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/Application.h"
  48 #include "frontends/Clipboard.h"
  49
  50 #include <boost/tuple/tuple.hpp>
  51
  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                 p.cleanChanges();
  86                 // ERT paragraphs have the Language latex_language.
  87                 // This is invalid outside of ERT, so we need to change it
  88                 // to the buffer language.
  89                 if (p.ownerCode() == InsetBase::ERT_CODE) {
  90                         p.changeLanguage(buffer_.params(), latex_language,
  91                                          buffer_.getLanguage());
  92                 }
  93                 p.setInsetOwner(0);
  94         }
  95 private:
  96         Buffer const & buffer_;
  97 };
  98
  99
 100 void region(CursorSlice const & i1, CursorSlice const & i2,
 101         InsetBase::row_type & r1, InsetBase::row_type & r2,
 102         InsetBase::col_type & c1, InsetBase::col_type & c2)
 103 {
 104         InsetBase & p = i1.inset();
 105         c1 = p.col(i1.idx());
 106         c2 = p.col(i2.idx());
 107         if (c1 > c2)
 108                 std::swap(c1, c2);
 109         r1 = p.row(i1.idx());
 110         r2 = p.row(i2.idx());
 111         if (r1 > r2)
 112                 std::swap(r1, r2);
 113 }
 114
 115
 116 bool checkPastePossible(int index)
 117 {
 118         return size_t(index) < theCuts.size() && !theCuts[index].first.empty();
 119 }
 120
 121
 122 pair<PitPosPair, pit_type>
 123 pasteSelectionHelper(LCursor & cur, ParagraphList const & parlist,
 124                      textclass_type textclass, ErrorList & errorlist)
 125 {
 126         Buffer const & buffer = cur.buffer();
 127         pit_type pit = cur.pit();
 128         pos_type pos = cur.pos();
 129         ParagraphList & pars = cur.text()->paragraphs();
 130
 131         if (parlist.empty())
 132                 return make_pair(PitPosPair(pit, pos), pit);
 133
 134         BOOST_ASSERT (pos <= pars[pit].size());
 135
 136         // Make a copy of the CaP paragraphs.
 137         ParagraphList insertion = parlist;
 138         textclass_type const tc = buffer.params().textclass;
 139
 140         // Now remove all out of the pars which is NOT allowed in the
 141         // new environment and set also another font if that is required.
 142
 143         // Convert newline to paragraph break in ERT inset.
 144         // This should not be here!
 145         if (pars[pit].inInset() &&
 146             pars[pit].inInset()->lyxCode() == InsetBase::ERT_CODE) {
 147                 for (ParagraphList::size_type i = 0; i < insertion.size(); ++i) {
 148                         for (pos_type j = 0; j < insertion[i].size(); ++j) {
 149                                 if (insertion[i].isNewline(j)) {
 150                                         insertion[i].erase(j);
 151                                         breakParagraphConservative(
 152                                                         buffer.params(),
 153                                                         insertion, i, j);
 154                                 }
 155                         }
 156                 }
 157         }
 158
 159         // If we are in an inset which returns forceDefaultParagraphs,
 160         // set the paragraphs to default
 161         if (cur.inset().forceDefaultParagraphs(cur.idx())) {
 162                 LyXLayout_ptr const layout =
 163                         buffer.params().getLyXTextClass().defaultLayout();
 164                 ParagraphList::iterator const end = insertion.end();
 165                 for (ParagraphList::iterator par = insertion.begin();
 166                                 par != end; ++par)
 167                         par->layout(layout);
 168         }
 169
 170         // Make sure there is no class difference.
 171         InsetText in;
 172         // This works without copying any paragraph data because we have
 173         // a specialized swap method for ParagraphList. This is important
 174         // since we store pointers to insets at some places and we don't
 175         // want to invalidate them.
