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 bool BufferView::Pimpl::fitCursor()
 359 {
 360         // this is enough to get the right y cursor info for fitCursor
 361         cursor_.top().text()->redoParagraph(cursor_.top().par());
 362
 363         if (!screen().fitCursor(bv_))
 364                 return false;
 365
 366         updateScrollbar();
 367         return true;
 368 }
 369
 370
 371 void BufferView::Pimpl::redoCurrentBuffer()
 372 {
 373         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 374         if (buffer_ && bv_->text()) {
 375                 resizeCurrentBuffer();
 376                 updateScrollbar();
 377                 owner_->updateLayoutChoice();
 378         }
 379 }
 380
 381
 382 void BufferView::Pimpl::resizeCurrentBuffer()
 383 {
 384         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 385         owner_->busy(true);
 386         owner_->message(_("Formatting document..."));
 387
 388         LyXText * text = bv_->text();
 389         if (!text)
 390                 return;
 391
 392         text->init(bv_);
 393         update();
 394         fitCursor();
 395
 396         switchKeyMap();
 397         owner_->busy(false);
 398
 399         // reset the "Formatting..." message
 400         owner_->clearMessage();
 401
 402         updateScrollbar();
 403 }
 404
 405
 406 void BufferView::Pimpl::updateScrollbar()
 407 {
 408         if (!bv_->text()) {
 409                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 410                 lyxerr << "no text in updateScrollbar" << endl;
 411                 workarea().setScrollbarParams(0, 0, 0);
 412                 return;
 413         }
 414
 415         LyXText const & t = *bv_->text();
 416
 417         lyxerr[Debug::GUI]
 418                 << "Updating scrollbar: height: " << t.height()
 419                 << " top_y: " << top_y()
 420                 << " default height " << defaultRowHeight() << endl;
 421
 422         workarea().setScrollbarParams(t.height(), top_y(), defaultRowHeight());
 423 }
 424
 425
 426 void BufferView::Pimpl::scrollDocView(int value)
 427 {
 428         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 429
 430         if (!buffer_)
 431                 return;
 432
 433         screen().hideCursor();
 434
 435         top_y(value);
 436         screen().redraw(*bv_);
 437
 438         if (!lyxrc.cursor_follows_scrollbar)
 439                 return;
 440
 441         int const height = defaultRowHeight();
 442         int const first = top_y() + height;
 443         int const last = top_y() + workarea().workHeight() - height;
 444
 445         bv_->cursor().reset(bv_->buffer()->inset());
 446         LyXText * text = bv_->text();
 447         int y = text->cursorY(bv_->cursor().front());
 448         if (y < first)
 449                 y = first;
 450         if (y > last)
 451                 y = last;
 452         text->setCursorFromCoordinates(bv_->cursor(), 0, y);
 453
 454         owner_->updateLayoutChoice();
 455 }
 456
 457
 458 void BufferView::Pimpl::scroll(int lines)
 459 {
 460         if (!buffer_)
 461                 return;
 462
 463         LyXText const * t = bv_->text();
 464         int const line_height = defaultRowHeight();
 465
 466         // The new absolute coordinate
 467         int new_top_y = top_y() + lines * line_height;
 468
 469         // Restrict to a valid value
 470         new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
 471         new_top_y = std::max(0, new_top_y);
 472
 473         scrollDocView(new_top_y);
 474
 475         // Update the scrollbar.
 476         workarea().setScrollbarParams(t->height(), top_y(), defaultRowHeight());
 477 }
 478
 479
 480 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 481                                          key_modifier::state state)
 482 {
 483         bv_->owner()->getLyXFunc().processKeySym(key, state);
 484
 485         /* This is perhaps a bit of a hack. When we move
 486          * around, or type, it's nice to be able to see
 487          * the cursor immediately after the keypress. So
 488          * we reset the toggle timeout and force the visibility
 489          * of the cursor. Note we cannot do this inside
 490          * dispatch() itself, because that's called recursively.
