src/BufferView_pimpl.C

   1 /**
   2  * \file BufferView_pimpl.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Asger Alstrup
   7  * \author Alfredo Braunstein
   8  * \author Lars Gullik Bjønnes
   9  * \author Jean-Marc Lasgouttes
  10  * \author Angus Leeming
  11  * \author John Levon
  12  * \author André Pönitz
  13  * \author Dekel Tsur
  14  * \author Jürgen Vigna
  15  *
  16  * Full author contact details are available in file CREDITS.
  17  */
  18
  19 #include <config.h>
  20
  21 #include "BufferView_pimpl.h"
  22 #include "buffer.h"
  23 #include "buffer_funcs.h"
  24 #include "bufferlist.h"
  25 #include "bufferparams.h"
  26 #include "cursor.h"
  27 #include "debug.h"
  28 #include "dispatchresult.h"
  29 #include "factory.h"
  30 #include "FloatList.h"
  31 #include "funcrequest.h"
  32 #include "FuncStatus.h"
  33 #include "gettext.h"
  34 #include "intl.h"
  35 #include "insetiterator.h"
  36 #include "lyx_cb.h" // added for Dispatch functions
  37 #include "lyx_main.h"
  38 #include "lyxfind.h"
  39 #include "lyxfunc.h"
  40 #include "lyxtext.h"
  41 #include "lyxrc.h"
  42 #include "lastfiles.h"
  43 #include "paragraph.h"
  44 #include "paragraph_funcs.h"
  45 #include "ParagraphParameters.h"
  46 #include "pariterator.h"
  47 #include "undo.h"
  48 #include "vspace.h"
  49
  50 #include "insets/insetref.h"
  51 #include "insets/insettext.h"
  52
  53 #include "frontends/Alert.h"
  54 #include "frontends/Dialogs.h"
  55 #include "frontends/FileDialog.h"
  56 #include "frontends/LyXView.h"
  57 #include "frontends/LyXScreenFactory.h"
  58 #include "frontends/screen.h"
  59 #include "frontends/WorkArea.h"
  60 #include "frontends/WorkAreaFactory.h"
  61
  62 #include "graphics/Previews.h"
  63
  64 #include "support/filetools.h"
  65 #include "support/forkedcontr.h"
  66 #include "support/globbing.h"
  67 #include "support/path_defines.h"
  68 #include "support/tostr.h"
  69
  70 #include <boost/bind.hpp>
  71
  72 using lyx::pos_type;
  73
  74 using lyx::support::AddPath;
  75 using lyx::support::bformat;
  76 using lyx::support::FileFilterList;
  77 using lyx::support::FileSearch;
  78 using lyx::support::ForkedcallsController;
  79 using lyx::support::IsDirWriteable;
  80 using lyx::support::MakeDisplayPath;
  81 using lyx::support::strToUnsignedInt;
  82 using lyx::support::system_lyxdir;
  83
  84 using std::endl;
  85 using std::istringstream;
  86 using std::make_pair;
  87 using std::min;
  88 using std::string;
  89
  90
  91 extern BufferList bufferlist;
  92
  93
  94 namespace {
  95
  96 unsigned int const saved_positions_num = 20;
  97
  98 // All the below connection objects are needed because of a bug in some
  99 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
 100 // to these connections we avoid a segfault upon startup, and also at exit.
