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 "coordcache.h"
  27 #include "cursor.h"
  28 #include "debug.h"
  29 #include "dispatchresult.h"
  30 #include "factory.h"
  31 #include "FloatList.h"
  32 #include "funcrequest.h"
  33 #include "FuncStatus.h"
  34 #include "gettext.h"
  35 #include "intl.h"
  36 #include "insetiterator.h"
  37 #include "lyx_cb.h" // added for Dispatch functions
  38 #include "lyx_main.h"
  39 #include "lyxfind.h"
  40 #include "lyxfunc.h"
  41 #include "lyxtext.h"
  42 #include "lyxrc.h"
  43 #include "lastfiles.h"
  44 #include "paragraph.h"
  45 #include "paragraph_funcs.h"
  46 #include "ParagraphParameters.h"
  47 #include "pariterator.h"
  48 #include "rowpainter.h"
  49 #include "undo.h"
  50 #include "vspace.h"
  51
  52 #include "insets/insetref.h"
  53 #include "insets/insettext.h"
  54
  55 #include "frontends/Alert.h"
  56 #include "frontends/Dialogs.h"
  57 #include "frontends/FileDialog.h"
  58 #include "frontends/LyXView.h"
  59 #include "frontends/LyXScreenFactory.h"
  60 #include "frontends/screen.h"
  61 #include "frontends/WorkArea.h"
  62 #include "frontends/WorkAreaFactory.h"
  63
  64 #include "graphics/Previews.h"
  65
  66 #include "support/filetools.h"
  67 #include "support/forkedcontr.h"
  68 #include "support/globbing.h"
  69 #include "support/path_defines.h"
  70 #include "support/tostr.h"
  71 #include "support/types.h"
  72
  73 #include <boost/bind.hpp>
  74
  75 #include <functional>
  76
  77 using lyx::pos_type;
  78
  79 using lyx::support::AddPath;
  80 using lyx::support::bformat;
  81 using lyx::support::FileFilterList;
  82 using lyx::support::FileSearch;
  83 using lyx::support::ForkedcallsController;
  84 using lyx::support::IsDirWriteable;
  85 using lyx::support::MakeDisplayPath;
  86 using lyx::support::MakeAbsPath;
  87 using lyx::support::strToUnsignedInt;
  88 using lyx::support::system_lyxdir;
  89
  90 using std::endl;
  91 using std::istringstream;
  92 using std::make_pair;
  93 using std::min;
  94 using std::string;
  95 using std::mem_fun_ref;
  96
  97
  98 extern BufferList bufferlist;
  99
 100
 101 namespace {
 102
 103 unsigned int const saved_positions_num = 20;
 104
 105 // All the below connection objects are needed because of a bug in some
 106 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
 107 // to these connections we avoid a segfault upon startup, and also at exit.
 108 // (Lgb)
 109
 110 boost::signals::connection dispatchcon;
 111 boost::signals::connection timecon;
 112 boost::signals::connection doccon;
 113 boost::signals::connection resizecon;
 114 boost::signals::connection kpresscon;
 115 boost::signals::connection selectioncon;
 116 boost::signals::connection lostcon;
 117
 118
 119 /// Get next inset of this class from current cursor position
 120 template <class T>
 121 T * getInsetByCode(LCursor & cur, InsetBase::Code code)
 122 {
 123         T * inset = 0;
 124         DocIterator it = cur;
 125         if (it.nextInset() &&
 126             it.nextInset()->lyxCode() == code) {
 127                 inset = static_cast<T*>(it.nextInset());
 128         }
 129         return inset;
 130 }
 131
 132
 133 } // anon namespace
 134
 135
 136 BufferView::Pimpl::Pimpl(BufferView & bv, LyXView * owner,
 137                          int width, int height)
 138         : bv_(&bv), owner_(owner), buffer_(0), cursor_timeout(400),
 139           using_xterm_cursor(false), cursor_(bv)
 140 {
 141         xsel_cache_.set = false;
 142
 143         workarea_.reset(WorkAreaFactory::create(*owner_, width, height));
 144         screen_.reset(LyXScreenFactory::create(workarea()));
 145
 146         // Setup the signals
 147         doccon = workarea().scrollDocView
 148                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 149         resizecon = workarea().workAreaResize
 150                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 151         dispatchcon = workarea().dispatch
 152                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 153         kpresscon = workarea().workAreaKeyPress
 154                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 155         selectioncon = workarea().selectionRequested
 156                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 157         lostcon = workarea().selectionLost
 158                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 159
 160         timecon = cursor_timeout.timeout
 161                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 162         cursor_timeout.start();
 163         saved_positions.resize(saved_positions_num);
 164 }
 165
 166
 167 void BufferView::Pimpl::addError(ErrorItem const & ei)
 168 {
 169         errorlist_.push_back(ei);
 170 }
 171
 172
 173 void BufferView::Pimpl::showReadonly(bool)
 174 {
 175         owner_->updateWindowTitle();
 176         owner_->getDialogs().updateBufferDependent(false);
 177 }
 178
 179
 180 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 181 {
 182         if (errorConnection_.connected())
