src/BufferView_pimpl.C

   1 /**
   2  * \file BufferView_pimpl.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Asger Alstrup
   7  * \author Alfredo Braustein
   8  * \author Lars Gullik Bjønnes
   9  * \author Jean-Marc Lasgouttes
  10  * \author Angus Leeming
  11  * \author John Levon
  12  * \author André Pönitz
  13  * \author Dekel Tsur
  14  * \author Jürgen Vigna
  15  *
  16  * Full author contact details are available in file CREDITS.
  17  */
  18
  19 #include <config.h>
  20
  21 #include "BufferView_pimpl.h"
  22 #include "buffer.h"
  23 #include "buffer_funcs.h"
  24 #include "bufferlist.h"
  25 #include "bufferparams.h"
  26 #include "cursor.h"
  27 #include "debug.h"
  28 #include "dispatchresult.h"
  29 #include "factory.h"
  30 #include "FloatList.h"
  31 #include "funcrequest.h"
  32 #include "gettext.h"
  33 #include "intl.h"
  34 #include "iterators.h"
  35 #include "lyx_cb.h" // added for Dispatch functions
  36 #include "lyx_main.h"
  37 #include "lyxfind.h"
  38 #include "lyxfunc.h"
  39 #include "lyxtext.h"
  40 #include "lyxrc.h"
  41 #include "lastfiles.h"
  42 #include "paragraph.h"
  43 #include "paragraph_funcs.h"
  44 #include "ParagraphParameters.h"
  45 #include "undo.h"
  46 #include "vspace.h"
  47
  48 #include "insets/insetfloatlist.h"
  49 #include "insets/insetref.h"
  50
  51 #include "frontends/Alert.h"
  52 #include "frontends/Dialogs.h"
  53 #include "frontends/FileDialog.h"
  54 #include "frontends/LyXView.h"
  55 #include "frontends/LyXScreenFactory.h"
  56 #include "frontends/screen.h"
  57 #include "frontends/WorkArea.h"
  58 #include "frontends/WorkAreaFactory.h"
  59
  60 #include "graphics/Previews.h"
  61
  62 #include "mathed/formulabase.h"
  63
  64 #include "support/filetools.h"
  65 #include "support/path_defines.h"
  66 #include "support/tostr.h"
  67
  68 #include <boost/bind.hpp>
  69
  70 using bv_funcs::currentState;
  71
  72 using lyx::pos_type;
  73
  74 using lyx::support::AddPath;
  75 using lyx::support::bformat;
  76 using lyx::support::FileSearch;
  77 using lyx::support::IsDirWriteable;
  78 using lyx::support::MakeDisplayPath;
  79 using lyx::support::strToUnsignedInt;
  80 using lyx::support::system_lyxdir;
  81
  82 using std::endl;
  83 using std::make_pair;
  84 using std::min;
  85 using std::string;
  86
  87
  88 extern BufferList bufferlist;
  89
  90
  91 namespace {
  92
  93 unsigned int const saved_positions_num = 20;
  94
  95 // All the below connection objects are needed because of a bug in some
  96 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
  97 // to these connections we avoid a segfault upon startup, and also at exit.
  98 // (Lgb)
  99
 100 boost::signals::connection dispatchcon;
 101 boost::signals::connection timecon;
 102 boost::signals::connection doccon;
 103 boost::signals::connection resizecon;
 104 boost::signals::connection kpresscon;
 105 boost::signals::connection selectioncon;
 106 boost::signals::connection lostcon;
 107
 108
 109 } // anon namespace
 110
 111
 112 BufferView::Pimpl::Pimpl(BufferView * bv, LyXView * owner,
 113              int xpos, int ypos, int width, int height)
 114         : bv_(bv), owner_(owner), buffer_(0), cursor_timeout(400),
 115           using_xterm_cursor(false), cursor_(bv)
 116 {
 117         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 118         screen_.reset(LyXScreenFactory::create(workarea()));
 119
 120         // Setup the signals
 121         doccon = workarea().scrollDocView
 122                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 123         resizecon = workarea().workAreaResize
 124                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 125         dispatchcon = workarea().dispatch
 126                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 127         kpresscon = workarea().workAreaKeyPress
 128                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 129         selectioncon = workarea().selectionRequested
 130                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 131         lostcon = workarea().selectionLost
 132                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 133
 134         timecon = cursor_timeout.timeout
 135                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 136         cursor_timeout.start();
 137         saved_positions.resize(saved_positions_num);
 138 }
 139
 140
 141 void BufferView::Pimpl::addError(ErrorItem const & ei)
 142 {
 143         errorlist_.push_back(ei);
 144 }
 145
 146
 147 void BufferView::Pimpl::showReadonly(bool)
 148 {
 149         owner_->updateWindowTitle();
 150         owner_->getDialogs().updateBufferDependent(false);
 151 }
 152
 153
 154 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 155 {
 156         if (errorConnection_.connected())
 157                 disconnectBuffer();
 158
 159         errorConnection_ = buf.error.connect(boost::bind(&BufferView::Pimpl::addError, this, _1));
 160         messageConnection_ = buf.message.connect(boost::bind(&LyXView::message, owner_, _1));
 161         busyConnection_ = buf.busy.connect(boost::bind(&LyXView::busy, owner_, _1));
 162         titleConnection_ = buf.updateTitles.connect(boost::bind(&LyXView::updateWindowTitle, owner_));
 163         timerConnection_ = buf.resetAutosaveTimers.connect(boost::bind(&LyXView::resetAutosaveTimer, owner_));
 164         readonlyConnection_ = buf.readonly.connect(boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 165         closingConnection_ = buf.closing.connect(boost::bind(&BufferView::Pimpl::buffer, this, (Buffer *)0));
 166 }
 167
 168
 169 void BufferView::Pimpl::disconnectBuffer()
 170 {
 171         errorConnection_.disconnect();
 172         messageConnection_.disconnect();
 173         busyConnection_.disconnect();
 174         titleConnection_.disconnect();
 175         timerConnection_.disconnect();
 176         readonlyConnection_.disconnect();
 177         closingConnection_.disconnect();
 178 }
 179
 180
 181 bool BufferView::Pimpl::newFile(string const & filename,
 182                                 string const & tname,
 183                                 bool isNamed)
 184 {
 185         Buffer * b = ::newFile(filename, tname, isNamed);
 186         buffer(b);
 187         return true;
 188 }
 189
 190
 191 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 192 {
 193         // get absolute path of file and add ".lyx" to the filename if
 194         // necessary
 195         string s = FileSearch(string(), filename, "lyx");
 196
 197         bool const found = !s.empty();
 198
 199         if (!found)
 200                 s = filename;
 201
 202         // file already open?
