src/BufferView_pimpl.C

   1 /**
   2  * \file BufferView_pimpl.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Asger Alstrup
   7  * \author Alfredo Braunstein
   8  * \author Lars Gullik Bjønnes
   9  * \author Jean-Marc Lasgouttes
  10  * \author Angus Leeming
  11  * \author John Levon
  12  * \author André Pönitz
  13  * \author Dekel Tsur
  14  * \author Jürgen Vigna
  15  *
  16  * Full author contact details are available in file CREDITS.
  17  */
  18
  19 #include <config.h>
  20
  21 #include "BufferView_pimpl.h"
  22 #include "buffer.h"
  23 #include "buffer_funcs.h"
  24 #include "bufferlist.h"
  25 #include "bufferparams.h"
  26 #include "coordcache.h"
  27 #include "cursor.h"
  28 #include "CutAndPaste.h"
  29 #include "debug.h"
  30 #include "dispatchresult.h"
  31 #include "factory.h"
  32 #include "FloatList.h"
  33 #include "funcrequest.h"
  34 #include "FuncStatus.h"
  35 #include "gettext.h"
  36 #include "intl.h"
  37 #include "insetiterator.h"
  38 #include "LaTeXFeatures.h"
  39 #include "lyx_cb.h" // added for Dispatch functions
  40 #include "lyx_main.h"
  41 #include "lyxfind.h"
  42 #include "lyxfunc.h"
  43 #include "lyxtext.h"
  44 #include "lyxrc.h"
  45 #include "session.h"
  46 #include "metricsinfo.h"
  47 #include "paragraph.h"
  48 #include "paragraph_funcs.h"
  49 #include "ParagraphParameters.h"
  50 #include "pariterator.h"
  51 #include "rowpainter.h"
  52 #include "toc.h"
  53 #include "undo.h"
  54 #include "vspace.h"
  55
  56 #include "insets/insetbibtex.h"
  57 #include "insets/insetref.h"
  58 #include "insets/insettext.h"
  59
  60 #include "frontends/Alert.h"
  61 #include "frontends/Clipboard.h"
  62 #include "frontends/Dialogs.h"
  63 #include "frontends/FileDialog.h"
  64 #include "frontends/font_metrics.h"
  65 #include "frontends/Gui.h"
  66 #include "frontends/LyXView.h"
  67 #include "frontends/Painter.h"
  68 #include "frontends/WorkArea.h"
  69
  70 #include "graphics/Previews.h"
  71
  72 #include "support/convert.h"
  73 #include "support/filefilterlist.h"
  74 #include "support/filetools.h"
  75 #include "support/forkedcontr.h"
  76 #include "support/package.h"
  77 #include "support/types.h"
  78
  79 #include <boost/bind.hpp>
  80 #include <boost/current_function.hpp>
  81
  82 #include <functional>
  83 #include <vector>
  84
  85 using lyx::frontend::WorkArea;
  86 using lyx::frontend::Clipboard;
  87 using lyx::frontend::Gui;
  88
  89 using lyx::pos_type;
  90
  91 using lyx::support::addPath;
  92 using lyx::support::bformat;
  93 using lyx::support::FileFilterList;
  94 using lyx::support::fileSearch;
  95 using lyx::support::ForkedcallsController;
  96 using lyx::support::isDirWriteable;
  97 using lyx::support::makeDisplayPath;
  98 using lyx::support::makeAbsPath;
  99 using lyx::support::package;
 100
 101 using std::endl;
 102 using std::istringstream;
 103 using std::make_pair;
 104 using std::min;
 105 using std::max;
 106 using std::string;
 107 using std::mem_fun_ref;
 108 using std::vector;
 109
 110 extern BufferList bufferlist;
 111
 112
 113 namespace {
 114
 115 unsigned int const saved_positions_num = 20;
 116
 117 // All the below connection objects are needed because of a bug in some
 118 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
 119 // to these connections we avoid a segfault upon startup, and also at exit.
 120 // (Lgb)
 121
 122 boost::signals::connection timecon;
 123
 124 /// Return an inset of this class if it exists at the current cursor position
 125 template <class T>
 126 T * getInsetByCode(LCursor & cur, InsetBase::Code code)
 127 {
 128         T * inset = 0;
 129         DocIterator it = cur;
 130         if (it.nextInset() &&
 131             it.nextInset()->lyxCode() == code) {
 132                 inset = static_cast<T*>(it.nextInset());
 133         }
 134         return inset;
 135 }
 136
 137 } // anon namespace
 138
 139
 140 BufferView::Pimpl::Pimpl(BufferView & bv, LyXView * owner, WorkArea * workArea)
 141         : bv_(&bv), owner_(owner), workArea_(workArea), buffer_(0), wh_(0), cursor_timeout(400),
 142           using_xterm_cursor(false), cursor_(bv),
 143           anchor_ref_(0), offset_ref_(0)
 144 {
 145         xsel_cache_.set = false;
 146
 147         // Setup the signals
 148         timecon = cursor_timeout.timeout
 149                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 150
 151         cursor_timeout.start();
 152
 153         saved_positions.resize(saved_positions_num);
 154         // load saved bookmarks
 155         lyx::Session::BookmarkList & bmList = LyX::ref().session().loadBookmarks();
 156         for (lyx::Session::BookmarkList::iterator bm = bmList.begin();
 157                 bm != bmList.end(); ++bm)
 158                 if (bm->get<0>() < saved_positions_num)
 159                         saved_positions[bm->get<0>()] = Position( bm->get<1>(), bm->get<2>(), bm->get<3>() );
 160         // and then clear them
 161         bmList.clear();
 162 }
 163
 164
 165 void BufferView::Pimpl::addError(ErrorItem const & ei)
 166 {
 167         errorlist_.push_back(ei);
 168 }
 169
 170
 171 void BufferView::Pimpl::showReadonly(bool)
 172 {
 173         owner_->updateWindowTitle();
 174         owner_->getDialogs().updateBufferDependent(false);
 175 }
 176
 177
 178 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 179 {
 180         if (errorConnection_.connected())
 181                 disconnectBuffer();
 182
 183         errorConnection_ =
 184                 buf.error.connect(
 185                         boost::bind(&BufferView::Pimpl::addError, this, _1));
 186
 187         messageConnection_ =
 188                 buf.message.connect(
 189                         boost::bind(&LyXView::message, owner_, _1));
 190
 191         busyConnection_ =
 192                 buf.busy.connect(
 193                         boost::bind(&LyXView::busy, owner_, _1));
 194
 195         titleConnection_ =
 196                 buf.updateTitles.connect(
 197                         boost::bind(&LyXView::updateWindowTitle, owner_));
 198
 199         timerConnection_ =
 200                 buf.resetAutosaveTimers.connect(
 201                         boost::bind(&LyXView::resetAutosaveTimer, owner_));
 202
 203         readonlyConnection_ =
 204                 buf.readonly.connect(
 205                         boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 206
 207         closingConnection_ =
 208                 buf.closing.connect(
 209                         boost::bind(&BufferView::Pimpl::setBuffer, this, (Buffer *)0));
 210 }
 211
 212
 213 void BufferView::Pimpl::disconnectBuffer()
 214 {
 215         errorConnection_.disconnect();
 216         messageConnection_.disconnect();
 217         busyConnection_.disconnect();
 218         titleConnection_.disconnect();
 219         timerConnection_.disconnect();
 220         readonlyConnection_.disconnect();
 221         closingConnection_.disconnect();
 222 }
 223
 224
 225 void BufferView::Pimpl::newFile(string const & filename, string const & tname,
 226         bool isNamed)
 227 {
 228         setBuffer(::newFile(filename, tname, isNamed));
 229 }
 230
 231
 232 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 233 {
 234         // Get absolute path of file and add ".lyx"
 235         // to the filename if necessary
 236         string s = fileSearch(string(), filename, "lyx");
 237
 238         bool const found = !s.empty();
 239
 240         if (!found)
 241                 s = filename;
 242
 243         // File already open?
