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 "Length.h"
  39 #include "Lexer.h"
  40 #include "LyX.h"
  41 #include "LyXAction.h"
  42 #include "lyxfind.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 "RowPainter.h"
  50 #include "Session.h"
  51 #include "Text.h"
  52 #include "TextClass.h"
  53 #include "TextMetrics.h"
  54 #include "TexRow.h"
  55 #include "TocBackend.h"
  56 #include "WordLangTuple.h"
  57
  58 #include "insets/InsetBibtex.h"
  59 #include "insets/InsetCitation.h"
  60 #include "insets/InsetCommand.h" // ChangeRefs
  61 #include "insets/InsetExternal.h"
  62 #include "insets/InsetGraphics.h"
  63 #include "insets/InsetNote.h"
  64 #include "insets/InsetRef.h"
  65 #include "insets/InsetText.h"
  66
  67 #include "mathed/MathData.h"
  68 #include "mathed/InsetMathNest.h"
  69
  70 #include "frontends/alert.h"
  71 #include "frontends/Application.h"
  72 #include "frontends/Delegates.h"
  73 #include "frontends/FontMetrics.h"
  74 #include "frontends/NullPainter.h"
  75 #include "frontends/Painter.h"
  76 #include "frontends/Selection.h"
  77
  78 #include "support/convert.h"
  79 #include "support/debug.h"
  80 #include "support/ExceptionMessage.h"
  81 #include "support/filetools.h"
  82 #include "support/gettext.h"
  83 #include "support/lassert.h"
  84 #include "support/lstrings.h"
  85 #include "support/lyxlib.h"
  86 #include "support/Package.h"
  87 #include "support/types.h"
  88
  89 #include <cerrno>
  90 #include <fstream>
  91 #include <functional>
  92 #include <iterator>
  93 #include <sstream>
  94 #include <vector>
  95
  96 using namespace std;
  97 using namespace lyx::support;
  98
  99 namespace lyx {
 100
 101 namespace Alert = frontend::Alert;
 102
 103 namespace {
 104
 105 /// Return an inset of this class if it exists at the current cursor position
 106 template <class T>
 107 T * getInsetByCode(Cursor const & cur, InsetCode code)
 108 {
 109         DocIterator it = cur;
 110         Inset * inset = it.nextInset();
 111         if (inset && inset->lyxCode() == code)
 112                 return static_cast<T*>(inset);
 113         return 0;
 114 }
 115
 116
 117 /// Note that comparing contents can only be used for InsetCommand
 118 bool findNextInset(DocIterator & dit, vector<InsetCode> const & codes,
 119         docstring const & contents)
 120 {
 121         DocIterator tmpdit = dit;
 122
 123         while (tmpdit) {
 124                 Inset const * inset = tmpdit.nextInset();
 125                 if (inset) {
 126                         bool const valid_code = std::find(codes.begin(), codes.end(),
 127                                 inset->lyxCode()) != codes.end();
 128                         InsetCommand const * ic = inset->asInsetCommand();
 129                         bool const same_or_no_contents =  contents.empty()
 130                                 || (ic && (ic->getFirstNonOptParam() == contents));
 131
 132                         if (valid_code && same_or_no_contents) {
 133                                 dit = tmpdit;
 134                                 return true;
 135                         }
 136                 }
 137                 tmpdit.forwardInset();
 138         }
 139
 140         return false;
 141 }
 142
 143
 144 /// Looks for next inset with one of the given codes.
 145 /// Note that same_content can only be used for InsetCommand
 146 bool findInset(DocIterator & dit, vector<InsetCode> const & codes,
 147         bool same_content)
 148 {
 149         docstring contents;
 150         DocIterator tmpdit = dit;
 151         tmpdit.forwardInset();
 152         if (!tmpdit)
 153                 return false;
 154
 155         Inset const * inset = tmpdit.nextInset();
 156         if (same_content && inset) {
 157                 InsetCommand const * ic = inset->asInsetCommand();
 158                 if (ic) {
 159                         bool const valid_code = std::find(codes.begin(), codes.end(),
 160                                 ic->lyxCode()) != codes.end();
 161                         if (valid_code)
 162                                 contents = ic->getFirstNonOptParam();
 163                 }
 164         }
 165
 166         if (!findNextInset(tmpdit, codes, contents)) {
 167                 if (dit.depth() != 1 || dit.pit() != 0 || dit.pos() != 0) {
 168                         inset = &tmpdit.bottom().inset();
 169                         tmpdit = doc_iterator_begin(&inset->buffer(), inset);
 170                         if (!findNextInset(tmpdit, codes, contents))
 171                                 return false;
 172                 } else {
 173                         return false;
 174                 }
 175         }
 176
 177         dit = tmpdit;
 178         return true;
 179 }
 180
 181
 182 /// Looks for next inset with the given code
 183 void findInset(DocIterator & dit, InsetCode code, bool same_content)
 184 {
 185         findInset(dit, vector<InsetCode>(1, code), same_content);
 186 }
 187
 188
 189 /// Moves cursor to the next inset with one of the given codes.
 190 void gotoInset(BufferView * bv, vector<InsetCode> const & codes,
 191                bool same_content)
 192 {
 193         Cursor tmpcur = bv->cursor();
 194         if (!findInset(tmpcur, codes, same_content)) {
 195                 bv->cursor().message(_("No more insets"));
 196                 return;
 197         }
 198
 199         tmpcur.clearSelection();
 200         bv->setCursor(tmpcur);
 201         bv->showCursor();
 202 }
 203
 204
 205 /// Moves cursor to the next inset with given code.
 206 void gotoInset(BufferView * bv, InsetCode code, bool same_content)
 207 {
 208         gotoInset(bv, vector<InsetCode>(1, code), same_content);
 209 }
 210
 211
 212 /// A map from a Text to the associated text metrics
 213 typedef map<Text const *, TextMetrics> TextMetricsCache;
 214
 215 enum ScreenUpdateStrategy {
 216         NoScreenUpdate,
 217         SingleParUpdate,
 218         FullScreenUpdate,
 219         DecorationUpdate
 220 };
 221
 222 } // namespace
 223
 224
 225 /////////////////////////////////////////////////////////////////////
 226 //
 227 // BufferView
 228 //
 229 /////////////////////////////////////////////////////////////////////
 230
 231 struct BufferView::Private
 232 {
 233         Private(BufferView & bv) : update_strategy_(FullScreenUpdate),
 234                 update_flags_(Update::Force),
 235                 wh_(0), cursor_(bv),
 236                 anchor_pit_(0), anchor_ypos_(0),
 237                 inlineCompletionUniqueChars_(0),
 238                 last_inset_(0), clickable_inset_(false),
 239                 mouse_position_cache_(),
 240                 bookmark_edit_position_(-1), gui_(0),
 241                 horiz_scroll_offset_(0)
 242         {
 243                 xsel_cache_.set = false;
 244         }
 245
 246         ///
 247         ScrollbarParameters scrollbarParameters_;
 248         ///
 249         ScreenUpdateStrategy update_strategy_;
 250         ///
 251         Update::flags update_flags_;
 252         ///
 253         CoordCache coord_cache_;
 254
 255         /// Estimated average par height for scrollbar.
 256         int wh_;
 257         /// this is used to handle XSelection events in the right manner.
 258         struct {
 259                 CursorSlice cursor;
 260                 CursorSlice anchor;
 261                 bool set;
 262         } xsel_cache_;
 263         ///
 264         Cursor cursor_;
 265         ///
 266         pit_type anchor_pit_;
 267         ///
 268         int anchor_ypos_;
 269         ///
 270         vector<int> par_height_;
 271
 272         ///
 273         DocIterator inlineCompletionPos_;
 274         ///
 275         docstring inlineCompletion_;
 276         ///
 277         size_t inlineCompletionUniqueChars_;
 278
 279         /// keyboard mapping object.
 280         Intl intl_;
 281
 282         /// last visited inset.
 283         /** kept to send setMouseHover(false).
 284           * Not owned, so don't delete.
 285           */
 286         Inset const * last_inset_;
 287         /// are we hovering something that we can click
 288         bool clickable_inset_;
 289
 290         /// position of the mouse at the time of the last mouse move
 291         /// This is used to update the hovering status of inset in
 292         /// cases where the buffer is scrolled, but the mouse didn't move.
 293         Point mouse_position_cache_;
 294
 295         // cache for id of the paragraph which was edited the last time
 296         int bookmark_edit_position_;
 297
 298         mutable TextMetricsCache text_metrics_;
 299
 300         /// Whom to notify.
 301         /** Not owned, so don't delete.
 302           */
 303         frontend::GuiBufferViewDelegate * gui_;
 304
 305         /// Cache for Find Next
 306         FuncRequest search_request_cache_;
 307
 308         ///
 309         map<string, Inset *> edited_insets_;
 310
 311         /// When the row where the cursor lies is scrolled, this
 312         /// contains the scroll offset
 313         int horiz_scroll_offset_;
 314         /// a slice pointing to the start of the row where the cursor
 315         /// is (at last draw time)
 316         CursorSlice current_row_slice_;
 317         /// a slice pointing to the start of the row where cursor was
 318         /// at previous draw event
 319         CursorSlice last_row_slice_;
 320 };
 321
 322
 323 BufferView::BufferView(Buffer & buf)
 324         : width_(0), height_(0), full_screen_(false), buffer_(buf),
 325       d(new Private(*this))
 326 {
 327         d->xsel_cache_.set = false;
 328         d->intl_.initKeyMapper(lyxrc.use_kbmap);
 329
 330         d->cursor_.setBuffer(&buf);
 331         d->cursor_.push(buffer_.inset());
 332         d->cursor_.resetAnchor();
 333         d->cursor_.setCurrentFont();
 334
 335         buffer_.updatePreviews();
 336 }
 337
 338
 339 BufferView::~BufferView()
 340 {
 341         // current buffer is going to be switched-off, save cursor pos
 342         // Ideally, the whole cursor stack should be saved, but session
 343         // currently can only handle bottom (whole document) level pit and pos.
 344         // That is to say, if a cursor is in a nested inset, it will be
 345         // restore to the left of the top level inset.
 346         LastFilePosSection::FilePos fp;
 347         fp.pit = d->cursor_.bottom().pit();
 348         fp.pos = d->cursor_.bottom().pos();
 349         theSession().lastFilePos().save(buffer_.fileName(), fp);
 350
 351         if (d->last_inset_)
 352                 d->last_inset_->setMouseHover(this, false);
 353
 354         delete d;
 355 }
 356
 357
 358 int BufferView::rightMargin() const
 359 {
 360         // The value used to be hardcoded to 10
 361         int const default_margin = zoomedPixels(10);
 362         // The additional test for the case the outliner is opened.
 363         if (!full_screen_ || !lyxrc.full_screen_limit
 364             || width_ < lyxrc.full_screen_width + 2 * default_margin)
 365                 return default_margin;
 366
 367         return (width_ - lyxrc.full_screen_width) / 2;
 368 }
 369
 370
 371 int BufferView::leftMargin() const
 372 {
 373         return rightMargin();
 374 }
 375
 376
 377 int BufferView::inPixels(Length const & len) const
 378 {
 379         Font const font = buffer().params().getFont();
 380         return len.inPixels(workWidth(), theFontMetrics(font).em());
 381 }
 382
 383
 384 int BufferView::zoomedPixels(int pix) const
 385 {
 386         // FIXME: the dpi setting should really depend on the BufferView
 387         // (think different monitors).
 388
 389         // Zoom factor specified by user in percent
 390         double const zoom = lyxrc.currentZoom / 100.0; // [percent]
 391
 392         // DPI setting for monitor relative to 100dpi
 393         double const dpizoom = lyxrc.dpi / 100.0; // [per 100dpi]
 394
 395         return support::iround(pix * zoom * dpizoom);
 396 }
 397
 398
 399 bool BufferView::isTopScreen() const
 400 {
 401         return 0 == d->scrollbarParameters_.min;
 402 }
 403
 404
 405 bool BufferView::isBottomScreen() const
 406 {
 407         return 0 == d->scrollbarParameters_.max;
 408 }
 409
 410
 411 Intl & BufferView::getIntl()
 412 {
 413         return d->intl_;
 414 }
 415
 416
 417 Intl const & BufferView::getIntl() const
 418 {
 419         return d->intl_;
 420 }
 421
 422
 423 CoordCache & BufferView::coordCache()
 424 {
 425         return d->coord_cache_;
 426 }
 427
 428
 429 CoordCache const & BufferView::coordCache() const
 430 {
 431         return d->coord_cache_;
 432 }
 433
 434
 435 Buffer & BufferView::buffer()
 436 {
 437         return buffer_;
 438 }
 439
 440
 441 Buffer const & BufferView::buffer() const
 442 {
 443         return buffer_;
 444 }
 445
 446
 447 bool BufferView::needsFitCursor() const
 448 {
 449         if (cursorStatus(d->cursor_) == CUR_INSIDE) {
 450                 frontend::FontMetrics const & fm =
 451                         theFontMetrics(d->cursor_.getFont().fontInfo());
 452                 int const asc = fm.maxAscent();
 453                 int const des = fm.maxDescent();
 454                 Point const p = getPos(d->cursor_);
 455                 if (p.y_ - asc >= 0 && p.y_ + des < height_)
 456                         return false;
 457         }
 458         return true;
 459 }
 460
 461
 462 namespace {
 463
 464 // this is for debugging only.
 465 string flagsAsString(Update::flags flags)
 466 {
 467         if (flags == Update::None)
 468                 return "None ";
 469         return string((flags & Update::FitCursor) ? "FitCursor " : "")
 470                 + ((flags & Update::Force) ? "Force " : "")
 471                 + ((flags & Update::ForceDraw) ? "ForceDraw " : "")
 472                 + ((flags & Update::SinglePar) ? "SinglePar " : "");
 473 }
 474
 475 }
 476
 477 void BufferView::processUpdateFlags(Update::flags flags)
 478 {
 479         LYXERR(Debug::PAINTING, "BufferView::processUpdateFlags( "
 480                    << flagsAsString(flags) << ")  buffer: " << &buffer_);
 481
 482         // Case when no explicit update is requested.
 483         if (flags == Update::None)
 484                 return;
 485
 486         // SinglePar is ignored for now (this should probably change). We
 487         // set it ourselves below, at the price of always rebreaking the
 488         // paragraph at cursor. This can be expensive for large tables.
 489         flags = flags & ~Update::SinglePar;
 490
 491         // First check whether the metrics and inset positions should be updated
 492         if (flags & Update::Force) {
 493                 // This will update the CoordCache items and replace Force
 494                 // with ForceDraw in flags.
 495                 updateMetrics(flags);
 496         }
 497
 498         // Then make sure that the screen contains the cursor if needed
 499         if (flags & Update::FitCursor) {
 500                 if (needsFitCursor()) {
 501                         scrollToCursor(d->cursor_, false);
 502                         // Metrics have to be recomputed (maybe again)
 503                         updateMetrics(flags);
 504                 }
 505                 flags = flags & ~Update::FitCursor;
 506         }
 507
 508         // Finally detect whether we can only repaint a single paragraph
 509         if (!(flags & Update::ForceDraw)) {
 510                 if (singleParUpdate())
 511                         flags = flags | Update::SinglePar;
 512                 else
 513                         updateMetrics(flags);
 514         }
 515
 516         // Add flags to the the update flags. These will be reset to None
 517         // after the redraw is actually done
 518         d->update_flags_ = d->update_flags_ | flags;
 519         LYXERR(Debug::PAINTING, "Cumulative flags: " << flagsAsString(flags));
 520
 521         // Now compute the update strategy
 522         // Possibly values in flag are None, Decoration, ForceDraw
 523         LATTEST((d->update_flags_ & ~(Update::None | Update::SinglePar
 524                                       | Update::Decoration | Update::ForceDraw)) == 0);
 525
 526         if (d->update_flags_ & Update::ForceDraw)
 527                 d->update_strategy_ = FullScreenUpdate;
 528         else if (d->update_flags_ & Update::Decoration)
 529                 d->update_strategy_ = DecorationUpdate;
 530         else if (d->update_flags_ & Update::SinglePar)
 531                 d->update_strategy_ = SingleParUpdate;
 532         else {
 533                 // no need to redraw anything.
