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/insetref.h"
  55 #include "insets/insettext.h"
  56
  57 #include "frontends/Alert.h"
  58 #include "frontends/Dialogs.h"
  59 #include "frontends/FileDialog.h"
  60 #include "frontends/font_metrics.h"
  61 #include "frontends/LyXView.h"
  62 #include "frontends/LyXScreenFactory.h"
  63 #include "frontends/screen.h"
  64 #include "frontends/WorkArea.h"
  65 #include "frontends/WorkAreaFactory.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/forkedcontr.h"
  73 #include "support/package.h"
  74 #include "support/types.h"
  75
  76 #include <boost/bind.hpp>
  77 #include <boost/current_function.hpp>
  78
  79 #include <functional>
  80 #include <vector>
  81
  82 using lyx::pos_type;
  83
  84 using lyx::support::AddPath;
  85 using lyx::support::bformat;
  86 using lyx::support::FileFilterList;
  87 using lyx::support::FileSearch;
  88 using lyx::support::ForkedcallsController;
  89 using lyx::support::IsDirWriteable;
  90 using lyx::support::MakeDisplayPath;
  91 using lyx::support::MakeAbsPath;
  92 using lyx::support::package;
  93
  94 using std::endl;
  95 using std::istringstream;
  96 using std::make_pair;
  97 using std::min;
  98 using std::max;
  99 using std::string;
 100 using std::mem_fun_ref;
 101 using std::vector;
 102
 103
 104 extern BufferList bufferlist;
 105
 106
 107 namespace {
 108
 109 unsigned int const saved_positions_num = 20;
 110
 111 // All the below connection objects are needed because of a bug in some
 112 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
 113 // to these connections we avoid a segfault upon startup, and also at exit.
 114 // (Lgb)
 115
 116 boost::signals::connection dispatchcon;
 117 boost::signals::connection timecon;
 118 boost::signals::connection doccon;
 119 boost::signals::connection resizecon;
 120 boost::signals::connection kpresscon;
 121 boost::signals::connection selectioncon;
 122 boost::signals::connection lostcon;
 123
 124
 125 /// Get next inset of this class from current cursor position
 126 template <class T>
 127 T * getInsetByCode(LCursor & cur, InsetBase::Code code)
 128 {
 129         T * inset = 0;
 130         DocIterator it = cur;
 131         if (it.nextInset() &&
 132             it.nextInset()->lyxCode() == code) {
 133                 inset = static_cast<T*>(it.nextInset());
 134         }
 135         return inset;
 136 }
 137
 138 } // anon namespace
 139
 140
 141 BufferView::Pimpl::Pimpl(BufferView & bv, LyXView * owner,
 142                          int width, int height)
 143         : bv_(&bv), owner_(owner), buffer_(0), cursor_timeout(400),
 144           using_xterm_cursor(false), cursor_(bv) ,
 145           anchor_ref_(0), offset_ref_(0)
 146 {
 147         xsel_cache_.set = false;
 148
 149         workarea_.reset(WorkAreaFactory::create(*owner_, width, height));
 150         screen_.reset(LyXScreenFactory::create(workarea()));
 151
 152         // Setup the signals
 153         doccon = workarea().scrollDocView
 154                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 155         resizecon = workarea().workAreaResize
 156                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 157         dispatchcon = workarea().dispatch
 158                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 159         kpresscon = workarea().workAreaKeyPress
 160                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 161         selectioncon = workarea().selectionRequested
 162                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 163         lostcon = workarea().selectionLost
 164                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 165
 166         timecon = cursor_timeout.timeout
 167                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 168         cursor_timeout.start();
 169         saved_positions.resize(saved_positions_num);
 170 }
 171
 172
 173 void BufferView::Pimpl::addError(ErrorItem const & ei)
 174 {
 175         errorlist_.push_back(ei);
 176 }
 177
 178
 179 void BufferView::Pimpl::showReadonly(bool)
 180 {
 181         owner_->updateWindowTitle();
 182         owner_->getDialogs().updateBufferDependent(false);
 183 }
 184
 185
 186 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 187 {
 188         if (errorConnection_.connected())
 189                 disconnectBuffer();
 190
 191         errorConnection_ =
 192                 buf.error.connect(
 193                         boost::bind(&BufferView::Pimpl::addError, this, _1));
 194
 195         messageConnection_ =
 196                 buf.message.connect(
 197                         boost::bind(&LyXView::message, owner_, _1));
 198
 199         busyConnection_ =
 200                 buf.busy.connect(
 201                         boost::bind(&LyXView::busy, owner_, _1));
 202
 203         titleConnection_ =
 204                 buf.updateTitles.connect(
 205                         boost::bind(&LyXView::updateWindowTitle, owner_));
 206
 207         timerConnection_ =
 208                 buf.resetAutosaveTimers.connect(
 209                         boost::bind(&LyXView::resetAutosaveTimer, owner_));
 210
 211         readonlyConnection_ =
 212                 buf.readonly.connect(
 213                         boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 214
 215         closingConnection_ =
 216                 buf.closing.connect(
 217                         boost::bind(&BufferView::Pimpl::setBuffer, this, (Buffer *)0));
 218 }
 219
 220
 221 void BufferView::Pimpl::disconnectBuffer()
 222 {
 223         errorConnection_.disconnect();
 224         messageConnection_.disconnect();
 225         busyConnection_.disconnect();
 226         titleConnection_.disconnect();
 227         timerConnection_.disconnect();
 228         readonlyConnection_.disconnect();
 229         closingConnection_.disconnect();
 230 }
 231
 232
 233 void BufferView::Pimpl::newFile(string const & filename, string const & tname,
 234         bool isNamed)
 235 {
 236         setBuffer(::newFile(filename, tname, isNamed));
 237 }
 238
 239
 240 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 241 {
 242         // Get absolute path of file and add ".lyx"
 243         // to the filename if necessary
 244         string s = FileSearch(string(), filename, "lyx");
 245
 246         bool const found = !s.empty();
 247
 248         if (!found)
 249                 s = filename;
 250
 251         // File already open?
