110
 111 PasteReturnValue
 112 pasteSelectionHelper(DocIterator const & cur, ParagraphList const & parlist,
 113                      DocumentClassConstPtr oldDocClass, ErrorList & errorlist)
 114 {
 115         Buffer const & buffer = *cur.buffer();
 116         pit_type pit = cur.pit();
 117         pos_type pos = cur.pos();
 118         bool need_update = false;
 119         InsetText * target_inset = cur.inset().asInsetText();
 120         if (!target_inset) {
 121                 InsetTabular * it = cur.inset().asInsetTabular();
 122                 target_inset = it? it->cell(cur.idx())->asInsetText() : 0;
 123         }
 124         LASSERT(target_inset, return PasteReturnValue(pit, pos, need_update));
 125         ParagraphList & pars = target_inset->paragraphs();
 126
 127         if (parlist.empty())
 128                 return PasteReturnValue(pit, pos, need_update);
 129
 130         BOOST_ASSERT (pos <= pars[pit].size());
 131
 132         // Make a copy of the CaP paragraphs.
 133         ParagraphList insertion = parlist;
 134         DocumentClassConstPtr newDocClass = buffer.params().documentClassPtr();
 135
 136         // Now remove all out of the pars which is NOT allowed in the
 137         // new environment and set also another font if that is required.
 138
 139         // Convert newline to paragraph break in ParbreakIsNewline
 140         if (target_inset->getLayout().parbreakIsNewline()
 141             || pars[pit].layout().parbreak_is_newline) {
 142                 for (size_t i = 0; i != insertion.size(); ++i) {
 143                         for (pos_type j = 0; j != insertion[i].size(); ++j) {
 144                                 if (insertion[i].isNewline(j)) {
 145                                         // do not track deletion of newline
 146                                         insertion[i].eraseChar(j, false);
 147                                         insertion[i].setInsetOwner(target_inset);
 148                                         breakParagraphConservative(
 149                                                         buffer.params(),
 150                                                         insertion, i, j);
 151                                         break;
 152                                 }
 153                         }
 154                 }
 155         }
 156
 157         // set the paragraphs to plain layout if necessary
 158         if (cur.inset().usePlainLayout()) {
 159                 bool forcePlainLayout = cur.inset().forcePlainLayout();
 160                 Layout const & plainLayout = newDocClass->plainLayout();
 161                 Layout const & defaultLayout = newDocClass->defaultLayout();
 162                 ParagraphList::iterator const end = insertion.end();
 163                 ParagraphList::iterator par = insertion.begin();
 164                 for (; par != end; ++par) {
 165                         Layout const & parLayout = par->layout();
 166                         if (forcePlainLayout || parLayout == defaultLayout)
 167                                 par->setLayout(plainLayout);
 168                 }
 169         } else { // check if we need to reset from plain layout
 170                 Layout const & defaultLayout = newDocClass->defaultLayout();
 171                 Layout const & plainLayout = newDocClass->plainLayout();
 172                 ParagraphList::iterator const end = insertion.end();
 173                 ParagraphList::iterator par = insertion.begin();
 174                 for (; par != end; ++par) {
 175                         Layout const & parLayout = par->layout();
 176                         if (parLayout == plainLayout)
 177                                 par->setLayout(defaultLayout);
 178                 }
 179         }
 180
 181         InsetText in(cur.buffer());
 182         // Make sure there is no class difference.
 183         in.paragraphs().clear();
 184         // This works without copying any paragraph data because we have
 185         // a specialized swap method for ParagraphList. This is important
 186         // since we store pointers to insets at some places and we don't
 187         // want to invalidate them.
 188         insertion.swap(in.paragraphs());
 189         cap::switchBetweenClasses(oldDocClass, newDocClass, in, errorlist);
 190         insertion.swap(in.paragraphs());
 191
 192         ParagraphList::iterator tmpbuf = insertion.begin();
 193         int depth_delta = pars[pit].params().depth() - tmpbuf->params().depth();
 194
 195         depth_type max_depth = pars[pit].getMaxDepthAfter();
 196
 197         for (; tmpbuf != insertion.end(); ++tmpbuf) {
 198                 // If we have a negative jump so that the depth would
 199                 // go below 0 depth then we have to redo the delta to
 200                 // this new max depth level so that subsequent
 201                 // paragraphs are aligned correctly to this paragraph
 202                 // at level 0.
 203                 if (int(tmpbuf->params().depth()) + depth_delta < 0)
 204                         depth_delta = 0;
 205
 206                 // Set the right depth so that we are not too deep or shallow.
 207                 tmpbuf->params().depth(tmpbuf->params().depth() + depth_delta);
 208                 if (tmpbuf->params().depth() > max_depth)
 209                         tmpbuf->params().depth(max_depth);
 210
 211                 // Only set this from the 2nd on as the 2nd depends
 212                 // for maxDepth still on pit.
 213                 if (tmpbuf != insertion.begin())
 214                         max_depth = tmpbuf->getMaxDepthAfter();
 215
 216                 // Set the inset owner of this paragraph.
 217                 tmpbuf->setInsetOwner(target_inset);
 218                 for (pos_type i = 0; i < tmpbuf->size(); ++i) {
 219                         // do not track deletion of invalid insets
 220                         if (Inset * inset = tmpbuf->getInset(i))
 221                                 if (!target_inset->insetAllowed(inset->lyxCode()))
 222                                         tmpbuf->eraseChar(i--, false);
 223                 }
 224
 225                 tmpbuf->setChange(Change(buffer.params().trackChanges ?
 226                                          Change::INSERTED : Change::UNCHANGED));
 227         }
 228
 229         bool const empty = pars[pit].empty();
 230         if (!empty) {
 231                 // Make the buf exactly the same layout as the cursor
 232                 // paragraph.
 233                 insertion.begin()->makeSameLayout(pars[pit]);
 234         }
 235
 236         // Prepare the paragraphs and insets for insertion.
 237         insertion.swap(in.paragraphs());
 238
 239         InsetIterator const i_end = inset_iterator_end(in);
 240         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 241                 // Even though this will also be done later, it has to be done here
 242                 // since some inset might going to try to access
 243                 // the buffer() member.
