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 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(*owner_, 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         } else {
 342                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 343                 // we are closing the buffer, use the first buffer as current
 344                 buffer_ = bufferlist.first();
 345                 owner_->getDialogs().hideBufferDependent();
 346         }
 347
 348         update();
 349         updateScrollbar();
 350         owner_->updateMenubar();
 351         owner_->updateToolbars();
 352         owner_->updateLayoutChoice();
 353         owner_->updateWindowTitle();
 354
 355         // This is done after the layout combox has been populated
 356         if (buffer_)
 357                 owner_->setLayout(cursor_.paragraph().layout()->name());
 358
 359
 360         if (buffer_ && lyx::graphics::Previews::status() != LyXRC::PREVIEW_OFF)
 361                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 362 }
 363
 364
 365 bool BufferView::Pimpl::fitCursor()
 366 {
 367         // to get the correct y cursor info
 368         lyxerr[Debug::DEBUG] << "BufferView::fitCursor" << std::endl;
 369         lyx::par_type const pit = bv_->cursor().bottom().par();
 370         bv_->text()->redoParagraph(pit);
 371         refreshPar(*bv_, *bv_->text(), pit);
 372
 373         if (!screen().fitCursor(bv_))
 374                 return false;
 375         updateScrollbar();
 376         return true;
 377 }
 378
 379
 380 void BufferView::Pimpl::redoCurrentBuffer()
 381 {
 382         lyxerr[Debug::DEBUG] << "BufferView::redoCurrentBuffer" << endl;
 383         if (buffer_ && bv_->text()) {
 384                 resizeCurrentBuffer();
 385                 updateScrollbar();
 386                 owner_->updateLayoutChoice();
 387         }
 388 }
 389
 390
 391 void BufferView::Pimpl::resizeCurrentBuffer()
 392 {
 393         lyxerr[Debug::DEBUG] << "resizeCurrentBuffer" << endl;
 394         owner_->busy(true);
 395         owner_->message(_("Formatting document..."));
 396
 397         LyXText * text = bv_->text();
 398         if (!text)
 399                 return;
 400
 401         text->init(bv_);
 402         update();
 403         fitCursor();
 404
 405         switchKeyMap();
 406         owner_->busy(false);
 407
 408         // reset the "Formatting..." message
 409         owner_->clearMessage();
 410
 411         updateScrollbar();
 412 }
 413
 414
 415 void BufferView::Pimpl::updateScrollbar()
 416 {
 417         if (!bv_->text()) {
 418                 lyxerr[Debug::DEBUG] << "no text in updateScrollbar" << endl;
 419                 workarea().setScrollbarParams(0, 0, 0);
 420                 return;
 421         }
 422
 423         LyXText const & t = *bv_->text();
 424
 425         lyxerr[Debug::GUI]
 426                 << "Updating scrollbar: height: " << t.height()
 427                 << " top_y: " << top_y()
 428                 << " default height " << defaultRowHeight() << endl;
 429
 430         workarea().setScrollbarParams(t.height(), top_y(), defaultRowHeight());
 431 }
 432
 433
 434 void BufferView::Pimpl::scrollDocView(int value)
 435 {
 436         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 437
 438         if (!buffer_)
 439                 return;
 440
 441         screen().hideCursor();
 442
 443         top_y(value);
 444         screen().redraw(*bv_);
 445
 446         if (!lyxrc.cursor_follows_scrollbar)
 447                 return;
 448
 449         int const height = defaultRowHeight();
 450         int const first = top_y() + height;
 451         int const last = top_y() + workarea().workHeight() - height;
 452
 453         bv_->cursor().reset(bv_->buffer()->inset());
 454         LyXText * text = bv_->text();
 455         int y = text->cursorY(bv_->cursor().front());
 456         if (y < first)
 457                 y = first;
 458         if (y > last)
 459                 y = last;
 460         text->setCursorFromCoordinates(bv_->cursor(), 0, y);
 461
 462         owner_->updateLayoutChoice();
 463 }
 464
 465
 466 void BufferView::Pimpl::scroll(int lines)
 467 {
 468         if (!buffer_)
 469                 return;
 470
 471         LyXText const * t = bv_->text();
 472         int const line_height = defaultRowHeight();
 473
 474         // The new absolute coordinate
 475         int new_top_y = top_y() + lines * line_height;
 476
 477         // Restrict to a valid value
 478         new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
 479         new_top_y = std::max(0, new_top_y);
 480
 481         scrollDocView(new_top_y);
 482
 483         // Update the scrollbar.