 252         if (bufferlist.exists(s)) {
 253                 string const file = MakeDisplayPath(s, 20);
 254                 string text = bformat(_("The document %1$s is already "
 255                                         "loaded.\n\nDo you want to revert "
 256                                         "to the saved version?"), file);
 257                 int const ret = Alert::prompt(_("Revert to saved document?"),
 258                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 259
 260                 if (ret != 0) {
 261                         setBuffer(bufferlist.getBuffer(s));
 262                         return true;
 263                 }
 264                 // FIXME: should be LFUN_REVERT
 265                 if (!bufferlist.close(bufferlist.getBuffer(s), false))
 266                         return false;
 267                 // Fall through to new load. (Asger)
 268         }
 269
 270         Buffer * b;
 271
 272         if (found) {
 273                 b = bufferlist.newBuffer(s);
 274                 connectBuffer(*b);
 275                 if (!::loadLyXFile(b, s)) {
 276                         bufferlist.release(b);
 277                         return false;
 278                 }
 279         } else {
 280                 string text = bformat(_("The document %1$s does not yet "
 281                                         "exist.\n\nDo you want to create "
 282                                         "a new document?"), s);
 283                 int const ret = Alert::prompt(_("Create new document?"),
 284                          text, 0, 1, _("&Create"), _("Cancel"));
 285
 286                 if (ret == 0)
 287                         b = ::newFile(s, string(), true);
 288                 else
 289                         return false;
 290         }
 291
 292         setBuffer(b);
 293         bv_->showErrorList(_("Parse"));
 294
 295         if (tolastfiles)
 296                 LyX::ref().lastfiles().newFile(b->fileName());
 297
 298         return true;
 299 }
 300
 301
 302 WorkArea & BufferView::Pimpl::workarea() const
 303 {
 304         return *workarea_.get();
 305 }
 306
 307
 308 LyXScreen & BufferView::Pimpl::screen() const
 309 {
 310         return *screen_.get();
 311 }
 312
 313
 314 Painter & BufferView::Pimpl::painter() const
 315 {
 316         return workarea().getPainter();
 317 }
 318
 319
 320 void BufferView::Pimpl::setBuffer(Buffer * b)
 321 {
 322         lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 323                             << "[ b = " << b << "]" << endl;
 324
 325         if (buffer_)
 326                 disconnectBuffer();
 327
 328         // If we are closing current buffer, switch to the first in
 329         // buffer list.
 330         if (!b) {
 331                 lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 332                                     << " No Buffer!" << endl;
 333                 // We are closing the buffer, use the first buffer as current
 334                 buffer_ = bufferlist.first();
 335                 owner_->getDialogs().hideBufferDependent();
 336         } else {
 337                 // Set current buffer
 338                 buffer_ = b;
 339         }
 340
 341         // Reset old cursor
 342         cursor_ = LCursor(*bv_);
 343         anchor_ref_ = 0;
 344         offset_ref_ = 0;
 345
 346
 347         // If we're quitting lyx, don't bother updating stuff
 348         if (quitting)
 349                 return;
 350
 351         if (buffer_) {
 352                 lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 353                                     << "Buffer addr: " << buffer_ << endl;
 354                 connectBuffer(*buffer_);
 355
 356                 cursor_.push(buffer_->inset());
 357                 cursor_.resetAnchor();
 358                 buffer_->text().init(bv_);
 359                 buffer_->text().setCurrentFont(cursor_);
 360
 361                 // Buffer-dependent dialogs should be updated or
 362                 // hidden. This should go here because some dialogs (eg ToC)
 363                 // require bv_->text.
