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/InsetCitation.h"
  44 #include "insets/InsetCommand.h"
  45 #include "insets/InsetFlex.h"
  46 #include "insets/InsetGraphics.h"
  47 #include "insets/InsetGraphicsParams.h"
  48 #include "insets/InsetInclude.h"
  49 #include "insets/InsetLabel.h"
  50 #include "insets/InsetTabular.h"
  51
  52 #include "mathed/MathData.h"
  53 #include "mathed/InsetMath.h"
  54 #include "mathed/InsetMathHull.h"
  55 #include "mathed/InsetMathRef.h"
  56 #include "mathed/MathSupport.h"
  57
  58 #include "support/debug.h"
  59 #include "support/docstream.h"
  60 #include "support/gettext.h"
  61 #include "support/lassert.h"
  62 #include "support/limited_stack.h"
  63 #include "support/lstrings.h"
  64 #include "support/lyxalgo.h"
  65 #include "support/TempFile.h"
  66 #include "support/unique_ptr.h"
  67
  68 #include "frontends/alert.h"
  69 #include "frontends/Clipboard.h"
  70 #include "frontends/Selection.h"
  71
  72 #include <string>
  73 #include <tuple>
  74
  75 using namespace std;
  76 using namespace lyx::support;
  77 using lyx::frontend::Clipboard;
  78
  79 namespace lyx {
  80
  81 namespace {
  82
  83 typedef pair<pit_type, int> PitPosPair;
  84
  85 typedef limited_stack<pair<ParagraphList, DocumentClassConstPtr> > CutStack;
  86
  87 CutStack theCuts(10);
  88 // persistent selection, cleared until the next selection
  89 CutStack selectionBuffer(1);
  90 // temporary scratch area
  91 CutStack tempCut(1);
  92
  93 // store whether the tabular stack is newer than the normal copy stack
  94 // FIXME: this is a workaround for bug 1919. Should be removed for 1.5,
  95 // when we (hopefully) have a one-for-all paste mechanism.
  96 bool dirty_tabular_stack_ = false;
  97
  98
  99 bool checkPastePossible(int index)
 100 {
 101         return size_t(index) < theCuts.size() && !theCuts[index].first.empty();
 102 }
 103
 104
 105 struct PasteReturnValue {
 106         PasteReturnValue(pit_type r_pit, pos_type r_pos, bool r_nu) :
 107           pit(r_pit), pos(r_pos), needupdate(r_nu)
 108         {}
 109
 110         pit_type pit;
 111         pos_type pos;
 112         bool needupdate;
 113 };
 114
 115 PasteReturnValue
 116 pasteSelectionHelper(DocIterator const & cur, ParagraphList const & parlist,
 117                      DocumentClassConstPtr oldDocClass, cap::BranchAction branchAction,
 118                      ErrorList & errorlist)
 119 {
 120         Buffer const & buffer = *cur.buffer();
 121         pit_type pit = cur.pit();
 122         pos_type pos = cur.pos();
 123         bool need_update = false;
 124
 125         if (parlist.empty())
 126                 return PasteReturnValue(pit, pos, need_update);
 127
 128         InsetText * target_inset = cur.inset().asInsetText();
 129         if (!target_inset) {
 130                 InsetTabular * it = cur.inset().asInsetTabular();
 131                 target_inset = it ? it->cell(cur.idx())->asInsetText() : 0;
 132         }
 133         LASSERT(target_inset, return PasteReturnValue(pit, pos, need_update));
 134
 135         ParagraphList & pars = target_inset->paragraphs();
 136         LASSERT(pos <= pars[pit].size(),
 137                         return PasteReturnValue(pit, pos, need_update));
 138
 139         // Make a copy of the CaP paragraphs.
 140         ParagraphList insertion = parlist;
 141
 142         // Now remove all out of the pars which is NOT allowed in the
 143         // new environment and set also another font if that is required.
 144
 145         // Convert newline to paragraph break in ParbreakIsNewline
 146         if (target_inset->getLayout().parbreakIsNewline()
 147             || pars[pit].layout().parbreak_is_newline) {
 148                 for (size_t i = 0; i != insertion.size(); ++i) {
 149                         for (pos_type j = 0; j != insertion[i].size(); ++j) {
 150                                 if (insertion[i].isNewline(j)) {
 151                                         // do not track deletion of newline
 152                                         insertion[i].eraseChar(j, false);
 153                                         insertion[i].setInsetOwner(target_inset);
 154                                         breakParagraphConservative(
 155                                                         buffer.params(),
 156                                                         insertion, i, j);
 157                                         break;
 158                                 }
 159                         }
 160                 }
 161         }
 162
 163         // set the paragraphs to plain layout if necessary
 164         DocumentClassConstPtr newDocClass = buffer.params().documentClassPtr();
 165         if (cur.inset().usePlainLayout()) {
 166                 bool forcePlainLayout = target_inset->forcePlainLayout();
 167                 Layout const & plainLayout = newDocClass->plainLayout();
 168                 Layout const & defaultLayout = newDocClass->defaultLayout();
 169                 ParagraphList::iterator const end = insertion.end();
 170                 ParagraphList::iterator par = insertion.begin();
 171                 for (; par != end; ++par) {
 172                         Layout const & parLayout = par->layout();
 173                         if (forcePlainLayout || parLayout == defaultLayout)
 174                                 par->setLayout(plainLayout);
 175                 }
 176         } else {
 177                 // check if we need to reset from plain layout
 178                 Layout const & defaultLayout = newDocClass->defaultLayout();
 179                 Layout const & plainLayout = newDocClass->plainLayout();
 180                 ParagraphList::iterator const end = insertion.end();
 181                 ParagraphList::iterator par = insertion.begin();
 182                 for (; par != end; ++par) {
 183                         Layout const & parLayout = par->layout();
 184                         if (parLayout == plainLayout)
 185                                 par->setLayout(defaultLayout);
 186                 }
 187         }
 188
 189         InsetText in(cur.buffer());
 190         // Make sure there is no class difference.
 191         in.paragraphs().clear();
 192         // This works without copying any paragraph data because we have
 193         // a specialized swap method for ParagraphList. This is important
 194         // since we store pointers to insets at some places and we don't
 195         // want to invalidate them.
 196         insertion.swap(in.paragraphs());
 197         cap::switchBetweenClasses(oldDocClass, newDocClass, in, errorlist);
 198         insertion.swap(in.paragraphs());
 199
 200         ParagraphList::iterator tmpbuf = insertion.begin();
 201         int depth_delta = pars[pit].params().depth() - tmpbuf->params().depth();
 202
 203         depth_type max_depth = pars[pit].getMaxDepthAfter();
 204
 205         for (; tmpbuf != insertion.end(); ++tmpbuf) {
 206                 // If we have a negative jump so that the depth would
 207                 // go below 0 depth then we have to redo the delta to
 208                 // this new max depth level so that subsequent
 209                 // paragraphs are aligned correctly to this paragraph
 210                 // at level 0.
