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/InsetGraphics.h"
  41 #include "insets/InsetGraphicsParams.h"
  42 #include "insets/InsetTabular.h"
  43
  44 #include "mathed/MathData.h"
  45 #include "mathed/InsetMath.h"
  46 #include "mathed/MathSupport.h"
  47
  48 #include "support/debug.h"
  49 #include "support/docstream.h"
  50 #include "support/gettext.h"
  51 #include "support/limited_stack.h"
  52 #include "support/lstrings.h"
  53
  54 #include "frontends/Clipboard.h"
  55 #include "frontends/Selection.h"
  56
  57 #include <boost/tuple/tuple.hpp>
  58 #include <boost/next_prior.hpp>
  59
  60 #include <string>
  61
  62 using namespace std;
  63 using namespace lyx::support;
  64 using lyx::frontend::Clipboard;
  65
  66 namespace lyx {
  67
  68 namespace {
  69
  70 typedef pair<pit_type, int> PitPosPair;
  71
  72 typedef limited_stack<pair<ParagraphList, DocumentClass const *> > CutStack;
  73
  74 CutStack theCuts(10);
  75 // persistent selection, cleared until the next selection
  76 CutStack selectionBuffer(1);
  77
  78 // store whether the tabular stack is newer than the normal copy stack
  79 // FIXME: this is a workaround for bug 1919. Should be removed for 1.5,
  80 // when we (hopefully) have a one-for-all paste mechanism.
  81 bool dirty_tabular_stack_ = false;
  82
  83
  84 void region(CursorSlice const & i1, CursorSlice const & i2,
  85         Inset::row_type & r1, Inset::row_type & r2,
  86         Inset::col_type & c1, Inset::col_type & c2)
  87 {
  88         Inset & p = i1.inset();
  89         c1 = p.col(i1.idx());
  90         c2 = p.col(i2.idx());
  91         if (c1 > c2)
  92                 swap(c1, c2);
  93         r1 = p.row(i1.idx());
  94         r2 = p.row(i2.idx());
  95         if (r1 > r2)
  96                 swap(r1, r2);
  97 }
  98
  99
 100 bool checkPastePossible(int index)
 101 {
 102         return size_t(index) < theCuts.size() && !theCuts[index].first.empty();
 103 }
 104
 105
 106 pair<PitPosPair, pit_type>
 107 pasteSelectionHelper(Cursor & cur, ParagraphList const & parlist,
 108                      DocumentClass const * const docclass, ErrorList & errorlist)
 109 {
 110         Buffer const & buffer = cur.buffer();
 111         pit_type pit = cur.pit();
 112         pos_type pos = cur.pos();
 113         ParagraphList & pars = cur.text()->paragraphs();
 114
 115         if (parlist.empty())
 116                 return make_pair(PitPosPair(pit, pos), pit);
 117
 118         BOOST_ASSERT (pos <= pars[pit].size());
 119
 120         // Make a copy of the CaP paragraphs.
 121         ParagraphList insertion = parlist;
 122         DocumentClass const * const tc = buffer.params().documentClassPtr();
 123
 124         // Now remove all out of the pars which is NOT allowed in the
 125         // new environment and set also another font if that is required.
 126
 127         // Convert newline to paragraph break in ERT inset.
 128         // This should not be here!
