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 "BufferView.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 "lyxrc.h"
  30 #include "lyxtext.h"
  31 #include "lyxtextclasslist.h"
  32 #include "paragraph.h"
  33 #include "paragraph_funcs.h"
  34 #include "ParagraphParameters.h"
  35 #include "ParagraphList_fwd.h"
  36 #include "pariterator.h"
  37 #include "undo.h"
  38
  39 #include "insets/insetcharstyle.h"
  40 #include "insets/insettabular.h"
  41
  42 #include "mathed/MathData.h"
  43 #include "mathed/InsetMath.h"
  44 #include "mathed/MathSupport.h"
  45
  46 #include "support/lstrings.h"
  47
  48 #include "frontends/LyXView.h"
  49 #include "frontends/Clipboard.h"
  50
  51 #include <boost/tuple/tuple.hpp>
  52
  53 using lyx::pos_type;
  54 using lyx::pit_type;
  55 using lyx::textclass_type;
  56
  57 using lyx::support::bformat;
  58
  59 using lyx::frontend::Clipboard;
  60
  61 using std::endl;
  62 using std::for_each;
  63 using std::make_pair;
  64 using std::pair;
  65 using std::vector;
  66 using std::string;
  67
  68
  69 namespace {
  70
  71 typedef std::pair<lyx::pit_type, int> PitPosPair;
  72
  73 typedef limited_stack<pair<ParagraphList, textclass_type> > CutStack;
  74
  75 CutStack theCuts(10);
  76
  77 // store whether the tabular stack is newer than the normal copy stack
  78 // FIXME: this is a workaround for bug 1919. Should be removed for 1.5,
  79 // when we (hopefully) have a one-for-all paste mechanism.
  80 bool dirty_tabular_stack_;
  81
  82 class resetParagraph : public std::unary_function<Paragraph, Buffer const &> {
  83 public:
  84         resetParagraph(Buffer const & b) : buffer_(b) {}
  85         void operator()(Paragraph & p) const {
  86                 p.cleanChanges();
  87                 // ERT paragraphs have the Language latex_language.
  88                 // This is invalid outside of ERT, so we need to change it
  89                 // to the buffer language.
  90                 if (p.ownerCode() == InsetBase::ERT_CODE) {
  91                         p.changeLanguage(buffer_.params(), latex_language,
  92                                          buffer_.getLanguage());
  93                 }
  94                 p.setInsetOwner(0);
  95         }
  96 private:
  97         Buffer const & buffer_;
  98 };
  99
 100
 101 void region(CursorSlice const & i1, CursorSlice const & i2,
 102         InsetBase::row_type & r1, InsetBase::row_type & r2,
 103         InsetBase::col_type & c1, InsetBase::col_type & c2)
 104 {
 105         InsetBase & p = i1.inset();
 106         c1 = p.col(i1.idx());
 107         c2 = p.col(i2.idx());
 108         if (c1 > c2)
 109                 std::swap(c1, c2);
 110         r1 = p.row(i1.idx());
 111         r2 = p.row(i2.idx());
 112         if (r1 > r2)
 113                 std::swap(r1, r2);
 114 }
 115
 116
 117 bool checkPastePossible(int index)
 118 {
 119         return size_t(index) < theCuts.size() && !theCuts[index].first.empty();
 120 }
 121
 122
 123 pair<PitPosPair, pit_type>
 124 pasteSelectionHelper(LCursor & cur, ParagraphList const & parlist,
 125                      textclass_type textclass, ErrorList & errorlist)
 126 {
 127         Buffer const & buffer = cur.buffer();
 128         pit_type pit = cur.pit();
 129         pos_type pos = cur.pos();
 130         ParagraphList & pars = cur.text()->paragraphs();
 131
 132         if (parlist.empty())
 133                 return make_pair(PitPosPair(pit, pos), pit);
 134
 135         BOOST_ASSERT (pos <= pars[pit].size());
 136
 137         // Make a copy of the CaP paragraphs.
 138         ParagraphList insertion = parlist;
 139         textclass_type const tc = buffer.params().textclass;
 140
 141         // Now remove all out of the pars which is NOT allowed in the
 142         // new environment and set also another font if that is required.
 143
 144         // Convert newline to paragraph break in ERT inset.
