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 Braustein
   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 "gettext.h"
  33 #include "intl.h"
  34 #include "iterators.h"
  35 #include "lyx_cb.h" // added for Dispatch functions
  36 #include "lyx_main.h"
  37 #include "lyxfind.h"
  38 #include "lyxfunc.h"
  39 #include "lyxtext.h"
  40 #include "lyxrc.h"
  41 #include "lastfiles.h"
  42 #include "paragraph.h"
  43 #include "paragraph_funcs.h"
  44 #include "ParagraphParameters.h"
  45 #include "undo.h"
  46 #include "vspace.h"
  47
  48 #include "insets/insetfloatlist.h"
  49 #include "insets/insetref.h"
  50
  51 #include "frontends/Alert.h"
  52 #include "frontends/Dialogs.h"
  53 #include "frontends/FileDialog.h"
  54 #include "frontends/LyXView.h"
  55 #include "frontends/LyXScreenFactory.h"
  56 #include "frontends/screen.h"
  57 #include "frontends/WorkArea.h"
  58 #include "frontends/WorkAreaFactory.h"
  59
  60 #include "graphics/Previews.h"
  61
  62 #include "mathed/formulabase.h"
  63
  64 #include "support/filetools.h"
  65 #include "support/path_defines.h"
  66 #include "support/tostr.h"
  67
  68 #include <boost/bind.hpp>
  69
  70 using bv_funcs::currentState;
  71
  72 using lyx::pos_type;
  73
  74 using lyx::support::AddPath;
  75 using lyx::support::bformat;
  76 using lyx::support::FileSearch;
  77 using lyx::support::IsDirWriteable;
  78 using lyx::support::MakeDisplayPath;
  79 using lyx::support::strToUnsignedInt;
  80 using lyx::support::system_lyxdir;
  81
  82 using std::endl;
  83 using std::make_pair;
  84 using std::min;
  85 using std::string;
  86
  87
  88 extern BufferList bufferlist;
  89
  90
  91 namespace {
  92
  93 unsigned int const saved_positions_num = 20;
  94
  95 // All the below connection objects are needed because of a bug in some
  96 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
  97 // to these connections we avoid a segfault upon startup, and also at exit.
  98 // (Lgb)
  99
 100 boost::signals::connection dispatchcon;
 101 boost::signals::connection timecon;
 102 boost::signals::connection doccon;
 103 boost::signals::connection resizecon;
 104 boost::signals::connection kpresscon;
 105 boost::signals::connection selectioncon;
 106 boost::signals::connection lostcon;
 107
 108
 109 } // anon namespace
 110
 111
 112 BufferView::Pimpl::Pimpl(BufferView * bv, LyXView * owner,
 113              int xpos, int ypos, int width, int height)
 114         : bv_(bv), owner_(owner), buffer_(0), cursor_timeout(400),
 115           using_xterm_cursor(false), cursor_(bv)
 116 {
 117         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 118         screen_.reset(LyXScreenFactory::create(workarea()));
 119
 120         // Setup the signals
 121         doccon = workarea().scrollDocView
 122                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 123         resizecon = workarea().workAreaResize
 124                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 125         dispatchcon = workarea().dispatch
 126                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 127         kpresscon = workarea().workAreaKeyPress
 128                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 129         selectioncon = workarea().selectionRequested
 130                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 131         lostcon = workarea().selectionLost
 132                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 133
 134         timecon = cursor_timeout.timeout
 135                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 136         cursor_timeout.start();
 137         saved_positions.resize(saved_positions_num);
 138 }
 139
 140
 141 void BufferView::Pimpl::addError(ErrorItem const & ei)
 142 {
 143         errorlist_.push_back(ei);
 144 }
 145
 146
 147 void BufferView::Pimpl::showReadonly(bool)
 148 {
 149         owner_->updateWindowTitle();
 150         owner_->getDialogs().updateBufferDependent(false);
 151 }
 152
 153
 154 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 155 {
 156         if (errorConnection_.connected())
 157                 disconnectBuffer();
 158
 159         errorConnection_ = buf.error.connect(boost::bind(&BufferView::Pimpl::addError, this, _1));
 160         messageConnection_ = buf.message.connect(boost::bind(&LyXView::message, owner_, _1));
 161         busyConnection_ = buf.busy.connect(boost::bind(&LyXView::busy, owner_, _1));
 162         titleConnection_ = buf.updateTitles.connect(boost::bind(&LyXView::updateWindowTitle, owner_));
 163         timerConnection_ = buf.resetAutosaveTimers.connect(boost::bind(&LyXView::resetAutosaveTimer, owner_));
 164         readonlyConnection_ = buf.readonly.connect(boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 165         closingConnection_ = buf.closing.connect(boost::bind(&BufferView::Pimpl::buffer, this, (Buffer *)0));
 166 }
 167
 168
 169 void BufferView::Pimpl::disconnectBuffer()
 170 {
 171         errorConnection_.disconnect();
 172         messageConnection_.disconnect();
 173         busyConnection_.disconnect();
 174         titleConnection_.disconnect();
 175         timerConnection_.disconnect();
 176         readonlyConnection_.disconnect();
 177         closingConnection_.disconnect();
 178 }
 179
 180
 181 bool BufferView::Pimpl::newFile(string const & filename,
 182                                 string const & tname,
 183                                 bool isNamed)
 184 {
 185         Buffer * b = ::newFile(filename, tname, isNamed);
 186         buffer(b);
 187         return true;
 188 }
 189
 190
 191 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 192 {
 193         // get absolute path of file and add ".lyx" to the filename if
 194         // necessary
 195         string s = FileSearch(string(), filename, "lyx");
 196
 197         bool const found = !s.empty();
 198
 199         if (!found)
 200                 s = filename;
 201
 202         // file already open?
