src/CutAndPaste.C

   1 /*
   2  * \file CutAndPaste.C
   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 "cursor.h"
  22 #include "debug.h"
  23 #include "errorlist.h"
  24 #include "funcrequest.h"
  25 #include "gettext.h"
  26 #include "insetiterator.h"
  27 #include "language.h"
  28 #include "lfuns.h"
  29 #include "lyxfunc.h"
  30 #include "lyxrc.h"
  31 #include "lyxtext.h"
  32 #include "lyxtextclasslist.h"
  33 #include "paragraph.h"
  34 #include "paragraph_funcs.h"
  35 #include "ParagraphParameters.h"
  36 #include "ParagraphList_fwd.h"
  37 #include "pariterator.h"
  38 #include "undo.h"
  39
  40 #include "insets/insetcharstyle.h"
  41 #include "insets/insettabular.h"
  42
  43 #include "mathed/MathData.h"
  44 #include "mathed/InsetMath.h"
  45 #include "mathed/MathSupport.h"
  46
  47 #include "support/lstrings.h"
  48
  49 #include "frontends/Clipboard.h"
  50 #include "frontends/Selection.h"
  51
  52 #include <boost/tuple/tuple.hpp>
  53
  54
  55 namespace lyx {
  56
  57 using support::bformat;
  58 using frontend::Clipboard;
  59
  60 using std::endl;
  61 using std::for_each;
  62 using std::make_pair;
  63 using std::pair;
  64 using std::vector;
  65 using std::string;
  66
  67
  68 namespace {
  69
  70 typedef std::pair<pit_type, int> PitPosPair;
  71
  72 typedef limited_stack<pair<ParagraphList, textclass_type> > CutStack;
  73
  74 CutStack theCuts(10);
  75
  76 // store whether the tabular stack is newer than the normal copy stack
  77 // FIXME: this is a workaround for bug 1919. Should be removed for 1.5,
  78 // when we (hopefully) have a one-for-all paste mechanism.
  79 bool dirty_tabular_stack_ = false;
  80
  81
  82 void region(CursorSlice const & i1, CursorSlice const & i2,
  83         InsetBase::row_type & r1, InsetBase::row_type & r2,
  84         InsetBase::col_type & c1, InsetBase::col_type & c2)
  85 {
  86         InsetBase & p = i1.inset();
  87         c1 = p.col(i1.idx());
  88         c2 = p.col(i2.idx());
  89         if (c1 > c2)
  90                 std::swap(c1, c2);
  91         r1 = p.row(i1.idx());
  92         r2 = p.row(i2.idx());
  93         if (r1 > r2)
  94                 std::swap(r1, r2);
  95 }
  96
  97
  98 bool checkPastePossible(int index)
  99 {
 100         return size_t(index) < theCuts.size() && !theCuts[index].first.empty();
 101 }
 102
 103
 104 pair<PitPosPair, pit_type>
 105 pasteSelectionHelper(LCursor & cur, ParagraphList const & parlist,
 106                      textclass_type textclass, ErrorList & errorlist)
 107 {
 108         Buffer const & buffer = cur.buffer();
 109         pit_type pit = cur.pit();
 110         pos_type pos = cur.pos();
 111         ParagraphList & pars = cur.text()->paragraphs();
 112
 113         if (parlist.empty())
 114                 return make_pair(PitPosPair(pit, pos), pit);
 115
 116         BOOST_ASSERT (pos <= pars[pit].size());
 117
 118         // Make a copy of the CaP paragraphs.
 119         ParagraphList insertion = parlist;
 120         textclass_type const tc = buffer.params().textclass;
 121
 122         // Now remove all out of the pars which is NOT allowed in the
 123         // new environment and set also another font if that is required.
 124
 125         // Convert newline to paragraph break in ERT inset.
 126         // This should not be here!
