src/BufferView.cpp

   1 /**
   2  * \file BufferView.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Alfredo Braunstein
   7  * \author Lars Gullik Bjønnes
   8  * \author John Levon
   9  * \author André Pönitz
  10  * \author Jürgen Vigna
  11  *
  12  * Full author contact details are available in file CREDITS.
  13  */
  14
  15 #include <config.h>
  16
  17 #include "BufferView.h"
  18
  19 #include "BranchList.h"
  20 #include "Buffer.h"
  21 #include "buffer_funcs.h"
  22 #include "BufferList.h"
  23 #include "BufferParams.h"
  24 #include "CoordCache.h"
  25 #include "Cursor.h"
  26 #include "CutAndPaste.h"
  27 #include "DispatchResult.h"
  28 #include "ErrorList.h"
  29 #include "factory.h"
  30 #include "FloatList.h"
  31 #include "FuncRequest.h"
  32 #include "FuncStatus.h"
  33 #include "Intl.h"
  34 #include "InsetIterator.h"
  35 #include "Language.h"
  36 #include "LaTeXFeatures.h"
  37 #include "LayoutFile.h"
  38 #include "Lexer.h"
  39 #include "LyX.h"
  40 #include "LyXAction.h"
  41 #include "lyxfind.h"
  42 #include "LyXFunc.h"
  43 #include "Layout.h"
  44 #include "LyXRC.h"
  45 #include "MetricsInfo.h"
  46 #include "Paragraph.h"
  47 #include "ParagraphParameters.h"
  48 #include "ParIterator.h"
  49 #include "Session.h"
  50 #include "Text.h"
  51 #include "TextClass.h"
  52 #include "TextMetrics.h"
  53 #include "TexRow.h"
  54 #include "TocBackend.h"
  55 #include "VSpace.h"
  56 #include "WordLangTuple.h"
  57
  58 #include "insets/InsetBibtex.h"
  59 #include "insets/InsetCommand.h" // ChangeRefs
  60 #include "insets/InsetExternal.h"
  61 #include "insets/InsetGraphics.h"
  62 #include "insets/InsetRef.h"
  63 #include "insets/InsetText.h"
  64 #include "insets/InsetNote.h"
  65
  66 #include "frontends/alert.h"
  67 #include "frontends/Application.h"
  68 #include "frontends/Delegates.h"
  69 #include "frontends/FontMetrics.h"
  70 #include "frontends/Painter.h"
  71 #include "frontends/Selection.h"
  72
  73 #include "graphics/Previews.h"
  74
  75 #include "support/convert.h"
  76 #include "support/debug.h"
  77 #include "support/ExceptionMessage.h"
  78 #include "support/filetools.h"
  79 #include "support/gettext.h"
  80 #include "support/lstrings.h"
  81 #include "support/Package.h"
  82 #include "support/types.h"
  83
  84 #include <cerrno>
  85 #include <fstream>
  86 #include <functional>
  87 #include <iterator>
  88 #include <sstream>
  89 #include <vector>
  90
  91 using namespace std;
  92 using namespace lyx::support;
  93
  94 namespace lyx {
  95
  96 namespace Alert = frontend::Alert;
  97
  98 namespace {
  99
 100 /// Return an inset of this class if it exists at the current cursor position
 101 template <class T>
 102 T * getInsetByCode(Cursor const & cur, InsetCode code)
 103 {
 104         DocIterator it = cur;
 105         Inset * inset = it.nextInset();
 106         if (inset && inset->lyxCode() == code)
 107                 return static_cast<T*>(inset);
 108         return 0;
 109 }
 110
 111
 112 bool findInset(DocIterator & dit, vector<InsetCode> const & codes,
 113         bool same_content);
 114
 115 bool findNextInset(DocIterator & dit, vector<InsetCode> const & codes,
 116         docstring const & contents)
 117 {
 118         DocIterator tmpdit = dit;
 119
 120         while (tmpdit) {
 121                 Inset const * inset = tmpdit.nextInset();
 122                 if (inset
 123                     && std::find(codes.begin(), codes.end(), inset->lyxCode()) != codes.end()
 124                     && (contents.empty() ||
 125                     static_cast<InsetCommand const *>(inset)->getFirstNonOptParam() == contents)) {
 126                         dit = tmpdit;
 127                         return true;
 128                 }
 129                 tmpdit.forwardInset();
 130         }
 131
 132         return false;
 133 }
 134
 135
 136 /// Looks for next inset with one of the given codes.
 137 bool findInset(DocIterator & dit, vector<InsetCode> const & codes,
 138         bool same_content)
 139 {
 140         docstring contents;
 141         DocIterator tmpdit = dit;
 142         tmpdit.forwardInset();
 143         if (!tmpdit)
 144                 return false;
 145
 146         if (same_content) {
 147                 Inset const * inset = tmpdit.nextInset();
 148                 if (inset
 149                     && std::find(codes.begin(), codes.end(), inset->lyxCode()) != codes.end()) {
 150                         contents = static_cast<InsetCommand const *>(inset)->getFirstNonOptParam();
 151                 }
 152         }
 153
 154         if (!findNextInset(tmpdit, codes, contents)) {
 155                 if (dit.depth() != 1 || dit.pit() != 0 || dit.pos() != 0) {
 156                         Inset * inset = &tmpdit.bottom().inset();
 157                         tmpdit = doc_iterator_begin(&inset->buffer(), inset);
 158                         if (!findNextInset(tmpdit, codes, contents))
 159                                 return false;
 160                 } else {
 161                         return false;
 162                 }
 163         }
 164
 165         dit = tmpdit;
 166         return true;
 167 }
 168
 169
 170 /// Looks for next inset with the given code
 171 void findInset(DocIterator & dit, InsetCode code, bool same_content)
 172 {
 173         findInset(dit, vector<InsetCode>(1, code), same_content);
 174 }
 175
 176
 177 /// Moves cursor to the next inset with one of the given codes.
 178 void gotoInset(BufferView * bv, vector<InsetCode> const & codes,
 179                bool same_content)
 180 {
 181         Cursor tmpcur = bv->cursor();
 182         if (!findInset(tmpcur, codes, same_content)) {
 183                 bv->cursor().message(_("No more insets"));
 184                 return;
 185         }
 186
 187         tmpcur.clearSelection();
 188         bv->setCursor(tmpcur);
 189         bv->showCursor();
 190 }
 191
 192
 193 /// Moves cursor to the next inset with given code.
 194 void gotoInset(BufferView * bv, InsetCode code, bool same_content)
 195 {
 196         gotoInset(bv, vector<InsetCode>(1, code), same_content);
 197 }
 198
 199
 200 /// A map from a Text to the associated text metrics
 201 typedef map<Text const *, TextMetrics> TextMetricsCache;
 202
 203 enum ScreenUpdateStrategy {
 204         NoScreenUpdate,
 205         SingleParUpdate,
 206         FullScreenUpdate,
 207         DecorationUpdate
 208 };
 209
 210 } // anon namespace
 211
 212
 213 /////////////////////////////////////////////////////////////////////
 214 //
 215 // BufferView
 216 //
 217 /////////////////////////////////////////////////////////////////////
 218
 219 struct BufferView::Private
 220 {
 221         Private(BufferView & bv): wh_(0), cursor_(bv),
 222                 anchor_pit_(0), anchor_ypos_(0),
 223                 inlineCompletionUniqueChars_(0),
 224                 last_inset_(0), bookmark_edit_position_(0), gui_(0)
 225         {}
 226
 227         ///
 228         ScrollbarParameters scrollbarParameters_;
 229         ///
 230         ScreenUpdateStrategy update_strategy_;
 231         ///
 232         CoordCache coord_cache_;
 233
 234         /// Estimated average par height for scrollbar.
 235         int wh_;
 236         /// this is used to handle XSelection events in the right manner.
 237         struct {
 238                 CursorSlice cursor;
 239                 CursorSlice anchor;
 240                 bool set;
 241         } xsel_cache_;
 242         ///
 243         Cursor cursor_;
 244         ///
 245         pit_type anchor_pit_;
 246         ///
 247         int anchor_ypos_;
 248         ///
 249         vector<int> par_height_;
 250
 251         ///
 252         DocIterator inlineCompletionPos_;
 253         ///
 254         docstring inlineCompletion_;
 255         ///
 256         size_t inlineCompletionUniqueChars_;
 257
 258         /// keyboard mapping object.
 259         Intl intl_;
 260
 261         /// last visited inset.
 262         /** kept to send setMouseHover(false).
 263           * Not owned, so don't delete.
 264           */
 265         Inset * last_inset_;
 266
 267         // cache for id of the paragraph which was edited the last time
 268         int bookmark_edit_position_;
 269
 270         mutable TextMetricsCache text_metrics_;
 271
 272         /// Whom to notify.
 273         /** Not owned, so don't delete.
 274           */
 275         frontend::GuiBufferViewDelegate * gui_;
 276
 277         /// Cache for Find Next
 278         FuncRequest search_request_cache_;
 279
 280         ///
 281         map<string, Inset *> edited_insets_;
 282 };
 283
 284
 285 BufferView::BufferView(Buffer & buf)
 286         : width_(0), height_(0), full_screen_(false), buffer_(buf),
 287       d(new Private(*this))
 288 {
 289         d->xsel_cache_.set = false;
 290         d->intl_.initKeyMapper(lyxrc.use_kbmap);
 291
 292         d->cursor_.setBuffer(&buf);
 293         d->cursor_.push(buffer_.inset());
 294         d->cursor_.resetAnchor();
 295         d->cursor_.setCurrentFont();
 296
 297         if (graphics::Previews::status() != LyXRC::PREVIEW_OFF)
 298                 thePreviews().generateBufferPreviews(buffer_);
 299 }
 300
 301
 302 BufferView::~BufferView()
 303 {
 304         // current buffer is going to be switched-off, save cursor pos
 305         // Ideally, the whole cursor stack should be saved, but session
 306         // currently can only handle bottom (whole document) level pit and pos.
 307         // That is to say, if a cursor is in a nested inset, it will be
 308         // restore to the left of the top level inset.
 309         LastFilePosSection::FilePos fp;
 310         fp.pit = d->cursor_.bottom().pit();
 311         fp.pos = d->cursor_.bottom().pos();
 312         theSession().lastFilePos().save(buffer_.fileName(), fp);
 313
 314         delete d;
 315 }
 316
 317
 318 int BufferView::rightMargin() const
 319 {
 320         // The additional test for the case the outliner is opened.
 321         if (!full_screen_ ||
 322                 !lyxrc.full_screen_limit ||
 323                 width_ < lyxrc.full_screen_width + 20)
 324                         return 10;
 325
 326         return (width_ - lyxrc.full_screen_width) / 2;
 327 }
 328
 329
 330 int BufferView::leftMargin() const
 331 {
 332         return rightMargin();
 333 }
 334
 335
 336 bool BufferView::isTopScreen() const
 337 {
 338         return d->scrollbarParameters_.position == d->scrollbarParameters_.min;
 339 }
 340
 341
 342 bool BufferView::isBottomScreen() const
 343 {
 344         return d->scrollbarParameters_.position == d->scrollbarParameters_.max;
 345 }
 346
 347
 348 Intl & BufferView::getIntl()
 349 {
 350         return d->intl_;
 351 }
 352
 353
 354 Intl const & BufferView::getIntl() const
 355 {
 356         return d->intl_;
 357 }
 358
 359
 360 CoordCache & BufferView::coordCache()
 361 {
 362         return d->coord_cache_;
 363 }
 364
 365
 366 CoordCache const & BufferView::coordCache() const
 367 {
 368         return d->coord_cache_;
 369 }
 370
 371
 372 Buffer & BufferView::buffer()
 373 {
 374         return buffer_;
 375 }
 376
 377
 378 Buffer const & BufferView::buffer() const
 379 {
 380         return buffer_;
 381 }
 382
 383
 384 bool BufferView::fitCursor()
 385 {
 386         if (cursorStatus(d->cursor_) == CUR_INSIDE) {
 387                 frontend::FontMetrics const & fm =
 388                         theFontMetrics(d->cursor_.getFont().fontInfo());
 389                 int const asc = fm.maxAscent();
 390                 int const des = fm.maxDescent();
 391                 Point const p = getPos(d->cursor_, d->cursor_.boundary());
 392                 if (p.y_ - asc >= 0 && p.y_ + des < height_)
 393                         return false;
 394         }
 395         return true;
 396 }
 397
 398
 399 void BufferView::processUpdateFlags(Update::flags flags)
 400 {
 401         // last_inset_ points to the last visited inset. This pointer may become
 402         // invalid because of keyboard editing. Since all such operations
 403         // causes screen update(), I reset last_inset_ to avoid such a problem.
 404         d->last_inset_ = 0;
 405         // This is close to a hot-path.
 406         LYXERR(Debug::DEBUG, "BufferView::processUpdateFlags()"
 407                 << "[fitcursor = " << (flags & Update::FitCursor)
 408                 << ", forceupdate = " << (flags & Update::Force)
 409                 << ", singlepar = " << (flags & Update::SinglePar)
 410                 << "]  buffer: " << &buffer_);
 411
 412         buffer_.updateMacros();
 413
 414         // Now do the first drawing step if needed. This consists on updating
 415         // the CoordCache in updateMetrics().
