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 "Buffer.h"
  19 #include "buffer_funcs.h"
  20 #include "BufferList.h"
  21 #include "BufferParams.h"
  22 #include "BufferView.h"
  23 #include "Changes.h"
  24 #include "Cursor.h"
  25 #include "ErrorList.h"
  26 #include "FuncCode.h"
  27 #include "FuncRequest.h"
  28 #include "InsetIterator.h"
  29 #include "InsetList.h"
  30 #include "Language.h"
  31 #include "LyXFunc.h"
  32 #include "LyXRC.h"
  33 #include "Text.h"
  34 #include "Paragraph.h"
  35 #include "paragraph_funcs.h"
  36 #include "ParagraphParameters.h"
  37 #include "ParIterator.h"
  38 #include "Undo.h"
  39
  40 #include "insets/InsetFlex.h"
  41 #include "insets/InsetCommand.h"
  42 #include "insets/InsetGraphics.h"
  43 #include "insets/InsetGraphicsParams.h"
  44 #include "insets/InsetTabular.h"
  45
  46 #include "mathed/MathData.h"
  47 #include "mathed/InsetMath.h"
  48 #include "mathed/MathSupport.h"
  49
  50 #include "support/debug.h"
  51 #include "support/docstream.h"
  52 #include "support/gettext.h"
  53 #include "support/limited_stack.h"
  54 #include "support/lstrings.h"
  55
  56 #include "frontends/Clipboard.h"
  57 #include "frontends/Selection.h"
  58
  59 #include <boost/tuple/tuple.hpp>
  60 #include <boost/next_prior.hpp>
  61
  62 #include <string>
  63
  64 using namespace std;
  65 using namespace lyx::support;
  66 using lyx::frontend::Clipboard;
  67
  68 namespace lyx {
  69
  70 namespace {
  71
  72 typedef pair<pit_type, int> PitPosPair;
  73
  74 typedef limited_stack<pair<ParagraphList, DocumentClass const *> > CutStack;
  75
  76 CutStack theCuts(10);
  77 // persistent selection, cleared until the next selection
  78 CutStack selectionBuffer(1);
  79
  80 // store whether the tabular stack is newer than the normal copy stack
  81 // FIXME: this is a workaround for bug 1919. Should be removed for 1.5,
  82 // when we (hopefully) have a one-for-all paste mechanism.
  83 bool dirty_tabular_stack_ = false;
  84
  85
  86 bool checkPastePossible(int index)
  87 {
  88         return size_t(index) < theCuts.size() && !theCuts[index].first.empty();
  89 }
  90
  91
  92 pair<PitPosPair, pit_type>
  93 pasteSelectionHelper(Cursor & cur, ParagraphList const & parlist,
  94                      DocumentClass const * const oldDocClass, ErrorList & errorlist)
  95 {
  96         Buffer const & buffer = cur.buffer();
  97         pit_type pit = cur.pit();
  98         pos_type pos = cur.pos();
  99         ParagraphList & pars = cur.text()->paragraphs();
 100
 101         if (parlist.empty())
 102                 return make_pair(PitPosPair(pit, pos), pit);
 103
 104         BOOST_ASSERT (pos <= pars[pit].size());
 105
 106         // Make a copy of the CaP paragraphs.
 107         ParagraphList insertion = parlist;
 108         DocumentClass const * const newDocClass =
 109                 buffer.params().documentClassPtr();
 110
 111         // Now remove all out of the pars which is NOT allowed in the
 112         // new environment and set also another font if that is required.
 113
 114         // Convert newline to paragraph break in ERT inset.
 115         // This should not be here!
 116         Inset * inset = pars[pit].inInset();
 117         if (inset && (inset->lyxCode() == ERT_CODE ||
 118                         inset->lyxCode() == LISTINGS_CODE)) {
 119                 for (size_t i = 0; i != insertion.size(); ++i) {
 120                         for (pos_type j = 0; j != insertion[i].size(); ++j) {
 121                                 if (insertion[i].isNewline(j)) {
 122                                         // do not track deletion of newline
 123                                         insertion[i].eraseChar(j, false);
 124                                         breakParagraphConservative(
 125                                                         buffer.params(),
 126                                                         insertion, i, j);
 127                                         break;
 128                                 }
 129                         }
 130                 }
 131         }
 132
 133         // set the paragraphs to empty layout if necessary
 134         if (cur.inset().usePlainLayout()) {
 135                 bool forcePlainLayout = cur.inset().forcePlainLayout();
 136                 Layout const & emptyLayout = newDocClass->emptyLayout();
 137                 Layout const & defaultLayout = newDocClass->defaultLayout();
 138                 ParagraphList::iterator const end = insertion.end();
 139                 ParagraphList::iterator par = insertion.begin();
 140                 for (; par != end; ++par) {
 141                         Layout const & parLayout = par->layout();
 142                         if (forcePlainLayout || parLayout == defaultLayout)
 143                                 par->setLayout(emptyLayout);
 144                 }
 145         } else { // check if we need to reset from empty layout
 146                 Layout const & defaultLayout = newDocClass->defaultLayout();
 147                 Layout const & emptyLayout = newDocClass->emptyLayout();
 148                 ParagraphList::iterator const end = insertion.end();
 149                 ParagraphList::iterator par = insertion.begin();
 150                 for (; par != end; ++par) {
 151                         Layout const & parLayout = par->layout();
 152                         if (parLayout == emptyLayout)
 153                                 par->setLayout(defaultLayout);
 154                 }
 155         }
 156
 157         InsetText in(buffer);
 158         // Make sure there is no class difference.
