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: " << 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 = 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(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         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 = cursor_;
 536
 537         if (!cur.selection()) {
 538                 xsel_cache_.set = false;
 539                 return;
 540         }
 541
 542         if (!xsel_cache_.set ||
 543             cur.top() != xsel_cache_.cursor ||
 544             cur.anchor_.top() != xsel_cache_.anchor)
 545         {
 546                 xsel_cache_.cursor = cur.top();
 547                 xsel_cache_.anchor = cur.anchor_.top();
 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                 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_, cursor_) == bv_funcs::CUR_INSIDE) {
 595                 LyXFont const font = cursor_.getFont();
 596                 int const asc = font_metrics::maxAscent(font);
 597                 int const des = font_metrics::maxDescent(font);
 598                 Point p = bv_funcs::getPos(cursor_);
 599                 if (p.y_ - asc >= 0 && p.y_ + des < workarea().workHeight())
 600                         return false;
 601         }
 602         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         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 (!buffer_->params().tracking_changes)
 673                 return Change(Change::UNCHANGED);
 674
 675         LyXText * text = bv_->getLyXText();
 676         LCursor & cur = 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(cursor_.inTexted());
 691         saved_positions[i] = Position(buffer_->fileName(),
 692                                       cursor_.paragraph().id(),
 693                                       cursor_.pos());
 694         if (i > 0)
 695                 owner_->message(bformat(_("Saved bookmark %1$d"), i));
 696 }
 697
 698
 699 void BufferView::Pimpl::restorePosition(unsigned int i)
 700 {
 701         if (i >= saved_positions_num)
 702                 return;
 703
 704         string const fname = saved_positions[i].filename;
 705
 706         cursor_.clearSelection();
 707
 708         if (fname != buffer_->fileName()) {
 709                 Buffer * b = 0;
 710                 if (bufferlist.exists(fname))
 711                         b = bufferlist.getBuffer(fname);
 712                 else {
 713                         b = bufferlist.newBuffer(fname);
 714                         // Don't ask, just load it
 715                         ::loadLyXFile(b, fname);
 716                 }
 717                 if (b)
 718                         setBuffer(b);
 719         }
 720
 721         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 722         if (par == buffer_->par_iterator_end())
 723                 return;
 724
 725         bv_->text()->setCursor(cursor_, par.pit(),
 726                 min(par->size(), saved_positions[i].par_pos));
 727
 728         if (i > 0)
 729                 owner_->message(bformat(_("Moved to bookmark %1$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 = 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(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$s..."), disp_fn));
 818
 819         cursor_.clearSelection();
 820         bv_->getLyXText()->breakParagraph(cursor_);
 821
 822         BOOST_ASSERT(cursor_.inTexted());
 823
 824         string const fname = MakeAbsPath(filename);
 825         bool const res = buffer_->readFile(fname, cursor_.pit());
 826         resizeCurrentBuffer();
 827
 828         string s = res ? _("Document %1$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         bool const tracking = buffer_->params().tracking_changes;
 837
 838         if (!tracking) {
 839                 for_each(buffer_->par_iterator_begin(),
 840                          buffer_->par_iterator_end(),
 841                          bind(&Paragraph::trackChanges, _1, Change::UNCHANGED));
 842                 buffer_->params().tracking_changes = true;
 843
 844                 // We cannot allow undos beyond the freeze point
 845                 buffer_->undostack().clear();
 846         } else {
 847                 update();
 848                 bv_->text()->setCursor(cursor_, 0, 0);
 849 #ifdef WITH_WARNINGS
 850 #warning changes FIXME
 851 #endif
 852                 bool const found = lyx::find::findNextChange(bv_);
 853                 if (found) {
 854                         owner_->getDialogs().show("changes");
 855                         return;
 856                 }
 857
 858                 for_each(buffer_->par_iterator_begin(),
 859                          buffer_->par_iterator_end(),
 860                          mem_fun_ref(&Paragraph::untrackChanges));
 861
 862                 buffer_->params().tracking_changes = false;
 863         }
 864
 865         buffer_->redostack().clear();
 866 }
 867
 868
 869 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd0)
 870 {
 871         lyxerr << BOOST_CURRENT_FUNCTION
 872                << "[ cmd0 " << cmd0 << "]" << endl;
 873
 874         // This is only called for mouse related events including
 875         // LFUN_FILE_OPEN generated by drag-and-drop.
 876         FuncRequest cmd = cmd0;
 877
 878         // Handle drag&drop
 879         if (cmd.action == LFUN_FILE_OPEN) {
 880                 owner_->dispatch(cmd);
 881                 return true;
 882         }
 883
 884         if (!buffer_)
 885                 return false;
 886
 887         LCursor cur(*bv_);
 888         cur.push(buffer_->inset());
 889         cur.selection() = cursor_.selection();
 890
 891         // Doesn't go through lyxfunc, so we need to update
 892         // the layout choice etc. ourselves
 893
 894         // E.g. Qt mouse press when no buffer
 895         if (!available())
 896                 return false;
 897
 898         screen().hideCursor();
 899
 900         // Either the inset under the cursor or the
 901         // surrounding LyXText will handle this event.