 203         if (bufferlist.exists(s)) {
 204                 string const file = MakeDisplayPath(s, 20);
 205                 string text = bformat(_("The document %1$s is already "
 206                                         "loaded.\n\nDo you want to revert "
 207                                         "to the saved version?"), file);
 208                 int const ret = Alert::prompt(_("Revert to saved document?"),
 209                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 210
 211                 if (ret != 0) {
 212                         buffer(bufferlist.getBuffer(s));
 213                         return true;
 214                 } else {
 215                         // FIXME: should be LFUN_REVERT
 216                         if (!bufferlist.close(bufferlist.getBuffer(s), false))
 217                                 return false;
 218                         // Fall through to new load. (Asger)
 219                 }
 220         }
 221
 222         Buffer * b;
 223
 224         if (found) {
 225                 b = bufferlist.newBuffer(s);
 226                 connectBuffer(*b);
 227                 if (!::loadLyXFile(b, s)) {
 228                         bufferlist.release(b);
 229                         return false;
 230                 }
 231         } else {
 232                 string text = bformat(_("The document %1$s does not yet "
 233                                         "exist.\n\nDo you want to create "
 234                                         "a new document?"), s);
 235                 int const ret = Alert::prompt(_("Create new document?"),
 236                          text, 0, 1, _("&Create"), _("Cancel"));
 237
 238                 if (ret == 0)
 239                         b = ::newFile(s, string(), true);
 240                 else
 241                         return false;
 242         }
 243
 244         buffer(b);
 245         bv_->showErrorList(_("Parse"));
 246
 247         if (tolastfiles)
 248                 LyX::ref().lastfiles().newFile(b->fileName());
 249
 250         return true;
 251 }
 252
 253
 254 WorkArea & BufferView::Pimpl::workarea() const
 255 {
 256         return *workarea_.get();
 257 }
 258
 259
 260 LyXScreen & BufferView::Pimpl::screen() const
 261 {
 262         return *screen_.get();
 263 }
 264
 265
 266 Painter & BufferView::Pimpl::painter() const
 267 {
 268         return workarea().getPainter();
 269 }
 270
 271
 272 void BufferView::Pimpl::top_y(int y)
 273 {
 274         top_y_ = y;
 275 }
 276
 277
 278 int BufferView::Pimpl::top_y() const
 279 {
 280         return top_y_;
 281 }
 282
 283
 284 void BufferView::Pimpl::buffer(Buffer * b)
 285 {
 286         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 287                             << b << ')' << endl;
 288         if (buffer_) {
 289                 disconnectBuffer();
 290                 delete bv_->text;
 291                 bv_->text = 0;
 292         }
 293
 294         // set current buffer
 295         buffer_ = b;
 296
 297         top_y_ = 0;
 298
 299         // if we're quitting lyx, don't bother updating stuff
 300         if (quitting)
 301                 return;
 302
 303         // if we are closing the buffer, use the first buffer as current
 304         if (!buffer_)
 305                 buffer_ = bufferlist.first();
 306
 307         if (buffer_) {
 308                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 309                 connectBuffer(*buffer_);
 310
 311                 // If we don't have a text object for this, we make one
 312                 if (bv_->text == 0)
 313                         resizeCurrentBuffer();
 314
 315                 // FIXME: needed when ?
 316                 top_y(screen().topCursorVisible(bv_->text));
 317
 318                 // Buffer-dependent dialogs should be updated or
 319                 // hidden. This should go here because some dialogs (eg ToC)
 320                 // require bv_->text.
 321                 owner_->getDialogs().updateBufferDependent(true);
 322         } else {
 323                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 324                 owner_->getDialogs().hideBufferDependent();
 325         }
 326
 327         update();
 328         updateScrollbar();
 329         owner_->updateMenubar();
 330         owner_->updateToolbar();
 331         owner_->updateLayoutChoice();
 332         owner_->updateWindowTitle();
 333
 334         // Don't forget to update the Layout
 335         if (buffer_)
 336                 owner_->setLayout(bv_->text->cursorPar()->layout()->name());
 337
 338         if (lyx::graphics::Previews::activated() && buffer_)
 339                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 340 }
 341
 342
 343 bool BufferView::Pimpl::fitCursor()
 344 {
 345         lyxerr << "BufferView::Pimpl::fitCursor." << endl;
 346         bool ret;
 347
 348 #ifndef LOCK
 349         UpdatableInset * tli =
 350                 static_cast<UpdatableInset *>(cursor_.innerInset());
 351         if (tli) {
 352                 tli->fitInsetCursor(bv_);
 353                 ret = true;
 354         } else {
 355                 ret = screen().fitCursor(bv_->text, bv_);
 356         }
 357 #else
 358         ret = screen().fitCursor(bv_->text, bv_);
 359 #endif
 360
 361         //dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
 362
 363         // We need to always update, in case we did a
 364         // paste and we stayed anchored to a row, but
 365         // the actual height of the doc changed ...
