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/Gui.h"
  49 #include "frontends/LyXView.h"
  50 #include "frontends/Clipboard.h"
  51
  52 #include <boost/tuple/tuple.hpp>
  53
  54 using lyx::pos_type;
  55 using lyx::pit_type;
  56 using lyx::textclass_type;
  57
  58 using lyx::support::bformat;
  59
  60 using lyx::frontend::Gui;
  61 using lyx::frontend::Clipboard;
  62
  63 using std::endl;
  64 using std::for_each;
  65 using std::make_pair;
  66 using std::pair;
  67 using std::vector;
  68 using std::string;
  69
  70
  71 namespace {
  72
  73 typedef std::pair<lyx::pit_type, int> PitPosPair;
  74
  75 typedef limited_stack<pair<ParagraphList, textclass_type> > CutStack;
  76
  77 CutStack theCuts(10);
  78
  79 // store whether the tabular stack is newer than the normal copy stack
  80 // FIXME: this is a workaround for bug 1919. Should be removed for 1.5,
  81 // when we (hopefully) have a one-for-all paste mechanism.
  82 bool dirty_tabular_stack_;
  83
  84 class resetParagraph : public std::unary_function<Paragraph, Buffer const &> {
  85 public:
  86         resetParagraph(Buffer const & b) : buffer_(b) {}
  87         void operator()(Paragraph & p) const {
  88                 p.cleanChanges();
  89                 // ERT paragraphs have the Language latex_language.
  90                 // This is invalid outside of ERT, so we need to change it
  91                 // to the buffer language.
  92                 if (p.ownerCode() == InsetBase::ERT_CODE) {
  93                         p.changeLanguage(buffer_.params(), latex_language,
  94                                          buffer_.getLanguage());
  95                 }
  96                 p.setInsetOwner(0);
  97         }
  98 private:
  99         Buffer const & buffer_;
 100 };
 101
 102
 103 void region(CursorSlice const & i1, CursorSlice const & i2,
 104         InsetBase::row_type & r1, InsetBase::row_type & r2,
 105         InsetBase::col_type & c1, InsetBase::col_type & c2)
 106 {
 107         InsetBase & p = i1.inset();
 108         c1 = p.col(i1.idx());
 109         c2 = p.col(i2.idx());
 110         if (c1 > c2)
 111                 std::swap(c1, c2);
 112         r1 = p.row(i1.idx());
 113         r2 = p.row(i2.idx());
 114         if (r1 > r2)
 115                 std::swap(r1, r2);
 116 }
 117
 118
 119 bool checkPastePossible(int index)
 120 {
 121         return size_t(index) < theCuts.size() && !theCuts[index].first.empty();
 122 }
 123
 124
 125 pair<PitPosPair, pit_type>
 126 pasteSelectionHelper(LCursor & cur, ParagraphList const & parlist,
 127                      textclass_type textclass, ErrorList & errorlist)
 128 {
 129         Buffer const & buffer = cur.buffer();
 130         pit_type pit = cur.pit();
 131         pos_type pos = cur.pos();
 132         ParagraphList & pars = cur.text()->paragraphs();
 133
 134         if (parlist.empty())
 135                 return make_pair(PitPosPair(pit, pos), pit);
 136
 137         BOOST_ASSERT (pos <= pars[pit].size());
 138
 139         // Make a copy of the CaP paragraphs.
 140         ParagraphList insertion = parlist;
 141         textclass_type const tc = buffer.params().textclass;
 142
 143         // Now remove all out of the pars which is NOT allowed in the
 144         // new environment and set also another font if that is required.
 145
 146         // Convert newline to paragraph break in ERT inset.
 147         // This should not be here!
 148         if (pars[pit].inInset() &&
 149             pars[pit].inInset()->lyxCode() == InsetBase::ERT_CODE) {
 150                 for (ParagraphList::size_type i = 0; i < insertion.size(); ++i) {
 151                         for (pos_type j = 0; j < insertion[i].size(); ++j) {
 152                                 if (insertion[i].isNewline(j)) {
 153                                         insertion[i].erase(j);
 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                                 tmpbuf->erase(i--);
 213                 }
 214
 215                 // reset change tracking status
 216                 if (buffer.params().tracking_changes)
 217                         tmpbuf->cleanChanges(Paragraph::trackingOn);
 218                 else
 219                         tmpbuf->cleanChanges(Paragraph::trackingOff);
 220         }
 221
 222         bool const empty = pars[pit].empty();
 223         if (!empty) {
 224                 // Make the buf exactly the same layout as the cursor
 225                 // paragraph.