 534                 d->update_strategy_ = NoScreenUpdate;
 535         }
 536
 537         updateHoveredInset();
 538
 539         // Trigger a redraw.
 540         buffer_.changed(false);
 541 }
 542
 543
 544 void BufferView::updateScrollbar()
 545 {
 546         if (height_ == 0 && width_ == 0)
 547                 return;
 548
 549         // We prefer fixed size line scrolling.
 550         d->scrollbarParameters_.single_step = defaultRowHeight();
 551         // We prefer full screen page scrolling.
 552         d->scrollbarParameters_.page_step = height_;
 553
 554         Text & t = buffer_.text();
 555         TextMetrics & tm = d->text_metrics_[&t];
 556
 557         LYXERR(Debug::GUI, " Updating scrollbar: height: "
 558                 << t.paragraphs().size()
 559                 << " curr par: " << d->cursor_.bottom().pit()
 560                 << " default height " << defaultRowHeight());
 561
 562         size_t const parsize = t.paragraphs().size();
 563         if (d->par_height_.size() != parsize) {
 564                 d->par_height_.clear();
 565                 // FIXME: We assume a default paragraph height of 2 rows. This
 566                 // should probably be pondered with the screen width.
 567                 d->par_height_.resize(parsize, defaultRowHeight() * 2);
 568         }
 569
 570         // Look at paragraph heights on-screen
 571         pair<pit_type, ParagraphMetrics const *> first = tm.first();
 572         pair<pit_type, ParagraphMetrics const *> last = tm.last();
 573         for (pit_type pit = first.first; pit <= last.first; ++pit) {
 574                 d->par_height_[pit] = tm.parMetrics(pit).height();
 575                 LYXERR(Debug::SCROLLING, "storing height for pit " << pit << " : "
 576                         << d->par_height_[pit]);
 577         }
 578
 579         int top_pos = first.second->position() - first.second->ascent();
 580         int bottom_pos = last.second->position() + last.second->descent();
 581         bool first_visible = first.first == 0 && top_pos >= 0;
 582         bool last_visible = last.first + 1 == int(parsize) && bottom_pos <= height_;
 583         if (first_visible && last_visible) {
 584                 d->scrollbarParameters_.min = 0;
 585                 d->scrollbarParameters_.max = 0;
 586                 return;
 587         }
 588
 589         d->scrollbarParameters_.min = top_pos;
 590         for (size_t i = 0; i != size_t(first.first); ++i)
 591                 d->scrollbarParameters_.min -= d->par_height_[i];
 592         d->scrollbarParameters_.max = bottom_pos;
 593         for (size_t i = last.first + 1; i != parsize; ++i)
 594                 d->scrollbarParameters_.max += d->par_height_[i];
 595
 596         // The reference is the top position so we remove one page.
 597         if (lyxrc.scroll_below_document)
 598                 d->scrollbarParameters_.max -= minVisiblePart();
 599         else
 600                 d->scrollbarParameters_.max -= d->scrollbarParameters_.page_step;
 601
 602         // 0 must be inside the range as it denotes the current position
 603         if (d->scrollbarParameters_.max < 0)
 604                 d->scrollbarParameters_.max = 0;
 605         if (d->scrollbarParameters_.min > 0)
 606                 d->scrollbarParameters_.min = 0;
 607 }
 608
 609
 610 ScrollbarParameters const & BufferView::scrollbarParameters() const
 611 {
 612         return d->scrollbarParameters_;
 613 }
 614
 615
 616 docstring BufferView::toolTip(int x, int y) const
 617 {
 618         // Get inset under mouse, if there is one.
 619         Inset const * covering_inset = getCoveringInset(buffer_.text(), x, y);
 620         if (!covering_inset)
 621                 // No inset, no tooltip...
 622                 return docstring();
 623         return covering_inset->toolTip(*this, x, y);
 624 }
 625
 626
 627 string BufferView::contextMenu(int x, int y) const
 628 {
 629         //If there is a selection, return the containing inset menu
 630         if (d->cursor_.selection())
 631                 return d->cursor_.inset().contextMenu(*this, x, y);
 632
 633         // Get inset under mouse, if there is one.
 634         Inset const * covering_inset = getCoveringInset(buffer_.text(), x, y);
 635         if (covering_inset)
 636                 return covering_inset->contextMenu(*this, x, y);
 637
 638         return buffer_.inset().contextMenu(*this, x, y);
 639 }
 640
 641
 642
 643 void BufferView::scrollDocView(int const value, bool update)
 644 {
 645         // The scrollbar values are relative to the top of the screen, therefore the
 646         // offset is equal to the target value.
 647
 648         // No scrolling at all? No need to redraw anything
 649         if (value == 0)
 650                 return;
 651
 652         // If the offset is less than 2 screen height, prefer to scroll instead.
 653         if (abs(value) <= 2 * height_) {
 654                 d->anchor_ypos_ -= value;
 655                 processUpdateFlags(Update::Force);
 656                 return;
 657         }
 658
 659         // cut off at the top
 660         if (value <= d->scrollbarParameters_.min) {
 661                 DocIterator dit = doc_iterator_begin(&buffer_);
 662                 showCursor(dit, false, update);
 663                 LYXERR(Debug::SCROLLING, "scroll to top");
 664                 return;
 665         }
 666
 667         // cut off at the bottom
 668         if (value >= d->scrollbarParameters_.max) {
 669                 DocIterator dit = doc_iterator_end(&buffer_);
 670                 dit.backwardPos();
 671                 showCursor(dit, false, update);
 672                 LYXERR(Debug::SCROLLING, "scroll to bottom");
 673                 return;
 674         }
 675
 676         // find paragraph at target position
 677         int par_pos = d->scrollbarParameters_.min;
 678         pit_type i = 0;
 679         for (; i != int(d->par_height_.size()); ++i) {
 680                 par_pos += d->par_height_[i];
 681                 if (par_pos >= value)
 682                         break;
 683         }
 684
 685         if (par_pos < value) {
 686                 // It seems we didn't find the correct pit so stay on the safe side and
 687                 // scroll to bottom.
 688                 LYXERR0("scrolling position not found!");
 689                 scrollDocView(d->scrollbarParameters_.max, update);
 690                 return;
 691         }
 692
 693         DocIterator dit = doc_iterator_begin(&buffer_);
 694         dit.pit() = i;
 695         LYXERR(Debug::SCROLLING, "value = " << value << " -> scroll to pit " << i);
 696         showCursor(dit, false, update);
 697 }
 698
 699
 700 // FIXME: this method is not working well.
 701 void BufferView::setCursorFromScrollbar()
 702 {
 703         TextMetrics & tm = d->text_metrics_[&buffer_.text()];
 704
 705         int const height = 2 * defaultRowHeight();
 706         int const first = height;
 707         int const last = height_ - height;
 708         int newy = 0;
 709         Cursor const & oldcur = d->cursor_;
 710
 711         switch (cursorStatus(oldcur)) {
 712         case CUR_ABOVE:
 713                 newy = first;
 714                 break;
 715         case CUR_BELOW:
 716                 newy = last;
 717                 break;
 718         case CUR_INSIDE:
 719                 int const y = getPos(oldcur).y_;
 720                 newy = min(last, max(y, first));
 721                 if (y == newy)
 722                         return;
 723         }
 724         // We reset the cursor because cursorStatus() does not
 725         // work when the cursor is within mathed.
 726         Cursor cur(*this);
 727         cur.reset();
 728         tm.setCursorFromCoordinates(cur, 0, newy);
 729
 730         // update the bufferview cursor and notify insets
 731         // FIXME: Care about the d->cursor_ flags to redraw if needed
 732         Cursor old = d->cursor_;
 733         mouseSetCursor(cur);
 734         // the DEPM call in mouseSetCursor() might have destroyed the
 735         // paragraph the cursor is in.
 736         bool badcursor = old.fixIfBroken();
 737         badcursor |= notifyCursorLeavesOrEnters(old, d->cursor_);
 738         if (badcursor)
 739                 d->cursor_.fixIfBroken();
 740 }
 741
 742
 743 Change const BufferView::getCurrentChange() const
 744 {
 745         if (!d->cursor_.selection())
 746                 return Change(Change::UNCHANGED);
 747
 748         DocIterator dit = d->cursor_.selectionBegin();
 749         // The selected content might have been changed (see #7685)
 750         dit = dit.getInnerText();
 751         return dit.paragraph().lookupChange(dit.pos());
 752 }
 753
 754
 755 // this could be used elsewhere as well?
 756 // FIXME: This does not work within mathed!
 757 CursorStatus BufferView::cursorStatus(DocIterator const & dit) const
 758 {
 759         Point const p = getPos(dit);
 760         if (p.y_ < 0)
 761                 return CUR_ABOVE;
 762         if (p.y_ > workHeight())
 763                 return CUR_BELOW;
 764         return CUR_INSIDE;
 765 }
 766
 767
 768 void BufferView::bookmarkEditPosition()
 769 {
 770         // Don't eat cpu time for each keystroke
 771         if (d->cursor_.paragraph().id() == d->bookmark_edit_position_)
 772                 return;
 773         saveBookmark(0);
 774         d->bookmark_edit_position_ = d->cursor_.paragraph().id();
 775 }
 776
 777
 778 void BufferView::saveBookmark(unsigned int idx)
 779 {
 780         // tentatively save bookmark, id and pos will be used to
 781         // acturately locate a bookmark in a 'live' lyx session.
 782         // pit and pos will be updated with bottom level pit/pos
 783         // when lyx exits.
 784         if (!buffer_.isInternal()) {
 785                 theSession().bookmarks().save(
 786                         buffer_.fileName(),
 787                         d->cursor_.bottom().pit(),
 788                         d->cursor_.bottom().pos(),
 789                         d->cursor_.paragraph().id(),
 790                         d->cursor_.pos(),
 791                         idx
 792                         );
 793                 if (idx)
 794                         // emit message signal.
 795                         message(_("Save bookmark"));
 796         }
 797 }
 798
 799
 800 bool BufferView::moveToPosition(pit_type bottom_pit, pos_type bottom_pos,
 801         int top_id, pos_type top_pos)
 802 {
 803         bool success = false;
 804         DocIterator dit;
 805
 806         d->cursor_.clearSelection();
 807
 808         // if a valid par_id is given, try it first
 809         // This is the case for a 'live' bookmark when unique paragraph ID
 810         // is used to track bookmarks.
 811         if (top_id > 0) {
 812                 dit = buffer_.getParFromID(top_id);
 813                 if (!dit.atEnd()) {
 814                         dit.pos() = min(dit.paragraph().size(), top_pos);
 815                         // Some slices of the iterator may not be
 816                         // reachable (e.g. closed collapsible inset)
 817                         // so the dociterator may need to be
 818                         // shortened. Otherwise, setCursor may crash
 819                         // lyx when the cursor can not be set to these
 820                         // insets.
 821                         size_t const n = dit.depth();
 822                         for (size_t i = 0; i < n; ++i)
 823                                 if (!dit[i].inset().editable()) {
 824                                         dit.resize(i);
 825                                         break;
 826                                 }
 827                         success = true;
 828                 }
 829         }
 830
 831         // if top_id == 0, or searching through top_id failed
 832         // This is the case for a 'restored' bookmark when only bottom
 833         // (document level) pit was saved. Because of this, bookmark
 834         // restoration is inaccurate. If a bookmark was within an inset,
 835         // it will be restored to the left of the outmost inset that contains
 836         // the bookmark.
 837         if (bottom_pit < int(buffer_.paragraphs().size())) {
 838                 dit = doc_iterator_begin(&buffer_);
 839
 840                 dit.pit() = bottom_pit;
 841                 dit.pos() = min(bottom_pos, dit.paragraph().size());
 842                 success = true;
 843         }
 844
 845         if (success) {
 846                 // Note: only bottom (document) level pit is set.
 847                 setCursor(dit);
 848                 // set the current font.
 849                 d->cursor_.setCurrentFont();
 850                 // Do not forget to reset the anchor (see #9912)
 851                 d->cursor_.resetAnchor();
 852                 processUpdateFlags(Update::FitCursor);
 853         }
 854
 855         return success;
 856 }
 857
 858
 859 void BufferView::translateAndInsert(char_type c, Text * t, Cursor & cur)
 860 {
 861         if (d->cursor_.real_current_font.isRightToLeft()) {
 862                 if (d->intl_.keymap == Intl::PRIMARY)
 863                         d->intl_.keyMapSec();
 864         } else {
 865                 if (d->intl_.keymap == Intl::SECONDARY)
 866                         d->intl_.keyMapPrim();
 867         }
 868
 869         d->intl_.getTransManager().translateAndInsert(c, t, cur);
 870 }
 871
 872
 873 int BufferView::workWidth() const
 874 {
 875         return width_;
 876 }
 877
 878
 879 void BufferView::recenter()
 880 {
 881         showCursor(d->cursor_, true, true);
 882 }
 883
 884
 885 void BufferView::showCursor()
 886 {
 887         showCursor(d->cursor_, false, true);
 888 }
 889
 890
 891 void BufferView::showCursor(DocIterator const & dit,
 892         bool recenter, bool update)
 893 {
 894         if (scrollToCursor(dit, recenter) && update)
 895                 processUpdateFlags(Update::Force);
 896 }
 897
 898
 899 void BufferView::scrollToCursor()
 900 {
 901         if (scrollToCursor(d->cursor_, false))
 902                 processUpdateFlags(Update::Force);
 903 }
 904
 905
 906 bool BufferView::scrollToCursor(DocIterator const & dit, bool const recenter)
 907 {
 908         // We are not properly started yet, delay until resizing is
 909         // done.
 910         if (height_ == 0)
 911                 return false;
 912
 913         LYXERR(Debug::SCROLLING, "recentering!");
 914
 915         CursorSlice const & bot = dit.bottom();
 916         TextMetrics & tm = d->text_metrics_[bot.text()];
 917
 918         pos_type const max_pit = pos_type(bot.text()->paragraphs().size() - 1);
 919         int bot_pit = bot.pit();
 920         if (bot_pit > max_pit) {
 921                 // FIXME: Why does this happen?
 922                 LYXERR0("bottom pit is greater that max pit: "
 923                         << bot_pit << " > " << max_pit);
 924                 bot_pit = max_pit;
 925         }
 926
 927         if (bot_pit == tm.first().first - 1)
 928                 tm.newParMetricsUp();
 929         else if (bot_pit == tm.last().first + 1)
 930                 tm.newParMetricsDown();
 931
 932         if (tm.contains(bot_pit)) {
 933                 ParagraphMetrics const & pm = tm.parMetrics(bot_pit);
 934                 LBUFERR(!pm.rows().empty());
 935                 // FIXME: smooth scrolling doesn't work in mathed.
 936                 CursorSlice const & cs = dit.innerTextSlice();
 937                 int offset = coordOffset(dit).y_;
 938                 int ypos = pm.position() + offset;
 939                 Dimension const & row_dim =
 940                         pm.getRow(cs.pos(), dit.boundary()).dimension();
 941                 int scrolled = 0;
 942                 if (recenter)
 943                         scrolled = scroll(ypos - height_/2);
 944
 945                 // We try to visualize the whole row, if the row height is larger than
 946                 // the screen height, we scroll to a heuristic value of height_ / 4.
 947                 // FIXME: This heuristic value should be replaced by a recursive search
 948                 // for a row in the inset that can be visualized completely.