 366         updateScrollbar();
 367         return ret;
 368 }
 369
 370
 371 void BufferView::Pimpl::redoCurrentBuffer()
 372 {
 373         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 374         if (buffer_ && bv_->text) {
 375                 resizeCurrentBuffer();
 376                 updateScrollbar();
 377                 owner_->updateLayoutChoice();
 378                 update();
 379         }
 380 }
 381
 382
 383 void BufferView::Pimpl::resizeCurrentBuffer()
 384 {
 385         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 386
 387         int par = -1;
 388         int selstartpar = -1;
 389         int selendpar = -1;
 390
 391         pos_type pos = 0;
 392         pos_type selstartpos = 0;
 393         pos_type selendpos = 0;
 394         bool selection = false;
 395         bool mark_set  = false;
 396
 397         owner_->busy(true);
 398
 399         owner_->message(_("Formatting document..."));
 400
 401         if (bv_->text) {
 402                 par = bv_->text->cursor.par();
 403                 pos = bv_->text->cursor.pos();
 404                 selstartpar = bv_->text->selection.start.par();
 405                 selstartpos = bv_->text->selection.start.pos();
 406                 selendpar = bv_->text->selection.end.par();
 407                 selendpos = bv_->text->selection.end.pos();
 408                 selection = bv_->text->selection.set();
 409                 mark_set = bv_->text->selection.mark();
 410                 bv_->text->fullRebreak();
 411                 update();
 412         } else {
 413                 bv_->text = new LyXText(bv_, 0, false, bv_->buffer()->paragraphs());
 414                 bv_->text->init(bv_);
 415         }
 416
 417         if (par != -1) {
 418                 bv_->text->selection.set(true);
 419                 // At this point just to avoid the Delete-Empty-Paragraph-
 420                 // Mechanism when setting the cursor.
 421                 bv_->text->selection.mark(mark_set);
 422                 if (selection) {
 423                         bv_->text->setCursor(selstartpar, selstartpos);
 424                         bv_->text->selection.cursor = bv_->text->cursor;
 425                         bv_->text->setCursor(selendpar, selendpos);
 426                         bv_->text->setSelection();
 427                         bv_->text->setCursor(par, pos);
 428                 } else {
 429                         bv_->text->setCursor(par, pos);
 430                         bv_->text->selection.cursor = bv_->text->cursor;
 431                         bv_->text->selection.set(false);
 432                 }
 433         }
 434
 435         top_y(screen().topCursorVisible(bv_->text));
 436
 437         switchKeyMap();
 438         owner_->busy(false);
 439
 440         // reset the "Formatting..." message
 441         owner_->clearMessage();
 442
 443         updateScrollbar();
 444 }
 445
 446
 447 void BufferView::Pimpl::updateScrollbar()
 448 {
 449         if (!bv_->text) {
 450                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 451                 workarea().setScrollbarParams(0, 0, 0);
 452                 return;
 453         }
 454
 455         LyXText const & t = *bv_->text;
 456
 457         lyxerr[Debug::GUI] << "Updating scrollbar: h " << t.height << ", top_y() "
 458                 << top_y() << ", default height " << defaultRowHeight() << endl;
 459
 460         workarea().setScrollbarParams(t.height, top_y(), defaultRowHeight());
 461 }
 462
 463
 464 void BufferView::Pimpl::scrollDocView(int value)
 465 {
 466         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 467
 468         if (!buffer_)
 469                 return;
 470
 471         screen().hideCursor();
 472
 473         top_y(value);
 474         screen().redraw(*bv_);
 475
 476         if (!lyxrc.cursor_follows_scrollbar)
 477                 return;
 478
 479         int const height = defaultRowHeight();
 480         int const first = top_y() + height;
 481         int const last = top_y() + workarea().workHeight() - height;
 482
 483         LyXText * text = bv_->text;
 484         if (text->cursor.y() < first)
 485                 text->setCursorFromCoordinates(0, first);
 486         else if (text->cursor.y() > last)
 487                 text->setCursorFromCoordinates(0, last);
 488
 489         owner_->updateLayoutChoice();
 490 }
 491
 492
 493 void BufferView::Pimpl::scroll(int lines)
 494 {
 495         if (!buffer_)
 496                 return;
 497
 498         LyXText const * t = bv_->text;
 499         int const line_height = defaultRowHeight();
 500
 501         // The new absolute coordinate
 502         int new_top_y = top_y() + lines * line_height;
 503
 504         // Restrict to a valid value
 505         new_top_y = std::min(t->height - 4 * line_height, new_top_y);
 506         new_top_y = std::max(0, new_top_y);
 507
 508         scrollDocView(new_top_y);
 509
 510         // Update the scrollbar.
 511         workarea().setScrollbarParams(t->height, top_y(), defaultRowHeight());
 512 }
 513
 514
 515 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 516                                          key_modifier::state state)
 517 {
 518         bv_->owner()->getLyXFunc().processKeySym(key, state);
 519
 520         /* This is perhaps a bit of a hack. When we move
 521          * around, or type, it's nice to be able to see
 522          * the cursor immediately after the keypress. So
 523          * we reset the toggle timeout and force the visibility
 524          * of the cursor. Note we cannot do this inside
 525          * dispatch() itself, because that's called recursively.
