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 #include <string>
  55
  56
  57 namespace lyx {
  58
  59 using support::bformat;
  60 using frontend::Clipboard;
  61
  62 using std::endl;
  63 using std::for_each;
  64 using std::make_pair;
  65 using std::pair;
  66 using std::vector;
  67 using std::string;
  68
  69
  70 namespace {
  71
  72 typedef std::pair<pit_type, int> PitPosPair;
  73
  74 typedef limited_stack<pair<ParagraphList, textclass_type> > CutStack;
  75
  76 CutStack theCuts(10);
  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         InsetBase::row_type & r1, InsetBase::row_type & r2,
  86         InsetBase::col_type & c1, InsetBase::col_type & c2)
  87 {
  88         InsetBase & p = i1.inset();
  89         c1 = p.col(i1.idx());
  90         c2 = p.col(i2.idx());
  91         if (c1 > c2)
  92                 std::swap(c1, c2);
  93         r1 = p.row(i1.idx());
  94         r2 = p.row(i2.idx());
  95         if (r1 > r2)
  96                 std::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(LCursor & cur, ParagraphList const & parlist,
 108                      textclass_type textclass, 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         textclass_type const tc = buffer.params().textclass;
 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         if (pars[pit].inInset() &&
 130             pars[pit].inInset()->lyxCode() == InsetBase::ERT_CODE) {
 131                 for (ParagraphList::size_type i = 0; i < insertion.size(); ++i) {
 132                         for (pos_type j = 0; j < insertion[i].size(); ++j) {
 133                                 if (insertion[i].isNewline(j)) {
 134                                         // do not track deletion of newline
 135                                         insertion[i].eraseChar(j, false);
 136                                         breakParagraphConservative(
 137                                                         buffer.params(),
 138                                                         insertion, i, j);
 139                                 }
 140                         }
 141                 }
 142         }
 143
 144         // If we are in an inset which returns forceDefaultParagraphs,
 145         // set the paragraphs to default
 146         if (cur.inset().forceDefaultParagraphs(cur.idx())) {
 147                 LyXLayout_ptr const layout =
 148                         buffer.params().getLyXTextClass().defaultLayout();
 149                 ParagraphList::iterator const end = insertion.end();
 150                 for (ParagraphList::iterator par = insertion.begin();
 151                                 par != end; ++par)
 152                         par->layout(layout);
 153         }
 154
 155         // Make sure there is no class difference.
 156         InsetText in;
 157         // This works without copying any paragraph data because we have
 158         // a specialized swap method for ParagraphList. This is important
 159         // since we store pointers to insets at some places and we don't
 160         // want to invalidate them.
 161         insertion.swap(in.paragraphs());
 162         cap::switchBetweenClasses(textclass, tc, in, errorlist);
 163         insertion.swap(in.paragraphs());
 164
 165         ParagraphList::iterator tmpbuf = insertion.begin();
 166         int depth_delta = pars[pit].params().depth() - tmpbuf->params().depth();
 167
 168         depth_type max_depth = pars[pit].getMaxDepthAfter();
 169
 170         for (; tmpbuf != insertion.end(); ++tmpbuf) {
 171                 // If we have a negative jump so that the depth would
 172                 // go below 0 depth then we have to redo the delta to
 173                 // this new max depth level so that subsequent
 174                 // paragraphs are aligned correctly to this paragraph
 175                 // at level 0.
 176                 if (int(tmpbuf->params().depth()) + depth_delta < 0)
 177                         depth_delta = 0;
 178
 179                 // Set the right depth so that we are not too deep or shallow.
 180                 tmpbuf->params().depth(tmpbuf->params().depth() + depth_delta);
 181                 if (tmpbuf->params().depth() > max_depth)
 182                         tmpbuf->params().depth(max_depth);
 183
 184                 // Only set this from the 2nd on as the 2nd depends
 185                 // for maxDepth still on pit.
 186                 if (tmpbuf != insertion.begin())
 187                         max_depth = tmpbuf->getMaxDepthAfter();
 188
 189                 // Set the inset owner of this paragraph.