 244         if (bufferlist.exists(s)) {
 245                 string const file = makeDisplayPath(s, 20);
 246                 string text = bformat(_("The document %1$s is already "
 247                                         "loaded.\n\nDo you want to revert "
 248                                         "to the saved version?"), file);
 249                 int const ret = Alert::prompt(_("Revert to saved document?"),
 250                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 251
 252                 if (ret != 0) {
 253                         setBuffer(bufferlist.getBuffer(s));
 254                         return true;
 255                 }
 256                 // FIXME: should be LFUN_REVERT
 257                 if (!bufferlist.close(bufferlist.getBuffer(s), false))
 258                         return false;
 259                 // Fall through to new load. (Asger)
 260         }
 261
 262         Buffer * b = 0;
 263
 264         if (found) {
 265                 b = bufferlist.newBuffer(s);
 266                 connectBuffer(*b);
 267                 if (!::loadLyXFile(b, s)) {
 268                         bufferlist.release(b);
 269                         return false;
 270                 }
 271         } else {
 272                 string text = bformat(_("The document %1$s does not yet "
 273                                         "exist.\n\nDo you want to create "
 274                                         "a new document?"), s);
 275                 int const ret = Alert::prompt(_("Create new document?"),
 276                          text, 0, 1, _("&Create"), _("Cancel"));
 277
 278                 if (ret == 0)
 279                         b = ::newFile(s, string(), true);
 280                 else
 281                         return false;
 282         }
 283
 284         setBuffer(b);
 285         bv_->showErrorList(_("Parse"));
 286
 287         // scroll to the position when the file was last closed
 288         if (lyxrc.use_lastfilepos) {
 289                 lyx::pit_type pit;
 290                 lyx::pos_type pos;
 291                 boost::tie(pit, pos) = LyX::ref().session().loadFilePosition(s);
 292                 // I am not sure how to separate the following part to a function
 293                 // so I will leave this to Lars.
 294                 //
 295                 // check pit since the document may be externally changed.
 296                 if ( static_cast<size_t>(pit) < b->paragraphs().size() ) {
 297                         ParIterator it = b->par_iterator_begin();
 298                         ParIterator const end = b->par_iterator_end();
 299                         for (; it != end; ++it)
 300                                 if (it.pit() == pit) {
 301                                         // restored pos may be bigger than it->size
 302                                         bv_->setCursor(makeDocIterator(it, min(pos, it->size())));
 303                                         bv_->update(Update::FitCursor);
 304                                         break;
 305                                 }
 306                 }
 307         }
 308
 309         if (tolastfiles)
 310                 LyX::ref().session().addLastFile(b->fileName());
 311
 312         return true;
 313 }
 314
 315
 316 lyx::frontend::Gui & BufferView::Pimpl::gui() const
 317 {
 318         return owner_->gui();
 319 }
 320
 321
 322 lyx::frontend::WorkArea & BufferView::Pimpl::workarea() const
 323 {
 324         return *workArea_;
 325 }
 326
 327
 328 lyx::frontend::Clipboard & BufferView::Pimpl::clipboard() const
 329 {
 330         return owner_->gui().clipboard();
 331 }
 332
 333
 334 lyx::frontend::Painter & BufferView::Pimpl::painter() const
 335 {
 336         return workArea_->getPainter();
 337 }
 338
 339
 340 int BufferView::Pimpl::width() const
 341 {
 342         return width_;
 343 }
 344
 345
 346 int BufferView::Pimpl::height() const
 347 {
 348         return height_;
 349 }
 350
 351
 352 void BufferView::Pimpl::setBuffer(Buffer * b)
 353 {
 354         lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 355                             << "[ b = " << b << "]" << endl;
 356
 357         if (buffer_) {
 358                 disconnectBuffer();
 359                 // Save the actual cursor position and anchor inside the
 360                 // buffer so that it can be restored in case we rechange
 361                 // to this buffer later on.
 362                 buffer_->saveCursor(cursor_.selectionBegin(),
 363                                     cursor_.selectionEnd());
 364                 // current buffer is going to be switched-off, save cursor pos
 365                 LyX::ref().session().saveFilePosition(buffer_->fileName(),
 366                         boost::tie(cursor_.pit(), cursor_.pos()) );
 367         }
 368
 369         // If we are closing current buffer, switch to the first in
 370         // buffer list.
 371         if (!b) {
 372                 lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 373                                     << " No Buffer!" << endl;
 374                 // We are closing the buffer, use the first buffer as current
 375                 buffer_ = bufferlist.first();
 376                 owner_->getDialogs().hideBufferDependent();
 377         } else {
 378                 // Set current buffer
 379                 buffer_ = b;
 380         }
 381
 382         // Reset old cursor
 383         cursor_ = LCursor(*bv_);
 384         anchor_ref_ = 0;
 385         offset_ref_ = 0;
 386
 387
 388         // If we're quitting lyx, don't bother updating stuff
 389         if (quitting)
 390                 return;
 391
 392         if (buffer_) {
 393                 lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 394                                     << "Buffer addr: " << buffer_ << endl;
 395                 connectBuffer(*buffer_);
 396                 cursor_.push(buffer_->inset());
 397                 cursor_.resetAnchor();
 398                 buffer_->text().init(bv_);
 399                 buffer_->text().setCurrentFont(cursor_);
 400                 if (buffer_->getCursor().size() > 0 &&
 401                     buffer_->getAnchor().size() > 0)
 402                 {
 403                         cursor_.setCursor(buffer_->getAnchor().asDocIterator(&(buffer_->inset())));
 404                         cursor_.resetAnchor();
 405                         cursor_.setCursor(buffer_->getCursor().asDocIterator(&(buffer_->inset())));
 406                         cursor_.setSelection();
 407                 }
 408
 409                 // Buffer-dependent dialogs should be updated or
 410                 // hidden. This should go here because some dialogs (eg ToC)
 411                 // require bv_->text.