 176         insertion.swap(in.paragraphs());
 177         lyx::cap::switchBetweenClasses(textclass, tc, in, errorlist);
 178         insertion.swap(in.paragraphs());
 179
 180         ParagraphList::iterator tmpbuf = insertion.begin();
 181         int depth_delta = pars[pit].params().depth() - tmpbuf->params().depth();
 182
 183         Paragraph::depth_type max_depth = pars[pit].getMaxDepthAfter();
 184
 185         for (; tmpbuf != insertion.end(); ++tmpbuf) {
 186                 // If we have a negative jump so that the depth would
 187                 // go below 0 depth then we have to redo the delta to
 188                 // this new max depth level so that subsequent
 189                 // paragraphs are aligned correctly to this paragraph
 190                 // at level 0.
 191                 if (int(tmpbuf->params().depth()) + depth_delta < 0)
 192                         depth_delta = 0;
 193
 194                 // Set the right depth so that we are not too deep or shallow.
 195                 tmpbuf->params().depth(tmpbuf->params().depth() + depth_delta);
 196                 if (tmpbuf->params().depth() > max_depth)
 197                         tmpbuf->params().depth(max_depth);
 198
 199                 // Only set this from the 2nd on as the 2nd depends
 200                 // for maxDepth still on pit.
 201                 if (tmpbuf != insertion.begin())
 202                         max_depth = tmpbuf->getMaxDepthAfter();
 203
 204                 // Set the inset owner of this paragraph.
 205                 tmpbuf->setInsetOwner(pars[pit].inInset());
 206                 for (pos_type i = 0; i < tmpbuf->size(); ++i) {
 207                         if (tmpbuf->getChar(i) == Paragraph::META_INSET &&
 208                             !pars[pit].insetAllowed(tmpbuf->getInset(i)->lyxCode()))
 209                                 tmpbuf->erase(i--);
 210                 }
 211
 212                 // reset change tracking status
 213                 // FIXME: Change tracking (MG)
 214                 // tmpbuf->cleanChanges(Paragraph::trackingOn/Off);
 215         }
 216
 217         bool const empty = pars[pit].empty();
 218         if (!empty) {
 219                 // Make the buf exactly the same layout as the cursor
 220                 // paragraph.
 221                 insertion.begin()->makeSameLayout(pars[pit]);
 222         }
 223
 224         // Prepare the paragraphs and insets for insertion.
 225         // A couple of insets store buffer references so need updating.
 226         insertion.swap(in.paragraphs());
 227
 228         ParIterator fpit = par_iterator_begin(in);
 229         ParIterator fend = par_iterator_end(in);
 230
 231         for (; fpit != fend; ++fpit) {
 232                 InsetList::iterator lit = fpit->insetlist.begin();
 233                 InsetList::iterator eit = fpit->insetlist.end();
 234
 235                 for (; lit != eit; ++lit) {
 236                         switch (lit->inset->lyxCode()) {
 237                         case InsetBase::TABULAR_CODE: {
 238                                 InsetTabular * it = static_cast<InsetTabular*>(lit->inset);
 239                                 it->buffer(&buffer);
 240                                 break;
 241                         }
 242
 243                         default:
 244                                 break; // nothing
 245                         }
 246                 }
 247         }
 248         insertion.swap(in.paragraphs());
 249
 250         // Split the paragraph for inserting the buf if necessary.
 251         if (!empty)
 252                 breakParagraphConservative(buffer.params(), pars, pit, pos);
 253
 254         // Paste it!
 255         if (empty) {
 256                 pars.insert(boost::next(pars.begin(), pit),
 257                             insertion.begin(),
 258                             insertion.end());
 259
 260                 // merge the empty par with the last par of the insertion
 261                 mergeParagraph(buffer.params(), pars,
 262                                pit + insertion.size() - 1);
 263         } else {
 264                 pars.insert(boost::next(pars.begin(), pit + 1),
 265                             insertion.begin(),
 266                             insertion.end());
 267
 268                 // merge the first par of the insertion with the current par
 269                 mergeParagraph(buffer.params(), pars, pit);
 270         }
 271
 272         pit_type last_paste = pit + insertion.size() - 1;
 273
 274         // Store the new cursor position.
