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_->setText(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                 buffer_->text().init(bv_);
 312                 buffer_->text().textwidth_ = workarea().workWidth();
 313                 buffer_->text().fullRebreak();
 314
 315                 // If we don't have a text object for this, we make one
 316                 if (bv_->text() == 0)
 317                         resizeCurrentBuffer();
 318
 319                 // FIXME: needed when ?
 320                 fitCursor();
 321
 322                 // Buffer-dependent dialogs should be updated or
 323                 // hidden. This should go here because some dialogs (eg ToC)
 324                 // require bv_->text.
 325                 owner_->getDialogs().updateBufferDependent(true);
 326         } else {
 327                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 328                 owner_->getDialogs().hideBufferDependent();
 329         }
 330
 331         update();
 332         updateScrollbar();
 333         owner_->updateMenubar();
 334         owner_->updateToolbar();
 335         owner_->updateLayoutChoice();
 336         owner_->updateWindowTitle();
 337
 338         // Don't forget to update the Layout
 339         if (buffer_)
 340                 owner_->setLayout(bv_->text()->cursorPar()->layout()->name());
 341
 342         if (lyx::graphics::Previews::activated() && buffer_)
 343                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 344 }
 345
 346
 347 bool BufferView::Pimpl::fitCursor()
 348 {
 349         lyxerr << "BufferView::Pimpl::fitCursor." << endl;
 350         if (screen().fitCursor(bv_)) {
 351                 updateScrollbar();
 352                 return true;
 353         }
 354         return false;
 355 }
 356
 357
 358 void BufferView::Pimpl::redoCurrentBuffer()
 359 {
 360         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 361         if (buffer_ && bv_->text()) {
 362                 resizeCurrentBuffer();
 363                 updateScrollbar();
 364                 owner_->updateLayoutChoice();
 365         }
 366 }
 367
 368
 369 void BufferView::Pimpl::resizeCurrentBuffer()
 370 {
 371         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 372
 373         int par = -1;
 374         int selstartpar = -1;
 375         int selendpar = -1;
 376
 377         pos_type pos = 0;
 378         pos_type selstartpos = 0;
 379         pos_type selendpos = 0;
 380         bool selection = false;
 381         bool mark_set  = false;
 382
 383         owner_->busy(true);
 384
 385         owner_->message(_("Formatting document..."));
 386
 387         lyxerr << "### resizeCurrentBuffer: text " << bv_->text() << endl;
 388         if (!bv_->text())
 389                 return;
 390
 391         par = bv_->text()->cursor.par();
 392         pos = bv_->text()->cursor.pos();
 393         selstartpar = bv_->text()->selection.start.par();
 394         selstartpos = bv_->text()->selection.start.pos();
 395         selendpar = bv_->text()->selection.end.par();
 396         selendpos = bv_->text()->selection.end.pos();
 397         selection = bv_->text()->selection.set();
 398         mark_set = bv_->text()->selection.mark();
 399         bv_->text()->textwidth_ = bv_->workWidth();
 400         bv_->text()->fullRebreak();
 401         update();
 402
 403         if (par != -1) {
 404                 bv_->text()->selection.set(true);
 405                 // At this point just to avoid the Delete-Empty-Paragraph-
 406                 // Mechanism when setting the cursor.
