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 "lyx_cb.h" // added for Dispatch functions
  38 #include "lyx_main.h"
  39 #include "lyxfind.h"
  40 #include "lyxfunc.h"
  41 #include "lyxtext.h"
  42 #include "lyxrc.h"
  43 #include "lastfiles.h"
  44 #include "metricsinfo.h"
  45 #include "paragraph.h"
  46 #include "paragraph_funcs.h"
  47 #include "ParagraphParameters.h"
  48 #include "pariterator.h"
  49 #include "rowpainter.h"
  50 #include "undo.h"
  51 #include "vspace.h"
  52
  53 #include "insets/insetref.h"
  54 #include "insets/insettext.h"
  55
  56 #include "frontends/Alert.h"
  57 #include "frontends/Dialogs.h"
  58 #include "frontends/FileDialog.h"
  59 #include "frontends/LyXView.h"
  60 #include "frontends/LyXScreenFactory.h"
  61 #include "frontends/screen.h"
  62 #include "frontends/WorkArea.h"
  63 #include "frontends/WorkAreaFactory.h"
  64
  65 #include "graphics/Previews.h"
  66
  67 #include "support/filefilterlist.h"
  68 #include "support/filetools.h"
  69 #include "support/forkedcontr.h"
  70 #include "support/path_defines.h"
  71 #include "support/tostr.h"
  72 #include "support/types.h"
  73
  74 #include <boost/bind.hpp>
  75
  76 #include <functional>
  77
  78 using lyx::pos_type;
  79
  80 using lyx::support::AddPath;
  81 using lyx::support::bformat;
  82 using lyx::support::FileFilterList;
  83 using lyx::support::FileSearch;
  84 using lyx::support::ForkedcallsController;
  85 using lyx::support::IsDirWriteable;
  86 using lyx::support::MakeDisplayPath;
  87 using lyx::support::MakeAbsPath;
  88 using lyx::support::strToUnsignedInt;
  89 using lyx::support::system_lyxdir;
  90
  91 using std::endl;
  92 using std::istringstream;
  93 using std::make_pair;
  94 using std::min;
  95 using std::max;
  96 using std::string;
  97 using std::mem_fun_ref;
  98
  99
 100 extern BufferList bufferlist;
 101
 102
 103 namespace {
 104
 105 unsigned int const saved_positions_num = 20;
 106
 107 // All the below connection objects are needed because of a bug in some
 108 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
 109 // to these connections we avoid a segfault upon startup, and also at exit.
 110 // (Lgb)
 111
 112 boost::signals::connection dispatchcon;
 113 boost::signals::connection timecon;
 114 boost::signals::connection doccon;
 115 boost::signals::connection resizecon;
 116 boost::signals::connection kpresscon;
 117 boost::signals::connection selectioncon;
 118 boost::signals::connection lostcon;
 119
 120
 121 /// Get next inset of this class from current cursor position
 122 template <class T>
 123 T * getInsetByCode(LCursor & cur, InsetBase::Code code)
 124 {
 125         T * inset = 0;
 126         DocIterator it = cur;
 127         if (it.nextInset() &&
 128             it.nextInset()->lyxCode() == code) {
 129                 inset = static_cast<T*>(it.nextInset());
 130         }
 131         return inset;
 132 }
 133
 134
 135 } // anon namespace
 136
 137
 138 BufferView::Pimpl::Pimpl(BufferView & bv, LyXView * owner,
 139                          int width, int height)
 140         : bv_(&bv), owner_(owner), buffer_(0), cursor_timeout(400),
 141           using_xterm_cursor(false), cursor_(bv) ,
 142           anchor_ref_(0), offset_ref_(0)
 143 {
 144         xsel_cache_.set = false;
 145
 146         workarea_.reset(WorkAreaFactory::create(*owner_, width, height));
 147         screen_.reset(LyXScreenFactory::create(workarea()));
 148
 149         // Setup the signals
 150         doccon = workarea().scrollDocView
 151                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 152         resizecon = workarea().workAreaResize
 153                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 154         dispatchcon = workarea().dispatch
 155                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 156         kpresscon = workarea().workAreaKeyPress
 157                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 158         selectioncon = workarea().selectionRequested
 159                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 160         lostcon = workarea().selectionLost
 161                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 162
 163         timecon = cursor_timeout.timeout
 164                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 165         cursor_timeout.start();
 166         saved_positions.resize(saved_positions_num);
 167 }
 168
 169
 170 void BufferView::Pimpl::addError(ErrorItem const & ei)
 171 {
 172         errorlist_.push_back(ei);
 173 }
 174
 175
 176 void BufferView::Pimpl::showReadonly(bool)
 177 {
 178         owner_->updateWindowTitle();
 179         owner_->getDialogs().updateBufferDependent(false);
 180 }
 181
 182
 183 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 184 {
 185         if (errorConnection_.connected())
 186                 disconnectBuffer();
 187
 188         errorConnection_ =
 189                 buf.error.connect(
 190                         boost::bind(&BufferView::Pimpl::addError, this, _1));
 191
 192         messageConnection_ =
 193                 buf.message.connect(
 194                         boost::bind(&LyXView::message, owner_, _1));
 195
 196         busyConnection_ =
 197                 buf.busy.connect(
 198                         boost::bind(&LyXView::busy, owner_, _1));
 199
 200         titleConnection_ =
 201                 buf.updateTitles.connect(
 202                         boost::bind(&LyXView::updateWindowTitle, owner_));
