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 "gettext.h"
  33 #include "intl.h"
  34 #include "iterators.h"
  35 #include "lyx_cb.h" // added for Dispatch functions
  36 #include "lyx_main.h"
  37 #include "lyxfind.h"
  38 #include "lyxfunc.h"
  39 #include "lyxtext.h"
  40 #include "lyxrc.h"
  41 #include "lastfiles.h"
  42 #include "paragraph.h"
  43 #include "paragraph_funcs.h"
  44 #include "ParagraphParameters.h"
  45 #include "undo.h"
  46 #include "vspace.h"
  47
  48 #include "insets/insetref.h"
  49
  50 #include "frontends/Alert.h"
  51 #include "frontends/Dialogs.h"
  52 #include "frontends/FileDialog.h"
  53 #include "frontends/LyXView.h"
  54 #include "frontends/LyXScreenFactory.h"
  55 #include "frontends/screen.h"
  56 #include "frontends/WorkArea.h"
  57 #include "frontends/WorkAreaFactory.h"
  58
  59 #include "graphics/Previews.h"
  60
  61 #include "support/filetools.h"
  62 #include "support/globbing.h"
  63 #include "support/path_defines.h"
  64 #include "support/tostr.h"
  65
  66 #include <boost/bind.hpp>
  67
  68 using lyx::pos_type;
  69
  70 using lyx::support::AddPath;
  71 using lyx::support::bformat;
  72 using lyx::support::FileFilterList;
  73 using lyx::support::FileSearch;
  74 using lyx::support::IsDirWriteable;
  75 using lyx::support::MakeDisplayPath;
  76 using lyx::support::strToUnsignedInt;
  77 using lyx::support::system_lyxdir;
  78
  79 using std::endl;
  80 using std::istringstream;
  81 using std::make_pair;
  82 using std::min;
  83 using std::string;
  84
  85
  86 extern BufferList bufferlist;
  87
  88
  89 namespace {
  90
  91 unsigned int const saved_positions_num = 20;
  92
  93 // All the below connection objects are needed because of a bug in some
  94 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
  95 // to these connections we avoid a segfault upon startup, and also at exit.
  96 // (Lgb)
  97
  98 boost::signals::connection dispatchcon;
  99 boost::signals::connection timecon;
 100 boost::signals::connection doccon;
 101 boost::signals::connection resizecon;
 102 boost::signals::connection kpresscon;
 103 boost::signals::connection selectioncon;
 104 boost::signals::connection lostcon;
 105
 106
 107 } // anon namespace
 108
 109
 110 BufferView::Pimpl::Pimpl(BufferView & bv, LyXView * owner,
 111              int xpos, int ypos, int width, int height)
 112         : bv_(&bv), owner_(owner), buffer_(0), cursor_timeout(400),
 113           using_xterm_cursor(false), cursor_(bv)
 114 {
 115         xsel_cache_.set = false;
 116
 117         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 118         screen_.reset(LyXScreenFactory::create(workarea()));
 119
 120         // Setup the signals
 121         doccon = workarea().scrollDocView
 122                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 123         resizecon = workarea().workAreaResize
 124                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 125         dispatchcon = workarea().dispatch
 126                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 127         kpresscon = workarea().workAreaKeyPress
 128                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 129         selectioncon = workarea().selectionRequested
 130                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 131         lostcon = workarea().selectionLost
 132                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 133
 134         timecon = cursor_timeout.timeout
 135                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 136         cursor_timeout.start();
 137         saved_positions.resize(saved_positions_num);
 138 }
 139
 140
 141 void BufferView::Pimpl::addError(ErrorItem const & ei)
 142 {
 143         errorlist_.push_back(ei);
 144 }
 145
 146
 147 void BufferView::Pimpl::showReadonly(bool)
 148 {
 149         owner_->updateWindowTitle();
 150         owner_->getDialogs().updateBufferDependent(false);
 151 }
 152
 153
 154 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 155 {
 156         if (errorConnection_.connected())
 157                 disconnectBuffer();
 158
 159         errorConnection_ =
 160                 buf.error.connect(boost::bind(&BufferView::Pimpl::addError, this, _1));
 161         messageConnection_ =
 162                 buf.message.connect(boost::bind(&LyXView::message, owner_, _1));
 163         busyConnection_ =
 164                 buf.busy.connect(boost::bind(&LyXView::busy, owner_, _1));
 165         titleConnection_ =
 166                 buf.updateTitles.connect(boost::bind(&LyXView::updateWindowTitle, owner_));
 167         timerConnection_ =
 168                 buf.resetAutosaveTimers.connect(boost::bind(&LyXView::resetAutosaveTimer, owner_));
 169         readonlyConnection_ =
 170                 buf.readonly.connect(boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 171         closingConnection_ =
 172                 buf.closing.connect(boost::bind(&BufferView::Pimpl::buffer, this, (Buffer *)0));
 173 }
 174
 175
