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 "factory.h"
  29 #include "FloatList.h"
  30 #include "funcrequest.h"
  31 #include "gettext.h"
  32 #include "intl.h"
  33 #include "iterators.h"
  34 #include "lyx_cb.h" // added for Dispatch functions
  35 #include "lyx_main.h"
  36 #include "lyxfind.h"
  37 #include "lyxfunc.h"
  38 #include "lyxtext.h"
  39 #include "lyxrc.h"
  40 #include "lastfiles.h"
  41 #include "paragraph.h"
  42 #include "paragraph_funcs.h"
  43 #include "ParagraphParameters.h"
  44 #include "TextCache.h"
  45 #include "undo_funcs.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::bold;
  71 using bv_funcs::code;
  72 using bv_funcs::currentState;
  73 using bv_funcs::emph;
  74 using bv_funcs::fontSize;
  75 using bv_funcs::lang;
  76 using bv_funcs::noun;
  77 using bv_funcs::roman;
  78 using bv_funcs::sans;
  79 using bv_funcs::styleReset;
  80 using bv_funcs::underline;
  81
  82 using lyx::pos_type;
  83
  84 using lyx::support::AddPath;
  85 using lyx::support::bformat;
  86 using lyx::support::FileSearch;
  87 using lyx::support::IsDirWriteable;
  88 using lyx::support::MakeDisplayPath;
  89 using lyx::support::strToUnsignedInt;
  90 using lyx::support::system_lyxdir;
  91
  92 using std::endl;
  93 using std::make_pair;
  94 using std::min;
  95 using std::string;
  96
  97
  98 extern BufferList bufferlist;
  99
 100
 101 namespace {
 102
 103 unsigned int const saved_positions_num = 20;
 104
 105 // All the below connection objects are needed because of a bug in some
 106 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
 107 // to these connections we avoid a segfault upon startup, and also at exit.
 108 // (Lgb)
 109
 110 boost::signals::connection dispatchcon;
 111 boost::signals::connection timecon;
 112 boost::signals::connection doccon;
 113 boost::signals::connection resizecon;
 114 boost::signals::connection kpresscon;
 115 boost::signals::connection selectioncon;
 116 boost::signals::connection lostcon;
 117
 118
 119 } // anon namespace
 120
 121
 122 BufferView::Pimpl::Pimpl(BufferView * bv, LyXView * owner,
 123              int xpos, int ypos, int width, int height)
 124         : bv_(bv), owner_(owner), buffer_(0), cursor_timeout(400),
 125           using_xterm_cursor(false)
 126 {
 127         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 128         screen_.reset(LyXScreenFactory::create(workarea()));
 129
 130         // Setup the signals
 131         doccon = workarea().scrollDocView
 132                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 133         resizecon = workarea().workAreaResize
 134                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 135         dispatchcon = workarea().dispatch
 136                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 137         kpresscon = workarea().workAreaKeyPress
 138                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 139         selectioncon = workarea().selectionRequested
 140                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 141         lostcon = workarea().selectionLost
 142                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 143
 144         timecon = cursor_timeout.timeout
 145                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 146         cursor_timeout.start();
 147         saved_positions.resize(saved_positions_num);
 148 }
 149
 150
 151 void BufferView::Pimpl::addError(ErrorItem const & ei)
 152 {
 153         errorlist_.push_back(ei);
 154 }
 155
 156
 157 void BufferView::Pimpl::showReadonly(bool)
 158 {
 159         owner_->updateWindowTitle();
 160         owner_->getDialogs().updateBufferDependent(false);
 161 }
 162
 163
 164 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 165 {
 166         if (errorConnection_.connected())
 167                 disconnectBuffer();
 168
 169         errorConnection_ = buf.error.connect(boost::bind(&BufferView::Pimpl::addError, this, _1));
 170         messageConnection_ = buf.message.connect(boost::bind(&LyXView::message, owner_, _1));
 171         busyConnection_ = buf.busy.connect(boost::bind(&LyXView::busy, owner_, _1));
 172         titleConnection_ = buf.updateTitles.connect(boost::bind(&LyXView::updateWindowTitle, owner_));
 173         timerConnection_ = buf.resetAutosaveTimers.connect(boost::bind(&LyXView::resetAutosaveTimer, owner_));
 174         readonlyConnection_ = buf.readonly.connect(boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 175         closingConnection_ = buf.closing.connect(boost::bind(&BufferView::Pimpl::buffer, this, (Buffer *)0));
 176 }
 177
 178
 179 void BufferView::Pimpl::disconnectBuffer()
 180 {
 181         errorConnection_.disconnect();
 182         messageConnection_.disconnect();
 183         busyConnection_.disconnect();
 184         titleConnection_.disconnect();
 185         timerConnection_.disconnect();
 186         readonlyConnection_.disconnect();
 187         closingConnection_.disconnect();
 188 }
 189
 190
 191 bool BufferView::Pimpl::newFile(string const & filename,
 192                                 string const & tname,
 193                                 bool isNamed)
 194 {
 195         Buffer * b = ::newFile(filename, tname, isNamed);
 196         buffer(b);
 197         return true;
 198 }
 199
 200
 201 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 202 {
 203         // get absolute path of file and add ".lyx" to the filename if
 204         // necessary
 205         string s = FileSearch(string(), filename, "lyx");
 206
 207         bool const found = !s.empty();
 208
 209         if (!found)
 210                 s = filename;
 211
 212         // file already open?
