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/globbing.h"
  66 #include "support/path_defines.h"
  67 #include "support/tostr.h"
  68
  69 #include <boost/bind.hpp>
  70
  71 using bv_funcs::currentState;
  72
  73 using lyx::pos_type;
  74
  75 using lyx::support::AddPath;
  76 using lyx::support::bformat;
  77 using lyx::support::FileFilterList;
  78 using lyx::support::FileSearch;
  79 using lyx::support::IsDirWriteable;
  80 using lyx::support::MakeDisplayPath;
  81 using lyx::support::strToUnsignedInt;
  82 using lyx::support::system_lyxdir;
  83
  84 using std::endl;
  85 using std::make_pair;
  86 using std::min;
  87 using std::string;
  88
  89
  90 extern BufferList bufferlist;
  91
  92
  93 namespace {
  94
  95 unsigned int const saved_positions_num = 20;
  96
  97 // All the below connection objects are needed because of a bug in some
  98 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
  99 // to these connections we avoid a segfault upon startup, and also at exit.
 100 // (Lgb)
 101
 102 boost::signals::connection dispatchcon;
 103 boost::signals::connection timecon;
 104 boost::signals::connection doccon;
 105 boost::signals::connection resizecon;
 106 boost::signals::connection kpresscon;
 107 boost::signals::connection selectioncon;
 108 boost::signals::connection lostcon;
 109
 110
 111 } // anon namespace
 112
 113
 114 BufferView::Pimpl::Pimpl(BufferView * bv, LyXView * owner,
 115              int xpos, int ypos, int width, int height)
 116         : bv_(bv), owner_(owner), buffer_(0), cursor_timeout(400),
 117           using_xterm_cursor(false), cursor_(bv)
 118 {
 119         xsel_cache_.set = false;
 120
 121         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 122         screen_.reset(LyXScreenFactory::create(workarea()));
 123
 124         // Setup the signals
 125         doccon = workarea().scrollDocView
 126                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 127         resizecon = workarea().workAreaResize
 128                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 129         dispatchcon = workarea().dispatch
 130                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 131         kpresscon = workarea().workAreaKeyPress
 132                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 133         selectioncon = workarea().selectionRequested
 134                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 135         lostcon = workarea().selectionLost
 136                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 137
 138         timecon = cursor_timeout.timeout
 139                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 140         cursor_timeout.start();
 141         saved_positions.resize(saved_positions_num);
 142 }
 143
 144
 145 void BufferView::Pimpl::addError(ErrorItem const & ei)
 146 {
 147         errorlist_.push_back(ei);
 148 }
 149
 150
 151 void BufferView::Pimpl::showReadonly(bool)
 152 {
 153         owner_->updateWindowTitle();
 154         owner_->getDialogs().updateBufferDependent(false);
 155 }
 156
 157
 158 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 159 {
 160         if (errorConnection_.connected())
 161                 disconnectBuffer();
 162
 163         errorConnection_ = buf.error.connect(boost::bind(&BufferView::Pimpl::addError, this, _1));
 164         messageConnection_ = buf.message.connect(boost::bind(&LyXView::message, owner_, _1));
 165         busyConnection_ = buf.busy.connect(boost::bind(&LyXView::busy, owner_, _1));
 166         titleConnection_ = buf.updateTitles.connect(boost::bind(&LyXView::updateWindowTitle, owner_));
 167         timerConnection_ = buf.resetAutosaveTimers.connect(boost::bind(&LyXView::resetAutosaveTimer, owner_));
 168         readonlyConnection_ = buf.readonly.connect(boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 169         closingConnection_ = buf.closing.connect(boost::bind(&BufferView::Pimpl::buffer, this, (Buffer *)0));
 170 }
 171
 172
 173 void BufferView::Pimpl::disconnectBuffer()
 174 {
 175         errorConnection_.disconnect();
 176         messageConnection_.disconnect();
 177         busyConnection_.disconnect();
 178         titleConnection_.disconnect();
 179         timerConnection_.disconnect();
 180         readonlyConnection_.disconnect();
 181         closingConnection_.disconnect();
 182 }
 183
 184
 185 bool BufferView::Pimpl::newFile(string const & filename,
 186                                 string const & tname,
 187                                 bool isNamed)
 188 {
 189         Buffer * b = ::newFile(filename, tname, isNamed);
 190         buffer(b);
 191         return true;
 192 }
 193
 194
 195 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 196 {
 197         // get absolute path of file and add ".lyx" to the filename if
 198         // necessary
 199         string s = FileSearch(string(), filename, "lyx");
 200
 201         bool const found = !s.empty();
 202
 203         if (!found)
 204                 s = filename;
 205
 206         // file already open?
