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 #include "support/TempFile.h"
  64
  65 #include "frontends/alert.h"
  66 #include "frontends/Clipboard.h"
  67 #include "frontends/Selection.h"
  68
  69 #include <boost/tuple/tuple.hpp>
  70 #include <boost/next_prior.hpp>
  71
  72 #include <string>
  73
  74 using namespace std;
  75 using namespace lyx::support;
  76 using lyx::frontend::Clipboard;
  77
  78 namespace lyx {
  79
  80 namespace {
  81
  82 typedef pair<pit_type, int> PitPosPair;
  83
  84 typedef limited_stack<pair<ParagraphList, DocumentClassConstPtr> > CutStack;
  85
  86 CutStack theCuts(10);
  87 // persistent selection, cleared until the next selection
  88 CutStack selectionBuffer(1);
  89
  90 // store whether the tabular stack is newer than the normal copy stack
  91 // FIXME: this is a workaround for bug 1919. Should be removed for 1.5,
  92 // when we (hopefully) have a one-for-all paste mechanism.
  93 bool dirty_tabular_stack_ = false;
  94
  95
  96 bool checkPastePossible(int index)
  97 {
  98         return size_t(index) < theCuts.size() && !theCuts[index].first.empty();
  99 }
 100
 101
 102 struct PasteReturnValue {
 103         PasteReturnValue(pit_type r_par, pos_type r_pos, bool r_nu) :
 104           par(r_par), pos(r_pos), needupdate(r_nu)
 105         {}
 106
 107         pit_type par;
 108         pos_type pos;
 109         bool needupdate;
 110 };
 111
 112 PasteReturnValue
 113 pasteSelectionHelper(DocIterator const & cur, ParagraphList const & parlist,
 114                      DocumentClassConstPtr oldDocClass, Buffer * tmpbuffer,
 115                      ErrorList & errorlist)
 116 {
 117         Buffer const & buffer = *cur.buffer();
 118         pit_type pit = cur.pit();
 119         pos_type pos = cur.pos();
 120         bool need_update = false;
 121         InsetText * target_inset = cur.inset().asInsetText();
 122         if (!target_inset) {
 123                 InsetTabular * it = cur.inset().asInsetTabular();
 124                 target_inset = it? it->cell(cur.idx())->asInsetText() : 0;
 125         }
 126         LASSERT(target_inset, return PasteReturnValue(pit, pos, need_update));
 127         ParagraphList & pars = target_inset->paragraphs();
 128
 129         if (parlist.empty())
 130                 return PasteReturnValue(pit, pos, need_update);
 131
 132         BOOST_ASSERT (pos <= pars[pit].size());
 133
 134         // Make a copy of the CaP paragraphs.
 135         ParagraphList insertion = parlist;
 136         DocumentClassConstPtr newDocClass = buffer.params().documentClassPtr();
 137
 138         // Now remove all out of the pars which is NOT allowed in the
 139         // new environment and set also another font if that is required.
 140
 141         // Convert newline to paragraph break in ParbreakIsNewline
 142         if (target_inset->getLayout().parbreakIsNewline()
 143             || pars[pit].layout().parbreak_is_newline) {
 144                 for (size_t i = 0; i != insertion.size(); ++i) {
 145                         for (pos_type j = 0; j != insertion[i].size(); ++j) {
 146                                 if (insertion[i].isNewline(j)) {
 147                                         // do not track deletion of newline
 148                                         insertion[i].eraseChar(j, false);
 149                                         insertion[i].setInsetOwner(target_inset);
 150                                         breakParagraphConservative(
 151                                                         buffer.params(),
 152                                                         insertion, i, j);
 153                                         break;
 154                                 }
 155                         }
 156                 }
 157         }
 158
 159         // set the paragraphs to plain layout if necessary
 160         if (cur.inset().usePlainLayout()) {
 161                 bool forcePlainLayout = cur.inset().forcePlainLayout();
 162                 Layout const & plainLayout = newDocClass->plainLayout();
 163                 Layout const & defaultLayout = newDocClass->defaultLayout();
 164                 ParagraphList::iterator const end = insertion.end();
 165                 ParagraphList::iterator par = insertion.begin();
 166                 for (; par != end; ++par) {
 167                         Layout const & parLayout = par->layout();
 168                         if (forcePlainLayout || parLayout == defaultLayout)
 169                                 par->setLayout(plainLayout);
 170                 }
 171         } else { // check if we need to reset from plain layout
 172                 Layout const & defaultLayout = newDocClass->defaultLayout();
 173                 Layout const & plainLayout = newDocClass->plainLayout();
 174                 ParagraphList::iterator const end = insertion.end();
 175                 ParagraphList::iterator par = insertion.begin();
 176                 for (; par != end; ++par) {
 177                         Layout const & parLayout = par->layout();
 178                         if (parLayout == plainLayout)
 179                                 par->setLayout(defaultLayout);
 180                 }
 181         }
 182
 183         InsetText in(cur.buffer());
 184         // Make sure there is no class difference.
 185         in.paragraphs().clear();
 186         // This works without copying any paragraph data because we have
 187         // a specialized swap method for ParagraphList. This is important
 188         // since we store pointers to insets at some places and we don't
 189         // want to invalidate them.
 190         insertion.swap(in.paragraphs());
 191         cap::switchBetweenClasses(oldDocClass, newDocClass, in, errorlist);
 192         insertion.swap(in.paragraphs());
 193
 194         ParagraphList::iterator tmpbuf = insertion.begin();
 195         int depth_delta = pars[pit].params().depth() - tmpbuf->params().depth();
 196
 197         depth_type max_depth = pars[pit].getMaxDepthAfter();
 198
 199         for (; tmpbuf != insertion.end(); ++tmpbuf) {
 200                 // If we have a negative jump so that the depth would
 201                 // go below 0 depth then we have to redo the delta to
 202                 // this new max depth level so that subsequent
 203                 // paragraphs are aligned correctly to this paragraph
 204                 // at level 0.