 203
 204         timerConnection_ =
 205                 buf.resetAutosaveTimers.connect(
 206                         boost::bind(&LyXView::resetAutosaveTimer, owner_));
 207
 208         readonlyConnection_ =
 209                 buf.readonly.connect(
 210                         boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 211
 212         closingConnection_ =
 213                 buf.closing.connect(
 214                         boost::bind(&BufferView::Pimpl::setBuffer, this, (Buffer *)0));
 215 }
 216
 217
 218 void BufferView::Pimpl::disconnectBuffer()
 219 {
 220         errorConnection_.disconnect();
 221         messageConnection_.disconnect();
 222         busyConnection_.disconnect();
 223         titleConnection_.disconnect();
 224         timerConnection_.disconnect();
 225         readonlyConnection_.disconnect();
 226         closingConnection_.disconnect();
 227 }
 228
 229
 230 void BufferView::Pimpl::newFile(string const & filename, string const & tname,
 231         bool isNamed)
 232 {
 233         setBuffer(::newFile(filename, tname, isNamed));
 234 }
 235
 236
 237 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 238 {
 239         // get absolute path of file and add ".lyx" to the filename if
 240         // necessary
 241         string s = FileSearch(string(), filename, "lyx");
 242
 243         bool const found = !s.empty();
 244
 245         if (!found)
 246                 s = filename;
 247
 248         // file already open?
 249         if (bufferlist.exists(s)) {
 250                 string const file = MakeDisplayPath(s, 20);
 251                 string text = bformat(_("The document %1$s is already "
 252                                         "loaded.\n\nDo you want to revert "
 253                                         "to the saved version?"), file);
 254                 int const ret = Alert::prompt(_("Revert to saved document?"),
 255                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 256
 257                 if (ret != 0) {
 258                         setBuffer(bufferlist.getBuffer(s));
 259                         return true;
 260                 }
 261                 // FIXME: should be LFUN_REVERT
 262                 if (!bufferlist.close(bufferlist.getBuffer(s), false))
 263                         return false;
 264                 // Fall through to new load. (Asger)
 265         }
 266
 267         Buffer * b;
 268
 269         if (found) {
 270                 b = bufferlist.newBuffer(s);
 271                 connectBuffer(*b);
 272                 if (!::loadLyXFile(b, s)) {
 273                         bufferlist.release(b);
 274                         return false;
 275                 }
 276         } else {
 277                 string text = bformat(_("The document %1$s does not yet "
 278                                         "exist.\n\nDo you want to create "
 279                                         "a new document?"), s);
 280                 int const ret = Alert::prompt(_("Create new document?"),
 281                          text, 0, 1, _("&Create"), _("Cancel"));
 282
 283                 if (ret == 0)
 284                         b = ::newFile(s, string(), true);
 285                 else
 286                         return false;
 287         }
 288
 289         setBuffer(b);
 290         bv_->showErrorList(_("Parse"));
 291
 292         if (tolastfiles)
 293                 LyX::ref().lastfiles().newFile(b->fileName());
 294
 295         return true;
 296 }
 297
 298
 299 WorkArea & BufferView::Pimpl::workarea() const
 300 {
 301         return *workarea_.get();
 302 }
 303
 304
 305 LyXScreen & BufferView::Pimpl::screen() const
 306 {
 307         return *screen_.get();
 308 }
 309
 310
 311 Painter & BufferView::Pimpl::painter() const
 312 {
 313         return workarea().getPainter();
 314 }
 315
 316
 317 void BufferView::Pimpl::setBuffer(Buffer * b)
 318 {
 319         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 320                             << b << ')' << endl;
 321         if (buffer_)
 322                 disconnectBuffer();
 323
 324         // if we are closing current buffer, switch to the first in
 325         // buffer list.
 326         if (!b) {
 327                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 328                 // we are closing the buffer, use the first buffer as current
 329                 buffer_ = bufferlist.first();
 330                 owner_->getDialogs().hideBufferDependent();
 331         } else {
 332                 // set current buffer
 333                 buffer_ = b;
 334         }
 335
 336         // reset old cursor
 337         cursor_ = LCursor(*bv_);
 338         anchor_ref_ = 0;
 339         offset_ref_ = 0;
 340
 341
 342         // if we're quitting lyx, don't bother updating stuff
 343         if (quitting)
 344                 return;
 345
 346         if (buffer_) {
 347                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 348                 connectBuffer(*buffer_);
 349
 350                 cursor_.push(buffer_->inset());
 351                 cursor_.resetAnchor();
 352                 buffer_->text().init(bv_);
 353                 buffer_->text().setCurrentFont(cursor_);
 354
 355                 // Buffer-dependent dialogs should be updated or
 356                 // hidden. This should go here because some dialogs (eg ToC)
 357                 // require bv_->text.
