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 "BufferParams.h"
  21 #include "BufferView.h"
  22 #include "Changes.h"
  23 #include "Cursor.h"
  24 #include "ErrorList.h"
  25 #include "FuncRequest.h"
  26 #include "InsetIterator.h"
  27 #include "InsetList.h"
  28 #include "Language.h"
  29 #include "lfuns.h"
  30 #include "LyXFunc.h"
  31 #include "LyXRC.h"
  32 #include "Text.h"
  33 #include "Paragraph.h"
  34 #include "paragraph_funcs.h"
  35 #include "ParagraphParameters.h"
  36 #include "ParIterator.h"
  37 #include "Undo.h"
  38
  39 #include "insets/InsetFlex.h"
  40 #include "insets/InsetCommand.h"
  41 #include "insets/InsetGraphics.h"
  42 #include "insets/InsetGraphicsParams.h"
  43 #include "insets/InsetTabular.h"
  44
  45 #include "mathed/MathData.h"
  46 #include "mathed/InsetMath.h"
  47 #include "mathed/MathSupport.h"
  48
  49 #include "support/debug.h"
  50 #include "support/docstream.h"
  51 #include "support/gettext.h"
  52 #include "support/limited_stack.h"
  53 #include "support/lstrings.h"
  54
  55 #include "frontends/Clipboard.h"
  56 #include "frontends/Selection.h"
  57
  58 #include <boost/tuple/tuple.hpp>
  59 #include <boost/next_prior.hpp>
  60
  61 #include <string>
  62
  63 using namespace std;
  64 using namespace lyx::support;
  65 using lyx::frontend::Clipboard;
  66
  67 namespace lyx {
  68
  69 namespace {
  70
  71 typedef pair<pit_type, int> PitPosPair;
  72
  73 typedef limited_stack<pair<ParagraphList, DocumentClass const *> > CutStack;
  74
  75 CutStack theCuts(10);
  76 // persistent selection, cleared until the next selection
  77 CutStack selectionBuffer(1);
  78
  79 // store whether the tabular stack is newer than the normal copy stack
  80 // FIXME: this is a workaround for bug 1919. Should be removed for 1.5,
  81 // when we (hopefully) have a one-for-all paste mechanism.
  82 bool dirty_tabular_stack_ = false;
  83
  84
  85 void region(CursorSlice const & i1, CursorSlice const & i2,
  86         Inset::row_type & r1, Inset::row_type & r2,
  87         Inset::col_type & c1, Inset::col_type & c2)
  88 {
  89         Inset & p = i1.inset();
  90         c1 = p.col(i1.idx());
  91         c2 = p.col(i2.idx());
  92         if (c1 > c2)
  93                 swap(c1, c2);
  94         r1 = p.row(i1.idx());
  95         r2 = p.row(i2.idx());
  96         if (r1 > r2)
  97                 swap(r1, r2);
  98 }
  99
 100
 101 bool checkPastePossible(int index)
 102 {
 103         return size_t(index) < theCuts.size() && !theCuts[index].first.empty();
 104 }
 105
 106
 107 pair<PitPosPair, pit_type>
 108 pasteSelectionHelper(Cursor & cur, ParagraphList const & parlist,
 109                      DocumentClass const * const docclass, ErrorList & errorlist)
 110 {
 111         Buffer const & buffer = cur.buffer();
 112         pit_type pit = cur.pit();
 113         pos_type pos = cur.pos();
 114         ParagraphList & pars = cur.text()->paragraphs();
 115
 116         if (parlist.empty())
 117                 return make_pair(PitPosPair(pit, pos), pit);
 118
 119         BOOST_ASSERT (pos <= pars[pit].size());
 120
 121         // Make a copy of the CaP paragraphs.
 122         ParagraphList insertion = parlist;
 123         DocumentClass const * const tc = buffer.params().documentClassPtr();
 124
 125         // Now remove all out of the pars which is NOT allowed in the
 126         // new environment and set also another font if that is required.
 127
 128         // Convert newline to paragraph break in ERT inset.
 129         // This should not be here!