 244                 it->setBuffer(const_cast<Buffer &>(buffer));
 245                 switch (it->lyxCode()) {
 246
 247                 case MATH_HULL_CODE: {
 248                         // check for equation labels and resolve duplicates
 249                         InsetMathHull * ins = it->asInsetMath()->asHullInset();
 250                         std::vector<InsetLabel *> labels = ins->getLabels();
 251                         for (size_t i = 0; i != labels.size(); ++i) {
 252                                 if (!labels[i])
 253                                         continue;
 254                                 InsetLabel * lab = labels[i];
 255                                 docstring const oldname = lab->getParam("name");
 256                                 lab->updateLabel(oldname);
 257                                 // We need to update the buffer reference cache.
 258                                 need_update = true;
 259                                 docstring const newname = lab->getParam("name");
 260                                 if (oldname == newname)
 261                                         continue;
 262                                 // adapt the references
 263                                 for (InsetIterator itt = inset_iterator_begin(in);
 264                                       itt != i_end; ++itt) {
 265                                         if (itt->lyxCode() == REF_CODE) {
 266                                                 InsetCommand * ref = itt->asInsetCommand();
 267                                                 if (ref->getParam("reference") == oldname)
 268                                                         ref->setParam("reference", newname);
 269                                         } else if (itt->lyxCode() == MATH_REF_CODE) {
 270                                                 InsetMathRef * mi = itt->asInsetMath()->asRefInset();
 271                                                 // this is necessary to prevent an uninitialized
 272                                                 // buffer when the RefInset is in a MathBox.
 273                                                 // FIXME audit setBuffer calls
 274                                                 mi->setBuffer(const_cast<Buffer &>(buffer));
 275                                                 if (mi->getTarget() == oldname)
 276                                                         mi->changeTarget(newname);
 277                                         }
 278                                 }
 279                         }
 280                         break;
 281                 }
 282
 283                 case LABEL_CODE: {
 284                         // check for duplicates
 285                         InsetLabel & lab = static_cast<InsetLabel &>(*it);
 286                         docstring const oldname = lab.getParam("name");
 287                         lab.updateLabel(oldname);
 288                         // We need to update the buffer reference cache.
 289                         need_update = true;
 290                         docstring const newname = lab.getParam("name");
 291                         if (oldname == newname)
 292                                 break;
 293                         // adapt the references
 294                         for (InsetIterator itt = inset_iterator_begin(in); itt != i_end; ++itt) {
 295                                 if (itt->lyxCode() == REF_CODE) {
 296                                         InsetCommand & ref = static_cast<InsetCommand &>(*itt);
 297                                         if (ref.getParam("reference") == oldname)
 298                                                 ref.setParam("reference", newname);
 299                                 } else if (itt->lyxCode() == MATH_REF_CODE) {
 300                                         InsetMathRef * mi = itt->asInsetMath()->asRefInset();
 301                                         // this is necessary to prevent an uninitialized
 302                                         // buffer when the RefInset is in a MathBox.
 303                                         // FIXME audit setBuffer calls
 304                                         mi->setBuffer(const_cast<Buffer &>(buffer));
 305                                         if (mi->getTarget() == oldname)
 306                                                 mi->changeTarget(newname);
 307                                 }
 308                         }
 309                         break;
 310                 }
 311
 312                 case INCLUDE_CODE: {
 313                         InsetInclude & inc = static_cast<InsetInclude &>(*it);
 314                         inc.updateCommand();
 315                         // We need to update the list of included files.
 316                         need_update = true;
 317                         break;
 318                 }
 319
 320                 case BIBITEM_CODE: {
 321                         // check for duplicates
 322                         InsetBibitem & bib = static_cast<InsetBibitem &>(*it);
 323                         docstring const oldkey = bib.getParam("key");
 324                         bib.updateCommand(oldkey, false);
 325                         // We need to update the buffer reference cache.
 326                         need_update = true;
 327                         docstring const newkey = bib.getParam("key");
 328                         if (oldkey == newkey)
 329                                 break;
 330                         // adapt the references
 331                         for (InsetIterator itt = inset_iterator_begin(in);
 332                              itt != i_end; ++itt) {
 333                                 if (itt->lyxCode() == CITE_CODE) {
 334                                         InsetCommand * ref = itt->asInsetCommand();
 335                                         if (ref->getParam("key") == oldkey)
 336                                                 ref->setParam("key", newkey);
 337                                 }
 338                         }
 339                         break;
 340                 }
 341
 342                 case BRANCH_CODE: {
 343                         // check if branch is known to target buffer
 344                         // or its master
 345                         InsetBranch & br = static_cast<InsetBranch &>(*it);
 346                         docstring const name = br.branch();
 347                         if (name.empty())
 348                                 break;
 349                         bool const is_child = (&buffer != buffer.masterBuffer());
 350                         BranchList branchlist = buffer.params().branchlist();
 351                         if ((!is_child && branchlist.find(name))
 352                             || (is_child && (branchlist.find(name)
 353                                 || buffer.masterBuffer()->params().branchlist().find(name))))
 354                                 break;
 355                         // FIXME: add an option to add the branch to the master's BranchList.
 356                         docstring text = bformat(
 357                                         _("The pasted branch \"%1$s\" is undefined.\n"
 358                                           "Do you want to add it to the document's branch list?"),
 359                                         name);
 360                         if (frontend::Alert::prompt(_("Unknown branch"),
 361                                           text, 0, 1, _("&Add"), _("&Don't Add")) != 0)
 362                                 break;
 363                         lyx::dispatch(FuncRequest(LFUN_BRANCH_ADD, name));
 364                         // We need to update the list of branches.
 365                         need_update = true;
 366                         break;
 367                 }
 368
 369                 default:
 370                         break; // nothing
 371                 }
 372         }
 373         insertion.swap(in.paragraphs());
 374
 375         // Split the paragraph for inserting the buf if necessary.
 376         if (!empty)
 377                 breakParagraphConservative(buffer.params(), pars, pit, pos);
 378
 379         // Paste it!
