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         }
 362 }
 363
 364
 365 void BufferView::Pimpl::resizeCurrentBuffer()
 366 {
 367         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 368
 369         int par = -1;
 370         int selstartpar = -1;
 371         int selendpar = -1;
 372
 373         pos_type pos = 0;
 374         pos_type selstartpos = 0;
 375         pos_type selendpos = 0;
 376         bool selection = false;
 377         bool mark_set  = false;
 378
 379         owner_->busy(true);
 380
 381         owner_->message(_("Formatting document..."));
 382
 383         if (bv_->text) {
 384                 par = bv_->text->cursor.par();
 385                 pos = bv_->text->cursor.pos();
 386                 selstartpar = bv_->text->selection.start.par();
 387                 selstartpos = bv_->text->selection.start.pos();
 388                 selendpar = bv_->text->selection.end.par();
 389                 selendpos = bv_->text->selection.end.pos();
 390                 selection = bv_->text->selection.set();
 391                 mark_set = bv_->text->selection.mark();
 392                 bv_->text->fullRebreak();
 393                 update();
 394         } else {
 395                 bv_->text = new LyXText(bv_, 0, false, bv_->buffer()->paragraphs());
 396                 bv_->text->init(bv_);
 397         }
 398
 399         if (par != -1) {
 400                 bv_->text->selection.set(true);
 401                 // At this point just to avoid the Delete-Empty-Paragraph-
 402                 // Mechanism when setting the cursor.
 403                 bv_->text->selection.mark(mark_set);
 404                 if (selection) {
 405                         bv_->text->setCursor(selstartpar, selstartpos);
 406                         bv_->text->selection.cursor = bv_->text->cursor;
 407                         bv_->text->setCursor(selendpar, selendpos);
 408                         bv_->text->setSelection();
 409                         bv_->text->setCursor(par, pos);
 410                 } else {
 411                         bv_->text->setCursor(par, pos);
 412                         bv_->text->selection.cursor = bv_->text->cursor;
 413                         bv_->text->selection.set(false);
 414                 }
 415         }
 416
 417         fitCursor();
 418
 419         switchKeyMap();
 420         owner_->busy(false);
 421
 422         // reset the "Formatting..." message
 423         owner_->clearMessage();
 424
 425         updateScrollbar();
 426 }
 427
 428
 429 void BufferView::Pimpl::updateScrollbar()
 430 {
 431         if (!bv_->text) {
 432                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 433                 workarea().setScrollbarParams(0, 0, 0);
 434                 return;
 435         }
 436
 437         LyXText const & t = *bv_->text;
 438
 439         lyxerr[Debug::GUI] << "Updating scrollbar: h " << t.height << ", top_y() "
 440                 << top_y() << ", default height " << defaultRowHeight() << endl;
 441
 442         workarea().setScrollbarParams(t.height, top_y(), defaultRowHeight());
 443 }
 444
 445
 446 void BufferView::Pimpl::scrollDocView(int value)
 447 {
 448         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 449
 450         if (!buffer_)
 451                 return;
 452
 453         screen().hideCursor();
 454
 455         top_y(value);
 456         screen().redraw(*bv_);
 457
 458         if (!lyxrc.cursor_follows_scrollbar)
 459                 return;
 460
 461         int const height = defaultRowHeight();
 462         int const first = top_y() + height;
 463         int const last = top_y() + workarea().workHeight() - height;
 464
 465         LyXText * text = bv_->text;
 466         if (text->cursor.y() < first)
 467                 text->setCursorFromCoordinates(0, first);
 468         else if (text->cursor.y() > last)
 469                 text->setCursorFromCoordinates(0, last);
 470
 471         owner_->updateLayoutChoice();
 472 }
 473
 474
 475 void BufferView::Pimpl::scroll(int lines)
 476 {
 477         if (!buffer_)
 478                 return;
 479
 480         LyXText const * t = bv_->text;
 481         int const line_height = defaultRowHeight();
 482
 483         // The new absolute coordinate
 484         int new_top_y = top_y() + lines * line_height;
 485
 486         // Restrict to a valid value
 487         new_top_y = std::min(t->height - 4 * line_height, new_top_y);
 488         new_top_y = std::max(0, new_top_y);
 489
 490         scrollDocView(new_top_y);
 491
 492         // Update the scrollbar.