 358                 owner_->getDialogs().updateBufferDependent(true);
 359         }
 360
 361         update();
 362         updateScrollbar();
 363         owner_->updateMenubar();
 364         owner_->updateToolbars();
 365         owner_->updateLayoutChoice();
 366         owner_->updateWindowTitle();
 367
 368         // This is done after the layout combox has been populated
 369         if (buffer_)
 370                 owner_->setLayout(cursor_.paragraph().layout()->name());
 371
 372         if (buffer_ && lyx::graphics::Previews::status() != LyXRC::PREVIEW_OFF)
 373                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 374 }
 375
 376
 377 void BufferView::Pimpl::resizeCurrentBuffer()
 378 {
 379         lyxerr[Debug::DEBUG] << "resizeCurrentBuffer" << endl;
 380         owner_->busy(true);
 381         owner_->message(_("Formatting document..."));
 382
 383         LyXText * text = bv_->text();
 384         if (!text)
 385                 return;
 386
 387         text->init(bv_);
 388         update();
 389
 390         switchKeyMap();
 391         owner_->busy(false);
 392
 393         // reset the "Formatting..." message
 394         owner_->clearMessage();
 395
 396         updateScrollbar();
 397 }
 398
 399
 400 void BufferView::Pimpl::updateScrollbar()
 401 {
 402         if (!bv_->text()) {
 403                 lyxerr[Debug::DEBUG] << "no text in updateScrollbar" << endl;
 404                 workarea().setScrollbarParams(0, 0, 0);
 405                 return;
 406         }
 407
 408         LyXText & t = *bv_->text();
 409         if (anchor_ref_ >  int(t.paragraphs().size()) - 1) {
 410                 anchor_ref_ = int(t.paragraphs().size()) - 1;
 411                 offset_ref_ = 0;
 412         }
 413
 414         lyxerr[Debug::GUI]
 415                 << "Updating scrollbar: height: " << t.paragraphs().size()
 416                 << " curr par: " << bv_->cursor().bottom().pit()
 417                 << " default height " << defaultRowHeight() << endl;
 418
 419         //it would be better to fix the scrollbar to understand
 420         //values in [0..1] and divide everything by wh
 421         int const wh = workarea().workHeight() / 4;
 422         int const h = t.getPar(anchor_ref_).height();
 423         workarea().setScrollbarParams(t.paragraphs().size() * wh, anchor_ref_ * wh + int(offset_ref_ * wh / float(h)), int (wh * defaultRowHeight() / float(h)));
 424 //      workarea().setScrollbarParams(t.paragraphs().size(), anchor_ref_, 1);
 425 }
 426
 427
 428 void BufferView::Pimpl::scrollDocView(int value)
 429 {
 430         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 431
 432         if (!buffer_)
 433                 return;
 434
 435         screen().hideCursor();
 436
 437         int const wh = workarea().workHeight() / 4;
 438
 439         LyXText & t = *bv_->text();
 440
 441         float const bar = value / float(wh * t.paragraphs().size());
 442
 443         anchor_ref_ = int(bar * t.paragraphs().size());
 444         t.redoParagraph(anchor_ref_);
 445         int const h = t.getPar(anchor_ref_).height();
 446         offset_ref_ = int((bar * t.paragraphs().size() - anchor_ref_) * h);
 447         lyxerr << "scrolling: " << value << std::endl;
 448         update();
 449
 450         if (!lyxrc.cursor_follows_scrollbar)
 451                 return;
 452
 453         int const height = 2 * defaultRowHeight();
 454         int const first = height;
 455         int const last = workarea().workHeight() - height;
 456         LCursor & cur = bv_->cursor();
 457
 458         bv_funcs::CurStatus st = bv_funcs::status(bv_, cur);
 459
 460         switch (st) {
 461         case bv_funcs::CUR_ABOVE:
 462                 t.setCursorFromCoordinates(cur, 0, first);
 463                 cur.clearSelection();
 464                 break;
 465         case bv_funcs::CUR_BELOW:
 466                 t.setCursorFromCoordinates(cur, 0, last);
 467                 cur.clearSelection();
 468                 break;
 469         case bv_funcs::CUR_INSIDE:
 470                 int const y = bv_funcs::getPos(cur).y_;
 471                 int const newy = min(last, max(y, first));
 472                 if (y != newy) {
 473                         cur.reset(bv_->buffer()->inset());
 474                         t.setCursorFromCoordinates(cur, 0, newy);
 475                 }
 476         }
 477         owner_->updateLayoutChoice();
 478 }
 479
 480
 481 void BufferView::Pimpl::scroll(int lines)
 482 {
 483 //      if (!buffer_)
 484 //              return;
 485 //
 486 //      LyXText const * t = bv_->text();
 487 //      int const line_height = defaultRowHeight();
 488 //
 489 //      // The new absolute coordinate
 490 //      int new_top_y = top_y() + lines * line_height;
 491 //
 492 //      // Restrict to a valid value
 493 //      new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
 494 //      new_top_y = std::max(0, new_top_y);
 495 //
 496 //      scrollDocView(new_top_y);
 497 //
 498 //      // Update the scrollbar.