 491          */
 492         if (available()) {
 493                 cursor_timeout.restart();
 494                 screen().showCursor(*bv_);
 495         }
 496 }
 497
 498
 499 void BufferView::Pimpl::selectionRequested()
 500 {
 501         static string sel;
 502
 503         if (!available())
 504                 return;
 505
 506         LCursor & cur = bv_->cursor();
 507
 508         if (!cur.selection()) {
 509                 xsel_cache_.set = false;
 510                 return;
 511         }
 512
 513         if (!xsel_cache_.set ||
 514             cur.back() != xsel_cache_.cursor ||
 515             cur.anchor_.back() != xsel_cache_.anchor)
 516         {
 517                 xsel_cache_.cursor = cur.back();
 518                 xsel_cache_.anchor = cur.anchor_.back();
 519                 xsel_cache_.set = cur.selection();
 520                 sel = cur.selectionAsString(false);
 521                 if (!sel.empty())
 522                         workarea().putClipboard(sel);
 523         }
 524 }
 525
 526
 527 void BufferView::Pimpl::selectionLost()
 528 {
 529         if (available()) {
 530                 screen().hideCursor();
 531                 bv_->cursor().clearSelection();
 532                 xsel_cache_.set = false;
 533         }
 534 }
 535
 536
 537 void BufferView::Pimpl::workAreaResize()
 538 {
 539         static int work_area_width;
 540         static int work_area_height;
 541
 542         bool const widthChange = workarea().workWidth() != work_area_width;
 543         bool const heightChange = workarea().workHeight() != work_area_height;
 544
 545         // update from work area
 546         work_area_width = workarea().workWidth();
 547         work_area_height = workarea().workHeight();
 548
 549         if (buffer_ && widthChange) {
 550                 // The visible LyXView need a resize
 551                 resizeCurrentBuffer();
 552         }
 553
 554         if (widthChange || heightChange)
 555                 update();
 556
 557         // always make sure that the scrollbar is sane.
 558         updateScrollbar();
 559         owner_->updateLayoutChoice();
 560 }
 561
 562
 563 void BufferView::Pimpl::update()
 564 {
 565         //lyxerr << "BufferView::Pimpl::update(), buffer: " << buffer_ << endl;
 566         // fix cursor coordinate cache in case something went wrong
 567
 568         // check needed to survive LyX startup
 569         if (buffer_) {
 570                 // update all 'visible' paragraphs
 571                 lyx::par_type beg, end;
 572                 getParsInRange(buffer_->paragraphs(),
 573                                top_y(), top_y() + workarea().workHeight(),
 574                                beg, end);
 575                 bv_->text()->redoParagraphs(beg, end);
 576                 updateScrollbar();
 577         }
 578         screen().redraw(*bv_);
 579         bv_->owner()->view_state_changed();
 580 }
 581
 582
 583 // Callback for cursor timer
 584 void BufferView::Pimpl::cursorToggle()
 585 {
 586         if (buffer_) {
 587                 screen().toggleCursor(*bv_);
 588
 589                 // Use this opportunity to deal with any child processes that
 590                 // have finished but are waiting to communicate this fact
 591                 // to the rest of LyX.
 592                 ForkedcallsController & fcc = ForkedcallsController::get();
 593                 if (fcc.processesCompleted())
 594                         fcc.handleCompletedProcesses();
 595         }
 596
 597         cursor_timeout.restart();
 598 }
 599
 600
 601 bool BufferView::Pimpl::available() const
 602 {
 603         return buffer_ && bv_->text();
 604 }
 605
 606
 607 Change const BufferView::Pimpl::getCurrentChange()
 608 {
 609         if (!bv_->buffer()->params().tracking_changes)
 610                 return Change(Change::UNCHANGED);
 611
 612         LyXText * text = bv_->getLyXText();
 613         LCursor & cur = bv_->cursor();
 614
 615         if (!cur.selection())
 616                 return Change(Change::UNCHANGED);
 617
 618         return text->getPar(cur.selBegin().par()).
