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