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 "debug.h"
  29 #include "dispatchresult.h"
  30 #include "factory.h"
  31 #include "FloatList.h"
  32 #include "funcrequest.h"
  33 #include "FuncStatus.h"
  34 #include "gettext.h"
  35 #include "intl.h"
  36 #include "insetiterator.h"
  37 #include "LaTeXFeatures.h"
  38 #include "lyx_cb.h" // added for Dispatch functions
  39 #include "lyx_main.h"
  40 #include "lyxfind.h"
  41 #include "lyxfunc.h"
  42 #include "lyxtext.h"
  43 #include "lyxrc.h"
  44 #include "lastfiles.h"
  45 #include "metricsinfo.h"
  46 #include "paragraph.h"
  47 #include "paragraph_funcs.h"
  48 #include "ParagraphParameters.h"
  49 #include "pariterator.h"
  50 #include "rowpainter.h"
  51 #include "undo.h"
  52 #include "vspace.h"
  53
  54 #include "insets/insetbibtex.h"
  55 #include "insets/insetref.h"
  56 #include "insets/insettext.h"
  57
  58 #include "frontends/Alert.h"
  59 #include "frontends/Dialogs.h"
  60 #include "frontends/FileDialog.h"
  61 #include "frontends/font_metrics.h"
  62 #include "frontends/LyXView.h"
  63 #include "frontends/LyXScreenFactory.h"
  64 #include "frontends/screen.h"
  65 #include "frontends/WorkArea.h"
  66 #include "frontends/WorkAreaFactory.h"
  67
  68 #include "graphics/Previews.h"
  69
  70 #include "support/convert.h"
  71 #include "support/filefilterlist.h"
  72 #include "support/filetools.h"
  73 #include "support/forkedcontr.h"
  74 #include "support/package.h"
  75 #include "support/types.h"
  76
  77 #include <boost/bind.hpp>
  78 #include <boost/current_function.hpp>
  79
  80 #include <functional>
  81 #include <vector>
  82
  83 using lyx::pos_type;
  84
  85 using lyx::support::AddPath;
  86 using lyx::support::bformat;
  87 using lyx::support::FileFilterList;
  88 using lyx::support::FileSearch;
  89 using lyx::support::ForkedcallsController;
  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
 105 extern BufferList bufferlist;
 106
 107
 108 namespace {
 109
 110 unsigned int const saved_positions_num = 20;
 111
 112 // All the below connection objects are needed because of a bug in some
 113 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
 114 // to these connections we avoid a segfault upon startup, and also at exit.
 115 // (Lgb)
 116
 117 boost::signals::connection dispatchcon;
 118 boost::signals::connection timecon;
 119 boost::signals::connection doccon;
 120 boost::signals::connection resizecon;
 121 boost::signals::connection kpresscon;
 122 boost::signals::connection selectioncon;
 123 boost::signals::connection lostcon;
 124
 125
 126 /// Return an inset of this class if it exists at the current cursor position
 127 template <class T>
 128 T * getInsetByCode(LCursor & cur, InsetBase::Code code)
 129 {
 130         T * inset = 0;
 131         DocIterator it = cur;
 132         if (it.nextInset() &&
 133             it.nextInset()->lyxCode() == code) {
 134                 inset = static_cast<T*>(it.nextInset());
 135         }
 136         return inset;
 137 }
 138
 139 } // anon namespace
 140
 141
 142 BufferView::Pimpl::Pimpl(BufferView & bv, LyXView * owner,
 143                          int width, int height)
 144         : bv_(&bv), owner_(owner), buffer_(0), cursor_timeout(400),
 145           using_xterm_cursor(false), cursor_(bv) ,
 146           anchor_ref_(0), offset_ref_(0)
 147 {
 148         xsel_cache_.set = false;
 149
 150         workarea_.reset(WorkAreaFactory::create(*owner_, width, height));
 151         screen_.reset(LyXScreenFactory::create(workarea()));
 152
 153         // Setup the signals
 154         doccon = workarea().scrollDocView
 155                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 156         resizecon = workarea().workAreaResize
 157                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 158         dispatchcon = workarea().dispatch
 159                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 160         kpresscon = workarea().workAreaKeyPress
 161                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 162         selectioncon = workarea().selectionRequested
 163                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 164         lostcon = workarea().selectionLost
 165                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 166
 167         timecon = cursor_timeout.timeout
 168                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 169         cursor_timeout.start();
 170         saved_positions.resize(saved_positions_num);
 171 }
 172
 173
 174 void BufferView::Pimpl::addError(ErrorItem const & ei)
 175 {
 176         errorlist_.push_back(ei);
 177 }
 178
 179
 180 void BufferView::Pimpl::showReadonly(bool)
 181 {
 182         owner_->updateWindowTitle();
 183         owner_->getDialogs().updateBufferDependent(false);
 184 }
 185
 186
 187 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 188 {
 189         if (errorConnection_.connected())
 190                 disconnectBuffer();
 191
 192         errorConnection_ =
 193                 buf.error.connect(
 194                         boost::bind(&BufferView::Pimpl::addError, this, _1));
 195
 196         messageConnection_ =
 197                 buf.message.connect(
 198                         boost::bind(&LyXView::message, owner_, _1));
 199
 200         busyConnection_ =
 201                 buf.busy.connect(
 202                         boost::bind(&LyXView::busy, owner_, _1));
 203
 204         titleConnection_ =
 205                 buf.updateTitles.connect(
 206                         boost::bind(&LyXView::updateWindowTitle, owner_));
 207
 208         timerConnection_ =
 209                 buf.resetAutosaveTimers.connect(
 210                         boost::bind(&LyXView::resetAutosaveTimer, owner_));
 211
 212         readonlyConnection_ =
 213                 buf.readonly.connect(
 214                         boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 215
 216         closingConnection_ =
 217                 buf.closing.connect(
 218                         boost::bind(&BufferView::Pimpl::setBuffer, this, (Buffer *)0));
 219 }
 220
 221
 222 void BufferView::Pimpl::disconnectBuffer()
 223 {
 224         errorConnection_.disconnect();
 225         messageConnection_.disconnect();
 226         busyConnection_.disconnect();
 227         titleConnection_.disconnect();
 228         timerConnection_.disconnect();
 229         readonlyConnection_.disconnect();
 230         closingConnection_.disconnect();
 231 }
 232
 233
 234 void BufferView::Pimpl::newFile(string const & filename, string const & tname,
 235         bool isNamed)
 236 {
 237         setBuffer(::newFile(filename, tname, isNamed));
 238 }
 239
 240
 241 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 242 {
 243         // Get absolute path of file and add ".lyx"
 244         // to the filename if necessary
 245         string s = FileSearch(string(), filename, "lyx");
 246
 247         bool const found = !s.empty();
 248
 249         if (!found)
 250                 s = filename;
 251
 252         // File already open?