 499 //      workarea().setScrollbarParams(t->height(), top_y(), defaultRowHeight());
 500 }
 501
 502
 503 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 504                                          key_modifier::state state)
 505 {
 506         bv_->owner()->getLyXFunc().processKeySym(key, state);
 507
 508         /* This is perhaps a bit of a hack. When we move
 509          * around, or type, it's nice to be able to see
 510          * the cursor immediately after the keypress. So
 511          * we reset the toggle timeout and force the visibility
 512          * of the cursor. Note we cannot do this inside
 513          * dispatch() itself, because that's called recursively.
 514          */
 515         if (available()) {
 516                 cursor_timeout.restart();
 517                 screen().showCursor(*bv_);
 518         }
 519 }
 520
 521
 522 void BufferView::Pimpl::selectionRequested()
 523 {
 524         static string sel;
 525
 526         if (!available())
 527                 return;
 528
 529         LCursor & cur = bv_->cursor();
 530
 531         if (!cur.selection()) {
 532                 xsel_cache_.set = false;
 533                 return;
 534         }
 535
 536         if (!xsel_cache_.set ||
 537             cur.back() != xsel_cache_.cursor ||
 538             cur.anchor_.back() != xsel_cache_.anchor)
 539         {
 540                 xsel_cache_.cursor = cur.back();
 541                 xsel_cache_.anchor = cur.anchor_.back();
 542                 xsel_cache_.set = cur.selection();
 543                 sel = cur.selectionAsString(false);
 544                 if (!sel.empty())
 545                         workarea().putClipboard(sel);
 546         }
 547 }
 548
 549
 550 void BufferView::Pimpl::selectionLost()
 551 {
 552         if (available()) {
 553                 screen().hideCursor();
 554                 bv_->cursor().clearSelection();
 555                 xsel_cache_.set = false;
 556         }
 557 }
 558
 559
 560 void BufferView::Pimpl::workAreaResize()
 561 {
 562         static int work_area_width;
 563         static int work_area_height;
 564
 565         bool const widthChange = workarea().workWidth() != work_area_width;
 566         bool const heightChange = workarea().workHeight() != work_area_height;
 567
 568         // update from work area
 569         work_area_width = workarea().workWidth();
 570         work_area_height = workarea().workHeight();
 571
 572         if (buffer_ && widthChange) {
 573                 // The visible LyXView need a resize
 574                 resizeCurrentBuffer();
 575         }
 576
 577         if (widthChange || heightChange)
 578                 update();
 579
 580         // always make sure that the scrollbar is sane.
 581         updateScrollbar();
 582         owner_->updateLayoutChoice();
 583 }
 584
 585
 586 bool BufferView::Pimpl::fitCursor()
 587 {
 588         if (bv_funcs::status(bv_, bv_->cursor()) == bv_funcs::CUR_INSIDE) {
 589                 int asc, des;
 590                 bv_->cursor().getDim(asc, des);
 591                 Point p = bv_funcs::getPos(bv_->cursor());
 592                 if (p.y_ - asc >= 0 && p.y_ + des < bv_->workHeight())
 593                         return false;
 594         }
 595         bv_->center();
 596         return true;
 597 }
 598
 599
 600 void BufferView::Pimpl::update(bool fitcursor, bool forceupdate)
 601 {
 602         lyxerr << "BufferView::Pimpl::update(fc=" << fitcursor << ", fu="
 603                << forceupdate << ")  buffer: " << buffer_ << endl;
 604
 605         // check needed to survive LyX startup
 606         if (buffer_) {
 607                 // update macro store
 608                 buffer_->buildMacros();
 609                 // first drawing step
 610
 611                 CoordCache backup;
 612                 std::swap(theCoords, backup);
 613                 //
 614                 ViewMetricsInfo vi = metrics();
 615
 616                 if (fitcursor && fitCursor()) {
 617                         forceupdate = true;
 618                         vi = metrics();
 619                 }
 620                 if (forceupdate) {
 621                         // second drawing step
 622                         screen().redraw(*bv_, vi);
 623                 } else
 624                         std::swap(theCoords, backup);
 625         } else
 626                 screen().greyOut();
 627
 628         // and the scrollbar
 629         updateScrollbar();
 630         bv_->owner()->view_state_changed();
 631 }
 632
 633
 634 // Callback for cursor timer
 635 void BufferView::Pimpl::cursorToggle()
 636 {
 637         if (buffer_) {
 638                 screen().toggleCursor(*bv_);
 639
 640                 // Use this opportunity to deal with any child processes that
 641                 // have finished but are waiting to communicate this fact
 642                 // to the rest of LyX.