 416         // The second drawing step is done in WorkArea::redraw() if needed.
 417
 418         // Case when no explicit update is requested.
 419         if (!flags) {
 420                 // no need to redraw anything.
 421                 d->update_strategy_ = NoScreenUpdate;
 422                 return;
 423         }
 424
 425         if (flags == Update::Decoration) {
 426                 d->update_strategy_ = DecorationUpdate;
 427                 buffer_.changed(false);
 428                 return;
 429         }
 430
 431         if (flags == Update::FitCursor
 432                 || flags == (Update::Decoration | Update::FitCursor)) {
 433                 // tell the frontend to update the screen if needed.
 434                 if (fitCursor()) {
 435                         showCursor();
 436                         return;
 437                 }
 438                 if (flags & Update::Decoration) {
 439                         d->update_strategy_ = DecorationUpdate;
 440                         buffer_.changed(false);
 441                         return;
 442                 }
 443                 // no screen update is needed.
 444                 d->update_strategy_ = NoScreenUpdate;
 445                 return;
 446         }
 447
 448         bool const full_metrics = flags & Update::Force || !singleParUpdate();
 449
 450         if (full_metrics)
 451                 // We have to update the full screen metrics.
 452                 updateMetrics();
 453
 454         if (!(flags & Update::FitCursor)) {
 455                 // Nothing to do anymore. Trigger a redraw and return
 456                 buffer_.changed(false);
 457                 return;
 458         }
 459
 460         // updateMetrics() does not update paragraph position
 461         // This is done at draw() time. So we need a redraw!
 462         buffer_.changed(false);
 463
 464         if (fitCursor()) {
 465                 // The cursor is off screen so ensure it is visible.
 466                 // refresh it:
 467                 showCursor();
 468         }
 469 }
 470
 471
 472 void BufferView::updateScrollbar()
 473 {
 474         if (height_ == 0 && width_ == 0)
 475                 return;
 476
 477         // We prefer fixed size line scrolling.
 478         d->scrollbarParameters_.single_step = defaultRowHeight();
 479         // We prefer full screen page scrolling.
 480         d->scrollbarParameters_.page_step = height_;
 481
 482         Text & t = buffer_.text();
 483         TextMetrics & tm = d->text_metrics_[&t];
 484
 485         LYXERR(Debug::GUI, " Updating scrollbar: height: "
 486                 << t.paragraphs().size()
 487                 << " curr par: " << d->cursor_.bottom().pit()
 488                 << " default height " << defaultRowHeight());
 489
 490         size_t const parsize = t.paragraphs().size();
 491         if (d->par_height_.size() != parsize) {
 492                 d->par_height_.clear();
 493                 // FIXME: We assume a default paragraph height of 2 rows. This
 494                 // should probably be pondered with the screen width.
 495                 d->par_height_.resize(parsize, defaultRowHeight() * 2);
 496         }
 497
 498         // Look at paragraph heights on-screen
 499         pair<pit_type, ParagraphMetrics const *> first = tm.first();
 500         pair<pit_type, ParagraphMetrics const *> last = tm.last();
 501         for (pit_type pit = first.first; pit <= last.first; ++pit) {
 502                 d->par_height_[pit] = tm.parMetrics(pit).height();
 503                 LYXERR(Debug::SCROLLING, "storing height for pit " << pit << " : "
 504                         << d->par_height_[pit]);
 505         }
 506
 507         int top_pos = first.second->position() - first.second->ascent();
 508         int bottom_pos = last.second->position() + last.second->descent();
 509         bool first_visible = first.first == 0 && top_pos >= 0;
 510         bool last_visible = last.first + 1 == int(parsize) && bottom_pos <= height_;
 511         if (first_visible && last_visible) {
 512                 d->scrollbarParameters_.min = 0;
 513                 d->scrollbarParameters_.max = 0;
 514                 return;
 515         }
 516
 517         d->scrollbarParameters_.min = top_pos;
 518         for (size_t i = 0; i != size_t(first.first); ++i)
 519                 d->scrollbarParameters_.min -= d->par_height_[i];
 520         d->scrollbarParameters_.max = bottom_pos;
 521         for (size_t i = last.first + 1; i != parsize; ++i)
 522                 d->scrollbarParameters_.max += d->par_height_[i];
 523
 524         d->scrollbarParameters_.position = 0;
 525         // The reference is the top position so we remove one page.
 526         if (lyxrc.scroll_below_document)
 527                 d->scrollbarParameters_.max -= minVisiblePart();
 528         else
 529                 d->scrollbarParameters_.max -= d->scrollbarParameters_.page_step;
 530 }
 531
 532
 533 ScrollbarParameters const & BufferView::scrollbarParameters() const
 534 {
 535         return d->scrollbarParameters_;
 536 }
 537
 538
 539 docstring BufferView::toolTip(int x, int y) const
 540 {
 541         // Get inset under mouse, if there is one.
 542         Inset const * covering_inset = getCoveringInset(buffer_.text(), x, y);
 543         if (!covering_inset)
 544                 // No inset, no tooltip...
 545                 return docstring();
 546         return covering_inset->toolTip(*this, x, y);
 547 }
 548
 549
 550 docstring BufferView::contextMenu(int x, int y) const
 551 {
 552         //If there is a selection, return the containing inset menu
 553         if (d->cursor_.selection())
 554                 return d->cursor_.inset().contextMenu(*this, x, y);
 555
 556         // Get inset under mouse, if there is one.
 557         Inset const * covering_inset = getCoveringInset(buffer_.text(), x, y);
 558         if (covering_inset)
 559                 return covering_inset->contextMenu(*this, x, y);
 560
 561         return buffer_.inset().contextMenu(*this, x, y);
 562 }
 563
 564
 565 void BufferView::scrollDocView(int value)
 566 {
 567         int const offset = value - d->scrollbarParameters_.position;
 568
 569         // No scrolling at all? No need to redraw anything
 570         if (offset == 0)
 571                 return;
 572
 573         // If the offset is less than 2 screen height, prefer to scroll instead.
 574         if (abs(offset) <= 2 * height_) {
 575                 d->anchor_ypos_ -= offset;
 576                 buffer_.changed(true);
 577                 return;
 578         }
 579
 580         // cut off at the top
 581         if (value <= d->scrollbarParameters_.min) {
 582                 DocIterator dit = doc_iterator_begin(&buffer_);
 583                 showCursor(dit);
 584                 LYXERR(Debug::SCROLLING, "scroll to top");
 585                 return;
 586         }
 587
 588         // cut off at the bottom
 589         if (value >= d->scrollbarParameters_.max) {
 590                 DocIterator dit = doc_iterator_end(&buffer_);
 591                 dit.backwardPos();
 592                 showCursor(dit);
 593                 LYXERR(Debug::SCROLLING, "scroll to bottom");
 594                 return;
 595         }
 596
 597         // find paragraph at target position
 598         int par_pos = d->scrollbarParameters_.min;
 599         pit_type i = 0;
 600         for (; i != int(d->par_height_.size()); ++i) {
 601                 par_pos += d->par_height_[i];
 602                 if (par_pos >= value)
 603                         break;
 604         }
 605
 606         if (par_pos < value) {
 607                 // It seems we didn't find the correct pit so stay on the safe side and
 608                 // scroll to bottom.
 609                 LYXERR0("scrolling position not found!");
 610                 scrollDocView(d->scrollbarParameters_.max);
 611                 return;
 612         }
 613
 614         DocIterator dit = doc_iterator_begin(&buffer_);
 615         dit.pit() = i;
 616         LYXERR(Debug::SCROLLING, "value = " << value << " -> scroll to pit " << i);
 617         showCursor(dit);
 618 }
 619
 620
 621 // FIXME: this method is not working well.
 622 void BufferView::setCursorFromScrollbar()
 623 {
 624         TextMetrics & tm = d->text_metrics_[&buffer_.text()];
 625
 626         int const height = 2 * defaultRowHeight();
 627         int const first = height;
 628         int const last = height_ - height;
 629         int newy = 0;
 630         Cursor const & oldcur = d->cursor_;
 631
 632         switch (cursorStatus(oldcur)) {
 633         case CUR_ABOVE:
 634                 newy = first;
 635                 break;
 636         case CUR_BELOW:
 637                 newy = last;
 638                 break;
 639         case CUR_INSIDE:
 640                 int const y = getPos(oldcur, oldcur.boundary()).y_;
 641                 newy = min(last, max(y, first));
 642                 if (y == newy)
 643                         return;
 644         }
 645         // We reset the cursor because cursorStatus() does not
 646         // work when the cursor is within mathed.
 647         Cursor cur(*this);
 648         cur.reset();
 649         tm.setCursorFromCoordinates(cur, 0, newy);
 650
 651         // update the bufferview cursor and notify insets
 652         // FIXME: Care about the d->cursor_ flags to redraw if needed
 653         Cursor old = d->cursor_;
 654         mouseSetCursor(cur);
 655         bool badcursor = notifyCursorLeavesOrEnters(old, d->cursor_);
 656         if (badcursor)
 657                 d->cursor_.fixIfBroken();
 658 }
 659
 660
 661 Change const BufferView::getCurrentChange() const
 662 {
 663         if (!d->cursor_.selection())
 664                 return Change(Change::UNCHANGED);
 665
 666         DocIterator dit = d->cursor_.selectionBegin();
 667         return dit.paragraph().lookupChange(dit.pos());
 668 }
 669
 670
 671 // this could be used elsewhere as well?
 672 // FIXME: This does not work within mathed!
 673 CursorStatus BufferView::cursorStatus(DocIterator const & dit) const
 674 {
 675         Point const p = getPos(dit, dit.boundary());
 676         if (p.y_ < 0)
 677                 return CUR_ABOVE;
 678         if (p.y_ > workHeight())
 679                 return CUR_BELOW;
 680         return CUR_INSIDE;
 681 }
 682
 683
 684 void BufferView::bookmarkEditPosition()
 685 {
 686         // Don't eat cpu time for each keystroke
 687         if (d->cursor_.paragraph().id() == d->bookmark_edit_position_)
 688                 return;
 689         saveBookmark(0);
 690         d->bookmark_edit_position_ = d->cursor_.paragraph().id();
 691 }
 692
 693
 694 void BufferView::saveBookmark(unsigned int idx)
 695 {
 696         // tentatively save bookmark, id and pos will be used to
 697         // acturately locate a bookmark in a 'live' lyx session.
 698         // pit and pos will be updated with bottom level pit/pos
 699         // when lyx exits.
 700         theSession().bookmarks().save(
 701                 buffer_.fileName(),
 702                 d->cursor_.bottom().pit(),
 703                 d->cursor_.bottom().pos(),
 704                 d->cursor_.paragraph().id(),
 705                 d->cursor_.pos(),
 706                 idx
 707         );
 708         if (idx)
 709                 // emit message signal.
 710                 message(_("Save bookmark"));
 711 }
 712
 713
 714 bool BufferView::moveToPosition(pit_type bottom_pit, pos_type bottom_pos,
 715         int top_id, pos_type top_pos)
 716 {
 717         bool success = false;
 718         DocIterator dit;
 719
 720         d->cursor_.clearSelection();
 721
 722         // if a valid par_id is given, try it first
 723         // This is the case for a 'live' bookmark when unique paragraph ID
 724         // is used to track bookmarks.
 725         if (top_id > 0) {
 726                 dit = buffer_.getParFromID(top_id);
 727                 if (!dit.atEnd()) {
 728                         dit.pos() = min(dit.paragraph().size(), top_pos);
 729                         // Some slices of the iterator may not be
 730                         // reachable (e.g. closed collapsable inset)
 731                         // so the dociterator may need to be
 732                         // shortened. Otherwise, setCursor may crash
 733                         // lyx when the cursor can not be set to these
 734                         // insets.
 735                         size_t const n = dit.depth();
 736                         for (size_t i = 0; i < n; ++i)
 737                                 if (!dit[i].inset().editable()) {
 738                                         dit.resize(i);
 739                                         break;
 740                                 }
 741                         success = true;
 742                 }
 743         }
 744
 745         // if top_id == 0, or searching through top_id failed
 746         // This is the case for a 'restored' bookmark when only bottom
 747         // (document level) pit was saved. Because of this, bookmark
 748         // restoration is inaccurate. If a bookmark was within an inset,
 749         // it will be restored to the left of the outmost inset that contains
 750         // the bookmark.
 751         if (bottom_pit < int(buffer_.paragraphs().size())) {
 752                 dit = doc_iterator_begin(&buffer_);
 753
 754                 dit.pit() = bottom_pit;
 755                 dit.pos() = min(bottom_pos, dit.paragraph().size());
 756                 success = true;
 757         }
 758
 759         if (success) {
 760                 // Note: only bottom (document) level pit is set.
 761                 setCursor(dit);
 762                 // set the current font.
 763                 d->cursor_.setCurrentFont();
 764                 // To center the screen on this new position we need the
 765                 // paragraph position which is computed at draw() time.
 766                 // So we need a redraw!