 183                 disconnectBuffer();
 184
 185         errorConnection_ =
 186                 buf.error.connect(
 187                         boost::bind(&BufferView::Pimpl::addError, this, _1));
 188
 189         messageConnection_ =
 190                 buf.message.connect(
 191                         boost::bind(&LyXView::message, owner_, _1));
 192
 193         busyConnection_ =
 194                 buf.busy.connect(
 195                         boost::bind(&LyXView::busy, owner_, _1));
 196
 197         titleConnection_ =
 198                 buf.updateTitles.connect(
 199                         boost::bind(&LyXView::updateWindowTitle, owner_));
 200
 201         timerConnection_ =
 202                 buf.resetAutosaveTimers.connect(
 203                         boost::bind(&LyXView::resetAutosaveTimer, owner_));
 204
 205         readonlyConnection_ =
 206                 buf.readonly.connect(
 207                         boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 208
 209         closingConnection_ =
 210                 buf.closing.connect(
 211                         boost::bind(&BufferView::Pimpl::setBuffer, this, (Buffer *)0));
 212 }
 213
 214
 215 void BufferView::Pimpl::disconnectBuffer()
 216 {
 217         errorConnection_.disconnect();
 218         messageConnection_.disconnect();
 219         busyConnection_.disconnect();
 220         titleConnection_.disconnect();
 221         timerConnection_.disconnect();
 222         readonlyConnection_.disconnect();
 223         closingConnection_.disconnect();
 224 }
 225
 226
 227 void BufferView::Pimpl::newFile(string const & filename, string const & tname,
 228         bool isNamed)
 229 {
 230         setBuffer(::newFile(filename, tname, isNamed));
 231 }
 232
 233
 234 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 235 {
 236         // get absolute path of file and add ".lyx" to the filename if
 237         // necessary
 238         string s = FileSearch(string(), filename, "lyx");
 239
 240         bool const found = !s.empty();
 241
 242         if (!found)
 243                 s = filename;
 244
 245         // file already open?
 246         if (bufferlist.exists(s)) {
 247                 string const file = MakeDisplayPath(s, 20);
 248                 string text = bformat(_("The document %1$s is already "
 249                                         "loaded.\n\nDo you want to revert "
 250                                         "to the saved version?"), file);
 251                 int const ret = Alert::prompt(_("Revert to saved document?"),
 252                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 253
 254                 if (ret != 0) {
 255                         setBuffer(bufferlist.getBuffer(s));
 256                         return true;
 257                 }
 258                 // FIXME: should be LFUN_REVERT
 259                 if (!bufferlist.close(bufferlist.getBuffer(s), false))
 260                         return false;
 261                 // Fall through to new load. (Asger)
 262         }
 263
 264         Buffer * b;
 265
 266         if (found) {
 267                 b = bufferlist.newBuffer(s);
 268                 connectBuffer(*b);
 269                 if (!::loadLyXFile(b, s)) {
 270                         bufferlist.release(b);
 271                         return false;
 272                 }
 273         } else {
 274                 string text = bformat(_("The document %1$s does not yet "
 275                                         "exist.\n\nDo you want to create "
 276                                         "a new document?"), s);
 277                 int const ret = Alert::prompt(_("Create new document?"),
 278                          text, 0, 1, _("&Create"), _("Cancel"));
 279
 280                 if (ret == 0)
 281                         b = ::newFile(s, string(), true);
 282                 else
 283                         return false;
 284         }
 285
 286         setBuffer(b);
 287         bv_->showErrorList(_("Parse"));
 288
 289         if (tolastfiles)
 290                 LyX::ref().lastfiles().newFile(b->fileName());
 291
 292         return true;
 293 }
 294
 295
 296 WorkArea & BufferView::Pimpl::workarea() const
 297 {
 298         return *workarea_.get();
 299 }
 300
 301
 302 LyXScreen & BufferView::Pimpl::screen() const
 303 {
 304         return *screen_.get();
 305 }
 306
 307
 308 Painter & BufferView::Pimpl::painter() const
 309 {
 310         return workarea().getPainter();
 311 }
 312
 313
 314 void BufferView::Pimpl::top_y(int y)
 315 {
 316         top_y_ = y;
 317 }
 318
 319
 320 int BufferView::Pimpl::top_y() const
 321 {
 322         return top_y_;
 323 }
 324
 325
 326 void BufferView::Pimpl::setBuffer(Buffer * b)
 327 {
 328         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 329                             << b << ')' << endl;
 330         if (buffer_)
 331                 disconnectBuffer();
 332
 333         // if we are closing current buffer, switch to the first in
 334         // buffer list.