 176 void BufferView::Pimpl::disconnectBuffer()
 177 {
 178         errorConnection_.disconnect();
 179         messageConnection_.disconnect();
 180         busyConnection_.disconnect();
 181         titleConnection_.disconnect();
 182         timerConnection_.disconnect();
 183         readonlyConnection_.disconnect();
 184         closingConnection_.disconnect();
 185 }
 186
 187
 188 bool BufferView::Pimpl::newFile(string const & filename,
 189                                 string const & tname,
 190                                 bool isNamed)
 191 {
 192         Buffer * b = ::newFile(filename, tname, isNamed);
 193         buffer(b);
 194         return true;
 195 }
 196
 197
 198 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 199 {
 200         // get absolute path of file and add ".lyx" to the filename if
 201         // necessary
 202         string s = FileSearch(string(), filename, "lyx");
 203
 204         bool const found = !s.empty();
 205
 206         if (!found)
 207                 s = filename;
 208
 209         // file already open?
 210         if (bufferlist.exists(s)) {
 211                 string const file = MakeDisplayPath(s, 20);
 212                 string text = bformat(_("The document %1$s is already "
 213                                         "loaded.\n\nDo you want to revert "
 214                                         "to the saved version?"), file);
 215                 int const ret = Alert::prompt(_("Revert to saved document?"),
 216                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 217
 218                 if (ret != 0) {
 219                         buffer(bufferlist.getBuffer(s));
 220                         return true;
 221                 } else {
 222                         // FIXME: should be LFUN_REVERT
 223                         if (!bufferlist.close(bufferlist.getBuffer(s), false))
 224                                 return false;
 225                         // Fall through to new load. (Asger)
 226                 }
 227         }
 228
 229         Buffer * b;
 230
 231         if (found) {
 232                 b = bufferlist.newBuffer(s);
 233                 connectBuffer(*b);
 234                 if (!::loadLyXFile(b, s)) {
 235                         bufferlist.release(b);
 236                         return false;
 237                 }
 238         } else {
 239                 string text = bformat(_("The document %1$s does not yet "
 240                                         "exist.\n\nDo you want to create "
 241                                         "a new document?"), s);
 242                 int const ret = Alert::prompt(_("Create new document?"),
 243                          text, 0, 1, _("&Create"), _("Cancel"));
 244
 245                 if (ret == 0)
 246                         b = ::newFile(s, string(), true);
 247                 else
 248                         return false;
 249         }
 250
 251         buffer(b);
 252         bv_->showErrorList(_("Parse"));
 253
 254         if (tolastfiles)
 255                 LyX::ref().lastfiles().newFile(b->fileName());
 256
 257         return true;
 258 }
 259
 260
 261 WorkArea & BufferView::Pimpl::workarea() const
 262 {
 263         return *workarea_.get();
 264 }
 265
 266
 267 LyXScreen & BufferView::Pimpl::screen() const
 268 {
 269         return *screen_.get();
 270 }
 271
 272
 273 Painter & BufferView::Pimpl::painter() const
 274 {
 275         return workarea().getPainter();
 276 }
 277
 278
 279 void BufferView::Pimpl::top_y(int y)
 280 {
 281         top_y_ = y;
 282 }
 283
 284
 285 int BufferView::Pimpl::top_y() const
 286 {
 287         return top_y_;
 288 }
 289
 290
 291 void BufferView::Pimpl::buffer(Buffer * b)
 292 {
 293         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 294                             << b << ')' << endl;
 295         if (buffer_) {
 296                 disconnectBuffer();
 297                 //delete bv_->text();
 298                 //bv_->setText(0);
 299         }
 300
 301         // reset old cursor
 302         cursor_.reset();
 303
 304         // set current buffer
 305         buffer_ = b;
 306
 307         top_y_ = 0;
 308
 309         // if we're quitting lyx, don't bother updating stuff
 310         if (quitting)
 311                 return;
 312
 313         // if we are closing the buffer, use the first buffer as current
 314         if (!buffer_)
 315                 buffer_ = bufferlist.first();
 316
 317         if (buffer_) {
 318                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 319                 connectBuffer(*buffer_);
 320
 321                 buffer_->text().init(bv_);
 322
 323                 // If we don't have a text object for this, we make one
 324                 if (bv_->text() == 0)
 325                         resizeCurrentBuffer();
 326
 327                 // Buffer-dependent dialogs should be updated or
 328                 // hidden. This should go here because some dialogs (eg ToC)
 329                 // require bv_->text.