 484         workarea().setScrollbarParams(t->height(), top_y(), defaultRowHeight());
 485 }
 486
 487
 488 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 489                                          key_modifier::state state)
 490 {
 491         bv_->owner()->getLyXFunc().processKeySym(key, state);
 492
 493         /* This is perhaps a bit of a hack. When we move
 494          * around, or type, it's nice to be able to see
 495          * the cursor immediately after the keypress. So
 496          * we reset the toggle timeout and force the visibility
 497          * of the cursor. Note we cannot do this inside
 498          * dispatch() itself, because that's called recursively.
 499          */
 500         if (available()) {
 501                 cursor_timeout.restart();
 502                 screen().showCursor(*bv_);
 503         }
 504 }
 505
 506
 507 void BufferView::Pimpl::selectionRequested()
 508 {
 509         static string sel;
 510
 511         if (!available())
 512                 return;
 513
 514         LCursor & cur = bv_->cursor();
 515
 516         if (!cur.selection()) {
 517                 xsel_cache_.set = false;
 518                 return;
 519         }
 520
 521         if (!xsel_cache_.set ||
 522             cur.back() != xsel_cache_.cursor ||
 523             cur.anchor_.back() != xsel_cache_.anchor)
 524         {
 525                 xsel_cache_.cursor = cur.back();
 526                 xsel_cache_.anchor = cur.anchor_.back();
 527                 xsel_cache_.set = cur.selection();
 528                 sel = cur.selectionAsString(false);
 529                 if (!sel.empty())
 530                         workarea().putClipboard(sel);
 531         }
 532 }
 533
 534
 535 void BufferView::Pimpl::selectionLost()
 536 {
 537         if (available()) {
 538                 screen().hideCursor();
 539                 bv_->cursor().clearSelection();
 540                 xsel_cache_.set = false;
 541         }
 542 }
 543
 544
 545 void BufferView::Pimpl::workAreaResize()
 546 {
 547         static int work_area_width;
 548         static int work_area_height;
 549
 550         bool const widthChange = workarea().workWidth() != work_area_width;
 551         bool const heightChange = workarea().workHeight() != work_area_height;
 552
 553         // update from work area
 554         work_area_width = workarea().workWidth();
 555         work_area_height = workarea().workHeight();
 556
 557         if (buffer_ && widthChange) {
 558                 // The visible LyXView need a resize
 559                 resizeCurrentBuffer();
 560         }
 561
 562         if (widthChange || heightChange)
 563                 update();
 564
 565         // always make sure that the scrollbar is sane.
 566         updateScrollbar();
 567         owner_->updateLayoutChoice();
 568 }
 569
 570
 571 void BufferView::Pimpl::update()
 572 {
 573         //lyxerr << "BufferView::Pimpl::update(), buffer: " << buffer_ << endl;
 574         // fix cursor coordinate cache in case something went wrong
 575
 576         // check needed to survive LyX startup
 577         if (buffer_) {
 578                 // update macro store
 579                 buffer_->buildMacros();
 580
 581                 // update all 'visible' paragraphs
 582                 lyx::par_type beg, end;
 583                 getParsInRange(buffer_->paragraphs(),
 584                                top_y(), top_y() + workarea().workHeight(),
 585                                beg, end);
 586                 bv_->text()->redoParagraphs(beg, end);
 587
 588                 // and the scrollbar
 589                 updateScrollbar();
 590         }
 591         screen().redraw(*bv_);
 592         bv_->owner()->view_state_changed();
 593 }
 594
 595
 596 // Callback for cursor timer
 597 void BufferView::Pimpl::cursorToggle()
 598 {
 599         if (buffer_) {
 600                 screen().toggleCursor(*bv_);
 601
 602                 // Use this opportunity to deal with any child processes that
 603                 // have finished but are waiting to communicate this fact
 604                 // to the rest of LyX.
 605                 ForkedcallsController & fcc = ForkedcallsController::get();
 606                 if (fcc.processesCompleted())
 607                         fcc.handleCompletedProcesses();
 608         }
 609
 610         cursor_timeout.restart();
 611 }
 612
 613
 614 bool BufferView::Pimpl::available() const
 615 {
 616         return buffer_ && bv_->text();
 617 }
 618
 619
 620 Change const BufferView::Pimpl::getCurrentChange()
 621 {
 622         if (!bv_->buffer()->params().tracking_changes)
 623                 return Change(Change::UNCHANGED);
 624
 625         LyXText * text = bv_->getLyXText();
 626         LCursor & cur = bv_->cursor();
 627
 628         if (!cur.selection())
 629                 return Change(Change::UNCHANGED);
 630
 631         return text->getPar(cur.selBegin().par()).