 364                 owner_->getDialogs().updateBufferDependent(true);
 365         }
 366
 367         update();
 368         updateScrollbar();
 369         owner_->updateMenubar();
 370         owner_->updateToolbars();
 371         owner_->updateLayoutChoice();
 372         owner_->updateWindowTitle();
 373
 374         // This is done after the layout combox has been populated
 375         if (buffer_)
 376                 owner_->setLayout(cursor_.paragraph().layout()->name());
 377
 378         if (buffer_ && lyx::graphics::Previews::status() != LyXRC::PREVIEW_OFF)
 379                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 380 }
 381
 382
 383 void BufferView::Pimpl::resizeCurrentBuffer()
 384 {
 385         lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION << endl;
 386         owner_->busy(true);
 387         owner_->message(_("Formatting document..."));
 388
 389         LyXText * text = bv_->text();
 390         if (!text)
 391                 return;
 392
 393         text->init(bv_);
 394         update();
 395
 396         switchKeyMap();
 397         owner_->busy(false);
 398
 399         // Reset the "Formatting..." message
 400         owner_->clearMessage();
 401
 402         updateScrollbar();
 403 }
 404
 405
 406 void BufferView::Pimpl::updateScrollbar()
 407 {
 408         if (!bv_->text()) {
 409                 lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION
 410                                      << " no text in updateScrollbar" << endl;
 411                 workarea().setScrollbarParams(0, 0, 0);
 412                 return;
 413         }
 414
 415         LyXText & t = *bv_->text();
 416         if (anchor_ref_ >  int(t.paragraphs().size()) - 1) {
 417                 anchor_ref_ = int(t.paragraphs().size()) - 1;
 418                 offset_ref_ = 0;
 419         }
 420
 421         lyxerr[Debug::GUI]
 422                 << BOOST_CURRENT_FUNCTION
 423                 << " Updating scrollbar: height: " << t.paragraphs().size()
 424                 << " curr par: " << cursor_.bottom().pit()
 425                 << " default height " << defaultRowHeight() << endl;
 426
 427         // It would be better to fix the scrollbar to understand
 428         // values in [0..1] and divide everything by wh
 429         int const wh = workarea().workHeight() / 4;
 430         int const h = t.getPar(anchor_ref_).height();
 431         workarea().setScrollbarParams(t.paragraphs().size() * wh, anchor_ref_ * wh + int(offset_ref_ * wh / float(h)), int (wh * defaultRowHeight() / float(h)));
 432 //      workarea().setScrollbarParams(t.paragraphs().size(), anchor_ref_, 1);
 433 }
 434
 435
 436 void BufferView::Pimpl::scrollDocView(int value)
 437 {
 438         lyxerr[Debug::GUI] << BOOST_CURRENT_FUNCTION
 439                            << "[ value = " << value << "]" << endl;
 440
 441         if (!buffer_)
 442                 return;
 443
 444         screen().hideCursor();
 445
 446         int const wh = workarea().workHeight() / 4;
 447
 448         LyXText & t = *bv_->text();
 449
 450         float const bar = value / float(wh * t.paragraphs().size());
 451
 452         anchor_ref_ = int(bar * t.paragraphs().size());
 453         t.redoParagraph(anchor_ref_);
 454         int const h = t.getPar(anchor_ref_).height();
 455         offset_ref_ = int((bar * t.paragraphs().size() - anchor_ref_) * h);
 456         update();
 457
 458         if (!lyxrc.cursor_follows_scrollbar)
 459                 return;
 460
 461         int const height = 2 * defaultRowHeight();
 462         int const first = height;
 463         int const last = workarea().workHeight() - height;
 464         LCursor & cur = cursor_;
 465
 466         bv_funcs::CurStatus st = bv_funcs::status(bv_, cur);
 467
 468         switch (st) {
 469         case bv_funcs::CUR_ABOVE:
 470                 t.setCursorFromCoordinates(cur, 0, first);
 471                 cur.clearSelection();
 472                 break;
 473         case bv_funcs::CUR_BELOW:
 474                 t.setCursorFromCoordinates(cur, 0, last);
 475                 cur.clearSelection();
 476                 break;
 477         case bv_funcs::CUR_INSIDE:
 478                 int const y = bv_funcs::getPos(cur).y_;
 479                 int const newy = min(last, max(y, first));
 480                 if (y != newy) {
 481                         cur.reset(buffer_->inset());
 482                         t.setCursorFromCoordinates(cur, 0, newy);
 483                 }
 484         }
 485         owner_->updateLayoutChoice();
 486 }
 487
 488
 489 void BufferView::Pimpl::scroll(int /*lines*/)
 490 {
 491 //      if (!buffer_)
 492 //              return;
 493 //
 494 //      LyXText const * t = bv_->text();
 495 //      int const line_height = defaultRowHeight();
 496 //
 497 //      // The new absolute coordinate
 498 //      int new_top_y = top_y() + lines * line_height;
 499 //
 500 //      // Restrict to a valid value
 501 //      new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
 502 //      new_top_y = std::max(0, new_top_y);
 503 //
 504 //      scrollDocView(new_top_y);
 505 //
 506 //      // Update the scrollbar.
 507 //      workarea().setScrollbarParams(t->height(), top_y(), defaultRowHeight());
 508 }
 509
 510
 511 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 512                                          key_modifier::state state)
 513 {
 514         owner_->getLyXFunc().processKeySym(key, state);
 515
 516         /* This is perhaps a bit of a hack. When we move
 517          * around, or type, it's nice to be able to see
 518          * the cursor immediately after the keypress. So
 519          * we reset the toggle timeout and force the visibility
 520          * of the cursor. Note we cannot do this inside
 521          * dispatch() itself, because that's called recursively.
