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
  78 #include <functional>
  79
  80 using lyx::pos_type;
  81
  82 using lyx::support::AddPath;
  83 using lyx::support::bformat;
  84 using lyx::support::FileFilterList;
  85 using lyx::support::FileSearch;
  86 using lyx::support::ForkedcallsController;
  87 using lyx::support::IsDirWriteable;
  88 using lyx::support::MakeDisplayPath;
  89 using lyx::support::MakeAbsPath;
  90 using lyx::support::package;
  91
  92 using std::endl;
  93 using std::istringstream;
  94 using std::make_pair;
  95 using std::min;
  96 using std::max;
  97 using std::string;
  98 using std::mem_fun_ref;
  99
 100
 101 extern BufferList bufferlist;
 102
 103
 104 namespace {
 105
 106 unsigned int const saved_positions_num = 20;
 107
 108 // All the below connection objects are needed because of a bug in some
 109 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
 110 // to these connections we avoid a segfault upon startup, and also at exit.
 111 // (Lgb)
 112
 113 boost::signals::connection dispatchcon;
 114 boost::signals::connection timecon;
 115 boost::signals::connection doccon;
 116 boost::signals::connection resizecon;
 117 boost::signals::connection kpresscon;
 118 boost::signals::connection selectioncon;
 119 boost::signals::connection lostcon;
 120
 121
 122 /// Get next inset of this class from current cursor position
 123 template <class T>
 124 T * getInsetByCode(LCursor & cur, InsetBase::Code code)
 125 {
 126         T * inset = 0;
 127         DocIterator it = cur;
 128         if (it.nextInset() &&
 129             it.nextInset()->lyxCode() == code) {
 130                 inset = static_cast<T*>(it.nextInset());
 131         }
 132         return inset;
 133 }
 134
 135
 136 } // anon namespace
 137
 138
 139 BufferView::Pimpl::Pimpl(BufferView & bv, LyXView * owner,
 140                          int width, int height)
 141         : bv_(&bv), owner_(owner), buffer_(0), cursor_timeout(400),
 142           using_xterm_cursor(false), cursor_(bv) ,
 143           anchor_ref_(0), offset_ref_(0)
 144 {
 145         xsel_cache_.set = false;
 146
 147         workarea_.reset(WorkAreaFactory::create(*owner_, width, height));
 148         screen_.reset(LyXScreenFactory::create(workarea()));
 149
 150         // Setup the signals
 151         doccon = workarea().scrollDocView
 152                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 153         resizecon = workarea().workAreaResize
 154                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 155         dispatchcon = workarea().dispatch
 156                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 157         kpresscon = workarea().workAreaKeyPress
 158                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 159         selectioncon = workarea().selectionRequested
 160                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 161         lostcon = workarea().selectionLost
 162                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 163
 164         timecon = cursor_timeout.timeout
 165                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 166         cursor_timeout.start();
 167         saved_positions.resize(saved_positions_num);
 168 }
 169
 170
 171 void BufferView::Pimpl::addError(ErrorItem const & ei)
 172 {
 173         errorlist_.push_back(ei);
 174 }
 175
 176
 177 void BufferView::Pimpl::showReadonly(bool)
 178 {
 179         owner_->updateWindowTitle();
 180         owner_->getDialogs().updateBufferDependent(false);
 181 }
 182
 183
 184 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 185 {
 186         if (errorConnection_.connected())
 187                 disconnectBuffer();
 188
 189         errorConnection_ =
 190                 buf.error.connect(
 191                         boost::bind(&BufferView::Pimpl::addError, this, _1));
 192
 193         messageConnection_ =
 194                 buf.message.connect(
 195                         boost::bind(&LyXView::message, owner_, _1));
 196
 197         busyConnection_ =
 198                 buf.busy.connect(
 199                         boost::bind(&LyXView::busy, owner_, _1));
 200
 201         titleConnection_ =
 202                 buf.updateTitles.connect(
 203                         boost::bind(&LyXView::updateWindowTitle, owner_));
 204
 205         timerConnection_ =
 206                 buf.resetAutosaveTimers.connect(
 207                         boost::bind(&LyXView::resetAutosaveTimer, owner_));
 208
 209         readonlyConnection_ =
 210                 buf.readonly.connect(
 211                         boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 212
 213         closingConnection_ =
 214                 buf.closing.connect(
 215                         boost::bind(&BufferView::Pimpl::setBuffer, this, (Buffer *)0));
 216 }
 217
 218
 219 void BufferView::Pimpl::disconnectBuffer()
 220 {
 221         errorConnection_.disconnect();
 222         messageConnection_.disconnect();
 223         busyConnection_.disconnect();
 224         titleConnection_.disconnect();
 225         timerConnection_.disconnect();
 226         readonlyConnection_.disconnect();
 227         closingConnection_.disconnect();
 228 }
 229
 230
 231 void BufferView::Pimpl::newFile(string const & filename, string const & tname,
 232         bool isNamed)
 233 {
 234         setBuffer(::newFile(filename, tname, isNamed));
 235 }
 236
 237
 238 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 239 {
 240         // Get absolute path of file and add ".lyx"
 241         // to the filename if necessary
 242         string s = FileSearch(string(), filename, "lyx");
 243
 244         bool const found = !s.empty();
 245
 246         if (!found)
 247                 s = filename;
 248
 249         // File already open?
