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         // this is enough to get the right y cursor info for fitCursor
 362         cursor_[0].text()->redoParagraph(cursor_[0].par());
 363
 364         if (!screen().fitCursor(bv_))
 365                 return false;
 366
 367         updateScrollbar();
 368         return true;
 369 }
 370
 371
 372 void BufferView::Pimpl::redoCurrentBuffer()
 373 {
 374         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 375         if (buffer_ && bv_->text()) {
 376                 resizeCurrentBuffer();
 377                 updateScrollbar();
 378                 owner_->updateLayoutChoice();
 379         }
 380 }
 381
 382
 383 void BufferView::Pimpl::resizeCurrentBuffer()
 384 {
 385         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 386         owner_->busy(true);
 387         owner_->message(_("Formatting document..."));
 388
 389         LyXText * text = bv_->text();
 390         if (!text)
 391                 return;
 392
 393         text->init(bv_);
 394         update();
 395         fitCursor();
 396
 397         switchKeyMap();
 398         owner_->busy(false);
 399
 400         // reset the "Formatting..." message
 401         owner_->clearMessage();
 402
 403         updateScrollbar();
 404 }
 405
 406
 407 void BufferView::Pimpl::updateScrollbar()
 408 {
 409         if (!bv_->text()) {
 410                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 411                 lyxerr << "no text in updateScrollbar" << endl;
 412                 workarea().setScrollbarParams(0, 0, 0);
 413                 return;
 414         }
 415
 416         LyXText const & t = *bv_->text();
 417
 418         lyxerr[Debug::GUI]
 419                 << "Updating scrollbar: height: " << t.height()
 420                 << " top_y: " << top_y()
 421                 << " default height " << defaultRowHeight() << endl;
 422
 423         workarea().setScrollbarParams(t.height(), top_y(), defaultRowHeight());
 424 }
 425
 426
 427 void BufferView::Pimpl::scrollDocView(int value)
 428 {
 429         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 430
 431         if (!buffer_)
 432                 return;
 433
 434         screen().hideCursor();
 435
 436         top_y(value);
 437         screen().redraw(*bv_);
 438
 439         if (!lyxrc.cursor_follows_scrollbar)
 440                 return;
 441
 442         int const height = defaultRowHeight();
 443         int const first = top_y() + height;
 444         int const last = top_y() + workarea().workHeight() - height;
 445
 446         bv_->cursor().reset(bv_->buffer()->inset());
 447         LyXText * text = bv_->text();
 448         int y = text->cursorY(bv_->cursor().front());
 449         if (y < first)
 450                 y = first;
 451         if (y > last)
 452                 y = last;
 453         text->setCursorFromCoordinates(bv_->cursor(), 0, y);
 454
 455         owner_->updateLayoutChoice();
 456 }
 457
 458
 459 void BufferView::Pimpl::scroll(int lines)
 460 {
 461         if (!buffer_)
 462                 return;
 463
 464         LyXText const * t = bv_->text();
 465         int const line_height = defaultRowHeight();
 466
 467         // The new absolute coordinate
 468         int new_top_y = top_y() + lines * line_height;
 469
 470         // Restrict to a valid value
 471         new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
 472         new_top_y = std::max(0, new_top_y);
 473
 474         scrollDocView(new_top_y);
 475
 476         // Update the scrollbar.
 477         workarea().setScrollbarParams(t->height(), top_y(), defaultRowHeight());
 478 }
 479
 480
 481 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 482                                          key_modifier::state state)
 483 {
 484         bv_->owner()->getLyXFunc().processKeySym(key, state);
 485
 486         /* This is perhaps a bit of a hack. When we move
 487          * around, or type, it's nice to be able to see
 488          * the cursor immediately after the keypress. So
 489          * we reset the toggle timeout and force the visibility
 490          * of the cursor. Note we cannot do this inside
 491          * dispatch() itself, because that's called recursively.