 211                 if (int(tmpbuf->params().depth()) + depth_delta < 0)
 212                         depth_delta = 0;
 213
 214                 // Set the right depth so that we are not too deep or shallow.
 215                 tmpbuf->params().depth(tmpbuf->params().depth() + depth_delta);
 216                 if (tmpbuf->params().depth() > max_depth)
 217                         tmpbuf->params().depth(max_depth);
 218
 219                 // Set max_depth for the next paragraph
 220                 max_depth = tmpbuf->getMaxDepthAfter();
 221
 222                 // Set the inset owner of this paragraph.
 223                 tmpbuf->setInsetOwner(target_inset);
 224                 for (pos_type i = 0; i < tmpbuf->size(); ++i) {
 225                         // do not track deletion of invalid insets
 226                         if (Inset * inset = tmpbuf->getInset(i))
 227                                 if (!target_inset->insetAllowed(inset->lyxCode()))
 228                                         tmpbuf->eraseChar(i--, false);
 229                 }
 230
 231                 tmpbuf->setChange(Change(buffer.params().track_changes ?
 232                                          Change::INSERTED : Change::UNCHANGED));
 233         }
 234
 235         bool const empty = pars[pit].empty();
 236         if (!empty) {
 237                 // Make the buf exactly the same layout as the cursor
 238                 // paragraph.
 239                 insertion.begin()->makeSameLayout(pars[pit]);
 240         }
 241
 242         // Prepare the paragraphs and insets for insertion.
 243         insertion.swap(in.paragraphs());
 244
 245         InsetIterator const i_end = inset_iterator_end(in);
 246         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 247                 // Even though this will also be done later, it has to be done here
 248                 // since some inset might going to try to access
 249                 // the buffer() member.
 250                 it->setBuffer(const_cast<Buffer &>(buffer));
 251                 switch (it->lyxCode()) {
 252
 253                 case MATH_HULL_CODE: {
 254                         // check for equation labels and resolve duplicates
 255                         InsetMathHull * ins = it->asInsetMath()->asHullInset();
 256                         std::vector<InsetLabel *> labels = ins->getLabels();
 257                         for (size_t i = 0; i != labels.size(); ++i) {
 258                                 if (!labels[i])
 259                                         continue;
 260                                 InsetLabel * lab = labels[i];
 261                                 docstring const oldname = lab->getParam("name");
 262                                 lab->updateLabel(oldname);
 263                                 // We need to update the buffer reference cache.
 264                                 need_update = true;
 265                                 docstring const newname = lab->getParam("name");
 266                                 if (oldname == newname)
 267                                         continue;
 268                                 // adapt the references
 269                                 for (InsetIterator itt = inset_iterator_begin(in);
 270                                       itt != i_end; ++itt) {
 271                                         if (itt->lyxCode() == REF_CODE) {
 272                                                 InsetCommand * ref = itt->asInsetCommand();
 273                                                 if (ref->getParam("reference") == oldname)
 274                                                         ref->setParam("reference", newname);
 275                                         } else if (itt->lyxCode() == MATH_REF_CODE) {
 276                                                 InsetMathRef * mi = itt->asInsetMath()->asRefInset();
 277                                                 // this is necessary to prevent an uninitialized
 278                                                 // buffer when the RefInset is in a MathBox.
 279                                                 // FIXME audit setBuffer calls
 280                                                 mi->setBuffer(const_cast<Buffer &>(buffer));
 281                                                 if (mi->getTarget() == oldname)
 282                                                         mi->changeTarget(newname);
 283                                         }
 284                                 }
 285                         }
 286                         break;
 287                 }
 288
 289                 case LABEL_CODE: {
 290                         // check for duplicates
 291                         InsetLabel & lab = static_cast<InsetLabel &>(*it);
 292                         docstring const oldname = lab.getParam("name");
 293                         lab.updateLabel(oldname);
 294                         // We need to update the buffer reference cache.
 295                         need_update = true;
 296                         docstring const newname = lab.getParam("name");
 297                         if (oldname == newname)
 298                                 break;
 299                         // adapt the references
 300                         for (InsetIterator itt = inset_iterator_begin(in); itt != i_end; ++itt) {
 301                                 if (itt->lyxCode() == REF_CODE) {
 302                                         InsetCommand & ref = static_cast<InsetCommand &>(*itt);
 303                                         if (ref.getParam("reference") == oldname)
 304                                                 ref.setParam("reference", newname);
 305                                 } else if (itt->lyxCode() == MATH_REF_CODE) {
 306                                         InsetMathRef * mi = itt->asInsetMath()->asRefInset();
 307                                         // this is necessary to prevent an uninitialized
 308                                         // buffer when the RefInset is in a MathBox.
 309                                         // FIXME audit setBuffer calls
 310                                         mi->setBuffer(const_cast<Buffer &>(buffer));
 311                                         if (mi->getTarget() == oldname)
 312                                                 mi->changeTarget(newname);
 313                                 }
 314                         }
 315                         break;
 316                 }
 317
 318                 case INCLUDE_CODE: {
 319                         InsetInclude & inc = static_cast<InsetInclude &>(*it);
 320                         inc.updateCommand();
 321                         // We need to update the list of included files.
 322                         need_update = true;
 323                         break;
 324                 }
 325
 326                 case CITE_CODE: {
 327                         InsetCitation & cit = static_cast<InsetCitation &>(*it);
 328                         // This actually only needs to be done if the cite engine
 329                         // differs, but we do it in general.
 330                         cit.redoLabel();
 331                         // We need to update the list of citations.
 332                         need_update = true;
 333                         break;
 334                 }
 335
 336                 case BIBITEM_CODE: {
 337                         // check for duplicates
 338                         InsetBibitem & bib = static_cast<InsetBibitem &>(*it);
 339                         docstring const oldkey = bib.getParam("key");
 340                         bib.updateCommand(oldkey, false);
 341                         // We need to update the buffer reference cache.
 342                         need_update = true;
 343                         docstring const newkey = bib.getParam("key");
 344                         if (oldkey == newkey)
 345                                 break;
 346                         // adapt the references
 347                         for (InsetIterator itt = inset_iterator_begin(in);
 348                              itt != i_end; ++itt) {
 349                                 if (itt->lyxCode() == CITE_CODE) {
 350                                         InsetCommand * ref = itt->asInsetCommand();
 351                                         if (ref->getParam("key") == oldkey)
 352                                                 ref->setParam("key", newkey);
 353                                 }
 354                         }
 355                         break;
 356                 }
 357
 358                 case BRANCH_CODE: {
 359                         // check if branch is known to target buffer
 360                         // or its master
 361                         InsetBranch & br = static_cast<InsetBranch &>(*it);
 362                         docstring const name = br.branch();
 363                         if (name.empty())
 364                                 break;
 365                         bool const is_child = (&buffer != buffer.masterBuffer());
 366                         BranchList branchlist = buffer.params().branchlist();
 367                         if ((!is_child && branchlist.find(name))
 368                             || (is_child && (branchlist.find(name)
 369                                 || buffer.masterBuffer()->params().branchlist().find(name))))
 370                                 break;
 371                         switch(branchAction) {
 372                         case cap::BRANCH_ADD: {
 373                                 // This is for a temporary buffer, so simply create the branch.