 159         in.paragraphs().clear();
 160         // This works without copying any paragraph data because we have
 161         // a specialized swap method for ParagraphList. This is important
 162         // since we store pointers to insets at some places and we don't
 163         // want to invalidate them.
 164         insertion.swap(in.paragraphs());
 165         cap::switchBetweenClasses(oldDocClass, newDocClass, in, errorlist);
 166         insertion.swap(in.paragraphs());
 167
 168         ParagraphList::iterator tmpbuf = insertion.begin();
 169         int depth_delta = pars[pit].params().depth() - tmpbuf->params().depth();
 170
 171         depth_type max_depth = pars[pit].getMaxDepthAfter();
 172
 173         for (; tmpbuf != insertion.end(); ++tmpbuf) {
 174                 // If we have a negative jump so that the depth would
 175                 // go below 0 depth then we have to redo the delta to
 176                 // this new max depth level so that subsequent
 177                 // paragraphs are aligned correctly to this paragraph
 178                 // at level 0.
 179                 if (int(tmpbuf->params().depth()) + depth_delta < 0)
 180                         depth_delta = 0;
 181
 182                 // Set the right depth so that we are not too deep or shallow.
 183                 tmpbuf->params().depth(tmpbuf->params().depth() + depth_delta);
 184                 if (tmpbuf->params().depth() > max_depth)
 185                         tmpbuf->params().depth(max_depth);
 186
 187                 // Only set this from the 2nd on as the 2nd depends
 188                 // for maxDepth still on pit.
 189                 if (tmpbuf != insertion.begin())
 190                         max_depth = tmpbuf->getMaxDepthAfter();
 191
 192                 // Set the inset owner of this paragraph.
 193                 tmpbuf->setInsetOwner(pars[pit].inInset());
 194                 for (pos_type i = 0; i < tmpbuf->size(); ++i) {
 195                         // do not track deletion of invalid insets
 196                         if (Inset * inset = tmpbuf->getInset(i))
 197                                 if (!pars[pit].insetAllowed(inset->lyxCode()))
 198                                         tmpbuf->eraseChar(i--, false);
 199                 }
 200
 201                 tmpbuf->setChange(Change(buffer.params().trackChanges ?
 202                                          Change::INSERTED : Change::UNCHANGED));
 203         }
 204
 205         bool const empty = pars[pit].empty();
 206         if (!empty) {
 207                 // Make the buf exactly the same layout as the cursor
 208                 // paragraph.
 209                 insertion.begin()->makeSameLayout(pars[pit]);
 210         }
 211
 212         // Prepare the paragraphs and insets for insertion.
 213         // A couple of insets store buffer references so need updating.
 214         insertion.swap(in.paragraphs());
 215
 216         InsetIterator const i_end = inset_iterator_end(in);
 217
 218         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 219
 220                 it->setBuffer(const_cast<Buffer &>(buffer));
 221
 222                 switch (it->lyxCode()) {
 223
 224                 case LABEL_CODE: {
 225                         // check for duplicates
 226                         InsetCommand & lab = static_cast<InsetCommand &>(*it);
 227                         docstring const oldname = lab.getParam("name");
 228                         lab.updateCommand(oldname, false);
 229                         docstring const newname = lab.getParam("name");
 230                         if (oldname != newname) {
 231                                 // adapt the references
 232                                 for (InsetIterator itt = inset_iterator_begin(in); itt != i_end; ++itt) {
 233                                         if (itt->lyxCode() == REF_CODE) {
 234                                                 InsetCommand & ref = dynamic_cast<InsetCommand &>(*itt);
 235                                                 if (ref.getParam("reference") == oldname)
 236                                                         ref.setParam("reference", newname);
 237                                         }
 238                                 }
 239                         }
 240                         break;
 241                 }
 242
 243                 case BIBITEM_CODE: {
 244                         // check for duplicates
 245                         InsetCommand & bib = static_cast<InsetCommand &>(*it);
 246                         docstring const oldkey = bib.getParam("key");
 247                         bib.updateCommand(oldkey, false);
 248                         docstring const newkey = bib.getParam("key");
 249                         if (oldkey != newkey) {
 250                                 // adapt the references
 251                                 for (InsetIterator itt = inset_iterator_begin(in); itt != i_end; ++itt) {
 252                                         if (itt->lyxCode() == CITE_CODE) {
 253                                                 InsetCommand & ref = dynamic_cast<InsetCommand &>(*itt);
 254                                                 if (ref.getParam("key") == oldkey)
 255                                                         ref.setParam("key", newkey);
 256                                         }
 257                                 }
 258                         }
 259                         break;
 260                 }
 261
 262                 default:
 263                         break; // nothing
 264                 }
 265         }
 266         insertion.swap(in.paragraphs());
 267
 268         // Split the paragraph for inserting the buf if necessary.
