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 "TextClassList.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/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, TextClassPtr> > 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                      TextClassPtr textclass, 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         TextClassPtr const tc = buffer.params().getTextClassPtr();
 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         if (pars[pit].inInset() &&
 131             (pars[pit].inInset()->lyxCode() == ERT_CODE ||
 132                 pars[pit].inInset()->lyxCode() == LISTINGS_CODE)) {
 133                 for (ParagraphList::size_type 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         // If we are in an inset which returns forceDefaultParagraphs,
 147         // set the paragraphs to default
 148         if (cur.inset().forceDefaultParagraphs(cur.idx())) {
 149                 LayoutPtr const layout =
 150                         buffer.params().getTextClass().defaultLayout();
 151                 ParagraphList::iterator const end = insertion.end();
 152                 for (ParagraphList::iterator par = insertion.begin();
 153                                 par != end; ++par)
 154                         par->layout(layout);
 155         }
 156
 157         // Make sure there is no class difference.
 158         InsetText in;
 159         // This works without copying any paragraph data because we have
 160         // a specialized swap method for ParagraphList. This is important
 161         // since we store pointers to insets at some places and we don't
 162         // want to invalidate them.
 163         insertion.swap(in.paragraphs());
 164         cap::switchBetweenClasses(textclass, tc, in, errorlist);
 165         insertion.swap(in.paragraphs());
 166
 167         ParagraphList::iterator tmpbuf = insertion.begin();
 168         int depth_delta = pars[pit].params().depth() - tmpbuf->params().depth();
 169
 170         depth_type max_depth = pars[pit].getMaxDepthAfter();
 171
 172         for (; tmpbuf != insertion.end(); ++tmpbuf) {
 173                 // If we have a negative jump so that the depth would
 174                 // go below 0 depth then we have to redo the delta to
 175                 // this new max depth level so that subsequent
 176                 // paragraphs are aligned correctly to this paragraph
 177                 // at level 0.
 178                 if (int(tmpbuf->params().depth()) + depth_delta < 0)
 179                         depth_delta = 0;
 180
 181                 // Set the right depth so that we are not too deep or shallow.
 182                 tmpbuf->params().depth(tmpbuf->params().depth() + depth_delta);
 183                 if (tmpbuf->params().depth() > max_depth)
 184                         tmpbuf->params().depth(max_depth);
 185
 186                 // Only set this from the 2nd on as the 2nd depends
 187                 // for maxDepth still on pit.
 188                 if (tmpbuf != insertion.begin())
 189                         max_depth = tmpbuf->getMaxDepthAfter();
 190
 191                 // Set the inset owner of this paragraph.
 192                 tmpbuf->setInsetOwner(pars[pit].inInset());
 193                 for (pos_type i = 0; i < tmpbuf->size(); ++i) {
 194                         if (tmpbuf->isInset(i) &&
 195                             !pars[pit].insetAllowed(tmpbuf->getInset(i)->lyxCode()))
 196                                 // do not track deletion of invalid insets
 197                                 tmpbuf->eraseChar(i--, false);
 198                 }
 199
 200                 tmpbuf->setChange(Change(buffer.params().trackChanges ?
 201                                          Change::INSERTED : Change::UNCHANGED));
 202         }
 203
 204         bool const empty = pars[pit].empty();
 205         if (!empty) {
 206                 // Make the buf exactly the same layout as the cursor
 207                 // paragraph.
 208                 insertion.begin()->makeSameLayout(pars[pit]);
 209         }
 210
 211         // Prepare the paragraphs and insets for insertion.
 212         // A couple of insets store buffer references so need updating.