 127         if (pars[pit].inInset() &&
 128             pars[pit].inInset()->lyxCode() == InsetBase::ERT_CODE) {
 129                 for (ParagraphList::size_type i = 0; i < insertion.size(); ++i) {
 130                         for (pos_type j = 0; j < insertion[i].size(); ++j) {
 131                                 if (insertion[i].isNewline(j)) {
 132                                         // do not track deletion of newline
 133                                         insertion[i].eraseChar(j, false);
 134                                         breakParagraphConservative(
 135                                                         buffer.params(),
 136                                                         insertion, i, j);
 137                                 }
 138                         }
 139                 }
 140         }
 141
 142         // If we are in an inset which returns forceDefaultParagraphs,
 143         // set the paragraphs to default
 144         if (cur.inset().forceDefaultParagraphs(cur.idx())) {
 145                 LyXLayout_ptr const layout =
 146                         buffer.params().getLyXTextClass().defaultLayout();
 147                 ParagraphList::iterator const end = insertion.end();
 148                 for (ParagraphList::iterator par = insertion.begin();
 149                                 par != end; ++par)
 150                         par->layout(layout);
 151         }
 152
 153         // Make sure there is no class difference.
 154         InsetText in;
 155         // This works without copying any paragraph data because we have
 156         // a specialized swap method for ParagraphList. This is important
 157         // since we store pointers to insets at some places and we don't
 158         // want to invalidate them.
 159         insertion.swap(in.paragraphs());
 160         cap::switchBetweenClasses(textclass, tc, in, errorlist);
 161         insertion.swap(in.paragraphs());
 162
 163         ParagraphList::iterator tmpbuf = insertion.begin();
 164         int depth_delta = pars[pit].params().depth() - tmpbuf->params().depth();
 165
 166         depth_type max_depth = pars[pit].getMaxDepthAfter();
 167
 168         for (; tmpbuf != insertion.end(); ++tmpbuf) {
 169                 // If we have a negative jump so that the depth would
 170                 // go below 0 depth then we have to redo the delta to
 171                 // this new max depth level so that subsequent
 172                 // paragraphs are aligned correctly to this paragraph
 173                 // at level 0.
 174                 if (int(tmpbuf->params().depth()) + depth_delta < 0)
 175                         depth_delta = 0;
 176
 177                 // Set the right depth so that we are not too deep or shallow.
 178                 tmpbuf->params().depth(tmpbuf->params().depth() + depth_delta);
 179                 if (tmpbuf->params().depth() > max_depth)
 180                         tmpbuf->params().depth(max_depth);
 181
 182                 // Only set this from the 2nd on as the 2nd depends
 183                 // for maxDepth still on pit.
 184                 if (tmpbuf != insertion.begin())
 185                         max_depth = tmpbuf->getMaxDepthAfter();
 186
 187                 // Set the inset owner of this paragraph.
 188                 tmpbuf->setInsetOwner(pars[pit].inInset());
 189                 for (pos_type i = 0; i < tmpbuf->size(); ++i) {
 190                         if (tmpbuf->getChar(i) == Paragraph::META_INSET &&
 191                             !pars[pit].insetAllowed(tmpbuf->getInset(i)->lyxCode()))
 192                                 // do not track deletion of invalid insets
 193                                 tmpbuf->eraseChar(i--, false);
 194                 }
 195
 196                 tmpbuf->setChange(Change(buffer.params().trackChanges ?
 197                                          Change::INSERTED : Change::UNCHANGED));
 198         }
 199
 200         bool const empty = pars[pit].empty();
 201         if (!empty) {
 202                 // Make the buf exactly the same layout as the cursor
 203                 // paragraph.
 204                 insertion.begin()->makeSameLayout(pars[pit]);
 205         }
 206
 207         // Prepare the paragraphs and insets for insertion.
 208         // A couple of insets store buffer references so need updating.