 643                 ForkedcallsController & fcc = ForkedcallsController::get();
 644                 if (fcc.processesCompleted())
 645                         fcc.handleCompletedProcesses();
 646         }
 647
 648         cursor_timeout.restart();
 649 }
 650
 651
 652 bool BufferView::Pimpl::available() const
 653 {
 654         return buffer_ && bv_->text();
 655 }
 656
 657
 658 Change const BufferView::Pimpl::getCurrentChange()
 659 {
 660         if (!bv_->buffer()->params().tracking_changes)
 661                 return Change(Change::UNCHANGED);
 662
 663         LyXText * text = bv_->getLyXText();
 664         LCursor & cur = bv_->cursor();
 665
 666         if (!cur.selection())
 667                 return Change(Change::UNCHANGED);
 668
 669         return text->getPar(cur.selBegin().pit()).
 670                         lookupChangeFull(cur.selBegin().pos());
 671 }
 672
 673
 674 void BufferView::Pimpl::savePosition(unsigned int i)
 675 {
 676         if (i >= saved_positions_num)
 677                 return;
 678         BOOST_ASSERT(bv_->cursor().inTexted());
 679         saved_positions[i] = Position(buffer_->fileName(),
 680                                       bv_->cursor().paragraph().id(),
 681                                       bv_->cursor().pos());
 682         if (i > 0)
 683                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 684 }
 685
 686
 687 void BufferView::Pimpl::restorePosition(unsigned int i)
 688 {
 689         if (i >= saved_positions_num)
 690                 return;
 691
 692         string const fname = saved_positions[i].filename;
 693
 694         bv_->cursor().clearSelection();
 695
 696         if (fname != buffer_->fileName()) {
 697                 Buffer * b = 0;
 698                 if (bufferlist.exists(fname))
 699                         b = bufferlist.getBuffer(fname);
 700                 else {
 701                         b = bufferlist.newBuffer(fname);
 702                         ::loadLyXFile(b, fname); // don't ask, just load it
 703                 }
 704                 if (b)
 705                         setBuffer(b);
 706         }
 707
 708         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 709         if (par == buffer_->par_iterator_end())
 710                 return;
 711
 712         bv_->text()->setCursor(bv_->cursor(), par.pit(),
 713                 min(par->size(), saved_positions[i].par_pos));
 714
 715         if (i > 0)
 716                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 717 }
 718
 719
 720 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 721 {
 722         return i < saved_positions_num && !saved_positions[i].filename.empty();
 723 }
 724
 725
 726 void BufferView::Pimpl::switchKeyMap()
 727 {
 728         if (!lyxrc.rtl_support)
 729                 return;
 730
 731         Intl & intl = owner_->getIntl();
 732         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 733                 if (intl.keymap == Intl::PRIMARY)
 734                         intl.KeyMapSec();
 735         } else {
 736                 if (intl.keymap == Intl::SECONDARY)
 737                         intl.KeyMapPrim();
 738         }
 739 }
 740
 741
 742 void BufferView::Pimpl::center()
 743 {
 744         CursorSlice const & bot = bv_->cursor().bottom();
 745         lyx::pit_type const pit = bot.pit();
 746         bot.text()->redoParagraph(pit);
 747         Paragraph const & par = bot.text()->paragraphs()[pit];
 748         anchor_ref_ = pit;
 749         offset_ref_ = bv_funcs::coordOffset(bv_->cursor()).y_ + par.ascent()
 750                 - workarea().workHeight() / 2;
 751 }
 752
 753
 754 void BufferView::Pimpl::stuffClipboard(string const & content) const
 755 {
 756         workarea().putClipboard(content);
 757 }
 758
 759
 760 void BufferView::Pimpl::MenuInsertLyXFile(string const & filenm)
 761 {
 762         string filename = filenm;
 763
 764         if (filename.empty()) {
 765                 // Launch a file browser
 766                 string initpath = lyxrc.document_path;
 767
 768                 if (available()) {
 769                         string const trypath = owner_->buffer()->filePath();
 770                         // If directory is writeable, use this as default.