 619                         lookupChangeFull(cur.selBegin().pos());
 620 }
 621
 622
 623 void BufferView::Pimpl::savePosition(unsigned int i)
 624 {
 625         if (i >= saved_positions_num)
 626                 return;
 627         BOOST_ASSERT(bv_->cursor().inTexted());
 628         saved_positions[i] = Position(buffer_->fileName(),
 629                                       bv_->cursor().paragraph().id(),
 630                                       bv_->cursor().pos());
 631         if (i > 0)
 632                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 633 }
 634
 635
 636 void BufferView::Pimpl::restorePosition(unsigned int i)
 637 {
 638         if (i >= saved_positions_num)
 639                 return;
 640
 641         string const fname = saved_positions[i].filename;
 642
 643         bv_->cursor().clearSelection();
 644
 645         if (fname != buffer_->fileName()) {
 646                 Buffer * b = 0;
 647                 if (bufferlist.exists(fname))
 648                         b = bufferlist.getBuffer(fname);
 649                 else {
 650                         b = bufferlist.newBuffer(fname);
 651                         ::loadLyXFile(b, fname); // don't ask, just load it
 652                 }
 653                 if (b)
 654                         setBuffer(b);
 655         }
 656
 657         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 658         if (par == buffer_->par_iterator_end())
 659                 return;
 660
 661         bv_->text()->setCursor(bv_->cursor(), par.pit(),
 662                 min(par->size(), saved_positions[i].par_pos));
 663
 664         if (i > 0)
 665                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 666 }
 667
 668
 669 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 670 {
 671         return i < saved_positions_num && !saved_positions[i].filename.empty();
 672 }
 673
 674
 675 void BufferView::Pimpl::switchKeyMap()
 676 {
 677         if (!lyxrc.rtl_support)
 678                 return;
 679
 680         Intl & intl = owner_->getIntl();
 681         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 682                 if (intl.keymap == Intl::PRIMARY)
 683                         intl.KeyMapSec();
 684         } else {
 685                 if (intl.keymap == Intl::SECONDARY)
 686                         intl.KeyMapPrim();
 687         }
 688 }
 689
 690
 691 void BufferView::Pimpl::center()
 692 {
 693         LyXText * text = bv_->text();
 694
 695         bv_->cursor().clearSelection();
 696         int const half_height = workarea().workHeight() / 2;
 697         int new_y = text->cursorY(bv_->cursor().front()) - half_height;
 698         if (new_y < 0)
 699                 new_y = 0;
 700
 701         // FIXME: look at this comment again ...
 702         // This updates top_y() but means the fitCursor() call
 703         // from the update(FITCUR) doesn't realise that we might
 704         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 705         // the scrollbar to be updated as it should, so we have
 706         // to do it manually. Any operation that does a center()
 707         // and also might have moved top_y() must make sure to call
 708         // updateScrollbar() currently. Never mind that this is a
 709         // pretty obfuscated way of updating text->top_y()
 710         top_y(new_y);
 711 }
 712
 713
 714 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 715 {
 716         workarea().putClipboard(stuff);
 717 }
 718
 719
 720 InsetBase * BufferView::Pimpl::getInsetByCode(InsetBase::Code /*code*/)
 721 {
 722 #warning Does not work for mathed
 723         // Ok, this is a little bit too brute force but it
 724         // should work for now. Better infrastructure is coming. (Lgb)
 725
 726 #warning FIXME
 727 #if 0
 728         Buffer * buf = bv_->buffer();
 729         InsetIterator beg = inset_iterator_begin(buf->inset());
 730
 731         bool cursor_par_seen = false;
 732
 733         LCursor & cur = bv_->cursor();
 734         LyXText * = bv_->getLyXText();
 735         ParagraphList::iterator pit = text->getPar(cur.par());
 736
 737         for (; beg; ++beg) {
 738                 if (beg.par() == pit)
 739                         cursor_par_seen = true;
 740                 if (cursor_par_seen) {
 741                         if (beg.par() == pit && beg.pos() >= cur.pos())
 742                                 break;
 743                         if (beg.getPar() != pit)
 744                                 break;
 745                 }
 746         }
 747         if (beg) {
 748                 // Now find the first inset that matches code.
 749                 for (; beg; ++beg) {
 750                         if (beg->lyxCode() == code)
 751                                 return &(*beg);
 752                 }
 753         }
 754 #endif
 755         return 0;
 756 }
 757
 758
 759 void BufferView::Pimpl::MenuInsertLyXFile(string const & filenm)
 760 {
 761         string filename = filenm;
 762
 763         if (filename.empty()) {
 764                 // Launch a file browser
 765                 string initpath = lyxrc.document_path;
 766
 767                 if (available()) {
 768                         string const trypath = owner_->buffer()->filePath();
 769                         // If directory is writeable, use this as default.
