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 "bufferlist.h"
  23 #include "buffer.h"
  24 #include "buffer_funcs.h"
  25 #include "bufferview_funcs.h"
  26 #include "lfuns.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 "Lsstream.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 "ParagraphParameters.h"
  44 #include "TextCache.h"
  45 #include "undo_funcs.h"
  46
  47 #include "insets/insetfloatlist.h"
  48 #include "insets/insetgraphics.h"
  49 #include "insets/insetinclude.h"
  50 #include "insets/insetref.h"
  51 #include "insets/insettext.h"
  52
  53 #include "frontends/Alert.h"
  54 #include "frontends/Dialogs.h"
  55 #include "frontends/FileDialog.h"
  56 #include "frontends/LyXView.h"
  57 #include "frontends/LyXScreenFactory.h"
  58 #include "frontends/mouse_state.h"
  59 #include "frontends/screen.h"
  60 #include "frontends/WorkArea.h"
  61 #include "frontends/WorkAreaFactory.h"
  62
  63 #include "mathed/formulabase.h"
  64
  65 #include "graphics/Previews.h"
  66
  67 #include "support/LAssert.h"
  68 #include "support/tostr.h"
  69 #include "support/filetools.h"
  70 #include "support/path_defines.h"
  71
  72 #include <boost/bind.hpp>
  73 #include <boost/signals/connection.hpp>
  74
  75 #include <unistd.h>
  76 #include <sys/wait.h>
  77
  78
  79 using std::vector;
  80 using std::find_if;
  81 using std::find;
  82 using std::pair;
  83 using std::endl;
  84 using std::make_pair;
  85 using std::min;
  86
  87 using lyx::pos_type;
  88 using namespace lyx::support;
  89 using namespace bv_funcs;
  90
  91 extern BufferList bufferlist;
  92
  93
  94 namespace {
  95
  96 unsigned int const saved_positions_num = 20;
  97
  98 // All the below connection objects are needed because of a bug in some
  99 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
 100 // to these connections we avoid a segfault upon startup, and also at exit.
 101 // (Lgb)
 102
 103 boost::signals::connection dispatchcon;
 104 boost::signals::connection timecon;
 105 boost::signals::connection doccon;
 106 boost::signals::connection resizecon;
 107 boost::signals::connection kpresscon;
 108 boost::signals::connection selectioncon;
 109 boost::signals::connection lostcon;
 110
 111
 112 } // anon namespace
 113
 114
 115 BufferView::Pimpl::Pimpl(BufferView * bv, LyXView * owner,
 116              int xpos, int ypos, int width, int height)
 117         : bv_(bv), owner_(owner), buffer_(0), cursor_timeout(400),
 118           using_xterm_cursor(false)
 119 {
 120         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 121         screen_.reset(LyXScreenFactory::create(workarea()));
 122
 123         // Setup the signals
 124         doccon = workarea().scrollDocView
 125                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 126         resizecon = workarea().workAreaResize
 127                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 128         dispatchcon = workarea().dispatch
 129                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 130         kpresscon = workarea().workAreaKeyPress
 131                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 132         selectioncon = workarea().selectionRequested
 133                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 134         lostcon = workarea().selectionLost
 135                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 136
 137         timecon = cursor_timeout.timeout
 138                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 139         cursor_timeout.start();
 140         saved_positions.resize(saved_positions_num);
 141 }
 142
 143
 144 void BufferView::Pimpl::addError(ErrorItem const & ei)
 145 {
 146         errorlist_.push_back(ei);
 147 }
 148
 149
 150 void BufferView::Pimpl::showReadonly(bool)
 151 {
 152         owner_->updateWindowTitle();
 153         owner_->getDialogs().updateBufferDependent(false);
 154 }
 155
 156
 157 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 158 {
 159         if (errorConnection_.connected())
 160                 disconnectBuffer();
 161
 162         errorConnection_ = buf.error.connect(boost::bind(&BufferView::Pimpl::addError, this, _1));
 163         messageConnection_ = buf.message.connect(boost::bind(&LyXView::message, owner_, _1));
 164         busyConnection_ = buf.busy.connect(boost::bind(&LyXView::busy, owner_, _1));
 165         titleConnection_ = buf.updateTitles.connect(boost::bind(&LyXView::updateWindowTitle, owner_));
 166         timerConnection_ = buf.resetAutosaveTimers.connect(boost::bind(&LyXView::resetAutosaveTimer, owner_));
 167         readonlyConnection_ = buf.readonly.connect(boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 168         closingConnection_ = buf.closing.connect(boost::bind(&BufferView::Pimpl::buffer, this, (Buffer *)0));
 169 }
 170
 171
 172 void BufferView::Pimpl::disconnectBuffer()
 173 {
 174         errorConnection_.disconnect();
 175         messageConnection_.disconnect();
 176         busyConnection_.disconnect();
 177         titleConnection_.disconnect();
 178         timerConnection_.disconnect();
 179         readonlyConnection_.disconnect();
 180         closingConnection_.disconnect();
 181 }
 182
 183
 184 bool BufferView::Pimpl::newFile(string const & filename,
 185                                 string const & tname,
 186                                 bool isNamed)
 187 {
 188         Buffer * b = ::newFile(filename, tname, isNamed);
 189         buffer(b);
 190         return true;
 191 }
 192
 193
 194 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 195 {
 196         // get absolute path of file and add ".lyx" to the filename if
 197         // necessary
 198         string s = FileSearch(string(), filename, "lyx");
 199
 200         bool const found = !s.empty();
 201
 202         if (!found)
 203                 s = filename;
 204
 205         // file already open?
