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 "cursor.h"
  27 #include "debug.h"
  28 #include "dispatchresult.h"
  29 #include "factory.h"
  30 #include "FloatList.h"
  31 #include "funcrequest.h"
  32 #include "FuncStatus.h"
  33 #include "gettext.h"
  34 #include "intl.h"
  35 #include "insetiterator.h"
  36 #include "lyx_cb.h" // added for Dispatch functions
  37 #include "lyx_main.h"
  38 #include "lyxfind.h"
  39 #include "lyxfunc.h"
  40 #include "lyxtext.h"
  41 #include "lyxrc.h"
  42 #include "lastfiles.h"
  43 #include "paragraph.h"
  44 #include "paragraph_funcs.h"
  45 #include "ParagraphParameters.h"
  46 #include "pariterator.h"
  47 #include "rowpainter.h"
  48 #include "undo.h"
  49 #include "vspace.h"
  50
  51 #include "insets/insetref.h"
  52 #include "insets/insettext.h"
  53
  54 #include "frontends/Alert.h"
  55 #include "frontends/Dialogs.h"
  56 #include "frontends/FileDialog.h"
  57 #include "frontends/LyXView.h"
  58 #include "frontends/LyXScreenFactory.h"
  59 #include "frontends/screen.h"
  60 #include "frontends/WorkArea.h"
  61 #include "frontends/WorkAreaFactory.h"
  62
  63 #include "graphics/Previews.h"
  64
  65 #include "support/filetools.h"
  66 #include "support/forkedcontr.h"
  67 #include "support/globbing.h"
  68 #include "support/path_defines.h"
  69 #include "support/tostr.h"
  70 #include "support/types.h"
  71
  72 #include <boost/bind.hpp>
  73
  74 using lyx::pos_type;
  75
  76 using lyx::support::AddPath;
  77 using lyx::support::bformat;
  78 using lyx::support::FileFilterList;
  79 using lyx::support::FileSearch;
  80 using lyx::support::ForkedcallsController;
  81 using lyx::support::IsDirWriteable;
  82 using lyx::support::MakeDisplayPath;
  83 using lyx::support::strToUnsignedInt;
  84 using lyx::support::system_lyxdir;
  85
  86 using std::endl;
  87 using std::istringstream;
  88 using std::make_pair;
  89 using std::min;
  90 using std::string;
  91
  92
  93 extern BufferList bufferlist;
  94
  95
  96 namespace {
  97
  98 unsigned int const saved_positions_num = 20;
  99
 100 // All the below connection objects are needed because of a bug in some
 101 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
 102 // to these connections we avoid a segfault upon startup, and also at exit.
 103 // (Lgb)
 104
 105 boost::signals::connection dispatchcon;
 106 boost::signals::connection timecon;
 107 boost::signals::connection doccon;
 108 boost::signals::connection resizecon;
 109 boost::signals::connection kpresscon;
 110 boost::signals::connection selectioncon;
 111 boost::signals::connection lostcon;
 112
 113
 114 } // anon namespace
 115
 116
 117 BufferView::Pimpl::Pimpl(BufferView & bv, LyXView * owner,
 118              int xpos, int ypos, int width, int height)
 119         : bv_(&bv), owner_(owner), buffer_(0), cursor_timeout(400),
 120           using_xterm_cursor(false), cursor_(bv)
 121 {
 122         xsel_cache_.set = false;
 123
 124         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 125         screen_.reset(LyXScreenFactory::create(workarea()));
 126
 127         // Setup the signals
 128         doccon = workarea().scrollDocView
 129                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 130         resizecon = workarea().workAreaResize
 131                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 132         dispatchcon = workarea().dispatch
 133                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 134         kpresscon = workarea().workAreaKeyPress
 135                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 136         selectioncon = workarea().selectionRequested
 137                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 138         lostcon = workarea().selectionLost
 139                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 140
 141         timecon = cursor_timeout.timeout
 142                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 143         cursor_timeout.start();
 144         saved_positions.resize(saved_positions_num);
 145 }
 146
 147
 148 void BufferView::Pimpl::addError(ErrorItem const & ei)
 149 {
 150         errorlist_.push_back(ei);
 151 }
 152
 153
 154 void BufferView::Pimpl::showReadonly(bool)
 155 {
 156         owner_->updateWindowTitle();
 157         owner_->getDialogs().updateBufferDependent(false);
 158 }
 159
 160
 161 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 162 {
 163         if (errorConnection_.connected())
 164                 disconnectBuffer();
 165
 166         errorConnection_ =
 167                 buf.error.connect(
 168                         boost::bind(&BufferView::Pimpl::addError, this, _1));
 169
 170         messageConnection_ =
 171                 buf.message.connect(
 172                         boost::bind(&LyXView::message, owner_, _1));
 173
 174         busyConnection_ =
 175                 buf.busy.connect(
 176                         boost::bind(&LyXView::busy, owner_, _1));
 177
 178         titleConnection_ =
 179                 buf.updateTitles.connect(
 180                         boost::bind(&LyXView::updateWindowTitle, owner_));
 181
 182         timerConnection_ =