 330                 owner_->getDialogs().updateBufferDependent(true);
 331         } else {
 332                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 333                 owner_->getDialogs().hideBufferDependent();
 334         }
 335
 336         update();
 337         updateScrollbar();
 338         owner_->updateMenubar();
 339         owner_->updateToolbar();
 340         owner_->updateLayoutChoice();
 341         owner_->updateWindowTitle();
 342
 343         // Don't forget to update the Layout
 344         if (buffer_)
 345                 owner_->setLayout(bv_->text()->getPar(0)->layout()->name());
 346
 347         if (lyx::graphics::Previews::activated() && buffer_)
 348                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 349 }
 350
 351
 352 bool BufferView::Pimpl::fitCursor()
 353 {
 354         if (screen().fitCursor(bv_)) {
 355                 updateScrollbar();
 356                 return true;
 357         }
 358         return false;
 359 }
 360
 361
 362 void BufferView::Pimpl::redoCurrentBuffer()
 363 {
 364         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 365         if (buffer_ && bv_->text()) {
 366                 resizeCurrentBuffer();
 367                 updateScrollbar();
 368                 owner_->updateLayoutChoice();
 369         }
 370 }
 371
 372
 373 void BufferView::Pimpl::resizeCurrentBuffer()
 374 {
 375         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 376
 377         int par = -1;
 378         int selstartpar = -1;
 379         int selendpar = -1;
 380
 381         pos_type pos = 0;
 382         pos_type selstartpos = 0;
 383         pos_type selendpos = 0;
 384         bool sel = false;
 385         bool mark_set  = false;
 386
 387         owner_->busy(true);
 388
 389         owner_->message(_("Formatting document..."));
 390
 391         LyXText * text = bv_->text();
 392         lyxerr << "### resizeCurrentBuffer: text " << text << endl;
 393         if (!text)
 394                 return;
 395
 396         LCursor & cur = bv_->cursor();
 397         par = cur.par();
 398         pos = cur.pos();
 399         selstartpar = cur.selBegin().par();
 400         selstartpos = cur.selBegin().pos();
 401         selendpar = cur.selEnd().par();
 402         selendpos = cur.selEnd().pos();
 403         sel = cur.selection();
 404         mark_set = cur.mark();
 405         text->init(bv_);
 406         update();
 407
 408         if (par != -1) {
 409                 cur.selection() = true;
 410                 // At this point just to avoid the Delete-Empty-Paragraph-
 411                 // Mechanism when setting the cursor.
 412                 cur.mark() = mark_set;
 413                 if (sel) {
 414                         text->setCursor(cur, selstartpar, selstartpos);
 415                         cur.resetAnchor();
 416                         text->setCursor(cur, selendpar, selendpos);
 417                         cur.setSelection();
 418                         text->setCursor(cur, par, pos);
 419                 } else {
 420                         text->setCursor(cur, par, pos);
 421                         cur.resetAnchor();
 422                         cur.selection() = false;
 423                 }
 424         }
 425
 426         fitCursor();
 427
 428         switchKeyMap();
 429         owner_->busy(false);
 430
 431         // reset the "Formatting..." message
 432         owner_->clearMessage();
 433
 434         updateScrollbar();
 435 }
 436
 437
 438 void BufferView::Pimpl::updateScrollbar()
 439 {
 440         if (!bv_->text()) {
 441                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 442                 workarea().setScrollbarParams(0, 0, 0);
 443                 return;
 444         }
 445
 446         LyXText const & t = *bv_->text();
 447
 448         lyxerr[Debug::GUI] << "Updating scrollbar: h" << t.height()
 449                            << ", top_y()" << top_y() << ", default height "
 450                            << defaultRowHeight() << endl;
 451
 452         workarea().setScrollbarParams(t.height(), top_y(), defaultRowHeight());
 453 }
 454
 455
 456 void BufferView::Pimpl::scrollDocView(int value)
 457 {
 458         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 459