 213         if (bufferlist.exists(s)) {
 214                 string const file = MakeDisplayPath(s, 20);
 215                 string text = bformat(_("The document %1$s is already "
 216                                         "loaded.\n\nDo you want to revert "
 217                                         "to the saved version?"), file);
 218                 int const ret = Alert::prompt(_("Revert to saved document?"),
 219                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 220
 221                 if (ret != 0) {
 222                         buffer(bufferlist.getBuffer(s));
 223                         return true;
 224                 } else {
 225                         // FIXME: should be LFUN_REVERT
 226                         if (!bufferlist.close(bufferlist.getBuffer(s), false))
 227                                 return false;
 228                         // Fall through to new load. (Asger)
 229                 }
 230         }
 231
 232         Buffer * b;
 233
 234         if (found) {
 235                 b = bufferlist.newBuffer(s);
 236                 connectBuffer(*b);
 237                 if (!::loadLyXFile(b, s)) {
 238                         bufferlist.release(b);
 239                         return false;
 240                 }
 241         } else {
 242                 string text = bformat(_("The document %1$s does not yet "
 243                                         "exist.\n\nDo you want to create "
 244                                         "a new document?"), s);
 245                 int const ret = Alert::prompt(_("Create new document?"),
 246                          text, 0, 1, _("&Create"), _("Cancel"));
 247
 248                 if (ret == 0)
 249                         b = ::newFile(s, string(), true);
 250                 else
 251                         return false;
 252         }
 253
 254         buffer(b);
 255         bv_->showErrorList(_("Parse"));
 256
 257         if (tolastfiles)
 258                 lastfiles->newFile(b->fileName());
 259
 260         return true;
 261 }
 262
 263
 264 WorkArea & BufferView::Pimpl::workarea() const
 265 {
 266         return *workarea_.get();
 267 }
 268
 269
 270 LyXScreen & BufferView::Pimpl::screen() const
 271 {
 272         return *screen_.get();
 273 }
 274
 275
 276 Painter & BufferView::Pimpl::painter() const
 277 {
 278         return workarea().getPainter();
 279 }
 280
 281
 282 void BufferView::Pimpl::top_y(int y)
 283 {
 284         top_y_ = y;
 285 }
 286
 287
 288 int BufferView::Pimpl::top_y() const
 289 {
 290         return top_y_;
 291 }
 292
 293
 294 void BufferView::Pimpl::buffer(Buffer * b)
 295 {
 296         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 297                             << b << ')' << endl;
 298         if (buffer_) {
 299                 disconnectBuffer();
 300                 // Put the old text into the TextCache, but
 301                 // only if the buffer is still loaded.
 302                 // Also set the owner of the test to 0
 303                 //              bv_->text->owner(0);
 304                 textcache.add(buffer_, workarea().workWidth(), bv_->text);
 305                 if (lyxerr.debugging())
 306                         textcache.show(lyxerr, "BufferView::buffer");
 307
 308                 bv_->text = 0;
 309         }
 310
 311         // set current buffer
 312         buffer_ = b;
 313
 314         top_y_ = 0;
 315
 316         // if we're quitting lyx, don't bother updating stuff
 317         if (quitting)
 318                 return;
 319
 320         // if we are closing the buffer, use the first buffer as current
 321         if (!buffer_)
 322                 buffer_ = bufferlist.first();
 323
 324         if (buffer_) {
 325                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 326                 connectBuffer(*buffer_);
 327
 328                 // If we don't have a text object for this, we make one
 329                 if (bv_->text == 0)
 330                         resizeCurrentBuffer();
 331
 332                 // FIXME: needed when ?
 333                 top_y(screen().topCursorVisible(bv_->text));
 334
 335                 // Buffer-dependent dialogs should be updated or
 336                 // hidden. This should go here because some dialogs (eg ToC)
 337                 // require bv_->text.
 338                 owner_->getDialogs().updateBufferDependent(true);
 339         } else {
 340                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 341                 owner_->getDialogs().hideBufferDependent();
 342
 343                 // Also remove all remaining text's from the testcache.
 344                 // (there should not be any!) (if there is any it is a
 345                 // bug!)
 346                 if (lyxerr.debugging())
 347                         textcache.show(lyxerr, "buffer delete all");
 348                 textcache.clear();
 349         }
 350
 351         update();
 352         updateScrollbar();
 353         owner_->updateMenubar();
 354         owner_->updateToolbar();
 355         owner_->updateLayoutChoice();
 356         owner_->updateWindowTitle();
 357
 358         if (buffer_) {
 359                 // Don't forget to update the Layout
 360                 string const layoutname =
 361                         bv_->text->cursorPar()->layout()->name();
 362                 owner_->setLayout(layoutname);
 363         }
 364
 365         if (lyx::graphics::Previews::activated() && buffer_)
 366                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 367 }
 368
 369
 370 bool BufferView::Pimpl::fitCursor()
 371 {
 372         bool ret;
 373
 374         if (bv_->theLockingInset()) {
 375                 bv_->theLockingInset()->fitInsetCursor(bv_);
 376                 ret = true;
 377         } else {
 378                 ret = screen().fitCursor(bv_->text, bv_);
 379         }
 380
 381         //dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
 382
 383         // We need to always update, in case we did a
 384         // paste and we stayed anchored to a row, but
 385         // the actual height of the doc changed ...