 207         if (bufferlist.exists(s)) {
 208                 string const file = MakeDisplayPath(s, 20);
 209                 string text = bformat(_("The document %1$s is already "
 210                                         "loaded.\n\nDo you want to revert "
 211                                         "to the saved version?"), file);
 212                 int const ret = Alert::prompt(_("Revert to saved document?"),
 213                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 214
 215                 if (ret != 0) {
 216                         buffer(bufferlist.getBuffer(s));
 217                         return true;
 218                 } else {
 219                         // FIXME: should be LFUN_REVERT
 220                         if (!bufferlist.close(bufferlist.getBuffer(s), false))
 221                                 return false;
 222                         // Fall through to new load. (Asger)
 223                 }
 224         }
 225
 226         Buffer * b;
 227
 228         if (found) {
 229                 b = bufferlist.newBuffer(s);
 230                 connectBuffer(*b);
 231                 if (!::loadLyXFile(b, s)) {
 232                         bufferlist.release(b);
 233                         return false;
 234                 }
 235         } else {
 236                 string text = bformat(_("The document %1$s does not yet "
 237                                         "exist.\n\nDo you want to create "
 238                                         "a new document?"), s);
 239                 int const ret = Alert::prompt(_("Create new document?"),
 240                          text, 0, 1, _("&Create"), _("Cancel"));
 241
 242                 if (ret == 0)
 243                         b = ::newFile(s, string(), true);
 244                 else
 245                         return false;
 246         }
 247
 248         buffer(b);
 249         bv_->showErrorList(_("Parse"));
 250
 251         if (tolastfiles)
 252                 LyX::ref().lastfiles().newFile(b->fileName());
 253
 254         return true;
 255 }
 256
 257
 258 WorkArea & BufferView::Pimpl::workarea() const
 259 {
 260         return *workarea_.get();
 261 }
 262
 263
 264 LyXScreen & BufferView::Pimpl::screen() const
 265 {
 266         return *screen_.get();
 267 }
 268
 269
 270 Painter & BufferView::Pimpl::painter() const
 271 {
 272         return workarea().getPainter();
 273 }
 274
 275
 276 void BufferView::Pimpl::top_y(int y)
 277 {
 278         top_y_ = y;
 279 }
 280
 281
 282 int BufferView::Pimpl::top_y() const
 283 {
 284         return top_y_;
 285 }
 286
 287
 288 void BufferView::Pimpl::buffer(Buffer * b)
 289 {
 290         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 291                             << b << ')' << endl;
 292         if (buffer_) {
 293                 disconnectBuffer();
 294                 //delete bv_->text();
 295                 //bv_->setText(0);
 296         }
 297
 298         // set current buffer
 299         buffer_ = b;
 300
 301         top_y_ = 0;
 302
 303         // if we're quitting lyx, don't bother updating stuff
 304         if (quitting)
 305                 return;
 306
 307         // if we are closing the buffer, use the first buffer as current
 308         if (!buffer_)
 309                 buffer_ = bufferlist.first();
 310
 311         if (buffer_) {
 312                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 313                 connectBuffer(*buffer_);
 314
 315                 buffer_->text().init(bv_);
 316                 buffer_->text().textwidth_ = workarea().workWidth();
 317                 buffer_->text().fullRebreak();
 318
 319                 // If we don't have a text object for this, we make one
 320                 if (bv_->text() == 0)
 321                         resizeCurrentBuffer();
 322
 323                 // FIXME: needed when ?
 324                 fitCursor();
 325
 326                 // Buffer-dependent dialogs should be updated or
 327                 // hidden. This should go here because some dialogs (eg ToC)
 328                 // require bv_->text.
 329                 owner_->getDialogs().updateBufferDependent(true);
 330         } else {
 331                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 332                 owner_->getDialogs().hideBufferDependent();
 333         }
 334
 335         update();
 336         updateScrollbar();
 337         owner_->updateMenubar();
 338         owner_->updateToolbar();
 339         owner_->updateLayoutChoice();
 340         owner_->updateWindowTitle();
 341
 342         // Don't forget to update the Layout
 343         if (buffer_)
 344                 owner_->setLayout(bv_->text()->cursorPar()->layout()->name());
 345
 346         if (lyx::graphics::Previews::activated() && buffer_)
 347                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 348 }
 349
 350
 351 bool BufferView::Pimpl::fitCursor()
 352 {
 353         lyxerr << "BufferView::Pimpl::fitCursor." << endl;
 354         if (screen().fitCursor(bv_)) {
 355                 updateScrollbar();
 356                 return true;
 357         }
 358         return false;
 359 }
 360
 361
 362 void BufferView::Pimpl::redoCurrentBuffer()
 363 {
 364         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 365         if (buffer_ && bv_->text()) {
 366                 resizeCurrentBuffer();
 367                 updateScrollbar();
 368                 owner_->updateLayoutChoice();
 369         }
 370 }
 371
 372
 373 void BufferView::Pimpl::resizeCurrentBuffer()
 374 {
 375         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 376
 377         int par = -1;
 378         int selstartpar = -1;
 379         int selendpar = -1;
 380
 381         pos_type pos = 0;
 382         pos_type selstartpos = 0;
 383         pos_type selendpos = 0;
 384         bool sel = false;
 385         bool mark_set  = false;
 386
 387         owner_->busy(true);
 388
 389         owner_->message(_("Formatting document..."));
 390
 391         LyXText * text = bv_->text();
 392         lyxerr << "### resizeCurrentBuffer: text " << text << endl;
 393         if (!text)
 394                 return;
 395
 396         par = bv_->cursor().par();
 397         pos = bv_->cursor().pos();
 398         selstartpar = bv_->selStart().par();
 399         selstartpos = bv_->selStart().pos();
 400         selendpar = bv_->selEnd().par();
 401         selendpos = bv_->selEnd().pos();
 402         sel = bv_->selection().set();
 403         mark_set = bv_->selection().mark();
 404         text->textwidth_ = bv_->workWidth();
 405         text->fullRebreak();
 406         update();
 407
 408         if (par != -1) {
 409                 bv_->selection().set(true);
 410                 // At this point just to avoid the Delete-Empty-Paragraph-
 411                 // Mechanism when setting the cursor.