 101 // (Lgb)
 102
 103 boost::signals::connection dispatchcon;
 104 boost::signals::connection timecon;
 105 boost::signals::connection doccon;
 106 boost::signals::connection resizecon;
 107 boost::signals::connection kpresscon;
 108 boost::signals::connection selectioncon;
 109 boost::signals::connection lostcon;
 110
 111
 112 } // anon namespace
 113
 114
 115 BufferView::Pimpl::Pimpl(BufferView & bv, LyXView * owner,
 116              int xpos, int ypos, int width, int height)
 117         : bv_(&bv), owner_(owner), buffer_(0), cursor_timeout(400),
 118           using_xterm_cursor(false), cursor_(bv)
 119 {
 120         xsel_cache_.set = false;
 121
 122         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 123         screen_.reset(LyXScreenFactory::create(workarea()));
 124
 125         // Setup the signals
 126         doccon = workarea().scrollDocView
 127                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 128         resizecon = workarea().workAreaResize
 129                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 130         dispatchcon = workarea().dispatch
 131                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 132         kpresscon = workarea().workAreaKeyPress
 133                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 134         selectioncon = workarea().selectionRequested
 135                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 136         lostcon = workarea().selectionLost
 137                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 138
 139         timecon = cursor_timeout.timeout
 140                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 141         cursor_timeout.start();
 142         saved_positions.resize(saved_positions_num);
 143 }
 144
 145
 146 void BufferView::Pimpl::addError(ErrorItem const & ei)
 147 {
 148         errorlist_.push_back(ei);
 149 }
 150
 151
 152 void BufferView::Pimpl::showReadonly(bool)
 153 {
 154         owner_->updateWindowTitle();
 155         owner_->getDialogs().updateBufferDependent(false);
 156 }
 157
 158
 159 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 160 {
 161         if (errorConnection_.connected())
 162                 disconnectBuffer();
 163
 164         errorConnection_ =
 165                 buf.error.connect(
 166                         boost::bind(&BufferView::Pimpl::addError, this, _1));
 167
 168         messageConnection_ =
 169                 buf.message.connect(
 170                         boost::bind(&LyXView::message, owner_, _1));
 171
 172         busyConnection_ =
 173                 buf.busy.connect(
 174                         boost::bind(&LyXView::busy, owner_, _1));
 175
 176         titleConnection_ =
 177                 buf.updateTitles.connect(
 178                         boost::bind(&LyXView::updateWindowTitle, owner_));
 179
 180         timerConnection_ =
 181                 buf.resetAutosaveTimers.connect(
 182                         boost::bind(&LyXView::resetAutosaveTimer, owner_));
 183
 184         readonlyConnection_ =
 185                 buf.readonly.connect(
 186                         boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 187
 188         closingConnection_ =
 189                 buf.closing.connect(
 190                         boost::bind(&BufferView::Pimpl::setBuffer, this, (Buffer *)0));
 191 }
 192
 193
 194 void BufferView::Pimpl::disconnectBuffer()
 195 {
 196         errorConnection_.disconnect();
 197         messageConnection_.disconnect();
 198         busyConnection_.disconnect();
 199         titleConnection_.disconnect();
 200         timerConnection_.disconnect();
 201         readonlyConnection_.disconnect();
 202         closingConnection_.disconnect();
 203 }
 204
 205
 206 void BufferView::Pimpl::newFile(string const & filename, string const & tname,
 207         bool isNamed)
 208 {
 209         setBuffer(::newFile(filename, tname, isNamed));
 210 }
 211
 212
 213 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 214 {
 215         // get absolute path of file and add ".lyx" to the filename if
 216         // necessary
 217         string s = FileSearch(string(), filename, "lyx");
 218
 219         bool const found = !s.empty();
 220
 221         if (!found)
 222                 s = filename;
 223
 224         // file already open?
 225         if (bufferlist.exists(s)) {
 226                 string const file = MakeDisplayPath(s, 20);
 227                 string text = bformat(_("The document %1$s is already "
 228                                         "loaded.\n\nDo you want to revert "
 229                                         "to the saved version?"), file);
 230                 int const ret = Alert::prompt(_("Revert to saved document?"),
 231                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 232
 233                 if (ret != 0) {
 234                         setBuffer(bufferlist.getBuffer(s));
 235                         return true;
 236                 }
 237                 // FIXME: should be LFUN_REVERT