 386         updateScrollbar();
 387         return ret;
 388 }
 389
 390
 391 void BufferView::Pimpl::redoCurrentBuffer()
 392 {
 393         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 394         if (buffer_ && bv_->text) {
 395                 resizeCurrentBuffer();
 396                 updateScrollbar();
 397                 owner_->updateLayoutChoice();
 398                 update();
 399         }
 400 }
 401
 402
 403 void BufferView::Pimpl::resizeCurrentBuffer()
 404 {
 405         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 406
 407         int par = -1;
 408         int selstartpar = -1;
 409         int selendpar = -1;
 410         UpdatableInset * the_locking_inset = 0;
 411
 412         pos_type pos = 0;
 413         pos_type selstartpos = 0;
 414         pos_type selendpos = 0;
 415         bool selection = false;
 416         bool mark_set  = false;
 417
 418         owner_->busy(true);
 419
 420         owner_->message(_("Formatting document..."));
 421
 422         if (bv_->text) {
 423                 par = bv_->text->cursor.par();
 424                 pos = bv_->text->cursor.pos();
 425                 selstartpar = bv_->text->selection.start.par();
 426                 selstartpos = bv_->text->selection.start.pos();
 427                 selendpar = bv_->text->selection.end.par();
 428                 selendpos = bv_->text->selection.end.pos();
 429                 selection = bv_->text->selection.set();
 430                 mark_set = bv_->text->selection.mark();
 431                 the_locking_inset = bv_->theLockingInset();
 432                 bv_->text->fullRebreak();
 433                 update();
 434         } else {
 435                 lyxerr << "text not available!" << endl;
 436                 // See if we have a text in TextCache that fits
 437                 // the new buffer_ with the correct width.
 438                 bv_->text = textcache.findFit(buffer_, workarea().workWidth());
 439                 if (bv_->text) {
 440                         lyxerr << "text in cache!" << endl;
 441                         if (lyxerr.debugging()) {
 442                                 lyxerr << "Found a LyXText that fits:" << endl;
 443                                 textcache.show(lyxerr, make_pair(buffer_, make_pair(workarea().workWidth(), bv_->text)));
 444                         }
 445                         // Set the owner of the newly found text
 446                         //      bv_->text->owner(bv_);
 447                         if (lyxerr.debugging())
 448                                 textcache.show(lyxerr, "resizeCurrentBuffer");
 449                 } else {
 450                         lyxerr << "no text in cache!" << endl;
 451                         bv_->text = new LyXText(bv_, 0, false, bv_->buffer()->paragraphs());
 452                         bv_->text->init(bv_);
 453                 }
 454         }
 455
 456 #warning does not help much
 457         //bv_->text->redoParagraphs(bv_->text->ownerParagraphs().begin(),
 458         //      bv_->text->ownerParagraphs().end());
 459
 460         if (par != -1) {
 461                 bv_->text->selection.set(true);
 462                 // At this point just to avoid the Delete-Empty-Paragraph-
 463                 // Mechanism when setting the cursor.
 464                 bv_->text->selection.mark(mark_set);
 465                 if (selection) {
 466                         bv_->text->setCursor(selstartpar, selstartpos);
 467                         bv_->text->selection.cursor = bv_->text->cursor;
 468                         bv_->text->setCursor(selendpar, selendpos);
 469                         bv_->text->setSelection();
 470                         bv_->text->setCursor(par, pos);
 471                 } else {
 472                         bv_->text->setCursor(par, pos);
 473                         bv_->text->selection.cursor = bv_->text->cursor;
 474                         bv_->text->selection.set(false);
 475                 }
 476                 // remake the inset locking
 477                 bv_->theLockingInset(the_locking_inset);
 478         }
 479
 480         top_y(screen().topCursorVisible(bv_->text));
 481
 482         switchKeyMap();
 483         owner_->busy(false);
 484
 485         // reset the "Formatting..." message
 486         owner_->clearMessage();
 487
 488         updateScrollbar();
 489 }
 490
 491
 492 void BufferView::Pimpl::updateScrollbar()
 493 {
 494         if (!bv_->text) {
 495                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 496                 workarea().setScrollbarParams(0, 0, 0);
 497                 return;
 498         }
 499
 500         LyXText const & t = *bv_->text;
 501
 502         lyxerr[Debug::GUI] << "Updating scrollbar: h " << t.height << ", top_y() "
 503                 << top_y() << ", default height " << defaultRowHeight() << endl;
 504
 505         workarea().setScrollbarParams(t.height, top_y(), defaultRowHeight());
 506 }
 507
 508
 509 void BufferView::Pimpl::scrollDocView(int value)
 510 {
 511         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 512
 513         if (!buffer_)
 514                 return;
 515
 516         screen().hideCursor();
 517
 518         top_y(value);
 519         screen().redraw(*bv_);
 520
 521         if (!lyxrc.cursor_follows_scrollbar)
 522                 return;
 523
 524         int const height = defaultRowHeight();
 525         int const first = top_y() + height;
 526         int const last = top_y() + workarea().workHeight() - height;
 527
 528         LyXText * text = bv_->text;
 529         if (text->cursor.y() < first)
 530                 text->setCursorFromCoordinates(0, first);
 531         else if (text->cursor.y() > last)
 532                 text->setCursorFromCoordinates(0, last);
 533
 534         owner_->updateLayoutChoice();
 535 }
 536
 537
 538 void BufferView::Pimpl::scroll(int lines)
 539 {
 540         if (!buffer_) {
 541                 return;
 542         }
 543
 544         LyXText const * t = bv_->text;
 545         int const line_height = defaultRowHeight();
 546
 547         // The new absolute coordinate
 548         int new_top_y = top_y() + lines * line_height;
 549
 550         // Restrict to a valid value
 551         new_top_y = std::min(t->height - 4 * line_height, new_top_y);
 552         new_top_y = std::max(0, new_top_y);
 553
 554         scrollDocView(new_top_y);
 555
 556         // Update the scrollbar.
 557         workarea().setScrollbarParams(t->height, top_y(), defaultRowHeight());
 558 }
 559
 560
 561 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 562                                          key_modifier::state state)
 563 {
 564         bv_->owner()->getLyXFunc().processKeySym(key, state);
 565
 566         /* This is perhaps a bit of a hack. When we move
 567          * around, or type, it's nice to be able to see
 568          * the cursor immediately after the keypress. So
 569          * we reset the toggle timeout and force the visibility
 570          * of the cursor. Note we cannot do this inside
 571          * dispatch() itself, because that's called recursively.
