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