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 * 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         // In most of these cases, we can try to recover.
 555         LASSERT(0 <= start, start = 0);
 556         LASSERT(start <= pars[startpit].size(), start = pars[startpit].size());
 557         LASSERT(0 <= end, end = 0);
 558         LASSERT(end <= pars[endpit].size(), end = pars[endpit].size());
 559         LASSERT(startpit != endpit || start <= end, return);
 560
 561         // Clone the paragraphs within the selection.
 562         ParagraphList copy_pars(boost::next(pars.begin(), startpit),
 563                                 boost::next(pars.begin(), endpit + 1));
 564
 565         // Remove the end of the last paragraph; afterwards, remove the
 566         // beginning of the first paragraph. Keep this order - there may only
 567         // be one paragraph!  Do not track deletions here; this is an internal
 568         // action not visible to the user
 569
 570         Paragraph & back = copy_pars.back();
 571         back.eraseChars(end, back.size(), false);
 572         Paragraph & front = copy_pars.front();
 573         front.eraseChars(0, start, false);
 574
 575         ParagraphList::iterator it = copy_pars.begin();
 576         ParagraphList::iterator it_end = copy_pars.end();
 577
 578         for (; it != it_end; ++it) {
 579                 // Since we have a copy of the paragraphs, the insets
 580                 // do not have a proper buffer reference. It makes
 581                 // sense to add them temporarily, because the
 582                 // operations below depend on that (acceptChanges included).
 583                 it->setBuffer(const_cast<Buffer &>(buf));
 584                 // PassThru paragraphs have the Language
 585                 // latex_language. This is invalid for others, so we
 586                 // need to change it to the buffer language.
 587                 if (it->isPassThru())
 588                         it->changeLanguage(buf.params(),
 589                                            latex_language, buf.language());
 590         }
 591
 592         // do not copy text (also nested in insets) which is marked as
 593         // deleted, unless the whole selection was deleted
 594         if (!isFullyDeleted(copy_pars))
 595                 acceptChanges(copy_pars, buf.params());
 596         else
 597                 rejectChanges(copy_pars, buf.params());
 598
 599
 600         // do some final cleanup now, to make sure that the paragraphs
 601         // are not linked to something else.
 602         it = copy_pars.begin();
 603         for (; it != it_end; ++it) {
 604                 it->setBuffer(*static_cast<Buffer *>(0));
 605                 it->setInsetOwner(0);
 606         }
 607
 608         cutstack.push(make_pair(copy_pars, dc));
 609 }
 610
 611 } // namespace anon
 612
 613
 614
 615
 616 namespace cap {
 617
 618 void region(CursorSlice const & i1, CursorSlice const & i2,
 619             Inset::row_type & r1, Inset::row_type & r2,
 620             Inset::col_type & c1, Inset::col_type & c2)
 621 {
 622         Inset & p = i1.inset();
 623         c1 = p.col(i1.idx());
 624         c2 = p.col(i2.idx());
 625         if (c1 > c2)
 626                 swap(c1, c2);
 627         r1 = p.row(i1.idx());
 628         r2 = p.row(i2.idx());
 629         if (r1 > r2)
 630                 swap(r1, r2);
 631 }
 632
 633
 634 docstring grabAndEraseSelection(Cursor & cur)
 635 {
 636         if (!cur.selection())
 637                 return docstring();
 638         docstring res = grabSelection(cur);
 639         eraseSelection(cur);
 640         return res;
 641 }
 642
 643
 644 bool reduceSelectionToOneCell(Cursor & cur)
 645 {
 646         if (!cur.selection() || !cur.inMathed())
 647                 return false;
 648
 649         CursorSlice i1 = cur.selBegin();
 650         CursorSlice i2 = cur.selEnd();
 651         if (!i1.inset().asInsetMath())
 652                 return false;
 653
 654         // the easy case: do nothing if only one cell is selected
 655         if (i1.idx() == i2.idx())
 656                 return true;
 657
 658         cur.top().pos() = 0;
 659         cur.resetAnchor();
 660         cur.top().pos() = cur.top().lastpos();
 661
 662         return true;
 663 }
 664
 665
 666 bool multipleCellsSelected(Cursor const & cur)
 667 {
 668         if (!cur.selection() || !cur.inMathed())
 669                 return false;
 670
 671         CursorSlice i1 = cur.selBegin();