 253         if (bufferlist.exists(s)) {
 254                 string const file = MakeDisplayPath(s, 20);
 255                 string text = bformat(_("The document %1$s is already "
 256                                         "loaded.\n\nDo you want to revert "
 257                                         "to the saved version?"), file);
 258                 int const ret = Alert::prompt(_("Revert to saved document?"),
 259                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 260
 261                 if (ret != 0) {
 262                         setBuffer(bufferlist.getBuffer(s));
 263                         return true;
 264                 }
 265                 // FIXME: should be LFUN_REVERT
 266                 if (!bufferlist.close(bufferlist.getBuffer(s), false))
 267                         return false;
 268                 // Fall through to new load. (Asger)
 269         }
 270
 271         Buffer * b;
 272
 273         if (found) {
 274                 b = bufferlist.newBuffer(s);
 275                 connectBuffer(*b);
 276                 if (!::loadLyXFile(b, s)) {
 277                         bufferlist.release(b);
 278                         return false;
 279                 }
 280         } else {
 281                 string text = bformat(_("The document %1$s does not yet "
 282                                         "exist.\n\nDo you want to create "
 283                                         "a new document?"), s);
 284                 int const ret = Alert::prompt(_("Create new document?"),
 285                          text, 0, 1, _("&Create"), _("Cancel"));
 286
 287                 if (ret == 0)
 288                         b = ::newFile(s, string(), true);
 289                 else
 290                         return false;
 291         }
 292
 293         setBuffer(b);
 294         bv_->showErrorList(_("Parse"));
 295
 296         if (tolastfiles)
 297                 LyX::ref().lastfiles().newFile(b->fileName());
 298
 299         return true;
 300 }
 301
 302
 303 WorkArea & BufferView::Pimpl::workarea() const
 304 {
 305         return *workarea_.get();
 306 }
 307
 308
 309 LyXScreen & BufferView::Pimpl::screen() const
 310 {
 311         return *screen_.get();
 312 }
 313
 314
 315 Painter & BufferView::Pimpl::painter() const
 316 {
 317         return workarea().getPainter();
 318 }
 319
 320
 321 void BufferView::Pimpl::setBuffer(Buffer * b)
 322 {
 323         lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 324                             << "[ b = " << b << "]" << endl;
 325
 326         if (buffer_)
 327                 disconnectBuffer();
 328
 329         // If we are closing current buffer, switch to the first in
 330         // buffer list.
 331         if (!b) {
 332                 lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 333                                     << " No Buffer!" << endl;
 334                 // We are closing the buffer, use the first buffer as current
 335                 buffer_ = bufferlist.first();
 336                 owner_->getDialogs().hideBufferDependent();
 337         } else {
 338                 // Set current buffer
 339                 buffer_ = b;
 340         }
 341
 342         // Reset old cursor
 343         cursor_ = LCursor(*bv_);
 344         anchor_ref_ = 0;
 345         offset_ref_ = 0;
 346
 347
 348         // If we're quitting lyx, don't bother updating stuff
 349         if (quitting)
 350                 return;
 351
 352         if (buffer_) {
 353                 lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 354                                     << "Buffer addr: " << buffer_ << endl;
 355                 connectBuffer(*buffer_);
 356
 357                 cursor_.push(buffer_->inset());
 358                 cursor_.resetAnchor();
 359                 buffer_->text().init(bv_);
 360                 buffer_->text().setCurrentFont(cursor_);
 361
 362                 // Buffer-dependent dialogs should be updated or
 363                 // hidden. This should go here because some dialogs (eg ToC)
 364                 // require bv_->text.