 238                 if (!bufferlist.close(bufferlist.getBuffer(s), false))
 239                         return false;
 240                 // Fall through to new load. (Asger)
 241         }
 242
 243         Buffer * b;
 244
 245         if (found) {
 246                 b = bufferlist.newBuffer(s);
 247                 connectBuffer(*b);
 248                 if (!::loadLyXFile(b, s)) {
 249                         bufferlist.release(b);
 250                         return false;
 251                 }
 252         } else {
 253                 string text = bformat(_("The document %1$s does not yet "
 254                                         "exist.\n\nDo you want to create "
 255                                         "a new document?"), s);
 256                 int const ret = Alert::prompt(_("Create new document?"),
 257                          text, 0, 1, _("&Create"), _("Cancel"));
 258
 259                 if (ret == 0)
 260                         b = ::newFile(s, string(), true);
 261                 else
 262                         return false;
 263         }
 264
 265         setBuffer(b);
 266         bv_->showErrorList(_("Parse"));
 267
 268         if (tolastfiles)
 269                 LyX::ref().lastfiles().newFile(b->fileName());
 270
 271         return true;
 272 }
 273
 274
 275 WorkArea & BufferView::Pimpl::workarea() const
 276 {
 277         return *workarea_.get();
 278 }
 279
 280
 281 LyXScreen & BufferView::Pimpl::screen() const
 282 {
 283         return *screen_.get();
 284 }
 285
 286
 287 Painter & BufferView::Pimpl::painter() const
 288 {
 289         return workarea().getPainter();
 290 }
 291
 292
 293 void BufferView::Pimpl::top_y(int y)
 294 {
 295         top_y_ = y;
 296 }
 297
 298
 299 int BufferView::Pimpl::top_y() const
 300 {
 301         return top_y_;
 302 }
 303
 304
 305 void BufferView::Pimpl::setBuffer(Buffer * b)
 306 {
 307         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 308                             << b << ')' << endl;
 309         if (buffer_)
 310                 disconnectBuffer();
 311
 312         // set current buffer
 313         buffer_ = b;
 314
 315         // reset old cursor
 316         top_y_ = 0;
 317         cursor_ = LCursor(*bv_);
 318
 319         // if we're quitting lyx, don't bother updating stuff
 320         if (quitting)
 321                 return;
 322
 323         if (buffer_) {
 324                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 325                 connectBuffer(*buffer_);
 326
 327                 cursor_.push(buffer_->inset());
 328                 cursor_.resetAnchor();
 329                 buffer_->text().init(bv_);
 330
 331                 // If we don't have a text object for this, we make one
 332                 //if (bv_->text() == 0)
 333                 //      resizeCurrentBuffer();
 334
 335                 // Buffer-dependent dialogs should be updated or
 336                 // hidden. This should go here because some dialogs (eg ToC)
 337                 // require bv_->text.
 338                 owner_->getDialogs().updateBufferDependent(true);
 339                 owner_->setLayout(bv_->text()->getPar(0).layout()->name());
 340         } else {
 341                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 342                 // we are closing the buffer, use the first buffer as current
 343                 buffer_ = bufferlist.first();
 344                 owner_->getDialogs().hideBufferDependent();
 345         }
 346
 347         update();
 348         updateScrollbar();
 349         owner_->updateMenubar();
 350         owner_->updateToolbar();
 351         owner_->updateLayoutChoice();
 352         owner_->updateWindowTitle();
 353
 354         if (lyx::graphics::Previews::activated() && buffer_)
 355                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 356 }
 357
 358
 359 bool BufferView::Pimpl::fitCursor()
 360 {
 361         if (!screen().fitCursor(bv_))
 362                 return false;
 363         updateScrollbar();
 364         return true;
 365 }
 366
 367
 368 void BufferView::Pimpl::redoCurrentBuffer()
 369 {
 370         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 371         if (buffer_ && bv_->text()) {
 372                 resizeCurrentBuffer();
 373                 updateScrollbar();
 374                 owner_->updateLayoutChoice();
 375         }
 376 }
 377
 378
 379 void BufferView::Pimpl::resizeCurrentBuffer()
 380 {
 381         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 382         owner_->busy(true);
 383         owner_->message(_("Formatting document..."));
 384
 385         LyXText * text = bv_->text();
 386         if (!text)
 387                 return;
 388
 389         text->init(bv_);
 390         update();
 391         bv_->cursor().updatePos();
 392         fitCursor();
 393
 394         switchKeyMap();
 395         owner_->busy(false);
 396
 397         // reset the "Formatting..." message
 398         owner_->clearMessage();
 399
