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