 213         insertion.swap(in.paragraphs());
 214
 215         ParIterator fpit = par_iterator_begin(in);
 216         ParIterator fend = par_iterator_end(in);
 217
 218         for (; fpit != fend; ++fpit) {
 219                 InsetList::const_iterator lit = fpit->insetList().begin();
 220                 InsetList::const_iterator eit = fpit->insetList().end();
 221
 222                 for (; lit != eit; ++lit) {
 223                         switch (lit->inset->lyxCode()) {
 224                         case TABULAR_CODE: {
 225                                 InsetTabular * it = static_cast<InsetTabular*>(lit->inset);
 226                                 it->buffer(&buffer);
 227                                 break;
 228                         }
 229
 230                         default:
 231                                 break; // nothing
 232                         }
 233                 }
 234         }
 235         insertion.swap(in.paragraphs());
 236
 237         // Split the paragraph for inserting the buf if necessary.
 238         if (!empty)
 239                 breakParagraphConservative(buffer.params(), pars, pit, pos);
 240
 241         // Paste it!
 242         if (empty) {
 243                 pars.insert(boost::next(pars.begin(), pit),
 244                             insertion.begin(),
 245                             insertion.end());
 246
 247                 // merge the empty par with the last par of the insertion
 248                 mergeParagraph(buffer.params(), pars,
 249                                pit + insertion.size() - 1);
 250         } else {
 251                 pars.insert(boost::next(pars.begin(), pit + 1),
 252                             insertion.begin(),
 253                             insertion.end());
 254
 255                 // merge the first par of the insertion with the current par
 256                 mergeParagraph(buffer.params(), pars, pit);
 257         }
 258
 259         pit_type last_paste = pit + insertion.size() - 1;
 260
 261         // Store the new cursor position.
 262         pit = last_paste;
 263         pos = pars[last_paste].size();
 264
 265         // Join (conditionally) last pasted paragraph with next one, i.e.,
 266         // the tail of the spliced document paragraph
 267         if (!empty && last_paste + 1 != pit_type(pars.size())) {
 268                 if (pars[last_paste + 1].hasSameLayout(pars[last_paste])) {
 269                         mergeParagraph(buffer.params(), pars, last_paste);
 270                 } else if (pars[last_paste + 1].empty()) {
 271                         pars[last_paste + 1].makeSameLayout(pars[last_paste]);
 272                         mergeParagraph(buffer.params(), pars, last_paste);
 273                 } else if (pars[last_paste].empty()) {
 274                         pars[last_paste].makeSameLayout(pars[last_paste + 1]);
 275                         mergeParagraph(buffer.params(), pars, last_paste);
 276                 } else {
 277                         pars[last_paste + 1].stripLeadingSpaces(buffer.params().trackChanges);
 278                         ++last_paste;
 279                 }
 280         }
 281
 282         return make_pair(PitPosPair(pit, pos), last_paste + 1);
 283 }
 284
 285
 286 PitPosPair eraseSelectionHelper(BufferParams const & params,
 287         ParagraphList & pars,
 288         pit_type startpit, pit_type endpit,
 289         int startpos, int endpos)
 290 {
 291         // Start of selection is really invalid.