 767                 buffer_.changed(false);
 768                 if (fitCursor())
 769                         showCursor();
 770         }
 771
 772         return success;
 773 }
 774
 775
 776 void BufferView::translateAndInsert(char_type c, Text * t, Cursor & cur)
 777 {
 778         if (lyxrc.rtl_support) {
 779                 if (d->cursor_.real_current_font.isRightToLeft()) {
 780                         if (d->intl_.keymap == Intl::PRIMARY)
 781                                 d->intl_.keyMapSec();
 782                 } else {
 783                         if (d->intl_.keymap == Intl::SECONDARY)
 784                                 d->intl_.keyMapPrim();
 785                 }
 786         }
 787
 788         d->intl_.getTransManager().translateAndInsert(c, t, cur);
 789 }
 790
 791
 792 int BufferView::workWidth() const
 793 {
 794         return width_;
 795 }
 796
 797
 798 void BufferView::recenter()
 799 {
 800         showCursor(d->cursor_, true);
 801 }
 802
 803
 804 void BufferView::showCursor()
 805 {
 806         showCursor(d->cursor_, false);
 807 }
 808
 809
 810 void BufferView::showCursor(DocIterator const & dit, bool recenter)
 811 {
 812         if (scrollToCursor(dit, recenter))
 813                 buffer_.changed(false);
 814 }
 815
 816
 817 void BufferView::scrollToCursor()
 818 {
 819         scrollToCursor(d->cursor_, false);
 820 }
 821
 822
 823 bool BufferView::scrollToCursor(DocIterator const & dit, bool recenter)
 824 {
 825         // We are not properly started yet, delay until resizing is
 826         // done.
 827         if (height_ == 0)
 828                 return false;
 829
 830         LYXERR(Debug::SCROLLING, "recentering!");
 831
 832         CursorSlice const & bot = dit.bottom();
 833         TextMetrics & tm = d->text_metrics_[bot.text()];
 834
 835         pos_type const max_pit = pos_type(bot.text()->paragraphs().size() - 1);
 836         int bot_pit = bot.pit();
 837         if (bot_pit > max_pit) {
 838                 // FIXME: Why does this happen?
 839                 LYXERR0("bottom pit is greater that max pit: "
 840                         << bot_pit << " > " << max_pit);
 841                 bot_pit = max_pit;
 842         }
 843
 844         if (bot_pit == tm.first().first - 1)
 845                 tm.newParMetricsUp();
 846         else if (bot_pit == tm.last().first + 1)
 847                 tm.newParMetricsDown();
 848
 849         if (tm.contains(bot_pit)) {
 850                 ParagraphMetrics const & pm = tm.parMetrics(bot_pit);
 851                 LASSERT(!pm.rows().empty(), /**/);
 852                 // FIXME: smooth scrolling doesn't work in mathed.
 853                 CursorSlice const & cs = dit.innerTextSlice();
 854                 int offset = coordOffset(dit, dit.boundary()).y_;
 855                 int ypos = pm.position() + offset;
 856                 Dimension const & row_dim =
 857                         pm.getRow(cs.pos(), dit.boundary()).dimension();
 858                 int scrolled = 0;
 859                 if (recenter)
 860                         scrolled = scroll(ypos - height_/2);
 861                 else if (ypos - row_dim.ascent() < 0)
 862                         scrolled = scrollUp(- ypos + row_dim.ascent());
 863                 else if (ypos + row_dim.descent() > height_)
 864                         scrolled = scrollDown(ypos - height_ + defaultRowHeight() );
 865
 866                 // else, nothing to do, the cursor is already visible so we just return.
 867                 if (scrolled != 0) {
 868                         updateMetrics();
 869                         return true;
 870                 }
 871                 return false;
 872         }
 873
 874         // fix inline completion position
 875         if (d->inlineCompletionPos_.fixIfBroken())
 876                 d->inlineCompletionPos_ = DocIterator();
 877
 878         tm.redoParagraph(bot_pit);
 879         ParagraphMetrics const & pm = tm.parMetrics(bot_pit);
 880         int offset = coordOffset(dit, dit.boundary()).y_;
 881
 882         d->anchor_pit_ = bot_pit;
 883         CursorSlice const & cs = dit.innerTextSlice();
 884         Dimension const & row_dim =
 885                 pm.getRow(cs.pos(), dit.boundary()).dimension();
 886
 887         if (recenter)
 888                 d->anchor_ypos_ = height_/2;
 889         else if (d->anchor_pit_ == 0)
 890                 d->anchor_ypos_ = offset + pm.ascent();
 891         else if (d->anchor_pit_ == max_pit)
 892                 d->anchor_ypos_ = height_ - offset - row_dim.descent();
 893         else if (offset > height_)
 894                 d->anchor_ypos_ = height_ - offset - defaultRowHeight();
 895         else
 896                 d->anchor_ypos_ = defaultRowHeight() * 2;
 897
 898         updateMetrics();
 899         return true;
 900 }
 901
 902
 903 void BufferView::updateLayout(DocumentClass const * const oldlayout)
 904 {
 905         message(_("Converting document to new document class..."));
 906
 907         StableDocIterator backcur(d->cursor_);
 908         ErrorList & el = buffer_.errorList("Class Switch");
 909         cap::switchBetweenClasses(
 910                         oldlayout, buffer_.params().documentClassPtr(),
 911                         static_cast<InsetText &>(buffer_.inset()), el);
 912
 913         setCursor(backcur.asDocIterator(&buffer_));
 914
 915         buffer_.errors("Class Switch");
 916         buffer_.updateLabels();
 917 }
 918
 919 /** Return the change status at cursor position, taking in account the
 920  * status at each level of the document iterator (a table in a deleted
 921  * footnote is deleted).
 922  * When \param outer is true, the top slice is not looked at.
 923  */
 924 static Change::Type lookupChangeType(DocIterator const & dit, bool outer = false)
 925 {
 926         size_t const depth = dit.depth() - (outer ? 1 : 0);
 927
 928         for (size_t i = 0 ; i < depth ; ++i) {
 929                 CursorSlice const & slice = dit[i];
 930                 if (!slice.inset().inMathed()
 931                     && slice.pos() < slice.paragraph().size()) {
 932                         Change::Type const ch = slice.paragraph().lookupChange(slice.pos()).type;
 933                         if (ch != Change::UNCHANGED)
 934                                 return ch;
 935                 }
 936         }
 937         return Change::UNCHANGED;
 938 }
 939
 940
 941 bool BufferView::getStatus(FuncRequest const & cmd, FuncStatus & flag)
 942 {
 943         // Can we use a readonly buffer?
 944         if (buffer_.isReadonly()
 945             && !lyxaction.funcHasFlag(cmd.action, LyXAction::ReadOnly)
 946             && !lyxaction.funcHasFlag(cmd.action, LyXAction::NoBuffer)) {
 947                 flag.message(from_utf8(N_("Document is read-only")));
 948                 flag.setEnabled(false);
 949                 return true;
 950         }
 951         // Are we in a DELETED change-tracking region?
 952         if (lookupChangeType(d->cursor_, true) == Change::DELETED
 953             && !lyxaction.funcHasFlag(cmd.action, LyXAction::ReadOnly)
 954             && !lyxaction.funcHasFlag(cmd.action, LyXAction::NoBuffer)) {
 955                 flag.message(from_utf8(N_("This portion of the document is deleted.")));
 956                 flag.setEnabled(false);
 957                 return true;
 958         }
 959
 960         Cursor & cur = d->cursor_;
 961
 962         if (cur.getStatus(cmd, flag))
 963                 return true;
 964
 965         switch (cmd.action) {
 966
 967         // FIXME: This is a bit problematic because we don't check is this is a
 968         // document BufferView or not for these LFUNs. We probably have to
 969         // dispatch both to currentBufferView() and, if that fails,
 970         // to documentBufferView(); same as we do know for current Buffer and
 971         // document Buffer. Ideally those LFUN should go to Buffer as they*
 972         // operate on the full Buffer and the cursor is only needed either for
 973         // an Undo record or to restore a cursor position. But we don't know
 974         // how to do that inside Buffer of course.
 975         case LFUN_BUFFER_PARAMS_APPLY:
 976         case LFUN_LAYOUT_MODULES_CLEAR:
 977         case LFUN_LAYOUT_MODULE_ADD:
 978         case LFUN_LAYOUT_RELOAD:
 979         case LFUN_TEXTCLASS_APPLY:
 980         case LFUN_TEXTCLASS_LOAD:
 981                 flag.setEnabled(!buffer_.isReadonly());
 982                 break;
 983
 984         case LFUN_UNDO:
 985                 flag.setEnabled(buffer_.undo().hasUndoStack());
 986                 break;
 987         case LFUN_REDO:
 988                 flag.setEnabled(buffer_.undo().hasRedoStack());
 989                 break;
 990         case LFUN_FILE_INSERT:
 991         case LFUN_FILE_INSERT_PLAINTEXT_PARA:
 992         case LFUN_FILE_INSERT_PLAINTEXT:
 993         case LFUN_BOOKMARK_SAVE:
 994                 // FIXME: Actually, these LFUNS should be moved to Text
 995                 flag.setEnabled(cur.inTexted());
 996                 break;
 997
 998         case LFUN_FONT_STATE:
 999         case LFUN_LABEL_INSERT:
1000         case LFUN_INFO_INSERT:
1001         case LFUN_INSET_EDIT:
1002         case LFUN_PARAGRAPH_GOTO:
1003         case LFUN_NOTE_NEXT:
1004         case LFUN_REFERENCE_NEXT:
1005         case LFUN_WORD_FIND:
1006         case LFUN_WORD_FIND_FORWARD:
1007         case LFUN_WORD_FIND_BACKWARD:
1008         case LFUN_WORD_FINDADV:
1009         case LFUN_WORD_REPLACE:
1010         case LFUN_MARK_OFF:
1011         case LFUN_MARK_ON:
1012         case LFUN_MARK_TOGGLE:
1013         case LFUN_SCREEN_RECENTER:
1014         case LFUN_SCREEN_SHOW_CURSOR:
1015         case LFUN_BIBTEX_DATABASE_ADD:
1016         case LFUN_BIBTEX_DATABASE_DEL:
1017         case LFUN_ALL_INSETS_TOGGLE:
1018         case LFUN_STATISTICS:
1019         case LFUN_BRANCH_ADD_INSERT:
1020         case LFUN_KEYMAP_OFF:
1021         case LFUN_KEYMAP_PRIMARY:
1022         case LFUN_KEYMAP_SECONDARY:
1023         case LFUN_KEYMAP_TOGGLE:
1024                 flag.setEnabled(true);
1025                 break;
1026
1027         case LFUN_REGEXP_MODE:
1028                 // FIXME: Test if current WorkArea is the search WorkArea
1029                 flag.setEnabled(buffer().isInternal() && !cur.inRegexped());
1030                 break;
1031
1032         case LFUN_LABEL_COPY_AS_REF: {
1033                 // if there is an inset at cursor, see whether it
1034                 // handles the lfun
1035                 Inset * inset = cur.nextInset();
1036                 if (!inset || !inset->getStatus(cur, cmd, flag))
1037                         flag.setEnabled(false);
1038                 break;
1039         }
1040
1041         case LFUN_LABEL_GOTO: {
1042                 flag.setEnabled(!cmd.argument().empty()
1043                     || getInsetByCode<InsetRef>(cur, REF_CODE));
1044                 break;
1045         }
1046
1047         case LFUN_CHANGES_TRACK:
1048                 flag.setEnabled(true);
1049                 flag.setOnOff(buffer_.params().trackChanges);
1050                 break;
1051
1052         case LFUN_CHANGES_OUTPUT:
1053                 flag.setEnabled(true);
1054                 flag.setOnOff(buffer_.params().outputChanges);
1055                 break;
1056
1057         case LFUN_CHANGES_MERGE:
1058         case LFUN_CHANGE_NEXT:
1059         case LFUN_CHANGE_PREVIOUS:
1060         case LFUN_ALL_CHANGES_ACCEPT:
1061         case LFUN_ALL_CHANGES_REJECT:
1062                 // TODO: context-sensitive enabling of LFUNs
1063                 // In principle, these command should only be enabled if there
1064                 // is a change in the document. However, without proper
1065                 // optimizations, this will inevitably result in poor performance.
1066                 flag.setEnabled(true);
1067                 break;
1068
1069         case LFUN_BUFFER_TOGGLE_COMPRESSION: {
1070                 flag.setOnOff(buffer_.params().compressed);
1071                 break;
1072         }
1073
1074         case LFUN_SCREEN_UP:
1075         case LFUN_SCREEN_DOWN:
1076         case LFUN_SCROLL:
1077         case LFUN_SCREEN_UP_SELECT:
1078         case LFUN_SCREEN_DOWN_SELECT:
1079         case LFUN_INSET_FORALL:
1080                 flag.setEnabled(true);
1081                 break;
1082
1083         case LFUN_LAYOUT_TABULAR:
1084                 flag.setEnabled(cur.innerInsetOfType(TABULAR_CODE));
1085                 break;
1086
1087         case LFUN_LAYOUT:
1088                 flag.setEnabled(!cur.inset().forcePlainLayout(cur.idx()));
1089                 break;
1090
1091         case LFUN_LAYOUT_PARAGRAPH:
1092                 flag.setEnabled(cur.inset().allowParagraphCustomization(cur.idx()));
1093                 break;
1094
1095         case LFUN_DIALOG_SHOW_NEW_INSET:
1096                 // FIXME: this is wrong, but I do not understand the
1097                 // intent (JMarc)
1098                 if (cur.inset().lyxCode() == CAPTION_CODE)
1099                         return cur.inset().getStatus(cur, cmd, flag);
1100                 // FIXME we should consider passthru paragraphs too.