 205                 if (int(tmpbuf->params().depth()) + depth_delta < 0)
 206                         depth_delta = 0;
 207
 208                 // Set the right depth so that we are not too deep or shallow.
 209                 tmpbuf->params().depth(tmpbuf->params().depth() + depth_delta);
 210                 if (tmpbuf->params().depth() > max_depth)
 211                         tmpbuf->params().depth(max_depth);
 212
 213                 // Set max_depth for the next paragraph
 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().track_changes ?
 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                         if (tmpbuffer) {
 356                                 // This is for a temporary buffer, so simply create the branch.
 357                                 // Must not use lyx::dispatch(), since tmpbuffer has no view.
 358                                 DispatchResult dr;
 359                                 tmpbuffer->dispatch(FuncRequest(LFUN_BRANCH_ADD, name), dr);
 360                         } else {
 361                                 docstring text = bformat(
 362                                         _("The pasted branch \"%1$s\" is undefined.\n"
 363                                           "Do you want to add it to the document's branch list?"),
 364                                         name);
 365                                 if (frontend::Alert::prompt(_("Unknown branch"),
 366                                           text, 0, 1, _("&Add"), _("&Don't Add")) != 0)
 367                                         break;
 368                                 lyx::dispatch(FuncRequest(LFUN_BRANCH_ADD, name));
 369                         }
 370                         // We need to update the list of branches.
 371                         need_update = true;
 372                         break;
 373                 }
 374
 375                 default:
 376                         break; // nothing
 377                 }
 378         }
 379         insertion.swap(in.paragraphs());
 380
 381         // Split the paragraph for inserting the buf if necessary.
 382         if (!empty)
 383                 breakParagraphConservative(buffer.params(), pars, pit, pos);
 384
 385         // Paste it!
 386         if (empty) {
 387                 pars.insert(boost::next(pars.begin(), pit),
 388                             insertion.begin(),
 389                             insertion.end());
 390
 391                 // merge the empty par with the last par of the insertion
 392                 mergeParagraph(buffer.params(), pars,
 393                                pit + insertion.size() - 1);
 394         } else {
 395                 pars.insert(boost::next(pars.begin(), pit + 1),
 396                             insertion.begin(),
 397                             insertion.end());
 398
 399                 // merge the first par of the insertion with the current par
 400                 mergeParagraph(buffer.params(), pars, pit);
 401         }
 402
 403         // Store the new cursor position.
 404         pit_type last_paste = pit + insertion.size() - 1;
 405         pit_type startpit = pit;
 406         pit = last_paste;
 407         pos = pars[last_paste].size();
 408
 409         // FIXME Should we do it here, or should we let updateBuffer() do it?
 410         // Set paragraph buffers. It's important to do this right away
 411         // before something calls Inset::buffer() and causes a crash.
 412         for (pit_type p = startpit; p <= pit; ++p)
 413                 pars[p].setBuffer(const_cast<Buffer &>(buffer));
 414
 415         // Join (conditionally) last pasted paragraph with next one, i.e.,
 416         // the tail of the spliced document paragraph
 417         if (!empty && last_paste + 1 != pit_type(pars.size())) {
 418                 if (pars[last_paste + 1].hasSameLayout(pars[last_paste])) {
 419                         mergeParagraph(buffer.params(), pars, last_paste);
 420                 } else if (pars[last_paste + 1].empty()) {
 421                         pars[last_paste + 1].makeSameLayout(pars[last_paste]);
 422                         mergeParagraph(buffer.params(), pars, last_paste);
 423                 } else if (pars[last_paste].empty()) {
 424                         pars[last_paste].makeSameLayout(pars[last_paste + 1]);
 425                         mergeParagraph(buffer.params(), pars, last_paste);
 426                 } else {
 427                         pars[last_paste + 1].stripLeadingSpaces(buffer.params().track_changes);
 428                         ++last_paste;
 429                 }
 430         }
 431
 432         return PasteReturnValue(pit, pos, need_update);
 433 }
 434
 435
 436 PitPosPair eraseSelectionHelper(BufferParams const & params,
 437         ParagraphList & pars,
 438         pit_type startpit, pit_type endpit,
 439         int startpos, int endpos)
 440 {
 441         // Start of selection is really invalid.
 442         if (startpit == pit_type(pars.size()) ||
 443             (startpos > pars[startpit].size()))
 444                 return PitPosPair(endpit, endpos);
 445
 446         // Start and end is inside same paragraph
 447         if (endpit == pit_type(pars.size()) || startpit == endpit) {
 448                 endpos -= pars[startpit].eraseChars(startpos, endpos, params.track_changes);
 449                 return PitPosPair(endpit, endpos);
 450         }
 451
 452         for (pit_type pit = startpit; pit != endpit + 1;) {
 453                 pos_type const left  = (pit == startpit ? startpos : 0);
 454                 pos_type right = (pit == endpit ? endpos : pars[pit].size() + 1);
 455                 bool const merge = pars[pit].isMergedOnEndOfParDeletion(params.track_changes);
 456
 457                 // Logically erase only, including the end-of-paragraph character
 458                 pars[pit].eraseChars(left, right, params.track_changes);
 459
 460                 // Separate handling of paragraph break:
 461                 if (merge && pit != endpit &&
 462                     (pit + 1 != endpit
 463                      || pars[pit].hasSameLayout(pars[endpit])
 464                      || pars[endpit].size() == endpos)) {
 465                         if (pit + 1 == endpit)
 466                                 endpos += pars[pit].size();
 467                         mergeParagraph(params, pars, pit);
 468                         --endpit;
 469                 } else
 470                         ++pit;
 471         }
 472
 473         // Ensure legal cursor pos:
 474         endpit = startpit;
 475         endpos = startpos;
 476         return PitPosPair(endpit, endpos);
 477 }
 478
 479
 480 void putClipboard(ParagraphList const & paragraphs,
 481         DocumentClassConstPtr docclass, docstring const & plaintext)
 482 {
 483         // This used to need to be static to avoid a memory leak. It no longer needs
 484         // to be so, but the alternative is to construct a new one of these (with a
 485         // new temporary directory, etc) every time, and then to destroy it. So maybe
 486         // it's worth just keeping this one around.