 226                 insertion.begin()->makeSameLayout(pars[pit]);
 227         }
 228
 229         // Prepare the paragraphs and insets for insertion.
 230         // A couple of insets store buffer references so need updating.
 231         insertion.swap(in.paragraphs());
 232
 233         ParIterator fpit = par_iterator_begin(in);
 234         ParIterator fend = par_iterator_end(in);
 235
 236         for (; fpit != fend; ++fpit) {
 237                 InsetList::iterator lit = fpit->insetlist.begin();
 238                 InsetList::iterator eit = fpit->insetlist.end();
 239
 240                 for (; lit != eit; ++lit) {
 241                         switch (lit->inset->lyxCode()) {
 242                         case InsetBase::TABULAR_CODE: {
 243                                 InsetTabular * it = static_cast<InsetTabular*>(lit->inset);
 244                                 it->buffer(&buffer);
 245                                 break;
 246                         }
 247
 248                         default:
 249                                 break; // nothing
 250                         }
 251                 }
 252         }
 253         insertion.swap(in.paragraphs());
 254
 255         // Split the paragraph for inserting the buf if necessary.
 256         if (!empty)
 257                 breakParagraphConservative(buffer.params(), pars, pit, pos);
 258
 259         // Paste it!
 260         if (empty) {
 261                 pars.insert(boost::next(pars.begin(), pit),
 262                             insertion.begin(),
 263                             insertion.end());
 264
 265                 // merge the empty par with the last par of the insertion
 266                 mergeParagraph(buffer.params(), pars,
 267                                pit + insertion.size() - 1);
 268         } else {
 269                 pars.insert(boost::next(pars.begin(), pit + 1),
 270                             insertion.begin(),
 271                             insertion.end());
 272
 273                 // merge the first par of the insertion with the current par
 274                 mergeParagraph(buffer.params(), pars, pit);
 275         }
 276
 277         pit_type last_paste = pit + insertion.size() - 1;
 278
 279         // Store the new cursor position.
 280         pit = last_paste;
 281         pos = pars[last_paste].size();
 282
 283         // Join (conditionally) last pasted paragraph with next one, i.e.,
 284         // the tail of the spliced document paragraph
 285         if (!empty && last_paste + 1 != pit_type(pars.size())) {
 286                 if (pars[last_paste + 1].hasSameLayout(pars[last_paste])) {
 287                         mergeParagraph(buffer.params(), pars, last_paste);
 288                 } else if (pars[last_paste + 1].empty()) {
 289                         pars[last_paste + 1].makeSameLayout(pars[last_paste]);
 290                         mergeParagraph(buffer.params(), pars, last_paste);
 291                 } else if (pars[last_paste].empty()) {
 292                         pars[last_paste].makeSameLayout(pars[last_paste + 1]);
 293                         mergeParagraph(buffer.params(), pars, last_paste);
 294                 } else {
 295                         pars[last_paste + 1].stripLeadingSpaces();
 296                         ++last_paste;
 297                 }
 298         }
 299
 300         return make_pair(PitPosPair(pit, pos), last_paste + 1);
 301 }
 302
 303
 304 PitPosPair eraseSelectionHelper(BufferParams const & params,
 305         ParagraphList & pars,
 306         pit_type startpit, pit_type endpit,
 307         int startpos, int endpos, bool doclear)
 308 {
 309         // Start of selection is really invalid.