 190                 tmpbuf->setInsetOwner(pars[pit].inInset());
 191                 for (pos_type i = 0; i < tmpbuf->size(); ++i) {
 192                         if (tmpbuf->getChar(i) == Paragraph::META_INSET &&
 193                             !pars[pit].insetAllowed(tmpbuf->getInset(i)->lyxCode()))
 194                                 // do not track deletion of invalid insets
 195                                 tmpbuf->eraseChar(i--, false);
 196                 }
 197
 198                 tmpbuf->setChange(Change(buffer.params().trackChanges ?
 199                                          Change::INSERTED : Change::UNCHANGED));
 200         }
 201
 202         bool const empty = pars[pit].empty();
 203         if (!empty) {
 204                 // Make the buf exactly the same layout as the cursor
 205                 // paragraph.
 206                 insertion.begin()->makeSameLayout(pars[pit]);
 207         }
 208
 209         // Prepare the paragraphs and insets for insertion.
 210         // A couple of insets store buffer references so need updating.
 211         insertion.swap(in.paragraphs());
 212
 213         ParIterator fpit = par_iterator_begin(in);
 214         ParIterator fend = par_iterator_end(in);
 215
 216         for (; fpit != fend; ++fpit) {
 217                 InsetList::const_iterator lit = fpit->insetlist.begin();
 218                 InsetList::const_iterator eit = fpit->insetlist.end();
 219
 220                 for (; lit != eit; ++lit) {
 221                         switch (lit->inset->lyxCode()) {
 222                         case InsetBase::TABULAR_CODE: {
 223                                 InsetTabular * it = static_cast<InsetTabular*>(lit->inset);
 224                                 it->buffer(&buffer);
 225                                 break;
 226                         }
 227
 228                         default:
 229                                 break; // nothing
 230                         }
 231                 }
 232         }
 233         insertion.swap(in.paragraphs());
 234
 235         // Split the paragraph for inserting the buf if necessary.
 236         if (!empty)
 237                 breakParagraphConservative(buffer.params(), pars, pit, pos);
 238
 239         // Paste it!
 240         if (empty) {
 241                 pars.insert(boost::next(pars.begin(), pit),
 242                             insertion.begin(),
 243                             insertion.end());
 244
 245                 // merge the empty par with the last par of the insertion
 246                 mergeParagraph(buffer.params(), pars,
 247                                pit + insertion.size() - 1);
 248         } else {
 249                 pars.insert(boost::next(pars.begin(), pit + 1),
 250                             insertion.begin(),
 251                             insertion.end());
 252
 253                 // merge the first par of the insertion with the current par
 254                 mergeParagraph(buffer.params(), pars, pit);
 255         }
 256
 257         pit_type last_paste = pit + insertion.size() - 1;
 258
 259         // Store the new cursor position.
 260         pit = last_paste;
 261         pos = pars[last_paste].size();
 262
 263         // Join (conditionally) last pasted paragraph with next one, i.e.,
 264         // the tail of the spliced document paragraph
 265         if (!empty && last_paste + 1 != pit_type(pars.size())) {
 266                 if (pars[last_paste + 1].hasSameLayout(pars[last_paste])) {
 267                         mergeParagraph(buffer.params(), pars, last_paste);
 268                 } else if (pars[last_paste + 1].empty()) {
 269                         pars[last_paste + 1].makeSameLayout(pars[last_paste]);
 270                         mergeParagraph(buffer.params(), pars, last_paste);
 271                 } else if (pars[last_paste].empty()) {
 272                         pars[last_paste].makeSameLayout(pars[last_paste + 1]);
 273                         mergeParagraph(buffer.params(), pars, last_paste);
 274                 } else {
 275                         pars[last_paste + 1].stripLeadingSpaces(buffer.params().trackChanges);
 276                         ++last_paste;
 277                 }
 278         }
 279
 280         return make_pair(PitPosPair(pit, pos), last_paste + 1);
 281 }
 282
 283
 284 PitPosPair eraseSelectionHelper(BufferParams const & params,
 285         ParagraphList & pars,
 286         pit_type startpit, pit_type endpit,
 287         int startpos, int endpos, bool doclear)
 288 {
 289         // Start of selection is really invalid.