 771                         if (IsDirWriteable(trypath))
 772                                 initpath = trypath;
 773                 }
 774
 775                 FileDialog fileDlg(_("Select LyX document to insert"),
 776                         LFUN_FILE_INSERT,
 777                         make_pair(string(_("Documents|#o#O")),
 778                                   string(lyxrc.document_path)),
 779                         make_pair(string(_("Examples|#E#e")),
 780                                   string(AddPath(system_lyxdir(), "examples"))));
 781
 782                 FileDialog::Result result =
 783                         fileDlg.open(initpath,
 784                                      FileFilterList(_("LyX Documents (*.lyx)")),
 785                                      string());
 786
 787                 if (result.first == FileDialog::Later)
 788                         return;
 789
 790                 filename = result.second;
 791
 792                 // check selected filename
 793                 if (filename.empty()) {
 794                         owner_->message(_("Canceled."));
 795                         return;
 796                 }
 797         }
 798
 799         // get absolute path of file and add ".lyx" to the filename if
 800         // necessary
 801         filename = FileSearch(string(), filename, "lyx");
 802
 803         string const disp_fn = MakeDisplayPath(filename);
 804         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 805
 806         bv_->cursor().clearSelection();
 807         bv_->text()->breakParagraph(bv_->cursor());
 808
 809         BOOST_ASSERT(bv_->cursor().inTexted());
 810
 811         string const fname = MakeAbsPath(filename);
 812         bool const res = bv_->buffer()->readFile(fname, bv_->cursor().pit());
 813         bv_->resize();
 814
 815         string s = res ? _("Document %1$s inserted.")
 816                        : _("Could not insert document %1$s");
 817         owner_->message(bformat(s, disp_fn));
 818 }
 819
 820
 821 void BufferView::Pimpl::trackChanges()
 822 {
 823         Buffer * buf = bv_->buffer();
 824         bool const tracking = buf->params().tracking_changes;
 825
 826         if (!tracking) {
 827                 for_each(buf->par_iterator_begin(),
 828                          buf->par_iterator_end(),
 829                          bind(&Paragraph::trackChanges, _1, Change::UNCHANGED));
 830                 buf->params().tracking_changes = true;
 831
 832                 // we cannot allow undos beyond the freeze point
 833                 buf->undostack().clear();
 834         } else {
 835                 update();
 836                 bv_->text()->setCursor(bv_->cursor(), 0, 0);
 837 #ifdef WITH_WARNINGS
 838 #warning changes FIXME
 839 #endif
 840                 bool found = lyx::find::findNextChange(bv_);
 841                 if (found) {
 842                         owner_->getDialogs().show("changes");
 843                         return;
 844                 }
 845
 846                 for_each(buf->par_iterator_begin(),
 847                          buf->par_iterator_end(),
 848                          mem_fun_ref(&Paragraph::untrackChanges));
 849
 850                 buf->params().tracking_changes = false;
 851         }
 852
 853         buf->redostack().clear();
 854 }
 855
 856
 857 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd0)
 858 {
 859         lyxerr << "BufferView::Pimpl::workAreaDispatch: request: "
 860           << cmd0 << std::endl;
 861         // this is only called for mouse related events including
 862         // LFUN_FILE_OPEN generated by drag-and-drop.
 863         FuncRequest cmd = cmd0;
 864
 865         // handle drag&drop
 866         if (cmd.action == LFUN_FILE_OPEN) {
 867                 owner_->dispatch(cmd);
 868                 return true;
 869         }
 870
 871         if (!bv_->buffer())
 872                 return false;
 873
 874         LCursor cur(*bv_);
 875         cur.push(bv_->buffer()->inset());
 876         cur.selection() = bv_->cursor().selection();
 877
 878         // Doesn't go through lyxfunc, so we need to update
 879         // the layout choice etc. ourselves
 880
 881         // e.g. Qt mouse press when no buffer
 882         if (!available())
 883                 return false;
 884
 885         screen().hideCursor();
 886
 887         // Either the inset under the cursor or the
 888         // surrounding LyXText will handle this event.
 889
 890         // Build temporary cursor.
 891         cmd.y = min(max(cmd.y,-1), bv_->workHeight());
 892         InsetBase * inset = bv_->text()->editXY(cur, cmd.x, cmd.y);
 893         lyxerr << " * hit inset at tip: " << inset << endl;
 894         lyxerr << " * created temp cursor:" << cur << endl;
 895
 896         // Put anchor at the same position.
 897         cur.resetAnchor();
 898
 899         // Try to dispatch to an non-editable inset near this position
 900         // via the temp cursor. If the inset wishes to change the real
 901         // cursor it has to do so explicitly by using
 902         //  cur.bv().cursor() = cur;  (or similar)
 903         if (inset)
 904                 inset->dispatch(cur, cmd);
 905
 906         // Now dispatch to the temporary cursor. If the real cursor should
 907         // be modified, the inset's dispatch has to do so explicitly.
 908         if (!cur.result().dispatched())
 909                 cur.dispatch(cmd);
 910
 911         if (cur.result().dispatched()) {
 912                 // Redraw if requested or necessary.
 913                 update(cur.result().update(), cur.result().update());
 914         }
 915
 916         // see workAreaKeyPress
 917         cursor_timeout.restart();
 918         screen().showCursor(*bv_);
 919
 920         // skip these when selecting
 921         if (cmd.action != LFUN_MOUSE_MOTION) {
 922                 owner_->updateLayoutChoice();
 923                 owner_->updateToolbars();
 924         }
 925
 926         // slight hack: this is only called currently when we
 927         // clicked somewhere, so we force through the display
 928         // of the new status here.