 407                 bv_->text()->selection.mark(mark_set);
 408                 if (selection) {
 409                         bv_->text()->setCursor(selstartpar, selstartpos);
 410                         bv_->text()->selection.cursor = bv_->text()->cursor;
 411                         bv_->text()->setCursor(selendpar, selendpos);
 412                         bv_->text()->setSelection();
 413                         bv_->text()->setCursor(par, pos);
 414                 } else {
 415                         bv_->text()->setCursor(par, pos);
 416                         bv_->text()->selection.cursor = bv_->text()->cursor;
 417                         bv_->text()->selection.set(false);
 418                 }
 419         }
 420
 421         fitCursor();
 422
 423         switchKeyMap();
 424         owner_->busy(false);
 425
 426         // reset the "Formatting..." message
 427         owner_->clearMessage();
 428
 429         updateScrollbar();
 430 }
 431
 432
 433 void BufferView::Pimpl::updateScrollbar()
 434 {
 435         if (!bv_->text()) {
 436                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 437                 workarea().setScrollbarParams(0, 0, 0);
 438                 return;
 439         }
 440
 441         LyXText const & t = *bv_->text();
 442
 443         lyxerr[Debug::GUI] << "Updating scrollbar: h " << t.height << ", top_y() "
 444                 << top_y() << ", default height " << defaultRowHeight() << endl;
 445
 446         workarea().setScrollbarParams(t.height, top_y(), defaultRowHeight());
 447 }
 448
 449
 450 void BufferView::Pimpl::scrollDocView(int value)
 451 {
 452         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 453
 454         if (!buffer_)
 455                 return;
 456
 457         screen().hideCursor();
 458
 459         top_y(value);
 460         screen().redraw(*bv_);
 461
 462         if (!lyxrc.cursor_follows_scrollbar)
 463                 return;
 464
 465         int const height = defaultRowHeight();
 466         int const first = top_y() + height;
 467         int const last = top_y() + workarea().workHeight() - height;
 468
 469         LyXText * text = bv_->text();
 470         if (text->cursor.y() < first)
 471                 text->setCursorFromCoordinates(0, first);
 472         else if (text->cursor.y() > last)
 473                 text->setCursorFromCoordinates(0, last);
 474
 475         owner_->updateLayoutChoice();
 476 }
 477
 478
 479 void BufferView::Pimpl::scroll(int lines)
 480 {
 481         if (!buffer_)
 482                 return;
 483
 484         LyXText const * t = bv_->text();
 485         int const line_height = defaultRowHeight();
 486
 487         // The new absolute coordinate
 488         int new_top_y = top_y() + lines * line_height;
 489
 490         // Restrict to a valid value
 491         new_top_y = std::min(t->height - 4 * line_height, new_top_y);
 492         new_top_y = std::max(0, new_top_y);
 493
 494         scrollDocView(new_top_y);
 495
 496         // Update the scrollbar.
 497         workarea().setScrollbarParams(t->height, top_y(), defaultRowHeight());
 498 }
 499
 500
 501 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 502                                          key_modifier::state state)
 503 {
 504         bv_->owner()->getLyXFunc().processKeySym(key, state);
 505
 506         /* This is perhaps a bit of a hack. When we move
 507          * around, or type, it's nice to be able to see
 508          * the cursor immediately after the keypress. So
 509          * we reset the toggle timeout and force the visibility
 510          * of the cursor. Note we cannot do this inside
 511          * dispatch() itself, because that's called recursively.
 512          */
 513         if (available()) {
 514                 cursor_timeout.restart();
 515                 screen().showCursor(*bv_);
 516         }
 517 }
 518
 519
 520 void BufferView::Pimpl::selectionRequested()
 521 {
 522         static string sel;
 523
 524         if (!available())
 525                 return;
 526
 527         LyXText * text = bv_->getLyXText();
 528
 529         if (text->selection.set() &&
 530                 (!bv_->text()->xsel_cache.set() ||
 531                  text->selection.start != bv_->text()->xsel_cache.start ||
 532                  text->selection.end != bv_->text()->xsel_cache.end))
 533         {
 534                 bv_->text()->xsel_cache = text->selection;
 535                 sel = text->selectionAsString(*bv_->buffer(), false);
 536         } else if (!text->selection.set()) {
 537                 sel = string();
 538                 bv_->text()->xsel_cache.set(false);
 539         }
 540         if (!sel.empty()) {
 541                 workarea().putClipboard(sel);
 542         }
 543 }
 544
 545
 546 void BufferView::Pimpl::selectionLost()
 547 {
 548         if (available()) {
 549                 screen().hideCursor();
 550                 bv_->getLyXText()->clearSelection();
 551                 bv_->text()->xsel_cache.set(false);
 552         }
 553 }
 554
 555
 556 void BufferView::Pimpl::workAreaResize()
 557 {
 558         static int work_area_width;
 559         static int work_area_height;
 560
 561         bool const widthChange = workarea().workWidth() != work_area_width;
 562         bool const heightChange = workarea().workHeight() != work_area_height;
 563
 564         // update from work area
 565         work_area_width = workarea().workWidth();
 566         work_area_height = workarea().workHeight();
 567
 568         if (buffer_ != 0) {
 569                 if (widthChange) {
 570                         // The visible LyXView need a resize
 571                         resizeCurrentBuffer();
 572                 }
 573         }
 574
 575         if (widthChange || heightChange)
 576                 update();
 577
 578         // always make sure that the scrollbar is sane.