 374                                 // Must not use lyx::dispatch(), since tmpbuffer has no view.
 375                                 DispatchResult dr;
 376                                 const_cast<Buffer&>(buffer).dispatch(FuncRequest(LFUN_BRANCH_ADD, name), dr);
 377                                 break;
 378                         }
 379                         case cap::BRANCH_ASK: {
 380                                 docstring text = bformat(
 381                                         _("The pasted branch \"%1$s\" is undefined.\n"
 382                                           "Do you want to add it to the document's branch list?"),
 383                                         name);
 384                                 if (frontend::Alert::prompt(_("Unknown branch"),
 385                                           text, 0, 1, _("&Add"), _("&Don't Add")) != 0)
 386                                         break;
 387                                 lyx::dispatch(FuncRequest(LFUN_BRANCH_ADD, name));
 388                                 break;
 389                         }
 390                         case cap::BRANCH_IGNORE:
 391                                 break;
 392                         }
 393                         // We need to update the list of branches.
 394                         need_update = true;
 395                         break;
 396                 }
 397
 398                 default:
 399                         break; // nothing
 400                 }
 401         }
 402         insertion.swap(in.paragraphs());
 403
 404         // Split the paragraph for inserting the buf if necessary.
 405         if (!empty)
 406                 breakParagraphConservative(buffer.params(), pars, pit, pos);
 407
 408         // Paste it!
 409         if (empty) {
 410                 pars.insert(lyx::next(pars.begin(), pit),
 411                             insertion.begin(),
 412                             insertion.end());
 413
 414                 // merge the empty par with the last par of the insertion
 415                 mergeParagraph(buffer.params(), pars,
 416                                pit + insertion.size() - 1);
 417         } else {
 418                 pars.insert(lyx::next(pars.begin(), pit + 1),
 419                             insertion.begin(),
 420                             insertion.end());
 421
 422                 // merge the first par of the insertion with the current par
 423                 mergeParagraph(buffer.params(), pars, pit);
 424         }
 425
 426         // Store the new cursor position.
 427         pit_type last_paste = pit + insertion.size() - 1;
 428         pit_type startpit = pit;
 429         pit = last_paste;
 430         pos = pars[last_paste].size();
 431
 432         // FIXME Should we do it here, or should we let updateBuffer() do it?
 433         // Set paragraph buffers. It's important to do this right away
 434         // before something calls Inset::buffer() and causes a crash.
 435         for (pit_type p = startpit; p <= pit; ++p)
 436                 pars[p].setInsetBuffers(const_cast<Buffer &>(buffer));
 437
 438         // Join (conditionally) last pasted paragraph with next one, i.e.,
 439         // the tail of the spliced document paragraph
 440         if (!empty && last_paste + 1 != pit_type(pars.size())) {
 441                 if (pars[last_paste + 1].hasSameLayout(pars[last_paste])) {
 442                         mergeParagraph(buffer.params(), pars, last_paste);
 443                 } else if (pars[last_paste + 1].empty()) {
 444                         pars[last_paste + 1].makeSameLayout(pars[last_paste]);
 445                         mergeParagraph(buffer.params(), pars, last_paste);
 446                 } else if (pars[last_paste].empty()) {
 447                         pars[last_paste].makeSameLayout(pars[last_paste + 1]);
 448                         mergeParagraph(buffer.params(), pars, last_paste);
 449                 } else {
 450                         pars[last_paste + 1].stripLeadingSpaces(buffer.params().track_changes);
 451                         ++last_paste;
 452                 }
 453         }
 454
 455         return PasteReturnValue(pit, pos, need_update);
 456 }
 457
 458
 459 PitPosPair eraseSelectionHelper(BufferParams const & params,
 460         ParagraphList & pars,
 461         pit_type startpit, pit_type endpit,
 462         int startpos, int endpos)
 463 {
 464         // Start of selection is really invalid.
 465         if (startpit == pit_type(pars.size()) ||
 466             (startpos > pars[startpit].size()))
 467                 return PitPosPair(endpit, endpos);
 468
 469         // Start and end is inside same paragraph
 470         if (endpit == pit_type(pars.size()) || startpit == endpit) {
 471                 endpos -= pars[startpit].eraseChars(startpos, endpos, params.track_changes);
 472                 return PitPosPair(endpit, endpos);
 473         }
 474
 475         for (pit_type pit = startpit; pit != endpit + 1;) {
 476                 pos_type const left  = (pit == startpit ? startpos : 0);
 477                 pos_type right = (pit == endpit ? endpos : pars[pit].size() + 1);
 478                 bool const merge = pars[pit].isMergedOnEndOfParDeletion(params.track_changes);
 479
 480                 // Logically erase only, including the end-of-paragraph character
 481                 pars[pit].eraseChars(left, right, params.track_changes);
 482
 483                 // Separate handling of paragraph break:
 484                 if (merge && pit != endpit &&
 485                     (pit + 1 != endpit
 486                      || pars[pit].hasSameLayout(pars[endpit])
 487                      || pars[endpit].size() == endpos)) {
 488                         if (pit + 1 == endpit)
 489                                 endpos += pars[pit].size();
 490                         mergeParagraph(params, pars, pit);
 491                         --endpit;
 492                 } else
 493                         ++pit;
 494         }
 495
 496         // Ensure legal cursor pos:
 497         endpit = startpit;
 498         endpos = startpos;
 499         return PitPosPair(endpit, endpos);
 500 }
 501
 502
 503 Buffer * copyToTempBuffer(ParagraphList const & paragraphs, DocumentClassConstPtr docclass)
 504 {
 505         // This used to need to be static to avoid a memory leak. It no longer needs
 506         // to be so, but the alternative is to construct a new one of these (with a
 507         // new temporary directory, etc) every time, and then to destroy it. So maybe
 508         // it's worth just keeping this one around.
 509         static TempFile tempfile("clipboard.internal");
 510         tempfile.setAutoRemove(false);
 511         // The initialization of staticbuffer is thread-safe. Using a lambda
 512         // guarantees that the properties are set only once.
 513         static Buffer * staticbuffer = [&](){
 514                 Buffer * b =
 515                         theBufferList().newInternalBuffer(tempfile.name().absFileName());
 516                 b->setUnnamed(true);
 517                 b->inset().setBuffer(*b);
 518                 //initialize staticbuffer with b
 519                 return b;
 520         }();
 521         // Use a clone for the complicated stuff so that we do not need to clean
 522         // up in order to avoid a crash.
 523         Buffer * buffer = staticbuffer->cloneBufferOnly();
 524         LASSERT(buffer, return 0);
 525
 526         // This needs doing every time.