 335         if (!b) {
 336                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 337                 // we are closing the buffer, use the first buffer as current
 338                 buffer_ = bufferlist.first();
 339                 owner_->getDialogs().hideBufferDependent();
 340         } else {
 341                 // set current buffer
 342                 buffer_ = b;
 343         }
 344
 345         // reset old cursor
 346         top_y_ = 0;
 347         cursor_ = LCursor(*bv_);
 348
 349         // if we're quitting lyx, don't bother updating stuff
 350         if (quitting)
 351                 return;
 352
 353         if (buffer_) {
 354                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 355                 connectBuffer(*buffer_);
 356
 357                 cursor_.push(buffer_->inset());
 358                 cursor_.resetAnchor();
 359                 buffer_->text().init(bv_);
 360                 buffer_->text().setCurrentFont(cursor_);
 361
 362                 // If we don't have a text object for this, we make one
 363                 //if (bv_->text() == 0)
 364                 //      resizeCurrentBuffer();
 365
 366                 // Buffer-dependent dialogs should be updated or
 367                 // hidden. This should go here because some dialogs (eg ToC)
 368                 // require bv_->text.
 369                 owner_->getDialogs().updateBufferDependent(true);
 370         }
 371
 372         update();
 373         updateScrollbar();
 374         owner_->updateMenubar();
 375         owner_->updateToolbars();
 376         owner_->updateLayoutChoice();
 377         owner_->updateWindowTitle();
 378
 379         // This is done after the layout combox has been populated
 380         if (buffer_)
 381                 owner_->setLayout(cursor_.paragraph().layout()->name());
 382
 383         if (buffer_ && lyx::graphics::Previews::status() != LyXRC::PREVIEW_OFF)
 384                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 385 }
 386
 387
 388 bool BufferView::Pimpl::fitCursor()
 389 {
 390         // to get the correct y cursor info
 391         lyxerr[Debug::DEBUG] << "BufferView::fitCursor" << std::endl;
 392         lyx::par_type const pit = bv_->cursor().bottom().par();
 393         bv_->text()->redoParagraph(pit);
 394         refreshPar(*bv_, *bv_->text(), pit);
 395
 396         if (!screen().fitCursor(bv_))
 397                 return false;
 398         updateScrollbar();
 399         return true;
 400 }
 401
 402
 403 void BufferView::Pimpl::redoCurrentBuffer()
 404 {
 405         lyxerr[Debug::DEBUG] << "BufferView::redoCurrentBuffer" << endl;
 406         if (buffer_ && bv_->text()) {
 407                 resizeCurrentBuffer();
 408                 updateScrollbar();
 409                 owner_->updateLayoutChoice();
 410         }
 411 }
 412
 413
 414 void BufferView::Pimpl::resizeCurrentBuffer()
 415 {
 416         lyxerr[Debug::DEBUG] << "resizeCurrentBuffer" << endl;
 417         owner_->busy(true);
 418         owner_->message(_("Formatting document..."));
 419
 420         LyXText * text = bv_->text();
 421         if (!text)
 422                 return;
 423
 424         text->init(bv_);
 425         update();
 426         fitCursor();
 427
 428         switchKeyMap();
 429         owner_->busy(false);
 430
 431         // reset the "Formatting..." message
 432         owner_->clearMessage();
 433
 434         updateScrollbar();
 435 }
 436
 437
 438 void BufferView::Pimpl::updateScrollbar()
 439 {
 440         if (!bv_->text()) {
 441                 lyxerr[Debug::DEBUG] << "no text in updateScrollbar" << endl;
 442                 workarea().setScrollbarParams(0, 0, 0);
 443                 return;
 444         }
 445
 446         LyXText const & t = *bv_->text();
 447
 448         lyxerr[Debug::GUI]
 449                 << "Updating scrollbar: height: " << t.height()
 450                 << " top_y: " << top_y()
 451                 << " default height " << defaultRowHeight() << endl;
 452
 453         workarea().setScrollbarParams(t.height(), top_y(), defaultRowHeight());
 454 }
 455
 456
 457 void BufferView::Pimpl::scrollDocView(int value)
 458 {
 459         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 460
 461         if (!buffer_)
 462                 return;
 463
 464         screen().hideCursor();
 465
 466         top_y(value);
 467         screen().redraw(*bv_);
 468
 469         if (!lyxrc.cursor_follows_scrollbar)
 470                 return;
 471
 472         int const height = defaultRowHeight();
 473         int const first = top_y() + height;
 474         int const last = top_y() + workarea().workHeight() - height;
 475
 476         bv_->cursor().reset(bv_->buffer()->inset());
 477         LyXText * text = bv_->text();
 478         int y = text->cursorY(bv_->cursor().front());
 479         if (y < first)
 480                 y = first;
 481         if (y > last)
 482                 y = last;
 483         text->setCursorFromCoordinates(bv_->cursor(), 0, y);
 484
 485         owner_->updateLayoutChoice();
 486 }
 487
 488
 489 void BufferView::Pimpl::scroll(int lines)
 490 {
 491         if (!buffer_)
 492                 return;
 493
 494         LyXText const * t = bv_->text();
 495         int const line_height = defaultRowHeight();
 496
 497         // The new absolute coordinate
 498         int new_top_y = top_y() + lines * line_height;
 499
 500         // Restrict to a valid value
 501         new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
 502         new_top_y = std::max(0, new_top_y);
 503
 504         scrollDocView(new_top_y);
 505
 506         // Update the scrollbar.