 145         // This should not be here!
 146         if (pars[pit].inInset() &&
 147             pars[pit].inInset()->lyxCode() == InsetBase::ERT_CODE) {
 148                 for (ParagraphList::size_type i = 0; i < insertion.size(); ++i) {
 149                         for (pos_type j = 0; j < insertion[i].size(); ++j) {
 150                                 if (insertion[i].isNewline(j)) {
 151                                         insertion[i].erase(j);
 152                                         breakParagraphConservative(
 153                                                         buffer.params(),
 154                                                         insertion, i, j);
 155                                 }
 156                         }
 157                 }
 158         }
 159
 160         // If we are in an inset which returns forceDefaultParagraphs,
 161         // set the paragraphs to default
 162         if (cur.inset().forceDefaultParagraphs(cur.idx())) {
 163                 LyXLayout_ptr const layout =
 164                         buffer.params().getLyXTextClass().defaultLayout();
 165                 ParagraphList::iterator const end = insertion.end();
 166                 for (ParagraphList::iterator par = insertion.begin();
 167                                 par != end; ++par)
 168                         par->layout(layout);
 169         }
 170
 171         // Make sure there is no class difference.
 172         InsetText in;
 173         // This works without copying any paragraph data because we have
 174         // a specialized swap method for ParagraphList. This is important
 175         // since we store pointers to insets at some places and we don't
 176         // want to invalidate them.
 177         insertion.swap(in.paragraphs());
 178         lyx::cap::switchBetweenClasses(textclass, tc, in, errorlist);
 179         insertion.swap(in.paragraphs());
 180
 181         ParagraphList::iterator tmpbuf = insertion.begin();
 182         int depth_delta = pars[pit].params().depth() - tmpbuf->params().depth();
 183
 184         Paragraph::depth_type max_depth = pars[pit].getMaxDepthAfter();
 185
 186         for (; tmpbuf != insertion.end(); ++tmpbuf) {
 187                 // If we have a negative jump so that the depth would
 188                 // go below 0 depth then we have to redo the delta to
 189                 // this new max depth level so that subsequent
 190                 // paragraphs are aligned correctly to this paragraph
 191                 // at level 0.
 192                 if (int(tmpbuf->params().depth()) + depth_delta < 0)
 193                         depth_delta = 0;
 194
 195                 // Set the right depth so that we are not too deep or shallow.
 196                 tmpbuf->params().depth(tmpbuf->params().depth() + depth_delta);
 197                 if (tmpbuf->params().depth() > max_depth)
 198                         tmpbuf->params().depth(max_depth);
 199
 200                 // Only set this from the 2nd on as the 2nd depends
 201                 // for maxDepth still on pit.
 202                 if (tmpbuf != insertion.begin())
 203                         max_depth = tmpbuf->getMaxDepthAfter();
 204
 205                 // Set the inset owner of this paragraph.
 206                 tmpbuf->setInsetOwner(pars[pit].inInset());
 207                 for (pos_type i = 0; i < tmpbuf->size(); ++i) {
 208                         if (tmpbuf->getChar(i) == Paragraph::META_INSET &&
 209                             !pars[pit].insetAllowed(tmpbuf->getInset(i)->lyxCode()))
 210                                 tmpbuf->erase(i--);
 211                 }
 212
 213                 // reset change tracking status
 214                 if (buffer.params().tracking_changes)
 215                         tmpbuf->cleanChanges(Paragraph::trackingOn);
 216                 else
 217                         tmpbuf->cleanChanges(Paragraph::trackingOff);
 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                 bool const merge = !params.tracking_changes ||
 324                         pars[pit].lookupChange(pars[pit].size()) ==
 325                         Change::INSERTED;
 326                 pos_type const left  = ( pit == startpit ? startpos : 0 );
 327                 pos_type const right = ( pit == endpit ? endpos :
 328                                 pars[pit].size() + 1 );
 329                 // Logical erase only:
 330                 pars[pit].erase(left, right);
 331                 // Separate handling of para break:
 332                 if (merge && pit != endpit &&
 333                    (pit + 1 != endpit || pars[pit].hasSameLayout(pars[pit + 1]))) {
 334                         pos_type const thissize = pars[pit].size();
 335                         if (doclear)
 336                                 pars[pit + 1].stripLeadingSpaces();
 337                         mergeParagraph(params, pars, pit);
 338                         --endpit;
 339                         if (pit == endpit)
 340                                 endpos += thissize;
 341                 } else
 342                         ++pit;
 343         }
 344
 345         // Ensure legal cursor pos:
 346         endpit = startpit;
 347         endpos = startpos;
 348         return PitPosPair(endpit, endpos);
 349 }
 350
 351
 352 void copySelectionHelper(Buffer const & buf, ParagraphList & pars,
 353         pit_type startpit, pit_type endpit,
 354         int start, int end, textclass_type tc)
 355 {
 356         BOOST_ASSERT(0 <= start && start <= pars[startpit].size());
 357         BOOST_ASSERT(0 <= end && end <= pars[endpit].size());
 358         BOOST_ASSERT(startpit != endpit || start <= end);
 359
 360         // Clone the paragraphs within the selection.