1101                 flag.setEnabled(!cur.inset().getLayout().isPassThru());
1102                 break;
1103
1104         case LFUN_CITATION_INSERT: {
1105                 FuncRequest fr(LFUN_INSET_INSERT, "citation");
1106                 // FIXME: This could turn in a recursive hell.
1107                 // Shouldn't we use Buffer::getStatus() instead?
1108                 flag.setEnabled(lyx::getStatus(fr).enabled());
1109                 break;
1110         }
1111         case LFUN_INSET_APPLY: {
1112                 string const name = cmd.getArg(0);
1113                 Inset * inset = editedInset(name);
1114                 if (inset) {
1115                         FuncRequest fr(LFUN_INSET_MODIFY, cmd.argument());
1116                         FuncStatus fs;
1117                         if (!inset->getStatus(cur, fr, fs)) {
1118                                 // Every inset is supposed to handle this
1119                                 LASSERT(false, break);
1120                         }
1121                         flag |= fs;
1122                 } else {
1123                         FuncRequest fr(LFUN_INSET_INSERT, cmd.argument());
1124                         flag |= lyx::getStatus(fr);
1125                 }
1126                 break;
1127         }
1128
1129         default:
1130                 flag.setEnabled(false);
1131                 return false;
1132         }
1133
1134         return true;
1135 }
1136
1137
1138 Inset * BufferView::editedInset(string const & name) const
1139 {
1140         map<string, Inset *>::const_iterator it = d->edited_insets_.find(name);
1141         return it == d->edited_insets_.end() ? 0 : it->second;
1142 }
1143
1144
1145 void BufferView::editInset(string const & name, Inset * inset)
1146 {
1147         d->edited_insets_[name] = inset;
1148 }
1149
1150
1151 bool BufferView::dispatch(FuncRequest const & cmd)
1152 {
1153         //lyxerr << [ cmd = " << cmd << "]" << endl;
1154
1155         // Make sure that the cached BufferView is correct.
1156         LYXERR(Debug::ACTION, " action[" << cmd.action << ']'
1157                 << " arg[" << to_utf8(cmd.argument()) << ']'
1158                 << " x[" << cmd.x << ']'
1159                 << " y[" << cmd.y << ']'
1160                 << " button[" << cmd.button() << ']');
1161
1162         string const argument = to_utf8(cmd.argument());
1163         Cursor & cur = d->cursor_;
1164
1165         // Don't dispatch function that does not apply to internal buffers.
1166         if (buffer_.isInternal()
1167             && lyxaction.funcHasFlag(cmd.action, LyXAction::NoInternal))
1168                 return false;
1169
1170         // We'll set this back to false if need be.
1171         bool dispatched = true;
1172         buffer_.undo().beginUndoGroup();
1173
1174         switch (cmd.action) {
1175
1176         case LFUN_BUFFER_PARAMS_APPLY: {
1177                 DocumentClass const * const oldClass = buffer_.params().documentClassPtr();
1178                 cur.recordUndoFullDocument();
1179                 istringstream ss(to_utf8(cmd.argument()));
1180                 Lexer lex;
1181                 lex.setStream(ss);
1182                 int const unknown_tokens = buffer_.readHeader(lex);
1183                 if (unknown_tokens != 0) {
1184                         LYXERR0("Warning in LFUN_BUFFER_PARAMS_APPLY!\n"
1185                                                 << unknown_tokens << " unknown token"
1186                                                 << (unknown_tokens == 1 ? "" : "s"));
1187                 }
1188                 updateLayout(oldClass);
1189
1190                 // We are most certainly here because of a change in the document
1191                 // It is then better to make sure that all dialogs are in sync with
1192                 // current document settings.
1193                 processUpdateFlags(Update::Force | Update::FitCursor);
1194                 break;
1195         }
1196
1197         case LFUN_LAYOUT_MODULES_CLEAR: {
1198                 DocumentClass const * const oldClass =
1199                         buffer_.params().documentClassPtr();
1200                 cur.recordUndoFullDocument();
1201                 buffer_.params().clearLayoutModules();
1202                 buffer_.params().makeDocumentClass();
1203                 updateLayout(oldClass);
1204                 processUpdateFlags(Update::Force | Update::FitCursor);
1205                 break;
1206         }
1207
1208         case LFUN_LAYOUT_MODULE_ADD: {
1209                 BufferParams const & params = buffer_.params();
1210                 if (!params.moduleCanBeAdded(argument)) {
1211                         LYXERR0("Module `" << argument <<
1212                                 "' cannot be added due to failed requirements or "
1213                                 "conflicts with installed modules.");
1214                         break;
1215                 }
1216                 DocumentClass const * const oldClass = params.documentClassPtr();
1217                 cur.recordUndoFullDocument();
1218                 buffer_.params().addLayoutModule(argument);
1219                 buffer_.params().makeDocumentClass();
1220                 updateLayout(oldClass);
1221                 processUpdateFlags(Update::Force | Update::FitCursor);
1222                 break;
1223         }
1224
1225         case LFUN_TEXTCLASS_APPLY: {
1226                 if (!LayoutFileList::get().load(argument, buffer_.temppath()) &&
1227                         !LayoutFileList::get().load(argument, buffer_.filePath()))
1228                         break;
1229
1230                 LayoutFile const * old_layout = buffer_.params().baseClass();
1231                 LayoutFile const * new_layout = &(LayoutFileList::get()[argument]);
1232
1233                 if (old_layout == new_layout)
1234                         // nothing to do
1235                         break;
1236
1237                 //Save the old, possibly modular, layout for use in conversion.
1238                 DocumentClass const * const oldDocClass =
1239                         buffer_.params().documentClassPtr();
1240                 cur.recordUndoFullDocument();
1241                 buffer_.params().setBaseClass(argument);
1242                 buffer_.params().makeDocumentClass();
1243                 updateLayout(oldDocClass);
1244                 processUpdateFlags(Update::Force | Update::FitCursor);
1245                 break;
1246         }
1247
1248         case LFUN_TEXTCLASS_LOAD:
1249                 LayoutFileList::get().load(argument, buffer_.temppath()) ||
1250                 LayoutFileList::get().load(argument, buffer_.filePath());
1251                 break;
1252
1253         case LFUN_LAYOUT_RELOAD: {
1254                 DocumentClass const * const oldClass = buffer_.params().documentClassPtr();
1255                 LayoutFileIndex bc = buffer_.params().baseClassID();
1256                 LayoutFileList::get().reset(bc);
1257                 buffer_.params().setBaseClass(bc);
1258                 buffer_.params().makeDocumentClass();
1259                 updateLayout(oldClass);
1260                 processUpdateFlags(Update::Force | Update::FitCursor);
1261                 break;
1262         }
1263
1264         case LFUN_UNDO:
1265                 cur.message(_("Undo"));
1266                 cur.clearSelection();
1267                 if (!cur.textUndo())
1268                         cur.message(_("No further undo information"));
1269                 else
1270                         processUpdateFlags(Update::Force | Update::FitCursor);
1271                 break;
1272
1273         case LFUN_REDO:
1274                 cur.message(_("Redo"));
1275                 cur.clearSelection();
1276                 if (!cur.textRedo())
1277                         cur.message(_("No further redo information"));
1278                 else
1279                         processUpdateFlags(Update::Force | Update::FitCursor);
1280                 break;
1281
1282         case LFUN_FONT_STATE:
1283                 cur.message(cur.currentState());
1284                 break;
1285
1286         case LFUN_BOOKMARK_SAVE:
1287                 saveBookmark(convert<unsigned int>(to_utf8(cmd.argument())));
1288                 break;
1289
1290         case LFUN_LABEL_GOTO: {
1291                 docstring label = cmd.argument();
1292                 if (label.empty()) {
1293                         InsetRef * inset =
1294                                 getInsetByCode<InsetRef>(cur, REF_CODE);
1295                         if (inset) {
1296                                 label = inset->getParam("reference");
1297                                 // persistent=false: use temp_bookmark
1298                                 saveBookmark(0);
1299                         }
1300                 }
1301                 if (!label.empty())
1302                         gotoLabel(label);
1303                 break;
1304         }
1305
1306         case LFUN_INSET_EDIT: {
1307                 FuncRequest fr(cmd);
1308                 // if there is an inset at cursor, see whether it
1309                 // can be modified.
1310                 Inset * inset = cur.nextInset();
1311                 if (inset)
1312                         inset->dispatch(cur, fr);
1313                 // if it did not work, try the underlying inset.
1314                 if (!inset || !cur.result().dispatched())
1315                         cur.dispatch(cmd);
1316
1317                 // FIXME I'm adding the last break to solve a crash,
1318                 // but that is obviously not right.
1319                 if (!cur.result().dispatched())
1320                         // It did not work too; no action needed.
1321                         break;
1322                 break;
1323         }
1324
1325         case LFUN_PARAGRAPH_GOTO: {
1326                 int const id = convert<int>(cmd.getArg(0));
1327                 int const pos = convert<int>(cmd.getArg(1));
1328                 int i = 0;
1329                 for (Buffer * b = &buffer_; i == 0 || b != &buffer_;
1330                         b = theBufferList().next(b)) {
1331
1332                         DocIterator dit = b->getParFromID(id);
1333                         if (dit.atEnd()) {
1334                                 LYXERR(Debug::INFO, "No matching paragraph found! [" << id << "].");
1335                                 ++i;
1336                                 continue;
1337                         }
1338                         LYXERR(Debug::INFO, "Paragraph " << dit.paragraph().id()
1339                                 << " found in buffer `"
1340                                 << b->absFileName() << "'.");
1341
1342                         if (b == &buffer_) {
1343                                 // Set the cursor
1344                                 dit.pos() = pos;
1345                                 setCursor(dit);
1346                                 processUpdateFlags(Update::Force | Update::FitCursor);
1347                         } else {
1348                                 // Switch to other buffer view and resend cmd
1349                                 theLyXFunc().dispatch(FuncRequest(
1350                                         LFUN_BUFFER_SWITCH, b->absFileName()));
1351                                 theLyXFunc().dispatch(cmd);
1352                         }
1353                         break;
1354                 }
1355                 break;
1356         }
1357
1358         case LFUN_NOTE_NEXT:
1359                 gotoInset(this, NOTE_CODE, false);
1360                 break;
1361
1362         case LFUN_REFERENCE_NEXT: {
1363                 vector<InsetCode> tmp;
1364                 tmp.push_back(LABEL_CODE);
1365                 tmp.push_back(REF_CODE);
1366                 gotoInset(this, tmp, true);
1367                 break;
1368         }
1369
1370         case LFUN_CHANGES_TRACK:
1371                 buffer_.params().trackChanges = !buffer_.params().trackChanges;
1372                 break;
1373
1374         case LFUN_CHANGES_OUTPUT:
1375                 buffer_.params().outputChanges = !buffer_.params().outputChanges;
1376                 if (buffer_.params().outputChanges) {
1377                         bool dvipost    = LaTeXFeatures::isAvailable("dvipost");
1378                         bool xcolorulem = LaTeXFeatures::isAvailable("ulem") &&
1379                                           LaTeXFeatures::isAvailable("xcolor");
1380
1381                         if (!dvipost && !xcolorulem) {
1382                                 Alert::warning(_("Changes not shown in LaTeX output"),
1383                                                _("Changes will not be highlighted in LaTeX output, "
1384                                                  "because neither dvipost nor xcolor/ulem are installed.\n"
1385                                                  "Please install these packages or redefine "
1386                                                  "\\lyxadded and \\lyxdeleted in the LaTeX preamble."));
1387                         } else if (!xcolorulem) {
1388                                 Alert::warning(_("Changes not shown in LaTeX output"),
1389                                                _("Changes will not be highlighted in LaTeX output "
1390                                                  "when using pdflatex, because xcolor and ulem are not installed.\n"
1391                                                  "Please install both packages or redefine "
1392                                                  "\\lyxadded and \\lyxdeleted in the LaTeX preamble."));
1393                         }
1394                 }
1395                 break;
1396
1397         case LFUN_CHANGE_NEXT:
1398                 findNextChange(this);
1399                 // FIXME: Move this LFUN to Buffer so that we don't have to do this:
1400                 processUpdateFlags(Update::Force | Update::FitCursor);
1401                 break;
1402
1403         case LFUN_CHANGE_PREVIOUS:
1404                 findPreviousChange(this);
1405                 // FIXME: Move this LFUN to Buffer so that we don't have to do this:
1406                 processUpdateFlags(Update::Force | Update::FitCursor);
1407                 break;
1408
1409         case LFUN_CHANGES_MERGE:
1410                 if (findNextChange(this) || findPreviousChange(this)) {
1411                         processUpdateFlags(Update::Force | Update::FitCursor);
1412                         showDialog("changes");
1413                 }
1414                 break;
1415
1416         case LFUN_ALL_CHANGES_ACCEPT:
1417                 // select complete document
1418                 cur.reset();
1419                 cur.selHandle(true);
1420                 buffer_.text().cursorBottom(cur);
1421                 // accept everything in a single step to support atomic undo
1422                 buffer_.text().acceptOrRejectChanges(cur, Text::ACCEPT);
1423                 // FIXME: Move this LFUN to Buffer so that we don't have to do this:
1424                 processUpdateFlags(Update::Force | Update::FitCursor);
1425                 break;
1426
1427         case LFUN_ALL_CHANGES_REJECT:
1428                 // select complete document
1429                 cur.reset();
1430                 cur.selHandle(true);
1431                 buffer_.text().cursorBottom(cur);
1432                 // reject everything in a single step to support atomic undo
1433                 // Note: reject does not work recursively; the user may have to repeat the operation
1434                 buffer_.text().acceptOrRejectChanges(cur, Text::REJECT);
1435                 // FIXME: Move this LFUN to Buffer so that we don't have to do this:
1436                 processUpdateFlags(Update::Force | Update::FitCursor);
1437                 break;
1438
1439         case LFUN_WORD_FIND_FORWARD:
1440         case LFUN_WORD_FIND_BACKWARD: {
1441                 static docstring last_search;
1442                 docstring searched_string;
1443
1444                 if (!cmd.argument().empty()) {
1445                         last_search = cmd.argument();
1446                         searched_string = cmd.argument();
1447                 } else {
1448                         searched_string = last_search;
1449                 }
1450
1451                 if (searched_string.empty())
1452                         break;
1453
1454                 bool const fw = cmd.action == LFUN_WORD_FIND_FORWARD;
1455                 docstring const data =
1456                         find2string(searched_string, true, false, fw);
1457                 find(this, FuncRequest(LFUN_WORD_FIND, data));
1458                 break;
1459         }
1460
1461         case LFUN_WORD_FIND: {
1462                 FuncRequest req = cmd;
1463                 if (cmd.argument().empty() && !d->search_request_cache_.argument().empty())
