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, Buffer * tmpbuffer,
 114                      ErrorList & errorlist)
 115 {
 116         Buffer const & buffer = *cur.buffer();
 117         pit_type pit = cur.pit();
 118         pos_type pos = cur.pos();
 119         bool need_update = false;
 120         InsetText * target_inset = cur.inset().asInsetText();
 121         if (!target_inset) {
 122                 InsetTabular * it = cur.inset().asInsetTabular();
 123                 target_inset = it? it->cell(cur.idx())->asInsetText() : 0;
 124         }
 125         LASSERT(target_inset, return PasteReturnValue(pit, pos, need_update));
 126         ParagraphList & pars = target_inset->paragraphs();
 127
 128         if (parlist.empty())
 129                 return PasteReturnValue(pit, pos, need_update);
 130
 131         BOOST_ASSERT (pos <= pars[pit].size());
 132
 133         // Make a copy of the CaP paragraphs.
 134         ParagraphList insertion = parlist;
 135         DocumentClassConstPtr newDocClass = buffer.params().documentClassPtr();
 136
 137         // Now remove all out of the pars which is NOT allowed in the
 138         // new environment and set also another font if that is required.
 139
 140         // Convert newline to paragraph break in ParbreakIsNewline
 141         if (target_inset->getLayout().parbreakIsNewline()
 142             || pars[pit].layout().parbreak_is_newline) {
 143                 for (size_t i = 0; i != insertion.size(); ++i) {
 144                         for (pos_type j = 0; j != insertion[i].size(); ++j) {
 145                                 if (insertion[i].isNewline(j)) {
 146                                         // do not track deletion of newline
 147                                         insertion[i].eraseChar(j, false);
 148                                         insertion[i].setInsetOwner(target_inset);
 149                                         breakParagraphConservative(
 150                                                         buffer.params(),
 151                                                         insertion, i, j);
 152                                         break;
 153                                 }
 154                         }
 155                 }
 156         }
 157
 158         // set the paragraphs to plain layout if necessary
 159         if (cur.inset().usePlainLayout()) {
 160                 bool forcePlainLayout = cur.inset().forcePlainLayout();
 161                 Layout const & plainLayout = newDocClass->plainLayout();
 162                 Layout const & defaultLayout = newDocClass->defaultLayout();
 163                 ParagraphList::iterator const end = insertion.end();
 164                 ParagraphList::iterator par = insertion.begin();
 165                 for (; par != end; ++par) {
 166                         Layout const & parLayout = par->layout();
 167                         if (forcePlainLayout || parLayout == defaultLayout)
 168                                 par->setLayout(plainLayout);
 169                 }
 170         } else { // check if we need to reset from plain layout
 171                 Layout const & defaultLayout = newDocClass->defaultLayout();
 172                 Layout const & plainLayout = newDocClass->plainLayout();
 173                 ParagraphList::iterator const end = insertion.end();
 174                 ParagraphList::iterator par = insertion.begin();
 175                 for (; par != end; ++par) {
 176                         Layout const & parLayout = par->layout();
 177                         if (parLayout == plainLayout)
 178                                 par->setLayout(defaultLayout);
 179                 }
 180         }
 181
 182         InsetText in(cur.buffer());
 183         // Make sure there is no class difference.
 184         in.paragraphs().clear();
 185         // This works without copying any paragraph data because we have
 186         // a specialized swap method for ParagraphList. This is important
 187         // since we store pointers to insets at some places and we don't
 188         // want to invalidate them.
 189         insertion.swap(in.paragraphs());
 190         cap::switchBetweenClasses(oldDocClass, newDocClass, in, errorlist);
 191         insertion.swap(in.paragraphs());
 192
 193         ParagraphList::iterator tmpbuf = insertion.begin();
 194         int depth_delta = pars[pit].params().depth() - tmpbuf->params().depth();
 195
 196         depth_type max_depth = pars[pit].getMaxDepthAfter();
 197
 198         for (; tmpbuf != insertion.end(); ++tmpbuf) {
 199                 // If we have a negative jump so that the depth would
 200                 // go below 0 depth then we have to redo the delta to
 201                 // this new max depth level so that subsequent
 202                 // paragraphs are aligned correctly to this paragraph
 203                 // at level 0.
 204                 if (int(tmpbuf->params().depth()) + depth_delta < 0)
 205                         depth_delta = 0;
 206
 207                 // Set the right depth so that we are not too deep or shallow.
 208                 tmpbuf->params().depth(tmpbuf->params().depth() + depth_delta);
 209                 if (tmpbuf->params().depth() > max_depth)
 210                         tmpbuf->params().depth(max_depth);
 211
 212                 // Set max_depth for the next paragraph
 213                 max_depth = tmpbuf->getMaxDepthAfter();
 214
 215                 // Set the inset owner of this paragraph.
 216                 tmpbuf->setInsetOwner(target_inset);
 217                 for (pos_type i = 0; i < tmpbuf->size(); ++i) {
 218                         // do not track deletion of invalid insets
 219                         if (Inset * inset = tmpbuf->getInset(i))
 220                                 if (!target_inset->insetAllowed(inset->lyxCode()))
 221                                         tmpbuf->eraseChar(i--, false);
 222                 }
 223
 224                 tmpbuf->setChange(Change(buffer.params().track_changes ?
 225                                          Change::INSERTED : Change::UNCHANGED));
 226         }
 227
 228         bool const empty = pars[pit].empty();
 229         if (!empty) {
 230                 // Make the buf exactly the same layout as the cursor
 231                 // paragraph.
 232                 insertion.begin()->makeSameLayout(pars[pit]);
 233         }
 234
 235         // Prepare the paragraphs and insets for insertion.
 236         insertion.swap(in.paragraphs());
 237
 238         InsetIterator const i_end = inset_iterator_end(in);
 239         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 240                 // Even though this will also be done later, it has to be done here
 241                 // since some inset might going to try to access
 242                 // the buffer() member.
