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  *
  10  * Full author contact details are available in file CREDITS.
  11  */
  12
  13 #include <config.h>
  14
  15 #include "CutAndPaste.h"
  16
  17 #include "buffer.h"
  18 #include "buffer_funcs.h"
  19 #include "bufferparams.h"
  20 #include "cursor.h"
  21 #include "debug.h"
  22 #include "errorlist.h"
  23 #include "funcrequest.h"
  24 #include "gettext.h"
  25 #include "insetiterator.h"
  26 #include "language.h"
  27 #include "lfuns.h"
  28 #include "lyxrc.h"
  29 #include "lyxtext.h"
  30 #include "lyxtextclasslist.h"
  31 #include "paragraph.h"
  32 #include "paragraph_funcs.h"
  33 #include "ParagraphParameters.h"
  34 #include "ParagraphList_fwd.h"
  35 #include "pariterator.h"
  36 #include "undo.h"
  37
  38 #include "insets/insetcharstyle.h"
  39 #include "insets/insettabular.h"
  40
  41 #include "mathed/MathData.h"
  42 #include "mathed/InsetMath.h"
  43 #include "mathed/MathSupport.h"
  44
  45 #include "support/lstrings.h"
  46
  47 #include "frontends/Clipboard.h"
  48
  49 #include <boost/tuple/tuple.hpp>
  50
  51 using lyx::docstring;
  52 using lyx::pos_type;
  53 using lyx::pit_type;
  54 using lyx::textclass_type;
  55
  56 using lyx::support::bformat;
  57
  58 using lyx::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<lyx::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_;
  80
  81 class resetParagraph : public std::unary_function<Paragraph, Buffer const &> {
  82 public:
  83         resetParagraph(Buffer const & b) : buffer_(b) {}
  84         void operator()(Paragraph & p) const {
  85                 // FIXME: change tracking (MG)
  86                 // set p's text to INSERTED in CT mode; clear CT info otherwise
  87
  88                 // ERT paragraphs have the Language latex_language.
  89                 // This is invalid outside of ERT, so we need to change it
  90                 // to the buffer language.
  91                 if (p.ownerCode() == InsetBase::ERT_CODE) {
  92                         p.changeLanguage(buffer_.params(), latex_language,
  93                                          buffer_.getLanguage());
  94                 }
  95                 p.setInsetOwner(0);
  96         }
  97 private:
  98         Buffer const & buffer_;
  99 };
 100
 101
 102 void region(CursorSlice const & i1, CursorSlice const & i2,
 103         InsetBase::row_type & r1, InsetBase::row_type & r2,
 104         InsetBase::col_type & c1, InsetBase::col_type & c2)
 105 {
 106         InsetBase & p = i1.inset();
 107         c1 = p.col(i1.idx());
 108         c2 = p.col(i2.idx());
 109         if (c1 > c2)
 110                 std::swap(c1, c2);
 111         r1 = p.row(i1.idx());
 112         r2 = p.row(i2.idx());
 113         if (r1 > r2)
 114                 std::swap(r1, r2);
 115 }
 116
 117
 118 bool checkPastePossible(int index)
 119 {
 120         return size_t(index) < theCuts.size() && !theCuts[index].first.empty();
 121 }
 122
 123
 124 pair<PitPosPair, pit_type>
 125 pasteSelectionHelper(LCursor & cur, ParagraphList const & parlist,
 126                      textclass_type textclass, ErrorList & errorlist)
 127 {
 128         Buffer const & buffer = cur.buffer();
 129         pit_type pit = cur.pit();
 130         pos_type pos = cur.pos();
 131         ParagraphList & pars = cur.text()->paragraphs();
 132
 133         if (parlist.empty())
 134                 return make_pair(PitPosPair(pit, pos), pit);
 135
 136         BOOST_ASSERT (pos <= pars[pit].size());
 137
 138         // Make a copy of the CaP paragraphs.
 139         ParagraphList insertion = parlist;
 140         textclass_type const tc = buffer.params().textclass;
 141
 142         // Now remove all out of the pars which is NOT allowed in the
 143         // new environment and set also another font if that is required.
 144
 145         // Convert newline to paragraph break in ERT inset.
 146         // This should not be here!