 269         if (!empty)
 270                 breakParagraphConservative(buffer.params(), pars, pit, pos);
 271
 272         // Paste it!
 273         if (empty) {
 274                 pars.insert(boost::next(pars.begin(), pit),
 275                             insertion.begin(),
 276                             insertion.end());
 277
 278                 // merge the empty par with the last par of the insertion
 279                 mergeParagraph(buffer.params(), pars,
 280                                pit + insertion.size() - 1);
 281         } else {
 282                 pars.insert(boost::next(pars.begin(), pit + 1),
 283                             insertion.begin(),
 284                             insertion.end());
 285
 286                 // merge the first par of the insertion with the current par
 287                 mergeParagraph(buffer.params(), pars, pit);
 288         }
 289
 290         pit_type last_paste = pit + insertion.size() - 1;
 291
 292         // Store the new cursor position.
 293         pit = last_paste;
 294         pos = pars[last_paste].size();
 295
 296         // Join (conditionally) last pasted paragraph with next one, i.e.,
 297         // the tail of the spliced document paragraph
 298         if (!empty && last_paste + 1 != pit_type(pars.size())) {
 299                 if (pars[last_paste + 1].hasSameLayout(pars[last_paste])) {
 300                         mergeParagraph(buffer.params(), pars, last_paste);
 301                 } else if (pars[last_paste + 1].empty()) {
 302                         pars[last_paste + 1].makeSameLayout(pars[last_paste]);
 303                         mergeParagraph(buffer.params(), pars, last_paste);
 304                 } else if (pars[last_paste].empty()) {
 305                         pars[last_paste].makeSameLayout(pars[last_paste + 1]);
 306                         mergeParagraph(buffer.params(), pars, last_paste);
 307                 } else {
 308                         pars[last_paste + 1].stripLeadingSpaces(buffer.params().trackChanges);
 309                         ++last_paste;
 310                 }
 311         }
 312
 313         return make_pair(PitPosPair(pit, pos), last_paste + 1);
 314 }
 315
 316
 317 PitPosPair eraseSelectionHelper(BufferParams const & params,
 318         ParagraphList & pars,
 319         pit_type startpit, pit_type endpit,
 320         int startpos, int endpos)
 321 {
 322         // Start of selection is really invalid.
 323         if (startpit == pit_type(pars.size()) ||
 324             (startpos > pars[startpit].size()))
 325                 return PitPosPair(endpit, endpos);
 326
 327         // Start and end is inside same paragraph
 328         if (endpit == pit_type(pars.size()) || startpit == endpit) {
 329                 endpos -= pars[startpit].eraseChars(startpos, endpos, params.trackChanges);
 330                 return PitPosPair(endpit, endpos);
 331         }
 332
 333         for (pit_type pit = startpit; pit != endpit + 1;) {
 334                 pos_type const left  = (pit == startpit ? startpos : 0);
 335                 pos_type right = (pit == endpit ? endpos : pars[pit].size() + 1);
 336                 bool const merge = pars[pit].isMergedOnEndOfParDeletion(params.trackChanges);
 337
 338                 // Logically erase only, including the end-of-paragraph character
 339                 pars[pit].eraseChars(left, right, params.trackChanges);
 340
 341                 // Separate handling of paragraph break:
 342                 if (merge && pit != endpit &&
 343                     (pit + 1 != endpit
 344                      || pars[pit].hasSameLayout(pars[endpit])
 345                      || pars[endpit].size() == endpos)) {
 346                         if (pit + 1 == endpit)
 347                                 endpos += pars[pit].size();
 348                         mergeParagraph(params, pars, pit);
 349                         --endpit;
 350                 } else
 351                         ++pit;
 352         }
 353
 354         // Ensure legal cursor pos:
 355         endpit = startpit;
 356         endpos = startpos;
 357         return PitPosPair(endpit, endpos);
 358 }
 359
 360
 361 void putClipboard(ParagraphList const & paragraphs,
 362         DocumentClass const * const docclass, docstring const & plaintext)
 363 {
 364         // For some strange reason gcc 3.2 and 3.3 do not accept
 365         // Buffer buffer(string(), false);
 366         // This needs to be static to avoid a memory leak. When a Buffer is
 367         // constructed, it constructs a BufferParams, which in turn constructs
 368         // a DocumentClass, via new, that is never deleted. If we were to go to
 369         // some kind of garbage collection there, or a shared_ptr, then this
 370         // would not be needed.