 206         if (bufferlist.exists(s)) {
 207                 string const file = MakeDisplayPath(s, 20);
 208                 string text = bformat(_("The document %1$s is already "
 209                                         "loaded.\n\nDo you want to revert "
 210                                         "to the saved version?"), file);
 211                 int const ret = Alert::prompt(_("Revert to saved document?"),
 212                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 213
 214                 if (ret != 0) {
 215                         buffer(bufferlist.getBuffer(s));
 216                         return true;
 217                 } else {
 218                         // FIXME: should be LFUN_REVERT
 219                         if (!bufferlist.close(bufferlist.getBuffer(s), false))
 220                                 return false;
 221                         // Fall through to new load. (Asger)
 222                 }
 223         }
 224
 225         Buffer * b;
 226
 227         if (found) {
 228                 b = bufferlist.newBuffer(s);
 229                 connectBuffer(*b);
 230                 if (!::loadLyXFile(b, s)) {
 231                         bufferlist.release(b);
 232                         return false;
 233                 }
 234         } else {
 235                 string text = bformat(_("The document %1$s does not yet "
 236                                         "exist.\n\nDo you want to create "
 237                                         "a new document?"), s);
 238                 int const ret = Alert::prompt(_("Create new document?"),
 239                          text, 0, 1, _("&Create"), _("Cancel"));
 240
 241                 if (ret == 0)
 242                         b = ::newFile(s, string(), true);
 243                 else
 244                         return false;
 245         }
 246
 247         buffer(b);
 248         bv_->showErrorList(_("Parse"));
 249
 250         if (tolastfiles)
 251                 lastfiles->newFile(b->fileName());
 252
 253         return true;
 254 }
 255
 256
 257 WorkArea & BufferView::Pimpl::workarea() const
 258 {
 259         return *workarea_.get();
 260 }
 261
 262
 263 LyXScreen & BufferView::Pimpl::screen() const
 264 {
 265         return *screen_.get();
 266 }
 267
 268
 269 Painter & BufferView::Pimpl::painter() const
 270 {
 271         return workarea().getPainter();
 272 }
 273
 274
 275 void BufferView::Pimpl::buffer(Buffer * b)
 276 {
 277         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 278                             << b << ')' << endl;
 279         if (buffer_) {
 280                 disconnectBuffer();
 281                 // Put the old text into the TextCache, but
 282                 // only if the buffer is still loaded.
 283                 // Also set the owner of the test to 0
 284                 //              bv_->text->owner(0);
 285                 textcache.add(buffer_, workarea().workWidth(), bv_->text);
 286                 if (lyxerr.debugging())
 287                         textcache.show(lyxerr, "BufferView::buffer");
 288
 289                 bv_->text = 0;
 290         }
 291
 292         // set current buffer
 293         buffer_ = b;
 294
 295         // if we're quitting lyx, don't bother updating stuff
 296         if (quitting)
 297                 return;
 298
 299         // if we are closing the buffer, use the first buffer as current
 300         if (!buffer_)
 301                 buffer_ = bufferlist.first();
 302
 303         if (buffer_) {
 304                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 305                 connectBuffer(*buffer_);
 306
 307                 // If we don't have a text object for this, we make one
 308                 if (bv_->text == 0)
 309                         resizeCurrentBuffer();
 310
 311                 // FIXME: needed when ?
 312                 bv_->text->top_y(screen().topCursorVisible(bv_->text));
 313
 314                 // Buffer-dependent dialogs should be updated or
 315                 // hidden. This should go here because some dialogs (eg ToC)
 316                 // require bv_->text.
 317                 owner_->getDialogs().updateBufferDependent(true);
 318         } else {
 319                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 320                 owner_->getDialogs().hideBufferDependent();
 321
 322                 // Also remove all remaining text's from the testcache.
 323                 // (there should not be any!) (if there is any it is a
 324                 // bug!)
 325                 if (lyxerr.debugging())
 326                         textcache.show(lyxerr, "buffer delete all");
 327                 textcache.clear();
 328         }
 329
 330         update();
 331         updateScrollbar();
 332         owner_->updateMenubar();
 333         owner_->updateToolbar();
 334         owner_->updateLayoutChoice();
 335         owner_->updateWindowTitle();
 336
 337         if (buffer_) {
 338                 // Don't forget to update the Layout
 339                 string const layoutname =
 340                         bv_->text->cursor.par()->layout()->name();
 341                 owner_->setLayout(layoutname);
 342         }
 343
 344         if (lyx::graphics::Previews::activated() && buffer_)
 345                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 346 }
 347
 348
 349 bool BufferView::Pimpl::fitCursor()
 350 {
 351         bool ret;
 352
 353         if (bv_->theLockingInset()) {
 354                 bv_->theLockingInset()->fitInsetCursor(bv_);
 355                 ret = true;
 356         } else {
 357                 ret = screen().fitCursor(bv_->text, bv_);
 358         }
 359
 360         //dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
 361
 362         // We need to always update, in case we did a
 363         // paste and we stayed anchored to a row, but
 364         // the actual height of the doc changed ...