 209         insertion.swap(in.paragraphs());
 210
 211         ParIterator fpit = par_iterator_begin(in);
 212         ParIterator fend = par_iterator_end(in);
 213
 214         for (; fpit != fend; ++fpit) {
 215                 InsetList::const_iterator lit = fpit->insetlist.begin();
 216                 InsetList::const_iterator eit = fpit->insetlist.end();
 217
 218                 for (; lit != eit; ++lit) {
 219                         switch (lit->inset->lyxCode()) {
 220                         case InsetBase::TABULAR_CODE: {
 221                                 InsetTabular * it = static_cast<InsetTabular*>(lit->inset);
 222                                 it->buffer(&buffer);
 223                                 break;
 224                         }
 225
 226                         default:
 227                                 break; // nothing
 228                         }
 229                 }
 230         }
 231         insertion.swap(in.paragraphs());
 232
 233         // Split the paragraph for inserting the buf if necessary.
 234         if (!empty)
 235                 breakParagraphConservative(buffer.params(), pars, pit, pos);
 236
 237         // Paste it!
 238         if (empty) {
 239                 pars.insert(boost::next(pars.begin(), pit),
 240                             insertion.begin(),
 241                             insertion.end());
 242
 243                 // merge the empty par with the last par of the insertion
 244                 mergeParagraph(buffer.params(), pars,
 245                                pit + insertion.size() - 1);
 246         } else {
 247                 pars.insert(boost::next(pars.begin(), pit + 1),
 248                             insertion.begin(),
 249                             insertion.end());
 250
 251                 // merge the first par of the insertion with the current par
 252                 mergeParagraph(buffer.params(), pars, pit);
 253         }
 254
 255         pit_type last_paste = pit + insertion.size() - 1;
 256
 257         // Store the new cursor position.
 258         pit = last_paste;
 259         pos = pars[last_paste].size();
 260
 261         // Join (conditionally) last pasted paragraph with next one, i.e.,
 262         // the tail of the spliced document paragraph
 263         if (!empty && last_paste + 1 != pit_type(pars.size())) {
 264                 if (pars[last_paste + 1].hasSameLayout(pars[last_paste])) {
 265                         mergeParagraph(buffer.params(), pars, last_paste);
 266                 } else if (pars[last_paste + 1].empty()) {
 267                         pars[last_paste + 1].makeSameLayout(pars[last_paste]);
 268                         mergeParagraph(buffer.params(), pars, last_paste);
 269                 } else if (pars[last_paste].empty()) {
 270                         pars[last_paste].makeSameLayout(pars[last_paste + 1]);
 271                         mergeParagraph(buffer.params(), pars, last_paste);
 272                 } else {
 273                         pars[last_paste + 1].stripLeadingSpaces(buffer.params().trackChanges);
 274                         ++last_paste;
 275                 }
 276         }
 277
 278         return make_pair(PitPosPair(pit, pos), last_paste + 1);
 279 }
 280
 281
 282 PitPosPair eraseSelectionHelper(BufferParams const & params,
 283         ParagraphList & pars,
 284         pit_type startpit, pit_type endpit,
 285         int startpos, int endpos, bool doclear)
 286 {
 287         // Start of selection is really invalid.