 183                 buf.resetAutosaveTimers.connect(
 184                         boost::bind(&LyXView::resetAutosaveTimer, owner_));
 185
 186         readonlyConnection_ =
 187                 buf.readonly.connect(
 188                         boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 189
 190         closingConnection_ =
 191                 buf.closing.connect(
 192                         boost::bind(&BufferView::Pimpl::setBuffer, this, (Buffer *)0));
 193 }
 194
 195
 196 void BufferView::Pimpl::disconnectBuffer()
 197 {
 198         errorConnection_.disconnect();
 199         messageConnection_.disconnect();
 200         busyConnection_.disconnect();
 201         titleConnection_.disconnect();
 202         timerConnection_.disconnect();
 203         readonlyConnection_.disconnect();
 204         closingConnection_.disconnect();
 205 }
 206
 207
 208 void BufferView::Pimpl::newFile(string const & filename, string const & tname,
 209         bool isNamed)
 210 {
 211         setBuffer(::newFile(filename, tname, isNamed));
 212 }
 213
 214
 215 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 216 {
 217         // get absolute path of file and add ".lyx" to the filename if
 218         // necessary
 219         string s = FileSearch(string(), filename, "lyx");
 220
 221         bool const found = !s.empty();
 222
 223         if (!found)
 224                 s = filename;
 225
 226         // file already open?
 227         if (bufferlist.exists(s)) {
 228                 string const file = MakeDisplayPath(s, 20);
 229                 string text = bformat(_("The document %1$s is already "
 230                                         "loaded.\n\nDo you want to revert "
 231                                         "to the saved version?"), file);
 232                 int const ret = Alert::prompt(_("Revert to saved document?"),
 233                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 234
 235                 if (ret != 0) {
 236                         setBuffer(bufferlist.getBuffer(s));
 237                         return true;
 238                 }
 239                 // FIXME: should be LFUN_REVERT
 240                 if (!bufferlist.close(bufferlist.getBuffer(s), false))
 241                         return false;
 242                 // Fall through to new load. (Asger)
 243         }
 244
 245         Buffer * b;
 246
 247         if (found) {
 248                 b = bufferlist.newBuffer(s);
 249                 connectBuffer(*b);
 250                 if (!::loadLyXFile(b, s)) {
 251                         bufferlist.release(b);
 252                         return false;
 253                 }
 254         } else {
 255                 string text = bformat(_("The document %1$s does not yet "
 256                                         "exist.\n\nDo you want to create "
 257                                         "a new document?"), s);
 258                 int const ret = Alert::prompt(_("Create new document?"),
 259                          text, 0, 1, _("&Create"), _("Cancel"));
 260
 261                 if (ret == 0)
 262                         b = ::newFile(s, string(), true);
 263                 else
 264                         return false;
 265         }
 266
 267         setBuffer(b);
 268         bv_->showErrorList(_("Parse"));
 269
 270         if (tolastfiles)
 271                 LyX::ref().lastfiles().newFile(b->fileName());
 272
 273         return true;
 274 }
 275
 276
 277 WorkArea & BufferView::Pimpl::workarea() const
 278 {
 279         return *workarea_.get();
 280 }
 281
 282
 283 LyXScreen & BufferView::Pimpl::screen() const
 284 {
 285         return *screen_.get();
 286 }
 287
 288
 289 Painter & BufferView::Pimpl::painter() const
 290 {
 291         return workarea().getPainter();
 292 }
 293
 294
 295 void BufferView::Pimpl::top_y(int y)
 296 {
 297         top_y_ = y;
 298 }
 299
 300
 301 int BufferView::Pimpl::top_y() const
 302 {
 303         return top_y_;
 304 }
 305
 306
 307 void BufferView::Pimpl::setBuffer(Buffer * b)
 308 {
 309         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 310                             << b << ')' << endl;
 311         if (buffer_)
 312                 disconnectBuffer();
 313
 314         // set current buffer
 315         buffer_ = b;
 316
 317         // reset old cursor
 318         top_y_ = 0;
 319         cursor_ = LCursor(*bv_);
 320
 321         // if we're quitting lyx, don't bother updating stuff
 322         if (quitting)
 323                 return;
 324
 325         if (buffer_) {
 326                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 327                 connectBuffer(*buffer_);
 328
 329                 cursor_.push(buffer_->inset());
 330                 cursor_.resetAnchor();
 331                 buffer_->text().init(bv_);
 332
 333                 // If we don't have a text object for this, we make one
 334                 //if (bv_->text() == 0)
 335                 //      resizeCurrentBuffer();
 336
 337                 // Buffer-dependent dialogs should be updated or
 338                 // hidden. This should go here because some dialogs (eg ToC)
 339                 // require bv_->text.