 365         updateScrollbar();
 366         return ret;
 367 }
 368
 369
 370 void BufferView::Pimpl::redoCurrentBuffer()
 371 {
 372         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 373         if (buffer_ && bv_->text) {
 374                 resizeCurrentBuffer();
 375                 updateScrollbar();
 376                 owner_->updateLayoutChoice();
 377                 update();
 378         }
 379 }
 380
 381
 382 void BufferView::Pimpl::resizeCurrentBuffer()
 383 {
 384         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 385
 386         ParagraphList::iterator par;
 387         ParagraphList::iterator selstartpar;
 388         ParagraphList::iterator selendpar;
 389         UpdatableInset * the_locking_inset = 0;
 390
 391         pos_type pos = 0;
 392         pos_type selstartpos = 0;
 393         pos_type selendpos = 0;
 394         bool selection = false;
 395         bool mark_set  = false;
 396
 397         owner_->busy(true);
 398
 399         owner_->message(_("Formatting document..."));
 400
 401         if (bv_->text) {
 402                 par = bv_->text->cursor.par();
 403                 pos = bv_->text->cursor.pos();
 404                 selstartpar = bv_->text->selection.start.par();
 405                 selstartpos = bv_->text->selection.start.pos();
 406                 selendpar = bv_->text->selection.end.par();
 407                 selendpos = bv_->text->selection.end.pos();
 408                 selection = bv_->text->selection.set();
 409                 mark_set = bv_->text->selection.mark();
 410                 the_locking_inset = bv_->theLockingInset();
 411                 bv_->text->fullRebreak();
 412                 update();
 413         } else {
 414                 lyxerr << "text not available!" << endl;
 415                 // See if we have a text in TextCache that fits
 416                 // the new buffer_ with the correct width.
 417                 bv_->text = textcache.findFit(buffer_, workarea().workWidth());
 418                 if (bv_->text) {
 419                         lyxerr << "text in cache!" << endl;
 420                         if (lyxerr.debugging()) {
 421                                 lyxerr << "Found a LyXText that fits:" << endl;
 422                                 textcache.show(lyxerr, make_pair(buffer_, make_pair(workarea().workWidth(), bv_->text)));
 423                         }
 424                         // Set the owner of the newly found text
 425                         //      bv_->text->owner(bv_);
 426                         if (lyxerr.debugging())
 427                                 textcache.show(lyxerr, "resizeCurrentBuffer");
 428                 } else {
 429                         lyxerr << "no text in cache!" << endl;
 430                         bv_->text = new LyXText(bv_, 0, false, bv_->buffer()->paragraphs);
 431                         bv_->text->init(bv_);
 432                 }
 433
 434                 par = bv_->text->ownerParagraphs().end();
 435                 selstartpar = bv_->text->ownerParagraphs().end();
 436                 selendpar = bv_->text->ownerParagraphs().end();
 437         }
 438
 439 #warning does not help much
 440         bv_->text->redoParagraphs(bv_->text->ownerParagraphs().begin(),
 441                 bv_->text->ownerParagraphs().end());
 442
 443         if (par != bv_->text->ownerParagraphs().end()) {
 444                 bv_->text->selection.set(true);
 445                 // At this point just to avoid the Delete-Empty-Paragraph-
 446                 // Mechanism when setting the cursor.
 447                 bv_->text->selection.mark(mark_set);
 448                 if (selection) {
 449                         bv_->text->setCursor(selstartpar, selstartpos);
 450                         bv_->text->selection.cursor = bv_->text->cursor;
 451                         bv_->text->setCursor(selendpar, selendpos);
 452                         bv_->text->setSelection();
 453                         bv_->text->setCursor(par, pos);
 454                 } else {
 455                         bv_->text->setCursor(par, pos);
 456                         bv_->text->selection.cursor = bv_->text->cursor;
 457                         bv_->text->selection.set(false);
 458                 }
 459                 // remake the inset locking
 460                 bv_->theLockingInset(the_locking_inset);
 461         }
 462
 463         bv_->text->top_y(screen().topCursorVisible(bv_->text));
 464
 465         switchKeyMap();
 466         owner_->busy(false);
 467
 468         // reset the "Formatting..." message
 469         owner_->clearMessage();
 470
 471         updateScrollbar();
 472 }
 473
 474
 475 void BufferView::Pimpl::updateScrollbar()
 476 {
 477         if (!bv_->text) {
 478                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 479                 workarea().setScrollbarParams(0, 0, 0);
 480                 return;
 481         }
 482
 483         LyXText const & t = *bv_->text;
 484
 485         lyxerr[Debug::GUI] << "Updating scrollbar: h " << t.height << ", top_y() "
 486                 << t.top_y() << ", default height " << defaultRowHeight() << endl;
 487
 488         workarea().setScrollbarParams(t.height, t.top_y(), defaultRowHeight());
 489 }
 490
 491
 492 void BufferView::Pimpl::scrollDocView(int value)
 493 {
 494         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 495
 496         if (!buffer_)
 497                 return;
 498
 499         screen().hideCursor();
 500
 501         bv_->text->top_y(value);
 502         screen().redraw(*bv_);
 503
 504         if (!lyxrc.cursor_follows_scrollbar)
 505                 return;
 506
 507         int const height = defaultRowHeight();
 508         int const first = int((bv_->text->top_y() + height));
 509         int const last = int((bv_->text->top_y() + workarea().workHeight() - height));
 510
 511         LyXText * text = bv_->text;
 512         if (text->cursor.y() < first)
 513                 text->setCursorFromCoordinates(0, first);
 514         else if (text->cursor.y() > last)
 515                 text->setCursorFromCoordinates(0, last);
 516
 517         owner_->updateLayoutChoice();
 518 }
 519
 520
 521 void BufferView::Pimpl::scroll(int lines)
 522 {
 523         if (!buffer_) {
 524                 return;
 525         }
 526
 527         LyXText const * t = bv_->text;
 528         int const line_height = defaultRowHeight();
 529
 530         // The new absolute coordinate
 531         int new_top_y = t->top_y() + lines * line_height;
 532
 533         // Restrict to a valid value
 534         new_top_y = std::min(t->height - 4 * line_height, new_top_y);
 535         new_top_y = std::max(0, new_top_y);
 536
 537         scrollDocView(new_top_y);
 538
 539         // Update the scrollbar.