 288         if (startpit == pit_type(pars.size()) ||
 289             (startpos > pars[startpit].size()))
 290                 return PitPosPair(endpit, endpos);
 291
 292         // Start and end is inside same paragraph
 293         if (endpit == pit_type(pars.size()) || startpit == endpit) {
 294                 endpos -= pars[startpit].eraseChars(startpos, endpos, params.trackChanges);
 295                 return PitPosPair(endpit, endpos);
 296         }
 297
 298         for (pit_type pit = startpit; pit != endpit + 1;) {
 299                 pos_type const left  = (pit == startpit ? startpos : 0);
 300                 pos_type const right = (pit == endpit ? endpos : pars[pit].size() + 1);
 301
 302                 bool const merge = pars[pit].isMergedOnEndOfParDeletion(params.trackChanges);
 303
 304                 // Logically erase only, including the end-of-paragraph character
 305                 pars[pit].eraseChars(left, right, params.trackChanges);
 306
 307                 // Separate handling of paragraph break:
 308                 if (merge && pit != endpit &&
 309                     (pit + 1 != endpit || pars[pit].hasSameLayout(pars[pit + 1]))) {
 310                         pos_type const thissize = pars[pit].size();
 311                         if (doclear)
 312                                 pars[pit + 1].stripLeadingSpaces(params.trackChanges);
 313                         mergeParagraph(params, pars, pit);
 314                         --endpit;
 315                         if (pit == endpit)
 316                                 endpos += thissize;
 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, textclass_type textclass,
 329                   docstring const & plaintext)
 330 {
 331         Buffer buffer(string(), false);
 332         buffer.setUnnamed(true);
 333         buffer.paragraphs() = paragraphs;
 334         buffer.params().textclass = textclass;
 335         std::ostringstream lyx;
 336         if (buffer.write(lyx))
 337                 theClipboard().put(lyx.str(), plaintext);
 338         else
 339                 theClipboard().put(string(), plaintext);
 340 }
 341
 342
 343 void copySelectionHelper(Buffer const & buf, ParagraphList & pars,
 344         pit_type startpit, pit_type endpit,
 345         int start, int end, textclass_type tc)
 346 {
 347         BOOST_ASSERT(0 <= start && start <= pars[startpit].size());
 348         BOOST_ASSERT(0 <= end && end <= pars[endpit].size());
 349         BOOST_ASSERT(startpit != endpit || start <= end);
 350
 351         // Clone the paragraphs within the selection.
 352         ParagraphList paragraphs(boost::next(pars.begin(), startpit),
 353                                  boost::next(pars.begin(), endpit + 1));
 354
 355         ParagraphList::iterator it = paragraphs.begin();
 356         ParagraphList::iterator it_end = paragraphs.end();
 357
 358         for (; it != it_end; it++) {
 359                 // ERT paragraphs have the Language latex_language.
 360                 // This is invalid outside of ERT, so we need to change it
 361                 // to the buffer language.
 362                 if (it->ownerCode() == InsetBase::ERT_CODE) {
 363                         it->changeLanguage(buf.params(), latex_language,
 364                                            buf.getLanguage());
 365                 }
 366                 it->setInsetOwner(0);
 367         }
 368
 369         // Cut out the end of the last paragraph.
 370         Paragraph & back = paragraphs.back();
 371         // do not track deletion here; it is an internal action not visible to the user
 372         back.eraseChars(end, back.size(), false);
 373
 374         // Cut out the begin of the first paragraph
 375         Paragraph & front = paragraphs.front();
 376         // again, do not track deletion
 377         front.eraseChars(0, start, false);
 378
 379         theCuts.push(make_pair(paragraphs, tc));
 380 }
 381
 382 } // namespace anon
 383
 384
 385
 386
 387 namespace cap {
 388
 389 docstring grabAndEraseSelection(LCursor & cur)
 390 {
 391         if (!cur.selection())
 392                 return docstring();
 393         docstring res = grabSelection(cur);
 394         eraseSelection(cur);
 395         return res;
 396 }
 397
 398
 399 void switchBetweenClasses(textclass_type c1, textclass_type c2,
 400         InsetText & in, ErrorList & errorlist)
 401 {
 402         BOOST_ASSERT(!in.paragraphs().empty());
 403         if (c1 == c2)
 404                 return;
 405
 406         LyXTextClass const & tclass1 = textclasslist[c1];
 407         LyXTextClass const & tclass2 = textclasslist[c2];
 408
 409         // layouts
 410         ParIterator end = par_iterator_end(in);
 411         for (ParIterator it = par_iterator_begin(in); it != end; ++it) {
 412                 string const name = it->layout()->name();
 413                 bool hasLayout = tclass2.hasLayout(name);
 414
 415                 if (hasLayout)
 416                         it->layout(tclass2[name]);
 417                 else
 418                         it->layout(tclass2.defaultLayout());
 419
 420                 if (!hasLayout && name != tclass1.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                          from_utf8(name), from_utf8(it->layout()->name()),
 425                          from_utf8(tclass1.name()), from_utf8(tclass2.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                 if (it->lyxCode() == InsetBase::CHARSTYLE_CODE) {
 437                         InsetCharStyle & inset =
 438                                 static_cast<InsetCharStyle &>(*it);
 439                         string const name = inset.params().type;
 440                         CharStyles::iterator const found_cs =
 441                                 tclass2.charstyle(name);
 442                         if (found_cs == tclass2.charstyles().end()) {
 443                                 // The character style is undefined in tclass2
 444                                 inset.setUndefined();
 445                                 docstring const s = bformat(_(
 446                                         "Character style %1$s is "
 447                                         "undefined because of class "
 448                                         "conversion from\n%2$s to %3$s"),
 449                                          from_utf8(name), from_utf8(tclass1.name()),
 450                                          from_utf8(tclass2.name()));
 451                                 // To warn the user that something had to be done.