1464                         req = d->search_request_cache_;
1465                 if (req.argument().empty()) {
1466                         theLyXFunc().dispatch(FuncRequest(LFUN_DIALOG_SHOW, "findreplace"));
1467                         break;
1468                 }
1469                 if (find(this, req))
1470                         showCursor();
1471                 else
1472                         message(_("String not found!"));
1473                 d->search_request_cache_ = req;
1474                 break;
1475         }
1476
1477         case LFUN_WORD_REPLACE: {
1478                 bool has_deleted = false;
1479                 if (cur.selection()) {
1480                         DocIterator beg = cur.selectionBegin();
1481                         DocIterator end = cur.selectionEnd();
1482                         if (beg.pit() == end.pit()) {
1483                                 for (pos_type p = beg.pos() ; p < end.pos() ; ++p) {
1484                                         if (!cur.inMathed()
1485                                             && cur.paragraph().isDeleted(p))
1486                                                 has_deleted = true;
1487                                 }
1488                         }
1489                 }
1490                 replace(this, cmd, has_deleted);
1491                 break;
1492         }
1493
1494         case LFUN_WORD_FINDADV: {
1495                 FindAndReplaceOptions opt;
1496                 istringstream iss(to_utf8(cmd.argument()));
1497                 iss >> opt;
1498                 if (findAdv(this, opt))
1499                         cur.dispatched();
1500                 else
1501                         cur.undispatched();
1502                 break;
1503         }
1504
1505         case LFUN_MARK_OFF:
1506                 cur.clearSelection();
1507                 cur.message(from_utf8(N_("Mark off")));
1508                 break;
1509
1510         case LFUN_MARK_ON:
1511                 cur.clearSelection();
1512                 cur.setMark(true);
1513                 cur.message(from_utf8(N_("Mark on")));
1514                 break;
1515
1516         case LFUN_MARK_TOGGLE:
1517                 cur.setSelection(false);
1518                 if (cur.mark()) {
1519                         cur.setMark(false);
1520                         cur.message(from_utf8(N_("Mark removed")));
1521                 } else {
1522                         cur.setMark(true);
1523                         cur.message(from_utf8(N_("Mark set")));
1524                 }
1525                 cur.resetAnchor();
1526                 break;
1527
1528         case LFUN_SCREEN_SHOW_CURSOR:
1529                 showCursor();
1530                 break;
1531
1532         case LFUN_SCREEN_RECENTER:
1533                 recenter();
1534                 break;
1535
1536         case LFUN_BIBTEX_DATABASE_ADD: {
1537                 Cursor tmpcur = cur;
1538                 findInset(tmpcur, BIBTEX_CODE, false);
1539                 InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
1540                                                 BIBTEX_CODE);
1541                 if (inset) {
1542                         if (inset->addDatabase(cmd.argument()))
1543                                 buffer_.updateBibfilesCache();
1544                 }
1545                 break;
1546         }
1547
1548         case LFUN_BIBTEX_DATABASE_DEL: {
1549                 Cursor tmpcur = cur;
1550                 findInset(tmpcur, BIBTEX_CODE, false);
1551                 InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
1552                                                 BIBTEX_CODE);
1553                 if (inset) {
1554                         if (inset->delDatabase(cmd.argument()))
1555                                 buffer_.updateBibfilesCache();
1556                 }
1557                 break;
1558         }
1559
1560         case LFUN_STATISTICS: {
1561                 DocIterator from, to;
1562                 if (cur.selection()) {
1563                         from = cur.selectionBegin();
1564                         to = cur.selectionEnd();
1565                 } else {
1566                         from = doc_iterator_begin(&buffer_);
1567                         to = doc_iterator_end(&buffer_);
1568                 }
1569                 int const words = countWords(from, to);
1570                 int const chars = countChars(from, to, false);
1571                 int const chars_blanks = countChars(from, to, true);
1572                 docstring message;
1573                 if (cur.selection())
1574                         message = _("Statistics for the selection:");
1575                 else
1576                         message = _("Statistics for the document:");
1577                 message += "\n\n";
1578                 if (words != 1)
1579                         message += bformat(_("%1$d words"), words);
1580                 else
1581                         message += _("One word");
1582                 message += "\n";
1583                 if (chars_blanks != 1)
1584                         message += bformat(_("%1$d characters (including blanks)"),
1585                                           chars_blanks);
1586                 else
1587                         message += _("One character (including blanks)");
1588                 message += "\n";
1589                 if (chars != 1)
1590                         message += bformat(_("%1$d characters (excluding blanks)"),
1591                                           chars);
1592                 else
1593                         message += _("One character (excluding blanks)");
1594
1595                 Alert::information(_("Statistics"), message);
1596         }
1597                 break;
1598
1599         case LFUN_BUFFER_TOGGLE_COMPRESSION:
1600                 // turn compression on/off
1601                 buffer_.params().compressed = !buffer_.params().compressed;
1602                 break;
1603
1604         case LFUN_LABEL_COPY_AS_REF: {
1605                 // if there is an inset at cursor, try to copy it
1606                 Inset * inset = &cur.inset();
1607                 if (!inset || !inset->asInsetMath())
1608                         inset = cur.nextInset();
1609                 if (inset) {
1610                         FuncRequest tmpcmd = cmd;
1611                         inset->dispatch(cur, tmpcmd);
1612                 }
1613                 if (!cur.result().dispatched())
1614                         // It did not work too; no action needed.
1615                         break;
1616                 cur.clearSelection();
1617                 processUpdateFlags(Update::SinglePar | Update::FitCursor);
1618                 break;
1619         }
1620
1621         case LFUN_SCREEN_UP:
1622         case LFUN_SCREEN_DOWN: {
1623                 Point p = getPos(cur, cur.boundary());
1624                 // This code has been commented out to enable to scroll down a
1625                 // document, even if there are large insets in it (see bug #5465).
1626                 /*if (p.y_ < 0 || p.y_ > height_) {
1627                         // The cursor is off-screen so recenter before proceeding.
1628                         showCursor();
1629                         p = getPos(cur, cur.boundary());
1630                 }*/
1631                 int const scrolled = scroll(cmd.action == LFUN_SCREEN_UP
1632                         ? -height_ : height_);
1633                 if (cmd.action == LFUN_SCREEN_UP && scrolled > -height_)
1634                         p = Point(0, 0);
1635                 if (cmd.action == LFUN_SCREEN_DOWN && scrolled < height_)
1636                         p = Point(width_, height_);
1637                 Cursor old = cur;
1638                 bool const in_texted = cur.inTexted();
1639                 cur.reset();
1640                 buffer_.changed(true);
1641                 d->text_metrics_[&buffer_.text()].editXY(cur, p.x_, p.y_,
1642                         true, cmd.action == LFUN_SCREEN_UP);
1643                 //FIXME: what to do with cur.x_target()?
1644                 bool update = in_texted && cur.bv().checkDepm(cur, old);
1645                 cur.finishUndo();
1646                 if (update)
1647                         processUpdateFlags(Update::Force | Update::FitCursor);
1648                 break;
1649         }
1650
1651         case LFUN_SCROLL:
1652                 lfunScroll(cmd);
1653                 break;
1654
1655         case LFUN_SCREEN_UP_SELECT: {
1656                 cur.selHandle(true);
1657                 if (isTopScreen()) {
1658                         lyx::dispatch(FuncRequest(LFUN_BUFFER_BEGIN_SELECT));
1659                         cur.finishUndo();
1660                         break;
1661                 }
1662                 int y = getPos(cur, cur.boundary()).y_;
1663                 int const ymin = y - height_ + defaultRowHeight();
1664                 while (y > ymin && cur.up())
1665                         y = getPos(cur, cur.boundary()).y_;
1666
1667                 cur.finishUndo();
1668                 processUpdateFlags(Update::SinglePar | Update::FitCursor);
1669                 break;
1670         }
1671
1672         case LFUN_SCREEN_DOWN_SELECT: {
1673                 cur.selHandle(true);
1674                 if (isBottomScreen()) {
1675                         lyx::dispatch(FuncRequest(LFUN_BUFFER_END_SELECT));
1676                         cur.finishUndo();
1677                         break;
1678                 }
1679                 int y = getPos(cur, cur.boundary()).y_;
1680                 int const ymax = y + height_ - defaultRowHeight();
1681                 while (y < ymax && cur.down())
1682                         y = getPos(cur, cur.boundary()).y_;
1683
1684                 cur.finishUndo();
1685                 processUpdateFlags(Update::SinglePar | Update::FitCursor);
1686                 break;
1687         }
1688
1689
1690         // This would be in Buffer class if only Cursor did not
1691         // require a bufferview
1692         case LFUN_INSET_FORALL: {
1693                 docstring const name = from_utf8(cmd.getArg(0));
1694                 string const commandstr = cmd.getLongArg(1);
1695                 FuncRequest const fr = lyxaction.lookupFunc(commandstr);
1696
1697                 // an arbitrary number to limit number of iterations
1698                 const int max_iter = 10000;
1699                 int iterations = 0;
1700                 Cursor & cur = d->cursor_;
1701                 Cursor const savecur = cur;
1702                 cur.reset();
1703                 if (!cur.nextInset())
1704                         cur.forwardInset();
1705                 cur.beginUndoGroup();
1706                 while(cur && iterations < max_iter) {
1707                         Inset * ins = cur.nextInset();
1708                         if (!ins)
1709                                 break;
1710                         docstring insname = ins->name();
1711                         while (!insname.empty()) {
1712                                 if (insname == name || name == from_utf8("*")) {
1713                                         cur.recordUndo();
1714                                         lyx::dispatch(fr);
1715                                         ++iterations;
1716                                         break;
1717                                 }
1718                                 size_t const i = insname.rfind(':');
1719                                 if (i == string::npos)
1720                                         break;
1721                                 insname = insname.substr(0, i);
1722                         }
1723                         cur.forwardInset();
1724                 }
1725                 cur.endUndoGroup();
1726                 cur = savecur;
1727                 cur.fixIfBroken();
1728                 processUpdateFlags(Update::Force);
1729
1730                 if (iterations >= max_iter)
1731                         cur.errorMessage(bformat(_("`inset-forall' interrupted because number of actions is larger than %1$d"), max_iter));
1732                 else
1733                         cur.message(bformat(_("Applied \"%1$s\" to %2$d insets"), from_utf8(commandstr), iterations));
1734                 break;
1735         }
1736
1737
1738         case LFUN_ALL_INSETS_TOGGLE: {
1739                 string action;
1740                 string const name = split(to_utf8(cmd.argument()), action, ' ');
1741                 InsetCode const inset_code = insetCode(name);
1742
1743                 FuncRequest fr(LFUN_INSET_TOGGLE, action);
1744
1745                 Inset & inset = cur.buffer()->inset();
1746                 InsetIterator it  = inset_iterator_begin(inset);
1747                 InsetIterator const end = inset_iterator_end(inset);
1748                 for (; it != end; ++it) {
1749                         if (it->asInsetCollapsable()
1750                             && (inset_code == NO_CODE
1751                             || inset_code == it->lyxCode())) {
1752                                 Cursor tmpcur = cur;
1753                                 tmpcur.pushBackward(*it);
1754                                 it->dispatch(tmpcur, fr);
1755                         }
1756                 }
1757                 processUpdateFlags(Update::Force | Update::FitCursor);
1758                 break;
1759         }
1760
1761         case LFUN_BRANCH_ADD_INSERT: {
1762                 docstring branch_name = from_utf8(cmd.getArg(0));
1763                 if (branch_name.empty())
1764                         if (!Alert::askForText(branch_name, _("Branch name")) ||
1765                                                 branch_name.empty())
1766                                 break;
1767
1768                 DispatchResult drtmp;
1769                 buffer_.dispatch(FuncRequest(LFUN_BRANCH_ADD, branch_name), drtmp);
1770                 if (drtmp.error()) {
1771                         Alert::warning(_("Branch already exists"), drtmp.message());
1772                         break;
1773                 }
1774                 lyx::dispatch(FuncRequest(LFUN_BRANCH_INSERT, branch_name));
1775                 break;
1776         }
1777
1778         case LFUN_KEYMAP_OFF:
1779                 getIntl().keyMapOn(false);
1780                 break;
1781
1782         case LFUN_KEYMAP_PRIMARY:
1783                 getIntl().keyMapPrim();
1784                 break;
1785
1786         case LFUN_KEYMAP_SECONDARY:
1787                 getIntl().keyMapSec();
1788                 break;
1789
1790         case LFUN_KEYMAP_TOGGLE:
1791                 getIntl().toggleKeyMap();
1792                 break;
1793
1794         case LFUN_DIALOG_SHOW_NEW_INSET: {
1795                 string const name = cmd.getArg(0);
1796                 string data = trim(to_utf8(cmd.argument()).substr(name.size()));
1797                 if (decodeInsetParam(name, data, buffer_))
1798                         lyx::dispatch(FuncRequest(LFUN_DIALOG_SHOW, name + " " + data));
1799                 else
1800                         lyxerr << "Inset type '" << name <<
1801                         "' not recognized in LFUN_DIALOG_SHOW_NEW_INSET" <<  endl;
1802                 break;
1803         }
1804
1805         case LFUN_CITATION_INSERT: {
1806                 if (argument.empty()) {
1807                         lyx::dispatch(FuncRequest(LFUN_DIALOG_SHOW_NEW_INSET, "citation"));
1808                         break;
1809                 }
1810                 // we can have one optional argument, delimited by '|'
1811                 // citation-insert <key>|<text_before>
1812                 // this should be enhanced to also support text_after
1813                 // and citation style
1814                 string arg = argument;
1815                 string opt1;
1816                 if (contains(argument, "|")) {
1817                         arg = token(argument, '|', 0);
1818                         opt1 = token(argument, '|', 1);
1819                 }
1820                 InsetCommandParams icp(CITE_CODE);
1821                 icp["key"] = from_utf8(arg);
1822                 if (!opt1.empty())
1823                         icp["before"] = from_utf8(opt1);
1824                 string icstr = InsetCommand::params2string("citation", icp);
1825                 FuncRequest fr(LFUN_INSET_INSERT, icstr);
1826                 lyx::dispatch(fr);
1827                 break;
1828         }
1829
1830         case LFUN_INSET_APPLY: {
1831                 string const name = cmd.getArg(0);
1832                 Inset * inset = editedInset(name);
1833                 if (!inset) {
1834                         FuncRequest fr(LFUN_INSET_INSERT, cmd.argument());
1835                         lyx::dispatch(fr);
1836                         break;
1837                 }
1838                 // put cursor in front of inset.