 770                         if (IsDirWriteable(trypath))
 771                                 initpath = trypath;
 772                 }
 773
 774                 FileDialog fileDlg(_("Select LyX document to insert"),
 775                         LFUN_FILE_INSERT,
 776                         make_pair(string(_("Documents|#o#O")),
 777                                   string(lyxrc.document_path)),
 778                         make_pair(string(_("Examples|#E#e")),
 779                                   string(AddPath(system_lyxdir(), "examples"))));
 780
 781                 FileDialog::Result result =
 782                         fileDlg.open(initpath,
 783                                      FileFilterList(_("LyX Documents (*.lyx)")),
 784                                      string());
 785
 786                 if (result.first == FileDialog::Later)
 787                         return;
 788
 789                 filename = result.second;
 790
 791                 // check selected filename
 792                 if (filename.empty()) {
 793                         owner_->message(_("Canceled."));
 794                         return;
 795                 }
 796         }
 797
 798         // get absolute path of file and add ".lyx" to the filename if
 799         // necessary
 800         filename = FileSearch(string(), filename, "lyx");
 801
 802         string const disp_fn = MakeDisplayPath(filename);
 803         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 804         if (bv_->insertLyXFile(filename))
 805                 owner_->message(bformat(_("Document %1$s inserted."),
 806                                         disp_fn));
 807         else
 808                 owner_->message(bformat(_("Could not insert document %1$s"),
 809                                         disp_fn));
 810 }
 811
 812
 813 void BufferView::Pimpl::trackChanges()
 814 {
 815         Buffer * buf = bv_->buffer();
 816         bool const tracking = buf->params().tracking_changes;
 817
 818         if (!tracking) {
 819                 ParIterator const end = buf->par_iterator_end();
 820                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 821                         it->trackChanges();
 822                 buf->params().tracking_changes = true;
 823
 824                 // we cannot allow undos beyond the freeze point
 825                 buf->undostack().clear();
 826         } else {
 827                 update();
 828                 bv_->text()->setCursor(bv_->cursor(), 0, 0);
 829 #warning changes FIXME
 830                 bool found = lyx::find::findNextChange(bv_);
 831                 if (found) {
 832                         owner_->getDialogs().show("changes");
 833                         return;
 834                 }
 835
 836                 ParIterator const end = buf->par_iterator_end();
 837                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 838                         it->untrackChanges();
 839                 buf->params().tracking_changes = false;
 840         }
 841
 842         buf->redostack().clear();
 843 }
 844
 845
 846 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd0)
 847 {
 848         // this is only called for mouse related events including
 849         // LFUN_FILE_OPEN generated by drag-and-drop.
 850         FuncRequest cmd = cmd0;
 851
 852         // handle drag&deop
 853         if (cmd.action == LFUN_FILE_OPEN) {
 854                 owner_->dispatch(cmd);
 855                 return true;
 856         }
 857
 858         cmd.y += bv_->top_y();
 859         //lyxerr << "*** workAreaDispatch: request: " << cmd << std::endl;
 860         LCursor cur(*bv_);
 861         cur.push(bv_->buffer()->inset());
 862         cur.resetAnchor();
 863         cur.selection() = bv_->cursor().selection();
 864
 865         // Doesn't go through lyxfunc, so we need to update
 866         // the layout choice etc. ourselves
 867
 868         // e.g. Qt mouse press when no buffer
 869         if (!available())
 870                 return false;
 871
 872         screen().hideCursor();
 873
 874         // either the inset under the cursor or the
 875         // surrounding LyXText will handle this event.
 876
 877         // built temporary path to inset
 878         InsetBase * inset = bv_->text()->editXY(cur, cmd.x, cmd.y);
 879         lyxerr << "hit inset at tip: " << inset << endl;
 880         lyxerr << "created temp cursor:\n" << cur << endl;
 881
 882         // Try to dispatch to an non-editable inset near this position
 883         // via the temp cursor. If the inset wishes to change the real
 884         // cursor it has to do so explicitly by using
 885         //  cur.bv().cursor() = cur;  (or similar)'
 886         DispatchResult res;
 887         if (inset)
 888                 inset->dispatch(cur, cmd);
 889
 890         // Now dispatch to the real cursor. Any change to the cursor
 891         // is immediate.
 892         if (!res.dispatched())
 893                 res = cur.dispatch(cmd);
 894
 895         // If the request was dispatched the temp cursor should have been
 896         // in a way to be used as new 'real' cursor.
 897         if (res.dispatched()) {
 898                 bv_->cursor() = cur;
 899                 // Redraw if requested or necessary.