 460         if (!buffer_)
 461                 return;
 462
 463         screen().hideCursor();
 464
 465         top_y(value);
 466         screen().redraw(*bv_);
 467
 468         if (!lyxrc.cursor_follows_scrollbar)
 469                 return;
 470
 471         int const height = defaultRowHeight();
 472         int const first = top_y() + height;
 473         int const last = top_y() + workarea().workHeight() - height;
 474
 475         bv_->cursor().reset();
 476         LyXText * text = bv_->text();
 477         CursorSlice & cur = bv_->cursor().cursor_.front();
 478         int y = text->cursorY(cur);
 479         if (y < first)
 480                 text->setCursorFromCoordinates(bv_->cursor(), 0, first);
 481         else if (y > last)
 482                 text->setCursorFromCoordinates(bv_->cursor(), 0, last);
 483
 484         owner_->updateLayoutChoice();
 485 }
 486
 487
 488 void BufferView::Pimpl::scroll(int lines)
 489 {
 490         if (!buffer_)
 491                 return;
 492
 493         LyXText const * t = bv_->text();
 494         int const line_height = defaultRowHeight();
 495
 496         // The new absolute coordinate
 497         int new_top_y = top_y() + lines * line_height;
 498
 499         // Restrict to a valid value
 500         new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
 501         new_top_y = std::max(0, new_top_y);
 502
 503         scrollDocView(new_top_y);
 504
 505         // Update the scrollbar.
 506         workarea().setScrollbarParams(t->height(), top_y(), defaultRowHeight());
 507 }
 508
 509
 510 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 511                                          key_modifier::state state)
 512 {
 513         bv_->owner()->getLyXFunc().processKeySym(key, state);
 514
 515         /* This is perhaps a bit of a hack. When we move
 516          * around, or type, it's nice to be able to see
 517          * the cursor immediately after the keypress. So
 518          * we reset the toggle timeout and force the visibility
 519          * of the cursor. Note we cannot do this inside
 520          * dispatch() itself, because that's called recursively.
 521          */
 522         if (available()) {
 523                 cursor_timeout.restart();
 524                 screen().showCursor(*bv_);
 525         }
 526 }
 527
 528
 529 void BufferView::Pimpl::selectionRequested()
 530 {
 531         static string sel;
 532
 533         if (!available())
 534                 return;
 535
 536         LCursor & cur = bv_->cursor();
 537
 538         if (!cur.selection()) {
 539                 xsel_cache_.set = false;
 540                 return;
 541         }
 542
 543         if (!xsel_cache_.set ||
 544             cur.cursor_.back() != xsel_cache_.cursor ||
 545             cur.anchor_.back() != xsel_cache_.anchor)
 546         {
 547                 xsel_cache_.cursor = cur.cursor_.back();
 548                 xsel_cache_.anchor = cur.anchor_.back();
 549                 xsel_cache_.set = cur.selection();
 550                 sel = cur.selectionAsString(false);
 551                 if (!sel.empty())
 552                         workarea().putClipboard(sel);
 553         }
 554 }
 555
 556
 557 void BufferView::Pimpl::selectionLost()
 558 {
 559         if (available()) {
 560                 screen().hideCursor();
 561                 bv_->cursor().clearSelection();
 562                 xsel_cache_.set = false;
 563         }
 564 }
 565
 566
 567 void BufferView::Pimpl::workAreaResize()
 568 {
 569         static int work_area_width;
 570         static int work_area_height;
 571
 572         bool const widthChange = workarea().workWidth() != work_area_width;
 573         bool const heightChange = workarea().workHeight() != work_area_height;
 574
 575         // update from work area
 576         work_area_width = workarea().workWidth();
 577         work_area_height = workarea().workHeight();
 578
 579         if (buffer_ && widthChange) {
 580                 // The visible LyXView need a resize
 581                 resizeCurrentBuffer();
 582         }
 583
 584         if (widthChange || heightChange)
 585                 update();
 586
 587         // always make sure that the scrollbar is sane.