 250         if (bufferlist.exists(s)) {
 251                 string const file = MakeDisplayPath(s, 20);
 252                 string text = bformat(_("The document %1$s is already "
 253                                         "loaded.\n\nDo you want to revert "
 254                                         "to the saved version?"), file);
 255                 int const ret = Alert::prompt(_("Revert to saved document?"),
 256                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 257
 258                 if (ret != 0) {
 259                         setBuffer(bufferlist.getBuffer(s));
 260                         return true;
 261                 }
 262                 // FIXME: should be LFUN_REVERT
 263                 if (!bufferlist.close(bufferlist.getBuffer(s), false))
 264                         return false;
 265                 // Fall through to new load. (Asger)
 266         }
 267
 268         Buffer * b;
 269
 270         if (found) {
 271                 b = bufferlist.newBuffer(s);
 272                 connectBuffer(*b);
 273                 if (!::loadLyXFile(b, s)) {
 274                         bufferlist.release(b);
 275                         return false;
 276                 }
 277         } else {
 278                 string text = bformat(_("The document %1$s does not yet "
 279                                         "exist.\n\nDo you want to create "
 280                                         "a new document?"), s);
 281                 int const ret = Alert::prompt(_("Create new document?"),
 282                          text, 0, 1, _("&Create"), _("Cancel"));
 283
 284                 if (ret == 0)
 285                         b = ::newFile(s, string(), true);
 286                 else
 287                         return false;
 288         }
 289
 290         setBuffer(b);
 291         bv_->showErrorList(_("Parse"));
 292
 293         if (tolastfiles)
 294                 LyX::ref().lastfiles().newFile(b->fileName());
 295
 296         return true;
 297 }
 298
 299
 300 WorkArea & BufferView::Pimpl::workarea() const
 301 {
 302         return *workarea_.get();
 303 }
 304
 305
 306 LyXScreen & BufferView::Pimpl::screen() const
 307 {
 308         return *screen_.get();
 309 }
 310
 311
 312 Painter & BufferView::Pimpl::painter() const
 313 {
 314         return workarea().getPainter();
 315 }
 316
 317
 318 void BufferView::Pimpl::setBuffer(Buffer * b)
 319 {
 320         lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 321                             << "[ b = " << b << "]" << endl;
 322
 323         if (buffer_)
 324                 disconnectBuffer();
 325
 326         // If we are closing current buffer, switch to the first in
 327         // buffer list.
 328         if (!b) {
 329                 lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 330                                     << " No Buffer!" << endl;
 331                 // We are closing the buffer, use the first buffer as current
 332                 buffer_ = bufferlist.first();
 333                 owner_->getDialogs().hideBufferDependent();
 334         } else {
 335                 // Set current buffer
 336                 buffer_ = b;
 337         }
 338
 339         // Reset old cursor
 340         cursor_ = LCursor(*bv_);
 341         anchor_ref_ = 0;
 342         offset_ref_ = 0;
 343
 344
 345         // If we're quitting lyx, don't bother updating stuff
 346         if (quitting)
 347                 return;
 348
 349         if (buffer_) {
 350                 lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 351                                     << "Buffer addr: " << buffer_ << endl;
 352                 connectBuffer(*buffer_);
 353
 354                 cursor_.push(buffer_->inset());
 355                 cursor_.resetAnchor();
 356                 buffer_->text().init(bv_);
 357                 buffer_->text().setCurrentFont(cursor_);
 358
 359                 // Buffer-dependent dialogs should be updated or
 360                 // hidden. This should go here because some dialogs (eg ToC)
 361                 // require bv_->text.
