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         static Buffer * buffer = theBufferList().newInternalBuffer(
 482                 FileName::tempName("clipboard.internal").absFileName());
 483
 484         // These two things only really need doing the first time.
 485         buffer->setUnnamed(true);
 486         buffer->inset().setBuffer(*buffer);
 487
 488         // This needs doing every time.
 489         buffer->params().setDocumentClass(docclass);
 490
 491         // we will use pasteSelectionHelper to copy the paragraphs into the
 492         // temporary Buffer, since it does a lot of things to fix them up.
 493         DocIterator dit = doc_iterator_begin(buffer, &buffer->inset());
 494         ErrorList el;
 495         pasteSelectionHelper(dit, paragraphs, docclass, el);
 496
 497         // The Buffer is being used to export. This is necessary so that the
 498         // updateMacros call will record the needed information.
 499         MarkAsExporting mex(buffer);
 500
 501         buffer->updateBuffer(Buffer::UpdateMaster, OutputUpdate);
 502         buffer->updateMacros();
 503         buffer->updateMacroInstances(OutputUpdate);
 504
 505         // LyX's own format
 506         string lyx;
 507         ostringstream oslyx;
 508         if (buffer->write(oslyx))
 509                 lyx = oslyx.str();
 510
 511         // XHTML format
 512         odocstringstream oshtml;
 513         OutputParams runparams(encodings.fromLyXName("utf8"));
 514         buffer->writeLyXHTMLSource(oshtml, runparams, Buffer::FullSource);
 515
 516         theClipboard().put(lyx, oshtml.str(), plaintext);
 517
 518         // Save that memory
 519         buffer->paragraphs().clear();
 520 }
 521
 522
 523 /// return true if the whole ParagraphList is deleted
 524 static bool isFullyDeleted(ParagraphList const & pars)
 525 {
 526         pit_type const pars_size = static_cast<pit_type>(pars.size());
 527
 528         // check all paragraphs
 529         for (pit_type pit = 0; pit < pars_size; ++pit) {
 530                 if (!pars[pit].empty())   // prevent assertion failure
 531                         if (!pars[pit].isDeleted(0, pars[pit].size()))
 532                                 return false;
 533         }
 534         return true;
 535 }
 536
 537
 538 void copySelectionHelper(Buffer const & buf, Text const & text,
 539         pit_type startpit, pit_type endpit,
 540         int start, int end, DocumentClassConstPtr dc, CutStack & cutstack)
 541 {
 542         ParagraphList const & pars = text.paragraphs();
 543
 544         LASSERT(0 <= start && start <= pars[startpit].size(), /**/);
 545         LASSERT(0 <= end && end <= pars[endpit].size(), /**/);
 546         LASSERT(startpit != endpit || start <= end, /**/);
 547
 548         // Clone the paragraphs within the selection.
 549         ParagraphList copy_pars(boost::next(pars.begin(), startpit),
 550                                 boost::next(pars.begin(), endpit + 1));
 551
 552         // Remove the end of the last paragraph; afterwards, remove the
 553         // beginning of the first paragraph. Keep this order - there may only
 554         // be one paragraph!  Do not track deletions here; this is an internal
 555         // action not visible to the user
 556
 557         Paragraph & back = copy_pars.back();
 558         back.eraseChars(end, back.size(), false);
 559         Paragraph & front = copy_pars.front();
 560         front.eraseChars(0, start, false);
 561
 562         ParagraphList::iterator it = copy_pars.begin();
 563         ParagraphList::iterator it_end = copy_pars.end();
 564
 565         for (; it != it_end; ++it) {
 566                 // Since we have a copy of the paragraphs, the insets
 567                 // do not have a proper buffer reference. It makes
 568                 // sense to add them temporarily, because the
 569                 // operations below depend on that (acceptChanges included).
 570                 it->setBuffer(const_cast<Buffer &>(buf));
 571                 // PassThru paragraphs have the Language
 572                 // latex_language. This is invalid for others, so we
 573                 // need to change it to the buffer language.