 147         if (pars[pit].inInset() &&
 148             pars[pit].inInset()->lyxCode() == InsetBase::ERT_CODE) {
 149                 for (ParagraphList::size_type i = 0; i < insertion.size(); ++i) {
 150                         for (pos_type j = 0; j < insertion[i].size(); ++j) {
 151                                 if (insertion[i].isNewline(j)) {
 152                                         // do not track deletion of newline
 153                                         insertion[i].erase(j, false);
 154                                         breakParagraphConservative(
 155                                                         buffer.params(),
 156                                                         insertion, i, j);
 157                                 }
 158                         }
 159                 }
 160         }
 161
 162         // If we are in an inset which returns forceDefaultParagraphs,
 163         // set the paragraphs to default
 164         if (cur.inset().forceDefaultParagraphs(cur.idx())) {
 165                 LyXLayout_ptr const layout =
 166                         buffer.params().getLyXTextClass().defaultLayout();
 167                 ParagraphList::iterator const end = insertion.end();
 168                 for (ParagraphList::iterator par = insertion.begin();
 169                                 par != end; ++par)
 170                         par->layout(layout);
 171         }
 172
 173         // Make sure there is no class difference.
 174         InsetText in;
 175         // This works without copying any paragraph data because we have
 176         // a specialized swap method for ParagraphList. This is important
 177         // since we store pointers to insets at some places and we don't
 178         // want to invalidate them.
 179         insertion.swap(in.paragraphs());
 180         lyx::cap::switchBetweenClasses(textclass, tc, in, errorlist);
 181         insertion.swap(in.paragraphs());
 182
 183         ParagraphList::iterator tmpbuf = insertion.begin();
 184         int depth_delta = pars[pit].params().depth() - tmpbuf->params().depth();
 185
 186         Paragraph::depth_type max_depth = pars[pit].getMaxDepthAfter();
 187
 188         for (; tmpbuf != insertion.end(); ++tmpbuf) {
 189                 // If we have a negative jump so that the depth would
 190                 // go below 0 depth then we have to redo the delta to
 191                 // this new max depth level so that subsequent
 192                 // paragraphs are aligned correctly to this paragraph
 193                 // at level 0.
 194                 if (int(tmpbuf->params().depth()) + depth_delta < 0)
 195                         depth_delta = 0;
 196
 197                 // Set the right depth so that we are not too deep or shallow.
 198                 tmpbuf->params().depth(tmpbuf->params().depth() + depth_delta);
 199                 if (tmpbuf->params().depth() > max_depth)
 200                         tmpbuf->params().depth(max_depth);
 201
 202                 // Only set this from the 2nd on as the 2nd depends
 203                 // for maxDepth still on pit.
 204                 if (tmpbuf != insertion.begin())
 205                         max_depth = tmpbuf->getMaxDepthAfter();
 206
 207                 // Set the inset owner of this paragraph.
 208                 tmpbuf->setInsetOwner(pars[pit].inInset());
 209                 for (pos_type i = 0; i < tmpbuf->size(); ++i) {
 210                         if (tmpbuf->getChar(i) == Paragraph::META_INSET &&
 211                             !pars[pit].insetAllowed(tmpbuf->getInset(i)->lyxCode()))
 212                                 // do not track deletion of invalid insets
 213                                 tmpbuf->erase(i--, false);
 214                 }
 215
 216                 // FIXME: Change tracking (MG)
 217                 // set tmpbuf's text to INSERTED in CT mode; clear CT info otherwise
 218         }
 219
 220         bool const empty = pars[pit].empty();
 221         if (!empty) {
 222                 // Make the buf exactly the same layout as the cursor
 223                 // paragraph.
 224                 insertion.begin()->makeSameLayout(pars[pit]);
 225         }
 226
 227         // Prepare the paragraphs and insets for insertion.
 228         // A couple of insets store buffer references so need updating.
 229         insertion.swap(in.paragraphs());
 230
 231         ParIterator fpit = par_iterator_begin(in);
 232         ParIterator fend = par_iterator_end(in);
 233
 234         for (; fpit != fend; ++fpit) {
 235                 InsetList::iterator lit = fpit->insetlist.begin();
 236                 InsetList::iterator eit = fpit->insetlist.end();
 237
 238                 for (; lit != eit; ++lit) {
 239                         switch (lit->inset->lyxCode()) {
 240                         case InsetBase::TABULAR_CODE: {
 241                                 InsetTabular * it = static_cast<InsetTabular*>(lit->inset);
 242                                 it->buffer(&buffer);
 243                                 break;
 244                         }
 245
 246                         default:
 247                                 break; // nothing
 248                         }
 249                 }
 250         }
 251         insertion.swap(in.paragraphs());
 252
 253         // Split the paragraph for inserting the buf if necessary.
