src/text2.C

   1 /* This file is part of
   2  * ======================================================
   3  *
   4  *           LyX, The Document Processor
   5  *
   6  *           Copyright 1995 Matthias Ettrich
   7  *           Copyright 1995-2001 The LyX Team.
   8  *
   9  * ====================================================== */
  10
  11 #include <config.h>
  12
  13 #include "lyxtext.h"
  14 #include "LString.h"
  15 #include "Lsstream.h"
  16 #include "paragraph.h"
  17 #include "funcrequest.h"
  18 #include "frontends/LyXView.h"
  19 #include "undo_funcs.h"
  20 #include "buffer.h"
  21 #include "buffer_funcs.h"
  22 #include "bufferparams.h"
  23 #include "errorlist.h"
  24 #include "gettext.h"
  25 #include "BufferView.h"
  26 #include "CutAndPaste.h"
  27 #include "frontends/Painter.h"
  28 #include "frontends/font_metrics.h"
  29 #include "debug.h"
  30 #include "lyxrc.h"
  31 #include "lyxrow.h"
  32 #include "FloatList.h"
  33 #include "language.h"
  34 #include "ParagraphParameters.h"
  35 #include "counters.h"
  36 #include "lyxrow_funcs.h"
  37 #include "metricsinfo.h"
  38 #include "paragraph_funcs.h"
  39
  40 #include "insets/insetbibitem.h"
  41 #include "insets/insetenv.h"
  42 #include "insets/insetfloat.h"
  43 #include "insets/insetwrap.h"
  44
  45 #include "support/LAssert.h"
  46 #include "support/textutils.h"
  47 #include "support/lstrings.h"
  48
  49 #include <boost/tuple/tuple.hpp>
  50
  51 #include <algorithm>
  52
  53 using namespace lyx::support;
  54
  55 using std::vector;
  56 using std::copy;
  57 using std::endl;
  58 using std::find;
  59 using std::pair;
  60 using lyx::pos_type;
  61
  62
  63 LyXText::LyXText(BufferView * bv)
  64         : height(0), width(0), anchor_row_offset_(0),
  65           inset_owner(0), the_locking_inset(0), bv_owner(bv)
  66 {
  67         anchor_row_ = rows().end();
  68 }
  69
  70
  71 LyXText::LyXText(BufferView * bv, InsetText * inset)
  72         : height(0), width(0), anchor_row_offset_(0),
  73           inset_owner(inset), the_locking_inset(0), bv_owner(bv)
  74 {
  75         anchor_row_ = rows().end();
  76 }
  77
  78
  79 void LyXText::init(BufferView * bview)
  80 {
  81         bv_owner = bview;
  82
  83         rowlist_.clear();
  84         width = height = 0;
  85
  86         anchor_row_ = rows().end();
  87         anchor_row_offset_ = 0;
  88
  89         current_font = getFont(ownerParagraphs().begin(), 0);
  90
  91         redoParagraphs(ownerParagraphs().begin(), ownerParagraphs().end());
  92
  93         setCursorIntern(rowlist_.begin()->par(), 0);
  94         selection.cursor = cursor;
  95
  96         updateCounters();
  97 }
  98
  99
 100 // Gets the fully instantiated font at a given position in a paragraph
 101 // Basically the same routine as Paragraph::getFont() in paragraph.C.
 102 // The difference is that this one is used for displaying, and thus we
 103 // are allowed to make cosmetic improvements. For instance make footnotes
 104 // smaller. (Asger)
 105 // If position is -1, we get the layout font of the paragraph.
 106 // If position is -2, we get the font of the manual label of the paragraph.
 107 LyXFont LyXText::getFont(ParagraphList::iterator pit, pos_type pos) const
 108 {
 109         Assert(pos >= 0);
 110
 111         LyXLayout_ptr const & layout = pit->layout();
 112 #warning broken?
 113         BufferParams const & params = bv()->buffer()->params;
 114
 115         // We specialize the 95% common case:
 116         if (!pit->getDepth()) {
 117                 if (layout->labeltype == LABEL_MANUAL
 118                     && pos < pit->beginningOfBody()) {
 119                         // 1% goes here
 120                         LyXFont f = pit->getFontSettings(params, pos);
 121                         if (pit->inInset())
 122                                 pit->inInset()->getDrawFont(f);
 123                         return f.realize(layout->reslabelfont);
 124                 } else {
 125                         LyXFont f = pit->getFontSettings(params, pos);
 126                         if (pit->inInset())
 127                                 pit->inInset()->getDrawFont(f);
 128                         return f.realize(layout->resfont);
 129                 }
 130         }
 131
 132         // The uncommon case need not be optimized as much
 133
 134         LyXFont layoutfont;
 135
 136         if (pos < pit->beginningOfBody()) {
 137                 // 1% goes here
 138                 layoutfont = layout->labelfont;
 139         } else {
 140                 // 99% goes here
 141                 layoutfont = layout->font;
 142         }
 143
 144         LyXFont tmpfont = pit->getFontSettings(params, pos);
 145         tmpfont.realize(layoutfont);
 146
 147         if (pit->inInset())
 148                 pit->inInset()->getDrawFont(tmpfont);
 149
 150         // Realize with the fonts of lesser depth.
 151         tmpfont.realize(outerFont(pit, ownerParagraphs()));
 152         tmpfont.realize(defaultfont_);
 153
 154         return tmpfont;
 155 }
 156
 157
 158 LyXFont LyXText::getLayoutFont(ParagraphList::iterator pit) const
 159 {
 160         LyXLayout_ptr const & layout = pit->layout();
 161
 162         if (!pit->getDepth())
 163                 return layout->resfont;
 164
 165         LyXFont font = layout->font;
 166         // Realize with the fonts of lesser depth.
 167         font.realize(outerFont(pit, ownerParagraphs()));
 168         font.realize(defaultfont_);
 169
 170         return font;
 171 }
 172
 173
 174 LyXFont LyXText::getLabelFont(ParagraphList::iterator pit) const
 175 {
 176         LyXLayout_ptr const & layout = pit->layout();
 177
 178         if (!pit->getDepth())
 179                 return layout->reslabelfont;
 180
 181         LyXFont font = layout->labelfont;
 182         // Realize with the fonts of lesser depth.
 183         font.realize(outerFont(pit, ownerParagraphs()));
 184         font.realize(defaultfont_);
 185
 186         return font;
 187 }
 188
 189
 190 void LyXText::setCharFont(ParagraphList::iterator pit,
 191                           pos_type pos, LyXFont const & fnt,
 192                           bool toggleall)
 193 {
 194         BufferParams const & params = bv()->buffer()->params;
 195         LyXFont font = getFont(pit, pos);
 196         font.update(fnt, params.language, toggleall);
 197         // Let the insets convert their font
 198         if (pit->isInset(pos)) {
 199                 InsetOld * inset = pit->getInset(pos);
 200                 if (isEditableInset(inset)) {
 201                         static_cast<UpdatableInset *>(inset)
 202                                 ->setFont(bv(), fnt, toggleall, true);
 203                 }
 204         }
 205
 206         // Plug through to version below:
 207         setCharFont(pit, pos, font);
 208 }
 209
 210
 211 void LyXText::setCharFont(
 212         ParagraphList::iterator pit, pos_type pos, LyXFont const & fnt)
 213 {
 214         LyXFont font = fnt;
 215         LyXLayout_ptr const & layout = pit->layout();
 216
 217         // Get concrete layout font to reduce against
 218         LyXFont layoutfont;
 219
 220         if (pos < pit->beginningOfBody())
 221                 layoutfont = layout->labelfont;
 222         else
 223                 layoutfont = layout->font;
 224
 225         // Realize against environment font information
 226         if (pit->getDepth()) {
 227                 ParagraphList::iterator tp = pit;
 228                 while (!layoutfont.resolved() &&
 229                        tp != ownerParagraphs().end() &&
 230                        tp->getDepth()) {
 231                         tp = outerHook(tp, ownerParagraphs());
 232                         if (tp != ownerParagraphs().end())
 233                                 layoutfont.realize(tp->layout()->font);
 234                 }
 235         }
 236
 237         layoutfont.realize(defaultfont_);
 238
 239         // Now, reduce font against full layout font
 240         font.reduce(layoutfont);
 241
 242         pit->setFont(pos, font);
 243 }
 244
 245
 246 // removes the row and reset the touched counters
 247 void LyXText::removeRow(RowList::iterator rit)
 248 {
 249         if (anchor_row_ == rit) {
 250                 if (rit != rows().begin()) {
 251                         anchor_row_ = boost::prior(rit);
 252                         anchor_row_offset_ += anchor_row_->height();
 253                 } else {
 254                         anchor_row_ = boost::next(rit);
 255                         anchor_row_offset_ -= rit->height();
 256                 }
 257         }
 258
 259         // the text becomes smaller
 260         height -= rit->height();
 261
 262         rowlist_.erase(rit);
 263 }
 264
 265
 266 // remove all following rows of the paragraph of the specified row.
 267 void LyXText::removeParagraph(RowList::iterator rit)
 268 {
 269         ParagraphList::iterator tmppit = rit->par();
 270         ++rit;
 271
 272         while (rit != rows().end() && rit->par() == tmppit) {
 273                 RowList::iterator tmprit = boost::next(rit);
 274                 removeRow(rit);
 275                 rit = tmprit;
 276         }
 277 }
 278
 279
 280 void LyXText::insertParagraph(ParagraphList::iterator pit,
 281                               RowList::iterator rit)
 282 {
 283         // insert a new row, starting at position 0
 284         rit = rowlist_.insert(rit, Row(pit, 0));
 285
 286         // and now append the whole paragraph before the new row
 287         appendParagraph(rit);
 288 }
 289
 290
 291 InsetOld * LyXText::getInset() const
 292 {
 293         ParagraphList::iterator pit = cursor.par();
 294         pos_type const pos = cursor.pos();
 295
 296         if (pos < pit->size() && pit->isInset(pos)) {
 297                 return pit->getInset(pos);
 298         }
 299         return 0;
 300 }
 301
 302
 303 void LyXText::toggleInset()
 304 {
 305         InsetOld * inset = getInset();
 306         // is there an editable inset at cursor position?