 400         updateScrollbar();
 401 }
 402
 403
 404 void BufferView::Pimpl::updateScrollbar()
 405 {
 406         if (!bv_->text()) {
 407                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 408                 lyxerr << "no text in updateScrollbar" << endl;
 409                 workarea().setScrollbarParams(0, 0, 0);
 410                 return;
 411         }
 412
 413         LyXText const & t = *bv_->text();
 414
 415         lyxerr[Debug::GUI]
 416                 << "Updating scrollbar: height: " << t.height()
 417                 << " top_y: " << top_y()
 418                 << " default height " << defaultRowHeight() << endl;
 419
 420         workarea().setScrollbarParams(t.height(), top_y(), defaultRowHeight());
 421 }
 422
 423
 424 void BufferView::Pimpl::scrollDocView(int value)
 425 {
 426         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 427
 428         if (!buffer_)
 429                 return;
 430
 431         screen().hideCursor();
 432
 433         top_y(value);
 434         screen().redraw(*bv_);
 435
 436         if (!lyxrc.cursor_follows_scrollbar)
 437                 return;
 438
 439         int const height = defaultRowHeight();
 440         int const first = top_y() + height;
 441         int const last = top_y() + workarea().workHeight() - height;
 442
 443         bv_->cursor().reset(bv_->buffer()->inset());
 444         LyXText * text = bv_->text();
 445         int y = text->cursorY(bv_->cursor().front());
 446         if (y < first)
 447                 y = first;
 448         if (y > last)
 449                 y = last;
 450         text->setCursorFromCoordinates(bv_->cursor(), 0, y);
 451
 452         owner_->updateLayoutChoice();
 453 }
 454
 455
 456 void BufferView::Pimpl::scroll(int lines)
 457 {
 458         if (!buffer_)
 459                 return;
 460
 461         LyXText const * t = bv_->text();
 462         int const line_height = defaultRowHeight();
 463
 464         // The new absolute coordinate
 465         int new_top_y = top_y() + lines * line_height;
 466
 467         // Restrict to a valid value
 468         new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
 469         new_top_y = std::max(0, new_top_y);
 470
 471         scrollDocView(new_top_y);
 472
 473         // Update the scrollbar.
 474         workarea().setScrollbarParams(t->height(), top_y(), defaultRowHeight());
 475 }
 476
 477
 478 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 479                                          key_modifier::state state)
 480 {
 481         bv_->owner()->getLyXFunc().processKeySym(key, state);
 482
 483         /* This is perhaps a bit of a hack. When we move
 484          * around, or type, it's nice to be able to see
 485          * the cursor immediately after the keypress. So
 486          * we reset the toggle timeout and force the visibility
 487          * of the cursor. Note we cannot do this inside
 488          * dispatch() itself, because that's called recursively.
 489          */
 490         if (available()) {
 491                 cursor_timeout.restart();
 492                 screen().showCursor(*bv_);
 493         }
 494 }
 495
 496
 497 void BufferView::Pimpl::selectionRequested()
 498 {
 499         static string sel;
 500
 501         if (!available())
 502                 return;
 503
 504         LCursor & cur = bv_->cursor();
 505
 506         if (!cur.selection()) {
 507                 xsel_cache_.set = false;
 508                 return;
 509         }
 510
 511         if (!xsel_cache_.set ||
 512             cur.back() != xsel_cache_.cursor ||
 513             cur.anchor_.back() != xsel_cache_.anchor)
 514         {
 515                 xsel_cache_.cursor = cur.back();
 516                 xsel_cache_.anchor = cur.anchor_.back();
 517                 xsel_cache_.set = cur.selection();
 518                 sel = cur.selectionAsString(false);
 519                 if (!sel.empty())
 520                         workarea().putClipboard(sel);
 521         }
 522 }
 523
 524
 525 void BufferView::Pimpl::selectionLost()
 526 {
 527         if (available()) {
 528                 screen().hideCursor();
 529                 bv_->cursor().clearSelection();
 530                 xsel_cache_.set = false;
 531         }
 532 }
 533
 534
 535 void BufferView::Pimpl::workAreaResize()
 536 {
 537         static int work_area_width;
 538         static int work_area_height;
 539
 540         bool const widthChange = workarea().workWidth() != work_area_width;
 541         bool const heightChange = workarea().workHeight() != work_area_height;
 542
 543         // update from work area
 544         work_area_width = workarea().workWidth();
 545         work_area_height = workarea().workHeight();
 546
 547         if (buffer_ && widthChange) {
 548                 // The visible LyXView need a resize
 549                 resizeCurrentBuffer();
 550         }
 551
 552         if (widthChange || heightChange)
 553                 update();
 554
 555         // always make sure that the scrollbar is sane.