 129         Inset * inset = pars[pit].inInset();
 130         if (inset && (inset->lyxCode() == ERT_CODE ||
 131                         inset->lyxCode() == LISTINGS_CODE)) {
 132                 for (size_t i = 0; i != insertion.size(); ++i) {
 133                         for (pos_type j = 0; j != insertion[i].size(); ++j) {
 134                                 if (insertion[i].isNewline(j)) {
 135                                         // do not track deletion of newline
 136                                         insertion[i].eraseChar(j, false);
 137                                         breakParagraphConservative(
 138                                                         buffer.params(),
 139                                                         insertion, i, j);
 140                                 }
 141                         }
 142                 }
 143         }
 144
 145         // set the paragraphs to empty layout if necessary
 146         // note that we are doing this if the empty layout is
 147         // supposed to be the default, not just if it is forced
 148         if (cur.inset().useEmptyLayout()) {
 149                 LayoutPtr const layout =
 150                         buffer.params().documentClass().emptyLayout();
 151                 ParagraphList::iterator const end = insertion.end();
 152                 for (ParagraphList::iterator par = insertion.begin();
 153                                 par != end; ++par)
 154                         par->setLayout(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(docclass, 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                         // do not track deletion of invalid insets
 195                         if (Inset * inset = tmpbuf->getInset(i))
 196                                 if (!pars[pit].insetAllowed(inset->lyxCode()))
 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 it = fpit->insetList().begin();
 220                 InsetList::const_iterator et = fpit->insetList().end();
 221                 for (; it != et; ++it)
 222                                 it->inset->setBuffer(const_cast<Buffer &>(buffer));
 223         }
 224         insertion.swap(in.paragraphs());
 225
 226         // Split the paragraph for inserting the buf if necessary.
 227         if (!empty)
 228                 breakParagraphConservative(buffer.params(), pars, pit, pos);
 229
 230         // Paste it!
 231         if (empty) {
 232                 pars.insert(boost::next(pars.begin(), pit),
 233                             insertion.begin(),
 234                             insertion.end());
 235
 236                 // merge the empty par with the last par of the insertion
 237                 mergeParagraph(buffer.params(), pars,
 238                                pit + insertion.size() - 1);
 239         } else {
 240                 pars.insert(boost::next(pars.begin(), pit + 1),
 241                             insertion.begin(),
 242                             insertion.end());
 243
 244                 // merge the first par of the insertion with the current par
 245                 mergeParagraph(buffer.params(), pars, pit);
 246         }
 247
 248         pit_type last_paste = pit + insertion.size() - 1;
 249
 250         // Store the new cursor position.
 251         pit = last_paste;
 252         pos = pars[last_paste].size();
 253
 254         // Join (conditionally) last pasted paragraph with next one, i.e.,
 255         // the tail of the spliced document paragraph
 256         if (!empty && last_paste + 1 != pit_type(pars.size())) {
 257                 if (pars[last_paste + 1].hasSameLayout(pars[last_paste])) {
 258                         mergeParagraph(buffer.params(), pars, last_paste);
 259                 } else if (pars[last_paste + 1].empty()) {
 260                         pars[last_paste + 1].makeSameLayout(pars[last_paste]);
 261                         mergeParagraph(buffer.params(), pars, last_paste);
 262                 } else if (pars[last_paste].empty()) {
 263                         pars[last_paste].makeSameLayout(pars[last_paste + 1]);
 264                         mergeParagraph(buffer.params(), pars, last_paste);
 265                 } else {
 266                         pars[last_paste + 1].stripLeadingSpaces(buffer.params().trackChanges);
 267                         ++last_paste;
 268                 }
 269         }
 270
 271         return make_pair(PitPosPair(pit, pos), last_paste + 1);
 272 }
 273
 274
 275 PitPosPair eraseSelectionHelper(BufferParams const & params,
 276         ParagraphList & pars,
 277         pit_type startpit, pit_type endpit,
 278         int startpos, int endpos)
 279 {
 280         // Start of selection is really invalid.