 672         CursorSlice i2 = cur.selEnd();
 673         if (!i1.inset().asInsetMath())
 674                 return false;
 675
 676         if (i1.idx() == i2.idx())
 677                 return false;
 678
 679         return true;
 680 }
 681
 682
 683 void switchBetweenClasses(DocumentClassConstPtr oldone,
 684                 DocumentClassConstPtr newone, InsetText & in, ErrorList & errorlist)
 685 {
 686         errorlist.clear();
 687
 688         LBUFERR(!in.paragraphs().empty());
 689         if (oldone == newone)
 690                 return;
 691
 692         DocumentClass const & oldtc = *oldone;
 693         DocumentClass const & newtc = *newone;
 694
 695         // layouts
 696         ParIterator it = par_iterator_begin(in);
 697         ParIterator end = par_iterator_end(in);
 698         // for remembering which layouts we've had to add
 699         set<docstring> newlayouts;
 700         for (; it != end; ++it) {
 701                 docstring const name = it->layout().name();
 702
 703                 // the pasted text will keep their own layout name. If this layout does
 704                 // not exist in the new document, it will behave like a standard layout.
 705                 bool const added_one = newtc.addLayoutIfNeeded(name);
 706                 if (added_one)
 707                         newlayouts.insert(name);
 708
 709                 if (added_one || newlayouts.find(name) != newlayouts.end()) {
 710                         // Warn the user.
 711                         docstring const s = bformat(_("Layout `%1$s' was not found."), name);
 712                         errorlist.push_back(
 713                                 ErrorItem(_("Layout Not Found"), s, it->id(), 0, it->size()));
 714                 }
 715
 716                 if (in.usePlainLayout())
 717                         it->setLayout(newtc.plainLayout());
 718                 else
 719                         it->setLayout(newtc[name]);
 720         }
 721
 722         // character styles
 723         InsetIterator const i_end = inset_iterator_end(in);
 724         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 725                 if (it->lyxCode() != FLEX_CODE)
 726                         // FIXME: Should we verify all InsetCollapsable?
 727                         continue;
 728
 729                 docstring const layoutName = it->layoutName();
 730                 docstring const & n = newone->insetLayout(layoutName).name();
 731                 bool const is_undefined = n.empty() ||
 732                         n == DocumentClass::plainInsetLayout().name();
 733                 if (!is_undefined)
 734                         continue;
 735
 736                 // The flex inset is undefined in newtc
 737                 docstring const oldname = from_utf8(oldtc.name());
 738                 docstring const newname = from_utf8(newtc.name());
 739                 docstring s;
 740                 if (oldname == newname)
 741                         s = bformat(_("Flex inset %1$s is undefined after "
 742                                 "reloading `%2$s' layout."), layoutName, oldname);
 743                 else
 744                         s = bformat(_("Flex inset %1$s is undefined because of "
 745                                 "conversion from `%2$s' layout to `%3$s'."),
 746                                 layoutName, oldname, newname);
 747                 // To warn the user that something had to be done.
 748                 errorlist.push_back(ErrorItem(
 749                                 _("Undefined flex inset"),
 750                                 s, it.paragraph().id(), it.pos(), it.pos() + 1));
 751         }
 752 }
 753
 754
 755 vector<docstring> availableSelections(Buffer const * buf)
 756 {
 757         vector<docstring> selList;
 758         if (!buf)
 759                 return selList;
 760
 761         CutStack::const_iterator cit = theCuts.begin();
 762         CutStack::const_iterator end = theCuts.end();
 763         for (; cit != end; ++cit) {
 764                 // we do not use cit-> here because gcc 2.9x does not
 765                 // like it (JMarc)
 766                 ParagraphList const & pars = (*cit).first;
 767                 docstring asciiSel;
 768                 ParagraphList::const_iterator pit = pars.begin();
 769                 ParagraphList::const_iterator pend = pars.end();
 770                 for (; pit != pend; ++pit) {
 771                         Paragraph par(*pit, 0, 26);
 772                         // adapt paragraph to current buffer.