 254         if (!empty)
 255                 breakParagraphConservative(buffer.params(), pars, pit, pos);
 256
 257         // Paste it!
 258         if (empty) {
 259                 pars.insert(boost::next(pars.begin(), pit),
 260                             insertion.begin(),
 261                             insertion.end());
 262
 263                 // merge the empty par with the last par of the insertion
 264                 mergeParagraph(buffer.params(), pars,
 265                                pit + insertion.size() - 1);
 266         } else {
 267                 pars.insert(boost::next(pars.begin(), pit + 1),
 268                             insertion.begin(),
 269                             insertion.end());
 270
 271                 // merge the first par of the insertion with the current par
 272                 mergeParagraph(buffer.params(), pars, pit);
 273         }
 274
 275         pit_type last_paste = pit + insertion.size() - 1;
 276
 277         // Store the new cursor position.
 278         pit = last_paste;
 279         pos = pars[last_paste].size();
 280
 281         // Join (conditionally) last pasted paragraph with next one, i.e.,
 282         // the tail of the spliced document paragraph
 283         if (!empty && last_paste + 1 != pit_type(pars.size())) {
 284                 if (pars[last_paste + 1].hasSameLayout(pars[last_paste])) {
 285                         mergeParagraph(buffer.params(), pars, last_paste);
 286                 } else if (pars[last_paste + 1].empty()) {
 287                         pars[last_paste + 1].makeSameLayout(pars[last_paste]);
 288                         mergeParagraph(buffer.params(), pars, last_paste);
 289                 } else if (pars[last_paste].empty()) {
 290                         pars[last_paste].makeSameLayout(pars[last_paste + 1]);
 291                         mergeParagraph(buffer.params(), pars, last_paste);
 292                 } else {
 293                         pars[last_paste + 1].stripLeadingSpaces();
 294                         ++last_paste;
 295                 }
 296         }
 297
 298         return make_pair(PitPosPair(pit, pos), last_paste + 1);
 299 }
 300
 301
 302 PitPosPair eraseSelectionHelper(BufferParams const & params,
 303         ParagraphList & pars,
 304         pit_type startpit, pit_type endpit,
 305         int startpos, int endpos, bool doclear)
 306 {
 307         // Start of selection is really invalid.
 308         if (startpit == pit_type(pars.size()) ||
 309             (startpos > pars[startpit].size()))
 310                 return PitPosPair(endpit, endpos);
 311
 312         // Start and end is inside same paragraph
 313         if (endpit == pit_type(pars.size()) ||
 314             startpit == endpit) {
 315                 endpos -= pars[startpit].erase(startpos, endpos);
 316                 return PitPosPair(endpit, endpos);
 317         }
 318
 319         // A paragraph break has to be physically removed by merging, but
 320         // only if either (1) change tracking is off, or (2) the para break
 321         // is "blue"
 322         for (pit_type pit = startpit; pit != endpit + 1;) {
 323                 // FIXME: Change tracking (MG)
 324                 bool const merge = !params.trackChanges ||
 325                         pars[pit].lookupChange(pars[pit].size()) ==
 326                         Change(Change::INSERTED);
 327                 pos_type const left  = ( pit == startpit ? startpos : 0 );
 328                 pos_type const right = ( pit == endpit ? endpos :
 329                                 pars[pit].size() + 1 );
 330                 // Logical erase only:
 331                 pars[pit].erase(left, right);
 332                 // Separate handling of para break:
 333                 if (merge && pit != endpit &&
 334                    (pit + 1 != endpit || pars[pit].hasSameLayout(pars[pit + 1]))) {
 335                         pos_type const thissize = pars[pit].size();
 336                         if (doclear)
 337                                 pars[pit + 1].stripLeadingSpaces();
 338                         mergeParagraph(params, pars, pit);
 339                         --endpit;
 340                         if (pit == endpit)
 341                                 endpos += thissize;
 342                 } else
 343                         ++pit;
 344         }
 345
 346         // Ensure legal cursor pos:
 347         endpit = startpit;
 348         endpos = startpos;
 349         return PitPosPair(endpit, endpos);
 350 }
 351
 352
 353 void copySelectionHelper(Buffer const & buf, ParagraphList & pars,
 354         pit_type startpit, pit_type endpit,
 355         int start, int end, textclass_type tc)
 356 {
 357         BOOST_ASSERT(0 <= start && start <= pars[startpit].size());
 358         BOOST_ASSERT(0 <= end && end <= pars[endpit].size());
 359         BOOST_ASSERT(startpit != endpit || start <= end);
 360
 361         // Clone the paragraphs within the selection.