 307         if (!isEditableInset(inset)) {
 308                 // No, try to see if we are inside a collapsable inset
 309                 if (inset_owner && inset_owner->owner()
 310                     && inset_owner->owner()->isOpen()) {
 311                         bv()->unlockInset(inset_owner->owner());
 312                         inset_owner->owner()->close(bv());
 313                         bv()->getLyXText()->cursorRight(bv());
 314                 }
 315                 return;
 316         }
 317         //bv()->owner()->message(inset->editMessage());
 318
 319         // do we want to keep this?? (JMarc)
 320         if (!isHighlyEditableInset(inset))
 321                 recordUndo(bv(), Undo::ATOMIC);
 322
 323         if (inset->isOpen()) {
 324                 inset->close(bv());
 325         } else {
 326                 inset->open(bv());
 327         }
 328
 329         bv()->updateInset(inset);
 330 }
 331
 332
 333 /* used in setlayout */
 334 // Asger is not sure we want to do this...
 335 void LyXText::makeFontEntriesLayoutSpecific(BufferParams const & params,
 336                                             Paragraph & par)
 337 {
 338         LyXLayout_ptr const & layout = par.layout();
 339         pos_type const psize = par.size();
 340
 341         LyXFont layoutfont;
 342         for (pos_type pos = 0; pos < psize; ++pos) {
 343                 if (pos < par.beginningOfBody())
 344                         layoutfont = layout->labelfont;
 345                 else
 346                         layoutfont = layout->font;
 347
 348                 LyXFont tmpfont = par.getFontSettings(params, pos);
 349                 tmpfont.reduce(layoutfont);
 350                 par.setFont(pos, tmpfont);
 351         }
 352 }
 353
 354
 355 ParagraphList::iterator
 356 LyXText::setLayout(LyXCursor & cur, LyXCursor & sstart_cur,
 357                    LyXCursor & send_cur,
 358                    string const & layout)
 359 {
 360         ParagraphList::iterator endpit = boost::next(send_cur.par());
 361         ParagraphList::iterator undoendpit = endpit;
 362         ParagraphList::iterator pars_end = ownerParagraphs().end();
 363
 364         if (endpit != pars_end && endpit->getDepth()) {
 365                 while (endpit != pars_end && endpit->getDepth()) {
 366                         ++endpit;
 367                         undoendpit = endpit;
 368                 }
 369         } else if (endpit != pars_end) {
 370                 // because of parindents etc.
 371                 ++endpit;
 372         }
 373
 374         recordUndo(bv(), Undo::ATOMIC, sstart_cur.par(), boost::prior(undoendpit));
 375
 376         // ok we have a selection. This is always between sstart_cur
 377         // and sel_end cursor
 378         cur = sstart_cur;
 379         ParagraphList::iterator pit = sstart_cur.par();
 380         ParagraphList::iterator epit = boost::next(send_cur.par());
 381
 382         LyXLayout_ptr const & lyxlayout =
 383                 bv()->buffer()->params.getLyXTextClass()[layout];
 384
 385         do {
 386                 pit->applyLayout(lyxlayout);
 387                 makeFontEntriesLayoutSpecific(bv()->buffer()->params, *pit);
 388                 ParagraphList::iterator fppit = pit;
 389                 fppit->params().spaceTop(lyxlayout->fill_top ?
 390                                          VSpace(VSpace::VFILL)
 391                                          : VSpace(VSpace::NONE));
 392                 fppit->params().spaceBottom(lyxlayout->fill_bottom ?
 393                                             VSpace(VSpace::VFILL)
 394                                             : VSpace(VSpace::NONE));
 395                 if (lyxlayout->margintype == MARGIN_MANUAL)
 396                         pit->setLabelWidthString(lyxlayout->labelstring());
 397                 cur.par(pit);
 398                 ++pit;
 399         } while (pit != epit);
 400
 401         return endpit;
 402 }
 403
 404
 405 // set layout over selection and make a total rebreak of those paragraphs
 406 void LyXText::setLayout(string const & layout)
 407 {
 408         LyXCursor tmpcursor = cursor;  // store the current cursor
 409
 410         // if there is no selection just set the layout
 411         // of the current paragraph
 412         if (!selection.set()) {
 413                 selection.start = cursor;  // dummy selection
 414                 selection.end = cursor;
 415         }
 416
 417         // special handling of new environment insets
 418         BufferParams const & params = bv()->buffer()->params;
 419         LyXLayout_ptr const & lyxlayout = params.getLyXTextClass()[layout];
 420         if (lyxlayout->is_environment) {
 421                 // move everything in a new environment inset
 422                 lyxerr << "setting layout " << layout << endl;
 423                 bv()->owner()->dispatch(FuncRequest(LFUN_HOME));
 424                 bv()->owner()->dispatch(FuncRequest(LFUN_ENDSEL));
 425                 bv()->owner()->dispatch(FuncRequest(LFUN_CUT));
 426                 InsetOld * inset = new InsetEnvironment(params, layout);
 427                 if (bv()->insertInset(inset)) {
 428                         //inset->edit(bv());
 429                         //bv()->owner()->dispatch(FuncRequest(LFUN_PASTE));
 430                 }
 431                 else
 432                         delete inset;
 433                 return;
 434         }
 435
 436         ParagraphList::iterator endpit = setLayout(cursor, selection.start,
 437                                                    selection.end, layout);
 438         redoParagraphs(selection.start.par(), endpit);
 439
 440         // we have to reset the selection, because the
 441         // geometry could have changed
 442         setCursor(selection.start.par(), selection.start.pos(), false);
 443         selection.cursor = cursor;
 444         setCursor(selection.end.par(), selection.end.pos(), false);
 445         updateCounters();
 446         clearSelection();
 447         setSelection();
 448         setCursor(tmpcursor.par(), tmpcursor.pos(), true);
 449 }
 450
 451
 452 bool LyXText::changeDepth(bv_funcs::DEPTH_CHANGE type, bool test_only)
 453 {
 454         ParagraphList::iterator pit(cursor.par());
 455         ParagraphList::iterator end(cursor.par());
 456         ParagraphList::iterator start = pit;
 457
 458         if (selection.set()) {
 459                 pit = selection.start.par();
 460                 end = selection.end.par();
 461                 start = pit;
 462         }
 463
 464         ParagraphList::iterator pastend = boost::next(end);
 465
 466         if (!test_only)
 467                 recordUndo(bv(), Undo::ATOMIC, start, end);
 468
 469         bool changed = false;
 470
 471         int prev_after_depth = 0;
 472 #warning parlist ... could be nicer ?
 473         if (start != ownerParagraphs().begin()) {
 474                 prev_after_depth = boost::prior(start)->getMaxDepthAfter();
 475         }
 476
 477         while (true) {
 478                 int const depth = pit->params().depth();
 479                 if (type == bv_funcs::INC_DEPTH) {
 480                         if (depth < prev_after_depth
 481                             && pit->layout()->labeltype != LABEL_BIBLIO) {
 482                                 changed = true;
 483                                 if (!test_only) {
 484                                         pit->params().depth(depth + 1);
 485                                 }
 486
 487                         }
 488                 } else if (depth) {
 489                         changed = true;
 490                         if (!test_only)
 491                                 pit->params().depth(depth - 1);
 492                 }
 493
 494                 prev_after_depth = pit->getMaxDepthAfter();
 495
 496                 if (pit == end) {
 497                         break;
 498                 }
 499
 500                 ++pit;
 501         }
 502
 503         if (test_only)
 504                 return changed;
 505
 506
 507         redoParagraphs(start, pastend);
 508
 509         // We need to actually move the text->cursor. I don't
 510         // understand why ...
 511         LyXCursor tmpcursor = cursor;
 512
 513         // we have to reset the visual selection because the
 514         // geometry could have changed
 515         if (selection.set()) {
 516                 setCursor(selection.start.par(), selection.start.pos());
 517                 selection.cursor = cursor;
 518                 setCursor(selection.end.par(), selection.end.pos());
 519         }
 520
 521         // this handles the counter labels, and also fixes up
 522         // depth values for follow-on (child) paragraphs
 523         updateCounters();
 524
 525         setSelection();
 526         setCursor(tmpcursor.par(), tmpcursor.pos());
 527
 528         return changed;
 529 }
 530
 531
 532 // set font over selection and make a total rebreak of those paragraphs
 533 void LyXText::setFont(LyXFont const & font, bool toggleall)
 534 {
 535         // if there is no selection just set the current_font
 536         if (!selection.set()) {
 537                 // Determine basis font
 538                 LyXFont layoutfont;
 539                 if (cursor.pos() < cursor.par()->beginningOfBody()) {
 540                         layoutfont = getLabelFont(cursor.par());
 541                 } else {
 542                         layoutfont = getLayoutFont(cursor.par());
 543                 }
 544                 // Update current font
 545                 real_current_font.update(font,
 546                                          bv()->buffer()->params.language,
 547                                          toggleall);
 548
 549                 // Reduce to implicit settings
 550                 current_font = real_current_font;
 551                 current_font.reduce(layoutfont);
 552                 // And resolve it completely
 553                 real_current_font.realize(layoutfont);
 554
 555                 return;
 556         }
 557
 558         LyXCursor tmpcursor = cursor; // store the current cursor
 559
 560         // ok we have a selection. This is always between sel_start_cursor
 561         // and sel_end cursor
 562
 563         recordUndo(bv(), Undo::ATOMIC, selection.start.par(), selection.end.par());
 564         freezeUndo();
 565         cursor = selection.start;
 566         while (cursor.par() != selection.end.par() ||
 567                cursor.pos() < selection.end.pos())
 568         {
 569                 if (cursor.pos() < cursor.par()->size()) {
 570                         // an open footnote should behave like a closed one
 571                         setCharFont(cursor.par(), cursor.pos(),
 572                                     font, toggleall);
 573                         cursor.pos(cursor.pos() + 1);
 574                 } else {
 575                         cursor.pos(0);
 576                         cursor.par(boost::next(cursor.par()));
 577                 }
 578         }
 579         unFreezeUndo();
 580
 581         redoParagraph(selection.start.par());
 582
 583         // we have to reset the selection, because the
 584         // geometry could have changed, but we keep
 585         // it for user convenience
 586         setCursor(selection.start.par(), selection.start.pos());
 587         selection.cursor = cursor;
 588         setCursor(selection.end.par(), selection.end.pos());
 589         setSelection();
 590         setCursor(tmpcursor.par(), tmpcursor.pos(), true,
 591                   tmpcursor.boundary());
 592 }
 593
 594
 595 void LyXText::redoHeightOfParagraph()
 596 {
 597         RowList::iterator tmprow = cursorRow();
 598
 599         setHeightOfRow(tmprow);
 600
 601         while (tmprow != rows().begin()
 602                && boost::prior(tmprow)->par() == tmprow->par()) {
 603                 --tmprow;
 604                 setHeightOfRow(tmprow);
 605         }
 606
 607         setCursor(cursor.par(), cursor.pos(), false, cursor.boundary());
 608 }
 609
 610
 611 RowList::iterator LyXText::firstRow(ParagraphList::iterator pit)
 612 {
 613         RowList::iterator rit;
 614         for (rit = rows().begin(); rit != rows().end(); ++rit)
 615                 if (rit->par() == pit)
 616                         break;
 617         return rit;
 618 }
 619
 620
 621 // rebreaks all paragraphs between the specified pars
 622 // This function is needed after SetLayout and SetFont etc.