 492          */
 493         if (available()) {
 494                 cursor_timeout.restart();
 495                 screen().showCursor(*bv_);
 496         }
 497 }
 498
 499
 500 void BufferView::Pimpl::selectionRequested()
 501 {
 502         static string sel;
 503
 504         if (!available())
 505                 return;
 506
 507         LCursor & cur = bv_->cursor();
 508
 509         if (!cur.selection()) {
 510                 xsel_cache_.set = false;
 511                 return;
 512         }
 513
 514         if (!xsel_cache_.set ||
 515             cur.back() != xsel_cache_.cursor ||
 516             cur.anchor_.back() != xsel_cache_.anchor)
 517         {
 518                 xsel_cache_.cursor = cur.back();
 519                 xsel_cache_.anchor = cur.anchor_.back();
 520                 xsel_cache_.set = cur.selection();
 521                 sel = cur.selectionAsString(false);
 522                 if (!sel.empty())
 523                         workarea().putClipboard(sel);
 524         }
 525 }
 526
 527
 528 void BufferView::Pimpl::selectionLost()
 529 {
 530         if (available()) {
 531                 screen().hideCursor();
 532                 bv_->cursor().clearSelection();
 533                 xsel_cache_.set = false;
 534         }
 535 }
 536
 537
 538 void BufferView::Pimpl::workAreaResize()
 539 {
 540         static int work_area_width;
 541         static int work_area_height;
 542
 543         bool const widthChange = workarea().workWidth() != work_area_width;
 544         bool const heightChange = workarea().workHeight() != work_area_height;
 545
 546         // update from work area
 547         work_area_width = workarea().workWidth();
 548         work_area_height = workarea().workHeight();
 549
 550         if (buffer_ && widthChange) {
 551                 // The visible LyXView need a resize
 552                 resizeCurrentBuffer();
 553         }
 554
 555         if (widthChange || heightChange)
 556                 update();
 557
 558         // always make sure that the scrollbar is sane.
 559         updateScrollbar();
 560         owner_->updateLayoutChoice();
 561 }
 562
 563
 564 void BufferView::Pimpl::update()
 565 {
 566         //lyxerr << "BufferView::Pimpl::update(), buffer: " << buffer_ << endl;
 567         // fix cursor coordinate cache in case something went wrong
 568
 569         // check needed to survive LyX startup
 570         if (buffer_) {
 571                 // update all 'visible' paragraphs
 572                 lyx::par_type beg, end;
 573                 getParsInRange(buffer_->paragraphs(),
 574                                top_y(), top_y() + workarea().workHeight(),
 575                                beg, end);
 576                 bv_->text()->redoParagraphs(beg, end);
 577                 updateScrollbar();
 578         }
 579         screen().redraw(*bv_);
 580         bv_->owner()->view_state_changed();
 581 }
 582
 583
 584 // Callback for cursor timer
 585 void BufferView::Pimpl::cursorToggle()
 586 {
 587         if (buffer_) {
 588                 screen().toggleCursor(*bv_);
 589
 590                 // Use this opportunity to deal with any child processes that
 591                 // have finished but are waiting to communicate this fact
 592                 // to the rest of LyX.
 593                 ForkedcallsController & fcc = ForkedcallsController::get();
 594                 if (fcc.processesCompleted())
 595                         fcc.handleCompletedProcesses();
 596         }
 597
 598         cursor_timeout.restart();
 599 }
 600
 601
 602 bool BufferView::Pimpl::available() const
 603 {
 604         return buffer_ && bv_->text();
 605 }
 606
 607
 608 Change const BufferView::Pimpl::getCurrentChange()
 609 {
 610         if (!bv_->buffer()->params().tracking_changes)
 611                 return Change(Change::UNCHANGED);
 612
 613         LyXText * text = bv_->getLyXText();
 614         LCursor & cur = bv_->cursor();
 615
 616         if (!cur.selection())
 617                 return Change(Change::UNCHANGED);
 618
 619         return text->getPar(cur.selBegin().par()).