 412                 owner_->getDialogs().updateBufferDependent(true);
 413         }
 414
 415         update();
 416         owner_->updateMenubar();
 417         owner_->updateToolbars();
 418         owner_->updateLayoutChoice();
 419         owner_->updateWindowTitle();
 420
 421         // This is done after the layout combox has been populated
 422         if (buffer_) {
 423                 size_t i = cursor_.depth() - 1;
 424                 // we know we'll eventually find a paragraph
 425                 while (true) {
 426                         CursorSlice const & slice = cursor_[i];
 427                         if (!slice.inset().inMathed()) {
 428                                 LyXLayout_ptr const layout = slice.paragraph().layout();
 429                                 owner_->setLayout(layout->name());
 430                                 break;
 431                         }
 432                         BOOST_ASSERT(i>0);
 433                         --i;
 434                 }
 435         }
 436
 437         if (buffer_ && lyx::graphics::Previews::status() != LyXRC::PREVIEW_OFF)
 438                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 439 }
 440
 441
 442 void BufferView::Pimpl::resizeCurrentBuffer()
 443 {
 444         lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION << endl;
 445         owner_->busy(true);
 446         owner_->message(_("Formatting document..."));
 447
 448         LyXText * text = bv_->text();
 449         if (!text)
 450                 return;
 451
 452         text->init(bv_);
 453         update();
 454
 455         switchKeyMap();
 456         owner_->busy(false);
 457
 458         // Reset the "Formatting..." message
 459         owner_->clearMessage();
 460 }
 461
 462
 463 void BufferView::Pimpl::updateScrollbar()
 464 {
 465         if (!bv_->text()) {
 466                 lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION
 467                                      << " no text in updateScrollbar" << endl;
 468                 scrollbarParameters_.reset();
 469                 return;
 470         }
 471
 472         LyXText & t = *bv_->text();
 473         int const parsize = int(t.paragraphs().size() - 1);
 474         if (anchor_ref_ >  parsize)  {
 475                 anchor_ref_ = parsize;
 476                 offset_ref_ = 0;
 477         }
 478
 479         lyxerr[Debug::GUI]
 480                 << BOOST_CURRENT_FUNCTION
 481                 << " Updating scrollbar: height: " << t.paragraphs().size()
 482                 << " curr par: " << cursor_.bottom().pit()
 483                 << " default height " << defaultRowHeight() << endl;
 484
 485         // It would be better to fix the scrollbar to understand
 486         // values in [0..1] and divide everything by wh
 487
 488         // estimated average paragraph height:
 489         if (wh_ == 0)
 490                 wh_ = height_ / 4;
 491         int h = t.getPar(anchor_ref_).height();
 492
 493         // Normalize anchor/offset (MV):
 494         while (offset_ref_ > h && anchor_ref_ < parsize) {
 495                 anchor_ref_++;
 496                 offset_ref_ -= h;
 497                 h = t.getPar(anchor_ref_).height();
 498         }
 499         // Look at paragraph heights on-screen
 500         int sumh = 0;
 501         int nh = 0;
 502         for (lyx::pit_type pit = anchor_ref_; pit <= parsize; ++pit) {
 503                 if (sumh > height_)
 504                         break;
 505                 int const h2 = t.getPar(pit).height();
 506                 sumh += h2;
 507                 nh++;
 508         }
 509         int const hav = sumh / nh;
 510         // More realistic average paragraph height
 511         if (hav > wh_)
 512                 wh_ = hav;
 513
 514         scrollbarParameters_.height = (parsize + 1) * wh_;
 515         scrollbarParameters_.position = anchor_ref_ * wh_ + int(offset_ref_ * wh_ / float(h));
 516         scrollbarParameters_.lineScrollHeight = int(wh_ * defaultRowHeight() / float(h));
 517 }
 518
 519
 520 ScrollbarParameters const & BufferView::Pimpl::scrollbarParameters() const
 521 {
 522         return scrollbarParameters_;
 523 }
 524
 525
 526 void BufferView::Pimpl::scrollDocView(int value)
 527 {
 528         lyxerr[Debug::GUI] << BOOST_CURRENT_FUNCTION
 529                            << "[ value = " << value << "]" << endl;
 530
 531         if (!buffer_)
 532                 return;
 533
 534         owner_->gui().guiCursor().hide();
 535
 536         LyXText & t = *bv_->text();
 537
 538         float const bar = value / float(wh_ * t.paragraphs().size());
 539
 540         anchor_ref_ = int(bar * t.paragraphs().size());
 541         if (anchor_ref_ >  int(t.paragraphs().size()) - 1)
 542                 anchor_ref_ = int(t.paragraphs().size()) - 1;
 543         t.redoParagraph(anchor_ref_);
 544         int const h = t.getPar(anchor_ref_).height();
 545         offset_ref_ = int((bar * t.paragraphs().size() - anchor_ref_) * h);
 546         update();
 547
 548         if (!lyxrc.cursor_follows_scrollbar)
 549                 return;
 550
 551         int const height = 2 * defaultRowHeight();
 552         int const first = height;
 553         int const last = height_ - height;
 554         LCursor & cur = cursor_;
 555
 556         bv_funcs::CurStatus st = bv_funcs::status(bv_, cur);
 557
 558         switch (st) {
 559         case bv_funcs::CUR_ABOVE:
 560                 t.setCursorFromCoordinates(cur, 0, first);
 561                 cur.clearSelection();
 562                 break;
 563         case bv_funcs::CUR_BELOW:
 564                 t.setCursorFromCoordinates(cur, 0, last);
 565                 cur.clearSelection();
 566                 break;
 567         case bv_funcs::CUR_INSIDE:
 568                 int const y = bv_funcs::getPos(cur, cur.boundary()).y_;
 569                 int const newy = min(last, max(y, first));
 570                 if (y != newy) {
 571                         cur.reset(buffer_->inset());
 572                         t.setCursorFromCoordinates(cur, 0, newy);
 573                 }
 574         }
 575         owner_->updateLayoutChoice();
 576 }
 577
 578
 579 void BufferView::Pimpl::scroll(int /*lines*/)
 580 {
 581 //      if (!buffer_)
 582 //              return;
 583 //
 584 //      LyXText const * t = bv_->text();
 585 //      int const line_height = defaultRowHeight();
 586 //
 587 //      // The new absolute coordinate
 588 //      int new_top_y = top_y() + lines * line_height;
 589 //
 590 //      // Restrict to a valid value
 591 //      new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
 592 //      new_top_y = std::max(0, new_top_y);
 593 //
 594 //      scrollDocView(new_top_y);
 595 //
 596 //      // Update the scrollbar.