 292         if (startpit == pit_type(pars.size()) ||
 293             (startpos > pars[startpit].size()))
 294                 return PitPosPair(endpit, endpos);
 295
 296         // Start and end is inside same paragraph
 297         if (endpit == pit_type(pars.size()) || startpit == endpit) {
 298                 endpos -= pars[startpit].eraseChars(startpos, endpos, params.trackChanges);
 299                 return PitPosPair(endpit, endpos);
 300         }
 301
 302         for (pit_type pit = startpit; pit != endpit + 1;) {
 303                 pos_type const left  = (pit == startpit ? startpos : 0);
 304                 pos_type right = (pit == endpit ? endpos : pars[pit].size() + 1);
 305                 bool const merge = pars[pit].isMergedOnEndOfParDeletion(params.trackChanges);
 306
 307                 // Logically erase only, including the end-of-paragraph character
 308                 pars[pit].eraseChars(left, right, params.trackChanges);
 309
 310                 // Separate handling of paragraph break:
 311                 if (merge && pit != endpit &&
 312                     (pit + 1 != endpit || pars[pit].hasSameLayout(pars[endpit]))) {
 313                         if (pit + 1 == endpit)
 314                                 endpos += pars[pit].size();
 315                         mergeParagraph(params, pars, pit);
 316                         --endpit;
 317                 } else
 318                         ++pit;
 319         }
 320
 321         // Ensure legal cursor pos:
 322         endpit = startpit;
 323         endpos = startpos;
 324         return PitPosPair(endpit, endpos);
 325 }
 326
 327
 328 void putClipboard(ParagraphList const & paragraphs, TextClassPtr textclass,
 329                   docstring const & plaintext)
 330 {
 331         // For some strange reason gcc 3.2 and 3.3 do not accept
 332         // Buffer buffer(string(), false);
 333         Buffer buffer("", false);
 334         buffer.setUnnamed(true);
 335         buffer.paragraphs() = paragraphs;
 336         buffer.params().setTextClass(textclass);
 337         ostringstream lyx;
 338         if (buffer.write(lyx))
 339                 theClipboard().put(lyx.str(), plaintext);
 340         else
 341                 theClipboard().put(string(), plaintext);
 342 }
 343
 344
 345 void copySelectionHelper(Buffer const & buf, ParagraphList & pars,
 346         pit_type startpit, pit_type endpit,
 347         int start, int end, TextClassPtr tc, CutStack & cutstack)
 348 {
 349         BOOST_ASSERT(0 <= start && start <= pars[startpit].size());
 350         BOOST_ASSERT(0 <= end && end <= pars[endpit].size());
 351         BOOST_ASSERT(startpit != endpit || start <= end);
 352
 353         // Clone the paragraphs within the selection.
 354         ParagraphList copy_pars(boost::next(pars.begin(), startpit),
 355                                 boost::next(pars.begin(), endpit + 1));
 356
 357         // Remove the end of the last paragraph; afterwards, remove the
 358         // beginning of the first paragraph. Keep this order - there may only
 359         // be one paragraph!  Do not track deletions here; this is an internal
 360         // action not visible to the user
 361
 362         Paragraph & back = copy_pars.back();
 363         back.eraseChars(end, back.size(), false);
 364         Paragraph & front = copy_pars.front();
 365         front.eraseChars(0, start, false);
 366
 367         ParagraphList::iterator it = copy_pars.begin();
 368         ParagraphList::iterator it_end = copy_pars.end();
 369
 370         for (; it != it_end; it++) {
 371                 // ERT paragraphs have the Language latex_language.
 372                 // This is invalid outside of ERT, so we need to change it
 373                 // to the buffer language.
 374                 if (it->ownerCode() == ERT_CODE || it->ownerCode() == LISTINGS_CODE) {
 375                         it->changeLanguage(buf.params(), latex_language, buf.language());
 376                 }
 377                 it->setInsetOwner(0);
 378         }
 379
 380         // do not copy text (also nested in insets) which is marked as deleted
 381         acceptChanges(copy_pars, buf.params());
 382
 383         cutstack.push(make_pair(copy_pars, tc));
 384 }
 385
 386 } // namespace anon
 387
 388
 389
 390
 391 namespace cap {
 392
 393 docstring grabAndEraseSelection(Cursor & cur)
 394 {
 395         if (!cur.selection())
 396                 return docstring();
 397         docstring res = grabSelection(cur);
 398         eraseSelection(cur);
 399         return res;
 400 }
 401
 402
 403 void switchBetweenClasses(TextClassPtr const & c1,
 404         TextClassPtr const & c2, InsetText & in, ErrorList & errorlist)
 405 {
 406         errorlist.clear();
 407
 408         BOOST_ASSERT(!in.paragraphs().empty());
 409         if (c1 == c2)
 410                 return;
 411
 412         TextClass const & tclass1 = *c1;
 413         TextClass const & tclass2 = *c2;
 414
 415         // layouts
 416         ParIterator end = par_iterator_end(in);
 417         for (ParIterator it = par_iterator_begin(in); it != end; ++it) {
 418                 docstring const name = it->layout()->name();
 419                 bool hasLayout = tclass2.hasLayout(name);
 420
 421                 if (hasLayout)
 422                         it->layout(tclass2[name]);
 423                 else
 424                         it->layout(tclass2.defaultLayout());
 425
 426                 if (!hasLayout && name != tclass1.defaultLayoutName()) {
 427                         docstring const s = bformat(
 428                                                  _("Layout had to be changed from\n%1$s to %2$s\n"
 429                                                 "because of class conversion from\n%3$s to %4$s"),
 430                          name, it->layout()->name(),
 431                          from_utf8(tclass1.name()), from_utf8(tclass2.name()));
 432                         // To warn the user that something had to be done.