 243                 it->setBuffer(const_cast<Buffer &>(buffer));
 244                 switch (it->lyxCode()) {
 245
 246                 case MATH_HULL_CODE: {
 247                         // check for equation labels and resolve duplicates
 248                         InsetMathHull * ins = it->asInsetMath()->asHullInset();
 249                         std::vector<InsetLabel *> labels = ins->getLabels();
 250                         for (size_t i = 0; i != labels.size(); ++i) {
 251                                 if (!labels[i])
 252                                         continue;
 253                                 InsetLabel * lab = labels[i];
 254                                 docstring const oldname = lab->getParam("name");
 255                                 lab->updateLabel(oldname);
 256                                 // We need to update the buffer reference cache.
 257                                 need_update = true;
 258                                 docstring const newname = lab->getParam("name");
 259                                 if (oldname == newname)
 260                                         continue;
 261                                 // adapt the references
 262                                 for (InsetIterator itt = inset_iterator_begin(in);
 263                                       itt != i_end; ++itt) {
 264                                         if (itt->lyxCode() == REF_CODE) {
 265                                                 InsetCommand * ref = itt->asInsetCommand();
 266                                                 if (ref->getParam("reference") == oldname)
 267                                                         ref->setParam("reference", newname);
 268                                         } else if (itt->lyxCode() == MATH_REF_CODE) {
 269                                                 InsetMathRef * mi = itt->asInsetMath()->asRefInset();
 270                                                 // this is necessary to prevent an uninitialized
 271                                                 // buffer when the RefInset is in a MathBox.
 272                                                 // FIXME audit setBuffer calls
 273                                                 mi->setBuffer(const_cast<Buffer &>(buffer));
 274                                                 if (mi->getTarget() == oldname)
 275                                                         mi->changeTarget(newname);
 276                                         }
 277                                 }
 278                         }
 279                         break;
 280                 }
 281
 282                 case LABEL_CODE: {
 283                         // check for duplicates
 284                         InsetLabel & lab = static_cast<InsetLabel &>(*it);
 285                         docstring const oldname = lab.getParam("name");
 286                         lab.updateLabel(oldname);
 287                         // We need to update the buffer reference cache.
 288                         need_update = true;
 289                         docstring const newname = lab.getParam("name");
 290                         if (oldname == newname)
 291                                 break;
 292                         // adapt the references
 293                         for (InsetIterator itt = inset_iterator_begin(in); itt != i_end; ++itt) {
 294                                 if (itt->lyxCode() == REF_CODE) {
 295                                         InsetCommand & ref = static_cast<InsetCommand &>(*itt);
 296                                         if (ref.getParam("reference") == oldname)
 297                                                 ref.setParam("reference", newname);
 298                                 } else if (itt->lyxCode() == MATH_REF_CODE) {
 299                                         InsetMathRef * mi = itt->asInsetMath()->asRefInset();
 300                                         // this is necessary to prevent an uninitialized
 301                                         // buffer when the RefInset is in a MathBox.
 302                                         // FIXME audit setBuffer calls
 303                                         mi->setBuffer(const_cast<Buffer &>(buffer));
 304                                         if (mi->getTarget() == oldname)
 305                                                 mi->changeTarget(newname);
 306                                 }
 307                         }
 308                         break;
 309                 }
 310
 311                 case INCLUDE_CODE: {
 312                         InsetInclude & inc = static_cast<InsetInclude &>(*it);
 313                         inc.updateCommand();
 314                         // We need to update the list of included files.
 315                         need_update = true;
 316                         break;
 317                 }
 318
 319                 case BIBITEM_CODE: {
 320                         // check for duplicates
 321                         InsetBibitem & bib = static_cast<InsetBibitem &>(*it);
 322                         docstring const oldkey = bib.getParam("key");
 323                         bib.updateCommand(oldkey, false);
 324                         // We need to update the buffer reference cache.
 325                         need_update = true;
 326                         docstring const newkey = bib.getParam("key");
 327                         if (oldkey == newkey)
 328                                 break;
 329                         // adapt the references
 330                         for (InsetIterator itt = inset_iterator_begin(in);
 331                              itt != i_end; ++itt) {
 332                                 if (itt->lyxCode() == CITE_CODE) {
 333                                         InsetCommand * ref = itt->asInsetCommand();
 334                                         if (ref->getParam("key") == oldkey)
 335                                                 ref->setParam("key", newkey);
 336                                 }
 337                         }
 338                         break;
 339                 }
 340
 341                 case BRANCH_CODE: {
 342                         // check if branch is known to target buffer
 343                         // or its master
 344                         InsetBranch & br = static_cast<InsetBranch &>(*it);
 345                         docstring const name = br.branch();
 346                         if (name.empty())
 347                                 break;
 348                         bool const is_child = (&buffer != buffer.masterBuffer());
 349                         BranchList branchlist = buffer.params().branchlist();
 350                         if ((!is_child && branchlist.find(name))
 351                             || (is_child && (branchlist.find(name)
 352                                 || buffer.masterBuffer()->params().branchlist().find(name))))
 353                                 break;
 354                         if (tmpbuffer) {
 355                                 // This is for a temporary buffer, so simply create the branch.
 356                                 // Must not use lyx::dispatch(), since tmpbuffer has no view.
 357                                 DispatchResult dr;
 358                                 tmpbuffer->dispatch(FuncRequest(LFUN_BRANCH_ADD, name), dr);
 359                         } else {
 360                                 docstring text = bformat(
 361                                         _("The pasted branch \"%1$s\" is undefined.\n"
 362                                           "Do you want to add it to the document's branch list?"),
 363                                         name);
 364                                 if (frontend::Alert::prompt(_("Unknown branch"),
 365                                           text, 0, 1, _("&Add"), _("&Don't Add")) != 0)
 366                                         break;
 367                                 lyx::dispatch(FuncRequest(LFUN_BRANCH_ADD, name));
 368                         }
 369                         // We need to update the list of branches.
 370                         need_update = true;
 371                         break;
 372                 }
 373
 374                 default:
 375                         break; // nothing
 376                 }
 377         }
 378         insertion.swap(in.paragraphs());
 379
 380         // Split the paragraph for inserting the buf if necessary.
 381         if (!empty)
 382                 breakParagraphConservative(buffer.params(), pars, pit, pos);
 383
 384         // Paste it!