 281         if (startpit == pit_type(pars.size()) ||
 282             (startpos > pars[startpit].size()))
 283                 return PitPosPair(endpit, endpos);
 284
 285         // Start and end is inside same paragraph
 286         if (endpit == pit_type(pars.size()) || startpit == endpit) {
 287                 endpos -= pars[startpit].eraseChars(startpos, endpos, params.trackChanges);
 288                 return PitPosPair(endpit, endpos);
 289         }
 290
 291         for (pit_type pit = startpit; pit != endpit + 1;) {
 292                 pos_type const left  = (pit == startpit ? startpos : 0);
 293                 pos_type right = (pit == endpit ? endpos : pars[pit].size() + 1);
 294                 bool const merge = pars[pit].isMergedOnEndOfParDeletion(params.trackChanges);
 295
 296                 // Logically erase only, including the end-of-paragraph character
 297                 pars[pit].eraseChars(left, right, params.trackChanges);
 298
 299                 // Separate handling of paragraph break:
 300                 if (merge && pit != endpit &&
 301                     (pit + 1 != endpit
 302                      || pars[pit].hasSameLayout(pars[endpit])
 303                      || pars[endpit].size() == endpos)) {
 304                         if (pit + 1 == endpit)
 305                                 endpos += pars[pit].size();
 306                         mergeParagraph(params, pars, pit);
 307                         --endpit;
 308                 } else
 309                         ++pit;
 310         }
 311
 312         // Ensure legal cursor pos:
 313         endpit = startpit;
 314         endpos = startpos;
 315         return PitPosPair(endpit, endpos);
 316 }
 317
 318
 319 void putClipboard(ParagraphList const & paragraphs,
 320         DocumentClass const * const docclass, docstring const & plaintext)
 321 {
 322         // For some strange reason gcc 3.2 and 3.3 do not accept
 323         // Buffer buffer(string(), false);
 324         Buffer buffer("", false);
 325         buffer.setUnnamed(true);
 326         buffer.paragraphs() = paragraphs;
 327         buffer.params().setDocumentClass(docclass);
 328         ostringstream lyx;
 329         if (buffer.write(lyx))
 330                 theClipboard().put(lyx.str(), plaintext);
 331         else
 332                 theClipboard().put(string(), plaintext);
 333 }
 334
 335
 336 void copySelectionHelper(Buffer const & buf, ParagraphList & pars,
 337         pit_type startpit, pit_type endpit,
 338         int start, int end, DocumentClass const * const dc, CutStack & cutstack)
 339 {
 340         BOOST_ASSERT(0 <= start && start <= pars[startpit].size());
 341         BOOST_ASSERT(0 <= end && end <= pars[endpit].size());
 342         BOOST_ASSERT(startpit != endpit || start <= end);
 343
 344         // Clone the paragraphs within the selection.
 345         ParagraphList copy_pars(boost::next(pars.begin(), startpit),
 346                                 boost::next(pars.begin(), endpit + 1));
 347
 348         // Remove the end of the last paragraph; afterwards, remove the
 349         // beginning of the first paragraph. Keep this order - there may only
 350         // be one paragraph!  Do not track deletions here; this is an internal
 351         // action not visible to the user
 352
 353         Paragraph & back = copy_pars.back();
 354         back.eraseChars(end, back.size(), false);
 355         Paragraph & front = copy_pars.front();
 356         front.eraseChars(0, start, false);
 357
 358         ParagraphList::iterator it = copy_pars.begin();
 359         ParagraphList::iterator it_end = copy_pars.end();
 360
 361         for (; it != it_end; it++) {
 362                 // ERT paragraphs have the Language latex_language.
 363                 // This is invalid outside of ERT, so we need to change it
 364                 // to the buffer language.
 365                 if (it->ownerCode() == ERT_CODE || it->ownerCode() == LISTINGS_CODE) {
 366                         it->changeLanguage(buf.params(), latex_language, buf.language());
 367                 }
 368                 it->setInsetOwner(0);
 369         }
 370
 371         // do not copy text (also nested in insets) which is marked as deleted
 372         acceptChanges(copy_pars, buf.params());
 373
 374         DocumentClass * d = const_cast<DocumentClass *>(dc);
 375         cutstack.push(make_pair(copy_pars, d));
 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(DocumentClass const * const oldone,
 396                 DocumentClass const * 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         DocumentClass const & oldtc = *oldone;
 405         DocumentClass 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 (in.useEmptyLayout())
 414                         it->setLayout(newtc.emptyLayout());
 415                 else if (hasLayout)
 416                         it->setLayout(newtc[name]);
 417                 else
 418                         it->setLayout(newtc.defaultLayout());
 419
 420                 if (!hasLayout && name != oldtc.defaultLayoutName()) {
 421                         docstring const s = bformat(
 422                                                  _("Layout had to be changed from\n%1$s to %2$s\n"
 423                                                 "because of class conversion from\n%3$s to %4$s"),
 424                          name, it->layout()->name(),
 425                          from_utf8(oldtc.name()), from_utf8(newtc.name()));
 426                         // To warn the user that something had to be done.