 493         workarea().setScrollbarParams(t->height, top_y(), defaultRowHeight());
 494 }
 495
 496
 497 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 498                                          key_modifier::state state)
 499 {
 500         bv_->owner()->getLyXFunc().processKeySym(key, state);
 501
 502         /* This is perhaps a bit of a hack. When we move
 503          * around, or type, it's nice to be able to see
 504          * the cursor immediately after the keypress. So
 505          * we reset the toggle timeout and force the visibility
 506          * of the cursor. Note we cannot do this inside
 507          * dispatch() itself, because that's called recursively.
 508          */
 509         if (available()) {
 510                 cursor_timeout.restart();
 511                 screen().showCursor(*bv_);
 512         }
 513 }
 514
 515
 516 void BufferView::Pimpl::selectionRequested()
 517 {
 518         static string sel;
 519
 520         if (!available())
 521                 return;
 522
 523         LyXText * text = bv_->getLyXText();
 524
 525         if (text->selection.set() &&
 526                 (!bv_->text->xsel_cache.set() ||
 527                  text->selection.start != bv_->text->xsel_cache.start ||
 528                  text->selection.end != bv_->text->xsel_cache.end))
 529         {
 530                 bv_->text->xsel_cache = text->selection;
 531                 sel = text->selectionAsString(*bv_->buffer(), false);
 532         } else if (!text->selection.set()) {
 533                 sel = string();
 534                 bv_->text->xsel_cache.set(false);
 535         }
 536         if (!sel.empty()) {
 537                 workarea().putClipboard(sel);
 538         }
 539 }
 540
 541
 542 void BufferView::Pimpl::selectionLost()
 543 {
 544         if (available()) {
 545                 screen().hideCursor();
 546                 bv_->getLyXText()->clearSelection();
 547                 bv_->text->xsel_cache.set(false);
 548         }
 549 }
 550
 551
 552 void BufferView::Pimpl::workAreaResize()
 553 {
 554         static int work_area_width;
 555         static int work_area_height;
 556
 557         bool const widthChange = workarea().workWidth() != work_area_width;
 558         bool const heightChange = workarea().workHeight() != work_area_height;
 559
 560         // update from work area
 561         work_area_width = workarea().workWidth();
 562         work_area_height = workarea().workHeight();
 563
 564         if (buffer_ != 0) {
 565                 if (widthChange) {
 566                         // The visible LyXView need a resize
 567                         resizeCurrentBuffer();
 568                 }
 569         }
 570
 571         if (widthChange || heightChange)
 572                 update();
 573
 574         // always make sure that the scrollbar is sane.
 575         updateScrollbar();
 576         owner_->updateLayoutChoice();
 577 }
 578
 579
 580 void BufferView::Pimpl::update()
 581 {
 582         //lyxerr << "BufferView::update()" << endl;
 583         // fix cursor coordinate cache in case something went wrong
 584
 585         // check needed to survive LyX startup
 586         if (bv_->getLyXText()) {
 587                 // update all 'visible' paragraphs
 588                 ParagraphList::iterator beg;
 589                 ParagraphList::iterator end;
 590                 getParsInRange(buffer_->paragraphs(),
 591                                top_y(), top_y() + workarea().workHeight(),
 592                                beg, end);
 593                 bv_->text->redoParagraphs(beg, end);
 594                 bv_->getLyXText()->redoCursor();
 595                 updateScrollbar();
 596         }
 597         screen().redraw(*bv_);
 598 }
 599
 600
 601 // Callback for cursor timer
 602 void BufferView::Pimpl::cursorToggle()
 603 {
 604         if (!buffer_) {
 605                 cursor_timeout.restart();
 606                 return;
 607         }
 608
 609         screen().toggleCursor(*bv_);
 610         cursor_timeout.restart();
 611 }
 612
 613
 614 bool BufferView::Pimpl::available() const
 615 {
 616         return buffer_ && bv_->text;
 617 }
 618
 619
 620 Change const BufferView::Pimpl::getCurrentChange()
 621 {
 622         if (!bv_->buffer()->params().tracking_changes)
 623                 return Change(Change::UNCHANGED);
 624
 625         LyXText * text = bv_->getLyXText();
 626
 627         if (!text->selection.set())
 628                 return Change(Change::UNCHANGED);
 629
 630         return text->getPar(text->selection.start)
 631                 ->lookupChangeFull(text->selection.start.pos());
 632 }
 633
 634
 635 void BufferView::Pimpl::savePosition(unsigned int i)
 636 {
 637         if (i >= saved_positions_num)