 290         if (startpit == pit_type(pars.size()) ||
 291             (startpos > pars[startpit].size()))
 292                 return PitPosPair(endpit, endpos);
 293
 294         // Start and end is inside same paragraph
 295         if (endpit == pit_type(pars.size()) || startpit == endpit) {
 296                 endpos -= pars[startpit].eraseChars(startpos, endpos, params.trackChanges);
 297                 return PitPosPair(endpit, endpos);
 298         }
 299
 300         for (pit_type pit = startpit; pit != endpit + 1;) {
 301                 pos_type const left  = (pit == startpit ? startpos : 0);
 302                 pos_type const right = (pit == endpit ? endpos : pars[pit].size() + 1);
 303
 304                 bool const merge = pars[pit].isMergedOnEndOfParDeletion(params.trackChanges);
 305
 306                 // Logically erase only, including the end-of-paragraph character
 307                 pars[pit].eraseChars(left, right, params.trackChanges);
 308
 309                 // Separate handling of paragraph break:
 310                 if (merge && pit != endpit &&
 311                     (pit + 1 != endpit || pars[pit].hasSameLayout(pars[pit + 1]))) {
 312                         pos_type const thissize = pars[pit].size();
 313                         if (doclear)
 314                                 pars[pit + 1].stripLeadingSpaces(params.trackChanges);
 315                         mergeParagraph(params, pars, pit);
 316                         --endpit;
 317                         if (pit == endpit)
 318                                 endpos += thissize;
 319                 } else
 320                         ++pit;
 321         }
 322
 323         // Ensure legal cursor pos:
 324         endpit = startpit;
 325         endpos = startpos;
 326         return PitPosPair(endpit, endpos);
 327 }
 328
 329
 330 void putClipboard(ParagraphList const & paragraphs, textclass_type textclass,
 331                   docstring const & plaintext)
 332 {
 333         Buffer buffer(string(), false);
 334         buffer.setUnnamed(true);
 335         buffer.paragraphs() = paragraphs;
 336         buffer.params().textclass = textclass;
 337         std::ostringstream lyx;
 338         if (buffer.write(lyx))
 339                 theClipboard().put(lyx.str(), plaintext);
 340         else
 341                 theClipboard().put(string(), plaintext);
 342 }
 343
 344
 345 void copySelectionHelper(Buffer const & buf, ParagraphList & pars,
 346         pit_type startpit, pit_type endpit,
 347         int start, int end, textclass_type tc)
 348 {
 349         BOOST_ASSERT(0 <= start && start <= pars[startpit].size());
 350         BOOST_ASSERT(0 <= end && end <= pars[endpit].size());
 351         BOOST_ASSERT(startpit != endpit || start <= end);
 352
 353         // Clone the paragraphs within the selection.
 354         ParagraphList paragraphs(boost::next(pars.begin(), startpit),
 355                                  boost::next(pars.begin(), endpit + 1));
 356
 357         ParagraphList::iterator it = paragraphs.begin();
 358         ParagraphList::iterator it_end = paragraphs.end();
 359
 360         for (; it != it_end; it++) {
 361                 // ERT paragraphs have the Language latex_language.
 362                 // This is invalid outside of ERT, so we need to change it
 363                 // to the buffer language.
 364                 if (it->ownerCode() == InsetBase::ERT_CODE) {
 365                         it->changeLanguage(buf.params(), latex_language,
 366                                            buf.getLanguage());
 367                 }
 368                 it->setInsetOwner(0);
 369         }
 370
 371         // Cut out the end of the last paragraph.