 427                         errorlist.push_back(ErrorItem(_("Changed Layout"), s,
 428                                                       it->id(), 0,
 429                                                       it->size()));
 430                 }
 431         }
 432
 433         // character styles
 434         InsetIterator const i_end = inset_iterator_end(in);
 435         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 436                 InsetCollapsable * inset = it->asInsetCollapsable();
 437                 if (!inset)
 438                         continue;
 439                 if (inset->lyxCode() != FLEX_CODE)
 440                         // FIXME: Should we verify all InsetCollapsable?
 441                         continue;
 442                 inset->setLayout(newone);
 443                 if (!inset->undefined())
 444                         continue;
 445                 // The flex inset is undefined in newtc
 446                 docstring const s = bformat(_(
 447                         "Flex inset %1$s is "
 448                         "undefined because of class "
 449                         "conversion from\n%2$s to %3$s"),
 450                         inset->name(), from_utf8(oldtc.name()),
 451                         from_utf8(newtc.name()));
 452                 // To warn the user that something had to be done.
 453                 errorlist.push_back(ErrorItem(
 454                                 _("Undefined flex inset"),
 455                                 s, it.paragraph().id(), it.pos(), it.pos() + 1));
 456         }
 457 }
 458
 459
 460 vector<docstring> availableSelections()
 461 {
 462         vector<docstring> selList;
 463
 464         CutStack::const_iterator cit = theCuts.begin();
 465         CutStack::const_iterator end = theCuts.end();
 466         for (; cit != end; ++cit) {
 467                 // we do not use cit-> here because gcc 2.9x does not
 468                 // like it (JMarc)
 469                 ParagraphList const & pars = (*cit).first;
 470                 docstring asciiSel;
 471                 ParagraphList::const_iterator pit = pars.begin();
 472                 ParagraphList::const_iterator pend = pars.end();
 473                 for (; pit != pend; ++pit) {
 474                         asciiSel += pit->asString(false);
 475                         if (asciiSel.size() > 25) {
 476                                 asciiSel.replace(22, docstring::npos,
 477                                                  from_ascii("..."));
 478                                 break;
 479                         }
 480                 }
 481
 482                 selList.push_back(asciiSel);
 483         }
 484
 485         return selList;
 486 }
 487
 488
 489 size_type numberOfSelections()
 490 {
 491         return theCuts.size();
 492 }
 493
 494
 495 void cutSelection(Cursor & cur, bool doclear, bool realcut)
 496 {
 497         // This doesn't make sense, if there is no selection
 498         if (!cur.selection())
 499                 return;
 500
 501         // OK, we have a selection. This is always between cur.selBegin()
 502         // and cur.selEnd()
 503
 504         if (cur.inTexted()) {
 505                 Text * text = cur.text();
 506                 BOOST_ASSERT(text);
 507
 508                 saveSelection(cur);
 509
 510                 // make sure that the depth behind the selection are restored, too
 511                 cur.recordUndoSelection();
 512                 pit_type begpit = cur.selBegin().pit();
 513                 pit_type endpit = cur.selEnd().pit();
 514
 515                 int endpos = cur.selEnd().pos();
 516
 517                 BufferParams const & bp = cur.buffer().params();
 518                 if (realcut) {
 519                         copySelectionHelper(cur.buffer(),
 520                                 text->paragraphs(),
 521                                 begpit, endpit,
 522                                 cur.selBegin().pos(), endpos,
 523                                 bp.documentClassPtr(), theCuts);
 524                         // Stuff what we got on the clipboard.