 623 void LyXText::redoParagraphs(ParagraphList::iterator start,
 624   ParagraphList::iterator end)
 625 {
 626         for ( ; start != end; ++start)
 627                 redoParagraph(start);
 628 }
 629
 630
 631 void LyXText::redoParagraph(ParagraphList::iterator pit)
 632 {
 633         RowList::iterator rit = firstRow(pit);
 634
 635         // remove paragraph from rowlist
 636         while (rit != rows().end() && rit->par() == pit) {
 637                 RowList::iterator rit2 = rit++;
 638                 removeRow(rit2);
 639         }
 640
 641         // reinsert the paragraph
 642         // insert a new row, starting at position 0
 643         Row newrow(pit, 0);
 644         rit = rowlist_.insert(rit, newrow);
 645         //newrow.dump("newrow: ");
 646
 647         // and now append the whole paragraph before the new row
 648         pos_type const last = rit->par()->size();
 649         bool done = false;
 650
 651         do {
 652                 pos_type z = rowBreakPoint(*rit);
 653
 654                 RowList::iterator tmprow = rit;
 655                 //tmprow->dump("tmprow: ");
 656
 657                 if (z < last) {
 658                         ++z;
 659                         Row newrow(rit->par(), z);
 660                         //newrow.dump("newrow2: ");
 661                         rit = rowlist_.insert(boost::next(rit), newrow);
 662                 } else {
 663                         done = true;
 664                 }
 665
 666                 // Set the dimensions of the row
 667                 // fixed fill setting now by calling inset->update() in
 668                 // SingleWidth when needed!
 669                 //tmprow->dump("tmprow 1: ");
 670                 tmprow->fill(fill(tmprow, workWidth()));
 671                 //tmprow->dump("tmprow 2: ");
 672                 setHeightOfRow(tmprow);
 673                 //tmprow->dump("tmprow 3: ");
 674                 height += rit->height();
 675
 676         } while (!done);
 677
 678         setHeightOfRow(rows().begin());
 679 }
 680
 681
 682 void LyXText::fullRebreak()
 683 {
 684         lyxerr << "fullRebreak" << endl;
 685         redoParagraphs(ownerParagraphs().begin(), ownerParagraphs().end());
 686         setCursorIntern(cursor.par(), cursor.pos());
 687         selection.cursor = cursor;
 688 }
 689
 690
 691 void LyXText::metrics(MetricsInfo & mi, Dimension & dim)
 692 {
 693         //lyxerr << "LyXText::metrics: width: " << mi.base.textwidth << endl;
 694         //Assert(mi.base.textwidth);
 695
 696         // rebuild row cache
 697         rowlist_.clear();
 698         width = height = 0;
 699
 700         anchor_row_ = rows().end();
 701         anchor_row_offset_ = 0;
 702
 703         ParagraphList::iterator pit = ownerParagraphs().begin();
 704         ParagraphList::iterator end = ownerParagraphs().end();
 705
 706         for (; pit != end; ++pit) {
 707                 InsetList::iterator ii = pit->insetlist.begin();
 708                 InsetList::iterator iend = pit->insetlist.end();
 709                 for (; ii != iend; ++ii) {
 710                         Dimension dim;
 711                         MetricsInfo m = mi;
 712 #warning FIXME: pos != 0
 713                         m.base.font = getFont(pit, 0);
 714                         ii->inset->metrics(m, dim);
 715                 }
 716
 717 #if 1
 718                 // insert a new row, starting at position 0
 719                 Row newrow(pit, 0);
 720                 RowList::iterator rit = rowlist_.insert(rowlist_.end(), newrow);
 721
 722                 // and now append the whole paragraph before the new row
 723                 appendParagraph(rit);
 724 #else
 725                 redoParagraph(pit);
 726 #endif
 727         }
 728
 729         // compute height
 730         //lyxerr << "height 0: " << height << endl;
 731         //for (RowList::iterator rit = rows().begin(); rit != rows().end(); ++rit) {
 732         //      height += rit->height();
 733         //}
 734         //lyxerr << "height 1: " << height << endl;
 735
 736         // final dimension
 737         dim.asc = rows().begin()->ascent_of_text();
 738         dim.des = height - dim.asc;
 739         dim.wid = std::max(mi.base.textwidth, int(width));
 740 }
 741
 742
 743 void LyXText::partialRebreak()
 744 {
 745         if (rows().empty()) {
 746                 init(bv());
 747                 return;
 748         }
 749         breakAgain(rows().begin());
 750 }
 751
 752
 753 // important for the screen
 754
 755
 756 // the cursor set functions have a special mechanism. When they
 757 // realize, that you left an empty paragraph, they will delete it.
 758 // They also delete the corresponding row
 759
 760 // need the selection cursor:
 761 void LyXText::setSelection()
 762 {
 763         bool const lsel = TextCursor::setSelection();
 764
 765         if (inset_owner && (selection.set() || lsel))
 766                 inset_owner->setUpdateStatus(InsetText::SELECTION);
 767 }
 768
 769
 770
 771 void LyXText::clearSelection()
 772 {
 773         TextCursor::clearSelection();
 774
 775         // reset this in the bv_owner!
 776         if (bv_owner && bv_owner->text)
 777                 bv_owner->text->xsel_cache.set(false);
 778 }
 779
 780
 781 void LyXText::cursorHome()
 782 {
 783         setCursor(cursor.par(), cursorRow()->pos());
 784 }
 785
 786
 787 void LyXText::cursorEnd()
 788 {
 789         if (cursor.par()->empty())
 790                 return;
 791
 792         RowList::iterator rit = cursorRow();
 793         RowList::iterator next_rit = boost::next(rit);
 794         ParagraphList::iterator pit = rit->par();
 795         pos_type last_pos = lastPos(*this, rit);
 796
 797         if (next_rit == rows().end() || next_rit->par() != pit) {
 798                 ++last_pos;
 799         } else {
 800                 if (pit->empty() ||
 801                     (pit->getChar(last_pos) != ' ' && !pit->isNewline(last_pos))) {
 802                         ++last_pos;
 803                 }
 804         }
 805
 806         setCursor(pit, last_pos);
 807 }
 808
 809
 810 void LyXText::cursorTop()
 811 {
 812         setCursor(ownerParagraphs().begin(), 0);
 813 }
 814
 815
 816 void LyXText::cursorBottom()
 817 {
 818         ParagraphList::iterator lastpit =
 819                 boost::prior(ownerParagraphs().end());
 820         setCursor(lastpit, lastpit->size());
 821 }
 822
 823
 824 void LyXText::toggleFree(LyXFont const & font, bool toggleall)
 825 {
 826         // If the mask is completely neutral, tell user
 827         if (font == LyXFont(LyXFont::ALL_IGNORE)) {
 828                 // Could only happen with user style
 829                 bv()->owner()->message(_("No font change defined. Use Character under the Layout menu to define font change."));
 830                 return;
 831         }
 832
 833         // Try implicit word selection
 834         // If there is a change in the language the implicit word selection
 835         // is disabled.
 836         LyXCursor resetCursor = cursor;
 837         bool implicitSelection = (font.language() == ignore_language
 838                                   && font.number() == LyXFont::IGNORE)
 839                 ? selectWordWhenUnderCursor(lyx::WHOLE_WORD_STRICT) : false;
 840
 841         // Set font
 842         setFont(font, toggleall);
 843
 844         // Implicit selections are cleared afterwards
 845         //and cursor is set to the original position.
 846         if (implicitSelection) {
 847                 clearSelection();
 848                 cursor = resetCursor;
 849                 setCursor(cursor.par(), cursor.pos());
 850                 selection.cursor = cursor;
 851         }
 852         if (inset_owner)
 853                 inset_owner->setUpdateStatus(InsetText::CURSOR_PAR);
 854 }
 855
 856
 857 string LyXText::getStringToIndex()
 858 {
 859         // Try implicit word selection
 860         // If there is a change in the language the implicit word selection
 861         // is disabled.
 862         LyXCursor const reset_cursor = cursor;
 863         bool const implicitSelection =
 864                 selectWordWhenUnderCursor(lyx::PREVIOUS_WORD);
 865
 866         string idxstring;
 867         if (!selection.set())
 868                 bv()->owner()->message(_("Nothing to index!"));
 869         else if (selection.start.par() != selection.end.par())
 870                 bv()->owner()->message(_("Cannot index more than one paragraph!"));
 871         else
 872                 idxstring = selectionAsString(bv()->buffer(), false);
 873
 874         // Reset cursors to their original position.
 875         cursor = reset_cursor;
 876         setCursor(cursor.par(), cursor.pos());
 877         selection.cursor = cursor;
 878
 879         // Clear the implicit selection.