 588         updateScrollbar();
 589         owner_->updateLayoutChoice();
 590 }
 591
 592
 593 void BufferView::Pimpl::update()
 594 {
 595         //lyxerr << "BufferView::update()" << endl;
 596         // fix cursor coordinate cache in case something went wrong
 597
 598         // check needed to survive LyX startup
 599         if (bv_->getLyXText()) {
 600                 // update all 'visible' paragraphs
 601                 ParagraphList::iterator beg;
 602                 ParagraphList::iterator end;
 603                 getParsInRange(buffer_->paragraphs(),
 604                                top_y(), top_y() + workarea().workHeight(),
 605                                beg, end);
 606                 bv_->text()->redoParagraphs(beg, end);
 607                 updateScrollbar();
 608         }
 609         screen().redraw(*bv_);
 610 }
 611
 612
 613 // Callback for cursor timer
 614 void BufferView::Pimpl::cursorToggle()
 615 {
 616         if (!buffer_) {
 617                 cursor_timeout.restart();
 618                 return;
 619         }
 620
 621         screen().toggleCursor(*bv_);
 622         cursor_timeout.restart();
 623 }
 624
 625
 626 bool BufferView::Pimpl::available() const
 627 {
 628         return buffer_ && bv_->text();
 629 }
 630
 631
 632 Change const BufferView::Pimpl::getCurrentChange()
 633 {
 634         if (!bv_->buffer()->params().tracking_changes)
 635                 return Change(Change::UNCHANGED);
 636
 637         LyXText * text = bv_->getLyXText();
 638         LCursor & cur = bv_->cursor();
 639
 640         if (!cur.selection())
 641                 return Change(Change::UNCHANGED);
 642
 643         return text->getPar(cur.selBegin())
 644                 ->lookupChangeFull(cur.selBegin().pos());
 645 }
 646
 647
 648 void BufferView::Pimpl::savePosition(unsigned int i)
 649 {
 650         if (i >= saved_positions_num)
 651                 return;
 652         saved_positions[i] = Position(buffer_->fileName(),
 653                                       bv_->text()->cursorPar()->id(),
 654                                       bv_->text()->cursor().pos());
 655         if (i > 0)
 656                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 657 }
 658
 659
 660 void BufferView::Pimpl::restorePosition(unsigned int i)
 661 {
 662         if (i >= saved_positions_num)
 663                 return;
 664
 665         string const fname = saved_positions[i].filename;
 666
 667         bv_->cursor().clearSelection();
 668
 669         if (fname != buffer_->fileName()) {
 670                 Buffer * b = 0;
 671                 if (bufferlist.exists(fname))
 672                         b = bufferlist.getBuffer(fname);
 673                 else {
 674                         b = bufferlist.newBuffer(fname);
 675                         ::loadLyXFile(b, fname); // don't ask, just load it
 676                 }
 677                 if (b)
 678                         buffer(b);
 679         }
 680
 681         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 682         if (par == buffer_->par_iterator_end())
 683                 return;
 684
 685         bv_->text()->setCursor(
 686                 bv_->cursor(),
 687                 bv_->text()->parOffset(par.pit()),
 688                 min(par->size(), saved_positions[i].par_pos));
 689
 690         if (i > 0)
 691                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 692 }
 693
 694
 695 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 696 {
 697         return i < saved_positions_num && !saved_positions[i].filename.empty();
 698 }
 699
 700
 701 void BufferView::Pimpl::switchKeyMap()
 702 {
 703         if (!lyxrc.rtl_support)
 704                 return;
 705
 706         Intl & intl = owner_->getIntl();
 707         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 708                 if (intl.keymap == Intl::PRIMARY)
 709                         intl.KeyMapSec();
 710         } else {
 711                 if (intl.keymap == Intl::SECONDARY)
 712                         intl.KeyMapPrim();
 713         }
 714 }
 715
 716
 717 void BufferView::Pimpl::center()
 718 {
 719         LyXText * text = bv_->text();
 720
 721         bv_->cursor().clearSelection();
 722         int const half_height = workarea().workHeight() / 2;
 723         int new_y = text->cursorY(bv_->cursor().cursor_.front()) - half_height;
 724         if (new_y < 0)
 725                 new_y = 0;
 726
 727         // FIXME: look at this comment again ...