 525                         // Even if there is no selection.
 526                         putClipboard(theCuts[0].first, theCuts[0].second,
 527                                 cur.selectionAsString(true));
 528                 }
 529
 530                 boost::tie(endpit, endpos) =
 531                         eraseSelectionHelper(bp,
 532                                 text->paragraphs(),
 533                                 begpit, endpit,
 534                                 cur.selBegin().pos(), endpos);
 535
 536                 // cutSelection can invalidate the cursor so we need to set
 537                 // it anew. (Lgb)
 538                 // we prefer the end for when tracking changes
 539                 cur.pos() = endpos;
 540                 cur.pit() = endpit;
 541
 542                 // sometimes necessary
 543                 if (doclear
 544                         && text->paragraphs()[begpit].stripLeadingSpaces(bp.trackChanges))
 545                         cur.fixIfBroken();
 546
 547                 // need a valid cursor. (Lgb)
 548                 cur.clearSelection();
 549                 updateLabels(cur.buffer());
 550
 551                 // tell tabular that a recent copy happened
 552                 dirtyTabularStack(false);
 553         }
 554
 555         if (cur.inMathed()) {
 556                 if (cur.selBegin().idx() != cur.selEnd().idx()) {
 557                         // The current selection spans more than one cell.
 558                         // Record all cells
 559                         cur.recordUndoInset();
 560                 } else {
 561                         // Record only the current cell to avoid a jumping
 562                         // cursor after undo
 563                         cur.recordUndo();
 564                 }
 565                 if (realcut)
 566                         copySelection(cur);
 567                 eraseSelection(cur);
 568         }
 569 }
 570
 571
 572 void copySelection(Cursor & cur)
 573 {
 574         copySelection(cur, cur.selectionAsString(true));
 575 }
 576
 577
 578 namespace {
 579
 580 void copySelectionToStack(Cursor & cur, CutStack & cutstack)
 581 {
 582         // this doesn't make sense, if there is no selection
 583         if (!cur.selection())
 584                 return;
 585
 586         // copySelection can not yet handle the case of cross idx selection
 587         if (cur.selBegin().idx() != cur.selEnd().idx())
 588                 return;
 589
 590         if (cur.inTexted()) {
 591                 Text * text = cur.text();
 592                 BOOST_ASSERT(text);
 593                 // ok we have a selection. This is always between cur.selBegin()
 594                 // and sel_end cursor
 595
 596                 // copy behind a space if there is one
 597                 ParagraphList & pars = text->paragraphs();
 598                 pos_type pos = cur.selBegin().pos();
 599                 pit_type par = cur.selBegin().pit();
 600                 while (pos < pars[par].size() &&
 601                        pars[par].isLineSeparator(pos) &&
 602                        (par != cur.selEnd().pit() || pos < cur.selEnd().pos()))
 603                         ++pos;
 604
 605                 copySelectionHelper(cur.buffer(), pars, par, cur.selEnd().pit(),
 606                         pos, cur.selEnd().pos(),
 607                         cur.buffer().params().documentClassPtr(), cutstack);
 608                 dirtyTabularStack(false);
 609         }
 610
 611         if (cur.inMathed()) {
 612                 //lyxerr << "copySelection in mathed" << endl;
 613                 ParagraphList pars;
 614                 Paragraph par;
 615                 BufferParams const & bp = cur.buffer().params();
 616                 // FIXME This should be the empty layout...right?