 632                         lookupChangeFull(cur.selBegin().pos());
 633 }
 634
 635
 636 void BufferView::Pimpl::savePosition(unsigned int i)
 637 {
 638         if (i >= saved_positions_num)
 639                 return;
 640         BOOST_ASSERT(bv_->cursor().inTexted());
 641         saved_positions[i] = Position(buffer_->fileName(),
 642                                       bv_->cursor().paragraph().id(),
 643                                       bv_->cursor().pos());
 644         if (i > 0)
 645                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 646 }
 647
 648
 649 void BufferView::Pimpl::restorePosition(unsigned int i)
 650 {
 651         if (i >= saved_positions_num)
 652                 return;
 653
 654         string const fname = saved_positions[i].filename;
 655
 656         bv_->cursor().clearSelection();
 657
 658         if (fname != buffer_->fileName()) {
 659                 Buffer * b = 0;
 660                 if (bufferlist.exists(fname))
 661                         b = bufferlist.getBuffer(fname);
 662                 else {
 663                         b = bufferlist.newBuffer(fname);
 664                         ::loadLyXFile(b, fname); // don't ask, just load it
 665                 }
 666                 if (b)
 667                         setBuffer(b);
 668         }
 669
 670         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 671         if (par == buffer_->par_iterator_end())
 672                 return;
 673
 674         bv_->text()->setCursor(bv_->cursor(), par.pit(),
 675                 min(par->size(), saved_positions[i].par_pos));
 676
 677         if (i > 0)
 678                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 679 }
 680
 681
 682 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 683 {
 684         return i < saved_positions_num && !saved_positions[i].filename.empty();
 685 }
 686
 687
 688 void BufferView::Pimpl::switchKeyMap()
 689 {
 690         if (!lyxrc.rtl_support)
 691                 return;
 692
 693         Intl & intl = owner_->getIntl();
 694         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 695                 if (intl.keymap == Intl::PRIMARY)
 696                         intl.KeyMapSec();
 697         } else {
 698                 if (intl.keymap == Intl::SECONDARY)
 699                         intl.KeyMapPrim();
 700         }
 701 }
 702
 703
 704 void BufferView::Pimpl::center()
 705 {
 706         LyXText * text = bv_->text();
 707
 708         bv_->cursor().clearSelection();
 709         int const half_height = workarea().workHeight() / 2;
 710         int new_y = text->cursorY(bv_->cursor().front()) - half_height;
 711         if (new_y < 0)
 712                 new_y = 0;
 713
 714         // FIXME: look at this comment again ...
 715         // This updates top_y() but means the fitCursor() call
 716         // from the update(FITCUR) doesn't realise that we might
 717         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 718         // the scrollbar to be updated as it should, so we have
 719         // to do it manually. Any operation that does a center()
 720         // and also might have moved top_y() must make sure to call
 721         // updateScrollbar() currently. Never mind that this is a
 722         // pretty obfuscated way of updating text->top_y()
 723         top_y(new_y);
 724 }
 725
 726
 727 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 728 {
 729         workarea().putClipboard(stuff);
 730 }
 731
 732
 733 InsetBase * BufferView::Pimpl::getInsetByCode(InsetBase::Code code)
 734 {
 735 #ifdef WITH_WARNINGS
 736 #warning Does not work for mathed. (Still true?)
 737 #endif
 738         // Ok, this is a little bit too brute force but it
 739         // should work for now. Better infrastructure is coming. (Lgb)
 740         LCursor & cur = bv_->cursor();
 741         DocIterator it = cur;
 742         for (it.forwardInset(); it; it.forwardInset()) {
 743                 BOOST_ASSERT(it.nextInset());
 744                 if (it.nextInset()->lyxCode() == code)
 745                                 return it.nextInset();
 746         }
 747         return 0;
 748 }
 749
 750
 751 void BufferView::Pimpl::MenuInsertLyXFile(string const & filenm)
 752 {
 753         string filename = filenm;
 754
 755         if (filename.empty()) {
 756                 // Launch a file browser
 757                 string initpath = lyxrc.document_path;
 758
 759                 if (available()) {
 760                         string const trypath = owner_->buffer()->filePath();
 761                         // If directory is writeable, use this as default.