 527         // Since setDocumentClass() causes deletion of the old document class
 528         // we need to reset all layout pointers in paragraphs (otherwise they
 529         // would be dangling).
 530         ParIterator const end = buffer->par_iterator_end();
 531         for (ParIterator it = buffer->par_iterator_begin(); it != end; ++it) {
 532                 docstring const name = it->layout().name();
 533                 if (docclass->hasLayout(name))
 534                         it->setLayout((*docclass)[name]);
 535                 else
 536                         it->setPlainOrDefaultLayout(*docclass);
 537         }
 538         buffer->params().setDocumentClass(docclass);
 539
 540         // we will use pasteSelectionHelper to copy the paragraphs into the
 541         // temporary Buffer, since it does a lot of things to fix them up.
 542         DocIterator dit = doc_iterator_begin(buffer, &buffer->inset());
 543         ErrorList el;
 544         pasteSelectionHelper(dit, paragraphs, docclass, cap::BRANCH_ADD, el);
 545
 546         return buffer;
 547 }
 548
 549
 550 void putClipboard(ParagraphList const & paragraphs,
 551         DocumentClassConstPtr docclass, docstring const & plaintext)
 552 {
 553         Buffer * buffer = copyToTempBuffer(paragraphs, docclass);
 554         if (!buffer) // already asserted in copyToTempBuffer()
 555                 return;
 556
 557         // We don't want to produce images that are not used. Therefore,
 558         // output formulas as MathML. Even if this is not understood by all
 559         // applications, the number that can parse it should go up in the future.
 560         buffer->params().html_math_output = BufferParams::MathML;
 561
 562         // Make sure MarkAsExporting is deleted before buffer is
 563         {
 564                 // The Buffer is being used to export. This is necessary so that the
 565                 // updateMacros call will record the needed information.
 566                 MarkAsExporting mex(buffer);
 567
 568                 buffer->updateBuffer(Buffer::UpdateMaster, OutputUpdate);
 569                 buffer->updateMacros();
 570                 buffer->updateMacroInstances(OutputUpdate);
 571
 572                 // LyX's own format
 573                 string lyx;
 574                 ostringstream oslyx;
 575                 if (buffer->write(oslyx))
 576                         lyx = oslyx.str();
 577
 578                 // XHTML format
 579                 odocstringstream oshtml;
 580                 OutputParams runparams(encodings.fromLyXName("utf8"));
 581                 // We do not need to produce images, etc.
 582                 runparams.dryrun = true;
 583                 // We are not interested in errors (bug 8866)
 584                 runparams.silent = true;
 585                 buffer->writeLyXHTMLSource(oshtml, runparams, Buffer::FullSource);
 586
 587                 theClipboard().put(lyx, oshtml.str(), plaintext);
 588         }
 589
 590         // Save that memory
 591         delete buffer;
 592 }
 593
 594
 595 /// return true if the whole ParagraphList is deleted
 596 static bool isFullyDeleted(ParagraphList const & pars)
 597 {
 598         pit_type const pars_size = static_cast<pit_type>(pars.size());
 599
 600         // check all paragraphs
 601         for (pit_type pit = 0; pit < pars_size; ++pit) {
 602                 if (!pars[pit].empty())   // prevent assertion failure
 603                         if (!pars[pit].isDeleted(0, pars[pit].size()))
 604                                 return false;
 605         }
 606         return true;
 607 }
 608
 609
 610 void copySelectionHelper(Buffer const & buf, Text const & text,
 611         pit_type startpit, pit_type endpit,
 612         int start, int end, DocumentClassConstPtr dc, CutStack & cutstack)
 613 {
 614         ParagraphList const & pars = text.paragraphs();
 615
 616         // In most of these cases, we can try to recover.
 617         LASSERT(0 <= start, start = 0);
 618         LASSERT(start <= pars[startpit].size(), start = pars[startpit].size());
 619         LASSERT(0 <= end, end = 0);
 620         LASSERT(end <= pars[endpit].size(), end = pars[endpit].size());
 621         LASSERT(startpit != endpit || start <= end, return);
 622
 623         // Clone the paragraphs within the selection.
 624         ParagraphList copy_pars(lyx::next(pars.begin(), startpit),
 625                                 lyx::next(pars.begin(), endpit + 1));
 626
 627         // Remove the end of the last paragraph; afterwards, remove the
 628         // beginning of the first paragraph. Keep this order - there may only
 629         // be one paragraph!  Do not track deletions here; this is an internal
 630         // action not visible to the user
 631
 632         Paragraph & back = copy_pars.back();
 633         back.eraseChars(end, back.size(), false);
 634         Paragraph & front = copy_pars.front();
 635         front.eraseChars(0, start, false);
 636
 637         ParagraphList::iterator it = copy_pars.begin();
 638         ParagraphList::iterator it_end = copy_pars.end();
 639
 640         for (; it != it_end; ++it) {
 641                 // Since we have a copy of the paragraphs, the insets
 642                 // do not have a proper buffer reference. It makes
 643                 // sense to add them temporarily, because the
 644                 // operations below depend on that (acceptChanges included).
 645                 it->setInsetBuffers(const_cast<Buffer &>(buf));
 646                 // PassThru paragraphs have the Language
 647                 // latex_language. This is invalid for others, so we
 648                 // need to change it to the buffer language.
 649                 if (it->isPassThru())
 650                         it->changeLanguage(buf.params(),
 651                                            latex_language, buf.language());
 652         }
 653
 654         // do not copy text (also nested in insets) which is marked as
 655         // deleted, unless the whole selection was deleted
 656         if (!isFullyDeleted(copy_pars))
 657                 acceptChanges(copy_pars, buf.params());
 658         else
 659                 rejectChanges(copy_pars, buf.params());
 660
 661
 662         // do some final cleanup now, to make sure that the paragraphs
 663         // are not linked to something else.