 617                 par.setLayout(bp.documentClass().emptyLayout());
 618                 par.insert(0, grabSelection(cur), Font(), Change(Change::UNCHANGED));
 619                 pars.push_back(par);
 620                 cutstack.push(make_pair(pars, bp.documentClassPtr()));
 621         }
 622 }
 623
 624 }
 625
 626
 627 void copySelectionToStack()
 628 {
 629         if (!selectionBuffer.empty())
 630                 theCuts.push(selectionBuffer[0]);
 631 }
 632
 633
 634 void copySelection(Cursor & cur, docstring const & plaintext)
 635 {
 636         // In tablemode, because copy and paste actually use special table stack
 637         // we do not attempt to get selected paragraphs under cursor. Instead, a
 638         // paragraph with the plain text version is generated so that table cells
 639         // can be pasted as pure text somewhere else.
 640         if (cur.selBegin().idx() != cur.selEnd().idx()) {
 641                 ParagraphList pars;
 642                 Paragraph par;
 643                 BufferParams const & bp = cur.buffer().params();
 644                 par.setLayout(bp.documentClass().emptyLayout());
 645                 par.insert(0, plaintext, Font(), Change(Change::UNCHANGED));
 646                 pars.push_back(par);
 647                 theCuts.push(make_pair(pars, bp.documentClassPtr()));
 648         } else {
 649                 copySelectionToStack(cur, theCuts);
 650         }
 651
 652         // stuff the selection onto the X clipboard, from an explicit copy request
 653         putClipboard(theCuts[0].first, theCuts[0].second, plaintext);
 654 }
 655
 656
 657 void saveSelection(Cursor & cur)
 658 {
 659         // This function is called, not when a selection is formed, but when
 660         // a selection is cleared. Therefore, multiple keyboard selection
 661         // will not repeatively trigger this function (bug 3877).
 662         if (cur.selection()
 663             && cur.selBegin() == cur.bv().cursor().selBegin()
 664             && cur.selEnd() == cur.bv().cursor().selEnd()) {
 665                 LYXERR(Debug::ACTION, "'" << cur.selectionAsString(true) << "'");
 666                 copySelectionToStack(cur, selectionBuffer);
 667         }
 668 }
 669
 670
 671 bool selection()
 672 {
 673         return !selectionBuffer.empty();
 674 }
 675
 676
 677 void clearSelection()
 678 {
 679         selectionBuffer.clear();
 680 }
 681
 682
 683 void clearCutStack()
 684 {
 685         theCuts.clear();
 686 }
 687
 688
 689 docstring selection(size_t sel_index)
 690 {
 691         return sel_index < theCuts.size()
 692                 ? theCuts[sel_index].first.back().asString(false)
 693                 : docstring();
 694 }
 695
 696
 697 void pasteParagraphList(Cursor & cur, ParagraphList const & parlist,
 698                         DocumentClass const * const docclass, ErrorList & errorList)
 699 {
 700         if (cur.inTexted()) {
 701                 Text * text = cur.text();
 702                 BOOST_ASSERT(text);
 703
 704                 pit_type endpit;
 705                 PitPosPair ppp;
 706
 707                 boost::tie(ppp, endpit) =
 708                         pasteSelectionHelper(cur, parlist, docclass, errorList);
 709                 updateLabels(cur.buffer());
 710                 cur.clearSelection();
 711                 text->setCursor(cur, ppp.first, ppp.second);
 712         }
 713
 714         // mathed is handled in InsetMathNest/InsetMathGrid
 715         BOOST_ASSERT(!cur.inMathed());
 716 }
 717
 718
 719 void pasteFromStack(Cursor & cur, ErrorList & errorList, size_t sel_index)
 720 {
 721         // this does not make sense, if there is nothing to paste
 722         if (!checkPastePossible(sel_index))
 723                 return;
 724
 725         cur.recordUndo();
 726         pasteParagraphList(cur, theCuts[sel_index].first,
 727                            theCuts[sel_index].second, errorList);
 728         cur.setSelection();
 729 }
 730
 731
 732 void pasteClipboardText(Cursor & cur, ErrorList & errorList, bool asParagraphs)
 733 {
 734         // Use internal clipboard if it is the most recent one
 735         if (theClipboard().isInternal()) {
 736                 pasteFromStack(cur, errorList, 0);