 522          */
 523         if (available()) {
 524                 cursor_timeout.restart();
 525                 screen().showCursor(*bv_);
 526         }
 527 }
 528
 529
 530 void BufferView::Pimpl::selectionRequested()
 531 {
 532         static string sel;
 533
 534         if (!available())
 535                 return;
 536
 537         LCursor & cur = cursor_;
 538
 539         if (!cur.selection()) {
 540                 xsel_cache_.set = false;
 541                 return;
 542         }
 543
 544         if (!xsel_cache_.set ||
 545             cur.top() != xsel_cache_.cursor ||
 546             cur.anchor_.top() != xsel_cache_.anchor)
 547         {
 548                 xsel_cache_.cursor = cur.top();
 549                 xsel_cache_.anchor = cur.anchor_.top();
 550                 xsel_cache_.set = cur.selection();
 551                 sel = cur.selectionAsString(false);
 552                 if (!sel.empty())
 553                         workarea().putClipboard(sel);
 554         }
 555 }
 556
 557
 558 void BufferView::Pimpl::selectionLost()
 559 {
 560         if (available()) {
 561                 screen().hideCursor();
 562                 cursor_.clearSelection();
 563                 xsel_cache_.set = false;
 564         }
 565 }
 566
 567
 568 void BufferView::Pimpl::workAreaResize()
 569 {
 570         static int work_area_width;
 571         static int work_area_height;
 572
 573         bool const widthChange = workarea().workWidth() != work_area_width;
 574         bool const heightChange = workarea().workHeight() != work_area_height;
 575
 576         // Update from work area
 577         work_area_width = workarea().workWidth();
 578         work_area_height = workarea().workHeight();
 579
 580         if (buffer_ && widthChange) {
 581                 // The visible LyXView need a resize
 582                 resizeCurrentBuffer();
 583         }
 584
 585         if (widthChange || heightChange)
 586                 update();
 587
 588         // Always make sure that the scrollbar is sane.
 589         updateScrollbar();
 590         owner_->updateLayoutChoice();
 591 }
 592
 593
 594 bool BufferView::Pimpl::fitCursor()
 595 {
 596         if (bv_funcs::status(bv_, cursor_) == bv_funcs::CUR_INSIDE) {
 597                 LyXFont const font = cursor_.getFont();
 598                 int const asc = font_metrics::maxAscent(font);
 599                 int const des = font_metrics::maxDescent(font);
 600                 Point p = bv_funcs::getPos(cursor_);
 601                 if (p.y_ - asc >= 0 && p.y_ + des < workarea().workHeight())
 602                         return false;
 603         }
 604         center();
 605         return true;
 606 }
 607
 608
 609 void BufferView::Pimpl::update(bool fitcursor, bool forceupdate)
 610 {
 611         lyxerr << BOOST_CURRENT_FUNCTION
 612                << "[fitcursor = " << fitcursor << ','
 613                << " forceupdate = " << forceupdate
 614                << "]  buffer: " << buffer_ << endl;
 615
 616         // Check needed to survive LyX startup
 617         if (buffer_) {
 618                 // Update macro store
 619                 buffer_->buildMacros();
 620
 621                 CoordCache backup;
 622                 std::swap(theCoords, backup);
 623
 624                 // This call disallows cursor blink to call
 625                 // processEvents. It is necessary to prevent screen
 626                 // redraw being called recursively.
 627                 screen().unAllowSync();
 628                 // This, together with doneUpdating(), verifies (using
 629                 // asserts) that screen redraw is not called from
 630                 // within itself.
 631                 theCoords.startUpdating();
 632
 633                 // First drawing step
 634                 ViewMetricsInfo vi = metrics();
 635
 636                 if (fitcursor && fitCursor()) {
 637                         forceupdate = true;
 638                         vi = metrics();
 639                 }
 640                 if (forceupdate) {
 641                         // Second drawing step
 642                         screen().redraw(*bv_, vi);
 643                 } else {
 644                         // Abort updating of the coord
 645                         // cache - just restore the old one
 646                         std::swap(theCoords, backup);
 647                 }
 648         } else
 649                 screen().greyOut();
 650
 651         // And the scrollbar
 652         updateScrollbar();
 653         owner_->view_state_changed();
 654 }
 655
 656
 657 // Callback for cursor timer
 658 void BufferView::Pimpl::cursorToggle()
 659 {
 660         if (buffer_) {
 661                 screen().toggleCursor(*bv_);
 662
 663                 // Use this opportunity to deal with any child processes that
 664                 // have finished but are waiting to communicate this fact
 665                 // to the rest of LyX.
 666                 ForkedcallsController & fcc = ForkedcallsController::get();
 667                 fcc.handleCompletedProcesses();
 668         }
 669
 670         cursor_timeout.restart();
 671 }
 672
 673
 674 bool BufferView::Pimpl::available() const
 675 {
 676         return buffer_ && bv_->text();
 677 }
 678
 679
 680 Change const BufferView::Pimpl::getCurrentChange()
 681 {
 682         if (!buffer_->params().tracking_changes)
 683                 return Change(Change::UNCHANGED);
 684
 685         LyXText * text = bv_->getLyXText();
 686         LCursor & cur = cursor_;
 687
 688         if (!cur.selection())
 689                 return Change(Change::UNCHANGED);
 690
 691         return text->getPar(cur.selBegin().pit()).