 579         updateScrollbar();
 580         owner_->updateLayoutChoice();
 581 }
 582
 583
 584 void BufferView::Pimpl::update()
 585 {
 586         //lyxerr << "BufferView::update()" << endl;
 587         // fix cursor coordinate cache in case something went wrong
 588
 589         // check needed to survive LyX startup
 590         if (bv_->getLyXText()) {
 591                 // update all 'visible' paragraphs
 592                 ParagraphList::iterator beg;
 593                 ParagraphList::iterator end;
 594                 getParsInRange(buffer_->paragraphs(),
 595                                top_y(), top_y() + workarea().workHeight(),
 596                                beg, end);
 597                 bv_->text()->redoParagraphs(beg, end);
 598                 bv_->getLyXText()->redoCursor();
 599                 updateScrollbar();
 600         }
 601         screen().redraw(*bv_);
 602 }
 603
 604
 605 // Callback for cursor timer
 606 void BufferView::Pimpl::cursorToggle()
 607 {
 608         if (!buffer_) {
 609                 cursor_timeout.restart();
 610                 return;
 611         }
 612
 613         screen().toggleCursor(*bv_);
 614         cursor_timeout.restart();
 615 }
 616
 617
 618 bool BufferView::Pimpl::available() const
 619 {
 620         return buffer_ && bv_->text();
 621 }
 622
 623
 624 Change const BufferView::Pimpl::getCurrentChange()
 625 {
 626         if (!bv_->buffer()->params().tracking_changes)
 627                 return Change(Change::UNCHANGED);
 628
 629         LyXText * text = bv_->getLyXText();
 630
 631         if (!text->selection.set())
 632                 return Change(Change::UNCHANGED);
 633
 634         return text->getPar(text->selection.start)
 635                 ->lookupChangeFull(text->selection.start.pos());
 636 }
 637
 638
 639 void BufferView::Pimpl::savePosition(unsigned int i)
 640 {
 641         if (i >= saved_positions_num)
 642                 return;
 643         saved_positions[i] = Position(buffer_->fileName(),
 644                                       bv_->text()->cursorPar()->id(),
 645                                       bv_->text()->cursor.pos());
 646         if (i > 0)
 647                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 648 }
 649
 650
 651 void BufferView::Pimpl::restorePosition(unsigned int i)
 652 {
 653         if (i >= saved_positions_num)
 654                 return;
 655
 656         string const fname = saved_positions[i].filename;
 657
 658         bv_->text()->clearSelection();
 659
 660         if (fname != buffer_->fileName()) {
 661                 Buffer * b = 0;
 662                 if (bufferlist.exists(fname))
 663                         b = bufferlist.getBuffer(fname);
 664                 else {
 665                         b = bufferlist.newBuffer(fname);
 666                         ::loadLyXFile(b, fname); // don't ask, just load it
 667                 }
 668                 if (b)
 669                         buffer(b);
 670         }
 671
 672         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 673         if (par == buffer_->par_iterator_end())
 674                 return;
 675
 676         bv_->text()->setCursor(par.pit(),
 677                              min(par->size(), saved_positions[i].par_pos));
 678
 679         if (i > 0)
 680                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 681 }
 682
 683
 684 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 685 {
 686         return i < saved_positions_num && !saved_positions[i].filename.empty();
 687 }
 688
 689
 690 void BufferView::Pimpl::switchKeyMap()
 691 {
 692         if (!lyxrc.rtl_support)
 693                 return;
 694
 695         Intl & intl = owner_->getIntl();
 696         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 697                 if (intl.keymap == Intl::PRIMARY)
 698                         intl.KeyMapSec();
 699         } else {
 700                 if (intl.keymap == Intl::SECONDARY)
 701                         intl.KeyMapPrim();
 702         }
 703 }
 704
 705
 706 void BufferView::Pimpl::center()
 707 {
 708         LyXText * text = bv_->text();
 709
 710         text->clearSelection();
 711         int const half_height = workarea().workHeight() / 2;
 712         int new_y = std::max(0, text->cursor.y() - half_height);
 713
 714         // FIXME: look at this comment again ...