 880         if (implicitSelection)
 881                 clearSelection();
 882
 883         return idxstring;
 884 }
 885
 886
 887 // the DTP switches for paragraphs. LyX will store them in the first
 888 // physicla paragraph. When a paragraph is broken, the top settings rest,
 889 // the bottom settings are given to the new one. So I can make shure,
 890 // they do not duplicate themself and you cannnot make dirty things with
 891 // them!
 892
 893 void LyXText::setParagraph(bool line_top, bool line_bottom,
 894                            bool pagebreak_top, bool pagebreak_bottom,
 895                            VSpace const & space_top,
 896                            VSpace const & space_bottom,
 897                            Spacing const & spacing,
 898                            LyXAlignment align,
 899                            string const & labelwidthstring,
 900                            bool noindent)
 901 {
 902         LyXCursor tmpcursor = cursor;
 903         if (!selection.set()) {
 904                 selection.start = cursor;
 905                 selection.end = cursor;
 906         }
 907
 908         // make sure that the depth behind the selection are restored, too
 909         ParagraphList::iterator endpit = boost::next(selection.end.par());
 910         ParagraphList::iterator undoendpit = endpit;
 911         ParagraphList::iterator pars_end = ownerParagraphs().end();
 912
 913         if (endpit != pars_end && endpit->getDepth()) {
 914                 while (endpit != pars_end && endpit->getDepth()) {
 915                         ++endpit;
 916                         undoendpit = endpit;
 917                 }
 918         } else if (endpit != pars_end) {
 919                 // because of parindents etc.
 920                 ++endpit;
 921         }
 922
 923         recordUndo(bv(), Undo::ATOMIC, selection.start.par(),
 924                 boost::prior(undoendpit));
 925
 926
 927         ParagraphList::iterator tmppit = selection.end.par();
 928
 929         while (tmppit != boost::prior(selection.start.par())) {
 930                 setCursor(tmppit, 0);
 931
 932                 ParagraphList::iterator pit = cursor.par();
 933                 ParagraphParameters & params = pit->params();
 934
 935                 params.lineTop(line_top);
 936                 params.lineBottom(line_bottom);
 937                 params.pagebreakTop(pagebreak_top);
 938                 params.pagebreakBottom(pagebreak_bottom);
 939                 params.spaceTop(space_top);
 940                 params.spaceBottom(space_bottom);
 941                 params.spacing(spacing);
 942                 // does the layout allow the new alignment?
 943                 LyXLayout_ptr const & layout = pit->layout();
 944
 945                 if (align == LYX_ALIGN_LAYOUT)
 946                         align = layout->align;
 947                 if (align & layout->alignpossible) {
 948                         if (align == layout->align)
 949                                 params.align(LYX_ALIGN_LAYOUT);
 950                         else
 951                                 params.align(align);
 952                 }
 953                 pit->setLabelWidthString(labelwidthstring);
 954                 params.noindent(noindent);
 955                 tmppit = boost::prior(pit);
 956         }
 957
 958         redoParagraphs(selection.start.par(), endpit);
 959
 960         clearSelection();
 961         setCursor(selection.start.par(), selection.start.pos());
 962         selection.cursor = cursor;
 963         setCursor(selection.end.par(), selection.end.pos());
 964         setSelection();
 965         setCursor(tmpcursor.par(), tmpcursor.pos());
 966         if (inset_owner)
 967                 bv()->updateInset(inset_owner);
 968 }
 969
 970
 971 // set the counter of a paragraph. This includes the labels
 972 void LyXText::setCounter(Buffer const * buf, ParagraphList::iterator pit)
 973 {
 974         LyXTextClass const & textclass = buf->params.getLyXTextClass();
 975         LyXLayout_ptr const & layout = pit->layout();
 976
 977         if (pit != ownerParagraphs().begin()) {
 978
 979                 pit->params().appendix(boost::prior(pit)->params().appendix());
 980                 if (!pit->params().appendix() &&
 981                     pit->params().startOfAppendix()) {
 982                         pit->params().appendix(true);
 983                         textclass.counters().reset();
 984                 }
 985                 pit->enumdepth = boost::prior(pit)->enumdepth;
 986                 pit->itemdepth = boost::prior(pit)->itemdepth;
 987         } else {
 988                 pit->params().appendix(pit->params().startOfAppendix());
 989                 pit->enumdepth = 0;
 990                 pit->itemdepth = 0;
 991         }
 992
 993         /* Maybe we have to increment the enumeration depth.
 994          * BUT, enumeration in a footnote is considered in isolation from its
 995          *      surrounding paragraph so don't increment if this is the
 996          *      first line of the footnote
 997          * AND, bibliographies can't have their depth changed ie. they
 998          *      are always of depth 0
 999          */
1000         if (pit != ownerParagraphs().begin()
1001             && boost::prior(pit)->getDepth() < pit->getDepth()
1002             && boost::prior(pit)->layout()->labeltype == LABEL_COUNTER_ENUMI
1003             && pit->enumdepth < 3
1004             && layout->labeltype != LABEL_BIBLIO) {
1005                 pit->enumdepth++;
1006         }
1007
1008         // Maybe we have to decrement the enumeration depth, see note above
1009         if (pit != ownerParagraphs().begin()
1010             && boost::prior(pit)->getDepth() > pit->getDepth()
1011             && layout->labeltype != LABEL_BIBLIO) {
1012                 pit->enumdepth = depthHook(pit, ownerParagraphs(),
1013                                            pit->getDepth())->enumdepth;
1014         }
1015
1016         if (!pit->params().labelString().empty()) {
1017                 pit->params().labelString(string());
1018         }
1019
1020         if (layout->margintype == MARGIN_MANUAL) {
1021                 if (pit->params().labelWidthString().empty()) {
1022                         pit->setLabelWidthString(layout->labelstring());
1023                 }
1024         } else {
1025                 pit->setLabelWidthString(string());
1026         }
1027
1028         // is it a layout that has an automatic label?
1029         if (layout->labeltype >= LABEL_COUNTER_CHAPTER) {
1030                 int const i = layout->labeltype - LABEL_COUNTER_CHAPTER;
1031
1032                 ostringstream s;
1033
1034                 if (i >= 0 && i <= buf->params.secnumdepth) {
1035                         string numbertype;
1036                         string langtype;
1037
1038                         textclass.counters().step(layout->latexname());
1039
1040                         // Is there a label? Useful for Chapter layout
1041                         if (!pit->params().appendix()) {
1042                                 s << buf->B_(layout->labelstring());
1043                         } else {
1044                                 s << buf->B_(layout->labelstring_appendix());
1045                         }
1046
1047                         // Use of an integer is here less than elegant. For now.
1048                         int head = textclass.maxcounter() - LABEL_COUNTER_CHAPTER;
1049                         if (!pit->params().appendix()) {
1050                                 numbertype = "sectioning";
1051                         } else {
1052                                 numbertype = "appendix";
1053                                 if (pit->isRightToLeftPar(buf->params))
1054                                         langtype = "hebrew";
1055                                 else
1056                                         langtype = "latin";
1057                         }
1058
1059                         s << " "
1060                           << textclass.counters()
1061                                 .numberLabel(layout->latexname(),
1062                                              numbertype, langtype, head);
1063
1064                         pit->params().labelString(STRCONV(s.str()));
1065
1066                         // reset enum counters
1067                         textclass.counters().reset("enum");
1068                 } else if (layout->labeltype < LABEL_COUNTER_ENUMI) {
1069                         textclass.counters().reset("enum");
1070                 } else if (layout->labeltype == LABEL_COUNTER_ENUMI) {
1071                         // FIXME
1072                         // Yes I know this is a really, really! bad solution
1073                         // (Lgb)
1074                         string enumcounter("enum");
1075
1076                         switch (pit->enumdepth) {
1077                         case 2:
1078                                 enumcounter += 'i';
1079                         case 1:
1080                                 enumcounter += 'i';
1081                         case 0:
1082                                 enumcounter += 'i';
1083                                 break;
1084                         case 3:
1085                                 enumcounter += "iv";
1086                                 break;
1087                         default:
1088                                 // not a valid enumdepth...
1089                                 break;
1090                         }
1091
1092                         textclass.counters().step(enumcounter);
1093
1094                         s << textclass.counters()
1095                                 .numberLabel(enumcounter, "enumeration");
1096                         pit->params().labelString(STRCONV(s.str()));
1097                 }
1098         } else if (layout->labeltype == LABEL_BIBLIO) {// ale970302
1099                 textclass.counters().step("bibitem");
1100                 int number = textclass.counters().value("bibitem");
1101                 if (pit->bibitem()) {
1102                         pit->bibitem()->setCounter(number);
1103                         pit->params().labelString(layout->labelstring());
1104                 }
1105                 // In biblio should't be following counters but...
1106         } else {
1107                 string s = buf->B_(layout->labelstring());
1108
1109                 // the caption hack:
1110                 if (layout->labeltype == LABEL_SENSITIVE) {
1111                         ParagraphList::iterator end = ownerParagraphs().end();
1112                         ParagraphList::iterator tmppit = pit;
1113                         InsetOld * in = 0;
1114                         bool isOK = false;
1115                         while (tmppit != end && tmppit->inInset()
1116                                // the single '=' is intended below
1117                                && (in = tmppit->inInset()->owner()))
1118                         {
1119                                 if (in->lyxCode() == InsetOld::FLOAT_CODE ||
1120                                     in->lyxCode() == InsetOld::WRAP_CODE) {
1121                                         isOK = true;
1122                                         break;
1123                                 } else {
1124                                         tmppit = ownerParagraphs().begin();
1125                                         for ( ; tmppit != end; ++tmppit)
1126                                                 if (&*tmppit == in->parOwner())
1127                                                         break;
1128                                 }
1129                         }
1130
1131                         if (isOK) {
1132                                 string type;
1133
1134                                 if (in->lyxCode() == InsetOld::FLOAT_CODE)
1135                                         type = static_cast<InsetFloat*>(in)->params().type;
1136                                 else if (in->lyxCode() == InsetOld::WRAP_CODE)
1137                                         type = static_cast<InsetWrap*>(in)->params().type;
1138                                 else
1139                                         Assert(0);
1140
1141                                 Floating const & fl = textclass.floats().getType(type);
1142
1143                                 textclass.counters().step(fl.type());
1144
1145                                 // Doesn't work... yet.