 130         Inset * inset = pars[pit].inInset();
 131         if (inset && (inset->lyxCode() == ERT_CODE ||
 132                         inset->lyxCode() == LISTINGS_CODE)) {
 133                 for (size_t i = 0; i != insertion.size(); ++i) {
 134                         for (pos_type j = 0; j != insertion[i].size(); ++j) {
 135                                 if (insertion[i].isNewline(j)) {
 136                                         // do not track deletion of newline
 137                                         insertion[i].eraseChar(j, false);
 138                                         breakParagraphConservative(
 139                                                         buffer.params(),
 140                                                         insertion, i, j);
 141                                 }
 142                         }
 143                 }
 144         }
 145
 146         // set the paragraphs to empty layout if necessary
 147         // note that we are doing this if the empty layout is
 148         // supposed to be the default, not just if it is forced
 149         if (cur.inset().useEmptyLayout()) {
 150                 LayoutPtr const layout =
 151                         buffer.params().documentClass().emptyLayout();
 152                 ParagraphList::iterator const end = insertion.end();
 153                 for (ParagraphList::iterator par = insertion.begin();
 154                                 par != end; ++par)
 155                         par->setLayout(layout);
 156         }
 157
 158         // Make sure there is no class difference.
 159         InsetText in;
 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(docclass, tc, 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         Buffer buffer("", false);
 367         buffer.setUnnamed(true);
 368         buffer.paragraphs() = paragraphs;
 369         buffer.params().setDocumentClass(docclass);
 370         ostringstream lyx;
 371         if (buffer.write(lyx))
 372                 theClipboard().put(lyx.str(), plaintext);
 373         else
 374                 theClipboard().put(string(), plaintext);
 375 }
 376
 377
 378 void copySelectionHelper(Buffer const & buf, ParagraphList & pars,
 379         pit_type startpit, pit_type endpit,
 380         int start, int end, DocumentClass const * const dc, CutStack & cutstack)
 381 {
 382         BOOST_ASSERT(0 <= start && start <= pars[startpit].size());
 383         BOOST_ASSERT(0 <= end && end <= pars[endpit].size());
 384         BOOST_ASSERT(startpit != endpit || start <= end);
 385
 386         // Clone the paragraphs within the selection.
 387         ParagraphList copy_pars(boost::next(pars.begin(), startpit),
 388                                 boost::next(pars.begin(), endpit + 1));
 389
 390         // Remove the end of the last paragraph; afterwards, remove the
 391         // beginning of the first paragraph. Keep this order - there may only
 392         // be one paragraph!  Do not track deletions here; this is an internal
 393         // action not visible to the user
 394
 395         Paragraph & back = copy_pars.back();
 396         back.eraseChars(end, back.size(), false);
 397         Paragraph & front = copy_pars.front();
 398         front.eraseChars(0, start, false);
 399
 400         ParagraphList::iterator it = copy_pars.begin();
 401         ParagraphList::iterator it_end = copy_pars.end();
 402
 403         for (; it != it_end; it++) {
 404                 // ERT paragraphs have the Language latex_language.
 405                 // This is invalid outside of ERT, so we need to change it
 406                 // to the buffer language.
