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 "debug.h"
  27 #include "factory.h"
  28 #include "FloatList.h"
  29 #include "funcrequest.h"
  30 #include "gettext.h"
  31 #include "intl.h"
  32 #include "iterators.h"
  33 #include "lyx_cb.h" // added for Dispatch functions
  34 #include "lyx_main.h"
  35 #include "lyxfind.h"
  36 #include "lyxfunc.h"
  37 #include "lyxtext.h"
  38 #include "lyxrc.h"
  39 #include "lastfiles.h"
  40 #include "paragraph.h"
  41 #include "paragraph_funcs.h"
  42 #include "ParagraphParameters.h"
  43 #include "TextCache.h"
  44 #include "undo_funcs.h"
  45
  46 #include "insets/insetfloatlist.h"
  47 #include "insets/insetref.h"
  48
  49 #include "frontends/Alert.h"
  50 #include "frontends/Dialogs.h"
  51 #include "frontends/FileDialog.h"
  52 #include "frontends/LyXView.h"
  53 #include "frontends/LyXScreenFactory.h"
  54 #include "frontends/screen.h"
  55 #include "frontends/WorkArea.h"
  56 #include "frontends/WorkAreaFactory.h"
  57
  58 #include "graphics/Previews.h"
  59
  60 #include "mathed/formulabase.h"
  61
  62 #include "support/filetools.h"
  63 #include "support/path_defines.h"
  64 #include "support/tostr.h"
  65
  66 #include <boost/bind.hpp>
  67
  68
  69 using std::endl;
  70 using std::make_pair;
  71 using std::min;
  72
  73 using lyx::pos_type;
  74 using namespace lyx::support;
  75 using namespace bv_funcs;
  76
  77 extern BufferList bufferlist;
  78
  79
  80 namespace {
  81
  82 unsigned int const saved_positions_num = 20;
  83
  84 // All the below connection objects are needed because of a bug in some
  85 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
  86 // to these connections we avoid a segfault upon startup, and also at exit.
  87 // (Lgb)
  88
  89 boost::signals::connection dispatchcon;
  90 boost::signals::connection timecon;
  91 boost::signals::connection doccon;
  92 boost::signals::connection resizecon;
  93 boost::signals::connection kpresscon;
  94 boost::signals::connection selectioncon;
  95 boost::signals::connection lostcon;
  96
  97
  98 } // anon namespace
  99
 100
 101 BufferView::Pimpl::Pimpl(BufferView * bv, LyXView * owner,
 102              int xpos, int ypos, int width, int height)
 103         : bv_(bv), owner_(owner), buffer_(0), cursor_timeout(400),
 104           using_xterm_cursor(false)
 105 {
 106         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 107         screen_.reset(LyXScreenFactory::create(workarea()));
 108
 109         // Setup the signals
 110         doccon = workarea().scrollDocView
 111                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 112         resizecon = workarea().workAreaResize
 113                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 114         dispatchcon = workarea().dispatch
 115                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 116         kpresscon = workarea().workAreaKeyPress
 117                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 118         selectioncon = workarea().selectionRequested
 119                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 120         lostcon = workarea().selectionLost
 121                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 122
 123         timecon = cursor_timeout.timeout
 124                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 125         cursor_timeout.start();
 126         saved_positions.resize(saved_positions_num);
 127 }
 128
 129
 130 void BufferView::Pimpl::addError(ErrorItem const & ei)
 131 {
 132         errorlist_.push_back(ei);
 133 }
 134
 135
 136 void BufferView::Pimpl::showReadonly(bool)
 137 {
 138         owner_->updateWindowTitle();
 139         owner_->getDialogs().updateBufferDependent(false);
 140 }
 141
 142
 143 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 144 {
 145         if (errorConnection_.connected())
 146                 disconnectBuffer();
 147
 148         errorConnection_ = buf.error.connect(boost::bind(&BufferView::Pimpl::addError, this, _1));
 149         messageConnection_ = buf.message.connect(boost::bind(&LyXView::message, owner_, _1));
 150         busyConnection_ = buf.busy.connect(boost::bind(&LyXView::busy, owner_, _1));
 151         titleConnection_ = buf.updateTitles.connect(boost::bind(&LyXView::updateWindowTitle, owner_));
 152         timerConnection_ = buf.resetAutosaveTimers.connect(boost::bind(&LyXView::resetAutosaveTimer, owner_));
 153         readonlyConnection_ = buf.readonly.connect(boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 154         closingConnection_ = buf.closing.connect(boost::bind(&BufferView::Pimpl::buffer, this, (Buffer *)0));
 155 }
 156
 157
 158 void BufferView::Pimpl::disconnectBuffer()
 159 {
 160         errorConnection_.disconnect();
 161         messageConnection_.disconnect();
 162         busyConnection_.disconnect();
 163         titleConnection_.disconnect();
 164         timerConnection_.disconnect();
 165         readonlyConnection_.disconnect();
 166         closingConnection_.disconnect();
 167 }
 168
 169
 170 bool BufferView::Pimpl::newFile(string const & filename,
 171                                 string const & tname,
 172                                 bool isNamed)
 173 {
 174         Buffer * b = ::newFile(filename, tname, isNamed);
 175         buffer(b);
 176         return true;
 177 }
 178
 179
 180 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 181 {
 182         // get absolute path of file and add ".lyx" to the filename if
 183         // necessary
 184         string s = FileSearch(string(), filename, "lyx");
 185
 186         bool const found = !s.empty();
 187
 188         if (!found)
 189                 s = filename;
 190
 191         // file already open?