 362                 owner_->getDialogs().updateBufferDependent(true);
 363         }
 364
 365         update();
 366         updateScrollbar();
 367         owner_->updateMenubar();
 368         owner_->updateToolbars();
 369         owner_->updateLayoutChoice();
 370         owner_->updateWindowTitle();
 371
 372         // This is done after the layout combox has been populated
 373         if (buffer_)
 374                 owner_->setLayout(cursor_.paragraph().layout()->name());
 375
 376         if (buffer_ && lyx::graphics::Previews::status() != LyXRC::PREVIEW_OFF)
 377                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 378 }
 379
 380
 381 void BufferView::Pimpl::resizeCurrentBuffer()
 382 {
 383         lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION << endl;
 384         owner_->busy(true);
 385         owner_->message(_("Formatting document..."));
 386
 387         LyXText * text = bv_->text();
 388         if (!text)
 389                 return;
 390
 391         text->init(bv_);
 392         update();
 393
 394         switchKeyMap();
 395         owner_->busy(false);
 396
 397         // Reset the "Formatting..." message
 398         owner_->clearMessage();
 399
 400         updateScrollbar();
 401 }
 402
 403
 404 void BufferView::Pimpl::updateScrollbar()
 405 {
 406         if (!bv_->text()) {
 407                 lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION
 408                                      << " no text in updateScrollbar" << endl;
 409                 workarea().setScrollbarParams(0, 0, 0);
 410                 return;
 411         }
 412
 413         LyXText & t = *bv_->text();
 414         if (anchor_ref_ >  int(t.paragraphs().size()) - 1) {
 415                 anchor_ref_ = int(t.paragraphs().size()) - 1;
 416                 offset_ref_ = 0;
 417         }
 418
 419         lyxerr[Debug::GUI]
 420                 << BOOST_CURRENT_FUNCTION
 421                 << " Updating scrollbar: height: " << t.paragraphs().size()
 422                 << " curr par: " << bv_->cursor().bottom().pit()
 423                 << " default height " << defaultRowHeight() << endl;
 424
 425         // It would be better to fix the scrollbar to understand
 426         // values in [0..1] and divide everything by wh
 427         int const wh = workarea().workHeight() / 4;
 428         int const h = t.getPar(anchor_ref_).height();
 429         workarea().setScrollbarParams(t.paragraphs().size() * wh, anchor_ref_ * wh + int(offset_ref_ * wh / float(h)), int (wh * defaultRowHeight() / float(h)));
 430 //      workarea().setScrollbarParams(t.paragraphs().size(), anchor_ref_, 1);
 431 }
 432
 433
 434 void BufferView::Pimpl::scrollDocView(int value)
 435 {
 436         lyxerr[Debug::GUI] << BOOST_CURRENT_FUNCTION
 437                            << "[ value = " << value << "]" << endl;
 438
 439         if (!buffer_)
 440                 return;
 441
 442         screen().hideCursor();
 443
 444         int const wh = workarea().workHeight() / 4;
 445
 446         LyXText & t = *bv_->text();
 447
 448         float const bar = value / float(wh * t.paragraphs().size());
 449
 450         anchor_ref_ = int(bar * t.paragraphs().size());
 451         t.redoParagraph(anchor_ref_);
 452         int const h = t.getPar(anchor_ref_).height();
 453         offset_ref_ = int((bar * t.paragraphs().size() - anchor_ref_) * h);
 454         update();
 455
 456         if (!lyxrc.cursor_follows_scrollbar)
 457                 return;
 458
 459         int const height = 2 * defaultRowHeight();
 460         int const first = height;
 461         int const last = workarea().workHeight() - height;
 462         LCursor & cur = bv_->cursor();
 463
 464         bv_funcs::CurStatus st = bv_funcs::status(bv_, cur);
 465
 466         switch (st) {
 467         case bv_funcs::CUR_ABOVE:
 468                 t.setCursorFromCoordinates(cur, 0, first);
 469                 cur.clearSelection();
 470                 break;
 471         case bv_funcs::CUR_BELOW:
 472                 t.setCursorFromCoordinates(cur, 0, last);
 473                 cur.clearSelection();
 474                 break;
 475         case bv_funcs::CUR_INSIDE:
 476                 int const y = bv_funcs::getPos(cur).y_;
 477                 int const newy = min(last, max(y, first));
 478                 if (y != newy) {
 479                         cur.reset(bv_->buffer()->inset());
 480                         t.setCursorFromCoordinates(cur, 0, newy);
 481                 }
 482         }
 483         owner_->updateLayoutChoice();
 484 }
 485
 486
 487 void BufferView::Pimpl::scroll(int lines)
 488 {
 489 //      if (!buffer_)
 490 //              return;
 491 //
 492 //      LyXText const * t = bv_->text();
 493 //      int const line_height = defaultRowHeight();
 494 //
 495 //      // The new absolute coordinate
 496 //      int new_top_y = top_y() + lines * line_height;
 497 //
 498 //      // Restrict to a valid value
 499 //      new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
 500 //      new_top_y = std::max(0, new_top_y);
 501 //
 502 //      scrollDocView(new_top_y);
 503 //
 504 //      // Update the scrollbar.
 505 //      workarea().setScrollbarParams(t->height(), top_y(), defaultRowHeight());
 506 }
 507
 508
 509 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 510                                          key_modifier::state state)
 511 {
 512         bv_->owner()->getLyXFunc().processKeySym(key, state);
 513
 514         /* This is perhaps a bit of a hack. When we move
 515          * around, or type, it's nice to be able to see
 516          * the cursor immediately after the keypress. So
 517          * we reset the toggle timeout and force the visibility
 518          * of the cursor. Note we cannot do this inside
 519          * dispatch() itself, because that's called recursively.