1146                                 s = bformat(_("%1$s #:"), buf->B_(fl.name()));
1147                         } else {
1148                                 // par->SetLayout(0);
1149                                 // s = layout->labelstring;
1150                                 s = _("Senseless: ");
1151                         }
1152                 }
1153                 pit->params().labelString(s);
1154
1155                 // reset the enumeration counter. They are always reset
1156                 // when there is any other layout between
1157                 // Just fall-through between the cases so that all
1158                 // enum counters deeper than enumdepth is also reset.
1159                 switch (pit->enumdepth) {
1160                 case 0:
1161                         textclass.counters().reset("enumi");
1162                 case 1:
1163                         textclass.counters().reset("enumii");
1164                 case 2:
1165                         textclass.counters().reset("enumiii");
1166                 case 3:
1167                         textclass.counters().reset("enumiv");
1168                 }
1169         }
1170 }
1171
1172
1173 // Updates all counters. Paragraphs with changed label string will be rebroken
1174 void LyXText::updateCounters()
1175 {
1176         RowList::iterator rowit = rows().begin();
1177         ParagraphList::iterator pit = rowit->par();
1178
1179         // CHECK if this is really needed. (Lgb)
1180         bv()->buffer()->params.getLyXTextClass().counters().reset();
1181
1182         ParagraphList::iterator beg = ownerParagraphs().begin();
1183         ParagraphList::iterator end = ownerParagraphs().end();
1184         for (; pit != end; ++pit) {
1185                 while (rowit->par() != pit)
1186                         ++rowit;
1187
1188                 string const oldLabel = pit->params().labelString();
1189
1190                 size_t maxdepth = 0;
1191                 if (pit != beg)
1192                         maxdepth = boost::prior(pit)->getMaxDepthAfter();
1193
1194                 if (pit->params().depth() > maxdepth)
1195                         pit->params().depth(maxdepth);
1196
1197                 // setCounter can potentially change the labelString.
1198                 setCounter(bv()->buffer(), pit);
1199
1200                 string const & newLabel = pit->params().labelString();
1201
1202                 if (oldLabel != newLabel)
1203                         redoParagraph(pit);
1204         }
1205 }
1206
1207
1208 void LyXText::insertInset(InsetOld * inset)
1209 {
1210         if (!cursor.par()->insetAllowed(inset->lyxCode()))
1211                 return;
1212         recordUndo(bv(), Undo::ATOMIC, cursor.par());
1213         freezeUndo();
1214         cursor.par()->insertInset(cursor.pos(), inset);
1215         // Just to rebreak and refresh correctly.
1216         // The character will not be inserted a second time
1217         insertChar(Paragraph::META_INSET);
1218         // If we enter a highly editable inset the cursor should be to before
1219         // the inset. This couldn't happen before as Undo was not handled inside
1220         // inset now after the Undo LyX tries to call inset->Edit(...) again
1221         // and cannot do this as the cursor is behind the inset and GetInset
1222         // does not return the inset!
1223         if (isHighlyEditableInset(inset)) {
1224                 cursorLeft(true);
1225         }
1226         unFreezeUndo();
1227 }
1228
1229
1230 void LyXText::cutSelection(bool doclear, bool realcut)
1231 {
1232         // Stuff what we got on the clipboard. Even if there is no selection.
1233
1234         // There is a problem with having the stuffing here in that the
1235         // larger the selection the slower LyX will get. This can be
1236         // solved by running the line below only when the selection has
1237         // finished. The solution used currently just works, to make it
1238         // faster we need to be more clever and probably also have more
1239         // calls to stuffClipboard. (Lgb)
1240         bv()->stuffClipboard(selectionAsString(bv()->buffer(), true));
1241
1242         // This doesn't make sense, if there is no selection
1243         if (!selection.set())
1244                 return;
1245
1246         // OK, we have a selection. This is always between selection.start
1247         // and selection.end
1248
1249         // make sure that the depth behind the selection are restored, too
1250         ParagraphList::iterator endpit = boost::next(selection.end.par());
1251         ParagraphList::iterator undoendpit = endpit;
1252         ParagraphList::iterator pars_end = ownerParagraphs().end();
1253
1254         if (endpit != pars_end && endpit->getDepth()) {
1255                 while (endpit != pars_end && endpit->getDepth()) {
1256                         ++endpit;
1257                         undoendpit = endpit;
1258                 }
1259         } else if (endpit != pars_end) {
1260                 // because of parindents etc.
1261                 ++endpit;
1262         }
1263
1264         recordUndo(bv(), Undo::DELETE, selection.start.par(),
1265                 boost::prior(undoendpit));
1266
1267
1268         endpit = selection.end.par();
1269         int endpos = selection.end.pos();
1270
1271         boost::tie(endpit, endpos) = realcut ?
1272                 CutAndPaste::cutSelection(bv()->buffer()->params,
1273                                           ownerParagraphs(),
1274                                           selection.start.par(), endpit,
1275                                           selection.start.pos(), endpos,
1276                                           bv()->buffer()->params.textclass,
1277                                           doclear)
1278                 : CutAndPaste::eraseSelection(bv()->buffer()->params,
1279                                               ownerParagraphs(),
1280                                               selection.start.par(), endpit,
1281                                               selection.start.pos(), endpos,
1282                                               doclear);
1283         // sometimes necessary
1284         if (doclear)
1285                 selection.start.par()->stripLeadingSpaces();
1286
1287         redoParagraphs(selection.start.par(), boost::next(endpit));
1288 #warning FIXME latent bug
1289         // endpit will be invalidated on redoParagraphs once ParagraphList
1290         // becomes a std::list? There are maybe other places on which this
1291         // can happend? (Ab)
1292         // cutSelection can invalidate the cursor so we need to set
1293         // it anew. (Lgb)
1294         // we prefer the end for when tracking changes
1295         cursor.pos(endpos);
1296         cursor.par(endpit);
1297
1298         // need a valid cursor. (Lgb)
1299         clearSelection();
1300
1301         setCursor(cursor.par(), cursor.pos());
1302         selection.cursor = cursor;
1303         updateCounters();
1304 }
1305
1306
1307 void LyXText::copySelection()
1308 {
1309         // stuff the selection onto the X clipboard, from an explicit copy request
1310         bv()->stuffClipboard(selectionAsString(bv()->buffer(), true));
1311
1312         // this doesnt make sense, if there is no selection
1313         if (!selection.set())
1314                 return;
1315
1316         // ok we have a selection. This is always between selection.start
1317         // and sel_end cursor
1318
1319         // copy behind a space if there is one
1320         while (selection.start.par()->size() > selection.start.pos()
1321                && selection.start.par()->isLineSeparator(selection.start.pos())
1322                && (selection.start.par() != selection.end.par()
1323                    || selection.start.pos() < selection.end.pos()))
1324                 selection.start.pos(selection.start.pos() + 1);
1325
1326         CutAndPaste::copySelection(selection.start.par(),
1327                                    selection.end.par(),
1328                                    selection.start.pos(), selection.end.pos(),
1329                                    bv()->buffer()->params.textclass);
1330 }
1331
1332
1333 void LyXText::pasteSelection(size_t sel_index)
1334 {
1335         // this does not make sense, if there is nothing to paste
1336         if (!CutAndPaste::checkPastePossible())
1337                 return;
1338
1339         recordUndo(bv(), Undo::INSERT, cursor.par());
1340
1341         ParagraphList::iterator endpit;
1342         PitPosPair ppp;
1343
1344         ErrorList el;
1345
1346         boost::tie(ppp, endpit) =
1347                 CutAndPaste::pasteSelection(*bv()->buffer(),
1348                                             ownerParagraphs(),
1349                                             cursor.par(), cursor.pos(),
1350                                             bv()->buffer()->params.textclass,
1351                                             sel_index, el);
1352         bufferErrors(*bv()->buffer(), el);
1353         bv()->showErrorList(_("Paste"));
1354
1355         redoParagraphs(cursor.par(), endpit);
1356
1357         setCursor(cursor.par(), cursor.pos());
1358         clearSelection();
1359
1360         selection.cursor = cursor;
1361         setCursor(ppp.first, ppp.second);
1362         setSelection();
1363         updateCounters();
1364 }
1365
1366
1367 void LyXText::setSelectionRange(lyx::pos_type length)
1368 {
1369         if (!length)
1370                 return;
1371
1372         selection.cursor = cursor;
1373         while (length--)
1374                 cursorRight(bv());
1375         setSelection();
1376 }
1377
1378
1379 // simple replacing. The font of the first selected character is used
1380 void LyXText::replaceSelectionWithString(string const & str)
1381 {
1382         recordUndo(bv(), Undo::ATOMIC);
1383         freezeUndo();
1384
1385         if (!selection.set()) { // create a dummy selection
1386                 selection.end = cursor;
1387                 selection.start = cursor;
1388         }
1389
1390         // Get font setting before we cut
1391         pos_type pos = selection.end.pos();
1392         LyXFont const font = selection.start.par()
1393                 ->getFontSettings(bv()->buffer()->params,
1394                                   selection.start.pos());
1395
1396         // Insert the new string
1397         string::const_iterator cit = str.begin();
1398         string::const_iterator end = str.end();
1399         for (; cit != end; ++cit) {
1400                 selection.end.par()->insertChar(pos, (*cit), font);
1401                 ++pos;
1402         }
1403
1404         // Cut the selection
1405         cutSelection(true, false);
1406
1407         unFreezeUndo();
1408 }
1409
1410
1411 // needed to insert the selection
1412 void LyXText::insertStringAsLines(string const & str)
1413 {
1414         ParagraphList::iterator pit = cursor.par();
1415         pos_type pos = cursor.pos();
1416         ParagraphList::iterator endpit = boost::next(cursor.par());
1417
1418         recordUndo(bv(), Undo::ATOMIC);
1419
1420         // only to be sure, should not be neccessary
1421         clearSelection();
1422
1423         bv()->buffer()->insertStringAsLines(pit, pos, current_font, str);
1424
1425         redoParagraphs(cursor.par(), endpit);
1426         setCursor(cursor.par(), cursor.pos());
1427         selection.cursor = cursor;
1428         setCursor(pit, pos);
1429         setSelection();
1430 }
1431
1432
1433 // turns double-CR to single CR, others where converted into one
1434 // blank. Then InsertStringAsLines is called
1435 void LyXText::insertStringAsParagraphs(string const & str)
1436 {
1437         string linestr(str);
1438         bool newline_inserted = false;
1439         string::size_type const siz = linestr.length();
1440
1441         for (string::size_type i = 0; i < siz; ++i) {
1442                 if (linestr[i] == '\n') {
1443                         if (newline_inserted) {
1444                                 // we know that \r will be ignored by
1445                                 // InsertStringA. Of course, it is a dirty
1446                                 // trick, but it works...