 526          */
 527         if (available()) {
 528                 cursor_timeout.restart();
 529                 screen().showCursor(*bv_);
 530         }
 531 }
 532
 533
 534 void BufferView::Pimpl::selectionRequested()
 535 {
 536         static string sel;
 537
 538         if (!available())
 539                 return;
 540
 541         LyXText * text = bv_->getLyXText();
 542
 543         if (text->selection.set() &&
 544                 (!bv_->text->xsel_cache.set() ||
 545                  text->selection.start != bv_->text->xsel_cache.start ||
 546                  text->selection.end != bv_->text->xsel_cache.end))
 547         {
 548                 bv_->text->xsel_cache = text->selection;
 549                 sel = text->selectionAsString(*bv_->buffer(), false);
 550         } else if (!text->selection.set()) {
 551                 sel = string();
 552                 bv_->text->xsel_cache.set(false);
 553         }
 554         if (!sel.empty()) {
 555                 workarea().putClipboard(sel);
 556         }
 557 }
 558
 559
 560 void BufferView::Pimpl::selectionLost()
 561 {
 562         if (available()) {
 563                 screen().hideCursor();
 564                 bv_->getLyXText()->clearSelection();
 565                 bv_->text->xsel_cache.set(false);
 566         }
 567 }
 568
 569
 570 void BufferView::Pimpl::workAreaResize()
 571 {
 572         static int work_area_width;
 573         static int work_area_height;
 574
 575         bool const widthChange = workarea().workWidth() != work_area_width;
 576         bool const heightChange = workarea().workHeight() != work_area_height;
 577
 578         // update from work area
 579         work_area_width = workarea().workWidth();
 580         work_area_height = workarea().workHeight();
 581
 582         if (buffer_ != 0) {
 583                 if (widthChange) {
 584                         // The visible LyXView need a resize
 585                         resizeCurrentBuffer();
 586                 }
 587         }
 588
 589         if (widthChange || heightChange)
 590                 update();
 591
 592         // always make sure that the scrollbar is sane.
 593         updateScrollbar();
 594         owner_->updateLayoutChoice();
 595 }
 596
 597
 598 void BufferView::Pimpl::update()
 599 {
 600         //lyxerr << "BufferView::update()" << endl;
 601         // fix cursor coordinate cache in case something went wrong
 602
 603         // check needed to survive LyX startup
 604         if (bv_->getLyXText()) {
 605                 bv_->getLyXText()->redoCursor();
 606
 607                 // update all 'visible' paragraphs
 608                 ParagraphList::iterator beg;
 609                 ParagraphList::iterator end;
 610                 getParsInRange(buffer_->paragraphs(),
 611                                top_y(), top_y() + workarea().workHeight(),
 612                                beg, end);
 613                 bv_->text->redoParagraphs(beg, end);
 614
 615                 updateScrollbar();
 616         }
 617         screen().redraw(*bv_);
 618 }
 619
 620
 621 // Callback for cursor timer
 622 void BufferView::Pimpl::cursorToggle()
 623 {
 624         if (!buffer_) {
 625                 cursor_timeout.restart();
 626                 return;
 627         }
 628
 629         screen().toggleCursor(*bv_);
 630         cursor_timeout.restart();
 631 }
 632
 633
 634 bool BufferView::Pimpl::available() const
 635 {
 636         return buffer_ && bv_->text;
 637 }
 638
 639
 640 Change const BufferView::Pimpl::getCurrentChange()
 641 {
 642         if (!bv_->buffer()->params().tracking_changes)
 643                 return Change(Change::UNCHANGED);
 644
 645         LyXText * text = bv_->getLyXText();
 646
 647         if (!text->selection.set())
 648                 return Change(Change::UNCHANGED);
 649
 650         return text->getPar(text->selection.start)
 651                 ->lookupChangeFull(text->selection.start.pos());
 652 }
 653
 654
 655 void BufferView::Pimpl::savePosition(unsigned int i)
 656 {
 657         if (i >= saved_positions_num)
 658                 return;
 659         saved_positions[i] = Position(buffer_->fileName(),
 660                                       bv_->text->cursorPar()->id(),
 661                                       bv_->text->cursor.pos());
 662         if (i > 0)
 663                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 664 }
 665
 666
 667 void BufferView::Pimpl::restorePosition(unsigned int i)
 668 {
 669         if (i >= saved_positions_num)
 670                 return;
 671
 672         string const fname = saved_positions[i].filename;
 673
 674         bv_->text->clearSelection();
 675
 676         if (fname != buffer_->fileName()) {
 677                 Buffer * b = 0;
 678                 if (bufferlist.exists(fname))
 679                         b = bufferlist.getBuffer(fname);
 680                 else {
 681                         b = bufferlist.newBuffer(fname);
 682                         ::loadLyXFile(b, fname); // don't ask, just load it
 683                 }
 684                 if (b)
 685                         buffer(b);
 686         }
 687
 688         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 689         if (par == buffer_->par_iterator_end())
 690                 return;
 691
 692         bv_->text->setCursor(par.pit(),
 693                              min(par->size(), saved_positions[i].par_pos));
 694
 695         update();
 696         if (i > 0)
 697                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 698 }
 699
 700
 701 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 702 {
 703         return i < saved_positions_num && !saved_positions[i].filename.empty();
 704 }
 705
 706
 707 void BufferView::Pimpl::switchKeyMap()
 708 {
 709         if (!lyxrc.rtl_support)
 710                 return;
 711
 712         Intl & intl = owner_->getIntl();
 713         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 714                 if (intl.keymap == Intl::PRIMARY)
 715                         intl.KeyMapSec();
 716         } else {
 717                 if (intl.keymap == Intl::SECONDARY)
 718                         intl.KeyMapPrim();
 719         }
 720 }
 721
 722
 723 void BufferView::Pimpl::center()
 724 {
 725         LyXText * text = bv_->text;
 726
 727         text->clearSelection();
 728         int const half_height = workarea().workHeight() / 2;
 729         int new_y = std::max(0, text->cursor.y() - half_height);
 730
 731         // FIXME: look at this comment again ...