 572          */
 573         if (available()) {
 574                 cursor_timeout.restart();
 575                 screen().showCursor(*bv_);
 576         }
 577 }
 578
 579
 580 void BufferView::Pimpl::selectionRequested()
 581 {
 582         static string sel;
 583
 584         if (!available())
 585                 return;
 586
 587         LyXText * text = bv_->getLyXText();
 588
 589         if (text->selection.set() &&
 590                 (!bv_->text->xsel_cache.set() ||
 591                  text->selection.start != bv_->text->xsel_cache.start ||
 592                  text->selection.end != bv_->text->xsel_cache.end))
 593         {
 594                 bv_->text->xsel_cache = text->selection;
 595                 sel = text->selectionAsString(*bv_->buffer(), false);
 596         } else if (!text->selection.set()) {
 597                 sel = string();
 598                 bv_->text->xsel_cache.set(false);
 599         }
 600         if (!sel.empty()) {
 601                 workarea().putClipboard(sel);
 602         }
 603 }
 604
 605
 606 void BufferView::Pimpl::selectionLost()
 607 {
 608         if (available()) {
 609                 screen().hideCursor();
 610                 bv_->getLyXText()->clearSelection();
 611                 bv_->text->xsel_cache.set(false);
 612         }
 613 }
 614
 615
 616 void BufferView::Pimpl::workAreaResize()
 617 {
 618         static int work_area_width;
 619         static int work_area_height;
 620
 621         bool const widthChange = workarea().workWidth() != work_area_width;
 622         bool const heightChange = workarea().workHeight() != work_area_height;
 623
 624         // update from work area
 625         work_area_width = workarea().workWidth();
 626         work_area_height = workarea().workHeight();
 627
 628         if (buffer_ != 0) {
 629                 if (widthChange) {
 630                         // The visible LyXView need a resize
 631                         resizeCurrentBuffer();
 632
 633                         // Remove all texts from the textcache
 634                         // This is not _really_ what we want to do. What
 635                         // we really want to do is to delete in textcache
 636                         // that does not have a BufferView with matching
 637                         // width, but as long as we have only one BufferView
 638                         // deleting all gives the same result.
 639                         if (lyxerr.debugging())
 640                                 textcache.show(lyxerr, "Expose delete all");
 641                         textcache.clear();
 642                 }
 643         }
 644
 645         if (widthChange || heightChange)
 646                 update();
 647
 648         // always make sure that the scrollbar is sane.
 649         updateScrollbar();
 650         owner_->updateLayoutChoice();
 651 }
 652
 653
 654 void BufferView::Pimpl::update()
 655 {
 656         //lyxerr << "BufferView::update()" << endl;
 657         // fix cursor coordinate cache in case something went wrong
 658         if (bv_->getLyXText()) {
 659                 // check needed to survive LyX startup
 660                 bv_->getLyXText()->redoCursor();
 661         }
 662         screen().redraw(*bv_);
 663 }
 664
 665
 666 // Callback for cursor timer
 667 void BufferView::Pimpl::cursorToggle()
 668 {
 669         if (!buffer_) {
 670                 cursor_timeout.restart();
 671                 return;
 672         }
 673
 674         screen().toggleCursor(*bv_);
 675
 676         cursor_timeout.restart();
 677 }
 678
 679
 680 bool BufferView::Pimpl::available() const
 681 {
 682         if (buffer_ && bv_->text)
 683                 return true;
 684         return false;
 685 }
 686
 687
 688 Change const BufferView::Pimpl::getCurrentChange()
 689 {
 690         if (!bv_->buffer()->params().tracking_changes)
 691                 return Change(Change::UNCHANGED);
 692
 693         LyXText * text = bv_->getLyXText();
 694
 695         if (!text->selection.set())
 696                 return Change(Change::UNCHANGED);
 697
 698         return text->getPar(text->selection.start)
 699                 ->lookupChangeFull(text->selection.start.pos());
 700 }
 701
 702
 703 void BufferView::Pimpl::beforeChange(LyXText * text)
 704 {
 705         text->clearSelection();
 706 }
 707
 708
 709 void BufferView::Pimpl::savePosition(unsigned int i)
 710 {
 711         if (i >= saved_positions_num)
 712                 return;
 713         saved_positions[i] = Position(buffer_->fileName(),
 714                                       bv_->text->cursorPar()->id(),
 715                                       bv_->text->cursor.pos());
 716         if (i > 0)
 717                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 718 }
 719
 720
 721 void BufferView::Pimpl::restorePosition(unsigned int i)
 722 {
 723         if (i >= saved_positions_num)
 724                 return;
 725
 726         string const fname = saved_positions[i].filename;
 727
 728         beforeChange(bv_->text);
 729
 730         if (fname != buffer_->fileName()) {
 731                 Buffer * b = 0;
 732                 if (bufferlist.exists(fname))
 733                         b = bufferlist.getBuffer(fname);
 734                 else {
 735                         b = bufferlist.newBuffer(fname);
 736                         ::loadLyXFile(b, fname); // don't ask, just load it
 737                 }
 738                 if (b)
 739                         buffer(b);
 740         }
 741
 742         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 743         if (par == buffer_->par_iterator_end())
 744                 return;
 745
 746         bv_->text->setCursor(par.pit(),
 747                              min(par->size(), saved_positions[i].par_pos));
 748
 749         update();
 750         if (i > 0)
 751                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 752 }
 753
 754
 755 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 756 {
 757         if (i >= saved_positions_num)
 758                 return false;
 759
 760         return !saved_positions[i].filename.empty();
 761 }
 762
 763
 764 void BufferView::Pimpl::switchKeyMap()
 765 {
 766         if (!lyxrc.rtl_support)
 767                 return;
 768
 769         LyXText * text = bv_->getLyXText();
 770         if (text->real_current_font.isRightToLeft()
 771             && !(bv_->theLockingInset()
 772                  && bv_->theLockingInset()->lyxCode() == InsetOld::ERT_CODE))
 773         {
 774                 if (owner_->getIntl().keymap == Intl::PRIMARY)
 775                         owner_->getIntl().KeyMapSec();
 776         } else {
 777                 if (owner_->getIntl().keymap == Intl::SECONDARY)
 778                         owner_->getIntl().KeyMapPrim();
 779         }
 780 }
 781
 782
 783 void BufferView::Pimpl::insetUnlock()
 784 {
 785         if (bv_->theLockingInset()) {
 786                 bv_->theLockingInset()->insetUnlock(bv_);
 787                 bv_->theLockingInset(0);
 788                 finishUndo();
 789         }
 790 }
 791
 792
 793 void BufferView::Pimpl::center()
 794 {
 795         LyXText * text = bv_->text;
 796
 797         beforeChange(text);
 798         int const half_height = workarea().workHeight() / 2;
 799         int new_y = std::max(0, text->cursor.y() - half_height);
 800
 801         // FIXME: look at this comment again ...