 372         Paragraph & back = paragraphs.back();
 373         // do not track deletion here; it is an internal action not visible to the user
 374         back.eraseChars(end, back.size(), false);
 375
 376         // Cut out the begin of the first paragraph
 377         Paragraph & front = paragraphs.front();
 378         // again, do not track deletion
 379         front.eraseChars(0, start, false);
 380
 381         theCuts.push(make_pair(paragraphs, tc));
 382 }
 383
 384 } // namespace anon
 385
 386
 387
 388
 389 namespace cap {
 390
 391 docstring grabAndEraseSelection(LCursor & cur)
 392 {
 393         if (!cur.selection())
 394                 return docstring();
 395         docstring res = grabSelection(cur);
 396         eraseSelection(cur);
 397         return res;
 398 }
 399
 400
 401 void switchBetweenClasses(textclass_type c1, textclass_type c2,
 402         InsetText & in, ErrorList & errorlist)
 403 {
 404         BOOST_ASSERT(!in.paragraphs().empty());
 405         if (c1 == c2)
 406                 return;
 407
 408         LyXTextClass const & tclass1 = textclasslist[c1];
 409         LyXTextClass const & tclass2 = textclasslist[c2];
 410
 411         // layouts
 412         ParIterator end = par_iterator_end(in);
 413         for (ParIterator it = par_iterator_begin(in); it != end; ++it) {
 414                 string const name = it->layout()->name();
 415                 bool hasLayout = tclass2.hasLayout(name);
 416
 417                 if (hasLayout)
 418                         it->layout(tclass2[name]);
 419                 else
 420                         it->layout(tclass2.defaultLayout());
 421
 422                 if (!hasLayout && name != tclass1.defaultLayoutName()) {
 423                         docstring const s = bformat(
 424                                                  _("Layout had to be changed from\n%1$s to %2$s\n"
 425                                                 "because of class conversion from\n%3$s to %4$s"),
 426                          from_utf8(name), from_utf8(it->layout()->name()),
 427                          from_utf8(tclass1.name()), from_utf8(tclass2.name()));
 428                         // To warn the user that something had to be done.
 429                         errorlist.push_back(ErrorItem(_("Changed Layout"), s,
 430                                                       it->id(), 0,
 431                                                       it->size()));
 432                 }
 433         }
 434
 435         // character styles
 436         InsetIterator const i_end = inset_iterator_end(in);
 437         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 438                 if (it->lyxCode() == InsetBase::CHARSTYLE_CODE) {
 439                         InsetCharStyle & inset =
 440                                 static_cast<InsetCharStyle &>(*it);
 441                         string const name = inset.params().type;
 442                         CharStyles::iterator const found_cs =
 443                                 tclass2.charstyle(name);
 444                         if (found_cs == tclass2.charstyles().end()) {
 445                                 // The character style is undefined in tclass2
 446                                 inset.setUndefined();
 447                                 docstring const s = bformat(_(
 448                                         "Character style %1$s is "
 449                                         "undefined because of class "
 450                                         "conversion from\n%2$s to %3$s"),
 451                                          from_utf8(name), from_utf8(tclass1.name()),
 452                                          from_utf8(tclass2.name()));
 453                                 // To warn the user that something had to be done.
 454                                 errorlist.push_back(ErrorItem(
 455                                         _("Undefined character style"),
 456                                         s, it.paragraph().id(), it.pos(), it.pos() + 1));
 457                         } else if (inset.undefined()) {
 458                                 // The character style is undefined in
 459                                 // tclass1 and is defined in tclass2
 460                                 inset.setDefined(found_cs);
 461                         }
 462                 }
 463         }
 464 }
 465
 466
 467 std::vector<docstring> const availableSelections(Buffer const & buffer)
 468 {
 469         vector<docstring> selList;
 470
 471         CutStack::const_iterator cit = theCuts.begin();
 472         CutStack::const_iterator end = theCuts.end();
 473         for (; cit != end; ++cit) {
 474                 // we do not use cit-> here because gcc 2.9x does not
 475                 // like it (JMarc)
 476                 ParagraphList const & pars = (*cit).first;
 477                 docstring asciiSel;
 478                 ParagraphList::const_iterator pit = pars.begin();
 479                 ParagraphList::const_iterator pend = pars.end();
 480                 for (; pit != pend; ++pit) {
 481                         asciiSel += pit->asString(buffer, false);
 482                         if (asciiSel.size() > 25) {
 483                                 asciiSel.replace(22, docstring::npos,
 484                                                  from_ascii("..."));
 485                                 break;
 486                         }
 487                 }
 488
 489                 selList.push_back(asciiSel);
 490         }
 491
 492         return selList;
 493 }
 494
 495
 496 size_type numberOfSelections()
 497 {
 498         return theCuts.size();
 499 }
 500
 501
 502 void cutSelection(LCursor & cur, bool doclear, bool realcut)
 503 {
 504         // This doesn't make sense, if there is no selection
 505         if (!cur.selection())
 506                 return;
 507
 508         // OK, we have a selection. This is always between cur.selBegin()
 509         // and cur.selEnd()
 510
 511         if (cur.inTexted()) {
 512                 LyXText * text = cur.text();
 513                 BOOST_ASSERT(text);
 514
 515                 // make sure that the depth behind the selection are restored, too
 516                 recordUndoSelection(cur);
 517                 pit_type begpit = cur.selBegin().pit();
 518                 pit_type endpit = cur.selEnd().pit();
 519
 520                 int endpos = cur.selEnd().pos();
 521
 522                 BufferParams const & bp = cur.buffer().params();
 523                 if (realcut) {
 524                         copySelectionHelper(cur.buffer(),
 525                                 text->paragraphs(),
 526                                 begpit, endpit,
 527                                 cur.selBegin().pos(), endpos,
 528                                 bp.textclass);
 529                         // Stuff what we got on the clipboard.