 371         static Buffer * buffer = theBufferList().newBuffer(
 372                 FileName::tempName().absFilename() + "_clipboard.internal");
 373         buffer->setUnnamed(true);
 374         buffer->paragraphs() = paragraphs;
 375         buffer->inset().setBuffer(*buffer);
 376         buffer->params().setDocumentClass(docclass);
 377         ostringstream lyx;
 378         if (buffer->write(lyx))
 379                 theClipboard().put(lyx.str(), plaintext);
 380         else
 381                 theClipboard().put(string(), plaintext);
 382         // Save that memory
 383         buffer->paragraphs().clear();
 384 }
 385
 386
 387 void copySelectionHelper(Buffer const & buf, ParagraphList & pars,
 388         pit_type startpit, pit_type endpit,
 389         int start, int end, DocumentClass const * const dc, CutStack & cutstack)
 390 {
 391         LASSERT(0 <= start && start <= pars[startpit].size(), /**/);
 392         LASSERT(0 <= end && end <= pars[endpit].size(), /**/);
 393         LASSERT(startpit != endpit || start <= end, /**/);
 394
 395         // Clone the paragraphs within the selection.
 396         ParagraphList copy_pars(boost::next(pars.begin(), startpit),
 397                                 boost::next(pars.begin(), endpit + 1));
 398
 399         // Remove the end of the last paragraph; afterwards, remove the
 400         // beginning of the first paragraph. Keep this order - there may only
 401         // be one paragraph!  Do not track deletions here; this is an internal
 402         // action not visible to the user
 403
 404         Paragraph & back = copy_pars.back();
 405         back.eraseChars(end, back.size(), false);
 406         Paragraph & front = copy_pars.front();
 407         front.eraseChars(0, start, false);
 408
 409         ParagraphList::iterator it = copy_pars.begin();
 410         ParagraphList::iterator it_end = copy_pars.end();
 411
 412         for (; it != it_end; it++) {
 413                 // ERT paragraphs have the Language latex_language.
 414                 // This is invalid outside of ERT, so we need to change it
 415                 // to the buffer language.
 416                 if (it->ownerCode() == ERT_CODE || it->ownerCode() == LISTINGS_CODE) {
 417                         it->changeLanguage(buf.params(), latex_language, buf.language());
 418                 }
 419                 it->setInsetOwner(0);
 420         }
 421
 422         // do not copy text (also nested in insets) which is marked as deleted
 423         acceptChanges(copy_pars, buf.params());
 424
 425         DocumentClass * d = const_cast<DocumentClass *>(dc);
 426         cutstack.push(make_pair(copy_pars, d));
 427 }
 428
 429 } // namespace anon
 430
 431
 432
 433
 434 namespace cap {
 435
 436 void region(CursorSlice const & i1, CursorSlice const & i2,
 437             Inset::row_type & r1, Inset::row_type & r2,
 438             Inset::col_type & c1, Inset::col_type & c2)
 439 {
 440         Inset & p = i1.inset();
 441         c1 = p.col(i1.idx());
 442         c2 = p.col(i2.idx());
 443         if (c1 > c2)
 444                 swap(c1, c2);
 445         r1 = p.row(i1.idx());
 446         r2 = p.row(i2.idx());
 447         if (r1 > r2)
 448                 swap(r1, r2);
 449 }
 450
 451
 452 docstring grabAndEraseSelection(Cursor & cur)
 453 {
 454         if (!cur.selection())
 455                 return docstring();
 456         docstring res = grabSelection(cur);
 457         eraseSelection(cur);
 458         return res;
 459 }
 460
 461
 462 bool reduceSelectionToOneCell(Cursor & cur)
 463 {
 464         if (!cur.selection() || !cur.inMathed())
 465                 return false;
 466
 467         CursorSlice i1 = cur.selBegin();
 468         CursorSlice i2 = cur.selEnd();
 469         if (!i1.inset().asInsetMath())
 470                 return false;
 471
 472         // the easy case: do nothing if only one cell is selected
 473         if (i1.idx() == i2.idx())
 474                 return true;
 475
 476         cur.top().pos() = 0;
 477         cur.resetAnchor();
 478         cur.top().pos() = cur.top().lastpos();
 479
 480         return true;
 481 }
 482
 483
 484 bool multipleCellsSelected(Cursor const & cur)
 485 {
 486         if (!cur.selection() || !cur.inMathed())
 487                 return false;
 488
 489         CursorSlice i1 = cur.selBegin();
 490         CursorSlice i2 = cur.selEnd();
 491         if (!i1.inset().asInsetMath())
 492                 return false;
 493
 494         if (i1.idx() == i2.idx())
 495                 return false;
 496
 497         return true;
 498 }
 499
 500
 501 void switchBetweenClasses(DocumentClass const * const oldone,
 502                 DocumentClass const * const newone, InsetText & in, ErrorList & errorlist)
 503 {
 504         errorlist.clear();
 505
 506         LASSERT(!in.paragraphs().empty(), /**/);
 507         if (oldone == newone)
 508                 return;
 509
 510         DocumentClass const & oldtc = *oldone;
 511         DocumentClass const & newtc = *newone;
 512
 513         // layouts
 514         ParIterator end = par_iterator_end(in);
 515         for (ParIterator it = par_iterator_begin(in); it != end; ++it) {
 516                 docstring const name = it->layout().name();
 517
 518                 // the pasted text will keep their own layout name. If this layout does
 519                 // not exist in the new document, it will behave like a standard layout.