 275         pit = last_paste;
 276         pos = pars[last_paste].size();
 277
 278         // Join (conditionally) last pasted paragraph with next one, i.e.,
 279         // the tail of the spliced document paragraph
 280         if (!empty && last_paste + 1 != pit_type(pars.size())) {
 281                 if (pars[last_paste + 1].hasSameLayout(pars[last_paste])) {
 282                         mergeParagraph(buffer.params(), pars, last_paste);
 283                 } else if (pars[last_paste + 1].empty()) {
 284                         pars[last_paste + 1].makeSameLayout(pars[last_paste]);
 285                         mergeParagraph(buffer.params(), pars, last_paste);
 286                 } else if (pars[last_paste].empty()) {
 287                         pars[last_paste].makeSameLayout(pars[last_paste + 1]);
 288                         mergeParagraph(buffer.params(), pars, last_paste);
 289                 } else {
 290                         pars[last_paste + 1].stripLeadingSpaces();
 291                         ++last_paste;
 292                 }
 293         }
 294
 295         return make_pair(PitPosPair(pit, pos), last_paste + 1);
 296 }
 297
 298
 299 PitPosPair eraseSelectionHelper(BufferParams const & params,
 300         ParagraphList & pars,
 301         pit_type startpit, pit_type endpit,
 302         int startpos, int endpos, bool doclear)
 303 {
 304         // Start of selection is really invalid.
 305         if (startpit == pit_type(pars.size()) ||
 306             (startpos > pars[startpit].size()))
 307                 return PitPosPair(endpit, endpos);
 308
 309         // Start and end is inside same paragraph
 310         if (endpit == pit_type(pars.size()) ||
 311             startpit == endpit) {
 312                 endpos -= pars[startpit].erase(startpos, endpos);
 313                 return PitPosPair(endpit, endpos);
 314         }
 315
 316         // A paragraph break has to be physically removed by merging, but
 317         // only if either (1) change tracking is off, or (2) the para break
 318         // is "blue"
 319         for (pit_type pit = startpit; pit != endpit + 1;) {
 320                 // FIXME: Change tracking (MG)
 321                 bool const merge = !params.trackChanges ||
 322                         pars[pit].lookupChange(pars[pit].size()) ==
 323                         Change::INSERTED;
 324                 pos_type const left  = ( pit == startpit ? startpos : 0 );
 325                 pos_type const right = ( pit == endpit ? endpos :
 326                                 pars[pit].size() + 1 );
 327                 // Logical erase only:
 328                 pars[pit].erase(left, right);
 329                 // Separate handling of para break:
 330                 if (merge && pit != endpit &&
 331                    (pit + 1 != endpit || pars[pit].hasSameLayout(pars[pit + 1]))) {
 332                         pos_type const thissize = pars[pit].size();
 333                         if (doclear)
 334                                 pars[pit + 1].stripLeadingSpaces();
 335                         mergeParagraph(params, pars, pit);
 336                         --endpit;
 337                         if (pit == endpit)
 338                                 endpos += thissize;
 339                 } else
 340                         ++pit;
 341         }
 342
 343         // Ensure legal cursor pos:
 344         endpit = startpit;
 345         endpos = startpos;
 346         return PitPosPair(endpit, endpos);
 347 }
 348
 349
 350 void copySelectionHelper(Buffer const & buf, ParagraphList & pars,
 351         pit_type startpit, pit_type endpit,
 352         int start, int end, textclass_type tc)
 353 {
 354         BOOST_ASSERT(0 <= start && start <= pars[startpit].size());
 355         BOOST_ASSERT(0 <= end && end <= pars[endpit].size());
 356         BOOST_ASSERT(startpit != endpit || start <= end);
 357
 358         // Clone the paragraphs within the selection.
 359         ParagraphList paragraphs(boost::next(pars.begin(), startpit),
 360                                  boost::next(pars.begin(), endpit + 1));
 361
 362         for_each(paragraphs.begin(), paragraphs.end(), resetParagraph(buf));
 363
 364         // Cut out the end of the last paragraph.