 520          */
 521         if (available()) {
 522                 cursor_timeout.restart();
 523                 screen().showCursor(*bv_);
 524         }
 525 }
 526
 527
 528 void BufferView::Pimpl::selectionRequested()
 529 {
 530         static string sel;
 531
 532         if (!available())
 533                 return;
 534
 535         LCursor & cur = bv_->cursor();
 536
 537         if (!cur.selection()) {
 538                 xsel_cache_.set = false;
 539                 return;
 540         }
 541
 542         if (!xsel_cache_.set ||
 543             cur.back() != xsel_cache_.cursor ||
 544             cur.anchor_.back() != xsel_cache_.anchor)
 545         {
 546                 xsel_cache_.cursor = cur.back();
 547                 xsel_cache_.anchor = cur.anchor_.back();
 548                 xsel_cache_.set = cur.selection();
 549                 sel = cur.selectionAsString(false);
 550                 if (!sel.empty())
 551                         workarea().putClipboard(sel);
 552         }
 553 }
 554
 555
 556 void BufferView::Pimpl::selectionLost()
 557 {
 558         if (available()) {
 559                 screen().hideCursor();
 560                 bv_->cursor().clearSelection();
 561                 xsel_cache_.set = false;
 562         }
 563 }
 564
 565
 566 void BufferView::Pimpl::workAreaResize()
 567 {
 568         static int work_area_width;
 569         static int work_area_height;
 570
 571         bool const widthChange = workarea().workWidth() != work_area_width;
 572         bool const heightChange = workarea().workHeight() != work_area_height;
 573
 574         // Update from work area
 575         work_area_width = workarea().workWidth();
 576         work_area_height = workarea().workHeight();
 577
 578         if (buffer_ && widthChange) {
 579                 // The visible LyXView need a resize
 580                 resizeCurrentBuffer();
 581         }
 582
 583         if (widthChange || heightChange)
 584                 update();
 585
 586         // Always make sure that the scrollbar is sane.
 587         updateScrollbar();
 588         owner_->updateLayoutChoice();
 589 }
 590
 591
 592 bool BufferView::Pimpl::fitCursor()
 593 {
 594         if (bv_funcs::status(bv_, bv_->cursor()) == bv_funcs::CUR_INSIDE) {
 595                 LyXFont const font = bv_->cursor().getFont();
 596                 int const asc = font_metrics::maxAscent(font);
 597                 int const des = font_metrics::maxDescent(font);
 598                 Point p = bv_funcs::getPos(bv_->cursor());
 599                 if (p.y_ - asc >= 0 && p.y_ + des < bv_->workHeight())
 600                         return false;
 601         }
 602         bv_->center();
 603         return true;
 604 }
 605
 606
 607 void BufferView::Pimpl::update(bool fitcursor, bool forceupdate)
 608 {
 609         lyxerr << BOOST_CURRENT_FUNCTION
 610                << "[fitcursor = " << fitcursor << ','
 611                << " forceupdate = " << forceupdate
 612                << "]  buffer: " << buffer_ << endl;
 613
 614         // Check needed to survive LyX startup
 615         if (buffer_) {
 616                 // Update macro store
 617                 buffer_->buildMacros();
 618                 // First drawing step
 619
 620                 CoordCache backup;
 621                 std::swap(theCoords, backup);
 622                 theCoords.startUpdating();
 623
 624                 ViewMetricsInfo vi = metrics();
 625
 626                 if (fitcursor && fitCursor()) {
 627                         forceupdate = true;
 628                         vi = metrics();
 629                 }
 630                 if (forceupdate) {
 631                         // Second drawing step
 632                         screen().redraw(*bv_, vi);
 633                 } else {
 634                         // Abort updating of the coord cache - just restore the old one
 635                         std::swap(theCoords, backup);
 636                 }
 637         } else
 638                 screen().greyOut();
 639
 640         // And the scrollbar
 641         updateScrollbar();
 642         bv_->owner()->view_state_changed();
 643 }
 644
 645
 646 // Callback for cursor timer
 647 void BufferView::Pimpl::cursorToggle()
 648 {
 649         if (buffer_) {
 650                 screen().toggleCursor(*bv_);
 651
 652                 // Use this opportunity to deal with any child processes that
 653                 // have finished but are waiting to communicate this fact
 654                 // to the rest of LyX.
 655                 ForkedcallsController & fcc = ForkedcallsController::get();
 656                 if (fcc.processesCompleted())
 657                         fcc.handleCompletedProcesses();
 658         }
 659
 660         cursor_timeout.restart();
 661 }
 662
 663
 664 bool BufferView::Pimpl::available() const
 665 {
 666         return buffer_ && bv_->text();
 667 }
 668
 669
 670 Change const BufferView::Pimpl::getCurrentChange()
 671 {
 672         if (!bv_->buffer()->params().tracking_changes)
 673                 return Change(Change::UNCHANGED);
 674
 675         LyXText * text = bv_->getLyXText();
 676         LCursor & cur = bv_->cursor();
 677
 678         if (!cur.selection())
 679                 return Change(Change::UNCHANGED);
 680
 681         return text->getPar(cur.selBegin().pit()).