 638                 return;
 639         saved_positions[i] = Position(buffer_->fileName(),
 640                                       bv_->text->cursorPar()->id(),
 641                                       bv_->text->cursor.pos());
 642         if (i > 0)
 643                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 644 }
 645
 646
 647 void BufferView::Pimpl::restorePosition(unsigned int i)
 648 {
 649         if (i >= saved_positions_num)
 650                 return;
 651
 652         string const fname = saved_positions[i].filename;
 653
 654         bv_->text->clearSelection();
 655
 656         if (fname != buffer_->fileName()) {
 657                 Buffer * b = 0;
 658                 if (bufferlist.exists(fname))
 659                         b = bufferlist.getBuffer(fname);
 660                 else {
 661                         b = bufferlist.newBuffer(fname);
 662                         ::loadLyXFile(b, fname); // don't ask, just load it
 663                 }
 664                 if (b)
 665                         buffer(b);
 666         }
 667
 668         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 669         if (par == buffer_->par_iterator_end())
 670                 return;
 671
 672         bv_->text->setCursor(par.pit(),
 673                              min(par->size(), saved_positions[i].par_pos));
 674
 675         if (i > 0)
 676                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 677 }
 678
 679
 680 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 681 {
 682         return i < saved_positions_num && !saved_positions[i].filename.empty();
 683 }
 684
 685
 686 void BufferView::Pimpl::switchKeyMap()
 687 {
 688         if (!lyxrc.rtl_support)
 689                 return;
 690
 691         Intl & intl = owner_->getIntl();
 692         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 693                 if (intl.keymap == Intl::PRIMARY)
 694                         intl.KeyMapSec();
 695         } else {
 696                 if (intl.keymap == Intl::SECONDARY)
 697                         intl.KeyMapPrim();
 698         }
 699 }
 700
 701
 702 void BufferView::Pimpl::center()
 703 {
 704         LyXText * text = bv_->text;
 705
 706         text->clearSelection();
 707         int const half_height = workarea().workHeight() / 2;
 708         int new_y = std::max(0, text->cursor.y() - half_height);
 709
 710         // FIXME: look at this comment again ...
 711         // This updates top_y() but means the fitCursor() call
 712         // from the update(FITCUR) doesn't realise that we might
 713         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 714         // the scrollbar to be updated as it should, so we have
 715         // to do it manually. Any operation that does a center()
 716         // and also might have moved top_y() must make sure to call
 717         // updateScrollbar() currently. Never mind that this is a
 718         // pretty obfuscated way of updating t->top_y()
 719         top_y(new_y);
 720 }
 721
 722
 723 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 724 {
 725         workarea().putClipboard(stuff);
 726 }
 727
 728
 729 InsetOld * BufferView::Pimpl::getInsetByCode(InsetOld::Code code)
 730 {
 731 #if 0
 732         LyXCursor cursor = bv_->getLyXText()->cursor;
 733         Buffer::inset_iterator it =
 734                 find_if(Buffer::inset_iterator(
 735                         cursorPar(), cursor.pos()),
 736                         buffer_->inset_iterator_end(),
 737                         lyx::compare_memfun(&Inset::lyxCode, code));
 738         return it != buffer_->inset_iterator_end() ? (*it) : 0;
 739 #else
 740         // Ok, this is a little bit too brute force but it
 741         // should work for now. Better infrastructure is coming. (Lgb)
 742
 743         Buffer * b = bv_->buffer();
 744         LyXText * text =  bv_->getLyXText();
 745
 746         Buffer::inset_iterator beg = b->inset_iterator_begin();
 747         Buffer::inset_iterator end = b->inset_iterator_end();
 748
 749         bool cursorPar_seen = false;
 750
 751         for (; beg != end; ++beg) {
 752                 if (beg.getPar() == text->cursorPar()) {
 753                         cursorPar_seen = true;
 754                 }
 755                 if (cursorPar_seen) {
 756                         if (beg.getPar() == text->cursorPar()
 757                             && beg.getPos() >= text->cursor.pos()) {
 758                                 break;
 759                         } else if (beg.getPar() != text->cursorPar()) {
 760                                 break;
 761                         }
 762                 }
 763
 764         }
 765         if (beg != end) {
 766                 // Now find the first inset that matches code.