 949                 else if (row_dim.height() > height_) {
 950                         if (ypos < defaultRowHeight())
 951                                 scrolled = scroll(ypos - height_ / 4);
 952                         else if (ypos > height_ - defaultRowHeight())
 953                                 scrolled = scroll(ypos - 3 * height_ / 4);
 954                 }
 955
 956                 // If the top part of the row falls of the screen, we scroll
 957                 // up to align the top of the row with the top of the screen.
 958                 else if (ypos - row_dim.ascent() < 0 && ypos < height_) {
 959                         int ynew = row_dim.ascent();
 960                         scrolled = scrollUp(ynew - ypos);
 961                 }
 962
 963                 // If the bottom of the row falls of the screen, we scroll down.
 964                 else if (ypos + row_dim.descent() > height_ && ypos > 0) {
 965                         int ynew = height_ - row_dim.descent();
 966                         scrolled = scrollDown(ypos - ynew);
 967                 }
 968
 969                 // else, nothing to do, the cursor is already visible so we just return.
 970                 return scrolled != 0;
 971         }
 972
 973         // fix inline completion position
 974         if (d->inlineCompletionPos_.fixIfBroken())
 975                 d->inlineCompletionPos_ = DocIterator();
 976
 977         tm.redoParagraph(bot_pit);
 978         ParagraphMetrics const & pm = tm.parMetrics(bot_pit);
 979         int offset = coordOffset(dit).y_;
 980
 981         d->anchor_pit_ = bot_pit;
 982         CursorSlice const & cs = dit.innerTextSlice();
 983         Dimension const & row_dim =
 984                 pm.getRow(cs.pos(), dit.boundary()).dimension();
 985
 986         if (recenter)
 987                 d->anchor_ypos_ = height_/2;
 988         else if (d->anchor_pit_ == 0)
 989                 d->anchor_ypos_ = offset + pm.ascent();
 990         else if (d->anchor_pit_ == max_pit)
 991                 d->anchor_ypos_ = height_ - offset - row_dim.descent();
 992         else if (offset > height_)
 993                 d->anchor_ypos_ = height_ - offset - defaultRowHeight();
 994         else
 995                 d->anchor_ypos_ = defaultRowHeight() * 2;
 996
 997         return true;
 998 }
 999
1000
1001 void BufferView::makeDocumentClass()
1002 {
1003         DocumentClassConstPtr olddc = buffer_.params().documentClassPtr();
1004         buffer_.params().makeDocumentClass();
1005         updateDocumentClass(olddc);
1006 }
1007
1008
1009 void BufferView::updateDocumentClass(DocumentClassConstPtr olddc)
1010 {
1011         message(_("Converting document to new document class..."));
1012
1013         StableDocIterator backcur(d->cursor_);
1014         ErrorList & el = buffer_.errorList("Class Switch");
1015         cap::switchBetweenClasses(
1016                         olddc, buffer_.params().documentClassPtr(),
1017                         static_cast<InsetText &>(buffer_.inset()), el);
1018
1019         setCursor(backcur.asDocIterator(&buffer_));
1020
1021         buffer_.errors("Class Switch");
1022 }
1023
1024
1025 /** Return the change status at cursor position, taking into account the
1026  * status at each level of the document iterator (a table in a deleted
1027  * footnote is deleted).
1028  * When \param outer is true, the top slice is not looked at.
1029  */
1030 static Change::Type lookupChangeType(DocIterator const & dit, bool outer = false)
1031 {
1032         size_t const depth = dit.depth() - (outer ? 1 : 0);
1033
1034         for (size_t i = 0 ; i < depth ; ++i) {
1035                 CursorSlice const & slice = dit[i];
1036                 if (!slice.inset().inMathed()
1037                     && slice.pos() < slice.paragraph().size()) {
1038                         Change::Type const ch = slice.paragraph().lookupChange(slice.pos()).type;
1039                         if (ch != Change::UNCHANGED)
1040                                 return ch;
1041                 }
1042         }
1043         return Change::UNCHANGED;
1044 }
1045
1046
1047 bool BufferView::getStatus(FuncRequest const & cmd, FuncStatus & flag)
1048 {
1049         FuncCode const act = cmd.action();
1050
1051         // Can we use a readonly buffer?
1052         if (buffer_.isReadonly()
1053             && !lyxaction.funcHasFlag(act, LyXAction::ReadOnly)
1054             && !lyxaction.funcHasFlag(act, LyXAction::NoBuffer)) {
1055                 if (buffer_.hasReadonlyFlag())
1056                         flag.message(from_utf8(N_("Document is read-only")));
1057                 else
1058                         flag.message(from_utf8(N_("Document has been modified externally")));
1059                 flag.setEnabled(false);
1060                 return true;
1061         }
1062
1063         // Are we in a DELETED change-tracking region?
1064         if (lookupChangeType(d->cursor_, true) == Change::DELETED
1065             && !lyxaction.funcHasFlag(act, LyXAction::ReadOnly)
1066             && !lyxaction.funcHasFlag(act, LyXAction::NoBuffer)) {
1067                 flag.message(from_utf8(N_("This portion of the document is deleted.")));
1068                 flag.setEnabled(false);
1069                 return true;
1070         }
1071
1072         Cursor & cur = d->cursor_;
1073
1074         if (cur.getStatus(cmd, flag))
1075                 return true;
1076
1077         switch (act) {
1078
1079         // FIXME: This is a bit problematic because we don't check if this is
1080         // a document BufferView or not for these LFUNs. We probably have to
1081         // dispatch both to currentBufferView() and, if that fails,
1082         // to documentBufferView(); same as we do now for current Buffer and
1083         // document Buffer. Ideally those LFUN should go to Buffer as they
1084         // operate on the full Buffer and the cursor is only needed either for
1085         // an Undo record or to restore a cursor position. But we don't know
1086         // how to do that inside Buffer of course.
1087         case LFUN_BUFFER_PARAMS_APPLY:
1088         case LFUN_LAYOUT_MODULES_CLEAR:
1089         case LFUN_LAYOUT_MODULE_ADD:
1090         case LFUN_LAYOUT_RELOAD:
1091         case LFUN_TEXTCLASS_APPLY:
1092         case LFUN_TEXTCLASS_LOAD:
1093                 flag.setEnabled(!buffer_.isReadonly());
1094                 break;
1095
1096         case LFUN_UNDO:
1097                 // We do not use the LyXAction flag for readonly because Undo sets the
1098                 // buffer clean/dirty status by itself.
1099                 flag.setEnabled(!buffer_.isReadonly() && buffer_.undo().hasUndoStack());
1100                 break;
1101         case LFUN_REDO:
1102                 // We do not use the LyXAction flag for readonly because Redo sets the
1103                 // buffer clean/dirty status by itself.
1104                 flag.setEnabled(!buffer_.isReadonly() && buffer_.undo().hasRedoStack());
1105                 break;
1106         case LFUN_FILE_INSERT_PLAINTEXT_PARA:
1107         case LFUN_FILE_INSERT_PLAINTEXT: {
1108                 docstring const fname = cmd.argument();
1109                 if (!FileName::isAbsolute(to_utf8(fname))) {
1110                         flag.message(_("Absolute filename expected."));
1111                         return false;
1112                 }
1113                 flag.setEnabled(cur.inTexted());
1114                 break;
1115         }
1116         case LFUN_FILE_INSERT:
1117         case LFUN_BOOKMARK_SAVE:
1118                 // FIXME: Actually, these LFUNS should be moved to Text
1119                 flag.setEnabled(cur.inTexted());
1120                 break;
1121
1122         case LFUN_FONT_STATE:
1123         case LFUN_LABEL_INSERT:
1124         case LFUN_INFO_INSERT:
1125         case LFUN_PARAGRAPH_GOTO:
1126         case LFUN_NOTE_NEXT:
1127         case LFUN_REFERENCE_NEXT:
1128         case LFUN_WORD_FIND:
1129         case LFUN_WORD_FIND_FORWARD:
1130         case LFUN_WORD_FIND_BACKWARD:
1131         case LFUN_WORD_REPLACE:
1132         case LFUN_MARK_OFF:
1133         case LFUN_MARK_ON:
1134         case LFUN_MARK_TOGGLE:
1135         case LFUN_SCREEN_RECENTER:
1136         case LFUN_SCREEN_SHOW_CURSOR:
1137         case LFUN_BIBTEX_DATABASE_ADD:
1138         case LFUN_BIBTEX_DATABASE_DEL:
1139         case LFUN_STATISTICS:
1140         case LFUN_KEYMAP_OFF:
1141         case LFUN_KEYMAP_PRIMARY:
1142         case LFUN_KEYMAP_SECONDARY:
1143         case LFUN_KEYMAP_TOGGLE:
1144         case LFUN_INSET_SELECT_ALL:
1145                 flag.setEnabled(true);
1146                 break;
1147
1148         case LFUN_GRAPHICS_UNIFY:
1149                 flag.setEnabled(cur.selection());
1150                 break;
1151
1152         case LFUN_WORD_FINDADV: {
1153                 FindAndReplaceOptions opt;
1154                 istringstream iss(to_utf8(cmd.argument()));
1155                 iss >> opt;
1156                 flag.setEnabled(opt.repl_buf_name.empty()
1157                                 || !buffer_.isReadonly());
1158                 break;
1159         }
1160
1161         case LFUN_LABEL_GOTO:
1162                 flag.setEnabled(!cmd.argument().empty()
1163                     || getInsetByCode<InsetRef>(cur, REF_CODE));
1164                 break;
1165
1166         case LFUN_CHANGES_MERGE:
1167         case LFUN_CHANGE_NEXT:
1168         case LFUN_CHANGE_PREVIOUS:
1169         case LFUN_ALL_CHANGES_ACCEPT:
1170         case LFUN_ALL_CHANGES_REJECT:
1171                 flag.setEnabled(buffer_.areChangesPresent());
1172                 break;
1173
1174         case LFUN_SCREEN_UP:
1175         case LFUN_SCREEN_DOWN:
1176         case LFUN_SCROLL:
1177         case LFUN_SCREEN_UP_SELECT:
1178         case LFUN_SCREEN_DOWN_SELECT:
1179         case LFUN_INSET_FORALL:
1180                 flag.setEnabled(true);
1181                 break;
1182
1183         case LFUN_LAYOUT_TABULAR:
1184                 flag.setEnabled(cur.innerInsetOfType(TABULAR_CODE));
1185                 break;
1186
1187         case LFUN_LAYOUT:
1188                 flag.setEnabled(!cur.inset().forcePlainLayout(cur.idx()));
1189                 break;
1190
1191         case LFUN_LAYOUT_PARAGRAPH:
1192                 flag.setEnabled(cur.inset().allowParagraphCustomization(cur.idx()));
1193                 break;
1194
1195         case LFUN_BRANCH_ADD_INSERT:
1196                 flag.setEnabled(!(cur.inTexted() && cur.paragraph().isPassThru()));
1197                 break;
1198
1199         case LFUN_DIALOG_SHOW_NEW_INSET:
1200                 // FIXME: this is wrong, but I do not understand the
1201                 // intent (JMarc)
1202                 if (cur.inset().lyxCode() == CAPTION_CODE)
1203                         return cur.inset().getStatus(cur, cmd, flag);
1204                 // FIXME we should consider passthru paragraphs too.
1205                 flag.setEnabled(!(cur.inTexted() && cur.paragraph().isPassThru()));
1206                 break;
1207
1208         case LFUN_CITATION_INSERT: {
1209                 FuncRequest fr(LFUN_INSET_INSERT, "citation");
1210                 // FIXME: This could turn in a recursive hell.
1211                 // Shouldn't we use Buffer::getStatus() instead?
1212                 flag.setEnabled(lyx::getStatus(fr).enabled());
1213                 break;
1214         }
1215         case LFUN_INSET_APPLY: {
1216                 string const name = cmd.getArg(0);
1217                 Inset * inset = editedInset(name);
1218                 if (inset) {
1219                         FuncRequest fr(LFUN_INSET_MODIFY, cmd.argument());
1220                         if (!inset->getStatus(cur, fr, flag)) {
1221                                 // Every inset is supposed to handle this
1222                                 LASSERT(false, break);
1223                         }
1224                 } else {
1225                         FuncRequest fr(LFUN_INSET_INSERT, cmd.argument());
1226                         flag = lyx::getStatus(fr);
1227                 }
1228                 break;
1229         }
1230
1231         default:
1232                 return false;
1233         }
1234
1235         return true;
1236 }
1237
1238
1239 Inset * BufferView::editedInset(string const & name) const
1240 {
1241         map<string, Inset *>::const_iterator it = d->edited_insets_.find(name);
1242         return it == d->edited_insets_.end() ? 0 : it->second;
1243 }
1244
1245
1246 void BufferView::editInset(string const & name, Inset * inset)
1247 {
1248         d->edited_insets_[name] = inset;
1249 }
1250
1251
1252 void BufferView::dispatch(FuncRequest const & cmd, DispatchResult & dr)
1253 {
1254         LYXERR(Debug::ACTION, "BufferView::dispatch: cmd: " << cmd);
1255
1256         string const argument = to_utf8(cmd.argument());
1257         Cursor & cur = d->cursor_;
1258         Cursor old = cur;
1259
1260         // Don't dispatch function that does not apply to internal buffers.
1261         if (buffer_.isInternal()
1262             && lyxaction.funcHasFlag(cmd.action(), LyXAction::NoInternal))
1263                 return;
1264
1265         // We'll set this back to false if need be.
1266         bool dispatched = true;
1267         buffer_.undo().beginUndoGroup();
1268
1269         FuncCode const act = cmd.action();
1270         switch (act) {
1271
1272         case LFUN_BUFFER_PARAMS_APPLY: {
1273                 DocumentClassConstPtr olddc = buffer_.params().documentClassPtr();
1274                 cur.recordUndoBufferParams();
1275                 istringstream ss(to_utf8(cmd.argument()));
1276                 Lexer lex;
1277                 lex.setStream(ss);
1278                 int const unknown_tokens = buffer_.readHeader(lex);
1279                 if (unknown_tokens != 0) {
1280                         LYXERR0("Warning in LFUN_BUFFER_PARAMS_APPLY!\n"
1281                                                 << unknown_tokens << " unknown token"
1282                                                 << (unknown_tokens == 1 ? "" : "s"));
1283                 }
1284                 updateDocumentClass(olddc);
1285
1286                 // We are most certainly here because of a change in the document
1287                 // It is then better to make sure that all dialogs are in sync with
1288                 // current document settings.
1289                 dr.screenUpdate(Update::Force | Update::FitCursor);
1290                 dr.forceBufferUpdate();
1291                 break;
1292         }
1293
1294         case LFUN_LAYOUT_MODULES_CLEAR: {
1295                 // FIXME: this modifies the document in cap::switchBetweenClasses
1296                 //  without calling recordUndo. Fix this before using
1297                 //  recordUndoBufferParams().
1298                 cur.recordUndoFullBuffer();
1299                 buffer_.params().clearLayoutModules();
1300                 makeDocumentClass();
1301                 dr.screenUpdate(Update::Force);
1302                 dr.forceBufferUpdate();
1303                 break;
1304         }
1305
1306         case LFUN_LAYOUT_MODULE_ADD: {
1307                 BufferParams const & params = buffer_.params();
1308                 if (!params.layoutModuleCanBeAdded(argument)) {
1309                         LYXERR0("Module `" << argument <<
1310                                 "' cannot be added due to failed requirements or "
1311                                 "conflicts with installed modules.");
1312                         break;
1313                 }
1314                 // FIXME: this modifies the document in cap::switchBetweenClasses
1315                 //  without calling recordUndo. Fix this before using
1316                 //  recordUndoBufferParams().
