src/CutAndPaste.cpp

   1 /*
   2  * \file CutAndPaste.cpp
   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  * \author Michael Gerz
  10  *
  11  * Full author contact details are available in file CREDITS.
  12  */
  13
  14 #include <config.h>
  15
  16 #include "CutAndPaste.h"
  17
  18 #include "Buffer.h"
  19 #include "buffer_funcs.h"
  20 #include "BufferParams.h"
  21 #include "BufferView.h"
  22 #include "Cursor.h"
  23 #include "debug.h"
  24 #include "ErrorList.h"
  25 #include "FuncRequest.h"
  26 #include "gettext.h"
  27 #include "InsetIterator.h"
  28 #include "Language.h"
  29 #include "lfuns.h"
  30 #include "LyXFunc.h"
  31 #include "LyXRC.h"
  32 #include "Text.h"
  33 #include "TextClassList.h"
  34 #include "Paragraph.h"
  35 #include "paragraph_funcs.h"
  36 #include "ParagraphParameters.h"
  37 #include "ParIterator.h"
  38 #include "Undo.h"
  39
  40 #include "insets/InsetCharStyle.h"
  41 #include "insets/InsetTabular.h"
  42
  43 #include "mathed/MathData.h"
  44 #include "mathed/InsetMath.h"
  45 #include "mathed/MathSupport.h"
  46
  47 #include "support/lstrings.h"
  48
  49 #include "frontends/Clipboard.h"
  50 #include "frontends/Selection.h"
  51
  52 #include <boost/current_function.hpp>
  53 #include <boost/tuple/tuple.hpp>
  54
  55 #include <string>
  56
  57 using std::endl;
  58 using std::for_each;
  59 using std::make_pair;
  60 using std::pair;
  61 using std::vector;
  62 using std::string;
  63
  64
  65 namespace lyx {
  66
  67 using support::bformat;
  68 using frontend::Clipboard;
  69
  70 namespace {
  71
  72 typedef std::pair<pit_type, int> PitPosPair;
  73
  74 typedef limited_stack<pair<ParagraphList, textclass_type> > CutStack;
  75
  76 CutStack theCuts(10);
  77 // persistent selection, cleared until the next selection
  78 CutStack selectionBuffer(1);
  79
  80 // store whether the tabular stack is newer than the normal copy stack
  81 // FIXME: this is a workaround for bug 1919. Should be removed for 1.5,
  82 // when we (hopefully) have a one-for-all paste mechanism.
  83 bool dirty_tabular_stack_ = false;
  84
  85
  86 void region(CursorSlice const & i1, CursorSlice const & i2,
  87         Inset::row_type & r1, Inset::row_type & r2,
  88         Inset::col_type & c1, Inset::col_type & c2)
  89 {
  90         Inset & p = i1.inset();
  91         c1 = p.col(i1.idx());
  92         c2 = p.col(i2.idx());
  93         if (c1 > c2)
  94                 std::swap(c1, c2);
  95         r1 = p.row(i1.idx());
  96         r2 = p.row(i2.idx());
  97         if (r1 > r2)
  98                 std::swap(r1, r2);
  99 }
 100
 101
 102 bool checkPastePossible(int index)
 103 {
 104         return size_t(index) < theCuts.size() && !theCuts[index].first.empty();
 105 }
 106
 107
 108 pair<PitPosPair, pit_type>
 109 pasteSelectionHelper(Cursor & cur, ParagraphList const & parlist,
 110                      textclass_type textclass, ErrorList & errorlist)
 111 {
 112         Buffer const & buffer = cur.buffer();
 113         pit_type pit = cur.pit();
 114         pos_type pos = cur.pos();
 115         ParagraphList & pars = cur.text()->paragraphs();
 116
 117         if (parlist.empty())
 118                 return make_pair(PitPosPair(pit, pos), pit);
 119
 120         BOOST_ASSERT (pos <= pars[pit].size());
 121
 122         // Make a copy of the CaP paragraphs.
 123         ParagraphList insertion = parlist;
 124         textclass_type const tc = buffer.params().textclass;
 125
 126         // Now remove all out of the pars which is NOT allowed in the
 127         // new environment and set also another font if that is required.
 128
 129         // Convert newline to paragraph break in ERT inset.
 130         // This should not be here!