 433                         errorlist.push_back(ErrorItem(_("Changed Layout"), s,
 434                                                       it->id(), 0,
 435                                                       it->size()));
 436                 }
 437         }
 438
 439         // character styles
 440         InsetIterator const i_end = inset_iterator_end(in);
 441         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 442                 InsetCollapsable * inset = it->asInsetCollapsable();
 443                 if (!inset)
 444                         continue;
 445                 if (inset->lyxCode() != FLEX_CODE)
 446                         // FIXME: Should we verify all InsetCollapsable?
 447                         continue;
 448                 inset->setLayout(c2);
 449                 if (inset->getLayout().labelstring != from_utf8("UNDEFINED"))
 450                         continue;
 451                 // The flex inset is undefined in tclass2
 452                 docstring const s = bformat(_(
 453                         "Flex inset %1$s is "
 454                         "undefined because of class "
 455                         "conversion from\n%2$s to %3$s"),
 456                         inset->name(), from_utf8(tclass1.name()),
 457                         from_utf8(tclass2.name()));
 458                 // To warn the user that something had to be done.
 459                 errorlist.push_back(ErrorItem(
 460                                 _("Undefined flex inset"),
 461                                 s, it.paragraph().id(), it.pos(), it.pos() + 1));
 462         }
 463 }
 464
 465
 466 vector<docstring> const availableSelections(Buffer const & buffer)
 467 {
 468         vector<docstring> selList;
 469
 470         CutStack::const_iterator cit = theCuts.begin();
 471         CutStack::const_iterator end = theCuts.end();
 472         for (; cit != end; ++cit) {
 473                 // we do not use cit-> here because gcc 2.9x does not
 474                 // like it (JMarc)
 475                 ParagraphList const & pars = (*cit).first;
 476                 docstring asciiSel;
 477                 ParagraphList::const_iterator pit = pars.begin();
 478                 ParagraphList::const_iterator pend = pars.end();
 479                 for (; pit != pend; ++pit) {
 480                         asciiSel += pit->asString(buffer, false);
 481                         if (asciiSel.size() > 25) {
 482                                 asciiSel.replace(22, docstring::npos,
 483                                                  from_ascii("..."));
 484                                 break;
 485                         }
 486                 }
 487
 488                 selList.push_back(asciiSel);
 489         }
 490
 491         return selList;
 492 }
 493
 494
 495 size_type numberOfSelections()
 496 {
 497         return theCuts.size();
 498 }
 499
 500
 501 void cutSelection(Cursor & cur, bool doclear, bool realcut)
 502 {
 503         // This doesn't make sense, if there is no selection
 504         if (!cur.selection())
 505                 return;
 506
 507         // OK, we have a selection. This is always between cur.selBegin()
 508         // and cur.selEnd()
 509
 510         if (cur.inTexted()) {
 511                 Text * text = cur.text();
 512                 BOOST_ASSERT(text);
 513
 514                 saveSelection(cur);
 515
 516                 // make sure that the depth behind the selection are restored, too
 517                 cur.recordUndoSelection();
 518                 pit_type begpit = cur.selBegin().pit();
 519                 pit_type endpit = cur.selEnd().pit();
 520
 521                 int endpos = cur.selEnd().pos();
 522
 523                 BufferParams const & bp = cur.buffer().params();
 524                 if (realcut) {
 525                         copySelectionHelper(cur.buffer(),
 526                                 text->paragraphs(),
 527                                 begpit, endpit,
 528                                 cur.selBegin().pos(), endpos,
 529                                 bp.getTextClassPtr(), theCuts);
 530                         // Stuff what we got on the clipboard.