 520                 newtc.addLayoutIfNeeded(name);
 521
 522                 if (in.usePlainLayout())
 523                         it->setLayout(newtc.emptyLayout());
 524                 else
 525                         it->setLayout(newtc[name]);
 526         }
 527
 528         // character styles
 529         InsetIterator const i_end = inset_iterator_end(in);
 530         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 531                 InsetCollapsable * inset = it->asInsetCollapsable();
 532                 if (!inset)
 533                         continue;
 534                 if (inset->lyxCode() != FLEX_CODE)
 535                         // FIXME: Should we verify all InsetCollapsable?
 536                         continue;
 537                 inset->setLayout(newone);
 538                 if (!inset->undefined())
 539                         continue;
 540                 // The flex inset is undefined in newtc
 541                 docstring const s = bformat(_(
 542                         "Flex inset %1$s is "
 543                         "undefined because of class "
 544                         "conversion from\n%2$s to %3$s"),
 545                         inset->name(), from_utf8(oldtc.name()),
 546                         from_utf8(newtc.name()));
 547                 // To warn the user that something had to be done.
 548                 errorlist.push_back(ErrorItem(
 549                                 _("Undefined flex inset"),
 550                                 s, it.paragraph().id(), it.pos(), it.pos() + 1));
 551         }
 552 }
 553
 554
 555 vector<docstring> availableSelections()
 556 {
 557         vector<docstring> selList;
 558
 559         CutStack::const_iterator cit = theCuts.begin();
 560         CutStack::const_iterator end = theCuts.end();
 561         for (; cit != end; ++cit) {
 562                 // we do not use cit-> here because gcc 2.9x does not
 563                 // like it (JMarc)
 564                 ParagraphList const & pars = (*cit).first;
 565                 docstring asciiSel;
 566                 ParagraphList::const_iterator pit = pars.begin();
 567                 ParagraphList::const_iterator pend = pars.end();
 568                 for (; pit != pend; ++pit) {
 569                         asciiSel += pit->asString(AS_STR_INSETS);
 570                         if (asciiSel.size() > 25) {
 571                                 asciiSel.replace(22, docstring::npos,
 572                                                  from_ascii("..."));
 573                                 break;
 574                         }
 575                 }
 576
 577                 selList.push_back(asciiSel);
 578         }
 579
 580         return selList;
 581 }
 582
 583
 584 size_type numberOfSelections()
 585 {
 586         return theCuts.size();
 587 }
 588
 589
 590 void cutSelection(Cursor & cur, bool doclear, bool realcut)
 591 {
 592         // This doesn't make sense, if there is no selection
 593         if (!cur.selection())
 594                 return;
 595
 596         // OK, we have a selection. This is always between cur.selBegin()
 597         // and cur.selEnd()
 598
 599         if (cur.inTexted()) {
 600                 Text * text = cur.text();
 601                 LASSERT(text, /**/);
 602
 603                 saveSelection(cur);
 604
 605                 // make sure that the depth behind the selection are restored, too
 606                 cur.recordUndoSelection();
 607                 pit_type begpit = cur.selBegin().pit();
 608                 pit_type endpit = cur.selEnd().pit();
 609
 610                 int endpos = cur.selEnd().pos();
 611
 612                 BufferParams const & bp = cur.buffer().params();
 613                 if (realcut) {
 614                         copySelectionHelper(cur.buffer(),
 615                                 text->paragraphs(),
 616                                 begpit, endpit,
 617                                 cur.selBegin().pos(), endpos,
 618                                 bp.documentClassPtr(), theCuts);
 619                         // Stuff what we got on the clipboard.
 620                         // Even if there is no selection.
 621                         putClipboard(theCuts[0].first, theCuts[0].second,
 622                                 cur.selectionAsString(true));
 623                 }
 624
 625                 if (begpit != endpit)
 626                         cur.updateFlags(Update::Force | Update::FitCursor);
 627
 628                 boost::tie(endpit, endpos) =
 629                         eraseSelectionHelper(bp,
 630                                 text->paragraphs(),
 631                                 begpit, endpit,
 632                                 cur.selBegin().pos(), endpos);
 633
 634                 // cutSelection can invalidate the cursor so we need to set
 635                 // it anew. (Lgb)
 636                 // we prefer the end for when tracking changes
 637                 cur.pos() = endpos;
 638                 cur.pit() = endpit;
 639
 640                 // sometimes necessary
 641                 if (doclear
 642                         && text->paragraphs()[begpit].stripLeadingSpaces(bp.trackChanges))
 643                         cur.fixIfBroken();
 644
 645                 // need a valid cursor. (Lgb)
 646                 cur.clearSelection();
 647                 updateLabels(cur.buffer());
 648
 649                 // tell tabular that a recent copy happened
 650                 dirtyTabularStack(false);
 651         }
 652
 653         if (cur.inMathed()) {
 654                 if (cur.selBegin().idx() != cur.selEnd().idx()) {
 655                         // The current selection spans more than one cell.