 385         if (empty) {
 386                 pars.insert(boost::next(pars.begin(), pit),
 387                             insertion.begin(),
 388                             insertion.end());
 389
 390                 // merge the empty par with the last par of the insertion
 391                 mergeParagraph(buffer.params(), pars,
 392                                pit + insertion.size() - 1);
 393         } else {
 394                 pars.insert(boost::next(pars.begin(), pit + 1),
 395                             insertion.begin(),
 396                             insertion.end());
 397
 398                 // merge the first par of the insertion with the current par
 399                 mergeParagraph(buffer.params(), pars, pit);
 400         }
 401
 402         // Store the new cursor position.
 403         pit_type last_paste = pit + insertion.size() - 1;
 404         pit_type startpit = pit;
 405         pit = last_paste;
 406         pos = pars[last_paste].size();
 407
 408         // FIXME Should we do it here, or should we let updateBuffer() do it?
 409         // Set paragraph buffers. It's important to do this right away
 410         // before something calls Inset::buffer() and causes a crash.
 411         for (pit_type p = startpit; p <= pit; ++p)
 412                 pars[p].setBuffer(const_cast<Buffer &>(buffer));
 413
 414         // Join (conditionally) last pasted paragraph with next one, i.e.,
 415         // the tail of the spliced document paragraph
 416         if (!empty && last_paste + 1 != pit_type(pars.size())) {
 417                 if (pars[last_paste + 1].hasSameLayout(pars[last_paste])) {
 418                         mergeParagraph(buffer.params(), pars, last_paste);
 419                 } else if (pars[last_paste + 1].empty()) {
 420                         pars[last_paste + 1].makeSameLayout(pars[last_paste]);
 421                         mergeParagraph(buffer.params(), pars, last_paste);
 422                 } else if (pars[last_paste].empty()) {
 423                         pars[last_paste].makeSameLayout(pars[last_paste + 1]);
 424                         mergeParagraph(buffer.params(), pars, last_paste);
 425                 } else {
 426                         pars[last_paste + 1].stripLeadingSpaces(buffer.params().track_changes);
 427                         ++last_paste;
 428                 }
 429         }
 430
 431         return PasteReturnValue(pit, pos, need_update);
 432 }
 433
 434
 435 PitPosPair eraseSelectionHelper(BufferParams const & params,
 436         ParagraphList & pars,
 437         pit_type startpit, pit_type endpit,
 438         int startpos, int endpos)
 439 {
 440         // Start of selection is really invalid.
 441         if (startpit == pit_type(pars.size()) ||
 442             (startpos > pars[startpit].size()))
 443                 return PitPosPair(endpit, endpos);
 444
 445         // Start and end is inside same paragraph
 446         if (endpit == pit_type(pars.size()) || startpit == endpit) {
 447                 endpos -= pars[startpit].eraseChars(startpos, endpos, params.track_changes);
 448                 return PitPosPair(endpit, endpos);
 449         }
 450
 451         for (pit_type pit = startpit; pit != endpit + 1;) {
 452                 pos_type const left  = (pit == startpit ? startpos : 0);
 453                 pos_type right = (pit == endpit ? endpos : pars[pit].size() + 1);
 454                 bool const merge = pars[pit].isMergedOnEndOfParDeletion(params.track_changes);
 455
 456                 // Logically erase only, including the end-of-paragraph character
 457                 pars[pit].eraseChars(left, right, params.track_changes);
 458
 459                 // Separate handling of paragraph break:
 460                 if (merge && pit != endpit &&
 461                     (pit + 1 != endpit
 462                      || pars[pit].hasSameLayout(pars[endpit])
 463                      || pars[endpit].size() == endpos)) {
 464                         if (pit + 1 == endpit)
 465                                 endpos += pars[pit].size();
 466                         mergeParagraph(params, pars, pit);
 467                         --endpit;
 468                 } else
 469                         ++pit;
 470         }
 471
 472         // Ensure legal cursor pos:
 473         endpit = startpit;
 474         endpos = startpos;
 475         return PitPosPair(endpit, endpos);
 476 }
 477
 478
 479 void putClipboard(ParagraphList const & paragraphs,
 480         DocumentClassConstPtr docclass, docstring const & plaintext)
 481 {
 482         // This used to need to be static to avoid a memory leak. It no longer needs
 483         // to be so, but the alternative is to construct a new one of these (with a
 484         // new temporary directory, etc) every time, and then to destroy it. So maybe
 485         // it's worth just keeping this one around.
 486         // FIXME THREAD
 487         static Buffer * staticbuffer = theBufferList().newInternalBuffer(
 488                 FileName::tempName("clipboard.internal").absFileName());
 489
 490         // These two things only really need doing the first time.
 491         staticbuffer->setUnnamed(true);
 492         staticbuffer->inset().setBuffer(*staticbuffer);
 493
 494         // Use a clone for the complicated stuff so that we do not need to clean
 495         // up in order to avoid a crash.
 496         Buffer * buffer = staticbuffer->cloneBufferOnly();
 497         LASSERT(buffer, return);
 498
 499         // This needs doing every time.
 500         buffer->params().setDocumentClass(docclass);
 501
 502         // we will use pasteSelectionHelper to copy the paragraphs into the
 503         // temporary Buffer, since it does a lot of things to fix them up.
 504         DocIterator dit = doc_iterator_begin(buffer, &buffer->inset());
 505         ErrorList el;
 506         pasteSelectionHelper(dit, paragraphs, docclass, buffer, el);
 507
 508         // We don't want to produce images that are not used. Therefore,
 509         // output formulas as MathML. Even if this is not understood by all
 510         // applications, the number that can parse it should go up in the future.
 511         buffer->params().html_math_output = BufferParams::MathML;
 512
 513         // Make sure MarkAsExporting is deleted before buffer is
 514         {
 515                 // The Buffer is being used to export. This is necessary so that the
 516                 // updateMacros call will record the needed information.
 517                 MarkAsExporting mex(buffer);
 518
 519                 buffer->updateBuffer(Buffer::UpdateMaster, OutputUpdate);
 520                 buffer->updateMacros();
 521                 buffer->updateMacroInstances(OutputUpdate);
 522
 523                 // LyX's own format
 524                 string lyx;
 525                 ostringstream oslyx;
 526                 if (buffer->write(oslyx))
 527                         lyx = oslyx.str();
 528
 529                 // XHTML format
 530                 odocstringstream oshtml;
 531                 OutputParams runparams(encodings.fromLyXName("utf8"));
 532                 // We do not need to produce images, etc.