 452                                 errorlist.push_back(ErrorItem(
 453                                         _("Undefined character style"),
 454                                         s, it.paragraph().id(), it.pos(), it.pos() + 1));
 455                         } else if (inset.undefined()) {
 456                                 // The character style is undefined in
 457                                 // tclass1 and is defined in tclass2
 458                                 inset.setDefined(found_cs);
 459                         }
 460                 }
 461         }
 462 }
 463
 464
 465 std::vector<docstring> const availableSelections(Buffer const & buffer)
 466 {
 467         vector<docstring> selList;
 468
 469         CutStack::const_iterator cit = theCuts.begin();
 470         CutStack::const_iterator end = theCuts.end();
 471         for (; cit != end; ++cit) {
 472                 // we do not use cit-> here because gcc 2.9x does not
 473                 // like it (JMarc)
 474                 ParagraphList const & pars = (*cit).first;
 475                 docstring asciiSel;
 476                 ParagraphList::const_iterator pit = pars.begin();
 477                 ParagraphList::const_iterator pend = pars.end();
 478                 for (; pit != pend; ++pit) {
 479                         asciiSel += pit->asString(buffer, false);
 480                         if (asciiSel.size() > 25) {
 481                                 asciiSel.replace(22, docstring::npos,
 482                                                  from_ascii("..."));
 483                                 break;
 484                         }
 485                 }
 486
 487                 selList.push_back(asciiSel);
 488         }
 489
 490         return selList;
 491 }
 492
 493
 494 size_type numberOfSelections()
 495 {
 496         return theCuts.size();
 497 }
 498
 499
 500 void cutSelection(LCursor & cur, bool doclear, bool realcut)
 501 {
 502         // This doesn't make sense, if there is no selection
 503         if (!cur.selection())
 504                 return;
 505
 506         // OK, we have a selection. This is always between cur.selBegin()
 507         // and cur.selEnd()
 508
 509         if (cur.inTexted()) {
 510                 LyXText * text = cur.text();
 511                 BOOST_ASSERT(text);
 512
 513                 // make sure that the depth behind the selection are restored, too
 514                 recordUndoSelection(cur);
 515                 pit_type begpit = cur.selBegin().pit();
 516                 pit_type endpit = cur.selEnd().pit();
 517
 518                 int endpos = cur.selEnd().pos();
 519
 520                 BufferParams const & bp = cur.buffer().params();
 521                 if (realcut) {
 522                         copySelectionHelper(cur.buffer(),
 523                                 text->paragraphs(),
 524                                 begpit, endpit,
 525                                 cur.selBegin().pos(), endpos,
 526                                 bp.textclass);
 527                         // Stuff what we got on the clipboard.
 528                         // Even if there is no selection.