 203         if (bufferlist.exists(s)) {
 204                 string const file = MakeDisplayPath(s, 20);
 205                 string text = bformat(_("The document %1$s is already "
 206                                         "loaded.\n\nDo you want to revert "
 207                                         "to the saved version?"), file);
 208                 int const ret = Alert::prompt(_("Revert to saved document?"),
 209                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 210
 211                 if (ret != 0) {
 212                         buffer(bufferlist.getBuffer(s));
 213                         return true;
 214                 } else {
 215                         // FIXME: should be LFUN_REVERT
 216                         if (!bufferlist.close(bufferlist.getBuffer(s), false))
 217                                 return false;
 218                         // Fall through to new load. (Asger)
 219                 }
 220         }
 221
 222         Buffer * b;
 223
 224         if (found) {
 225                 b = bufferlist.newBuffer(s);
 226                 connectBuffer(*b);
 227                 if (!::loadLyXFile(b, s)) {
 228                         bufferlist.release(b);
 229                         return false;
 230                 }
 231         } else {
 232                 string text = bformat(_("The document %1$s does not yet "
 233                                         "exist.\n\nDo you want to create "
 234                                         "a new document?"), s);
 235                 int const ret = Alert::prompt(_("Create new document?"),
 236                          text, 0, 1, _("&Create"), _("Cancel"));
 237
 238                 if (ret == 0)
 239                         b = ::newFile(s, string(), true);
 240                 else
 241                         return false;
 242         }
 243
 244         buffer(b);
 245         bv_->showErrorList(_("Parse"));
 246
 247         if (tolastfiles)
 248                 LyX::ref().lastfiles().newFile(b->fileName());
 249
 250         return true;
 251 }
 252
 253
 254 WorkArea & BufferView::Pimpl::workarea() const
 255 {
 256         return *workarea_.get();
 257 }
 258
 259
 260 LyXScreen & BufferView::Pimpl::screen() const
 261 {
 262         return *screen_.get();
 263 }
 264
 265
 266 Painter & BufferView::Pimpl::painter() const
 267 {
 268         return workarea().getPainter();
 269 }
 270
 271
 272 void BufferView::Pimpl::top_y(int y)
 273 {
 274         top_y_ = y;
 275 }
 276
 277
 278 int BufferView::Pimpl::top_y() const
 279 {
 280         return top_y_;
 281 }
 282
 283
 284 void BufferView::Pimpl::buffer(Buffer * b)
 285 {
 286         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 287                             << b << ')' << endl;
 288         if (buffer_) {
 289                 disconnectBuffer();
 290                 delete bv_->text;
 291                 bv_->text = 0;
 292         }
 293
 294         // set current buffer
 295         buffer_ = b;
 296
 297         top_y_ = 0;
 298
 299         // if we're quitting lyx, don't bother updating stuff
 300         if (quitting)
 301                 return;
 302
 303         // if we are closing the buffer, use the first buffer as current
 304         if (!buffer_)
 305                 buffer_ = bufferlist.first();
 306
 307         if (buffer_) {
 308                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 309                 connectBuffer(*buffer_);
 310
 311                 // If we don't have a text object for this, we make one
 312                 if (bv_->text == 0)
 313                         resizeCurrentBuffer();
 314
 315                 // FIXME: needed when ?
 316                 fitCursor();
 317
 318                 // Buffer-dependent dialogs should be updated or
 319                 // hidden. This should go here because some dialogs (eg ToC)
 320                 // require bv_->text.