 131         if (pars[pit].inInset() &&
 132             (pars[pit].inInset()->lyxCode() == Inset::ERT_CODE ||
 133                 pars[pit].inInset()->lyxCode() == Inset::LISTINGS_CODE)) {
 134                 for (ParagraphList::size_type i = 0; i < insertion.size(); ++i) {
 135                         for (pos_type j = 0; j < insertion[i].size(); ++j) {
 136                                 if (insertion[i].isNewline(j)) {
 137                                         // do not track deletion of newline
 138                                         insertion[i].eraseChar(j, false);
 139                                         breakParagraphConservative(
 140                                                         buffer.params(),
 141                                                         insertion, i, j);
 142                                 }
 143                         }
 144                 }
 145         }
 146
 147         // If we are in an inset which returns forceDefaultParagraphs,
 148         // set the paragraphs to default
 149         if (cur.inset().forceDefaultParagraphs(cur.idx())) {
 150                 Layout_ptr const layout =
 151                         buffer.params().getTextClass().defaultLayout();
 152                 ParagraphList::iterator const end = insertion.end();
 153                 for (ParagraphList::iterator par = insertion.begin();
 154                                 par != end; ++par)
 155                         par->layout(layout);
 156         }
 157
 158         // Make sure there is no class difference.
 159         InsetText in;
 160         // This works without copying any paragraph data because we have
 161         // a specialized swap method for ParagraphList. This is important
 162         // since we store pointers to insets at some places and we don't
 163         // want to invalidate them.
 164         insertion.swap(in.paragraphs());
 165         cap::switchBetweenClasses(textclass, tc, in, errorlist);
 166         insertion.swap(in.paragraphs());
 167
 168         ParagraphList::iterator tmpbuf = insertion.begin();
 169         int depth_delta = pars[pit].params().depth() - tmpbuf->params().depth();
 170
 171         depth_type max_depth = pars[pit].getMaxDepthAfter();
 172
 173         for (; tmpbuf != insertion.end(); ++tmpbuf) {
 174                 // If we have a negative jump so that the depth would
 175                 // go below 0 depth then we have to redo the delta to
 176                 // this new max depth level so that subsequent
 177                 // paragraphs are aligned correctly to this paragraph
 178                 // at level 0.
 179                 if (int(tmpbuf->params().depth()) + depth_delta < 0)
 180                         depth_delta = 0;
 181
 182                 // Set the right depth so that we are not too deep or shallow.
 183                 tmpbuf->params().depth(tmpbuf->params().depth() + depth_delta);
 184                 if (tmpbuf->params().depth() > max_depth)
 185                         tmpbuf->params().depth(max_depth);
 186
 187                 // Only set this from the 2nd on as the 2nd depends
 188                 // for maxDepth still on pit.
 189                 if (tmpbuf != insertion.begin())
 190                         max_depth = tmpbuf->getMaxDepthAfter();
 191
 192                 // Set the inset owner of this paragraph.
 193                 tmpbuf->setInsetOwner(pars[pit].inInset());
 194                 for (pos_type i = 0; i < tmpbuf->size(); ++i) {
 195                         if (tmpbuf->getChar(i) == Paragraph::META_INSET &&
 196                             !pars[pit].insetAllowed(tmpbuf->getInset(i)->lyxCode()))
 197                                 // do not track deletion of invalid insets
 198                                 tmpbuf->eraseChar(i--, false);
 199                 }
 200
 201                 tmpbuf->setChange(Change(buffer.params().trackChanges ?
 202                                          Change::INSERTED : Change::UNCHANGED));
 203         }
 204
 205         bool const empty = pars[pit].empty();
 206         if (!empty) {
 207                 // Make the buf exactly the same layout as the cursor
 208                 // paragraph.
 209                 insertion.begin()->makeSameLayout(pars[pit]);
 210         }
 211
 212         // Prepare the paragraphs and insets for insertion.
 213         // A couple of insets store buffer references so need updating.
 214         insertion.swap(in.paragraphs());
 215
 216         ParIterator fpit = par_iterator_begin(in);
 217         ParIterator fend = par_iterator_end(in);
 218
 219         for (; fpit != fend; ++fpit) {
 220                 InsetList::const_iterator lit = fpit->insetlist.begin();
 221                 InsetList::const_iterator eit = fpit->insetlist.end();
 222
 223                 for (; lit != eit; ++lit) {
 224                         switch (lit->inset->lyxCode()) {
 225                         case Inset::TABULAR_CODE: {
 226                                 InsetTabular * it = static_cast<InsetTabular*>(lit->inset);
 227                                 it->buffer(&buffer);
 228                                 break;
 229                         }
 230
 231                         default:
 232                                 break; // nothing
 233                         }
 234                 }
 235         }
 236         insertion.swap(in.paragraphs());
 237
 238         // Split the paragraph for inserting the buf if necessary.