1317                 cur.recordUndoFullBuffer();
1318                 buffer_.params().addLayoutModule(argument);
1319                 makeDocumentClass();
1320                 dr.screenUpdate(Update::Force);
1321                 dr.forceBufferUpdate();
1322                 break;
1323         }
1324
1325         case LFUN_TEXTCLASS_APPLY: {
1326                 // since this shortcircuits, the second call is made only if
1327                 // the first fails
1328                 bool const success =
1329                         LayoutFileList::get().load(argument, buffer_.temppath()) ||
1330                         LayoutFileList::get().load(argument, buffer_.filePath());
1331                 if (!success) {
1332                         docstring s = bformat(_("The document class `%1$s' "
1333                                                  "could not be loaded."), from_utf8(argument));
1334                         frontend::Alert::error(_("Could not load class"), s);
1335                         break;
1336                 }
1337
1338                 LayoutFile const * old_layout = buffer_.params().baseClass();
1339                 LayoutFile const * new_layout = &(LayoutFileList::get()[argument]);
1340
1341                 if (old_layout == new_layout)
1342                         // nothing to do
1343                         break;
1344
1345                 // Save the old, possibly modular, layout for use in conversion.
1346                 // FIXME: this modifies the document in cap::switchBetweenClasses
1347                 //  without calling recordUndo. Fix this before using
1348                 //  recordUndoBufferParams().
1349                 cur.recordUndoFullBuffer();
1350                 buffer_.params().setBaseClass(argument);
1351                 makeDocumentClass();
1352                 dr.screenUpdate(Update::Force);
1353                 dr.forceBufferUpdate();
1354                 break;
1355         }
1356
1357         case LFUN_TEXTCLASS_LOAD: {
1358                 // since this shortcircuits, the second call is made only if
1359                 // the first fails
1360                 bool const success =
1361                         LayoutFileList::get().load(argument, buffer_.temppath()) ||
1362                         LayoutFileList::get().load(argument, buffer_.filePath());
1363                 if (!success) {
1364                         docstring s = bformat(_("The document class `%1$s' "
1365                                                  "could not be loaded."), from_utf8(argument));
1366                         frontend::Alert::error(_("Could not load class"), s);
1367                 }
1368                 break;
1369         }
1370
1371         case LFUN_LAYOUT_RELOAD: {
1372                 LayoutFileIndex bc = buffer_.params().baseClassID();
1373                 LayoutFileList::get().reset(bc);
1374                 buffer_.params().setBaseClass(bc);
1375                 makeDocumentClass();
1376                 dr.screenUpdate(Update::Force);
1377                 dr.forceBufferUpdate();
1378                 break;
1379         }
1380
1381         case LFUN_UNDO: {
1382                 dr.setMessage(_("Undo"));
1383                 cur.clearSelection();
1384                 // We need to find out if the bibliography information
1385                 // has changed. See bug #11055.
1386                 // So these should not be references...
1387                 LayoutModuleList const engines = buffer().params().citeEngine();
1388                 CiteEngineType const enginetype = buffer().params().citeEngineType();
1389                 if (!cur.textUndo())
1390                         dr.setMessage(_("No further undo information"));
1391                 else {
1392                         dr.screenUpdate(Update::Force | Update::FitCursor);
1393                         dr.forceBufferUpdate();
1394                         if (buffer().params().citeEngine() != engines ||
1395                             buffer().params().citeEngineType() != enginetype)
1396                                 buffer().invalidateCiteLabels();
1397                 }
1398                 break;
1399         }
1400
1401         case LFUN_REDO: {
1402                 dr.setMessage(_("Redo"));
1403                 cur.clearSelection();
1404                 // We need to find out if the bibliography information
1405                 // has changed. See bug #11055.
1406                 // So these should not be references...
1407                 LayoutModuleList const engines = buffer().params().citeEngine();
1408                 CiteEngineType const enginetype = buffer().params().citeEngineType();
1409                 if (!cur.textRedo())
1410                         dr.setMessage(_("No further redo information"));
1411                 else {
1412                         dr.screenUpdate(Update::Force | Update::FitCursor);
1413                         dr.forceBufferUpdate();
1414                         if (buffer().params().citeEngine() != engines ||
1415                             buffer().params().citeEngineType() != enginetype)
1416                                 buffer().invalidateCiteLabels();
1417                 }
1418                 break;
1419         }
1420
1421         case LFUN_FONT_STATE:
1422                 dr.setMessage(cur.currentState(false));
1423                 break;
1424
1425         case LFUN_BOOKMARK_SAVE:
1426                 saveBookmark(convert<unsigned int>(to_utf8(cmd.argument())));
1427                 break;
1428
1429         case LFUN_LABEL_GOTO: {
1430                 docstring label = cmd.argument();
1431                 if (label.empty()) {
1432                         InsetRef * inset =
1433                                 getInsetByCode<InsetRef>(cur, REF_CODE);
1434                         if (inset) {
1435                                 label = inset->getParam("reference");
1436                                 // persistent=false: use temp_bookmark
1437                                 saveBookmark(0);
1438                         }
1439                 }
1440                 if (!label.empty()) {
1441                         gotoLabel(label);
1442                         // at the moment, this is redundant, since gotoLabel will
1443                         // eventually call LFUN_PARAGRAPH_GOTO, but it seems best
1444                         // to have it here.
1445                         dr.screenUpdate(Update::Force | Update::FitCursor);
1446                 }
1447                 break;
1448         }
1449
1450         case LFUN_PARAGRAPH_GOTO: {
1451                 int const id = convert<int>(cmd.getArg(0));
1452                 pos_type const pos = convert<int>(cmd.getArg(1));
1453                 if (id < 0)
1454                         break;
1455                 string const str_id_end = cmd.getArg(2);
1456                 string const str_pos_end = cmd.getArg(3);
1457                 int i = 0;
1458                 for (Buffer * b = &buffer_; i == 0 || b != &buffer_;
1459                         b = theBufferList().next(b)) {
1460
1461                         Cursor curs(*this);
1462                         curs.setCursor(b->getParFromID(id));
1463                         if (curs.atEnd()) {
1464                                 LYXERR(Debug::INFO, "No matching paragraph found! [" << id << "].");
1465                                 ++i;
1466                                 continue;
1467                         }
1468                         LYXERR(Debug::INFO, "Paragraph " << curs.paragraph().id()
1469                                 << " found in buffer `"
1470                                 << b->absFileName() << "'.");
1471
1472                         if (b == &buffer_) {
1473                                 bool success;
1474                                 if (str_id_end.empty() || str_pos_end.empty()) {
1475                                         // Set the cursor
1476                                         curs.pos() = pos;
1477                                         mouseSetCursor(curs);
1478                                         success = true;
1479                                 } else {
1480                                         int const id_end = convert<int>(str_id_end);
1481                                         pos_type const pos_end = convert<int>(str_pos_end);
1482                                         success = setCursorFromEntries({id, pos},
1483                                                                        {id_end, pos_end});
1484                                 }
1485                                 if (success)
1486                                         dr.screenUpdate(Update::Force | Update::FitCursor);
1487                         } else {
1488                                 // Switch to other buffer view and resend cmd
1489                                 lyx::dispatch(FuncRequest(
1490                                         LFUN_BUFFER_SWITCH, b->absFileName()));
1491                                 lyx::dispatch(cmd);
1492                         }
1493                         break;
1494                 }
1495                 break;
1496         }
1497
1498         case LFUN_NOTE_NEXT:
1499                 gotoInset(this, NOTE_CODE, false);
1500                 break;
1501
1502         case LFUN_REFERENCE_NEXT: {
1503                 vector<InsetCode> tmp;
1504                 tmp.push_back(LABEL_CODE);
1505                 tmp.push_back(REF_CODE);
1506                 gotoInset(this, tmp, true);
1507                 break;
1508         }
1509
1510         case LFUN_CHANGE_NEXT:
1511                 findNextChange(this);
1512                 // FIXME: Move this LFUN to Buffer so that we don't have to do this:
1513                 dr.screenUpdate(Update::Force | Update::FitCursor);
1514                 break;
1515
1516         case LFUN_CHANGE_PREVIOUS:
1517                 findPreviousChange(this);
1518                 // FIXME: Move this LFUN to Buffer so that we don't have to do this:
1519                 dr.screenUpdate(Update::Force | Update::FitCursor);
1520                 break;
1521
1522         case LFUN_CHANGES_MERGE:
1523                 if (findNextChange(this) || findPreviousChange(this)) {
1524                         dr.screenUpdate(Update::Force | Update::FitCursor);
1525                         dr.forceBufferUpdate();
1526                         showDialog("changes");
1527                 }
1528                 break;
1529
1530         case LFUN_ALL_CHANGES_ACCEPT:
1531                 // select complete document
1532                 cur.reset();
1533                 cur.selHandle(true);
1534                 buffer_.text().cursorBottom(cur);
1535                 // accept everything in a single step to support atomic undo
1536                 buffer_.text().acceptOrRejectChanges(cur, Text::ACCEPT);
1537                 cur.resetAnchor();
1538                 // FIXME: Move this LFUN to Buffer so that we don't have to do this:
1539                 dr.screenUpdate(Update::Force | Update::FitCursor);
1540                 dr.forceBufferUpdate();
1541                 break;
1542
1543         case LFUN_ALL_CHANGES_REJECT:
1544                 // select complete document
1545                 cur.reset();
1546                 cur.selHandle(true);
1547                 buffer_.text().cursorBottom(cur);
1548                 // reject everything in a single step to support atomic undo
1549                 // Note: reject does not work recursively; the user may have to repeat the operation
1550                 buffer_.text().acceptOrRejectChanges(cur, Text::REJECT);
1551                 cur.resetAnchor();
1552                 // FIXME: Move this LFUN to Buffer so that we don't have to do this:
1553                 dr.screenUpdate(Update::Force | Update::FitCursor);
1554                 dr.forceBufferUpdate();
1555                 break;
1556
1557         case LFUN_WORD_FIND_FORWARD:
1558         case LFUN_WORD_FIND_BACKWARD: {
1559                 // FIXME THREAD
1560                 // Would it maybe be better if this variable were view specific anyway?
1561                 static docstring last_search;
1562                 docstring searched_string;
1563
1564                 if (!cmd.argument().empty()) {
1565                         last_search = cmd.argument();
1566                         searched_string = cmd.argument();
1567                 } else {
1568                         searched_string = last_search;
1569                 }
1570
1571                 if (searched_string.empty())
1572                         break;
1573
1574                 bool const fw = act == LFUN_WORD_FIND_FORWARD;
1575                 docstring const data =
1576                         find2string(searched_string, true, false, fw);
1577                 bool found = lyxfind(this, FuncRequest(LFUN_WORD_FIND, data));
1578                 if (found)
1579                         dr.screenUpdate(Update::Force | Update::FitCursor);
1580                 break;
1581         }
1582
1583         case LFUN_WORD_FIND: {
1584                 FuncRequest req = cmd;
1585                 if (cmd.argument().empty() && !d->search_request_cache_.argument().empty())
1586                         req = d->search_request_cache_;
1587                 if (req.argument().empty()) {
1588                         lyx::dispatch(FuncRequest(LFUN_DIALOG_SHOW, "findreplace"));
1589                         break;
1590                 }
1591                 if (lyxfind(this, req))
1592                         dr.screenUpdate(Update::Force | Update::FitCursor);
1593
1594                 d->search_request_cache_ = req;
1595                 break;
1596         }
1597
1598         case LFUN_WORD_REPLACE: {
1599                 bool has_deleted = false;
1600                 if (cur.selection()) {
1601                         DocIterator beg = cur.selectionBegin();
1602                         DocIterator end = cur.selectionEnd();
1603                         if (beg.pit() == end.pit()) {
1604                                 for (pos_type p = beg.pos() ; p < end.pos() ; ++p) {
1605                                         if (!cur.inMathed() && cur.paragraph().isDeleted(p)) {
1606                                                 has_deleted = true;
1607                                                 break;
1608                                         }
1609                                 }
1610                         }
1611                 }
1612                 if (lyxreplace(this, cmd, has_deleted)) {
1613                         dr.forceBufferUpdate();
1614                         dr.screenUpdate(Update::Force | Update::FitCursor);
1615                 }
1616                 break;
1617         }
1618
1619         case LFUN_WORD_FINDADV: {
1620                 FindAndReplaceOptions opt;
1621                 istringstream iss(to_utf8(cmd.argument()));
1622                 iss >> opt;
1623                 if (findAdv(this, opt)) {
1624                         dr.screenUpdate(Update::Force | Update::FitCursor);
1625                         cur.dispatched();
1626                         dispatched = true;
1627                 } else {
1628                         cur.undispatched();
1629                         dispatched = false;
1630                 }
1631                 break;
1632         }
1633
1634         case LFUN_MARK_OFF:
1635                 cur.clearSelection();
1636                 dr.setMessage(from_utf8(N_("Mark off")));
1637                 break;
1638
1639         case LFUN_MARK_ON:
1640                 cur.clearSelection();
1641                 cur.setMark(true);
1642                 dr.setMessage(from_utf8(N_("Mark on")));
1643                 break;
1644
1645         case LFUN_MARK_TOGGLE:
1646                 cur.selection(false);
1647                 if (cur.mark()) {
1648                         cur.setMark(false);
1649                         dr.setMessage(from_utf8(N_("Mark removed")));
1650                 } else {
1651                         cur.setMark(true);
1652                         dr.setMessage(from_utf8(N_("Mark set")));
1653                 }
1654                 cur.resetAnchor();
1655                 break;
1656
1657         case LFUN_SCREEN_SHOW_CURSOR:
1658                 showCursor();
1659                 break;
1660
1661         case LFUN_SCREEN_RECENTER:
1662                 recenter();
1663                 break;
1664
1665         case LFUN_BIBTEX_DATABASE_ADD: {
1666                 Cursor tmpcur = cur;
1667                 findInset(tmpcur, BIBTEX_CODE, false);
1668                 InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
1669                                                 BIBTEX_CODE);
1670                 if (inset) {
1671                         if (inset->addDatabase(cmd.argument()))
1672                                 dr.forceBufferUpdate();
1673                 }
1674                 break;
1675         }
1676
1677         case LFUN_BIBTEX_DATABASE_DEL: {
1678                 Cursor tmpcur = cur;
1679                 findInset(tmpcur, BIBTEX_CODE, false);
1680                 InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
1681                                                 BIBTEX_CODE);
1682                 if (inset) {
1683                         if (inset->delDatabase(cmd.argument()))
1684                                 dr.forceBufferUpdate();
1685                 }
1686                 break;
1687         }
1688
1689         case LFUN_GRAPHICS_UNIFY: {
1690
1691                 cur.recordUndoFullBuffer();
1692
1693                 DocIterator from, to;
1694                 from = cur.selectionBegin();
1695                 to = cur.selectionEnd();
1696
1697                 string const newId = cmd.getArg(0);
1698                 bool fetchId = newId.empty(); //if we wait for groupId from first graphics inset
1699
1700                 InsetGraphicsParams grp_par;
1701                 if (!fetchId)
1702                         InsetGraphics::string2params(graphics::getGroupParams(buffer_, newId), buffer_, grp_par);
1703
1704                 if (!from.nextInset())  //move to closest inset
1705                         from.forwardInset();
1706
1707                 while (!from.empty() && from < to) {
1708                         Inset * inset = from.nextInset();
1709                         if (!inset)
1710                                 break;
1711                         InsetGraphics * ig = inset->asInsetGraphics();
1712                         if (ig) {
1713                                 InsetGraphicsParams inspar = ig->getParams();
1714                                 if (fetchId) {
1715                                         grp_par = inspar;
1716                                         fetchId = false;
1717                                 } else {
1718                                         grp_par.filename = inspar.filename;
1719                                         ig->setParams(grp_par);
1720                                 }
1721                         }
1722                         from.forwardInset();
1723                 }
1724                 dr.screenUpdate(Update::Force); //needed if triggered from context menu
1725                 break;
1726         }
1727
1728         case LFUN_STATISTICS: {
1729                 DocIterator from, to;
1730                 if (cur.selection()) {
1731                         from = cur.selectionBegin();
1732                         to = cur.selectionEnd();
1733                 } else {
1734                         from = doc_iterator_begin(&buffer_);
1735                         to = doc_iterator_end(&buffer_);
1736                 }
1737                 buffer_.updateStatistics(from, to);
1738                 int const words = buffer_.wordCount();
1739                 int const chars = buffer_.charCount(false);
1740                 int const chars_blanks = buffer_.charCount(true);
1741                 docstring message;
1742                 if (cur.selection())
1743                         message = _("Statistics for the selection:");
1744                 else
1745                         message = _("Statistics for the document:");
1746                 message += "\n\n";
1747                 if (words != 1)
1748                         message += bformat(_("%1$d words"), words);
1749                 else
1750                         message += _("One word");
1751                 message += "\n";
1752                 if (chars_blanks != 1)
1753                         message += bformat(_("%1$d characters (including blanks)"),
1754                                           chars_blanks);
1755                 else
1756                         message += _("One character (including blanks)");
1757                 message += "\n";
1758                 if (chars != 1)
1759                         message += bformat(_("%1$d characters (excluding blanks)"),
1760                                           chars);
1761                 else
1762                         message += _("One character (excluding blanks)");
1763
1764                 Alert::information(_("Statistics"), message);
1765         }
1766                 break;
1767
1768         case LFUN_SCREEN_UP:
1769         case LFUN_SCREEN_DOWN: {
1770                 Point p = getPos(cur);
1771                 // This code has been commented out to enable to scroll down a
1772                 // document, even if there are large insets in it (see bug #5465).