 412                 bv_->selection().mark(mark_set);
 413                 if (sel) {
 414                         text->setCursor(selstartpar, selstartpos);
 415                         bv_->resetAnchor();
 416                         text->setCursor(selendpar, selendpos);
 417                         bv_->setSelection();
 418                         text->setCursor(par, pos);
 419                 } else {
 420                         text->setCursor(par, pos);
 421                         bv_->resetAnchor();
 422                         bv_->selection().set(false);
 423                 }
 424         }
 425
 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::GUI] << "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] << "Updating scrollbar: h " << t.height << ", top_y() "
 449                 << top_y() << ", default height " << defaultRowHeight() << endl;
 450
 451         workarea().setScrollbarParams(t.height, top_y(), defaultRowHeight());
 452 }
 453
 454
 455 void BufferView::Pimpl::scrollDocView(int value)
 456 {
 457         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 458
 459         if (!buffer_)
 460                 return;
 461
 462         screen().hideCursor();
 463
 464         top_y(value);
 465         screen().redraw(*bv_);
 466
 467         if (!lyxrc.cursor_follows_scrollbar)
 468                 return;
 469
 470         int const height = defaultRowHeight();
 471         int const first = top_y() + height;
 472         int const last = top_y() + workarea().workHeight() - height;
 473
 474         LyXText * text = bv_->text();
 475         if (text->cursorY() < first)
 476                 text->setCursorFromCoordinates(0, first);
 477         else if (text->cursorY() > last)
 478                 text->setCursorFromCoordinates(0, last);
 479
 480         owner_->updateLayoutChoice();
 481 }
 482
 483
 484 void BufferView::Pimpl::scroll(int lines)
 485 {
 486         if (!buffer_)
 487                 return;
 488
 489         LyXText const * t = bv_->text();
 490         int const line_height = defaultRowHeight();
 491
 492         // The new absolute coordinate
 493         int new_top_y = top_y() + lines * line_height;
 494
 495         // Restrict to a valid value
 496         new_top_y = std::min(t->height - 4 * line_height, new_top_y);
 497         new_top_y = std::max(0, new_top_y);
 498
 499         scrollDocView(new_top_y);
 500
 501         // Update the scrollbar.
 502         workarea().setScrollbarParams(t->height, top_y(), defaultRowHeight());
 503 }
 504
 505
 506 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 507                                          key_modifier::state state)
 508 {
 509         bv_->owner()->getLyXFunc().processKeySym(key, state);
 510
 511         /* This is perhaps a bit of a hack. When we move
 512          * around, or type, it's nice to be able to see
 513          * the cursor immediately after the keypress. So
 514          * we reset the toggle timeout and force the visibility
 515          * of the cursor. Note we cannot do this inside
 516          * dispatch() itself, because that's called recursively.
 517          */
 518         if (available()) {
 519                 cursor_timeout.restart();
 520                 screen().showCursor(*bv_);
 521         }
 522 }
 523
 524
 525 void BufferView::Pimpl::selectionRequested()
 526 {
 527         static string sel;
 528
 529         if (!available())
 530                 return;
 531
 532         LyXText * text = bv_->getLyXText();
 533
 534         if (!bv_->selection().set()) {
 535                 xsel_cache_.set = false;
 536                 return;
 537         }
 538
 539         if (!xsel_cache_.set ||
 540             bv_->cursor() != xsel_cache_.cursor ||
 541             bv_->anchor() != xsel_cache_.anchor)
 542         {
 543                 xsel_cache_.cursor = bv_->cursor();
 544                 xsel_cache_.anchor = bv_->anchor();
 545                 xsel_cache_.set = bv_->selection().set();
 546                 sel = text->selectionAsString(*bv_->buffer(), false);
 547                 if (!sel.empty())
 548                         workarea().putClipboard(sel);
 549         }
 550 }
 551
 552
 553 void BufferView::Pimpl::selectionLost()
 554 {
 555         if (available()) {
 556                 screen().hideCursor();
 557                 bv_->clearSelection();
 558                 xsel_cache_.set = false;
 559         }
 560 }
 561
 562
 563 void BufferView::Pimpl::workAreaResize()
 564 {
 565         static int work_area_width;
 566         static int work_area_height;
 567
 568         bool const widthChange = workarea().workWidth() != work_area_width;
 569         bool const heightChange = workarea().workHeight() != work_area_height;
 570
 571         // update from work area
 572         work_area_width = workarea().workWidth();
 573         work_area_height = workarea().workHeight();
 574
 575         if (buffer_ != 0) {
 576                 if (widthChange) {
 577                         // The visible LyXView need a resize
 578                         resizeCurrentBuffer();
 579                 }
 580         }
 581
 582         if (widthChange || heightChange)
 583                 update();
 584
 585         // always make sure that the scrollbar is sane.