 530                         // Even if there is no selection.
 531                         putClipboard(theCuts[0].first, theCuts[0].second,
 532                                 cur.selectionAsString(true));
 533                 }
 534
 535                 boost::tie(endpit, endpos) =
 536                         eraseSelectionHelper(bp,
 537                                 text->paragraphs(),
 538                                 begpit, endpit,
 539                                 cur.selBegin().pos(), endpos,
 540                                 doclear);
 541
 542                 // sometimes necessary
 543                 if (doclear)
 544                         text->paragraphs()[begpit].stripLeadingSpaces(bp.trackChanges);
 545
 546                 // cutSelection can invalidate the cursor so we need to set
 547                 // it anew. (Lgb)
 548                 // we prefer the end for when tracking changes
 549                 cur.pos() = endpos;
 550                 cur.pit() = endpit;
 551
 552                 // need a valid cursor. (Lgb)
 553                 cur.clearSelection();
 554                 updateLabels(cur.buffer());
 555                 theSelection().haveSelection(false);
 556
 557                 // tell tabular that a recent copy happened
 558                 dirtyTabularStack(false);
 559         }
 560
 561         if (cur.inMathed()) {
 562                 if (cur.selBegin().idx() != cur.selEnd().idx()) {
 563                         // The current selection spans more than one cell.
 564                         // Record all cells
 565                         recordUndoInset(cur);
 566                 } else {
 567                         // Record only the current cell to avoid a jumping
 568                         // cursor after undo
 569                         recordUndo(cur);
 570                 }
 571                 if (realcut)
 572                         copySelection(cur);
 573                 eraseSelection(cur);
 574         }
 575 }
 576
 577
 578 void copySelection(LCursor & cur)
 579 {
 580         copySelection(cur, cur.selectionAsString(true));
 581 }
 582
 583
 584 void copySelection(LCursor & cur, docstring const & plaintext)
 585 {
 586         copySelectionToStack(cur);
 587
 588         // stuff the selection onto the X clipboard, from an explicit copy request
 589         putClipboard(theCuts[0].first, theCuts[0].second, plaintext);
 590 }
 591
 592
 593 void copySelectionToStack(LCursor & cur)
 594 {
 595         // this doesn't make sense, if there is no selection
 596         if (!cur.selection())
 597                 return;
 598
 599         if (cur.inTexted()) {
 600                 LyXText * text = cur.text();
 601                 BOOST_ASSERT(text);
 602                 // ok we have a selection. This is always between cur.selBegin()
 603                 // and sel_end cursor
 604
 605                 // copy behind a space if there is one
 606                 ParagraphList & pars = text->paragraphs();
 607                 pos_type pos = cur.selBegin().pos();
 608                 pit_type par = cur.selBegin().pit();
 609                 while (pos < pars[par].size()
 610                                          && pars[par].isLineSeparator(pos)
 611                                          && (par != cur.selEnd().pit() || pos < cur.selEnd().pos()))
 612                         ++pos;
 613
 614                 copySelectionHelper(cur.buffer(), pars, par, cur.selEnd().pit(),
 615                         pos, cur.selEnd().pos(), cur.buffer().params().textclass);
 616         }
 617
 618         if (cur.inMathed()) {
 619                 //lyxerr << "copySelection in mathed" << endl;
 620                 ParagraphList pars;
 621                 Paragraph par;
 622                 BufferParams const & bp = cur.buffer().params();
 623                 par.layout(bp.getLyXTextClass().defaultLayout());
 624                 par.insert(0, grabSelection(cur), LyXFont(), Change(Change::UNCHANGED));
 625                 pars.push_back(par);
 626                 theCuts.push(make_pair(pars, bp.textclass));
 627         }
 628         // tell tabular that a recent copy happened
 629         dirtyTabularStack(false);
 630 }
 631
 632
 633 docstring getSelection(Buffer const & buf, size_t sel_index)
 634 {
 635         return sel_index < theCuts.size()
 636                 ? theCuts[sel_index].first.back().asString(buf, false)
 637                 : docstring();
 638 }
 639
 640