 664         it = copy_pars.begin();
 665         for (; it != it_end; ++it) {
 666                 it->resetBuffer();
 667                 it->setInsetOwner(0);
 668         }
 669
 670         cutstack.push(make_pair(copy_pars, dc));
 671 }
 672
 673 } // namespace
 674
 675
 676 namespace cap {
 677
 678 void region(CursorSlice const & i1, CursorSlice const & i2,
 679             Inset::row_type & r1, Inset::row_type & r2,
 680             Inset::col_type & c1, Inset::col_type & c2)
 681 {
 682         Inset & p = i1.inset();
 683         c1 = p.col(i1.idx());
 684         c2 = p.col(i2.idx());
 685         if (c1 > c2)
 686                 swap(c1, c2);
 687         r1 = p.row(i1.idx());
 688         r2 = p.row(i2.idx());
 689         if (r1 > r2)
 690                 swap(r1, r2);
 691 }
 692
 693
 694 docstring grabAndEraseSelection(Cursor & cur)
 695 {
 696         if (!cur.selection())
 697                 return docstring();
 698         docstring res = grabSelection(cur);
 699         eraseSelection(cur);
 700         return res;
 701 }
 702
 703
 704 bool reduceSelectionToOneCell(CursorData & cur)
 705 {
 706         if (!cur.selection() || !cur.inMathed())
 707                 return false;
 708
 709         CursorSlice i1 = cur.selBegin();
 710         CursorSlice i2 = cur.selEnd();
 711         if (!i1.inset().asInsetMath())
 712                 return false;
 713
 714         // the easy case: do nothing if only one cell is selected
 715         if (i1.idx() == i2.idx())
 716                 return true;
 717
 718         cur.top().pos() = 0;
 719         cur.resetAnchor();
 720         cur.top().pos() = cur.top().lastpos();
 721
 722         return true;
 723 }
 724
 725
 726 bool multipleCellsSelected(CursorData const & cur)
 727 {
 728         if (!cur.selection() || !cur.inMathed())
 729                 return false;
 730
 731         CursorSlice i1 = cur.selBegin();
 732         CursorSlice i2 = cur.selEnd();
 733         if (!i1.inset().asInsetMath())
 734                 return false;
 735
 736         if (i1.idx() == i2.idx())
 737                 return false;
 738
 739         return true;
 740 }
 741
 742
 743 void switchBetweenClasses(DocumentClassConstPtr oldone,
 744                 DocumentClassConstPtr newone, InsetText & in, ErrorList & errorlist)
 745 {
 746         errorlist.clear();
 747
 748         LBUFERR(!in.paragraphs().empty());
 749         if (oldone == newone)
 750                 return;
 751
 752         DocumentClass const & oldtc = *oldone;
 753         DocumentClass const & newtc = *newone;
 754
 755         // layouts
 756         ParIterator it = par_iterator_begin(in);
 757         ParIterator end = par_iterator_end(in);
 758         // for remembering which layouts we've had to add
 759         set<docstring> newlayouts;
 760         for (; it != end; ++it) {
 761                 docstring const name = it->layout().name();
 762
 763                 // the pasted text will keep their own layout name. If this layout does
 764                 // not exist in the new document, it will behave like a standard layout.
 765                 bool const added_one = newtc.addLayoutIfNeeded(name);
 766                 if (added_one)
 767                         newlayouts.insert(name);
 768
 769                 if (added_one || newlayouts.find(name) != newlayouts.end()) {
 770                         // Warn the user.
 771                         docstring const s = bformat(_("Layout `%1$s' was not found."), name);
 772                         errorlist.push_back(ErrorItem(_("Layout Not Found"), s,
 773                                                       {it->id(), 0}, {it->id(), -1}));
 774                 }
 775
 776                 if (in.usePlainLayout())
 777                         it->setLayout(newtc.plainLayout());
 778                 else
 779                         it->setLayout(newtc[name]);
 780         }
 781
 782         // character styles and hidden table cells
 783         InsetIterator const i_end = inset_iterator_end(in);
 784         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 785                 InsetCode const code = it->lyxCode();
 786                 if (code == FLEX_CODE) {
 787                         // FIXME: Should we verify all InsetCollapsible?
 788                         docstring const layoutName = it->layoutName();
 789                         docstring const & n = newone->insetLayout(layoutName).name();
 790                         bool const is_undefined = n.empty() ||
 791                                 n == DocumentClass::plainInsetLayout().name();
 792                         if (!is_undefined)
 793                                 continue;
 794
 795                         // The flex inset is undefined in newtc
 796                         docstring const oldname = from_utf8(oldtc.name());
 797                         docstring const newname = from_utf8(newtc.name());
 798                         docstring s;
 799                         if (oldname == newname)
 800                                 s = bformat(_("Flex inset %1$s is undefined after "
 801                                         "reloading `%2$s' layout."), layoutName, oldname);
 802                         else
 803                                 s = bformat(_("Flex inset %1$s is undefined because of "
 804                                         "conversion from `%2$s' layout to `%3$s'."),
 805                                         layoutName, oldname, newname);
 806                         // To warn the user that something had to be done.
 807                         errorlist.push_back(ErrorItem(
 808                                                       _("Undefined flex inset"), s,
 809                                                       {it.paragraph().id(), it.pos()},
 810                                                       {it.paragraph().id(), it.pos()+1}));
 811                 } else if (code == TABULAR_CODE) {
 812                         // The recursion above does not catch paragraphs in "hidden" cells,
 813                         // i.e., ones that are part of a multirow or multicolum. So we need
 814                         // to handle those separately.
 815                         // This is the cause of bug #9049.
 816                         InsetTabular * table = it->asInsetTabular();
 817                         table->setLayoutForHiddenCells(newtc);
 818                 }
 819         }
 820 }
 821
 822
 823 vector<docstring> availableSelections(Buffer const * buf)
 824 {
 825         vector<docstring> selList;
 826         if (!buf)
 827                 return selList;
 828
 829         CutStack::const_iterator cit = theCuts.begin();
 830         CutStack::const_iterator end = theCuts.end();
 831         for (; cit != end; ++cit) {
 832                 // we do not use cit-> here because gcc 2.9x does not
 833                 // like it (JMarc)
 834                 ParagraphList const & pars = (*cit).first;
 835                 docstring textSel;
 836                 ParagraphList::const_iterator pit = pars.begin();
 837                 ParagraphList::const_iterator pend = pars.end();
 838                 for (; pit != pend; ++pit) {
 839                         Paragraph par(*pit, 0, 46);
 840                         // adapt paragraph to current buffer.
 841                         par.setInsetBuffers(const_cast<Buffer &>(*buf));
 842                         textSel += par.asString(AS_STR_INSETS);
 843                         if (textSel.size() > 45) {
 844                                 support::truncateWithEllipsis(textSel,45);
 845                                 break;
 846                         }
 847                 }
 848                 selList.push_back(textSel);
 849         }
 850
 851         return selList;
 852 }
 853
 854
 855 size_type numberOfSelections()
 856 {
 857         return theCuts.size();
 858 }
 859
 860 namespace {
 861
 862 void cutSelectionHelper(Cursor & cur, CutStack & cuts, bool doclear, bool realcut, bool putclip)
 863 {
 864         // This doesn't make sense, if there is no selection
 865         if (!cur.selection())
 866                 return;
 867
 868         // OK, we have a selection. This is always between cur.selBegin()
 869         // and cur.selEnd()
 870
 871         if (cur.inTexted()) {
 872                 Text * text = cur.text();
 873                 LBUFERR(text);
 874
 875                 saveSelection(cur);
 876
 877                 // make sure that the depth behind the selection are restored, too
 878                 cur.recordUndoSelection();
 879                 pit_type begpit = cur.selBegin().pit();
 880                 pit_type endpit = cur.selEnd().pit();
 881
 882                 int endpos = cur.selEnd().pos();
 883
 884                 BufferParams const & bp = cur.buffer()->params();
 885                 if (realcut) {
 886                         copySelectionHelper(*cur.buffer(),
 887                                 *text,
 888                                 begpit, endpit,
 889                                 cur.selBegin().pos(), endpos,
 890                                 bp.documentClassPtr(), cuts);
 891                         // Stuff what we got on the clipboard.