 365                 owner_->getDialogs().updateBufferDependent(true);
 366         }
 367
 368         update();
 369         updateScrollbar();
 370         owner_->updateMenubar();
 371         owner_->updateToolbars();
 372         owner_->updateLayoutChoice();
 373         owner_->updateWindowTitle();
 374
 375         // This is done after the layout combox has been populated
 376         if (buffer_)
 377                 owner_->setLayout(cursor_.paragraph().layout()->name());
 378
 379         if (buffer_ && lyx::graphics::Previews::status() != LyXRC::PREVIEW_OFF)
 380                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 381 }
 382
 383
 384 void BufferView::Pimpl::resizeCurrentBuffer()
 385 {
 386         lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION << endl;
 387         owner_->busy(true);
 388         owner_->message(_("Formatting document..."));
 389
 390         LyXText * text = bv_->text();
 391         if (!text)
 392                 return;
 393
 394         text->init(bv_);
 395         update();
 396
 397         switchKeyMap();
 398         owner_->busy(false);
 399
 400         // Reset the "Formatting..." message
 401         owner_->clearMessage();
 402
 403         updateScrollbar();
 404 }
 405
 406
 407 void BufferView::Pimpl::updateScrollbar()
 408 {
 409         if (!bv_->text()) {
 410                 lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION
 411                                      << " no text in updateScrollbar" << endl;
 412                 workarea().setScrollbarParams(0, 0, 0);
 413                 return;
 414         }
 415
 416         LyXText & t = *bv_->text();
 417         if (anchor_ref_ >  int(t.paragraphs().size()) - 1) {
 418                 anchor_ref_ = int(t.paragraphs().size()) - 1;
 419                 offset_ref_ = 0;
 420         }
 421
 422         lyxerr[Debug::GUI]
 423                 << BOOST_CURRENT_FUNCTION
 424                 << " Updating scrollbar: height: " << t.paragraphs().size()
 425                 << " curr par: " << cursor_.bottom().pit()
 426                 << " default height " << defaultRowHeight() << endl;
 427
 428         // It would be better to fix the scrollbar to understand
 429         // values in [0..1] and divide everything by wh
 430         int const wh = workarea().workHeight() / 4;
 431         int const h = t.getPar(anchor_ref_).height();
 432         workarea().setScrollbarParams(t.paragraphs().size() * wh, anchor_ref_ * wh + int(offset_ref_ * wh / float(h)), int (wh * defaultRowHeight() / float(h)));
 433 //      workarea().setScrollbarParams(t.paragraphs().size(), anchor_ref_, 1);
 434 }
 435
 436
 437 void BufferView::Pimpl::scrollDocView(int value)
 438 {
 439         lyxerr[Debug::GUI] << BOOST_CURRENT_FUNCTION
 440                            << "[ value = " << value << "]" << endl;
 441
 442         if (!buffer_)
 443                 return;
 444
 445         screen().hideCursor();
 446
 447         int const wh = workarea().workHeight() / 4;
 448
 449         LyXText & t = *bv_->text();
 450
 451         float const bar = value / float(wh * t.paragraphs().size());
 452
 453         anchor_ref_ = int(bar * t.paragraphs().size());
 454         t.redoParagraph(anchor_ref_);
 455         int const h = t.getPar(anchor_ref_).height();
 456         offset_ref_ = int((bar * t.paragraphs().size() - anchor_ref_) * h);
 457         update();
 458
 459         if (!lyxrc.cursor_follows_scrollbar)
 460                 return;
 461
 462         int const height = 2 * defaultRowHeight();
 463         int const first = height;
 464         int const last = workarea().workHeight() - height;
 465         LCursor & cur = cursor_;
 466
 467         bv_funcs::CurStatus st = bv_funcs::status(bv_, cur);
 468
 469         switch (st) {
 470         case bv_funcs::CUR_ABOVE:
 471                 t.setCursorFromCoordinates(cur, 0, first);
 472                 cur.clearSelection();
 473                 break;
 474         case bv_funcs::CUR_BELOW:
 475                 t.setCursorFromCoordinates(cur, 0, last);
 476                 cur.clearSelection();
 477                 break;
 478         case bv_funcs::CUR_INSIDE:
 479                 int const y = bv_funcs::getPos(cur).y_;
 480                 int const newy = min(last, max(y, first));
 481                 if (y != newy) {
 482                         cur.reset(buffer_->inset());
 483                         t.setCursorFromCoordinates(cur, 0, newy);
 484                 }
 485         }
 486         owner_->updateLayoutChoice();
 487 }
 488
 489
 490 void BufferView::Pimpl::scroll(int /*lines*/)
 491 {
 492 //      if (!buffer_)
 493 //              return;
 494 //
 495 //      LyXText const * t = bv_->text();
 496 //      int const line_height = defaultRowHeight();
 497 //
 498 //      // The new absolute coordinate
 499 //      int new_top_y = top_y() + lines * line_height;
 500 //
 501 //      // Restrict to a valid value
 502 //      new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
 503 //      new_top_y = std::max(0, new_top_y);
 504 //
 505 //      scrollDocView(new_top_y);
 506 //
 507 //      // Update the scrollbar.
 508 //      workarea().setScrollbarParams(t->height(), top_y(), defaultRowHeight());
 509 }
 510
 511
 512 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 513                                          key_modifier::state state)
 514 {
 515         owner_->getLyXFunc().processKeySym(key, state);
 516
 517         /* This is perhaps a bit of a hack. When we move
 518          * around, or type, it's nice to be able to see
 519          * the cursor immediately after the keypress. So
 520          * we reset the toggle timeout and force the visibility
 521          * of the cursor. Note we cannot do this inside
 522          * dispatch() itself, because that's called recursively.