 692                         lookupChangeFull(cur.selBegin().pos());
 693 }
 694
 695
 696 void BufferView::Pimpl::savePosition(unsigned int i)
 697 {
 698         if (i >= saved_positions_num)
 699                 return;
 700         BOOST_ASSERT(cursor_.inTexted());
 701         saved_positions[i] = Position(buffer_->fileName(),
 702                                       cursor_.paragraph().id(),
 703                                       cursor_.pos());
 704         if (i > 0)
 705                 owner_->message(bformat(_("Saved bookmark %1$d"), i));
 706 }
 707
 708
 709 void BufferView::Pimpl::restorePosition(unsigned int i)
 710 {
 711         if (i >= saved_positions_num)
 712                 return;
 713
 714         string const fname = saved_positions[i].filename;
 715
 716         cursor_.clearSelection();
 717
 718         if (fname != buffer_->fileName()) {
 719                 Buffer * b = 0;
 720                 if (bufferlist.exists(fname))
 721                         b = bufferlist.getBuffer(fname);
 722                 else {
 723                         b = bufferlist.newBuffer(fname);
 724                         // Don't ask, just load it
 725                         ::loadLyXFile(b, fname);
 726                 }
 727                 if (b)
 728                         setBuffer(b);
 729         }
 730
 731         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 732         if (par == buffer_->par_iterator_end())
 733                 return;
 734
 735         bv_->setCursor(makeDocIterator(par, min(par->size(), saved_positions[i].par_pos)));
 736
 737         if (i > 0)
 738                 owner_->message(bformat(_("Moved to bookmark %1$d"), i));
 739 }
 740
 741
 742 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 743 {
 744         return i < saved_positions_num && !saved_positions[i].filename.empty();
 745 }
 746
 747
 748 void BufferView::Pimpl::switchKeyMap()
 749 {
 750         if (!lyxrc.rtl_support)
 751                 return;
 752
 753         Intl & intl = owner_->getIntl();
 754         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 755                 if (intl.keymap == Intl::PRIMARY)
 756                         intl.KeyMapSec();
 757         } else {
 758                 if (intl.keymap == Intl::SECONDARY)
 759                         intl.KeyMapPrim();
 760         }
 761 }
 762
 763
 764 void BufferView::Pimpl::center()
 765 {
 766         CursorSlice & bot = cursor_.bottom();
 767         lyx::pit_type const pit = bot.pit();
 768         bot.text()->redoParagraph(pit);
 769         Paragraph const & par = bot.text()->paragraphs()[pit];
 770         anchor_ref_ = pit;
 771         offset_ref_ = bv_funcs::coordOffset(cursor_).y_ + par.ascent()
 772                 - workarea().workHeight() / 2;
 773 }
 774
 775
 776 void BufferView::Pimpl::stuffClipboard(string const & content) const
 777 {
 778         workarea().putClipboard(content);
 779 }
 780
 781
 782 void BufferView::Pimpl::MenuInsertLyXFile(string const & filenm)
 783 {
 784         string filename = filenm;
 785
 786         if (filename.empty()) {
 787                 // Launch a file browser
 788                 string initpath = lyxrc.document_path;
 789
 790                 if (available()) {
 791                         string const trypath = owner_->buffer()->filePath();
 792                         // If directory is writeable, use this as default.
 793                         if (IsDirWriteable(trypath))
 794                                 initpath = trypath;
 795                 }
 796
 797                 FileDialog fileDlg(_("Select LyX document to insert"),
 798                         LFUN_FILE_INSERT,
 799                         make_pair(string(_("Documents|#o#O")),
 800                                   string(lyxrc.document_path)),
 801                         make_pair(string(_("Examples|#E#e")),
 802                                   string(AddPath(package().system_support(), "examples"))));
 803
 804                 FileDialog::Result result =
 805                         fileDlg.open(initpath,
 806                                      FileFilterList(_("LyX Documents (*.lyx)")),
 807                                      string());
 808
 809                 if (result.first == FileDialog::Later)
 810                         return;
 811
 812                 filename = result.second;
 813
 814                 // check selected filename
 815                 if (filename.empty()) {
 816                         owner_->message(_("Canceled."));
 817                         return;
 818                 }
 819         }
 820
 821         // Get absolute path of file and add ".lyx"
 822         // to the filename if necessary
 823         filename = FileSearch(string(), filename, "lyx");
 824
 825         string const disp_fn = MakeDisplayPath(filename);
 826         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 827
 828         cursor_.clearSelection();
 829         bv_->getLyXText()->breakParagraph(cursor_);
 830
 831         BOOST_ASSERT(cursor_.inTexted());
 832
 833         string const fname = MakeAbsPath(filename);
 834         bool const res = buffer_->readFile(fname, cursor_.pit());
 835         resizeCurrentBuffer();
 836
 837         string s = res ? _("Document %1$s inserted.")
 838                        : _("Could not insert document %1$s");
 839         owner_->message(bformat(s, disp_fn));
 840 }
 841
 842
 843 void BufferView::Pimpl::trackChanges()
 844 {
 845         bool const tracking = buffer_->params().tracking_changes;
 846
 847         if (!tracking) {
 848                 for_each(buffer_->par_iterator_begin(),
 849                          buffer_->par_iterator_end(),
 850                          bind(&Paragraph::trackChanges, _1, Change::UNCHANGED));
 851                 buffer_->params().tracking_changes = true;
 852
 853                 // We cannot allow undos beyond the freeze point
 854                 buffer_->undostack().clear();
 855         } else {
 856                 update();
 857                 bv_->text()->setCursor(cursor_, 0, 0);
 858 #ifdef WITH_WARNINGS
 859 #warning changes FIXME
 860 #endif
 861                 bool const found = lyx::find::findNextChange(bv_);
 862                 if (found) {
 863                         owner_->getDialogs().show("changes");
 864                         return;
 865                 }
 866
 867                 for_each(buffer_->par_iterator_begin(),
 868                          buffer_->par_iterator_end(),
 869                          mem_fun_ref(&Paragraph::untrackChanges));
 870
 871                 buffer_->params().tracking_changes = false;
 872         }
 873
 874         buffer_->redostack().clear();
 875 }
 876
 877
 878 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd0)
 879 {
 880         lyxerr << BOOST_CURRENT_FUNCTION
 881                << "[ cmd0 " << cmd0 << "]" << endl;
 882
 883         // This is only called for mouse related events including
 884         // LFUN_FILE_OPEN generated by drag-and-drop.