 321                 owner_->getDialogs().updateBufferDependent(true);
 322         } else {
 323                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 324                 owner_->getDialogs().hideBufferDependent();
 325         }
 326
 327         update();
 328         updateScrollbar();
 329         owner_->updateMenubar();
 330         owner_->updateToolbar();
 331         owner_->updateLayoutChoice();
 332         owner_->updateWindowTitle();
 333
 334         // Don't forget to update the Layout
 335         if (buffer_)
 336                 owner_->setLayout(bv_->text->cursorPar()->layout()->name());
 337
 338         if (lyx::graphics::Previews::activated() && buffer_)
 339                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 340 }
 341
 342
 343 bool BufferView::Pimpl::fitCursor()
 344 {
 345         lyxerr << "BufferView::Pimpl::fitCursor." << endl;
 346         if (screen().fitCursor(bv_)) {
 347                 updateScrollbar();
 348                 return true;
 349         }
 350         return false;
 351 }
 352
 353
 354 void BufferView::Pimpl::redoCurrentBuffer()
 355 {
 356         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 357         if (buffer_ && bv_->text) {
 358                 resizeCurrentBuffer();
 359                 updateScrollbar();
 360                 owner_->updateLayoutChoice();
 361                 update();
 362         }
 363 }
 364
 365
 366 void BufferView::Pimpl::resizeCurrentBuffer()
 367 {
 368         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 369
 370         int par = -1;
 371         int selstartpar = -1;
 372         int selendpar = -1;
 373
 374         pos_type pos = 0;
 375         pos_type selstartpos = 0;
 376         pos_type selendpos = 0;
 377         bool selection = false;
 378         bool mark_set  = false;
 379
 380         owner_->busy(true);
 381
 382         owner_->message(_("Formatting document..."));
 383
 384         if (bv_->text) {
 385                 par = bv_->text->cursor.par();
 386                 pos = bv_->text->cursor.pos();
 387                 selstartpar = bv_->text->selection.start.par();
 388                 selstartpos = bv_->text->selection.start.pos();
 389                 selendpar = bv_->text->selection.end.par();
 390                 selendpos = bv_->text->selection.end.pos();
 391                 selection = bv_->text->selection.set();
 392                 mark_set = bv_->text->selection.mark();
 393                 bv_->text->fullRebreak();
 394                 update();
 395         } else {
 396                 bv_->text = new LyXText(bv_, 0, false, bv_->buffer()->paragraphs());
 397                 bv_->text->init(bv_);
 398         }
 399
 400         if (par != -1) {
 401                 bv_->text->selection.set(true);
 402                 // At this point just to avoid the Delete-Empty-Paragraph-
 403                 // Mechanism when setting the cursor.
 404                 bv_->text->selection.mark(mark_set);
 405                 if (selection) {
 406                         bv_->text->setCursor(selstartpar, selstartpos);
 407                         bv_->text->selection.cursor = bv_->text->cursor;
 408                         bv_->text->setCursor(selendpar, selendpos);
 409                         bv_->text->setSelection();
 410                         bv_->text->setCursor(par, pos);
 411                 } else {
 412                         bv_->text->setCursor(par, pos);
 413                         bv_->text->selection.cursor = bv_->text->cursor;
 414                         bv_->text->selection.set(false);
 415                 }
 416         }
 417
 418         fitCursor();
 419
 420         switchKeyMap();
 421         owner_->busy(false);
 422
 423         // reset the "Formatting..." message
 424         owner_->clearMessage();
 425
 426         updateScrollbar();
 427 }
 428
 429
 430 void BufferView::Pimpl::updateScrollbar()
 431 {
 432         if (!bv_->text) {
 433                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 434                 workarea().setScrollbarParams(0, 0, 0);
 435                 return;
 436         }
 437
 438         LyXText const & t = *bv_->text;
 439
 440         lyxerr[Debug::GUI] << "Updating scrollbar: h " << t.height << ", top_y() "
 441                 << top_y() << ", default height " << defaultRowHeight() << endl;
 442
 443         workarea().setScrollbarParams(t.height, top_y(), defaultRowHeight());
 444 }
 445
 446
 447 void BufferView::Pimpl::scrollDocView(int value)
 448 {
 449         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 450
 451         if (!buffer_)
 452                 return;
 453
 454         screen().hideCursor();
 455
 456         top_y(value);
 457         screen().redraw(*bv_);
 458
 459         if (!lyxrc.cursor_follows_scrollbar)
 460                 return;
 461
 462         int const height = defaultRowHeight();
 463         int const first = top_y() + height;
 464         int const last = top_y() + workarea().workHeight() - height;
 465
 466         LyXText * text = bv_->text;
 467         if (text->cursor.y() < first)
 468                 text->setCursorFromCoordinates(0, first);
 469         else if (text->cursor.y() > last)
 470                 text->setCursorFromCoordinates(0, last);
 471
 472         owner_->updateLayoutChoice();
 473 }
 474
 475
 476 void BufferView::Pimpl::scroll(int lines)
 477 {
 478         if (!buffer_)
 479                 return;
 480
 481         LyXText const * t = bv_->text;
 482         int const line_height = defaultRowHeight();
 483
 484         // The new absolute coordinate
 485         int new_top_y = top_y() + lines * line_height;
 486
 487         // Restrict to a valid value
 488         new_top_y = std::min(t->height - 4 * line_height, new_top_y);
 489         new_top_y = std::max(0, new_top_y);
 490
 491         scrollDocView(new_top_y);
 492
 493         // Update the scrollbar.
 494         workarea().setScrollbarParams(t->height, top_y(), defaultRowHeight());
 495 }
 496
 497
 498 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 499                                          key_modifier::state state)
 500 {
 501         bv_->owner()->getLyXFunc().processKeySym(key, state);
 502
 503         /* This is perhaps a bit of a hack. When we move
 504          * around, or type, it's nice to be able to see
 505          * the cursor immediately after the keypress. So
 506          * we reset the toggle timeout and force the visibility
 507          * of the cursor. Note we cannot do this inside
 508          * dispatch() itself, because that's called recursively.