 762                         if (IsDirWriteable(trypath))
 763                                 initpath = trypath;
 764                 }
 765
 766                 FileDialog fileDlg(_("Select LyX document to insert"),
 767                         LFUN_FILE_INSERT,
 768                         make_pair(string(_("Documents|#o#O")),
 769                                   string(lyxrc.document_path)),
 770                         make_pair(string(_("Examples|#E#e")),
 771                                   string(AddPath(system_lyxdir(), "examples"))));
 772
 773                 FileDialog::Result result =
 774                         fileDlg.open(initpath,
 775                                      FileFilterList(_("LyX Documents (*.lyx)")),
 776                                      string());
 777
 778                 if (result.first == FileDialog::Later)
 779                         return;
 780
 781                 filename = result.second;
 782
 783                 // check selected filename
 784                 if (filename.empty()) {
 785                         owner_->message(_("Canceled."));
 786                         return;
 787                 }
 788         }
 789
 790         // get absolute path of file and add ".lyx" to the filename if
 791         // necessary
 792         filename = FileSearch(string(), filename, "lyx");
 793
 794         string const disp_fn = MakeDisplayPath(filename);
 795         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 796         if (bv_->insertLyXFile(filename))
 797                 owner_->message(bformat(_("Document %1$s inserted."),
 798                                         disp_fn));
 799         else
 800                 owner_->message(bformat(_("Could not insert document %1$s"),
 801                                         disp_fn));
 802 }
 803
 804
 805 void BufferView::Pimpl::trackChanges()
 806 {
 807         Buffer * buf = bv_->buffer();
 808         bool const tracking = buf->params().tracking_changes;
 809
 810         if (!tracking) {
 811                 ParIterator const end = buf->par_iterator_end();
 812                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 813                         it->trackChanges();
 814                 buf->params().tracking_changes = true;
 815
 816                 // we cannot allow undos beyond the freeze point
 817                 buf->undostack().clear();
 818         } else {
 819                 update();
 820                 bv_->text()->setCursor(bv_->cursor(), 0, 0);
 821 #ifdef WITH_WARNINGS
 822 #warning changes FIXME
 823 #endif
 824                 bool found = lyx::find::findNextChange(bv_);
 825                 if (found) {
 826                         owner_->getDialogs().show("changes");
 827                         return;
 828                 }
 829
 830                 ParIterator const end = buf->par_iterator_end();
 831                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 832                         it->untrackChanges();
 833                 buf->params().tracking_changes = false;
 834         }
 835
 836         buf->redostack().clear();
 837 }
 838
 839
 840 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd0)
 841 {
 842         //lyxerr << "BufferView::Pimpl::workAreaDispatch: request: "
 843         //  << cmd << std::endl;
 844         // this is only called for mouse related events including
 845         // LFUN_FILE_OPEN generated by drag-and-drop.
 846         FuncRequest cmd = cmd0;
 847
 848         // handle drag&drop
 849         if (cmd.action == LFUN_FILE_OPEN) {
 850                 owner_->dispatch(cmd);
 851                 return true;
 852         }
 853
 854         cmd.y += bv_->top_y();
 855         if (!bv_->buffer())
 856                 return false;
 857
 858         LCursor cur(*bv_);
 859         cur.push(bv_->buffer()->inset());
 860         cur.selection() = bv_->cursor().selection();
 861
 862         // Doesn't go through lyxfunc, so we need to update
 863         // the layout choice etc. ourselves
 864
 865         // e.g. Qt mouse press when no buffer
 866         if (!available())
 867                 return false;
 868
 869         screen().hideCursor();
 870
 871         // Either the inset under the cursor or the
 872         // surrounding LyXText will handle this event.
 873
 874         // Build temporary cursor.
 875         InsetBase * inset = bv_->text()->editXY(cur, cmd.x, cmd.y);
 876         lyxerr << "hit inset at tip: " << inset << endl;
 877         lyxerr << "created temp cursor:\n" << cur << endl;
 878
 879         // Put anchor at the same position.