 767                 for (; beg != end; ++beg) {
 768                         if (beg->lyxCode() == code) {
 769                                 return &(*beg);
 770                         }
 771                 }
 772         }
 773         return 0;
 774 #endif
 775 }
 776
 777
 778 void BufferView::Pimpl::MenuInsertLyXFile(string const & filen)
 779 {
 780         string filename = filen;
 781
 782         if (filename.empty()) {
 783                 // Launch a file browser
 784                 string initpath = lyxrc.document_path;
 785
 786                 if (available()) {
 787                         string const trypath = owner_->buffer()->filePath();
 788                         // If directory is writeable, use this as default.
 789                         if (IsDirWriteable(trypath))
 790                                 initpath = trypath;
 791                 }
 792
 793                 FileDialog fileDlg(_("Select LyX document to insert"),
 794                         LFUN_FILE_INSERT,
 795                         make_pair(string(_("Documents|#o#O")),
 796                                   string(lyxrc.document_path)),
 797                         make_pair(string(_("Examples|#E#e")),
 798                                   string(AddPath(system_lyxdir(), "examples"))));
 799
 800                 FileDialog::Result result =
 801                         fileDlg.open(initpath,
 802                                        _("*.lyx| LyX Documents (*.lyx)"));
 803
 804                 if (result.first == FileDialog::Later)
 805                         return;
 806
 807                 filename = result.second;
 808
 809                 // check selected filename
 810                 if (filename.empty()) {
 811                         owner_->message(_("Canceled."));
 812                         return;
 813                 }
 814         }
 815
 816         // get absolute path of file and add ".lyx" to the filename if
 817         // necessary
 818         filename = FileSearch(string(), filename, "lyx");
 819
 820         string const disp_fn = MakeDisplayPath(filename);
 821         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 822         if (bv_->insertLyXFile(filename))
 823                 owner_->message(bformat(_("Document %1$s inserted."),
 824                                         disp_fn));
 825         else
 826                 owner_->message(bformat(_("Could not insert document %1$s"),
 827                                         disp_fn));
 828 }
 829
 830
 831 void BufferView::Pimpl::trackChanges()
 832 {
 833         Buffer * buf(bv_->buffer());
 834         bool const tracking(buf->params().tracking_changes);
 835
 836         if (!tracking) {
 837                 ParIterator const end = buf->par_iterator_end();
 838                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 839                         it->trackChanges();
 840                 buf->params().tracking_changes = true;
 841
 842                 // we cannot allow undos beyond the freeze point
 843                 buf->undostack().clear();
 844         } else {
 845                 update();
 846                 bv_->text->setCursor(0, 0);
 847 #warning changes FIXME
 848                 bool found = lyx::find::findNextChange(bv_);
 849                 if (found) {
 850                         owner_->getDialogs().show("changes");
 851                         return;
 852                 }
 853
 854                 ParIterator const end = buf->par_iterator_end();
 855                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 856                         it->untrackChanges();
 857                 buf->params().tracking_changes = false;
 858         }
 859
 860         buf->redostack().clear();
 861 }
 862
 863 #warning remove me
 864 LCursor theTempCursor(0);
 865
 866 namespace {
 867
 868         InsetOld * insetFromCoords(BufferView * bv, int x, int y)
 869         {
 870                 LyXText * text = bv->text;
 871                 InsetOld * inset = 0;
 872                 theTempCursor = LCursor(bv);
 873                 while (true) {
 874                         InsetOld * inset_hit = text->checkInsetHit(x, y);
 875                         if (!inset_hit) {
 876                                 lyxerr << "no further inset hit" << endl;
 877                                 break;
 878                         }
 879                         inset = inset_hit;
 880                         if (!inset_hit->descendable()) {
 881                                 lyxerr << "not descendable" << endl;
 882                                 break;
 883                         }
 884                         text = inset_hit->getText(0);
 885                         lyxerr << "Hit inset: " << inset << " at x: " << x
 886                                 << " text: " << text << " y: " << y << endl;
 887                         theTempCursor.push(static_cast<UpdatableInset*>(inset));
 888                 }
 889                 lyxerr << "theTempCursor: " << theTempCursor << endl;
 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_MOTION: {
 900                 FuncRequest cmd1(cmd, bv_);