 540         workarea().setScrollbarParams(t->height, t->top_y(), defaultRowHeight());
 541 }
 542
 543
 544 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 545                                          key_modifier::state state)
 546 {
 547         bv_->owner()->getLyXFunc().processKeySym(key, state);
 548
 549         /* This is perhaps a bit of a hack. When we move
 550          * around, or type, it's nice to be able to see
 551          * the cursor immediately after the keypress. So
 552          * we reset the toggle timeout and force the visibility
 553          * of the cursor. Note we cannot do this inside
 554          * dispatch() itself, because that's called recursively.
 555          */
 556         if (available()) {
 557                 cursor_timeout.restart();
 558                 screen().showCursor(*bv_);
 559         }
 560 }
 561
 562
 563 void BufferView::Pimpl::selectionRequested()
 564 {
 565         static string sel;
 566
 567         if (!available())
 568                 return;
 569
 570         LyXText * text = bv_->getLyXText();
 571
 572         if (text->selection.set() &&
 573                 (!bv_->text->xsel_cache.set() ||
 574                  text->selection.start != bv_->text->xsel_cache.start ||
 575                  text->selection.end != bv_->text->xsel_cache.end))
 576         {
 577                 bv_->text->xsel_cache = text->selection;
 578                 sel = text->selectionAsString(bv_->buffer(), false);
 579         } else if (!text->selection.set()) {
 580                 sel = string();
 581                 bv_->text->xsel_cache.set(false);
 582         }
 583         if (!sel.empty()) {
 584                 workarea().putClipboard(sel);
 585         }
 586 }
 587
 588
 589 void BufferView::Pimpl::selectionLost()
 590 {
 591         if (available()) {
 592                 screen().hideCursor();
 593                 bv_->getLyXText()->clearSelection();
 594                 bv_->text->xsel_cache.set(false);
 595         }
 596 }
 597
 598
 599 void BufferView::Pimpl::workAreaResize()
 600 {
 601         static int work_area_width;
 602         static int work_area_height;
 603
 604         bool const widthChange = workarea().workWidth() != work_area_width;
 605         bool const heightChange = workarea().workHeight() != work_area_height;
 606
 607         // update from work area
 608         work_area_width = workarea().workWidth();
 609         work_area_height = workarea().workHeight();
 610
 611         if (buffer_ != 0) {
 612                 if (widthChange) {
 613                         // The visible LyXView need a resize
 614                         resizeCurrentBuffer();
 615
 616                         // Remove all texts from the textcache
 617                         // This is not _really_ what we want to do. What
 618                         // we really want to do is to delete in textcache
 619                         // that does not have a BufferView with matching
 620                         // width, but as long as we have only one BufferView
 621                         // deleting all gives the same result.
 622                         if (lyxerr.debugging())
 623                                 textcache.show(lyxerr, "Expose delete all");
 624                         textcache.clear();
 625                 }
 626         }
 627
 628         if (widthChange || heightChange)
 629                 update();
 630
 631         // always make sure that the scrollbar is sane.
 632         updateScrollbar();
 633         owner_->updateLayoutChoice();
 634 }
 635
 636
 637 void BufferView::Pimpl::update()
 638 {
 639         lyxerr << "BufferView::update()" << endl;
 640         // fix cursor coordinate cache in case something went wrong
 641         if (bv_->getLyXText()) {
 642                 // check needed to survive LyX startup
 643                 bv_->getLyXText()->redoCursor();
 644                 fitCursor();
 645         }
 646         screen().redraw(*bv_);
 647 }
 648
 649
 650 // Callback for cursor timer
 651 void BufferView::Pimpl::cursorToggle()
 652 {
 653         if (!buffer_) {
 654                 cursor_timeout.restart();
 655                 return;
 656         }
 657
 658         screen().toggleCursor(*bv_);
 659
 660         cursor_timeout.restart();
 661 }
 662
 663
 664 bool BufferView::Pimpl::available() const
 665 {
 666         if (buffer_ && bv_->text)
 667                 return true;
 668         return false;
 669 }
 670
 671
 672 Change const BufferView::Pimpl::getCurrentChange()
 673 {
 674         if (!bv_->buffer()->params.tracking_changes)
 675                 return Change(Change::UNCHANGED);
 676
 677         LyXText * text = bv_->getLyXText();
 678
 679         if (!text->selection.set())
 680                 return Change(Change::UNCHANGED);
 681
 682         LyXCursor const & cur = text->selection.start;
 683         return cur.par()->lookupChangeFull(cur.pos());
 684 }
 685
 686
 687 void BufferView::Pimpl::beforeChange(LyXText * text)
 688 {
 689         text->clearSelection();
 690 }
 691
 692
 693 void BufferView::Pimpl::savePosition(unsigned int i)
 694 {
 695         if (i >= saved_positions_num)
 696                 return;
 697         saved_positions[i] = Position(buffer_->fileName(),
 698                                       bv_->text->cursor.par()->id(),
 699                                       bv_->text->cursor.pos());
 700         if (i > 0)
 701                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 702 }
 703
 704
 705 void BufferView::Pimpl::restorePosition(unsigned int i)
 706 {
 707         if (i >= saved_positions_num)
 708                 return;
 709
 710         string const fname = saved_positions[i].filename;
 711
 712         beforeChange(bv_->text);
 713