 362         ParagraphList paragraphs(boost::next(pars.begin(), startpit),
 363                                  boost::next(pars.begin(), endpit + 1));
 364
 365         for_each(paragraphs.begin(), paragraphs.end(), resetParagraph(buf));
 366
 367         // Cut out the end of the last paragraph.
 368         Paragraph & back = paragraphs.back();
 369         back.erase(end, back.size());
 370
 371         // Cut out the begin of the first paragraph
 372         Paragraph & front = paragraphs.front();
 373         front.erase(0, start);
 374
 375         theCuts.push(make_pair(paragraphs, tc));
 376 }
 377
 378 } // namespace anon
 379
 380
 381
 382
 383 namespace lyx {
 384 namespace cap {
 385
 386 string grabAndEraseSelection(LCursor & cur)
 387 {
 388         if (!cur.selection())
 389                 return string();
 390         string res = grabSelection(cur);
 391         eraseSelection(cur);
 392         return res;
 393 }
 394
 395
 396 void switchBetweenClasses(textclass_type c1, textclass_type c2,
 397         InsetText & in, ErrorList & errorlist)
 398 {
 399         BOOST_ASSERT(!in.paragraphs().empty());
 400         if (c1 == c2)
 401                 return;
 402
 403         LyXTextClass const & tclass1 = textclasslist[c1];
 404         LyXTextClass const & tclass2 = textclasslist[c2];
 405
 406         // layouts
 407         ParIterator end = par_iterator_end(in);
 408         for (ParIterator it = par_iterator_begin(in); it != end; ++it) {
 409                 string const name = it->layout()->name();
 410                 bool hasLayout = tclass2.hasLayout(name);
 411
 412                 if (hasLayout)
 413                         it->layout(tclass2[name]);
 414                 else
 415                         it->layout(tclass2.defaultLayout());
 416
 417                 if (!hasLayout && name != tclass1.defaultLayoutName()) {
 418                         docstring const s = bformat(
 419                                                  _("Layout had to be changed from\n%1$s to %2$s\n"
 420                                                 "because of class conversion from\n%3$s to %4$s"),
 421                          lyx::from_utf8(name), lyx::from_utf8(it->layout()->name()),
 422                          lyx::from_utf8(tclass1.name()), lyx::from_utf8(tclass2.name()));
 423                         // To warn the user that something had to be done.
 424                         errorlist.push_back(ErrorItem(_("Changed Layout"), s,
 425                                                       it->id(), 0,
 426                                                       it->size()));
 427                 }
 428         }
 429
 430         // character styles
 431         InsetIterator const i_end = inset_iterator_end(in);
 432         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 433                 if (it->lyxCode() == InsetBase::CHARSTYLE_CODE) {
 434                         InsetCharStyle & inset =
 435                                 static_cast<InsetCharStyle &>(*it);
 436                         string const name = inset.params().type;
 437                         CharStyles::iterator const found_cs =
 438                                 tclass2.charstyle(name);
 439                         if (found_cs == tclass2.charstyles().end()) {
 440                                 // The character style is undefined in tclass2
 441                                 inset.setUndefined();
 442                                 docstring const s = bformat(_(
 443                                         "Character style %1$s is "
 444                                         "undefined because of class "
 445                                         "conversion from\n%2$s to %3$s"),
 446                                          lyx::from_utf8(name), lyx::from_utf8(tclass1.name()),
 447                                          lyx::from_utf8(tclass2.name()));
 448                                 // To warn the user that something had to be done.