 728         // This updates top_y() but means the fitCursor() call
 729         // from the update(FITCUR) doesn't realise that we might
 730         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 731         // the scrollbar to be updated as it should, so we have
 732         // to do it manually. Any operation that does a center()
 733         // and also might have moved top_y() must make sure to call
 734         // updateScrollbar() currently. Never mind that this is a
 735         // pretty obfuscated way of updating text->top_y()
 736         top_y(new_y);
 737 }
 738
 739
 740 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 741 {
 742         workarea().putClipboard(stuff);
 743 }
 744
 745
 746 InsetBase * BufferView::Pimpl::getInsetByCode(InsetBase::Code code)
 747 {
 748 #warning Does not work for mathed
 749         // Ok, this is a little bit too brute force but it
 750         // should work for now. Better infrastructure is coming. (Lgb)
 751
 752         Buffer * buf = bv_->buffer();
 753         Buffer::inset_iterator beg = buf->inset_iterator_begin();
 754         Buffer::inset_iterator end = buf->inset_iterator_end();
 755
 756         bool cursor_par_seen = false;
 757
 758         LCursor & cur = bv_->cursor();
 759         ParagraphList::iterator pit =  bv_->getLyXText()->getPar(cur.par());
 760
 761         for (; beg != end; ++beg) {
 762                 if (beg.getPar() == pit)
 763                         cursor_par_seen = true;
 764                 if (cursor_par_seen) {
 765                         if (beg.getPar() == pit && beg.getPos() >= cur.pos())
 766                                 break;
 767                         if (beg.getPar() != pit)
 768                                 break;
 769                 }
 770         }
 771         if (beg != end) {
 772                 // Now find the first inset that matches code.
 773                 for (; beg != end; ++beg) {
 774                         if (beg->lyxCode() == code)
 775                                 return &(*beg);
 776                 }
 777         }
 778         return 0;
 779 }
 780
 781
 782 void BufferView::Pimpl::MenuInsertLyXFile(string const & filenm)
 783 {
 784         string filename = filenm;
 785
 786         if (filename.empty()) {
 787                 // Launch a file browser
 788                 string initpath = lyxrc.document_path;
 789
 790                 if (available()) {
 791                         string const trypath = owner_->buffer()->filePath();
 792                         // If directory is writeable, use this as default.
 793                         if (IsDirWriteable(trypath))
 794                                 initpath = trypath;
 795                 }
 796
 797                 FileDialog fileDlg(_("Select LyX document to insert"),
 798                         LFUN_FILE_INSERT,
 799                         make_pair(string(_("Documents|#o#O")),
 800                                   string(lyxrc.document_path)),
 801                         make_pair(string(_("Examples|#E#e")),
 802                                   string(AddPath(system_lyxdir(), "examples"))));
 803
 804                 FileDialog::Result result =
 805                         fileDlg.open(initpath,
 806                                      FileFilterList(_("LyX Documents (*.lyx)")),
 807                                      string());
 808
 809                 if (result.first == FileDialog::Later)
 810                         return;
 811
 812                 filename = result.second;
 813
 814                 // check selected filename
 815                 if (filename.empty()) {
 816                         owner_->message(_("Canceled."));
 817                         return;
 818                 }
 819         }
 820
 821         // get absolute path of file and add ".lyx" to the filename if
 822         // necessary
 823         filename = FileSearch(string(), filename, "lyx");
 824
 825         string const disp_fn = MakeDisplayPath(filename);
 826         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 827         if (bv_->insertLyXFile(filename))
 828                 owner_->message(bformat(_("Document %1$s inserted."),
 829                                         disp_fn));
 830         else
 831                 owner_->message(bformat(_("Could not insert document %1$s"),
 832                                         disp_fn));
 833 }
 834
 835
 836 void BufferView::Pimpl::trackChanges()
 837 {
 838         Buffer * buf = bv_->buffer();
 839         bool const tracking = buf->params().tracking_changes;
 840
 841         if (!tracking) {
 842                 ParIterator const end = buf->par_iterator_end();
 843                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 844                         it->trackChanges();
 845                 buf->params().tracking_changes = true;