 239         if (!empty)
 240                 breakParagraphConservative(buffer.params(), pars, pit, pos);
 241
 242         // Paste it!
 243         if (empty) {
 244                 pars.insert(boost::next(pars.begin(), pit),
 245                             insertion.begin(),
 246                             insertion.end());
 247
 248                 // merge the empty par with the last par of the insertion
 249                 mergeParagraph(buffer.params(), pars,
 250                                pit + insertion.size() - 1);
 251         } else {
 252                 pars.insert(boost::next(pars.begin(), pit + 1),
 253                             insertion.begin(),
 254                             insertion.end());
 255
 256                 // merge the first par of the insertion with the current par
 257                 mergeParagraph(buffer.params(), pars, pit);
 258         }
 259
 260         pit_type last_paste = pit + insertion.size() - 1;
 261
 262         // Store the new cursor position.
 263         pit = last_paste;
 264         pos = pars[last_paste].size();
 265
 266         // Join (conditionally) last pasted paragraph with next one, i.e.,
 267         // the tail of the spliced document paragraph
 268         if (!empty && last_paste + 1 != pit_type(pars.size())) {
 269                 if (pars[last_paste + 1].hasSameLayout(pars[last_paste])) {
 270                         mergeParagraph(buffer.params(), pars, last_paste);
 271                 } else if (pars[last_paste + 1].empty()) {
 272                         pars[last_paste + 1].makeSameLayout(pars[last_paste]);
 273                         mergeParagraph(buffer.params(), pars, last_paste);
 274                 } else if (pars[last_paste].empty()) {
 275                         pars[last_paste].makeSameLayout(pars[last_paste + 1]);
 276                         mergeParagraph(buffer.params(), pars, last_paste);
 277                 } else {
 278                         pars[last_paste + 1].stripLeadingSpaces(buffer.params().trackChanges);
 279                         ++last_paste;
 280                 }
 281         }
 282
 283         return make_pair(PitPosPair(pit, pos), last_paste + 1);
 284 }
 285
 286
 287 PitPosPair eraseSelectionHelper(BufferParams const & params,
 288         ParagraphList & pars,
 289         pit_type startpit, pit_type endpit,
 290         int startpos, int endpos, bool doclear)
 291 {
 292         // Start of selection is really invalid.
 293         if (startpit == pit_type(pars.size()) ||
 294             (startpos > pars[startpit].size()))
 295                 return PitPosPair(endpit, endpos);
 296
 297         // Start and end is inside same paragraph
 298         if (endpit == pit_type(pars.size()) || startpit == endpit) {
 299                 endpos -= pars[startpit].eraseChars(startpos, endpos, params.trackChanges);
 300                 return PitPosPair(endpit, endpos);
 301         }
 302
 303         for (pit_type pit = startpit; pit != endpit + 1;) {
 304                 pos_type const left  = (pit == startpit ? startpos : 0);
 305                 pos_type right = (pit == endpit ? endpos : pars[pit].size() + 1);
 306                 // FIXME: this is a quick fix for bug 3600. It stops a crash but the problem
 307                 // still remains unsolved (e.g. the second example in the bug report).
 308                 // c.f. http://bugzilla.lyx.org/show_bug.cgi?id=3600
 309                 if (right > pars[pit].size() + 1)
 310                         right = pars[pit].size() + 1;
 311
 312                 bool const merge = pars[pit].isMergedOnEndOfParDeletion(params.trackChanges);
 313
 314                 // Logically erase only, including the end-of-paragraph character
 315                 pars[pit].eraseChars(left, right, params.trackChanges);
 316
 317                 // Separate handling of paragraph break:
 318                 if (merge && pit != endpit &&
 319                     (pit + 1 != endpit || pars[pit].hasSameLayout(pars[pit + 1]))) {
 320                         pos_type const thissize = pars[pit].size();
 321                         if (doclear)
 322                                 pars[pit + 1].stripLeadingSpaces(params.trackChanges);
 323                         mergeParagraph(params, pars, pit);
 324                         --endpit;
 325                         if (pit == endpit)
 326                                 endpos += thissize;
 327                 } else
 328                         ++pit;
 329         }
 330
 331         // Ensure legal cursor pos:
 332         endpit = startpit;
 333         endpos = startpos;
 334         return PitPosPair(endpit, endpos);
 335 }
 336
 337
 338 void putClipboard(ParagraphList const & paragraphs, textclass_type textclass,
 339                   docstring const & plaintext)
 340 {
 341         // For some strange reason gcc 3.2 and 3.3 do not accept
 342         // Buffer buffer(string(), false);
 343         Buffer buffer("", false);
 344         buffer.setUnnamed(true);
 345         buffer.paragraphs() = paragraphs;
 346         buffer.params().textclass = textclass;
 347         std::ostringstream lyx;
 348         if (buffer.write(lyx))
 349                 theClipboard().put(lyx.str(), plaintext);
 350         else
 351                 theClipboard().put(string(), plaintext);
 352 }
 353
 354
 355 void copySelectionHelper(Buffer const & buf, ParagraphList & pars,
 356         pit_type startpit, pit_type endpit,
 357         int start, int end, textclass_type tc, CutStack & cutstack)
 358 {
 359         BOOST_ASSERT(0 <= start && start <= pars[startpit].size());
 360         BOOST_ASSERT(0 <= end && end <= pars[endpit].size());
 361         BOOST_ASSERT(startpit != endpit || start <= end);
 362
 363         // Clone the paragraphs within the selection.