 597 //      workArea_->setScrollbarParams(t->height(), top_y(), defaultRowHeight());
 598 }
 599
 600
 601 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 602                                          key_modifier::state state)
 603 {
 604         owner_->getLyXFunc().processKeySym(key, state);
 605
 606         /* This is perhaps a bit of a hack. When we move
 607          * around, or type, it's nice to be able to see
 608          * the cursor immediately after the keypress. So
 609          * we reset the toggle timeout and force the visibility
 610          * of the cursor. Note we cannot do this inside
 611          * dispatch() itself, because that's called recursively.
 612          */
 613         if (available())
 614                 owner_->gui().guiCursor().show(*bv_);
 615 }
 616
 617
 618 void BufferView::Pimpl::selectionRequested()
 619 {
 620         static string sel;
 621
 622         if (!available())
 623                 return;
 624
 625         LCursor & cur = cursor_;
 626
 627         if (!cur.selection()) {
 628                 xsel_cache_.set = false;
 629                 return;
 630         }
 631
 632         if (!xsel_cache_.set ||
 633             cur.top() != xsel_cache_.cursor ||
 634             cur.anchor_.top() != xsel_cache_.anchor)
 635         {
 636                 xsel_cache_.cursor = cur.top();
 637                 xsel_cache_.anchor = cur.anchor_.top();
 638                 xsel_cache_.set = cur.selection();
 639                 sel = cur.selectionAsString(false);
 640                 if (!sel.empty())
 641                         clipboard().put(sel);
 642         }
 643 }
 644
 645
 646 void BufferView::Pimpl::selectionLost()
 647 {
 648         if (available()) {
 649                 owner_->gui().guiCursor().hide();
 650                 cursor_.clearSelection();
 651                 xsel_cache_.set = false;
 652         }
 653 }
 654
 655
 656 void BufferView::Pimpl::workAreaResize(int width, int height)
 657 {
 658         bool const widthChange = width != width_;
 659         bool const heightChange = height != height_;
 660
 661         // Update from work area
 662         width_ = width;
 663         height_ = height;
 664
 665         if (buffer_ && widthChange) {
 666                 // The visible LyXView need a resize
 667                 resizeCurrentBuffer();
 668         }
 669
 670         if (widthChange || heightChange)
 671                 update();
 672
 673         owner_->updateLayoutChoice();
 674 }
 675
 676
 677 bool BufferView::Pimpl::fitCursor()
 678 {
 679         if (bv_funcs::status(bv_, cursor_) == bv_funcs::CUR_INSIDE) {
 680                 LyXFont const font = cursor_.getFont();
 681                 int const asc = font_metrics::maxAscent(font);
 682                 int const des = font_metrics::maxDescent(font);
 683                 Point const p = bv_funcs::getPos(cursor_, cursor_.boundary());
 684                 if (p.y_ - asc >= 0 && p.y_ + des < height_)
 685                         return false;
 686         }
 687         center();
 688         return true;
 689 }
 690
 691
 692 bool BufferView::Pimpl::multiParSel()
 693 {
 694         if (!cursor_.selection())
 695                 return false;
 696         bool ret = multiparsel_cache_;
 697         multiparsel_cache_ = cursor_.selBegin().pit() != cursor_.selEnd().pit();
 698         // Either this, or previous selection spans paragraphs
 699         return ret || multiparsel_cache_;
 700 }
 701
 702
 703 void BufferView::Pimpl::update(Update::flags flags)
 704 {
 705         lyxerr[Debug::DEBUG]
 706                 << BOOST_CURRENT_FUNCTION
 707                 << "[fitcursor = " << (flags & Update::FitCursor)
 708                 << ", forceupdate = " << (flags & Update::Force)
 709                 << ", singlepar = " << (flags & Update::SinglePar)
 710                 << "]  buffer: " << buffer_ << endl;
 711
 712         // Check needed to survive LyX startup
 713         if (buffer_) {
 714                 // Update macro store
 715                 buffer_->buildMacros();
 716
 717                 CoordCache backup;
 718                 std::swap(theCoords, backup);
 719
 720                 // This, together with doneUpdating(), verifies (using
 721                 // asserts) that screen redraw is not called from
 722                 // within itself.
 723                 theCoords.startUpdating();
 724
 725                 // First drawing step
 726                 ViewMetricsInfo vi = metrics(flags & Update::SinglePar);
 727                 bool forceupdate(flags & (Update::Force | Update::SinglePar));
 728
 729                 if ((flags & Update::FitCursor) && fitCursor()) {
 730                         forceupdate = true;
 731                         vi = metrics();
 732                 }
 733                 if ((flags & Update::MultiParSel) && multiParSel()) {
 734                         forceupdate = true;
 735                         vi = metrics();
 736                 }
 737                 if (forceupdate) {
 738                         // Second drawing step
 739                         workArea_->redraw(*bv_, vi);
 740                 } else {
 741                         // Abort updating of the coord
 742                         // cache - just restore the old one
 743                         std::swap(theCoords, backup);
 744                 }
 745         } else
 746                 workArea_->greyOut();
 747
 748         owner_->view_state_changed();
 749 }
 750
 751
 752 // Callback for cursor timer
 753 void BufferView::Pimpl::cursorToggle()
 754 {
 755         if (buffer_) {
 756                 owner_->gui().guiCursor().toggle(*bv_);
 757
 758                 // Use this opportunity to deal with any child processes that
 759                 // have finished but are waiting to communicate this fact
 760                 // to the rest of LyX.
 761                 ForkedcallsController & fcc = ForkedcallsController::get();
 762                 fcc.handleCompletedProcesses();
 763         }
 764
 765         cursor_timeout.restart();
 766 }
 767
 768
 769 bool BufferView::Pimpl::available() const
 770 {
 771         return buffer_ && bv_->text();
 772 }
 773
 774
 775 Change const BufferView::Pimpl::getCurrentChange()
 776 {
 777         if (!buffer_->params().tracking_changes)
 778                 return Change(Change::UNCHANGED);
 779
 780         LyXText * text = bv_->getLyXText();
 781         LCursor & cur = cursor_;
 782
 783         if (!cur.selection())
 784                 return Change(Change::UNCHANGED);
 785
 786         return text->getPar(cur.selBegin().pit()).