 574                 if (it->isPassThru())
 575                         it->changeLanguage(buf.params(),
 576                                            latex_language, buf.language());
 577         }
 578
 579         // do not copy text (also nested in insets) which is marked as
 580         // deleted, unless the whole selection was deleted
 581         if (!isFullyDeleted(copy_pars))
 582                 acceptChanges(copy_pars, buf.params());
 583         else
 584                 rejectChanges(copy_pars, buf.params());
 585
 586
 587         // do some final cleanup now, to make sure that the paragraphs
 588         // are not linked to something else.
 589         it = copy_pars.begin();
 590         for (; it != it_end; ++it) {
 591                 it->setBuffer(*static_cast<Buffer *>(0));
 592                 it->setInsetOwner(0);
 593         }
 594
 595         cutstack.push(make_pair(copy_pars, dc));
 596 }
 597
 598 } // namespace anon
 599
 600
 601
 602
 603 namespace cap {
 604
 605 void region(CursorSlice const & i1, CursorSlice const & i2,
 606             Inset::row_type & r1, Inset::row_type & r2,
 607             Inset::col_type & c1, Inset::col_type & c2)
 608 {
 609         Inset & p = i1.inset();
 610         c1 = p.col(i1.idx());
 611         c2 = p.col(i2.idx());
 612         if (c1 > c2)
 613                 swap(c1, c2);
 614         r1 = p.row(i1.idx());
 615         r2 = p.row(i2.idx());
 616         if (r1 > r2)
 617                 swap(r1, r2);
 618 }
 619
 620
 621 docstring grabAndEraseSelection(Cursor & cur)
 622 {
 623         if (!cur.selection())
 624                 return docstring();
 625         docstring res = grabSelection(cur);
 626         eraseSelection(cur);
 627         return res;
 628 }
 629
 630
 631 bool reduceSelectionToOneCell(Cursor & cur)
 632 {
 633         if (!cur.selection() || !cur.inMathed())
 634                 return false;
 635
 636         CursorSlice i1 = cur.selBegin();
 637         CursorSlice i2 = cur.selEnd();
 638         if (!i1.inset().asInsetMath())
 639                 return false;
 640
 641         // the easy case: do nothing if only one cell is selected
 642         if (i1.idx() == i2.idx())
 643                 return true;
 644
 645         cur.top().pos() = 0;
 646         cur.resetAnchor();
 647         cur.top().pos() = cur.top().lastpos();
 648
 649         return true;
 650 }
 651
 652
 653 bool multipleCellsSelected(Cursor const & cur)
 654 {
 655         if (!cur.selection() || !cur.inMathed())
 656                 return false;
 657
 658         CursorSlice i1 = cur.selBegin();
 659         CursorSlice i2 = cur.selEnd();
 660         if (!i1.inset().asInsetMath())
 661                 return false;
 662
 663         if (i1.idx() == i2.idx())
 664                 return false;
 665
 666         return true;
 667 }
 668
 669
 670 void switchBetweenClasses(DocumentClassConstPtr oldone,
 671                 DocumentClassConstPtr newone, InsetText & in, ErrorList & errorlist)
 672 {
 673         errorlist.clear();
 674
 675         LASSERT(!in.paragraphs().empty(), /**/);
 676         if (oldone == newone)
 677                 return;
 678
 679         DocumentClass const & oldtc = *oldone;
 680         DocumentClass const & newtc = *newone;
 681
 682         // layouts
 683         ParIterator it = par_iterator_begin(in);
 684         ParIterator end = par_iterator_end(in);
 685         // for remembering which layouts we've had to add
 686         set<docstring> newlayouts;
 687         for (; it != end; ++it) {
 688                 docstring const name = it->layout().name();
 689
 690                 // the pasted text will keep their own layout name. If this layout does
 691                 // not exist in the new document, it will behave like a standard layout.