 340                 owner_->getDialogs().updateBufferDependent(true);
 341                 owner_->setLayout(bv_->text()->getPar(0).layout()->name());
 342         } else {
 343                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 344                 // we are closing the buffer, use the first buffer as current
 345                 buffer_ = bufferlist.first();
 346                 owner_->getDialogs().hideBufferDependent();
 347         }
 348
 349         update();
 350         updateScrollbar();
 351         owner_->updateMenubar();
 352         owner_->updateToolbar();
 353         owner_->updateLayoutChoice();
 354         owner_->updateWindowTitle();
 355
 356         if (lyx::graphics::Previews::activated() && buffer_)
 357                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 358 }
 359
 360
 361 bool BufferView::Pimpl::fitCursor()
 362 {
 363         // to get the correct y cursor info
 364         lyxerr << "BufferView::fitCursor" << std::endl;
 365         lyx::par_type const pit = bv_->cursor().bottom().par();
 366         bv_->text()->redoParagraph(pit);
 367         refreshPar(*bv_, *bv_->text(), pit);
 368
 369         if (!screen().fitCursor(bv_))
 370                 return false;
 371         updateScrollbar();
 372         return true;
 373 }
 374
 375
 376 void BufferView::Pimpl::redoCurrentBuffer()
 377 {
 378         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 379         if (buffer_ && bv_->text()) {
 380                 resizeCurrentBuffer();
 381                 updateScrollbar();
 382                 owner_->updateLayoutChoice();
 383         }
 384 }
 385
 386
 387 void BufferView::Pimpl::resizeCurrentBuffer()
 388 {
 389         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 390         owner_->busy(true);
 391         owner_->message(_("Formatting document..."));
 392
 393         LyXText * text = bv_->text();
 394         if (!text)
 395                 return;
 396
 397         text->init(bv_);
 398         update();
 399         fitCursor();
 400
 401         switchKeyMap();
 402         owner_->busy(false);
 403
 404         // reset the "Formatting..." message
 405         owner_->clearMessage();
 406
 407         updateScrollbar();
 408 }
 409
 410
 411 void BufferView::Pimpl::updateScrollbar()
 412 {
 413         if (!bv_->text()) {
 414                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 415                 lyxerr << "no text in updateScrollbar" << endl;
 416                 workarea().setScrollbarParams(0, 0, 0);
 417                 return;
 418         }
 419
 420         LyXText const & t = *bv_->text();
 421
 422         lyxerr[Debug::GUI]
 423                 << "Updating scrollbar: height: " << t.height()
 424                 << " top_y: " << top_y()
 425                 << " default height " << defaultRowHeight() << endl;
 426
 427         workarea().setScrollbarParams(t.height(), top_y(), defaultRowHeight());
 428 }
 429
 430
 431 void BufferView::Pimpl::scrollDocView(int value)
 432 {
 433         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 434
 435         if (!buffer_)
 436                 return;
 437
 438         screen().hideCursor();
 439
 440         top_y(value);
 441         screen().redraw(*bv_);
 442
 443         if (!lyxrc.cursor_follows_scrollbar)
 444                 return;
 445
 446         int const height = defaultRowHeight();
 447         int const first = top_y() + height;
 448         int const last = top_y() + workarea().workHeight() - height;
 449
 450         bv_->cursor().reset(bv_->buffer()->inset());
 451         LyXText * text = bv_->text();
 452         int y = text->cursorY(bv_->cursor().front());
 453         if (y < first)
 454                 y = first;
 455         if (y > last)
 456                 y = last;
 457         text->setCursorFromCoordinates(bv_->cursor(), 0, y);
 458
 459         owner_->updateLayoutChoice();
 460 }
 461
 462
 463 void BufferView::Pimpl::scroll(int lines)
 464 {
 465         if (!buffer_)
 466                 return;
 467
 468         LyXText const * t = bv_->text();
 469         int const line_height = defaultRowHeight();
 470
 471         // The new absolute coordinate
 472         int new_top_y = top_y() + lines * line_height;
 473
 474         // Restrict to a valid value
 475         new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
 476         new_top_y = std::max(0, new_top_y);
 477
 478         scrollDocView(new_top_y);
 479
 480         // Update the scrollbar.
