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