 737                 return;
 738         }
 739
 740         // First try LyX format
 741         if (theClipboard().hasLyXContents()) {
 742                 string lyx = theClipboard().getAsLyX();
 743                 if (!lyx.empty()) {
 744                         // For some strange reason gcc 3.2 and 3.3 do not accept
 745                         // Buffer buffer(string(), false);
 746                         Buffer buffer("", false);
 747                         buffer.setUnnamed(true);
 748                         if (buffer.readString(lyx)) {
 749                                 cur.recordUndo();
 750                                 pasteParagraphList(cur, buffer.paragraphs(),
 751                                         buffer.params().documentClassPtr(), errorList);
 752                                 cur.setSelection();
 753                                 return;
 754                         }
 755                 }
 756         }
 757
 758         // Then try plain text
 759         docstring const text = theClipboard().getAsText();
 760         if (text.empty())
 761                 return;
 762         cur.recordUndo();
 763         if (asParagraphs)
 764                 cur.text()->insertStringAsParagraphs(cur, text);
 765         else
 766                 cur.text()->insertStringAsLines(cur, text);
 767 }
 768
 769
 770 void pasteClipboardGraphics(Cursor & cur, ErrorList & /* errorList */,
 771                             Clipboard::GraphicsType preferedType)
 772 {
 773         BOOST_ASSERT(theClipboard().hasGraphicsContents(preferedType));
 774
 775         // get picture from clipboard
 776         FileName filename = theClipboard().getAsGraphics(cur, preferedType);
 777         if (filename.empty())
 778                 return;
 779
 780         // create inset for graphic
 781         InsetGraphics * inset = new InsetGraphics;
 782         InsetGraphicsParams params;
 783         params.filename = EmbeddedFile(filename.absFilename(), cur.buffer().filePath());
 784         inset->setParams(params);
 785         cur.recordUndo();
 786         cur.insert(inset);
 787 }
 788
 789
 790 void pasteSelection(Cursor & cur, ErrorList & errorList)
 791 {
 792         if (selectionBuffer.empty())
 793                 return;
 794         cur.recordUndo();
 795         pasteParagraphList(cur, selectionBuffer[0].first,
 796                            selectionBuffer[0].second, errorList);
 797 }
 798
 799
 800 void replaceSelectionWithString(Cursor & cur, docstring const & str, bool backwards)
 801 {
 802         cur.recordUndo();
 803         DocIterator selbeg = cur.selectionBegin();
 804
 805         // Get font setting before we cut
 806         Font const font =
 807                 selbeg.paragraph().getFontSettings(cur.buffer().params(), selbeg.pos());
 808
 809         // Insert the new string
 810         pos_type pos = cur.selEnd().pos();
 811         Paragraph & par = cur.selEnd().paragraph();
 812         docstring::const_iterator cit = str.begin();
 813         docstring::const_iterator end = str.end();
 814         for (; cit != end; ++cit, ++pos)
 815                 par.insertChar(pos, *cit, font, cur.buffer().params().trackChanges);
 816
 817         // Cut the selection
 818         cutSelection(cur, true, false);
 819
 820         // select the replacement
 821         if (backwards) {
 822                 selbeg.pos() += str.length();
 823                 cur.setSelection(selbeg, -int(str.length()));
 824         } else
 825                 cur.setSelection(selbeg, str.length());
 826 }
 827
 828
 829 void replaceSelection(Cursor & cur)
 830 {
 831         if (cur.selection())
 832                 cutSelection(cur, true, false);
 833 }
 834
 835
 836 void eraseSelection(Cursor & cur)
 837 {
 838         //lyxerr << "cap::eraseSelection begin: " << cur << endl;
 839         CursorSlice const & i1 = cur.selBegin();
 840         CursorSlice const & i2 = cur.selEnd();
 841         if (i1.inset().asInsetMath()) {
 842                 saveSelection(cur);
 843                 cur.top() = i1;
 844                 if (i1.idx() == i2.idx()) {
 845                         i1.cell().erase(i1.pos(), i2.pos());
 846                         // We may have deleted i1.cell(cur.pos()).