1773                 /*if (p.y_ < 0 || p.y_ > height_) {
1774                         // The cursor is off-screen so recenter before proceeding.
1775                         showCursor();
1776                         p = getPos(cur);
1777                 }*/
1778                 int const scrolled = scroll(act == LFUN_SCREEN_UP
1779                         ? -height_ : height_);
1780                 if (act == LFUN_SCREEN_UP && scrolled > -height_)
1781                         p = Point(0, 0);
1782                 if (act == LFUN_SCREEN_DOWN && scrolled < height_)
1783                         p = Point(width_, height_);
1784                 bool const in_texted = cur.inTexted();
1785                 cur.setCursor(doc_iterator_begin(cur.buffer()));
1786                 cur.selHandle(false);
1787                 // Force an immediate computation of metrics because we need it below
1788                 processUpdateFlags(Update::Force);
1789
1790                 d->text_metrics_[&buffer_.text()].editXY(cur, p.x_, p.y_,
1791                         true, act == LFUN_SCREEN_UP);
1792                 //FIXME: what to do with cur.x_target()?
1793                 bool update = in_texted && cur.bv().checkDepm(cur, old);
1794                 cur.finishUndo();
1795
1796                 if (update || cur.mark())
1797                         dr.screenUpdate(Update::Force | Update::FitCursor);
1798                 if (update)
1799                         dr.forceBufferUpdate();
1800                 break;
1801         }
1802
1803         case LFUN_SCROLL: {
1804                 string const scroll_type = cmd.getArg(0);
1805                 int scroll_step = 0;
1806                 if (scroll_type == "line")
1807                         scroll_step = d->scrollbarParameters_.single_step;
1808                 else if (scroll_type == "page")
1809                         scroll_step = d->scrollbarParameters_.page_step;
1810                 else
1811                         return;
1812                 string const scroll_quantity = cmd.getArg(1);
1813                 if (scroll_quantity == "up")
1814                         scrollUp(scroll_step);
1815                 else if (scroll_quantity == "down")
1816                         scrollDown(scroll_step);
1817                 else {
1818                         int const scroll_value = convert<int>(scroll_quantity);
1819                         if (scroll_value)
1820                                 scroll(scroll_step * scroll_value);
1821                 }
1822                 dr.screenUpdate(Update::ForceDraw);
1823                 dr.forceBufferUpdate();
1824                 break;
1825         }
1826
1827         case LFUN_SCREEN_UP_SELECT: {
1828                 // FIXME: why is the algorithm different from LFUN_SCREEN_UP?
1829                 cur.selHandle(true);
1830                 if (isTopScreen()) {
1831                         lyx::dispatch(FuncRequest(LFUN_BUFFER_BEGIN_SELECT));
1832                         cur.finishUndo();
1833                         break;
1834                 }
1835                 int y = getPos(cur).y_;
1836                 int const ymin = y - height_ + defaultRowHeight();
1837                 while (y > ymin && cur.up())
1838                         y = getPos(cur).y_;
1839
1840                 cur.finishUndo();
1841                 dr.screenUpdate(Update::SinglePar | Update::FitCursor);
1842                 break;
1843         }
1844
1845         case LFUN_SCREEN_DOWN_SELECT: {
1846                 // FIXME: why is the algorithm different from LFUN_SCREEN_DOWN?
1847                 cur.selHandle(true);
1848                 if (isBottomScreen()) {
1849                         lyx::dispatch(FuncRequest(LFUN_BUFFER_END_SELECT));
1850                         cur.finishUndo();
1851                         break;
1852                 }
1853                 int y = getPos(cur).y_;
1854                 int const ymax = y + height_ - defaultRowHeight();
1855                 while (y < ymax && cur.down())
1856                         y = getPos(cur).y_;
1857
1858                 cur.finishUndo();
1859                 dr.screenUpdate(Update::SinglePar | Update::FitCursor);
1860                 break;
1861         }
1862
1863
1864         case LFUN_INSET_SELECT_ALL: {
1865                 // true if all cells are selected
1866                 bool const all_selected = cur.depth() > 1
1867                     && cur.selBegin().at_begin()
1868                     && cur.selEnd().at_end();
1869                 // true if some cells are selected
1870                 bool const cells_selected = cur.depth() > 1
1871                     && cur.selBegin().at_cell_begin()
1872                         && cur.selEnd().at_cell_end();
1873                 if (all_selected || (cells_selected && !cur.inset().isTable())) {
1874                         // All the contents of the inset if selected, or only at
1875                         // least one cell but inset is not a table.
1876                         // Select the inset from outside.
1877                         cur.pop();
1878                         cur.resetAnchor();
1879                         cur.selection(true);
1880                         cur.posForward();
1881                 } else if (cells_selected) {
1882                         // At least one complete cell is selected and inset is a table.
1883                         // Select all cells
1884                         cur.idx() = 0;
1885                         cur.pos() = 0;
1886                         cur.resetAnchor();
1887                         cur.selection(true);
1888                         cur.idx() = cur.lastidx();
1889                         cur.pos() = cur.lastpos();
1890                 } else {
1891                         // select current cell
1892                         cur.pit() = 0;
1893                         cur.pos() = 0;
1894                         cur.resetAnchor();
1895                         cur.selection(true);
1896                         cur.pit() = cur.lastpit();
1897                         cur.pos() = cur.lastpos();
1898                 }
1899                 cur.setCurrentFont();
1900                 dr.screenUpdate(Update::Force);
1901                 break;
1902         }
1903
1904
1905         case LFUN_UNICODE_INSERT: {
1906                 if (cmd.argument().empty())
1907                         break;
1908
1909                 FuncCode code = cur.inset().currentMode() == Inset::MATH_MODE ?
1910                         LFUN_MATH_INSERT : LFUN_SELF_INSERT;
1911                 int i = 0;
1912                 while (true) {
1913                         docstring const arg = from_utf8(cmd.getArg(i));
1914                         if (arg.empty())
1915                                 break;
1916                         if (!isHex(arg)) {
1917                                 LYXERR0("Not a hexstring: " << arg);
1918                                 ++i;
1919                                 continue;
1920                         }
1921                         char_type c = hexToInt(arg);
1922                         if (c >= 32 && c < 0x10ffff) {
1923                                 LYXERR(Debug::KEY, "Inserting c: " << c);
1924                                 lyx::dispatch(FuncRequest(code, docstring(1, c)));
1925                         }
1926                         ++i;
1927                 }
1928                 break;
1929         }
1930
1931
1932         // This would be in Buffer class if only Cursor did not
1933         // require a bufferview
1934         case LFUN_INSET_FORALL: {
1935                 docstring const name = from_utf8(cmd.getArg(0));
1936                 string const commandstr = cmd.getLongArg(1);
1937                 FuncRequest const fr = lyxaction.lookupFunc(commandstr);
1938
1939                 // an arbitrary number to limit number of iterations
1940                 const int max_iter = 100000;
1941                 int iterations = 0;
1942                 Cursor & curs = d->cursor_;
1943                 Cursor const savecur = curs;
1944                 curs.reset();
1945                 if (!curs.nextInset())
1946                         curs.forwardInset();
1947                 curs.beginUndoGroup();
1948                 while(curs && iterations < max_iter) {
1949                         Inset * const ins = curs.nextInset();
1950                         if (!ins)
1951                                 break;
1952                         docstring insname = ins->layoutName();
1953                         while (!insname.empty()) {
1954                                 if (insname == name || name == from_utf8("*")) {
1955                                         curs.recordUndo();
1956                                         lyx::dispatch(fr, dr);
1957                                         ++iterations;
1958                                         break;
1959                                 }
1960                                 size_t const i = insname.rfind(':');
1961                                 if (i == string::npos)
1962                                         break;
1963                                 insname = insname.substr(0, i);
1964                         }
1965                         // if we did not delete the inset, skip it
1966                         if (!curs.nextInset() || curs.nextInset() == ins)
1967                                 curs.forwardInset();
1968                 }
1969                 curs = savecur;
1970                 curs.fixIfBroken();
1971                 /** This is a dummy undo record only to remember the cursor
1972                  * that has just been set; this will be used on a redo action
1973                  * (see ticket #10097)
1974
1975                  * FIXME: a better fix would be to have a way to set the
1976                  * cursor value directly, but I am not sure it is worth it.
1977                  */
1978                 curs.recordUndo();
1979                 curs.endUndoGroup();
1980                 dr.screenUpdate(Update::Force);
1981                 dr.forceBufferUpdate();
1982
1983                 if (iterations >= max_iter) {
1984                         dr.setError(true);
1985                         dr.setMessage(bformat(_("`inset-forall' interrupted because number of actions is larger than %1$d"), max_iter));
1986                 } else
1987                         dr.setMessage(bformat(_("Applied \"%1$s\" to %2$d insets"), from_utf8(commandstr), iterations));
1988                 break;
1989         }
1990
1991
1992         case LFUN_BRANCH_ADD_INSERT: {
1993                 docstring branch_name = from_utf8(cmd.getArg(0));
1994                 if (branch_name.empty())
1995                         if (!Alert::askForText(branch_name, _("Branch name")) ||
1996                                                 branch_name.empty())
1997                                 break;
1998
1999                 DispatchResult drtmp;
2000                 buffer_.dispatch(FuncRequest(LFUN_BRANCH_ADD, branch_name), drtmp);
2001                 if (drtmp.error()) {
2002                         Alert::warning(_("Branch already exists"), drtmp.message());
2003                         break;
2004                 }
2005                 docstring const sep = buffer_.params().branchlist().separator();
2006                 for (docstring const & branch : getVectorFromString(branch_name, sep))
2007                         lyx::dispatch(FuncRequest(LFUN_BRANCH_INSERT, branch));
2008                 break;
2009         }
2010
2011         case LFUN_KEYMAP_OFF:
2012                 getIntl().keyMapOn(false);
2013                 break;
2014
2015         case LFUN_KEYMAP_PRIMARY:
2016                 getIntl().keyMapPrim();
2017                 break;
2018
2019         case LFUN_KEYMAP_SECONDARY:
2020                 getIntl().keyMapSec();
2021                 break;
2022
2023         case LFUN_KEYMAP_TOGGLE:
2024                 getIntl().toggleKeyMap();
2025                 break;
2026
2027         case LFUN_DIALOG_SHOW_NEW_INSET: {
2028                 string const name = cmd.getArg(0);
2029                 string data = trim(to_utf8(cmd.argument()).substr(name.size()));
2030                 if (decodeInsetParam(name, data, buffer_))
2031                         lyx::dispatch(FuncRequest(LFUN_DIALOG_SHOW, name + " " + data));
2032                 else
2033                         lyxerr << "Inset type '" << name <<
2034                         "' not recognized in LFUN_DIALOG_SHOW_NEW_INSET" <<  endl;
2035                 break;
2036         }
2037
2038         case LFUN_CITATION_INSERT: {
2039                 if (argument.empty()) {
2040                         lyx::dispatch(FuncRequest(LFUN_DIALOG_SHOW_NEW_INSET, "citation"));
2041                         break;
2042                 }
2043                 // we can have one optional argument, delimited by '|'
2044                 // citation-insert <key>|<text_before>
2045                 // this should be enhanced to also support text_after
2046                 // and citation style
2047                 string arg = argument;
2048                 string opt1;
2049                 if (contains(argument, "|")) {
2050                         arg = token(argument, '|', 0);
2051                         opt1 = token(argument, '|', 1);
2052                 }
2053
2054                 // if our cursor is directly in front of or behind a citation inset,
2055                 // we will instead add the new key to it.
2056                 Inset * inset = cur.nextInset();
2057                 if (!inset || inset->lyxCode() != CITE_CODE)
2058                         inset = cur.prevInset();
2059                 if (inset && inset->lyxCode() == CITE_CODE) {
2060                         InsetCitation * icite = static_cast<InsetCitation *>(inset);
2061                         if (icite->addKey(arg)) {
2062                                 dr.forceBufferUpdate();
2063                                 dr.screenUpdate(Update::FitCursor | Update::SinglePar);
2064                                 if (!opt1.empty())
2065                                         LYXERR0("Discarding optional argument to citation-insert.");
2066                         }
2067                         dispatched = true;
2068                         break;
2069                 }
2070                 InsetCommandParams icp(CITE_CODE);
2071                 icp["key"] = from_utf8(arg);
2072                 if (!opt1.empty())
2073                         icp["before"] = from_utf8(opt1);
2074                 icp["literal"] =
2075                         from_ascii(InsetCitation::last_literal ? "true" : "false");
2076                 string icstr = InsetCommand::params2string(icp);
2077                 FuncRequest fr(LFUN_INSET_INSERT, icstr);
2078                 lyx::dispatch(fr);
2079                 break;
2080         }
2081
2082         case LFUN_INSET_APPLY: {
2083                 string const name = cmd.getArg(0);
2084                 Inset * inset = editedInset(name);
2085                 if (!inset) {
2086                         FuncRequest fr(LFUN_INSET_INSERT, cmd.argument());
2087                         lyx::dispatch(fr);
2088                         break;
2089                 }
2090                 // put cursor in front of inset.
2091                 if (!setCursorFromInset(inset)) {
2092                         LASSERT(false, break);
2093                 }
2094                 cur.recordUndo();
2095                 FuncRequest fr(LFUN_INSET_MODIFY, cmd.argument());
2096                 inset->dispatch(cur, fr);
2097                 dr.screenUpdate(cur.result().screenUpdate());
2098                 if (cur.result().needBufferUpdate())
2099                         dr.forceBufferUpdate();
2100                 break;
2101         }
2102
2103         // FIXME:
2104         // The change of language of buffer belongs to the Buffer class.
2105         // We have to do it here because we need a cursor for Undo.
2106         // When Undo::recordUndoBufferParams() is implemented someday
2107         // LFUN_BUFFER_LANGUAGE should be handled by the Buffer class.