 902
 903         // Build temporary cursor.
 904         cmd.y = min(max(cmd.y,-1), workarea().workHeight());
 905         InsetBase * inset = bv_->text()->editXY(cur, cmd.x, cmd.y);
 906         lyxerr << BOOST_CURRENT_FUNCTION
 907                << " * hit inset at tip: " << inset << endl;
 908         lyxerr << BOOST_CURRENT_FUNCTION
 909                << " * created temp cursor:" << cur << endl;
 910
 911         // Put anchor at the same position.
 912         cur.resetAnchor();
 913
 914         // Try to dispatch to an non-editable inset near this position
 915         // via the temp cursor. If the inset wishes to change the real
 916         // cursor it has to do so explicitly by using
 917         //  cur.bv().cursor() = cur;  (or similar)
 918         if (inset)
 919                 inset->dispatch(cur, cmd);
 920
 921         // Now dispatch to the temporary cursor. If the real cursor should
 922         // be modified, the inset's dispatch has to do so explicitly.
 923         if (!cur.result().dispatched())
 924                 cur.dispatch(cmd);
 925
 926         if (cur.result().dispatched()) {
 927                 // Redraw if requested or necessary.
 928                 update(cur.result().update(), cur.result().update());
 929         }
 930
 931         // See workAreaKeyPress
 932         cursor_timeout.restart();
 933         screen().showCursor(*bv_);
 934
 935         // Skip these when selecting
 936         if (cmd.action != LFUN_MOUSE_MOTION) {
 937                 owner_->updateLayoutChoice();
 938                 owner_->updateToolbars();
 939         }
 940
 941         // Slight hack: this is only called currently when we
 942         // clicked somewhere, so we force through the display
 943         // of the new status here.
 944         owner_->clearMessage();
 945         return true;
 946 }
 947
 948
 949 FuncStatus BufferView::Pimpl::getStatus(FuncRequest const & cmd)
 950 {
 951         FuncStatus flag;
 952
 953         switch (cmd.action) {
 954
 955         case LFUN_UNDO:
 956                 flag.enabled(!buffer_->undostack().empty());
 957                 break;
 958         case LFUN_REDO:
 959                 flag.enabled(!buffer_->redostack().empty());
 960                 break;
 961         case LFUN_FILE_INSERT:
 962         case LFUN_FILE_INSERT_ASCII_PARA:
 963         case LFUN_FILE_INSERT_ASCII:
 964         case LFUN_FONT_STATE:
 965         case LFUN_INSERT_LABEL:
 966         case LFUN_BOOKMARK_SAVE:
 967         case LFUN_REF_GOTO:
 968         case LFUN_GOTO_PARAGRAPH:
 969         case LFUN_WORD_FIND:
 970         case LFUN_WORD_REPLACE:
 971         case LFUN_MARK_OFF:
 972         case LFUN_MARK_ON:
 973         case LFUN_SETMARK:
 974         case LFUN_CENTER:
 975         case LFUN_WORDS_COUNT:
 976                 flag.enabled(true);
 977                 break;
 978
 979         case LFUN_BOOKMARK_GOTO:
 980                 flag.enabled(isSavedPosition(convert<unsigned int>(cmd.argument)));
 981                 break;
 982         case LFUN_TRACK_CHANGES:
 983                 flag.enabled(true);
 984                 flag.setOnOff(buffer_->params().tracking_changes);
 985                 break;
 986
 987         case LFUN_OUTPUT_CHANGES: {
 988                 LaTeXFeatures features(*buffer_, buffer_->params(), false);
 989                 flag.enabled(buffer_ && buffer_->params().tracking_changes
 990                         && features.isAvailable("dvipost"));
 991                 flag.setOnOff(buffer_->params().output_changes);
 992                 break;
 993         }
 994
 995         case LFUN_MERGE_CHANGES:
 996         case LFUN_ACCEPT_CHANGE: // what about these two
 997         case LFUN_REJECT_CHANGE: // what about these two
 998         case LFUN_ACCEPT_ALL_CHANGES:
 999         case LFUN_REJECT_ALL_CHANGES:
1000                 flag.enabled(buffer_ && buffer_->params().tracking_changes);
1001                 break;
1002         default:
1003                 flag.enabled(false);
1004         }
1005
1006         return flag;
1007 }
1008
1009
1010
1011 bool BufferView::Pimpl::dispatch(FuncRequest const & cmd)
1012 {
1013         //lyxerr << BOOST_CURRENT_FUNCTION
1014         //       << [ cmd = " << cmd << "]" << endl;
1015
1016         // Make sure that the cached BufferView is correct.