 407                 if (it->ownerCode() == ERT_CODE || it->ownerCode() == LISTINGS_CODE) {
 408                         it->changeLanguage(buf.params(), latex_language, buf.language());
 409                 }
 410                 it->setInsetOwner(0);
 411         }
 412
 413         // do not copy text (also nested in insets) which is marked as deleted
 414         acceptChanges(copy_pars, buf.params());
 415
 416         DocumentClass * d = const_cast<DocumentClass *>(dc);
 417         cutstack.push(make_pair(copy_pars, d));
 418 }
 419
 420 } // namespace anon
 421
 422
 423
 424
 425 namespace cap {
 426
 427 docstring grabAndEraseSelection(Cursor & cur)
 428 {
 429         if (!cur.selection())
 430                 return docstring();
 431         docstring res = grabSelection(cur);
 432         eraseSelection(cur);
 433         return res;
 434 }
 435
 436
 437 void switchBetweenClasses(DocumentClass const * const oldone,
 438                 DocumentClass const * const newone, InsetText & in, ErrorList & errorlist)
 439 {
 440         errorlist.clear();
 441
 442         BOOST_ASSERT(!in.paragraphs().empty());
 443         if (oldone == newone)
 444                 return;
 445
 446         DocumentClass const & oldtc = *oldone;
 447         DocumentClass const & newtc = *newone;
 448
 449         // layouts
 450         ParIterator end = par_iterator_end(in);
 451         for (ParIterator it = par_iterator_begin(in); it != end; ++it) {
 452                 docstring const name = it->layout()->name();
 453                 bool hasLayout = newtc.hasLayout(name);
 454
 455                 if (in.useEmptyLayout())
 456                         it->setLayout(newtc.emptyLayout());
 457                 else if (hasLayout)
 458                         it->setLayout(newtc[name]);
 459                 else
 460                         it->setLayout(newtc.defaultLayout());
 461
 462                 if (!hasLayout && name != oldtc.defaultLayoutName()) {
 463                         docstring const s = bformat(
 464                                                  _("Layout had to be changed from\n%1$s to %2$s\n"
 465                                                 "because of class conversion from\n%3$s to %4$s"),
 466                          name, it->layout()->name(),
 467                          from_utf8(oldtc.name()), from_utf8(newtc.name()));
 468                         // To warn the user that something had to be done.
 469                         errorlist.push_back(ErrorItem(_("Changed Layout"), s,
 470                                                       it->id(), 0,
 471                                                       it->size()));
 472                 }
 473         }
 474
 475         // character styles
 476         InsetIterator const i_end = inset_iterator_end(in);
 477         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 478                 InsetCollapsable * inset = it->asInsetCollapsable();
 479                 if (!inset)
 480                         continue;
 481                 if (inset->lyxCode() != FLEX_CODE)
 482                         // FIXME: Should we verify all InsetCollapsable?
 483                         continue;
 484                 inset->setLayout(newone);
 485                 if (!inset->undefined())
 486                         continue;
 487                 // The flex inset is undefined in newtc
 488                 docstring const s = bformat(_(
 489                         "Flex inset %1$s is "
 490                         "undefined because of class "
 491                         "conversion from\n%2$s to %3$s"),
 492                         inset->name(), from_utf8(oldtc.name()),
 493                         from_utf8(newtc.name()));
 494                 // To warn the user that something had to be done.
 495                 errorlist.push_back(ErrorItem(
 496                                 _("Undefined flex inset"),
 497                                 s, it.paragraph().id(), it.pos(), it.pos() + 1));
 498         }
 499 }
 500
 501
 502 vector<docstring> availableSelections()
 503 {
 504         vector<docstring> selList;
 505
 506         CutStack::const_iterator cit = theCuts.begin();
 507         CutStack::const_iterator end = theCuts.end();
 508         for (; cit != end; ++cit) {
 509                 // we do not use cit-> here because gcc 2.9x does not
 510                 // like it (JMarc)
 511                 ParagraphList const & pars = (*cit).first;
 512                 docstring asciiSel;
 513                 ParagraphList::const_iterator pit = pars.begin();
 514                 ParagraphList::const_iterator pend = pars.end();
 515                 for (; pit != pend; ++pit) {
 516                         asciiSel += pit->asString(false);
 517                         if (asciiSel.size() > 25) {
 518                                 asciiSel.replace(22, docstring::npos,
 519                                                  from_ascii("..."));
 520                                 break;
 521                         }
 522                 }
 523
 524                 selList.push_back(asciiSel);
 525         }
 526
 527         return selList;
 528 }
 529
 530
 531 size_type numberOfSelections()
 532 {
 533         return theCuts.size();
 534 }
 535
 536
 537 void cutSelection(Cursor & cur, bool doclear, bool realcut)
 538 {
 539         // This doesn't make sense, if there is no selection
 540         if (!cur.selection())
 541                 return;
 542
 543         // OK, we have a selection. This is always between cur.selBegin()
 544         // and cur.selEnd()
 545
 546         if (cur.inTexted()) {
 547                 Text * text = cur.text();
 548                 BOOST_ASSERT(text);
 549
 550                 saveSelection(cur);
 551
 552                 // make sure that the depth behind the selection are restored, too
 553                 cur.recordUndoSelection();
 554                 pit_type begpit = cur.selBegin().pit();
 555                 pit_type endpit = cur.selEnd().pit();
 556
 557                 int endpos = cur.selEnd().pos();
 558
 559                 BufferParams const & bp = cur.buffer().params();
 560                 if (realcut) {
 561                         copySelectionHelper(cur.buffer(),
 562                                 text->paragraphs(),
 563                                 begpit, endpit,
 564                                 cur.selBegin().pos(), endpos,
 565                                 bp.documentClassPtr(), theCuts);
 566                         // Stuff what we got on the clipboard.