 802
 803         // FIXME: can we do this w/o calling screen directly ?
 804         // This updates top_y() but means the fitCursor() call
 805         // from the update(FITCUR) doesn't realise that we might
 806         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 807         // the scrollbar to be updated as it should, so we have
 808         // to do it manually. Any operation that does a center()
 809         // and also might have moved top_y() must make sure to call
 810         // updateScrollbar() currently. Never mind that this is a
 811         // pretty obfuscated way of updating t->top_y()
 812         top_y(new_y);
 813         //screen().draw();
 814         update();
 815 }
 816
 817
 818 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 819 {
 820         workarea().putClipboard(stuff);
 821 }
 822
 823
 824 /*
 825  * Dispatch functions for actions which can be valid for BufferView->text
 826  * and/or InsetText->text!!!
 827  */
 828
 829
 830 InsetOld * BufferView::Pimpl::getInsetByCode(InsetOld::Code code)
 831 {
 832 #if 0
 833         LyXCursor cursor = bv_->getLyXText()->cursor;
 834         Buffer::inset_iterator it =
 835                 find_if(Buffer::inset_iterator(
 836                         cursorPar(), cursor.pos()),
 837                         buffer_->inset_iterator_end(),
 838                         lyx::compare_memfun(&Inset::lyxCode, code));
 839         return it != buffer_->inset_iterator_end() ? (*it) : 0;
 840 #else
 841         // Ok, this is a little bit too brute force but it
 842         // should work for now. Better infrastructure is coming. (Lgb)
 843
 844         Buffer * b = bv_->buffer();
 845         LyXText * text =  bv_->getLyXText();
 846
 847         Buffer::inset_iterator beg = b->inset_iterator_begin();
 848         Buffer::inset_iterator end = b->inset_iterator_end();
 849
 850         bool cursorPar_seen = false;
 851
 852         for (; beg != end; ++beg) {
 853                 if (beg.getPar() == text->cursorPar()) {
 854                         cursorPar_seen = true;
 855                 }
 856                 if (cursorPar_seen) {
 857                         if (beg.getPar() == text->cursorPar()
 858                             && beg.getPos() >= text->cursor.pos()) {
 859                                 break;
 860                         } else if (beg.getPar() != text->cursorPar()) {
 861                                 break;
 862                         }
 863                 }
 864
 865         }
 866         if (beg != end) {
 867                 // Now find the first inset that matches code.
 868                 for (; beg != end; ++beg) {
 869                         if (beg->lyxCode() == code) {
 870                                 return &(*beg);
 871                         }
 872                 }
 873         }
 874         return 0;
 875 #endif
 876 }
 877
 878
 879 void BufferView::Pimpl::MenuInsertLyXFile(string const & filen)
 880 {
 881         string filename = filen;
 882
 883         if (filename.empty()) {
 884                 // Launch a file browser
 885                 string initpath = lyxrc.document_path;
 886
 887                 if (available()) {
 888                         string const trypath = owner_->buffer()->filePath();
 889                         // If directory is writeable, use this as default.