 732         // This updates top_y() but means the fitCursor() call
 733         // from the update(FITCUR) doesn't realise that we might
 734         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 735         // the scrollbar to be updated as it should, so we have
 736         // to do it manually. Any operation that does a center()
 737         // and also might have moved top_y() must make sure to call
 738         // updateScrollbar() currently. Never mind that this is a
 739         // pretty obfuscated way of updating t->top_y()
 740         top_y(new_y);
 741         update();
 742 }
 743
 744
 745 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 746 {
 747         workarea().putClipboard(stuff);
 748 }
 749
 750
 751 InsetOld * BufferView::Pimpl::getInsetByCode(InsetOld::Code code)
 752 {
 753 #if 0
 754         LyXCursor cursor = bv_->getLyXText()->cursor;
 755         Buffer::inset_iterator it =
 756                 find_if(Buffer::inset_iterator(
 757                         cursorPar(), cursor.pos()),
 758                         buffer_->inset_iterator_end(),
 759                         lyx::compare_memfun(&Inset::lyxCode, code));
 760         return it != buffer_->inset_iterator_end() ? (*it) : 0;
 761 #else
 762         // Ok, this is a little bit too brute force but it
 763         // should work for now. Better infrastructure is coming. (Lgb)
 764
 765         Buffer * b = bv_->buffer();
 766         LyXText * text =  bv_->getLyXText();
 767
 768         Buffer::inset_iterator beg = b->inset_iterator_begin();
 769         Buffer::inset_iterator end = b->inset_iterator_end();
 770
 771         bool cursorPar_seen = false;
 772
 773         for (; beg != end; ++beg) {
 774                 if (beg.getPar() == text->cursorPar()) {
 775                         cursorPar_seen = true;
 776                 }
 777                 if (cursorPar_seen) {
 778                         if (beg.getPar() == text->cursorPar()
 779                             && beg.getPos() >= text->cursor.pos()) {
 780                                 break;
 781                         } else if (beg.getPar() != text->cursorPar()) {
 782                                 break;
 783                         }
 784                 }
 785
 786         }
 787         if (beg != end) {
 788                 // Now find the first inset that matches code.
 789                 for (; beg != end; ++beg) {
 790                         if (beg->lyxCode() == code) {
 791                                 return &(*beg);
 792                         }
 793                 }
 794         }
 795         return 0;
 796 #endif
 797 }
 798
 799
 800 void BufferView::Pimpl::MenuInsertLyXFile(string const & filen)
 801 {
 802         string filename = filen;
 803
 804         if (filename.empty()) {
 805                 // Launch a file browser
 806                 string initpath = lyxrc.document_path;
 807
 808                 if (available()) {
 809                         string const trypath = owner_->buffer()->filePath();
 810                         // If directory is writeable, use this as default.
 811                         if (IsDirWriteable(trypath))
 812                                 initpath = trypath;
 813                 }
 814
 815                 FileDialog fileDlg(_("Select LyX document to insert"),
 816                         LFUN_FILE_INSERT,
 817                         make_pair(string(_("Documents|#o#O")),
 818                                   string(lyxrc.document_path)),
 819                         make_pair(string(_("Examples|#E#e")),
 820                                   string(AddPath(system_lyxdir(), "examples"))));
 821
 822                 FileDialog::Result result =
 823                         fileDlg.open(initpath,
 824                                        _("*.lyx| LyX Documents (*.lyx)"));
 825
 826                 if (result.first == FileDialog::Later)
 827                         return;
 828
 829                 filename = result.second;
 830
 831                 // check selected filename
 832                 if (filename.empty()) {
 833                         owner_->message(_("Canceled."));
 834                         return;
 835                 }
 836         }
 837
 838         // get absolute path of file and add ".lyx" to the filename if
 839         // necessary
 840         filename = FileSearch(string(), filename, "lyx");
 841
 842         string const disp_fn = MakeDisplayPath(filename);
 843         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 844         if (bv_->insertLyXFile(filename))
 845                 owner_->message(bformat(_("Document %1$s inserted."),
 846                                         disp_fn));
 847         else
 848                 owner_->message(bformat(_("Could not insert document %1$s"),
 849                                         disp_fn));
 850 }
 851
 852
 853 void BufferView::Pimpl::trackChanges()
 854 {
 855         Buffer * buf(bv_->buffer());
 856         bool const tracking(buf->params().tracking_changes);
 857
 858         if (!tracking) {
 859                 ParIterator const end = buf->par_iterator_end();
 860                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 861                         it->trackChanges();
 862                 buf->params().tracking_changes = true;
 863
 864                 // we cannot allow undos beyond the freeze point
 865                 buf->undostack().clear();
 866         } else {
 867                 update();
 868                 bv_->text->setCursor(0, 0);
 869 #warning changes FIXME
 870                 //moveCursorUpdate(false);
 871
 872                 bool found = lyx::find::findNextChange(bv_);
 873                 if (found) {
 874                         owner_->getDialogs().show("changes");
 875                         return;
 876                 }
 877
 878                 ParIterator const end = buf->par_iterator_end();
 879                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 880                         it->untrackChanges();
 881                 buf->params().tracking_changes = false;
 882         }
 883
 884         buf->redostack().clear();
 885 }
 886
 887 #warning remove me
 888 LCursor theTempCursor(0);
 889
 890 namespace {
 891
 892         InsetOld * insetFromCoords(BufferView * bv, int x, int y)
 893         {
 894                 LyXText * text = bv->text;
 895                 InsetOld * inset = 0;
 896                 theTempCursor = LCursor(bv);
 897                 while (true) {
 898                         InsetOld * inset_hit = text->checkInsetHit(x, y);
 899                         if (!inset_hit)
 900                                 break;
 901                         inset = inset_hit;
 902                         if (!inset_hit->descendable())
 903                                 break;
 904                         text = inset_hit->getText(0);
 905                         lyxerr << "Hit inset: " << inset << " at x: " << x
 906                                 << " text: " << text << " y: " << y << endl;
 907                         theTempCursor.push(static_cast<UpdatableInset*>(inset));
 908                 }
 909                 return inset;
 910         }
 911
 912 }
 913
 914
 915 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd)
 916 {
 917         switch (cmd.action) {
 918         case LFUN_MOUSE_PRESS:
 919         case LFUN_MOUSE_MOTION:
 920         case LFUN_MOUSE_RELEASE:
 921         case LFUN_MOUSE_DOUBLE:
 922         case LFUN_MOUSE_TRIPLE: {
 923                 // We pass those directly to the Bufferview, since
 924                 // otherwise selection handling breaks down
 925
 926                 // Doesn't go through lyxfunc, so we need to update
 927                 // the layout choice etc. ourselves
 928
 929                 // e.g. Qt mouse press when no buffer
 930                 if (!available())
 931                         return false;
 932
 933                 screen().hideCursor();
 934
 935                 // either the inset under the cursor or the surrounding LyXText will
 936                 // handle this event.