 310         if (startpit == pit_type(pars.size()) ||
 311             (startpos > pars[startpit].size()))
 312                 return PitPosPair(endpit, endpos);
 313
 314         // Start and end is inside same paragraph
 315         if (endpit == pit_type(pars.size()) ||
 316             startpit == endpit) {
 317                 endpos -= pars[startpit].erase(startpos, endpos);
 318                 return PitPosPair(endpit, endpos);
 319         }
 320
 321         // A paragraph break has to be physically removed by merging, but
 322         // only if either (1) change tracking is off, or (2) the para break
 323         // is "blue"
 324         for (pit_type pit = startpit; pit != endpit + 1;) {
 325                 bool const merge = !params.tracking_changes ||
 326                         pars[pit].lookupChange(pars[pit].size()) ==
 327                         Change::INSERTED;
 328                 pos_type const left  = ( pit == startpit ? startpos : 0 );
 329                 pos_type const right = ( pit == endpit ? endpos :
 330                                 pars[pit].size() + 1 );
 331                 // Logical erase only:
 332                 pars[pit].erase(left, right);
 333                 // Separate handling of para break:
 334                 if (merge && pit != endpit &&
 335                    (pit + 1 != endpit || pars[pit].hasSameLayout(pars[pit + 1]))) {
 336                         pos_type const thissize = pars[pit].size();
 337                         if (doclear)
 338                                 pars[pit + 1].stripLeadingSpaces();
 339                         mergeParagraph(params, pars, pit);
 340                         --endpit;
 341                         if (pit == endpit)
 342                                 endpos += thissize;
 343                 } else
 344                         ++pit;
 345         }
 346
 347         // Ensure legal cursor pos:
 348         endpit = startpit;
 349         endpos = startpos;
 350         return PitPosPair(endpit, endpos);
 351 }
 352
 353
 354 void copySelectionHelper(Buffer const & buf, ParagraphList & pars,
 355         pit_type startpit, pit_type endpit,
 356         int start, int end, textclass_type tc)
 357 {
 358         BOOST_ASSERT(0 <= start && start <= pars[startpit].size());
 359         BOOST_ASSERT(0 <= end && end <= pars[endpit].size());
 360         BOOST_ASSERT(startpit != endpit || start <= end);
 361
 362         // Clone the paragraphs within the selection.
 363         ParagraphList paragraphs(boost::next(pars.begin(), startpit),
 364                                  boost::next(pars.begin(), endpit + 1));
 365
 366         for_each(paragraphs.begin(), paragraphs.end(), resetParagraph(buf));
 367
 368         // Cut out the end of the last paragraph.
 369         Paragraph & back = paragraphs.back();
 370         back.erase(end, back.size());
 371
 372         // Cut out the begin of the first paragraph
 373         Paragraph & front = paragraphs.front();
 374         front.erase(0, start);
 375
 376         theCuts.push(make_pair(paragraphs, tc));
 377 }
 378
 379 } // namespace anon
 380
 381
 382
 383
 384 namespace lyx {
 385 namespace cap {
 386
 387 string grabAndEraseSelection(LCursor & cur)
 388 {
 389         if (!cur.selection())
 390                 return string();
 391         string res = grabSelection(cur);
 392         eraseSelection(cur);
 393         return res;
 394 }
 395
 396
 397 void switchBetweenClasses(textclass_type c1, textclass_type c2,
 398         InsetText & in, ErrorList & errorlist)
 399 {
 400         BOOST_ASSERT(!in.paragraphs().empty());
 401         if (c1 == c2)
 402                 return;
 403
 404         LyXTextClass const & tclass1 = textclasslist[c1];
 405         LyXTextClass const & tclass2 = textclasslist[c2];
 406
 407         // layouts
 408         ParIterator end = par_iterator_end(in);
 409         for (ParIterator it = par_iterator_begin(in); it != end; ++it) {
 410                 string const name = it->layout()->name();
 411                 bool hasLayout = tclass2.hasLayout(name);
 412
 413                 if (hasLayout)
 414                         it->layout(tclass2[name]);
 415                 else
 416                         it->layout(tclass2.defaultLayout());
 417
 418                 if (!hasLayout && name != tclass1.defaultLayoutName()) {
 419                         docstring const s = bformat(
 420                                                  _("Layout had to be changed from\n%1$s to %2$s\n"
 421                                                 "because of class conversion from\n%3$s to %4$s"),
 422                          lyx::from_utf8(name), lyx::from_utf8(it->layout()->name()),
 423                          lyx::from_utf8(tclass1.name()), lyx::from_utf8(tclass2.name()));
 424                         // To warn the user that something had to be done.
 425                         errorlist.push_back(ErrorItem(_("Changed Layout"), s,
 426                                                       it->id(), 0,
 427                                                       it->size()));
 428                 }
 429         }
 430
 431         // character styles
 432         InsetIterator const i_end = inset_iterator_end(in);
 433         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 434                 if (it->lyxCode() == InsetBase::CHARSTYLE_CODE) {
 435                         InsetCharStyle & inset =
 436                                 static_cast<InsetCharStyle &>(*it);
 437                         string const name = inset.params().type;
 438                         CharStyles::iterator const found_cs =
 439                                 tclass2.charstyle(name);
 440                         if (found_cs == tclass2.charstyles().end()) {
 441                                 // The character style is undefined in tclass2
 442                                 inset.setUndefined();
 443                                 docstring const s = bformat(_(
 444                                         "Character style %1$s is "
 445                                         "undefined because of class "
 446                                         "conversion from\n%2$s to %3$s"),
 447                                          lyx::from_utf8(name), lyx::from_utf8(tclass1.name()),
 448                                          lyx::from_utf8(tclass2.name()));
 449                                 // To warn the user that something had to be done.