2108         case LFUN_BUFFER_LANGUAGE: {
2109                 Language const * oldL = buffer_.params().language;
2110                 Language const * newL = languages.getLanguage(argument);
2111                 if (!newL || oldL == newL)
2112                         break;
2113                 if (oldL->rightToLeft() == newL->rightToLeft()) {
2114                         cur.recordUndoFullBuffer();
2115                         buffer_.changeLanguage(oldL, newL);
2116                         cur.setCurrentFont();
2117                         dr.forceBufferUpdate();
2118                 }
2119                 break;
2120         }
2121
2122         case LFUN_FILE_INSERT_PLAINTEXT_PARA:
2123         case LFUN_FILE_INSERT_PLAINTEXT: {
2124                 bool const as_paragraph = (act == LFUN_FILE_INSERT_PLAINTEXT_PARA);
2125                 string const fname = to_utf8(cmd.argument());
2126                 if (!FileName::isAbsolute(fname))
2127                         dr.setMessage(_("Absolute filename expected."));
2128                 else
2129                         insertPlaintextFile(FileName(fname), as_paragraph);
2130                 break;
2131         }
2132
2133         default:
2134                 // OK, so try the Buffer itself...
2135                 buffer_.dispatch(cmd, dr);
2136                 dispatched = dr.dispatched();
2137                 break;
2138         }
2139
2140         buffer_.undo().endUndoGroup();
2141         dr.dispatched(dispatched);
2142
2143         // NOTE: The code below is copied from Cursor::dispatch. If you
2144         // need to modify this, please update the other one too.
2145
2146         // notify insets we just entered/left
2147         if (cursor() != old) {
2148                 old.beginUndoGroup();
2149                 old.fixIfBroken();
2150                 bool badcursor = notifyCursorLeavesOrEnters(old, cursor());
2151                 if (badcursor) {
2152                         cursor().fixIfBroken();
2153                         resetInlineCompletionPos();
2154                 }
2155                 old.endUndoGroup();
2156         }
2157 }
2158
2159
2160 docstring const BufferView::requestSelection()
2161 {
2162         Cursor & cur = d->cursor_;
2163
2164         LYXERR(Debug::SELECTION, "requestSelection: cur.selection: " << cur.selection());
2165         if (!cur.selection()) {
2166                 d->xsel_cache_.set = false;
2167                 return docstring();
2168         }
2169
2170         LYXERR(Debug::SELECTION, "requestSelection: xsel_cache.set: " << d->xsel_cache_.set);
2171         if (!d->xsel_cache_.set ||
2172             cur.top() != d->xsel_cache_.cursor ||
2173             cur.realAnchor().top() != d->xsel_cache_.anchor)
2174         {
2175                 d->xsel_cache_.cursor = cur.top();
2176                 d->xsel_cache_.anchor = cur.realAnchor().top();
2177                 d->xsel_cache_.set = cur.selection();
2178                 return cur.selectionAsString(false);
2179         }
2180         return docstring();
2181 }
2182
2183
2184 void BufferView::clearSelection()
2185 {
2186         d->cursor_.clearSelection();
2187         // Clear the selection buffer. Otherwise a subsequent
2188         // middle-mouse-button paste would use the selection buffer,
2189         // not the more current external selection.
2190         cap::clearSelection();
2191         d->xsel_cache_.set = false;
2192         // The buffer did not really change, but this causes the
2193         // redraw we need because we cleared the selection above.
2194         buffer_.changed(false);
2195 }
2196
2197
2198 void BufferView::resize(int width, int height)
2199 {
2200         // Update from work area
2201         width_ = width;
2202         height_ = height;
2203
2204         // Clear the paragraph height cache.
2205         d->par_height_.clear();
2206         // Redo the metrics.
2207         updateMetrics();
2208 }
2209
2210
2211 Inset const * BufferView::getCoveringInset(Text const & text,
2212                 int x, int y) const
2213 {
2214         TextMetrics & tm = d->text_metrics_[&text];
2215         Inset * inset = tm.checkInsetHit(x, y);
2216         if (!inset)
2217                 return 0;
2218
2219         if (!inset->descendable(*this))
2220                 // No need to go further down if the inset is not
2221                 // descendable.
2222                 return inset;
2223
2224         size_t cell_number = inset->nargs();
2225         // Check all the inner cell.
2226         for (size_t i = 0; i != cell_number; ++i) {
2227                 Text const * inner_text = inset->getText(i);
2228                 if (inner_text) {
2229                         // Try deeper.
2230                         Inset const * inset_deeper =
2231                                 getCoveringInset(*inner_text, x, y);
2232                         if (inset_deeper)
2233                                 return inset_deeper;
2234                 }
2235         }
2236
2237         return inset;
2238 }
2239
2240
2241 void BufferView::updateHoveredInset() const
2242 {
2243         // Get inset under mouse, if there is one.
2244         int const x = d->mouse_position_cache_.x_;
2245         int const y = d->mouse_position_cache_.y_;
2246         Inset const * covering_inset = getCoveringInset(buffer_.text(), x, y);
2247
2248         d->clickable_inset_ = covering_inset && covering_inset->clickable(*this, x, y);
2249
2250         if (covering_inset == d->last_inset_)
2251                 // Same inset, no need to do anything...
2252                 return;
2253
2254         bool need_redraw = false;
2255         if (d->last_inset_) {
2256                 // Remove the hint on the last hovered inset (if any).
2257                 need_redraw |= d->last_inset_->setMouseHover(this, false);
2258                 d->last_inset_ = 0;
2259         }
2260
2261         if (covering_inset && covering_inset->setMouseHover(this, true)) {
2262                 need_redraw = true;
2263                 // Only the insets that accept the hover state, do
2264                 // clear the last_inset_, so only set the last_inset_
2265                 // member if the hovered setting is accepted.
2266                 d->last_inset_ = covering_inset;
2267         }
2268
2269         if (need_redraw) {
2270                 LYXERR(Debug::PAINTING, "Mouse hover detected at: ("
2271                                 << d->mouse_position_cache_.x_ << ", "
2272                                 << d->mouse_position_cache_.y_ << ")");
2273
2274                 d->update_strategy_ = DecorationUpdate;
2275
2276                 // This event (moving without mouse click) is not passed further.
2277                 // This should be changed if it is further utilized.
2278                 buffer_.changed(false);
2279         }
2280 }
2281
2282
2283 void BufferView::clearLastInset(Inset * inset) const
2284 {
2285         if (d->last_inset_ != inset) {
2286                 LYXERR0("Wrong last_inset!");
2287                 LATTEST(false);
2288         }
2289         d->last_inset_ = 0;
2290 }
2291
2292
2293 void BufferView::mouseEventDispatch(FuncRequest const & cmd0)
2294 {
2295         //lyxerr << "[ cmd0 " << cmd0 << "]" << endl;
2296
2297         // This is only called for mouse related events including
2298         // LFUN_FILE_OPEN generated by drag-and-drop.
2299         FuncRequest cmd = cmd0;
2300
2301         Cursor old = cursor();
2302         Cursor cur(*this);
2303         cur.push(buffer_.inset());
2304         cur.selection(d->cursor_.selection());
2305
2306         // Either the inset under the cursor or the
2307         // surrounding Text will handle this event.
2308
2309         // make sure we stay within the screen...
2310         cmd.set_y(min(max(cmd.y(), -1), height_));
2311
2312         d->mouse_position_cache_.x_ = cmd.x();
2313         d->mouse_position_cache_.y_ = cmd.y();
2314
2315         if (cmd.action() == LFUN_MOUSE_MOTION && cmd.button() == mouse_button::none) {
2316                 updateHoveredInset();
2317                 return;
2318         }
2319
2320         // Build temporary cursor.
2321         Inset * inset = d->text_metrics_[&buffer_.text()].editXY(cur, cmd.x(), cmd.y());
2322         if (inset) {
2323                 // If inset is not editable, cur.pos() might point behind the
2324                 // inset (depending on cmd.x(), cmd.y()). This is needed for
2325                 // editing to fix bug 9628, but e.g. the context menu needs a
2326                 // cursor in front of the inset.
2327                 if ((inset->hasSettings() || !inset->contextMenuName().empty()
2328                      || inset->lyxCode() == SEPARATOR_CODE) &&
2329                     cur.nextInset() != inset && cur.prevInset() == inset)
2330                         cur.posBackward();
2331         } else if (cur.inTexted() && cur.pos()
2332                         && cur.paragraph().isEnvSeparator(cur.pos() - 1)) {
2333                 // Always place cursor in front of a separator inset.
2334                 cur.posBackward();
2335         }
2336
2337         // Put anchor at the same position.
2338         cur.resetAnchor();
2339
2340         cur.beginUndoGroup();
2341
2342         // Try to dispatch to an non-editable inset near this position
2343         // via the temp cursor. If the inset wishes to change the real
2344         // cursor it has to do so explicitly by using
2345         //  cur.bv().cursor() = cur;  (or similar)
2346         if (inset)
2347                 inset->dispatch(cur, cmd);
2348
2349         // Now dispatch to the temporary cursor. If the real cursor should
2350         // be modified, the inset's dispatch has to do so explicitly.
2351         if (!inset || !cur.result().dispatched())
2352                 cur.dispatch(cmd);
2353
2354         // Notify left insets
2355         if (cur != old) {
2356                 bool badcursor = old.fixIfBroken() | cur.fixIfBroken();
2357                 badcursor |= notifyCursorLeavesOrEnters(old, cur);
2358                 if (badcursor)
2359                         cursor().fixIfBroken();
2360         }
2361
2362         cur.endUndoGroup();
2363
2364         // Do we have a selection?
2365         theSelection().haveSelection(cursor().selection());
2366
2367         if (cur.needBufferUpdate()) {
2368                 cur.clearBufferUpdate();
2369                 buffer().updateBuffer();
2370         }
2371
2372         // If the command has been dispatched,
2373         if (cur.result().dispatched() || cur.result().screenUpdate())
2374                 processUpdateFlags(cur.result().screenUpdate());
2375 }
2376
2377
2378 int BufferView::minVisiblePart()
2379 {
2380         return 2 * defaultRowHeight();
2381 }
2382
2383
2384 int BufferView::scroll(int y)
2385 {
2386         if (y > 0)
2387                 return scrollDown(y);
2388         if (y < 0)
2389                 return scrollUp(-y);
2390         return 0;
2391 }
2392
2393
2394 int BufferView::scrollDown(int offset)
2395 {
2396         Text * text = &buffer_.text();
2397         TextMetrics & tm = d->text_metrics_[text];
2398         int const ymax = height_ + offset;
2399         while (true) {
2400                 pair<pit_type, ParagraphMetrics const *> last = tm.last();
2401                 int bottom_pos = last.second->position() + last.second->descent();
2402                 if (lyxrc.scroll_below_document)
2403                         bottom_pos += height_ - minVisiblePart();
2404                 if (last.first + 1 == int(text->paragraphs().size())) {
2405                         if (bottom_pos <= height_)
2406                                 return 0;
2407                         offset = min(offset, bottom_pos - height_);
2408                         break;
2409                 }
2410                 if (bottom_pos > ymax)
2411                         break;
2412                 tm.newParMetricsDown();
2413         }
2414         d->anchor_ypos_ -= offset;
2415         return -offset;
2416 }
2417
2418
2419 int BufferView::scrollUp(int offset)
2420 {
2421         Text * text = &buffer_.text();
2422         TextMetrics & tm = d->text_metrics_[text];
2423         int ymin = - offset;
2424         while (true) {
2425                 pair<pit_type, ParagraphMetrics const *> first = tm.first();
2426                 int top_pos = first.second->position() - first.second->ascent();
2427                 if (first.first == 0) {
2428                         if (top_pos >= 0)
2429                                 return 0;
2430                         offset = min(offset, - top_pos);
2431                         break;
2432                 }
2433                 if (top_pos < ymin)
2434                         break;
2435                 tm.newParMetricsUp();
2436         }
2437         d->anchor_ypos_ += offset;
2438         return offset;
2439 }
2440
2441
2442 bool BufferView::setCursorFromRow(int row)
2443 {
2444         TexRow::TextEntry start, end;
2445         tie(start,end) = buffer_.texrow().getEntriesFromRow(row);
2446         LYXERR(Debug::LATEX,
2447                "setCursorFromRow: for row " << row << ", TexRow has found "
2448                "start (id=" << start.id << ",pos=" << start.pos << "), "
2449                "end (id=" << end.id << ",pos=" << end.pos << ")");
2450         return setCursorFromEntries(start, end);
2451 }
2452
2453
2454 bool BufferView::setCursorFromEntries(TexRow::TextEntry start,
2455                                       TexRow::TextEntry end)
2456 {
2457         DocIterator dit_start, dit_end;
2458         tie(dit_start,dit_end) =
2459                 TexRow::getDocIteratorsFromEntries(start, end, buffer_);
2460         if (!dit_start)
2461                 return false;
2462         // Setting selection start
2463         d->cursor_.clearSelection();
2464         setCursor(dit_start);
2465         // Setting selection end
2466         if (dit_end) {
2467                 d->cursor_.resetAnchor();
2468                 setCursorSelectionTo(dit_end);
2469         }
2470         return true;
2471 }
2472
2473
2474 bool BufferView::setCursorFromInset(Inset const * inset)
2475 {
2476         // are we already there?
2477         if (cursor().nextInset() == inset)
2478                 return true;
2479
2480         // Inset is not at cursor position. Find it in the document.
2481         Cursor cur(*this);
2482         cur.reset();
2483         while (cur && cur.nextInset() != inset)
2484                 cur.forwardInset();
2485
2486         if (cur) {
2487                 setCursor(cur);
2488                 return true;
2489         }
2490         return false;
2491 }
2492
2493
2494 void BufferView::gotoLabel(docstring const & label)
2495 {
2496         for (Buffer const * buf : buffer().allRelatives()) {
2497                 // find label
2498                 for (TocItem const & item : *buf->tocBackend().toc("label")) {
2499                         if (label == item.str()) {
2500                                 lyx::dispatch(item.action());
2501                                 return;
2502                         }
2503                 }
2504         }
2505 }
2506
2507
2508 TextMetrics const & BufferView::textMetrics(Text const * t) const
2509 {
2510         return const_cast<BufferView *>(this)->textMetrics(t);
2511 }
2512
2513
2514 TextMetrics & BufferView::textMetrics(Text const * t)
2515 {
2516         LBUFERR(t);
2517         TextMetricsCache::iterator tmc_it  = d->text_metrics_.find(t);
2518         if (tmc_it == d->text_metrics_.end()) {
2519                 tmc_it = d->text_metrics_.insert(
2520                         make_pair(t, TextMetrics(this, const_cast<Text *>(t)))).first;
2521         }
2522         return tmc_it->second;
2523 }
2524
2525
2526 ParagraphMetrics const & BufferView::parMetrics(Text const * t,
2527                 pit_type pit) const
2528 {
2529         return textMetrics(t).parMetrics(pit);
2530 }
2531
2532
2533 int BufferView::workHeight() const
2534 {
2535         return height_;
2536 }
2537
2538
2539 void BufferView::setCursor(DocIterator const & dit)
2540 {
2541         d->cursor_.reset();
2542         size_t const n = dit.depth();
2543         for (size_t i = 0; i < n; ++i)
2544                 dit[i].inset().edit(d->cursor_, true);
2545
2546         d->cursor_.setCursor(dit);
2547         d->cursor_.selection(false);
2548         d->cursor_.setCurrentFont();
2549         // FIXME
2550         // It seems on general grounds as if this is probably needed, but
2551         // it is not yet clear.
2552         // See bug #7394 and r38388.
2553         // d->cursor.resetAnchor();
2554 }
2555
2556
2557 void BufferView::setCursorSelectionTo(DocIterator const & dit)
2558 {
2559         size_t const n = dit.depth();
2560         for (size_t i = 0; i < n; ++i)
2561                 dit[i].inset().edit(d->cursor_, true);
2562
2563         d->cursor_.selection(true);
2564         d->cursor_.setCursorSelectionTo(dit);
2565         d->cursor_.setCurrentFont();
2566 }
2567
2568
2569 bool BufferView::checkDepm(Cursor & cur, Cursor & old)
2570 {
2571         // Would be wrong to delete anything if we have a selection.