 361         ParagraphList paragraphs(boost::next(pars.begin(), startpit),
 362                                  boost::next(pars.begin(), endpit + 1));
 363
 364         for_each(paragraphs.begin(), paragraphs.end(), resetParagraph(buf));
 365
 366         // Cut out the end of the last paragraph.
 367         Paragraph & back = paragraphs.back();
 368         back.erase(end, back.size());
 369
 370         // Cut out the begin of the first paragraph
 371         Paragraph & front = paragraphs.front();
 372         front.erase(0, start);
 373
 374         theCuts.push(make_pair(paragraphs, tc));
 375 }
 376
 377 } // namespace anon
 378
 379
 380
 381
 382 namespace lyx {
 383 namespace cap {
 384
 385 string grabAndEraseSelection(LCursor & cur)
 386 {
 387         if (!cur.selection())
 388                 return string();
 389         string res = grabSelection(cur);
 390         eraseSelection(cur);
 391         return res;
 392 }
 393
 394
 395 void switchBetweenClasses(textclass_type c1, textclass_type c2,
 396         InsetText & in, ErrorList & errorlist)
 397 {
 398         BOOST_ASSERT(!in.paragraphs().empty());
 399         if (c1 == c2)
 400                 return;
 401
 402         LyXTextClass const & tclass1 = textclasslist[c1];
 403         LyXTextClass const & tclass2 = textclasslist[c2];
 404
 405         // layouts
 406         ParIterator end = par_iterator_end(in);
 407         for (ParIterator it = par_iterator_begin(in); it != end; ++it) {
 408                 string const name = it->layout()->name();
 409                 bool hasLayout = tclass2.hasLayout(name);
 410
 411                 if (hasLayout)
 412                         it->layout(tclass2[name]);
 413                 else
 414                         it->layout(tclass2.defaultLayout());
 415
 416                 if (!hasLayout && name != tclass1.defaultLayoutName()) {
 417                         docstring const s = bformat(
 418                                                  _("Layout had to be changed from\n%1$s to %2$s\n"
 419                                                 "because of class conversion from\n%3$s to %4$s"),
 420                          lyx::from_utf8(name), lyx::from_utf8(it->layout()->name()),
 421                          lyx::from_utf8(tclass1.name()), lyx::from_utf8(tclass2.name()));
 422                         // To warn the user that something had to be done.
 423                         errorlist.push_back(ErrorItem(_("Changed Layout"), s,
 424                                                       it->id(), 0,
 425                                                       it->size()));
 426                 }
 427         }
 428
 429         // character styles
 430         InsetIterator const i_end = inset_iterator_end(in);
 431         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 432                 if (it->lyxCode() == InsetBase::CHARSTYLE_CODE) {
 433                         InsetCharStyle & inset =
 434                                 static_cast<InsetCharStyle &>(*it);
 435                         string const name = inset.params().type;
 436                         CharStyles::iterator const found_cs =
 437                                 tclass2.charstyle(name);
 438                         if (found_cs == tclass2.charstyles().end()) {
 439                                 // The character style is undefined in tclass2
 440                                 inset.setUndefined();
 441                                 docstring const s = bformat(_(
 442                                         "Character style %1$s is "
 443                                         "undefined because of class "
 444                                         "conversion from\n%2$s to %3$s"),
 445                                          lyx::from_utf8(name), lyx::from_utf8(tclass1.name()),
 446                                          lyx::from_utf8(tclass2.name()));
 447                                 // To warn the user that something had to be done.