 533                 runparams.dryrun = true;
 534                 // We are not interested in errors (bug 8866)
 535                 runparams.silent = true;
 536                 buffer->writeLyXHTMLSource(oshtml, runparams, Buffer::FullSource);
 537
 538                 theClipboard().put(lyx, oshtml.str(), plaintext);
 539         }
 540
 541         // Save that memory
 542         delete buffer;
 543 }
 544
 545
 546 /// return true if the whole ParagraphList is deleted
 547 static bool isFullyDeleted(ParagraphList const & pars)
 548 {
 549         pit_type const pars_size = static_cast<pit_type>(pars.size());
 550
 551         // check all paragraphs
 552         for (pit_type pit = 0; pit < pars_size; ++pit) {
 553                 if (!pars[pit].empty())   // prevent assertion failure
 554                         if (!pars[pit].isDeleted(0, pars[pit].size()))
 555                                 return false;
 556         }
 557         return true;
 558 }
 559
 560
 561 void copySelectionHelper(Buffer const & buf, Text const & text,
 562         pit_type startpit, pit_type endpit,
 563         int start, int end, DocumentClassConstPtr dc, CutStack & cutstack)
 564 {
 565         ParagraphList const & pars = text.paragraphs();
 566
 567         // In most of these cases, we can try to recover.
 568         LASSERT(0 <= start, start = 0);
 569         LASSERT(start <= pars[startpit].size(), start = pars[startpit].size());
 570         LASSERT(0 <= end, end = 0);
 571         LASSERT(end <= pars[endpit].size(), end = pars[endpit].size());
 572         LASSERT(startpit != endpit || start <= end, return);
 573
 574         // Clone the paragraphs within the selection.
 575         ParagraphList copy_pars(boost::next(pars.begin(), startpit),
 576                                 boost::next(pars.begin(), endpit + 1));
 577
 578         // Remove the end of the last paragraph; afterwards, remove the
 579         // beginning of the first paragraph. Keep this order - there may only
 580         // be one paragraph!  Do not track deletions here; this is an internal
 581         // action not visible to the user
 582
 583         Paragraph & back = copy_pars.back();
 584         back.eraseChars(end, back.size(), false);
 585         Paragraph & front = copy_pars.front();
 586         front.eraseChars(0, start, false);
 587
 588         ParagraphList::iterator it = copy_pars.begin();
 589         ParagraphList::iterator it_end = copy_pars.end();
 590
 591         for (; it != it_end; ++it) {
 592                 // Since we have a copy of the paragraphs, the insets
 593                 // do not have a proper buffer reference. It makes
 594                 // sense to add them temporarily, because the
 595                 // operations below depend on that (acceptChanges included).
 596                 it->setBuffer(const_cast<Buffer &>(buf));
 597                 // PassThru paragraphs have the Language
 598                 // latex_language. This is invalid for others, so we
 599                 // need to change it to the buffer language.
 600                 if (it->isPassThru())
 601                         it->changeLanguage(buf.params(),
 602                                            latex_language, buf.language());
 603         }
 604
 605         // do not copy text (also nested in insets) which is marked as
 606         // deleted, unless the whole selection was deleted
 607         if (!isFullyDeleted(copy_pars))
 608                 acceptChanges(copy_pars, buf.params());
 609         else
 610                 rejectChanges(copy_pars, buf.params());
 611
 612
 613         // do some final cleanup now, to make sure that the paragraphs
 614         // are not linked to something else.
 615         it = copy_pars.begin();
 616         for (; it != it_end; ++it) {
 617                 it->setBuffer(*static_cast<Buffer *>(0));
 618                 it->setInsetOwner(0);
 619         }
 620
 621         cutstack.push(make_pair(copy_pars, dc));
 622 }
 623
 624 } // namespace anon
 625
 626
 627
 628
 629 namespace cap {
 630
 631 void region(CursorSlice const & i1, CursorSlice const & i2,
 632             Inset::row_type & r1, Inset::row_type & r2,
 633             Inset::col_type & c1, Inset::col_type & c2)
 634 {
 635         Inset & p = i1.inset();
 636         c1 = p.col(i1.idx());
 637         c2 = p.col(i2.idx());
 638         if (c1 > c2)
 639                 swap(c1, c2);
 640         r1 = p.row(i1.idx());
 641         r2 = p.row(i2.idx());
 642         if (r1 > r2)
 643                 swap(r1, r2);
 644 }
 645
 646
 647 docstring grabAndEraseSelection(Cursor & cur)
 648 {
 649         if (!cur.selection())
 650                 return docstring();
 651         docstring res = grabSelection(cur);
 652         eraseSelection(cur);
 653         return res;
 654 }
 655
 656
 657 bool reduceSelectionToOneCell(Cursor & cur)
 658 {
 659         if (!cur.selection() || !cur.inMathed())
 660                 return false;
 661
 662         CursorSlice i1 = cur.selBegin();
 663         CursorSlice i2 = cur.selEnd();
 664         if (!i1.inset().asInsetMath())
 665                 return false;
 666
 667         // the easy case: do nothing if only one cell is selected
 668         if (i1.idx() == i2.idx())
 669                 return true;
 670
 671         cur.top().pos() = 0;
 672         cur.resetAnchor();
 673         cur.top().pos() = cur.top().lastpos();
 674
 675         return true;
 676 }
 677
 678
 679 bool multipleCellsSelected(Cursor const & cur)
 680 {
 681         if (!cur.selection() || !cur.inMathed())
 682                 return false;
 683
 684         CursorSlice i1 = cur.selBegin();
 685         CursorSlice i2 = cur.selEnd();
 686         if (!i1.inset().asInsetMath())
 687                 return false;
 688
 689         if (i1.idx() == i2.idx())
 690                 return false;
 691
 692         return true;
 693 }
 694
 695
 696 void switchBetweenClasses(DocumentClassConstPtr oldone,
 697                 DocumentClassConstPtr newone, InsetText & in, ErrorList & errorlist)
 698 {
 699         errorlist.clear();
 700
 701         LBUFERR(!in.paragraphs().empty());
 702         if (oldone == newone)
 703                 return;
 704
 705         DocumentClass const & oldtc = *oldone;
 706         DocumentClass const & newtc = *newone;
 707
 708         // layouts
 709         ParIterator it = par_iterator_begin(in);
 710         ParIterator end = par_iterator_end(in);
 711         // for remembering which layouts we've had to add
 712         set<docstring> newlayouts;
 713         for (; it != end; ++it) {
 714                 docstring const name = it->layout().name();
 715
 716                 // the pasted text will keep their own layout name. If this layout does
 717                 // not exist in the new document, it will behave like a standard layout.