 901                 UpdatableInset * inset = bv_->cursor().innerInset();
 902                 DispatchResult res;
 903                 if (inset) {
 904                         cmd1.x -= inset->x();
 905                         cmd1.y -= inset->y();
 906                         res = inset->dispatch(cmd1);
 907                 } else {
 908                         cmd1.y += bv_->top_y();
 909                         res = bv_->cursor().innerText()->dispatch(cmd1);
 910                 }
 911
 912                 if (bv_->fitCursor() || res.update()) {
 913                         bv_->update();
 914                         bv_->cursor().updatePos();
 915                 }
 916
 917                 return true;
 918         }
 919
 920         case LFUN_MOUSE_PRESS:
 921         case LFUN_MOUSE_RELEASE:
 922         case LFUN_MOUSE_DOUBLE:
 923         case LFUN_MOUSE_TRIPLE: {
 924                 // We pass those directly to the Bufferview, since
 925                 // otherwise selection handling breaks down
 926
 927                 // Doesn't go through lyxfunc, so we need to update
 928                 // the layout choice etc. ourselves
 929
 930                 // e.g. Qt mouse press when no buffer
 931                 if (!available())
 932                         return false;
 933
 934                 screen().hideCursor();
 935
 936                 // either the inset under the cursor or the surrounding LyXText will
 937                 // handle this event.
 938
 939                 // built temporary path to inset
 940                 InsetOld * inset = insetFromCoords(bv_, cmd.x, cmd.y);
 941                 FuncRequest cmd1(cmd, bv_);
 942                 DispatchResult res;
 943
 944                 // try to dispatch to that inset
 945                 if (inset) {
 946                         FuncRequest cmd2 = cmd1;
 947                         lyxerr << "dispatching action " << cmd2.action
 948                                << " to inset " << inset << endl;
 949                         cmd2.x -= inset->x();
 950                         cmd2.y -= inset->y();
 951                         res = inset->dispatch(cmd2);
 952                         if (res.update()) {
 953                                 bv_->update();
 954                                 bv_->cursor().updatePos();
 955                         }
 956                         res.update(false);
 957                         switch (res.val()) {
 958                                 case FINISHED:
 959                                 case FINISHED_RIGHT:
 960                                 case FINISHED_UP:
 961                                 case FINISHED_DOWN:
 962                                         theTempCursor.pop();
 963                                         bv_->cursor() = theTempCursor;
 964                                         bv_->cursor().innerText()->setCursorFromCoordinates(cmd.x, top_y() + cmd.y);
 965                                         if (bv_->fitCursor())
 966                                                 bv_->update();
 967                                         return true;
 968                                 default:
 969                                         lyxerr << "not dispatched by inner inset val: " << res.val() << endl;
 970                                         break;
 971                         }
 972                 }
 973
 974                 // otherwise set cursor to surrounding LyXText
 975                 if (!res.dispatched()) {
 976                         lyxerr << "temp cursor is: " << theTempCursor << endl;
 977                         lyxerr << "dispatching " << cmd1
 978                                << " to surrounding LyXText "
 979                                << theTempCursor.innerText() << endl;
 980                         bv_->cursor() = theTempCursor;
 981                         cmd1.y += bv_->top_y();
 982                         res = bv_->cursor().innerText()->dispatch(cmd1);
 983                         if (bv_->fitCursor() || res.update())
 984                                 bv_->update();
 985
 986                         //return DispatchResult(true, true);
 987                 }
 988                 // see workAreaKeyPress
 989                 cursor_timeout.restart();
 990                 screen().showCursor(*bv_);
 991
 992                 // skip these when selecting
 993                 if (cmd.action != LFUN_MOUSE_MOTION) {
 994                         owner_->updateLayoutChoice();
 995                         owner_->updateToolbar();
 996                 }
 997
 998                 // slight hack: this is only called currently when we
 999                 // clicked somewhere, so we force through the display
1000                 // of the new status here.
1001                 owner_->clearMessage();
1002                 return true;
1003         }
1004
1005         default:
1006                 owner_->dispatch(cmd);
1007                 return true;
1008         }
1009 }
1010
1011
1012 bool BufferView::Pimpl::dispatch(FuncRequest const & ev_in)
1013 {
1014         // Make sure that the cached BufferView is correct.