 714         if (fname != buffer_->fileName()) {
 715                 Buffer * b;
 716                 if (bufferlist.exists(fname))
 717                         b = bufferlist.getBuffer(fname);
 718                 else {
 719                         b = bufferlist.newBuffer(fname);
 720                         ::loadLyXFile(b, fname); // don't ask, just load it
 721                 }
 722                 if (b != 0)
 723                         buffer(b);
 724         }
 725
 726         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 727         if (par == buffer_->par_iterator_end())
 728                 return;
 729
 730         bv_->text->setCursor(par.pit(),
 731                              min(par->size(), saved_positions[i].par_pos));
 732
 733         update();
 734         if (i > 0)
 735                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 736 }
 737
 738
 739 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 740 {
 741         if (i >= saved_positions_num)
 742                 return false;
 743
 744         return !saved_positions[i].filename.empty();
 745 }
 746
 747
 748 void BufferView::Pimpl::switchKeyMap()
 749 {
 750         if (!lyxrc.rtl_support)
 751                 return;
 752
 753         LyXText * text = bv_->getLyXText();
 754         if (text->real_current_font.isRightToLeft()
 755             && !(bv_->theLockingInset()
 756                  && bv_->theLockingInset()->lyxCode() == InsetOld::ERT_CODE))
 757         {
 758                 if (owner_->getIntl().keymap == Intl::PRIMARY)
 759                         owner_->getIntl().KeyMapSec();
 760         } else {
 761                 if (owner_->getIntl().keymap == Intl::SECONDARY)
 762                         owner_->getIntl().KeyMapPrim();
 763         }
 764 }
 765
 766
 767 void BufferView::Pimpl::insetUnlock()
 768 {
 769         if (bv_->theLockingInset()) {
 770                 bv_->theLockingInset()->insetUnlock(bv_);
 771                 bv_->theLockingInset(0);
 772                 finishUndo();
 773         }
 774 }
 775
 776
 777 void BufferView::Pimpl::center()
 778 {
 779         LyXText * text = bv_->text;
 780
 781         beforeChange(text);
 782         int const half_height = workarea().workHeight() / 2;
 783         int new_y = 0;
 784
 785         if (text->cursor.y() > half_height)
 786                 new_y = text->cursor.y() - half_height;
 787
 788         // FIXME: look at this comment again ...
 789
 790         // FIXME: can we do this w/o calling screen directly ?
 791         // This updates top_y() but means the fitCursor() call
 792         // from the update(FITCUR) doesn't realise that we might
 793         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 794         // the scrollbar to be updated as it should, so we have
 795         // to do it manually. Any operation that does a center()
 796         // and also might have moved top_y() must make sure to call
 797         // updateScrollbar() currently. Never mind that this is a
 798         // pretty obfuscated way of updating t->top_y()
 799         text->top_y(new_y);
 800         //screen().draw();
 801         update();
 802 }
 803
 804
 805 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 806 {
 807         workarea().putClipboard(stuff);
 808 }
 809
 810
 811 /*
 812  * Dispatch functions for actions which can be valid for BufferView->text
 813  * and/or InsetText->text!!!
 814  */
 815
 816
 817 InsetOld * BufferView::Pimpl::getInsetByCode(InsetOld::Code code)
 818 {
 819 #if 0
 820         LyXCursor cursor = bv_->getLyXText()->cursor;
 821         Buffer::inset_iterator it =
 822                 find_if(Buffer::inset_iterator(
 823                         cursor.par(), cursor.pos()),
 824                         buffer_->inset_iterator_end(),
 825                         lyx::compare_memfun(&Inset::lyxCode, code));
 826         return it != buffer_->inset_iterator_end() ? (*it) : 0;
 827 #else
 828         // Ok, this is a little bit too brute force but it
 829         // should work for now. Better infrastructure is coming. (Lgb)
 830
 831         Buffer * b = bv_->buffer();
 832         LyXCursor cursor = bv_->getLyXText()->cursor;
 833
 834         Buffer::inset_iterator beg = b->inset_iterator_begin();
 835         Buffer::inset_iterator end = b->inset_iterator_end();
 836
 837         bool cursor_par_seen = false;
 838
 839         for (; beg != end; ++beg) {
 840                 if (beg.getPar() == cursor.par()) {
 841                         cursor_par_seen = true;
 842                 }
 843                 if (cursor_par_seen) {
 844                         if (beg.getPar() == cursor.par()
 845                             && beg.getPos() >= cursor.pos()) {
 846                                 break;
 847                         } else if (beg.getPar() != cursor.par()) {
 848                                 break;
 849                         }
 850                 }
 851
 852         }
 853         if (beg != end) {
 854                 // Now find the first inset that matches code.
 855                 for (; beg != end; ++beg) {
 856                         if (beg->lyxCode() == code) {
 857                                 return &(*beg);
 858                         }
 859                 }
 860         }
 861         return 0;
 862 #endif
 863 }
 864
 865
 866 void BufferView::Pimpl::MenuInsertLyXFile(string const & filen)
 867 {
 868         string filename = filen;
 869
 870         if (filename.empty()) {
 871                 // Launch a file browser
 872                 string initpath = lyxrc.document_path;
 873
 874                 if (available()) {
 875                         string const trypath = owner_->buffer()->filePath();
 876                         // If directory is writeable, use this as default.