 449                                 errorlist.push_back(ErrorItem(
 450                                         _("Undefined character style"),
 451                                         s, it.paragraph().id(), it.pos(), it.pos() + 1));
 452                         } else if (inset.undefined()) {
 453                                 // The character style is undefined in
 454                                 // tclass1 and is defined in tclass2
 455                                 inset.setDefined(found_cs);
 456                         }
 457                 }
 458         }
 459 }
 460
 461
 462 std::vector<docstring> const availableSelections(Buffer const & buffer)
 463 {
 464         vector<docstring> selList;
 465
 466         CutStack::const_iterator cit = theCuts.begin();
 467         CutStack::const_iterator end = theCuts.end();
 468         for (; cit != end; ++cit) {
 469                 // we do not use cit-> here because gcc 2.9x does not
 470                 // like it (JMarc)
 471                 ParagraphList const & pars = (*cit).first;
 472                 docstring asciiSel;
 473                 ParagraphList::const_iterator pit = pars.begin();
 474                 ParagraphList::const_iterator pend = pars.end();
 475                 for (; pit != pend; ++pit) {
 476                         asciiSel += pit->asString(buffer, false);
 477                         if (asciiSel.size() > 25) {
 478                                 asciiSel.replace(22, docstring::npos,
 479                                                  lyx::from_ascii("..."));
 480                                 break;
 481                         }
 482                 }
 483
 484                 selList.push_back(asciiSel);
 485         }
 486
 487         return selList;
 488 }
 489
 490
 491 lyx::size_type numberOfSelections()
 492 {
 493         return theCuts.size();
 494 }
 495
 496
 497 void cutSelection(LCursor & cur, bool doclear, bool realcut)
 498 {
 499         // This doesn't make sense, if there is no selection
 500         if (!cur.selection())
 501                 return;
 502
 503         // OK, we have a selection. This is always between cur.selBegin()
 504         // and cur.selEnd()
 505
 506         if (cur.inTexted()) {
 507                 LyXText * text = cur.text();
 508                 BOOST_ASSERT(text);
 509                 // Stuff what we got on the clipboard. Even if there is no selection.
 510
 511                 // There is a problem with having the stuffing here in that the
 512                 // larger the selection the slower LyX will get. This can be
 513                 // solved by running the line below only when the selection has
 514                 // finished. The solution used currently just works, to make it
 515                 // faster we need to be more clever and probably also have more
 516                 // calls to theSelection().put. (Lgb)
 517 //              theSelection().put(cur.selectionAsString(true));
 518
 519
 520                 // make sure that the depth behind the selection are restored, too
 521                 recordUndoSelection(cur);
 522                 pit_type begpit = cur.selBegin().pit();
 523                 pit_type endpit = cur.selEnd().pit();
 524
 525                 int endpos = cur.selEnd().pos();
 526
 527                 BufferParams const & bp = cur.buffer().params();
 528                 if (realcut) {
 529                         copySelectionHelper(cur.buffer(),
 530                                 text->paragraphs(),
 531                                 begpit, endpit,
 532                                 cur.selBegin().pos(), endpos,
 533                                 bp.textclass);
 534                 }
 535
 536                 boost::tie(endpit, endpos) =
 537                         eraseSelectionHelper(bp,
 538                                 text->paragraphs(),
 539                                 begpit, endpit,
 540                                 cur.selBegin().pos(), endpos,
 541                                 doclear);
 542
 543                 // sometimes necessary
 544                 if (doclear)
 545                         text->paragraphs()[begpit].stripLeadingSpaces();
 546
 547                 // cutSelection can invalidate the cursor so we need to set
 548                 // it anew. (Lgb)
 549                 // we prefer the end for when tracking changes
 550                 cur.pos() = endpos;
 551                 cur.pit() = endpit;
 552
 553                 // need a valid cursor. (Lgb)
 554                 cur.clearSelection();
 555                 updateLabels(cur.buffer());
 556
 557                 // tell tabular that a recent copy happened
 558                 dirtyTabularStack(false);
 559         }
 560
 561         if (cur.inMathed()) {
 562                 if (cur.selBegin().idx() != cur.selEnd().idx()) {
 563                         // The current selection spans more than one cell.