 890                         if (IsDirWriteable(trypath))
 891                                 initpath = trypath;
 892                 }
 893
 894                 FileDialog fileDlg(_("Select LyX document to insert"),
 895                         LFUN_FILE_INSERT,
 896                         make_pair(string(_("Documents|#o#O")),
 897                                   string(lyxrc.document_path)),
 898                         make_pair(string(_("Examples|#E#e")),
 899                                   string(AddPath(system_lyxdir(), "examples"))));
 900
 901                 FileDialog::Result result =
 902                         fileDlg.open(initpath,
 903                                        _("*.lyx| LyX Documents (*.lyx)"));
 904
 905                 if (result.first == FileDialog::Later)
 906                         return;
 907
 908                 filename = result.second;
 909
 910                 // check selected filename
 911                 if (filename.empty()) {
 912                         owner_->message(_("Canceled."));
 913                         return;
 914                 }
 915         }
 916
 917         // get absolute path of file and add ".lyx" to the filename if
 918         // necessary
 919         filename = FileSearch(string(), filename, "lyx");
 920
 921         string const disp_fn = MakeDisplayPath(filename);
 922         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 923         if (bv_->insertLyXFile(filename))
 924                 owner_->message(bformat(_("Document %1$s inserted."),
 925                                         disp_fn));
 926         else
 927                 owner_->message(bformat(_("Could not insert document %1$s"),
 928                                         disp_fn));
 929 }
 930
 931
 932 void BufferView::Pimpl::trackChanges()
 933 {
 934         Buffer * buf(bv_->buffer());
 935         bool const tracking(buf->params().tracking_changes);
 936
 937         if (!tracking) {
 938                 ParIterator const end = buf->par_iterator_end();
 939                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 940                         it->trackChanges();
 941                 buf->params().tracking_changes = true;
 942
 943                 // we cannot allow undos beyond the freeze point
 944                 buf->undostack().clear();
 945         } else {
 946                 update();
 947                 bv_->text->setCursor(0, 0);
 948 #warning changes FIXME
 949                 //moveCursorUpdate(false);
 950
 951                 bool found = lyx::find::findNextChange(bv_);
 952                 if (found) {
 953                         owner_->getDialogs().show("changes");
 954                         return;
 955                 }
 956
 957                 ParIterator const end = buf->par_iterator_end();
 958                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 959                         it->untrackChanges();
 960                 buf->params().tracking_changes = false;
 961         }
 962
 963         buf->redostack().clear();
 964 }
 965
 966
 967 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & ev)
 968 {
 969         switch (ev.action) {
 970         case LFUN_MOUSE_PRESS:
 971         case LFUN_MOUSE_MOTION:
 972         case LFUN_MOUSE_RELEASE:
 973         case LFUN_MOUSE_DOUBLE:
 974         case LFUN_MOUSE_TRIPLE:
 975         {
 976                 // We pass those directly to the Bufferview, since
 977                 // otherwise selection handling breaks down
 978
 979                 // Doesn't go through lyxfunc, so we need to update
 980                 // the layout choice etc. ourselves
 981
 982                 // e.g. Qt mouse press when no buffer
 983                 if (!available())
 984                         return false;
 985
 986                 screen().hideCursor();
 987
 988                 bool const res = dispatch(ev);
 989
 990                 // see workAreaKeyPress
 991                 cursor_timeout.restart();
 992                 screen().showCursor(*bv_);
 993
 994                 // FIXME: we should skip these when selecting
 995                 owner_->updateLayoutChoice();
 996                 owner_->updateToolbar();
 997                 fitCursor();
 998
 999                 // slight hack: this is only called currently when we
1000                 // clicked somewhere, so we force through the display
1001                 // of the new status here.
1002                 owner_->clearMessage();
1003
1004                 return res;
1005         }
1006         default:
1007                 owner_->dispatch(ev);
1008                 return true;
1009         }
1010 }
1011
1012
1013 bool BufferView::Pimpl::dispatch(FuncRequest const & ev_in)
1014 {
1015         // Make sure that the cached BufferView is correct.
1016         FuncRequest ev = ev_in;
1017         ev.setView(bv_);
1018
1019         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
1020                 << " action[" << ev.action << ']'
1021                 << " arg[" << ev.argument << ']'
1022                 << " x[" << ev.x << ']'
1023                 << " y[" << ev.y << ']'
1024                 << " button[" << ev.button() << ']'
1025                 << endl;
1026
1027         LyXTextClass const & tclass = buffer_->params().getLyXTextClass();
1028
1029         switch (ev.action) {
1030
1031         case LFUN_SCROLL_INSET:
1032                 // this is not handled here as this function is only active
1033                 // if we have a locking_inset and that one is (or contains)
1034                 // a tabular-inset
1035                 break;
1036
1037         case LFUN_FILE_INSERT:
1038                 MenuInsertLyXFile(ev.argument);
1039                 break;
1040
1041         case LFUN_FILE_INSERT_ASCII_PARA:
1042                 InsertAsciiFile(bv_, ev.argument, true);
1043                 break;
1044
1045         case LFUN_FILE_INSERT_ASCII:
1046                 InsertAsciiFile(bv_, ev.argument, false);
1047                 break;
1048
1049         case LFUN_LANGUAGE:
1050                 lang(bv_, ev.argument);
1051                 switchKeyMap();
1052                 owner_->view_state_changed();
1053                 break;
1054
1055         case LFUN_EMPH:
1056                 emph(bv_);
1057                 owner_->view_state_changed();
1058                 break;
1059
1060         case LFUN_BOLD:
1061                 bold(bv_);
1062                 owner_->view_state_changed();
1063                 break;
1064
1065         case LFUN_NOUN:
1066                 noun(bv_);
1067                 owner_->view_state_changed();
1068                 break;
1069
1070         case LFUN_CODE:
1071                 code(bv_);
1072                 owner_->view_state_changed();
1073                 break;
1074
1075         case LFUN_SANS:
1076                 sans(bv_);
1077                 owner_->view_state_changed();
1078                 break;
1079
1080         case LFUN_ROMAN:
1081                 roman(bv_);
1082                 owner_->view_state_changed();
1083                 break;
1084
1085         case LFUN_DEFAULT:
1086                 styleReset(bv_);
1087                 owner_->view_state_changed();
1088                 break;
1089
1090         case LFUN_UNDERLINE:
1091                 underline(bv_);
1092                 owner_->view_state_changed();
1093                 break;
1094
1095         case LFUN_FONT_SIZE:
1096                 fontSize(bv_, ev.argument);
1097                 owner_->view_state_changed();
1098                 break;
1099
1100         case LFUN_FONT_STATE:
1101                 owner_->getLyXFunc().setMessage(currentState(bv_));
1102                 break;
1103
1104         case LFUN_INSERT_LABEL: {
1105                 // Try and generate a valid label
1106                 string const contents = ev.argument.empty() ?