 507         workarea().setScrollbarParams(t->height(), top_y(), defaultRowHeight());
 508 }
 509
 510
 511 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 512                                          key_modifier::state state)
 513 {
 514         bv_->owner()->getLyXFunc().processKeySym(key, state);
 515
 516         /* This is perhaps a bit of a hack. When we move
 517          * around, or type, it's nice to be able to see
 518          * the cursor immediately after the keypress. So
 519          * we reset the toggle timeout and force the visibility
 520          * of the cursor. Note we cannot do this inside
 521          * dispatch() itself, because that's called recursively.
 522          */
 523         if (available()) {
 524                 cursor_timeout.restart();
 525                 screen().showCursor(*bv_);
 526         }
 527 }
 528
 529
 530 void BufferView::Pimpl::selectionRequested()
 531 {
 532         static string sel;
 533
 534         if (!available())
 535                 return;
 536
 537         LCursor & cur = bv_->cursor();
 538
 539         if (!cur.selection()) {
 540                 xsel_cache_.set = false;
 541                 return;
 542         }
 543
 544         if (!xsel_cache_.set ||
 545             cur.back() != xsel_cache_.cursor ||
 546             cur.anchor_.back() != xsel_cache_.anchor)
 547         {
 548                 xsel_cache_.cursor = cur.back();
 549                 xsel_cache_.anchor = cur.anchor_.back();
 550                 xsel_cache_.set = cur.selection();
 551                 sel = cur.selectionAsString(false);
 552                 if (!sel.empty())
 553                         workarea().putClipboard(sel);
 554         }
 555 }
 556
 557
 558 void BufferView::Pimpl::selectionLost()
 559 {
 560         if (available()) {
 561                 screen().hideCursor();
 562                 bv_->cursor().clearSelection();
 563                 xsel_cache_.set = false;
 564         }
 565 }
 566
 567
 568 void BufferView::Pimpl::workAreaResize()
 569 {
 570         static int work_area_width;
 571         static int work_area_height;
 572
 573         bool const widthChange = workarea().workWidth() != work_area_width;
 574         bool const heightChange = workarea().workHeight() != work_area_height;
 575
 576         // update from work area
 577         work_area_width = workarea().workWidth();
 578         work_area_height = workarea().workHeight();
 579
 580         if (buffer_ && widthChange) {
 581                 // The visible LyXView need a resize
 582                 resizeCurrentBuffer();
 583         }
 584
 585         if (widthChange || heightChange)
 586                 update();
 587
 588         // always make sure that the scrollbar is sane.
 589         updateScrollbar();
 590         owner_->updateLayoutChoice();
 591 }
 592
 593
 594 void BufferView::Pimpl::update()
 595 {
 596         //lyxerr << "BufferView::Pimpl::update(), buffer: " << buffer_ << endl;
 597         // fix cursor coordinate cache in case something went wrong
 598
 599         // check needed to survive LyX startup
 600         if (buffer_) {
 601                 // update macro store
 602                 buffer_->buildMacros();
 603
 604                 // update all 'visible' paragraphs
 605                 lyx::par_type beg, end;
 606                 getParsInRange(buffer_->paragraphs(),
 607                                top_y(), top_y() + workarea().workHeight(),
 608                                beg, end);
 609                 bv_->text()->redoParagraphs(beg, end);
 610
 611                 // and the scrollbar
 612                 updateScrollbar();
 613         }
 614
 615         // remove old position cache
 616         theCoords.clear();
 617
 618         // The real, big redraw.