1017         lyxerr[Debug::ACTION] << BOOST_CURRENT_FUNCTION
1018                 << " action[" << cmd.action << ']'
1019                 << " arg[" << cmd.argument << ']'
1020                 << " x[" << cmd.x << ']'
1021                 << " y[" << cmd.y << ']'
1022                 << " button[" << cmd.button() << ']'
1023                 << endl;
1024
1025         LCursor & cur = cursor_;
1026
1027         switch (cmd.action) {
1028
1029         case LFUN_UNDO:
1030                 if (available()) {
1031                         cur.message(_("Undo"));
1032                         cur.clearSelection();
1033                         if (!textUndo(*bv_))
1034                                 cur.message(_("No further undo information"));
1035                         update();
1036                         switchKeyMap();
1037                 }
1038                 break;
1039
1040         case LFUN_REDO:
1041                 if (available()) {
1042                         cur.message(_("Redo"));
1043                         cur.clearSelection();
1044                         if (!textRedo(*bv_))
1045                                 cur.message(_("No further redo information"));
1046                         update();
1047                         switchKeyMap();
1048                 }
1049                 break;
1050
1051         case LFUN_FILE_INSERT:
1052                 MenuInsertLyXFile(cmd.argument);
1053                 break;
1054
1055         case LFUN_FILE_INSERT_ASCII_PARA:
1056                 InsertAsciiFile(bv_, cmd.argument, true);
1057                 break;
1058
1059         case LFUN_FILE_INSERT_ASCII:
1060                 InsertAsciiFile(bv_, cmd.argument, false);
1061                 break;
1062
1063         case LFUN_FONT_STATE:
1064                 cur.message(cur.currentState());
1065                 break;
1066
1067         case LFUN_BOOKMARK_SAVE:
1068                 savePosition(convert<unsigned int>(cmd.argument));
1069                 break;
1070
1071         case LFUN_BOOKMARK_GOTO:
1072                 restorePosition(convert<unsigned int>(cmd.argument));
1073                 break;
1074
1075         case LFUN_REF_GOTO: {
1076                 string label = cmd.argument;
1077                 if (label.empty()) {
1078                         InsetRef * inset =
1079                                 getInsetByCode<InsetRef>(cursor_,
1080                                                          InsetBase::REF_CODE);
1081                         if (inset) {
1082                                 label = inset->getContents();
1083                                 savePosition(0);
1084                         }
1085                 }
1086
1087                 if (!label.empty())
1088                         bv_->gotoLabel(label);
1089                 break;
1090         }
1091
1092         case LFUN_GOTO_PARAGRAPH: {
1093                 int const id = convert<int>(cmd.argument);
1094                 ParIterator par = buffer_->getParFromID(id);
1095                 if (par == buffer_->par_iterator_end()) {
1096                         lyxerr[Debug::INFO] << "No matching paragraph found! ["
1097                                             << id << ']' << endl;
1098                         break;
1099                 } else {
1100                         lyxerr[Debug::INFO] << "Paragraph " << par->id()
1101                                             << " found." << endl;
1102                 }
1103
1104                 // Set the cursor
1105                 bv_->setCursor(par, 0);
1106
1107                 update();
1108                 switchKeyMap();
1109                 break;
1110         }
1111
1112         case LFUN_TRACK_CHANGES:
1113                 trackChanges();
1114                 break;
1115
1116         case LFUN_OUTPUT_CHANGES: {
1117                 bool const state = buffer_->params().output_changes;
1118                 buffer_->params().output_changes = !state;
1119                 break;
1120         }
1121
1122         case LFUN_MERGE_CHANGES:
1123                 owner_->getDialogs().show("changes");
1124                 break;
1125
1126         case LFUN_ACCEPT_ALL_CHANGES: {
1127                 cursor_.reset(buffer_->inset());
1128 #ifdef WITH_WARNINGS
1129 #warning FIXME changes
1130 #endif
1131                 while (lyx::find::findNextChange(bv_))
1132                         bv_->getLyXText()->acceptChange(cursor_);
1133                 update();
1134                 break;
1135         }
1136
1137         case LFUN_REJECT_ALL_CHANGES: {
1138                 cursor_.reset(buffer_->inset());
1139 #ifdef WITH_WARNINGS
1140 #warning FIXME changes
1141 #endif
1142                 while (lyx::find::findNextChange(bv_))
1143                         bv_->getLyXText()->rejectChange(cursor_);
1144                 break;
1145         }
1146
1147         case LFUN_WORD_FIND:
1148                 lyx::find::find(bv_, cmd);
1149                 break;
1150
1151         case LFUN_WORD_REPLACE:
1152                 lyx::find::replace(bv_, cmd);
1153                 break;
1154
1155         case LFUN_MARK_OFF:
1156                 cur.clearSelection();