 509          */
 510         if (available()) {
 511                 cursor_timeout.restart();
 512                 screen().showCursor(*bv_);
 513         }
 514 }
 515
 516
 517 void BufferView::Pimpl::selectionRequested()
 518 {
 519         static string sel;
 520
 521         if (!available())
 522                 return;
 523
 524         LyXText * text = bv_->getLyXText();
 525
 526         if (text->selection.set() &&
 527                 (!bv_->text->xsel_cache.set() ||
 528                  text->selection.start != bv_->text->xsel_cache.start ||
 529                  text->selection.end != bv_->text->xsel_cache.end))
 530         {
 531                 bv_->text->xsel_cache = text->selection;
 532                 sel = text->selectionAsString(*bv_->buffer(), false);
 533         } else if (!text->selection.set()) {
 534                 sel = string();
 535                 bv_->text->xsel_cache.set(false);
 536         }
 537         if (!sel.empty()) {
 538                 workarea().putClipboard(sel);
 539         }
 540 }
 541
 542
 543 void BufferView::Pimpl::selectionLost()
 544 {
 545         if (available()) {
 546                 screen().hideCursor();
 547                 bv_->getLyXText()->clearSelection();
 548                 bv_->text->xsel_cache.set(false);
 549         }
 550 }
 551
 552
 553 void BufferView::Pimpl::workAreaResize()
 554 {
 555         static int work_area_width;
 556         static int work_area_height;
 557
 558         bool const widthChange = workarea().workWidth() != work_area_width;
 559         bool const heightChange = workarea().workHeight() != work_area_height;
 560
 561         // update from work area
 562         work_area_width = workarea().workWidth();
 563         work_area_height = workarea().workHeight();
 564
 565         if (buffer_ != 0) {
 566                 if (widthChange) {
 567                         // The visible LyXView need a resize
 568                         resizeCurrentBuffer();
 569                 }
 570         }
 571
 572         if (widthChange || heightChange)
 573                 update();
 574
 575         // always make sure that the scrollbar is sane.
 576         updateScrollbar();
 577         owner_->updateLayoutChoice();
 578 }
 579
 580
 581 void BufferView::Pimpl::update()
 582 {
 583         //lyxerr << "BufferView::update()" << endl;
 584         // fix cursor coordinate cache in case something went wrong
 585
 586         // check needed to survive LyX startup
 587         if (bv_->getLyXText()) {
 588                 // update all 'visible' paragraphs
 589                 ParagraphList::iterator beg;
 590                 ParagraphList::iterator end;
 591                 getParsInRange(buffer_->paragraphs(),
 592                                top_y(), top_y() + workarea().workHeight(),
 593                                beg, end);
 594                 bv_->text->redoParagraphs(beg, end);
 595                 bv_->getLyXText()->redoCursor();
 596                 updateScrollbar();
 597         }
 598         screen().redraw(*bv_);
 599 }
 600
 601
 602 // Callback for cursor timer
 603 void BufferView::Pimpl::cursorToggle()
 604 {
 605         if (!buffer_) {
 606                 cursor_timeout.restart();
 607                 return;
 608         }
 609
 610         screen().toggleCursor(*bv_);
 611         cursor_timeout.restart();
 612 }
 613
 614
 615 bool BufferView::Pimpl::available() const
 616 {
 617         return buffer_ && bv_->text;
 618 }
 619
 620
 621 Change const BufferView::Pimpl::getCurrentChange()
 622 {
 623         if (!bv_->buffer()->params().tracking_changes)
 624                 return Change(Change::UNCHANGED);
 625
 626         LyXText * text = bv_->getLyXText();
 627
 628         if (!text->selection.set())
 629                 return Change(Change::UNCHANGED);
 630
 631         return text->getPar(text->selection.start)
 632                 ->lookupChangeFull(text->selection.start.pos());
 633 }
 634
 635
 636 void BufferView::Pimpl::savePosition(unsigned int i)
 637 {
 638         if (i >= saved_positions_num)
 639                 return;
 640         saved_positions[i] = Position(buffer_->fileName(),
 641                                       bv_->text->cursorPar()->id(),
 642                                       bv_->text->cursor.pos());
 643         if (i > 0)
 644                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 645 }
 646
 647
 648 void BufferView::Pimpl::restorePosition(unsigned int i)
 649 {
 650         if (i >= saved_positions_num)
 651                 return;
 652
 653         string const fname = saved_positions[i].filename;
 654
 655         bv_->text->clearSelection();
 656
 657         if (fname != buffer_->fileName()) {
 658                 Buffer * b = 0;
 659                 if (bufferlist.exists(fname))
 660                         b = bufferlist.getBuffer(fname);
 661                 else {
 662                         b = bufferlist.newBuffer(fname);
 663                         ::loadLyXFile(b, fname); // don't ask, just load it
 664                 }
 665                 if (b)
 666                         buffer(b);
 667         }
 668
 669         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 670         if (par == buffer_->par_iterator_end())
 671                 return;
 672
 673         bv_->text->setCursor(par.pit(),
 674                              min(par->size(), saved_positions[i].par_pos));
 675
 676         update();
 677         if (i > 0)
 678                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 679 }
 680
 681
 682 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 683 {
 684         return i < saved_positions_num && !saved_positions[i].filename.empty();
 685 }
 686
 687
 688 void BufferView::Pimpl::switchKeyMap()
 689 {
 690         if (!lyxrc.rtl_support)
 691                 return;
 692
 693         Intl & intl = owner_->getIntl();
 694         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 695                 if (intl.keymap == Intl::PRIMARY)
 696                         intl.KeyMapSec();
 697         } else {
 698                 if (intl.keymap == Intl::SECONDARY)
 699                         intl.KeyMapPrim();
 700         }
 701 }
 702
 703
 704 void BufferView::Pimpl::center()
 705 {
 706         LyXText * text = bv_->text;
 707
 708         text->clearSelection();
 709         int const half_height = workarea().workHeight() / 2;
 710         int new_y = std::max(0, text->cursor.y() - half_height);
 711
 712         // FIXME: look at this comment again ...