 877                         if (IsDirWriteable(trypath))
 878                                 initpath = trypath;
 879                 }
 880
 881                 FileDialog fileDlg(_("Select LyX document to insert"),
 882                         LFUN_FILE_INSERT,
 883                         make_pair(string(_("Documents|#o#O")),
 884                                   string(lyxrc.document_path)),
 885                         make_pair(string(_("Examples|#E#e")),
 886                                   string(AddPath(system_lyxdir(), "examples"))));
 887
 888                 FileDialog::Result result =
 889                         fileDlg.open(initpath,
 890                                        _("*.lyx| LyX Documents (*.lyx)"));
 891
 892                 if (result.first == FileDialog::Later)
 893                         return;
 894
 895                 filename = result.second;
 896
 897                 // check selected filename
 898                 if (filename.empty()) {
 899                         owner_->message(_("Canceled."));
 900                         return;
 901                 }
 902         }
 903
 904         // get absolute path of file and add ".lyx" to the filename if
 905         // necessary
 906         filename = FileSearch(string(), filename, "lyx");
 907
 908         string const disp_fn = MakeDisplayPath(filename);
 909         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 910         if (bv_->insertLyXFile(filename))
 911                 owner_->message(bformat(_("Document %1$s inserted."),
 912                                         disp_fn));
 913         else
 914                 owner_->message(bformat(_("Could not insert document %1$s"),
 915                                         disp_fn));
 916 }
 917
 918
 919 void BufferView::Pimpl::trackChanges()
 920 {
 921         Buffer * buf(bv_->buffer());
 922         bool const tracking(buf->params.tracking_changes);
 923
 924         if (!tracking) {
 925                 ParIterator const end = buf->par_iterator_end();
 926                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 927                         it->trackChanges();
 928                 buf->params.tracking_changes = true;
 929
 930                 // we cannot allow undos beyond the freeze point
 931                 buf->undostack.clear();
 932         } else {
 933                 update();
 934                 bv_->text->setCursor(buf->paragraphs.begin(), 0);
 935 #warning changes FIXME
 936                 //moveCursorUpdate(false);
 937
 938                 bool found = lyx::find::findNextChange(bv_);
 939                 if (found) {
 940                         owner_->getDialogs().show("changes");
 941                         return;
 942                 }
 943
 944                 ParIterator const end = buf->par_iterator_end();
 945                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 946                         it->untrackChanges();
 947                 buf->params.tracking_changes = false;
 948         }
 949
 950         buf->redostack.clear();
 951 }
 952
 953
 954 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & ev)
 955 {
 956         switch (ev.action) {
 957         case LFUN_MOUSE_PRESS:
 958         case LFUN_MOUSE_MOTION:
 959         case LFUN_MOUSE_RELEASE:
 960         case LFUN_MOUSE_DOUBLE:
 961         case LFUN_MOUSE_TRIPLE:
 962         {
 963                 // We pass those directly to the Bufferview, since
 964                 // otherwise selection handling breaks down
 965
 966                 // Doesn't go through lyxfunc, so we need to update
 967                 // the layout choice etc. ourselves
 968
 969                 // e.g. Qt mouse press when no buffer
 970                 if (!available())
 971                         return false;
 972
 973                 screen().hideCursor();
 974
 975                 bool const res = dispatch(ev);
 976
 977                 // see workAreaKeyPress
 978                 cursor_timeout.restart();
 979                 screen().showCursor(*bv_);
 980
 981                 // FIXME: we should skip these when selecting
 982                 owner_->updateLayoutChoice();
 983                 owner_->updateToolbar();
 984                 fitCursor();
 985
 986                 // slight hack: this is only called currently when we
 987                 // clicked somewhere, so we force through the display
 988                 // of the new status here.
 989                 owner_->clearMessage();
 990
 991                 return res;
 992         }
 993         default:
 994                 owner_->dispatch(ev);
 995                 return true;
 996         }
 997 }
 998
 999
1000 bool BufferView::Pimpl::dispatch(FuncRequest const & ev_in)
1001 {
1002         // Make sure that the cached BufferView is correct.
1003         FuncRequest ev = ev_in;
1004         ev.setView(bv_);
1005
1006         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
1007                 << " action[" << ev.action << ']'
1008                 << " arg[" << ev.argument << ']'
1009                 << " x[" << ev.x << ']'
1010                 << " y[" << ev.y << ']'
1011                 << " button[" << ev.button() << ']'
1012                 << endl;
1013
1014         LyXTextClass const & tclass = buffer_->params.getLyXTextClass();
1015
1016         switch (ev.action) {
1017
1018         case LFUN_SCROLL_INSET:
1019                 // this is not handled here as this function is only active
1020                 // if we have a locking_inset and that one is (or contains)
1021                 // a tabular-inset
1022                 break;
1023
1024         case LFUN_FILE_INSERT:
1025                 MenuInsertLyXFile(ev.argument);
1026                 break;
1027
1028         case LFUN_FILE_INSERT_ASCII_PARA:
1029                 InsertAsciiFile(bv_, ev.argument, true);
1030                 break;
1031
1032         case LFUN_FILE_INSERT_ASCII:
1033                 InsertAsciiFile(bv_, ev.argument, false);
1034                 break;
1035
1036         case LFUN_LANGUAGE:
1037                 lang(bv_, ev.argument);
1038                 switchKeyMap();
1039                 owner_->view_state_changed();
1040                 break;
1041
1042         case LFUN_EMPH:
1043                 emph(bv_);
1044                 owner_->view_state_changed();
1045                 break;
1046
1047         case LFUN_BOLD:
1048                 bold(bv_);
1049                 owner_->view_state_changed();
1050                 break;
1051
1052         case LFUN_NOUN:
1053                 noun(bv_);
1054                 owner_->view_state_changed();
1055                 break;
1056
1057         case LFUN_CODE:
1058                 code(bv_);
1059                 owner_->view_state_changed();
1060                 break;
1061
1062         case LFUN_SANS:
1063                 sans(bv_);
1064                 owner_->view_state_changed();
1065                 break;
1066
1067         case LFUN_ROMAN:
1068                 roman(bv_);
1069                 owner_->view_state_changed();
1070                 break;
1071
1072         case LFUN_DEFAULT:
1073                 styleReset(bv_);
1074                 owner_->view_state_changed();
1075                 break;
1076
1077         case LFUN_UNDERLINE:
1078                 underline(bv_);
1079                 owner_->view_state_changed();
1080                 break;
1081
1082         case LFUN_FONT_SIZE:
1083                 fontSize(bv_, ev.argument);
1084                 owner_->view_state_changed();
1085                 break;
1086
1087         case LFUN_FONT_STATE:
1088                 owner_->getLyXFunc().setMessage(currentState(bv_));
1089                 break;
1090
1091         case LFUN_INSERT_LABEL: {
1092                 // Try and generate a valid label
1093                 string const contents = ev.argument.empty() ?