 787                         lookupChange(cur.selBegin().pos());
 788 }
 789
 790
 791 void BufferView::Pimpl::savePosition(unsigned int i)
 792 {
 793         if (i >= saved_positions_num)
 794                 return;
 795         BOOST_ASSERT(cursor_.inTexted());
 796         saved_positions[i] = Position(buffer_->fileName(),
 797                                       cursor_.paragraph().id(),
 798                                       cursor_.pos());
 799         if (i > 0)
 800                 owner_->message(bformat(_("Saved bookmark %1$d"), i));
 801 }
 802
 803
 804 void BufferView::Pimpl::restorePosition(unsigned int i)
 805 {
 806         if (i >= saved_positions_num)
 807                 return;
 808
 809         string const fname = saved_positions[i].filename;
 810
 811         cursor_.clearSelection();
 812
 813         if (fname != buffer_->fileName()) {
 814                 Buffer * b = 0;
 815                 if (bufferlist.exists(fname))
 816                         b = bufferlist.getBuffer(fname);
 817                 else {
 818                         b = bufferlist.newBuffer(fname);
 819                         // Don't ask, just load it
 820                         ::loadLyXFile(b, fname);
 821                 }
 822                 if (b)
 823                         setBuffer(b);
 824         }
 825
 826         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 827         if (par == buffer_->par_iterator_end())
 828                 return;
 829
 830         bv_->setCursor(makeDocIterator(par, min(par->size(), saved_positions[i].par_pos)));
 831
 832         if (i > 0)
 833                 owner_->message(bformat(_("Moved to bookmark %1$d"), i));
 834 }
 835
 836
 837 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 838 {
 839         return i < saved_positions_num && !saved_positions[i].filename.empty();
 840 }
 841
 842
 843 void BufferView::Pimpl::saveSavedPositions()
 844 {
 845         // save bookmarks. It is better to use the pit interface
 846         // but I do not know how to effectively convert between
 847         // par_id and pit.
 848         for (unsigned int i=1; i < saved_positions_num; ++i) {
 849                 if ( isSavedPosition(i) )
 850                         LyX::ref().session().saveBookmark( boost::tie(
 851                                 i,
 852                                 saved_positions[i].filename,
 853                                 saved_positions[i].par_id,
 854                                 saved_positions[i].par_pos) );
 855         }
 856 }
 857
 858
 859 void BufferView::Pimpl::switchKeyMap()
 860 {
 861         if (!lyxrc.rtl_support)
 862                 return;
 863
 864         Intl & intl = owner_->getIntl();
 865         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 866                 if (intl.keymap == Intl::PRIMARY)
 867                         intl.keyMapSec();
 868         } else {
 869                 if (intl.keymap == Intl::SECONDARY)
 870                         intl.keyMapPrim();
 871         }
 872 }
 873
 874
 875 void BufferView::Pimpl::center()
 876 {
 877         CursorSlice & bot = cursor_.bottom();
 878         lyx::pit_type const pit = bot.pit();
 879         bot.text()->redoParagraph(pit);
 880         Paragraph const & par = bot.text()->paragraphs()[pit];
 881         anchor_ref_ = pit;
 882         offset_ref_ = bv_funcs::coordOffset(cursor_, cursor_.boundary()).y_
 883                 + par.ascent() - height_ / 2;
 884 }
 885
 886
 887 void BufferView::Pimpl::stuffClipboard(string const & content) const
 888 {
 889         clipboard().put(content);
 890 }
 891
 892
 893 void BufferView::Pimpl::menuInsertLyXFile(string const & filenm)
 894 {
 895         BOOST_ASSERT(cursor_.inTexted());
 896         string filename = filenm;
 897
 898         if (filename.empty()) {
 899                 // Launch a file browser
 900                 string initpath = lyxrc.document_path;
 901
 902                 if (available()) {
 903                         string const trypath = owner_->buffer()->filePath();
 904                         // If directory is writeable, use this as default.
 905                         if (isDirWriteable(trypath))
 906                                 initpath = trypath;
 907                 }
 908
 909                 FileDialog fileDlg(_("Select LyX document to insert"),
 910                         LFUN_FILE_INSERT,
 911                         make_pair(string(_("Documents|#o#O")),
 912                                   string(lyxrc.document_path)),
 913                         make_pair(string(_("Examples|#E#e")),
 914                                   string(addPath(package().system_support(), "examples"))));
 915
 916                 FileDialog::Result result =
 917                         fileDlg.open(initpath,
 918                                      FileFilterList(_("LyX Documents (*.lyx)")),
 919                                      string());
 920
 921                 if (result.first == FileDialog::Later)
 922                         return;
 923
 924                 filename = result.second;
 925
 926                 // check selected filename
 927                 if (filename.empty()) {
 928                         owner_->message(_("Canceled."));
 929                         return;
 930                 }
 931         }
 932
 933         // Get absolute path of file and add ".lyx"
 934         // to the filename if necessary
 935         filename = fileSearch(string(), filename, "lyx");
 936
 937         string const disp_fn = makeDisplayPath(filename);
 938         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 939
 940         string res;
 941         Buffer buf("", false);
 942         buf.error.connect(boost::bind(&BufferView::Pimpl::addError, this, _1));
 943         if (::loadLyXFile(&buf, makeAbsPath(filename))) {
 944                 lyx::cap::pasteParagraphList(cursor_, buf.paragraphs(),
 945                                              buf.params().textclass);
 946                 res = _("Document %1$s inserted.");
 947         } else
 948                 res = _("Could not insert document %1$s");
 949
 950         owner_->message(bformat(res, disp_fn));
 951         bv_->showErrorList(_("Document insertion"));
 952         resizeCurrentBuffer();
 953 }
 954
 955
 956 void BufferView::Pimpl::trackChanges()
 957 {
 958         bool const tracking = buffer_->params().tracking_changes;
 959
 960         if (!tracking) {
 961                 for_each(buffer_->par_iterator_begin(),
 962                          buffer_->par_iterator_end(),
 963                          bind(&Paragraph::trackChanges, _1, Change::UNCHANGED));
 964                 buffer_->params().tracking_changes = true;
 965
 966                 // We cannot allow undos beyond the freeze point
 967                 buffer_->undostack().clear();
 968         } else {
 969                 cursor_.setCursor(doc_iterator_begin(buffer_->inset()));
 970                 if (lyx::find::findNextChange(bv_)) {
 971                         owner_->getDialogs().show("changes");
 972                         return;
 973                 }
 974
 975                 for_each(buffer_->par_iterator_begin(),
 976                          buffer_->par_iterator_end(),
 977                          mem_fun_ref(&Paragraph::untrackChanges));
 978
 979                 buffer_->params().tracking_changes = false;
 980         }
 981
 982         buffer_->redostack().clear();
 983 }
 984
 985
 986 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd0)
 987 {
 988         //lyxerr << BOOST_CURRENT_FUNCTION << "[ cmd0 " << cmd0 << "]" << endl;
 989
 990         // This is only called for mouse related events including
 991         // LFUN_FILE_OPEN generated by drag-and-drop.