 692                 bool const added_one = newtc.addLayoutIfNeeded(name);
 693                 if (added_one)
 694                         newlayouts.insert(name);
 695
 696                 if (added_one || newlayouts.find(name) != newlayouts.end()) {
 697                         // Warn the user.
 698                         docstring const s = bformat(_("Layout `%1$s' was not found."), name);
 699                         errorlist.push_back(
 700                                 ErrorItem(_("Layout Not Found"), s, it->id(), 0, it->size()));
 701                 }
 702
 703                 if (in.usePlainLayout())
 704                         it->setLayout(newtc.plainLayout());
 705                 else
 706                         it->setLayout(newtc[name]);
 707         }
 708
 709         // character styles
 710         InsetIterator const i_end = inset_iterator_end(in);
 711         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 712                 if (it->lyxCode() != FLEX_CODE)
 713                         // FIXME: Should we verify all InsetCollapsable?
 714                         continue;
 715
 716                 docstring const layoutName = it->layoutName();
 717                 docstring const & n = newone->insetLayout(layoutName).name();
 718                 bool const is_undefined = n.empty() ||
 719                         n == DocumentClass::plainInsetLayout().name();
 720                 if (!is_undefined)
 721                         continue;
 722
 723                 // The flex inset is undefined in newtc
 724                 docstring const oldname = from_utf8(oldtc.name());
 725                 docstring const newname = from_utf8(newtc.name());
 726                 docstring s;
 727                 if (oldname == newname)
 728                         s = bformat(_("Flex inset %1$s is undefined after "
 729                                 "reloading `%2$s' layout."), layoutName, oldname);
 730                 else
 731                         s = bformat(_("Flex inset %1$s is undefined because of "
 732                                 "conversion from `%2$s' layout to `%3$s'."),
 733                                 layoutName, oldname, newname);
 734                 // To warn the user that something had to be done.
 735                 errorlist.push_back(ErrorItem(
 736                                 _("Undefined flex inset"),
 737                                 s, it.paragraph().id(), it.pos(), it.pos() + 1));
 738         }
 739 }
 740
 741
 742 vector<docstring> availableSelections(Buffer const * buf)
 743 {
 744         vector<docstring> selList;
 745         if (!buf)
 746                 return selList;
 747
 748         CutStack::const_iterator cit = theCuts.begin();
 749         CutStack::const_iterator end = theCuts.end();
 750         for (; cit != end; ++cit) {
 751                 // we do not use cit-> here because gcc 2.9x does not
 752                 // like it (JMarc)
 753                 ParagraphList const & pars = (*cit).first;
 754                 docstring asciiSel;
 755                 ParagraphList::const_iterator pit = pars.begin();
 756                 ParagraphList::const_iterator pend = pars.end();
 757                 for (; pit != pend; ++pit) {
 758                         Paragraph par(*pit, 0, 26);
 759                         // adapt paragraph to current buffer.
 760                         par.setBuffer(const_cast<Buffer &>(*buf));
 761                         asciiSel += par.asString(AS_STR_INSETS);
 762                         if (asciiSel.size() > 25) {
 763                                 asciiSel.replace(22, docstring::npos,
 764                                                  from_ascii("..."));
 765                                 break;
 766                         }
 767                 }
 768
 769                 selList.push_back(asciiSel);
 770         }
 771
 772         return selList;
 773 }
 774
 775
 776 size_type numberOfSelections()
 777 {
 778         return theCuts.size();
 779 }
 780
 781
 782 void cutSelection(Cursor & cur, bool doclear, bool realcut)
 783 {
 784         // This doesn't make sense, if there is no selection
 785         if (!cur.selection())
 786                 return;
 787
 788         // OK, we have a selection. This is always between cur.selBegin()
 789         // and cur.selEnd()
 790
 791         if (cur.inTexted()) {
 792                 Text * text = cur.text();
 793                 LASSERT(text, /**/);
 794
 795                 saveSelection(cur);
 796
 797                 // make sure that the depth behind the selection are restored, too
 798                 cur.recordUndoSelection();
 799                 pit_type begpit = cur.selBegin().pit();
 800                 pit_type endpit = cur.selEnd().pit();
 801
 802                 int endpos = cur.selEnd().pos();
 803
 804                 BufferParams const & bp = cur.buffer()->params();
 805                 if (realcut) {
 806                         copySelectionHelper(*cur.buffer(),
 807                                 *text,
 808                                 begpit, endpit,
 809                                 cur.selBegin().pos(), endpos,
 810                                 bp.documentClassPtr(), theCuts);
 811                         // Stuff what we got on the clipboard.