 365         Paragraph & back = paragraphs.back();
 366         back.erase(end, back.size());
 367
 368         // Cut out the begin of the first paragraph
 369         Paragraph & front = paragraphs.front();
 370         front.erase(0, start);
 371
 372         theCuts.push(make_pair(paragraphs, tc));
 373 }
 374
 375 } // namespace anon
 376
 377
 378
 379
 380 namespace lyx {
 381 namespace cap {
 382
 383 string grabAndEraseSelection(LCursor & cur)
 384 {
 385         if (!cur.selection())
 386                 return string();
 387         string res = grabSelection(cur);
 388         eraseSelection(cur);
 389         return res;
 390 }
 391
 392
 393 void switchBetweenClasses(textclass_type c1, textclass_type c2,
 394         InsetText & in, ErrorList & errorlist)
 395 {
 396         BOOST_ASSERT(!in.paragraphs().empty());
 397         if (c1 == c2)
 398                 return;
 399
 400         LyXTextClass const & tclass1 = textclasslist[c1];
 401         LyXTextClass const & tclass2 = textclasslist[c2];
 402
 403         // layouts
 404         ParIterator end = par_iterator_end(in);
 405         for (ParIterator it = par_iterator_begin(in); it != end; ++it) {
 406                 string const name = it->layout()->name();
 407                 bool hasLayout = tclass2.hasLayout(name);
 408
 409                 if (hasLayout)
 410                         it->layout(tclass2[name]);
 411                 else
 412                         it->layout(tclass2.defaultLayout());
 413
 414                 if (!hasLayout && name != tclass1.defaultLayoutName()) {
 415                         docstring const s = bformat(
 416                                                  _("Layout had to be changed from\n%1$s to %2$s\n"
 417                                                 "because of class conversion from\n%3$s to %4$s"),
 418                          lyx::from_utf8(name), lyx::from_utf8(it->layout()->name()),
 419                          lyx::from_utf8(tclass1.name()), lyx::from_utf8(tclass2.name()));
 420                         // To warn the user that something had to be done.
 421                         errorlist.push_back(ErrorItem(_("Changed Layout"), s,
 422                                                       it->id(), 0,
 423                                                       it->size()));
 424                 }
 425         }
 426
 427         // character styles
 428         InsetIterator const i_end = inset_iterator_end(in);
 429         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 430                 if (it->lyxCode() == InsetBase::CHARSTYLE_CODE) {
 431                         InsetCharStyle & inset =
 432                                 static_cast<InsetCharStyle &>(*it);
 433                         string const name = inset.params().type;
 434                         CharStyles::iterator const found_cs =
 435                                 tclass2.charstyle(name);
 436                         if (found_cs == tclass2.charstyles().end()) {
 437                                 // The character style is undefined in tclass2
 438                                 inset.setUndefined();
 439                                 docstring const s = bformat(_(
 440                                         "Character style %1$s is "
 441                                         "undefined because of class "
 442                                         "conversion from\n%2$s to %3$s"),
 443                                          lyx::from_utf8(name), lyx::from_utf8(tclass1.name()),
 444                                          lyx::from_utf8(tclass2.name()));
 445                                 // To warn the user that something had to be done.
 446                                 errorlist.push_back(ErrorItem(
 447                                         _("Undefined character style"),
 448                                         s, it.paragraph().id(), it.pos(), it.pos() + 1));
 449                         } else if (inset.undefined()) {
 450                                 // The character style is undefined in
 451                                 // tclass1 and is defined in tclass2
 452                                 inset.setDefined(found_cs);
 453                         }
 454                 }
 455         }
 456 }
 457
 458
 459 std::vector<string> const availableSelections(Buffer const & buffer)
 460 {
 461         vector<string> selList;
 462
 463         CutStack::const_iterator cit = theCuts.begin();
 464         CutStack::const_iterator end = theCuts.end();
 465         for (; cit != end; ++cit) {
 466                 // we do not use cit-> here because gcc 2.9x does not
 467                 // like it (JMarc)
 468                 ParagraphList const & pars = (*cit).first;
 469                 string asciiSel;
 470                 ParagraphList::const_iterator pit = pars.begin();
 471                 ParagraphList::const_iterator pend = pars.end();
 472                 for (; pit != pend; ++pit) {
 473                         asciiSel += pit->asString(buffer, false);
 474                         if (asciiSel.size() > 25) {
 475                                 asciiSel.replace(22, string::npos, "...");
 476                                 break;
 477                         }
 478                 }
 479
 480                 selList.push_back(asciiSel);
 481         }
 482
 483         return selList;
 484 }
 485
 486
 487 lyx::size_type numberOfSelections()
 488 {
 489         return theCuts.size();
 490 }
 491
 492
 493 void cutSelection(LCursor & cur, bool doclear, bool realcut)
 494 {
 495         // This doesn't make sense, if there is no selection
 496         if (!cur.selection())
 497                 return;
 498
 499         // OK, we have a selection. This is always between cur.selBegin()
 500         // and cur.selEnd()
 501
 502         if (cur.inTexted()) {
 503                 LyXText * text = cur.text();
 504                 BOOST_ASSERT(text);
 505                 // Stuff what we got on the clipboard. Even if there is no selection.