 937
 938                 // built temporary path to inset
 939                 InsetOld * inset = insetFromCoords(bv_, cmd.x, cmd.y);
 940                 FuncRequest cmd1(cmd, bv_);
 941                 DispatchResult res;
 942
 943                 // try to dispatch to that inset
 944                 if (inset) {
 945                         FuncRequest cmd2 = cmd1;
 946                         lyxerr << "dispatching action " << cmd2.action
 947                                 << " to inset " << inset << endl;
 948                         cmd2.x -= inset->x();
 949                         cmd2.y -= inset->y();
 950                         res = inset->dispatch(cmd2);
 951                         if (res.update())
 952                                 bv_->update();
 953                         res.update(false);
 954                         switch (res.val()) {
 955                                 case FINISHED:
 956                                 case FINISHED_RIGHT:
 957                                 case FINISHED_UP:
 958                                 case FINISHED_DOWN:
 959                                         theTempCursor.pop();
 960                                         bv_->cursor() = theTempCursor;
 961                                         bv_->cursor().innerText()->setCursorFromCoordinates(cmd.x, cmd.y);
 962                                         return true;
 963                                 default:
 964                                         lyxerr << "not dispatched by inner inset val: " << res.val() << endl;
 965                                         break;
 966                         }
 967                 }
 968
 969                 // otherwise set cursor to surrounding LyXText
 970                 if (!res.dispatched()) {
 971                         lyxerr << "cursor is: " << bv_->cursor() << endl;
 972                         lyxerr << "dispatching " << cmd1 << " to surrounding LyXText "
 973                                 << bv_->cursor().innerText() << endl;
 974                         theTempCursor.innerText()->dispatch(cmd1);
 975                         cursor_ = theTempCursor;
 976                         //return DispatchResult(true, true);
 977                 }
 978
 979                 // see workAreaKeyPress
 980                 cursor_timeout.restart();
 981                 screen().showCursor(*bv_);
 982
 983                 // FIXME: we should skip these when selecting
 984                 owner_->updateLayoutChoice();
 985                 owner_->updateToolbar();
 986 //              fitCursor();
 987
 988                 // slight hack: this is only called currently when we
 989                 // clicked somewhere, so we force through the display
 990                 // of the new status here.
 991                 owner_->clearMessage();
 992                 return true;
 993         }
 994
 995         default:
 996                 owner_->dispatch(cmd);
 997                 return true;
 998         }
 999 }
1000
1001
1002 bool BufferView::Pimpl::dispatch(FuncRequest const & ev_in)
1003 {
1004         // Make sure that the cached BufferView is correct.
1005         FuncRequest ev = ev_in;
1006         ev.setView(bv_);
1007
1008         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
1009                 << " action[" << ev.action << ']'
1010                 << " arg[" << ev.argument << ']'
1011                 << " x[" << ev.x << ']'
1012                 << " y[" << ev.y << ']'
1013                 << " button[" << ev.button() << ']'
1014                 << endl;
1015
1016         LyXTextClass const & tclass = buffer_->params().getLyXTextClass();
1017
1018         switch (ev.action) {
1019
1020         case LFUN_SCROLL_INSET:
1021                 // this is not handled here as this function is only active
1022                 // if we have a locking_inset and that one is (or contains)
1023                 // a tabular-inset
1024                 break;
1025
1026         case LFUN_FILE_INSERT:
1027                 MenuInsertLyXFile(ev.argument);
1028                 break;
1029
1030         case LFUN_FILE_INSERT_ASCII_PARA:
1031                 InsertAsciiFile(bv_, ev.argument, true);
1032                 break;
1033
1034         case LFUN_FILE_INSERT_ASCII:
1035                 InsertAsciiFile(bv_, ev.argument, false);
1036                 break;
1037
1038         case LFUN_FONT_STATE:
1039                 owner_->getLyXFunc().setMessage(currentState(bv_));
1040                 break;
1041
1042         case LFUN_INSERT_LABEL: {
1043                 // Try and generate a valid label
1044                 string const contents = ev.argument.empty() ?