 847                         // Make sure that pos is valid.
 848                         if (cur.pos() > cur.lastpos())
 849                                 cur.pos() = cur.lastpos();
 850                 } else {
 851                         InsetMath * p = i1.asInsetMath();
 852                         Inset::row_type r1, r2;
 853                         Inset::col_type c1, c2;
 854                         region(i1, i2, r1, r2, c1, c2);
 855                         for (Inset::row_type row = r1; row <= r2; ++row)
 856                                 for (Inset::col_type col = c1; col <= c2; ++col)
 857                                         p->cell(p->index(row, col)).clear();
 858                         // We've deleted the whole cell. Only pos 0 is valid.
 859                         cur.pos() = 0;
 860                 }
 861                 // need a valid cursor. (Lgb)
 862                 cur.clearSelection();
 863         } else {
 864                 lyxerr << "can't erase this selection 1" << endl;
 865         }
 866         //lyxerr << "cap::eraseSelection end: " << cur << endl;
 867 }
 868
 869
 870 void selDel(Cursor & cur)
 871 {
 872         //lyxerr << "cap::selDel" << endl;
 873         if (cur.selection())
 874                 eraseSelection(cur);
 875 }
 876
 877
 878 void selClearOrDel(Cursor & cur)
 879 {
 880         //lyxerr << "cap::selClearOrDel" << endl;
 881         if (lyxrc.auto_region_delete)
 882                 selDel(cur);
 883         else
 884                 cur.selection() = false;
 885 }
 886
 887
 888 docstring grabSelection(Cursor const & cur)
 889 {
 890         if (!cur.selection())
 891                 return docstring();
 892
 893         // FIXME: What is wrong with the following?
 894 #if 0
 895         ostringstream os;
 896         for (DocIterator dit = cur.selectionBegin();
 897              dit != cur.selectionEnd(); dit.forwardPos())
 898                 os << asString(dit.cell());
 899         return os.str();
 900 #endif
 901
 902         CursorSlice i1 = cur.selBegin();
 903         CursorSlice i2 = cur.selEnd();
 904
 905         if (i1.idx() == i2.idx()) {
 906                 if (i1.inset().asInsetMath()) {
 907                         MathData::const_iterator it = i1.cell().begin();
 908                         return asString(MathData(it + i1.pos(), it + i2.pos()));
 909                 } else {
 910                         return from_ascii("unknown selection 1");
 911                 }
 912         }
 913
 914         Inset::row_type r1, r2;
 915         Inset::col_type c1, c2;
 916         region(i1, i2, r1, r2, c1, c2);
 917
 918         docstring data;
 919         if (i1.inset().asInsetMath()) {
 920                 for (Inset::row_type row = r1; row <= r2; ++row) {
 921                         if (row > r1)
 922                                 data += "\\\\";
 923                         for (Inset::col_type col = c1; col <= c2; ++col) {
 924                                 if (col > c1)
 925                                         data += '&';
 926                                 data += asString(i1.asInsetMath()->
 927                                         cell(i1.asInsetMath()->index(row, col)));
 928                         }
 929                 }
 930         } else {
 931                 data = from_ascii("unknown selection 2");
 932         }
 933         return data;
 934 }
 935
 936
 937 void dirtyTabularStack(bool b)
 938 {
 939         dirty_tabular_stack_ = b;
 940 }
 941
 942
 943 bool tabularStackDirty()
 944 {
 945         return dirty_tabular_stack_;
 946 }
 947
 948
 949 } // namespace cap
 950
 951 } // namespace lyx