 641 void pasteParagraphList(LCursor & cur, ParagraphList const & parlist,
 642                         textclass_type textclass, ErrorList & errorList)
 643 {
 644         if (cur.inTexted()) {
 645                 LyXText * text = cur.text();
 646                 BOOST_ASSERT(text);
 647
 648                 pit_type endpit;
 649                 PitPosPair ppp;
 650
 651                 boost::tie(ppp, endpit) =
 652                         pasteSelectionHelper(cur, parlist,
 653                                              textclass, errorList);
 654                 updateLabels(cur.buffer());
 655                 cur.clearSelection();
 656                 text->setCursor(cur.top(), ppp.first, ppp.second);
 657         }
 658
 659         // mathed is handled in InsetMathNest/InsetMathGrid
 660         BOOST_ASSERT(!cur.inMathed());
 661 }
 662
 663
 664 void pasteClipboard(LCursor & cur, ErrorList & errorList, bool asParagraphs)
 665 {
 666         // Use internal clipboard if it is the most recent one
 667         if (theClipboard().isInternal()) {
 668                 pasteSelection(cur, errorList, 0);
 669                 return;
 670         }
 671
 672         // First try LyX format
 673         if (theClipboard().hasLyXContents()) {
 674                 string lyx = theClipboard().getAsLyX();
 675                 if (!lyx.empty()) {
 676                         Buffer buffer(string(), false);
 677                         buffer.setUnnamed(true);
 678                         if (buffer.readString(lyx)) {
 679                                 recordUndo(cur);
 680                                 pasteParagraphList(cur, buffer.paragraphs(),
 681                                         buffer.params().textclass, errorList);
 682                                 cur.setSelection();
 683                                 return;
 684                         }
 685                 }
 686         }
 687
 688         // Then try plain text
 689         docstring const text = theClipboard().getAsText();
 690         if (text.empty())
 691                 return;
 692         recordUndo(cur);
 693         if (asParagraphs)
 694                 cur.text()->insertStringAsParagraphs(cur, text);
 695         else
 696                 cur.text()->insertStringAsLines(cur, text);
 697 }
 698
 699
 700 void pasteSelection(LCursor & cur, ErrorList & errorList, size_t sel_index)
 701 {
 702         // this does not make sense, if there is nothing to paste
 703         if (!checkPastePossible(sel_index))
 704                 return;
 705
 706         recordUndo(cur);
 707         pasteParagraphList(cur, theCuts[sel_index].first,
 708                            theCuts[sel_index].second, errorList);
 709         cur.setSelection();
 710 }
 711
 712
 713 void replaceSelectionWithString(LCursor & cur, docstring const & str, bool backwards)
 714 {
 715         recordUndo(cur);
 716         DocIterator selbeg = cur.selectionBegin();
 717
 718         // Get font setting before we cut
 719         LyXFont const font =
 720                 selbeg.paragraph().getFontSettings(cur.buffer().params(), selbeg.pos());
 721
 722         // Insert the new string
 723         pos_type pos = cur.selEnd().pos();
 724         Paragraph & par = cur.selEnd().paragraph();
 725         docstring::const_iterator cit = str.begin();
 726         docstring::const_iterator end = str.end();
 727         for (; cit != end; ++cit, ++pos)
 728                 par.insertChar(pos, *cit, font, cur.buffer().params().trackChanges);
 729
 730         // Cut the selection
 731         cutSelection(cur, true, false);
 732
 733         // select the replacement
 734         if (backwards) {
 735                 selbeg.pos() += str.length();
 736                 cur.setSelection(selbeg, -int(str.length()));
 737         } else
 738                 cur.setSelection(selbeg, str.length());
 739 }
 740
 741
 742 void replaceSelection(LCursor & cur)
 743 {
 744         if (cur.selection())
 745                 cutSelection(cur, true, false);
 746 }
 747
 748
 749 void eraseSelection(LCursor & cur)
 750 {
 751         //lyxerr << "cap::eraseSelection begin: " << cur << endl;
 752         CursorSlice const & i1 = cur.selBegin();
 753         CursorSlice const & i2 = cur.selEnd();
 754         if (i1.inset().asInsetMath()) {
 755                 cur.top() = i1;
 756                 if (i1.idx() == i2.idx()) {
 757                         i1.cell().erase(i1.pos(), i2.pos());
 758                         // We may have deleted i1.cell(cur.pos()).