 450                                 errorlist.push_back(ErrorItem(
 451                                         _("Undefined character style"),
 452                                         s, it.paragraph().id(), it.pos(), it.pos() + 1));
 453                         } else if (inset.undefined()) {
 454                                 // The character style is undefined in
 455                                 // tclass1 and is defined in tclass2
 456                                 inset.setDefined(found_cs);
 457                         }
 458                 }
 459         }
 460 }
 461
 462
 463 std::vector<string> const availableSelections(Buffer const & buffer)
 464 {
 465         vector<string> selList;
 466
 467         CutStack::const_iterator cit = theCuts.begin();
 468         CutStack::const_iterator end = theCuts.end();
 469         for (; cit != end; ++cit) {
 470                 // we do not use cit-> here because gcc 2.9x does not
 471                 // like it (JMarc)
 472                 ParagraphList const & pars = (*cit).first;
 473                 string asciiSel;
 474                 ParagraphList::const_iterator pit = pars.begin();
 475                 ParagraphList::const_iterator pend = pars.end();
 476                 for (; pit != pend; ++pit) {
 477                         asciiSel += pit->asString(buffer, false);
 478                         if (asciiSel.size() > 25) {
 479                                 asciiSel.replace(22, string::npos, "...");
 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 cur.bv().owner()->gui().selection().put. (Lgb)
 517 //              cur.bv().owner()->gui().selection().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         cur.bv().owner()->gui().clipboard().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                 pars.back().insert(0, grabSelection(cur), LyXFont());
 614                 theCuts.push(make_pair(pars, bp.textclass));
 615         }
 616         // tell tabular that a recent copy happened
 617         dirtyTabularStack(false);
 618 }
 619
 620
 621 std::string getSelection(Buffer const & buf, size_t sel_index)
 622 {
 623         return sel_index < theCuts.size()
 624                 ? theCuts[sel_index].first.back().asString(buf, false)
 625                 : string();
 626 }
 627
 628
 629 void pasteParagraphList(LCursor & cur, ParagraphList const & parlist,
 630                         textclass_type textclass, ErrorList & errorList)
 631 {
 632         if (cur.inTexted()) {
 633                 LyXText * text = cur.text();
 634                 BOOST_ASSERT(text);
 635
 636                 recordUndo(cur);
 637
 638                 pit_type endpit;
 639                 PitPosPair ppp;
 640
 641                 boost::tie(ppp, endpit) =
 642                         pasteSelectionHelper(cur, parlist,
 643                                              textclass, errorList);
 644                 updateLabels(cur.buffer());
 645                 cur.clearSelection();
 646                 text->setCursor(cur, ppp.first, ppp.second);
 647         }
 648
 649         // mathed is handled in InsetMathNest/InsetMathGrid
 650         BOOST_ASSERT(!cur.inMathed());
 651 }
 652
 653
 654 void pasteSelection(LCursor & cur, ErrorList & errorList, size_t sel_index)
 655 {
 656         // this does not make sense, if there is nothing to paste
 657         if (!checkPastePossible(sel_index))
 658                 return;
 659
 660         pasteParagraphList(cur, theCuts[sel_index].first,
 661                            theCuts[sel_index].second, errorList);
 662         cur.setSelection();
 663 }
 664
 665
 666 // simple replacing. The font of the first selected character is used
 667 void replaceSelectionWithString(LCursor & cur, string const & str, bool backwards)
 668 {
 669         recordUndo(cur);
 670         DocIterator selbeg = cur.selectionBegin();
 671
 672         // Get font setting before we cut
 673         LyXFont const font =
 674                 selbeg.paragraph().getFontSettings(cur.buffer().params(), selbeg.pos());
 675
 676         // Insert the new string
 677         pos_type pos = cur.selEnd().pos();
 678         Paragraph & par = cur.selEnd().paragraph();
 679         string::const_iterator cit = str.begin();
 680         string::const_iterator end = str.end();
 681         for (; cit != end; ++cit, ++pos)
 682                 par.insertChar(pos, (*cit), font);
 683
 684         // Cut the selection
 685         cutSelection(cur, true, false);
 686
 687         // select the replacement
 688         if (backwards) {
 689                 selbeg.pos() += str.length();
 690                 cur.setSelection(selbeg, -str.length());
 691         } else
 692                 cur.setSelection(selbeg, str.length());
 693 }
 694
 695
 696 void replaceSelection(LCursor & cur)
 697 {
 698         if (cur.selection())
 699                 cutSelection(cur, true, false);
 700 }
 701
 702
 703 void eraseSelection(LCursor & cur)
 704 {
 705         //lyxerr << "LCursor::eraseSelection begin: " << cur << endl;
 706         CursorSlice const & i1 = cur.selBegin();
 707         CursorSlice const & i2 = cur.selEnd();
 708         if (i1.inset().asInsetMath()) {
 709                 cur.top() = i1;
 710                 if (i1.idx() == i2.idx()) {
 711                         i1.cell().erase(i1.pos(), i2.pos());
 712                         // We may have deleted i1.cell(cur.pos()).