 564                         // Record all cells
 565                         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         // stuff the selection onto the X clipboard, from an explicit copy request
 581         theClipboard().put(cur.selectionAsString(true));
 582
 583         // this doesn't make sense, if there is no selection
 584         if (!cur.selection())
 585                 return;
 586
 587         if (cur.inTexted()) {
 588                 LyXText * text = cur.text();
 589                 BOOST_ASSERT(text);
 590                 // ok we have a selection. This is always between cur.selBegin()
 591                 // and sel_end cursor
 592
 593                 // copy behind a space if there is one
 594                 ParagraphList & pars = text->paragraphs();
 595                 pos_type pos = cur.selBegin().pos();
 596                 pit_type par = cur.selBegin().pit();
 597                 while (pos < pars[par].size()
 598                                          && pars[par].isLineSeparator(pos)
 599                                          && (par != cur.selEnd().pit() || pos < cur.selEnd().pos()))
 600                         ++pos;
 601
 602                 copySelectionHelper(cur.buffer(), pars, par, cur.selEnd().pit(),
 603                         pos, cur.selEnd().pos(), cur.buffer().params().textclass);
 604         }
 605
 606         if (cur.inMathed()) {
 607                 //lyxerr << "copySelection in mathed" << endl;
 608                 ParagraphList pars;
 609                 pars.push_back(Paragraph());
 610                 BufferParams const & bp = cur.buffer().params();
 611                 pars.back().layout(bp.getLyXTextClass().defaultLayout());
 612                 for_each(pars.begin(), pars.end(), resetParagraph(cur.buffer()));
 613                 // FIXME: change tracking (MG)
 614                 pars.back().insert(0, grabSelection(cur), LyXFont(), Change(Change::UNCHANGED));
 615                 theCuts.push(make_pair(pars, bp.textclass));
 616         }
 617         // tell tabular that a recent copy happened
 618         dirtyTabularStack(false);
 619 }
 620
 621
 622 docstring getSelection(Buffer const & buf, size_t sel_index)
 623 {
 624         return sel_index < theCuts.size()
 625                 ? theCuts[sel_index].first.back().asString(buf, false)
 626                 : docstring();
 627 }
 628
 629
 630 void pasteParagraphList(LCursor & cur, ParagraphList const & parlist,
 631                         textclass_type textclass, ErrorList & errorList)
 632 {
 633         if (cur.inTexted()) {
 634                 LyXText * text = cur.text();
 635                 BOOST_ASSERT(text);
 636
 637                 recordUndo(cur);
 638
 639                 pit_type endpit;
 640                 PitPosPair ppp;
 641
 642                 boost::tie(ppp, endpit) =
 643                         pasteSelectionHelper(cur, parlist,
 644                                              textclass, errorList);
 645                 updateLabels(cur.buffer());
 646                 cur.clearSelection();
 647                 text->setCursor(cur, ppp.first, ppp.second);
 648         }
 649
 650         // mathed is handled in InsetMathNest/InsetMathGrid
 651         BOOST_ASSERT(!cur.inMathed());
 652 }
 653
 654
 655 void pasteSelection(LCursor & cur, ErrorList & errorList, size_t sel_index)
 656 {
 657         // this does not make sense, if there is nothing to paste
 658         if (!checkPastePossible(sel_index))
 659                 return;
 660
 661         pasteParagraphList(cur, theCuts[sel_index].first,
 662                            theCuts[sel_index].second, errorList);
 663         cur.setSelection();
 664 }
 665
 666
 667 // simple replacing. The font of the first selected character is used
 668 void replaceSelectionWithString(LCursor & cur, string const & str, bool backwards)
 669 {
 670         recordUndo(cur);
 671         DocIterator selbeg = cur.selectionBegin();
 672
 673         // Get font setting before we cut
 674         LyXFont const font =
 675                 selbeg.paragraph().getFontSettings(cur.buffer().params(), selbeg.pos());
 676
 677         // Insert the new string
 678         pos_type pos = cur.selEnd().pos();
 679         Paragraph & par = cur.selEnd().paragraph();
 680         string::const_iterator cit = str.begin();
 681         string::const_iterator end = str.end();
 682         for (; cit != end; ++cit, ++pos)
 683                 par.insertChar(pos, (*cit), font, cur.buffer().params().trackChanges);
 684
 685         // Cut the selection
 686         cutSelection(cur, true, false);
 687
 688         // select the replacement
 689         if (backwards) {
 690                 selbeg.pos() += str.length();
 691                 cur.setSelection(selbeg, -str.length());
 692         } else
 693                 cur.setSelection(selbeg, str.length());
 694 }
 695
 696
 697 void replaceSelection(LCursor & cur)
 698 {
 699         if (cur.selection())
 700                 cutSelection(cur, true, false);
 701 }
 702
 703
 704 void eraseSelection(LCursor & cur)
 705 {
 706         //lyxerr << "LCursor::eraseSelection begin: " << cur << endl;
 707         CursorSlice const & i1 = cur.selBegin();
 708         CursorSlice const & i2 = cur.selEnd();
 709         if (i1.inset().asInsetMath()) {
 710                 cur.top() = i1;
 711                 if (i1.idx() == i2.idx()) {
 712                         i1.cell().erase(i1.pos(), i2.pos());
 713                         // We may have deleted i1.cell(cur.pos()).