 992         FuncRequest cmd = cmd0;
 993
 994         // Handle drag&drop
 995         if (cmd.action == LFUN_FILE_OPEN) {
 996                 owner_->dispatch(cmd);
 997                 return true;
 998         }
 999
1000         if (!buffer_)
1001                 return false;
1002
1003         LCursor cur(*bv_);
1004         cur.push(buffer_->inset());
1005         cur.selection() = cursor_.selection();
1006
1007         // Doesn't go through lyxfunc, so we need to update
1008         // the layout choice etc. ourselves
1009
1010         // E.g. Qt mouse press when no buffer
1011         if (!available())
1012                 return false;
1013
1014         owner_->gui().guiCursor().hide();
1015
1016         // Either the inset under the cursor or the
1017         // surrounding LyXText will handle this event.
1018
1019         // Build temporary cursor.
1020         cmd.y = min(max(cmd.y, -1), height_);
1021         InsetBase * inset = bv_->text()->editXY(cur, cmd.x, cmd.y);
1022         //lyxerr << BOOST_CURRENT_FUNCTION
1023         //       << " * hit inset at tip: " << inset << endl;
1024         //lyxerr << BOOST_CURRENT_FUNCTION
1025         //       << " * created temp cursor:" << cur << endl;
1026
1027         // Put anchor at the same position.
1028         cur.resetAnchor();
1029
1030         // Try to dispatch to an non-editable inset near this position
1031         // via the temp cursor. If the inset wishes to change the real
1032         // cursor it has to do so explicitly by using
1033         //  cur.bv().cursor() = cur;  (or similar)
1034         if (inset)
1035                 inset->dispatch(cur, cmd);
1036
1037         // Now dispatch to the temporary cursor. If the real cursor should
1038         // be modified, the inset's dispatch has to do so explicitly.
1039         if (!cur.result().dispatched())
1040                 cur.dispatch(cmd);
1041
1042         if (cur.result().dispatched()) {
1043                 // Redraw if requested or necessary.
1044                 if (cur.result().update())
1045                         update(Update::FitCursor | Update::Force);
1046                 else
1047                         update(Update::FitCursor | Update::MultiParSel);
1048         }
1049
1050         // See workAreaKeyPress
1051         cursor_timeout.restart();
1052         owner_->gui().guiCursor().show(*bv_);
1053
1054         // Skip these when selecting
1055         if (cmd.action != LFUN_MOUSE_MOTION) {
1056                 owner_->updateLayoutChoice();
1057                 owner_->updateToolbars();
1058         }
1059
1060         // Slight hack: this is only called currently when we
1061         // clicked somewhere, so we force through the display
1062         // of the new status here.
1063         owner_->clearMessage();
1064         return true;
1065 }
1066
1067
1068 FuncStatus BufferView::Pimpl::getStatus(FuncRequest const & cmd)
1069 {
1070         FuncStatus flag;
1071
1072         switch (cmd.action) {
1073
1074         case LFUN_UNDO:
1075                 flag.enabled(!buffer_->undostack().empty());
1076                 break;
1077         case LFUN_REDO:
1078                 flag.enabled(!buffer_->redostack().empty());
1079                 break;
1080         case LFUN_FILE_INSERT:
1081         case LFUN_FILE_INSERT_ASCII_PARA:
1082         case LFUN_FILE_INSERT_ASCII:
1083         case LFUN_BOOKMARK_SAVE:
1084                 // FIXME: Actually, these LFUNS should be moved to LyXText
1085                 flag.enabled(cursor_.inTexted());
1086                 break;
1087         case LFUN_FONT_STATE:
1088         case LFUN_LABEL_INSERT:
1089         case LFUN_PARAGRAPH_GOTO:
1090         // FIXME handle non-trivially
1091         case LFUN_OUTLINE_UP:
1092         case LFUN_OUTLINE_DOWN:
1093         case LFUN_OUTLINE_IN:
1094         case LFUN_OUTLINE_OUT:
1095         case LFUN_ERROR_NEXT:
1096         case LFUN_NOTE_NEXT:
1097         case LFUN_REFERENCE_NEXT:
1098         case LFUN_WORD_FIND:
1099         case LFUN_WORD_REPLACE:
1100         case LFUN_MARK_OFF:
1101         case LFUN_MARK_ON:
1102         case LFUN_MARK_TOGGLE:
1103         case LFUN_SCREEN_RECENTER:
1104         case LFUN_BIBTEX_DATABASE_ADD:
1105         case LFUN_BIBTEX_DATABASE_DEL:
1106         case LFUN_WORDS_COUNT:
1107                 flag.enabled(true);
1108                 break;
1109
1110         case LFUN_LABEL_GOTO: {
1111                 flag.enabled(!cmd.argument.empty()
1112                     || getInsetByCode<InsetRef>(cursor_, InsetBase::REF_CODE));
1113                 break;
1114         }
1115
1116         case LFUN_BOOKMARK_GOTO:
1117                 flag.enabled(isSavedPosition(convert<unsigned int>(cmd.argument)));
1118                 break;
1119         case LFUN_CHANGES_TRACK:
1120                 flag.enabled(true);
1121                 flag.setOnOff(buffer_->params().tracking_changes);
1122                 break;
1123
1124         case LFUN_CHANGES_OUTPUT: {
1125                 OutputParams runparams;
1126                 LaTeXFeatures features(*buffer_, buffer_->params(), runparams);
1127                 flag.enabled(buffer_ && buffer_->params().tracking_changes
1128                         && features.isAvailable("dvipost"));
1129                 flag.setOnOff(buffer_->params().output_changes);
1130                 break;
1131         }
1132
1133         case LFUN_CHANGES_MERGE:
1134         case LFUN_CHANGE_ACCEPT: // what about these two
1135         case LFUN_CHANGE_REJECT: // what about these two
1136         case LFUN_ALL_CHANGES_ACCEPT:
1137         case LFUN_ALL_CHANGES_REJECT:
1138                 flag.enabled(buffer_ && buffer_->params().tracking_changes);
1139                 break;
1140
1141         case LFUN_BUFFER_TOGGLE_COMPRESSION: {
1142                 flag.setOnOff(buffer_->params().compressed);
1143                 break;
1144         }
1145
1146         default:
1147                 flag.enabled(false);
1148         }
1149
1150         return flag;
1151 }
1152
1153
1154
1155 bool BufferView::Pimpl::dispatch(FuncRequest const & cmd)
1156 {
1157         //lyxerr << BOOST_CURRENT_FUNCTION
1158         //       << [ cmd = " << cmd << "]" << endl;
1159
1160         // Make sure that the cached BufferView is correct.