 556         updateScrollbar();
 557         owner_->updateLayoutChoice();
 558 }
 559
 560
 561 void BufferView::Pimpl::update()
 562 {
 563         //lyxerr << "BufferView::Pimpl::update(), buffer: " << buffer_ << endl;
 564         // fix cursor coordinate cache in case something went wrong
 565
 566         // check needed to survive LyX startup
 567         if (buffer_) {
 568                 // update all 'visible' paragraphs
 569                 lyx::par_type beg, end;
 570                 getParsInRange(buffer_->paragraphs(),
 571                                top_y(), top_y() + workarea().workHeight(),
 572                                beg, end);
 573                 bv_->text()->redoParagraphs(beg, end);
 574                 updateScrollbar();
 575         }
 576         screen().redraw(*bv_);
 577         bv_->owner()->view_state_changed();
 578 }
 579
 580
 581 // Callback for cursor timer
 582 void BufferView::Pimpl::cursorToggle()
 583 {
 584         if (buffer_) {
 585                 screen().toggleCursor(*bv_);
 586
 587                 // Use this opportunity to deal with any child processes that
 588                 // have finished but are waiting to communicate this fact
 589                 // to the rest of LyX.
 590                 ForkedcallsController & fcc = ForkedcallsController::get();
 591                 if (fcc.processesCompleted())
 592                         fcc.handleCompletedProcesses();
 593         }
 594
 595         cursor_timeout.restart();
 596 }
 597
 598
 599 bool BufferView::Pimpl::available() const
 600 {
 601         return buffer_ && bv_->text();
 602 }
 603
 604
 605 Change const BufferView::Pimpl::getCurrentChange()
 606 {
 607         if (!bv_->buffer()->params().tracking_changes)
 608                 return Change(Change::UNCHANGED);
 609
 610         LyXText * text = bv_->getLyXText();
 611         LCursor & cur = bv_->cursor();
 612
 613         if (!cur.selection())
 614                 return Change(Change::UNCHANGED);
 615
 616         return text->getPar(cur.selBegin().par()).
 617                         lookupChangeFull(cur.selBegin().pos());
 618 }
 619
 620
 621 void BufferView::Pimpl::savePosition(unsigned int i)
 622 {
 623         if (i >= saved_positions_num)
 624                 return;
 625         BOOST_ASSERT(bv_->cursor().inTexted());
 626         saved_positions[i] = Position(buffer_->fileName(),
 627                                       bv_->cursor().paragraph().id(),
 628                                       bv_->cursor().pos());
 629         if (i > 0)
 630                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 631 }
 632
 633
 634 void BufferView::Pimpl::restorePosition(unsigned int i)
 635 {
 636         if (i >= saved_positions_num)
 637                 return;
 638
 639         string const fname = saved_positions[i].filename;
 640
 641         bv_->cursor().clearSelection();
 642
 643         if (fname != buffer_->fileName()) {
 644                 Buffer * b = 0;
 645                 if (bufferlist.exists(fname))
 646                         b = bufferlist.getBuffer(fname);
 647                 else {
 648                         b = bufferlist.newBuffer(fname);
 649                         ::loadLyXFile(b, fname); // don't ask, just load it
 650                 }
 651                 if (b)
 652                         setBuffer(b);
 653         }
 654
 655         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 656         if (par == buffer_->par_iterator_end())
 657                 return;
 658
 659         bv_->text()->setCursor(bv_->cursor(), par.pit(),
 660                 min(par->size(), saved_positions[i].par_pos));
 661
 662         if (i > 0)
 663                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 664 }
 665
 666
 667 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 668 {
 669         return i < saved_positions_num && !saved_positions[i].filename.empty();
 670 }
 671
 672
 673 void BufferView::Pimpl::switchKeyMap()
 674 {
 675         if (!lyxrc.rtl_support)
 676                 return;
 677
 678         Intl & intl = owner_->getIntl();
 679         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 680                 if (intl.keymap == Intl::PRIMARY)
 681                         intl.KeyMapSec();
 682         } else {
 683                 if (intl.keymap == Intl::SECONDARY)
 684                         intl.KeyMapPrim();
 685         }
 686 }
 687
 688
 689 void BufferView::Pimpl::center()
 690 {
 691         LyXText * text = bv_->text();
 692
 693         bv_->cursor().clearSelection();
 694         int const half_height = workarea().workHeight() / 2;
 695         int new_y = text->cursorY(bv_->cursor().front()) - half_height;
 696         if (new_y < 0)
 697                 new_y = 0;
 698
 699         // FIXME: look at this comment again ...