 715         // This updates top_y() but means the fitCursor() call
 716         // from the update(FITCUR) doesn't realise that we might
 717         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 718         // the scrollbar to be updated as it should, so we have
 719         // to do it manually. Any operation that does a center()
 720         // and also might have moved top_y() must make sure to call
 721         // updateScrollbar() currently. Never mind that this is a
 722         // pretty obfuscated way of updating t->top_y()
 723         top_y(new_y);
 724 }
 725
 726
 727 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 728 {
 729         workarea().putClipboard(stuff);
 730 }
 731
 732
 733 InsetOld * BufferView::Pimpl::getInsetByCode(InsetOld::Code code)
 734 {
 735 #if 0
 736         LyXCursor cursor = bv_->getLyXText()->cursor;
 737         Buffer::inset_iterator it =
 738                 find_if(Buffer::inset_iterator(
 739                         cursorPar(), cursor.pos()),
 740                         buffer_->inset_iterator_end(),
 741                         lyx::compare_memfun(&Inset::lyxCode, code));
 742         return it != buffer_->inset_iterator_end() ? (*it) : 0;
 743 #else
 744         // Ok, this is a little bit too brute force but it
 745         // should work for now. Better infrastructure is coming. (Lgb)
 746
 747         Buffer * b = bv_->buffer();
 748         LyXText * text =  bv_->getLyXText();
 749
 750         Buffer::inset_iterator beg = b->inset_iterator_begin();
 751         Buffer::inset_iterator end = b->inset_iterator_end();
 752
 753         bool cursorPar_seen = false;
 754
 755         for (; beg != end; ++beg) {
 756                 if (beg.getPar() == text->cursorPar()) {
 757                         cursorPar_seen = true;
 758                 }
 759                 if (cursorPar_seen) {
 760                         if (beg.getPar() == text->cursorPar()
 761                             && beg.getPos() >= text->cursor.pos()) {
 762                                 break;
 763                         } else if (beg.getPar() != text->cursorPar()) {
 764                                 break;
 765                         }
 766                 }
 767
 768         }
 769         if (beg != end) {
 770                 // Now find the first inset that matches code.
 771                 for (; beg != end; ++beg) {
 772                         if (beg->lyxCode() == code) {
 773                                 return &(*beg);
 774                         }
 775                 }
 776         }
 777         return 0;
 778 #endif
 779 }
 780
 781
 782 void BufferView::Pimpl::MenuInsertLyXFile(string const & filen)
 783 {
 784         string filename = filen;
 785
 786         if (filename.empty()) {
 787                 // Launch a file browser
 788                 string initpath = lyxrc.document_path;
 789
 790                 if (available()) {
 791                         string const trypath = owner_->buffer()->filePath();
 792                         // If directory is writeable, use this as default.
 793                         if (IsDirWriteable(trypath))
 794                                 initpath = trypath;
 795                 }
 796
 797                 FileDialog fileDlg(_("Select LyX document to insert"),
 798                         LFUN_FILE_INSERT,
 799                         make_pair(string(_("Documents|#o#O")),
 800                                   string(lyxrc.document_path)),
 801                         make_pair(string(_("Examples|#E#e")),
 802                                   string(AddPath(system_lyxdir(), "examples"))));
 803
 804                 FileDialog::Result result =
 805                         fileDlg.open(initpath,
 806                                        _("*.lyx| LyX Documents (*.lyx)"));
 807
 808                 if (result.first == FileDialog::Later)
 809                         return;
 810
 811                 filename = result.second;
 812
 813                 // check selected filename
 814                 if (filename.empty()) {
 815                         owner_->message(_("Canceled."));
 816                         return;
 817                 }
 818         }
 819
 820         // get absolute path of file and add ".lyx" to the filename if
 821         // necessary
 822         filename = FileSearch(string(), filename, "lyx");
 823
 824         string const disp_fn = MakeDisplayPath(filename);
 825         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 826         if (bv_->insertLyXFile(filename))
 827                 owner_->message(bformat(_("Document %1$s inserted."),
 828                                         disp_fn));
 829         else
 830                 owner_->message(bformat(_("Could not insert document %1$s"),
 831                                         disp_fn));
 832 }
 833
 834
 835 void BufferView::Pimpl::trackChanges()
 836 {
 837         Buffer * buf(bv_->buffer());
 838         bool const tracking(buf->params().tracking_changes);
 839
 840         if (!tracking) {
 841                 ParIterator const end = buf->par_iterator_end();
 842                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 843                         it->trackChanges();
 844                 buf->params().tracking_changes = true;
 845
 846                 // we cannot allow undos beyond the freeze point
 847                 buf->undostack().clear();
 848         } else {
 849                 update();
 850                 bv_->text()->setCursor(0, 0);
 851 #warning changes FIXME
 852                 bool found = lyx::find::findNextChange(bv_);
 853                 if (found) {
 854                         owner_->getDialogs().show("changes");
 855                         return;
 856                 }
 857
 858                 ParIterator const end = buf->par_iterator_end();
 859                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 860                         it->untrackChanges();
 861                 buf->params().tracking_changes = false;
 862         }
 863
 864         buf->redostack().clear();
 865 }
 866
 867 #warning remove me
 868 LCursor theTempCursor(0);
 869
 870 namespace {
 871