 718                 bool const added_one = newtc.addLayoutIfNeeded(name);
 719                 if (added_one)
 720                         newlayouts.insert(name);
 721
 722                 if (added_one || newlayouts.find(name) != newlayouts.end()) {
 723                         // Warn the user.
 724                         docstring const s = bformat(_("Layout `%1$s' was not found."), name);
 725                         errorlist.push_back(
 726                                 ErrorItem(_("Layout Not Found"), s, it->id(), 0, it->size()));
 727                 }
 728
 729                 if (in.usePlainLayout())
 730                         it->setLayout(newtc.plainLayout());
 731                 else
 732                         it->setLayout(newtc[name]);
 733         }
 734
 735         // character styles
 736         InsetIterator const i_end = inset_iterator_end(in);
 737         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 738                 if (it->lyxCode() != FLEX_CODE)
 739                         // FIXME: Should we verify all InsetCollapsable?
 740                         continue;
 741
 742                 docstring const layoutName = it->layoutName();
 743                 docstring const & n = newone->insetLayout(layoutName).name();
 744                 bool const is_undefined = n.empty() ||
 745                         n == DocumentClass::plainInsetLayout().name();
 746                 if (!is_undefined)
 747                         continue;
 748
 749                 // The flex inset is undefined in newtc
 750                 docstring const oldname = from_utf8(oldtc.name());
 751                 docstring const newname = from_utf8(newtc.name());
 752                 docstring s;
 753                 if (oldname == newname)
 754                         s = bformat(_("Flex inset %1$s is undefined after "
 755                                 "reloading `%2$s' layout."), layoutName, oldname);
 756                 else
 757                         s = bformat(_("Flex inset %1$s is undefined because of "
 758                                 "conversion from `%2$s' layout to `%3$s'."),
 759                                 layoutName, oldname, newname);
 760                 // To warn the user that something had to be done.
 761                 errorlist.push_back(ErrorItem(
 762                                 _("Undefined flex inset"),
 763                                 s, it.paragraph().id(), it.pos(), it.pos() + 1));
 764         }
 765 }
 766
 767
 768 vector<docstring> availableSelections(Buffer const * buf)
 769 {
 770         vector<docstring> selList;
 771         if (!buf)
 772                 return selList;
 773
 774         CutStack::const_iterator cit = theCuts.begin();
 775         CutStack::const_iterator end = theCuts.end();
 776         for (; cit != end; ++cit) {
 777                 // we do not use cit-> here because gcc 2.9x does not
 778                 // like it (JMarc)
 779                 ParagraphList const & pars = (*cit).first;
 780                 docstring asciiSel;
 781                 ParagraphList::const_iterator pit = pars.begin();
 782                 ParagraphList::const_iterator pend = pars.end();
 783                 for (; pit != pend; ++pit) {
 784                         Paragraph par(*pit, 0, 26);
 785                         // adapt paragraph to current buffer.
 786                         par.setBuffer(const_cast<Buffer &>(*buf));
 787                         asciiSel += par.asString(AS_STR_INSETS);
 788                         if (asciiSel.size() > 25) {
 789                                 asciiSel.replace(22, docstring::npos,
 790                                                  from_ascii("..."));
 791                                 break;
 792                         }
 793                 }
 794
 795                 selList.push_back(asciiSel);
 796         }
 797
 798         return selList;
 799 }
 800
 801
 802 size_type numberOfSelections()
 803 {
 804         return theCuts.size();
 805 }
 806
 807
 808 void cutSelection(Cursor & cur, bool doclear, bool realcut)
 809 {
 810         // This doesn't make sense, if there is no selection
 811         if (!cur.selection())
 812                 return;
 813
 814         // OK, we have a selection. This is always between cur.selBegin()
 815         // and cur.selEnd()
 816
 817         if (cur.inTexted()) {
 818                 Text * text = cur.text();
 819                 LBUFERR(text);
 820
 821                 saveSelection(cur);
 822
 823                 // make sure that the depth behind the selection are restored, too
 824                 cur.recordUndoSelection();
 825                 pit_type begpit = cur.selBegin().pit();
 826                 pit_type endpit = cur.selEnd().pit();
 827
 828                 int endpos = cur.selEnd().pos();
 829
 830                 BufferParams const & bp = cur.buffer()->params();
 831                 if (realcut) {
 832                         copySelectionHelper(*cur.buffer(),
 833                                 *text,
 834                                 begpit, endpit,
 835                                 cur.selBegin().pos(), endpos,
 836                                 bp.documentClassPtr(), theCuts);
 837                         // Stuff what we got on the clipboard.
 838                         // Even if there is no selection.
 839                         putClipboard(theCuts[0].first, theCuts[0].second,
 840                                 cur.selectionAsString(true));
 841                 }
 842
 843                 if (begpit != endpit)
 844                         cur.screenUpdateFlags(Update::Force | Update::FitCursor);
 845
 846                 boost::tie(endpit, endpos) =
 847                         eraseSelectionHelper(bp,
 848                                 text->paragraphs(),
 849                                 begpit, endpit,
 850                                 cur.selBegin().pos(), endpos);
 851
 852                 // cutSelection can invalidate the cursor so we need to set
 853                 // it anew. (Lgb)
 854                 // we prefer the end for when tracking changes
 855                 cur.pos() = endpos;
 856                 cur.pit() = endpit;
 857
 858                 // sometimes necessary
 859                 if (doclear
 860                         && text->paragraphs()[begpit].stripLeadingSpaces(bp.track_changes))
 861                         cur.fixIfBroken();
 862
 863                 // need a valid cursor. (Lgb)
 864                 cur.clearSelection();
 865
 866                 // After a cut operation, we must make sure that the Buffer is updated
 867                 // because some further operation might need updated label information for
 868                 // example. So we cannot just use "cur.forceBufferUpdate()" here.