 619         screen().redraw(*bv_);
 620
 621         bv_->owner()->view_state_changed();
 622 }
 623
 624
 625 // Callback for cursor timer
 626 void BufferView::Pimpl::cursorToggle()
 627 {
 628         if (buffer_) {
 629                 screen().toggleCursor(*bv_);
 630
 631                 // Use this opportunity to deal with any child processes that
 632                 // have finished but are waiting to communicate this fact
 633                 // to the rest of LyX.
 634                 ForkedcallsController & fcc = ForkedcallsController::get();
 635                 if (fcc.processesCompleted())
 636                         fcc.handleCompletedProcesses();
 637         }
 638
 639         cursor_timeout.restart();
 640 }
 641
 642
 643 bool BufferView::Pimpl::available() const
 644 {
 645         return buffer_ && bv_->text();
 646 }
 647
 648
 649 Change const BufferView::Pimpl::getCurrentChange()
 650 {
 651         if (!bv_->buffer()->params().tracking_changes)
 652                 return Change(Change::UNCHANGED);
 653
 654         LyXText * text = bv_->getLyXText();
 655         LCursor & cur = bv_->cursor();
 656
 657         if (!cur.selection())
 658                 return Change(Change::UNCHANGED);
 659
 660         return text->getPar(cur.selBegin().par()).
 661                         lookupChangeFull(cur.selBegin().pos());
 662 }
 663
 664
 665 void BufferView::Pimpl::savePosition(unsigned int i)
 666 {
 667         if (i >= saved_positions_num)
 668                 return;
 669         BOOST_ASSERT(bv_->cursor().inTexted());
 670         saved_positions[i] = Position(buffer_->fileName(),
 671                                       bv_->cursor().paragraph().id(),
 672                                       bv_->cursor().pos());
 673         if (i > 0)
 674                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 675 }
 676
 677
 678 void BufferView::Pimpl::restorePosition(unsigned int i)
 679 {
 680         if (i >= saved_positions_num)
 681                 return;
 682
 683         string const fname = saved_positions[i].filename;
 684
 685         bv_->cursor().clearSelection();
 686
 687         if (fname != buffer_->fileName()) {
 688                 Buffer * b = 0;
 689                 if (bufferlist.exists(fname))
 690                         b = bufferlist.getBuffer(fname);
 691                 else {
 692                         b = bufferlist.newBuffer(fname);
 693                         ::loadLyXFile(b, fname); // don't ask, just load it
 694                 }
 695                 if (b)
 696                         setBuffer(b);
 697         }
 698
 699         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 700         if (par == buffer_->par_iterator_end())
 701                 return;
 702
 703         bv_->text()->setCursor(bv_->cursor(), par.pit(),
 704                 min(par->size(), saved_positions[i].par_pos));
 705
 706         if (i > 0)
 707                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 708 }
 709
 710
 711 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 712 {
 713         return i < saved_positions_num && !saved_positions[i].filename.empty();
 714 }
 715
 716
 717 void BufferView::Pimpl::switchKeyMap()
 718 {
 719         if (!lyxrc.rtl_support)
 720                 return;
 721
 722         Intl & intl = owner_->getIntl();
 723         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 724                 if (intl.keymap == Intl::PRIMARY)
 725                         intl.KeyMapSec();
 726         } else {
 727                 if (intl.keymap == Intl::SECONDARY)
 728                         intl.KeyMapPrim();
 729         }
 730 }
 731
 732
 733 void BufferView::Pimpl::center()
 734 {
 735         LyXText * text = bv_->text();
 736
 737         bv_->cursor().clearSelection();
 738         int const half_height = workarea().workHeight() / 2;
 739         int new_y = text->cursorY(bv_->cursor().front()) - half_height;
 740         if (new_y < 0)
 741                 new_y = 0;
 742
 743         // FIXME: look at this comment again ...
 744         // This updates top_y() but means the fitCursor() call
 745         // from the update(FITCUR) doesn't realise that we might
 746         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 747         // the scrollbar to be updated as it should, so we have
 748         // to do it manually. Any operation that does a center()
 749         // and also might have moved top_y() must make sure to call
 750         // updateScrollbar() currently. Never mind that this is a
 751         // pretty obfuscated way of updating text->top_y()
 752         top_y(new_y);
 753 }
 754
 755
 756 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 757 {
 758         workarea().putClipboard(stuff);
 759 }
 760
 761
 762 void BufferView::Pimpl::MenuInsertLyXFile(string const & filenm)
 763 {
 764         string filename = filenm;
 765
 766         if (filename.empty()) {
 767                 // Launch a file browser
 768                 string initpath = lyxrc.document_path;
 769
 770                 if (available()) {
 771                         string const trypath = owner_->buffer()->filePath();
 772                         // If directory is writeable, use this as default.