 892                         // Even if there is no selection.
 893                         if (putclip)
 894                                 putClipboard(cuts[0].first, cuts[0].second,
 895                                              cur.selectionAsString(true));
 896                 }
 897
 898                 if (begpit != endpit)
 899                         cur.screenUpdateFlags(Update::Force | Update::FitCursor);
 900
 901                 tie(endpit, endpos) =
 902                         eraseSelectionHelper(bp, text->paragraphs(), begpit, endpit,
 903                                              cur.selBegin().pos(), endpos);
 904
 905                 // cutSelection can invalidate the cursor so we need to set
 906                 // it anew. (Lgb)
 907                 // we prefer the end for when tracking changes
 908                 cur.pos() = endpos;
 909                 cur.pit() = endpit;
 910
 911                 // sometimes necessary
 912                 if (doclear
 913                         && text->paragraphs()[begpit].stripLeadingSpaces(bp.track_changes))
 914                         cur.fixIfBroken();
 915
 916                 // need a valid cursor. (Lgb)
 917                 cur.clearSelection();
 918
 919                 // After a cut operation, we must make sure that the Buffer is updated
 920                 // because some further operation might need updated label information for
 921                 // example. So we cannot just use "cur.forceBufferUpdate()" here.
 922                 // This fixes #7071.
 923                 cur.buffer()->updateBuffer();
 924
 925                 // tell tabular that a recent copy happened
 926                 dirtyTabularStack(false);
 927         }
 928
 929         if (cur.inMathed()) {
 930                 if (cur.selBegin().idx() != cur.selEnd().idx()) {
 931                         // The current selection spans more than one cell.
 932                         // Record all cells
 933                         cur.recordUndoInset();
 934                 } else {
 935                         // Record only the current cell to avoid a jumping
 936                         // cursor after undo
 937                         cur.recordUndo();
 938                 }
 939                 if (realcut)
 940                         copySelection(cur);
 941                 eraseSelection(cur);
 942         }
 943 }
 944
 945 } // namespace
 946
 947 void cutSelection(Cursor & cur, bool doclear, bool realcut)
 948 {
 949         cutSelectionHelper(cur, theCuts, doclear, realcut, true);
 950 }
 951
 952
 953 void cutSelectionToTemp(Cursor & cur, bool doclear, bool realcut)
 954 {
 955         cutSelectionHelper(cur, tempCut, doclear, realcut, false);
 956 }
 957
 958
 959 void copySelection(Cursor const & cur)
 960 {
 961         copySelection(cur, cur.selectionAsString(true));
 962 }
 963
 964
 965 void copyInset(Cursor const & cur, Inset * inset, docstring const & plaintext)
 966 {
 967         ParagraphList pars;
 968         Paragraph par;
 969         BufferParams const & bp = cur.buffer()->params();
 970         par.setLayout(bp.documentClass().plainLayout());
 971         Font font(inherit_font, bp.language);
 972         par.insertInset(0, inset, font, Change(Change::UNCHANGED));
 973         pars.push_back(par);
 974         theCuts.push(make_pair(pars, bp.documentClassPtr()));
 975
 976         // stuff the selection onto the X clipboard, from an explicit copy request
 977         putClipboard(theCuts[0].first, theCuts[0].second, plaintext);
 978 }
 979
 980
 981 namespace {
 982
 983 void copySelectionToStack(CursorData const & cur, CutStack & cutstack)
 984 {
 985         // this doesn't make sense, if there is no selection
 986         if (!cur.selection())
 987                 return;
 988
 989         // copySelection can not yet handle the case of cross idx selection
 990         if (cur.selBegin().idx() != cur.selEnd().idx())
 991                 return;
 992
 993         if (cur.inTexted()) {
 994                 Text * text = cur.text();
 995                 LBUFERR(text);
 996                 // ok we have a selection. This is always between cur.selBegin()
 997                 // and sel_end cursor
 998                 copySelectionHelper(*cur.buffer(), *text,
 999                                     cur.selBegin().pit(), cur.selEnd().pit(),
1000                                     cur.selBegin().pos(), cur.selEnd().pos(),
1001                                     cur.buffer()->params().documentClassPtr(),
1002                                     cutstack);
1003                 // Reset the dirty_tabular_stack_ flag only when something
1004                 // is copied to the clipboard (not to the selectionBuffer).
1005                 if (&cutstack == &theCuts)
1006                         dirtyTabularStack(false);
1007         }
1008
1009         if (cur.inMathed()) {
1010                 //lyxerr << "copySelection in mathed" << endl;
1011                 ParagraphList pars;
1012                 Paragraph par;
1013                 BufferParams const & bp = cur.buffer()->params();
1014                 // FIXME This should be the plain layout...right?
1015                 par.setLayout(bp.documentClass().plainLayout());
1016                 par.insert(0, grabSelection(cur), Font(), Change(Change::UNCHANGED));
1017                 pars.push_back(par);
1018                 cutstack.push(make_pair(pars, bp.documentClassPtr()));
1019         }
1020 }
1021
1022 } // namespace
1023
1024
1025 void copySelectionToStack()
1026 {
1027         if (!selectionBuffer.empty())
1028                 theCuts.push(selectionBuffer[0]);
1029 }
1030
1031
1032 void copySelection(Cursor const & cur, docstring const & plaintext)
1033 {
1034         // In tablemode, because copy and paste actually use special table stack
1035         // we do not attempt to get selected paragraphs under cursor. Instead, a
1036         // paragraph with the plain text version is generated so that table cells
1037         // can be pasted as pure text somewhere else.
1038         if (cur.selBegin().idx() != cur.selEnd().idx()) {
1039                 ParagraphList pars;
1040                 Paragraph par;
1041                 BufferParams const & bp = cur.buffer()->params();
1042                 par.setLayout(bp.documentClass().plainLayout());
1043                 par.insert(0, plaintext, Font(), Change(Change::UNCHANGED));
1044                 pars.push_back(par);
1045                 theCuts.push(make_pair(pars, bp.documentClassPtr()));
1046         } else {
1047                 copySelectionToStack(cur, theCuts);
1048         }
1049
1050         // stuff the selection onto the X clipboard, from an explicit copy request
1051         putClipboard(theCuts[0].first, theCuts[0].second, plaintext);
1052 }
1053
1054
1055 void saveSelection(Cursor const & cur)
1056 {
1057         // This function is called, not when a selection is formed, but when
1058         // a selection is cleared. Therefore, multiple keyboard selection
1059         // will not repeatively trigger this function (bug 3877).