 506
 507                 // There is a problem with having the stuffing here in that the
 508                 // larger the selection the slower LyX will get. This can be
 509                 // solved by running the line below only when the selection has
 510                 // finished. The solution used currently just works, to make it
 511                 // faster we need to be more clever and probably also have more
 512                 // calls to theApp->selection().put. (Lgb)
 513 //              theApp->selection().put(cur.selectionAsString(true));
 514
 515
 516                 // make sure that the depth behind the selection are restored, too
 517                 recordUndoSelection(cur);
 518                 pit_type begpit = cur.selBegin().pit();
 519                 pit_type endpit = cur.selEnd().pit();
 520
 521                 int endpos = cur.selEnd().pos();
 522
 523                 BufferParams const & bp = cur.buffer().params();
 524                 if (realcut) {
 525                         copySelectionHelper(cur.buffer(),
 526                                 text->paragraphs(),
 527                                 begpit, endpit,
 528                                 cur.selBegin().pos(), endpos,
 529                                 bp.textclass);
 530                 }
 531
 532                 boost::tie(endpit, endpos) =
 533                         eraseSelectionHelper(bp,
 534                                 text->paragraphs(),
 535                                 begpit, endpit,
 536                                 cur.selBegin().pos(), endpos,
 537                                 doclear);
 538
 539                 // sometimes necessary
 540                 if (doclear)
 541                         text->paragraphs()[begpit].stripLeadingSpaces();
 542
 543                 // cutSelection can invalidate the cursor so we need to set
 544                 // it anew. (Lgb)
 545                 // we prefer the end for when tracking changes
 546                 cur.pos() = endpos;
 547                 cur.pit() = endpit;
 548
 549                 // need a valid cursor. (Lgb)
 550                 cur.clearSelection();
 551                 updateLabels(cur.buffer());
 552
 553                 // tell tabular that a recent copy happened
 554                 dirtyTabularStack(false);
 555         }
 556
 557         if (cur.inMathed()) {
 558                 if (cur.selBegin().idx() != cur.selEnd().idx()) {
 559                         // The current selection spans more than one cell.