 700         // This updates top_y() but means the fitCursor() call
 701         // from the update(FITCUR) doesn't realise that we might
 702         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 703         // the scrollbar to be updated as it should, so we have
 704         // to do it manually. Any operation that does a center()
 705         // and also might have moved top_y() must make sure to call
 706         // updateScrollbar() currently. Never mind that this is a
 707         // pretty obfuscated way of updating text->top_y()
 708         top_y(new_y);
 709 }
 710
 711
 712 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 713 {
 714         workarea().putClipboard(stuff);
 715 }
 716
 717
 718 InsetBase * BufferView::Pimpl::getInsetByCode(InsetBase::Code /*code*/)
 719 {
 720 #ifdef WITH_WARNINGS
 721 #warning Does not work for mathed
 722 #endif
 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 #ifdef WITH_WARNINGS
 830 #warning changes FIXME
 831 #endif
 832                 bool found = lyx::find::findNextChange(bv_);
 833                 if (found) {
 834                         owner_->getDialogs().show("changes");
 835                         return;
 836                 }
 837
 838                 ParIterator const end = buf->par_iterator_end();
 839                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 840                         it->untrackChanges();
 841                 buf->params().tracking_changes = false;
 842         }
 843
 844         buf->redostack().clear();
 845 }
 846
 847
 848 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd0)
 849 {
 850         // this is only called for mouse related events including
 851         // LFUN_FILE_OPEN generated by drag-and-drop.
 852         FuncRequest cmd = cmd0;
 853
 854         // handle drag&deop
 855         if (cmd.action == LFUN_FILE_OPEN) {
 856                 owner_->dispatch(cmd);
 857                 return true;
 858         }
 859
 860         cmd.y += bv_->top_y();
 861         //lyxerr << "*** workAreaDispatch: request: " << cmd << std::endl;
 862         LCursor cur(*bv_);
 863         cur.push(bv_->buffer()->inset());
 864         cur.resetAnchor();
 865         cur.selection() = bv_->cursor().selection();
 866
 867         // Doesn't go through lyxfunc, so we need to update
 868         // the layout choice etc. ourselves
 869
 870         // e.g. Qt mouse press when no buffer
 871         if (!available())
 872                 return false;
 873
 874         screen().hideCursor();
 875
 876         // either the inset under the cursor or the
 877         // surrounding LyXText will handle this event.
 878
 879         // built temporary path to inset
 880         InsetBase * inset = bv_->text()->editXY(cur, cmd.x, cmd.y);
 881         lyxerr << "hit inset at tip: " << inset << endl;
 882         lyxerr << "created temp cursor:\n" << cur << endl;
 883
 884         // Try to dispatch to an non-editable inset near this position
 885         // via the temp cursor. If the inset wishes to change the real
 886         // cursor it has to do so explicitly by using
 887         //  cur.bv().cursor() = cur;  (or similar)'
 888         DispatchResult res;
 889         if (inset)
 890                 inset->dispatch(cur, cmd);
 891
 892         // Now dispatch to the real cursor. Any change to the cursor
 893         // is immediate.
 894         if (!res.dispatched())
 895                 res = cur.dispatch(cmd);
 896
 897         // If the request was dispatched the temp cursor should have been
 898         // in a way to be used as new 'real' cursor.
 899         if (res.dispatched())
 900                 bv_->cursor() = cur;
 901
 902         // Redraw if requested or necessary.
 903         if (res.update())
 904                 update();
 905         if (fitCursor())
 906                 update();
 907
 908         // see workAreaKeyPress
 909         cursor_timeout.restart();
 910         screen().showCursor(*bv_);
 911
 912         // skip these when selecting
 913         if (cmd.action != LFUN_MOUSE_MOTION) {
 914                 owner_->updateLayoutChoice();
 915                 owner_->updateToolbar();
 916         }
 917
 918         // slight hack: this is only called currently when we
 919         // clicked somewhere, so we force through the display
 920         // of the new status here.