 713         // This updates top_y() but means the fitCursor() call
 714         // from the update(FITCUR) doesn't realise that we might
 715         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 716         // the scrollbar to be updated as it should, so we have
 717         // to do it manually. Any operation that does a center()
 718         // and also might have moved top_y() must make sure to call
 719         // updateScrollbar() currently. Never mind that this is a
 720         // pretty obfuscated way of updating t->top_y()
 721         top_y(new_y);
 722         update();
 723 }
 724
 725
 726 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 727 {
 728         workarea().putClipboard(stuff);
 729 }
 730
 731
 732 InsetOld * BufferView::Pimpl::getInsetByCode(InsetOld::Code code)
 733 {
 734 #if 0
 735         LyXCursor cursor = bv_->getLyXText()->cursor;
 736         Buffer::inset_iterator it =
 737                 find_if(Buffer::inset_iterator(
 738                         cursorPar(), cursor.pos()),
 739                         buffer_->inset_iterator_end(),
 740                         lyx::compare_memfun(&Inset::lyxCode, code));
 741         return it != buffer_->inset_iterator_end() ? (*it) : 0;
 742 #else
 743         // Ok, this is a little bit too brute force but it
 744         // should work for now. Better infrastructure is coming. (Lgb)
 745
 746         Buffer * b = bv_->buffer();
 747         LyXText * text =  bv_->getLyXText();
 748
 749         Buffer::inset_iterator beg = b->inset_iterator_begin();
 750         Buffer::inset_iterator end = b->inset_iterator_end();
 751
 752         bool cursorPar_seen = false;
 753
 754         for (; beg != end; ++beg) {
 755                 if (beg.getPar() == text->cursorPar()) {
 756                         cursorPar_seen = true;
 757                 }
 758                 if (cursorPar_seen) {
 759                         if (beg.getPar() == text->cursorPar()
 760                             && beg.getPos() >= text->cursor.pos()) {
 761                                 break;
 762                         } else if (beg.getPar() != text->cursorPar()) {
 763                                 break;
 764                         }
 765                 }
 766
 767         }
 768         if (beg != end) {
 769                 // Now find the first inset that matches code.
 770                 for (; beg != end; ++beg) {
 771                         if (beg->lyxCode() == code) {
 772                                 return &(*beg);
 773                         }
 774                 }
 775         }
 776         return 0;
 777 #endif
 778 }
 779
 780
 781 void BufferView::Pimpl::MenuInsertLyXFile(string const & filen)
 782 {
 783         string filename = filen;
 784
 785         if (filename.empty()) {
 786                 // Launch a file browser
 787                 string initpath = lyxrc.document_path;
 788
 789                 if (available()) {
 790                         string const trypath = owner_->buffer()->filePath();
 791                         // If directory is writeable, use this as default.
 792                         if (IsDirWriteable(trypath))
 793                                 initpath = trypath;
 794                 }
 795
 796                 FileDialog fileDlg(_("Select LyX document to insert"),
 797                         LFUN_FILE_INSERT,
 798                         make_pair(string(_("Documents|#o#O")),
 799                                   string(lyxrc.document_path)),
 800                         make_pair(string(_("Examples|#E#e")),
 801                                   string(AddPath(system_lyxdir(), "examples"))));
 802
 803                 FileDialog::Result result =
 804                         fileDlg.open(initpath,
 805                                        _("*.lyx| LyX Documents (*.lyx)"));
 806
 807                 if (result.first == FileDialog::Later)
 808                         return;
 809
 810                 filename = result.second;
 811
 812                 // check selected filename
 813                 if (filename.empty()) {
 814                         owner_->message(_("Canceled."));
 815                         return;
 816                 }
 817         }
 818
 819         // get absolute path of file and add ".lyx" to the filename if
 820         // necessary
 821         filename = FileSearch(string(), filename, "lyx");
 822
 823         string const disp_fn = MakeDisplayPath(filename);
 824         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 825         if (bv_->insertLyXFile(filename))
 826                 owner_->message(bformat(_("Document %1$s inserted."),
 827                                         disp_fn));
 828         else
 829                 owner_->message(bformat(_("Could not insert document %1$s"),
 830                                         disp_fn));
 831 }
 832
 833
 834 void BufferView::Pimpl::trackChanges()
 835 {
 836         Buffer * buf(bv_->buffer());
 837         bool const tracking(buf->params().tracking_changes);
 838
 839         if (!tracking) {
 840                 ParIterator const end = buf->par_iterator_end();
 841                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 842                         it->trackChanges();
 843                 buf->params().tracking_changes = true;
 844
 845                 // we cannot allow undos beyond the freeze point
 846                 buf->undostack().clear();
 847         } else {
 848                 update();
 849                 bv_->text->setCursor(0, 0);
 850 #warning changes FIXME
 851                 //moveCursorUpdate(false);
 852
 853                 bool found = lyx::find::findNextChange(bv_);
 854                 if (found) {
 855                         owner_->getDialogs().show("changes");
 856                         return;
 857                 }
 858
 859                 ParIterator const end = buf->par_iterator_end();
 860                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 861                         it->untrackChanges();
 862                 buf->params().tracking_changes = false;
 863         }
 864
 865         buf->redostack().clear();
 866 }
 867
 868 #warning remove me
 869 LCursor theTempCursor(0);
 870
 871 namespace {
 872
 873         InsetOld * insetFromCoords(BufferView * bv, int x, int y)
 874         {
 875                 LyXText * text = bv->text;
 876                 InsetOld * inset = 0;
 877                 theTempCursor = LCursor(bv);
 878                 while (true) {
 879                         InsetOld * inset_hit = text->checkInsetHit(x, y);
 880                         if (!inset_hit)
 881                                 break;
 882                         inset = inset_hit;
 883                         if (!inset_hit->descendable())
 884                                 break;
 885                         text = inset_hit->getText(0);
 886                         lyxerr << "Hit inset: " << inset << " at x: " << x
 887                                 << " text: " << text << " y: " << y << endl;
 888                         theTempCursor.push(static_cast<UpdatableInset*>(inset));
 889                 }
 890                 return inset;
 891         }
 892
 893 }
 894
 895
 896 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd)
 897 {
 898         switch (cmd.action) {
 899         case LFUN_MOUSE_PRESS:
 900         case LFUN_MOUSE_MOTION:
 901         case LFUN_MOUSE_RELEASE:
 902         case LFUN_MOUSE_DOUBLE:
 903         case LFUN_MOUSE_TRIPLE: {
 904                 // We pass those directly to the Bufferview, since
 905                 // otherwise selection handling breaks down
 906
 907                 // Doesn't go through lyxfunc, so we need to update
 908                 // the layout choice etc. ourselves
 909
 910                 // e.g. Qt mouse press when no buffer
 911                 if (!available())
 912                         return false;
 913
 914                 screen().hideCursor();
 915
 916                 // either the inset under the cursor or the surrounding LyXText will
 917                 // handle this event.
