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