 448                                 errorlist.push_back(ErrorItem(
 449                                         _("Undefined character style"),
 450                                         s, it.paragraph().id(), it.pos(), it.pos() + 1));
 451                         } else if (inset.undefined()) {
 452                                 // The character style is undefined in
 453                                 // tclass1 and is defined in tclass2
 454                                 inset.setDefined(found_cs);
 455                         }
 456                 }
 457         }
 458 }
 459
 460
 461 std::vector<string> const availableSelections(Buffer const & buffer)
 462 {
 463         vector<string> selList;
 464
 465         CutStack::const_iterator cit = theCuts.begin();
 466         CutStack::const_iterator end = theCuts.end();
 467         for (; cit != end; ++cit) {
 468                 // we do not use cit-> here because gcc 2.9x does not
 469                 // like it (JMarc)
 470                 ParagraphList const & pars = (*cit).first;
 471                 string asciiSel;
 472                 ParagraphList::const_iterator pit = pars.begin();
 473                 ParagraphList::const_iterator pend = pars.end();
 474                 for (; pit != pend; ++pit) {
 475                         asciiSel += pit->asString(buffer, false);
 476                         if (asciiSel.size() > 25) {
 477                                 asciiSel.replace(22, string::npos, "...");
 478                                 break;
 479                         }
 480                 }
 481
 482                 selList.push_back(asciiSel);
 483         }
 484
 485         return selList;
 486 }
 487
 488
 489 lyx::size_type numberOfSelections()
 490 {
 491         return theCuts.size();
 492 }
 493
 494
 495 void cutSelection(LCursor & cur, bool doclear, bool realcut)
 496 {
 497         // This doesn't make sense, if there is no selection
 498         if (!cur.selection())
 499                 return;
 500
 501         // OK, we have a selection. This is always between cur.selBegin()
 502         // and cur.selEnd()
 503
 504         if (cur.inTexted()) {
 505                 LyXText * text = cur.text();
 506                 BOOST_ASSERT(text);
 507                 // Stuff what we got on the clipboard. Even if there is no selection.
 508
 509                 // There is a problem with having the stuffing here in that the
 510                 // larger the selection the slower LyX will get. This can be
 511                 // solved by running the line below only when the selection has
 512                 // finished. The solution used currently just works, to make it
 513                 // faster we need to be more clever and probably also have more
 514                 // calls to theApp->selection().put. (Lgb)
 515 //              theApp->selection().put(cur.selectionAsString(true));
 516
 517
 518                 // make sure that the depth behind the selection are restored, too
 519                 recordUndoSelection(cur);
 520                 pit_type begpit = cur.selBegin().pit();
 521                 pit_type endpit = cur.selEnd().pit();
 522
 523                 int endpos = cur.selEnd().pos();
 524
 525                 BufferParams const & bp = cur.buffer().params();
 526                 if (realcut) {
 527                         copySelectionHelper(cur.buffer(),
 528                                 text->paragraphs(),
 529                                 begpit, endpit,
 530                                 cur.selBegin().pos(), endpos,
 531                                 bp.textclass);
 532                 }
 533
 534                 boost::tie(endpit, endpos) =
 535                         eraseSelectionHelper(bp,
 536                                 text->paragraphs(),
 537                                 begpit, endpit,
 538                                 cur.selBegin().pos(), endpos,
 539                                 doclear);
 540
 541                 // sometimes necessary
 542                 if (doclear)
 543                         text->paragraphs()[begpit].stripLeadingSpaces();
 544
 545                 // cutSelection can invalidate the cursor so we need to set
 546                 // it anew. (Lgb)
 547                 // we prefer the end for when tracking changes
 548                 cur.pos() = endpos;
 549                 cur.pit() = endpit;
 550
 551                 // need a valid cursor. (Lgb)
 552                 cur.clearSelection();
 553                 updateLabels(cur.buffer());
 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         // stuff the selection onto the X clipboard, from an explicit copy request
 579         theApp->clipboard().put(cur.selectionAsString(true));
 580
 581         // this doesn't make sense, if there is no selection
 582         if (!cur.selection())
 583                 return;
 584
 585         if (cur.inTexted()) {