 759                         // Make sure that pos is valid.
 760                         if (cur.pos() > cur.lastpos())
 761                                 cur.pos() = cur.lastpos();
 762                 } else {
 763                         InsetMath * p = i1.asInsetMath();
 764                         InsetBase::row_type r1, r2;
 765                         InsetBase::col_type c1, c2;
 766                         region(i1, i2, r1, r2, c1, c2);
 767                         for (InsetBase::row_type row = r1; row <= r2; ++row)
 768                                 for (InsetBase::col_type col = c1; col <= c2; ++col)
 769                                         p->cell(p->index(row, col)).clear();
 770                         // We've deleted the whole cell. Only pos 0 is valid.
 771                         cur.pos() = 0;
 772                 }
 773                 // need a valid cursor. (Lgb)
 774                 cur.clearSelection();
 775                 theSelection().haveSelection(false);
 776         } else {
 777                 lyxerr << "can't erase this selection 1" << endl;
 778         }
 779         //lyxerr << "cap::eraseSelection end: " << cur << endl;
 780 }
 781
 782
 783 void selDel(LCursor & cur)
 784 {
 785         //lyxerr << "cap::selDel" << endl;
 786         if (cur.selection())
 787                 eraseSelection(cur);
 788 }
 789
 790
 791 void selClearOrDel(LCursor & cur)
 792 {
 793         //lyxerr << "cap::selClearOrDel" << endl;
 794         if (lyxrc.auto_region_delete)
 795                 selDel(cur);
 796         else
 797                 cur.selection() = false;
 798 }
 799
 800
 801 docstring grabSelection(LCursor const & cur)
 802 {
 803         if (!cur.selection())
 804                 return docstring();
 805
 806         // FIXME: What is wrong with the following?
 807 #if 0
 808         std::ostringstream os;
 809         for (DocIterator dit = cur.selectionBegin();
 810              dit != cur.selectionEnd(); dit.forwardPos())
 811                 os << asString(dit.cell());
 812         return os.str();
 813 #endif
 814
 815         CursorSlice i1 = cur.selBegin();
 816         CursorSlice i2 = cur.selEnd();
 817
 818         if (i1.idx() == i2.idx()) {
 819                 if (i1.inset().asInsetMath()) {
 820                         MathArray::const_iterator it = i1.cell().begin();
 821                         return asString(MathArray(it + i1.pos(), it + i2.pos()));
 822                 } else {
 823                         return from_ascii("unknown selection 1");
 824                 }
 825         }
 826
 827         InsetBase::row_type r1, r2;
 828         InsetBase::col_type c1, c2;
 829         region(i1, i2, r1, r2, c1, c2);
 830
 831         docstring data;
 832         if (i1.inset().asInsetMath()) {
 833                 for (InsetBase::row_type row = r1; row <= r2; ++row) {
 834                         if (row > r1)
 835                                 data += "\\\\";
 836                         for (InsetBase::col_type col = c1; col <= c2; ++col) {
 837                                 if (col > c1)
 838                                         data += '&';
 839                                 data += asString(i1.asInsetMath()->
 840                                         cell(i1.asInsetMath()->index(row, col)));
 841                         }
 842                 }
 843         } else {
 844                 data = from_ascii("unknown selection 2");
 845         }
 846         return data;
 847 }
 848
 849
 850 void dirtyTabularStack(bool b)
 851 {
 852         dirty_tabular_stack_ = b;
 853 }
 854
 855
 856 bool tabularStackDirty()
 857 {
 858         return dirty_tabular_stack_;
 859 }
 860
 861
 862 } // namespace cap
 863
 864 } // namespace lyx