 487         // FIXME THREAD
 488         static TempFile tempfile("clipboard.internal");
 489         tempfile.setAutoRemove(false);
 490         static Buffer * staticbuffer = theBufferList().newInternalBuffer(
 491                         tempfile.name().absFileName());
 492
 493         // These two things only really need doing the first time.
 494         staticbuffer->setUnnamed(true);
 495         staticbuffer->inset().setBuffer(*staticbuffer);
 496
 497         // Use a clone for the complicated stuff so that we do not need to clean
 498         // up in order to avoid a crash.
 499         Buffer * buffer = staticbuffer->cloneBufferOnly();
 500         LASSERT(buffer, return);
 501
 502         // This needs doing every time.
 503         buffer->params().setDocumentClass(docclass);
 504
 505         // we will use pasteSelectionHelper to copy the paragraphs into the
 506         // temporary Buffer, since it does a lot of things to fix them up.
 507         DocIterator dit = doc_iterator_begin(buffer, &buffer->inset());
 508         ErrorList el;
 509         pasteSelectionHelper(dit, paragraphs, docclass, buffer, el);
 510
 511         // We don't want to produce images that are not used. Therefore,
 512         // output formulas as MathML. Even if this is not understood by all
 513         // applications, the number that can parse it should go up in the future.
 514         buffer->params().html_math_output = BufferParams::MathML;
 515
 516         // Make sure MarkAsExporting is deleted before buffer is
 517         {
 518                 // The Buffer is being used to export. This is necessary so that the
 519                 // updateMacros call will record the needed information.
 520                 MarkAsExporting mex(buffer);
 521
 522                 buffer->updateBuffer(Buffer::UpdateMaster, OutputUpdate);
 523                 buffer->updateMacros();
 524                 buffer->updateMacroInstances(OutputUpdate);
 525
 526                 // LyX's own format
 527                 string lyx;
 528                 ostringstream oslyx;
 529                 if (buffer->write(oslyx))
 530                         lyx = oslyx.str();
 531
 532                 // XHTML format
 533                 odocstringstream oshtml;
 534                 OutputParams runparams(encodings.fromLyXName("utf8"));
 535                 // We do not need to produce images, etc.
 536                 runparams.dryrun = true;
 537                 // We are not interested in errors (bug 8866)
 538                 runparams.silent = true;
 539                 buffer->writeLyXHTMLSource(oshtml, runparams, Buffer::FullSource);
 540
 541                 theClipboard().put(lyx, oshtml.str(), plaintext);
 542         }
 543
 544         // Save that memory
 545         delete buffer;
 546 }
 547
 548
 549 /// return true if the whole ParagraphList is deleted
 550 static bool isFullyDeleted(ParagraphList const & pars)
 551 {
 552         pit_type const pars_size = static_cast<pit_type>(pars.size());
 553
 554         // check all paragraphs
 555         for (pit_type pit = 0; pit < pars_size; ++pit) {
 556                 if (!pars[pit].empty())   // prevent assertion failure
 557                         if (!pars[pit].isDeleted(0, pars[pit].size()))
 558                                 return false;
 559         }
 560         return true;
 561 }
 562
 563
 564 void copySelectionHelper(Buffer const & buf, Text const & text,
 565         pit_type startpit, pit_type endpit,
 566         int start, int end, DocumentClassConstPtr dc, CutStack & cutstack)
 567 {
 568         ParagraphList const & pars = text.paragraphs();
 569
 570         // In most of these cases, we can try to recover.
 571         LASSERT(0 <= start, start = 0);
 572         LASSERT(start <= pars[startpit].size(), start = pars[startpit].size());
 573         LASSERT(0 <= end, end = 0);
 574         LASSERT(end <= pars[endpit].size(), end = pars[endpit].size());
 575         LASSERT(startpit != endpit || start <= end, return);
 576
 577         // Clone the paragraphs within the selection.
 578         ParagraphList copy_pars(boost::next(pars.begin(), startpit),
 579                                 boost::next(pars.begin(), endpit + 1));
 580
 581         // Remove the end of the last paragraph; afterwards, remove the
 582         // beginning of the first paragraph. Keep this order - there may only
 583         // be one paragraph!  Do not track deletions here; this is an internal
 584         // action not visible to the user
 585
 586         Paragraph & back = copy_pars.back();
 587         back.eraseChars(end, back.size(), false);
 588         Paragraph & front = copy_pars.front();
 589         front.eraseChars(0, start, false);
 590
 591         ParagraphList::iterator it = copy_pars.begin();
 592         ParagraphList::iterator it_end = copy_pars.end();
 593
 594         for (; it != it_end; ++it) {
 595                 // Since we have a copy of the paragraphs, the insets
 596                 // do not have a proper buffer reference. It makes
 597                 // sense to add them temporarily, because the
 598                 // operations below depend on that (acceptChanges included).