 812                         // Even if there is no selection.
 813                         putClipboard(theCuts[0].first, theCuts[0].second,
 814                                 cur.selectionAsString(true));
 815                 }
 816
 817                 if (begpit != endpit)
 818                         cur.screenUpdateFlags(Update::Force | Update::FitCursor);
 819
 820                 boost::tie(endpit, endpos) =
 821                         eraseSelectionHelper(bp,
 822                                 text->paragraphs(),
 823                                 begpit, endpit,
 824                                 cur.selBegin().pos(), endpos);
 825
 826                 // cutSelection can invalidate the cursor so we need to set
 827                 // it anew. (Lgb)
 828                 // we prefer the end for when tracking changes
 829                 cur.pos() = endpos;
 830                 cur.pit() = endpit;
 831
 832                 // sometimes necessary
 833                 if (doclear
 834                         && text->paragraphs()[begpit].stripLeadingSpaces(bp.trackChanges))
 835                         cur.fixIfBroken();
 836
 837                 // need a valid cursor. (Lgb)
 838                 cur.clearSelection();
 839
 840                 // After a cut operation, we must make sure that the Buffer is updated
 841                 // because some further operation might need updated label information for
 842                 // example. So we cannot just use "cur.forceBufferUpdate()" here.
 843                 // This fixes #7071.
 844                 cur.buffer()->updateBuffer();
 845
 846                 // tell tabular that a recent copy happened
 847                 dirtyTabularStack(false);
 848         }
 849
 850         if (cur.inMathed()) {
 851                 if (cur.selBegin().idx() != cur.selEnd().idx()) {
 852                         // The current selection spans more than one cell.
 853                         // Record all cells
 854                         cur.recordUndoInset();
 855                 } else {
 856                         // Record only the current cell to avoid a jumping
 857                         // cursor after undo
 858                         cur.recordUndo();
 859                 }
 860                 if (realcut)
 861                         copySelection(cur);
 862                 eraseSelection(cur);
 863         }
 864 }
 865
 866
 867 void copySelection(Cursor const & cur)
 868 {
 869         copySelection(cur, cur.selectionAsString(true));
 870 }
 871
 872
 873 void copyInset(Cursor const & cur, Inset * inset, docstring const & plaintext)
 874 {
 875         ParagraphList pars;
 876         Paragraph par;
 877         BufferParams const & bp = cur.buffer()->params();
 878         par.setLayout(bp.documentClass().plainLayout());
 879         par.insertInset(0, inset, Change(Change::UNCHANGED));
 880         pars.push_back(par);
 881         theCuts.push(make_pair(pars, bp.documentClassPtr()));
 882
 883         // stuff the selection onto the X clipboard, from an explicit copy request
 884         putClipboard(theCuts[0].first, theCuts[0].second, plaintext);
 885 }
 886
 887
 888 namespace {
 889
 890 void copySelectionToStack(Cursor const & cur, CutStack & cutstack)
 891 {
 892         // this doesn't make sense, if there is no selection
 893         if (!cur.selection())
 894                 return;
 895
 896         // copySelection can not yet handle the case of cross idx selection
 897         if (cur.selBegin().idx() != cur.selEnd().idx())
 898                 return;
 899
 900         if (cur.inTexted()) {
 901                 Text * text = cur.text();
 902                 LASSERT(text, /**/);
 903                 // ok we have a selection. This is always between cur.selBegin()
 904                 // and sel_end cursor
 905
 906                 // copy behind a space if there is one
 907                 ParagraphList & pars = text->paragraphs();
 908                 pos_type pos = cur.selBegin().pos();
 909                 pit_type par = cur.selBegin().pit();
 910                 while (pos < pars[par].size() &&
 911                        pars[par].isLineSeparator(pos) &&
 912                        (par != cur.selEnd().pit() || pos < cur.selEnd().pos()))
 913                         ++pos;
 914
 915                 copySelectionHelper(*cur.buffer(), *text, par, cur.selEnd().pit(),
 916                         pos, cur.selEnd().pos(),
 917                         cur.buffer()->params().documentClassPtr(), cutstack);
 918
 919                 // Reset the dirty_tabular_stack_ flag only when something
 920                 // is copied to the clipboard (not to the selectionBuffer).