1060         if (cur.selection()
1061             && cur.selBegin() == cur.bv().cursor().selBegin()
1062             && cur.selEnd() == cur.bv().cursor().selEnd()) {
1063                 LYXERR(Debug::SELECTION, "saveSelection: '" << cur.selectionAsString(true) << "'");
1064                 copySelectionToStack(cur, selectionBuffer);
1065         }
1066 }
1067
1068
1069 bool selection()
1070 {
1071         return !selectionBuffer.empty();
1072 }
1073
1074
1075 void clearSelection()
1076 {
1077         selectionBuffer.clear();
1078 }
1079
1080
1081 void clearCutStack()
1082 {
1083         theCuts.clear();
1084         tempCut.clear();
1085 }
1086
1087
1088 docstring selection(size_t sel_index, DocumentClassConstPtr docclass)
1089 {
1090         if (sel_index >= theCuts.size())
1091                 return docstring();
1092
1093         unique_ptr<Buffer> buffer(copyToTempBuffer(theCuts[sel_index].first,
1094                                                    docclass));
1095         if (!buffer)
1096                 return docstring();
1097
1098         return buffer->paragraphs().back().asString(AS_STR_INSETS | AS_STR_NEWLINES);
1099 }
1100
1101
1102 void pasteParagraphList(Cursor & cur, ParagraphList const & parlist,
1103                                                 DocumentClassConstPtr docclass, ErrorList & errorList,
1104                                                 cap::BranchAction branchAction)
1105 {
1106         if (cur.inTexted()) {
1107                 Text * text = cur.text();
1108                 LBUFERR(text);
1109
1110                 PasteReturnValue prv =
1111                         pasteSelectionHelper(cur, parlist, docclass, branchAction, errorList);
1112                 cur.forceBufferUpdate();
1113                 cur.clearSelection();
1114                 text->setCursor(cur, prv.pit, prv.pos);
1115         }
1116
1117         // mathed is handled in InsetMathNest/InsetMathGrid
1118         LATTEST(!cur.inMathed());
1119 }
1120
1121
1122 bool pasteFromStack(Cursor & cur, ErrorList & errorList, size_t sel_index)
1123 {
1124         // this does not make sense, if there is nothing to paste
1125         if (!checkPastePossible(sel_index))
1126                 return false;
1127
1128         cur.recordUndo();
1129         pasteParagraphList(cur, theCuts[sel_index].first,
1130                            theCuts[sel_index].second, errorList, BRANCH_ASK);
1131         return true;
1132 }
1133
1134
1135 bool pasteFromTemp(Cursor & cur, ErrorList & errorList)
1136 {
1137         // this does not make sense, if there is nothing to paste
1138         if (tempCut.empty() || tempCut[0].first.empty())
1139                 return false;
1140
1141         cur.recordUndo();
1142         pasteParagraphList(cur, tempCut[0].first,
1143                            tempCut[0].second, errorList, BRANCH_IGNORE);
1144         return true;
1145 }
1146
1147
1148 bool pasteClipboardText(Cursor & cur, ErrorList & errorList, bool asParagraphs,
1149                         Clipboard::TextType type)
1150 {
1151         // Use internal clipboard if it is the most recent one
1152         // This overrides asParagraphs and type on purpose!
1153         if (theClipboard().isInternal())
1154                 return pasteFromStack(cur, errorList, 0);
1155
1156         // First try LyX format
1157         if ((type == Clipboard::LyXTextType ||
1158              type == Clipboard::LyXOrPlainTextType ||
1159              type == Clipboard::AnyTextType) &&
1160             theClipboard().hasTextContents(Clipboard::LyXTextType)) {
1161                 string lyx = theClipboard().getAsLyX();
1162                 if (!lyx.empty()) {
1163                         // For some strange reason gcc 3.2 and 3.3 do not accept
1164                         // Buffer buffer(string(), false);
1165                         Buffer buffer("", false);
1166                         buffer.setUnnamed(true);
1167                         if (buffer.readString(lyx)) {
1168                                 cur.recordUndo();
1169                                 pasteParagraphList(cur, buffer.paragraphs(),
1170                                         buffer.params().documentClassPtr(), errorList);
1171                                 return true;
1172                         }
1173                 }
1174         }
1175
1176         // Then try TeX and HTML
1177         Clipboard::TextType types[2] = {Clipboard::HtmlTextType, Clipboard::LaTeXTextType};
1178         string names[2] = {"html", "latexclipboard"};
1179         for (int i = 0; i < 2; ++i) {
1180                 if (type != types[i] && type != Clipboard::AnyTextType)
1181                         continue;
1182                 bool available = theClipboard().hasTextContents(types[i]);
1183
1184                 // If a specific type was explicitly requested, try to
1185                 // interpret plain text: The user told us that the clipboard
1186                 // contents is in the desired format
1187                 if (!available && type == types[i]) {
1188                         types[i] = Clipboard::PlainTextType;
1189                         available = theClipboard().hasTextContents(types[i]);
1190                 }
1191
1192                 if (available) {
1193                         docstring text = theClipboard().getAsText(types[i]);
1194                         available = !text.empty();
1195                         if (available) {
1196                                 // For some strange reason gcc 3.2 and 3.3 do not accept
1197                                 // Buffer buffer(string(), false);
1198                                 Buffer buffer("", false);
1199                                 buffer.setUnnamed(true);
1200                                 available = buffer.importString(names[i], text, errorList);
1201                                 if (available)
1202                                         available = !buffer.paragraphs().empty();
1203                                 if (available && !buffer.paragraphs()[0].empty()) {
1204                                         cur.recordUndo();
1205                                         pasteParagraphList(cur, buffer.paragraphs(),
1206                                                 buffer.params().documentClassPtr(), errorList);
1207                                         return true;
1208                                 }
1209                         }
1210                 }
1211         }
1212
1213         // Then try plain text
1214         docstring const text = theClipboard().getAsText(Clipboard::PlainTextType);
1215         if (text.empty())
1216                 return false;
1217         cur.recordUndo();
1218         if (asParagraphs)
1219                 cur.text()->insertStringAsParagraphs(cur, text, cur.current_font);
1220         else
1221                 cur.text()->insertStringAsLines(cur, text, cur.current_font);
1222         cur.forceBufferUpdate();
1223         return true;
1224 }
1225
1226
1227 void pasteSimpleText(Cursor & cur, bool asParagraphs)
1228 {
1229         docstring text;
1230         // Use internal clipboard if it is the most recent one
1231         if (theClipboard().isInternal()) {
1232                 if (!checkPastePossible(0))
1233                         return;
1234
1235                 ParagraphList const & pars = theCuts[0].first;
1236                 ParagraphList::const_iterator it = pars.begin();
1237                 for (; it != pars.end(); ++it) {
1238                         if (it != pars.begin())
1239                                 text += "\n";
1240                         text += (*it).asString();
1241                 }
1242                 asParagraphs = false;
1243         } else {
1244                 // Then try plain text
1245                 text = theClipboard().getAsText(Clipboard::PlainTextType);
1246         }
1247
1248         if (text.empty())
1249                 return;
1250
1251         cur.recordUndo();
1252         cutSelection(cur, true, false);
1253         if (asParagraphs)
1254                 cur.text()->insertStringAsParagraphs(cur, text, cur.current_font);
1255         else
1256                 cur.text()->insertStringAsLines(cur, text, cur.current_font);
1257 }
1258
1259
1260 void pasteClipboardGraphics(Cursor & cur, ErrorList & /* errorList */,
1261                             Clipboard::GraphicsType preferedType)
1262 {
1263         LASSERT(theClipboard().hasGraphicsContents(preferedType), return);
1264
1265         // get picture from clipboard
1266         FileName filename = theClipboard().getAsGraphics(cur, preferedType);
1267         if (filename.empty())
1268                 return;
1269
1270         // create inset for graphic
1271         InsetGraphics * inset = new InsetGraphics(cur.buffer());
1272         InsetGraphicsParams params;
1273         params.filename = support::DocFileName(filename.absFileName(), false);
1274         inset->setParams(params);
1275         cur.recordUndo();
1276         cur.insert(inset);
1277 }
1278
1279
1280 void pasteSelection(Cursor & cur, ErrorList & errorList)
1281 {
1282         if (selectionBuffer.empty())
1283                 return;
1284         cur.recordUndo();
1285         pasteParagraphList(cur, selectionBuffer[0].first,
1286                            selectionBuffer[0].second, errorList);
1287 }
1288
1289
1290 void replaceSelectionWithString(Cursor & cur, docstring const & str)
1291 {
1292         cur.recordUndo();
1293         DocIterator selbeg = cur.selectionBegin();
1294
1295         // Get font setting before we cut, we need a copy here, not a bare reference.