 656                         // Record all cells
 657                         cur.recordUndoInset();
 658                 } else {
 659                         // Record only the current cell to avoid a jumping
 660                         // cursor after undo
 661                         cur.recordUndo();
 662                 }
 663                 if (realcut)
 664                         copySelection(cur);
 665                 eraseSelection(cur);
 666         }
 667 }
 668
 669
 670 void copySelection(Cursor & cur)
 671 {
 672         copySelection(cur, cur.selectionAsString(true));
 673 }
 674
 675
 676 namespace {
 677
 678 void copySelectionToStack(Cursor & cur, CutStack & cutstack)
 679 {
 680         // this doesn't make sense, if there is no selection
 681         if (!cur.selection())
 682                 return;
 683
 684         // copySelection can not yet handle the case of cross idx selection
 685         if (cur.selBegin().idx() != cur.selEnd().idx())
 686                 return;
 687
 688         if (cur.inTexted()) {
 689                 Text * text = cur.text();
 690                 LASSERT(text, /**/);
 691                 // ok we have a selection. This is always between cur.selBegin()
 692                 // and sel_end cursor
 693
 694                 // copy behind a space if there is one
 695                 ParagraphList & pars = text->paragraphs();
 696                 pos_type pos = cur.selBegin().pos();
 697                 pit_type par = cur.selBegin().pit();
 698                 while (pos < pars[par].size() &&
 699                        pars[par].isLineSeparator(pos) &&
 700                        (par != cur.selEnd().pit() || pos < cur.selEnd().pos()))
 701                         ++pos;
 702
 703                 copySelectionHelper(cur.buffer(), pars, par, cur.selEnd().pit(),
 704                         pos, cur.selEnd().pos(),
 705                         cur.buffer().params().documentClassPtr(), cutstack);
 706                 dirtyTabularStack(false);
 707         }
 708
 709         if (cur.inMathed()) {
 710                 //lyxerr << "copySelection in mathed" << endl;
 711                 ParagraphList pars;
 712                 Paragraph par;
 713                 BufferParams const & bp = cur.buffer().params();
 714                 // FIXME This should be the empty layout...right?
 715                 par.setLayout(bp.documentClass().emptyLayout());
 716                 par.insert(0, grabSelection(cur), Font(), Change(Change::UNCHANGED));
 717                 pars.push_back(par);
 718                 cutstack.push(make_pair(pars, bp.documentClassPtr()));
 719         }
 720 }
 721
 722 }
 723
 724
 725 void copySelectionToStack()
 726 {
 727         if (!selectionBuffer.empty())
 728                 theCuts.push(selectionBuffer[0]);
 729 }
 730
 731
 732 void copySelection(Cursor & cur, docstring const & plaintext)
 733 {
 734         // In tablemode, because copy and paste actually use special table stack
 735         // we do not attempt to get selected paragraphs under cursor. Instead, a
 736         // paragraph with the plain text version is generated so that table cells
 737         // can be pasted as pure text somewhere else.
 738         if (cur.selBegin().idx() != cur.selEnd().idx()) {
 739                 ParagraphList pars;
 740                 Paragraph par;
 741                 BufferParams const & bp = cur.buffer().params();
 742                 par.setLayout(bp.documentClass().emptyLayout());
 743                 par.insert(0, plaintext, Font(), Change(Change::UNCHANGED));
 744                 pars.push_back(par);
 745                 theCuts.push(make_pair(pars, bp.documentClassPtr()));
 746         } else {
 747                 copySelectionToStack(cur, theCuts);
 748         }
 749
 750         // stuff the selection onto the X clipboard, from an explicit copy request
 751         putClipboard(theCuts[0].first, theCuts[0].second, plaintext);
 752 }
 753
 754
 755 void saveSelection(Cursor & cur)
 756 {
 757         // This function is called, not when a selection is formed, but when
 758         // a selection is cleared. Therefore, multiple keyboard selection
 759         // will not repeatively trigger this function (bug 3877).