 921                 if (&cutstack == &theCuts)
 922                         dirtyTabularStack(false);
 923         }
 924
 925         if (cur.inMathed()) {
 926                 //lyxerr << "copySelection in mathed" << endl;
 927                 ParagraphList pars;
 928                 Paragraph par;
 929                 BufferParams const & bp = cur.buffer()->params();
 930                 // FIXME This should be the plain layout...right?
 931                 par.setLayout(bp.documentClass().plainLayout());
 932                 par.insert(0, grabSelection(cur), Font(), Change(Change::UNCHANGED));
 933                 pars.push_back(par);
 934                 cutstack.push(make_pair(pars, bp.documentClassPtr()));
 935         }
 936 }
 937
 938 }
 939
 940
 941 void copySelectionToStack()
 942 {
 943         if (!selectionBuffer.empty())
 944                 theCuts.push(selectionBuffer[0]);
 945 }
 946
 947
 948 void copySelection(Cursor const & cur, docstring const & plaintext)
 949 {
 950         // In tablemode, because copy and paste actually use special table stack
 951         // we do not attempt to get selected paragraphs under cursor. Instead, a
 952         // paragraph with the plain text version is generated so that table cells
 953         // can be pasted as pure text somewhere else.
 954         if (cur.selBegin().idx() != cur.selEnd().idx()) {
 955                 ParagraphList pars;
 956                 Paragraph par;
 957                 BufferParams const & bp = cur.buffer()->params();
 958                 par.setLayout(bp.documentClass().plainLayout());
 959                 par.insert(0, plaintext, Font(), Change(Change::UNCHANGED));
 960                 pars.push_back(par);
 961                 theCuts.push(make_pair(pars, bp.documentClassPtr()));
 962         } else {
 963                 copySelectionToStack(cur, theCuts);
 964         }
 965
 966         // stuff the selection onto the X clipboard, from an explicit copy request
 967         putClipboard(theCuts[0].first, theCuts[0].second, plaintext);
 968 }
 969
 970
 971 void saveSelection(Cursor const & cur)
 972 {
 973         // This function is called, not when a selection is formed, but when
 974         // a selection is cleared. Therefore, multiple keyboard selection
 975         // will not repeatively trigger this function (bug 3877).