 364         ParagraphList copy_pars(boost::next(pars.begin(), startpit),
 365                                 boost::next(pars.begin(), endpit + 1));
 366
 367         // Remove the end of the last paragraph; afterwards, remove the
 368         // beginning of the first paragraph. Keep this order - there may only
 369         // be one paragraph!  Do not track deletions here; this is an internal
 370         // action not visible to the user
 371
 372         Paragraph & back = copy_pars.back();
 373         back.eraseChars(end, back.size(), false);
 374         Paragraph & front = copy_pars.front();
 375         front.eraseChars(0, start, false);
 376
 377         ParagraphList::iterator it = copy_pars.begin();
 378         ParagraphList::iterator it_end = copy_pars.end();
 379
 380         for (; it != it_end; it++) {
 381                 // ERT paragraphs have the Language latex_language.
 382                 // This is invalid outside of ERT, so we need to change it
 383                 // to the buffer language.
 384                 if (it->ownerCode() == Inset::ERT_CODE || it->ownerCode() == Inset::LISTINGS_CODE) {
 385                         it->changeLanguage(buf.params(), latex_language,
 386                                            buf.getLanguage());
 387                 }
 388                 it->setInsetOwner(0);
 389         }
 390
 391         // do not copy text (also nested in insets) which is marked as deleted
 392         acceptChanges(copy_pars, buf.params());
 393
 394         cutstack.push(make_pair(copy_pars, tc));
 395 }
 396
 397 } // namespace anon
 398
 399
 400
 401
 402 namespace cap {
 403
 404 docstring grabAndEraseSelection(Cursor & cur)
 405 {
 406         if (!cur.selection())
 407                 return docstring();
 408         docstring res = grabSelection(cur);
 409         eraseSelection(cur);
 410         return res;
 411 }
 412
 413
 414 void switchBetweenClasses(textclass_type c1, textclass_type c2,
 415         InsetText & in, ErrorList & errorlist)
 416 {
 417         errorlist.clear();
 418
 419         BOOST_ASSERT(!in.paragraphs().empty());
 420         if (c1 == c2)
 421                 return;
 422
 423         TextClass const & tclass1 = textclasslist[c1];
 424         TextClass const & tclass2 = textclasslist[c2];
 425
 426         // layouts
 427         ParIterator end = par_iterator_end(in);
 428         for (ParIterator it = par_iterator_begin(in); it != end; ++it) {
 429                 docstring const name = it->layout()->name();
 430                 bool hasLayout = tclass2.hasLayout(name);
 431
 432                 if (hasLayout)
 433                         it->layout(tclass2[name]);
 434                 else
 435                         it->layout(tclass2.defaultLayout());
 436
 437                 if (!hasLayout && name != tclass1.defaultLayoutName()) {
 438                         docstring const s = bformat(
 439                                                  _("Layout had to be changed from\n%1$s to %2$s\n"
 440                                                 "because of class conversion from\n%3$s to %4$s"),
 441                          name, it->layout()->name(),
 442                          from_utf8(tclass1.name()), from_utf8(tclass2.name()));
 443                         // To warn the user that something had to be done.