 567                         // Even if there is no selection.
 568                         putClipboard(theCuts[0].first, theCuts[0].second,
 569                                 cur.selectionAsString(true));
 570                 }
 571
 572                 boost::tie(endpit, endpos) =
 573                         eraseSelectionHelper(bp,
 574                                 text->paragraphs(),
 575                                 begpit, endpit,
 576                                 cur.selBegin().pos(), endpos);
 577
 578                 // cutSelection can invalidate the cursor so we need to set
 579                 // it anew. (Lgb)
 580                 // we prefer the end for when tracking changes
 581                 cur.pos() = endpos;
 582                 cur.pit() = endpit;
 583
 584                 // sometimes necessary
 585                 if (doclear
 586                         && text->paragraphs()[begpit].stripLeadingSpaces(bp.trackChanges))
 587                         cur.fixIfBroken();
 588
 589                 // need a valid cursor. (Lgb)
 590                 cur.clearSelection();
 591                 updateLabels(cur.buffer());
 592
 593                 // tell tabular that a recent copy happened
 594                 dirtyTabularStack(false);
 595         }
 596
 597         if (cur.inMathed()) {
 598                 if (cur.selBegin().idx() != cur.selEnd().idx()) {
 599                         // The current selection spans more than one cell.
 600                         // Record all cells
 601                         cur.recordUndoInset();
 602                 } else {
 603                         // Record only the current cell to avoid a jumping
 604                         // cursor after undo
 605                         cur.recordUndo();
 606                 }
 607                 if (realcut)
 608                         copySelection(cur);
 609                 eraseSelection(cur);
 610         }
 611 }
 612
 613
 614 void copySelection(Cursor & cur)
 615 {
 616         copySelection(cur, cur.selectionAsString(true));
 617 }
 618
 619
 620 namespace {
 621
 622 void copySelectionToStack(Cursor & cur, CutStack & cutstack)
 623 {
 624         // this doesn't make sense, if there is no selection
 625         if (!cur.selection())
 626                 return;
 627
 628         // copySelection can not yet handle the case of cross idx selection
 629         if (cur.selBegin().idx() != cur.selEnd().idx())
 630                 return;
 631
 632         if (cur.inTexted()) {
 633                 Text * text = cur.text();
 634                 BOOST_ASSERT(text);
 635                 // ok we have a selection. This is always between cur.selBegin()
 636                 // and sel_end cursor
 637
 638                 // copy behind a space if there is one
 639                 ParagraphList & pars = text->paragraphs();
 640                 pos_type pos = cur.selBegin().pos();
 641                 pit_type par = cur.selBegin().pit();
 642                 while (pos < pars[par].size() &&
 643                        pars[par].isLineSeparator(pos) &&
 644                        (par != cur.selEnd().pit() || pos < cur.selEnd().pos()))
 645                         ++pos;
 646
 647                 copySelectionHelper(cur.buffer(), pars, par, cur.selEnd().pit(),
 648                         pos, cur.selEnd().pos(),
 649                         cur.buffer().params().documentClassPtr(), cutstack);
 650                 dirtyTabularStack(false);
 651         }
 652
 653         if (cur.inMathed()) {
 654                 //lyxerr << "copySelection in mathed" << endl;
 655                 ParagraphList pars;
 656                 Paragraph par;
 657                 BufferParams const & bp = cur.buffer().params();
 658                 // FIXME This should be the empty layout...right?