 846
 847                 // we cannot allow undos beyond the freeze point
 848                 buf->undostack().clear();
 849         } else {
 850                 update();
 851                 bv_->text()->setCursor(bv_->cursor(), 0, 0);
 852 #warning changes FIXME
 853                 bool found = lyx::find::findNextChange(bv_);
 854                 if (found) {
 855                         owner_->getDialogs().show("changes");
 856                         return;
 857                 }
 858
 859                 ParIterator const end = buf->par_iterator_end();
 860                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 861                         it->untrackChanges();
 862                 buf->params().tracking_changes = false;
 863         }
 864
 865         buf->redostack().clear();
 866 }
 867
 868
 869 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd0)
 870 {
 871         //
 872         // this is only called for mouse related events (including
 873         // LFUN_FILE_OPEN generated by drag-and-drop)
 874         //
 875         FuncRequest cmd = cmd0;
 876         cmd.y += bv_->top_y();
 877         //lyxerr << "*** workAreaDispatch: request: " << cmd << std::endl;
 878         LCursor cur(*bv_);
 879         cur.selection() = bv_->cursor().selection();
 880         switch (cmd.action) {
 881
 882 #if 0
 883         case LFUN_MOUSE_MOTION: {
 884                 if (!available())
 885                         return false;
 886                 FuncRequest cmd1 = cmd;
 887                 InsetBase * inset = cur.inset();
 888                 DispatchResult res;
 889                 if (inset) {
 890                         res = inset->dispatch(cur, cmd);
 891                 } else {
 892                         res = bv_->text()->dispatch(cur, cmd);
 893                 }
 894
 895                 if (fitCursor() || res.update()) {
 896                         update();
 897                         cur.updatePos();
 898                 }
 899                 return true;
 900         }
 901 #else
 902         case LFUN_MOUSE_MOTION:
 903 #endif
 904
 905         case LFUN_MOUSE_PRESS:
 906         case LFUN_MOUSE_RELEASE:
 907         case LFUN_MOUSE_DOUBLE:
 908         case LFUN_MOUSE_TRIPLE: {
 909                 // We pass those directly to the Bufferview, since
 910                 // otherwise selection handling breaks down
 911
 912                 // Doesn't go through lyxfunc, so we need to update
 913                 // the layout choice etc. ourselves
 914
 915                 // e.g. Qt mouse press when no buffer
 916                 if (!available())
 917                         return false;
 918
 919                 screen().hideCursor();
 920
 921                 // either the inset under the cursor or the
 922                 // surrounding LyXText will handle this event.
 923
 924                 // built temporary path to inset
 925                 InsetBase * inset = bv_->text()->editXY(cur, cmd.x, cmd.y);
 926                 lyxerr << "hit inset at tip: " << inset << endl;
 927                 lyxerr << "created temp cursor:\n" << cur << endl;
 928
 929                 // Try to dispatch to an non-editable inset near this position
 930                 DispatchResult res;
 931                 if (inset)
 932                         inset->dispatch(cur, cmd);
 933
 934                 // Dispatch to the temp cursor.
 935                 // An inset (or LyXText) can assign this to bv->cursor()
 936                 // if it wishes to do so.
 937                 if (!res.dispatched())
 938                         res = cur.dispatch(cmd);
 939
 940                 if (fitCursor() || res.update())
 941                         update();
 942
 943                 // see workAreaKeyPress
 944                 cursor_timeout.restart();
 945                 screen().showCursor(*bv_);
 946
 947                 // skip these when selecting
 948                 if (cmd.action != LFUN_MOUSE_MOTION) {
 949                         owner_->updateLayoutChoice();
 950                         owner_->updateToolbar();
 951                 }
 952
 953                 // slight hack: this is only called currently when we
 954                 // clicked somewhere, so we force through the display
 955                 // of the new status here.
 956                 owner_->clearMessage();
 957                 return true;
 958         }
 959
 960         case LFUN_FILE_OPEN:
 961                 owner_->dispatch(cmd);
 962                 return true;
 963
 964         default:
 965                 BOOST_ASSERT(false);
 966         }
 967         return true;
 968 }
 969
 970
 971 bool BufferView::Pimpl::dispatch(FuncRequest const & cmd)
 972 {
 973         //lyxerr << "*** BufferView::Pimpl: request: " << cmd << std::endl;
 974         // Make sure that the cached BufferView is correct.