1107                         getPossibleLabel(*bv_) : ev.argument;
1108                 InsetCommandParams icp("label", contents);
1109                 string data = InsetCommandMailer::params2string("label", icp);
1110                 owner_->getDialogs().show("label", data, 0);
1111         }
1112         break;
1113
1114         case LFUN_BOOKMARK_SAVE:
1115                 savePosition(strToUnsignedInt(ev.argument));
1116                 break;
1117
1118         case LFUN_BOOKMARK_GOTO:
1119                 restorePosition(strToUnsignedInt(ev.argument));
1120                 break;
1121
1122         case LFUN_REF_GOTO: {
1123                 string label = ev.argument;
1124                 if (label.empty()) {
1125                         InsetRef * inset =
1126                                 static_cast<InsetRef*>(getInsetByCode(InsetOld::REF_CODE));
1127                         if (inset) {
1128                                 label = inset->getContents();
1129                                 savePosition(0);
1130                         }
1131                 }
1132
1133                 if (!label.empty())
1134                         bv_->gotoLabel(label);
1135         }
1136         break;
1137
1138         // --- accented characters ---------------------------
1139
1140         case LFUN_UMLAUT:
1141         case LFUN_CIRCUMFLEX:
1142         case LFUN_GRAVE:
1143         case LFUN_ACUTE:
1144         case LFUN_TILDE:
1145         case LFUN_CEDILLA:
1146         case LFUN_MACRON:
1147         case LFUN_DOT:
1148         case LFUN_UNDERDOT:
1149         case LFUN_UNDERBAR:
1150         case LFUN_CARON:
1151         case LFUN_SPECIAL_CARON:
1152         case LFUN_BREVE:
1153         case LFUN_TIE:
1154         case LFUN_HUNG_UMLAUT:
1155         case LFUN_CIRCLE:
1156         case LFUN_OGONEK:
1157                 if (ev.argument.empty()) {
1158                         // As always...
1159                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1160                 } else {
1161                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1162                         owner_->getIntl().getTransManager()
1163                                 .TranslateAndInsert(ev.argument[0], bv_->getLyXText());
1164                         update();
1165                 }
1166                 break;
1167
1168         case LFUN_MATH_MACRO:
1169         case LFUN_MATH_DELIM:
1170         case LFUN_INSERT_MATRIX:
1171         case LFUN_INSERT_MATH:
1172         case LFUN_MATH_IMPORT_SELECTION: // Imports LaTeX from the X selection
1173         case LFUN_MATH_DISPLAY:          // Open or create a displayed math inset
1174         case LFUN_MATH_MODE:             // Open or create an inlined math inset
1175                 mathDispatch(ev);
1176                 break;
1177
1178         case LFUN_INSET_APPLY: {
1179                 string const name = ev.getArg(0);
1180
1181                 InsetBase * inset = owner_->getDialogs().getOpenInset(name);
1182                 if (inset) {
1183                         // This works both for 'original' and 'mathed' insets.
1184                         // Note that the localDispatch performs updateInset
1185                         // also.
1186                         FuncRequest fr(bv_, LFUN_INSET_MODIFY, ev.argument);
1187                         inset->localDispatch(fr);
1188                 } else {
1189                         FuncRequest fr(bv_, LFUN_INSET_INSERT, ev.argument);
1190                         dispatch(fr);
1191                 }
1192         }
1193         break;
1194
1195         case LFUN_INSET_INSERT: {
1196                 InsetOld * inset = createInset(ev);
1197                 if (inset && insertInset(inset)) {
1198                         updateInset(inset);
1199
1200                         string const name = ev.getArg(0);
1201                         if (name == "bibitem") {
1202                                 // We need to do a redraw because the maximum
1203                                 // InsetBibitem width could have changed
1204 #warning check whether the update() is needed at all
1205                                 bv_->update();
1206                         }
1207                 } else {
1208                         delete inset;
1209                 }
1210         }
1211         break;
1212
1213         case LFUN_FLOAT_LIST:
1214                 if (tclass.floats().typeExist(ev.argument)) {
1215                         InsetOld * inset = new InsetFloatList(ev.argument);
1216                         if (!insertInset(inset, tclass.defaultLayoutName()))
1217                                 delete inset;
1218                 } else {
1219                         lyxerr << "Non-existent float type: "
1220                                << ev.argument << endl;
1221                 }
1222                 break;
1223
1224         case LFUN_LAYOUT_PARAGRAPH: {
1225                 string data;
1226                 params2string(*bv_->getLyXText()->cursorPar(), data);
1227
1228                 data = "show\n" + data;
1229                 bv_->owner()->getDialogs().show("paragraph", data);
1230                 break;
1231         }
1232
1233         case LFUN_PARAGRAPH_UPDATE: {
1234                 if (!bv_->owner()->getDialogs().visible("paragraph"))
1235                         break;
1236                 Paragraph const & par = *bv_->getLyXText()->cursorPar();
1237
1238                 string data;
1239                 params2string(par, data);
1240
1241                 // Will the paragraph accept changes from the dialog?
1242                 InsetOld * const inset = par.inInset();
1243                 bool const accept =
1244                         !(inset && inset->forceDefaultParagraphs(inset));
1245
1246                 data = "update " + tostr(accept) + '\n' + data;
1247                 bv_->owner()->getDialogs().update("paragraph", data);
1248                 break;
1249         }
1250
1251         case LFUN_PARAGRAPH_APPLY:
1252                 setParagraphParams(*bv_, ev.argument);
1253                 break;
1254
1255         case LFUN_THESAURUS_ENTRY:
1256         {
1257                 string arg = ev.argument;
1258
1259                 if (arg.empty()) {
1260                         arg = bv_->getLyXText()->selectionAsString(*buffer_,
1261                                                                    false);
1262
1263                         // FIXME
1264                         if (arg.size() > 100 || arg.empty()) {
1265                                 // Get word or selection
1266                                 bv_->getLyXText()->selectWordWhenUnderCursor(lyx::WHOLE_WORD);
1267                                 arg = bv_->getLyXText()->selectionAsString(*buffer_, false);
1268                                 // FIXME: where is getLyXText()->unselect(bv_) ?
