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