2572         if (cur.selection())
2573                 return false;
2574
2575         bool need_anchor_change = false;
2576         bool changed = d->cursor_.text()->deleteEmptyParagraphMechanism(cur, old,
2577                 need_anchor_change);
2578
2579         if (need_anchor_change)
2580                 cur.resetAnchor();
2581
2582         if (!changed)
2583                 return false;
2584
2585         d->cursor_ = cur;
2586
2587         // we would rather not do this here, but it needs to be done before
2588         // the changed() signal is sent.
2589         buffer_.updateBuffer();
2590
2591         buffer_.changed(true);
2592         return true;
2593 }
2594
2595
2596 bool BufferView::mouseSetCursor(Cursor & cur, bool const select)
2597 {
2598         LASSERT(&cur.bv() == this, return false);
2599
2600         if (!select)
2601                 // this event will clear selection so we save selection for
2602                 // persistent selection
2603                 cap::saveSelection(cursor());
2604
2605         d->cursor_.macroModeClose();
2606         // If a macro has been finalized, the cursor might have been broken
2607         cur.fixIfBroken();
2608
2609         // Has the cursor just left the inset?
2610         bool const leftinset = (&d->cursor_.inset() != &cur.inset());
2611         if (leftinset)
2612                 d->cursor_.fixIfBroken();
2613
2614         // do the dEPM magic if needed
2615         // FIXME: (1) move this to InsetText::notifyCursorLeaves?
2616         // FIXME: (2) if we had a working InsetText::notifyCursorLeaves,
2617         // the leftinset bool would not be necessary (badcursor instead).
2618         bool update = leftinset;
2619
2620         if (select) {
2621                 d->cursor_.setSelection();
2622                 d->cursor_.setCursorSelectionTo(cur);
2623         } else {
2624                 if (d->cursor_.inTexted())
2625                         update |= checkDepm(cur, d->cursor_);
2626                 d->cursor_.resetAnchor();
2627                 d->cursor_.setCursor(cur);
2628                 d->cursor_.clearSelection();
2629         }
2630         d->cursor_.boundary(cur.boundary());
2631         d->cursor_.finishUndo();
2632         d->cursor_.setCurrentFont();
2633         if (update)
2634                 cur.forceBufferUpdate();
2635         return update;
2636 }
2637
2638
2639 void BufferView::putSelectionAt(DocIterator const & cur,
2640                                 int length, bool backwards)
2641 {
2642         d->cursor_.clearSelection();
2643
2644         setCursor(cur);
2645
2646         if (length) {
2647                 if (backwards) {
2648                         d->cursor_.pos() += length;
2649                         d->cursor_.setSelection(d->cursor_, -length);
2650                 } else
2651                         d->cursor_.setSelection(d->cursor_, length);
2652         }
2653 }
2654
2655
2656 bool BufferView::selectIfEmpty(DocIterator & cur)
2657 {
2658         if ((cur.inTexted() && !cur.paragraph().empty())
2659             || (cur.inMathed() && !cur.cell().empty()))
2660                 return false;
2661
2662         pit_type const beg_pit = cur.pit();
2663         if (beg_pit > 0) {
2664                 // The paragraph associated to this item isn't
2665                 // the first one, so it can be selected
2666                 cur.backwardPos();
2667         } else {
2668                 // We have to resort to select the space between the
2669                 // end of this item and the begin of the next one
2670                 cur.forwardPos();
2671         }
2672         if (cur.empty()) {
2673                 // If it is the only item in the document,
2674                 // nothing can be selected
2675                 return false;
2676         }
2677         pit_type const end_pit = cur.pit();
2678         pos_type const end_pos = cur.pos();
2679         d->cursor_.clearSelection();
2680         d->cursor_.reset();
2681         d->cursor_.setCursor(cur);
2682         d->cursor_.pit() = beg_pit;
2683         d->cursor_.pos() = 0;
2684         d->cursor_.selection(false);
2685         d->cursor_.resetAnchor();
2686         d->cursor_.pit() = end_pit;
2687         d->cursor_.pos() = end_pos;
2688         d->cursor_.setSelection();
2689         return true;
2690 }
2691
2692
2693 Cursor & BufferView::cursor()
2694 {
2695         return d->cursor_;
2696 }
2697
2698
2699 Cursor const & BufferView::cursor() const
2700 {
2701         return d->cursor_;
2702 }
2703
2704
2705 bool BufferView::singleParUpdate()
2706 {
2707         Text & buftext = buffer_.text();
2708         pit_type const bottom_pit = d->cursor_.bottom().pit();
2709         TextMetrics & tm = textMetrics(&buftext);
2710         int old_height = tm.parMetrics(bottom_pit).height();
2711
2712         // make sure inline completion pointer is ok
2713         if (d->inlineCompletionPos_.fixIfBroken())
2714                 d->inlineCompletionPos_ = DocIterator();
2715
2716         // In Single Paragraph mode, rebreak only
2717         // the (main text, not inset!) paragraph containing the cursor.
2718         // (if this paragraph contains insets etc., rebreaking will
2719         // recursively descend)
2720         tm.redoParagraph(bottom_pit);
2721         ParagraphMetrics const & pm = tm.parMetrics(bottom_pit);
2722         if (pm.height() != old_height)
2723                 // Paragraph height has changed so we cannot proceed to
2724                 // the singlePar optimisation.
2725                 return false;
2726
2727         tm.updatePosCache(bottom_pit);
2728
2729         LYXERR(Debug::PAINTING, "\ny1: " << pm.position() - pm.ascent()
2730                 << " y2: " << pm.position() + pm.descent()
2731                 << " pit: " << bottom_pit
2732                 << " singlepar: 1");
2733         return true;
2734 }
2735
2736
2737 void BufferView::updateMetrics()
2738 {
2739         updateMetrics(d->update_flags_);
2740         d->update_strategy_ = FullScreenUpdate;
2741 }
2742
2743
2744 void BufferView::updateMetrics(Update::flags & update_flags)
2745 {
2746         if (height_ == 0 || width_ == 0)
2747                 return;
2748
2749         Text & buftext = buffer_.text();
2750         pit_type const npit = int(buftext.paragraphs().size());
2751
2752         // Clear out the position cache in case of full screen redraw,
2753         d->coord_cache_.clear();
2754
2755         // Clear out paragraph metrics to avoid having invalid metrics
2756         // in the cache from paragraphs not relayouted below
2757         // The complete text metrics will be redone.
2758         d->text_metrics_.clear();
2759
2760         TextMetrics & tm = textMetrics(&buftext);
2761
2762         // make sure inline completion pointer is ok
2763         if (d->inlineCompletionPos_.fixIfBroken())
2764                 d->inlineCompletionPos_ = DocIterator();
2765
2766         if (d->anchor_pit_ >= npit)
2767                 // The anchor pit must have been deleted...
2768                 d->anchor_pit_ = npit - 1;
2769
2770         // Rebreak anchor paragraph.
2771         tm.redoParagraph(d->anchor_pit_);
2772         ParagraphMetrics & anchor_pm = tm.par_metrics_[d->anchor_pit_];
2773
2774         // position anchor
2775         if (d->anchor_pit_ == 0) {
2776                 int scrollRange = d->scrollbarParameters_.max - d->scrollbarParameters_.min;
2777
2778                 // Complete buffer visible? Then it's easy.
2779                 if (scrollRange == 0)
2780                         d->anchor_ypos_ = anchor_pm.ascent();
2781                 else {
2782                         // avoid empty space above the first row
2783                         d->anchor_ypos_ = min(d->anchor_ypos_, anchor_pm.ascent());
2784                 }
2785         }
2786         anchor_pm.setPosition(d->anchor_ypos_);
2787         tm.updatePosCache(d->anchor_pit_);
2788
2789         LYXERR(Debug::PAINTING, "metrics: "
2790                 << " anchor pit = " << d->anchor_pit_
2791                 << " anchor ypos = " << d->anchor_ypos_);
2792
2793         // Redo paragraphs above anchor if necessary.
2794         int y1 = d->anchor_ypos_ - anchor_pm.ascent();
2795         // We are now just above the anchor paragraph.
2796         pit_type pit1 = d->anchor_pit_ - 1;
2797         for (; pit1 >= 0 && y1 >= 0; --pit1) {
2798                 tm.redoParagraph(pit1);
2799                 ParagraphMetrics & pm = tm.par_metrics_[pit1];
2800                 y1 -= pm.descent();
2801                 // Save the paragraph position in the cache.
2802                 pm.setPosition(y1);
2803                 tm.updatePosCache(pit1);
2804                 y1 -= pm.ascent();
2805         }
2806
2807         // Redo paragraphs below the anchor if necessary.
2808         int y2 = d->anchor_ypos_ + anchor_pm.descent();
2809         // We are now just below the anchor paragraph.
2810         pit_type pit2 = d->anchor_pit_ + 1;
2811         for (; pit2 < npit && y2 <= height_; ++pit2) {
2812                 tm.redoParagraph(pit2);
2813                 ParagraphMetrics & pm = tm.par_metrics_[pit2];
2814                 y2 += pm.ascent();
2815                 // Save the paragraph position in the cache.
2816                 pm.setPosition(y2);
2817                 tm.updatePosCache(pit2);
2818                 y2 += pm.descent();
2819         }
2820
2821         LYXERR(Debug::PAINTING, "Metrics: "
2822                 << " anchor pit = " << d->anchor_pit_
2823                 << " anchor ypos = " << d->anchor_ypos_
2824                 << " y1 = " << y1
2825                 << " y2 = " << y2
2826                 << " pit1 = " << pit1
2827                 << " pit2 = " << pit2);
2828
2829         // metrics is done, full drawing is necessary now
2830         update_flags = (update_flags & ~Update::Force) | Update::ForceDraw;
2831
2832         // Now update the positions of insets in the cache.
2833         updatePosCache();
2834
2835         if (lyxerr.debugging(Debug::WORKAREA)) {
2836                 LYXERR(Debug::WORKAREA, "BufferView::updateMetrics");
2837                 d->coord_cache_.dump();
2838         }
2839 }
2840
2841
2842 void BufferView::updatePosCache()
2843 {
2844         // this is the "nodraw" drawing stage: only set the positions of the
2845         // insets in metrics cache.
2846         frontend::NullPainter np;
2847         draw(np, false);
2848 }
2849
2850
2851 void BufferView::insertLyXFile(FileName const & fname)
2852 {
2853         LASSERT(d->cursor_.inTexted(), return);
2854
2855         // Get absolute path of file and add ".lyx"
2856         // to the filename if necessary
2857         FileName filename = fileSearch(string(), fname.absFileName(), "lyx");
2858
2859         docstring const disp_fn = makeDisplayPath(filename.absFileName());
2860         // emit message signal.
2861         message(bformat(_("Inserting document %1$s..."), disp_fn));
2862
2863         docstring res;
2864         Buffer buf(filename.absFileName(), false);
2865         if (buf.loadLyXFile() == Buffer::ReadSuccess) {
2866                 ErrorList & el = buffer_.errorList("Parse");
2867                 // Copy the inserted document error list into the current buffer one.
2868                 el = buf.errorList("Parse");
2869                 buffer_.undo().recordUndo(d->cursor_);
2870                 cap::pasteParagraphList(d->cursor_, buf.paragraphs(),
2871                                              buf.params().documentClassPtr(), el);
2872                 res = _("Document %1$s inserted.");
2873         } else {
2874                 res = _("Could not insert document %1$s");
2875         }
2876
2877         buffer_.changed(true);
2878         // emit message signal.
2879         message(bformat(res, disp_fn));
2880 }
2881
2882
2883 Point BufferView::coordOffset(DocIterator const & dit) const
2884 {
2885         int x = 0;
2886         int y = 0;
2887         int lastw = 0;
2888
2889         // Addup contribution of nested insets, from inside to outside,
2890         // keeping the outer paragraph for a special handling below
2891         for (size_t i = dit.depth() - 1; i >= 1; --i) {
2892                 CursorSlice const & sl = dit[i];
2893                 int xx = 0;
2894                 int yy = 0;
2895
2896                 // get relative position inside sl.inset()
2897                 sl.inset().cursorPos(*this, sl, dit.boundary() && (i + 1 == dit.depth()), xx, yy);
2898
2899                 // Make relative position inside of the edited inset relative to sl.inset()
2900                 x += xx;
2901                 y += yy;
2902
2903                 // In case of an RTL inset, the edited inset will be positioned to the left
2904                 // of xx:yy
2905                 if (sl.text()) {
2906                         bool boundary_i = dit.boundary() && i + 1 == dit.depth();
2907                         bool rtl = textMetrics(sl.text()).isRTL(sl, boundary_i);
2908                         if (rtl)
2909                                 x -= lastw;
2910                 }
2911
2912                 // remember width for the case that sl.inset() is positioned in an RTL inset
2913                 lastw = sl.inset().dimension(*this).wid;
2914
2915                 //lyxerr << "Cursor::getPos, i: "
2916                 // << i << " x: " << xx << " y: " << y << endl;
2917         }
2918
2919         // Add contribution of initial rows of outermost paragraph
2920         CursorSlice const & sl = dit[0];
2921         TextMetrics const & tm = textMetrics(sl.text());
2922         ParagraphMetrics const & pm = tm.parMetrics(sl.pit());
2923
2924         LBUFERR(!pm.rows().empty());
2925         y -= pm.rows()[0].ascent();
2926 #if 1
2927         // FIXME: document this mess
2928         size_t rend;
2929         if (sl.pos() > 0 && dit.depth() == 1) {
2930                 int pos = sl.pos();
2931                 if (pos && dit.boundary())
2932                         --pos;
2933 //              lyxerr << "coordOffset: boundary:" << dit.boundary() << " depth:" << dit.depth() << " pos:" << pos << " sl.pos:" << sl.pos() << endl;
2934                 rend = pm.pos2row(pos);
2935         } else
2936                 rend = pm.pos2row(sl.pos());
2937 #else
2938         size_t rend = pm.pos2row(sl.pos());
2939 #endif
2940         for (size_t rit = 0; rit != rend; ++rit)
2941                 y += pm.rows()[rit].height();
2942         y += pm.rows()[rend].ascent();
2943
2944         TextMetrics const & bottom_tm = textMetrics(dit.bottom().text());
2945
2946         // Make relative position from the nested inset now bufferview absolute.
2947         int xx = bottom_tm.cursorX(dit.bottom(), dit.boundary() && dit.depth() == 1);
2948         x += xx;
2949
2950         // In the RTL case place the nested inset at the left of the cursor in
2951         // the outer paragraph
2952         bool boundary_1 = dit.boundary() && 1 == dit.depth();
2953         bool rtl = bottom_tm.isRTL(dit.bottom(), boundary_1);
2954         if (rtl)
2955                 x -= lastw;
2956
2957         return Point(x, y);
2958 }
2959
2960
2961 Point BufferView::getPos(DocIterator const & dit) const
2962 {
2963         if (!paragraphVisible(dit))
2964                 return Point(-1, -1);
2965
2966         CursorSlice const & bot = dit.bottom();
2967         TextMetrics const & tm = textMetrics(bot.text());
2968
2969         // offset from outer paragraph
2970         Point p = coordOffset(dit);
2971         p.y_ += tm.parMetrics(bot.pit()).position();
2972         return p;
2973 }
2974
2975
2976 bool BufferView::paragraphVisible(DocIterator const & dit) const
2977 {
2978         CursorSlice const & bot = dit.bottom();
2979         TextMetrics const & tm = textMetrics(bot.text());
2980
2981         return tm.contains(bot.pit());
2982 }
2983
2984
2985 void BufferView::caretPosAndHeight(Point & p, int & h) const
2986 {
2987         Cursor const & cur = cursor();
2988         Font const font = cur.real_current_font;
2989         frontend::FontMetrics const & fm = theFontMetrics(font);
2990         int const asc = fm.maxAscent();
2991         int const des = fm.maxDescent();
2992         h = asc + des;
2993         p = getPos(cur);
2994         p.y_ -= asc;
2995 }
2996
2997
2998 bool BufferView::cursorInView(Point const & p, int h) const
2999 {
3000         Cursor const & cur = cursor();
3001         // does the cursor touch the screen ?