 975         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
 976                 << " action[" << cmd.action << ']'
 977                 << " arg[" << cmd.argument << ']'
 978                 << " x[" << cmd.x << ']'
 979                 << " y[" << cmd.y << ']'
 980                 << " button[" << cmd.button() << ']'
 981                 << endl;
 982
 983         LCursor & cur = bv_->cursor();
 984
 985         switch (cmd.action) {
 986
 987         case LFUN_UNDO:
 988                 if (available()) {
 989                         cur.message(_("Undo"));
 990                         cur.clearSelection();
 991                         if (!textUndo(*bv_))
 992                                 cur.message(_("No further undo information"));
 993                         update();
 994                         switchKeyMap();
 995                 }
 996                 break;
 997
 998         case LFUN_REDO:
 999                 if (available()) {
1000                         cur.message(_("Redo"));
1001                         cur.clearSelection();
1002                         if (!textRedo(*bv_))
1003                                 cur.message(_("No further redo information"));
1004                         update();
1005                         switchKeyMap();
1006                 }
1007                 break;
1008
1009         case LFUN_FILE_INSERT:
1010                 MenuInsertLyXFile(cmd.argument);
1011                 break;
1012
1013         case LFUN_FILE_INSERT_ASCII_PARA:
1014                 InsertAsciiFile(bv_, cmd.argument, true);
1015                 break;
1016
1017         case LFUN_FILE_INSERT_ASCII:
1018                 InsertAsciiFile(bv_, cmd.argument, false);
1019                 break;
1020
1021         case LFUN_FONT_STATE:
1022                 cur.message(cur.currentState());
1023                 break;
1024
1025         case LFUN_INSERT_LABEL: {
1026                 // Try and generate a valid label
1027                 string const contents = cmd.argument.empty() ?
1028                         cur.getPossibleLabel() : cmd.argument;
1029                 InsetCommandParams icp("label", contents);
1030                 string data = InsetCommandMailer::params2string("label", icp);
1031                 owner_->getDialogs().show("label", data, 0);
1032                 break;
1033         }
1034
1035         case LFUN_BOOKMARK_SAVE:
1036                 savePosition(strToUnsignedInt(cmd.argument));
1037                 break;
1038
1039         case LFUN_BOOKMARK_GOTO:
1040                 restorePosition(strToUnsignedInt(cmd.argument));
1041                 break;
1042
1043         case LFUN_REF_GOTO: {
1044                 string label = cmd.argument;
1045                 if (label.empty()) {
1046                         InsetRef * inset =
1047                                 static_cast<InsetRef*>(getInsetByCode(InsetBase::REF_CODE));
1048                         if (inset) {
1049                                 label = inset->getContents();
1050                                 savePosition(0);
1051                         }
1052                 }
1053
1054                 if (!label.empty())
1055                         bv_->gotoLabel(label);
1056                 break;
1057         }
1058
1059         case LFUN_TRACK_CHANGES:
1060                 trackChanges();
1061                 break;
1062
1063         case LFUN_MERGE_CHANGES:
1064                 owner_->getDialogs().show("changes");
1065                 break;
1066
1067         case LFUN_ACCEPT_ALL_CHANGES: {
1068                 bv_->cursor().reset();
1069 #warning FIXME changes
1070                 while (lyx::find::findNextChange(bv_))
1071                         bv_->getLyXText()->acceptChange(bv_->cursor());
1072                 update();
1073                 break;
1074         }
1075
1076         case LFUN_REJECT_ALL_CHANGES: {
1077                 bv_->cursor().reset();
1078 #warning FIXME changes
1079                 while (lyx::find::findNextChange(bv_))
1080                         bv_->getLyXText()->rejectChange(bv_->cursor());
1081                 update();
1082                 break;
1083         }
1084
1085         case LFUN_WORD_FIND:
1086                 lyx::find::find(bv_, cmd);
1087                 break;
1088
1089         case LFUN_WORD_REPLACE:
1090                 lyx::find::replace(bv_, cmd);
1091                 break;
1092
1093         case LFUN_MARK_OFF:
1094                 cur.clearSelection();
1095                 update();
1096                 cur.resetAnchor();
1097                 cur.message(N_("Mark off"));
1098                 break;
1099
1100         case LFUN_MARK_ON:
1101                 cur.clearSelection();
1102                 cur.mark() = true;
1103                 update();
1104                 cur.resetAnchor();
1105                 cur.message(N_("Mark on"));
1106                 break;
1107
1108         case LFUN_SETMARK:
1109                 cur.clearSelection();
1110                 if (cur.mark()) {
1111                         cur.message(N_("Mark removed"));
1112                 } else {
1113                         cur.mark() = true;
1114                         cur.message(N_("Mark set"));
1115                 }
1116                 cur.resetAnchor();
1117                 update();
1118                 break;
1119
1120         case LFUN_UNKNOWN_ACTION:
1121                 cur.errorMessage(N_("Unknown function!"));
1122                 break;
1123
1124         case LFUN_CENTER:
1125                 bv_->center();
1126                 break;
1127
1128         default:
1129                 return false;
1130         }
1131
1132         return true;
1133 }