 586         updateScrollbar();
 587         owner_->updateLayoutChoice();
 588 }
 589
 590
 591 void BufferView::Pimpl::update()
 592 {
 593         //lyxerr << "BufferView::update()" << endl;
 594         // fix cursor coordinate cache in case something went wrong
 595
 596         // check needed to survive LyX startup
 597         if (bv_->getLyXText()) {
 598                 // update all 'visible' paragraphs
 599                 ParagraphList::iterator beg;
 600                 ParagraphList::iterator end;
 601                 getParsInRange(buffer_->paragraphs(),
 602                                top_y(), top_y() + workarea().workHeight(),
 603                                beg, end);
 604                 bv_->text()->redoParagraphs(beg, end);
 605                 updateScrollbar();
 606         }
 607         screen().redraw(*bv_);
 608 }
 609
 610
 611 // Callback for cursor timer
 612 void BufferView::Pimpl::cursorToggle()
 613 {
 614         if (!buffer_) {
 615                 cursor_timeout.restart();
 616                 return;
 617         }
 618
 619         screen().toggleCursor(*bv_);
 620         cursor_timeout.restart();
 621 }
 622
 623
 624 bool BufferView::Pimpl::available() const
 625 {
 626         return buffer_ && bv_->text();
 627 }
 628
 629
 630 Change const BufferView::Pimpl::getCurrentChange()
 631 {
 632         if (!bv_->buffer()->params().tracking_changes)
 633                 return Change(Change::UNCHANGED);
 634
 635         LyXText * text = bv_->getLyXText();
 636
 637         if (!bv_->selection().set())
 638                 return Change(Change::UNCHANGED);
 639
 640         return text->getPar(bv_->selStart())
 641                 ->lookupChangeFull(bv_->selStart().pos());
 642 }
 643
 644
 645 void BufferView::Pimpl::savePosition(unsigned int i)
 646 {
 647         if (i >= saved_positions_num)
 648                 return;
 649         saved_positions[i] = Position(buffer_->fileName(),
 650                                       bv_->text()->cursorPar()->id(),
 651                                       bv_->text()->cursor().pos());
 652         if (i > 0)
 653                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 654 }
 655
 656
 657 void BufferView::Pimpl::restorePosition(unsigned int i)
 658 {
 659         if (i >= saved_positions_num)
 660                 return;
 661
 662         string const fname = saved_positions[i].filename;
 663
 664         bv_->clearSelection();
 665
 666         if (fname != buffer_->fileName()) {
 667                 Buffer * b = 0;
 668                 if (bufferlist.exists(fname))
 669                         b = bufferlist.getBuffer(fname);
 670                 else {
 671                         b = bufferlist.newBuffer(fname);
 672                         ::loadLyXFile(b, fname); // don't ask, just load it
 673                 }
 674                 if (b)
 675                         buffer(b);
 676         }
 677
 678         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 679         if (par == buffer_->par_iterator_end())
 680                 return;
 681
 682         bv_->text()->setCursor(par.pit(),
 683                              min(par->size(), saved_positions[i].par_pos));
 684
 685         if (i > 0)
 686                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 687 }
 688
 689
 690 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 691 {
 692         return i < saved_positions_num && !saved_positions[i].filename.empty();
 693 }
 694
 695
 696 void BufferView::Pimpl::switchKeyMap()
 697 {
 698         if (!lyxrc.rtl_support)
 699                 return;
 700
 701         Intl & intl = owner_->getIntl();
 702         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 703                 if (intl.keymap == Intl::PRIMARY)
 704                         intl.KeyMapSec();
 705         } else {
 706                 if (intl.keymap == Intl::SECONDARY)
 707                         intl.KeyMapPrim();
 708         }
 709 }
 710
 711
 712 void BufferView::Pimpl::center()
 713 {
 714         LyXText * text = bv_->text();
 715
 716         bv_->clearSelection();
 717         int const half_height = workarea().workHeight() / 2;
 718         int new_y = std::max(0, text->cursorY() - half_height);
 719
 720         // FIXME: look at this comment again ...
 721         // This updates top_y() but means the fitCursor() call
 722         // from the update(FITCUR) doesn't realise that we might
 723         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 724         // the scrollbar to be updated as it should, so we have
 725         // to do it manually. Any operation that does a center()
 726         // and also might have moved top_y() must make sure to call
 727         // updateScrollbar() currently. Never mind that this is a
 728         // pretty obfuscated way of updating t->top_y()
 729         top_y(new_y);
 730 }
 731
 732
 733 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 734 {
 735         workarea().putClipboard(stuff);
 736 }
 737
 738
 739 InsetOld * BufferView::Pimpl::getInsetByCode(InsetOld::Code code)
 740 {
 741 #if 0
 742         CursorSlice cursor = bv_->getLyXText()->cursor;
 743         Buffer::inset_iterator it =
 744                 find_if(Buffer::inset_iterator(
 745                         cursorPar(), cursor().pos()),
 746                         buffer_->inset_iterator_end(),
 747                         lyx::compare_memfun(&Inset::lyxCode, code));
 748         return it != buffer_->inset_iterator_end() ? (*it) : 0;
 749 #else
 750         // Ok, this is a little bit too brute force but it
 751         // should work for now. Better infrastructure is coming. (Lgb)
 752
 753         Buffer * b = bv_->buffer();
 754         LyXText * text = bv_->getLyXText();
 755
 756         Buffer::inset_iterator beg = b->inset_iterator_begin();
 757         Buffer::inset_iterator end = b->inset_iterator_end();
 758
 759         bool cursor_par_seen = false;
 760
 761         for (; beg != end; ++beg) {
 762                 if (beg.getPar() == text->cursorPar()) {
 763                         cursor_par_seen = true;
 764                 }
 765                 if (cursor_par_seen) {
 766                         if (beg.getPar() == text->cursorPar()
 767                             && beg.getPos() >= text->cursor().pos()) {
 768                                 break;
 769                         } else if (beg.getPar() != text->cursorPar()) {
 770                                 break;
 771                         }
 772                 }
 773
 774         }
 775         if (beg != end) {
 776                 // Now find the first inset that matches code.