 523          */
 524         if (available())
 525                 screen().showCursor(*bv_);
 526 }
 527
 528
 529 void BufferView::Pimpl::selectionRequested()
 530 {
 531         static string sel;
 532
 533         if (!available())
 534                 return;
 535
 536         LCursor & cur = cursor_;
 537
 538         if (!cur.selection()) {
 539                 xsel_cache_.set = false;
 540                 return;
 541         }
 542
 543         if (!xsel_cache_.set ||
 544             cur.top() != xsel_cache_.cursor ||
 545             cur.anchor_.top() != xsel_cache_.anchor)
 546         {
 547                 xsel_cache_.cursor = cur.top();
 548                 xsel_cache_.anchor = cur.anchor_.top();
 549                 xsel_cache_.set = cur.selection();
 550                 sel = cur.selectionAsString(false);
 551                 if (!sel.empty())
 552                         workarea().putClipboard(sel);
 553         }
 554 }
 555
 556
 557 void BufferView::Pimpl::selectionLost()
 558 {
 559         if (available()) {
 560                 screen().hideCursor();
 561                 cursor_.clearSelection();
 562                 xsel_cache_.set = false;
 563         }
 564 }
 565
 566
 567 void BufferView::Pimpl::workAreaResize()
 568 {
 569         static int work_area_width;
 570         static int work_area_height;
 571
 572         bool const widthChange = workarea().workWidth() != work_area_width;
 573         bool const heightChange = workarea().workHeight() != work_area_height;
 574
 575         // Update from work area
 576         work_area_width = workarea().workWidth();
 577         work_area_height = workarea().workHeight();
 578
 579         if (buffer_ && widthChange) {
 580                 // The visible LyXView need a resize
 581                 resizeCurrentBuffer();
 582         }
 583
 584         if (widthChange || heightChange)
 585                 update();
 586
 587         // Always make sure that the scrollbar is sane.
 588         updateScrollbar();
 589         owner_->updateLayoutChoice();
 590 }
 591
 592
 593 bool BufferView::Pimpl::fitCursor()
 594 {
 595         if (bv_funcs::status(bv_, cursor_) == bv_funcs::CUR_INSIDE) {
 596                 LyXFont const font = cursor_.getFont();
 597                 int const asc = font_metrics::maxAscent(font);
 598                 int const des = font_metrics::maxDescent(font);
 599                 Point const p = bv_funcs::getPos(cursor_);
 600                 if (p.y_ - asc >= 0 && p.y_ + des < workarea().workHeight())
 601                         return false;
 602         }
 603         center();
 604         return true;
 605 }
 606
 607
 608 void BufferView::Pimpl::update(Update::flags flags)
 609 {
 610         lyxerr[Debug::DEBUG]
 611                 << BOOST_CURRENT_FUNCTION
 612                 << "[fitcursor = " << (flags & Update::FitCursor)
 613                 << ", forceupdate = " << (flags & Update::Force)
 614                 << ", singlepar = " << (flags & Update::SinglePar)
 615                 << "]  buffer: " << buffer_ << endl;
 616
 617         // Check needed to survive LyX startup
 618         if (buffer_) {
 619                 // Update macro store
 620                 buffer_->buildMacros();
 621
 622                 CoordCache backup;
 623                 std::swap(theCoords, backup);
 624
 625                 // This, together with doneUpdating(), verifies (using
 626                 // asserts) that screen redraw is not called from
 627                 // within itself.
 628                 theCoords.startUpdating();
 629
 630                 // First drawing step
 631                 ViewMetricsInfo vi = metrics();
 632                 bool forceupdate(flags & Update::Force);
 633
 634                 if ((flags & Update::FitCursor) && fitCursor()) {
 635                         forceupdate = true;
 636                         vi = metrics(flags & Update::SinglePar);
 637                 }
 638                 if (forceupdate) {
 639                         // Second drawing step
 640                         screen().redraw(*bv_, vi);
 641                 } else {
 642                         // Abort updating of the coord
 643                         // cache - just restore the old one
 644                         std::swap(theCoords, backup);
 645                 }
 646         } else
 647                 screen().greyOut();
 648
 649         // And the scrollbar
 650         updateScrollbar();
 651         owner_->view_state_changed();
 652 }
 653
 654
 655 // Callback for cursor timer
 656 void BufferView::Pimpl::cursorToggle()
 657 {
 658         if (buffer_) {
 659                 screen().toggleCursor(*bv_);
 660
 661                 // Use this opportunity to deal with any child processes that
 662                 // have finished but are waiting to communicate this fact
 663                 // to the rest of LyX.
 664                 ForkedcallsController & fcc = ForkedcallsController::get();
 665                 fcc.handleCompletedProcesses();
 666         }
 667
 668         cursor_timeout.restart();
 669 }
 670
 671
 672 bool BufferView::Pimpl::available() const
 673 {
 674         return buffer_ && bv_->text();
 675 }
 676
 677
 678 Change const BufferView::Pimpl::getCurrentChange()
 679 {
 680         if (!buffer_->params().tracking_changes)
 681                 return Change(Change::UNCHANGED);
 682
 683         LyXText * text = bv_->getLyXText();
 684         LCursor & cur = cursor_;
 685
 686         if (!cur.selection())
 687                 return Change(Change::UNCHANGED);
 688
 689         return text->getPar(cur.selBegin().pit()).