 773                         par.setBuffer(const_cast<Buffer &>(*buf));
 774                         asciiSel += par.asString(AS_STR_INSETS);
 775                         if (asciiSel.size() > 25) {
 776                                 asciiSel.replace(22, docstring::npos,
 777                                                  from_ascii("..."));
 778                                 break;
 779                         }
 780                 }
 781
 782                 selList.push_back(asciiSel);
 783         }
 784
 785         return selList;
 786 }
 787
 788
 789 size_type numberOfSelections()
 790 {
 791         return theCuts.size();
 792 }
 793
 794
 795 void cutSelection(Cursor & cur, bool doclear, bool realcut)
 796 {
 797         // This doesn't make sense, if there is no selection
 798         if (!cur.selection())
 799                 return;
 800
 801         // OK, we have a selection. This is always between cur.selBegin()
 802         // and cur.selEnd()
 803
 804         if (cur.inTexted()) {
 805                 Text * text = cur.text();
 806                 LBUFERR(text);
 807
 808                 saveSelection(cur);
 809
 810                 // make sure that the depth behind the selection are restored, too
 811                 cur.recordUndoSelection();
 812                 pit_type begpit = cur.selBegin().pit();
 813                 pit_type endpit = cur.selEnd().pit();
 814
 815                 int endpos = cur.selEnd().pos();
 816
 817                 BufferParams const & bp = cur.buffer()->params();
 818                 if (realcut) {
 819                         copySelectionHelper(*cur.buffer(),
 820                                 *text,
 821                                 begpit, endpit,
 822                                 cur.selBegin().pos(), endpos,
 823                                 bp.documentClassPtr(), theCuts);
 824                         // Stuff what we got on the clipboard.
 825                         // Even if there is no selection.
 826                         putClipboard(theCuts[0].first, theCuts[0].second,
 827                                 cur.selectionAsString(true));
 828                 }
 829
 830                 if (begpit != endpit)
 831                         cur.screenUpdateFlags(Update::Force | Update::FitCursor);
 832
 833                 boost::tie(endpit, endpos) =
 834                         eraseSelectionHelper(bp,
 835                                 text->paragraphs(),
 836                                 begpit, endpit,
 837                                 cur.selBegin().pos(), endpos);
 838
 839                 // cutSelection can invalidate the cursor so we need to set
 840                 // it anew. (Lgb)
 841                 // we prefer the end for when tracking changes
 842                 cur.pos() = endpos;
 843                 cur.pit() = endpit;
 844
 845                 // sometimes necessary
 846                 if (doclear
 847                         && text->paragraphs()[begpit].stripLeadingSpaces(bp.trackChanges))
 848                         cur.fixIfBroken();
 849
 850                 // need a valid cursor. (Lgb)
 851                 cur.clearSelection();
 852
 853                 // After a cut operation, we must make sure that the Buffer is updated
 854                 // because some further operation might need updated label information for
 855                 // example. So we cannot just use "cur.forceBufferUpdate()" here.
 856                 // This fixes #7071.
 857                 cur.buffer()->updateBuffer();
 858
 859                 // tell tabular that a recent copy happened
 860                 dirtyTabularStack(false);
 861         }
 862
 863         if (cur.inMathed()) {
 864                 if (cur.selBegin().idx() != cur.selEnd().idx()) {
 865                         // The current selection spans more than one cell.