 380         if (empty) {
 381                 pars.insert(boost::next(pars.begin(), pit),
 382                             insertion.begin(),
 383                             insertion.end());
 384
 385                 // merge the empty par with the last par of the insertion
 386                 mergeParagraph(buffer.params(), pars,
 387                                pit + insertion.size() - 1);
 388         } else {
 389                 pars.insert(boost::next(pars.begin(), pit + 1),
 390                             insertion.begin(),
 391                             insertion.end());
 392
 393                 // merge the first par of the insertion with the current par
 394                 mergeParagraph(buffer.params(), pars, pit);
 395         }
 396
 397         // Store the new cursor position.
 398         pit_type last_paste = pit + insertion.size() - 1;
 399         pit_type startpit = pit;
 400         pit = last_paste;
 401         pos = pars[last_paste].size();
 402
 403         // FIXME Should we do it here, or should we let updateBuffer() do it?
 404         // Set paragraph buffers. It's important to do this right away
 405         // before something calls Inset::buffer() and causes a crash.
 406         for (pit_type p = startpit; p <= pit; ++p)
 407                 pars[p].setBuffer(const_cast<Buffer &>(buffer));
 408
 409         // Join (conditionally) last pasted paragraph with next one, i.e.,
 410         // the tail of the spliced document paragraph
 411         if (!empty && last_paste + 1 != pit_type(pars.size())) {
 412                 if (pars[last_paste + 1].hasSameLayout(pars[last_paste])) {
 413                         mergeParagraph(buffer.params(), pars, last_paste);
 414                 } else if (pars[last_paste + 1].empty()) {
 415                         pars[last_paste + 1].makeSameLayout(pars[last_paste]);
 416                         mergeParagraph(buffer.params(), pars, last_paste);
 417                 } else if (pars[last_paste].empty()) {
 418                         pars[last_paste].makeSameLayout(pars[last_paste + 1]);
 419                         mergeParagraph(buffer.params(), pars, last_paste);
 420                 } else {
 421                         pars[last_paste + 1].stripLeadingSpaces(buffer.params().trackChanges);
 422                         ++last_paste;
 423                 }
 424         }
 425
 426         return PasteReturnValue(pit, pos, need_update);
 427 }
 428
 429
 430 PitPosPair eraseSelectionHelper(BufferParams const & params,
 431         ParagraphList & pars,
 432         pit_type startpit, pit_type endpit,
 433         int startpos, int endpos)
 434 {
 435         // Start of selection is really invalid.
 436         if (startpit == pit_type(pars.size()) ||
 437             (startpos > pars[startpit].size()))
 438                 return PitPosPair(endpit, endpos);
 439
 440         // Start and end is inside same paragraph
 441         if (endpit == pit_type(pars.size()) || startpit == endpit) {
 442                 endpos -= pars[startpit].eraseChars(startpos, endpos, params.trackChanges);
 443                 return PitPosPair(endpit, endpos);
 444         }
 445
 446         for (pit_type pit = startpit; pit != endpit + 1;) {
 447                 pos_type const left  = (pit == startpit ? startpos : 0);
 448                 pos_type right = (pit == endpit ? endpos : pars[pit].size() + 1);
 449                 bool const merge = pars[pit].isMergedOnEndOfParDeletion(params.trackChanges);
 450
 451                 // Logically erase only, including the end-of-paragraph character
 452                 pars[pit].eraseChars(left, right, params.trackChanges);
 453
 454                 // Separate handling of paragraph break:
 455                 if (merge && pit != endpit &&
 456                     (pit + 1 != endpit
 457                      || pars[pit].hasSameLayout(pars[endpit])
 458                      || pars[endpit].size() == endpos)) {
 459                         if (pit + 1 == endpit)
 460                                 endpos += pars[pit].size();
 461                         mergeParagraph(params, pars, pit);
 462                         --endpit;
 463                 } else
 464                         ++pit;
 465         }
 466
 467         // Ensure legal cursor pos:
 468         endpit = startpit;
 469         endpos = startpos;
 470         return PitPosPair(endpit, endpos);
 471 }
 472
 473
 474 void putClipboard(ParagraphList const & paragraphs,
 475         DocumentClassConstPtr docclass, docstring const & plaintext)
 476 {
 477         // This used to need to be static to avoid a memory leak. It no longer needs
 478         // to be so, but the alternative is to construct a new one of these (with a
 479         // new temporary directory, etc) every time, and then to destroy it. So maybe
 480         // it's worth just keeping this one around.
 481         Buffer * staticbuffer = theBufferList().newInternalBuffer(
 482                 FileName::tempName("clipboard.internal").absFileName());
 483
 484         // These two things only really need doing the first time.
 485         staticbuffer->setUnnamed(true);
 486         staticbuffer->inset().setBuffer(*staticbuffer);
 487
 488         // Use a clone for the complicated stuff so that we do not need to clean
 489         // up in order to avoid a crash.
 490         Buffer * buffer = staticbuffer->cloneBufferOnly();
 491         LASSERT(buffer, return);
 492
 493         // This needs doing every time.
 494         buffer->params().setDocumentClass(docclass);
 495
 496         // we will use pasteSelectionHelper to copy the paragraphs into the
 497         // temporary Buffer, since it does a lot of things to fix them up.
 498         DocIterator dit = doc_iterator_begin(buffer, &buffer->inset());
 499         ErrorList el;
 500         pasteSelectionHelper(dit, paragraphs, docclass, el);
 501
 502         // We don't want to produce images that are not used. Therefore,
 503         // output formulas as MathML. Even if this is not understood by all
 504         // applications, the number that can parse it should go up in the future.
 505         buffer->params().html_math_output = BufferParams::MathML;
 506
 507         // The Buffer is being used to export. This is necessary so that the
 508         // updateMacros call will record the needed information.