1015         FuncRequest ev = ev_in;
1016         ev.setView(bv_);
1017
1018         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
1019                 << " action[" << ev.action << ']'
1020                 << " arg[" << ev.argument << ']'
1021                 << " x[" << ev.x << ']'
1022                 << " y[" << ev.y << ']'
1023                 << " button[" << ev.button() << ']'
1024                 << endl;
1025
1026         LyXTextClass const & tclass = buffer_->params().getLyXTextClass();
1027
1028         switch (ev.action) {
1029
1030         case LFUN_SCROLL_INSET:
1031                 // this is not handled here as this function is only active
1032                 // if we have a locking_inset and that one is (or contains)
1033                 // a tabular-inset
1034                 break;
1035
1036         case LFUN_FILE_INSERT:
1037                 MenuInsertLyXFile(ev.argument);
1038                 break;
1039
1040         case LFUN_FILE_INSERT_ASCII_PARA:
1041                 InsertAsciiFile(bv_, ev.argument, true);
1042                 break;
1043
1044         case LFUN_FILE_INSERT_ASCII:
1045                 InsertAsciiFile(bv_, ev.argument, false);
1046                 break;
1047
1048         case LFUN_FONT_STATE:
1049                 owner_->getLyXFunc().setMessage(currentState(bv_));
1050                 break;
1051
1052         case LFUN_INSERT_LABEL: {
1053                 // Try and generate a valid label
1054                 string const contents = ev.argument.empty() ?
1055                         getPossibleLabel(*bv_) : ev.argument;
1056                 InsetCommandParams icp("label", contents);
1057                 string data = InsetCommandMailer::params2string("label", icp);
1058                 owner_->getDialogs().show("label", data, 0);
1059                 break;
1060         }
1061
1062         case LFUN_BOOKMARK_SAVE:
1063                 savePosition(strToUnsignedInt(ev.argument));
1064                 break;
1065
1066         case LFUN_BOOKMARK_GOTO:
1067                 restorePosition(strToUnsignedInt(ev.argument));
1068                 break;
1069
1070         case LFUN_REF_GOTO: {
1071                 string label = ev.argument;
1072                 if (label.empty()) {
1073                         InsetRef * inset =
1074                                 static_cast<InsetRef*>(getInsetByCode(InsetOld::REF_CODE));
1075                         if (inset) {
1076                                 label = inset->getContents();
1077                                 savePosition(0);
1078                         }
1079                 }
1080
1081                 if (!label.empty())
1082                         bv_->gotoLabel(label);
1083         }
1084         break;
1085
1086         // --- accented characters ---------------------------
1087
1088         case LFUN_UMLAUT:
1089         case LFUN_CIRCUMFLEX:
1090         case LFUN_GRAVE:
1091         case LFUN_ACUTE:
1092         case LFUN_TILDE:
1093         case LFUN_CEDILLA:
1094         case LFUN_MACRON:
1095         case LFUN_DOT:
1096         case LFUN_UNDERDOT:
1097         case LFUN_UNDERBAR:
1098         case LFUN_CARON:
1099         case LFUN_SPECIAL_CARON:
1100         case LFUN_BREVE:
1101         case LFUN_TIE:
1102         case LFUN_HUNG_UMLAUT:
1103         case LFUN_CIRCLE:
1104         case LFUN_OGONEK:
1105                 if (ev.argument.empty()) {
1106                         // As always...
1107                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1108                 } else {
1109                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1110                         owner_->getIntl().getTransManager()
1111                                 .TranslateAndInsert(ev.argument[0], bv_->getLyXText());
1112                         update();
1113                 }
1114                 break;
1115
1116         case LFUN_MATH_MACRO:
1117         case LFUN_MATH_DELIM:
1118         case LFUN_INSERT_MATRIX:
1119         case LFUN_INSERT_MATH:
1120         case LFUN_MATH_IMPORT_SELECTION: // Imports LaTeX from the X selection
1121         case LFUN_MATH_DISPLAY:          // Open or create a displayed math inset
1122         case LFUN_MATH_MODE:             // Open or create an inlined math inset
1123                 mathDispatch(ev);
1124                 break;
1125
1126         case LFUN_INSET_APPLY: {
1127 #warning is this code ever called?