1447                                 linestr[i - 1] = '\r';
1448                                 linestr[i] = '\n';
1449                         } else {
1450                                 linestr[i] = ' ';
1451                                 newline_inserted = true;
1452                         }
1453                 } else if (IsPrintable(linestr[i])) {
1454                         newline_inserted = false;
1455                 }
1456         }
1457         insertStringAsLines(linestr);
1458 }
1459
1460
1461 void LyXText::checkParagraph(ParagraphList::iterator pit, pos_type pos)
1462 {
1463         breakAgain(getRow(pit, pos));
1464         setCursorIntern(cursor.par(), cursor.pos(), false, cursor.boundary());
1465 }
1466
1467
1468 // returns false if inset wasn't found
1469 bool LyXText::updateInset(InsetOld * inset)
1470 {
1471         // first check the current paragraph
1472         int pos = cursor.par()->getPositionOfInset(inset);
1473         if (pos != -1) {
1474                 checkParagraph(cursor.par(), pos);
1475                 return true;
1476         }
1477
1478         // check every paragraph
1479         ParagraphList::iterator par = ownerParagraphs().begin();
1480         ParagraphList::iterator end = ownerParagraphs().end();
1481         for (; par != end; ++par) {
1482                 pos = par->getPositionOfInset(inset);
1483                 if (pos != -1) {
1484                         checkParagraph(par, pos);
1485                         return true;
1486                 }
1487         }
1488
1489         return false;
1490 }
1491
1492
1493 bool LyXText::setCursor(ParagraphList::iterator pit,
1494                         pos_type pos,
1495                         bool setfont, bool boundary)
1496 {
1497         LyXCursor old_cursor = cursor;
1498         setCursorIntern(pit, pos, setfont, boundary);
1499         return deleteEmptyParagraphMechanism(old_cursor);
1500 }
1501
1502
1503 void LyXText::setCursor(LyXCursor & cur, ParagraphList::iterator pit,
1504                         pos_type pos, bool boundary)
1505 {
1506         Assert(pit != ownerParagraphs().end());
1507
1508         cur.par(pit);
1509         cur.pos(pos);
1510         cur.boundary(boundary);
1511         if (rows().empty())
1512                 return;
1513
1514         // get the cursor y position in text
1515         int y = 0;
1516         RowList::iterator row = getRow(pit, pos, y);
1517         RowList::iterator beg = rows().begin();
1518
1519         RowList::iterator old_row = row;
1520         // if we are before the first char of this row and are still in the
1521         // same paragraph and there is a previous row then put the cursor on
1522         // the end of the previous row
1523         cur.iy(y + row->baseline());
1524         if (row != beg &&
1525             pos &&
1526             boost::prior(row)->par() == row->par() &&
1527             pos < pit->size() &&
1528             pit->getChar(pos) == Paragraph::META_INSET) {
1529                 InsetOld * ins = pit->getInset(pos);
1530                 if (ins && (ins->needFullRow() || ins->display())) {
1531                         --row;
1532                         y -= row->height();
1533                 }
1534         }
1535
1536         // y is now the beginning of the cursor row
1537         y += row->baseline();
1538         // y is now the cursor baseline
1539         cur.y(y);
1540
1541         pos_type last = lastPrintablePos(*this, old_row);
1542
1543         // None of these should happen, but we're scaredy-cats
1544         if (pos > pit->size()) {
1545                 lyxerr << "dont like 1 please report" << endl;
1546                 pos = 0;
1547                 cur.pos(0);
1548         } else if (pos > last + 1) {
1549                 lyxerr << "dont like 2 please report" << endl;
1550                 // This shouldn't happen.
1551                 pos = last + 1;
1552                 cur.pos(pos);
1553         } else if (pos < row->pos()) {
1554                 lyxerr << "dont like 3 please report" << endl;
1555                 pos = row->pos();
1556                 cur.pos(pos);
1557         }
1558
1559         // now get the cursors x position
1560         float x = getCursorX(row, pos, last, boundary);
1561         cur.x(int(x));
1562         cur.x_fix(cur.x());
1563         if (old_row != row) {
1564                 x = getCursorX(old_row, pos, last, boundary);
1565                 cur.ix(int(x));
1566         } else
1567                 cur.ix(cur.x());
1568 /* We take out this for the time being because 1) the redraw code is not
1569    prepared to this yet and 2) because some good policy has yet to be decided
1570    while editting: for instance how to act on rows being created/deleted
1571    because of DEPM.
1572 */
1573 #if 0
1574         //if the cursor is in a visible row, anchor to it
1575         int topy = top_y();
1576         if (topy < y && y < topy + bv()->workHeight())
1577                 anchor_row(row);
1578 #endif
1579 }
1580
1581
1582 float LyXText::getCursorX(RowList::iterator rit,
1583                           pos_type pos, pos_type last, bool boundary) const
1584 {
1585         pos_type cursor_vpos = 0;
1586         double x;
1587         double fill_separator;
1588         double fill_hfill;
1589         double fill_label_hfill;
1590         // This call HAS to be here because of the BidiTables!!!
1591         prepareToPrint(rit, x, fill_separator, fill_hfill,
1592                        fill_label_hfill);
1593
1594         ParagraphList::iterator rit_par = rit->par();
1595         pos_type const rit_pos = rit->pos();
1596
1597         if (last < rit_pos)
1598                 cursor_vpos = rit_pos;
1599         else if (pos > last && !boundary)
1600                 cursor_vpos = (rit_par->isRightToLeftPar(bv()->buffer()->params))
1601                         ? rit_pos : last + 1;
1602         else if (pos > rit_pos && (pos > last || boundary))
1603                 /// Place cursor after char at (logical) position pos - 1
1604                 cursor_vpos = (bidi_level(pos - 1) % 2 == 0)
1605                         ? log2vis(pos - 1) + 1 : log2vis(pos - 1);
1606         else
1607                 /// Place cursor before char at (logical) position pos
1608                 cursor_vpos = (bidi_level(pos) % 2 == 0)
1609                         ? log2vis(pos) : log2vis(pos) + 1;
1610
1611         pos_type body_pos = rit_par->beginningOfBody();
1612         if (body_pos > 0 &&
1613             (body_pos - 1 > last || !rit_par->isLineSeparator(body_pos - 1)))
1614                 body_pos = 0;
1615
1616         for (pos_type vpos = rit_pos; vpos < cursor_vpos; ++vpos) {
1617                 pos_type pos = vis2log(vpos);
1618                 if (body_pos > 0 && pos == body_pos - 1) {
1619                         x += fill_label_hfill +
1620                                 font_metrics::width(
1621                                         rit_par->layout()->labelsep, getLabelFont(rit_par));
1622                         if (rit_par->isLineSeparator(body_pos - 1))
1623                                 x -= singleWidth(rit_par, body_pos - 1);
1624                 }
1625
1626                 if (hfillExpansion(*this, rit, pos)) {
1627                         x += singleWidth(rit_par, pos);
1628                         if (pos >= body_pos)
1629                                 x += fill_hfill;
1630                         else
1631                                 x += fill_label_hfill;
1632                 } else if (rit_par->isSeparator(pos)) {
1633                         x += singleWidth(rit_par, pos);
1634                         if (pos >= body_pos)
1635                                 x += fill_separator;
1636                 } else
1637                         x += singleWidth(rit_par, pos);
1638         }
1639         return x;
1640 }
1641
1642
1643 void LyXText::setCursorIntern(ParagraphList::iterator pit,
1644                               pos_type pos, bool setfont, bool boundary)
1645 {
1646         UpdatableInset * it = pit->inInset();
1647         if (it) {
1648                 if (it != inset_owner) {
1649                         lyxerr[Debug::INSETS] << "InsetText   is " << it
1650                                               << endl
1651                                               << "inset_owner is "
1652                                               << inset_owner << endl;
1653 #ifdef WITH_WARNINGS
1654 #warning I believe this code is wrong. (Lgb)
1655 #warning Jürgen, have a look at this. (Lgb)
1656 #warning Hmmm, I guess you are right but we
1657 #warning should verify when this is needed
1658 #endif
1659                         // Jürgen, would you like to have a look?
1660                         // I guess we need to move the outer cursor
1661                         // and open and lock the inset (bla bla bla)
1662                         // stuff I don't know... so can you have a look?
1663                         // (Lgb)
1664                         // I moved the lyxerr stuff in here so we can see if
1665                         // this is actually really needed and where!