 481         workarea().setScrollbarParams(t->height(), top_y(), defaultRowHeight());
 482 }
 483
 484
 485 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 486                                          key_modifier::state state)
 487 {
 488         bv_->owner()->getLyXFunc().processKeySym(key, state);
 489
 490         /* This is perhaps a bit of a hack. When we move
 491          * around, or type, it's nice to be able to see
 492          * the cursor immediately after the keypress. So
 493          * we reset the toggle timeout and force the visibility
 494          * of the cursor. Note we cannot do this inside
 495          * dispatch() itself, because that's called recursively.
 496          */
 497         if (available()) {
 498                 cursor_timeout.restart();
 499                 screen().showCursor(*bv_);
 500         }
 501 }
 502
 503
 504 void BufferView::Pimpl::selectionRequested()
 505 {
 506         static string sel;
 507
 508         if (!available())
 509                 return;
 510
 511         LCursor & cur = bv_->cursor();
 512
 513         if (!cur.selection()) {
 514                 xsel_cache_.set = false;
 515                 return;
 516         }
 517
 518         if (!xsel_cache_.set ||
 519             cur.back() != xsel_cache_.cursor ||
 520             cur.anchor_.back() != xsel_cache_.anchor)
 521         {
 522                 xsel_cache_.cursor = cur.back();
 523                 xsel_cache_.anchor = cur.anchor_.back();
 524                 xsel_cache_.set = cur.selection();
 525                 sel = cur.selectionAsString(false);
 526                 if (!sel.empty())
 527                         workarea().putClipboard(sel);
 528         }
 529 }
 530
 531
 532 void BufferView::Pimpl::selectionLost()
 533 {
 534         if (available()) {
 535                 screen().hideCursor();
 536                 bv_->cursor().clearSelection();
 537                 xsel_cache_.set = false;
 538         }
 539 }
 540
 541
 542 void BufferView::Pimpl::workAreaResize()
 543 {
 544         static int work_area_width;
 545         static int work_area_height;
 546
 547         bool const widthChange = workarea().workWidth() != work_area_width;
 548         bool const heightChange = workarea().workHeight() != work_area_height;
 549
 550         // update from work area
 551         work_area_width = workarea().workWidth();
 552         work_area_height = workarea().workHeight();
 553
 554         if (buffer_ && widthChange) {
 555                 // The visible LyXView need a resize
 556                 resizeCurrentBuffer();
 557         }
 558
 559         if (widthChange || heightChange)
 560                 update();
 561
 562         // always make sure that the scrollbar is sane.
 563         updateScrollbar();
 564         owner_->updateLayoutChoice();
 565 }
 566
 567
 568 void BufferView::Pimpl::update()
 569 {
 570         //lyxerr << "BufferView::Pimpl::update(), buffer: " << buffer_ << endl;
 571         // fix cursor coordinate cache in case something went wrong
 572
 573         // check needed to survive LyX startup
 574         if (buffer_) {
 575                 // update all 'visible' paragraphs
 576                 lyx::par_type beg, end;
 577                 getParsInRange(buffer_->paragraphs(),
 578                                top_y(), top_y() + workarea().workHeight(),
 579                                beg, end);
 580                 bv_->text()->redoParagraphs(beg, end);
 581                 updateScrollbar();
 582         }
 583         screen().redraw(*bv_);
 584         bv_->owner()->view_state_changed();
 585 }
 586
 587
 588 // Callback for cursor timer
 589 void BufferView::Pimpl::cursorToggle()
 590 {
 591         if (buffer_) {
 592                 screen().toggleCursor(*bv_);
 593
 594                 // Use this opportunity to deal with any child processes that
 595                 // have finished but are waiting to communicate this fact
 596                 // to the rest of LyX.
 597                 ForkedcallsController & fcc = ForkedcallsController::get();
 598                 if (fcc.processesCompleted())
 599                         fcc.handleCompletedProcesses();
 600         }
 601
 602         cursor_timeout.restart();
 603 }
 604
 605
 606 bool BufferView::Pimpl::available() const
 607 {
 608         return buffer_ && bv_->text();
 609 }
 610
 611
 612 Change const BufferView::Pimpl::getCurrentChange()
 613 {
 614         if (!bv_->buffer()->params().tracking_changes)
 615                 return Change(Change::UNCHANGED);
 616
 617         LyXText * text = bv_->getLyXText();
 618         LCursor & cur = bv_->cursor();
 619
 620         if (!cur.selection())
 621                 return Change(Change::UNCHANGED);
 622
 623         return text->getPar(cur.selBegin().par()).
