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