 690                         lookupChangeFull(cur.selBegin().pos());
 691 }
 692
 693
 694 void BufferView::Pimpl::savePosition(unsigned int i)
 695 {
 696         if (i >= saved_positions_num)
 697                 return;
 698         BOOST_ASSERT(cursor_.inTexted());
 699         saved_positions[i] = Position(buffer_->fileName(),
 700                                       cursor_.paragraph().id(),
 701                                       cursor_.pos());
 702         if (i > 0)
 703                 owner_->message(bformat(_("Saved bookmark %1$d"), i));
 704 }
 705
 706
 707 void BufferView::Pimpl::restorePosition(unsigned int i)
 708 {
 709         if (i >= saved_positions_num)
 710                 return;
 711
 712         string const fname = saved_positions[i].filename;
 713
 714         cursor_.clearSelection();
 715
 716         if (fname != buffer_->fileName()) {
 717                 Buffer * b = 0;
 718                 if (bufferlist.exists(fname))
 719                         b = bufferlist.getBuffer(fname);
 720                 else {
 721                         b = bufferlist.newBuffer(fname);
 722                         // Don't ask, just load it
 723                         ::loadLyXFile(b, fname);
 724                 }
 725                 if (b)
 726                         setBuffer(b);
 727         }
 728
 729         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 730         if (par == buffer_->par_iterator_end())
 731                 return;
 732
 733         bv_->setCursor(makeDocIterator(par, min(par->size(), saved_positions[i].par_pos)));
 734
 735         if (i > 0)
 736                 owner_->message(bformat(_("Moved to bookmark %1$d"), i));
 737 }
 738
 739
 740 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 741 {
 742         return i < saved_positions_num && !saved_positions[i].filename.empty();
 743 }
 744
 745
 746 void BufferView::Pimpl::switchKeyMap()
 747 {
 748         if (!lyxrc.rtl_support)
 749                 return;
 750
 751         Intl & intl = owner_->getIntl();
 752         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 753                 if (intl.keymap == Intl::PRIMARY)
 754                         intl.KeyMapSec();
 755         } else {
 756                 if (intl.keymap == Intl::SECONDARY)
 757                         intl.KeyMapPrim();
 758         }
 759 }
 760
 761
 762 void BufferView::Pimpl::center()
 763 {
 764         CursorSlice & bot = cursor_.bottom();
 765         lyx::pit_type const pit = bot.pit();
 766         bot.text()->redoParagraph(pit);
 767         Paragraph const & par = bot.text()->paragraphs()[pit];
 768         anchor_ref_ = pit;
 769         offset_ref_ = bv_funcs::coordOffset(cursor_).y_ + par.ascent()
 770                 - workarea().workHeight() / 2;
 771 }
 772
 773
 774 void BufferView::Pimpl::stuffClipboard(string const & content) const
 775 {
 776         workarea().putClipboard(content);
 777 }
 778
 779
 780 void BufferView::Pimpl::MenuInsertLyXFile(string const & filenm)
 781 {
 782         string filename = filenm;
 783
 784         if (filename.empty()) {
 785                 // Launch a file browser
 786                 string initpath = lyxrc.document_path;
 787
 788                 if (available()) {
 789                         string const trypath = owner_->buffer()->filePath();
 790                         // If directory is writeable, use this as default.
 791                         if (IsDirWriteable(trypath))
 792                                 initpath = trypath;
 793                 }
 794
 795                 FileDialog fileDlg(_("Select LyX document to insert"),
 796                         LFUN_FILE_INSERT,
 797                         make_pair(string(_("Documents|#o#O")),
 798                                   string(lyxrc.document_path)),
 799                         make_pair(string(_("Examples|#E#e")),
 800                                   string(AddPath(package().system_support(), "examples"))));
 801
 802                 FileDialog::Result result =
 803                         fileDlg.open(initpath,
 804                                      FileFilterList(_("LyX Documents (*.lyx)")),
 805                                      string());
 806
 807                 if (result.first == FileDialog::Later)
 808                         return;
 809
 810                 filename = result.second;
 811
 812                 // check selected filename
 813                 if (filename.empty()) {
 814                         owner_->message(_("Canceled."));
 815                         return;
 816                 }
 817         }
 818
 819         // Get absolute path of file and add ".lyx"
 820         // to the filename if necessary
 821         filename = FileSearch(string(), filename, "lyx");
 822
 823         string const disp_fn = MakeDisplayPath(filename);
 824         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 825
 826         cursor_.clearSelection();
 827         bv_->getLyXText()->breakParagraph(cursor_);
 828
 829         BOOST_ASSERT(cursor_.inTexted());
 830
 831         string const fname = MakeAbsPath(filename);
 832         bool const res = buffer_->readFile(fname, cursor_.pit());
 833         resizeCurrentBuffer();
 834
 835         string s = res ? _("Document %1$s inserted.")
 836                        : _("Could not insert document %1$s");
 837         owner_->message(bformat(s, disp_fn));
 838 }
 839
 840
 841 void BufferView::Pimpl::trackChanges()
 842 {
 843         bool const tracking = buffer_->params().tracking_changes;
 844
 845         if (!tracking) {
 846                 for_each(buffer_->par_iterator_begin(),
 847                          buffer_->par_iterator_end(),
 848                          bind(&Paragraph::trackChanges, _1, Change::UNCHANGED));
 849                 buffer_->params().tracking_changes = true;
 850
 851                 // We cannot allow undos beyond the freeze point
 852                 buffer_->undostack().clear();
 853         } else {
 854                 update();
 855                 bv_->text()->setCursor(cursor_, 0, 0);
 856 #ifdef WITH_WARNINGS
 857 #warning changes FIXME
 858 #endif
 859                 bool const found = lyx::find::findNextChange(bv_);
 860                 if (found) {
 861                         owner_->getDialogs().show("changes");
 862                         return;
 863                 }
 864
 865                 for_each(buffer_->par_iterator_begin(),
 866                          buffer_->par_iterator_end(),
 867                          mem_fun_ref(&Paragraph::untrackChanges));
 868
 869                 buffer_->params().tracking_changes = false;
 870         }
 871
 872         buffer_->redostack().clear();
 873 }
 874
 875
 876 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd0)
 877 {
 878         lyxerr << BOOST_CURRENT_FUNCTION
 879                << "[ cmd0 " << cmd0 << "]" << endl;
 880
 881         // This is only called for mouse related events including
 882         // LFUN_FILE_OPEN generated by drag-and-drop.