 773                         if (IsDirWriteable(trypath))
 774                                 initpath = trypath;
 775                 }
 776
 777                 FileDialog fileDlg(_("Select LyX document to insert"),
 778                         LFUN_FILE_INSERT,
 779                         make_pair(string(_("Documents|#o#O")),
 780                                   string(lyxrc.document_path)),
 781                         make_pair(string(_("Examples|#E#e")),
 782                                   string(AddPath(system_lyxdir(), "examples"))));
 783
 784                 FileDialog::Result result =
 785                         fileDlg.open(initpath,
 786                                      FileFilterList(_("LyX Documents (*.lyx)")),
 787                                      string());
 788
 789                 if (result.first == FileDialog::Later)
 790                         return;
 791
 792                 filename = result.second;
 793
 794                 // check selected filename
 795                 if (filename.empty()) {
 796                         owner_->message(_("Canceled."));
 797                         return;
 798                 }
 799         }
 800
 801         // get absolute path of file and add ".lyx" to the filename if
 802         // necessary
 803         filename = FileSearch(string(), filename, "lyx");
 804
 805         string const disp_fn = MakeDisplayPath(filename);
 806         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 807
 808         bv_->cursor().clearSelection();
 809         bv_->text()->breakParagraph(bv_->cursor());
 810
 811         BOOST_ASSERT(bv_->cursor().inTexted());
 812
 813         string const fname = MakeAbsPath(filename);
 814         bool const res = bv_->buffer()->readFile(fname, bv_->cursor().par());
 815         bv_->resize();
 816
 817         string s = res ? _("Document %1$s inserted.")
 818                        : _("Could not insert document %1$s");
 819         owner_->message(bformat(s, disp_fn));
 820 }
 821
 822
 823 void BufferView::Pimpl::trackChanges()
 824 {
 825         Buffer * buf = bv_->buffer();
 826         bool const tracking = buf->params().tracking_changes;
 827
 828         if (!tracking) {
 829                 for_each(buf->par_iterator_begin(),
 830                          buf->par_iterator_end(),
 831                          bind(&Paragraph::trackChanges, _1, Change::UNCHANGED));
 832                 buf->params().tracking_changes = true;
 833
 834                 // we cannot allow undos beyond the freeze point
 835                 buf->undostack().clear();
 836         } else {
 837                 update();
 838                 bv_->text()->setCursor(bv_->cursor(), 0, 0);
 839 #ifdef WITH_WARNINGS
 840 #warning changes FIXME
 841 #endif
 842                 bool found = lyx::find::findNextChange(bv_);
 843                 if (found) {
 844                         owner_->getDialogs().show("changes");
 845                         return;
 846                 }
 847
 848                 for_each(buf->par_iterator_begin(),
 849                          buf->par_iterator_end(),
 850                          mem_fun_ref(&Paragraph::untrackChanges));
 851
 852                 buf->params().tracking_changes = false;
 853         }
 854
 855         buf->redostack().clear();
 856 }
 857
 858
 859 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd0)
 860 {
 861         lyxerr << "BufferView::Pimpl::workAreaDispatch: request: "
 862           << cmd0 << std::endl;
 863         // this is only called for mouse related events including
 864         // LFUN_FILE_OPEN generated by drag-and-drop.
 865         FuncRequest cmd = cmd0;
 866
 867         // handle drag&drop
 868         if (cmd.action == LFUN_FILE_OPEN) {
 869                 owner_->dispatch(cmd);
 870                 return true;
 871         }
 872
 873         cmd.y += bv_->top_y();
 874         if (!bv_->buffer())
 875                 return false;
 876
 877         LCursor cur(*bv_);
 878         cur.push(bv_->buffer()->inset());
 879         cur.selection() = bv_->cursor().selection();
 880
 881         // Doesn't go through lyxfunc, so we need to update
 882         // the layout choice etc. ourselves
 883
 884         // e.g. Qt mouse press when no buffer
 885         if (!available())
 886                 return false;
 887
 888         screen().hideCursor();
 889
 890         // Either the inset under the cursor or the
 891         // surrounding LyXText will handle this event.
 892
 893         // Build temporary cursor.
 894         InsetBase * inset = bv_->text()->editXY(cur, cmd.x, cmd.y);
 895         lyxerr << " * created temp cursor: " << inset << endl;
 896         lyxerr << " * hit inset at tip: " << inset << endl;
 897         lyxerr << " * created temp cursor:" << cur << endl;
 898
 899         // Put anchor at the same position.