 509         MarkAsExporting mex(buffer);
 510
 511         buffer->updateBuffer(Buffer::UpdateMaster, OutputUpdate);
 512         buffer->updateMacros();
 513         buffer->updateMacroInstances(OutputUpdate);
 514
 515         // LyX's own format
 516         string lyx;
 517         ostringstream oslyx;
 518         if (buffer->write(oslyx))
 519                 lyx = oslyx.str();
 520
 521         // XHTML format
 522         odocstringstream oshtml;
 523         OutputParams runparams(encodings.fromLyXName("utf8"));
 524         buffer->writeLyXHTMLSource(oshtml, runparams, Buffer::FullSource);
 525
 526         theClipboard().put(lyx, oshtml.str(), plaintext);
 527
 528         // Save that memory
 529         delete buffer;
 530 }
 531
 532
 533 /// return true if the whole ParagraphList is deleted
 534 static bool isFullyDeleted(ParagraphList const & pars)
 535 {
 536         pit_type const pars_size = static_cast<pit_type>(pars.size());
 537
 538         // check all paragraphs
 539         for (pit_type pit = 0; pit < pars_size; ++pit) {
 540                 if (!pars[pit].empty())   // prevent assertion failure
 541                         if (!pars[pit].isDeleted(0, pars[pit].size()))
 542                                 return false;
 543         }
 544         return true;
 545 }
 546
 547
 548 void copySelectionHelper(Buffer const & buf, Text const & text,
 549         pit_type startpit, pit_type endpit,
 550         int start, int end, DocumentClassConstPtr dc, CutStack & cutstack)
 551 {
 552         ParagraphList const & pars = text.paragraphs();
 553
 554         LASSERT(0 <= start && start <= pars[startpit].size(), /**/);
 555         LASSERT(0 <= end && end <= pars[endpit].size(), /**/);
 556         LASSERT(startpit != endpit || start <= end, /**/);
 557
 558         // Clone the paragraphs within the selection.
 559         ParagraphList copy_pars(boost::next(pars.begin(), startpit),
 560                                 boost::next(pars.begin(), endpit + 1));
 561
 562         // Remove the end of the last paragraph; afterwards, remove the
 563         // beginning of the first paragraph. Keep this order - there may only
 564         // be one paragraph!  Do not track deletions here; this is an internal
 565         // action not visible to the user
 566
 567         Paragraph & back = copy_pars.back();
 568         back.eraseChars(end, back.size(), false);
 569         Paragraph & front = copy_pars.front();
 570         front.eraseChars(0, start, false);
 571
 572         ParagraphList::iterator it = copy_pars.begin();
 573         ParagraphList::iterator it_end = copy_pars.end();
 574
 575         for (; it != it_end; ++it) {
 576                 // Since we have a copy of the paragraphs, the insets
 577                 // do not have a proper buffer reference. It makes
 578                 // sense to add them temporarily, because the
 579                 // operations below depend on that (acceptChanges included).
 580                 it->setBuffer(const_cast<Buffer &>(buf));
 581                 // PassThru paragraphs have the Language
 582                 // latex_language. This is invalid for others, so we
 583                 // need to change it to the buffer language.
 584                 if (it->isPassThru())
 585                         it->changeLanguage(buf.params(),
 586                                            latex_language, buf.language());
 587         }
 588
 589         // do not copy text (also nested in insets) which is marked as
 590         // deleted, unless the whole selection was deleted
 591         if (!isFullyDeleted(copy_pars))
 592                 acceptChanges(copy_pars, buf.params());
 593         else
 594                 rejectChanges(copy_pars, buf.params());
 595
 596
 597         // do some final cleanup now, to make sure that the paragraphs
 598         // are not linked to something else.
 599         it = copy_pars.begin();
 600         for (; it != it_end; ++it) {
 601                 it->setBuffer(*static_cast<Buffer *>(0));
 602                 it->setInsetOwner(0);
 603         }
 604
 605         cutstack.push(make_pair(copy_pars, dc));
 606 }
 607
 608 } // namespace anon
 609
 610
 611
 612
 613 namespace cap {
 614
 615 void region(CursorSlice const & i1, CursorSlice const & i2,
 616             Inset::row_type & r1, Inset::row_type & r2,
 617             Inset::col_type & c1, Inset::col_type & c2)
 618 {
 619         Inset & p = i1.inset();
 620         c1 = p.col(i1.idx());
 621         c2 = p.col(i2.idx());
 622         if (c1 > c2)
 623                 swap(c1, c2);
 624         r1 = p.row(i1.idx());
 625         r2 = p.row(i2.idx());
 626         if (r1 > r2)
 627                 swap(r1, r2);
 628 }
 629
 630
 631 docstring grabAndEraseSelection(Cursor & cur)
 632 {
 633         if (!cur.selection())
 634                 return docstring();
 635         docstring res = grabSelection(cur);
 636         eraseSelection(cur);
 637         return res;
 638 }
 639
 640
 641 bool reduceSelectionToOneCell(Cursor & cur)
 642 {
 643         if (!cur.selection() || !cur.inMathed())
 644                 return false;
 645
 646         CursorSlice i1 = cur.selBegin();
 647         CursorSlice i2 = cur.selEnd();
 648         if (!i1.inset().asInsetMath())
 649                 return false;
 650
 651         // the easy case: do nothing if only one cell is selected
 652         if (i1.idx() == i2.idx())
 653                 return true;
 654
 655         cur.top().pos() = 0;
 656         cur.resetAnchor();
 657         cur.top().pos() = cur.top().lastpos();
 658
 659         return true;
 660 }
 661
 662
 663 bool multipleCellsSelected(Cursor const & cur)
 664 {
 665         if (!cur.selection() || !cur.inMathed())
 666                 return false;
 667
 668         CursorSlice i1 = cur.selBegin();
 669         CursorSlice i2 = cur.selEnd();
 670         if (!i1.inset().asInsetMath())
 671                 return false;
 672
 673         if (i1.idx() == i2.idx())
 674                 return false;
 675
 676         return true;
 677 }
 678
 679
 680 void switchBetweenClasses(DocumentClassConstPtr oldone,
 681                 DocumentClassConstPtr newone, InsetText & in, ErrorList & errorlist)
 682 {
 683         errorlist.clear();
 684
 685         LASSERT(!in.paragraphs().empty(), /**/);
 686         if (oldone == newone)
 687                 return;
 688
 689         DocumentClass const & oldtc = *oldone;
 690         DocumentClass const & newtc = *newone;
 691
 692         // layouts
 693         ParIterator it = par_iterator_begin(in);
 694         ParIterator end = par_iterator_end(in);
 695         // for remembering which layouts we've had to add
 696         set<docstring> newlayouts;
 697         for (; it != end; ++it) {
 698                 docstring const name = it->layout().name();
 699
 700                 // the pasted text will keep their own layout name. If this layout does
 701                 // not exist in the new document, it will behave like a standard layout.