1296         Font const font =
1297                 selbeg.paragraph().getFontSettings(cur.buffer()->params(), selbeg.pos());
1298
1299         // Insert the new string
1300         pos_type pos = cur.selEnd().pos();
1301         Paragraph & par = cur.selEnd().paragraph();
1302         docstring::const_iterator cit = str.begin();
1303         docstring::const_iterator end = str.end();
1304         for (; cit != end; ++cit, ++pos)
1305                 par.insertChar(pos, *cit, font, cur.buffer()->params().track_changes);
1306
1307         // Cut the selection
1308         cutSelection(cur, true, false);
1309 }
1310
1311
1312 void replaceSelection(Cursor & cur)
1313 {
1314         if (cur.selection())
1315                 cutSelection(cur, true, false);
1316 }
1317
1318
1319 void eraseSelection(Cursor & cur)
1320 {
1321         //lyxerr << "cap::eraseSelection begin: " << cur << endl;
1322         CursorSlice const & i1 = cur.selBegin();
1323         CursorSlice const & i2 = cur.selEnd();
1324         if (!i1.asInsetMath()) {
1325                 LYXERR0("Can't erase this selection");
1326                 return;
1327         }
1328
1329         saveSelection(cur);
1330         cur.top() = i1;
1331         InsetMath * p = i1.asInsetMath();
1332         if (i1.idx() == i2.idx()) {
1333                 i1.cell().erase(i1.pos(), i2.pos());
1334                 // We may have deleted i1.cell(cur.pos()).
1335                 // Make sure that pos is valid.
1336                 if (cur.pos() > cur.lastpos())
1337                         cur.pos() = cur.lastpos();
1338         } else if (p->nrows() > 0 && p->ncols() > 0) {
1339                 // This is a grid, delete a nice square region
1340                 Inset::row_type r1, r2;
1341                 Inset::col_type c1, c2;
1342                 region(i1, i2, r1, r2, c1, c2);
1343                 for (Inset::row_type row = r1; row <= r2; ++row)
1344                         for (Inset::col_type col = c1; col <= c2; ++col)
1345                                 p->cell(p->index(row, col)).clear();
1346                 // We've deleted the whole cell. Only pos 0 is valid.
1347                 cur.pos() = 0;
1348         } else {
1349                 Inset::idx_type idx1 = i1.idx();
1350                 Inset::idx_type idx2 = i2.idx();
1351                 if (idx1 > idx2)
1352                         swap(idx1, idx2);
1353                 for (Inset::idx_type idx = idx1 ; idx <= idx2; ++idx)
1354                         p->cell(idx).clear();
1355                 // We've deleted the whole cell. Only pos 0 is valid.
1356                 cur.pos() = 0;
1357         }
1358
1359         // need a valid cursor. (Lgb)
1360         cur.clearSelection();
1361         //lyxerr << "cap::eraseSelection end: " << cur << endl;
1362 }
1363
1364
1365 void selDel(Cursor & cur)
1366 {
1367         //lyxerr << "cap::selDel" << endl;
1368         if (cur.selection())
1369                 eraseSelection(cur);
1370 }
1371
1372
1373 void selClearOrDel(Cursor & cur)
1374 {
1375         //lyxerr << "cap::selClearOrDel" << endl;
1376         if (lyxrc.auto_region_delete)
1377                 selDel(cur);
1378         else
1379                 cur.selection(false);
1380 }
1381
1382
1383 docstring grabSelection(CursorData const & cur)
1384 {
1385         if (!cur.selection())
1386                 return docstring();
1387
1388 #if 0
1389         // grab selection by glueing multiple cells together. This is not what
1390         // we want because selections spanning multiple cells will get "&" and "\\"
1391         // seperators.
1392         ostringstream os;
1393         for (DocIterator dit = cur.selectionBegin();
1394              dit != cur.selectionEnd(); dit.forwardPos())
1395                 os << asString(dit.cell());
1396         return os.str();
1397 #endif
1398
1399         CursorSlice i1 = cur.selBegin();
1400         CursorSlice i2 = cur.selEnd();
1401
1402         if (i1.idx() == i2.idx()) {
1403                 if (i1.inset().asInsetMath()) {
1404                         MathData::const_iterator it = i1.cell().begin();
1405                         Buffer * buf = cur.buffer();
1406                         return asString(MathData(buf, it + i1.pos(), it + i2.pos()));
1407                 } else {
1408                         return from_ascii("unknown selection 1");
1409                 }
1410         }
1411
1412         Inset::row_type r1, r2;
1413         Inset::col_type c1, c2;
1414         region(i1, i2, r1, r2, c1, c2);
1415
1416         docstring data;
1417         if (i1.inset().asInsetMath()) {
1418                 for (Inset::row_type row = r1; row <= r2; ++row) {
1419                         if (row > r1)
1420                                 data += "\\\\";
1421                         for (Inset::col_type col = c1; col <= c2; ++col) {
1422                                 if (col > c1)
1423                                         data += '&';
1424                                 data += asString(i1.asInsetMath()->
1425                                         cell(i1.asInsetMath()->index(row, col)));
1426                         }
1427                 }
1428         } else {
1429                 data = from_ascii("unknown selection 2");
1430         }
1431         return data;
1432 }
1433
1434
1435 void dirtyTabularStack(bool b)
1436 {
1437         dirty_tabular_stack_ = b;
1438 }
1439
1440
1441 bool tabularStackDirty()
1442 {
1443         return dirty_tabular_stack_;
1444 }
1445
1446
1447 } // namespace cap
1448 } // namespace lyx