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