 976         if (cur.selection()
 977             && cur.selBegin() == cur.bv().cursor().selBegin()
 978             && cur.selEnd() == cur.bv().cursor().selEnd()) {
 979                 LYXERR(Debug::SELECTION, "saveSelection: '" << cur.selectionAsString(true) << "'");
 980                 copySelectionToStack(cur, selectionBuffer);
 981         }
 982 }
 983
 984
 985 bool selection()
 986 {
 987         return !selectionBuffer.empty();
 988 }
 989
 990
 991 void clearSelection()
 992 {
 993         selectionBuffer.clear();
 994 }
 995
 996
 997 void clearCutStack()
 998 {
 999         theCuts.clear();
1000 }
1001
1002
1003 docstring selection(size_t sel_index)
1004 {
1005         return sel_index < theCuts.size()
1006                 ? theCuts[sel_index].first.back().asString(AS_STR_INSETS | AS_STR_NEWLINES)
1007                 : docstring();
1008 }
1009
1010
1011 void pasteParagraphList(Cursor & cur, ParagraphList const & parlist,
1012                         DocumentClassConstPtr docclass, ErrorList & errorList)
1013 {
1014         if (cur.inTexted()) {
1015                 Text * text = cur.text();
1016                 LASSERT(text, /**/);
1017
1018                 PasteReturnValue prv =
1019                         pasteSelectionHelper(cur, parlist, docclass, errorList);
1020                 if (prv.needupdate)
1021                         cur.forceBufferUpdate();
1022                 cur.clearSelection();
1023                 text->setCursor(cur, prv.par, prv.pos);
1024         }
1025
1026         // mathed is handled in InsetMathNest/InsetMathGrid
1027         LASSERT(!cur.inMathed(), /**/);
1028 }
1029
1030
1031 void pasteFromStack(Cursor & cur, ErrorList & errorList, size_t sel_index)
1032 {
1033         // this does not make sense, if there is nothing to paste
1034         if (!checkPastePossible(sel_index))
1035                 return;
1036
1037         cur.recordUndo();
1038         pasteParagraphList(cur, theCuts[sel_index].first,
1039                            theCuts[sel_index].second, errorList);
1040 }
1041
1042
1043 void pasteClipboardText(Cursor & cur, ErrorList & errorList, bool asParagraphs,
1044                         Clipboard::TextType type)
1045 {
1046         // Use internal clipboard if it is the most recent one
1047         // This overrides asParagraphs and type on purpose!
1048         if (theClipboard().isInternal()) {
1049                 pasteFromStack(cur, errorList, 0);
1050                 return;
1051         }
1052
1053         // First try LyX format
1054         if ((type == Clipboard::LyXTextType ||
1055              type == Clipboard::LyXOrPlainTextType ||
1056              type == Clipboard::AnyTextType) &&
1057             theClipboard().hasTextContents(Clipboard::LyXTextType)) {
1058                 string lyx = theClipboard().getAsLyX();
1059                 if (!lyx.empty()) {
1060                         // For some strange reason gcc 3.2 and 3.3 do not accept
1061                         // Buffer buffer(string(), false);
1062                         Buffer buffer("", false);
1063                         buffer.setUnnamed(true);
1064                         if (buffer.readString(lyx)) {
1065                                 cur.recordUndo();
1066                                 pasteParagraphList(cur, buffer.paragraphs(),
1067                                         buffer.params().documentClassPtr(), errorList);
1068                                 return;
1069                         }
1070                 }
1071         }
1072
1073         // Then try TeX and HTML
1074         Clipboard::TextType types[2] = {Clipboard::HtmlTextType, Clipboard::LaTeXTextType};
1075         string names[2] = {"html", "latex"};
1076         for (int i = 0; i < 2; ++i) {
1077                 if (type != types[i] && type != Clipboard::AnyTextType)
1078                         continue;
1079                 bool available = theClipboard().hasTextContents(types[i]);
1080
1081                 // If a specific type was explicitly requested, try to
1082                 // interpret plain text: The user told us that the clipboard
1083                 // contents is in the desired format
1084                 if (!available && type == types[i]) {
1085                         types[i] = Clipboard::PlainTextType;
1086                         available = theClipboard().hasTextContents(types[i]);
1087                 }
1088
1089                 if (available) {
1090                         docstring text = theClipboard().getAsText(types[i]);
1091                         available = !text.empty();
1092                         if (available) {
1093                                 // For some strange reason gcc 3.2 and 3.3 do not accept
1094                                 // Buffer buffer(string(), false);
1095                                 Buffer buffer("", false);
1096                                 buffer.setUnnamed(true);