 702                 bool const added_one = newtc.addLayoutIfNeeded(name);
 703                 if (added_one)
 704                         newlayouts.insert(name);
 705
 706                 if (added_one || newlayouts.find(name) != newlayouts.end()) {
 707                         // Warn the user.
 708                         docstring const s = bformat(_("Layout `%1$s' was not found."), name);
 709                         errorlist.push_back(
 710                                 ErrorItem(_("Layout Not Found"), s, it->id(), 0, it->size()));
 711                 }
 712
 713                 if (in.usePlainLayout())
 714                         it->setLayout(newtc.plainLayout());
 715                 else
 716                         it->setLayout(newtc[name]);
 717         }
 718
 719         // character styles
 720         InsetIterator const i_end = inset_iterator_end(in);
 721         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 722                 if (it->lyxCode() != FLEX_CODE)
 723                         // FIXME: Should we verify all InsetCollapsable?
 724                         continue;
 725
 726                 docstring const layoutName = it->layoutName();
 727                 docstring const & n = newone->insetLayout(layoutName).name();
 728                 bool const is_undefined = n.empty() ||
 729                         n == DocumentClass::plainInsetLayout().name();
 730                 if (!is_undefined)
 731                         continue;
 732
 733                 // The flex inset is undefined in newtc
 734                 docstring const oldname = from_utf8(oldtc.name());
 735                 docstring const newname = from_utf8(newtc.name());
 736                 docstring s;
 737                 if (oldname == newname)
 738                         s = bformat(_("Flex inset %1$s is undefined after "
 739                                 "reloading `%2$s' layout."), layoutName, oldname);
 740                 else
 741                         s = bformat(_("Flex inset %1$s is undefined because of "
 742                                 "conversion from `%2$s' layout to `%3$s'."),
 743                                 layoutName, oldname, newname);
 744                 // To warn the user that something had to be done.
 745                 errorlist.push_back(ErrorItem(
 746                                 _("Undefined flex inset"),
 747                                 s, it.paragraph().id(), it.pos(), it.pos() + 1));
 748         }
 749 }
 750
 751
 752 vector<docstring> availableSelections(Buffer const * buf)
 753 {
 754         vector<docstring> selList;
 755         if (!buf)
 756                 return selList;
 757
 758         CutStack::const_iterator cit = theCuts.begin();
 759         CutStack::const_iterator end = theCuts.end();
 760         for (; cit != end; ++cit) {
 761                 // we do not use cit-> here because gcc 2.9x does not
 762                 // like it (JMarc)
 763                 ParagraphList const & pars = (*cit).first;
 764                 docstring asciiSel;
 765                 ParagraphList::const_iterator pit = pars.begin();
 766                 ParagraphList::const_iterator pend = pars.end();
 767                 for (; pit != pend; ++pit) {
 768                         Paragraph par(*pit, 0, 26);
 769                         // adapt paragraph to current buffer.
 770                         par.setBuffer(const_cast<Buffer &>(*buf));
 771                         asciiSel += par.asString(AS_STR_INSETS);
 772                         if (asciiSel.size() > 25) {
 773                                 asciiSel.replace(22, docstring::npos,
 774                                                  from_ascii("..."));
 775                                 break;
 776                         }
 777                 }
 778
 779                 selList.push_back(asciiSel);
 780         }
 781
 782         return selList;
 783 }
 784
 785
 786 size_type numberOfSelections()
 787 {
 788         return theCuts.size();
 789 }
 790
 791
 792 void cutSelection(Cursor & cur, bool doclear, bool realcut)
 793 {
 794         // This doesn't make sense, if there is no selection
 795         if (!cur.selection())
 796                 return;
 797
 798         // OK, we have a selection. This is always between cur.selBegin()
 799         // and cur.selEnd()
 800
 801         if (cur.inTexted()) {
 802                 Text * text = cur.text();
 803                 LASSERT(text, /**/);
 804
 805                 saveSelection(cur);
 806
 807                 // make sure that the depth behind the selection are restored, too
 808                 cur.recordUndoSelection();
 809                 pit_type begpit = cur.selBegin().pit();
 810                 pit_type endpit = cur.selEnd().pit();
 811
 812                 int endpos = cur.selEnd().pos();
 813
 814                 BufferParams const & bp = cur.buffer()->params();
 815                 if (realcut) {
 816                         copySelectionHelper(*cur.buffer(),
 817                                 *text,
 818                                 begpit, endpit,
 819                                 cur.selBegin().pos(), endpos,
 820                                 bp.documentClassPtr(), theCuts);
 821                         // Stuff what we got on the clipboard.
 822                         // Even if there is no selection.
 823                         putClipboard(theCuts[0].first, theCuts[0].second,
 824                                 cur.selectionAsString(true));
 825                 }
 826
 827                 if (begpit != endpit)
 828                         cur.screenUpdateFlags(Update::Force | Update::FitCursor);
 829
 830                 boost::tie(endpit, endpos) =
 831                         eraseSelectionHelper(bp,
 832                                 text->paragraphs(),
 833                                 begpit, endpit,
 834                                 cur.selBegin().pos(), endpos);
 835
 836                 // cutSelection can invalidate the cursor so we need to set
 837                 // it anew. (Lgb)
 838                 // we prefer the end for when tracking changes
 839                 cur.pos() = endpos;
 840                 cur.pit() = endpit;
 841
 842                 // sometimes necessary
 843                 if (doclear
 844                         && text->paragraphs()[begpit].stripLeadingSpaces(bp.trackChanges))
 845                         cur.fixIfBroken();
 846
 847                 // need a valid cursor. (Lgb)
 848                 cur.clearSelection();
 849
 850                 // After a cut operation, we must make sure that the Buffer is updated
 851                 // because some further operation might need updated label information for
 852                 // example. So we cannot just use "cur.forceBufferUpdate()" here.