1045                         getPossibleLabel(*bv_) : ev.argument;
1046                 InsetCommandParams icp("label", contents);
1047                 string data = InsetCommandMailer::params2string("label", icp);
1048                 owner_->getDialogs().show("label", data, 0);
1049                 break;
1050         }
1051
1052         case LFUN_BOOKMARK_SAVE:
1053                 savePosition(strToUnsignedInt(ev.argument));
1054                 break;
1055
1056         case LFUN_BOOKMARK_GOTO:
1057                 restorePosition(strToUnsignedInt(ev.argument));
1058                 break;
1059
1060         case LFUN_REF_GOTO: {
1061                 string label = ev.argument;
1062                 if (label.empty()) {
1063                         InsetRef * inset =
1064                                 static_cast<InsetRef*>(getInsetByCode(InsetOld::REF_CODE));
1065                         if (inset) {
1066                                 label = inset->getContents();
1067                                 savePosition(0);
1068                         }
1069                 }
1070
1071                 if (!label.empty())
1072                         bv_->gotoLabel(label);
1073         }
1074         break;
1075
1076         // --- accented characters ---------------------------
1077
1078         case LFUN_UMLAUT:
1079         case LFUN_CIRCUMFLEX:
1080         case LFUN_GRAVE:
1081         case LFUN_ACUTE:
1082         case LFUN_TILDE:
1083         case LFUN_CEDILLA:
1084         case LFUN_MACRON:
1085         case LFUN_DOT:
1086         case LFUN_UNDERDOT:
1087         case LFUN_UNDERBAR:
1088         case LFUN_CARON:
1089         case LFUN_SPECIAL_CARON:
1090         case LFUN_BREVE:
1091         case LFUN_TIE:
1092         case LFUN_HUNG_UMLAUT:
1093         case LFUN_CIRCLE:
1094         case LFUN_OGONEK:
1095                 if (ev.argument.empty()) {
1096                         // As always...
1097                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1098                 } else {
1099                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1100                         owner_->getIntl().getTransManager()
1101                                 .TranslateAndInsert(ev.argument[0], bv_->getLyXText());
1102                         update();
1103                 }
1104                 break;
1105
1106         case LFUN_MATH_MACRO:
1107         case LFUN_MATH_DELIM:
1108         case LFUN_INSERT_MATRIX:
1109         case LFUN_INSERT_MATH:
1110         case LFUN_MATH_IMPORT_SELECTION: // Imports LaTeX from the X selection
1111         case LFUN_MATH_DISPLAY:          // Open or create a displayed math inset
1112         case LFUN_MATH_MODE:             // Open or create an inlined math inset
1113                 mathDispatch(ev);
1114                 break;
1115
1116         case LFUN_INSET_APPLY: {
1117                 string const name = ev.getArg(0);
1118
1119                 InsetBase * inset = owner_->getDialogs().getOpenInset(name);
1120                 if (inset) {
1121                         // This works both for 'original' and 'mathed' insets.
1122                         // Note that the localDispatch performs update also.
1123                         FuncRequest fr(bv_, LFUN_INSET_MODIFY, ev.argument);
1124                         inset->dispatch(fr);
1125                 } else {
1126                         FuncRequest fr(bv_, LFUN_INSET_INSERT, ev.argument);
1127                         dispatch(fr);
1128                 }
1129         }
1130         break;
1131
1132         case LFUN_INSET_INSERT: {
1133                 InsetOld * inset = createInset(ev);
1134                 if (!inset || !insertInset(inset))
1135                         delete inset;
1136                 break;
1137         }
1138
1139         case LFUN_FLOAT_LIST:
1140                 if (tclass.floats().typeExist(ev.argument)) {
1141                         InsetOld * inset = new InsetFloatList(ev.argument);
1142                         if (!insertInset(inset, tclass.defaultLayoutName()))
1143                                 delete inset;
1144                 } else {
1145                         lyxerr << "Non-existent float type: "
1146                                << ev.argument << endl;
1147                 }
1148                 break;
1149
1150         case LFUN_LAYOUT_PARAGRAPH: {
1151                 string data;
1152                 params2string(*bv_->getLyXText()->cursorPar(), data);
1153                 data = "show\n" + data;
1154                 bv_->owner()->getDialogs().show("paragraph", data);
1155                 break;
1156         }
1157
1158         case LFUN_PARAGRAPH_UPDATE:
1159                 updateParagraphDialog();
1160                 break;
1161
1162         case LFUN_PARAGRAPH_APPLY:
1163                 setParagraphParams(*bv_, ev.argument);
1164                 break;
1165
1166         case LFUN_THESAURUS_ENTRY: {
1167                 string arg = ev.argument;
1168
1169                 if (arg.empty()) {
1170                         arg = bv_->getLyXText()->selectionAsString(*buffer_,
1171                                                                    false);
1172
1173                         // FIXME
1174                         if (arg.size() > 100 || arg.empty()) {
1175                                 // Get word or selection
1176                                 bv_->getLyXText()->selectWordWhenUnderCursor(lyx::WHOLE_WORD);
1177                                 arg = bv_->getLyXText()->selectionAsString(*buffer_, false);
1178                                 // FIXME: where is getLyXText()->unselect(bv_) ?