1128                 // Remove if not triggered. Mail lyx-devel if triggered.
1129                 // This code was replaced by code in text3.C.
1130                 BOOST_ASSERT(false);
1131                 string const name = ev.getArg(0);
1132
1133                 InsetBase * inset = owner_->getDialogs().getOpenInset(name);
1134                 if (inset) {
1135                         // This works both for 'original' and 'mathed' insets.
1136                         // Note that the localDispatch performs update also.
1137                         FuncRequest fr(bv_, LFUN_INSET_MODIFY, ev.argument);
1138                         inset->dispatch(fr);
1139                 } else {
1140                         FuncRequest fr(bv_, LFUN_INSET_INSERT, ev.argument);
1141                         dispatch(fr);
1142                 }
1143         }
1144         break;
1145
1146         case LFUN_INSET_INSERT: {
1147                 // Same as above.
1148                 BOOST_ASSERT(false);
1149                 InsetOld * inset = createInset(ev);
1150                 if (!inset || !insertInset(inset))
1151                         delete inset;
1152                 break;
1153         }
1154
1155         case LFUN_FLOAT_LIST:
1156                 if (tclass.floats().typeExist(ev.argument)) {
1157                         InsetOld * inset = new InsetFloatList(ev.argument);
1158                         if (!insertInset(inset, tclass.defaultLayoutName()))
1159                                 delete inset;
1160                 } else {
1161                         lyxerr << "Non-existent float type: "
1162                                << ev.argument << endl;
1163                 }
1164                 break;
1165
1166         case LFUN_LAYOUT_PARAGRAPH: {
1167                 string data;
1168                 params2string(*bv_->getLyXText()->cursorPar(), data);
1169                 data = "show\n" + data;
1170                 bv_->owner()->getDialogs().show("paragraph", data);
1171                 break;
1172         }
1173
1174         case LFUN_PARAGRAPH_UPDATE:
1175                 updateParagraphDialog();
1176                 break;
1177
1178         case LFUN_PARAGRAPH_APPLY:
1179                 setParagraphParams(*bv_, ev.argument);
1180                 break;
1181
1182         case LFUN_THESAURUS_ENTRY: {
1183                 string arg = ev.argument;
1184
1185                 if (arg.empty()) {
1186                         arg = bv_->getLyXText()->selectionAsString(*buffer_,
1187                                                                    false);
1188
1189                         // FIXME
1190                         if (arg.size() > 100 || arg.empty()) {
1191                                 // Get word or selection
1192                                 bv_->getLyXText()->selectWordWhenUnderCursor(lyx::WHOLE_WORD);
1193                                 arg = bv_->getLyXText()->selectionAsString(*buffer_, false);
1194                                 // FIXME: where is getLyXText()->unselect(bv_) ?
1195                         }
1196                 }
1197
1198                 bv_->owner()->getDialogs().show("thesaurus", arg);
1199                 break;
1200         }
1201
1202         case LFUN_TRACK_CHANGES:
1203                 trackChanges();
1204                 break;
1205
1206         case LFUN_MERGE_CHANGES:
1207                 owner_->getDialogs().show("changes");
1208                 break;
1209
1210         case LFUN_ACCEPT_ALL_CHANGES: {
1211                 bv_->text->setCursor(0, 0);
1212 #warning FIXME changes
1213                 while (lyx::find::findNextChange(bv_))
1214                         bv_->getLyXText()->acceptChange();
1215                 update();
1216                 break;
1217         }
1218
1219         case LFUN_REJECT_ALL_CHANGES: {
1220                 bv_->text->setCursor(0, 0);
1221 #warning FIXME changes
1222                 while (lyx::find::findNextChange(bv_))
1223                         bv_->getLyXText()->rejectChange();
1224                 update();
1225                 break;
1226         }
1227
1228         case LFUN_ACCEPT_CHANGE: {
1229                 bv_->getLyXText()->acceptChange();
1230                 update();
1231                 break;
1232         }
1233
1234         case LFUN_REJECT_CHANGE: {
1235                 bv_->getLyXText()->rejectChange();
1236                 update();
1237                 break;
1238         }
1239
1240         case LFUN_UNKNOWN_ACTION:
1241                 ev.errorMessage(N_("Unknown function!"));
1242                 break;
1243
1244         default:
1245                 return bv_->getLyXText()->dispatch(FuncRequest(ev, bv_)).dispatched();
1246         } // end of switch
1247
1248         return true;
1249 }
1250
1251
1252 bool BufferView::Pimpl::insertInset(InsetOld * inset, string const & lout)
1253 {
1254 #ifdef LOCK
1255         // if we are in a locking inset we should try to insert the
1256         // inset there otherwise this is a illegal function now
1257         if (bv_->theLockingInset()) {
1258                 if (bv_->theLockingInset()->insetAllowed(inset))
1259                         return bv_->theLockingInset()->insertInset(bv_, inset);
1260                 return false;
1261         }
1262 #endif
1263
1264         // not quite sure if we want this...