1269                         }
1270                 }
1271
1272                 bv_->owner()->getDialogs().show("thesaurus", arg);
1273         }
1274                 break;
1275
1276         case LFUN_TRACK_CHANGES:
1277                 trackChanges();
1278                 break;
1279
1280         case LFUN_MERGE_CHANGES:
1281                 owner_->getDialogs().show("changes");
1282                 break;
1283
1284         case LFUN_ACCEPT_ALL_CHANGES: {
1285                 bv_->text->setCursor(0, 0);
1286 #warning FIXME changes
1287                 //moveCursorUpdate(false);
1288
1289                 while (lyx::find::findNextChange(bv_))
1290                         bv_->getLyXText()->acceptChange();
1291
1292                 update();
1293                 break;
1294         }
1295
1296         case LFUN_REJECT_ALL_CHANGES: {
1297                 bv_->text->setCursor(0, 0);
1298 #warning FIXME changes
1299                 //moveCursorUpdate(false);
1300
1301                 while (lyx::find::findNextChange(bv_))
1302                         bv_->getLyXText()->rejectChange();
1303
1304                 update();
1305                 break;
1306         }
1307
1308         case LFUN_ACCEPT_CHANGE: {
1309                 bv_->getLyXText()->acceptChange();
1310                 update();
1311                 break;
1312         }
1313
1314         case LFUN_REJECT_CHANGE: {
1315                 bv_->getLyXText()->rejectChange();
1316                 update();
1317                 break;
1318         }
1319
1320         case LFUN_UNKNOWN_ACTION:
1321                 ev.errorMessage(N_("Unknown function!"));
1322                 break;
1323
1324         default:
1325                 return bv_->getLyXText()->dispatch(FuncRequest(ev, bv_));
1326         } // end of switch
1327
1328         return true;
1329 }
1330
1331
1332 bool BufferView::Pimpl::insertInset(InsetOld * inset, string const & lout)
1333 {
1334         // if we are in a locking inset we should try to insert the
1335         // inset there otherwise this is a illegal function now
1336         if (bv_->theLockingInset()) {
1337                 if (bv_->theLockingInset()->insetAllowed(inset))
1338                         return bv_->theLockingInset()->insertInset(bv_, inset);
1339                 return false;
1340         }
1341
1342         // not quite sure if we want this...
1343         recordUndo(bv_, Undo::ATOMIC);
1344         freezeUndo();
1345
1346         beforeChange(bv_->text);
1347         if (!lout.empty()) {
1348                 bv_->text->breakParagraph(bv_->buffer()->paragraphs());
1349
1350                 if (!bv_->text->cursorPar()->empty()) {
1351                         bv_->text->cursorLeft(bv_);
1352                         bv_->text->breakParagraph(bv_->buffer()->paragraphs());
1353                 }
1354
1355                 string lres = lout;
1356                 LyXTextClass const & tclass = buffer_->params().getLyXTextClass();
1357                 bool hasLayout = tclass.hasLayout(lres);
1358                 string lay = tclass.defaultLayoutName();
1359
1360                 if (hasLayout != false) {
1361                         // layout found
1362                         lay = lres;
1363                 } else {
1364                         // layout not fount using default
1365                         lay = tclass.defaultLayoutName();
1366                 }
1367
1368                 bv_->text->setLayout(lay);
1369
1370                 bv_->text->setParagraph(0, 0,
1371                                    0, 0,
1372                                    VSpace(VSpace::NONE), VSpace(VSpace::NONE),
1373                                    Spacing(),
1374                                    LYX_ALIGN_LAYOUT,
1375                                    string(),
1376                                    0);
1377         }
1378
1379         bv_->text->insertInset(inset);
1380         update();
1381
1382         unFreezeUndo();
1383         return true;
1384 }
1385
1386
1387 void BufferView::Pimpl::updateInset(InsetOld const * inset)
1388 {
1389         if (!available())
1390                 return;
1391
1392         bv_->text->redoParagraph(outerPar(*bv_->buffer(), inset));
1393
1394         // this should not be needed, but it is...
1395         // bv_->text->redoParagraph(bv_->text->cursorPar());
1396         // bv_->text->fullRebreak();
1397
1398         update();
1399         updateScrollbar();
1400 }
1401
1402
1403 bool BufferView::Pimpl::ChangeInsets(InsetOld::Code code,
1404                                      string const & from, string const & to)
1405 {
1406         bool need_update = false;
1407         LyXCursor cursor = bv_->text->cursor;
1408         LyXCursor tmpcursor = cursor;
1409         cursor.par(tmpcursor.par());
1410         cursor.pos(tmpcursor.pos());
1411
1412         ParIterator end = bv_->buffer()->par_iterator_end();
1413         for (ParIterator it = bv_->buffer()->par_iterator_begin();
1414              it != end; ++it) {
1415                 bool changed_inset = false;
1416                 for (InsetList::iterator it2 = it->insetlist.begin();
1417                      it2 != it->insetlist.end(); ++it2) {
1418                         if (it2->inset->lyxCode() == code) {
1419                                 InsetCommand * inset = static_cast<InsetCommand *>(it2->inset);
1420                                 if (inset->getContents() == from) {
1421                                         inset->setContents(to);
1422                                         changed_inset = true;
1423                                 }
1424                         }
1425                 }
1426                 if (changed_inset) {
1427                         need_update = true;
1428
1429                         // FIXME
1430
1431                         // The test it.size()==1 was needed to prevent crashes.
1432                         // How to set the cursor correctly when it.size()>1 ??
1433                         if (it.size() == 1) {
1434                                 bv_->text->setCursorIntern(bv_->text->parOffset(it.pit()), 0);
1435                                 bv_->text->redoParagraph(bv_->text->cursorPar());
1436                         }
1437                 }
1438         }
1439         bv_->text->setCursorIntern(cursor.par(), cursor.pos());
1440         return need_update;
1441 }