 713                         // Make sure that pos is valid.
 714                         if (cur.pos() > cur.lastpos())
 715                                 cur.pos() = cur.lastpos();
 716                 } else {
 717                         InsetMath * p = i1.asInsetMath();
 718                         InsetBase::row_type r1, r2;
 719                         InsetBase::col_type c1, c2;
 720                         region(i1, i2, r1, r2, c1, c2);
 721                         for (InsetBase::row_type row = r1; row <= r2; ++row)
 722                                 for (InsetBase::col_type col = c1; col <= c2; ++col)
 723                                         p->cell(p->index(row, col)).clear();
 724                         // We've deleted the whole cell. Only pos 0 is valid.
 725                         cur.pos() = 0;
 726                 }
 727                 // need a valid cursor. (Lgb)
 728                 cur.clearSelection();
 729         } else {
 730                 lyxerr << "can't erase this selection 1" << endl;
 731         }
 732         //lyxerr << "LCursor::eraseSelection end: " << cur << endl;
 733 }
 734
 735
 736 void selDel(LCursor & cur)
 737 {
 738         //lyxerr << "LCursor::selDel" << endl;
 739         if (cur.selection())
 740                 eraseSelection(cur);
 741 }
 742
 743
 744 void selClearOrDel(LCursor & cur)
 745 {
 746         //lyxerr << "LCursor::selClearOrDel" << endl;
 747         if (lyxrc.auto_region_delete)
 748                 selDel(cur);
 749         else
 750                 cur.selection() = false;
 751 }
 752
 753
 754 string grabSelection(LCursor const & cur)
 755 {
 756         if (!cur.selection())
 757                 return string();
 758
 759         // FIXME: What is wrong with the following?
 760 #if 0
 761         std::ostringstream os;
 762         for (DocIterator dit = cur.selectionBegin();
 763              dit != cur.selectionEnd(); dit.forwardPos())
 764                 os << asString(dit.cell());
 765         return os.str();
 766 #endif
 767
 768         CursorSlice i1 = cur.selBegin();
 769         CursorSlice i2 = cur.selEnd();
 770
 771         if (i1.idx() == i2.idx()) {
 772                 if (i1.inset().asInsetMath()) {
 773                         MathArray::const_iterator it = i1.cell().begin();
 774                         return asString(MathArray(it + i1.pos(), it + i2.pos()));
 775                 } else {
 776                         return "unknown selection 1";
 777                 }
 778         }
 779
 780         InsetBase::row_type r1, r2;
 781         InsetBase::col_type c1, c2;
 782         region(i1, i2, r1, r2, c1, c2);
 783
 784         string data;
 785         if (i1.inset().asInsetMath()) {
 786                 for (InsetBase::row_type row = r1; row <= r2; ++row) {
 787                         if (row > r1)
 788                                 data += "\\\\";
 789                         for (InsetBase::col_type col = c1; col <= c2; ++col) {
 790                                 if (col > c1)
 791                                         data += '&';
 792                                 data += asString(i1.asInsetMath()->
 793                                         cell(i1.asInsetMath()->index(row, col)));
 794                         }
 795                 }
 796         } else {
 797                 data = "unknown selection 2";
 798         }
 799         return data;
 800 }
 801
 802
 803 void dirtyTabularStack(bool b)
 804 {
 805         dirty_tabular_stack_ = b;
 806 }
 807
 808
 809 bool tabularStackDirty()
 810 {
 811         return dirty_tabular_stack_;
 812 }
 813
 814
 815 } // namespace cap
 816 } // namespace lyx