 853                 // This fixes #7071.
 854                 cur.buffer()->updateBuffer();
 855
 856                 // tell tabular that a recent copy happened
 857                 dirtyTabularStack(false);
 858         }
 859
 860         if (cur.inMathed()) {
 861                 if (cur.selBegin().idx() != cur.selEnd().idx()) {
 862                         // The current selection spans more than one cell.
 863                         // Record all cells
 864                         cur.recordUndoInset();
 865                 } else {
 866                         // Record only the current cell to avoid a jumping
 867                         // cursor after undo
 868                         cur.recordUndo();
 869                 }
 870                 if (realcut)
 871                         copySelection(cur);
 872                 eraseSelection(cur);
 873         }
 874 }
 875
 876
 877 void copySelection(Cursor const & cur)
 878 {
 879         copySelection(cur, cur.selectionAsString(true));
 880 }
 881
 882
 883 void copyInset(Cursor const & cur, Inset * inset, docstring const & plaintext)
 884 {
 885         ParagraphList pars;
 886         Paragraph par;
 887         BufferParams const & bp = cur.buffer()->params();
 888         par.setLayout(bp.documentClass().plainLayout());
 889         par.insertInset(0, inset, Change(Change::UNCHANGED));
 890         pars.push_back(par);
 891         theCuts.push(make_pair(pars, bp.documentClassPtr()));
 892
 893         // stuff the selection onto the X clipboard, from an explicit copy request
 894         putClipboard(theCuts[0].first, theCuts[0].second, plaintext);
 895 }
 896
 897
 898 namespace {
 899
 900 void copySelectionToStack(Cursor const & cur, CutStack & cutstack)
 901 {
 902         // this doesn't make sense, if there is no selection
 903         if (!cur.selection())
 904                 return;
 905
 906         // copySelection can not yet handle the case of cross idx selection
 907         if (cur.selBegin().idx() != cur.selEnd().idx())
 908                 return;
 909
 910         if (cur.inTexted()) {
 911                 Text * text = cur.text();
 912                 LASSERT(text, /**/);
 913                 // ok we have a selection. This is always between cur.selBegin()
 914                 // and sel_end cursor
 915
 916                 // copy behind a space if there is one
 917                 ParagraphList & pars = text->paragraphs();
 918                 pos_type pos = cur.selBegin().pos();
 919                 pit_type par = cur.selBegin().pit();
 920                 while (pos < pars[par].size() &&
 921                        pars[par].isLineSeparator(pos) &&
 922                        (par != cur.selEnd().pit() || pos < cur.selEnd().pos()))
 923                         ++pos;
 924
 925                 copySelectionHelper(*cur.buffer(), *text, par, cur.selEnd().pit(),
 926                         pos, cur.selEnd().pos(),
 927                         cur.buffer()->params().documentClassPtr(), cutstack);
 928
 929                 // Reset the dirty_tabular_stack_ flag only when something
 930                 // is copied to the clipboard (not to the selectionBuffer).
 931                 if (&cutstack == &theCuts)
 932                         dirtyTabularStack(false);
 933         }
 934
 935         if (cur.inMathed()) {
 936                 //lyxerr << "copySelection in mathed" << endl;
 937                 ParagraphList pars;
 938                 Paragraph par;
 939                 BufferParams const & bp = cur.buffer()->params();
 940                 // FIXME This should be the plain layout...right?
 941                 par.setLayout(bp.documentClass().plainLayout());
 942                 par.insert(0, grabSelection(cur), Font(), Change(Change::UNCHANGED));
 943                 pars.push_back(par);
 944                 cutstack.push(make_pair(pars, bp.documentClassPtr()));
 945         }
 946 }
 947
 948 }
 949
 950
 951 void copySelectionToStack()
 952 {
 953         if (!selectionBuffer.empty())
 954                 theCuts.push(selectionBuffer[0]);
 955 }
 956
 957
 958 void copySelection(Cursor const & cur, docstring const & plaintext)
 959 {
 960         // In tablemode, because copy and paste actually use special table stack
 961         // we do not attempt to get selected paragraphs under cursor. Instead, a
 962         // paragraph with the plain text version is generated so that table cells
 963         // can be pasted as pure text somewhere else.
 964         if (cur.selBegin().idx() != cur.selEnd().idx()) {
 965                 ParagraphList pars;
 966                 Paragraph par;
 967                 BufferParams const & bp = cur.buffer()->params();
 968                 par.setLayout(bp.documentClass().plainLayout());
 969                 par.insert(0, plaintext, Font(), Change(Change::UNCHANGED));
 970                 pars.push_back(par);
 971                 theCuts.push(make_pair(pars, bp.documentClassPtr()));
 972         } else {
 973                 copySelectionToStack(cur, theCuts);
 974         }
 975
 976         // stuff the selection onto the X clipboard, from an explicit copy request
 977         putClipboard(theCuts[0].first, theCuts[0].second, plaintext);
 978 }
 979
 980
 981 void saveSelection(Cursor const & cur)
 982 {
 983         // This function is called, not when a selection is formed, but when
 984         // a selection is cleared. Therefore, multiple keyboard selection
 985         // will not repeatively trigger this function (bug 3877).