 682                         lookupChangeFull(cur.selBegin().pos());
 683 }
 684
 685
 686 void BufferView::Pimpl::savePosition(unsigned int i)
 687 {
 688         if (i >= saved_positions_num)
 689                 return;
 690         BOOST_ASSERT(bv_->cursor().inTexted());
 691         saved_positions[i] = Position(buffer_->fileName(),
 692                                       bv_->cursor().paragraph().id(),
 693                                       bv_->cursor().pos());
 694         if (i > 0)
 695                 owner_->message(bformat(_("Saved bookmark %1$d"), i));
 696 }
 697
 698
 699 void BufferView::Pimpl::restorePosition(unsigned int i)
 700 {
 701         if (i >= saved_positions_num)
 702                 return;
 703
 704         string const fname = saved_positions[i].filename;
 705
 706         bv_->cursor().clearSelection();
 707
 708         if (fname != buffer_->fileName()) {
 709                 Buffer * b = 0;
 710                 if (bufferlist.exists(fname))
 711                         b = bufferlist.getBuffer(fname);
 712                 else {
 713                         b = bufferlist.newBuffer(fname);
 714                         // Don't ask, just load it
 715                         ::loadLyXFile(b, fname);
 716                 }
 717                 if (b)
 718                         setBuffer(b);
 719         }
 720
 721         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 722         if (par == buffer_->par_iterator_end())
 723                 return;
 724
 725         bv_->text()->setCursor(bv_->cursor(), par.pit(),
 726                 min(par->size(), saved_positions[i].par_pos));
 727
 728         if (i > 0)
 729                 owner_->message(bformat(_("Moved to bookmark %1$d"), i));
 730 }
 731
 732
 733 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 734 {
 735         return i < saved_positions_num && !saved_positions[i].filename.empty();
 736 }
 737
 738
 739 void BufferView::Pimpl::switchKeyMap()
 740 {
 741         if (!lyxrc.rtl_support)
 742                 return;
 743
 744         Intl & intl = owner_->getIntl();
 745         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 746                 if (intl.keymap == Intl::PRIMARY)
 747                         intl.KeyMapSec();
 748         } else {
 749                 if (intl.keymap == Intl::SECONDARY)
 750                         intl.KeyMapPrim();
 751         }
 752 }
 753
 754
 755 void BufferView::Pimpl::center()
 756 {
 757         CursorSlice & bot = bv_->cursor().bottom();
 758         lyx::pit_type const pit = bot.pit();
 759         bot.text()->redoParagraph(pit);
 760         Paragraph const & par = bot.text()->paragraphs()[pit];
 761         anchor_ref_ = pit;
 762         offset_ref_ = bv_funcs::coordOffset(bv_->cursor()).y_ + par.ascent()
 763                 - workarea().workHeight() / 2;
 764 }
 765
 766
 767 void BufferView::Pimpl::stuffClipboard(string const & content) const
 768 {
 769         workarea().putClipboard(content);
 770 }
 771
 772
 773 void BufferView::Pimpl::MenuInsertLyXFile(string const & filenm)
 774 {
 775         string filename = filenm;
 776
 777         if (filename.empty()) {
 778                 // Launch a file browser
 779                 string initpath = lyxrc.document_path;
 780
 781                 if (available()) {
 782                         string const trypath = owner_->buffer()->filePath();
 783                         // If directory is writeable, use this as default.
 784                         if (IsDirWriteable(trypath))
 785                                 initpath = trypath;
 786                 }
 787
 788                 FileDialog fileDlg(_("Select LyX document to insert"),
 789                         LFUN_FILE_INSERT,
 790                         make_pair(string(_("Documents|#o#O")),
 791                                   string(lyxrc.document_path)),
 792                         make_pair(string(_("Examples|#E#e")),
 793                                   string(AddPath(package().system_support(), "examples"))));
 794
 795                 FileDialog::Result result =
 796                         fileDlg.open(initpath,
 797                                      FileFilterList(_("LyX Documents (*.lyx)")),
 798                                      string());
 799
 800                 if (result.first == FileDialog::Later)
 801                         return;
 802
 803                 filename = result.second;
 804
 805                 // check selected filename
 806                 if (filename.empty()) {
 807                         owner_->message(_("Canceled."));
 808                         return;
 809                 }
 810         }
 811
 812         // Get absolute path of file and add ".lyx"
 813         // to the filename if necessary
 814         filename = FileSearch(string(), filename, "lyx");
 815
 816         string const disp_fn = MakeDisplayPath(filename);
 817         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 818
 819         bv_->cursor().clearSelection();
 820         bv_->getLyXText()->breakParagraph(bv_->cursor());
 821
 822         BOOST_ASSERT(bv_->cursor().inTexted());
 823
 824         string const fname = MakeAbsPath(filename);
 825         bool const res = bv_->buffer()->readFile(fname, bv_->cursor().pit());
 826         bv_->resize();
 827
 828         string s = res ? _("Document %1$s inserted.")