 929         owner_->clearMessage();
 930         return true;
 931 }
 932
 933
 934 FuncStatus BufferView::Pimpl::getStatus(FuncRequest const & cmd)
 935 {
 936         Buffer * buf = bv_->buffer();
 937
 938         FuncStatus flag;
 939
 940         switch (cmd.action) {
 941
 942         case LFUN_UNDO:
 943                 flag.enabled(!buf->undostack().empty());
 944                 break;
 945         case LFUN_REDO:
 946                 flag.enabled(!buf->redostack().empty());
 947                 break;
 948         case LFUN_FILE_INSERT:
 949         case LFUN_FILE_INSERT_ASCII_PARA:
 950         case LFUN_FILE_INSERT_ASCII:
 951         case LFUN_FONT_STATE:
 952         case LFUN_INSERT_LABEL:
 953         case LFUN_BOOKMARK_SAVE:
 954         case LFUN_REF_GOTO:
 955         case LFUN_WORD_FIND:
 956         case LFUN_WORD_REPLACE:
 957         case LFUN_MARK_OFF:
 958         case LFUN_MARK_ON:
 959         case LFUN_SETMARK:
 960         case LFUN_CENTER:
 961                 flag.enabled(true);
 962                 break;
 963
 964         case LFUN_BOOKMARK_GOTO:
 965                 flag.enabled(bv_->isSavedPosition(strToUnsignedInt(cmd.argument)));
 966                 break;
 967         case LFUN_TRACK_CHANGES:
 968                 flag.enabled(true);
 969                 flag.setOnOff(buf->params().tracking_changes);
 970                 break;
 971
 972         case LFUN_MERGE_CHANGES:
 973         case LFUN_ACCEPT_CHANGE: // what about these two
 974         case LFUN_REJECT_CHANGE: // what about these two
 975         case LFUN_ACCEPT_ALL_CHANGES:
 976         case LFUN_REJECT_ALL_CHANGES:
 977                 flag.enabled(buf && buf->params().tracking_changes);
 978                 break;
 979         default:
 980                 flag.enabled(false);
 981         }
 982
 983         return flag;
 984 }
 985
 986
 987
 988 bool BufferView::Pimpl::dispatch(FuncRequest const & cmd)
 989 {
 990         //lyxerr << "BufferView::Pimpl::dispatch  cmd: " << cmd << std::endl;
 991         // Make sure that the cached BufferView is correct.
 992         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
 993                 << " action[" << cmd.action << ']'
 994                 << " arg[" << cmd.argument << ']'
 995                 << " x[" << cmd.x << ']'
 996                 << " y[" << cmd.y << ']'
 997                 << " button[" << cmd.button() << ']'
 998                 << endl;
 999
1000         LCursor & cur = bv_->cursor();
1001
1002         switch (cmd.action) {
1003
1004         case LFUN_UNDO:
1005                 if (available()) {
1006                         cur.message(_("Undo"));
1007                         cur.clearSelection();
1008                         if (!textUndo(*bv_))
1009                                 cur.message(_("No further undo information"));
1010                         update();
1011                         switchKeyMap();
1012                 }
1013                 break;
1014
1015         case LFUN_REDO:
1016                 if (available()) {
1017                         cur.message(_("Redo"));
1018                         cur.clearSelection();
1019                         if (!textRedo(*bv_))
1020                                 cur.message(_("No further redo information"));
1021                         update();
1022                         switchKeyMap();
1023                 }
1024                 break;
1025
1026         case LFUN_FILE_INSERT:
1027                 MenuInsertLyXFile(cmd.argument);
1028                 break;
1029
1030         case LFUN_FILE_INSERT_ASCII_PARA:
1031                 InsertAsciiFile(bv_, cmd.argument, true);
1032                 break;
1033
1034         case LFUN_FILE_INSERT_ASCII:
1035                 InsertAsciiFile(bv_, cmd.argument, false);
1036                 break;
1037
1038         case LFUN_FONT_STATE:
1039                 cur.message(cur.currentState());
1040                 break;
1041
1042         case LFUN_BOOKMARK_SAVE:
1043                 savePosition(strToUnsignedInt(cmd.argument));
1044                 break;
1045
1046         case LFUN_BOOKMARK_GOTO:
1047                 restorePosition(strToUnsignedInt(cmd.argument));
1048                 break;
1049
1050         case LFUN_REF_GOTO: {
1051                 string label = cmd.argument;
1052                 if (label.empty()) {
1053                         InsetRef * inset =
1054                                 getInsetByCode<InsetRef>(bv_->cursor(),
1055                                                          InsetBase::REF_CODE);
1056                         if (inset) {
1057                                 label = inset->getContents();
1058                                 savePosition(0);
1059                         }
1060                 }
1061
1062                 if (!label.empty())
1063                         bv_->gotoLabel(label);
1064                 break;