 777                 for (; beg != end; ++beg) {
 778                         if (beg->lyxCode() == code) {
 779                                 return &(*beg);
 780                         }
 781                 }
 782         }
 783         return 0;
 784 #endif
 785 }
 786
 787
 788 void BufferView::Pimpl::MenuInsertLyXFile(string const & filen)
 789 {
 790         string filename = filen;
 791
 792         if (filename.empty()) {
 793                 // Launch a file browser
 794                 string initpath = lyxrc.document_path;
 795
 796                 if (available()) {
 797                         string const trypath = owner_->buffer()->filePath();
 798                         // If directory is writeable, use this as default.
 799                         if (IsDirWriteable(trypath))
 800                                 initpath = trypath;
 801                 }
 802
 803                 FileDialog fileDlg(_("Select LyX document to insert"),
 804                         LFUN_FILE_INSERT,
 805                         make_pair(string(_("Documents|#o#O")),
 806                                   string(lyxrc.document_path)),
 807                         make_pair(string(_("Examples|#E#e")),
 808                                   string(AddPath(system_lyxdir(), "examples"))));
 809
 810                 FileDialog::Result result =
 811                         fileDlg.open(initpath,
 812                                      FileFilterList(_("LyX Documents (*.lyx)")),
 813                                      string());
 814
 815                 if (result.first == FileDialog::Later)
 816                         return;
 817
 818                 filename = result.second;
 819
 820                 // check selected filename
 821                 if (filename.empty()) {
 822                         owner_->message(_("Canceled."));
 823                         return;
 824                 }
 825         }
 826
 827         // get absolute path of file and add ".lyx" to the filename if
 828         // necessary
 829         filename = FileSearch(string(), filename, "lyx");
 830
 831         string const disp_fn = MakeDisplayPath(filename);
 832         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 833         if (bv_->insertLyXFile(filename))
 834                 owner_->message(bformat(_("Document %1$s inserted."),
 835                                         disp_fn));
 836         else
 837                 owner_->message(bformat(_("Could not insert document %1$s"),
 838                                         disp_fn));
 839 }
 840
 841
 842 void BufferView::Pimpl::trackChanges()
 843 {
 844         Buffer * buf(bv_->buffer());
 845         bool const tracking(buf->params().tracking_changes);
 846
 847         if (!tracking) {
 848                 ParIterator const end = buf->par_iterator_end();
 849                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 850                         it->trackChanges();
 851                 buf->params().tracking_changes = true;
 852
 853                 // we cannot allow undos beyond the freeze point
 854                 buf->undostack().clear();
 855         } else {
 856                 update();
 857                 bv_->text()->setCursor(0, 0);
 858 #warning changes FIXME
 859                 bool found = lyx::find::findNextChange(bv_);
 860                 if (found) {
 861                         owner_->getDialogs().show("changes");
 862                         return;
 863                 }
 864
 865                 ParIterator const end = buf->par_iterator_end();
 866                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 867                         it->untrackChanges();
 868                 buf->params().tracking_changes = false;
 869         }
 870
 871         buf->redostack().clear();
 872 }
 873
 874 #warning remove me
 875 LCursor theTempCursor(0);
 876
 877 namespace {
 878
 879         InsetOld * insetFromCoords(BufferView * bv, int x, int y)
 880         {
 881                 lyxerr << "insetFromCoords" << endl;
 882                 LyXText * text = bv->text();
 883                 InsetOld * inset = 0;
 884                 theTempCursor = LCursor(bv);
 885                 while (true) {
 886                         InsetOld * const inset_hit = text->checkInsetHit(x, y);
 887                         if (!inset_hit) {
 888                                 lyxerr << "no further inset hit" << endl;
 889                                 break;
 890                         }
 891                         inset = inset_hit;
 892                         if (!inset->descendable()) {
 893                                 lyxerr << "not descendable" << endl;
 894                                 break;
 895                         }
 896                         int const cell = inset->getCell(x, y + bv->top_y());
 897                         if (cell == -1)
 898                                 break;
 899                         text = inset_hit->getText(cell);
 900                         lyxerr << "Hit inset: " << inset << " at x: " << x
 901                                 << " text: " << text << " y: " << y << endl;
 902                         theTempCursor.push(static_cast<UpdatableInset*>(inset));
 903                 }
 904                 lyxerr << "theTempCursor: " << theTempCursor << endl;
 905                 return inset;
 906         }
 907
 908 }
 909
 910
 911 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd)
 912 {
 913         switch (cmd.action) {
 914         case LFUN_MOUSE_MOTION: {
 915                 if (!available())
 916                         return false;
 917                 FuncRequest cmd1 = cmd;
 918                 UpdatableInset * inset = bv_->fullCursor().innerInset();
 919                 DispatchResult res;
 920                 if (inset) {
 921                         cmd1.x -= inset->x();
 922                         cmd1.y -= inset->y();
 923                         res = inset->dispatch(*bv_, cmd1);
 924                 } else {
 925                         cmd1.y += bv_->top_y();
 926                         res = bv_->fullCursor().innerText()->dispatch(*bv_, cmd1);
 927                 }
 928
 929                 if (bv_->fitCursor() || res.update()) {
 930                         bv_->update();
 931                         bv_->fullCursor().updatePos();
 932                 }
 933
 934                 return true;
 935         }
 936
 937         case LFUN_MOUSE_PRESS:
 938         case LFUN_MOUSE_RELEASE:
 939         case LFUN_MOUSE_DOUBLE:
 940         case LFUN_MOUSE_TRIPLE: {
 941                 // We pass those directly to the Bufferview, since
 942                 // otherwise selection handling breaks down
 943
 944                 // Doesn't go through lyxfunc, so we need to update
 945                 // the layout choice etc. ourselves
 946
 947                 // e.g. Qt mouse press when no buffer
 948                 if (!available())
 949                         return false;
 950
 951                 screen().hideCursor();
 952
 953                 // either the inset under the cursor or the surrounding LyXText will
 954                 // handle this event.