 444                         errorlist.push_back(ErrorItem(_("Changed Layout"), s,
 445                                                       it->id(), 0,
 446                                                       it->size()));
 447                 }
 448         }
 449
 450         // character styles
 451         InsetIterator const i_end = inset_iterator_end(in);
 452         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 453                 if (it->lyxCode() == Inset::CHARSTYLE_CODE) {
 454                         InsetCharStyle & inset =
 455                                 static_cast<InsetCharStyle &>(*it);
 456                         string const name = inset.params().type;
 457                         CharStyles::iterator const found_cs =
 458                                 tclass2.charstyle(name);
 459                         if (found_cs == tclass2.charstyles().end()) {
 460                                 // The character style is undefined in tclass2
 461                                 inset.setUndefined();
 462                                 docstring const s = bformat(_(
 463                                         "Character style %1$s is "
 464                                         "undefined because of class "
 465                                         "conversion from\n%2$s to %3$s"),
 466                                          from_utf8(name), from_utf8(tclass1.name()),
 467                                          from_utf8(tclass2.name()));
 468                                 // To warn the user that something had to be done.
 469                                 errorlist.push_back(ErrorItem(
 470                                         _("Undefined character style"),
 471                                         s, it.paragraph().id(), it.pos(), it.pos() + 1));
 472                         } else if (inset.undefined()) {
 473                                 // The character style is undefined in
 474                                 // tclass1 and is defined in tclass2
 475                                 inset.setDefined(found_cs);
 476                         }
 477                 }
 478         }
 479 }
 480
 481
 482 std::vector<docstring> const availableSelections(Buffer const & buffer)
 483 {
 484         vector<docstring> selList;
 485
 486         CutStack::const_iterator cit = theCuts.begin();
 487         CutStack::const_iterator end = theCuts.end();
 488         for (; cit != end; ++cit) {
 489                 // we do not use cit-> here because gcc 2.9x does not
 490                 // like it (JMarc)
 491                 ParagraphList const & pars = (*cit).first;
 492                 docstring asciiSel;
 493                 ParagraphList::const_iterator pit = pars.begin();
 494                 ParagraphList::const_iterator pend = pars.end();
 495                 for (; pit != pend; ++pit) {
 496                         asciiSel += pit->asString(buffer, false);
 497                         if (asciiSel.size() > 25) {
 498                                 asciiSel.replace(22, docstring::npos,
 499                                                  from_ascii("..."));
 500                                 break;
 501                         }
 502                 }
 503
 504                 selList.push_back(asciiSel);
 505         }
 506
 507         return selList;
 508 }
 509
 510
 511 size_type numberOfSelections()
 512 {
 513         return theCuts.size();
 514 }
 515
 516
 517 void cutSelection(Cursor & cur, bool doclear, bool realcut)
 518 {
 519         // This doesn't make sense, if there is no selection
 520         if (!cur.selection())
 521                 return;
 522
 523         // OK, we have a selection. This is always between cur.selBegin()
 524         // and cur.selEnd()
 525
 526         if (cur.inTexted()) {
 527                 Text * text = cur.text();
 528                 BOOST_ASSERT(text);
 529
 530                 saveSelection(cur);
 531
 532                 // make sure that the depth behind the selection are restored, too
 533                 recordUndoSelection(cur);
 534                 pit_type begpit = cur.selBegin().pit();
 535                 pit_type endpit = cur.selEnd().pit();
 536
 537                 int endpos = cur.selEnd().pos();
 538
 539                 BufferParams const & bp = cur.buffer().params();
 540                 if (realcut) {
 541                         copySelectionHelper(cur.buffer(),
 542                                 text->paragraphs(),
 543                                 begpit, endpit,
 544                                 cur.selBegin().pos(), endpos,
 545                                 bp.textclass, theCuts);
 546                         // Stuff what we got on the clipboard.
 547                         // Even if there is no selection.
 548                         putClipboard(theCuts[0].first, theCuts[0].second,
 549                                 cur.selectionAsString(true));
 550                 }
 551
 552                 boost::tie(endpit, endpos) =
 553                         eraseSelectionHelper(bp,
 554                                 text->paragraphs(),
 555                                 begpit, endpit,
 556                                 cur.selBegin().pos(), endpos,
 557                                 doclear);
 558
 559                 // cutSelection can invalidate the cursor so we need to set
 560                 // it anew. (Lgb)
 561                 // we prefer the end for when tracking changes
 562                 cur.pos() = endpos;
 563                 cur.pit() = endpit;
 564
 565                 // sometimes necessary
 566                 if (doclear
 567                         && text->paragraphs()[begpit].stripLeadingSpaces(bp.trackChanges))
 568                         cur.fixIfBroken();
 569
 570                 // need a valid cursor. (Lgb)
 571                 cur.clearSelection();
 572                 updateLabels(cur.buffer());
 573
 574                 // tell tabular that a recent copy happened
 575                 dirtyTabularStack(false);
 576         }
 577
 578         if (cur.inMathed()) {
 579                 if (cur.selBegin().idx() != cur.selEnd().idx()) {
 580                         // The current selection spans more than one cell.