 869                 // This fixes #7071.
 870                 cur.buffer()->updateBuffer();
 871
 872                 // tell tabular that a recent copy happened
 873                 dirtyTabularStack(false);
 874         }
 875
 876         if (cur.inMathed()) {
 877                 if (cur.selBegin().idx() != cur.selEnd().idx()) {
 878                         // The current selection spans more than one cell.
 879                         // Record all cells
 880                         cur.recordUndoInset();
 881                 } else {
 882                         // Record only the current cell to avoid a jumping
 883                         // cursor after undo
 884                         cur.recordUndo();
 885                 }
 886                 if (realcut)
 887                         copySelection(cur);
 888                 eraseSelection(cur);
 889         }
 890 }
 891
 892
 893 void copySelection(Cursor const & cur)
 894 {
 895         copySelection(cur, cur.selectionAsString(true));
 896 }
 897
 898
 899 void copyInset(Cursor const & cur, Inset * inset, docstring const & plaintext)
 900 {
 901         ParagraphList pars;
 902         Paragraph par;
 903         BufferParams const & bp = cur.buffer()->params();
 904         par.setLayout(bp.documentClass().plainLayout());
 905         Font font(inherit_font, bp.language);
 906         par.insertInset(0, inset, font, Change(Change::UNCHANGED));
 907         pars.push_back(par);
 908         theCuts.push(make_pair(pars, bp.documentClassPtr()));
 909
 910         // stuff the selection onto the X clipboard, from an explicit copy request
 911         putClipboard(theCuts[0].first, theCuts[0].second, plaintext);
 912 }
 913
 914
 915 namespace {
 916
 917 void copySelectionToStack(Cursor const & cur, CutStack & cutstack)
 918 {
 919         // this doesn't make sense, if there is no selection
 920         if (!cur.selection())
 921                 return;
 922
 923         // copySelection can not yet handle the case of cross idx selection
 924         if (cur.selBegin().idx() != cur.selEnd().idx())
 925                 return;
 926
 927         if (cur.inTexted()) {
 928                 Text * text = cur.text();
 929                 LBUFERR(text);
 930                 // ok we have a selection. This is always between cur.selBegin()
 931                 // and sel_end cursor
 932
 933                 // copy behind a space if there is one
 934                 ParagraphList & pars = text->paragraphs();
 935                 pos_type pos = cur.selBegin().pos();
 936                 pit_type par = cur.selBegin().pit();
 937                 while (pos < pars[par].size() &&
 938                        pars[par].isLineSeparator(pos) &&
 939                        (par != cur.selEnd().pit() || pos < cur.selEnd().pos()))
 940                         ++pos;
 941
 942                 copySelectionHelper(*cur.buffer(), *text, par, cur.selEnd().pit(),
 943                         pos, cur.selEnd().pos(),
 944                         cur.buffer()->params().documentClassPtr(), cutstack);
 945
 946                 // Reset the dirty_tabular_stack_ flag only when something
 947                 // is copied to the clipboard (not to the selectionBuffer).
 948                 if (&cutstack == &theCuts)
 949                         dirtyTabularStack(false);
 950         }
 951
 952         if (cur.inMathed()) {
 953                 //lyxerr << "copySelection in mathed" << endl;
 954                 ParagraphList pars;
 955                 Paragraph par;
 956                 BufferParams const & bp = cur.buffer()->params();
 957                 // FIXME This should be the plain layout...right?
 958                 par.setLayout(bp.documentClass().plainLayout());
 959                 par.insert(0, grabSelection(cur), Font(), Change(Change::UNCHANGED));
 960                 pars.push_back(par);
 961                 cutstack.push(make_pair(pars, bp.documentClassPtr()));
 962         }
 963 }
 964
 965 }
 966
 967
 968 void copySelectionToStack()
 969 {
 970         if (!selectionBuffer.empty())
 971                 theCuts.push(selectionBuffer[0]);
 972 }
 973
 974
 975 void copySelection(Cursor const & cur, docstring const & plaintext)
 976 {
 977         // In tablemode, because copy and paste actually use special table stack
 978         // we do not attempt to get selected paragraphs under cursor. Instead, a
 979         // paragraph with the plain text version is generated so that table cells
 980         // can be pasted as pure text somewhere else.
 981         if (cur.selBegin().idx() != cur.selEnd().idx()) {
 982                 ParagraphList pars;
 983                 Paragraph par;
 984                 BufferParams const & bp = cur.buffer()->params();
 985                 par.setLayout(bp.documentClass().plainLayout());
 986                 par.insert(0, plaintext, Font(), Change(Change::UNCHANGED));
 987                 pars.push_back(par);
 988                 theCuts.push(make_pair(pars, bp.documentClassPtr()));
 989         } else {
 990                 copySelectionToStack(cur, theCuts);
 991         }
 992
 993         // stuff the selection onto the X clipboard, from an explicit copy request
 994         putClipboard(theCuts[0].first, theCuts[0].second, plaintext);
 995 }
 996
 997
 998 void saveSelection(Cursor const & cur)
 999 {
1000         // This function is called, not when a selection is formed, but when
1001         // a selection is cleared. Therefore, multiple keyboard selection
1002         // will not repeatively trigger this function (bug 3877).