 955
 956                 // built temporary path to inset
 957                 InsetOld * inset = insetFromCoords(bv_, cmd.x, cmd.y);
 958                 DispatchResult res;
 959
 960                 // try to dispatch to that inset
 961                 if (inset) {
 962                         FuncRequest cmd2 = cmd;
 963                         lyxerr << "dispatching action " << cmd2.action
 964                                << " to inset " << inset << endl;
 965                         cmd2.x -= inset->x();
 966                         cmd2.y -= inset->y();
 967                         res = inset->dispatch(*bv_, cmd2);
 968                         if (res.update()) {
 969                                 bv_->update();
 970                                 bv_->fullCursor().updatePos();
 971                         }
 972                         res.update(false);
 973                         switch (res.val()) {
 974                                 case FINISHED:
 975                                 case FINISHED_RIGHT:
 976                                 case FINISHED_UP:
 977                                 case FINISHED_DOWN:
 978                                         theTempCursor.pop();
 979                                         bv_->fullCursor(theTempCursor);
 980                                         bv_->fullCursor().innerText()
 981                                                 ->setCursorFromCoordinates(cmd.x, top_y() + cmd.y);
 982                                         if (bv_->fitCursor())
 983                                                 bv_->update();
 984                                         return true;
 985                                 default:
 986                                         lyxerr << "not dispatched by inner inset val: " << res.val() << endl;
 987                                         break;
 988                         }
 989                 }
 990
 991                 // otherwise set cursor to surrounding LyXText
 992                 if (!res.dispatched()) {
 993                         lyxerr << "temp cursor is: " << theTempCursor << endl;
 994                         lyxerr << "dispatching " << cmd
 995                                << " to surrounding LyXText "
 996                                << theTempCursor.innerText() << endl;
 997                         bv_->fullCursor(theTempCursor);
 998                         FuncRequest cmd1 = cmd;
 999                         cmd1.y += bv_->top_y();
1000                         res = bv_->fullCursor().innerText()->dispatch(*bv_, cmd1);
1001                         if (bv_->fitCursor() || res.update())
1002                                 bv_->update();
1003
1004                         //return DispatchResult(true, true);
1005                 }
1006                 // see workAreaKeyPress
1007                 cursor_timeout.restart();
1008                 screen().showCursor(*bv_);
1009
1010                 // skip these when selecting
1011                 if (cmd.action != LFUN_MOUSE_MOTION) {
1012                         owner_->updateLayoutChoice();
1013                         owner_->updateToolbar();
1014                 }
1015
1016                 // slight hack: this is only called currently when we
1017                 // clicked somewhere, so we force through the display
1018                 // of the new status here.
1019                 owner_->clearMessage();
1020                 return true;
1021         }
1022
1023         default:
1024                 owner_->dispatch(cmd);
1025                 return true;
1026         }
1027 }
1028
1029
1030 bool BufferView::Pimpl::dispatch(FuncRequest const & ev)
1031 {
1032         // Make sure that the cached BufferView is correct.
1033         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
1034                 << " action[" << ev.action << ']'
1035                 << " arg[" << ev.argument << ']'
1036                 << " x[" << ev.x << ']'
1037                 << " y[" << ev.y << ']'
1038                 << " button[" << ev.button() << ']'
1039                 << endl;
1040
1041         LyXTextClass const & tclass = buffer_->params().getLyXTextClass();
1042
1043         switch (ev.action) {
1044
1045         case LFUN_SCROLL_INSET:
1046                 // this is not handled here as this function is only active
1047                 // if we have a locking_inset and that one is (or contains)
1048                 // a tabular-inset
1049                 break;
1050
1051         case LFUN_FILE_INSERT:
1052                 MenuInsertLyXFile(ev.argument);
1053                 break;
1054
1055         case LFUN_FILE_INSERT_ASCII_PARA:
1056                 InsertAsciiFile(bv_, ev.argument, true);
1057                 break;
1058
1059         case LFUN_FILE_INSERT_ASCII:
1060                 InsertAsciiFile(bv_, ev.argument, false);
1061                 break;
1062
1063         case LFUN_FONT_STATE:
1064                 owner_->getLyXFunc().setMessage(currentState(bv_));
1065                 break;
1066
1067         case LFUN_INSERT_LABEL: {
1068                 // Try and generate a valid label
1069                 string const contents = ev.argument.empty() ?