 599                 it->setBuffer(const_cast<Buffer &>(buf));
 600                 // PassThru paragraphs have the Language
 601                 // latex_language. This is invalid for others, so we
 602                 // need to change it to the buffer language.
 603                 if (it->isPassThru())
 604                         it->changeLanguage(buf.params(),
 605                                            latex_language, buf.language());
 606         }
 607
 608         // do not copy text (also nested in insets) which is marked as
 609         // deleted, unless the whole selection was deleted
 610         if (!isFullyDeleted(copy_pars))
 611                 acceptChanges(copy_pars, buf.params());
 612         else
 613                 rejectChanges(copy_pars, buf.params());
 614
 615
 616         // do some final cleanup now, to make sure that the paragraphs
 617         // are not linked to something else.
 618         it = copy_pars.begin();
 619         for (; it != it_end; ++it) {
 620                 it->setBuffer(*static_cast<Buffer *>(0));
 621                 it->setInsetOwner(0);
 622         }
 623
 624         cutstack.push(make_pair(copy_pars, dc));
 625 }
 626
 627 } // namespace anon
 628
 629
 630
 631
 632 namespace cap {
 633
 634 void region(CursorSlice const & i1, CursorSlice const & i2,
 635             Inset::row_type & r1, Inset::row_type & r2,
 636             Inset::col_type & c1, Inset::col_type & c2)
 637 {
 638         Inset & p = i1.inset();
 639         c1 = p.col(i1.idx());
 640         c2 = p.col(i2.idx());
 641         if (c1 > c2)
 642                 swap(c1, c2);
 643         r1 = p.row(i1.idx());
 644         r2 = p.row(i2.idx());
 645         if (r1 > r2)
 646                 swap(r1, r2);
 647 }
 648
 649
 650 docstring grabAndEraseSelection(Cursor & cur)
 651 {
 652         if (!cur.selection())
 653                 return docstring();
 654         docstring res = grabSelection(cur);
 655         eraseSelection(cur);
 656         return res;
 657 }
 658
 659
 660 bool reduceSelectionToOneCell(Cursor & cur)
 661 {
 662         if (!cur.selection() || !cur.inMathed())
 663                 return false;
 664
 665         CursorSlice i1 = cur.selBegin();
 666         CursorSlice i2 = cur.selEnd();
 667         if (!i1.inset().asInsetMath())
 668                 return false;
 669
 670         // the easy case: do nothing if only one cell is selected
 671         if (i1.idx() == i2.idx())
 672                 return true;
 673
 674         cur.top().pos() = 0;
 675         cur.resetAnchor();
 676         cur.top().pos() = cur.top().lastpos();
 677
 678         return true;
 679 }
 680
 681
 682 bool multipleCellsSelected(Cursor const & cur)
 683 {
 684         if (!cur.selection() || !cur.inMathed())
 685                 return false;
 686
 687         CursorSlice i1 = cur.selBegin();
 688         CursorSlice i2 = cur.selEnd();
 689         if (!i1.inset().asInsetMath())
 690                 return false;
 691
 692         if (i1.idx() == i2.idx())
 693                 return false;
 694
 695         return true;
 696 }
 697
 698
 699 void switchBetweenClasses(DocumentClassConstPtr oldone,
 700                 DocumentClassConstPtr newone, InsetText & in, ErrorList & errorlist)
 701 {
 702         errorlist.clear();
 703
 704         LBUFERR(!in.paragraphs().empty());
 705         if (oldone == newone)
 706                 return;
 707
 708         DocumentClass const & oldtc = *oldone;
 709         DocumentClass const & newtc = *newone;
 710
 711         // layouts
 712         ParIterator it = par_iterator_begin(in);
 713         ParIterator end = par_iterator_end(in);
 714         // for remembering which layouts we've had to add
 715         set<docstring> newlayouts;
 716         for (; it != end; ++it) {
 717                 docstring const name = it->layout().name();
 718
 719                 // the pasted text will keep their own layout name. If this layout does
 720                 // not exist in the new document, it will behave like a standard layout.
 721                 bool const added_one = newtc.addLayoutIfNeeded(name);
 722                 if (added_one)
 723                         newlayouts.insert(name);
 724
 725                 if (added_one || newlayouts.find(name) != newlayouts.end()) {
 726                         // Warn the user.
 727                         docstring const s = bformat(_("Layout `%1$s' was not found."), name);
 728                         errorlist.push_back(
 729                                 ErrorItem(_("Layout Not Found"), s, it->id(), 0, it->size()));
 730                 }
 731
 732                 if (in.usePlainLayout())
 733                         it->setLayout(newtc.plainLayout());
 734                 else
 735                         it->setLayout(newtc[name]);
 736         }
 737
 738         // character styles
 739         InsetIterator const i_end = inset_iterator_end(in);
 740         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 741                 if (it->lyxCode() != FLEX_CODE)
 742                         // FIXME: Should we verify all InsetCollapsable?
 743                         continue;
 744
 745                 docstring const layoutName = it->layoutName();
 746                 docstring const & n = newone->insetLayout(layoutName).name();
 747                 bool const is_undefined = n.empty() ||
 748                         n == DocumentClass::plainInsetLayout().name();
 749                 if (!is_undefined)
 750                         continue;
 751
 752                 // The flex inset is undefined in newtc
 753                 docstring const oldname = from_utf8(oldtc.name());
 754                 docstring const newname = from_utf8(newtc.name());
 755                 docstring s;
 756                 if (oldname == newname)
 757                         s = bformat(_("Flex inset %1$s is undefined after "
 758                                 "reloading `%2$s' layout."), layoutName, oldname);
 759                 else
 760                         s = bformat(_("Flex inset %1$s is undefined because of "
 761                                 "conversion from `%2$s' layout to `%3$s'."),
 762                                 layoutName, oldname, newname);
 763                 // To warn the user that something had to be done.