 529                         putClipboard(theCuts[0].first, theCuts[0].second,
 530                                 cur.selectionAsString(true));
 531                 }
 532
 533                 boost::tie(endpit, endpos) =
 534                         eraseSelectionHelper(bp,
 535                                 text->paragraphs(),
 536                                 begpit, endpit,
 537                                 cur.selBegin().pos(), endpos,
 538                                 doclear);
 539
 540                 // sometimes necessary
 541                 if (doclear)
 542                         text->paragraphs()[begpit].stripLeadingSpaces(bp.trackChanges);
 543
 544                 // cutSelection can invalidate the cursor so we need to set
 545                 // it anew. (Lgb)
 546                 // we prefer the end for when tracking changes
 547                 cur.pos() = endpos;
 548                 cur.pit() = endpit;
 549
 550                 // need a valid cursor. (Lgb)
 551                 cur.clearSelection();
 552                 updateLabels(cur.buffer());
 553                 theSelection().haveSelection(false);
 554
 555                 // tell tabular that a recent copy happened
 556                 dirtyTabularStack(false);
 557         }
 558
 559         if (cur.inMathed()) {
 560                 if (cur.selBegin().idx() != cur.selEnd().idx()) {
 561                         // The current selection spans more than one cell.
 562                         // Record all cells
 563                         recordUndoInset(cur);
 564                 } else {
 565                         // Record only the current cell to avoid a jumping
 566                         // cursor after undo
 567                         recordUndo(cur);
 568                 }
 569                 if (realcut)
 570                         copySelection(cur);
 571                 eraseSelection(cur);
 572         }
 573 }
 574
 575
 576 void copySelection(LCursor & cur)
 577 {
 578         copySelection(cur, cur.selectionAsString(true));
 579 }
 580
 581
 582 void copySelection(LCursor & cur, docstring const & plaintext)
 583 {
 584         copySelectionToStack(cur);
 585
 586         // stuff the selection onto the X clipboard, from an explicit copy request
 587         putClipboard(theCuts[0].first, theCuts[0].second, plaintext);
 588 }
 589
 590
 591 void copySelectionToStack(LCursor & cur)
 592 {
 593         // this doesn't make sense, if there is no selection
 594         if (!cur.selection())
 595                 return;
 596
 597         if (cur.inTexted()) {
 598                 LyXText * text = cur.text();
 599                 BOOST_ASSERT(text);
 600                 // ok we have a selection. This is always between cur.selBegin()
 601                 // and sel_end cursor
 602
 603                 // copy behind a space if there is one
 604                 ParagraphList & pars = text->paragraphs();
 605                 pos_type pos = cur.selBegin().pos();
 606                 pit_type par = cur.selBegin().pit();
 607                 while (pos < pars[par].size()
 608                                          && pars[par].isLineSeparator(pos)
 609                                          && (par != cur.selEnd().pit() || pos < cur.selEnd().pos()))
 610                         ++pos;
 611
 612                 copySelectionHelper(cur.buffer(), pars, par, cur.selEnd().pit(),
 613                         pos, cur.selEnd().pos(), cur.buffer().params().textclass);
 614         }
 615
 616         if (cur.inMathed()) {
 617                 //lyxerr << "copySelection in mathed" << endl;
 618                 ParagraphList pars;
 619                 Paragraph par;
 620                 BufferParams const & bp = cur.buffer().params();
 621                 par.layout(bp.getLyXTextClass().defaultLayout());
 622                 par.insert(0, grabSelection(cur), LyXFont(), Change(Change::UNCHANGED));
 623                 pars.push_back(par);
 624                 theCuts.push(make_pair(pars, bp.textclass));
 625         }
 626         // tell tabular that a recent copy happened
 627         dirtyTabularStack(false);
 628 }
 629
 630
 631 docstring getSelection(Buffer const & buf, size_t sel_index)
 632 {
 633         return sel_index < theCuts.size()
 634                 ? theCuts[sel_index].first.back().asString(buf, false)
 635                 : docstring();
 636 }
 637
 638
 639 void pasteParagraphList(LCursor & cur, ParagraphList const & parlist,