 883         FuncRequest cmd = cmd0;
 884
 885         // Handle drag&drop
 886         if (cmd.action == LFUN_FILE_OPEN) {
 887                 owner_->dispatch(cmd);
 888                 return true;
 889         }
 890
 891         if (!buffer_)
 892                 return false;
 893
 894         LCursor cur(*bv_);
 895         cur.push(buffer_->inset());
 896         cur.selection() = cursor_.selection();
 897
 898         // Doesn't go through lyxfunc, so we need to update
 899         // the layout choice etc. ourselves
 900
 901         // E.g. Qt mouse press when no buffer
 902         if (!available())
 903                 return false;
 904
 905         screen().hideCursor();
 906
 907         // Either the inset under the cursor or the
 908         // surrounding LyXText will handle this event.
 909
 910         // Build temporary cursor.
 911         cmd.y = min(max(cmd.y,-1), workarea().workHeight());
 912         InsetBase * inset = bv_->text()->editXY(cur, cmd.x, cmd.y);
 913         lyxerr << BOOST_CURRENT_FUNCTION
 914                << " * hit inset at tip: " << inset << endl;
 915         lyxerr << BOOST_CURRENT_FUNCTION
 916                << " * created temp cursor:" << cur << endl;
 917
 918         // Put anchor at the same position.
 919         cur.resetAnchor();
 920
 921         // Try to dispatch to an non-editable inset near this position
 922         // via the temp cursor. If the inset wishes to change the real
 923         // cursor it has to do so explicitly by using
 924         //  cur.bv().cursor() = cur;  (or similar)
 925         if (inset)
 926                 inset->dispatch(cur, cmd);
 927
 928         // Now dispatch to the temporary cursor. If the real cursor should
 929         // be modified, the inset's dispatch has to do so explicitly.
 930         if (!cur.result().dispatched())
 931                 cur.dispatch(cmd);
 932
 933         if (cur.result().dispatched()) {
 934                 // Redraw if requested or necessary.
 935                 if (cur.result().update())
 936                         update(Update::FitCursor | Update::Force);
 937                 else
 938                         update();
 939         }
 940
 941         // See workAreaKeyPress
 942         cursor_timeout.restart();
 943         screen().showCursor(*bv_);
 944
 945         // Skip these when selecting
 946         if (cmd.action != LFUN_MOUSE_MOTION) {
 947                 owner_->updateLayoutChoice();
 948                 owner_->updateToolbars();
 949         }
 950
 951         // Slight hack: this is only called currently when we
 952         // clicked somewhere, so we force through the display
 953         // of the new status here.
 954         owner_->clearMessage();
 955         return true;
 956 }
 957
 958
 959 FuncStatus BufferView::Pimpl::getStatus(FuncRequest const & cmd)
 960 {
 961         FuncStatus flag;
 962
 963         switch (cmd.action) {
 964
 965         case LFUN_UNDO:
 966                 flag.enabled(!buffer_->undostack().empty());
 967                 break;
 968         case LFUN_REDO:
 969                 flag.enabled(!buffer_->redostack().empty());
 970                 break;
 971         case LFUN_FILE_INSERT:
 972         case LFUN_FILE_INSERT_ASCII_PARA:
 973         case LFUN_FILE_INSERT_ASCII:
 974         case LFUN_FONT_STATE:
 975         case LFUN_INSERT_LABEL:
 976         case LFUN_BOOKMARK_SAVE:
 977         case LFUN_GOTO_PARAGRAPH:
 978         case LFUN_GOTOERROR:
 979         case LFUN_GOTONOTE:
 980         case LFUN_REFERENCE_GOTO:
 981         case LFUN_WORD_FIND:
 982         case LFUN_WORD_REPLACE:
 983         case LFUN_MARK_OFF:
 984         case LFUN_MARK_ON:
 985         case LFUN_SETMARK:
 986         case LFUN_CENTER:
 987         case LFUN_BIBDB_ADD:
 988         case LFUN_BIBDB_DEL:
 989         case LFUN_WORDS_COUNT:
 990                 flag.enabled(true);
 991                 break;
 992
 993         case LFUN_LABEL_GOTO: {
 994                 flag.enabled(!cmd.argument.empty()
 995                     || getInsetByCode<InsetRef>(cursor_, InsetBase::REF_CODE));
 996                 break;
 997         }
 998
 999         case LFUN_BOOKMARK_GOTO:
1000                 flag.enabled(isSavedPosition(convert<unsigned int>(cmd.argument)));
1001                 break;
1002         case LFUN_TRACK_CHANGES:
1003                 flag.enabled(true);
1004                 flag.setOnOff(buffer_->params().tracking_changes);
1005                 break;
1006
1007         case LFUN_OUTPUT_CHANGES: {
1008                 LaTeXFeatures features(*buffer_, buffer_->params(), false);
1009                 flag.enabled(buffer_ && buffer_->params().tracking_changes
1010                         && features.isAvailable("dvipost"));
1011                 flag.setOnOff(buffer_->params().output_changes);
1012                 break;
1013         }
1014
1015         case LFUN_MERGE_CHANGES:
1016         case LFUN_ACCEPT_CHANGE: // what about these two
1017         case LFUN_REJECT_CHANGE: // what about these two
1018         case LFUN_ACCEPT_ALL_CHANGES:
1019         case LFUN_REJECT_ALL_CHANGES:
1020                 flag.enabled(buffer_ && buffer_->params().tracking_changes);
1021                 break;
1022         default:
1023                 flag.enabled(false);
1024         }
1025
1026         return flag;
1027 }
1028
1029
1030
1031 bool BufferView::Pimpl::dispatch(FuncRequest const & cmd)
1032 {
1033         //lyxerr << BOOST_CURRENT_FUNCTION
1034         //       << [ cmd = " << cmd << "]" << endl;
1035
1036         // Make sure that the cached BufferView is correct.