 624                         lookupChangeFull(cur.selBegin().pos());
 625 }
 626
 627
 628 void BufferView::Pimpl::savePosition(unsigned int i)
 629 {
 630         if (i >= saved_positions_num)
 631                 return;
 632         BOOST_ASSERT(bv_->cursor().inTexted());
 633         saved_positions[i] = Position(buffer_->fileName(),
 634                                       bv_->cursor().paragraph().id(),
 635                                       bv_->cursor().pos());
 636         if (i > 0)
 637                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 638 }
 639
 640
 641 void BufferView::Pimpl::restorePosition(unsigned int i)
 642 {
 643         if (i >= saved_positions_num)
 644                 return;
 645
 646         string const fname = saved_positions[i].filename;
 647
 648         bv_->cursor().clearSelection();
 649
 650         if (fname != buffer_->fileName()) {
 651                 Buffer * b = 0;
 652                 if (bufferlist.exists(fname))
 653                         b = bufferlist.getBuffer(fname);
 654                 else {
 655                         b = bufferlist.newBuffer(fname);
 656                         ::loadLyXFile(b, fname); // don't ask, just load it
 657                 }
 658                 if (b)
 659                         setBuffer(b);
 660         }
 661
 662         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 663         if (par == buffer_->par_iterator_end())
 664                 return;
 665
 666         bv_->text()->setCursor(bv_->cursor(), par.pit(),
 667                 min(par->size(), saved_positions[i].par_pos));
 668
 669         if (i > 0)
 670                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 671 }
 672
 673
 674 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 675 {
 676         return i < saved_positions_num && !saved_positions[i].filename.empty();
 677 }
 678
 679
 680 void BufferView::Pimpl::switchKeyMap()
 681 {
 682         if (!lyxrc.rtl_support)
 683                 return;
 684
 685         Intl & intl = owner_->getIntl();
 686         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 687                 if (intl.keymap == Intl::PRIMARY)
 688                         intl.KeyMapSec();
 689         } else {
 690                 if (intl.keymap == Intl::SECONDARY)
 691                         intl.KeyMapPrim();
 692         }
 693 }
 694
 695
 696 void BufferView::Pimpl::center()
 697 {
 698         LyXText * text = bv_->text();
 699
 700         bv_->cursor().clearSelection();
 701         int const half_height = workarea().workHeight() / 2;
 702         int new_y = text->cursorY(bv_->cursor().front()) - half_height;
 703         if (new_y < 0)
 704                 new_y = 0;
 705
 706         // FIXME: look at this comment again ...
 707         // This updates top_y() but means the fitCursor() call
 708         // from the update(FITCUR) doesn't realise that we might
 709         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 710         // the scrollbar to be updated as it should, so we have
 711         // to do it manually. Any operation that does a center()
 712         // and also might have moved top_y() must make sure to call
 713         // updateScrollbar() currently. Never mind that this is a
 714         // pretty obfuscated way of updating text->top_y()
 715         top_y(new_y);
 716 }
 717
 718
 719 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 720 {
 721         workarea().putClipboard(stuff);
 722 }
 723
 724
 725 InsetBase * BufferView::Pimpl::getInsetByCode(InsetBase::Code /*code*/)
 726 {
 727 #ifdef WITH_WARNINGS
 728 #warning Does not work for mathed
 729 #endif
 730         // Ok, this is a little bit too brute force but it
 731         // should work for now. Better infrastructure is coming. (Lgb)
 732
 733 #warning FIXME
 734 #if 0
 735         Buffer * buf = bv_->buffer();
 736         InsetIterator beg = inset_iterator_begin(buf->inset());
 737
 738         bool cursor_par_seen = false;
 739
 740         LCursor & cur = bv_->cursor();
 741         LyXText * = bv_->getLyXText();
 742         ParagraphList::iterator pit = text->getPar(cur.par());
 743
 744         for (; beg; ++beg) {
 745                 if (beg.par() == pit)
 746                         cursor_par_seen = true;
 747                 if (cursor_par_seen) {
 748                         if (beg.par() == pit && beg.pos() >= cur.pos())
 749                                 break;
 750                         if (beg.getPar() != pit)
 751                                 break;
 752                 }
 753         }
 754         if (beg) {
 755                 // Now find the first inset that matches code.