1157                 cur.resetAnchor();
1158                 cur.message(N_("Mark off"));
1159                 break;
1160
1161         case LFUN_MARK_ON:
1162                 cur.clearSelection();
1163                 cur.mark() = true;
1164                 cur.resetAnchor();
1165                 cur.message(N_("Mark on"));
1166                 break;
1167
1168         case LFUN_SETMARK:
1169                 cur.clearSelection();
1170                 if (cur.mark()) {
1171                         cur.mark() = false;
1172                         cur.message(N_("Mark removed"));
1173                 } else {
1174                         cur.mark() = true;
1175                         cur.message(N_("Mark set"));
1176                 }
1177                 cur.resetAnchor();
1178                 break;
1179
1180         case LFUN_CENTER:
1181                 center();
1182                 break;
1183
1184         case LFUN_WORDS_COUNT: {
1185                 DocIterator from, to;
1186                 if (cur.selection()) {
1187                         from = cur.selectionBegin();
1188                         to = cur.selectionEnd();
1189                 } else {
1190                         from = doc_iterator_begin(buffer_->inset());
1191                         to = doc_iterator_end(buffer_->inset());
1192                 }
1193                 int const count = countWords(from, to);
1194                 string message;
1195                 if (count != 1) {
1196                         if (cur.selection())
1197                                 message = bformat(_("%1$d words in selection."),
1198                                           count);
1199                                 else
1200                                         message = bformat(_("%1$d words in document."),
1201                                                           count);
1202                 }
1203                 else {
1204                         if (cur.selection())
1205                                 message = _("One word in selection.");
1206                         else
1207                                 message = _("One word in document.");
1208                 }
1209
1210                 Alert::information(_("Count words"), message);
1211         }
1212                 break;
1213         default:
1214                 return false;
1215         }
1216
1217         return true;
1218 }
1219
1220
1221 ViewMetricsInfo BufferView::Pimpl::metrics()
1222 {
1223         // Remove old position cache
1224         theCoords.clear();
1225         BufferView & bv = *bv_;
1226         LyXText * const text = bv.text();
1227         if (anchor_ref_ > int(text->paragraphs().size() - 1)) {
1228                 anchor_ref_ = int(text->paragraphs().size() - 1);
1229                 offset_ref_ = 0;
1230         }
1231
1232         lyx::pit_type const pit = anchor_ref_;
1233         int pit1 = pit;
1234         int pit2 = pit;
1235         size_t const npit = text->paragraphs().size();
1236
1237         lyxerr << BOOST_CURRENT_FUNCTION
1238                << " npit: " << npit
1239                << " pit1: " << pit1
1240                << " pit2: " << pit2
1241                << endl;
1242
1243         // Rebreak anchor par
1244         text->redoParagraph(pit);
1245         int y0 = text->getPar(pit1).ascent() - offset_ref_;
1246
1247         // Redo paragraphs above cursor if necessary
1248         int y1 = y0;
1249         while (y1 > 0 && pit1 > 0) {
1250                 y1 -= text->getPar(pit1).ascent();
1251                 --pit1;
1252                 text->redoParagraph(pit1);
1253                 y1 -= text->getPar(pit1).descent();
1254         }
1255
1256
1257         // Take care of ascent of first line
1258         y1 -= text->getPar(pit1).ascent();
1259
1260         // Normalize anchor for next time
1261         anchor_ref_ = pit1;
1262         offset_ref_ = -y1;
1263
1264         // Grey at the beginning is ugly
1265         if (pit1 == 0 && y1 > 0) {
1266                 y0 -= y1;
1267                 y1 = 0;
1268                 anchor_ref_ = 0;
1269         }
1270
1271         // Redo paragraphs below cursor if necessary
1272         int y2 = y0;
1273         while (y2 < bv.workHeight() && pit2 < int(npit) - 1) {
1274                 y2 += text->getPar(pit2).descent();
1275                 ++pit2;
1276                 text->redoParagraph(pit2);
1277                 y2 += text->getPar(pit2).ascent();
1278         }
1279
1280         // Take care of descent of last line
1281         y2 += text->getPar(pit2).descent();
1282
1283         // The coordinates of all these paragraphs are correct, cache them
1284         int y = y1;
1285         for (lyx::pit_type pit = pit1; pit <= pit2; ++pit) {
1286                 y += text->getPar(pit).ascent();
1287                 theCoords.parPos()[text][pit] = Point(0, y);
1288                 y += text->getPar(pit).descent();
1289         }
1290
1291         lyxerr << BOOST_CURRENT_FUNCTION
1292                << " y1: " << y1
1293                << " y2: " << y2
1294                << endl;
1295
1296         return ViewMetricsInfo(pit1, pit2, y1, y2);
1297 }