 586                 LyXText * text = cur.text();
 587                 BOOST_ASSERT(text);
 588                 // ok we have a selection. This is always between cur.selBegin()
 589                 // and sel_end cursor
 590
 591                 // copy behind a space if there is one
 592                 ParagraphList & pars = text->paragraphs();
 593                 pos_type pos = cur.selBegin().pos();
 594                 pit_type par = cur.selBegin().pit();
 595                 while (pos < pars[par].size()
 596                                          && pars[par].isLineSeparator(pos)
 597                                          && (par != cur.selEnd().pit() || pos < cur.selEnd().pos()))
 598                         ++pos;
 599
 600                 copySelectionHelper(cur.buffer(), pars, par, cur.selEnd().pit(),
 601                         pos, cur.selEnd().pos(), cur.buffer().params().textclass);
 602         }
 603
 604         if (cur.inMathed()) {
 605                 //lyxerr << "copySelection in mathed" << endl;
 606                 ParagraphList pars;
 607                 pars.push_back(Paragraph());
 608                 BufferParams const & bp = cur.buffer().params();
 609                 pars.back().layout(bp.getLyXTextClass().defaultLayout());
 610                 for_each(pars.begin(), pars.end(), resetParagraph(cur.buffer()));
 611                 pars.back().insert(0, grabSelection(cur), LyXFont());
 612                 theCuts.push(make_pair(pars, bp.textclass));
 613         }
 614         // tell tabular that a recent copy happened
 615         dirtyTabularStack(false);
 616 }
 617
 618
 619 std::string getSelection(Buffer const & buf, size_t sel_index)
 620 {
 621         return sel_index < theCuts.size()
 622                 ? theCuts[sel_index].first.back().asString(buf, false)
 623                 : string();
 624 }
 625
 626
 627 void pasteParagraphList(LCursor & cur, ParagraphList const & parlist,
 628                         textclass_type textclass, ErrorList & errorList)
 629 {
 630         if (cur.inTexted()) {
 631                 LyXText * text = cur.text();
 632                 BOOST_ASSERT(text);
 633
 634                 recordUndo(cur);
 635
 636                 pit_type endpit;
 637                 PitPosPair ppp;
 638
 639                 boost::tie(ppp, endpit) =
 640                         pasteSelectionHelper(cur, parlist,
 641                                              textclass, errorList);
 642                 updateLabels(cur.buffer());
 643                 cur.clearSelection();
 644                 text->setCursor(cur, ppp.first, ppp.second);
 645         }
 646
 647         // mathed is handled in InsetMathNest/InsetMathGrid
 648         BOOST_ASSERT(!cur.inMathed());
 649 }
 650
 651
 652 void pasteSelection(LCursor & cur, ErrorList & errorList, size_t sel_index)
 653 {
 654         // this does not make sense, if there is nothing to paste
 655         if (!checkPastePossible(sel_index))
 656                 return;
 657
 658         pasteParagraphList(cur, theCuts[sel_index].first,
 659                            theCuts[sel_index].second, errorList);
 660         cur.setSelection();
 661 }
 662
 663
 664 // simple replacing. The font of the first selected character is used
 665 void replaceSelectionWithString(LCursor & cur, string const & str, bool backwards)
 666 {
 667         recordUndo(cur);
 668         DocIterator selbeg = cur.selectionBegin();
 669
 670         // Get font setting before we cut
 671         LyXFont const font =
 672                 selbeg.paragraph().getFontSettings(cur.buffer().params(), selbeg.pos());
 673
 674         // Insert the new string
 675         pos_type pos = cur.selEnd().pos();
 676         Paragraph & par = cur.selEnd().paragraph();
 677         string::const_iterator cit = str.begin();
 678         string::const_iterator end = str.end();
 679         for (; cit != end; ++cit, ++pos)
 680                 par.insertChar(pos, (*cit), font);
 681
 682         // Cut the selection
 683         cutSelection(cur, true, false);
 684
 685         // select the replacement
 686         if (backwards) {
 687                 selbeg.pos() += str.length();
 688                 cur.setSelection(selbeg, -str.length());
 689         } else
 690                 cur.setSelection(selbeg, str.length());
 691 }
 692
 693
 694 void replaceSelection(LCursor & cur)
 695 {
 696         if (cur.selection())
 697                 cutSelection(cur, true, false);
 698 }
 699
 700
 701 void eraseSelection(LCursor & cur)
 702 {
 703         //lyxerr << "LCursor::eraseSelection begin: " << cur << endl;
 704         CursorSlice const & i1 = cur.selBegin();
 705         CursorSlice const & i2 = cur.selEnd();
 706         if (i1.inset().asInsetMath()) {
 707                 cur.top() = i1;
 708                 if (i1.idx() == i2.idx()) {
 709                         i1.cell().erase(i1.pos(), i2.pos());
 710                         // We may have deleted i1.cell(cur.pos()).