1666                         // (Jug)
1667                         // it->getLyXText(bv())->setCursorIntern(bv(), par, pos, setfont, boundary);
1668                         return;
1669                 }
1670         }
1671
1672         setCursor(cursor, pit, pos, boundary);
1673         if (setfont)
1674                 setCurrentFont();
1675 }
1676
1677
1678 void LyXText::setCurrentFont()
1679 {
1680         pos_type pos = cursor.pos();
1681         ParagraphList::iterator pit = cursor.par();
1682
1683         if (cursor.boundary() && pos > 0)
1684                 --pos;
1685
1686         if (pos > 0) {
1687                 if (pos == pit->size())
1688                         --pos;
1689                 else // potentional bug... BUG (Lgb)
1690                         if (pit->isSeparator(pos)) {
1691                                 if (pos > cursorRow()->pos() &&
1692                                     bidi_level(pos) % 2 ==
1693                                     bidi_level(pos - 1) % 2)
1694                                         --pos;
1695                                 else if (pos + 1 < pit->size())
1696                                         ++pos;
1697                         }
1698         }
1699
1700         current_font = pit->getFontSettings(bv()->buffer()->params, pos);
1701         real_current_font = getFont(pit, pos);
1702
1703         if (cursor.pos() == pit->size() &&
1704             isBoundary(bv()->buffer(), *pit, cursor.pos()) &&
1705             !cursor.boundary()) {
1706                 Language const * lang =
1707                         pit->getParLanguage(bv()->buffer()->params);
1708                 current_font.setLanguage(lang);
1709                 current_font.setNumber(LyXFont::OFF);
1710                 real_current_font.setLanguage(lang);
1711                 real_current_font.setNumber(LyXFont::OFF);
1712         }
1713 }
1714
1715
1716 // returns the column near the specified x-coordinate of the row
1717 // x is set to the real beginning of this column
1718 pos_type
1719 LyXText::getColumnNearX(RowList::iterator rit, int & x, bool & boundary) const
1720 {
1721         double tmpx = 0;
1722         double fill_separator;
1723         double fill_hfill;
1724         double fill_label_hfill;
1725
1726         prepareToPrint(rit, tmpx, fill_separator, fill_hfill, fill_label_hfill);
1727
1728         pos_type vc = rit->pos();
1729         pos_type last = lastPrintablePos(*this, rit);
1730         pos_type c = 0;
1731
1732         ParagraphList::iterator rit_par = rit->par();
1733         LyXLayout_ptr const & layout = rit->par()->layout();
1734
1735         bool left_side = false;
1736
1737         pos_type body_pos = rit_par->beginningOfBody();
1738         double last_tmpx = tmpx;
1739
1740         if (body_pos > 0 &&
1741             (body_pos - 1 > last ||
1742              !rit_par->isLineSeparator(body_pos - 1)))
1743                 body_pos = 0;
1744
1745         // check for empty row
1746         if (!rit_par->size()) {
1747                 x = int(tmpx);
1748                 return 0;
1749         }
1750
1751         while (vc <= last && tmpx <= x) {
1752                 c = vis2log(vc);
1753                 last_tmpx = tmpx;
1754                 if (body_pos > 0 && c == body_pos - 1) {
1755                         tmpx += fill_label_hfill +
1756                                 font_metrics::width(layout->labelsep, getLabelFont(rit_par));
1757                         if (rit_par->isLineSeparator(body_pos - 1))
1758                                 tmpx -= singleWidth(rit_par, body_pos - 1);
1759                 }
1760
1761                 if (hfillExpansion(*this, rit, c)) {
1762                         tmpx += singleWidth(rit_par, c);
1763                         if (c >= body_pos)
1764                                 tmpx += fill_hfill;
1765                         else
1766                                 tmpx += fill_label_hfill;
1767                 } else if (rit_par->isSeparator(c)) {
1768                         tmpx += singleWidth(rit_par, c);
1769                         if (c >= body_pos)
1770                                 tmpx += fill_separator;
1771                 } else {
1772                         tmpx += singleWidth(rit_par, c);
1773                 }
1774                 ++vc;
1775         }
1776
1777         if ((tmpx + last_tmpx) / 2 > x) {
1778                 tmpx = last_tmpx;
1779                 left_side = true;
1780         }
1781
1782         if (vc > last + 1)  // This shouldn't happen.
1783                 vc = last + 1;
1784
1785         boundary = false;
1786         // This (rtl_support test) is not needed, but gives
1787         // some speedup if rtl_support=false
1788         RowList::iterator next_rit = boost::next(rit);
1789
1790         bool const lastrow = lyxrc.rtl_support &&
1791                 (next_rit == rowlist_.end() ||
1792                  next_rit->par() != rit_par);
1793
1794         // If lastrow is false, we don't need to compute
1795         // the value of rtl.
1796         bool const rtl = (lastrow)
1797                 ? rit_par->isRightToLeftPar(bv()->buffer()->params)
1798                 : false;
1799         if (lastrow &&
1800                  ((rtl &&  left_side && vc == rit->pos() && x < tmpx - 5) ||
1801                    (!rtl && !left_side && vc == last + 1   && x > tmpx + 5)))
1802                 c = last + 1;
1803         else if (vc == rit->pos()) {
1804                 c = vis2log(vc);
1805                 if (bidi_level(c) % 2 == 1)
1806                         ++c;
1807         } else {
1808                 c = vis2log(vc - 1);
1809                 bool const rtl = (bidi_level(c) % 2 == 1);
1810                 if (left_side == rtl) {
1811                         ++c;
1812                         boundary = isBoundary(bv()->buffer(), *rit_par, c);
1813                 }
1814         }
1815
1816         if (rit->pos() <= last && c > last
1817             && rit_par->isNewline(last)) {
1818                 if (bidi_level(last) % 2 == 0)
1819                         tmpx -= singleWidth(rit_par, last);
1820                 else
1821                         tmpx += singleWidth(rit_par, last);
1822                 c = last;
1823         }
1824
1825         c -= rit->pos();
1826         x = int(tmpx);
1827         return c;
1828 }
1829
1830
1831 void LyXText::setCursorFromCoordinates(int x, int y)
1832 {
1833         //LyXCursor old_cursor = cursor;
1834         setCursorFromCoordinates(cursor, x, y);
1835         setCurrentFont();
1836 #warning DEPM disabled, otherwise crash when entering new table
1837         //deleteEmptyParagraphMechanism(old_cursor);
1838 }
1839
1840
1841 namespace {
1842
1843         /**
1844          * return true if the cursor given is at the end of a row,
1845          * and the next row is filled by an inset that spans an entire
1846          * row.
1847          */
1848         bool beforeFullRowInset(LyXText & lt, LyXCursor const & cur)
1849         {
1850                 RowList::iterator row = lt.getRow(cur);
1851                 if (boost::next(row) == lt.rows().end())
1852                         return false;
1853
1854                 Row const & next = *boost::next(row);
1855
1856                 if (next.pos() != cur.pos() || next.par() != cur.par())
1857                         return false;
1858
1859                 if (cur.pos() == cur.par()->size()
1860                     || !cur.par()->isInset(cur.pos()))
1861                         return false;
1862
1863                 InsetOld const * inset = cur.par()->getInset(cur.pos());
1864                 if (inset->needFullRow() || inset->display())
1865                         return true;
1866
1867                 return false;
1868         }
1869 }
1870
1871
1872 void LyXText::setCursorFromCoordinates(LyXCursor & cur, int x, int y)
1873 {
1874         // Get the row first.
1875
1876         RowList::iterator row = getRowNearY(y);
1877         bool bound = false;
1878         pos_type const column = getColumnNearX(row, x, bound);
1879         cur.par(row->par());
1880         cur.pos(row->pos() + column);
1881         cur.x(x);
1882         cur.y(y + row->baseline());
1883
1884         if (beforeFullRowInset(*this, cur)) {
1885                 pos_type const last = lastPrintablePos(*this, row);
1886                 RowList::iterator next_row = boost::next(row);
1887
1888                 float x = getCursorX(next_row, cur.pos(), last, bound);
1889                 cur.ix(int(x));
1890                 cur.iy(y + row->height() + next_row->baseline());
1891         } else {
1892                 cur.iy(cur.y());
1893                 cur.ix(cur.x());
1894         }
1895         cur.boundary(bound);
1896 }
1897
1898
1899 void LyXText::cursorLeft(bool internal)
1900 {
1901         if (cursor.pos() > 0) {
1902                 bool boundary = cursor.boundary();
1903                 setCursor(cursor.par(), cursor.pos() - 1, true, false);
1904                 if (!internal && !boundary &&
1905                     isBoundary(bv()->buffer(), *cursor.par(), cursor.pos() + 1))
1906                         setCursor(cursor.par(), cursor.pos() + 1, true, true);
1907         } else if (cursor.par() != ownerParagraphs().begin()) {
1908                 // steps into the paragraph above
1909                 ParagraphList::iterator pit = boost::prior(cursor.par());
1910                 setCursor(pit, pit->size());
1911         }
1912 }
1913
1914
1915 void LyXText::cursorRight(bool internal)
1916 {
1917         bool const at_end = (cursor.pos() == cursor.par()->size());
1918         bool const at_newline = !at_end &&
1919                 cursor.par()->isNewline(cursor.pos());
1920
1921         if (!internal && cursor.boundary() && !at_newline)
1922                 setCursor(cursor.par(), cursor.pos(), true, false);
1923         else if (!at_end) {
1924                 setCursor(cursor.par(), cursor.pos() + 1, true, false);
1925                 if (!internal &&
1926                     isBoundary(bv()->buffer(), *cursor.par(), cursor.pos()))
1927                         setCursor(cursor.par(), cursor.pos(), true, true);
1928         } else if (boost::next(cursor.par()) != ownerParagraphs().end())
1929                 setCursor(boost::next(cursor.par()), 0);
1930 }
1931
1932
1933 void LyXText::cursorUp(bool selecting)
1934 {
1935 #if 1
1936         int x = cursor.x_fix();
1937         int y = cursor.y() - cursorRow()->baseline() - 1;
1938         setCursorFromCoordinates(x, y);
1939         if (!selecting) {
1940                 int topy = top_y();
1941                 int y1 = cursor.iy() - topy;
1942                 int y2 = y1;
1943                 y -= topy;
1944                 InsetOld * inset_hit = checkInsetHit(x, y1);
1945                 if (inset_hit && isHighlyEditableInset(inset_hit)) {
1946                         inset_hit->localDispatch(
1947                                 FuncRequest(bv(), LFUN_INSET_EDIT, x, y - (y2 - y1), mouse_button::none));
1948                 }
1949         }
1950 #else
1951         setCursorFromCoordinates(bv(), cursor.x_fix(),
1952                                  cursor.y() - cursorRow()->baseline() - 1);
1953 #endif
1954 }
1955
1956
1957 void LyXText::cursorDown(bool selecting)
1958 {
1959 #if 1
1960         int x = cursor.x_fix();
1961         int y = cursor.y() - cursorRow()->baseline() + cursorRow()->height() + 1;
1962         setCursorFromCoordinates(x, y);
1963         if (!selecting && cursorRow() == cursorIRow()) {
1964                 int topy = top_y();
1965                 int y1 = cursor.iy() - topy;
1966                 int y2 = y1;
1967                 y -= topy;
1968                 InsetOld * inset_hit = checkInsetHit(x, y1);
1969                 if (inset_hit && isHighlyEditableInset(inset_hit)) {
1970                         FuncRequest cmd(bv(), LFUN_INSET_EDIT, x, y - (y2 - y1), mouse_button::none);
1971                         inset_hit->localDispatch(cmd);
1972                 }
1973         }
1974 #else
1975         setCursorFromCoordinates(bv(), cursor.x_fix(),
1976                                  cursor.y() - cursorRow()->baseline()
1977                                  + cursorRow()->height() + 1);
1978 #endif
1979 }
1980
1981
1982 void LyXText::cursorUpParagraph()
1983 {
1984         if (cursor.pos() > 0)
1985                 setCursor(cursor.par(), 0);
1986         else if (cursor.par() != ownerParagraphs().begin())
1987                 setCursor(boost::prior(cursor.par()), 0);
1988 }
1989
1990
1991 void LyXText::cursorDownParagraph()
1992 {
1993         ParagraphList::iterator par = cursor.par();
1994         ParagraphList::iterator next_par = boost::next(par);
1995
1996         if (next_par != ownerParagraphs().end())
1997                 setCursor(next_par, 0);
1998         else
1999                 setCursor(par, par->size());
2000 }
2001
2002
2003 // fix the cursor `cur' after a characters has been deleted at `where'
2004 // position. Called by deleteEmptyParagraphMechanism
2005 void LyXText::fixCursorAfterDelete(LyXCursor & cur,
2006                                    LyXCursor const & where)
2007 {
2008         // if cursor is not in the paragraph where the delete occured,
2009         // do nothing
2010         if (cur.par() != where.par())
2011                 return;
2012
2013         // if cursor position is after the place where the delete occured,
2014         // update it
2015         if (cur.pos() > where.pos())
2016                 cur.pos(cur.pos()-1);
2017
2018         // check also if we don't want to set the cursor on a spot behind the
2019         // pagragraph because we erased the last character.