 866                         // Record all cells
 867                         cur.recordUndoInset();
 868                 } else {
 869                         // Record only the current cell to avoid a jumping
 870                         // cursor after undo
 871                         cur.recordUndo();
 872                 }
 873                 if (realcut)
 874                         copySelection(cur);
 875                 eraseSelection(cur);
 876         }
 877 }
 878
 879
 880 void copySelection(Cursor const & cur)
 881 {
 882         copySelection(cur, cur.selectionAsString(true));
 883 }
 884
 885
 886 void copyInset(Cursor const & cur, Inset * inset, docstring const & plaintext)
 887 {
 888         ParagraphList pars;
 889         Paragraph par;
 890         BufferParams const & bp = cur.buffer()->params();
 891         par.setLayout(bp.documentClass().plainLayout());
 892         par.insertInset(0, inset, Change(Change::UNCHANGED));
 893         pars.push_back(par);
 894         theCuts.push(make_pair(pars, bp.documentClassPtr()));
 895
 896         // stuff the selection onto the X clipboard, from an explicit copy request
 897         putClipboard(theCuts[0].first, theCuts[0].second, plaintext);
 898 }
 899
 900
 901 namespace {
 902
 903 void copySelectionToStack(Cursor const & cur, CutStack & cutstack)
 904 {
 905         // this doesn't make sense, if there is no selection
 906         if (!cur.selection())
 907                 return;
 908
 909         // copySelection can not yet handle the case of cross idx selection
 910         if (cur.selBegin().idx() != cur.selEnd().idx())
 911                 return;
 912
 913         if (cur.inTexted()) {
 914                 Text * text = cur.text();
 915                 LBUFERR(text);
 916                 // ok we have a selection. This is always between cur.selBegin()
 917                 // and sel_end cursor
 918
 919                 // copy behind a space if there is one
 920                 ParagraphList & pars = text->paragraphs();
 921                 pos_type pos = cur.selBegin().pos();
 922                 pit_type par = cur.selBegin().pit();
 923                 while (pos < pars[par].size() &&
 924                        pars[par].isLineSeparator(pos) &&
 925                        (par != cur.selEnd().pit() || pos < cur.selEnd().pos()))
 926                         ++pos;
 927
 928                 copySelectionHelper(*cur.buffer(), *text, par, cur.selEnd().pit(),
 929                         pos, cur.selEnd().pos(),
 930                         cur.buffer()->params().documentClassPtr(), cutstack);
 931
 932                 // Reset the dirty_tabular_stack_ flag only when something
 933                 // is copied to the clipboard (not to the selectionBuffer).
 934                 if (&cutstack == &theCuts)
 935                         dirtyTabularStack(false);
 936         }
 937
 938         if (cur.inMathed()) {
 939                 //lyxerr << "copySelection in mathed" << endl;
 940                 ParagraphList pars;
 941                 Paragraph par;
 942                 BufferParams const & bp = cur.buffer()->params();
 943                 // FIXME This should be the plain layout...right?
 944                 par.setLayout(bp.documentClass().plainLayout());
 945                 par.insert(0, grabSelection(cur), Font(), Change(Change::UNCHANGED));
 946                 pars.push_back(par);
 947                 cutstack.push(make_pair(pars, bp.documentClassPtr()));
 948         }
 949 }
 950
 951 }
 952
 953
 954 void copySelectionToStack()
 955 {
 956         if (!selectionBuffer.empty())
 957                 theCuts.push(selectionBuffer[0]);
 958 }
 959
 960
 961 void copySelection(Cursor const & cur, docstring const & plaintext)
 962 {
 963         // In tablemode, because copy and paste actually use special table stack
 964         // we do not attempt to get selected paragraphs under cursor. Instead, a
 965         // paragraph with the plain text version is generated so that table cells
 966         // can be pasted as pure text somewhere else.
 967         if (cur.selBegin().idx() != cur.selEnd().idx()) {
 968                 ParagraphList pars;
 969                 Paragraph par;
 970                 BufferParams const & bp = cur.buffer()->params();
 971                 par.setLayout(bp.documentClass().plainLayout());
 972                 par.insert(0, plaintext, Font(), Change(Change::UNCHANGED));
 973                 pars.push_back(par);
 974                 theCuts.push(make_pair(pars, bp.documentClassPtr()));
 975         } else {
 976                 copySelectionToStack(cur, theCuts);
 977         }
 978
 979         // stuff the selection onto the X clipboard, from an explicit copy request
 980         putClipboard(theCuts[0].first, theCuts[0].second, plaintext);
 981 }
 982
 983
 984 void saveSelection(Cursor const & cur)
 985 {
 986         // This function is called, not when a selection is formed, but when
 987         // a selection is cleared. Therefore, multiple keyboard selection
 988         // will not repeatively trigger this function (bug 3877).