1070                         getPossibleLabel(*bv_) : ev.argument;
1071                 InsetCommandParams icp("label", contents);
1072                 string data = InsetCommandMailer::params2string("label", icp);
1073                 owner_->getDialogs().show("label", data, 0);
1074                 break;
1075         }
1076
1077         case LFUN_BOOKMARK_SAVE:
1078                 savePosition(strToUnsignedInt(ev.argument));
1079                 break;
1080
1081         case LFUN_BOOKMARK_GOTO:
1082                 restorePosition(strToUnsignedInt(ev.argument));
1083                 break;
1084
1085         case LFUN_REF_GOTO: {
1086                 string label = ev.argument;
1087                 if (label.empty()) {
1088                         InsetRef * inset =
1089                                 static_cast<InsetRef*>(getInsetByCode(InsetOld::REF_CODE));
1090                         if (inset) {
1091                                 label = inset->getContents();
1092                                 savePosition(0);
1093                         }
1094                 }
1095
1096                 if (!label.empty())
1097                         bv_->gotoLabel(label);
1098         }
1099         break;
1100
1101         // --- accented characters ---------------------------
1102
1103         case LFUN_UMLAUT:
1104         case LFUN_CIRCUMFLEX:
1105         case LFUN_GRAVE:
1106         case LFUN_ACUTE:
1107         case LFUN_TILDE:
1108         case LFUN_CEDILLA:
1109         case LFUN_MACRON:
1110         case LFUN_DOT:
1111         case LFUN_UNDERDOT:
1112         case LFUN_UNDERBAR:
1113         case LFUN_CARON:
1114         case LFUN_SPECIAL_CARON:
1115         case LFUN_BREVE:
1116         case LFUN_TIE:
1117         case LFUN_HUNG_UMLAUT:
1118         case LFUN_CIRCLE:
1119         case LFUN_OGONEK:
1120                 if (ev.argument.empty()) {
1121                         // As always...
1122                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1123                 } else {
1124                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1125                         owner_->getIntl().getTransManager()
1126                                 .TranslateAndInsert(ev.argument[0], bv_->getLyXText());
1127                         update();
1128                 }
1129                 break;
1130
1131         case LFUN_MATH_MACRO:
1132         case LFUN_MATH_DELIM:
1133         case LFUN_INSERT_MATRIX:
1134         case LFUN_INSERT_MATH:
1135         case LFUN_MATH_IMPORT_SELECTION: // Imports LaTeX from the X selection
1136         case LFUN_MATH_DISPLAY:          // Open or create a displayed math inset
1137         case LFUN_MATH_MODE:             // Open or create an inlined math inset
1138                 mathDispatch(*bv_, ev);
1139                 break;
1140
1141         case LFUN_INSET_INSERT: {
1142                 // Same as above.
1143                 BOOST_ASSERT(false);
1144                 InsetOld * inset = createInset(bv_, ev);
1145                 if (!inset || !insertInset(inset))
1146                         delete inset;
1147                 break;
1148         }
1149
1150         case LFUN_FLOAT_LIST:
1151                 if (tclass.floats().typeExist(ev.argument)) {
1152                         InsetOld * inset = new InsetFloatList(ev.argument);
1153                         if (!insertInset(inset, tclass.defaultLayoutName()))
1154                                 delete inset;
1155                 } else {
1156                         lyxerr << "Non-existent float type: "
1157                                << ev.argument << endl;
1158                 }
1159                 break;
1160
1161         case LFUN_LAYOUT_PARAGRAPH: {
1162                 string data;
1163                 params2string(*bv_->getLyXText()->cursorPar(), data);
1164                 data = "show\n" + data;
1165                 bv_->owner()->getDialogs().show("paragraph", data);
1166                 break;
1167         }
1168
1169         case LFUN_PARAGRAPH_UPDATE:
1170                 updateParagraphDialog();
1171                 break;
1172
1173         case LFUN_PARAGRAPH_APPLY:
1174                 setParagraphParams(*bv_, ev.argument);
1175                 break;
1176
1177         case LFUN_THESAURUS_ENTRY: {
1178                 string arg = ev.argument;
1179
1180                 if (arg.empty()) {
1181                         arg = bv_->getLyXText()->selectionAsString(*buffer_,
1182                                                                    false);
1183
1184                         // FIXME
1185                         if (arg.size() > 100 || arg.empty()) {
1186                                 // Get word or selection
1187                                 bv_->getLyXText()->selectWordWhenUnderCursor(lyx::WHOLE_WORD);
1188                                 arg = bv_->getLyXText()->selectionAsString(*buffer_, false);
1189                                 // FIXME: where is getLyXText()->unselect(bv_) ?