1094                         getPossibleLabel(*bv_) : ev.argument;
1095                 InsetCommandParams icp("label", contents);
1096                 string data = InsetCommandMailer::params2string("label", icp);
1097                 owner_->getDialogs().show("label", data, 0);
1098         }
1099         break;
1100
1101         case LFUN_BOOKMARK_SAVE:
1102                 savePosition(strToUnsignedInt(ev.argument));
1103                 break;
1104
1105         case LFUN_BOOKMARK_GOTO:
1106                 restorePosition(strToUnsignedInt(ev.argument));
1107                 break;
1108
1109         case LFUN_REF_GOTO: {
1110                 string label = ev.argument;
1111                 if (label.empty()) {
1112                         InsetRef * inset =
1113                                 static_cast<InsetRef*>(getInsetByCode(InsetOld::REF_CODE));
1114                         if (inset) {
1115                                 label = inset->getContents();
1116                                 savePosition(0);
1117                         }
1118                 }
1119
1120                 if (!label.empty())
1121                         bv_->gotoLabel(label);
1122         }
1123         break;
1124
1125         // --- accented characters ---------------------------
1126
1127         case LFUN_UMLAUT:
1128         case LFUN_CIRCUMFLEX:
1129         case LFUN_GRAVE:
1130         case LFUN_ACUTE:
1131         case LFUN_TILDE:
1132         case LFUN_CEDILLA:
1133         case LFUN_MACRON:
1134         case LFUN_DOT:
1135         case LFUN_UNDERDOT:
1136         case LFUN_UNDERBAR:
1137         case LFUN_CARON:
1138         case LFUN_SPECIAL_CARON:
1139         case LFUN_BREVE:
1140         case LFUN_TIE:
1141         case LFUN_HUNG_UMLAUT:
1142         case LFUN_CIRCLE:
1143         case LFUN_OGONEK:
1144                 if (ev.argument.empty()) {
1145                         // As always...
1146                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1147                 } else {
1148                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1149                         owner_->getIntl().getTransManager()
1150                                 .TranslateAndInsert(ev.argument[0], bv_->getLyXText());
1151                         update();
1152                 }
1153                 break;
1154
1155         case LFUN_MATH_MACRO:
1156         case LFUN_MATH_DELIM:
1157         case LFUN_INSERT_MATRIX:
1158         case LFUN_INSERT_MATH:
1159         case LFUN_MATH_IMPORT_SELECTION: // Imports LaTeX from the X selection
1160         case LFUN_MATH_DISPLAY:          // Open or create a displayed math inset
1161         case LFUN_MATH_MODE:             // Open or create an inlined math inset
1162                 mathDispatch(ev);
1163                 break;
1164
1165         case LFUN_INSET_APPLY: {
1166                 string const name = ev.getArg(0);
1167
1168                 InsetBase * inset = owner_->getDialogs().getOpenInset(name);
1169                 if (inset) {
1170                         // This works both for 'original' and 'mathed' insets.
1171                         // Note that the localDispatch performs updateInset
1172                         // also.
1173                         FuncRequest fr(bv_, LFUN_INSET_MODIFY, ev.argument);
1174                         inset->localDispatch(fr);
1175                 } else {
1176                         FuncRequest fr(bv_, LFUN_INSET_INSERT, ev.argument);
1177                         dispatch(fr);
1178                 }
1179         }
1180         break;
1181
1182         case LFUN_INSET_INSERT: {
1183                 InsetOld * inset = createInset(ev);
1184                 if (inset && insertInset(inset)) {
1185                         updateInset();
1186
1187                         string const name = ev.getArg(0);
1188                         if (name == "bibitem") {
1189                                 // We need to do a redraw because the maximum
1190                                 // InsetBibitem width could have changed
1191 #warning check whether the update() is needed at all
1192                                 bv_->update();
1193                         }
1194                 } else {
1195                         delete inset;
1196                 }
1197         }
1198         break;
1199
1200         case LFUN_FLOAT_LIST:
1201                 if (tclass.floats().typeExist(ev.argument)) {
1202                         InsetOld * inset = new InsetFloatList(ev.argument);
1203                         if (!insertInset(inset, tclass.defaultLayoutName()))
1204                                 delete inset;
1205                 } else {
1206                         lyxerr << "Non-existent float type: "
1207                                << ev.argument << endl;
1208                 }
1209                 break;
1210
1211         case LFUN_LAYOUT_PARAGRAPH: {
1212                 string data;
1213                 params2string(*bv_->getLyXText()->cursor.par(), data);
1214
1215                 data = "show\n" + data;
1216                 bv_->owner()->getDialogs().show("paragraph", data);
1217                 break;
1218         }
1219
1220         case LFUN_PARAGRAPH_UPDATE: {
1221                 if (!bv_->owner()->getDialogs().visible("paragraph"))
1222                         break;
1223                 Paragraph const & par = *bv_->getLyXText()->cursor.par();
1224
1225                 string data;
1226                 params2string(par, data);
1227
1228                 // Will the paragraph accept changes from the dialog?