 989         if (cur.selection()
 990             && cur.selBegin() == cur.bv().cursor().selBegin()
 991             && cur.selEnd() == cur.bv().cursor().selEnd()) {
 992                 LYXERR(Debug::SELECTION, "saveSelection: '" << cur.selectionAsString(true) << "'");
 993                 copySelectionToStack(cur, selectionBuffer);
 994         }
 995 }
 996
 997
 998 bool selection()
 999 {
1000         return !selectionBuffer.empty();
1001 }
1002
1003
1004 void clearSelection()
1005 {
1006         selectionBuffer.clear();
1007 }
1008
1009
1010 void clearCutStack()
1011 {
1012         theCuts.clear();
1013 }
1014
1015
1016 docstring selection(size_t sel_index)
1017 {
1018         return sel_index < theCuts.size()
1019                 ? theCuts[sel_index].first.back().asString(AS_STR_INSETS | AS_STR_NEWLINES)
1020                 : docstring();
1021 }
1022
1023
1024 void pasteParagraphList(Cursor & cur, ParagraphList const & parlist,
1025                         DocumentClassConstPtr docclass, ErrorList & errorList)
1026 {
1027         if (cur.inTexted()) {
1028                 Text * text = cur.text();
1029                 LBUFERR(text);
1030
1031                 PasteReturnValue prv =
1032                         pasteSelectionHelper(cur, parlist, docclass, errorList);
1033                 if (prv.needupdate)
1034                         cur.forceBufferUpdate();
1035                 cur.clearSelection();
1036                 text->setCursor(cur, prv.par, prv.pos);
1037         }
1038
1039         // mathed is handled in InsetMathNest/InsetMathGrid
1040         LATTEST(!cur.inMathed());
1041 }
1042
1043
1044 void pasteFromStack(Cursor & cur, ErrorList & errorList, size_t sel_index)
1045 {
1046         // this does not make sense, if there is nothing to paste
1047         if (!checkPastePossible(sel_index))
1048                 return;
1049
1050         cur.recordUndo();
1051         pasteParagraphList(cur, theCuts[sel_index].first,
1052                            theCuts[sel_index].second, errorList);
1053 }
1054
1055
1056 void pasteClipboardText(Cursor & cur, ErrorList & errorList, bool asParagraphs,
1057                         Clipboard::TextType type)
1058 {
1059         // Use internal clipboard if it is the most recent one
1060         // This overrides asParagraphs and type on purpose!
1061         if (theClipboard().isInternal()) {
1062                 pasteFromStack(cur, errorList, 0);
1063                 return;
1064         }
1065
1066         // First try LyX format
1067         if ((type == Clipboard::LyXTextType ||
1068              type == Clipboard::LyXOrPlainTextType ||
1069              type == Clipboard::AnyTextType) &&
1070             theClipboard().hasTextContents(Clipboard::LyXTextType)) {
1071                 string lyx = theClipboard().getAsLyX();
1072                 if (!lyx.empty()) {
1073                         // For some strange reason gcc 3.2 and 3.3 do not accept
1074                         // Buffer buffer(string(), false);
1075                         Buffer buffer("", false);
1076                         buffer.setUnnamed(true);
1077                         if (buffer.readString(lyx)) {
1078                                 cur.recordUndo();
1079                                 pasteParagraphList(cur, buffer.paragraphs(),
1080                                         buffer.params().documentClassPtr(), errorList);
1081                                 return;
1082                         }
1083                 }
1084         }
1085
1086         // Then try TeX and HTML
1087         Clipboard::TextType types[2] = {Clipboard::HtmlTextType, Clipboard::LaTeXTextType};
1088         string names[2] = {"html", "latex"};
1089         for (int i = 0; i < 2; ++i) {
1090                 if (type != types[i] && type != Clipboard::AnyTextType)
1091                         continue;
1092                 bool available = theClipboard().hasTextContents(types[i]);
1093
1094                 // If a specific type was explicitly requested, try to
1095                 // interpret plain text: The user told us that the clipboard
1096                 // contents is in the desired format
1097                 if (!available && type == types[i]) {
1098                         types[i] = Clipboard::PlainTextType;
1099                         available = theClipboard().hasTextContents(types[i]);
1100                 }
1101
1102                 if (available) {
1103                         docstring text = theClipboard().getAsText(types[i]);
1104                         available = !text.empty();
1105                         if (available) {
1106                                 // For some strange reason gcc 3.2 and 3.3 do not accept
1107                                 // Buffer buffer(string(), false);
1108                                 Buffer buffer("", false);
1109                                 buffer.setUnnamed(true);