 900         cur.resetAnchor();
 901
 902         // Try to dispatch to an non-editable inset near this position
 903         // via the temp cursor. If the inset wishes to change the real
 904         // cursor it has to do so explicitly by using
 905         //  cur.bv().cursor() = cur;  (or similar)
 906         if (inset)
 907                 inset->dispatch(cur, cmd);
 908
 909         // Now dispatch to the temporary cursor. If the real cursor should
 910         // be modified, the inset's dispatch has to do so explicitly.
 911         if (!cur.result().dispatched())
 912                 cur.dispatch(cmd);
 913
 914         if (cur.result().dispatched()) {
 915                 // Redraw if requested or necessary.
 916                 if (fitCursor() || cur.result().update())
 917                         update();
 918         }
 919
 920         // see workAreaKeyPress
 921         cursor_timeout.restart();
 922         screen().showCursor(*bv_);
 923
 924         // skip these when selecting
 925         if (cmd.action != LFUN_MOUSE_MOTION) {
 926                 owner_->updateLayoutChoice();
 927                 owner_->updateToolbars();
 928         }
 929
 930         // slight hack: this is only called currently when we
 931         // clicked somewhere, so we force through the display
 932         // of the new status here.
 933         owner_->clearMessage();
 934         return true;
 935 }
 936
 937
 938 FuncStatus BufferView::Pimpl::getStatus(FuncRequest const & cmd)
 939 {
 940         Buffer * buf = bv_->buffer();
 941
 942         FuncStatus flag;
 943
 944         switch (cmd.action) {
 945
 946         case LFUN_UNDO:
 947                 flag.enabled(!buf->undostack().empty());
 948                 break;
 949         case LFUN_REDO:
 950                 flag.enabled(!buf->redostack().empty());
 951                 break;
 952         case LFUN_FILE_INSERT:
 953         case LFUN_FILE_INSERT_ASCII_PARA:
 954         case LFUN_FILE_INSERT_ASCII:
 955         case LFUN_FONT_STATE:
 956         case LFUN_INSERT_LABEL:
 957         case LFUN_BOOKMARK_SAVE:
 958         case LFUN_REF_GOTO:
 959         case LFUN_WORD_FIND:
 960         case LFUN_WORD_REPLACE:
 961         case LFUN_MARK_OFF:
 962         case LFUN_MARK_ON:
 963         case LFUN_SETMARK:
 964         case LFUN_CENTER:
 965         case LFUN_BEGINNINGBUF:
 966         case LFUN_ENDBUF:
 967         case LFUN_BEGINNINGBUFSEL:
 968         case LFUN_ENDBUFSEL:
 969                 flag.enabled(true);
 970                 break;
 971         case LFUN_BOOKMARK_GOTO:
 972                 flag.enabled(bv_->isSavedPosition(strToUnsignedInt(cmd.argument)));
 973                 break;
 974         case LFUN_TRACK_CHANGES:
 975                 flag.enabled(true);
 976                 flag.setOnOff(buf->params().tracking_changes);
 977                 break;
 978
 979         case LFUN_MERGE_CHANGES:
 980         case LFUN_ACCEPT_CHANGE: // what about these two
 981         case LFUN_REJECT_CHANGE: // what about these two
 982         case LFUN_ACCEPT_ALL_CHANGES:
 983         case LFUN_REJECT_ALL_CHANGES:
 984                 flag.enabled(buf && buf->params().tracking_changes);
 985                 break;
 986         default:
 987                 flag.enabled(false);
 988         }
 989
 990         return flag;
 991 }
 992
 993
 994
 995 bool BufferView::Pimpl::dispatch(FuncRequest const & cmd)
 996 {
 997         //lyxerr << "BufferView::Pimpl::dispatch  cmd: " << cmd << std::endl;
 998         // Make sure that the cached BufferView is correct.