3002         if (p.y_ + h < 0 || p.y_ >= workHeight() || !paragraphVisible(cur))
3003                 return false;
3004         return true;
3005 }
3006
3007
3008 int BufferView::horizScrollOffset() const
3009 {
3010         return d->horiz_scroll_offset_;
3011 }
3012
3013
3014 int BufferView::horizScrollOffset(Text const * text,
3015                                   pit_type pit, pos_type pos) const
3016 {
3017         // Is this a row that is currently scrolled?
3018         if (!d->current_row_slice_.empty()
3019             && &text->inset() == d->current_row_slice_.inset().asInsetText()
3020             && pit ==  d->current_row_slice_.pit()
3021             && pos ==  d->current_row_slice_.pos())
3022                 return d->horiz_scroll_offset_;
3023         return 0;
3024 }
3025
3026
3027 bool BufferView::hadHorizScrollOffset(Text const * text,
3028                                       pit_type pit, pos_type pos) const
3029 {
3030         return !d->last_row_slice_.empty()
3031                && &text->inset() == d->last_row_slice_.inset().asInsetText()
3032                && pit ==  d->last_row_slice_.pit()
3033                && pos ==  d->last_row_slice_.pos();
3034 }
3035
3036
3037 void BufferView::setCurrentRowSlice(CursorSlice const & rowSlice)
3038 {
3039         // nothing to do if the cursor was already on this row
3040         if (d->current_row_slice_ == rowSlice) {
3041                 d->last_row_slice_ = CursorSlice();
3042                 return;
3043         }
3044
3045         // if the (previous) current row was scrolled, we have to
3046         // remember it in order to repaint it next time.
3047         if (d->horiz_scroll_offset_ != 0)
3048                 d->last_row_slice_ = d->current_row_slice_;
3049         else
3050                 d->last_row_slice_ = CursorSlice();
3051
3052         // Since we changed row, the scroll offset is not valid anymore
3053         d->horiz_scroll_offset_ = 0;
3054         d->current_row_slice_ = rowSlice;
3055 }
3056
3057
3058 void BufferView::checkCursorScrollOffset()
3059 {
3060         CursorSlice rowSlice = d->cursor_.bottom();
3061         TextMetrics const & tm = textMetrics(rowSlice.text());
3062
3063         // Stop if metrics have not been computed yet, since it means
3064         // that there is nothing to do.
3065         if (!tm.contains(rowSlice.pit()))
3066                 return;
3067         ParagraphMetrics const & pm = tm.parMetrics(rowSlice.pit());
3068         Row const & row = pm.getRow(rowSlice.pos(),
3069                                     d->cursor_.boundary() && rowSlice == d->cursor_.top());
3070         rowSlice.pos() = row.pos();
3071
3072         // Set the row on which the cursor lives.
3073         setCurrentRowSlice(rowSlice);
3074
3075         // Current x position of the cursor in pixels
3076         int cur_x = getPos(d->cursor_).x_;
3077
3078         // Horizontal scroll offset of the cursor row in pixels
3079         int offset = d->horiz_scroll_offset_;
3080         int const MARGIN = 2 * theFontMetrics(d->cursor_.real_current_font).em()
3081                            + row.right_margin;
3082         if (row.right_x() <= workWidth() - row.right_margin) {
3083                 // Row is narrower than the work area, no offset needed.
3084                 offset = 0;
3085         } else {
3086                 if (cur_x - offset < MARGIN) {
3087                         // cursor would be too far right
3088                         offset = cur_x - MARGIN;
3089                 } else if (cur_x - offset > workWidth() - MARGIN) {
3090                         // cursor would be too far left
3091                         offset = cur_x - workWidth() + MARGIN;
3092                 }
3093                 // Correct the offset to make sure that we do not scroll too much
3094                 if (offset < 0)
3095                         offset = 0;
3096                 if (row.right_x() - offset < workWidth() - row.right_margin)
3097                         offset = row.right_x() - workWidth() + row.right_margin;
3098         }
3099
3100         //lyxerr << "cur_x=" << cur_x << ", offset=" << offset << ", row.wid=" << row.width() << ", margin=" << MARGIN << endl;
3101
3102         if (offset != d->horiz_scroll_offset_)
3103                 LYXERR(Debug::PAINTING, "Horiz. scroll offset changed from "
3104                        << d->horiz_scroll_offset_ << " to " << offset);
3105
3106         if (d->update_strategy_ == NoScreenUpdate
3107             && (offset != d->horiz_scroll_offset_
3108                 || !d->last_row_slice_.empty())) {
3109                 // FIXME: if one uses SingleParUpdate, then home/end
3110                 // will not work on long rows. Why?
3111                 d->update_strategy_ = FullScreenUpdate;
3112         }
3113
3114         d->horiz_scroll_offset_ = offset;
3115 }
3116
3117
3118 void BufferView::draw(frontend::Painter & pain, bool paint_caret)
3119 {
3120         if (height_ == 0 || width_ == 0)
3121                 return;
3122         LYXERR(Debug::PAINTING, (pain.isNull() ? "\t\t--- START NODRAW ---"
3123                                  : "\t\t*** START DRAWING ***"));
3124         Text & text = buffer_.text();
3125         TextMetrics const & tm = d->text_metrics_[&text];
3126         int const y = tm.first().second->position();
3127         PainterInfo pi(this, pain);
3128
3129         // Check whether the row where the cursor lives needs to be scrolled.
3130         // Update the drawing strategy if needed.
3131         checkCursorScrollOffset();
3132
3133         switch (d->update_strategy_) {
3134
3135         case NoScreenUpdate:
3136                 // no screen painting is actually needed. In nodraw stage
3137                 // however, the different coordinates of insets and paragraphs
3138                 // needs to be updated.
3139                 LYXERR(Debug::PAINTING, "Strategy: NoScreenUpdate");
3140                 pi.full_repaint = false;
3141                 if (pain.isNull()) {
3142                         pi.full_repaint = true;
3143                         tm.draw(pi, 0, y);
3144                 } else {
3145                         pi.full_repaint = false;
3146                         tm.draw(pi, 0, y);
3147                 }
3148                 break;
3149
3150         case SingleParUpdate:
3151                 pi.full_repaint = false;
3152                 LYXERR(Debug::PAINTING, "Strategy: SingleParUpdate");
3153                 // In general, only the current row of the outermost paragraph
3154                 // will be redrawn. Particular cases where selection spans
3155                 // multiple paragraph are correctly detected in TextMetrics.
3156                 tm.draw(pi, 0, y);
3157                 break;
3158
3159         case DecorationUpdate:
3160                 // FIXME: We should also distinguish DecorationUpdate to avoid text
3161                 // drawing if possible. This is not possible to do easily right now
3162                 // because of the single backing pixmap.
3163
3164         case FullScreenUpdate:
3165
3166                 LYXERR(Debug::PAINTING,
3167                        ((d->update_strategy_ == FullScreenUpdate)
3168                         ? "Strategy: FullScreenUpdate"
3169                         : "Strategy: DecorationUpdate"));
3170
3171                 // The whole screen, including insets, will be refreshed.
3172                 pi.full_repaint = true;
3173
3174                 // Clear background.
3175                 pain.fillRectangle(0, 0, width_, height_,
3176                         pi.backgroundColor(&buffer_.inset()));
3177
3178                 // Draw everything.
3179                 tm.draw(pi, 0, y);
3180
3181                 // and possibly grey out below
3182                 pair<pit_type, ParagraphMetrics const *> lastpm = tm.last();
3183                 int const y2 = lastpm.second->position() + lastpm.second->descent();
3184
3185                 if (y2 < height_) {
3186                         Color color = buffer().isInternal()
3187                                 ? Color_background : Color_bottomarea;
3188                         pain.fillRectangle(0, y2, width_, height_ - y2, color);
3189                 }
3190                 break;
3191         }
3192         LYXERR(Debug::PAINTING, (pain.isNull() ? "\t\t --- END NODRAW ---"
3193                                 : "\t\t *** END DRAWING ***"));
3194
3195         // The scrollbar needs an update.
3196         updateScrollbar();
3197
3198         // Normalize anchor for next time
3199         pair<pit_type, ParagraphMetrics const *> firstpm = tm.first();
3200         pair<pit_type, ParagraphMetrics const *> lastpm = tm.last();
3201         for (pit_type pit = firstpm.first; pit <= lastpm.first; ++pit) {
3202                 ParagraphMetrics const & pm = tm.parMetrics(pit);
3203                 if (pm.position() + pm.descent() > 0) {
3204                         if (d->anchor_pit_ != pit
3205                             || d->anchor_ypos_ != pm.position())
3206                                 LYXERR(Debug::PAINTING, "Found new anchor pit = " << d->anchor_pit_
3207                                        << "  anchor ypos = " << d->anchor_ypos_);
3208                         d->anchor_pit_ = pit;
3209                         d->anchor_ypos_ = pm.position();
3210                         break;
3211                 }
3212         }
3213         if (!pain.isNull()) {
3214                 // reset the update flags, everything has been done
3215                 d->update_flags_ = Update::None;
3216         }
3217
3218         // If a caret has to be painted, mark its text row as dirty to
3219         //make sure that it will be repainted on next redraw.
3220         /* FIXME: investigate whether this can be avoided when the cursor did not
3221          * move at all
3222          */
3223         if (paint_caret) {
3224                 Row const & caret_row = d->cursor_.textRow();
3225                 caret_row.changed(true);
3226         }
3227 }
3228
3229
3230 void BufferView::message(docstring const & msg)
3231 {
3232         if (d->gui_)
3233                 d->gui_->message(msg);
3234 }
3235
3236
3237 void BufferView::showDialog(string const & name)
3238 {
3239         if (d->gui_)
3240                 d->gui_->showDialog(name, string());
3241 }
3242
3243
3244 void BufferView::showDialog(string const & name,
3245         string const & data, Inset * inset)
3246 {
3247         if (d->gui_)
3248                 d->gui_->showDialog(name, data, inset);
3249 }
3250
3251
3252 void BufferView::updateDialog(string const & name, string const & data)
3253 {
3254         if (d->gui_)
3255                 d->gui_->updateDialog(name, data);
3256 }
3257
3258
3259 void BufferView::setGuiDelegate(frontend::GuiBufferViewDelegate * gui)
3260 {
3261         d->gui_ = gui;
3262 }
3263
3264
3265 // FIXME: Move this out of BufferView again
3266 docstring BufferView::contentsOfPlaintextFile(FileName const & fname)
3267 {
3268         if (!fname.isReadableFile()) {
3269                 docstring const error = from_ascii(strerror(errno));
3270                 docstring const file = makeDisplayPath(fname.absFileName(), 50);
3271                 docstring const text =
3272                   bformat(_("Could not read the specified document\n"
3273                             "%1$s\ndue to the error: %2$s"), file, error);
3274                 Alert::error(_("Could not read file"), text);
3275                 return docstring();
3276         }
3277
3278         if (!fname.isReadableFile()) {
3279                 docstring const file = makeDisplayPath(fname.absFileName(), 50);
3280                 docstring const text =
3281                   bformat(_("%1$s\n is not readable."), file);
3282                 Alert::error(_("Could not open file"), text);
3283                 return docstring();
3284         }
3285
3286         // FIXME UNICODE: We don't know the encoding of the file
3287         docstring file_content = fname.fileContents("UTF-8");
3288         if (file_content.empty()) {
3289                 Alert::error(_("Reading not UTF-8 encoded file"),
3290                              _("The file is not UTF-8 encoded.\n"
3291                                "It will be read as local 8Bit-encoded.\n"
3292                                "If this does not give the correct result\n"
3293                                "then please change the encoding of the file\n"
3294                                "to UTF-8 with a program other than LyX.\n"));
3295                 file_content = fname.fileContents("local8bit");
3296         }
3297
3298         return normalize_c(file_content);
3299 }
3300
3301
3302 void BufferView::insertPlaintextFile(FileName const & f, bool asParagraph)
3303 {
3304         docstring const tmpstr = contentsOfPlaintextFile(f);
3305
3306         if (tmpstr.empty())
3307                 return;
3308
3309         Cursor & cur = cursor();
3310         cap::replaceSelection(cur);
3311         buffer_.undo().recordUndo(cur);
3312         if (asParagraph)
3313                 cur.innerText()->insertStringAsParagraphs(cur, tmpstr, cur.current_font);
3314         else
3315                 cur.innerText()->insertStringAsLines(cur, tmpstr, cur.current_font);
3316
3317         buffer_.changed(true);
3318 }
3319
3320
3321 docstring const & BufferView::inlineCompletion() const
3322 {
3323         return d->inlineCompletion_;
3324 }
3325
3326
3327 size_t const & BufferView::inlineCompletionUniqueChars() const
3328 {
3329         return d->inlineCompletionUniqueChars_;
3330 }
3331
3332
3333 DocIterator const & BufferView::inlineCompletionPos() const
3334 {
3335         return d->inlineCompletionPos_;
3336 }
3337
3338
3339 void BufferView::resetInlineCompletionPos()
3340 {
3341         d->inlineCompletionPos_ = DocIterator();
3342 }
3343
3344
3345 bool samePar(DocIterator const & a, DocIterator const & b)
3346 {
3347         if (a.empty() && b.empty())
3348                 return true;
3349         if (a.empty() || b.empty())
3350                 return false;
3351         if (a.depth() != b.depth())
3352                 return false;
3353         return &a.innerParagraph() == &b.innerParagraph();
3354 }
3355
3356
3357 void BufferView::setInlineCompletion(Cursor const & cur, DocIterator const & pos,
3358         docstring const & completion, size_t uniqueChars)
3359 {
3360         uniqueChars = min(completion.size(), uniqueChars);
3361         bool changed = d->inlineCompletion_ != completion
3362                 || d->inlineCompletionUniqueChars_ != uniqueChars;
3363         bool singlePar = true;
3364         d->inlineCompletion_ = completion;
3365         d->inlineCompletionUniqueChars_ = min(completion.size(), uniqueChars);
3366
3367         //lyxerr << "setInlineCompletion pos=" << pos << " completion=" << completion << " uniqueChars=" << uniqueChars << std::endl;
3368
3369         // at new position?
3370         DocIterator const & old = d->inlineCompletionPos_;
3371         if (old != pos) {
3372                 //lyxerr << "inlineCompletionPos changed" << std::endl;
3373                 // old or pos are in another paragraph?
3374                 if ((!samePar(cur, pos) && !pos.empty())
3375                     || (!samePar(cur, old) && !old.empty())) {
3376                         singlePar = false;
3377                         //lyxerr << "different paragraph" << std::endl;
3378                 }
3379                 d->inlineCompletionPos_ = pos;
3380         }
3381
3382         // set update flags
3383         if (changed) {
3384                 if (singlePar && !(cur.result().screenUpdate() & Update::Force))
3385                         cur.screenUpdateFlags(cur.result().screenUpdate() | Update::SinglePar);
3386                 else
3387                         cur.screenUpdateFlags(cur.result().screenUpdate() | Update::Force);
3388         }
3389 }
3390
3391
3392 bool BufferView::clickableInset() const
3393 {
3394         return d->clickable_inset_;
3395 }
3396
3397 } // namespace lyx