1161         lyxerr[Debug::ACTION] << BOOST_CURRENT_FUNCTION
1162                 << " action[" << cmd.action << ']'
1163                 << " arg[" << cmd.argument << ']'
1164                 << " x[" << cmd.x << ']'
1165                 << " y[" << cmd.y << ']'
1166                 << " button[" << cmd.button() << ']'
1167                 << endl;
1168
1169         LCursor & cur = cursor_;
1170
1171         switch (cmd.action) {
1172
1173         case LFUN_UNDO:
1174                 if (available()) {
1175                         cur.message(_("Undo"));
1176                         cur.clearSelection();
1177                         if (!textUndo(*bv_))
1178                                 cur.message(_("No further undo information"));
1179                         update();
1180                         switchKeyMap();
1181                 }
1182                 break;
1183
1184         case LFUN_REDO:
1185                 if (available()) {
1186                         cur.message(_("Redo"));
1187                         cur.clearSelection();
1188                         if (!textRedo(*bv_))
1189                                 cur.message(_("No further redo information"));
1190                         update();
1191                         switchKeyMap();
1192                 }
1193                 break;
1194
1195         case LFUN_FILE_INSERT:
1196                 menuInsertLyXFile(cmd.argument);
1197                 break;
1198
1199         case LFUN_FILE_INSERT_ASCII_PARA:
1200                 insertAsciiFile(bv_, cmd.argument, true);
1201                 break;
1202
1203         case LFUN_FILE_INSERT_ASCII:
1204                 insertAsciiFile(bv_, cmd.argument, false);
1205                 break;
1206
1207         case LFUN_FONT_STATE:
1208                 cur.message(cur.currentState());
1209                 break;
1210
1211         case LFUN_BOOKMARK_SAVE:
1212                 savePosition(convert<unsigned int>(cmd.argument));
1213                 break;
1214
1215         case LFUN_BOOKMARK_GOTO:
1216                 restorePosition(convert<unsigned int>(cmd.argument));
1217                 break;
1218
1219         case LFUN_LABEL_GOTO: {
1220                 string label = cmd.argument;
1221                 if (label.empty()) {
1222                         InsetRef * inset =
1223                                 getInsetByCode<InsetRef>(cursor_,
1224                                                          InsetBase::REF_CODE);
1225                         if (inset) {
1226                                 label = inset->getContents();
1227                                 savePosition(0);
1228                         }
1229                 }
1230
1231                 if (!label.empty())
1232                         bv_->gotoLabel(label);
1233                 break;
1234         }
1235
1236         case LFUN_PARAGRAPH_GOTO: {
1237                 int const id = convert<int>(cmd.argument);
1238                 ParIterator par = buffer_->getParFromID(id);
1239                 if (par == buffer_->par_iterator_end()) {
1240                         lyxerr[Debug::INFO] << "No matching paragraph found! ["
1241                                             << id << ']' << endl;
1242                         break;
1243                 } else {
1244                         lyxerr[Debug::INFO] << "Paragraph " << par->id()
1245                                             << " found." << endl;
1246                 }
1247
1248                 // Set the cursor
1249                 bv_->setCursor(makeDocIterator(par, 0));
1250
1251                 update();
1252                 switchKeyMap();
1253                 break;
1254         }
1255
1256         case LFUN_OUTLINE_UP:
1257                 lyx::toc::outline(lyx::toc::Up, cursor_);
1258                 cursor_.text()->setCursor(cursor_, cursor_.pit(), 0);
1259                 updateLabels(*buffer_);
1260                 break;
1261         case LFUN_OUTLINE_DOWN:
1262                 lyx::toc::outline(lyx::toc::Down, cursor_);
1263                 cursor_.text()->setCursor(cursor_, cursor_.pit(), 0);
1264                 updateLabels(*buffer_);
1265                 break;
1266         case LFUN_OUTLINE_IN:
1267                 lyx::toc::outline(lyx::toc::In, cursor_);
1268                 updateLabels(*buffer_);
1269                 break;
1270         case LFUN_OUTLINE_OUT:
1271                 lyx::toc::outline(lyx::toc::Out, cursor_);
1272                 updateLabels(*buffer_);
1273                 break;
1274
1275         case LFUN_ERROR_NEXT:
1276                 bv_funcs::gotoInset(bv_, InsetBase::ERROR_CODE, false);
1277                 break;
1278
1279         case LFUN_NOTE_NEXT:
1280                 bv_funcs::gotoInset(bv_, InsetBase::NOTE_CODE, false);
1281                 break;
1282
1283         case LFUN_REFERENCE_NEXT: {
1284                 vector<InsetBase_code> tmp;
1285                 tmp.push_back(InsetBase::LABEL_CODE);
1286                 tmp.push_back(InsetBase::REF_CODE);
1287                 bv_funcs::gotoInset(bv_, tmp, true);
1288                 break;
1289         }
1290
1291         case LFUN_CHANGES_TRACK:
1292                 trackChanges();
1293                 break;
1294
1295         case LFUN_CHANGES_OUTPUT: {
1296                 bool const state = buffer_->params().output_changes;
1297                 buffer_->params().output_changes = !state;
1298                 break;
1299         }
1300
1301         case LFUN_CHANGES_MERGE:
1302                 if (lyx::find::findNextChange(bv_))
1303                         owner_->getDialogs().show("changes");
1304                 break;
1305
1306         case LFUN_ALL_CHANGES_ACCEPT: {
1307                 cursor_.reset(buffer_->inset());
1308 #ifdef WITH_WARNINGS
1309 #warning FIXME changes
1310 #endif
1311                 while (lyx::find::findNextChange(bv_))
1312                         bv_->getLyXText()->acceptChange(cursor_);
1313                 update();
1314                 break;
1315         }
1316
1317         case LFUN_ALL_CHANGES_REJECT: {
1318                 cursor_.reset(buffer_->inset());
1319 #ifdef WITH_WARNINGS
1320 #warning FIXME changes
1321 #endif
1322                 while (lyx::find::findNextChange(bv_))
1323                         bv_->getLyXText()->rejectChange(cursor_);
1324                 break;
1325         }
1326
1327         case LFUN_WORD_FIND:
1328                 lyx::find::find(bv_, cmd);
1329                 break;
1330
1331         case LFUN_WORD_REPLACE:
1332                 lyx::find::replace(bv_, cmd);
1333                 break;
1334
1335         case LFUN_MARK_OFF:
1336                 cur.clearSelection();
1337                 cur.resetAnchor();
1338                 cur.message(N_("Mark off"));
1339                 break;
1340
1341         case LFUN_MARK_ON:
1342                 cur.clearSelection();
1343                 cur.mark() = true;
1344                 cur.resetAnchor();
1345                 cur.message(N_("Mark on"));
1346                 break;
1347
1348         case LFUN_MARK_TOGGLE:
1349                 cur.clearSelection();
1350                 if (cur.mark()) {
1351                         cur.mark() = false;
1352                         cur.message(N_("Mark removed"));
1353                 } else {