1003         if (cur.selection()
1004             && cur.selBegin() == cur.bv().cursor().selBegin()
1005             && cur.selEnd() == cur.bv().cursor().selEnd()) {
1006                 LYXERR(Debug::SELECTION, "saveSelection: '" << cur.selectionAsString(true) << "'");
1007                 copySelectionToStack(cur, selectionBuffer);
1008         }
1009 }
1010
1011
1012 bool selection()
1013 {
1014         return !selectionBuffer.empty();
1015 }
1016
1017
1018 void clearSelection()
1019 {
1020         selectionBuffer.clear();
1021 }
1022
1023
1024 void clearCutStack()
1025 {
1026         theCuts.clear();
1027 }
1028
1029
1030 docstring selection(size_t sel_index)
1031 {
1032         return sel_index < theCuts.size()
1033                 ? theCuts[sel_index].first.back().asString(AS_STR_INSETS | AS_STR_NEWLINES)
1034                 : docstring();
1035 }
1036
1037
1038 void pasteParagraphList(Cursor & cur, ParagraphList const & parlist,
1039                         DocumentClassConstPtr docclass, ErrorList & errorList)
1040 {
1041         if (cur.inTexted()) {
1042                 Text * text = cur.text();
1043                 LBUFERR(text);
1044
1045                 PasteReturnValue prv =
1046                         pasteSelectionHelper(cur, parlist, docclass, 0, errorList);
1047                 cur.forceBufferUpdate();
1048                 cur.clearSelection();
1049                 text->setCursor(cur, prv.par, prv.pos);
1050         }
1051
1052         // mathed is handled in InsetMathNest/InsetMathGrid
1053         LATTEST(!cur.inMathed());
1054 }
1055
1056
1057 bool pasteFromStack(Cursor & cur, ErrorList & errorList, size_t sel_index)
1058 {
1059         // this does not make sense, if there is nothing to paste
1060         if (!checkPastePossible(sel_index))
1061                 return false;
1062
1063         cur.recordUndo();
1064         pasteParagraphList(cur, theCuts[sel_index].first,
1065                            theCuts[sel_index].second, errorList);
1066         return true;
1067 }
1068
1069
1070 bool pasteClipboardText(Cursor & cur, ErrorList & errorList, bool asParagraphs,
1071                         Clipboard::TextType type)
1072 {
1073         // Use internal clipboard if it is the most recent one
1074         // This overrides asParagraphs and type on purpose!
1075         if (theClipboard().isInternal())
1076                 return pasteFromStack(cur, errorList, 0);
1077
1078         // First try LyX format
1079         if ((type == Clipboard::LyXTextType ||
1080              type == Clipboard::LyXOrPlainTextType ||
1081              type == Clipboard::AnyTextType) &&
1082             theClipboard().hasTextContents(Clipboard::LyXTextType)) {
1083                 string lyx = theClipboard().getAsLyX();
1084                 if (!lyx.empty()) {
1085                         // For some strange reason gcc 3.2 and 3.3 do not accept
1086                         // Buffer buffer(string(), false);
1087                         Buffer buffer("", false);
1088                         buffer.setUnnamed(true);
1089                         if (buffer.readString(lyx)) {
1090                                 cur.recordUndo();
1091                                 pasteParagraphList(cur, buffer.paragraphs(),
1092                                         buffer.params().documentClassPtr(), errorList);
1093                                 return true;
1094                         }
1095                 }
1096         }
1097
1098         // Then try TeX and HTML
1099         Clipboard::TextType types[2] = {Clipboard::HtmlTextType, Clipboard::LaTeXTextType};
1100         string names[2] = {"html", "latexclipboard"};
1101         for (int i = 0; i < 2; ++i) {
1102                 if (type != types[i] && type != Clipboard::AnyTextType)
1103                         continue;
1104                 bool available = theClipboard().hasTextContents(types[i]);
1105
1106                 // If a specific type was explicitly requested, try to
1107                 // interpret plain text: The user told us that the clipboard
1108                 // contents is in the desired format
1109                 if (!available && type == types[i]) {
1110                         types[i] = Clipboard::PlainTextType;
1111                         available = theClipboard().hasTextContents(types[i]);
1112                 }
1113
1114                 if (available) {
1115                         docstring text = theClipboard().getAsText(types[i]);
1116                         available = !text.empty();
1117                         if (available) {
1118                                 // For some strange reason gcc 3.2 and 3.3 do not accept
1119                                 // Buffer buffer(string(), false);
1120                                 Buffer buffer("", false);
1121                                 buffer.setUnnamed(true);
1122                                 available = buffer.importString(names[i], text, errorList);
1123                                 if (available)
1124                                         available = !buffer.paragraphs().empty();
1125                                 if (available && !buffer.paragraphs()[0].empty()) {
1126                                         cur.recordUndo();
1127                                         pasteParagraphList(cur, buffer.paragraphs(),
1128                                                 buffer.params().documentClassPtr(), errorList);
1129                                         return true;
1130                                 }
1131                         }
1132                 }
1133         }
1134
1135         // Then try plain text
1136         docstring const text = theClipboard().getAsText(Clipboard::PlainTextType);
1137         if (text.empty())
1138                 return false;
1139         cur.recordUndo();
1140         if (asParagraphs)
1141                 cur.text()->insertStringAsParagraphs(cur, text, cur.current_font);
1142         else
1143                 cur.text()->insertStringAsLines(cur, text, cur.current_font);
1144         return true;
1145 }
1146
1147
1148 void pasteSimpleText(Cursor & cur, bool asParagraphs)
1149 {
1150         docstring text;
1151         // Use internal clipboard if it is the most recent one
1152         if (theClipboard().isInternal()) {
1153                 if (!checkPastePossible(0))
1154                         return;
1155
1156                 ParagraphList const & pars = theCuts[0].first;
1157                 ParagraphList::const_iterator it = pars.begin();
1158                 for (; it != pars.end(); ++it) {
1159                         if (it != pars.begin())
1160                                 text += "\n";
1161                         text += (*it).asString();
1162                 }
1163                 asParagraphs = false;
1164         } else {
1165                 // Then try plain text
1166                 text = theClipboard().getAsText(Clipboard::PlainTextType);
1167         }
1168
1169         if (text.empty())
1170                 return;
1171
1172         cur.recordUndo();
1173         cutSelection(cur, true, false);
1174         if (asParagraphs)
1175                 cur.text()->insertStringAsParagraphs(cur, text, cur.current_font);
1176         else
1177                 cur.text()->insertStringAsLines(cur, text, cur.current_font);
1178 }
1179
1180
1181 void pasteClipboardGraphics(Cursor & cur, ErrorList & /* errorList */,
1182                             Clipboard::GraphicsType preferedType)
1183 {
1184         LASSERT(theClipboard().hasGraphicsContents(preferedType), return);
1185
1186         // get picture from clipboard
1187         FileName filename = theClipboard().getAsGraphics(cur, preferedType);
1188         if (filename.empty())
1189                 return;
1190
1191         // create inset for graphic
1192         InsetGraphics * inset = new InsetGraphics(cur.buffer());
1193         InsetGraphicsParams params;
1194         params.filename = support::DocFileName(filename.absFileName(), false);
1195         inset->setParams(params);
1196         cur.recordUndo();
1197         cur.insert(inset);
1198 }
1199
1200
1201 void pasteSelection(Cursor & cur, ErrorList & errorList)
1202 {
1203         if (selectionBuffer.empty())
1204                 return;
1205         cur.recordUndo();
1206         pasteParagraphList(cur, selectionBuffer[0].first,
1207                            selectionBuffer[0].second, errorList);
1208 }
1209
1210
1211 void replaceSelectionWithString(Cursor & cur, docstring const & str)
1212 {
1213         cur.recordUndo();
1214         DocIterator selbeg = cur.selectionBegin();
1215
1216         // Get font setting before we cut, we need a copy here, not a bare reference.