1037         lyxerr[Debug::ACTION] << BOOST_CURRENT_FUNCTION
1038                 << " action[" << cmd.action << ']'
1039                 << " arg[" << cmd.argument << ']'
1040                 << " x[" << cmd.x << ']'
1041                 << " y[" << cmd.y << ']'
1042                 << " button[" << cmd.button() << ']'
1043                 << endl;
1044
1045         LCursor & cur = cursor_;
1046
1047         switch (cmd.action) {
1048
1049         case LFUN_UNDO:
1050                 if (available()) {
1051                         cur.message(_("Undo"));
1052                         cur.clearSelection();
1053                         if (!textUndo(*bv_))
1054                                 cur.message(_("No further undo information"));
1055                         update();
1056                         switchKeyMap();
1057                 }
1058                 break;
1059
1060         case LFUN_REDO:
1061                 if (available()) {
1062                         cur.message(_("Redo"));
1063                         cur.clearSelection();
1064                         if (!textRedo(*bv_))
1065                                 cur.message(_("No further redo information"));
1066                         update();
1067                         switchKeyMap();
1068                 }
1069                 break;
1070
1071         case LFUN_FILE_INSERT:
1072                 MenuInsertLyXFile(cmd.argument);
1073                 break;
1074
1075         case LFUN_FILE_INSERT_ASCII_PARA:
1076                 InsertAsciiFile(bv_, cmd.argument, true);
1077                 break;
1078
1079         case LFUN_FILE_INSERT_ASCII:
1080                 InsertAsciiFile(bv_, cmd.argument, false);
1081                 break;
1082
1083         case LFUN_FONT_STATE:
1084                 cur.message(cur.currentState());
1085                 break;
1086
1087         case LFUN_BOOKMARK_SAVE:
1088                 savePosition(convert<unsigned int>(cmd.argument));
1089                 break;
1090
1091         case LFUN_BOOKMARK_GOTO:
1092                 restorePosition(convert<unsigned int>(cmd.argument));
1093                 break;
1094
1095         case LFUN_LABEL_GOTO: {
1096                 string label = cmd.argument;
1097                 if (label.empty()) {
1098                         InsetRef * inset =
1099                                 getInsetByCode<InsetRef>(cursor_,
1100                                                          InsetBase::REF_CODE);
1101                         if (inset) {
1102                                 label = inset->getContents();
1103                                 savePosition(0);
1104                         }
1105                 }
1106
1107                 if (!label.empty())
1108                         bv_->gotoLabel(label);
1109                 break;
1110         }
1111
1112         case LFUN_GOTO_PARAGRAPH: {
1113                 int const id = convert<int>(cmd.argument);
1114                 ParIterator par = buffer_->getParFromID(id);
1115                 if (par == buffer_->par_iterator_end()) {
1116                         lyxerr[Debug::INFO] << "No matching paragraph found! ["
1117                                             << id << ']' << endl;
1118                         break;
1119                 } else {
1120                         lyxerr[Debug::INFO] << "Paragraph " << par->id()
1121                                             << " found." << endl;
1122                 }
1123
1124                 // Set the cursor
1125                 bv_->setCursor(makeDocIterator(par, 0));
1126
1127                 update();
1128                 switchKeyMap();
1129                 break;
1130         }
1131
1132         case LFUN_GOTOERROR:
1133                 bv_funcs::gotoInset(bv_, InsetBase::ERROR_CODE, false);
1134                 break;
1135
1136         case LFUN_GOTONOTE:
1137                 bv_funcs::gotoInset(bv_, InsetBase::NOTE_CODE, false);
1138                 break;
1139
1140         case LFUN_REFERENCE_GOTO: {
1141                 vector<InsetBase_code> tmp;
1142                 tmp.push_back(InsetBase::LABEL_CODE);
1143                 tmp.push_back(InsetBase::REF_CODE);
1144                 bv_funcs::gotoInset(bv_, tmp, true);
1145                 break;
1146         }
1147
1148         case LFUN_TRACK_CHANGES:
1149                 trackChanges();
1150                 break;
1151
1152         case LFUN_OUTPUT_CHANGES: {
1153                 bool const state = buffer_->params().output_changes;
1154                 buffer_->params().output_changes = !state;
1155                 break;
1156         }
1157
1158         case LFUN_MERGE_CHANGES:
1159                 owner_->getDialogs().show("changes");
1160                 break;
1161
1162         case LFUN_ACCEPT_ALL_CHANGES: {
1163                 cursor_.reset(buffer_->inset());
1164 #ifdef WITH_WARNINGS
1165 #warning FIXME changes
1166 #endif
1167                 while (lyx::find::findNextChange(bv_))
1168                         bv_->getLyXText()->acceptChange(cursor_);
1169                 update();
1170                 break;
1171         }
1172
1173         case LFUN_REJECT_ALL_CHANGES: {
1174                 cursor_.reset(buffer_->inset());
1175 #ifdef WITH_WARNINGS
1176 #warning FIXME changes
1177 #endif
1178                 while (lyx::find::findNextChange(bv_))
1179                         bv_->getLyXText()->rejectChange(cursor_);
1180                 break;
1181         }
1182
1183         case LFUN_WORD_FIND:
1184                 lyx::find::find(bv_, cmd);
1185                 break;
1186
1187         case LFUN_WORD_REPLACE:
1188                 lyx::find::replace(bv_, cmd);
1189                 break;
1190
1191         case LFUN_MARK_OFF:
1192                 cur.clearSelection();
1193                 cur.resetAnchor();
1194                 cur.message(N_("Mark off"));