2020         if (cur.pos() > cur.par()->size())
2021                 cur.pos(cur.par()->size());
2022
2023         // recompute row et al. for this cursor
2024         setCursor(cur, cur.par(), cur.pos(), cur.boundary());
2025 }
2026
2027
2028 bool LyXText::deleteEmptyParagraphMechanism(LyXCursor const & old_cursor)
2029 {
2030         // Would be wrong to delete anything if we have a selection.
2031         if (selection.set())
2032                 return false;
2033
2034         // We allow all kinds of "mumbo-jumbo" when freespacing.
2035         if (old_cursor.par()->layout()->free_spacing
2036             || old_cursor.par()->isFreeSpacing()) {
2037                 return false;
2038         }
2039
2040         /* Ok I'll put some comments here about what is missing.
2041            I have fixed BackSpace (and thus Delete) to not delete
2042            double-spaces automagically. I have also changed Cut,
2043            Copy and Paste to hopefully do some sensible things.
2044            There are still some small problems that can lead to
2045            double spaces stored in the document file or space at
2046            the beginning of paragraphs. This happens if you have
2047            the cursor betwenn to spaces and then save. Or if you
2048            cut and paste and the selection have a space at the
2049            beginning and then save right after the paste. I am
2050            sure none of these are very hard to fix, but I will
2051            put out 1.1.4pre2 with FIX_DOUBLE_SPACE defined so
2052            that I can get some feedback. (Lgb)
2053         */
2054
2055         // If old_cursor.pos() == 0 and old_cursor.pos()(1) == LineSeparator
2056         // delete the LineSeparator.
2057         // MISSING
2058
2059         // If old_cursor.pos() == 1 and old_cursor.pos()(0) == LineSeparator
2060         // delete the LineSeparator.
2061         // MISSING
2062
2063         // If the pos around the old_cursor were spaces, delete one of them.
2064         if (old_cursor.par() != cursor.par()
2065             || old_cursor.pos() != cursor.pos()) {
2066                 // Only if the cursor has really moved
2067
2068                 if (old_cursor.pos() > 0
2069                     && old_cursor.pos() < old_cursor.par()->size()
2070                     && old_cursor.par()->isLineSeparator(old_cursor.pos())
2071                     && old_cursor.par()->isLineSeparator(old_cursor.pos() - 1)) {
2072                         old_cursor.par()->erase(old_cursor.pos() - 1);
2073                         redoParagraph(old_cursor.par());
2074
2075 #ifdef WITH_WARNINGS
2076 #warning This will not work anymore when we have multiple views of the same buffer
2077 // In this case, we will have to correct also the cursors held by
2078 // other bufferviews. It will probably be easier to do that in a more
2079 // automated way in LyXCursor code. (JMarc 26/09/2001)
2080 #endif
2081                         // correct all cursors held by the LyXText
2082                         fixCursorAfterDelete(cursor, old_cursor);
2083                         fixCursorAfterDelete(selection.cursor, old_cursor);
2084                         fixCursorAfterDelete(selection.start, old_cursor);
2085                         fixCursorAfterDelete(selection.end, old_cursor);
2086                         fixCursorAfterDelete(last_sel_cursor, old_cursor);
2087                         return false;
2088                 }
2089         }
2090
2091         // don't delete anything if this is the ONLY paragraph!
2092         if (ownerParagraphs().size() == 1)
2093                 return false;
2094
2095         // Do not delete empty paragraphs with keepempty set.
2096         if (old_cursor.par()->allowEmpty())
2097                 return false;
2098
2099         // only do our magic if we changed paragraph
2100         if (old_cursor.par() == cursor.par())
2101                 return false;
2102
2103         // record if we have deleted a paragraph
2104         // we can't possibly have deleted a paragraph before this point
2105         bool deleted = false;
2106
2107         if (old_cursor.par()->empty() ||
2108             (old_cursor.par()->size() == 1 &&
2109              old_cursor.par()->isLineSeparator(0))) {
2110                 // ok, we will delete anything
2111                 LyXCursor tmpcursor;
2112
2113                 deleted = true;
2114
2115                 bool selection_position_was_oldcursor_position = (
2116                         selection.cursor.par()  == old_cursor.par()
2117                         && selection.cursor.pos() == old_cursor.pos());
2118
2119                 if (getRow(old_cursor) != rows().begin()) {
2120                         RowList::iterator prevrow = boost::prior(getRow(old_cursor));
2121                         tmpcursor = cursor;
2122                         cursor = old_cursor; // that undo can restore the right cursor position
2123                         #warning FIXME. --end() iterator is usable here
2124                         ParagraphList::iterator endpit = boost::next(old_cursor.par());
2125                         while (endpit != ownerParagraphs().end() &&
2126                                endpit->getDepth()) {
2127                                 ++endpit;
2128                         }
2129
2130                         recordUndo(bv(), Undo::DELETE, old_cursor.par(),
2131                                 boost::prior(endpit));
2132                         cursor = tmpcursor;
2133
2134                         // delete old row
2135                         removeRow(getRow(old_cursor));
2136                         // delete old par
2137                         ownerParagraphs().erase(old_cursor.par());
2138
2139                         /* Breakagain the next par. Needed because of
2140                          * the parindent that can occur or dissappear.
2141                          * The next row can change its height, if
2142                          * there is another layout before */
2143                         RowList::iterator tmprit = boost::next(prevrow);
2144                         if (tmprit != rows().end()) {
2145                                 breakAgain(tmprit);
2146                                 updateCounters();
2147                         }
2148                         setHeightOfRow(prevrow);
2149                 } else {
2150                         RowList::iterator nextrow = boost::next(getRow(old_cursor));
2151
2152                         tmpcursor = cursor;
2153                         cursor = old_cursor; // that undo can restore the right cursor position
2154 #warning FIXME. --end() iterator is usable here
2155                         ParagraphList::iterator endpit = boost::next(old_cursor.par());
2156                         while (endpit != ownerParagraphs().end() &&
2157                                endpit->getDepth()) {
2158                                 ++endpit;
2159                         }
2160
2161                         recordUndo(bv(), Undo::DELETE, old_cursor.par(), boost::prior(endpit));
2162                         cursor = tmpcursor;
2163
2164                         // delete old row
2165                         removeRow(getRow(old_cursor));
2166                         // delete old par
2167                         ownerParagraphs().erase(old_cursor.par());
2168
2169                         /* Breakagain the next par. Needed because of
2170                            the parindent that can occur or dissappear.
2171                            The next row can change its height, if
2172                            there is another layout before */
2173                         if (nextrow != rows().end()) {
2174                                 breakAgain(nextrow);
2175                                 updateCounters();
2176                         }
2177                 }
2178
2179                 // correct cursor y
2180                 setCursorIntern(cursor.par(), cursor.pos());
2181
2182                 if (selection_position_was_oldcursor_position) {
2183                         // correct selection
2184                         selection.cursor = cursor;
2185                 }
2186         }
2187         if (!deleted) {
2188                 if (old_cursor.par()->stripLeadingSpaces()) {
2189                         redoParagraph(old_cursor.par());
2190                         // correct cursor y
2191                         setCursorIntern(cursor.par(), cursor.pos());
2192                         selection.cursor = cursor;
2193                 }
2194         }
2195         return deleted;
2196 }
2197
2198
2199 ParagraphList & LyXText::ownerParagraphs() const
2200 {
2201         if (inset_owner) {
2202                 return inset_owner->paragraphs;
2203         }
2204         return bv_owner->buffer()->paragraphs;
2205 }
2206
2207
2208 bool LyXText::isInInset() const
2209 {
2210         // Sub-level has non-null bv owner and
2211         // non-null inset owner.
2212         return inset_owner != 0 && bv_owner != 0;
2213 }
2214
2215
2216 int defaultRowHeight()
2217 {
2218         LyXFont const font(LyXFont::ALL_SANE);
2219         return int(font_metrics::maxAscent(font)
2220                  + font_metrics::maxDescent(font) * 1.5);
2221 }