 872         InsetOld * insetFromCoords(BufferView * bv, int x, int y)
 873         {
 874                 LyXText * text = bv->text();
 875                 InsetOld * inset = 0;
 876                 theTempCursor = LCursor(bv);
 877                 while (true) {
 878                         InsetOld * inset_hit = text->checkInsetHit(x, y);
 879                         if (!inset_hit) {
 880                                 lyxerr << "no further inset hit" << endl;
 881                                 break;
 882                         }
 883                         inset = inset_hit;
 884                         if (!inset_hit->descendable()) {
 885                                 lyxerr << "not descendable" << endl;
 886                                 break;
 887                         }
 888                         text = inset_hit->getText(0);
 889                         lyxerr << "Hit inset: " << inset << " at x: " << x
 890                                 << " text: " << text << " y: " << y << endl;
 891                         theTempCursor.push(static_cast<UpdatableInset*>(inset));
 892                 }
 893                 lyxerr << "theTempCursor: " << theTempCursor << endl;
 894                 return inset;
 895         }
 896
 897 }
 898
 899
 900 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd)
 901 {
 902         switch (cmd.action) {
 903         case LFUN_MOUSE_MOTION: {
 904                 FuncRequest cmd1(cmd, bv_);
 905                 UpdatableInset * inset = bv_->cursor().innerInset();
 906                 DispatchResult res;
 907                 if (inset) {
 908                         cmd1.x -= inset->x();
 909                         cmd1.y -= inset->y();
 910                         res = inset->dispatch(cmd1);
 911                 } else {
 912                         cmd1.y += bv_->top_y();
 913                         res = bv_->cursor().innerText()->dispatch(cmd1);
 914                 }
 915
 916                 if (bv_->fitCursor() || res.update()) {
 917                         bv_->update();
 918                         bv_->cursor().updatePos();
 919                 }
 920
 921                 return true;
 922         }
 923
 924         case LFUN_MOUSE_PRESS:
 925         case LFUN_MOUSE_RELEASE:
 926         case LFUN_MOUSE_DOUBLE:
 927         case LFUN_MOUSE_TRIPLE: {
 928                 // We pass those directly to the Bufferview, since
 929                 // otherwise selection handling breaks down
 930
 931                 // Doesn't go through lyxfunc, so we need to update
 932                 // the layout choice etc. ourselves
 933
 934                 // e.g. Qt mouse press when no buffer
 935                 if (!available())
 936                         return false;
 937
 938                 screen().hideCursor();
 939
 940                 // either the inset under the cursor or the surrounding LyXText will
 941                 // handle this event.
 942
 943                 // built temporary path to inset
 944                 InsetOld * inset = insetFromCoords(bv_, cmd.x, cmd.y);
 945                 FuncRequest cmd1(cmd, bv_);
 946                 DispatchResult res;
 947
 948                 // try to dispatch to that inset
 949                 if (inset) {
 950                         FuncRequest cmd2 = cmd1;
 951                         lyxerr << "dispatching action " << cmd2.action
 952                                << " to inset " << inset << endl;
 953                         cmd2.x -= inset->x();
 954                         cmd2.y -= inset->y();
 955                         res = inset->dispatch(cmd2);
 956                         if (res.update()) {
 957                                 bv_->update();
 958                                 bv_->cursor().updatePos();
 959                         }
 960                         res.update(false);
 961                         switch (res.val()) {
 962                                 case FINISHED:
 963                                 case FINISHED_RIGHT:
 964                                 case FINISHED_UP:
 965                                 case FINISHED_DOWN:
 966                                         theTempCursor.pop();
 967                                         bv_->cursor() = theTempCursor;
 968                                         bv_->cursor().innerText()->setCursorFromCoordinates(cmd.x, top_y() + cmd.y);
 969                                         if (bv_->fitCursor())
 970                                                 bv_->update();
 971                                         return true;
 972                                 default:
 973                                         lyxerr << "not dispatched by inner inset val: " << res.val() << endl;
 974                                         break;
 975                         }
 976                 }
 977
 978                 // otherwise set cursor to surrounding LyXText
 979                 if (!res.dispatched()) {
 980                         lyxerr << "temp cursor is: " << theTempCursor << endl;
 981                         lyxerr << "dispatching " << cmd1
 982                                << " to surrounding LyXText "
 983                                << theTempCursor.innerText() << endl;
 984                         bv_->cursor() = theTempCursor;
 985                         cmd1.y += bv_->top_y();
 986                         res = bv_->cursor().innerText()->dispatch(cmd1);
 987                         if (bv_->fitCursor() || res.update())
 988                                 bv_->update();
 989
 990                         //return DispatchResult(true, true);
 991                 }
 992                 // see workAreaKeyPress
 993                 cursor_timeout.restart();
 994                 screen().showCursor(*bv_);
 995
 996                 // skip these when selecting
 997                 if (cmd.action != LFUN_MOUSE_MOTION) {
 998                         owner_->updateLayoutChoice();
 999                         owner_->updateToolbar();
1000                 }
1001
1002                 // slight hack: this is only called currently when we
1003                 // clicked somewhere, so we force through the display
1004                 // of the new status here.