 880         cur.resetAnchor();
 881
 882         // Try to dispatch to an non-editable inset near this position
 883         // via the temp cursor. If the inset wishes to change the real
 884         // cursor it has to do so explicitly by using
 885         //  cur.bv().cursor() = cur;  (or similar)'
 886         DispatchResult res;
 887         if (inset)
 888                 inset->dispatch(cur, cmd);
 889
 890         // Now dispatch to the temporary cursor. If the real cursor should
 891         // be modified, the inset's dispatch has to do so explicitly.
 892         if (!res.dispatched())
 893                 res = cur.dispatch(cmd);
 894
 895         if (res.dispatched()) {
 896                 // Redraw if requested or necessary.
 897                 if (fitCursor() || res.update())
 898                         update();
 899         }
 900
 901         // see workAreaKeyPress
 902         cursor_timeout.restart();
 903         screen().showCursor(*bv_);
 904
 905         // skip these when selecting
 906         if (cmd.action != LFUN_MOUSE_MOTION) {
 907                 owner_->updateLayoutChoice();
 908                 owner_->updateToolbars();
 909         }
 910
 911         // slight hack: this is only called currently when we
 912         // clicked somewhere, so we force through the display
 913         // of the new status here.
 914         owner_->clearMessage();
 915         return true;
 916 }
 917
 918
 919 FuncStatus BufferView::Pimpl::getStatus(FuncRequest const & cmd)
 920 {
 921         Buffer * buf = bv_->buffer();
 922
 923         FuncStatus flag;
 924
 925         switch (cmd.action) {
 926
 927         case LFUN_UNDO:
 928                 flag.enabled(!buf->undostack().empty());
 929                 break;
 930         case LFUN_REDO:
 931                 flag.enabled(!buf->redostack().empty());
 932                 break;
 933         case LFUN_FILE_INSERT:
 934         case LFUN_FILE_INSERT_ASCII_PARA:
 935         case LFUN_FILE_INSERT_ASCII:
 936         case LFUN_FONT_STATE:
 937         case LFUN_INSERT_LABEL:
 938         case LFUN_BOOKMARK_SAVE:
 939         case LFUN_REF_GOTO:
 940         case LFUN_WORD_FIND:
 941         case LFUN_WORD_REPLACE:
 942         case LFUN_MARK_OFF:
 943         case LFUN_MARK_ON:
 944         case LFUN_SETMARK:
 945         case LFUN_CENTER:
 946         case LFUN_BEGINNINGBUFSEL:
 947         case LFUN_ENDBUFSEL:
 948                 flag.enabled(true);
 949                 break;
 950         case LFUN_BOOKMARK_GOTO:
 951                 flag.enabled(bv_->isSavedPosition(strToUnsignedInt(cmd.argument)));
 952                 break;
 953         case LFUN_TRACK_CHANGES:
 954                 flag.enabled(true);
 955                 flag.setOnOff(buf->params().tracking_changes);
 956                 break;
 957
 958         case LFUN_MERGE_CHANGES:
 959         case LFUN_ACCEPT_CHANGE: // what about these two
 960         case LFUN_REJECT_CHANGE: // what about these two
 961         case LFUN_ACCEPT_ALL_CHANGES:
 962         case LFUN_REJECT_ALL_CHANGES:
 963                 flag.enabled(buf && buf->params().tracking_changes);
 964                 break;
 965         default:
 966                 flag.enabled(false);
 967         }
 968
 969         return flag;
 970 }
 971
 972
 973
 974 bool BufferView::Pimpl::dispatch(FuncRequest const & cmd)
 975 {
 976         //lyxerr << "BufferView::Pimpl::dispatch  cmd: " << cmd << std::endl;
 977         // Make sure that the cached BufferView is correct.