 756                 for (; beg; ++beg) {
 757                         if (beg->lyxCode() == code)
 758                                 return &(*beg);
 759                 }
 760         }
 761 #endif
 762         return 0;
 763 }
 764
 765
 766 void BufferView::Pimpl::MenuInsertLyXFile(string const & filenm)
 767 {
 768         string filename = filenm;
 769
 770         if (filename.empty()) {
 771                 // Launch a file browser
 772                 string initpath = lyxrc.document_path;
 773
 774                 if (available()) {
 775                         string const trypath = owner_->buffer()->filePath();
 776                         // If directory is writeable, use this as default.
 777                         if (IsDirWriteable(trypath))
 778                                 initpath = trypath;
 779                 }
 780
 781                 FileDialog fileDlg(_("Select LyX document to insert"),
 782                         LFUN_FILE_INSERT,
 783                         make_pair(string(_("Documents|#o#O")),
 784                                   string(lyxrc.document_path)),
 785                         make_pair(string(_("Examples|#E#e")),
 786                                   string(AddPath(system_lyxdir(), "examples"))));
 787
 788                 FileDialog::Result result =
 789                         fileDlg.open(initpath,
 790                                      FileFilterList(_("LyX Documents (*.lyx)")),
 791                                      string());
 792
 793                 if (result.first == FileDialog::Later)
 794                         return;
 795
 796                 filename = result.second;
 797
 798                 // check selected filename
 799                 if (filename.empty()) {
 800                         owner_->message(_("Canceled."));
 801                         return;
 802                 }
 803         }
 804
 805         // get absolute path of file and add ".lyx" to the filename if
 806         // necessary
 807         filename = FileSearch(string(), filename, "lyx");
 808
 809         string const disp_fn = MakeDisplayPath(filename);
 810         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 811         if (bv_->insertLyXFile(filename))
 812                 owner_->message(bformat(_("Document %1$s inserted."),
 813                                         disp_fn));
 814         else
 815                 owner_->message(bformat(_("Could not insert document %1$s"),
 816                                         disp_fn));
 817 }
 818
 819
 820 void BufferView::Pimpl::trackChanges()
 821 {
 822         Buffer * buf = bv_->buffer();
 823         bool const tracking = buf->params().tracking_changes;
 824
 825         if (!tracking) {
 826                 ParIterator const end = buf->par_iterator_end();
 827                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 828                         it->trackChanges();
 829                 buf->params().tracking_changes = true;
 830
 831                 // we cannot allow undos beyond the freeze point
 832                 buf->undostack().clear();
 833         } else {
 834                 update();
 835                 bv_->text()->setCursor(bv_->cursor(), 0, 0);
 836 #ifdef WITH_WARNINGS
 837 #warning changes FIXME
 838 #endif
 839                 bool found = lyx::find::findNextChange(bv_);
 840                 if (found) {
 841                         owner_->getDialogs().show("changes");
 842                         return;
 843                 }
 844
 845                 ParIterator const end = buf->par_iterator_end();
 846                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 847                         it->untrackChanges();
 848                 buf->params().tracking_changes = false;
 849         }
 850
 851         buf->redostack().clear();
 852 }
 853
 854
 855 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd0)
 856 {
 857         // this is only called for mouse related events including
 858         // LFUN_FILE_OPEN generated by drag-and-drop.
 859         FuncRequest cmd = cmd0;
 860
 861         // handle drag&deop
 862         if (cmd.action == LFUN_FILE_OPEN) {
 863                 owner_->dispatch(cmd);
 864                 return true;
 865         }
 866
 867         cmd.y += bv_->top_y();
 868         //lyxerr << "*** workAreaDispatch: request: " << cmd << std::endl;
 869         LCursor cur(*bv_);
 870         cur.push(bv_->buffer()->inset());
 871         cur.selection() = bv_->cursor().selection();
 872
 873         // Doesn't go through lyxfunc, so we need to update
 874         // the layout choice etc. ourselves
 875
 876         // e.g. Qt mouse press when no buffer
 877         if (!available())
 878                 return false;
 879
 880         screen().hideCursor();
 881
 882         // Either the inset under the cursor or the
 883         // surrounding LyXText will handle this event.
 884
 885         // Build temporary cursor.
 886         InsetBase * inset = bv_->text()->editXY(cur, cmd.x, cmd.y);
 887         lyxerr << "hit inset at tip: " << inset << endl;
 888         lyxerr << "created temp cursor:\n" << cur << endl;
 889
 890         // Put anchor at the same position.
 891         cur.resetAnchor();
 892
 893         // Try to dispatch to an non-editable inset near this position
 894         // via the temp cursor. If the inset wishes to change the real
 895         // cursor it has to do so explicitly by using
 896         //  cur.bv().cursor() = cur;  (or similar)'
 897         DispatchResult res;
 898         if (inset)
 899                 inset->dispatch(cur, cmd);
 900
 901         // Now dispatch to the temporary cursor. If the real cursor should
 902         // be modified, the inset's dispatch has to do so explicitly.