 885         FuncRequest cmd = cmd0;
 886
 887         // Handle drag&drop
 888         if (cmd.action == LFUN_FILE_OPEN) {
 889                 owner_->dispatch(cmd);
 890                 return true;
 891         }
 892
 893         if (!buffer_)
 894                 return false;
 895
 896         LCursor cur(*bv_);
 897         cur.push(buffer_->inset());
 898         cur.selection() = cursor_.selection();
 899
 900         // Doesn't go through lyxfunc, so we need to update
 901         // the layout choice etc. ourselves
 902
 903         // E.g. Qt mouse press when no buffer
 904         if (!available())
 905                 return false;
 906
 907         screen().hideCursor();
 908
 909         // Either the inset under the cursor or the
 910         // surrounding LyXText will handle this event.
 911
 912         // Build temporary cursor.
 913         cmd.y = min(max(cmd.y,-1), workarea().workHeight());
 914         InsetBase * inset = bv_->text()->editXY(cur, cmd.x, cmd.y);
 915         lyxerr << BOOST_CURRENT_FUNCTION
 916                << " * hit inset at tip: " << inset << endl;
 917         lyxerr << BOOST_CURRENT_FUNCTION
 918                << " * created temp cursor:" << cur << endl;
 919
 920         // Put anchor at the same position.
 921         cur.resetAnchor();
 922
 923         // Try to dispatch to an non-editable inset near this position
 924         // via the temp cursor. If the inset wishes to change the real
 925         // cursor it has to do so explicitly by using
 926         //  cur.bv().cursor() = cur;  (or similar)
 927         if (inset)
 928                 inset->dispatch(cur, cmd);
 929
 930         // Now dispatch to the temporary cursor. If the real cursor should
 931         // be modified, the inset's dispatch has to do so explicitly.
 932         if (!cur.result().dispatched())
 933                 cur.dispatch(cmd);
 934
 935         if (cur.result().dispatched()) {
 936                 // Redraw if requested or necessary.
 937                 update(cur.result().update(), cur.result().update());
 938         }
 939
 940         // See workAreaKeyPress
 941         cursor_timeout.restart();
 942         screen().showCursor(*bv_);
 943
 944         // Skip these when selecting
 945         if (cmd.action != LFUN_MOUSE_MOTION) {
 946                 owner_->updateLayoutChoice();
 947                 owner_->updateToolbars();
 948         }
 949
 950         // Slight hack: this is only called currently when we
 951         // clicked somewhere, so we force through the display
 952         // of the new status here.
 953         owner_->clearMessage();
 954         return true;
 955 }
 956
 957
 958 FuncStatus BufferView::Pimpl::getStatus(FuncRequest const & cmd)
 959 {
 960         FuncStatus flag;
 961
 962         switch (cmd.action) {
 963
 964         case LFUN_UNDO:
 965                 flag.enabled(!buffer_->undostack().empty());
 966                 break;
 967         case LFUN_REDO:
 968                 flag.enabled(!buffer_->redostack().empty());
 969                 break;
 970         case LFUN_FILE_INSERT:
 971         case LFUN_FILE_INSERT_ASCII_PARA:
 972         case LFUN_FILE_INSERT_ASCII:
 973         case LFUN_FONT_STATE:
 974         case LFUN_INSERT_LABEL:
 975         case LFUN_BOOKMARK_SAVE:
 976         case LFUN_LABEL_GOTO:
 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_WORDS_COUNT:
 988                 flag.enabled(true);
 989                 break;
 990
 991         case LFUN_BOOKMARK_GOTO:
 992                 flag.enabled(isSavedPosition(convert<unsigned int>(cmd.argument)));
 993                 break;
 994         case LFUN_TRACK_CHANGES:
 995                 flag.enabled(true);
 996                 flag.setOnOff(buffer_->params().tracking_changes);
 997                 break;
 998
 999         case LFUN_OUTPUT_CHANGES: {
1000                 LaTeXFeatures features(*buffer_, buffer_->params(), false);
1001                 flag.enabled(buffer_ && buffer_->params().tracking_changes
1002                         && features.isAvailable("dvipost"));
1003                 flag.setOnOff(buffer_->params().output_changes);
1004                 break;
1005         }
1006
1007         case LFUN_MERGE_CHANGES:
1008         case LFUN_ACCEPT_CHANGE: // what about these two
1009         case LFUN_REJECT_CHANGE: // what about these two
1010         case LFUN_ACCEPT_ALL_CHANGES:
1011         case LFUN_REJECT_ALL_CHANGES:
1012                 flag.enabled(buffer_ && buffer_->params().tracking_changes);
1013                 break;
1014         default:
1015                 flag.enabled(false);
1016         }
1017
1018         return flag;
1019 }
1020
1021
1022
1023 bool BufferView::Pimpl::dispatch(FuncRequest const & cmd)
1024 {
1025         //lyxerr << BOOST_CURRENT_FUNCTION
1026         //       << [ cmd = " << cmd << "]" << endl;
1027
1028         // Make sure that the cached BufferView is correct.