 531                         // Even if there is no selection.
 532                         putClipboard(theCuts[0].first, theCuts[0].second,
 533                                 cur.selectionAsString(true));
 534                 }
 535
 536                 boost::tie(endpit, endpos) =
 537                         eraseSelectionHelper(bp,
 538                                 text->paragraphs(),
 539                                 begpit, endpit,
 540                                 cur.selBegin().pos(), endpos);
 541
 542                 // cutSelection can invalidate the cursor so we need to set
 543                 // it anew. (Lgb)
 544                 // we prefer the end for when tracking changes
 545                 cur.pos() = endpos;
 546                 cur.pit() = endpit;
 547
 548                 // sometimes necessary
 549                 if (doclear
 550                         && text->paragraphs()[begpit].stripLeadingSpaces(bp.trackChanges))
 551                         cur.fixIfBroken();
 552
 553                 // need a valid cursor. (Lgb)
 554                 cur.clearSelection();
 555                 updateLabels(cur.buffer());
 556
 557                 // tell tabular that a recent copy happened
 558                 dirtyTabularStack(false);
 559         }
 560
 561         if (cur.inMathed()) {
 562                 if (cur.selBegin().idx() != cur.selEnd().idx()) {
 563                         // The current selection spans more than one cell.
 564                         // Record all cells
 565                         cur.recordUndoInset();
 566                 } else {
 567                         // Record only the current cell to avoid a jumping
 568                         // cursor after undo
 569                         cur.recordUndo();
 570                 }
 571                 if (realcut)
 572                         copySelection(cur);
 573                 eraseSelection(cur);
 574         }
 575 }
 576
 577
 578 void copySelection(Cursor & cur)
 579 {
 580         copySelection(cur, cur.selectionAsString(true));
 581 }
 582
 583
 584 namespace {
 585
 586 void copySelectionToStack(Cursor & cur, CutStack & cutstack)
 587 {
 588         // this doesn't make sense, if there is no selection
 589         if (!cur.selection())
 590                 return;
 591
 592         // copySelection can not yet handle the case of cross idx selection
 593         if (cur.selBegin().idx() != cur.selEnd().idx())
 594                 return;
 595
 596         if (cur.inTexted()) {
 597                 Text * text = cur.text();
 598                 BOOST_ASSERT(text);
 599                 // ok we have a selection. This is always between cur.selBegin()
 600                 // and sel_end cursor
 601
 602                 // copy behind a space if there is one
 603                 ParagraphList & pars = text->paragraphs();
 604                 pos_type pos = cur.selBegin().pos();
 605                 pit_type par = cur.selBegin().pit();
 606                 while (pos < pars[par].size() &&
 607                        pars[par].isLineSeparator(pos) &&
 608                        (par != cur.selEnd().pit() || pos < cur.selEnd().pos()))
 609                         ++pos;
 610
 611                 copySelectionHelper(cur.buffer(), pars, par, cur.selEnd().pit(),
 612                         pos, cur.selEnd().pos(),
 613                         cur.buffer().params().getTextClassPtr(), cutstack);
 614                 dirtyTabularStack(false);
 615         }
 616
 617         if (cur.inMathed()) {
 618                 //lyxerr << "copySelection in mathed" << endl;
 619                 ParagraphList pars;
 620                 Paragraph par;
 621                 BufferParams const & bp = cur.buffer().params();
 622                 par.layout(bp.getTextClass().defaultLayout());
 623                 par.insert(0, grabSelection(cur), Font(), Change(Change::UNCHANGED));
 624                 pars.push_back(par);
 625                 cutstack.push(make_pair(pars, bp.getTextClassPtr()));
 626         }
 627 }
 628
 629 }
 630
 631
 632 void copySelectionToStack()
 633 {
 634         if (!selectionBuffer.empty())
 635                 theCuts.push(selectionBuffer[0]);
 636 }
 637
 638
 639 void copySelection(Cursor & cur, docstring const & plaintext)
 640 {
 641         // In tablemode, because copy and paste actually use special table stack
 642         // we do not attempt to get selected paragraphs under cursor. Instead, a
 643         // paragraph with the plain text version is generated so that table cells
 644         // can be pasted as pure text somewhere else.