 903         if (!res.dispatched())
 904                 res = cur.dispatch(cmd);
 905
 906         if (res.dispatched()) {
 907                 // Redraw if requested or necessary.
 908                 if (fitCursor() || res.update())
 909                         update();
 910         }
 911
 912         // see workAreaKeyPress
 913         cursor_timeout.restart();
 914         screen().showCursor(*bv_);
 915
 916         // skip these when selecting
 917         if (cmd.action != LFUN_MOUSE_MOTION) {
 918                 owner_->updateLayoutChoice();
 919                 owner_->updateToolbar();
 920         }
 921
 922         // slight hack: this is only called currently when we
 923         // clicked somewhere, so we force through the display
 924         // of the new status here.
 925         owner_->clearMessage();
 926         return true;
 927 }
 928
 929
 930 FuncStatus BufferView::Pimpl::getStatus(FuncRequest const & cmd)
 931 {
 932         Buffer * buf = bv_->buffer();
 933
 934         FuncStatus flag;
 935
 936         switch (cmd.action) {
 937
 938         case LFUN_UNDO:
 939                 flag.enabled(!buf->undostack().empty());
 940                 break;
 941         case LFUN_REDO:
 942                 flag.enabled(!buf->redostack().empty());
 943                 break;
 944         case LFUN_FILE_INSERT:
 945         case LFUN_FILE_INSERT_ASCII_PARA:
 946         case LFUN_FILE_INSERT_ASCII:
 947         case LFUN_FONT_STATE:
 948         case LFUN_INSERT_LABEL:
 949         case LFUN_BOOKMARK_SAVE:
 950         case LFUN_REF_GOTO:
 951         case LFUN_WORD_FIND:
 952         case LFUN_WORD_REPLACE:
 953         case LFUN_MARK_OFF:
 954         case LFUN_MARK_ON:
 955         case LFUN_SETMARK:
 956         case LFUN_CENTER:
 957         case LFUN_BEGINNINGBUFSEL:
 958         case LFUN_ENDBUFSEL:
 959                 flag.enabled(true);
 960                 break;
 961         case LFUN_BOOKMARK_GOTO:
 962                 flag.enabled(bv_->isSavedPosition(strToUnsignedInt(cmd.argument)));
 963                 break;
 964         case LFUN_TRACK_CHANGES:
 965                 flag.enabled(true);
 966                 flag.setOnOff(buf->params().tracking_changes);
 967                 break;
 968
 969         case LFUN_MERGE_CHANGES:
 970         case LFUN_ACCEPT_CHANGE: // what about these two
 971         case LFUN_REJECT_CHANGE: // what about these two
 972         case LFUN_ACCEPT_ALL_CHANGES:
 973         case LFUN_REJECT_ALL_CHANGES:
 974                 flag.enabled(buf && buf->params().tracking_changes);
 975                 break;
 976         default:
 977                 flag.enabled(false);
 978         }
 979
 980         return flag;
 981 }
 982
 983
 984
 985 bool BufferView::Pimpl::dispatch(FuncRequest const & cmd)
 986 {
 987         //lyxerr << "BufferView::Pimpl::dispatch  cmd: " << cmd << std::endl;
 988         // Make sure that the cached BufferView is correct.
 989         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
 990                 << " action[" << cmd.action << ']'
 991                 << " arg[" << cmd.argument << ']'
 992                 << " x[" << cmd.x << ']'
 993                 << " y[" << cmd.y << ']'
 994                 << " button[" << cmd.button() << ']'
 995                 << endl;
 996
 997         LCursor & cur = bv_->cursor();
 998
 999         switch (cmd.action) {
1000
1001         case LFUN_UNDO:
1002                 if (available()) {
1003                         cur.message(_("Undo"));
1004                         cur.clearSelection();
1005                         if (!textUndo(*bv_))
1006                                 cur.message(_("No further undo information"));
1007                         update();
1008                         switchKeyMap();
1009                 }
1010                 break;
1011
1012         case LFUN_REDO:
1013                 if (available()) {
1014                         cur.message(_("Redo"));
1015                         cur.clearSelection();
1016                         if (!textRedo(*bv_))
1017                                 cur.message(_("No further redo information"));
1018                         update();
1019                         switchKeyMap();
1020                 }
1021                 break;
1022
1023         case LFUN_FILE_INSERT:
1024                 MenuInsertLyXFile(cmd.argument);
1025                 break;
1026
1027         case LFUN_FILE_INSERT_ASCII_PARA:
1028                 InsertAsciiFile(bv_, cmd.argument, true);
1029                 break;
1030
1031         case LFUN_FILE_INSERT_ASCII:
1032                 InsertAsciiFile(bv_, cmd.argument, false);
1033                 break;
1034
1035         case LFUN_FONT_STATE:
1036                 cur.message(cur.currentState());
1037                 break;
1038
1039         case LFUN_INSERT_LABEL: {
1040                 // Try and generate a valid label
1041                 string const contents = cmd.argument.empty() ?