1195                 break;
1196
1197         case LFUN_MARK_ON:
1198                 cur.clearSelection();
1199                 cur.mark() = true;
1200                 cur.resetAnchor();
1201                 cur.message(N_("Mark on"));
1202                 break;
1203
1204         case LFUN_SETMARK:
1205                 cur.clearSelection();
1206                 if (cur.mark()) {
1207                         cur.mark() = false;
1208                         cur.message(N_("Mark removed"));
1209                 } else {
1210                         cur.mark() = true;
1211                         cur.message(N_("Mark set"));
1212                 }
1213                 cur.resetAnchor();
1214                 break;
1215
1216         case LFUN_CENTER:
1217                 center();
1218                 break;
1219
1220         case LFUN_BIBDB_ADD: {
1221                 LCursor tmpcur = cursor_;
1222                 bv_funcs::findInset(tmpcur, InsetBase::BIBTEX_CODE, false);
1223                 InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
1224                                                 InsetBase::BIBTEX_CODE);
1225                 if (inset)
1226                         inset->addDatabase(cmd.argument);
1227                 break;
1228         }
1229
1230         case LFUN_BIBDB_DEL: {
1231                 LCursor tmpcur = cursor_;
1232                 bv_funcs::findInset(tmpcur, InsetBase::BIBTEX_CODE, false);
1233                 InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
1234                                                 InsetBase::BIBTEX_CODE);
1235                 if (inset)
1236                         inset->delDatabase(cmd.argument);
1237                 break;
1238         }
1239
1240         case LFUN_WORDS_COUNT: {
1241                 DocIterator from, to;
1242                 if (cur.selection()) {
1243                         from = cur.selectionBegin();
1244                         to = cur.selectionEnd();
1245                 } else {
1246                         from = doc_iterator_begin(buffer_->inset());
1247                         to = doc_iterator_end(buffer_->inset());
1248                 }
1249                 int const count = countWords(from, to);
1250                 string message;
1251                 if (count != 1) {
1252                         if (cur.selection())
1253                                 message = bformat(_("%1$d words in selection."),
1254                                           count);
1255                                 else
1256                                         message = bformat(_("%1$d words in document."),
1257                                                           count);
1258                 }
1259                 else {
1260                         if (cur.selection())
1261                                 message = _("One word in selection.");
1262                         else
1263                                 message = _("One word in document.");
1264                 }
1265
1266                 Alert::information(_("Count words"), message);
1267         }
1268                 break;
1269         default:
1270                 return false;
1271         }
1272
1273         return true;
1274 }
1275
1276
1277 ViewMetricsInfo BufferView::Pimpl::metrics(bool singlepar)
1278 {
1279         // Remove old position cache
1280         theCoords.clear();
1281         BufferView & bv = *bv_;
1282         LyXText * const text = bv.text();
1283         if (anchor_ref_ > int(text->paragraphs().size() - 1)) {
1284                 anchor_ref_ = int(text->paragraphs().size() - 1);
1285                 offset_ref_ = 0;
1286         }
1287
1288         lyx::pit_type const pit = anchor_ref_;
1289         int pit1 = pit;
1290         int pit2 = pit;
1291         size_t const npit = text->paragraphs().size();
1292
1293         lyxerr[Debug::DEBUG]
1294                 << BOOST_CURRENT_FUNCTION
1295                 << " npit: " << npit
1296                 << " pit1: " << pit1
1297                 << " pit2: " << pit2
1298                 << endl;
1299
1300         // Rebreak anchor par
1301         text->redoParagraph(pit);
1302         int y0 = text->getPar(pit1).ascent() - offset_ref_;
1303
1304         // Redo paragraphs above cursor if necessary
1305         int y1 = y0;
1306         while (!singlepar && y1 > 0 && pit1 > 0) {
1307                 y1 -= text->getPar(pit1).ascent();
1308                 --pit1;
1309                 text->redoParagraph(pit1);
1310                 y1 -= text->getPar(pit1).descent();
1311         }
1312
1313
1314         // Take care of ascent of first line
1315         y1 -= text->getPar(pit1).ascent();
1316
1317         // Normalize anchor for next time
1318         anchor_ref_ = pit1;
1319         offset_ref_ = -y1;
1320
1321         // Grey at the beginning is ugly
1322         if (pit1 == 0 && y1 > 0) {
1323                 y0 -= y1;
1324                 y1 = 0;
1325                 anchor_ref_ = 0;
1326         }
1327
1328         // Redo paragraphs below cursor if necessary
1329         int y2 = y0;
1330         while (!singlepar && y2 < bv.workHeight() && pit2 < int(npit) - 1) {
1331                 y2 += text->getPar(pit2).descent();
1332                 ++pit2;
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         for (lyx::pit_type pit = pit1; pit <= pit2; ++pit) {
1343                 y += text->getPar(pit).ascent();
1344                 theCoords.parPos()[text][pit] = Point(0, y);
1345                 y += text->getPar(pit).descent();
1346         }
1347
1348         lyxerr[Debug::DEBUG]
1349                 << BOOST_CURRENT_FUNCTION
1350                 << " y1: " << y1
1351                 << " y2: " << y2
1352                 << endl;
1353
1354         return ViewMetricsInfo(pit1, pit2, y1, y2, singlepar);
1355 }