 999         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
1000                 << " action[" << cmd.action << ']'
1001                 << " arg[" << cmd.argument << ']'
1002                 << " x[" << cmd.x << ']'
1003                 << " y[" << cmd.y << ']'
1004                 << " button[" << cmd.button() << ']'
1005                 << endl;
1006
1007         LCursor & cur = bv_->cursor();
1008
1009         switch (cmd.action) {
1010
1011         case LFUN_UNDO:
1012                 if (available()) {
1013                         cur.message(_("Undo"));
1014                         cur.clearSelection();
1015                         if (!textUndo(*bv_))
1016                                 cur.message(_("No further undo information"));
1017                         update();
1018                         switchKeyMap();
1019                 }
1020                 break;
1021
1022         case LFUN_REDO:
1023                 if (available()) {
1024                         cur.message(_("Redo"));
1025                         cur.clearSelection();
1026                         if (!textRedo(*bv_))
1027                                 cur.message(_("No further redo information"));
1028                         update();
1029                         switchKeyMap();
1030                 }
1031                 break;
1032
1033         case LFUN_FILE_INSERT:
1034                 MenuInsertLyXFile(cmd.argument);
1035                 break;
1036
1037         case LFUN_FILE_INSERT_ASCII_PARA:
1038                 InsertAsciiFile(bv_, cmd.argument, true);
1039                 break;
1040
1041         case LFUN_FILE_INSERT_ASCII:
1042                 InsertAsciiFile(bv_, cmd.argument, false);
1043                 break;
1044
1045         case LFUN_FONT_STATE:
1046                 cur.message(cur.currentState());
1047                 break;
1048
1049         case LFUN_BOOKMARK_SAVE:
1050                 savePosition(strToUnsignedInt(cmd.argument));
1051                 break;
1052
1053         case LFUN_BOOKMARK_GOTO:
1054                 restorePosition(strToUnsignedInt(cmd.argument));
1055                 break;
1056
1057         case LFUN_REF_GOTO: {
1058                 string label = cmd.argument;
1059                 if (label.empty()) {
1060                         InsetRef * inset =
1061                                 getInsetByCode<InsetRef>(bv_->cursor(),
1062                                                          InsetBase::REF_CODE);
1063                         if (inset) {
1064                                 label = inset->getContents();
1065                                 savePosition(0);
1066                         }
1067                 }
1068
1069                 if (!label.empty())
1070                         bv_->gotoLabel(label);
1071                 break;
1072         }
1073
1074         case LFUN_TRACK_CHANGES:
1075                 trackChanges();
1076                 break;
1077
1078         case LFUN_MERGE_CHANGES:
1079                 owner_->getDialogs().show("changes");
1080                 break;
1081
1082         case LFUN_ACCEPT_ALL_CHANGES: {
1083                 bv_->cursor().reset(bv_->buffer()->inset());
1084 #ifdef WITH_WARNINGS
1085 #warning FIXME changes
1086 #endif
1087                 while (lyx::find::findNextChange(bv_))
1088                         bv_->getLyXText()->acceptChange(bv_->cursor());
1089                 update();
1090                 break;
1091         }
1092
1093         case LFUN_REJECT_ALL_CHANGES: {
1094                 bv_->cursor().reset(bv_->buffer()->inset());
1095 #ifdef WITH_WARNINGS
1096 #warning FIXME changes
1097 #endif
1098                 while (lyx::find::findNextChange(bv_))
1099                         bv_->getLyXText()->rejectChange(bv_->cursor());
1100                 break;
1101         }
1102
1103         case LFUN_WORD_FIND:
1104                 lyx::find::find(bv_, cmd);
1105                 break;
1106
1107         case LFUN_WORD_REPLACE:
1108                 lyx::find::replace(bv_, cmd);
1109                 break;
1110
1111         case LFUN_MARK_OFF:
1112                 cur.clearSelection();
1113                 cur.resetAnchor();
1114                 cur.message(N_("Mark off"));
1115                 break;
1116
1117         case LFUN_MARK_ON:
1118                 cur.clearSelection();
1119                 cur.mark() = true;
1120                 cur.resetAnchor();
1121                 cur.message(N_("Mark on"));
1122                 break;
1123
1124         case LFUN_SETMARK:
1125                 cur.clearSelection();
1126                 if (cur.mark()) {
1127                         cur.mark() = false;
1128                         cur.message(N_("Mark removed"));
1129                 } else {
1130                         cur.mark() = true;
1131                         cur.message(N_("Mark set"));
1132                 }
1133                 cur.resetAnchor();
1134                 break;
1135
1136         case LFUN_CENTER:
1137                 bv_->center();
1138                 break;
1139
1140         case LFUN_BEGINNINGBUFSEL:
1141                 bv_->cursor().reset(bv_->buffer()->inset());
1142                 if (!cur.selection())
1143                         cur.resetAnchor();
1144                 bv_->text()->cursorTop(cur);
1145                 finishUndo();
1146                 break;
1147
1148         case LFUN_ENDBUFSEL:
1149                 bv_->cursor().reset(bv_->buffer()->inset());
1150                 if (!cur.selection())
1151                         cur.resetAnchor();
1152                 bv_->text()->cursorBottom(cur);
1153                 finishUndo();
1154                 break;
1155
1156         default:
1157                 return false;
1158         }
1159
1160         return true;
1161 }