 659                 par.setLayout(bp.documentClass().emptyLayout());
 660                 par.insert(0, grabSelection(cur), Font(), Change(Change::UNCHANGED));
 661                 pars.push_back(par);
 662                 cutstack.push(make_pair(pars, bp.documentClassPtr()));
 663         }
 664 }
 665
 666 }
 667
 668
 669 void copySelectionToStack()
 670 {
 671         if (!selectionBuffer.empty())
 672                 theCuts.push(selectionBuffer[0]);
 673 }
 674
 675
 676 void copySelection(Cursor & cur, docstring const & plaintext)
 677 {
 678         // In tablemode, because copy and paste actually use special table stack
 679         // we do not attempt to get selected paragraphs under cursor. Instead, a
 680         // paragraph with the plain text version is generated so that table cells
 681         // can be pasted as pure text somewhere else.
 682         if (cur.selBegin().idx() != cur.selEnd().idx()) {
 683                 ParagraphList pars;
 684                 Paragraph par;
 685                 BufferParams const & bp = cur.buffer().params();
 686                 par.setLayout(bp.documentClass().emptyLayout());
 687                 par.insert(0, plaintext, Font(), Change(Change::UNCHANGED));
 688                 pars.push_back(par);
 689                 theCuts.push(make_pair(pars, bp.documentClassPtr()));
 690         } else {
 691                 copySelectionToStack(cur, theCuts);
 692         }
 693
 694         // stuff the selection onto the X clipboard, from an explicit copy request
 695         putClipboard(theCuts[0].first, theCuts[0].second, plaintext);
 696 }
 697
 698
 699 void saveSelection(Cursor & cur)
 700 {
 701         // This function is called, not when a selection is formed, but when
 702         // a selection is cleared. Therefore, multiple keyboard selection
 703         // will not repeatively trigger this function (bug 3877).
 704         if (cur.selection()
 705             && cur.selBegin() == cur.bv().cursor().selBegin()
 706             && cur.selEnd() == cur.bv().cursor().selEnd()) {
 707                 LYXERR(Debug::ACTION, "'" << cur.selectionAsString(true) << "'");
 708                 copySelectionToStack(cur, selectionBuffer);
 709         }
 710 }
 711
 712
 713 bool selection()
 714 {
 715         return !selectionBuffer.empty();
 716 }
 717
 718
 719 void clearSelection()
 720 {
 721         selectionBuffer.clear();
 722 }
 723
 724
 725 void clearCutStack()
 726 {
 727         theCuts.clear();
 728 }
 729
 730
 731 docstring selection(size_t sel_index)
 732 {
 733         return sel_index < theCuts.size()
 734                 ? theCuts[sel_index].first.back().asString(false)
 735                 : docstring();
 736 }
 737
 738
 739 void pasteParagraphList(Cursor & cur, ParagraphList const & parlist,
 740                         DocumentClass const * const docclass, ErrorList & errorList)
 741 {
 742         if (cur.inTexted()) {
 743                 Text * text = cur.text();
 744                 BOOST_ASSERT(text);
 745
 746                 pit_type endpit;
 747                 PitPosPair ppp;
 748
 749                 boost::tie(ppp, endpit) =
 750                         pasteSelectionHelper(cur, parlist, docclass, errorList);
 751                 updateLabels(cur.buffer());
 752                 cur.clearSelection();
 753                 text->setCursor(cur, ppp.first, ppp.second);
 754         }
 755
 756         // mathed is handled in InsetMathNest/InsetMathGrid
 757         BOOST_ASSERT(!cur.inMathed());
 758 }
 759
 760
 761 void pasteFromStack(Cursor & cur, ErrorList & errorList, size_t sel_index)
 762 {
 763         // this does not make sense, if there is nothing to paste
 764         if (!checkPastePossible(sel_index))
 765                 return;
 766
 767         cur.recordUndo();
 768         pasteParagraphList(cur, theCuts[sel_index].first,
 769                            theCuts[sel_index].second, errorList);
 770         cur.setSelection();
 771 }
 772
 773
 774 void pasteClipboardText(Cursor & cur, ErrorList & errorList, bool asParagraphs)
 775 {
 776         // Use internal clipboard if it is the most recent one
 777         if (theClipboard().isInternal()) {
 778                 pasteFromStack(cur, errorList, 0);