 918
 919                 // built temporary path to inset
 920                 InsetOld * inset = insetFromCoords(bv_, cmd.x, cmd.y);
 921                 FuncRequest cmd1(cmd, bv_);
 922                 DispatchResult res;
 923
 924                 // try to dispatch to that inset
 925                 if (inset) {
 926                         FuncRequest cmd2 = cmd1;
 927                         lyxerr << "dispatching action " << cmd2.action
 928                                 << " to inset " << inset << endl;
 929                         cmd2.x -= inset->x();
 930                         cmd2.y -= inset->y();
 931                         res = inset->dispatch(cmd2);
 932                         if (res.update()) {
 933                                 bv_->update();
 934                                 bv_->cursor().updatePos();
 935                         }
 936                         res.update(false);
 937                         switch (res.val()) {
 938                                 case FINISHED:
 939                                 case FINISHED_RIGHT:
 940                                 case FINISHED_UP:
 941                                 case FINISHED_DOWN:
 942                                         theTempCursor.pop();
 943                                         bv_->cursor() = theTempCursor;
 944                                         bv_->cursor().innerText()->setCursorFromCoordinates(cmd.x, top_y() + cmd.y);
 945                                         if (bv_->fitCursor())
 946                                                 bv_->update();
 947                                         return true;
 948                                 default:
 949                                         lyxerr << "not dispatched by inner inset val: " << res.val() << endl;
 950                                         break;
 951                         }
 952                 }
 953
 954                 // otherwise set cursor to surrounding LyXText
 955                 if (!res.dispatched()) {
 956                         lyxerr << "temp cursor is: " << theTempCursor << endl;
 957                         lyxerr << "dispatching " << cmd1
 958                                << " to surrounding LyXText "
 959                                << theTempCursor.innerText() << endl;
 960                         bv_->cursor() = theTempCursor;
 961                         res = bv_->cursor().innerText()->dispatch(cmd1);
 962                         if (bv_->fitCursor() || res.update())
 963                                 bv_->update();
 964
 965                         //return DispatchResult(true, true);
 966                 }
 967                 // see workAreaKeyPress
 968                 cursor_timeout.restart();
 969                 screen().showCursor(*bv_);
 970
 971                 // skip these when selecting
 972                 if (cmd.action != LFUN_MOUSE_MOTION) {
 973                         owner_->updateLayoutChoice();
 974                         owner_->updateToolbar();
 975                 }
 976
 977                 // slight hack: this is only called currently when we
 978                 // clicked somewhere, so we force through the display
 979                 // of the new status here.
 980                 owner_->clearMessage();
 981                 return true;
 982         }
 983
 984         default:
 985                 owner_->dispatch(cmd);
 986                 return true;
 987         }
 988 }
 989
 990
 991 bool BufferView::Pimpl::dispatch(FuncRequest const & ev_in)
 992 {
 993         // Make sure that the cached BufferView is correct.
 994         FuncRequest ev = ev_in;
 995         ev.setView(bv_);
 996
 997         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
 998                 << " action[" << ev.action << ']'
 999                 << " arg[" << ev.argument << ']'
1000                 << " x[" << ev.x << ']'
1001                 << " y[" << ev.y << ']'
1002                 << " button[" << ev.button() << ']'
1003                 << endl;
1004
1005         LyXTextClass const & tclass = buffer_->params().getLyXTextClass();
1006
1007         switch (ev.action) {
1008
1009         case LFUN_SCROLL_INSET:
1010                 // this is not handled here as this function is only active
1011                 // if we have a locking_inset and that one is (or contains)
1012                 // a tabular-inset
1013                 break;
1014
1015         case LFUN_FILE_INSERT:
1016                 MenuInsertLyXFile(ev.argument);
1017                 break;
1018
1019         case LFUN_FILE_INSERT_ASCII_PARA:
1020                 InsertAsciiFile(bv_, ev.argument, true);
1021                 break;
1022
1023         case LFUN_FILE_INSERT_ASCII:
1024                 InsertAsciiFile(bv_, ev.argument, false);
1025                 break;
1026
1027         case LFUN_FONT_STATE:
1028                 owner_->getLyXFunc().setMessage(currentState(bv_));
1029                 break;
1030
1031         case LFUN_INSERT_LABEL: {
1032                 // Try and generate a valid label
1033                 string const contents = ev.argument.empty() ?