1110                                 if (buffer.importString(names[i], text, errorList)) {
1111                                         cur.recordUndo();
1112                                         pasteParagraphList(cur, buffer.paragraphs(),
1113                                                 buffer.params().documentClassPtr(), errorList);
1114                                         return;
1115                                 }
1116                         }
1117                 }
1118         }
1119
1120         // Then try plain text
1121         docstring const text = theClipboard().getAsText(Clipboard::PlainTextType);
1122         if (text.empty())
1123                 return;
1124         cur.recordUndo();
1125         if (asParagraphs)
1126                 cur.text()->insertStringAsParagraphs(cur, text, cur.current_font);
1127         else
1128                 cur.text()->insertStringAsLines(cur, text, cur.current_font);
1129 }
1130
1131
1132 void pasteSimpleText(Cursor & cur, bool asParagraphs)
1133 {
1134         docstring text;
1135         // Use internal clipboard if it is the most recent one
1136         if (theClipboard().isInternal()) {
1137                 if (!checkPastePossible(0))
1138                         return;
1139
1140                 ParagraphList const & pars = theCuts[0].first;
1141                 ParagraphList::const_iterator it = pars.begin();
1142                 for (; it != pars.end(); ++it) {
1143                         if (it != pars.begin())
1144                                 text += "\n";
1145                         text += (*it).asString();
1146                 }
1147                 asParagraphs = false;
1148         } else {
1149                 // Then try plain text
1150                 text = theClipboard().getAsText(Clipboard::PlainTextType);
1151         }
1152
1153         if (text.empty())
1154                 return;
1155
1156         cur.recordUndo();
1157         cutSelection(cur, true, false);
1158         if (asParagraphs)
1159                 cur.text()->insertStringAsParagraphs(cur, text, cur.current_font);
1160         else
1161                 cur.text()->insertStringAsLines(cur, text, cur.current_font);
1162 }
1163
1164
1165 void pasteClipboardGraphics(Cursor & cur, ErrorList & /* errorList */,
1166                             Clipboard::GraphicsType preferedType)
1167 {
1168         LASSERT(theClipboard().hasGraphicsContents(preferedType), return);
1169
1170         // get picture from clipboard
1171         FileName filename = theClipboard().getAsGraphics(cur, preferedType);
1172         if (filename.empty())
1173                 return;
1174
1175         // create inset for graphic
1176         InsetGraphics * inset = new InsetGraphics(cur.buffer());
1177         InsetGraphicsParams params;
1178         params.filename = support::DocFileName(filename.absFileName(), false);
1179         inset->setParams(params);
1180         cur.recordUndo();
1181         cur.insert(inset);
1182 }
1183
1184
1185 void pasteSelection(Cursor & cur, ErrorList & errorList)
1186 {
1187         if (selectionBuffer.empty())
1188                 return;
1189         cur.recordUndo();
1190         pasteParagraphList(cur, selectionBuffer[0].first,
1191                            selectionBuffer[0].second, errorList);
1192 }
1193
1194
1195 void replaceSelectionWithString(Cursor & cur, docstring const & str)
1196 {
1197         cur.recordUndo();
1198         DocIterator selbeg = cur.selectionBegin();
1199
1200         // Get font setting before we cut, we need a copy here, not a bare reference.
1201         Font const font =
1202                 selbeg.paragraph().getFontSettings(cur.buffer()->params(), selbeg.pos());
1203
1204         // Insert the new string
1205         pos_type pos = cur.selEnd().pos();
1206         Paragraph & par = cur.selEnd().paragraph();
1207         docstring::const_iterator cit = str.begin();
1208         docstring::const_iterator end = str.end();
1209         for (; cit != end; ++cit, ++pos)
1210                 par.insertChar(pos, *cit, font, cur.buffer()->params().trackChanges);
1211
1212         // Cut the selection
1213         cutSelection(cur, true, false);
1214 }
1215
1216
1217 void replaceSelection(Cursor & cur)
1218 {
1219         if (cur.selection())
1220                 cutSelection(cur, true, false);
1221 }
1222
1223
1224 void eraseSelection(Cursor & cur)
1225 {
1226         //lyxerr << "cap::eraseSelection begin: " << cur << endl;
1227         CursorSlice const & i1 = cur.selBegin();
1228         CursorSlice const & i2 = cur.selEnd();
1229         if (i1.inset().asInsetMath()) {
1230                 saveSelection(cur);
1231                 cur.top() = i1;
1232                 if (i1.idx() == i2.idx()) {
1233                         i1.cell().erase(i1.pos(), i2.pos());
1234                         // We may have deleted i1.cell(cur.pos()).