 900                 if (fitCursor() || res.update())
 901                         update();
 902         }
 903
 904         // see workAreaKeyPress
 905         cursor_timeout.restart();
 906         screen().showCursor(*bv_);
 907
 908         // skip these when selecting
 909         if (cmd.action != LFUN_MOUSE_MOTION) {
 910                 owner_->updateLayoutChoice();
 911                 owner_->updateToolbar();
 912         }
 913
 914         // slight hack: this is only called currently when we
 915         // clicked somewhere, so we force through the display
 916         // of the new status here.
 917         owner_->clearMessage();
 918         return true;
 919 }
 920
 921
 922 FuncStatus BufferView::Pimpl::getStatus(FuncRequest const & cmd)
 923 {
 924         Buffer * buf = bv_->buffer();
 925
 926         FuncStatus flag;
 927
 928         switch (cmd.action) {
 929
 930         case LFUN_UNDO:
 931                 flag.enabled(!buf->undostack().empty());
 932                 break;
 933         case LFUN_REDO:
 934                 flag.enabled(!buf->redostack().empty());
 935                 break;
 936         case LFUN_FILE_INSERT:
 937         case LFUN_FILE_INSERT_ASCII_PARA:
 938         case LFUN_FILE_INSERT_ASCII:
 939         case LFUN_FONT_STATE:
 940         case LFUN_INSERT_LABEL:
 941         case LFUN_BOOKMARK_SAVE:
 942         case LFUN_REF_GOTO:
 943         case LFUN_WORD_FIND:
 944         case LFUN_WORD_REPLACE:
 945         case LFUN_MARK_OFF:
 946         case LFUN_MARK_ON:
 947         case LFUN_SETMARK:
 948         case LFUN_CENTER:
 949         case LFUN_BEGINNINGBUFSEL:
 950         case LFUN_ENDBUFSEL:
 951                 flag.enabled(true);
 952                 break;
 953         case LFUN_BOOKMARK_GOTO:
 954                 flag.enabled(bv_->isSavedPosition(strToUnsignedInt(cmd.argument)));
 955                 break;
 956         case LFUN_TRACK_CHANGES:
 957                 flag.enabled(true);
 958                 flag.setOnOff(buf->params().tracking_changes);
 959                 break;
 960
 961         case LFUN_MERGE_CHANGES:
 962         case LFUN_ACCEPT_CHANGE: // what about these two
 963         case LFUN_REJECT_CHANGE: // what about these two
 964         case LFUN_ACCEPT_ALL_CHANGES:
 965         case LFUN_REJECT_ALL_CHANGES:
 966                 flag.enabled(buf && buf->params().tracking_changes);
 967                 break;
 968         default:
 969                 flag.enabled(false);
 970         }
 971
 972         return flag;
 973 }
 974
 975
 976
 977 bool BufferView::Pimpl::dispatch(FuncRequest const & cmd)
 978 {
 979         //lyxerr << "BufferView::Pimpl::dispatch  cmd: " << cmd << std::endl;
 980         // Make sure that the cached BufferView is correct.
 981         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
 982                 << " action[" << cmd.action << ']'
 983                 << " arg[" << cmd.argument << ']'
 984                 << " x[" << cmd.x << ']'
 985                 << " y[" << cmd.y << ']'
 986                 << " button[" << cmd.button() << ']'
 987                 << endl;
 988
 989         LCursor & cur = bv_->cursor();
 990
 991         switch (cmd.action) {
 992
 993         case LFUN_UNDO:
 994                 if (available()) {
 995                         cur.message(_("Undo"));
 996                         cur.clearSelection();
 997                         if (!textUndo(*bv_))
 998                                 cur.message(_("No further undo information"));
 999                         update();
1000                         switchKeyMap();
1001                 }
1002                 break;
1003
1004         case LFUN_REDO:
1005                 if (available()) {
1006                         cur.message(_("Redo"));
1007                         cur.clearSelection();
1008                         if (!textRedo(*bv_))
1009                                 cur.message(_("No further redo information"));
1010                         update();
1011                         switchKeyMap();
1012                 }
1013                 break;
1014
1015         case LFUN_FILE_INSERT:
1016                 MenuInsertLyXFile(cmd.argument);
1017                 break;
1018
1019         case LFUN_FILE_INSERT_ASCII_PARA:
1020                 InsertAsciiFile(bv_, cmd.argument, true);
1021                 break;
1022
1023         case LFUN_FILE_INSERT_ASCII:
1024                 InsertAsciiFile(bv_, cmd.argument, false);
1025                 break;
1026
1027         case LFUN_FONT_STATE:
1028                 cur.message(cur.currentState());
1029                 break;
1030
1031         case LFUN_INSERT_LABEL: {
1032                 // Try and generate a valid label
1033                 string const contents = cmd.argument.empty() ?
