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