1097                                 if (buffer.importString(names[i], text, errorList)) {
1098                                         cur.recordUndo();
1099                                         pasteParagraphList(cur, buffer.paragraphs(),
1100                                                 buffer.params().documentClassPtr(), errorList);
1101                                         return;
1102                                 }
1103                         }
1104                 }
1105         }
1106
1107         // Then try plain text
1108         docstring const text = theClipboard().getAsText(Clipboard::PlainTextType);
1109         if (text.empty())
1110                 return;
1111         cur.recordUndo();
1112         if (asParagraphs)
1113                 cur.text()->insertStringAsParagraphs(cur, text, cur.current_font);
1114         else
1115                 cur.text()->insertStringAsLines(cur, text, cur.current_font);
1116 }
1117
1118
1119 void pasteSimpleText(Cursor & cur, bool asParagraphs)
1120 {
1121         docstring text;
1122         // Use internal clipboard if it is the most recent one
1123         if (theClipboard().isInternal()) {
1124                 if (!checkPastePossible(0))
1125                         return;
1126
1127                 ParagraphList const & pars = theCuts[0].first;
1128                 ParagraphList::const_iterator it = pars.begin();
1129                 for (; it != pars.end(); ++it) {
1130                         if (it != pars.begin())
1131                                 text += "\n";
1132                         text += (*it).asString();
1133                 }
1134                 asParagraphs = false;
1135         } else {
1136                 // Then try plain text
1137                 text = theClipboard().getAsText(Clipboard::PlainTextType);
1138         }
1139
1140         if (text.empty())
1141                 return;
1142
1143         cur.recordUndo();
1144         cutSelection(cur, true, false);
1145         if (asParagraphs)
1146                 cur.text()->insertStringAsParagraphs(cur, text, cur.current_font);
1147         else
1148                 cur.text()->insertStringAsLines(cur, text, cur.current_font);
1149 }
1150
1151
1152 void pasteClipboardGraphics(Cursor & cur, ErrorList & /* errorList */,
1153                             Clipboard::GraphicsType preferedType)
1154 {
1155         LASSERT(theClipboard().hasGraphicsContents(preferedType), /**/);
1156
1157         // get picture from clipboard
1158         FileName filename = theClipboard().getAsGraphics(cur, preferedType);
1159         if (filename.empty())
1160                 return;
1161
1162         // create inset for graphic
1163         InsetGraphics * inset = new InsetGraphics(cur.buffer());
1164         InsetGraphicsParams params;
1165         params.filename = support::DocFileName(filename.absFileName(), false);
1166         inset->setParams(params);
1167         cur.recordUndo();
1168         cur.insert(inset);
1169 }
1170
1171
1172 void pasteSelection(Cursor & cur, ErrorList & errorList)
1173 {
1174         if (selectionBuffer.empty())
1175                 return;
1176         cur.recordUndo();
1177         pasteParagraphList(cur, selectionBuffer[0].first,
1178                            selectionBuffer[0].second, errorList);
1179 }
1180
1181
1182 void replaceSelectionWithString(Cursor & cur, docstring const & str)
1183 {
1184         cur.recordUndo();
1185         DocIterator selbeg = cur.selectionBegin();
1186
1187         // Get font setting before we cut, we need a copy here, not a bare reference.
1188         Font const font =
1189                 selbeg.paragraph().getFontSettings(cur.buffer()->params(), selbeg.pos());
1190
1191         // Insert the new string
1192         pos_type pos = cur.selEnd().pos();
1193         Paragraph & par = cur.selEnd().paragraph();
1194         docstring::const_iterator cit = str.begin();
1195         docstring::const_iterator end = str.end();
1196         for (; cit != end; ++cit, ++pos)
1197                 par.insertChar(pos, *cit, font, cur.buffer()->params().trackChanges);
1198
1199         // Cut the selection
1200         cutSelection(cur, true, false);
1201 }
1202
1203
1204 void replaceSelection(Cursor & cur)
1205 {
1206         if (cur.selection())
1207                 cutSelection(cur, true, false);
1208 }
1209
1210
1211 void eraseSelection(Cursor & cur)
1212 {
1213         //lyxerr << "cap::eraseSelection begin: " << cur << endl;
1214         CursorSlice const & i1 = cur.selBegin();
1215         CursorSlice const & i2 = cur.selEnd();
1216         if (i1.inset().asInsetMath()) {
1217                 saveSelection(cur);
1218                 cur.top() = i1;
1219                 if (i1.idx() == i2.idx()) {
1220                         i1.cell().erase(i1.pos(), i2.pos());
1221                         // We may have deleted i1.cell(cur.pos()).