1235                         // Make sure that pos is valid.
1236                         if (cur.pos() > cur.lastpos())
1237                                 cur.pos() = cur.lastpos();
1238                 } else {
1239                         InsetMath * p = i1.asInsetMath();
1240                         Inset::row_type r1, r2;
1241                         Inset::col_type c1, c2;
1242                         region(i1, i2, r1, r2, c1, c2);
1243                         for (Inset::row_type row = r1; row <= r2; ++row)
1244                                 for (Inset::col_type col = c1; col <= c2; ++col)
1245                                         p->cell(p->index(row, col)).clear();
1246                         // We've deleted the whole cell. Only pos 0 is valid.
1247                         cur.pos() = 0;
1248                 }
1249                 // need a valid cursor. (Lgb)
1250                 cur.clearSelection();
1251         } else {
1252                 lyxerr << "can't erase this selection 1" << endl;
1253         }
1254         //lyxerr << "cap::eraseSelection end: " << cur << endl;
1255 }
1256
1257
1258 void selDel(Cursor & cur)
1259 {
1260         //lyxerr << "cap::selDel" << endl;
1261         if (cur.selection())
1262                 eraseSelection(cur);
1263 }
1264
1265
1266 void selClearOrDel(Cursor & cur)
1267 {
1268         //lyxerr << "cap::selClearOrDel" << endl;
1269         if (lyxrc.auto_region_delete)
1270                 selDel(cur);
1271         else
1272                 cur.setSelection(false);
1273 }
1274
1275
1276 docstring grabSelection(Cursor const & cur)
1277 {
1278         if (!cur.selection())
1279                 return docstring();
1280
1281 #if 0
1282         // grab selection by glueing multiple cells together. This is not what
1283         // we want because selections spanning multiple cells will get "&" and "\\"
1284         // seperators.
1285         ostringstream os;
1286         for (DocIterator dit = cur.selectionBegin();
1287              dit != cur.selectionEnd(); dit.forwardPos())
1288                 os << asString(dit.cell());
1289         return os.str();
1290 #endif
1291
1292         CursorSlice i1 = cur.selBegin();
1293         CursorSlice i2 = cur.selEnd();
1294
1295         if (i1.idx() == i2.idx()) {
1296                 if (i1.inset().asInsetMath()) {
1297                         MathData::const_iterator it = i1.cell().begin();
1298                         Buffer * buf = cur.buffer();
1299                         return asString(MathData(buf, it + i1.pos(), it + i2.pos()));
1300                 } else {
1301                         return from_ascii("unknown selection 1");
1302                 }
1303         }
1304
1305         Inset::row_type r1, r2;
1306         Inset::col_type c1, c2;
1307         region(i1, i2, r1, r2, c1, c2);
1308
1309         docstring data;
1310         if (i1.inset().asInsetMath()) {
1311                 for (Inset::row_type row = r1; row <= r2; ++row) {
1312                         if (row > r1)
1313                                 data += "\\\\";
1314                         for (Inset::col_type col = c1; col <= c2; ++col) {
1315                                 if (col > c1)
1316                                         data += '&';
1317                                 data += asString(i1.asInsetMath()->
1318                                         cell(i1.asInsetMath()->index(row, col)));
1319                         }
1320                 }
1321         } else {
1322                 data = from_ascii("unknown selection 2");
1323         }
1324         return data;
1325 }
1326
1327
1328 void dirtyTabularStack(bool b)
1329 {
1330         dirty_tabular_stack_ = b;
1331 }
1332
1333
1334 bool tabularStackDirty()
1335 {
1336         return dirty_tabular_stack_;
1337 }
1338
1339
1340 } // namespace cap
1341 } // namespace lyx