 829                        : _("Could not insert document %1$s");
 830         owner_->message(bformat(s, disp_fn));
 831 }
 832
 833
 834 void BufferView::Pimpl::trackChanges()
 835 {
 836         Buffer * buf = bv_->buffer();
 837         bool const tracking = buf->params().tracking_changes;
 838
 839         if (!tracking) {
 840                 for_each(buf->par_iterator_begin(),
 841                          buf->par_iterator_end(),
 842                          bind(&Paragraph::trackChanges, _1, Change::UNCHANGED));
 843                 buf->params().tracking_changes = true;
 844
 845                 // We cannot allow undos beyond the freeze point
 846                 buf->undostack().clear();
 847         } else {
 848                 update();
 849                 bv_->text()->setCursor(bv_->cursor(), 0, 0);
 850 #ifdef WITH_WARNINGS
 851 #warning changes FIXME
 852 #endif
 853                 bool const found = lyx::find::findNextChange(bv_);
 854                 if (found) {
 855                         owner_->getDialogs().show("changes");
 856                         return;
 857                 }
 858
 859                 for_each(buf->par_iterator_begin(),
 860                          buf->par_iterator_end(),
 861                          mem_fun_ref(&Paragraph::untrackChanges));
 862
 863                 buf->params().tracking_changes = false;
 864         }
 865
 866         buf->redostack().clear();
 867 }
 868
 869
 870 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd0)
 871 {
 872         lyxerr << BOOST_CURRENT_FUNCTION
 873                << "[ cmd0 " << cmd0 << "]" << endl;
 874
 875         // This is only called for mouse related events including
 876         // LFUN_FILE_OPEN generated by drag-and-drop.
 877         FuncRequest cmd = cmd0;
 878
 879         // Handle drag&drop
 880         if (cmd.action == LFUN_FILE_OPEN) {
 881                 owner_->dispatch(cmd);
 882                 return true;
 883         }
 884
 885         if (!bv_->buffer())
 886                 return false;
 887
 888         LCursor cur(*bv_);
 889         cur.push(bv_->buffer()->inset());
 890         cur.selection() = bv_->cursor().selection();
 891
 892         // Doesn't go through lyxfunc, so we need to update
 893         // the layout choice etc. ourselves
 894
 895         // E.g. Qt mouse press when no buffer
 896         if (!available())
 897                 return false;
 898
 899         screen().hideCursor();
 900
 901         // Either the inset under the cursor or the
 902         // surrounding LyXText will handle this event.
 903
 904         // Build temporary cursor.
 905         cmd.y = min(max(cmd.y,-1), bv_->workHeight());
 906         InsetBase * inset = bv_->text()->editXY(cur, cmd.x, cmd.y);
 907         lyxerr << BOOST_CURRENT_FUNCTION
 908                << " * hit inset at tip: " << inset << endl;
 909         lyxerr << BOOST_CURRENT_FUNCTION
 910                << " * created temp cursor:" << cur << endl;
 911
 912         // Put anchor at the same position.
 913         cur.resetAnchor();
 914
 915         // Try to dispatch to an non-editable inset near this position
 916         // via the temp cursor. If the inset wishes to change the real
 917         // cursor it has to do so explicitly by using
 918         //  cur.bv().cursor() = cur;  (or similar)
 919         if (inset)
 920                 inset->dispatch(cur, cmd);
 921
 922         // Now dispatch to the temporary cursor. If the real cursor should
 923         // be modified, the inset's dispatch has to do so explicitly.
 924         if (!cur.result().dispatched())
 925                 cur.dispatch(cmd);
 926
 927         if (cur.result().dispatched()) {
 928                 // Redraw if requested or necessary.
 929                 update(cur.result().update(), cur.result().update());
 930         }
 931
 932         // See workAreaKeyPress
 933         cursor_timeout.restart();
 934         screen().showCursor(*bv_);
 935
 936         // Skip these when selecting
 937         if (cmd.action != LFUN_MOUSE_MOTION) {
 938                 owner_->updateLayoutChoice();
 939                 owner_->updateToolbars();
 940         }
 941
 942         // Slight hack: this is only called currently when we
 943         // clicked somewhere, so we force through the display
 944         // of the new status here.
 945         owner_->clearMessage();
 946         return true;
 947 }
 948
 949
 950 FuncStatus BufferView::Pimpl::getStatus(FuncRequest const & cmd)
 951 {
 952         Buffer * buf = bv_->buffer();
 953
 954         FuncStatus flag;
 955
 956         switch (cmd.action) {
 957
 958         case LFUN_UNDO:
 959                 flag.enabled(!buf->undostack().empty());
 960                 break;
 961         case LFUN_REDO:
 962                 flag.enabled(!buf->redostack().empty());
 963                 break;
 964         case LFUN_FILE_INSERT:
 965         case LFUN_FILE_INSERT_ASCII_PARA:
 966         case LFUN_FILE_INSERT_ASCII:
 967         case LFUN_FONT_STATE:
 968         case LFUN_INSERT_LABEL:
 969         case LFUN_BOOKMARK_SAVE:
 970         case LFUN_REF_GOTO:
 971         case LFUN_WORD_FIND:
 972         case LFUN_WORD_REPLACE:
 973         case LFUN_MARK_OFF:
 974         case LFUN_MARK_ON:
 975         case LFUN_SETMARK:
 976         case LFUN_CENTER:
 977         case LFUN_WORDS_COUNT:
 978                 flag.enabled(true);
 979                 break;
 980
 981         case LFUN_BOOKMARK_GOTO:
 982                 flag.enabled(bv_->isSavedPosition(convert<unsigned int>(cmd.argument)));
 983                 break;
 984         case LFUN_TRACK_CHANGES:
 985                 flag.enabled(true);
 986                 flag.setOnOff(buf->params().tracking_changes);
 987                 break;
 988
 989         case LFUN_OUTPUT_CHANGES: {
 990                 LaTeXFeatures features(*buf, buf->params(), false);
 991                 flag.enabled(buf && buf->params().tracking_changes
 992                         && features.isAvailable("dvipost"));
 993                 flag.setOnOff(buf->params().output_changes);
 994                 break;
 995         }
 996
 997         case LFUN_MERGE_CHANGES:
 998         case LFUN_ACCEPT_CHANGE: // what about these two
 999         case LFUN_REJECT_CHANGE: // what about these two
1000         case LFUN_ACCEPT_ALL_CHANGES:
1001         case LFUN_REJECT_ALL_CHANGES:
1002                 flag.enabled(buf && buf->params().tracking_changes);
1003                 break;
1004         default:
1005                 flag.enabled(false);
1006         }
1007
1008         return flag;
1009 }
1010
1011
1012
1013 bool BufferView::Pimpl::dispatch(FuncRequest const & cmd)
1014 {
1015         //lyxerr << BOOST_CURRENT_FUNCTION
1016         //       << [ cmd = " << cmd << "]" << endl;
1017
1018         // Make sure that the cached BufferView is correct.