 764                 errorlist.push_back(ErrorItem(
 765                                 _("Undefined flex inset"),
 766                                 s, it.paragraph().id(), it.pos(), it.pos() + 1));
 767         }
 768 }
 769
 770
 771 vector<docstring> availableSelections(Buffer const * buf)
 772 {
 773         vector<docstring> selList;
 774         if (!buf)
 775                 return selList;
 776
 777         CutStack::const_iterator cit = theCuts.begin();
 778         CutStack::const_iterator end = theCuts.end();
 779         for (; cit != end; ++cit) {
 780                 // we do not use cit-> here because gcc 2.9x does not
 781                 // like it (JMarc)
 782                 ParagraphList const & pars = (*cit).first;
 783                 docstring asciiSel;
 784                 ParagraphList::const_iterator pit = pars.begin();
 785                 ParagraphList::const_iterator pend = pars.end();
 786                 for (; pit != pend; ++pit) {
 787                         Paragraph par(*pit, 0, 26);
 788                         // adapt paragraph to current buffer.
 789                         par.setBuffer(const_cast<Buffer &>(*buf));
 790                         asciiSel += par.asString(AS_STR_INSETS);
 791                         if (asciiSel.size() > 25) {
 792                                 asciiSel.replace(22, docstring::npos,
 793                                                  from_ascii("..."));
 794                                 break;
 795                         }
 796                 }
 797
 798                 selList.push_back(asciiSel);
 799         }
 800
 801         return selList;
 802 }
 803
 804
 805 size_type numberOfSelections()
 806 {
 807         return theCuts.size();
 808 }
 809
 810
 811 void cutSelection(Cursor & cur, bool doclear, bool realcut)
 812 {
 813         // This doesn't make sense, if there is no selection
 814         if (!cur.selection())
 815                 return;
 816
 817         // OK, we have a selection. This is always between cur.selBegin()
 818         // and cur.selEnd()
 819
 820         if (cur.inTexted()) {
 821                 Text * text = cur.text();
 822                 LBUFERR(text);
 823
 824                 saveSelection(cur);
 825
 826                 // make sure that the depth behind the selection are restored, too
 827                 cur.recordUndoSelection();
 828                 pit_type begpit = cur.selBegin().pit();
 829                 pit_type endpit = cur.selEnd().pit();
 830
 831                 int endpos = cur.selEnd().pos();
 832
 833                 BufferParams const & bp = cur.buffer()->params();
 834                 if (realcut) {
 835                         copySelectionHelper(*cur.buffer(),
 836                                 *text,
 837                                 begpit, endpit,
 838                                 cur.selBegin().pos(), endpos,
 839                                 bp.documentClassPtr(), theCuts);
 840                         // Stuff what we got on the clipboard.
 841                         // Even if there is no selection.
 842                         putClipboard(theCuts[0].first, theCuts[0].second,
 843                                 cur.selectionAsString(true));
 844                 }
 845
 846                 if (begpit != endpit)
 847                         cur.screenUpdateFlags(Update::Force | Update::FitCursor);
 848
 849                 boost::tie(endpit, endpos) =
 850                         eraseSelectionHelper(bp,
 851                                 text->paragraphs(),
 852                                 begpit, endpit,
 853                                 cur.selBegin().pos(), endpos);
 854
 855                 // cutSelection can invalidate the cursor so we need to set
 856                 // it anew. (Lgb)
 857                 // we prefer the end for when tracking changes
 858                 cur.pos() = endpos;
 859                 cur.pit() = endpit;
 860
 861                 // sometimes necessary
 862                 if (doclear
 863                         && text->paragraphs()[begpit].stripLeadingSpaces(bp.track_changes))
 864                         cur.fixIfBroken();
 865
 866                 // need a valid cursor. (Lgb)
 867                 cur.clearSelection();
 868
 869                 // After a cut operation, we must make sure that the Buffer is updated
 870                 // because some further operation might need updated label information for
 871                 // example. So we cannot just use "cur.forceBufferUpdate()" here.
 872                 // This fixes #7071.
 873                 cur.buffer()->updateBuffer();
 874
 875                 // tell tabular that a recent copy happened
 876                 dirtyTabularStack(false);
 877         }
 878
 879         if (cur.inMathed()) {
 880                 if (cur.selBegin().idx() != cur.selEnd().idx()) {
 881                         // The current selection spans more than one cell.