 986         if (cur.selection()
 987             && cur.selBegin() == cur.bv().cursor().selBegin()
 988             && cur.selEnd() == cur.bv().cursor().selEnd()) {
 989                 LYXERR(Debug::SELECTION, "saveSelection: '" << cur.selectionAsString(true) << "'");
 990                 copySelectionToStack(cur, selectionBuffer);
 991         }
 992 }
 993
 994
 995 bool selection()
 996 {
 997         return !selectionBuffer.empty();
 998 }
 999
1000
1001 void clearSelection()
1002 {
1003         selectionBuffer.clear();
1004 }
1005
1006
1007 void clearCutStack()
1008 {
1009         theCuts.clear();
1010 }
1011
1012
1013 docstring selection(size_t sel_index)
1014 {
1015         return sel_index < theCuts.size()
1016                 ? theCuts[sel_index].first.back().asString(AS_STR_INSETS | AS_STR_NEWLINES)
1017                 : docstring();
1018 }
1019
1020
1021 void pasteParagraphList(Cursor & cur, ParagraphList const & parlist,
1022                         DocumentClassConstPtr docclass, ErrorList & errorList)
1023 {
1024         if (cur.inTexted()) {
1025                 Text * text = cur.text();
1026                 LASSERT(text, /**/);
1027
1028                 PasteReturnValue prv =
1029                         pasteSelectionHelper(cur, parlist, docclass, errorList);
1030                 if (prv.needupdate)
1031                         cur.forceBufferUpdate();
1032                 cur.clearSelection();
1033                 text->setCursor(cur, prv.par, prv.pos);
1034         }
1035
1036         // mathed is handled in InsetMathNest/InsetMathGrid
1037         LASSERT(!cur.inMathed(), /**/);
1038 }
1039
1040
1041 void pasteFromStack(Cursor & cur, ErrorList & errorList, size_t sel_index)
1042 {
1043         // this does not make sense, if there is nothing to paste
1044         if (!checkPastePossible(sel_index))
1045                 return;
1046
1047         cur.recordUndo();
1048         pasteParagraphList(cur, theCuts[sel_index].first,
1049                            theCuts[sel_index].second, errorList);
1050 }
1051
1052
1053 void pasteClipboardText(Cursor & cur, ErrorList & errorList, bool asParagraphs,
1054                         Clipboard::TextType type)
1055 {
1056         // Use internal clipboard if it is the most recent one
1057         // This overrides asParagraphs and type on purpose!
1058         if (theClipboard().isInternal()) {
1059                 pasteFromStack(cur, errorList, 0);
1060                 return;
1061         }
1062
1063         // First try LyX format
1064         if ((type == Clipboard::LyXTextType ||
1065              type == Clipboard::LyXOrPlainTextType ||
1066              type == Clipboard::AnyTextType) &&
1067             theClipboard().hasTextContents(Clipboard::LyXTextType)) {
1068                 string lyx = theClipboard().getAsLyX();
1069                 if (!lyx.empty()) {
1070                         // For some strange reason gcc 3.2 and 3.3 do not accept
1071                         // Buffer buffer(string(), false);
1072                         Buffer buffer("", false);
1073                         buffer.setUnnamed(true);
1074                         if (buffer.readString(lyx)) {
1075                                 cur.recordUndo();
1076                                 pasteParagraphList(cur, buffer.paragraphs(),
1077                                         buffer.params().documentClassPtr(), errorList);
1078                                 return;
1079                         }
1080                 }
1081         }
1082
1083         // Then try TeX and HTML
1084         Clipboard::TextType types[2] = {Clipboard::HtmlTextType, Clipboard::LaTeXTextType};
1085         string names[2] = {"html", "latex"};
1086         for (int i = 0; i < 2; ++i) {
1087                 if (type != types[i] && type != Clipboard::AnyTextType)
1088                         continue;
1089                 bool available = theClipboard().hasTextContents(types[i]);
1090
1091                 // If a specific type was explicitly requested, try to
1092                 // interpret plain text: The user told us that the clipboard
1093                 // contents is in the desired format
1094                 if (!available && type == types[i]) {
1095                         types[i] = Clipboard::PlainTextType;
1096                         available = theClipboard().hasTextContents(types[i]);
1097                 }
1098
1099                 if (available) {
1100                         docstring text = theClipboard().getAsText(types[i]);
1101                         available = !text.empty();
1102                         if (available) {
1103                                 // For some strange reason gcc 3.2 and 3.3 do not accept
1104                                 // Buffer buffer(string(), false);
1105                                 Buffer buffer("", false);
1106                                 buffer.setUnnamed(true);
1107                                 if (buffer.importString(names[i], text, errorList)) {
1108                                         cur.recordUndo();
1109                                         pasteParagraphList(cur, buffer.paragraphs(),
1110                                                 buffer.params().documentClassPtr(), errorList);
1111                                         return;
1112                                 }
1113                         }
1114                 }
1115         }
1116
1117         // Then try plain text
1118         docstring const text = theClipboard().getAsText(Clipboard::PlainTextType);
1119         if (text.empty())
1120                 return;
1121         cur.recordUndo();
1122         if (asParagraphs)
1123                 cur.text()->insertStringAsParagraphs(cur, text, cur.current_font);
1124         else
1125                 cur.text()->insertStringAsLines(cur, text, cur.current_font);
1126 }
1127
1128
1129 void pasteSimpleText(Cursor & cur, bool asParagraphs)
1130 {
1131         docstring text;
1132         // Use internal clipboard if it is the most recent one
1133         if (theClipboard().isInternal()) {
1134                 if (!checkPastePossible(0))
1135                         return;
1136
1137                 ParagraphList const & pars = theCuts[0].first;
1138                 ParagraphList::const_iterator it = pars.begin();
1139                 for (; it != pars.end(); ++it) {
1140                         if (it != pars.begin())
1141                                 text += "\n";
1142                         text += (*it).asString();
1143                 }
1144                 asParagraphs = false;
1145         } else {
1146                 // Then try plain text
1147                 text = theClipboard().getAsText(Clipboard::PlainTextType);
1148         }
1149
1150         if (text.empty())
1151                 return;
1152
1153         cur.recordUndo();
1154         cutSelection(cur, true, false);
1155         if (asParagraphs)
1156                 cur.text()->insertStringAsParagraphs(cur, text, cur.current_font);
1157         else
1158                 cur.text()->insertStringAsLines(cur, text, cur.current_font);
1159 }
1160
1161
1162 void pasteClipboardGraphics(Cursor & cur, ErrorList & /* errorList */,
1163                             Clipboard::GraphicsType preferedType)
1164 {
1165         LASSERT(theClipboard().hasGraphicsContents(preferedType), /**/);
1166
1167         // get picture from clipboard
1168         FileName filename = theClipboard().getAsGraphics(cur, preferedType);
1169         if (filename.empty())
1170                 return;
1171
1172         // create inset for graphic
1173         InsetGraphics * inset = new InsetGraphics(cur.buffer());
1174         InsetGraphicsParams params;
1175         params.filename = support::DocFileName(filename.absFileName(), false);
1176         inset->setParams(params);
1177         cur.recordUndo();
1178         cur.insert(inset);
1179 }
1180
1181
1182 void pasteSelection(Cursor & cur, ErrorList & errorList)
1183 {
1184         if (selectionBuffer.empty())
1185                 return;
1186         cur.recordUndo();
1187         pasteParagraphList(cur, selectionBuffer[0].first,
1188                            selectionBuffer[0].second, errorList);
1189 }
1190
1191
1192 void replaceSelectionWithString(Cursor & cur, docstring const & str)
1193 {
1194         cur.recordUndo();
1195         DocIterator selbeg = cur.selectionBegin();
1196
1197         // Get font setting before we cut, we need a copy here, not a bare reference.