 640                         textclass_type textclass, ErrorList & errorList)
 641 {
 642         if (cur.inTexted()) {
 643                 LyXText * text = cur.text();
 644                 BOOST_ASSERT(text);
 645
 646                 pit_type endpit;
 647                 PitPosPair ppp;
 648
 649                 boost::tie(ppp, endpit) =
 650                         pasteSelectionHelper(cur, parlist,
 651                                              textclass, errorList);
 652                 updateLabels(cur.buffer());
 653                 cur.clearSelection();
 654                 text->setCursor(cur.top(), ppp.first, ppp.second);
 655         }
 656
 657         // mathed is handled in InsetMathNest/InsetMathGrid
 658         BOOST_ASSERT(!cur.inMathed());
 659 }
 660
 661
 662 void pasteClipboard(LCursor & cur, ErrorList & errorList, bool asParagraphs)
 663 {
 664         // Use internal clipboard if it is the most recent one
 665         if (theClipboard().isInternal()) {
 666                 pasteSelection(cur, errorList, 0);
 667                 return;
 668         }
 669
 670         // First try LyX format
 671         if (theClipboard().hasLyXContents()) {
 672                 string lyx = theClipboard().getAsLyX();
 673                 if (!lyx.empty()) {
 674                         Buffer buffer(string(), false);
 675                         buffer.setUnnamed(true);
 676                         if (buffer.readString(lyx)) {
 677                                 recordUndo(cur);
 678                                 pasteParagraphList(cur, buffer.paragraphs(),
 679                                         buffer.params().textclass, errorList);
 680                                 cur.setSelection();
 681                                 return;
 682                         }
 683                 }
 684         }
 685
 686         // Then try plain text
 687         docstring const text = theClipboard().getAsText();
 688         if (text.empty())
 689                 return;
 690         recordUndo(cur);
 691         if (asParagraphs)
 692                 cur.text()->insertStringAsParagraphs(cur, text);
 693         else
 694                 cur.text()->insertStringAsLines(cur, text);
 695 }
 696
 697
 698 void pasteSelection(LCursor & cur, ErrorList & errorList, size_t sel_index)
 699 {
 700         // this does not make sense, if there is nothing to paste
 701         if (!checkPastePossible(sel_index))
 702                 return;
 703
 704         recordUndo(cur);
 705         pasteParagraphList(cur, theCuts[sel_index].first,
 706                            theCuts[sel_index].second, errorList);
 707         cur.setSelection();
 708 }
 709
 710
 711 void replaceSelectionWithString(LCursor & cur, docstring const & str, bool backwards)
 712 {
 713         recordUndo(cur);
 714         DocIterator selbeg = cur.selectionBegin();
 715
 716         // Get font setting before we cut
 717         LyXFont const font =
 718                 selbeg.paragraph().getFontSettings(cur.buffer().params(), selbeg.pos());
 719
 720         // Insert the new string
 721         pos_type pos = cur.selEnd().pos();
 722         Paragraph & par = cur.selEnd().paragraph();
 723         docstring::const_iterator cit = str.begin();
 724         docstring::const_iterator end = str.end();
 725         for (; cit != end; ++cit, ++pos)
 726                 par.insertChar(pos, *cit, font, cur.buffer().params().trackChanges);
 727
 728         // Cut the selection
 729         cutSelection(cur, true, false);
 730
 731         // select the replacement
 732         if (backwards) {
 733                 selbeg.pos() += str.length();
 734                 cur.setSelection(selbeg, -int(str.length()));
 735         } else
 736                 cur.setSelection(selbeg, str.length());
 737 }
 738
 739
 740 void replaceSelection(LCursor & cur)
 741 {
 742         if (cur.selection())
 743                 cutSelection(cur, true, false);
 744 }
 745
 746
 747 void eraseSelection(LCursor & cur)
 748 {
 749         //lyxerr << "cap::eraseSelection begin: " << cur << endl;
 750         CursorSlice const & i1 = cur.selBegin();
 751         CursorSlice const & i2 = cur.selEnd();
 752         if (i1.inset().asInsetMath()) {
 753                 cur.top() = i1;
 754                 if (i1.idx() == i2.idx()) {
 755                         i1.cell().erase(i1.pos(), i2.pos());
 756                         // We may have deleted i1.cell(cur.pos()).