1034                         getPossibleLabel(*bv_) : ev.argument;
1035                 InsetCommandParams icp("label", contents);
1036                 string data = InsetCommandMailer::params2string("label", icp);
1037                 owner_->getDialogs().show("label", data, 0);
1038                 break;
1039         }
1040
1041         case LFUN_BOOKMARK_SAVE:
1042                 savePosition(strToUnsignedInt(ev.argument));
1043                 break;
1044
1045         case LFUN_BOOKMARK_GOTO:
1046                 restorePosition(strToUnsignedInt(ev.argument));
1047                 break;
1048
1049         case LFUN_REF_GOTO: {
1050                 string label = ev.argument;
1051                 if (label.empty()) {
1052                         InsetRef * inset =
1053                                 static_cast<InsetRef*>(getInsetByCode(InsetOld::REF_CODE));
1054                         if (inset) {
1055                                 label = inset->getContents();
1056                                 savePosition(0);
1057                         }
1058                 }
1059
1060                 if (!label.empty())
1061                         bv_->gotoLabel(label);
1062         }
1063         break;
1064
1065         // --- accented characters ---------------------------
1066
1067         case LFUN_UMLAUT:
1068         case LFUN_CIRCUMFLEX:
1069         case LFUN_GRAVE:
1070         case LFUN_ACUTE:
1071         case LFUN_TILDE:
1072         case LFUN_CEDILLA:
1073         case LFUN_MACRON:
1074         case LFUN_DOT:
1075         case LFUN_UNDERDOT:
1076         case LFUN_UNDERBAR:
1077         case LFUN_CARON:
1078         case LFUN_SPECIAL_CARON:
1079         case LFUN_BREVE:
1080         case LFUN_TIE:
1081         case LFUN_HUNG_UMLAUT:
1082         case LFUN_CIRCLE:
1083         case LFUN_OGONEK:
1084                 if (ev.argument.empty()) {
1085                         // As always...
1086                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1087                 } else {
1088                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1089                         owner_->getIntl().getTransManager()
1090                                 .TranslateAndInsert(ev.argument[0], bv_->getLyXText());
1091                         update();
1092                 }
1093                 break;
1094
1095         case LFUN_MATH_MACRO:
1096         case LFUN_MATH_DELIM:
1097         case LFUN_INSERT_MATRIX:
1098         case LFUN_INSERT_MATH:
1099         case LFUN_MATH_IMPORT_SELECTION: // Imports LaTeX from the X selection
1100         case LFUN_MATH_DISPLAY:          // Open or create a displayed math inset
1101         case LFUN_MATH_MODE:             // Open or create an inlined math inset
1102                 mathDispatch(ev);
1103                 break;
1104
1105         case LFUN_INSET_APPLY: {
1106                 string const name = ev.getArg(0);
1107
1108                 InsetBase * inset = owner_->getDialogs().getOpenInset(name);
1109                 if (inset) {
1110                         // This works both for 'original' and 'mathed' insets.
1111                         // Note that the localDispatch performs update also.
1112                         FuncRequest fr(bv_, LFUN_INSET_MODIFY, ev.argument);
1113                         inset->dispatch(fr);
1114                 } else {
1115                         FuncRequest fr(bv_, LFUN_INSET_INSERT, ev.argument);
1116                         dispatch(fr);
1117                 }
1118         }
1119         break;
1120
1121         case LFUN_INSET_INSERT: {
1122                 InsetOld * inset = createInset(ev);
1123                 if (!inset || !insertInset(inset))
1124                         delete inset;
1125                 break;
1126         }
1127
1128         case LFUN_FLOAT_LIST:
1129                 if (tclass.floats().typeExist(ev.argument)) {
1130                         InsetOld * inset = new InsetFloatList(ev.argument);
1131                         if (!insertInset(inset, tclass.defaultLayoutName()))
1132                                 delete inset;
1133                 } else {
1134                         lyxerr << "Non-existent float type: "
1135                                << ev.argument << endl;
1136                 }
1137                 break;
1138
1139         case LFUN_LAYOUT_PARAGRAPH: {
1140                 string data;
1141                 params2string(*bv_->getLyXText()->cursorPar(), data);
1142                 data = "show\n" + data;
1143                 bv_->owner()->getDialogs().show("paragraph", data);
1144                 break;
1145         }
1146
1147         case LFUN_PARAGRAPH_UPDATE:
1148                 updateParagraphDialog();
1149                 break;
1150
1151         case LFUN_PARAGRAPH_APPLY:
1152                 setParagraphParams(*bv_, ev.argument);
1153                 break;
1154
1155         case LFUN_THESAURUS_ENTRY: {
1156                 string arg = ev.argument;
1157
1158                 if (arg.empty()) {
1159                         arg = bv_->getLyXText()->selectionAsString(*buffer_,
1160                                                                    false);
1161
1162                         // FIXME
1163                         if (arg.size() > 100 || arg.empty()) {
1164                                 // Get word or selection
1165                                 bv_->getLyXText()->selectWordWhenUnderCursor(lyx::WHOLE_WORD);
1166                                 arg = bv_->getLyXText()->selectionAsString(*buffer_, false);
1167                                 // FIXME: where is getLyXText()->unselect(bv_) ?