 978         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
 979                 << " action[" << cmd.action << ']'
 980                 << " arg[" << cmd.argument << ']'
 981                 << " x[" << cmd.x << ']'
 982                 << " y[" << cmd.y << ']'
 983                 << " button[" << cmd.button() << ']'
 984                 << endl;
 985
 986         LCursor & cur = bv_->cursor();
 987
 988         switch (cmd.action) {
 989
 990         case LFUN_UNDO:
 991                 if (available()) {
 992                         cur.message(_("Undo"));
 993                         cur.clearSelection();
 994                         if (!textUndo(*bv_))
 995                                 cur.message(_("No further undo information"));
 996                         update();
 997                         switchKeyMap();
 998                 }
 999                 break;
1000
1001         case LFUN_REDO:
1002                 if (available()) {
1003                         cur.message(_("Redo"));
1004                         cur.clearSelection();
1005                         if (!textRedo(*bv_))
1006                                 cur.message(_("No further redo information"));
1007                         update();
1008                         switchKeyMap();
1009                 }
1010                 break;
1011
1012         case LFUN_FILE_INSERT:
1013                 MenuInsertLyXFile(cmd.argument);
1014                 break;
1015
1016         case LFUN_FILE_INSERT_ASCII_PARA:
1017                 InsertAsciiFile(bv_, cmd.argument, true);
1018                 break;
1019
1020         case LFUN_FILE_INSERT_ASCII:
1021                 InsertAsciiFile(bv_, cmd.argument, false);
1022                 break;
1023
1024         case LFUN_FONT_STATE:
1025                 cur.message(cur.currentState());
1026                 break;
1027
1028         case LFUN_BOOKMARK_SAVE:
1029                 savePosition(strToUnsignedInt(cmd.argument));
1030                 break;
1031
1032         case LFUN_BOOKMARK_GOTO:
1033                 restorePosition(strToUnsignedInt(cmd.argument));
1034                 break;
1035
1036         case LFUN_REF_GOTO: {
1037                 string label = cmd.argument;
1038                 if (label.empty()) {
1039                         InsetRef * inset =
1040                                 static_cast<InsetRef*>(getInsetByCode(InsetBase::REF_CODE));
1041                         if (inset) {
1042                                 label = inset->getContents();
1043                                 savePosition(0);
1044                         }
1045                 }
1046
1047                 if (!label.empty())
1048                         bv_->gotoLabel(label);
1049                 break;
1050         }
1051
1052         case LFUN_TRACK_CHANGES:
1053                 trackChanges();
1054                 break;
1055
1056         case LFUN_MERGE_CHANGES:
1057                 owner_->getDialogs().show("changes");
1058                 break;
1059
1060         case LFUN_ACCEPT_ALL_CHANGES: {
1061                 bv_->cursor().reset(bv_->buffer()->inset());
1062 #ifdef WITH_WARNINGS
1063 #warning FIXME changes
1064 #endif
1065                 while (lyx::find::findNextChange(bv_))
1066                         bv_->getLyXText()->acceptChange(bv_->cursor());
1067                 update();
1068                 break;
1069         }
1070
1071         case LFUN_REJECT_ALL_CHANGES: {
1072                 bv_->cursor().reset(bv_->buffer()->inset());
1073 #ifdef WITH_WARNINGS
1074 #warning FIXME changes
1075 #endif
1076                 while (lyx::find::findNextChange(bv_))
1077                         bv_->getLyXText()->rejectChange(bv_->cursor());
1078                 break;
1079         }
1080
1081         case LFUN_WORD_FIND:
1082                 lyx::find::find(bv_, cmd);
1083                 break;
1084
1085         case LFUN_WORD_REPLACE:
1086                 lyx::find::replace(bv_, cmd);
1087                 break;
1088
1089         case LFUN_MARK_OFF:
1090                 cur.clearSelection();
1091                 cur.resetAnchor();
1092                 cur.message(N_("Mark off"));
1093                 break;
1094
1095         case LFUN_MARK_ON:
1096                 cur.clearSelection();
1097                 cur.mark() = true;
1098                 cur.resetAnchor();
1099                 cur.message(N_("Mark on"));
1100                 break;
1101
1102         case LFUN_SETMARK:
1103                 cur.clearSelection();
1104                 if (cur.mark()) {
1105                         cur.mark() = false;
1106                         cur.message(N_("Mark removed"));
1107                 } else {
1108                         cur.mark() = true;
1109                         cur.message(N_("Mark set"));
1110                 }
1111                 cur.resetAnchor();
1112                 break;
1113
1114         case LFUN_CENTER:
1115                 bv_->center();
1116                 break;
1117
1118         case LFUN_BEGINNINGBUFSEL:
1119                 bv_->cursor().reset(bv_->buffer()->inset());
1120                 if (!cur.selection())
1121                         cur.resetAnchor();
1122                 bv_->text()->cursorTop(cur);
1123                 finishUndo();
1124                 break;
1125
1126         case LFUN_ENDBUFSEL:
1127                 bv_->cursor().reset(bv_->buffer()->inset());
1128                 if (!cur.selection())
1129                         cur.resetAnchor();
1130                 bv_->text()->cursorBottom(cur);
1131                 finishUndo();
1132                 break;
1133
1134         default:
1135                 return false;
1136         }
1137
1138         return true;
1139 }