1354                         cur.mark() = true;
1355                         cur.message(N_("Mark set"));
1356                 }
1357                 cur.resetAnchor();
1358                 break;
1359
1360         case LFUN_SCREEN_RECENTER:
1361                 center();
1362                 break;
1363
1364         case LFUN_BIBTEX_DATABASE_ADD: {
1365                 LCursor tmpcur = cursor_;
1366                 bv_funcs::findInset(tmpcur, InsetBase::BIBTEX_CODE, false);
1367                 InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
1368                                                 InsetBase::BIBTEX_CODE);
1369                 if (inset) {
1370                         if (inset->addDatabase(cmd.argument))
1371                                 buffer_->updateBibfilesCache();
1372                 }
1373                 break;
1374         }
1375
1376         case LFUN_BIBTEX_DATABASE_DEL: {
1377                 LCursor tmpcur = cursor_;
1378                 bv_funcs::findInset(tmpcur, InsetBase::BIBTEX_CODE, false);
1379                 InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
1380                                                 InsetBase::BIBTEX_CODE);
1381                 if (inset) {
1382                         if (inset->delDatabase(cmd.argument))
1383                                 buffer_->updateBibfilesCache();
1384                 }
1385                 break;
1386         }
1387
1388         case LFUN_WORDS_COUNT: {
1389                 DocIterator from, to;
1390                 if (cur.selection()) {
1391                         from = cur.selectionBegin();
1392                         to = cur.selectionEnd();
1393                 } else {
1394                         from = doc_iterator_begin(buffer_->inset());
1395                         to = doc_iterator_end(buffer_->inset());
1396                 }
1397                 int const count = countWords(from, to);
1398                 string message;
1399                 if (count != 1) {
1400                         if (cur.selection())
1401                                 message = bformat(_("%1$d words in selection."),
1402                                           count);
1403                                 else
1404                                         message = bformat(_("%1$d words in document."),
1405                                                           count);
1406                 }
1407                 else {
1408                         if (cur.selection())
1409                                 message = _("One word in selection.");
1410                         else
1411                                 message = _("One word in document.");
1412                 }
1413
1414                 Alert::information(_("Count words"), message);
1415         }
1416                 break;
1417
1418         case LFUN_BUFFER_TOGGLE_COMPRESSION:
1419                 // turn compression on/off
1420                 buffer_->params().compressed = !buffer_->params().compressed;
1421                 break;
1422
1423         default:
1424                 return false;
1425         }
1426
1427         return true;
1428 }
1429
1430
1431 ViewMetricsInfo BufferView::Pimpl::metrics(bool singlepar)
1432 {
1433         // Remove old position cache
1434         theCoords.clear();
1435         BufferView & bv = *bv_;
1436         LyXText * const text = bv.text();
1437         lyx::pit_type size = int(text->paragraphs().size());
1438
1439         if (anchor_ref_ > int(text->paragraphs().size() - 1)) {
1440                 anchor_ref_ = int(text->paragraphs().size() - 1);
1441                 offset_ref_ = 0;
1442         }
1443
1444         lyx::pit_type const pit = anchor_ref_;
1445         int pit1 = pit;
1446         int pit2 = pit;
1447         size_t const npit = text->paragraphs().size();
1448
1449         // Rebreak anchor paragraph. In Single Paragraph mode, rebreak only
1450         // the (main text, not inset!) paragraph containing the cursor.
1451         // (if this paragraph contains insets etc., rebreaking will
1452         // recursively descend)
1453         if (!singlepar || pit == cursor_.bottom().pit())
1454                 text->redoParagraph(pit);
1455         int y0 = text->getPar(pit).ascent() - offset_ref_;
1456
1457         // Redo paragraphs above anchor if necessary; again, in Single Par
1458         // mode, only if we encounter the (main text) one having the cursor.
1459         int y1 = y0;
1460         while (y1 > 0 && pit1 > 0) {
1461                 y1 -= text->getPar(pit1).ascent();
1462                 --pit1;
1463                 if (!singlepar || pit1 == cursor_.bottom().pit())
1464                         text->redoParagraph(pit1);
1465                 y1 -= text->getPar(pit1).descent();
1466         }
1467
1468
1469         // Take care of ascent of first line
1470         y1 -= text->getPar(pit1).ascent();
1471
1472         // Normalize anchor for next time
1473         anchor_ref_ = pit1;
1474         offset_ref_ = -y1;
1475
1476         // Grey at the beginning is ugly
1477         if (pit1 == 0 && y1 > 0) {
1478                 y0 -= y1;
1479                 y1 = 0;
1480                 anchor_ref_ = 0;
1481         }
1482
1483         // Redo paragraphs below the anchor if necessary. Single par mode:
1484         // only the one containing the cursor if encountered.
1485         int y2 = y0;
1486         while (y2 < bv.workHeight() && pit2 < int(npit) - 1) {
1487                 y2 += text->getPar(pit2).descent();
1488                 ++pit2;
1489                 if (!singlepar || pit2 == cursor_.bottom().pit())
1490                         text->redoParagraph(pit2);
1491                 y2 += text->getPar(pit2).ascent();
1492         }
1493
1494         // Take care of descent of last line
1495         y2 += text->getPar(pit2).descent();
1496
1497         // The coordinates of all these paragraphs are correct, cache them
1498         int y = y1;
1499         for (lyx::pit_type pit = pit1; pit <= pit2; ++pit) {
1500                 y += text->getPar(pit).ascent();
1501                 theCoords.parPos()[text][pit] = Point(0, y);
1502                 if (singlepar && pit == cursor_.bottom().pit()) {
1503                         // In Single Paragraph mode, collect here the
1504                         // y1 and y2 of the (one) paragraph the cursor is in
1505                         y1 = y - text->getPar(pit).ascent();
1506                         y2 = y + text->getPar(pit).descent();
1507                 }
1508                 y += text->getPar(pit).descent();
1509         }
1510
1511         if (singlepar) {
1512                 // collect cursor paragraph iter bounds
1513                 pit1 = cursor_.bottom().pit();
1514                 pit2 = cursor_.bottom().pit();
1515         }
1516
1517         lyxerr[Debug::DEBUG]
1518                 << BOOST_CURRENT_FUNCTION
1519                 << " y1: " << y1
1520                 << " y2: " << y2
1521                 << " pit1: " << pit1
1522                 << " pit2: " << pit2
1523                 << " npit: " << npit
1524                 << " singlepar: " << singlepar
1525                 << "size: " << size
1526                 << endl;
1527
1528         return ViewMetricsInfo(pit1, pit2, y1, y2, singlepar, size);
1529 }