1839                 if (!setCursorFromInset(inset)) {
1840                         LASSERT(false, break);
1841                 }
1842                 cur.recordUndo();
1843                 FuncRequest fr(LFUN_INSET_MODIFY, cmd.argument());
1844                 inset->dispatch(cur, fr);
1845                 processUpdateFlags(Update::SinglePar | Update::FitCursor);
1846                 break;
1847         }
1848
1849         default:
1850                 dispatched = false;
1851                 break;
1852         }
1853
1854         buffer_.undo().endUndoGroup();
1855         return dispatched;
1856 }
1857
1858
1859 docstring const BufferView::requestSelection()
1860 {
1861         Cursor & cur = d->cursor_;
1862
1863         LYXERR(Debug::SELECTION, "requestSelection: cur.selection: " << cur.selection());
1864         if (!cur.selection()) {
1865                 d->xsel_cache_.set = false;
1866                 return docstring();
1867         }
1868
1869         LYXERR(Debug::SELECTION, "requestSelection: xsel_cache.set: " << d->xsel_cache_.set);
1870         if (!d->xsel_cache_.set ||
1871             cur.top() != d->xsel_cache_.cursor ||
1872             cur.anchor_.top() != d->xsel_cache_.anchor)
1873         {
1874                 d->xsel_cache_.cursor = cur.top();
1875                 d->xsel_cache_.anchor = cur.anchor_.top();
1876                 d->xsel_cache_.set = cur.selection();
1877                 return cur.selectionAsString(false);
1878         }
1879         return docstring();
1880 }
1881
1882
1883 void BufferView::clearSelection()
1884 {
1885         d->cursor_.clearSelection();
1886         // Clear the selection buffer. Otherwise a subsequent
1887         // middle-mouse-button paste would use the selection buffer,
1888         // not the more current external selection.
1889         cap::clearSelection();
1890         d->xsel_cache_.set = false;
1891         // The buffer did not really change, but this causes the
1892         // redraw we need because we cleared the selection above.
1893         buffer_.changed(false);
1894 }
1895
1896
1897 void BufferView::resize(int width, int height)
1898 {
1899         // Update from work area
1900         width_ = width;
1901         height_ = height;
1902
1903         // Clear the paragraph height cache.
1904         d->par_height_.clear();
1905         // Redo the metrics.
1906         updateMetrics();
1907 }
1908
1909
1910 Inset const * BufferView::getCoveringInset(Text const & text,
1911                 int x, int y) const
1912 {
1913         TextMetrics & tm = d->text_metrics_[&text];
1914         Inset * inset = tm.checkInsetHit(x, y);
1915         if (!inset)
1916                 return 0;
1917
1918         if (!inset->descendable(*this))
1919                 // No need to go further down if the inset is not
1920                 // descendable.
1921                 return inset;
1922
1923         size_t cell_number = inset->nargs();
1924         // Check all the inner cell.
1925         for (size_t i = 0; i != cell_number; ++i) {
1926                 Text const * inner_text = inset->getText(i);
1927                 if (inner_text) {
1928                         // Try deeper.
1929                         Inset const * inset_deeper =
1930                                 getCoveringInset(*inner_text, x, y);
1931                         if (inset_deeper)
1932                                 return inset_deeper;
1933                 }
1934         }
1935
1936         return inset;
1937 }
1938
1939
1940 void BufferView::mouseEventDispatch(FuncRequest const & cmd0)
1941 {
1942         //lyxerr << "[ cmd0 " << cmd0 << "]" << endl;
1943
1944         // This is only called for mouse related events including
1945         // LFUN_FILE_OPEN generated by drag-and-drop.
1946         FuncRequest cmd = cmd0;
1947
1948         Cursor old = cursor();
1949         Cursor cur(*this);
1950         cur.push(buffer_.inset());
1951         cur.setSelection(d->cursor_.selection());
1952
1953         // Either the inset under the cursor or the
1954         // surrounding Text will handle this event.
1955
1956         // make sure we stay within the screen...
1957         cmd.y = min(max(cmd.y, -1), height_);
1958
1959         if (cmd.action == LFUN_MOUSE_MOTION && cmd.button() == mouse_button::none) {
1960
1961                 // Get inset under mouse, if there is one.
1962                 Inset const * covering_inset =
1963                         getCoveringInset(buffer_.text(), cmd.x, cmd.y);
1964                 if (covering_inset == d->last_inset_)
1965                         // Same inset, no need to do anything...
1966                         return;
1967
1968                 bool need_redraw = false;
1969                 // const_cast because of setMouseHover().
1970                 Inset * inset = const_cast<Inset *>(covering_inset);
1971                 if (d->last_inset_)
1972                         // Remove the hint on the last hovered inset (if any).
1973                         need_redraw |= d->last_inset_->setMouseHover(false);
1974                 if (inset)
1975                         // Highlighted the newly hovered inset (if any).
1976                         need_redraw |= inset->setMouseHover(true);
1977                 d->last_inset_ = inset;
1978                 if (!need_redraw)
1979                         return;
1980
1981                 LYXERR(Debug::PAINTING, "Mouse hover detected at: ("
1982                         << cmd.x << ", " << cmd.y << ")");
1983
1984                 d->update_strategy_ = DecorationUpdate;
1985
1986                 // This event (moving without mouse click) is not passed further.
1987                 // This should be changed if it is further utilized.
1988                 buffer_.changed(false);
1989                 return;
1990         }
1991
1992         // Build temporary cursor.
1993         Inset * inset = d->text_metrics_[&buffer_.text()].editXY(cur, cmd.x, cmd.y);
1994
1995         // Put anchor at the same position.
1996         cur.resetAnchor();
1997
1998         cur.beginUndoGroup();
1999
2000         // Try to dispatch to an non-editable inset near this position
2001         // via the temp cursor. If the inset wishes to change the real
2002         // cursor it has to do so explicitly by using
2003         //  cur.bv().cursor() = cur;  (or similar)
2004         if (inset)
2005                 inset->dispatch(cur, cmd);
2006
2007         // Now dispatch to the temporary cursor. If the real cursor should
2008         // be modified, the inset's dispatch has to do so explicitly.
2009         if (!inset || !cur.result().dispatched())
2010                 cur.dispatch(cmd);
2011
2012         cur.endUndoGroup();
2013
2014         // Notify left insets
2015         if (cur != old) {
2016                 old.fixIfBroken();
2017                 bool badcursor = notifyCursorLeavesOrEnters(old, cur);
2018                 if (badcursor)
2019                         cursor().fixIfBroken();
2020         }
2021
2022         // Do we have a selection?
2023         theSelection().haveSelection(cursor().selection());
2024
2025         // If the command has been dispatched,
2026         if (cur.result().dispatched() || cur.result().update())
2027                 processUpdateFlags(cur.result().update());
2028 }
2029
2030
2031 void BufferView::lfunScroll(FuncRequest const & cmd)
2032 {
2033         string const scroll_type = cmd.getArg(0);
2034         int const scroll_step =
2035                 (scroll_type == "line") ? d->scrollbarParameters_.single_step
2036                 : (scroll_type == "page") ? d->scrollbarParameters_.page_step : 0;
2037         if (scroll_step == 0)
2038                 return;
2039         string const scroll_quantity = cmd.getArg(1);
2040         if (scroll_quantity == "up")
2041                 scrollUp(scroll_step);
2042         else if (scroll_quantity == "down")
2043                 scrollDown(scroll_step);
2044         else {
2045                 int const scroll_value = convert<int>(scroll_quantity);
2046                 if (scroll_value)
2047                         scroll(scroll_step * scroll_value);
2048         }
2049         buffer_.changed(true);
2050 }
2051
2052
2053 int BufferView::minVisiblePart()
2054 {
2055         return 2 * defaultRowHeight();
2056 }
2057
2058
2059 int BufferView::scroll(int y)
2060 {
2061         if (y > 0)
2062                 return scrollDown(y);
2063         if (y < 0)
2064                 return scrollUp(-y);
2065         return 0;
2066 }
2067
2068
2069 int BufferView::scrollDown(int offset)
2070 {
2071         Text * text = &buffer_.text();
2072         TextMetrics & tm = d->text_metrics_[text];
2073         int const ymax = height_ + offset;
2074         while (true) {
2075                 pair<pit_type, ParagraphMetrics const *> last = tm.last();
2076                 int bottom_pos = last.second->position() + last.second->descent();
2077                 if (lyxrc.scroll_below_document)
2078                         bottom_pos += height_ - minVisiblePart();
2079                 if (last.first + 1 == int(text->paragraphs().size())) {
2080                         if (bottom_pos <= height_)
2081                                 return 0;
2082                         offset = min(offset, bottom_pos - height_);
2083                         break;
2084                 }
2085                 if (bottom_pos > ymax)
2086                         break;
2087                 tm.newParMetricsDown();
2088         }
2089         d->anchor_ypos_ -= offset;
2090         return -offset;
2091 }
2092
2093
2094 int BufferView::scrollUp(int offset)
2095 {
2096         Text * text = &buffer_.text();
2097         TextMetrics & tm = d->text_metrics_[text];
2098         int ymin = - offset;
2099         while (true) {
2100                 pair<pit_type, ParagraphMetrics const *> first = tm.first();
2101                 int top_pos = first.second->position() - first.second->ascent();
2102                 if (first.first == 0) {
2103                         if (top_pos >= 0)
2104                                 return 0;
2105                         offset = min(offset, - top_pos);
2106                         break;
2107                 }
2108                 if (top_pos < ymin)
2109                         break;
2110                 tm.newParMetricsUp();
2111         }
2112         d->anchor_ypos_ += offset;
2113         return offset;
2114 }
2115
2116
2117 void BufferView::setCursorFromRow(int row)
2118 {
2119         int tmpid = -1;
2120         int tmppos = -1;
2121
2122         buffer_.texrow().getIdFromRow(row, tmpid, tmppos);
2123
2124         d->cursor_.reset();
2125         if (tmpid == -1)
2126                 buffer_.text().setCursor(d->cursor_, 0, 0);
2127         else
2128                 buffer_.text().setCursor(d->cursor_, buffer_.getParFromID(tmpid).pit(), tmppos);
2129         recenter();
2130 }
2131
2132
2133 bool BufferView::setCursorFromInset(Inset const * inset)
2134 {
2135         // are we already there?