 581                         // Record all cells
 582                         recordUndoInset(cur);
 583                 } else {
 584                         // Record only the current cell to avoid a jumping
 585                         // cursor after undo
 586                         recordUndo(cur);
 587                 }
 588                 if (realcut)
 589                         copySelection(cur);
 590                 eraseSelection(cur);
 591         }
 592 }
 593
 594
 595 void copySelection(Cursor & cur)
 596 {
 597         copySelection(cur, cur.selectionAsString(true));
 598 }
 599
 600
 601 namespace {
 602
 603 void copySelectionToStack(Cursor & cur, CutStack & cutstack)
 604 {
 605         // this doesn't make sense, if there is no selection
 606         if (!cur.selection())
 607                 return;
 608
 609         // copySelection can not yet handle the case of cross idx selection
 610         if (cur.selBegin().idx() != cur.selEnd().idx())
 611                 return;
 612
 613         if (cur.inTexted()) {
 614                 Text * text = cur.text();
 615                 BOOST_ASSERT(text);
 616                 // ok we have a selection. This is always between cur.selBegin()
 617                 // and sel_end cursor
 618
 619                 // copy behind a space if there is one
 620                 ParagraphList & pars = text->paragraphs();
 621                 pos_type pos = cur.selBegin().pos();
 622                 pit_type par = cur.selBegin().pit();
 623                 while (pos < pars[par].size() &&
 624                        pars[par].isLineSeparator(pos) &&
 625                        (par != cur.selEnd().pit() || pos < cur.selEnd().pos()))
 626                         ++pos;
 627
 628                 copySelectionHelper(cur.buffer(), pars, par, cur.selEnd().pit(),
 629                         pos, cur.selEnd().pos(), cur.buffer().params().textclass, cutstack);
 630                 dirtyTabularStack(false);
 631         }
 632
 633         if (cur.inMathed()) {
 634                 //lyxerr << "copySelection in mathed" << endl;
 635                 ParagraphList pars;
 636                 Paragraph par;
 637                 BufferParams const & bp = cur.buffer().params();
 638                 par.layout(bp.getTextClass().defaultLayout());
 639                 par.insert(0, grabSelection(cur), Font(), Change(Change::UNCHANGED));
 640                 pars.push_back(par);
 641                 cutstack.push(make_pair(pars, bp.textclass));
 642         }
 643 }
 644
 645 }
 646
 647
 648 void copySelectionToStack()
 649 {
 650         if (!selectionBuffer.empty())
 651                 theCuts.push(selectionBuffer[0]);
 652 }
 653
 654
 655 void copySelection(Cursor & cur, docstring const & plaintext)
 656 {
 657         // In tablemode, because copy and paste actually use special table stack
 658         // we do not attemp to get selected paragraphs under cursor. Instead, a
 659         // paragraph with the plain text version is generated so that table cells
 660         // can be pasted as pure text somewhere else.
 661         if (cur.selBegin().idx() != cur.selEnd().idx()) {
 662                 ParagraphList pars;
 663                 Paragraph par;
 664                 BufferParams const & bp = cur.buffer().params();
 665                 par.layout(bp.getTextClass().defaultLayout());
 666                 par.insert(0, plaintext, Font(), Change(Change::UNCHANGED));
 667                 pars.push_back(par);
 668                 theCuts.push(make_pair(pars, bp.textclass));
 669         } else
 670                 copySelectionToStack(cur, theCuts);
 671
 672         // stuff the selection onto the X clipboard, from an explicit copy request
 673         putClipboard(theCuts[0].first, theCuts[0].second, plaintext);
 674 }
 675
 676
 677 void saveSelection(Cursor & cur)
 678 {
 679         // This function is called, not when a selection is formed, but when
 680         // a selection is cleared. Therefore, multiple keyboard selection
 681         // will not repeatively trigger this function (bug 3877).
 682         if (cur.selection()
 683             && cur.selBegin() == cur.bv().cursor().selBegin()
 684             && cur.selEnd() == cur.bv().cursor().selEnd()) {
 685                 LYXERR(Debug::ACTION) << BOOST_CURRENT_FUNCTION << ": `"
 686                            << to_utf8(cur.selectionAsString(true)) << "'."