1029         lyxerr[Debug::ACTION] << BOOST_CURRENT_FUNCTION
1030                 << " action[" << cmd.action << ']'
1031                 << " arg[" << cmd.argument << ']'
1032                 << " x[" << cmd.x << ']'
1033                 << " y[" << cmd.y << ']'
1034                 << " button[" << cmd.button() << ']'
1035                 << endl;
1036
1037         LCursor & cur = cursor_;
1038
1039         switch (cmd.action) {
1040
1041         case LFUN_UNDO:
1042                 if (available()) {
1043                         cur.message(_("Undo"));
1044                         cur.clearSelection();
1045                         if (!textUndo(*bv_))
1046                                 cur.message(_("No further undo information"));
1047                         update();
1048                         switchKeyMap();
1049                 }
1050                 break;
1051
1052         case LFUN_REDO:
1053                 if (available()) {
1054                         cur.message(_("Redo"));
1055                         cur.clearSelection();
1056                         if (!textRedo(*bv_))
1057                                 cur.message(_("No further redo information"));
1058                         update();
1059                         switchKeyMap();
1060                 }
1061                 break;
1062
1063         case LFUN_FILE_INSERT:
1064                 MenuInsertLyXFile(cmd.argument);
1065                 break;
1066
1067         case LFUN_FILE_INSERT_ASCII_PARA:
1068                 InsertAsciiFile(bv_, cmd.argument, true);
1069                 break;
1070
1071         case LFUN_FILE_INSERT_ASCII:
1072                 InsertAsciiFile(bv_, cmd.argument, false);
1073                 break;
1074
1075         case LFUN_FONT_STATE:
1076                 cur.message(cur.currentState());
1077                 break;
1078
1079         case LFUN_BOOKMARK_SAVE:
1080                 savePosition(convert<unsigned int>(cmd.argument));
1081                 break;
1082
1083         case LFUN_BOOKMARK_GOTO:
1084                 restorePosition(convert<unsigned int>(cmd.argument));
1085                 break;
1086
1087         case LFUN_LABEL_GOTO: {
1088                 string label = cmd.argument;
1089                 if (label.empty()) {
1090                         InsetRef * inset =
1091                                 getInsetByCode<InsetRef>(cursor_,
1092                                                          InsetBase::REF_CODE);
1093                         if (inset) {
1094                                 label = inset->getContents();
1095                                 savePosition(0);
1096                         }
1097                 }
1098
1099                 if (!label.empty())
1100                         bv_->gotoLabel(label);
1101                 break;
1102         }
1103
1104         case LFUN_GOTO_PARAGRAPH: {
1105                 int const id = convert<int>(cmd.argument);
1106                 ParIterator par = buffer_->getParFromID(id);
1107                 if (par == buffer_->par_iterator_end()) {
1108                         lyxerr[Debug::INFO] << "No matching paragraph found! ["
1109                                             << id << ']' << endl;
1110                         break;
1111                 } else {
1112                         lyxerr[Debug::INFO] << "Paragraph " << par->id()
1113                                             << " found." << endl;
1114                 }
1115
1116                 // Set the cursor
1117                 bv_->setCursor(makeDocIterator(par, 0));
1118
1119                 update();
1120                 switchKeyMap();
1121                 break;
1122         }
1123
1124         case LFUN_GOTOERROR:
1125                 bv_funcs::gotoInset(bv_, InsetBase::ERROR_CODE, false);
1126                 break;
1127
1128         case LFUN_GOTONOTE:
1129                 bv_funcs::gotoInset(bv_, InsetBase::NOTE_CODE, false);
1130                 break;
1131
1132         case LFUN_REFERENCE_GOTO: {
1133                 vector<InsetBase_code> tmp;
1134                 tmp.push_back(InsetBase::LABEL_CODE);
1135                 tmp.push_back(InsetBase::REF_CODE);
1136                 bv_funcs::gotoInset(bv_, tmp, true);
1137                 break;
1138         }
1139
1140         case LFUN_TRACK_CHANGES:
1141                 trackChanges();
1142                 break;
1143
1144         case LFUN_OUTPUT_CHANGES: {
1145                 bool const state = buffer_->params().output_changes;
1146                 buffer_->params().output_changes = !state;
1147                 break;
1148         }
1149
1150         case LFUN_MERGE_CHANGES:
1151                 owner_->getDialogs().show("changes");
1152                 break;
1153
1154         case LFUN_ACCEPT_ALL_CHANGES: {
1155                 cursor_.reset(buffer_->inset());
1156 #ifdef WITH_WARNINGS
1157 #warning FIXME changes
1158 #endif
1159                 while (lyx::find::findNextChange(bv_))
1160                         bv_->getLyXText()->acceptChange(cursor_);
1161                 update();
1162                 break;
1163         }
1164
1165         case LFUN_REJECT_ALL_CHANGES: {
1166                 cursor_.reset(buffer_->inset());
1167 #ifdef WITH_WARNINGS
1168 #warning FIXME changes
1169 #endif
1170                 while (lyx::find::findNextChange(bv_))
1171                         bv_->getLyXText()->rejectChange(cursor_);
1172                 break;
1173         }
1174