 711                         // Make sure that pos is valid.
 712                         if (cur.pos() > cur.lastpos())
 713                                 cur.pos() = cur.lastpos();
 714                 } else {
 715                         InsetMath * p = i1.asInsetMath();
 716                         InsetBase::row_type r1, r2;
 717                         InsetBase::col_type c1, c2;
 718                         region(i1, i2, r1, r2, c1, c2);
 719                         for (InsetBase::row_type row = r1; row <= r2; ++row)
 720                                 for (InsetBase::col_type col = c1; col <= c2; ++col)
 721                                         p->cell(p->index(row, col)).clear();
 722                         // We've deleted the whole cell. Only pos 0 is valid.
 723                         cur.pos() = 0;
 724                 }
 725                 // need a valid cursor. (Lgb)
 726                 cur.clearSelection();
 727         } else {
 728                 lyxerr << "can't erase this selection 1" << endl;
 729         }
 730         //lyxerr << "LCursor::eraseSelection end: " << cur << endl;
 731 }
 732
 733
 734 void selDel(LCursor & cur)
 735 {
 736         //lyxerr << "LCursor::selDel" << endl;
 737         if (cur.selection())
 738                 eraseSelection(cur);
 739 }
 740
 741
 742 void selClearOrDel(LCursor & cur)
 743 {
 744         //lyxerr << "LCursor::selClearOrDel" << endl;
 745         if (lyxrc.auto_region_delete)
 746                 selDel(cur);
 747         else
 748                 cur.selection() = false;
 749 }
 750
 751
 752 string grabSelection(LCursor const & cur)
 753 {
 754         if (!cur.selection())
 755                 return string();
 756
 757         // FIXME: What is wrong with the following?
 758 #if 0
 759         std::ostringstream os;
 760         for (DocIterator dit = cur.selectionBegin();
 761              dit != cur.selectionEnd(); dit.forwardPos())
 762                 os << asString(dit.cell());
 763         return os.str();
 764 #endif
 765
 766         CursorSlice i1 = cur.selBegin();
 767         CursorSlice i2 = cur.selEnd();
 768
 769         if (i1.idx() == i2.idx()) {
 770                 if (i1.inset().asInsetMath()) {
 771                         MathArray::const_iterator it = i1.cell().begin();
 772                         return asString(MathArray(it + i1.pos(), it + i2.pos()));
 773                 } else {
 774                         return "unknown selection 1";
 775                 }
 776         }
 777
 778         InsetBase::row_type r1, r2;
 779         InsetBase::col_type c1, c2;
 780         region(i1, i2, r1, r2, c1, c2);
 781
 782         string data;
 783         if (i1.inset().asInsetMath()) {
 784                 for (InsetBase::row_type row = r1; row <= r2; ++row) {
 785                         if (row > r1)
 786                                 data += "\\\\";
 787                         for (InsetBase::col_type col = c1; col <= c2; ++col) {
 788                                 if (col > c1)
 789                                         data += '&';
 790                                 data += asString(i1.asInsetMath()->
 791                                         cell(i1.asInsetMath()->index(row, col)));
 792                         }
 793                 }
 794         } else {
 795                 data = "unknown selection 2";
 796         }
 797         return data;
 798 }
 799
 800
 801 void dirtyTabularStack(bool b)
 802 {
 803         dirty_tabular_stack_ = b;
 804 }
 805
 806
 807 bool tabularStackDirty()
 808 {
 809         return dirty_tabular_stack_;
 810 }
 811
 812
 813 } // namespace cap
 814 } // namespace lyx