1019         lyxerr[Debug::ACTION] << BOOST_CURRENT_FUNCTION
1020                 << " action[" << cmd.action << ']'
1021                 << " arg[" << cmd.argument << ']'
1022                 << " x[" << cmd.x << ']'
1023                 << " y[" << cmd.y << ']'
1024                 << " button[" << cmd.button() << ']'
1025                 << endl;
1026
1027         LCursor & cur = bv_->cursor();
1028
1029         switch (cmd.action) {
1030
1031         case LFUN_UNDO:
1032                 if (available()) {
1033                         cur.message(_("Undo"));
1034                         cur.clearSelection();
1035                         if (!textUndo(*bv_))
1036                                 cur.message(_("No further undo information"));
1037                         update();
1038                         switchKeyMap();
1039                 }
1040                 break;
1041
1042         case LFUN_REDO:
1043                 if (available()) {
1044                         cur.message(_("Redo"));
1045                         cur.clearSelection();
1046                         if (!textRedo(*bv_))
1047                                 cur.message(_("No further redo information"));
1048                         update();
1049                         switchKeyMap();
1050                 }
1051                 break;
1052
1053         case LFUN_FILE_INSERT:
1054                 MenuInsertLyXFile(cmd.argument);
1055                 break;
1056
1057         case LFUN_FILE_INSERT_ASCII_PARA:
1058                 InsertAsciiFile(bv_, cmd.argument, true);
1059                 break;
1060
1061         case LFUN_FILE_INSERT_ASCII:
1062                 InsertAsciiFile(bv_, cmd.argument, false);
1063                 break;
1064
1065         case LFUN_FONT_STATE:
1066                 cur.message(cur.currentState());
1067                 break;
1068
1069         case LFUN_BOOKMARK_SAVE:
1070                 savePosition(convert<unsigned int>(cmd.argument));
1071                 break;
1072
1073         case LFUN_BOOKMARK_GOTO:
1074                 restorePosition(convert<unsigned int>(cmd.argument));
1075                 break;
1076
1077         case LFUN_REF_GOTO: {
1078                 string label = cmd.argument;
1079                 if (label.empty()) {
1080                         InsetRef * inset =
1081                                 getInsetByCode<InsetRef>(bv_->cursor(),
1082                                                          InsetBase::REF_CODE);
1083                         if (inset) {
1084                                 label = inset->getContents();
1085                                 savePosition(0);
1086                         }
1087                 }
1088
1089                 if (!label.empty())
1090                         bv_->gotoLabel(label);
1091                 break;
1092         }
1093
1094         case LFUN_TRACK_CHANGES:
1095                 trackChanges();
1096                 break;
1097
1098         case LFUN_OUTPUT_CHANGES: {
1099                 Buffer * buf = bv_->buffer();
1100                 bool const state = buf->params().output_changes;
1101                 buf->params().output_changes = !state;
1102                 break;
1103         }
1104
1105         case LFUN_MERGE_CHANGES:
1106                 owner_->getDialogs().show("changes");
1107                 break;
1108
1109         case LFUN_ACCEPT_ALL_CHANGES: {
1110                 bv_->cursor().reset(bv_->buffer()->inset());
1111 #ifdef WITH_WARNINGS
1112 #warning FIXME changes
1113 #endif
1114                 while (lyx::find::findNextChange(bv_))
1115                         bv_->getLyXText()->acceptChange(bv_->cursor());
1116                 update();
1117                 break;
1118         }
1119
1120         case LFUN_REJECT_ALL_CHANGES: {
1121                 bv_->cursor().reset(bv_->buffer()->inset());
1122 #ifdef WITH_WARNINGS
1123 #warning FIXME changes
1124 #endif
1125                 while (lyx::find::findNextChange(bv_))
1126                         bv_->getLyXText()->rejectChange(bv_->cursor());
1127                 break;
1128         }
1129
1130         case LFUN_WORD_FIND:
1131                 lyx::find::find(bv_, cmd);
1132                 break;
1133
1134         case LFUN_WORD_REPLACE:
1135                 lyx::find::replace(bv_, cmd);
1136                 break;
1137
1138         case LFUN_MARK_OFF:
1139                 cur.clearSelection();
1140                 cur.resetAnchor();
1141                 cur.message(N_("Mark off"));
1142                 break;
1143
1144         case LFUN_MARK_ON:
1145                 cur.clearSelection();
1146                 cur.mark() = true;
1147                 cur.resetAnchor();
1148                 cur.message(N_("Mark on"));
1149                 break;
1150
1151         case LFUN_SETMARK:
