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