 620                         lookupChangeFull(cur.selBegin().pos());
 621 }
 622
 623
 624 void BufferView::Pimpl::savePosition(unsigned int i)
 625 {
 626         if (i >= saved_positions_num)
 627                 return;
 628         BOOST_ASSERT(bv_->cursor().inTexted());
 629         saved_positions[i] = Position(buffer_->fileName(),
 630                                       bv_->cursor().paragraph().id(),
 631                                       bv_->cursor().pos());
 632         if (i > 0)
 633                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 634 }
 635
 636
 637 void BufferView::Pimpl::restorePosition(unsigned int i)
 638 {
 639         if (i >= saved_positions_num)
 640                 return;
 641
 642         string const fname = saved_positions[i].filename;
 643
 644         bv_->cursor().clearSelection();
 645
 646         if (fname != buffer_->fileName()) {
 647                 Buffer * b = 0;
 648                 if (bufferlist.exists(fname))
 649                         b = bufferlist.getBuffer(fname);
 650                 else {
 651                         b = bufferlist.newBuffer(fname);
 652                         ::loadLyXFile(b, fname); // don't ask, just load it
 653                 }
 654                 if (b)
 655                         setBuffer(b);
 656         }
 657
 658         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 659         if (par == buffer_->par_iterator_end())
 660                 return;
 661
 662         bv_->text()->setCursor(bv_->cursor(), par.pit(),
 663                 min(par->size(), saved_positions[i].par_pos));
 664
 665         if (i > 0)
 666                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 667 }
 668
 669
 670 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 671 {
 672         return i < saved_positions_num && !saved_positions[i].filename.empty();
 673 }
 674
 675
 676 void BufferView::Pimpl::switchKeyMap()
 677 {
 678         if (!lyxrc.rtl_support)
 679                 return;
 680
 681         Intl & intl = owner_->getIntl();
 682         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 683                 if (intl.keymap == Intl::PRIMARY)
 684                         intl.KeyMapSec();
 685         } else {
 686                 if (intl.keymap == Intl::SECONDARY)
 687                         intl.KeyMapPrim();
 688         }
 689 }
 690
 691
 692 void BufferView::Pimpl::center()
 693 {
 694         LyXText * text = bv_->text();
 695
 696         bv_->cursor().clearSelection();
 697         int const half_height = workarea().workHeight() / 2;
 698         int new_y = text->cursorY(bv_->cursor().front()) - half_height;
 699         if (new_y < 0)
 700                 new_y = 0;
 701
 702         // FIXME: look at this comment again ...
 703         // This updates top_y() but means the fitCursor() call
 704         // from the update(FITCUR) doesn't realise that we might
 705         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 706         // the scrollbar to be updated as it should, so we have
 707         // to do it manually. Any operation that does a center()
 708         // and also might have moved top_y() must make sure to call
 709         // updateScrollbar() currently. Never mind that this is a
 710         // pretty obfuscated way of updating text->top_y()
 711         top_y(new_y);
 712 }
 713
 714
 715 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 716 {
 717         workarea().putClipboard(stuff);
 718 }
 719
 720
 721 InsetBase * BufferView::Pimpl::getInsetByCode(InsetBase::Code /*code*/)
 722 {
 723 #warning Does not work for mathed
 724         // Ok, this is a little bit too brute force but it
 725         // should work for now. Better infrastructure is coming. (Lgb)
 726
 727 #warning FIXME
 728 #if 0
 729         Buffer * buf = bv_->buffer();
 730         InsetIterator beg = inset_iterator_begin(buf->inset());
 731
 732         bool cursor_par_seen = false;
 733
 734         LCursor & cur = bv_->cursor();
 735         LyXText * = bv_->getLyXText();
 736         ParagraphList::iterator pit = text->getPar(cur.par());
 737
 738         for (; beg; ++beg) {
 739                 if (beg.par() == pit)
 740                         cursor_par_seen = true;
 741                 if (cursor_par_seen) {
 742                         if (beg.par() == pit && beg.pos() >= cur.pos())
 743                                 break;
 744                         if (beg.getPar() != pit)
 745                                 break;
 746                 }
 747         }
 748         if (beg) {
 749                 // Now find the first inset that matches code.
 750                 for (; beg; ++beg) {
 751                         if (beg->lyxCode() == code)
 752                                 return &(*beg);
 753                 }
 754         }
 755 #endif
 756         return 0;
 757 }
 758
 759
 760 void BufferView::Pimpl::MenuInsertLyXFile(string const & filenm)
 761 {
 762         string filename = filenm;
 763
 764         if (filename.empty()) {
 765                 // Launch a file browser
 766                 string initpath = lyxrc.document_path;
 767
 768                 if (available()) {
 769                         string const trypath = owner_->buffer()->filePath();
 770                         // If directory is writeable, use this as default.