 645         if (cur.selBegin().idx() != cur.selEnd().idx()) {
 646                 ParagraphList pars;
 647                 Paragraph par;
 648                 BufferParams const & bp = cur.buffer().params();
 649                 par.layout(bp.getTextClass().defaultLayout());
 650                 par.insert(0, plaintext, Font(), Change(Change::UNCHANGED));
 651                 pars.push_back(par);
 652                 theCuts.push(make_pair(pars, bp.getTextClassPtr()));
 653         } else {
 654                 copySelectionToStack(cur, theCuts);
 655         }
 656
 657         // stuff the selection onto the X clipboard, from an explicit copy request
 658         putClipboard(theCuts[0].first, theCuts[0].second, plaintext);
 659 }
 660
 661
 662 void saveSelection(Cursor & cur)
 663 {
 664         // This function is called, not when a selection is formed, but when
 665         // a selection is cleared. Therefore, multiple keyboard selection
 666         // will not repeatively trigger this function (bug 3877).
 667         if (cur.selection()
 668             && cur.selBegin() == cur.bv().cursor().selBegin()
 669             && cur.selEnd() == cur.bv().cursor().selEnd()) {
 670                 LYXERR(Debug::ACTION, "'" << cur.selectionAsString(true) << "'");
 671                 copySelectionToStack(cur, selectionBuffer);
 672         }
 673 }
 674
 675
 676 bool selection()
 677 {
 678         return !selectionBuffer.empty();
 679 }
 680
 681
 682 void clearSelection()
 683 {
 684         selectionBuffer.clear();
 685 }
 686
 687
 688 void clearCutStack()
 689 {
 690         theCuts.clear();
 691 }
 692
 693
 694 docstring getSelection(Buffer const & buf, size_t sel_index)
 695 {
 696         return sel_index < theCuts.size()
 697                 ? theCuts[sel_index].first.back().asString(buf, false)
 698                 : docstring();
 699 }
 700
 701
 702 void pasteParagraphList(Cursor & cur, ParagraphList const & parlist,
 703                         TextClassPtr textclass, ErrorList & errorList)
 704 {
 705         if (cur.inTexted()) {
 706                 Text * text = cur.text();
 707                 BOOST_ASSERT(text);
 708
 709                 pit_type endpit;
 710                 PitPosPair ppp;
 711
 712                 boost::tie(ppp, endpit) =
 713                         pasteSelectionHelper(cur, parlist,
 714                                              textclass, errorList);
 715                 updateLabels(cur.buffer());
 716                 cur.clearSelection();
 717                 text->setCursor(cur, ppp.first, ppp.second);
 718         }
 719
 720         // mathed is handled in InsetMathNest/InsetMathGrid
 721         BOOST_ASSERT(!cur.inMathed());
 722 }
 723
 724
 725 void pasteFromStack(Cursor & cur, ErrorList & errorList, size_t sel_index)
 726 {
 727         // this does not make sense, if there is nothing to paste
 728         if (!checkPastePossible(sel_index))
 729                 return;
 730
 731         cur.recordUndo();
 732         pasteParagraphList(cur, theCuts[sel_index].first,
 733                            theCuts[sel_index].second, errorList);
 734         cur.setSelection();
 735 }
 736
 737
 738 void pasteClipboardText(Cursor & cur, ErrorList & errorList, bool asParagraphs)
 739 {
 740         // Use internal clipboard if it is the most recent one
 741         if (theClipboard().isInternal()) {
 742                 pasteFromStack(cur, errorList, 0);
 743                 return;
 744         }
 745
 746         // First try LyX format
 747         if (theClipboard().hasLyXContents()) {
 748                 string lyx = theClipboard().getAsLyX();
 749                 if (!lyx.empty()) {
 750                         // For some strange reason gcc 3.2 and 3.3 do not accept
 751                         // Buffer buffer(string(), false);