 560                         // Record all cells
 561                         recordUndoInset(cur);
 562                 } else {
 563                         // Record only the current cell to avoid a jumping
 564                         // cursor after undo
 565                         recordUndo(cur);
 566                 }
 567                 if (realcut)
 568                         copySelection(cur);
 569                 eraseSelection(cur);
 570         }
 571 }
 572
 573
 574 void copySelection(LCursor & cur)
 575 {
 576         // stuff the selection onto the X clipboard, from an explicit copy request
 577         theApp->clipboard().put(cur.selectionAsString(true));
 578
 579         // this doesn't make sense, if there is no selection
 580         if (!cur.selection())
 581                 return;
 582
 583         if (cur.inTexted()) {
 584                 LyXText * text = cur.text();
 585                 BOOST_ASSERT(text);
 586                 // ok we have a selection. This is always between cur.selBegin()
 587                 // and sel_end cursor
 588
 589                 // copy behind a space if there is one
 590                 ParagraphList & pars = text->paragraphs();
 591                 pos_type pos = cur.selBegin().pos();
 592                 pit_type par = cur.selBegin().pit();
 593                 while (pos < pars[par].size()
 594                                          && pars[par].isLineSeparator(pos)
 595                                          && (par != cur.selEnd().pit() || pos < cur.selEnd().pos()))
 596                         ++pos;
 597
 598                 copySelectionHelper(cur.buffer(), pars, par, cur.selEnd().pit(),
 599                         pos, cur.selEnd().pos(), cur.buffer().params().textclass);
 600         }
 601
 602         if (cur.inMathed()) {
 603                 //lyxerr << "copySelection in mathed" << endl;
 604                 ParagraphList pars;
 605                 pars.push_back(Paragraph());
 606                 BufferParams const & bp = cur.buffer().params();
 607                 pars.back().layout(bp.getLyXTextClass().defaultLayout());
 608                 for_each(pars.begin(), pars.end(), resetParagraph(cur.buffer()));
 609                 pars.back().insert(0, grabSelection(cur), LyXFont());
 610                 theCuts.push(make_pair(pars, bp.textclass));
 611         }
 612         // tell tabular that a recent copy happened
 613         dirtyTabularStack(false);
 614 }
 615
 616
 617 std::string getSelection(Buffer const & buf, size_t sel_index)
 618 {
 619         return sel_index < theCuts.size()
 620                 ? theCuts[sel_index].first.back().asString(buf, false)
 621                 : string();
 622 }
 623
 624
 625 void pasteParagraphList(LCursor & cur, ParagraphList const & parlist,
 626                         textclass_type textclass, ErrorList & errorList)
 627 {
 628         if (cur.inTexted()) {
 629                 LyXText * text = cur.text();
 630                 BOOST_ASSERT(text);
 631
 632                 recordUndo(cur);
 633
 634                 pit_type endpit;
 635                 PitPosPair ppp;
 636
 637                 boost::tie(ppp, endpit) =
 638                         pasteSelectionHelper(cur, parlist,
 639                                              textclass, errorList);
 640                 updateLabels(cur.buffer());
 641                 cur.clearSelection();
 642                 text->setCursor(cur, ppp.first, ppp.second);
 643         }
 644
 645         // mathed is handled in InsetMathNest/InsetMathGrid
 646         BOOST_ASSERT(!cur.inMathed());
 647 }
 648
 649
 650 void pasteSelection(LCursor & cur, ErrorList & errorList, size_t sel_index)
 651 {
 652         // this does not make sense, if there is nothing to paste
 653         if (!checkPastePossible(sel_index))
 654                 return;
 655
 656         pasteParagraphList(cur, theCuts[sel_index].first,
 657                            theCuts[sel_index].second, errorList);
 658         cur.setSelection();
 659 }
 660
 661
 662 // simple replacing. The font of the first selected character is used
 663 void replaceSelectionWithString(LCursor & cur, string const & str, bool backwards)
 664 {
 665         recordUndo(cur);
 666         DocIterator selbeg = cur.selectionBegin();
 667
 668         // Get font setting before we cut
 669         LyXFont const font =
 670                 selbeg.paragraph().getFontSettings(cur.buffer().params(), selbeg.pos());
 671
 672         // Insert the new string
 673         pos_type pos = cur.selEnd().pos();
 674         Paragraph & par = cur.selEnd().paragraph();
 675         string::const_iterator cit = str.begin();
 676         string::const_iterator end = str.end();
 677         for (; cit != end; ++cit, ++pos)
 678                 par.insertChar(pos, (*cit), font);
 679
 680         // Cut the selection
 681         cutSelection(cur, true, false);
 682
 683         // select the replacement
 684         if (backwards) {
 685                 selbeg.pos() += str.length();
 686                 cur.setSelection(selbeg, -str.length());
 687         } else
 688                 cur.setSelection(selbeg, str.length());
 689 }
 690
 691
 692 void replaceSelection(LCursor & cur)
 693 {
 694         if (cur.selection())
 695                 cutSelection(cur, true, false);
 696 }
 697
 698
 699 void eraseSelection(LCursor & cur)
 700 {
 701         //lyxerr << "LCursor::eraseSelection begin: " << cur << endl;
 702         CursorSlice const & i1 = cur.selBegin();
 703         CursorSlice const & i2 = cur.selEnd();
 704         if (i1.inset().asInsetMath()) {
 705                 cur.top() = i1;
 706                 if (i1.idx() == i2.idx()) {
 707                         i1.cell().erase(i1.pos(), i2.pos());
 708                         // We may have deleted i1.cell(cur.pos()).