1152                 cur.clearSelection();
1153                 if (cur.mark()) {
1154                         cur.mark() = false;
1155                         cur.message(N_("Mark removed"));
1156                 } else {
1157                         cur.mark() = true;
1158                         cur.message(N_("Mark set"));
1159                 }
1160                 cur.resetAnchor();
1161                 break;
1162
1163         case LFUN_CENTER:
1164                 bv_->center();
1165                 break;
1166
1167         case LFUN_WORDS_COUNT: {
1168                 DocIterator from, to;
1169                 if (cur.selection()) {
1170                         from = cur.selectionBegin();
1171                         to = cur.selectionEnd();
1172                 } else {
1173                         from = doc_iterator_begin(bv_->buffer()->inset());
1174                         to = doc_iterator_end(bv_->buffer()->inset());
1175                 }
1176                 int const count = countWords(from, to);
1177                 string message;
1178                 if (count != 1) {
1179                         if (cur.selection())
1180                                 message = bformat(_("%1$d words in selection."),
1181                                           count);
1182                                 else
1183                                         message = bformat(_("%1$d words in document."),
1184                                                           count);
1185                 }
1186                 else {
1187                         if (cur.selection())
1188                                 message = _("One word in selection.");
1189                         else
1190                                 message = _("One word in document.");
1191                 }
1192
1193                 Alert::information(_("Count words"), message);
1194         }
1195                 break;
1196         default:
1197                 return false;
1198         }
1199
1200         return true;
1201 }
1202
1203
1204 ViewMetricsInfo BufferView::Pimpl::metrics()
1205 {
1206         // Remove old position cache
1207         theCoords.clear();
1208         BufferView & bv = *bv_;
1209         LyXText * const text = bv.text();
1210         if (anchor_ref_ > int(text->paragraphs().size() - 1)) {
1211                 anchor_ref_ = int(text->paragraphs().size() - 1);
1212                 offset_ref_ = 0;
1213         }
1214
1215         lyx::pit_type const pit = anchor_ref_;
1216         int pit1 = pit;
1217         int pit2 = pit;
1218         size_t const npit = text->paragraphs().size();
1219
1220         lyxerr << BOOST_CURRENT_FUNCTION
1221                << " npit: " << npit
1222                << " pit1: " << pit1
1223                << " pit2: " << pit2
1224                << endl;
1225
1226         // Rebreak anchor par
1227         text->redoParagraph(pit);
1228         int y0 = text->getPar(pit1).ascent() - offset_ref_;
1229
1230         // Redo paragraphs above cursor if necessary
1231         int y1 = y0;
1232         while (y1 > 0 && pit1 > 0) {
1233                 y1 -= text->getPar(pit1).ascent();
1234                 --pit1;
1235                 text->redoParagraph(pit1);
1236                 y1 -= text->getPar(pit1).descent();
1237         }
1238
1239
1240         // Take care of ascent of first line
1241         y1 -= text->getPar(pit1).ascent();
1242
1243         // Normalize anchor for next time
1244         anchor_ref_ = pit1;
1245         offset_ref_ = -y1;
1246
1247         // Grey at the beginning is ugly
1248         if (pit1 == 0 && y1 > 0) {
1249                 y0 -= y1;
1250                 y1 = 0;
1251                 anchor_ref_ = 0;
1252         }
1253
1254         // Redo paragraphs below cursor if necessary
1255         int y2 = y0;
1256         while (y2 < bv.workHeight() && pit2 < int(npit) - 1) {
1257                 y2 += text->getPar(pit2).descent();
1258                 ++pit2;
1259                 text->redoParagraph(pit2);
1260                 y2 += text->getPar(pit2).ascent();
1261         }
1262
1263         // Take care of descent of last line
1264         y2 += text->getPar(pit2).descent();
1265
1266         // The coordinates of all these paragraphs are correct, cache them
1267         int y = y1;
1268         for (lyx::pit_type pit = pit1; pit <= pit2; ++pit) {
1269                 y += text->getPar(pit).ascent();
1270                 theCoords.parPos()[text][pit] = Point(0, y);
1271                 y += text->getPar(pit).descent();
1272         }
1273
1274         lyxerr << BOOST_CURRENT_FUNCTION
1275                << " y1: " << y1
1276                << " y2: " << y2
1277                << endl;
1278
1279         return ViewMetricsInfo(pit1, pit2, y1, y2);
1280 }