 752                         Buffer buffer("", false);
 753                         buffer.setUnnamed(true);
 754                         if (buffer.readString(lyx)) {
 755                                 cur.recordUndo();
 756                                 pasteParagraphList(cur, buffer.paragraphs(),
 757                                         buffer.params().getTextClassPtr(), errorList);
 758                                 cur.setSelection();
 759                                 return;
 760                         }
 761                 }
 762         }
 763
 764         // Then try plain text
 765         docstring const text = theClipboard().getAsText();
 766         if (text.empty())
 767                 return;
 768         cur.recordUndo();
 769         if (asParagraphs)
 770                 cur.text()->insertStringAsParagraphs(cur, text);
 771         else
 772                 cur.text()->insertStringAsLines(cur, text);
 773 }
 774
 775
 776 void pasteClipboardGraphics(Cursor & cur, ErrorList & errorList,
 777                             Clipboard::GraphicsType preferedType)
 778 {
 779         BOOST_ASSERT(theClipboard().hasGraphicsContents(preferedType));
 780
 781         // get picture from clipboard
 782         FileName filename = theClipboard().getAsGraphics(cur, preferedType);
 783         if (filename.empty())
 784                 return;
 785
 786         // create inset for graphic
 787         InsetGraphics * inset = new InsetGraphics;
 788         InsetGraphicsParams params;
 789         params.filename = EmbeddedFile(filename.absFilename(), cur.buffer().filePath());
 790         inset->setParams(params);
 791         cur.recordUndo();
 792         cur.insert(inset);
 793 }
 794
 795
 796 void pasteSelection(Cursor & cur, ErrorList & errorList)
 797 {
 798         if (selectionBuffer.empty())
 799                 return;
 800         cur.recordUndo();
 801         pasteParagraphList(cur, selectionBuffer[0].first,
 802                            selectionBuffer[0].second, errorList);
 803 }
 804
 805
 806 void replaceSelectionWithString(Cursor & cur, docstring const & str, bool backwards)
 807 {
 808         cur.recordUndo();
 809         DocIterator selbeg = cur.selectionBegin();
 810
 811         // Get font setting before we cut
 812         Font const font =
 813                 selbeg.paragraph().getFontSettings(cur.buffer().params(), selbeg.pos());
 814
 815         // Insert the new string
 816         pos_type pos = cur.selEnd().pos();
 817         Paragraph & par = cur.selEnd().paragraph();
 818         docstring::const_iterator cit = str.begin();
 819         docstring::const_iterator end = str.end();
 820         for (; cit != end; ++cit, ++pos)
 821                 par.insertChar(pos, *cit, font, cur.buffer().params().trackChanges);
 822
 823         // Cut the selection
 824         cutSelection(cur, true, false);
 825
 826         // select the replacement
 827         if (backwards) {
 828                 selbeg.pos() += str.length();
 829                 cur.setSelection(selbeg, -int(str.length()));
 830         } else
 831                 cur.setSelection(selbeg, str.length());
 832 }
 833
 834
 835 void replaceSelection(Cursor & cur)
 836 {
 837         if (cur.selection())
 838                 cutSelection(cur, true, false);
 839 }
 840
 841
 842 void eraseSelection(Cursor & cur)
 843 {
 844         //lyxerr << "cap::eraseSelection begin: " << cur << endl;
 845         CursorSlice const & i1 = cur.selBegin();
 846         CursorSlice const & i2 = cur.selEnd();
 847         if (i1.inset().asInsetMath()) {
 848                 saveSelection(cur);
 849                 cur.top() = i1;
 850                 if (i1.idx() == i2.idx()) {
 851                         i1.cell().erase(i1.pos(), i2.pos());
 852                         // We may have deleted i1.cell(cur.pos()).