 882                         // Record all cells
 883                         cur.recordUndoInset();
 884                 } else {
 885                         // Record only the current cell to avoid a jumping
 886                         // cursor after undo
 887                         cur.recordUndo();
 888                 }
 889                 if (realcut)
 890                         copySelection(cur);
 891                 eraseSelection(cur);
 892         }
 893 }
 894
 895
 896 void copySelection(Cursor const & cur)
 897 {
 898         copySelection(cur, cur.selectionAsString(true));
 899 }
 900
 901
 902 void copyInset(Cursor const & cur, Inset * inset, docstring const & plaintext)
 903 {
 904         ParagraphList pars;
 905         Paragraph par;
 906         BufferParams const & bp = cur.buffer()->params();
 907         par.setLayout(bp.documentClass().plainLayout());
 908         Font font(inherit_font, bp.language);
 909         par.insertInset(0, inset, font, Change(Change::UNCHANGED));
 910         pars.push_back(par);
 911         theCuts.push(make_pair(pars, bp.documentClassPtr()));
 912
 913         // stuff the selection onto the X clipboard, from an explicit copy request
 914         putClipboard(theCuts[0].first, theCuts[0].second, plaintext);
 915 }
 916
 917
 918 namespace {
 919
 920 void copySelectionToStack(Cursor const & cur, CutStack & cutstack)
 921 {
 922         // this doesn't make sense, if there is no selection
 923         if (!cur.selection())
 924                 return;
 925
 926         // copySelection can not yet handle the case of cross idx selection
 927         if (cur.selBegin().idx() != cur.selEnd().idx())
 928                 return;
 929
 930         if (cur.inTexted()) {
 931                 Text * text = cur.text();
 932                 LBUFERR(text);
 933                 // ok we have a selection. This is always between cur.selBegin()
 934                 // and sel_end cursor
 935
 936                 // copy behind a space if there is one
 937                 ParagraphList & pars = text->paragraphs();
 938                 pos_type pos = cur.selBegin().pos();
 939                 pit_type par = cur.selBegin().pit();
 940                 while (pos < pars[par].size() &&
 941                        pars[par].isLineSeparator(pos) &&
 942                        (par != cur.selEnd().pit() || pos < cur.selEnd().pos()))
 943                         ++pos;
 944
 945                 copySelectionHelper(*cur.buffer(), *text, par, cur.selEnd().pit(),
 946                         pos, cur.selEnd().pos(),
 947                         cur.buffer()->params().documentClassPtr(), cutstack);
 948
 949                 // Reset the dirty_tabular_stack_ flag only when something
 950                 // is copied to the clipboard (not to the selectionBuffer).
 951                 if (&cutstack == &theCuts)
 952                         dirtyTabularStack(false);
 953         }
 954
 955         if (cur.inMathed()) {
 956                 //lyxerr << "copySelection in mathed" << endl;
 957                 ParagraphList pars;
 958                 Paragraph par;
 959                 BufferParams const & bp = cur.buffer()->params();
 960                 // FIXME This should be the plain layout...right?
 961                 par.setLayout(bp.documentClass().plainLayout());
 962                 par.insert(0, grabSelection(cur), Font(), Change(Change::UNCHANGED));
 963                 pars.push_back(par);
 964                 cutstack.push(make_pair(pars, bp.documentClassPtr()));
 965         }
 966 }
 967
 968 }
 969
 970
 971 void copySelectionToStack()
 972 {
 973         if (!selectionBuffer.empty())
 974                 theCuts.push(selectionBuffer[0]);
 975 }
 976
 977
 978 void copySelection(Cursor const & cur, docstring const & plaintext)
 979 {
 980         // In tablemode, because copy and paste actually use special table stack
 981         // we do not attempt to get selected paragraphs under cursor. Instead, a
 982         // paragraph with the plain text version is generated so that table cells
 983         // can be pasted as pure text somewhere else.
 984         if (cur.selBegin().idx() != cur.selEnd().idx()) {
 985                 ParagraphList pars;
 986                 Paragraph par;
 987                 BufferParams const & bp = cur.buffer()->params();
 988                 par.setLayout(bp.documentClass().plainLayout());
 989                 par.insert(0, plaintext, Font(), Change(Change::UNCHANGED));
 990                 pars.push_back(par);
 991                 theCuts.push(make_pair(pars, bp.documentClassPtr()));
 992         } else {
 993                 copySelectionToStack(cur, theCuts);
 994         }
 995
 996         // stuff the selection onto the X clipboard, from an explicit copy request
 997         putClipboard(theCuts[0].first, theCuts[0].second, plaintext);
 998 }
 999
1000
1001 void saveSelection(Cursor const & cur)
1002 {
1003         // This function is called, not when a selection is formed, but when
1004         // a selection is cleared. Therefore, multiple keyboard selection
1005         // will not repeatively trigger this function (bug 3877).
1006         if (cur.selection()
1007             && cur.selBegin() == cur.bv().cursor().selBegin()
1008             && cur.selEnd() == cur.bv().cursor().selEnd()) {
1009                 LYXERR(Debug::SELECTION, "saveSelection: '" << cur.selectionAsString(true) << "'");
1010                 copySelectionToStack(cur, selectionBuffer);
1011         }
1012 }
1013
1014
1015 bool selection()
1016 {
1017         return !selectionBuffer.empty();
1018 }
1019
1020
1021 void clearSelection()
1022 {
1023         selectionBuffer.clear();
1024 }
1025
1026
1027 void clearCutStack()
1028 {
1029         theCuts.clear();
1030 }
1031
1032
1033 docstring selection(size_t sel_index)
1034 {
1035         return sel_index < theCuts.size()
1036                 ? theCuts[sel_index].first.back().asString(AS_STR_INSETS | AS_STR_NEWLINES)
1037                 : docstring();
1038 }
1039
1040
1041 void pasteParagraphList(Cursor & cur, ParagraphList const & parlist,
1042                         DocumentClassConstPtr docclass, ErrorList & errorList)
1043 {
1044         if (cur.inTexted()) {
1045                 Text * text = cur.text();
1046                 LBUFERR(text);
1047
1048                 PasteReturnValue prv =
1049                         pasteSelectionHelper(cur, parlist, docclass, 0, errorList);
1050                 cur.forceBufferUpdate();
1051                 cur.clearSelection();
1052                 text->setCursor(cur, prv.par, prv.pos);
1053         }
1054
1055         // mathed is handled in InsetMathNest/InsetMathGrid
1056         LATTEST(!cur.inMathed());
1057 }
1058
1059
1060 bool pasteFromStack(Cursor & cur, ErrorList & errorList, size_t sel_index)
1061 {
1062         // this does not make sense, if there is nothing to paste
1063         if (!checkPastePossible(sel_index))
1064                 return false;
1065
1066         cur.recordUndo();
1067         pasteParagraphList(cur, theCuts[sel_index].first,
1068                            theCuts[sel_index].second, errorList);
1069         return true;
1070 }
1071
1072
1073 bool pasteClipboardText(Cursor & cur, ErrorList & errorList, bool asParagraphs,
1074                         Clipboard::TextType type)
1075 {
1076         // Use internal clipboard if it is the most recent one
1077         // This overrides asParagraphs and type on purpose!