 921         owner_->clearMessage();
 922         return true;
 923 }
 924
 925
 926 FuncStatus BufferView::Pimpl::getStatus(FuncRequest const & cmd)
 927 {
 928         Buffer * buf = bv_->buffer();
 929
 930         FuncStatus flag;
 931
 932         switch (cmd.action) {
 933
 934         case LFUN_UNDO:
 935                 flag.enabled(!buf->undostack().empty());
 936                 break;
 937         case LFUN_REDO:
 938                 flag.enabled(!buf->redostack().empty());
 939                 break;
 940         case LFUN_FILE_INSERT:
 941         case LFUN_FILE_INSERT_ASCII_PARA:
 942         case LFUN_FILE_INSERT_ASCII:
 943         case LFUN_FONT_STATE:
 944         case LFUN_INSERT_LABEL:
 945         case LFUN_BOOKMARK_SAVE:
 946         case LFUN_REF_GOTO:
 947         case LFUN_WORD_FIND:
 948         case LFUN_WORD_REPLACE:
 949         case LFUN_MARK_OFF:
 950         case LFUN_MARK_ON:
 951         case LFUN_SETMARK:
 952         case LFUN_CENTER:
 953         case LFUN_BEGINNINGBUFSEL:
 954         case LFUN_ENDBUFSEL:
 955                 flag.enabled(true);
 956                 break;
 957         case LFUN_BOOKMARK_GOTO:
 958                 flag.enabled(bv_->isSavedPosition(strToUnsignedInt(cmd.argument)));
 959                 break;
 960         case LFUN_TRACK_CHANGES:
 961                 flag.enabled(true);
 962                 flag.setOnOff(buf->params().tracking_changes);
 963                 break;
 964
 965         case LFUN_MERGE_CHANGES:
 966         case LFUN_ACCEPT_CHANGE: // what about these two
 967         case LFUN_REJECT_CHANGE: // what about these two
 968         case LFUN_ACCEPT_ALL_CHANGES:
 969         case LFUN_REJECT_ALL_CHANGES:
 970                 flag.enabled(buf && buf->params().tracking_changes);
 971                 break;
 972         default:
 973                 flag.enabled(false);
 974         }
 975
 976         return flag;
 977 }
 978
 979
 980
 981 bool BufferView::Pimpl::dispatch(FuncRequest const & cmd)
 982 {
 983         //lyxerr << "BufferView::Pimpl::dispatch  cmd: " << cmd << std::endl;
 984         // Make sure that the cached BufferView is correct.
 985         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
 986                 << " action[" << cmd.action << ']'
 987                 << " arg[" << cmd.argument << ']'
 988                 << " x[" << cmd.x << ']'
 989                 << " y[" << cmd.y << ']'
 990                 << " button[" << cmd.button() << ']'
 991                 << endl;
 992
 993         LCursor & cur = bv_->cursor();
 994
 995         switch (cmd.action) {
 996
 997         case LFUN_UNDO:
 998                 if (available()) {
 999                         cur.message(_("Undo"));
1000                         cur.clearSelection();
1001                         if (!textUndo(*bv_))
1002                                 cur.message(_("No further undo information"));
1003                         update();
1004                         switchKeyMap();
1005                 }
1006                 break;
1007
1008         case LFUN_REDO:
1009                 if (available()) {
1010                         cur.message(_("Redo"));
1011                         cur.clearSelection();
1012                         if (!textRedo(*bv_))
1013                                 cur.message(_("No further redo information"));
1014                         update();
1015                         switchKeyMap();
1016                 }
1017                 break;
1018
1019         case LFUN_FILE_INSERT:
1020                 MenuInsertLyXFile(cmd.argument);
1021                 break;
1022
1023         case LFUN_FILE_INSERT_ASCII_PARA:
1024                 InsertAsciiFile(bv_, cmd.argument, true);
1025                 break;
1026
1027         case LFUN_FILE_INSERT_ASCII:
1028                 InsertAsciiFile(bv_, cmd.argument, false);
1029                 break;
1030
1031         case LFUN_FONT_STATE:
1032                 cur.message(cur.currentState());
1033                 break;
1034
1035         case LFUN_INSERT_LABEL: {
1036                 // Try and generate a valid label
1037                 string const contents = cmd.argument.empty() ?