1229                 InsetOld * const inset = par.inInset();
1230                 bool const accept =
1231                         !(inset && inset->forceDefaultParagraphs(inset));
1232
1233                 data = "update " + tostr(accept) + '\n' + data;
1234                 bv_->owner()->getDialogs().update("paragraph", data);
1235                 break;
1236         }
1237
1238         case LFUN_PARAGRAPH_APPLY:
1239                 setParagraphParams(*bv_, ev.argument);
1240                 break;
1241
1242         case LFUN_THESAURUS_ENTRY:
1243         {
1244                 string arg = ev.argument;
1245
1246                 if (arg.empty()) {
1247                         arg = bv_->getLyXText()->selectionAsString(buffer_,
1248                                                                    false);
1249
1250                         // FIXME
1251                         if (arg.size() > 100 || arg.empty()) {
1252                                 // Get word or selection
1253                                 bv_->getLyXText()->selectWordWhenUnderCursor(lyx::WHOLE_WORD);
1254                                 arg = bv_->getLyXText()->selectionAsString(buffer_, false);
1255                                 // FIXME: where is getLyXText()->unselect(bv_) ?
1256                         }
1257                 }
1258
1259                 bv_->owner()->getDialogs().show("thesaurus", arg);
1260         }
1261                 break;
1262
1263         case LFUN_TRACK_CHANGES:
1264                 trackChanges();
1265                 break;
1266
1267         case LFUN_MERGE_CHANGES:
1268                 owner_->getDialogs().show("changes");
1269                 break;
1270
1271         case LFUN_ACCEPT_ALL_CHANGES: {
1272                 bv_->text->setCursor(bv_->buffer()->paragraphs.begin(), 0);
1273 #warning FIXME changes
1274                 //moveCursorUpdate(false);
1275
1276                 while (lyx::find::findNextChange(bv_))
1277                         bv_->getLyXText()->acceptChange();
1278
1279                 update();
1280                 break;
1281         }
1282
1283         case LFUN_REJECT_ALL_CHANGES: {
1284                 bv_->text->setCursor(bv_->buffer()->paragraphs.begin(), 0);
1285 #warning FIXME changes
1286                 //moveCursorUpdate(false);
1287
1288                 while (lyx::find::findNextChange(bv_))
1289                         bv_->getLyXText()->rejectChange();
1290
1291                 update();
1292                 break;
1293         }
1294
1295         case LFUN_ACCEPT_CHANGE: {
1296                 bv_->getLyXText()->acceptChange();
1297                 update();
1298                 break;
1299         }
1300
1301         case LFUN_REJECT_CHANGE: {
1302                 bv_->getLyXText()->rejectChange();
1303                 update();
1304                 break;
1305         }
1306
1307         case LFUN_UNKNOWN_ACTION:
1308                 ev.errorMessage(N_("Unknown function!"));
1309                 break;
1310
1311         default:
1312                 return bv_->getLyXText()->dispatch(FuncRequest(ev, bv_));
1313         } // end of switch
1314
1315         return true;
1316 }
1317
1318
1319 bool BufferView::Pimpl::insertInset(InsetOld * inset, string const & lout)
1320 {
1321         // if we are in a locking inset we should try to insert the
1322         // inset there otherwise this is a illegal function now
1323         if (bv_->theLockingInset()) {
1324                 if (bv_->theLockingInset()->insetAllowed(inset))
1325                         return bv_->theLockingInset()->insertInset(bv_, inset);
1326                 return false;
1327         }
1328
1329         // not quite sure if we want this...
1330         recordUndo(bv_, Undo::ATOMIC);
1331         freezeUndo();
1332
1333         beforeChange(bv_->text);
1334         if (!lout.empty()) {
1335                 bv_->text->breakParagraph(bv_->buffer()->paragraphs);
1336
1337                 if (!bv_->text->cursor.par()->empty()) {
1338                         bv_->text->cursorLeft(bv_);
1339                         bv_->text->breakParagraph(bv_->buffer()->paragraphs);
1340                 }
1341
1342                 string lres = lout;
1343                 LyXTextClass const & tclass = buffer_->params.getLyXTextClass();
1344                 bool hasLayout = tclass.hasLayout(lres);
1345                 string lay = tclass.defaultLayoutName();
1346
1347                 if (hasLayout != false) {
1348                         // layout found
1349                         lay = lres;
1350                 } else {
1351                         // layout not fount using default
1352                         lay = tclass.defaultLayoutName();
1353                 }
1354
1355                 bv_->text->setLayout(lay);
1356
1357                 bv_->text->setParagraph(0, 0,
1358                                    0, 0,
1359                                    VSpace(VSpace::NONE), VSpace(VSpace::NONE),
1360                                    Spacing(),
1361                                    LYX_ALIGN_LAYOUT,
1362                                    string(),
1363                                    0);
1364         }
1365
1366         bv_->text->insertInset(inset);
1367         update();
1368
1369         unFreezeUndo();
1370         return true;
1371 }
1372
1373
1374 void BufferView::Pimpl::updateInset()
1375 {
1376         if (!available())
1377                 return;
1378
1379         // this should not be needed, but it is...
1380         //bv_->text->redoParagraph(bv_->text->cursor.par());
1381         //bv_->text->fullRebreak();
1382
1383         update();
1384         updateScrollbar();
1385 }