1078         if (theClipboard().isInternal())
1079                 return pasteFromStack(cur, errorList, 0);
1080
1081         // First try LyX format
1082         if ((type == Clipboard::LyXTextType ||
1083              type == Clipboard::LyXOrPlainTextType ||
1084              type == Clipboard::AnyTextType) &&
1085             theClipboard().hasTextContents(Clipboard::LyXTextType)) {
1086                 string lyx = theClipboard().getAsLyX();
1087                 if (!lyx.empty()) {
1088                         // For some strange reason gcc 3.2 and 3.3 do not accept
1089                         // Buffer buffer(string(), false);
1090                         Buffer buffer("", false);
1091                         buffer.setUnnamed(true);
1092                         if (buffer.readString(lyx)) {
1093                                 cur.recordUndo();
1094                                 pasteParagraphList(cur, buffer.paragraphs(),
1095                                         buffer.params().documentClassPtr(), errorList);
1096                                 return true;
1097                         }
1098                 }
1099         }
1100
1101         // Then try TeX and HTML
1102         Clipboard::TextType types[2] = {Clipboard::HtmlTextType, Clipboard::LaTeXTextType};
1103         string names[2] = {"html", "latexclipboard"};
1104         for (int i = 0; i < 2; ++i) {
1105                 if (type != types[i] && type != Clipboard::AnyTextType)
1106                         continue;
1107                 bool available = theClipboard().hasTextContents(types[i]);
1108
1109                 // If a specific type was explicitly requested, try to
1110                 // interpret plain text: The user told us that the clipboard
1111                 // contents is in the desired format
1112                 if (!available && type == types[i]) {
1113                         types[i] = Clipboard::PlainTextType;
1114                         available = theClipboard().hasTextContents(types[i]);
1115                 }
1116
1117                 if (available) {
1118                         docstring text = theClipboard().getAsText(types[i]);
1119                         available = !text.empty();
1120                         if (available) {
1121                                 // For some strange reason gcc 3.2 and 3.3 do not accept
1122                                 // Buffer buffer(string(), false);
1123                                 Buffer buffer("", false);
1124                                 buffer.setUnnamed(true);
1125                                 available = buffer.importString(names[i], text, errorList);
1126                                 if (available)
1127                                         available = !buffer.paragraphs().empty();
1128                                 if (available && !buffer.paragraphs()[0].empty()) {
1129                                         cur.recordUndo();
1130                                         pasteParagraphList(cur, buffer.paragraphs(),
1131                                                 buffer.params().documentClassPtr(), errorList);
1132                                         return true;
1133                                 }
1134                         }
1135                 }
1136         }
1137
1138         // Then try plain text
1139         docstring const text = theClipboard().getAsText(Clipboard::PlainTextType);
1140         if (text.empty())
1141                 return false;
1142         cur.recordUndo();
1143         if (asParagraphs)
1144                 cur.text()->insertStringAsParagraphs(cur, text, cur.current_font);
1145         else
1146                 cur.text()->insertStringAsLines(cur, text, cur.current_font);
1147         return true;
1148 }
1149
1150
1151 void pasteSimpleText(Cursor & cur, bool asParagraphs)
1152 {
1153         docstring text;
1154         // Use internal clipboard if it is the most recent one
1155         if (theClipboard().isInternal()) {
1156                 if (!checkPastePossible(0))
1157                         return;
1158
1159                 ParagraphList const & pars = theCuts[0].first;
1160                 ParagraphList::const_iterator it = pars.begin();
1161                 for (; it != pars.end(); ++it) {
1162                         if (it != pars.begin())
1163                                 text += "\n";
1164                         text += (*it).asString();
1165                 }
1166                 asParagraphs = false;
1167         } else {
1168                 // Then try plain text
1169                 text = theClipboard().getAsText(Clipboard::PlainTextType);
1170         }
1171
1172         if (text.empty())
1173                 return;
1174
1175         cur.recordUndo();
1176         cutSelection(cur, true, false);
1177         if (asParagraphs)
1178                 cur.text()->insertStringAsParagraphs(cur, text, cur.current_font);
1179         else
1180                 cur.text()->insertStringAsLines(cur, text, cur.current_font);
1181 }
1182
1183
1184 void pasteClipboardGraphics(Cursor & cur, ErrorList & /* errorList */,
1185                             Clipboard::GraphicsType preferedType)
1186 {
1187         LASSERT(theClipboard().hasGraphicsContents(preferedType), return);
1188
1189         // get picture from clipboard
1190         FileName filename = theClipboard().getAsGraphics(cur, preferedType);
1191         if (filename.empty())
1192                 return;
1193
1194         // create inset for graphic
1195         InsetGraphics * inset = new InsetGraphics(cur.buffer());
1196         InsetGraphicsParams params;
1197         params.filename = support::DocFileName(filename.absFileName(), false);
1198         inset->setParams(params);
1199         cur.recordUndo();
1200         cur.insert(inset);
1201 }
1202
1203
1204 void pasteSelection(Cursor & cur, ErrorList & errorList)
1205 {
1206         if (selectionBuffer.empty())
1207                 return;
1208         cur.recordUndo();
1209         pasteParagraphList(cur, selectionBuffer[0].first,
1210                            selectionBuffer[0].second, errorList);
1211 }
1212
1213
1214 void replaceSelectionWithString(Cursor & cur, docstring const & str)
1215 {
1216         cur.recordUndo();
1217         DocIterator selbeg = cur.selectionBegin();
1218
1219         // Get font setting before we cut, we need a copy here, not a bare reference.