 687                            << endl;
 688                 copySelectionToStack(cur, selectionBuffer);
 689         }
 690 }
 691
 692
 693 bool selection()
 694 {
 695         return !selectionBuffer.empty();
 696 }
 697
 698
 699 void clearSelection()
 700 {
 701         selectionBuffer.clear();
 702 }
 703
 704
 705 docstring getSelection(Buffer const & buf, size_t sel_index)
 706 {
 707         return sel_index < theCuts.size()
 708                 ? theCuts[sel_index].first.back().asString(buf, false)
 709                 : docstring();
 710 }
 711
 712
 713 void pasteParagraphList(Cursor & cur, ParagraphList const & parlist,
 714                         textclass_type textclass, ErrorList & errorList)
 715 {
 716         if (cur.inTexted()) {
 717                 Text * text = cur.text();
 718                 BOOST_ASSERT(text);
 719
 720                 pit_type endpit;
 721                 PitPosPair ppp;
 722
 723                 boost::tie(ppp, endpit) =
 724                         pasteSelectionHelper(cur, parlist,
 725                                              textclass, errorList);
 726                 updateLabels(cur.buffer());
 727                 cur.clearSelection();
 728                 text->setCursor(cur, ppp.first, ppp.second);
 729         }
 730
 731         // mathed is handled in InsetMathNest/InsetMathGrid
 732         BOOST_ASSERT(!cur.inMathed());
 733 }
 734
 735
 736 void pasteFromStack(Cursor & cur, ErrorList & errorList, size_t sel_index)
 737 {
 738         // this does not make sense, if there is nothing to paste
 739         if (!checkPastePossible(sel_index))
 740                 return;
 741
 742         recordUndo(cur);
 743         pasteParagraphList(cur, theCuts[sel_index].first,
 744                            theCuts[sel_index].second, errorList);
 745         cur.setSelection();
 746 }
 747
 748
 749 void pasteClipboard(Cursor & cur, ErrorList & errorList, bool asParagraphs)
 750 {
 751         // Use internal clipboard if it is the most recent one
 752         if (theClipboard().isInternal()) {
 753                 pasteFromStack(cur, errorList, 0);
 754                 return;
 755         }
 756
 757         // First try LyX format
 758         if (theClipboard().hasLyXContents()) {
 759                 string lyx = theClipboard().getAsLyX();
 760                 if (!lyx.empty()) {
 761                         // For some strange reason gcc 3.2 and 3.3 do not accept
 762                         // Buffer buffer(string(), false);
 763                         Buffer buffer("", false);
 764                         buffer.setUnnamed(true);
 765                         if (buffer.readString(lyx)) {
 766                                 recordUndo(cur);
 767                                 pasteParagraphList(cur, buffer.paragraphs(),
 768                                         buffer.params().textclass, errorList);
 769                                 cur.setSelection();
 770                                 return;
 771                         }
 772                 }
 773         }
 774
 775         // Then try plain text
 776         docstring const text = theClipboard().getAsText();
 777         if (text.empty())
 778                 return;
 779         recordUndo(cur);
 780         if (asParagraphs)
 781                 cur.text()->insertStringAsParagraphs(cur, text);
 782         else
 783                 cur.text()->insertStringAsLines(cur, text);
 784 }
 785
 786
 787 void pasteSelection(Cursor & cur, ErrorList & errorList)
 788 {
 789         if (selectionBuffer.empty())
 790                 return;
 791         recordUndo(cur);
 792         pasteParagraphList(cur, selectionBuffer[0].first,
 793                            selectionBuffer[0].second, errorList);
 794 }
 795
 796
 797 void replaceSelectionWithString(Cursor & cur, docstring const & str, bool backwards)
 798 {
 799         recordUndo(cur);
 800         DocIterator selbeg = cur.selectionBegin();
 801
 802         // Get font setting before we cut
 803         Font const font =
 804                 selbeg.paragraph().getFontSettings(cur.buffer().params(), selbeg.pos());
 805
 806         // Insert the new string
 807         pos_type pos = cur.selEnd().pos();
 808         Paragraph & par = cur.selEnd().paragraph();
 809         docstring::const_iterator cit = str.begin();
 810         docstring::const_iterator end = str.end();
 811         for (; cit != end; ++cit, ++pos)
 812                 par.insertChar(pos, *cit, font, cur.buffer().params().trackChanges);
 813
 814         // Cut the selection
 815         cutSelection(cur, true, false);
 816
 817         // select the replacement
 818         if (backwards) {
 819                 selbeg.pos() += str.length();
 820                 cur.setSelection(selbeg, -int(str.length()));
 821         } else
 822                 cur.setSelection(selbeg, str.length());
 823 }
 824
 825
 826 void replaceSelection(Cursor & cur)
 827 {
 828         if (cur.selection())
 829                 cutSelection(cur, true, false);
 830 }
 831
 832
 833 void eraseSelection(Cursor & cur)
 834 {
 835         //lyxerr << "cap::eraseSelection begin: " << cur << endl;
 836         CursorSlice const & i1 = cur.selBegin();
 837         CursorSlice const & i2 = cur.selEnd();
 838         if (i1.inset().asInsetMath()) {
 839                 saveSelection(cur);
 840                 cur.top() = i1;
 841                 if (i1.idx() == i2.idx()) {
 842                         i1.cell().erase(i1.pos(), i2.pos());
 843                         // We may have deleted i1.cell(cur.pos()).