1168                         }
1169                 }
1170
1171                 bv_->owner()->getDialogs().show("thesaurus", arg);
1172                 break;
1173         }
1174
1175         case LFUN_TRACK_CHANGES:
1176                 trackChanges();
1177                 break;
1178
1179         case LFUN_MERGE_CHANGES:
1180                 owner_->getDialogs().show("changes");
1181                 break;
1182
1183         case LFUN_ACCEPT_ALL_CHANGES: {
1184                 bv_->text->setCursor(0, 0);
1185 #warning FIXME changes
1186                 //moveCursorUpdate(false);
1187
1188                 while (lyx::find::findNextChange(bv_))
1189                         bv_->getLyXText()->acceptChange();
1190
1191                 update();
1192                 break;
1193         }
1194
1195         case LFUN_REJECT_ALL_CHANGES: {
1196                 bv_->text->setCursor(0, 0);
1197 #warning FIXME changes
1198                 //moveCursorUpdate(false);
1199
1200                 while (lyx::find::findNextChange(bv_))
1201                         bv_->getLyXText()->rejectChange();
1202
1203                 update();
1204                 break;
1205         }
1206
1207         case LFUN_ACCEPT_CHANGE: {
1208                 bv_->getLyXText()->acceptChange();
1209                 update();
1210                 break;
1211         }
1212
1213         case LFUN_REJECT_CHANGE: {
1214                 bv_->getLyXText()->rejectChange();
1215                 update();
1216                 break;
1217         }
1218
1219         case LFUN_UNKNOWN_ACTION:
1220                 ev.errorMessage(N_("Unknown function!"));
1221                 break;
1222
1223         default:
1224                 return bv_->getLyXText()->dispatch(FuncRequest(ev, bv_)).dispatched();
1225         } // end of switch
1226
1227         return true;
1228 }
1229
1230
1231 bool BufferView::Pimpl::insertInset(InsetOld * inset, string const & lout)
1232 {
1233 #ifdef LOCK
1234         // if we are in a locking inset we should try to insert the
1235         // inset there otherwise this is a illegal function now
1236         if (bv_->theLockingInset()) {
1237                 if (bv_->theLockingInset()->insetAllowed(inset))
1238                         return bv_->theLockingInset()->insertInset(bv_, inset);
1239                 return false;
1240         }
1241 #endif
1242
1243         // not quite sure if we want this...
1244         bv_->text->recUndo(bv_->text->cursor.par());
1245         freezeUndo();
1246
1247         bv_->text->clearSelection();
1248         if (!lout.empty()) {
1249                 bv_->text->breakParagraph(bv_->buffer()->paragraphs());
1250
1251                 if (!bv_->text->cursorPar()->empty()) {
1252                         bv_->text->cursorLeft(bv_);
1253                         bv_->text->breakParagraph(bv_->buffer()->paragraphs());
1254                 }
1255
1256                 string lres = lout;
1257                 LyXTextClass const & tclass = buffer_->params().getLyXTextClass();
1258                 bool hasLayout = tclass.hasLayout(lres);
1259
1260                 bv_->text->setLayout(hasLayout ? lres : tclass.defaultLayoutName());
1261
1262                 bv_->text->setParagraph(
1263                                    VSpace(VSpace::NONE), VSpace(VSpace::NONE),
1264                                    Spacing(),
1265                                    LYX_ALIGN_LAYOUT,
1266                                    string(),
1267                                    0);
1268         }
1269         bv_->cursor().innerText()->insertInset(inset);
1270         update();
1271
1272         unFreezeUndo();
1273         return true;
1274 }
1275
1276
1277 bool BufferView::Pimpl::ChangeInsets(InsetOld::Code code,
1278                                      string const & from, string const & to)
1279 {
1280         bool need_update = false;
1281         LyXCursor cursor = bv_->text->cursor;
1282         LyXCursor tmpcursor = cursor;
1283         cursor.par(tmpcursor.par());
1284         cursor.pos(tmpcursor.pos());
1285
1286         ParIterator end = bv_->buffer()->par_iterator_end();
1287         for (ParIterator it = bv_->buffer()->par_iterator_begin();
1288              it != end; ++it) {
1289                 bool changed_inset = false;
1290                 for (InsetList::iterator it2 = it->insetlist.begin();
1291                      it2 != it->insetlist.end(); ++it2) {
1292                         if (it2->inset->lyxCode() == code) {
1293                                 InsetCommand * inset = static_cast<InsetCommand *>(it2->inset);
1294                                 if (inset->getContents() == from) {
1295                                         inset->setContents(to);
1296                                         changed_inset = true;
1297                                 }
1298                         }
1299                 }
1300                 if (changed_inset) {
1301                         need_update = true;
1302
1303                         // FIXME
1304
1305                         // The test it.size()==1 was needed to prevent crashes.
1306                         // How to set the cursor correctly when it.size()>1 ??
1307                         if (it.size() == 1) {
1308                                 bv_->text->setCursorIntern(bv_->text->parOffset(it.pit()), 0);
1309                                 bv_->text->redoParagraph(bv_->text->cursorPar());
1310                         }
1311                 }
1312         }
1313         bv_->text->setCursorIntern(cursor.par(), cursor.pos());
1314         return need_update;
1315 }
1316
1317
1318 void BufferView::Pimpl::updateParagraphDialog()
1319 {
1320         if (!bv_->owner()->getDialogs().visible("paragraph"))
1321                 return;
1322         Paragraph const & par = *bv_->getLyXText()->cursorPar();
1323         string data;
1324         params2string(par, data);
1325
1326         // Will the paragraph accept changes from the dialog?
1327         InsetOld * const inset = par.inInset();
1328         bool const accept =
1329                 !(inset && inset->forceDefaultParagraphs(inset));
1330
1331         data = "update " + tostr(accept) + '\n' + data;
1332         bv_->owner()->getDialogs().update("paragraph", data);
1333 }
1334
1335