1190                         }
1191                 }
1192
1193                 bv_->owner()->getDialogs().show("thesaurus", arg);
1194                 break;
1195         }
1196
1197         case LFUN_TRACK_CHANGES:
1198                 trackChanges();
1199                 break;
1200
1201         case LFUN_MERGE_CHANGES:
1202                 owner_->getDialogs().show("changes");
1203                 break;
1204
1205         case LFUN_ACCEPT_ALL_CHANGES: {
1206                 bv_->text()->setCursor(0, 0);
1207 #warning FIXME changes
1208                 while (lyx::find::findNextChange(bv_))
1209                         bv_->getLyXText()->acceptChange();
1210                 update();
1211                 break;
1212         }
1213
1214         case LFUN_REJECT_ALL_CHANGES: {
1215                 bv_->text()->setCursor(0, 0);
1216 #warning FIXME changes
1217                 while (lyx::find::findNextChange(bv_))
1218                         bv_->getLyXText()->rejectChange();
1219                 update();
1220                 break;
1221         }
1222
1223         case LFUN_ACCEPT_CHANGE: {
1224                 bv_->getLyXText()->acceptChange();
1225                 update();
1226                 break;
1227         }
1228
1229         case LFUN_REJECT_CHANGE: {
1230                 bv_->getLyXText()->rejectChange();
1231                 update();
1232                 break;
1233         }
1234
1235         case LFUN_WORD_FIND:
1236                 lyx::find::find(bv_, ev);
1237                 break;
1238
1239         case LFUN_WORD_REPLACE:
1240                 lyx::find::replace(bv_, ev);
1241                 break;
1242
1243         case LFUN_MARK_OFF:
1244                 bv_->clearSelection();
1245                 bv_->update();
1246                 bv_->resetAnchor();
1247                 ev.message(N_("Mark off"));
1248                 break;
1249
1250         case LFUN_MARK_ON:
1251                 bv_->clearSelection();
1252                 bv_->selection().mark(true);
1253                 bv_->update();
1254                 bv_->resetAnchor();
1255                 ev.message(N_("Mark on"));
1256                 break;
1257
1258         case LFUN_SETMARK:
1259                 bv_->clearSelection();
1260                 if (bv_->selection().mark()) {
1261                         ev.message(N_("Mark removed"));
1262                 } else {
1263                         bv_->selection().mark(true);
1264                         ev.message(N_("Mark set"));
1265                 }
1266                 bv_->resetAnchor();
1267                 bv_->update();
1268                 break;
1269
1270         case LFUN_UNKNOWN_ACTION:
1271                 ev.errorMessage(N_("Unknown function!"));
1272                 break;
1273
1274         default:
1275                 return bv_->getLyXText()->dispatch(*bv_, ev).dispatched();
1276         } // end of switch
1277
1278         return true;
1279 }
1280
1281
1282 bool BufferView::Pimpl::insertInset(InsetOld * inset, string const & lout)
1283 {
1284         // not quite sure if we want this...
1285         bv_->text()->recUndo(bv_->text()->cursor().par());
1286         freezeUndo();
1287
1288         bv_->clearSelection();
1289         if (!lout.empty()) {
1290                 bv_->text()->breakParagraph(bv_->buffer()->paragraphs());
1291
1292                 if (!bv_->text()->cursorPar()->empty()) {
1293                         bv_->text()->cursorLeft(bv_);
1294                         bv_->text()->breakParagraph(bv_->buffer()->paragraphs());
1295                 }
1296
1297                 string lres = lout;
1298                 LyXTextClass const & tclass = buffer_->params().getLyXTextClass();
1299                 bool hasLayout = tclass.hasLayout(lres);
1300
1301                 bv_->text()->setLayout(hasLayout ? lres : tclass.defaultLayoutName());
1302                 bv_->text()->setParagraph(Spacing(), LYX_ALIGN_LAYOUT, string(), 0);
1303         }
1304         bv_->fullCursor().innerText()->insertInset(inset);
1305         unFreezeUndo();
1306         return true;
1307 }
1308
1309
1310 bool BufferView::Pimpl::ChangeInsets(InsetOld::Code code,
1311                                      string const & from, string const & to)
1312 {
1313         bool need_update = false;
1314         CursorSlice cur = bv_->text()->cursor();
1315
1316         ParIterator end = bv_->buffer()->par_iterator_end();
1317         for (ParIterator it = bv_->buffer()->par_iterator_begin();
1318              it != end; ++it) {
1319                 bool changed_inset = false;
1320                 for (InsetList::iterator it2 = it->insetlist.begin();
1321                      it2 != it->insetlist.end(); ++it2) {
1322                         if (it2->inset->lyxCode() == code) {
1323                                 InsetCommand * inset = static_cast<InsetCommand *>(it2->inset);
1324                                 if (inset->getContents() == from) {
1325                                         inset->setContents(to);
1326                                         changed_inset = true;
1327                                 }
1328                         }
1329                 }
1330                 if (changed_inset) {
1331                         need_update = true;
1332
1333                         // FIXME
1334
1335                         // The test it.size() == 1 was needed to prevent crashes.
1336                         // How to set the cursor correctly when it.size() > 1 ??
1337                         if (it.size() == 1) {
1338                                 bv_->text()->setCursorIntern(bv_->text()->parOffset(it.pit()), 0);
1339                                 bv_->text()->redoParagraph(bv_->text()->cursorPar());
1340                         }
1341                 }
1342         }
1343         bv_->text()->setCursorIntern(cur.par(), cur.pos());
1344         return need_update;
1345 }
1346
1347
1348 void BufferView::Pimpl::updateParagraphDialog()
1349 {
1350         if (!bv_->owner()->getDialogs().visible("paragraph"))
1351                 return;
1352         Paragraph const & par = *bv_->getLyXText()->cursorPar();
1353         string data;
1354         params2string(par, data);
1355
1356         // Will the paragraph accept changes from the dialog?
1357         InsetOld * const inset = par.inInset();
1358         bool const accept =
1359                 !(inset && inset->forceDefaultParagraphs(inset));
1360
1361         data = "update " + tostr(accept) + '\n' + data;
1362         bv_->owner()->getDialogs().update("paragraph", data);
1363 }