1038                         cur.getPossibleLabel() : cmd.argument;
1039                 InsetCommandParams icp("label", contents);
1040                 string data = InsetCommandMailer::params2string("label", icp);
1041                 owner_->getDialogs().show("label", data, 0);
1042                 break;
1043         }
1044
1045         case LFUN_BOOKMARK_SAVE:
1046                 savePosition(strToUnsignedInt(cmd.argument));
1047                 break;
1048
1049         case LFUN_BOOKMARK_GOTO:
1050                 restorePosition(strToUnsignedInt(cmd.argument));
1051                 break;
1052
1053         case LFUN_REF_GOTO: {
1054                 string label = cmd.argument;
1055                 if (label.empty()) {
1056                         InsetRef * inset =
1057                                 static_cast<InsetRef*>(getInsetByCode(InsetBase::REF_CODE));
1058                         if (inset) {
1059                                 label = inset->getContents();
1060                                 savePosition(0);
1061                         }
1062                 }
1063
1064                 if (!label.empty())
1065                         bv_->gotoLabel(label);
1066                 break;
1067         }
1068
1069         case LFUN_TRACK_CHANGES:
1070                 trackChanges();
1071                 break;
1072
1073         case LFUN_MERGE_CHANGES:
1074                 owner_->getDialogs().show("changes");
1075                 break;
1076
1077         case LFUN_ACCEPT_ALL_CHANGES: {
1078                 bv_->cursor().reset(bv_->buffer()->inset());
1079 #ifdef WITH_WARNINGS
1080 #warning FIXME changes
1081 #endif
1082                 while (lyx::find::findNextChange(bv_))
1083                         bv_->getLyXText()->acceptChange(bv_->cursor());
1084                 update();
1085                 break;
1086         }
1087
1088         case LFUN_REJECT_ALL_CHANGES: {
1089                 bv_->cursor().reset(bv_->buffer()->inset());
1090 #ifdef WITH_WARNINGS
1091 #warning FIXME changes
1092 #endif
1093                 while (lyx::find::findNextChange(bv_))
1094                         bv_->getLyXText()->rejectChange(bv_->cursor());
1095                 update();
1096                 break;
1097         }
1098
1099         case LFUN_WORD_FIND:
1100                 lyx::find::find(bv_, cmd);
1101                 break;
1102
1103         case LFUN_WORD_REPLACE:
1104                 lyx::find::replace(bv_, cmd);
1105                 break;
1106
1107         case LFUN_MARK_OFF:
1108                 cur.clearSelection();
1109                 update();
1110                 cur.resetAnchor();
1111                 cur.message(N_("Mark off"));
1112                 break;
1113
1114         case LFUN_MARK_ON:
1115                 cur.clearSelection();
1116                 cur.mark() = true;
1117                 update();
1118                 cur.resetAnchor();
1119                 cur.message(N_("Mark on"));
1120                 break;
1121
1122         case LFUN_SETMARK:
1123                 cur.clearSelection();
1124                 if (cur.mark()) {
1125                         cur.mark() = false;
1126                         cur.message(N_("Mark removed"));
1127                 } else {
1128                         cur.mark() = true;
1129                         cur.message(N_("Mark set"));
1130                 }
1131                 cur.resetAnchor();
1132                 update();
1133                 break;
1134
1135         case LFUN_CENTER:
1136                 bv_->center();
1137                 break;
1138
1139         case LFUN_BEGINNINGBUFSEL:
1140                 bv_->cursor().reset(bv_->buffer()->inset());
1141                 if (!cur.selection())
1142                         cur.resetAnchor();
1143                 bv_->text()->cursorTop(cur);
1144                 finishUndo();
1145                 break;
1146
1147         case LFUN_ENDBUFSEL:
1148                 bv_->cursor().reset(bv_->buffer()->inset());
1149                 if (!cur.selection())
1150                         cur.resetAnchor();
1151                 bv_->text()->cursorBottom(cur);
1152                 finishUndo();
1153                 break;
1154
1155         default:
1156                 return false;
1157         }
1158
1159         return true;
1160 }