 757                         // Make sure that pos is valid.
 758                         if (cur.pos() > cur.lastpos())
 759                                 cur.pos() = cur.lastpos();
 760                 } else {
 761                         InsetMath * p = i1.asInsetMath();
 762                         InsetBase::row_type r1, r2;
 763                         InsetBase::col_type c1, c2;
 764                         region(i1, i2, r1, r2, c1, c2);
 765                         for (InsetBase::row_type row = r1; row <= r2; ++row)
 766                                 for (InsetBase::col_type col = c1; col <= c2; ++col)
 767                                         p->cell(p->index(row, col)).clear();
 768                         // We've deleted the whole cell. Only pos 0 is valid.
 769                         cur.pos() = 0;
 770                 }
 771                 // need a valid cursor. (Lgb)
 772                 cur.clearSelection();
 773                 theSelection().haveSelection(false);
 774         } else {
 775                 lyxerr << "can't erase this selection 1" << endl;
 776         }
 777         //lyxerr << "cap::eraseSelection end: " << cur << endl;
 778 }
 779
 780
 781 void selDel(LCursor & cur)
 782 {
 783         //lyxerr << "cap::selDel" << endl;
 784         if (cur.selection())
 785                 eraseSelection(cur);
 786 }
 787
 788
 789 void selClearOrDel(LCursor & cur)
 790 {
 791         //lyxerr << "cap::selClearOrDel" << endl;
 792         if (lyxrc.auto_region_delete)
 793                 selDel(cur);
 794         else
 795                 cur.selection() = false;
 796 }
 797
 798
 799 docstring grabSelection(LCursor const & cur)
 800 {
 801         if (!cur.selection())
 802                 return docstring();
 803
 804         // FIXME: What is wrong with the following?
 805 #if 0
 806         std::ostringstream os;
 807         for (DocIterator dit = cur.selectionBegin();
 808              dit != cur.selectionEnd(); dit.forwardPos())
 809                 os << asString(dit.cell());
 810         return os.str();
 811 #endif
 812
 813         CursorSlice i1 = cur.selBegin();
 814         CursorSlice i2 = cur.selEnd();
 815
 816         if (i1.idx() == i2.idx()) {
 817                 if (i1.inset().asInsetMath()) {
 818                         MathArray::const_iterator it = i1.cell().begin();
 819                         return asString(MathArray(it + i1.pos(), it + i2.pos()));
 820                 } else {
 821                         return from_ascii("unknown selection 1");
 822                 }
 823         }
 824
 825         InsetBase::row_type r1, r2;
 826         InsetBase::col_type c1, c2;
 827         region(i1, i2, r1, r2, c1, c2);
 828
 829         docstring data;
 830         if (i1.inset().asInsetMath()) {
 831                 for (InsetBase::row_type row = r1; row <= r2; ++row) {
 832                         if (row > r1)
 833                                 data += "\\\\";
 834                         for (InsetBase::col_type col = c1; col <= c2; ++col) {
 835                                 if (col > c1)
 836                                         data += '&';
 837                                 data += asString(i1.asInsetMath()->
 838                                         cell(i1.asInsetMath()->index(row, col)));
 839                         }
 840                 }
 841         } else {
 842                 data = from_ascii("unknown selection 2");
 843         }
 844         return data;
 845 }
 846
 847
 848 void dirtyTabularStack(bool b)
 849 {
 850         dirty_tabular_stack_ = b;
 851 }
 852
 853
 854 bool tabularStackDirty()
 855 {
 856         return dirty_tabular_stack_;
 857 }
 858
 859
 860 } // namespace cap
 861
 862 } // namespace lyx