1217         Font const font =
1218                 selbeg.paragraph().getFontSettings(cur.buffer()->params(), selbeg.pos());
1219
1220         // Insert the new string
1221         pos_type pos = cur.selEnd().pos();
1222         Paragraph & par = cur.selEnd().paragraph();
1223         docstring::const_iterator cit = str.begin();
1224         docstring::const_iterator end = str.end();
1225         for (; cit != end; ++cit, ++pos)
1226                 par.insertChar(pos, *cit, font, cur.buffer()->params().track_changes);
1227
1228         // Cut the selection
1229         cutSelection(cur, true, false);
1230 }
1231
1232
1233 void replaceSelection(Cursor & cur)
1234 {
1235         if (cur.selection())
1236                 cutSelection(cur, true, false);
1237 }
1238
1239
1240 void eraseSelection(Cursor & cur)
1241 {
1242         //lyxerr << "cap::eraseSelection begin: " << cur << endl;
1243         CursorSlice const & i1 = cur.selBegin();
1244         CursorSlice const & i2 = cur.selEnd();
1245         if (i1.inset().asInsetMath()) {
1246                 saveSelection(cur);
1247                 cur.top() = i1;
1248                 if (i1.idx() == i2.idx()) {
1249                         i1.cell().erase(i1.pos(), i2.pos());
1250                         // We may have deleted i1.cell(cur.pos()).
1251                         // Make sure that pos is valid.
1252                         if (cur.pos() > cur.lastpos())
1253                                 cur.pos() = cur.lastpos();
1254                 } else {
1255                         InsetMath * p = i1.asInsetMath();
1256                         Inset::row_type r1, r2;
1257                         Inset::col_type c1, c2;
1258                         region(i1, i2, r1, r2, c1, c2);
1259                         for (Inset::row_type row = r1; row <= r2; ++row)
1260                                 for (Inset::col_type col = c1; col <= c2; ++col)
1261                                         p->cell(p->index(row, col)).clear();
1262                         // We've deleted the whole cell. Only pos 0 is valid.
1263                         cur.pos() = 0;
1264                 }
1265                 // need a valid cursor. (Lgb)
1266                 cur.clearSelection();
1267         } else {
1268                 lyxerr << "can't erase this selection 1" << endl;
1269         }
1270         //lyxerr << "cap::eraseSelection end: " << cur << endl;
1271 }
1272
1273
1274 void selDel(Cursor & cur)
1275 {
1276         //lyxerr << "cap::selDel" << endl;
1277         if (cur.selection())
1278                 eraseSelection(cur);
1279 }
1280
1281
1282 void selClearOrDel(Cursor & cur)
1283 {
1284         //lyxerr << "cap::selClearOrDel" << endl;
1285         if (lyxrc.auto_region_delete)
1286                 selDel(cur);
1287         else
1288                 cur.setSelection(false);
1289 }
1290
1291
1292 docstring grabSelection(Cursor const & cur)
1293 {
1294         if (!cur.selection())
1295                 return docstring();
1296
1297 #if 0
1298         // grab selection by glueing multiple cells together. This is not what
1299         // we want because selections spanning multiple cells will get "&" and "\\"
1300         // seperators.
1301         ostringstream os;
1302         for (DocIterator dit = cur.selectionBegin();
1303              dit != cur.selectionEnd(); dit.forwardPos())
1304                 os << asString(dit.cell());
1305         return os.str();
1306 #endif
1307
1308         CursorSlice i1 = cur.selBegin();
1309         CursorSlice i2 = cur.selEnd();
1310
1311         if (i1.idx() == i2.idx()) {
1312                 if (i1.inset().asInsetMath()) {
1313                         MathData::const_iterator it = i1.cell().begin();
1314                         Buffer * buf = cur.buffer();
1315                         return asString(MathData(buf, it + i1.pos(), it + i2.pos()));
1316                 } else {
1317                         return from_ascii("unknown selection 1");
1318                 }
1319         }
1320
1321         Inset::row_type r1, r2;
1322         Inset::col_type c1, c2;
1323         region(i1, i2, r1, r2, c1, c2);
1324
1325         docstring data;
1326         if (i1.inset().asInsetMath()) {
1327                 for (Inset::row_type row = r1; row <= r2; ++row) {
1328                         if (row > r1)
1329                                 data += "\\\\";
1330                         for (Inset::col_type col = c1; col <= c2; ++col) {
1331                                 if (col > c1)
1332                                         data += '&';
1333                                 data += asString(i1.asInsetMath()->
1334                                         cell(i1.asInsetMath()->index(row, col)));
1335                         }
1336                 }
1337         } else {
1338                 data = from_ascii("unknown selection 2");
1339         }
1340         return data;
1341 }
1342
1343
1344 void dirtyTabularStack(bool b)
1345 {
1346         dirty_tabular_stack_ = b;
1347 }
1348
1349
1350 bool tabularStackDirty()
1351 {
1352         return dirty_tabular_stack_;
1353 }
1354
1355
1356 } // namespace cap
1357 } // namespace lyx