 779                 return;
 780         }
 781
 782         // First try LyX format
 783         if (theClipboard().hasLyXContents()) {
 784                 string lyx = theClipboard().getAsLyX();
 785                 if (!lyx.empty()) {
 786                         // For some strange reason gcc 3.2 and 3.3 do not accept
 787                         // Buffer buffer(string(), false);
 788                         Buffer buffer("", false);
 789                         buffer.setUnnamed(true);
 790                         if (buffer.readString(lyx)) {
 791                                 cur.recordUndo();
 792                                 pasteParagraphList(cur, buffer.paragraphs(),
 793                                         buffer.params().documentClassPtr(), errorList);
 794                                 cur.setSelection();
 795                                 return;
 796                         }
 797                 }
 798         }
 799
 800         // Then try plain text
 801         docstring const text = theClipboard().getAsText();
 802         if (text.empty())
 803                 return;
 804         cur.recordUndo();
 805         if (asParagraphs)
 806                 cur.text()->insertStringAsParagraphs(cur, text);
 807         else
 808                 cur.text()->insertStringAsLines(cur, text);
 809 }
 810
 811
 812 void pasteClipboardGraphics(Cursor & cur, ErrorList & /* errorList */,
 813                             Clipboard::GraphicsType preferedType)
 814 {
 815         BOOST_ASSERT(theClipboard().hasGraphicsContents(preferedType));
 816
 817         // get picture from clipboard
 818         FileName filename = theClipboard().getAsGraphics(cur, preferedType);
 819         if (filename.empty())
 820                 return;
 821
 822         // create inset for graphic
 823         InsetGraphics * inset = new InsetGraphics;
 824         InsetGraphicsParams params;
 825         params.filename = EmbeddedFile(filename.absFilename(), cur.buffer().filePath());
 826         inset->setParams(params);
 827         cur.recordUndo();
 828         cur.insert(inset);
 829 }
 830
 831
 832 void pasteSelection(Cursor & cur, ErrorList & errorList)
 833 {
 834         if (selectionBuffer.empty())
 835                 return;
 836         cur.recordUndo();
 837         pasteParagraphList(cur, selectionBuffer[0].first,
 838                            selectionBuffer[0].second, errorList);
 839 }
 840
 841
 842 void replaceSelectionWithString(Cursor & cur, docstring const & str, bool backwards)
 843 {
 844         cur.recordUndo();
 845         DocIterator selbeg = cur.selectionBegin();
 846
 847         // Get font setting before we cut
 848         Font const font =
 849                 selbeg.paragraph().getFontSettings(cur.buffer().params(), selbeg.pos());
 850
 851         // Insert the new string
 852         pos_type pos = cur.selEnd().pos();
 853         Paragraph & par = cur.selEnd().paragraph();
 854         docstring::const_iterator cit = str.begin();
 855         docstring::const_iterator end = str.end();
 856         for (; cit != end; ++cit, ++pos)
 857                 par.insertChar(pos, *cit, font, cur.buffer().params().trackChanges);
 858
 859         // Cut the selection
 860         cutSelection(cur, true, false);
 861
 862         // select the replacement
 863         if (backwards) {
 864                 selbeg.pos() += str.length();
 865                 cur.setSelection(selbeg, -int(str.length()));
 866         } else
 867                 cur.setSelection(selbeg, str.length());
 868 }
 869
 870
 871 void replaceSelection(Cursor & cur)
 872 {
 873         if (cur.selection())
 874                 cutSelection(cur, true, false);
 875 }
 876
 877
 878 void eraseSelection(Cursor & cur)
 879 {
 880         //lyxerr << "cap::eraseSelection begin: " << cur << endl;
 881         CursorSlice const & i1 = cur.selBegin();
 882         CursorSlice const & i2 = cur.selEnd();
 883         if (i1.inset().asInsetMath()) {
 884                 saveSelection(cur);
 885                 cur.top() = i1;
 886                 if (i1.idx() == i2.idx()) {
 887                         i1.cell().erase(i1.pos(), i2.pos());
 888                         // We may have deleted i1.cell(cur.pos()).