1034                         cur.getPossibleLabel() : cmd.argument;
1035                 InsetCommandParams icp("label", contents);
1036                 string data = InsetCommandMailer::params2string("label", icp);
1037                 owner_->getDialogs().show("label", data, 0);
1038                 break;
1039         }
1040
1041         case LFUN_BOOKMARK_SAVE:
1042                 savePosition(strToUnsignedInt(cmd.argument));
1043                 break;
1044
1045         case LFUN_BOOKMARK_GOTO:
1046                 restorePosition(strToUnsignedInt(cmd.argument));
1047                 break;
1048
1049         case LFUN_REF_GOTO: {
1050                 string label = cmd.argument;
1051                 if (label.empty()) {
1052                         InsetRef * inset =
1053                                 static_cast<InsetRef*>(getInsetByCode(InsetBase::REF_CODE));
1054                         if (inset) {
1055                                 label = inset->getContents();
1056                                 savePosition(0);
1057                         }
1058                 }
1059
1060                 if (!label.empty())
1061                         bv_->gotoLabel(label);
1062                 break;
1063         }
1064
1065         case LFUN_TRACK_CHANGES:
1066                 trackChanges();
1067                 break;
1068
1069         case LFUN_MERGE_CHANGES:
1070                 owner_->getDialogs().show("changes");
1071                 break;
1072
1073         case LFUN_ACCEPT_ALL_CHANGES: {
1074                 bv_->cursor().reset(bv_->buffer()->inset());
1075 #warning FIXME changes
1076                 while (lyx::find::findNextChange(bv_))
1077                         bv_->getLyXText()->acceptChange(bv_->cursor());
1078                 update();
1079                 break;
1080         }
1081
1082         case LFUN_REJECT_ALL_CHANGES: {
1083                 bv_->cursor().reset(bv_->buffer()->inset());
1084 #warning FIXME changes
1085                 while (lyx::find::findNextChange(bv_))
1086                         bv_->getLyXText()->rejectChange(bv_->cursor());
1087                 update();
1088                 break;
1089         }
1090
1091         case LFUN_WORD_FIND:
1092                 lyx::find::find(bv_, cmd);
1093                 break;
1094
1095         case LFUN_WORD_REPLACE:
1096                 lyx::find::replace(bv_, cmd);
1097                 break;
1098
1099         case LFUN_MARK_OFF:
1100                 cur.clearSelection();
1101                 update();
1102                 cur.resetAnchor();
1103                 cur.message(N_("Mark off"));
1104                 break;
1105
1106         case LFUN_MARK_ON:
1107                 cur.clearSelection();
1108                 cur.mark() = true;
1109                 update();
1110                 cur.resetAnchor();
1111                 cur.message(N_("Mark on"));
1112                 break;
1113
1114         case LFUN_SETMARK:
1115                 cur.clearSelection();
1116                 if (cur.mark()) {
1117                         cur.mark() = false;
1118                         cur.message(N_("Mark removed"));
1119                 } else {
1120                         cur.mark() = true;
1121                         cur.message(N_("Mark set"));
1122                 }
1123                 cur.resetAnchor();
1124                 update();
1125                 break;
1126
1127         case LFUN_CENTER:
1128                 bv_->center();
1129                 break;
1130
1131         case LFUN_BEGINNINGBUFSEL:
1132                 bv_->cursor().reset(bv_->buffer()->inset());
1133                 if (!cur.selection())
1134                         cur.resetAnchor();
1135                 bv_->text()->cursorTop(cur);
1136                 finishUndo();
1137                 break;
1138
1139         case LFUN_ENDBUFSEL:
1140                 bv_->cursor().reset(bv_->buffer()->inset());
1141                 if (!cur.selection())
1142                         cur.resetAnchor();
1143                 bv_->text()->cursorBottom(cur);
1144                 finishUndo();
1145                 break;
1146
1147         default:
1148                 return false;
1149         }
1150
1151         return true;
1152 }