 844                         // Make sure that pos is valid.
 845                         if (cur.pos() > cur.lastpos())
 846                                 cur.pos() = cur.lastpos();
 847                 } else {
 848                         InsetMath * p = i1.asInsetMath();
 849                         Inset::row_type r1, r2;
 850                         Inset::col_type c1, c2;
 851                         region(i1, i2, r1, r2, c1, c2);
 852                         for (Inset::row_type row = r1; row <= r2; ++row)
 853                                 for (Inset::col_type col = c1; col <= c2; ++col)
 854                                         p->cell(p->index(row, col)).clear();
 855                         // We've deleted the whole cell. Only pos 0 is valid.
 856                         cur.pos() = 0;
 857                 }
 858                 // need a valid cursor. (Lgb)
 859                 cur.clearSelection();
 860         } else {
 861                 lyxerr << "can't erase this selection 1" << endl;
 862         }
 863         //lyxerr << "cap::eraseSelection end: " << cur << endl;
 864 }
 865
 866
 867 void selDel(Cursor & cur)
 868 {
 869         //lyxerr << "cap::selDel" << endl;
 870         if (cur.selection())
 871                 eraseSelection(cur);
 872 }
 873
 874
 875 void selClearOrDel(Cursor & cur)
 876 {
 877         //lyxerr << "cap::selClearOrDel" << endl;
 878         if (lyxrc.auto_region_delete)
 879                 selDel(cur);
 880         else
 881                 cur.selection() = false;
 882 }
 883
 884
 885 docstring grabSelection(Cursor const & cur)
 886 {
 887         if (!cur.selection())
 888                 return docstring();
 889
 890         // FIXME: What is wrong with the following?
 891 #if 0
 892         std::ostringstream os;
 893         for (DocIterator dit = cur.selectionBegin();
 894              dit != cur.selectionEnd(); dit.forwardPos())
 895                 os << asString(dit.cell());
 896         return os.str();
 897 #endif
 898
 899         CursorSlice i1 = cur.selBegin();
 900         CursorSlice i2 = cur.selEnd();
 901
 902         if (i1.idx() == i2.idx()) {
 903                 if (i1.inset().asInsetMath()) {
 904                         MathData::const_iterator it = i1.cell().begin();
 905                         return asString(MathData(it + i1.pos(), it + i2.pos()));
 906                 } else {
 907                         return from_ascii("unknown selection 1");
 908                 }
 909         }
 910
 911         Inset::row_type r1, r2;
 912         Inset::col_type c1, c2;
 913         region(i1, i2, r1, r2, c1, c2);
 914
 915         docstring data;
 916         if (i1.inset().asInsetMath()) {
 917                 for (Inset::row_type row = r1; row <= r2; ++row) {
 918                         if (row > r1)
 919                                 data += "\\\\";
 920                         for (Inset::col_type col = c1; col <= c2; ++col) {
 921                                 if (col > c1)
 922                                         data += '&';
 923                                 data += asString(i1.asInsetMath()->
 924                                         cell(i1.asInsetMath()->index(row, col)));
 925                         }
 926                 }
 927         } else {
 928                 data = from_ascii("unknown selection 2");
 929         }
 930         return data;
 931 }
 932
 933
 934 void dirtyTabularStack(bool b)
 935 {
 936         dirty_tabular_stack_ = b;
 937 }
 938
 939
 940 bool tabularStackDirty()
 941 {
 942         return dirty_tabular_stack_;
 943 }
 944
 945
 946 } // namespace cap
 947
 948 } // namespace lyx