1005                 owner_->clearMessage();
1006                 return true;
1007         }
1008
1009         default:
1010                 owner_->dispatch(cmd);
1011                 return true;
1012         }
1013 }
1014
1015
1016 bool BufferView::Pimpl::dispatch(FuncRequest const & ev_in)
1017 {
1018         // Make sure that the cached BufferView is correct.
1019         FuncRequest ev = ev_in;
1020         ev.setView(bv_);
1021
1022         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
1023                 << " action[" << ev.action << ']'
1024                 << " arg[" << ev.argument << ']'
1025                 << " x[" << ev.x << ']'
1026                 << " y[" << ev.y << ']'
1027                 << " button[" << ev.button() << ']'
1028                 << endl;
1029
1030         LyXTextClass const & tclass = buffer_->params().getLyXTextClass();
1031
1032         switch (ev.action) {
1033
1034         case LFUN_SCROLL_INSET:
1035                 // this is not handled here as this function is only active
1036                 // if we have a locking_inset and that one is (or contains)
1037                 // a tabular-inset
1038                 break;
1039
1040         case LFUN_FILE_INSERT:
1041                 MenuInsertLyXFile(ev.argument);
1042                 break;
1043
1044         case LFUN_FILE_INSERT_ASCII_PARA:
1045                 InsertAsciiFile(bv_, ev.argument, true);
1046                 break;
1047
1048         case LFUN_FILE_INSERT_ASCII:
1049                 InsertAsciiFile(bv_, ev.argument, false);
1050                 break;
1051
1052         case LFUN_FONT_STATE:
1053                 owner_->getLyXFunc().setMessage(currentState(bv_));
1054                 break;
1055
1056         case LFUN_INSERT_LABEL: {
1057                 // Try and generate a valid label
1058                 string const contents = ev.argument.empty() ?
1059                         getPossibleLabel(*bv_) : ev.argument;
1060                 InsetCommandParams icp("label", contents);
1061                 string data = InsetCommandMailer::params2string("label", icp);
1062                 owner_->getDialogs().show("label", data, 0);
1063                 break;
1064         }
1065
1066         case LFUN_BOOKMARK_SAVE:
1067                 savePosition(strToUnsignedInt(ev.argument));
1068                 break;
1069
1070         case LFUN_BOOKMARK_GOTO:
1071                 restorePosition(strToUnsignedInt(ev.argument));
1072                 break;
1073
1074         case LFUN_REF_GOTO: {
1075                 string label = ev.argument;
1076                 if (label.empty()) {
1077                         InsetRef * inset =
1078                                 static_cast<InsetRef*>(getInsetByCode(InsetOld::REF_CODE));
1079                         if (inset) {
1080                                 label = inset->getContents();
1081                                 savePosition(0);
1082                         }
1083                 }
1084
1085                 if (!label.empty())
1086                         bv_->gotoLabel(label);
1087         }
1088         break;
1089
1090         // --- accented characters ---------------------------
1091
1092         case LFUN_UMLAUT:
1093         case LFUN_CIRCUMFLEX:
1094         case LFUN_GRAVE:
1095         case LFUN_ACUTE:
1096         case LFUN_TILDE:
1097         case LFUN_CEDILLA:
1098         case LFUN_MACRON:
1099         case LFUN_DOT:
1100         case LFUN_UNDERDOT:
1101         case LFUN_UNDERBAR:
1102         case LFUN_CARON:
1103         case LFUN_SPECIAL_CARON:
1104         case LFUN_BREVE:
1105         case LFUN_TIE:
1106         case LFUN_HUNG_UMLAUT:
1107         case LFUN_CIRCLE:
1108         case LFUN_OGONEK:
1109                 if (ev.argument.empty()) {
1110                         // As always...