1065         }
1066
1067         case LFUN_TRACK_CHANGES:
1068                 trackChanges();
1069                 break;
1070
1071         case LFUN_MERGE_CHANGES:
1072                 owner_->getDialogs().show("changes");
1073                 break;
1074
1075         case LFUN_ACCEPT_ALL_CHANGES: {
1076                 bv_->cursor().reset(bv_->buffer()->inset());
1077 #ifdef WITH_WARNINGS
1078 #warning FIXME changes
1079 #endif
1080                 while (lyx::find::findNextChange(bv_))
1081                         bv_->getLyXText()->acceptChange(bv_->cursor());
1082                 update();
1083                 break;
1084         }
1085
1086         case LFUN_REJECT_ALL_CHANGES: {
1087                 bv_->cursor().reset(bv_->buffer()->inset());
1088 #ifdef WITH_WARNINGS
1089 #warning FIXME changes
1090 #endif
1091                 while (lyx::find::findNextChange(bv_))
1092                         bv_->getLyXText()->rejectChange(bv_->cursor());
1093                 break;
1094         }
1095
1096         case LFUN_WORD_FIND:
1097                 lyx::find::find(bv_, cmd);
1098                 break;
1099
1100         case LFUN_WORD_REPLACE:
1101                 lyx::find::replace(bv_, cmd);
1102                 break;
1103
1104         case LFUN_MARK_OFF:
1105                 cur.clearSelection();
1106                 cur.resetAnchor();
1107                 cur.message(N_("Mark off"));
1108                 break;
1109
1110         case LFUN_MARK_ON:
1111                 cur.clearSelection();
1112                 cur.mark() = true;
1113                 cur.resetAnchor();
1114                 cur.message(N_("Mark on"));
1115                 break;
1116
1117         case LFUN_SETMARK:
1118                 cur.clearSelection();
1119                 if (cur.mark()) {
1120                         cur.mark() = false;
1121                         cur.message(N_("Mark removed"));
1122                 } else {
1123                         cur.mark() = true;
1124                         cur.message(N_("Mark set"));
1125                 }
1126                 cur.resetAnchor();
1127                 break;
1128
1129         case LFUN_CENTER:
1130                 bv_->center();
1131                 break;
1132
1133         default:
1134                 return false;
1135         }
1136
1137         return true;
1138 }
1139
1140
1141 ViewMetricsInfo BufferView::Pimpl::metrics()
1142 {
1143         // remove old position cache
1144         theCoords.clear();
1145         BufferView & bv = *bv_;
1146         LyXText * const text = bv.text();
1147         if (anchor_ref_ > int(text->paragraphs().size() - 1)) {
1148                 anchor_ref_ = int(text->paragraphs().size() - 1);
1149                 offset_ref_ = 0;
1150         }
1151
1152         lyx::pit_type const pit = anchor_ref_;
1153         int pit1 = pit;
1154         int pit2 = pit;
1155         size_t npit = text->paragraphs().size();
1156         lyxerr << "npit: " << npit << " pit1: " << pit1
1157                 << " pit2: " << pit2 << endl;
1158
1159         // rebreak anchor par
1160         text->redoParagraph(pit);
1161         int y0 = text->getPar(pit1).ascent() - offset_ref_;
1162
1163         // redo paragraphs above cursor if necessary
1164         int y1 = y0;
1165         while (y1 > 0 && pit1 > 0) {
1166                 y1 -= text->getPar(pit1).ascent();
1167                 --pit1;
1168                 text->redoParagraph(pit1);
1169                 y1 -= text->getPar(pit1).descent();
1170         }
1171
1172
1173         // take care of ascent of first line
1174         y1 -= text->getPar(pit1).ascent();
1175
1176         //normalize anchor for next time
1177         anchor_ref_ = pit1;
1178         offset_ref_ = -y1;
1179
1180         // grey at the beginning is ugly
1181         if (pit1 == 0 && y1 > 0) {
1182                 y0 -= y1;
1183                 y1 = 0;
1184                 anchor_ref_ = 0;
1185         }
1186
1187         // redo paragraphs below cursor if necessary
1188         int y2 = y0;
1189         while (y2 < bv.workHeight() && pit2 < int(npit) - 1) {
1190                 y2 += text->getPar(pit2).descent();
1191                 ++pit2;
1192                 text->redoParagraph(pit2);
1193                 y2 += text->getPar(pit2).ascent();
1194         }
1195
1196         // take care of descent of last line
1197         y2 += text->getPar(pit2).descent();
1198
1199         // the coordinates of all these paragraphs are correct, cache them
1200         int y = y1;
1201         for (lyx::pit_type pit = pit1; pit <= pit2; ++pit) {
1202                 y += text->getPar(pit).ascent();
1203                 theCoords.pars_[text][pit] = Point(0, y);
1204                 y += text->getPar(pit).descent();
1205         }
1206
1207         lyxerr << "bv:metrics:  y1: " << y1 << " y2: " << y2 << endl;
1208         return ViewMetricsInfo(pit1, pit2, y1, y2);
1209 }