 760         if (cur.selection()
 761             && cur.selBegin() == cur.bv().cursor().selBegin()
 762             && cur.selEnd() == cur.bv().cursor().selEnd()) {
 763                 LYXERR(Debug::SELECTION, "saveSelection: '" << cur.selectionAsString(true) << "'");
 764                 copySelectionToStack(cur, selectionBuffer);
 765         }
 766 }
 767
 768
 769 bool selection()
 770 {
 771         return !selectionBuffer.empty();
 772 }
 773
 774
 775 void clearSelection()
 776 {
 777         selectionBuffer.clear();
 778 }
 779
 780
 781 void clearCutStack()
 782 {
 783         theCuts.clear();
 784 }
 785
 786
 787 docstring selection(size_t sel_index)
 788 {
 789         return sel_index < theCuts.size()
 790                 ? theCuts[sel_index].first.back().asString(AS_STR_INSETS)
 791                 : docstring();
 792 }
 793
 794
 795 void pasteParagraphList(Cursor & cur, ParagraphList const & parlist,
 796                         DocumentClass const * const docclass, ErrorList & errorList)
 797 {
 798         if (cur.inTexted()) {
 799                 Text * text = cur.text();
 800                 LASSERT(text, /**/);
 801
 802                 pit_type endpit;
 803                 PitPosPair ppp;
 804
 805                 boost::tie(ppp, endpit) =
 806                         pasteSelectionHelper(cur, parlist, docclass, errorList);
 807                 updateLabels(cur.buffer());
 808                 cur.clearSelection();
 809                 text->setCursor(cur, ppp.first, ppp.second);
 810         }
 811
 812         // mathed is handled in InsetMathNest/InsetMathGrid
 813         LASSERT(!cur.inMathed(), /**/);
 814 }
 815
 816
 817 void pasteFromStack(Cursor & cur, ErrorList & errorList, size_t sel_index)
 818 {
 819         // this does not make sense, if there is nothing to paste
 820         if (!checkPastePossible(sel_index))
 821                 return;
 822
 823         cur.recordUndo();
 824         pasteParagraphList(cur, theCuts[sel_index].first,
 825                            theCuts[sel_index].second, errorList);
 826         cur.setSelection();
 827 }
 828
 829
 830 void pasteClipboardText(Cursor & cur, ErrorList & errorList, bool asParagraphs)
 831 {
 832         // Use internal clipboard if it is the most recent one
 833         if (theClipboard().isInternal()) {
 834                 pasteFromStack(cur, errorList, 0);
 835                 return;
 836         }
 837
 838         // First try LyX format
 839         if (theClipboard().hasLyXContents()) {
 840                 string lyx = theClipboard().getAsLyX();
 841                 if (!lyx.empty()) {
 842                         // For some strange reason gcc 3.2 and 3.3 do not accept
 843                         // Buffer buffer(string(), false);
 844                         Buffer buffer("", false);
 845                         buffer.setUnnamed(true);
 846                         if (buffer.readString(lyx)) {
 847                                 cur.recordUndo();
 848                                 pasteParagraphList(cur, buffer.paragraphs(),
 849                                         buffer.params().documentClassPtr(), errorList);
 850                                 cur.setSelection();
 851                                 return;
 852                         }
 853                 }
 854         }
 855
 856         // Then try plain text
 857         docstring const text = theClipboard().getAsText();
 858         if (text.empty())
 859                 return;
 860         cur.recordUndo();
 861         if (asParagraphs)
 862                 cur.text()->insertStringAsParagraphs(cur, text);
 863         else
 864                 cur.text()->insertStringAsLines(cur, text);
 865 }
 866
 867
 868 void pasteClipboardGraphics(Cursor & cur, ErrorList & /* errorList */,
 869                             Clipboard::GraphicsType preferedType)
 870 {
 871         LASSERT(theClipboard().hasGraphicsContents(preferedType), /**/);
 872
 873         // get picture from clipboard
 874         FileName filename = theClipboard().getAsGraphics(cur, preferedType);
 875         if (filename.empty())
 876                 return;
 877
 878         // create inset for graphic
 879         InsetGraphics * inset = new InsetGraphics(cur.buffer());
 880         InsetGraphicsParams params;
 881         params.filename = support::DocFileName(filename.absFilename());
 882         inset->setParams(params);
 883         cur.recordUndo();
 884         cur.insert(inset);
 885 }
 886
 887
 888 void pasteSelection(Cursor & cur, ErrorList & errorList)
 889 {
 890         if (selectionBuffer.empty())
 891                 return;
 892         cur.recordUndo();
 893         pasteParagraphList(cur, selectionBuffer[0].first,
 894                            selectionBuffer[0].second, errorList);
 895 }
 896
 897
 898 void replaceSelectionWithString(Cursor & cur, docstring const & str, bool backwards)
 899 {
 900         cur.recordUndo();
 901         DocIterator selbeg = cur.selectionBegin();
 902
 903         // Get font setting before we cut
 904         Font const font =
 905                 selbeg.paragraph().getFontSettings(cur.buffer().params(), selbeg.pos());
 906
 907         // Insert the new string
 908         pos_type pos = cur.selEnd().pos();
 909         Paragraph & par = cur.selEnd().paragraph();
 910         docstring::const_iterator cit = str.begin();
 911         docstring::const_iterator end = str.end();
 912         for (; cit != end; ++cit, ++pos)
 913                 par.insertChar(pos, *cit, font, cur.buffer().params().trackChanges);
 914
 915         // Cut the selection
 916         cutSelection(cur, true, false);
 917
 918         // select the replacement
 919         if (backwards) {
 920                 selbeg.pos() += str.length();
 921                 cur.setSelection(selbeg, -int(str.length()));
 922         } else
 923                 cur.setSelection(selbeg, str.length());
 924 }
 925
 926
 927 void replaceSelection(Cursor & cur)
 928 {
 929         if (cur.selection())
 930                 cutSelection(cur, true, false);
 931 }
 932
 933
 934 void eraseSelection(Cursor & cur)
 935 {
 936         //lyxerr << "cap::eraseSelection begin: " << cur << endl;
 937         CursorSlice const & i1 = cur.selBegin();
 938         CursorSlice const & i2 = cur.selEnd();
 939         if (i1.inset().asInsetMath()) {
 940                 saveSelection(cur);
 941                 cur.top() = i1;
 942                 if (i1.idx() == i2.idx()) {
 943                         i1.cell().erase(i1.pos(), i2.pos());
 944                         // We may have deleted i1.cell(cur.pos()).