1175         case LFUN_WORD_FIND:
1176                 lyx::find::find(bv_, cmd);
1177                 break;
1178
1179         case LFUN_WORD_REPLACE:
1180                 lyx::find::replace(bv_, cmd);
1181                 break;
1182
1183         case LFUN_MARK_OFF:
1184                 cur.clearSelection();
1185                 cur.resetAnchor();
1186                 cur.message(N_("Mark off"));
1187                 break;
1188
1189         case LFUN_MARK_ON:
1190                 cur.clearSelection();
1191                 cur.mark() = true;
1192                 cur.resetAnchor();
1193                 cur.message(N_("Mark on"));
1194                 break;
1195
1196         case LFUN_SETMARK:
1197                 cur.clearSelection();
1198                 if (cur.mark()) {
1199                         cur.mark() = false;
1200                         cur.message(N_("Mark removed"));
1201                 } else {
1202                         cur.mark() = true;
1203                         cur.message(N_("Mark set"));
1204                 }
1205                 cur.resetAnchor();
1206                 break;
1207
1208         case LFUN_CENTER:
1209                 center();
1210                 break;
1211
1212         case LFUN_WORDS_COUNT: {
1213                 DocIterator from, to;
1214                 if (cur.selection()) {
1215                         from = cur.selectionBegin();
1216                         to = cur.selectionEnd();
1217                 } else {
1218                         from = doc_iterator_begin(buffer_->inset());
1219                         to = doc_iterator_end(buffer_->inset());
1220                 }
1221                 int const count = countWords(from, to);
1222                 string message;
1223                 if (count != 1) {
1224                         if (cur.selection())
1225                                 message = bformat(_("%1$d words in selection."),
1226                                           count);
1227                                 else
1228                                         message = bformat(_("%1$d words in document."),
1229                                                           count);
1230                 }
1231                 else {
1232                         if (cur.selection())
1233                                 message = _("One word in selection.");
1234                         else
1235                                 message = _("One word in document.");
1236                 }
1237
1238                 Alert::information(_("Count words"), message);
1239         }
1240                 break;
1241         default:
1242                 return false;
1243         }
1244
1245         return true;
1246 }
1247
1248
1249 ViewMetricsInfo BufferView::Pimpl::metrics()
1250 {
1251         // Remove old position cache
1252         theCoords.clear();
1253         BufferView & bv = *bv_;
1254         LyXText * const text = bv.text();
1255         if (anchor_ref_ > int(text->paragraphs().size() - 1)) {
1256                 anchor_ref_ = int(text->paragraphs().size() - 1);
1257                 offset_ref_ = 0;
1258         }
1259
1260         lyx::pit_type const pit = anchor_ref_;
1261         int pit1 = pit;
1262         int pit2 = pit;
1263         size_t const npit = text->paragraphs().size();
1264
1265         lyxerr << BOOST_CURRENT_FUNCTION
1266                << " npit: " << npit
1267                << " pit1: " << pit1
1268                << " pit2: " << pit2
1269                << endl;
1270
1271         // Rebreak anchor par
1272         text->redoParagraph(pit);
1273         int y0 = text->getPar(pit1).ascent() - offset_ref_;
1274
1275         // Redo paragraphs above cursor if necessary
1276         int y1 = y0;
1277         while (y1 > 0 && pit1 > 0) {
1278                 y1 -= text->getPar(pit1).ascent();
1279                 --pit1;
1280                 text->redoParagraph(pit1);
1281                 y1 -= text->getPar(pit1).descent();
1282         }
1283
1284
1285         // Take care of ascent of first line
1286         y1 -= text->getPar(pit1).ascent();
1287
1288         // Normalize anchor for next time
1289         anchor_ref_ = pit1;
1290         offset_ref_ = -y1;
1291
1292         // Grey at the beginning is ugly
1293         if (pit1 == 0 && y1 > 0) {
1294                 y0 -= y1;
1295                 y1 = 0;
1296                 anchor_ref_ = 0;
1297         }
1298
1299         // Redo paragraphs below cursor if necessary
1300         int y2 = y0;
1301         while (y2 < bv.workHeight() && pit2 < int(npit) - 1) {
1302                 y2 += text->getPar(pit2).descent();
1303                 ++pit2;
1304                 text->redoParagraph(pit2);
1305                 y2 += text->getPar(pit2).ascent();
1306         }
1307
1308         // Take care of descent of last line
1309         y2 += text->getPar(pit2).descent();
1310
1311         // The coordinates of all these paragraphs are correct, cache them
1312         int y = y1;
1313         for (lyx::pit_type pit = pit1; pit <= pit2; ++pit) {
1314                 y += text->getPar(pit).ascent();
1315                 theCoords.parPos()[text][pit] = Point(0, y);
1316                 y += text->getPar(pit).descent();
1317         }
1318
1319         lyxerr << BOOST_CURRENT_FUNCTION
1320                << " y1: " << y1
1321                << " y2: " << y2
1322                << endl;
1323
1324         return ViewMetricsInfo(pit1, pit2, y1, y2);
1325 }