 709                         // Make sure that pos is valid.
 710                         if (cur.pos() > cur.lastpos())
 711                                 cur.pos() = cur.lastpos();
 712                 } else {
 713                         InsetMath * p = i1.asInsetMath();
 714                         InsetBase::row_type r1, r2;
 715                         InsetBase::col_type c1, c2;
 716                         region(i1, i2, r1, r2, c1, c2);
 717                         for (InsetBase::row_type row = r1; row <= r2; ++row)
 718                                 for (InsetBase::col_type col = c1; col <= c2; ++col)
 719                                         p->cell(p->index(row, col)).clear();
 720                         // We've deleted the whole cell. Only pos 0 is valid.
 721                         cur.pos() = 0;
 722                 }
 723                 // need a valid cursor. (Lgb)
 724                 cur.clearSelection();
 725         } else {
 726                 lyxerr << "can't erase this selection 1" << endl;
 727         }
 728         //lyxerr << "LCursor::eraseSelection end: " << cur << endl;
 729 }
 730
 731
 732 void selDel(LCursor & cur)
 733 {
 734         //lyxerr << "LCursor::selDel" << endl;
 735         if (cur.selection())
 736                 eraseSelection(cur);
 737 }
 738
 739
 740 void selClearOrDel(LCursor & cur)
 741 {
 742         //lyxerr << "LCursor::selClearOrDel" << endl;
 743         if (lyxrc.auto_region_delete)
 744                 selDel(cur);
 745         else
 746                 cur.selection() = false;
 747 }
 748
 749
 750 string grabSelection(LCursor const & cur)
 751 {
 752         if (!cur.selection())
 753                 return string();
 754
 755         // FIXME: What is wrong with the following?
 756 #if 0
 757         std::ostringstream os;
 758         for (DocIterator dit = cur.selectionBegin();
 759              dit != cur.selectionEnd(); dit.forwardPos())
 760                 os << asString(dit.cell());
 761         return os.str();
 762 #endif
 763
 764         CursorSlice i1 = cur.selBegin();
 765         CursorSlice i2 = cur.selEnd();
 766
 767         if (i1.idx() == i2.idx()) {
 768                 if (i1.inset().asInsetMath()) {
 769                         MathArray::const_iterator it = i1.cell().begin();
 770                         return asString(MathArray(it + i1.pos(), it + i2.pos()));
 771                 } else {
 772                         return "unknown selection 1";
 773                 }
 774         }
 775
 776         InsetBase::row_type r1, r2;
 777         InsetBase::col_type c1, c2;
 778         region(i1, i2, r1, r2, c1, c2);
 779
 780         string data;
 781         if (i1.inset().asInsetMath()) {
 782                 for (InsetBase::row_type row = r1; row <= r2; ++row) {
 783                         if (row > r1)
 784                                 data += "\\\\";
 785                         for (InsetBase::col_type col = c1; col <= c2; ++col) {
 786                                 if (col > c1)
 787                                         data += '&';
 788                                 data += asString(i1.asInsetMath()->
 789                                         cell(i1.asInsetMath()->index(row, col)));
 790                         }
 791                 }
 792         } else {
 793                 data = "unknown selection 2";
 794         }
 795         return data;
 796 }
 797
 798
 799 void dirtyTabularStack(bool b)
 800 {
 801         dirty_tabular_stack_ = b;
 802 }
 803
 804
 805 bool tabularStackDirty()
 806 {
 807         return dirty_tabular_stack_;
 808 }
 809
 810
 811 } // namespace cap
 812 } // namespace lyx