1179                         }
1180                 }
1181
1182                 bv_->owner()->getDialogs().show("thesaurus", arg);
1183                 break;
1184         }
1185
1186         case LFUN_TRACK_CHANGES:
1187                 trackChanges();
1188                 break;
1189
1190         case LFUN_MERGE_CHANGES:
1191                 owner_->getDialogs().show("changes");
1192                 break;
1193
1194         case LFUN_ACCEPT_ALL_CHANGES: {
1195                 bv_->text->setCursor(0, 0);
1196 #warning FIXME changes
1197                 //moveCursorUpdate(false);
1198
1199                 while (lyx::find::findNextChange(bv_))
1200                         bv_->getLyXText()->acceptChange();
1201
1202                 update();
1203                 break;
1204         }
1205
1206         case LFUN_REJECT_ALL_CHANGES: {
1207                 bv_->text->setCursor(0, 0);
1208 #warning FIXME changes
1209                 //moveCursorUpdate(false);
1210
1211                 while (lyx::find::findNextChange(bv_))
1212                         bv_->getLyXText()->rejectChange();
1213
1214                 update();
1215                 break;
1216         }
1217
1218         case LFUN_ACCEPT_CHANGE: {
1219                 bv_->getLyXText()->acceptChange();
1220                 update();
1221                 break;
1222         }
1223
1224         case LFUN_REJECT_CHANGE: {
1225                 bv_->getLyXText()->rejectChange();
1226                 update();
1227                 break;
1228         }
1229
1230         case LFUN_UNKNOWN_ACTION:
1231                 ev.errorMessage(N_("Unknown function!"));
1232                 break;
1233
1234         default:
1235                 return bv_->getLyXText()->dispatch(FuncRequest(ev, bv_)).dispatched();
1236         } // end of switch
1237
1238         return true;
1239 }
1240
1241
1242 bool BufferView::Pimpl::insertInset(InsetOld * inset, string const & lout)
1243 {
1244 #ifdef LOCK
1245         // if we are in a locking inset we should try to insert the
1246         // inset there otherwise this is a illegal function now
1247         if (bv_->theLockingInset()) {
1248                 if (bv_->theLockingInset()->insetAllowed(inset))
1249                         return bv_->theLockingInset()->insertInset(bv_, inset);
1250                 return false;
1251         }
1252 #endif
1253
1254         // not quite sure if we want this...
1255         bv_->text->recUndo(bv_->text->cursor.par());
1256         freezeUndo();
1257
1258         bv_->text->clearSelection();
1259         if (!lout.empty()) {
1260                 bv_->text->breakParagraph(bv_->buffer()->paragraphs());
1261
1262                 if (!bv_->text->cursorPar()->empty()) {
1263                         bv_->text->cursorLeft(bv_);
1264                         bv_->text->breakParagraph(bv_->buffer()->paragraphs());
1265                 }
1266
1267                 string lres = lout;
1268                 LyXTextClass const & tclass = buffer_->params().getLyXTextClass();
1269                 bool hasLayout = tclass.hasLayout(lres);
1270
1271                 bv_->text->setLayout(hasLayout ? lres : tclass.defaultLayoutName());
1272
1273                 bv_->text->setParagraph(
1274                                    VSpace(VSpace::NONE), VSpace(VSpace::NONE),
1275                                    Spacing(),
1276                                    LYX_ALIGN_LAYOUT,
1277                                    string(),
1278                                    0);
1279         }
1280
1281         bv_->cursor().innerText()->insertInset(inset);
1282         update();
1283
1284         unFreezeUndo();
1285         return true;
1286 }
1287
1288
1289 bool BufferView::Pimpl::ChangeInsets(InsetOld::Code code,
1290                                      string const & from, string const & to)
1291 {
1292         bool need_update = false;
1293         LyXCursor cursor = bv_->text->cursor;
1294         LyXCursor tmpcursor = cursor;
1295         cursor.par(tmpcursor.par());
1296         cursor.pos(tmpcursor.pos());
1297
1298         ParIterator end = bv_->buffer()->par_iterator_end();
1299         for (ParIterator it = bv_->buffer()->par_iterator_begin();
1300              it != end; ++it) {
1301                 bool changed_inset = false;
1302                 for (InsetList::iterator it2 = it->insetlist.begin();
1303                      it2 != it->insetlist.end(); ++it2) {
1304                         if (it2->inset->lyxCode() == code) {
1305                                 InsetCommand * inset = static_cast<InsetCommand *>(it2->inset);
1306                                 if (inset->getContents() == from) {
1307                                         inset->setContents(to);
1308                                         changed_inset = true;
1309                                 }
1310                         }
1311                 }
1312                 if (changed_inset) {
1313                         need_update = true;
1314
1315                         // FIXME
1316
1317                         // The test it.size()==1 was needed to prevent crashes.
1318                         // How to set the cursor correctly when it.size()>1 ??
1319                         if (it.size() == 1) {
1320                                 bv_->text->setCursorIntern(bv_->text->parOffset(it.pit()), 0);
1321                                 bv_->text->redoParagraph(bv_->text->cursorPar());
1322                         }
1323                 }
1324         }
1325         bv_->text->setCursorIntern(cursor.par(), cursor.pos());
1326         return need_update;
1327 }
1328
1329
1330 void BufferView::Pimpl::updateParagraphDialog()
1331 {
1332         if (!bv_->owner()->getDialogs().visible("paragraph"))
1333                 return;
1334         Paragraph const & par = *bv_->getLyXText()->cursorPar();
1335         string data;
1336         params2string(par, data);
1337
1338         // Will the paragraph accept changes from the dialog?
1339         InsetOld * const inset = par.inInset();
1340         bool const accept =
1341                 !(inset && inset->forceDefaultParagraphs(inset));
1342
1343         data = "update " + tostr(accept) + '\n' + data;
1344         bv_->owner()->getDialogs().update("paragraph", data);
1345 }
1346
1347