1111                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1112                 } else {
1113                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1114                         owner_->getIntl().getTransManager()
1115                                 .TranslateAndInsert(ev.argument[0], bv_->getLyXText());
1116                         update();
1117                 }
1118                 break;
1119
1120         case LFUN_MATH_MACRO:
1121         case LFUN_MATH_DELIM:
1122         case LFUN_INSERT_MATRIX:
1123         case LFUN_INSERT_MATH:
1124         case LFUN_MATH_IMPORT_SELECTION: // Imports LaTeX from the X selection
1125         case LFUN_MATH_DISPLAY:          // Open or create a displayed math inset
1126         case LFUN_MATH_MODE:             // Open or create an inlined math inset
1127                 mathDispatch(ev);
1128                 break;
1129
1130         case LFUN_INSET_APPLY: {
1131 #warning is this code ever called?
1132                 // Remove if not triggered. Mail lyx-devel if triggered.
1133                 // This code was replaced by code in text3.C.
1134                 BOOST_ASSERT(false);
1135                 string const name = ev.getArg(0);
1136
1137                 InsetBase * inset = owner_->getDialogs().getOpenInset(name);
1138                 if (inset) {
1139                         // This works both for 'original' and 'mathed' insets.
1140                         // Note that the localDispatch performs update also.
1141                         FuncRequest fr(bv_, LFUN_INSET_MODIFY, ev.argument);
1142                         inset->dispatch(fr);
1143                 } else {
1144                         FuncRequest fr(bv_, LFUN_INSET_INSERT, ev.argument);
1145                         dispatch(fr);
1146                 }
1147         }
1148         break;
1149
1150         case LFUN_INSET_INSERT: {
1151                 // Same as above.
1152                 BOOST_ASSERT(false);
1153                 InsetOld * inset = createInset(ev);
1154                 if (!inset || !insertInset(inset))
1155                         delete inset;
1156                 break;
1157         }
1158
1159         case LFUN_FLOAT_LIST:
1160                 if (tclass.floats().typeExist(ev.argument)) {
1161                         InsetOld * inset = new InsetFloatList(ev.argument);
1162                         if (!insertInset(inset, tclass.defaultLayoutName()))
1163                                 delete inset;
1164                 } else {
1165                         lyxerr << "Non-existent float type: "
1166                                << ev.argument << endl;
1167                 }
1168                 break;
1169
1170         case LFUN_LAYOUT_PARAGRAPH: {
1171                 string data;
1172                 params2string(*bv_->getLyXText()->cursorPar(), data);
1173                 data = "show\n" + data;
1174                 bv_->owner()->getDialogs().show("paragraph", data);
1175                 break;
1176         }
1177
1178         case LFUN_PARAGRAPH_UPDATE:
1179                 updateParagraphDialog();
1180                 break;
1181
1182         case LFUN_PARAGRAPH_APPLY:
1183                 setParagraphParams(*bv_, ev.argument);
1184                 break;
1185
1186         case LFUN_THESAURUS_ENTRY: {
1187                 string arg = ev.argument;
1188
1189                 if (arg.empty()) {
1190                         arg = bv_->getLyXText()->selectionAsString(*buffer_,
1191                                                                    false);
1192
1193                         // FIXME
1194                         if (arg.size() > 100 || arg.empty()) {
1195                                 // Get word or selection
1196                                 bv_->getLyXText()->selectWordWhenUnderCursor(lyx::WHOLE_WORD);
1197                                 arg = bv_->getLyXText()->selectionAsString(*buffer_, false);
1198                                 // FIXME: where is getLyXText()->unselect(bv_) ?
1199                         }
1200                 }
1201
1202                 bv_->owner()->getDialogs().show("thesaurus", arg);
1203                 break;
1204         }
1205
1206         case LFUN_TRACK_CHANGES:
1207                 trackChanges();
1208                 break;
1209
1210         case LFUN_MERGE_CHANGES:
1211                 owner_->getDialogs().show("changes");
1212                 break;
1213
1214         case LFUN_ACCEPT_ALL_CHANGES: {
1215                 bv_->text()->setCursor(0, 0);
1216 #warning FIXME changes
1217                 while (lyx::find::findNextChange(bv_))
1218                         bv_->getLyXText()->acceptChange();
1219                 update();
1220                 break;
1221         }
1222
1223         case LFUN_REJECT_ALL_CHANGES: {
1224                 bv_->text()->setCursor(0, 0);
1225 #warning FIXME changes
1226                 while (lyx::find::findNextChange(bv_))
1227                         bv_->getLyXText()->rejectChange();
1228                 update();
1229                 break;
1230         }
1231
1232         case LFUN_ACCEPT_CHANGE: {
1233                 bv_->getLyXText()->acceptChange();
1234                 update();
1235                 break;
1236         }
1237
1238         case LFUN_REJECT_CHANGE: {
1239                 bv_->getLyXText()->rejectChange();
1240                 update();
1241                 break;
1242         }
1243
1244         case LFUN_UNKNOWN_ACTION:
1245                 ev.errorMessage(N_("Unknown function!"));
1246                 break;
1247
1248         default:
1249                 return bv_->getLyXText()->dispatch(FuncRequest(ev, bv_)).dispatched();
1250         } // end of switch
1251
1252         return true;
1253 }
1254
1255
1256 bool BufferView::Pimpl::insertInset(InsetOld * inset, string const & lout)
1257 {
1258 #ifdef LOCK
1259         // if we are in a locking inset we should try to insert the
1260         // inset there otherwise this is a illegal function now
1261         if (bv_->theLockingInset()) {
1262                 if (bv_->theLockingInset()->insetAllowed(inset))
1263                         return bv_->theLockingInset()->insertInset(bv_, inset);
1264                 return false;
1265         }
1266 #endif
1267
1268         // not quite sure if we want this...