 945                         // Make sure that pos is valid.
 946                         if (cur.pos() > cur.lastpos())
 947                                 cur.pos() = cur.lastpos();
 948                 } else {
 949                         InsetMath * p = i1.asInsetMath();
 950                         Inset::row_type r1, r2;
 951                         Inset::col_type c1, c2;
 952                         region(i1, i2, r1, r2, c1, c2);
 953                         for (Inset::row_type row = r1; row <= r2; ++row)
 954                                 for (Inset::col_type col = c1; col <= c2; ++col)
 955                                         p->cell(p->index(row, col)).clear();
 956                         // We've deleted the whole cell. Only pos 0 is valid.
 957                         cur.pos() = 0;
 958                 }
 959                 // need a valid cursor. (Lgb)
 960                 cur.clearSelection();
 961         } else {
 962                 lyxerr << "can't erase this selection 1" << endl;
 963         }
 964         //lyxerr << "cap::eraseSelection end: " << cur << endl;
 965 }
 966
 967
 968 void selDel(Cursor & cur)
 969 {
 970         //lyxerr << "cap::selDel" << endl;
 971         if (cur.selection())
 972                 eraseSelection(cur);
 973 }
 974
 975
 976 void selClearOrDel(Cursor & cur)
 977 {
 978         //lyxerr << "cap::selClearOrDel" << endl;
 979         if (lyxrc.auto_region_delete)
 980                 selDel(cur);
 981         else
 982                 cur.selection() = false;
 983 }
 984
 985
 986 docstring grabSelection(Cursor const & cur)
 987 {
 988         if (!cur.selection())
 989                 return docstring();
 990
 991 #if 0
 992         // grab selection by glueing multiple cells together. This is not what
 993         // we want because selections spanning multiple cells will get "&" and "\\"
 994         // seperators.
 995         ostringstream os;
 996         for (DocIterator dit = cur.selectionBegin();
 997              dit != cur.selectionEnd(); dit.forwardPos())
 998                 os << asString(dit.cell());
 999         return os.str();
1000 #endif
1001
1002         CursorSlice i1 = cur.selBegin();
1003         CursorSlice i2 = cur.selEnd();
1004
1005         if (i1.idx() == i2.idx()) {
1006                 if (i1.inset().asInsetMath()) {
1007                         MathData::const_iterator it = i1.cell().begin();
1008                         return asString(MathData(it + i1.pos(), it + i2.pos()));
1009                 } else {
1010                         return from_ascii("unknown selection 1");
1011                 }
1012         }
1013
1014         Inset::row_type r1, r2;
1015         Inset::col_type c1, c2;
1016         region(i1, i2, r1, r2, c1, c2);
1017
1018         docstring data;
1019         if (i1.inset().asInsetMath()) {
1020                 for (Inset::row_type row = r1; row <= r2; ++row) {
1021                         if (row > r1)
1022                                 data += "\\\\";
1023                         for (Inset::col_type col = c1; col <= c2; ++col) {
1024                                 if (col > c1)
1025                                         data += '&';
1026                                 data += asString(i1.asInsetMath()->
1027                                         cell(i1.asInsetMath()->index(row, col)));
1028                         }
1029                 }
1030         } else {
1031                 data = from_ascii("unknown selection 2");
1032         }
1033         return data;
1034 }
1035
1036
1037 void dirtyTabularStack(bool b)
1038 {
1039         dirty_tabular_stack_ = b;
1040 }
1041
1042
1043 bool tabularStackDirty()
1044 {
1045         return dirty_tabular_stack_;
1046 }
1047
1048
1049 } // namespace cap
1050
1051 } // namespace lyx