 714                         // Make sure that pos is valid.
 715                         if (cur.pos() > cur.lastpos())
 716                                 cur.pos() = cur.lastpos();
 717                 } else {
 718                         InsetMath * p = i1.asInsetMath();
 719                         InsetBase::row_type r1, r2;
 720                         InsetBase::col_type c1, c2;
 721                         region(i1, i2, r1, r2, c1, c2);
 722                         for (InsetBase::row_type row = r1; row <= r2; ++row)
 723                                 for (InsetBase::col_type col = c1; col <= c2; ++col)
 724                                         p->cell(p->index(row, col)).clear();
 725                         // We've deleted the whole cell. Only pos 0 is valid.
 726                         cur.pos() = 0;
 727                 }
 728                 // need a valid cursor. (Lgb)
 729                 cur.clearSelection();
 730         } else {
 731                 lyxerr << "can't erase this selection 1" << endl;
 732         }
 733         //lyxerr << "LCursor::eraseSelection end: " << cur << endl;
 734 }
 735
 736
 737 void selDel(LCursor & cur)
 738 {
 739         //lyxerr << "LCursor::selDel" << endl;
 740         if (cur.selection())
 741                 eraseSelection(cur);
 742 }
 743
 744
 745 void selClearOrDel(LCursor & cur)
 746 {
 747         //lyxerr << "LCursor::selClearOrDel" << endl;
 748         if (lyxrc.auto_region_delete)
 749                 selDel(cur);
 750         else
 751                 cur.selection() = false;
 752 }
 753
 754
 755 string grabSelection(LCursor const & cur)
 756 {
 757         if (!cur.selection())
 758                 return string();
 759
 760         // FIXME: What is wrong with the following?
 761 #if 0
 762         std::ostringstream os;
 763         for (DocIterator dit = cur.selectionBegin();
 764              dit != cur.selectionEnd(); dit.forwardPos())
 765                 os << asString(dit.cell());
 766         return os.str();
 767 #endif
 768
 769         CursorSlice i1 = cur.selBegin();
 770         CursorSlice i2 = cur.selEnd();
 771
 772         if (i1.idx() == i2.idx()) {
 773                 if (i1.inset().asInsetMath()) {
 774                         MathArray::const_iterator it = i1.cell().begin();
 775                         return asString(MathArray(it + i1.pos(), it + i2.pos()));
 776                 } else {
 777                         return "unknown selection 1";
 778                 }
 779         }
 780
 781         InsetBase::row_type r1, r2;
 782         InsetBase::col_type c1, c2;
 783         region(i1, i2, r1, r2, c1, c2);
 784
 785         string data;
 786         if (i1.inset().asInsetMath()) {
 787                 for (InsetBase::row_type row = r1; row <= r2; ++row) {
 788                         if (row > r1)
 789                                 data += "\\\\";
 790                         for (InsetBase::col_type col = c1; col <= c2; ++col) {
 791                                 if (col > c1)
 792                                         data += '&';
 793                                 data += asString(i1.asInsetMath()->
 794                                         cell(i1.asInsetMath()->index(row, col)));
 795                         }
 796                 }
 797         } else {
 798                 data = "unknown selection 2";
 799         }
 800         return data;
 801 }
 802
 803
 804 void dirtyTabularStack(bool b)
 805 {
 806         dirty_tabular_stack_ = b;
 807 }
 808
 809
 810 bool tabularStackDirty()
 811 {
 812         return dirty_tabular_stack_;
 813 }
 814
 815
 816 } // namespace cap
 817 } // namespace lyx