1265         bv_->text->recUndo(bv_->text->cursor.par());
1266         freezeUndo();
1267
1268         bv_->text->clearSelection();
1269         if (!lout.empty()) {
1270                 bv_->text->breakParagraph(bv_->buffer()->paragraphs());
1271
1272                 if (!bv_->text->cursorPar()->empty()) {
1273                         bv_->text->cursorLeft(bv_);
1274                         bv_->text->breakParagraph(bv_->buffer()->paragraphs());
1275                 }
1276
1277                 string lres = lout;
1278                 LyXTextClass const & tclass = buffer_->params().getLyXTextClass();
1279                 bool hasLayout = tclass.hasLayout(lres);
1280
1281                 bv_->text->setLayout(hasLayout ? lres : tclass.defaultLayoutName());
1282
1283                 bv_->text->setParagraph(
1284                                    VSpace(VSpace::NONE), VSpace(VSpace::NONE),
1285                                    Spacing(),
1286                                    LYX_ALIGN_LAYOUT,
1287                                    string(),
1288                                    0);
1289         }
1290         bv_->cursor().innerText()->insertInset(inset);
1291         unFreezeUndo();
1292         return true;
1293 }
1294
1295
1296 bool BufferView::Pimpl::ChangeInsets(InsetOld::Code code,
1297                                      string const & from, string const & to)
1298 {
1299         bool need_update = false;
1300         LyXCursor cursor = bv_->text->cursor;
1301         LyXCursor tmpcursor = cursor;
1302         cursor.par(tmpcursor.par());
1303         cursor.pos(tmpcursor.pos());
1304
1305         ParIterator end = bv_->buffer()->par_iterator_end();
1306         for (ParIterator it = bv_->buffer()->par_iterator_begin();
1307              it != end; ++it) {
1308                 bool changed_inset = false;
1309                 for (InsetList::iterator it2 = it->insetlist.begin();
1310                      it2 != it->insetlist.end(); ++it2) {
1311                         if (it2->inset->lyxCode() == code) {
1312                                 InsetCommand * inset = static_cast<InsetCommand *>(it2->inset);
1313                                 if (inset->getContents() == from) {
1314                                         inset->setContents(to);
1315                                         changed_inset = true;
1316                                 }
1317                         }
1318                 }
1319                 if (changed_inset) {
1320                         need_update = true;
1321
1322                         // FIXME
1323
1324                         // The test it.size()==1 was needed to prevent crashes.
1325                         // How to set the cursor correctly when it.size()>1 ??
1326                         if (it.size() == 1) {
1327                                 bv_->text->setCursorIntern(bv_->text->parOffset(it.pit()), 0);
1328                                 bv_->text->redoParagraph(bv_->text->cursorPar());
1329                         }
1330                 }
1331         }
1332         bv_->text->setCursorIntern(cursor.par(), cursor.pos());
1333         return need_update;
1334 }
1335
1336
1337 void BufferView::Pimpl::updateParagraphDialog()
1338 {
1339         if (!bv_->owner()->getDialogs().visible("paragraph"))
1340                 return;
1341         Paragraph const & par = *bv_->getLyXText()->cursorPar();
1342         string data;
1343         params2string(par, data);
1344
1345         // Will the paragraph accept changes from the dialog?
1346         InsetOld * const inset = par.inInset();
1347         bool const accept =
1348                 !(inset && inset->forceDefaultParagraphs(inset));
1349
1350         data = "update " + tostr(accept) + '\n' + data;
1351         bv_->owner()->getDialogs().update("paragraph", data);
1352 }