 853                         // Make sure that pos is valid.
 854                         if (cur.pos() > cur.lastpos())
 855                                 cur.pos() = cur.lastpos();
 856                 } else {
 857                         InsetMath * p = i1.asInsetMath();
 858                         Inset::row_type r1, r2;
 859                         Inset::col_type c1, c2;
 860                         region(i1, i2, r1, r2, c1, c2);
 861                         for (Inset::row_type row = r1; row <= r2; ++row)
 862                                 for (Inset::col_type col = c1; col <= c2; ++col)
 863                                         p->cell(p->index(row, col)).clear();
 864                         // We've deleted the whole cell. Only pos 0 is valid.
 865                         cur.pos() = 0;
 866                 }
 867                 // need a valid cursor. (Lgb)
 868                 cur.clearSelection();
 869         } else {
 870                 lyxerr << "can't erase this selection 1" << endl;
 871         }
 872         //lyxerr << "cap::eraseSelection end: " << cur << endl;
 873 }
 874
 875
 876 void selDel(Cursor & cur)
 877 {
 878         //lyxerr << "cap::selDel" << endl;
 879         if (cur.selection())
 880                 eraseSelection(cur);
 881 }
 882
 883
 884 void selClearOrDel(Cursor & cur)
 885 {
 886         //lyxerr << "cap::selClearOrDel" << endl;
 887         if (lyxrc.auto_region_delete)
 888                 selDel(cur);
 889         else
 890                 cur.selection() = false;
 891 }
 892
 893
 894 docstring grabSelection(Cursor const & cur)
 895 {
 896         if (!cur.selection())
 897                 return docstring();
 898
 899         // FIXME: What is wrong with the following?
 900 #if 0
 901         ostringstream os;
 902         for (DocIterator dit = cur.selectionBegin();
 903              dit != cur.selectionEnd(); dit.forwardPos())
 904                 os << asString(dit.cell());
 905         return os.str();
 906 #endif
 907
 908         CursorSlice i1 = cur.selBegin();
 909         CursorSlice i2 = cur.selEnd();
 910
 911         if (i1.idx() == i2.idx()) {
 912                 if (i1.inset().asInsetMath()) {
 913                         MathData::const_iterator it = i1.cell().begin();
 914                         return asString(MathData(it + i1.pos(), it + i2.pos()));
 915                 } else {
 916                         return from_ascii("unknown selection 1");
 917                 }
 918         }
 919
 920         Inset::row_type r1, r2;
 921         Inset::col_type c1, c2;
 922         region(i1, i2, r1, r2, c1, c2);
 923
 924         docstring data;
 925         if (i1.inset().asInsetMath()) {
 926                 for (Inset::row_type row = r1; row <= r2; ++row) {
 927                         if (row > r1)
 928                                 data += "\\\\";
 929                         for (Inset::col_type col = c1; col <= c2; ++col) {
 930                                 if (col > c1)
 931                                         data += '&';
 932                                 data += asString(i1.asInsetMath()->
 933                                         cell(i1.asInsetMath()->index(row, col)));
 934                         }
 935                 }
 936         } else {
 937                 data = from_ascii("unknown selection 2");
 938         }
 939         return data;
 940 }
 941
 942
 943 void dirtyTabularStack(bool b)
 944 {
 945         dirty_tabular_stack_ = b;
 946 }
 947
 948
 949 bool tabularStackDirty()
 950 {
 951         return dirty_tabular_stack_;
 952 }
 953
 954
 955 } // namespace cap
 956
 957 } // namespace lyx