2136         if (cursor().nextInset() == inset)
2137                 return true;
2138
2139         // Inset is not at cursor position. Find it in the document.
2140         Cursor cur(*this);
2141         cur.reset();
2142         while (cur && cur.nextInset() != inset)
2143                 cur.forwardInset();
2144
2145         if (cur) {
2146                 setCursor(cur);
2147                 return true;
2148         }
2149         return false;
2150 }
2151
2152
2153 void BufferView::gotoLabel(docstring const & label)
2154 {
2155         std::vector<Buffer const *> bufs = buffer().allRelatives();
2156         std::vector<Buffer const *>::iterator it = bufs.begin();
2157         for (; it != bufs.end(); ++it) {
2158                 Buffer const * buf = *it;
2159
2160                 // find label
2161                 Toc & toc = buf->tocBackend().toc("label");
2162                 TocIterator toc_it = toc.begin();
2163                 TocIterator end = toc.end();
2164                 for (; toc_it != end; ++toc_it) {
2165                         if (label == toc_it->str()) {
2166                                 dispatch(toc_it->action());
2167                                 return;
2168                         }
2169                 }
2170         }
2171 }
2172
2173
2174 TextMetrics const & BufferView::textMetrics(Text const * t) const
2175 {
2176         return const_cast<BufferView *>(this)->textMetrics(t);
2177 }
2178
2179
2180 TextMetrics & BufferView::textMetrics(Text const * t)
2181 {
2182         TextMetricsCache::iterator tmc_it  = d->text_metrics_.find(t);
2183         if (tmc_it == d->text_metrics_.end()) {
2184                 tmc_it = d->text_metrics_.insert(
2185                         make_pair(t, TextMetrics(this, const_cast<Text *>(t)))).first;
2186         }
2187         return tmc_it->second;
2188 }
2189
2190
2191 ParagraphMetrics const & BufferView::parMetrics(Text const * t,
2192                 pit_type pit) const
2193 {
2194         return textMetrics(t).parMetrics(pit);
2195 }
2196
2197
2198 int BufferView::workHeight() const
2199 {
2200         return height_;
2201 }
2202
2203
2204 void BufferView::setCursor(DocIterator const & dit)
2205 {
2206         d->cursor_.reset();
2207         size_t const n = dit.depth();
2208         for (size_t i = 0; i < n; ++i)
2209                 dit[i].inset().edit(d->cursor_, true);
2210
2211         d->cursor_.setCursor(dit);
2212         d->cursor_.setSelection(false);
2213 }
2214
2215
2216 bool BufferView::checkDepm(Cursor & cur, Cursor & old)
2217 {
2218         // Would be wrong to delete anything if we have a selection.
2219         if (cur.selection())
2220                 return false;
2221
2222         bool need_anchor_change = false;
2223         bool changed = d->cursor_.text()->deleteEmptyParagraphMechanism(cur, old,
2224                 need_anchor_change);
2225
2226         if (need_anchor_change)
2227                 cur.resetAnchor();
2228
2229         if (!changed)
2230                 return false;
2231
2232         d->cursor_ = cur;
2233
2234         buffer_.updateLabels();
2235         buffer_.changed(true);
2236         return true;
2237 }
2238
2239
2240 bool BufferView::mouseSetCursor(Cursor & cur, bool select)
2241 {
2242         LASSERT(&cur.bv() == this, /**/);
2243
2244         if (!select)
2245                 // this event will clear selection so we save selection for
2246                 // persistent selection
2247                 cap::saveSelection(cursor());
2248
2249         d->cursor_.macroModeClose();
2250
2251         // Has the cursor just left the inset?
2252         bool leftinset = (&d->cursor_.inset() != &cur.inset());
2253         if (leftinset)
2254                 d->cursor_.fixIfBroken();
2255
2256         // FIXME: shift-mouse selection doesn't work well across insets.
2257         bool do_selection = select && &d->cursor_.anchor().inset() == &cur.inset();
2258
2259         // do the dEPM magic if needed
2260         // FIXME: (1) move this to InsetText::notifyCursorLeaves?
2261         // FIXME: (2) if we had a working InsetText::notifyCursorLeaves,
2262         // the leftinset bool would not be necessary (badcursor instead).
2263         bool update = leftinset;
2264         if (!do_selection && d->cursor_.inTexted())
2265                 update |= checkDepm(cur, d->cursor_);
2266
2267         if (!do_selection)
2268                 d->cursor_.resetAnchor();
2269         d->cursor_.setCursor(cur);
2270         d->cursor_.boundary(cur.boundary());
2271         if (do_selection)
2272                 d->cursor_.setSelection();
2273         else
2274                 d->cursor_.clearSelection();
2275
2276         d->cursor_.finishUndo();
2277         d->cursor_.setCurrentFont();
2278         return update;
2279 }
2280
2281
2282 void BufferView::putSelectionAt(DocIterator const & cur,
2283                                 int length, bool backwards)
2284 {
2285         d->cursor_.clearSelection();
2286
2287         setCursor(cur);
2288
2289         if (length) {
2290                 if (backwards) {
2291                         d->cursor_.pos() += length;
2292                         d->cursor_.setSelection(d->cursor_, -length);
2293                 } else
2294                         d->cursor_.setSelection(d->cursor_, length);
2295         }
2296         // Ensure a redraw happens in any case because the new selection could
2297         // possibly be on the same screen as the previous selection.
2298         processUpdateFlags(Update::Force | Update::FitCursor);
2299 }
2300
2301
2302 Cursor & BufferView::cursor()
2303 {
2304         return d->cursor_;
2305 }
2306
2307
2308 Cursor const & BufferView::cursor() const
2309 {
2310         return d->cursor_;
2311 }
2312
2313
2314 pit_type BufferView::anchor_ref() const
2315 {
2316         return d->anchor_pit_;
2317 }
2318
2319
2320 bool BufferView::singleParUpdate()
2321 {
2322         Text & buftext = buffer_.text();
2323         pit_type const bottom_pit = d->cursor_.bottom().pit();
2324         TextMetrics & tm = textMetrics(&buftext);
2325         int old_height = tm.parMetrics(bottom_pit).height();
2326
2327         // make sure inline completion pointer is ok
2328         if (d->inlineCompletionPos_.fixIfBroken())
2329                 d->inlineCompletionPos_ = DocIterator();
2330
2331         // In Single Paragraph mode, rebreak only
2332         // the (main text, not inset!) paragraph containing the cursor.
2333         // (if this paragraph contains insets etc., rebreaking will
2334         // recursively descend)
2335         tm.redoParagraph(bottom_pit);
2336         ParagraphMetrics const & pm = tm.parMetrics(bottom_pit);
2337         if (pm.height() != old_height)
2338                 // Paragraph height has changed so we cannot proceed to
2339                 // the singlePar optimisation.
2340                 return false;
2341
2342         d->update_strategy_ = SingleParUpdate;
2343
2344         LYXERR(Debug::PAINTING, "\ny1: " << pm.position() - pm.ascent()
2345                 << " y2: " << pm.position() + pm.descent()
2346                 << " pit: " << bottom_pit
2347                 << " singlepar: 1");
2348         return true;
2349 }
2350
2351
2352 void BufferView::updateMetrics()
2353 {
2354         if (height_ == 0 || width_ == 0)
2355                 return;
2356
2357         Text & buftext = buffer_.text();
2358         pit_type const npit = int(buftext.paragraphs().size());
2359
2360         // Clear out the position cache in case of full screen redraw,
2361         d->coord_cache_.clear();
2362
2363         // Clear out paragraph metrics to avoid having invalid metrics
2364         // in the cache from paragraphs not relayouted below
2365         // The complete text metrics will be redone.
2366         d->text_metrics_.clear();
2367
2368         TextMetrics & tm = textMetrics(&buftext);
2369
2370         // make sure inline completion pointer is ok
2371         if (d->inlineCompletionPos_.fixIfBroken())
2372                 d->inlineCompletionPos_ = DocIterator();
2373
2374         if (d->anchor_pit_ >= npit)
2375                 // The anchor pit must have been deleted...
2376                 d->anchor_pit_ = npit - 1;
2377
2378         // Rebreak anchor paragraph.
2379         tm.redoParagraph(d->anchor_pit_);
2380         ParagraphMetrics & anchor_pm = tm.par_metrics_[d->anchor_pit_];
2381
2382         // position anchor
2383         if (d->anchor_pit_ == 0) {
2384                 int scrollRange = d->scrollbarParameters_.max - d->scrollbarParameters_.min;
2385
2386                 // Complete buffer visible? Then it's easy.
2387                 if (scrollRange == 0)
2388                         d->anchor_ypos_ = anchor_pm.ascent();
2389
2390                 // FIXME: Some clever handling needed to show
2391                 // the _first_ paragraph up to the top if the cursor is
2392                 // in the first line.
2393         }
2394         anchor_pm.setPosition(d->anchor_ypos_);
2395
2396         LYXERR(Debug::PAINTING, "metrics: "
2397                 << " anchor pit = " << d->anchor_pit_
2398                 << " anchor ypos = " << d->anchor_ypos_);
2399
2400         // Redo paragraphs above anchor if necessary.
2401         int y1 = d->anchor_ypos_ - anchor_pm.ascent();
2402         // We are now just above the anchor paragraph.
2403         pit_type pit1 = d->anchor_pit_ - 1;
2404         for (; pit1 >= 0 && y1 >= 0; --pit1) {
2405                 tm.redoParagraph(pit1);
2406                 ParagraphMetrics & pm = tm.par_metrics_[pit1];
2407                 y1 -= pm.descent();
2408                 // Save the paragraph position in the cache.
2409                 pm.setPosition(y1);
2410                 y1 -= pm.ascent();
2411         }
2412
2413         // Redo paragraphs below the anchor if necessary.
2414         int y2 = d->anchor_ypos_ + anchor_pm.descent();
2415         // We are now just below the anchor paragraph.
2416         pit_type pit2 = d->anchor_pit_ + 1;
2417         for (; pit2 < npit && y2 <= height_; ++pit2) {
2418                 tm.redoParagraph(pit2);
2419                 ParagraphMetrics & pm = tm.par_metrics_[pit2];
2420                 y2 += pm.ascent();
2421                 // Save the paragraph position in the cache.
2422                 pm.setPosition(y2);
2423                 y2 += pm.descent();
2424         }
2425
2426         LYXERR(Debug::PAINTING, "Metrics: "
2427                 << " anchor pit = " << d->anchor_pit_
2428                 << " anchor ypos = " << d->anchor_ypos_
2429                 << " y1 = " << y1
2430                 << " y2 = " << y2
2431                 << " pit1 = " << pit1
2432                 << " pit2 = " << pit2);
2433
2434         d->update_strategy_ = FullScreenUpdate;
2435
2436         if (lyxerr.debugging(Debug::WORKAREA)) {
2437                 LYXERR(Debug::WORKAREA, "BufferView::updateMetrics");
2438                 d->coord_cache_.dump();
2439         }
2440 }
2441
2442
2443 void BufferView::insertLyXFile(FileName const & fname)
2444 {
2445         LASSERT(d->cursor_.inTexted(), /**/);
2446
2447         // Get absolute path of file and add ".lyx"
2448         // to the filename if necessary
2449         FileName filename = fileSearch(string(), fname.absFilename(), "lyx");
2450
2451         docstring const disp_fn = makeDisplayPath(filename.absFilename());
2452         // emit message signal.
2453         message(bformat(_("Inserting document %1$s..."), disp_fn));
2454
2455         docstring res;
2456         Buffer buf("", false);
2457         if (buf.loadLyXFile(filename)) {
2458                 ErrorList & el = buffer_.errorList("Parse");
2459                 // Copy the inserted document error list into the current buffer one.
2460                 el = buf.errorList("Parse");
2461                 buffer_.undo().recordUndo(d->cursor_);
2462                 cap::pasteParagraphList(d->cursor_, buf.paragraphs(),
2463                                              buf.params().documentClassPtr(), el);
2464                 res = _("Document %1$s inserted.");
2465         } else {
2466                 res = _("Could not insert document %1$s");
2467         }
2468
2469         buffer_.changed(true);
2470         // emit message signal.
2471         message(bformat(res, disp_fn));
2472         buffer_.errors("Parse");
2473 }
2474
2475
2476 Point BufferView::coordOffset(DocIterator const & dit, bool boundary) const
2477 {
2478         int x = 0;
2479         int y = 0;
2480         int lastw = 0;
2481
2482         // Addup contribution of nested insets, from inside to outside,
2483         // keeping the outer paragraph for a special handling below
2484         for (size_t i = dit.depth() - 1; i >= 1; --i) {
2485                 CursorSlice const & sl = dit[i];
2486                 int xx = 0;
2487                 int yy = 0;
2488
2489                 // get relative position inside sl.inset()
2490                 sl.inset().cursorPos(*this, sl, boundary && (i + 1 == dit.depth()), xx, yy);
2491
2492                 // Make relative position inside of the edited inset relative to sl.inset()
2493                 x += xx;
2494                 y += yy;
2495
2496                 // In case of an RTL inset, the edited inset will be positioned to the left
2497                 // of xx:yy
2498                 if (sl.text()) {
2499                         bool boundary_i = boundary && i + 1 == dit.depth();
2500                         bool rtl = textMetrics(sl.text()).isRTL(sl, boundary_i);
2501                         if (rtl)
2502                                 x -= lastw;
2503                 }
2504
2505                 // remember width for the case that sl.inset() is positioned in an RTL inset
2506                 if (i && dit[i - 1].text()) {
2507                         // If this Inset is inside a Text Inset, retrieve the Dimension
2508                         // from the containing text instead of using Inset::dimension() which
2509                         // might not be implemented.