1222                         // Make sure that pos is valid.
1223                         if (cur.pos() > cur.lastpos())
1224                                 cur.pos() = cur.lastpos();
1225                 } else {
1226                         InsetMath * p = i1.asInsetMath();
1227                         Inset::row_type r1, r2;
1228                         Inset::col_type c1, c2;
1229                         region(i1, i2, r1, r2, c1, c2);
1230                         for (Inset::row_type row = r1; row <= r2; ++row)
1231                                 for (Inset::col_type col = c1; col <= c2; ++col)
1232                                         p->cell(p->index(row, col)).clear();
1233                         // We've deleted the whole cell. Only pos 0 is valid.
1234                         cur.pos() = 0;
1235                 }
1236                 // need a valid cursor. (Lgb)
1237                 cur.clearSelection();
1238         } else {
1239                 lyxerr << "can't erase this selection 1" << endl;
1240         }
1241         //lyxerr << "cap::eraseSelection end: " << cur << endl;
1242 }
1243
1244
1245 void selDel(Cursor & cur)
1246 {
1247         //lyxerr << "cap::selDel" << endl;
1248         if (cur.selection())
1249                 eraseSelection(cur);
1250 }
1251
1252
1253 void selClearOrDel(Cursor & cur)
1254 {
1255         //lyxerr << "cap::selClearOrDel" << endl;
1256         if (lyxrc.auto_region_delete)
1257                 selDel(cur);
1258         else
1259                 cur.setSelection(false);
1260 }
1261
1262
1263 docstring grabSelection(Cursor const & cur)
1264 {
1265         if (!cur.selection())
1266                 return docstring();
1267
1268 #if 0
1269         // grab selection by glueing multiple cells together. This is not what
1270         // we want because selections spanning multiple cells will get "&" and "\\"
1271         // seperators.
1272         ostringstream os;
1273         for (DocIterator dit = cur.selectionBegin();
1274              dit != cur.selectionEnd(); dit.forwardPos())
1275                 os << asString(dit.cell());
1276         return os.str();
1277 #endif
1278
1279         CursorSlice i1 = cur.selBegin();
1280         CursorSlice i2 = cur.selEnd();
1281
1282         if (i1.idx() == i2.idx()) {
1283                 if (i1.inset().asInsetMath()) {
1284                         MathData::const_iterator it = i1.cell().begin();
1285                         Buffer * buf = cur.buffer();
1286                         return asString(MathData(buf, it + i1.pos(), it + i2.pos()));
1287                 } else {
1288                         return from_ascii("unknown selection 1");
1289                 }
1290         }
1291
1292         Inset::row_type r1, r2;
1293         Inset::col_type c1, c2;
1294         region(i1, i2, r1, r2, c1, c2);
1295
1296         docstring data;
1297         if (i1.inset().asInsetMath()) {
1298                 for (Inset::row_type row = r1; row <= r2; ++row) {
1299                         if (row > r1)
1300                                 data += "\\\\";
1301                         for (Inset::col_type col = c1; col <= c2; ++col) {
1302                                 if (col > c1)
1303                                         data += '&';
1304                                 data += asString(i1.asInsetMath()->
1305                                         cell(i1.asInsetMath()->index(row, col)));
1306                         }
1307                 }
1308         } else {
1309                 data = from_ascii("unknown selection 2");
1310         }
1311         return data;
1312 }
1313
1314
1315 void dirtyTabularStack(bool b)
1316 {
1317         dirty_tabular_stack_ = b;
1318 }
1319
1320
1321 bool tabularStackDirty()
1322 {
1323         return dirty_tabular_stack_;
1324 }
1325
1326
1327 } // namespace cap
1328 } // namespace lyx