 771                         if (IsDirWriteable(trypath))
 772                                 initpath = trypath;
 773                 }
 774
 775                 FileDialog fileDlg(_("Select LyX document to insert"),
 776                         LFUN_FILE_INSERT,
 777                         make_pair(string(_("Documents|#o#O")),
 778                                   string(lyxrc.document_path)),
 779                         make_pair(string(_("Examples|#E#e")),
 780                                   string(AddPath(system_lyxdir(), "examples"))));
 781
 782                 FileDialog::Result result =
 783                         fileDlg.open(initpath,
 784                                      FileFilterList(_("LyX Documents (*.lyx)")),
 785                                      string());
 786
 787                 if (result.first == FileDialog::Later)
 788                         return;
 789
 790                 filename = result.second;
 791
 792                 // check selected filename
 793                 if (filename.empty()) {
 794                         owner_->message(_("Canceled."));
 795                         return;
 796                 }
 797         }
 798
 799         // get absolute path of file and add ".lyx" to the filename if
 800         // necessary
 801         filename = FileSearch(string(), filename, "lyx");
 802
 803         string const disp_fn = MakeDisplayPath(filename);
 804         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 805         if (bv_->insertLyXFile(filename))
 806                 owner_->message(bformat(_("Document %1$s inserted."),
 807                                         disp_fn));
 808         else
 809                 owner_->message(bformat(_("Could not insert document %1$s"),
 810                                         disp_fn));
 811 }
 812
 813
 814 void BufferView::Pimpl::trackChanges()
 815 {
 816         Buffer * buf = bv_->buffer();
 817         bool const tracking = buf->params().tracking_changes;
 818
 819         if (!tracking) {
 820                 ParIterator const end = buf->par_iterator_end();
 821                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 822                         it->trackChanges();
 823                 buf->params().tracking_changes = true;
 824
 825                 // we cannot allow undos beyond the freeze point
 826                 buf->undostack().clear();
 827         } else {
 828                 update();
 829                 bv_->text()->setCursor(bv_->cursor(), 0, 0);
 830 #warning changes FIXME
 831                 bool found = lyx::find::findNextChange(bv_);
 832                 if (found) {
 833                         owner_->getDialogs().show("changes");
 834                         return;
 835                 }
 836
 837                 ParIterator const end = buf->par_iterator_end();
 838                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 839                         it->untrackChanges();
 840                 buf->params().tracking_changes = false;
 841         }
 842
 843         buf->redostack().clear();
 844 }
 845
 846
 847 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd0)
 848 {
 849         // this is only called for mouse related events including
 850         // LFUN_FILE_OPEN generated by drag-and-drop.
 851         FuncRequest cmd = cmd0;
 852
 853         // handle drag&deop
 854         if (cmd.action == LFUN_FILE_OPEN) {
 855                 owner_->dispatch(cmd);
 856                 return true;
 857         }
 858
 859         cmd.y += bv_->top_y();
 860         //lyxerr << "*** workAreaDispatch: request: " << cmd << std::endl;
 861         LCursor cur(*bv_);
 862         cur.push(bv_->buffer()->inset());
 863         cur.resetAnchor();
 864         cur.selection() = bv_->cursor().selection();
 865
 866         // Doesn't go through lyxfunc, so we need to update
 867         // the layout choice etc. ourselves
 868
 869         // e.g. Qt mouse press when no buffer
 870         if (!available())
 871                 return false;
 872
 873         screen().hideCursor();
 874
 875         // either the inset under the cursor or the
 876         // surrounding LyXText will handle this event.
 877
 878         // built temporary path to inset
 879         InsetBase * inset = bv_->text()->editXY(cur, cmd.x, cmd.y);
 880         lyxerr << "hit inset at tip: " << inset << endl;
 881         lyxerr << "created temp cursor:\n" << cur << endl;
 882
 883         // Try to dispatch to an non-editable inset near this position
 884         // via the temp cursor. If the inset wishes to change the real
 885         // cursor it has to do so explicitly by using
 886         //  cur.bv().cursor() = cur;  (or similar)'
 887         DispatchResult res;
 888         if (inset)
 889                 inset->dispatch(cur, cmd);
 890
 891         // Now dispatch to the real cursor. Any change to the cursor
 892         // is immediate.
 893         if (!res.dispatched())
 894                 res = cur.dispatch(cmd);
 895
 896         // If the request was dispatched the temp cursor should have been
 897         // in a way to be used as new 'real' cursor.
 898         if (res.dispatched()) {
 899                 bv_->cursor() = cur;
 900                 // Redraw if requested or necessary.