2510                         // FIXME (Abdel 23/09/2007): this is a bit messy because of the
2511                         // elimination of Inset::dim_ cache. This coordOffset() method needs
2512                         // to be rewritten in light of the new design.
2513                         Dimension const & dim = parMetrics(dit[i - 1].text(),
2514                                 dit[i - 1].pit()).insetDimension(&sl.inset());
2515                         lastw = dim.wid;
2516                 } else {
2517                         Dimension const dim = sl.inset().dimension(*this);
2518                         lastw = dim.wid;
2519                 }
2520
2521                 //lyxerr << "Cursor::getPos, i: "
2522                 // << i << " x: " << xx << " y: " << y << endl;
2523         }
2524
2525         // Add contribution of initial rows of outermost paragraph
2526         CursorSlice const & sl = dit[0];
2527         TextMetrics const & tm = textMetrics(sl.text());
2528         ParagraphMetrics const & pm = tm.parMetrics(sl.pit());
2529         LASSERT(!pm.rows().empty(), /**/);
2530         y -= pm.rows()[0].ascent();
2531 #if 1
2532         // FIXME: document this mess
2533         size_t rend;
2534         if (sl.pos() > 0 && dit.depth() == 1) {
2535                 int pos = sl.pos();
2536                 if (pos && boundary)
2537                         --pos;
2538 //              lyxerr << "coordOffset: boundary:" << boundary << " depth:" << dit.depth() << " pos:" << pos << " sl.pos:" << sl.pos() << endl;
2539                 rend = pm.pos2row(pos);
2540         } else
2541                 rend = pm.pos2row(sl.pos());
2542 #else
2543         size_t rend = pm.pos2row(sl.pos());
2544 #endif
2545         for (size_t rit = 0; rit != rend; ++rit)
2546                 y += pm.rows()[rit].height();
2547         y += pm.rows()[rend].ascent();
2548
2549         TextMetrics const & bottom_tm = textMetrics(dit.bottom().text());
2550
2551         // Make relative position from the nested inset now bufferview absolute.
2552         int xx = bottom_tm.cursorX(dit.bottom(), boundary && dit.depth() == 1);
2553         x += xx;
2554
2555         // In the RTL case place the nested inset at the left of the cursor in
2556         // the outer paragraph
2557         bool boundary_1 = boundary && 1 == dit.depth();
2558         bool rtl = bottom_tm.isRTL(dit.bottom(), boundary_1);
2559         if (rtl)
2560                 x -= lastw;
2561
2562         return Point(x, y);
2563 }
2564
2565
2566 Point BufferView::getPos(DocIterator const & dit, bool boundary) const
2567 {
2568         if (!paragraphVisible(dit))
2569                 return Point(-1, -1);
2570
2571         CursorSlice const & bot = dit.bottom();
2572         TextMetrics const & tm = textMetrics(bot.text());
2573
2574         Point p = coordOffset(dit, boundary); // offset from outer paragraph
2575         p.y_ += tm.parMetrics(bot.pit()).position();
2576         return p;
2577 }
2578
2579
2580 bool BufferView::paragraphVisible(DocIterator const & dit) const
2581 {
2582         CursorSlice const & bot = dit.bottom();
2583         TextMetrics const & tm = textMetrics(bot.text());
2584
2585         return tm.contains(bot.pit());
2586 }
2587
2588
2589 void BufferView::cursorPosAndHeight(Point & p, int & h) const
2590 {
2591         Cursor const & cur = cursor();
2592         Font const font = cur.getFont();
2593         frontend::FontMetrics const & fm = theFontMetrics(font);
2594         int const asc = fm.maxAscent();
2595         int const des = fm.maxDescent();
2596         h = asc + des;
2597         p = getPos(cur, cur.boundary());
2598         p.y_ -= asc;
2599 }
2600
2601
2602 bool BufferView::cursorInView(Point const & p, int h) const
2603 {
2604         Cursor const & cur = cursor();
2605         // does the cursor touch the screen ?
2606         if (p.y_ + h < 0 || p.y_ >= workHeight() || !paragraphVisible(cur))
2607                 return false;
2608         return true;
2609 }
2610
2611
2612 void BufferView::draw(frontend::Painter & pain)
2613 {
2614         if (height_ == 0 || width_ == 0)
2615                 return;
2616         LYXERR(Debug::PAINTING, "\t\t*** START DRAWING ***");
2617
2618         Text & text = buffer_.text();
2619         TextMetrics const & tm = d->text_metrics_[&text];
2620         int const y = tm.first().second->position();
2621         PainterInfo pi(this, pain);
2622
2623         switch (d->update_strategy_) {
2624
2625         case NoScreenUpdate:
2626                 // If no screen painting is actually needed, only some the different
2627                 // coordinates of insets and paragraphs needs to be updated.
2628                 pi.full_repaint = true;
2629                 pi.pain.setDrawingEnabled(false);
2630                 tm.draw(pi, 0, y);
2631                 break;
2632
2633         case SingleParUpdate:
2634                 pi.full_repaint = false;
2635                 // In general, only the current row of the outermost paragraph
2636                 // will be redrawn. Particular cases where selection spans
2637                 // multiple paragraph are correctly detected in TextMetrics.
2638                 tm.draw(pi, 0, y);
2639                 break;
2640
2641         case DecorationUpdate:
2642                 // FIXME: We should also distinguish DecorationUpdate to avoid text
2643                 // drawing if possible. This is not possible to do easily right now
2644                 // because of the single backing pixmap.
2645
2646         case FullScreenUpdate:
2647                 // The whole screen, including insets, will be refreshed.
2648                 pi.full_repaint = true;
2649
2650                 // Clear background.
2651                 pain.fillRectangle(0, 0, width_, height_,
2652                         pi.backgroundColor(&buffer_.inset()));
2653
2654                 // Draw everything.
2655                 tm.draw(pi, 0, y);
2656
2657                 // and possibly grey out below
2658                 pair<pit_type, ParagraphMetrics const *> lastpm = tm.last();
2659                 int const y2 = lastpm.second->position() + lastpm.second->descent();
2660
2661                 if (y2 < height_) {
2662                         Color color = buffer().isInternal()
2663                                 ? Color_background : Color_bottomarea;
2664                         pain.fillRectangle(0, y2, width_, height_ - y2, color);
2665                 }
2666                 break;
2667         }
2668         LYXERR(Debug::PAINTING, "\n\t\t*** END DRAWING  ***");
2669
2670         // The scrollbar needs an update.
2671         updateScrollbar();
2672
2673         // Normalize anchor for next time
2674         pair<pit_type, ParagraphMetrics const *> firstpm = tm.first();
2675         pair<pit_type, ParagraphMetrics const *> lastpm = tm.last();
2676         for (pit_type pit = firstpm.first; pit <= lastpm.first; ++pit) {
2677                 ParagraphMetrics const & pm = tm.parMetrics(pit);
2678                 if (pm.position() + pm.descent() > 0) {
2679                         d->anchor_pit_ = pit;
2680                         d->anchor_ypos_ = pm.position();
2681                         break;
2682                 }
2683         }
2684         LYXERR(Debug::PAINTING, "Found new anchor pit = " << d->anchor_pit_
2685                 << "  anchor ypos = " << d->anchor_ypos_);
2686 }
2687
2688
2689 void BufferView::message(docstring const & msg)
2690 {
2691         if (d->gui_)
2692                 d->gui_->message(msg);
2693 }
2694
2695
2696 void BufferView::showDialog(string const & name)
2697 {
2698         if (d->gui_)
2699                 d->gui_->showDialog(name, string());
2700 }
2701
2702
2703 void BufferView::showDialog(string const & name,
2704         string const & data, Inset * inset)
2705 {
2706         if (d->gui_)
2707                 d->gui_->showDialog(name, data, inset);
2708 }
2709
2710
2711 void BufferView::updateDialog(string const & name, string const & data)
2712 {
2713         if (d->gui_)
2714                 d->gui_->updateDialog(name, data);
2715 }
2716
2717
2718 void BufferView::setGuiDelegate(frontend::GuiBufferViewDelegate * gui)
2719 {
2720         d->gui_ = gui;
2721 }
2722
2723
2724 // FIXME: Move this out of BufferView again
2725 docstring BufferView::contentsOfPlaintextFile(FileName const & fname)
2726 {
2727         if (!fname.isReadableFile()) {
2728                 docstring const error = from_ascii(strerror(errno));
2729                 docstring const file = makeDisplayPath(fname.absFilename(), 50);
2730                 docstring const text =
2731                   bformat(_("Could not read the specified document\n"
2732                             "%1$s\ndue to the error: %2$s"), file, error);
2733                 Alert::error(_("Could not read file"), text);
2734                 return docstring();
2735         }
2736
2737         if (!fname.isReadableFile()) {
2738                 docstring const file = makeDisplayPath(fname.absFilename(), 50);
2739                 docstring const text =
2740                   bformat(_("%1$s\n is not readable."), file);
2741                 Alert::error(_("Could not open file"), text);
2742                 return docstring();
2743         }
2744
2745         // FIXME UNICODE: We don't know the encoding of the file
2746         docstring file_content = fname.fileContents("UTF-8");
2747         if (file_content.empty()) {
2748                 Alert::error(_("Reading not UTF-8 encoded file"),
2749                              _("The file is not UTF-8 encoded.\n"
2750                                "It will be read as local 8Bit-encoded.\n"
2751                                "If this does not give the correct result\n"
2752                                "then please change the encoding of the file\n"
2753                                "to UTF-8 with a program other than LyX.\n"));
2754                 file_content = fname.fileContents("local8bit");
2755         }
2756
2757         return normalize_c(file_content);
2758 }
2759
2760
2761 void BufferView::insertPlaintextFile(FileName const & f, bool asParagraph)
2762 {
2763         docstring const tmpstr = contentsOfPlaintextFile(f);
2764
2765         if (tmpstr.empty())
2766                 return;
2767
2768         Cursor & cur = cursor();
2769         cap::replaceSelection(cur);
2770         buffer_.undo().recordUndo(cur);
2771         if (asParagraph)
2772                 cur.innerText()->insertStringAsParagraphs(cur, tmpstr, cur.current_font);
2773         else
2774                 cur.innerText()->insertStringAsLines(cur, tmpstr, cur.current_font);
2775
2776         buffer_.changed(true);
2777 }
2778
2779
2780 docstring const & BufferView::inlineCompletion() const
2781 {
2782         return d->inlineCompletion_;
2783 }
2784
2785
2786 size_t const & BufferView::inlineCompletionUniqueChars() const
2787 {
2788         return d->inlineCompletionUniqueChars_;
2789 }
2790
2791
2792 DocIterator const & BufferView::inlineCompletionPos() const
2793 {
2794         return d->inlineCompletionPos_;
2795 }
2796
2797
2798 bool samePar(DocIterator const & a, DocIterator const & b)
2799 {
2800         if (a.empty() && b.empty())
2801                 return true;
2802         if (a.empty() || b.empty())
2803                 return false;
2804         if (a.depth() != b.depth())
2805                 return false;
2806         return &a.innerParagraph() == &b.innerParagraph();
2807 }
2808
2809
2810 void BufferView::setInlineCompletion(Cursor & cur, DocIterator const & pos,
2811         docstring const & completion, size_t uniqueChars)
2812 {
2813         uniqueChars = min(completion.size(), uniqueChars);
2814         bool changed = d->inlineCompletion_ != completion
2815                 || d->inlineCompletionUniqueChars_ != uniqueChars;
2816         bool singlePar = true;
2817         d->inlineCompletion_ = completion;
2818         d->inlineCompletionUniqueChars_ = min(completion.size(), uniqueChars);
2819
2820         //lyxerr << "setInlineCompletion pos=" << pos << " completion=" << completion << " uniqueChars=" << uniqueChars << std::endl;
2821
2822         // at new position?
2823         DocIterator const & old = d->inlineCompletionPos_;
2824         if (old != pos) {
2825                 //lyxerr << "inlineCompletionPos changed" << std::endl;
2826                 // old or pos are in another paragraph?
2827                 if ((!samePar(cur, pos) && !pos.empty())
2828                     || (!samePar(cur, old) && !old.empty())) {
2829                         singlePar = false;
2830                         //lyxerr << "different paragraph" << std::endl;
2831                 }
2832                 d->inlineCompletionPos_ = pos;
2833         }
2834
2835         // set update flags
2836         if (changed) {
2837                 if (singlePar && !(cur.disp_.update() & Update::Force))
2838                         cur.updateFlags(cur.disp_.update() | Update::SinglePar);
2839                 else
2840                         cur.updateFlags(cur.disp_.update() | Update::Force);
2841         }
2842 }
2843
2844 } // namespace lyx