1198         Font const font =
1199                 selbeg.paragraph().getFontSettings(cur.buffer()->params(), selbeg.pos());
1200
1201         // Insert the new string
1202         pos_type pos = cur.selEnd().pos();
1203         Paragraph & par = cur.selEnd().paragraph();
1204         docstring::const_iterator cit = str.begin();
1205         docstring::const_iterator end = str.end();
1206         for (; cit != end; ++cit, ++pos)
1207                 par.insertChar(pos, *cit, font, cur.buffer()->params().trackChanges);
1208
1209         // Cut the selection
1210         cutSelection(cur, true, false);
1211 }
1212
1213
1214 void replaceSelection(Cursor & cur)
1215 {
1216         if (cur.selection())
1217                 cutSelection(cur, true, false);
1218 }
1219
1220
1221 void eraseSelection(Cursor & cur)
1222 {
1223         //lyxerr << "cap::eraseSelection begin: " << cur << endl;
1224         CursorSlice const & i1 = cur.selBegin();
1225         CursorSlice const & i2 = cur.selEnd();
1226         if (i1.inset().asInsetMath()) {
1227                 saveSelection(cur);
1228                 cur.top() = i1;
1229                 if (i1.idx() == i2.idx()) {
1230                         i1.cell().erase(i1.pos(), i2.pos());
1231                         // We may have deleted i1.cell(cur.pos()).
1232                         // Make sure that pos is valid.
1233                         if (cur.pos() > cur.lastpos())
1234                                 cur.pos() = cur.lastpos();
1235                 } else {
1236                         InsetMath * p = i1.asInsetMath();
1237                         Inset::row_type r1, r2;
1238                         Inset::col_type c1, c2;
1239                         region(i1, i2, r1, r2, c1, c2);
1240                         for (Inset::row_type row = r1; row <= r2; ++row)
1241                                 for (Inset::col_type col = c1; col <= c2; ++col)
1242                                         p->cell(p->index(row, col)).clear();
1243                         // We've deleted the whole cell. Only pos 0 is valid.
1244                         cur.pos() = 0;
1245                 }
1246                 // need a valid cursor. (Lgb)
1247                 cur.clearSelection();
1248         } else {
1249                 lyxerr << "can't erase this selection 1" << endl;
1250         }
1251         //lyxerr << "cap::eraseSelection end: " << cur << endl;
1252 }
1253
1254
1255 void selDel(Cursor & cur)
1256 {
1257         //lyxerr << "cap::selDel" << endl;
1258         if (cur.selection())
1259                 eraseSelection(cur);
1260 }
1261
1262
1263 void selClearOrDel(Cursor & cur)
1264 {
1265         //lyxerr << "cap::selClearOrDel" << endl;
1266         if (lyxrc.auto_region_delete)
1267                 selDel(cur);
1268         else
1269                 cur.setSelection(false);
1270 }
1271
1272
1273 docstring grabSelection(Cursor const & cur)
1274 {
1275         if (!cur.selection())
1276                 return docstring();
1277
1278 #if 0
1279         // grab selection by glueing multiple cells together. This is not what
1280         // we want because selections spanning multiple cells will get "&" and "\\"
1281         // seperators.
1282         ostringstream os;
1283         for (DocIterator dit = cur.selectionBegin();
1284              dit != cur.selectionEnd(); dit.forwardPos())
1285                 os << asString(dit.cell());
1286         return os.str();
1287 #endif
1288
1289         CursorSlice i1 = cur.selBegin();
1290         CursorSlice i2 = cur.selEnd();
1291
1292         if (i1.idx() == i2.idx()) {
1293                 if (i1.inset().asInsetMath()) {
1294                         MathData::const_iterator it = i1.cell().begin();
1295                         Buffer * buf = cur.buffer();
1296                         return asString(MathData(buf, it + i1.pos(), it + i2.pos()));
1297                 } else {
1298                         return from_ascii("unknown selection 1");
1299                 }
1300         }
1301
1302         Inset::row_type r1, r2;
1303         Inset::col_type c1, c2;
1304         region(i1, i2, r1, r2, c1, c2);
1305
1306         docstring data;
1307         if (i1.inset().asInsetMath()) {
1308                 for (Inset::row_type row = r1; row <= r2; ++row) {
1309                         if (row > r1)
1310                                 data += "\\\\";
1311                         for (Inset::col_type col = c1; col <= c2; ++col) {
1312                                 if (col > c1)
1313                                         data += '&';
1314                                 data += asString(i1.asInsetMath()->
1315                                         cell(i1.asInsetMath()->index(row, col)));
1316                         }
1317                 }
1318         } else {
1319                 data = from_ascii("unknown selection 2");
1320         }
1321         return data;
1322 }
1323
1324
1325 void dirtyTabularStack(bool b)
1326 {
1327         dirty_tabular_stack_ = b;
1328 }
1329
1330
1331 bool tabularStackDirty()
1332 {
1333         return dirty_tabular_stack_;
1334 }
1335
1336
1337 } // namespace cap
1338 } // namespace lyx