1269         bv_->text()->recUndo(bv_->text()->cursor.par());
1270         freezeUndo();
1271
1272         bv_->text()->clearSelection();
1273         if (!lout.empty()) {
1274                 bv_->text()->breakParagraph(bv_->buffer()->paragraphs());
1275
1276                 if (!bv_->text()->cursorPar()->empty()) {
1277                         bv_->text()->cursorLeft(bv_);
1278                         bv_->text()->breakParagraph(bv_->buffer()->paragraphs());
1279                 }
1280
1281                 string lres = lout;
1282                 LyXTextClass const & tclass = buffer_->params().getLyXTextClass();
1283                 bool hasLayout = tclass.hasLayout(lres);
1284
1285                 bv_->text()->setLayout(hasLayout ? lres : tclass.defaultLayoutName());
1286                 bv_->text()->setParagraph(Spacing(), LYX_ALIGN_LAYOUT, string(), 0);
1287         }
1288         bv_->cursor().innerText()->insertInset(inset);
1289         unFreezeUndo();
1290         return true;
1291 }
1292
1293
1294 bool BufferView::Pimpl::ChangeInsets(InsetOld::Code code,
1295                                      string const & from, string const & to)
1296 {
1297         bool need_update = false;
1298         LyXCursor cursor = bv_->text()->cursor;
1299         LyXCursor tmpcursor = cursor;
1300         cursor.par(tmpcursor.par());
1301         cursor.pos(tmpcursor.pos());
1302
1303         ParIterator end = bv_->buffer()->par_iterator_end();
1304         for (ParIterator it = bv_->buffer()->par_iterator_begin();
1305              it != end; ++it) {
1306                 bool changed_inset = false;
1307                 for (InsetList::iterator it2 = it->insetlist.begin();
1308                      it2 != it->insetlist.end(); ++it2) {
1309                         if (it2->inset->lyxCode() == code) {
1310                                 InsetCommand * inset = static_cast<InsetCommand *>(it2->inset);
1311                                 if (inset->getContents() == from) {
1312                                         inset->setContents(to);
1313                                         changed_inset = true;
1314                                 }
1315                         }
1316                 }
1317                 if (changed_inset) {
1318                         need_update = true;
1319
1320                         // FIXME
1321
1322                         // The test it.size()==1 was needed to prevent crashes.
1323                         // How to set the cursor correctly when it.size()>1 ??
1324                         if (it.size() == 1) {
1325                                 bv_->text()->setCursorIntern(bv_->text()->parOffset(it.pit()), 0);
1326                                 bv_->text()->redoParagraph(bv_->text()->cursorPar());
1327                         }
1328                 }
1329         }
1330         bv_->text()->setCursorIntern(cursor.par(), cursor.pos());
1331         return need_update;
1332 }
1333
1334
1335 void BufferView::Pimpl::updateParagraphDialog()
1336 {
1337         if (!bv_->owner()->getDialogs().visible("paragraph"))
1338                 return;
1339         Paragraph const & par = *bv_->getLyXText()->cursorPar();
1340         string data;
1341         params2string(par, data);
1342
1343         // Will the paragraph accept changes from the dialog?
1344         InsetOld * const inset = par.inInset();
1345         bool const accept =
1346                 !(inset && inset->forceDefaultParagraphs(inset));
1347
1348         data = "update " + tostr(accept) + '\n' + data;
1349         bv_->owner()->getDialogs().update("paragraph", data);
1350 }