 901                 if (fitCursor() || res.update())
 902                         update();
 903         }
 904
 905         // see workAreaKeyPress
 906         cursor_timeout.restart();
 907         screen().showCursor(*bv_);
 908
 909         // skip these when selecting
 910         if (cmd.action != LFUN_MOUSE_MOTION) {
 911                 owner_->updateLayoutChoice();
 912                 owner_->updateToolbar();
 913         }
 914
 915         // slight hack: this is only called currently when we
 916         // clicked somewhere, so we force through the display
 917         // of the new status here.
 918         owner_->clearMessage();
 919         return true;
 920 }
 921
 922
 923 FuncStatus BufferView::Pimpl::getStatus(FuncRequest const & cmd)
 924 {
 925         Buffer * buf = bv_->buffer();
 926
 927         FuncStatus flag;
 928
 929         switch (cmd.action) {
 930
 931         case LFUN_UNDO:
 932                 flag.enabled(!buf->undostack().empty());
 933                 break;
 934         case LFUN_REDO:
 935                 flag.enabled(!buf->redostack().empty());
 936                 break;
 937         case LFUN_FILE_INSERT:
 938         case LFUN_FILE_INSERT_ASCII_PARA:
 939         case LFUN_FILE_INSERT_ASCII:
 940         case LFUN_FONT_STATE:
 941         case LFUN_INSERT_LABEL:
 942         case LFUN_BOOKMARK_SAVE:
 943         case LFUN_REF_GOTO:
 944         case LFUN_WORD_FIND:
 945         case LFUN_WORD_REPLACE:
 946         case LFUN_MARK_OFF:
 947         case LFUN_MARK_ON:
 948         case LFUN_SETMARK:
 949         case LFUN_CENTER:
 950         case LFUN_BEGINNINGBUFSEL:
 951         case LFUN_ENDBUFSEL:
 952                 flag.enabled(true);
 953                 break;
 954         case LFUN_BOOKMARK_GOTO:
 955                 flag.enabled(bv_->isSavedPosition(strToUnsignedInt(cmd.argument)));
 956                 break;
 957         case LFUN_TRACK_CHANGES:
 958                 flag.enabled(true);
 959                 flag.setOnOff(buf->params().tracking_changes);
 960                 break;
 961
 962         case LFUN_MERGE_CHANGES:
 963         case LFUN_ACCEPT_CHANGE: // what about these two
 964         case LFUN_REJECT_CHANGE: // what about these two
 965         case LFUN_ACCEPT_ALL_CHANGES:
 966         case LFUN_REJECT_ALL_CHANGES:
 967                 flag.enabled(buf && buf->params().tracking_changes);
 968                 break;
 969         default:
 970                 flag.enabled(false);
 971         }
 972
 973         return flag;
 974 }
 975
 976
 977
 978 bool BufferView::Pimpl::dispatch(FuncRequest const & cmd)
 979 {
 980         //lyxerr << "BufferView::Pimpl::dispatch  cmd: " << cmd << std::endl;
 981         // Make sure that the cached BufferView is correct.
 982         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
 983                 << " action[" << cmd.action << ']'
 984                 << " arg[" << cmd.argument << ']'
 985                 << " x[" << cmd.x << ']'
 986                 << " y[" << cmd.y << ']'
 987                 << " button[" << cmd.button() << ']'
 988                 << endl;
 989
 990         LCursor & cur = bv_->cursor();
 991
 992         switch (cmd.action) {
 993
 994         case LFUN_UNDO:
 995                 if (available()) {
 996                         cur.message(_("Undo"));
 997                         cur.clearSelection();
 998                         if (!textUndo(*bv_))
 999                                 cur.message(_("No further undo information"));
1000                         update();
1001                         switchKeyMap();
1002                 }
1003                 break;
1004
1005         case LFUN_REDO:
1006                 if (available()) {
1007                         cur.message(_("Redo"));
1008                         cur.clearSelection();
1009                         if (!textRedo(*bv_))
1010                                 cur.message(_("No further redo information"));
1011                         update();
1012                         switchKeyMap();
1013                 }
1014                 break;
1015
1016         case LFUN_FILE_INSERT:
1017                 MenuInsertLyXFile(cmd.argument);
1018                 break;
1019
1020         case LFUN_FILE_INSERT_ASCII_PARA:
1021                 InsertAsciiFile(bv_, cmd.argument, true);
1022                 break;
1023
1024         case LFUN_FILE_INSERT_ASCII:
1025                 InsertAsciiFile(bv_, cmd.argument, false);
1026                 break;
1027
1028         case LFUN_FONT_STATE:
1029                 cur.message(cur.currentState());
1030                 break;
1031
1032         case LFUN_INSERT_LABEL: {
1033                 // Try and generate a valid label
1034                 string const contents = cmd.argument.empty() ?