1220         Font const font =
1221                 selbeg.paragraph().getFontSettings(cur.buffer()->params(), selbeg.pos());
1222
1223         // Insert the new string
1224         pos_type pos = cur.selEnd().pos();
1225         Paragraph & par = cur.selEnd().paragraph();
1226         docstring::const_iterator cit = str.begin();
1227         docstring::const_iterator end = str.end();
1228         for (; cit != end; ++cit, ++pos)
1229                 par.insertChar(pos, *cit, font, cur.buffer()->params().track_changes);
1230
1231         // Cut the selection
1232         cutSelection(cur, true, false);
1233 }
1234
1235
1236 void replaceSelection(Cursor & cur)
1237 {
1238         if (cur.selection())
1239                 cutSelection(cur, true, false);
1240 }
1241
1242
1243 void eraseSelection(Cursor & cur)
1244 {
1245         //lyxerr << "cap::eraseSelection begin: " << cur << endl;
1246         CursorSlice const & i1 = cur.selBegin();
1247         CursorSlice const & i2 = cur.selEnd();
1248         if (i1.inset().asInsetMath()) {
1249                 saveSelection(cur);
1250                 cur.top() = i1;
1251                 if (i1.idx() == i2.idx()) {
1252                         i1.cell().erase(i1.pos(), i2.pos());
1253                         // We may have deleted i1.cell(cur.pos()).
1254                         // Make sure that pos is valid.
1255                         if (cur.pos() > cur.lastpos())
1256                                 cur.pos() = cur.lastpos();
1257                 } else {
1258                         InsetMath * p = i1.asInsetMath();
1259                         Inset::row_type r1, r2;
1260                         Inset::col_type c1, c2;
1261                         region(i1, i2, r1, r2, c1, c2);
1262                         for (Inset::row_type row = r1; row <= r2; ++row)
1263                                 for (Inset::col_type col = c1; col <= c2; ++col)
1264                                         p->cell(p->index(row, col)).clear();
1265                         // We've deleted the whole cell. Only pos 0 is valid.
1266                         cur.pos() = 0;
1267                 }
1268                 // need a valid cursor. (Lgb)
1269                 cur.clearSelection();
1270         } else {
1271                 lyxerr << "can't erase this selection 1" << endl;
1272         }
1273         //lyxerr << "cap::eraseSelection end: " << cur << endl;
1274 }
1275
1276
1277 void selDel(Cursor & cur)
1278 {
1279         //lyxerr << "cap::selDel" << endl;
1280         if (cur.selection())
1281                 eraseSelection(cur);
1282 }
1283
1284
1285 void selClearOrDel(Cursor & cur)
1286 {
1287         //lyxerr << "cap::selClearOrDel" << endl;
1288         if (lyxrc.auto_region_delete)
1289                 selDel(cur);
1290         else
1291                 cur.setSelection(false);
1292 }
1293
1294
1295 docstring grabSelection(Cursor const & cur)
1296 {
1297         if (!cur.selection())
1298                 return docstring();
1299
1300 #if 0
1301         // grab selection by glueing multiple cells together. This is not what
1302         // we want because selections spanning multiple cells will get "&" and "\\"
1303         // seperators.
1304         ostringstream os;
1305         for (DocIterator dit = cur.selectionBegin();
1306              dit != cur.selectionEnd(); dit.forwardPos())
1307                 os << asString(dit.cell());
1308         return os.str();
1309 #endif
1310
1311         CursorSlice i1 = cur.selBegin();
1312         CursorSlice i2 = cur.selEnd();
1313
1314         if (i1.idx() == i2.idx()) {
1315                 if (i1.inset().asInsetMath()) {
1316                         MathData::const_iterator it = i1.cell().begin();
1317                         Buffer * buf = cur.buffer();
1318                         return asString(MathData(buf, it + i1.pos(), it + i2.pos()));
1319                 } else {
1320                         return from_ascii("unknown selection 1");
1321                 }
1322         }
1323
1324         Inset::row_type r1, r2;
1325         Inset::col_type c1, c2;
1326         region(i1, i2, r1, r2, c1, c2);
1327
1328         docstring data;
1329         if (i1.inset().asInsetMath()) {
1330                 for (Inset::row_type row = r1; row <= r2; ++row) {
1331                         if (row > r1)
1332                                 data += "\\\\";
1333                         for (Inset::col_type col = c1; col <= c2; ++col) {
1334                                 if (col > c1)
1335                                         data += '&';
1336                                 data += asString(i1.asInsetMath()->
1337                                         cell(i1.asInsetMath()->index(row, col)));
1338                         }
1339                 }
1340         } else {
1341                 data = from_ascii("unknown selection 2");
1342         }
1343         return data;
1344 }
1345
1346
1347 void dirtyTabularStack(bool b)
1348 {
1349         dirty_tabular_stack_ = b;
1350 }
1351
1352
1353 bool tabularStackDirty()
1354 {
1355         return dirty_tabular_stack_;
1356 }
1357
1358
1359 } // namespace cap
1360 } // namespace lyx