1042                         cur.getPossibleLabel() : cmd.argument;
1043                 InsetCommandParams icp("label", contents);
1044                 string data = InsetCommandMailer::params2string("label", icp);
1045                 owner_->getDialogs().show("label", data, 0);
1046                 break;
1047         }
1048
1049         case LFUN_BOOKMARK_SAVE:
1050                 savePosition(strToUnsignedInt(cmd.argument));
1051                 break;
1052
1053         case LFUN_BOOKMARK_GOTO:
1054                 restorePosition(strToUnsignedInt(cmd.argument));
1055                 break;
1056
1057         case LFUN_REF_GOTO: {
1058                 string label = cmd.argument;
1059                 if (label.empty()) {
1060                         InsetRef * inset =
1061                                 static_cast<InsetRef*>(getInsetByCode(InsetBase::REF_CODE));
1062                         if (inset) {
1063                                 label = inset->getContents();
1064                                 savePosition(0);
1065                         }
1066                 }
1067
1068                 if (!label.empty())
1069                         bv_->gotoLabel(label);
1070                 break;
1071         }
1072
1073         case LFUN_TRACK_CHANGES:
1074                 trackChanges();
1075                 break;
1076
1077         case LFUN_MERGE_CHANGES:
1078                 owner_->getDialogs().show("changes");
1079                 break;
1080
1081         case LFUN_ACCEPT_ALL_CHANGES: {
1082                 bv_->cursor().reset(bv_->buffer()->inset());
1083 #ifdef WITH_WARNINGS
1084 #warning FIXME changes
1085 #endif
1086                 while (lyx::find::findNextChange(bv_))
1087                         bv_->getLyXText()->acceptChange(bv_->cursor());
1088                 update();
1089                 break;
1090         }
1091
1092         case LFUN_REJECT_ALL_CHANGES: {
1093                 bv_->cursor().reset(bv_->buffer()->inset());
1094 #ifdef WITH_WARNINGS
1095 #warning FIXME changes
1096 #endif
1097                 while (lyx::find::findNextChange(bv_))
1098                         bv_->getLyXText()->rejectChange(bv_->cursor());
1099                 break;
1100         }
1101
1102         case LFUN_WORD_FIND:
1103                 lyx::find::find(bv_, cmd);
1104                 break;
1105
1106         case LFUN_WORD_REPLACE:
1107                 lyx::find::replace(bv_, cmd);
1108                 break;
1109
1110         case LFUN_MARK_OFF:
1111                 cur.clearSelection();
1112                 cur.resetAnchor();
1113                 cur.message(N_("Mark off"));
1114                 break;
1115
1116         case LFUN_MARK_ON:
1117                 cur.clearSelection();
1118                 cur.mark() = true;
1119                 cur.resetAnchor();
1120                 cur.message(N_("Mark on"));
1121                 break;
1122
1123         case LFUN_SETMARK:
1124                 cur.clearSelection();
1125                 if (cur.mark()) {
1126                         cur.mark() = false;
1127                         cur.message(N_("Mark removed"));
1128                 } else {
1129                         cur.mark() = true;
1130                         cur.message(N_("Mark set"));
1131                 }
1132                 cur.resetAnchor();
1133                 break;
1134
1135         case LFUN_CENTER:
1136                 bv_->center();
1137                 break;
1138
1139         case LFUN_BEGINNINGBUFSEL:
1140                 bv_->cursor().reset(bv_->buffer()->inset());
1141                 if (!cur.selection())
1142                         cur.resetAnchor();
1143                 bv_->text()->cursorTop(cur);
1144                 finishUndo();
1145                 break;
1146
1147         case LFUN_ENDBUFSEL:
1148                 bv_->cursor().reset(bv_->buffer()->inset());
1149                 if (!cur.selection())
1150                         cur.resetAnchor();
1151                 bv_->text()->cursorBottom(cur);
1152                 finishUndo();
1153                 break;
1154
1155         default:
1156                 return false;
1157         }
1158
1159         return true;
1160 }