1035                         cur.getPossibleLabel() : cmd.argument;
1036                 InsetCommandParams icp("label", contents);
1037                 string data = InsetCommandMailer::params2string("label", icp);
1038                 owner_->getDialogs().show("label", data, 0);
1039                 break;
1040         }
1041
1042         case LFUN_BOOKMARK_SAVE:
1043                 savePosition(strToUnsignedInt(cmd.argument));
1044                 break;
1045
1046         case LFUN_BOOKMARK_GOTO:
1047                 restorePosition(strToUnsignedInt(cmd.argument));
1048                 break;
1049
1050         case LFUN_REF_GOTO: {
1051                 string label = cmd.argument;
1052                 if (label.empty()) {
1053                         InsetRef * inset =
1054                                 static_cast<InsetRef*>(getInsetByCode(InsetBase::REF_CODE));
1055                         if (inset) {
1056                                 label = inset->getContents();
1057                                 savePosition(0);
1058                         }
1059                 }
1060
1061                 if (!label.empty())
1062                         bv_->gotoLabel(label);
1063                 break;
1064         }
1065
1066         case LFUN_TRACK_CHANGES:
1067                 trackChanges();
1068                 break;
1069
1070         case LFUN_MERGE_CHANGES:
1071                 owner_->getDialogs().show("changes");
1072                 break;
1073
1074         case LFUN_ACCEPT_ALL_CHANGES: {
1075                 bv_->cursor().reset(bv_->buffer()->inset());
1076 #warning FIXME changes
1077                 while (lyx::find::findNextChange(bv_))
1078                         bv_->getLyXText()->acceptChange(bv_->cursor());
1079                 update();
1080                 break;
1081         }
1082
1083         case LFUN_REJECT_ALL_CHANGES: {
1084                 bv_->cursor().reset(bv_->buffer()->inset());
1085 #warning FIXME changes
1086                 while (lyx::find::findNextChange(bv_))
1087                         bv_->getLyXText()->rejectChange(bv_->cursor());
1088                 update();
1089                 break;
1090         }
1091
1092         case LFUN_WORD_FIND:
1093                 lyx::find::find(bv_, cmd);
1094                 break;
1095
1096         case LFUN_WORD_REPLACE:
1097                 lyx::find::replace(bv_, cmd);
1098                 break;
1099
1100         case LFUN_MARK_OFF:
1101                 cur.clearSelection();
1102                 update();
1103                 cur.resetAnchor();
1104                 cur.message(N_("Mark off"));
1105                 break;
1106
1107         case LFUN_MARK_ON:
1108                 cur.clearSelection();
1109                 cur.mark() = true;
1110                 update();
1111                 cur.resetAnchor();
1112                 cur.message(N_("Mark on"));
1113                 break;
1114
1115         case LFUN_SETMARK:
1116                 cur.clearSelection();
1117                 if (cur.mark()) {
1118                         cur.mark() = false;
1119                         cur.message(N_("Mark removed"));
1120                 } else {
1121                         cur.mark() = true;
1122                         cur.message(N_("Mark set"));
1123                 }
1124                 cur.resetAnchor();
1125                 update();
1126                 break;
1127
1128         case LFUN_CENTER:
1129                 bv_->center();
1130                 break;
1131
1132         case LFUN_BEGINNINGBUFSEL:
1133                 bv_->cursor().reset(bv_->buffer()->inset());
1134                 if (!cur.selection())
1135                         cur.resetAnchor();
1136                 bv_->text()->cursorTop(cur);
1137                 finishUndo();
1138                 break;
1139
1140         case LFUN_ENDBUFSEL:
1141                 bv_->cursor().reset(bv_->buffer()->inset());
1142                 if (!cur.selection())
1143                         cur.resetAnchor();
1144                 bv_->text()->cursorBottom(cur);
1145                 finishUndo();
1146                 break;
1147
1148         default:
1149                 return false;
1150         }
1151
1152         return true;
1153 }