 889                         // Make sure that pos is valid.
 890                         if (cur.pos() > cur.lastpos())
 891                                 cur.pos() = cur.lastpos();
 892                 } else {
 893                         InsetMath * p = i1.asInsetMath();
 894                         Inset::row_type r1, r2;
 895                         Inset::col_type c1, c2;
 896                         region(i1, i2, r1, r2, c1, c2);
 897                         for (Inset::row_type row = r1; row <= r2; ++row)
 898                                 for (Inset::col_type col = c1; col <= c2; ++col)
 899                                         p->cell(p->index(row, col)).clear();
 900                         // We've deleted the whole cell. Only pos 0 is valid.
 901                         cur.pos() = 0;
 902                 }
 903                 // need a valid cursor. (Lgb)
 904                 cur.clearSelection();
 905         } else {
 906                 lyxerr << "can't erase this selection 1" << endl;
 907         }
 908         //lyxerr << "cap::eraseSelection end: " << cur << endl;
 909 }
 910
 911
 912 void selDel(Cursor & cur)
 913 {
 914         //lyxerr << "cap::selDel" << endl;
 915         if (cur.selection())
 916                 eraseSelection(cur);
 917 }
 918
 919
 920 void selClearOrDel(Cursor & cur)
 921 {
 922         //lyxerr << "cap::selClearOrDel" << endl;
 923         if (lyxrc.auto_region_delete)
 924                 selDel(cur);
 925         else
 926                 cur.selection() = false;
 927 }
 928
 929
 930 docstring grabSelection(Cursor const & cur)
 931 {
 932         if (!cur.selection())
 933                 return docstring();
 934
 935         // FIXME: What is wrong with the following?
 936 #if 0
 937         ostringstream os;
 938         for (DocIterator dit = cur.selectionBegin();
 939              dit != cur.selectionEnd(); dit.forwardPos())
 940                 os << asString(dit.cell());
 941         return os.str();
 942 #endif
 943
 944         CursorSlice i1 = cur.selBegin();
 945         CursorSlice i2 = cur.selEnd();
 946
 947         if (i1.idx() == i2.idx()) {
 948                 if (i1.inset().asInsetMath()) {
 949                         MathData::const_iterator it = i1.cell().begin();
 950                         return asString(MathData(it + i1.pos(), it + i2.pos()));
 951                 } else {
 952                         return from_ascii("unknown selection 1");
 953                 }
 954         }
 955
 956         Inset::row_type r1, r2;
 957         Inset::col_type c1, c2;
 958         region(i1, i2, r1, r2, c1, c2);
 959
 960         docstring data;
 961         if (i1.inset().asInsetMath()) {
 962                 for (Inset::row_type row = r1; row <= r2; ++row) {
 963                         if (row > r1)
 964                                 data += "\\\\";
 965                         for (Inset::col_type col = c1; col <= c2; ++col) {
 966                                 if (col > c1)
 967                                         data += '&';
 968                                 data += asString(i1.asInsetMath()->
 969                                         cell(i1.asInsetMath()->index(row, col)));
 970                         }
 971                 }
 972         } else {
 973                 data = from_ascii("unknown selection 2");
 974         }
 975         return data;
 976 }
 977
 978
 979 void dirtyTabularStack(bool b)
 980 {
 981         dirty_tabular_stack_ = b;
 982 }
 983
 984
 985 bool tabularStackDirty()
 986 {
 987         return dirty_tabular_stack_;
 988 }
 989
 990
 991 } // namespace cap
 992
 993 } // namespace lyx