 192         if (bufferlist.exists(s)) {
 193                 string const file = MakeDisplayPath(s, 20);
 194                 string text = bformat(_("The document %1$s is already "
 195                                         "loaded.\n\nDo you want to revert "
 196                                         "to the saved version?"), file);
 197                 int const ret = Alert::prompt(_("Revert to saved document?"),
 198                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 199
 200                 if (ret != 0) {
 201                         buffer(bufferlist.getBuffer(s));
 202                         return true;
 203                 } else {
 204                         // FIXME: should be LFUN_REVERT
 205                         if (!bufferlist.close(bufferlist.getBuffer(s), false))
 206                                 return false;
 207                         // Fall through to new load. (Asger)
 208                 }
 209         }
 210
 211         Buffer * b;
 212
 213         if (found) {
 214                 b = bufferlist.newBuffer(s);
 215                 connectBuffer(*b);
 216                 if (!::loadLyXFile(b, s)) {
 217                         bufferlist.release(b);
 218                         return false;
 219                 }
 220         } else {
 221                 string text = bformat(_("The document %1$s does not yet "
 222                                         "exist.\n\nDo you want to create "
 223                                         "a new document?"), s);
 224                 int const ret = Alert::prompt(_("Create new document?"),
 225                          text, 0, 1, _("&Create"), _("Cancel"));
 226
 227                 if (ret == 0)
 228                         b = ::newFile(s, string(), true);
 229                 else
 230                         return false;
 231         }
 232
 233         buffer(b);
 234         bv_->showErrorList(_("Parse"));
 235
 236         if (tolastfiles)
 237                 lastfiles->newFile(b->fileName());
 238
 239         return true;
 240 }
 241
 242
 243 WorkArea & BufferView::Pimpl::workarea() const
 244 {
 245         return *workarea_.get();
 246 }
 247
 248
 249 LyXScreen & BufferView::Pimpl::screen() const
 250 {
 251         return *screen_.get();
 252 }
 253
 254
 255 Painter & BufferView::Pimpl::painter() const
 256 {
 257         return workarea().getPainter();
 258 }
 259
 260
 261 void BufferView::Pimpl::top_y(int y)
 262 {
 263         top_y_ = y;
 264 }
 265
 266
 267 int BufferView::Pimpl::top_y() const
 268 {
 269         return top_y_;
 270 }
 271
 272
 273 void BufferView::Pimpl::buffer(Buffer * b)
 274 {
 275         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 276                             << b << ')' << endl;
 277         if (buffer_) {
 278                 disconnectBuffer();
 279                 // Put the old text into the TextCache, but
 280                 // only if the buffer is still loaded.
 281                 // Also set the owner of the test to 0
 282                 //              bv_->text->owner(0);
 283                 textcache.add(buffer_, workarea().workWidth(), bv_->text);
 284                 if (lyxerr.debugging())
 285                         textcache.show(lyxerr, "BufferView::buffer");
 286
 287                 bv_->text = 0;
 288         }
 289
 290         // set current buffer
 291         buffer_ = b;
 292
 293         top_y_ = 0;
 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                 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         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                 << top_y() << ", default height " << defaultRowHeight() << endl;
 487
 488         workarea().setScrollbarParams(t.height, 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         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 = top_y() + height;
 509         int const last = 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 = 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, 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         }
 645         screen().redraw(*bv_);
 646 }
 647
 648
 649 // Callback for cursor timer
 650 void BufferView::Pimpl::cursorToggle()
 651 {
 652         if (!buffer_) {
 653                 cursor_timeout.restart();
 654                 return;
 655         }
 656
 657         screen().toggleCursor(*bv_);
 658
 659         cursor_timeout.restart();
 660 }
 661
 662
 663 bool BufferView::Pimpl::available() const
 664 {
 665         if (buffer_ && bv_->text)
 666                 return true;
 667         return false;
 668 }
 669
 670
 671 Change const BufferView::Pimpl::getCurrentChange()
 672 {
 673         if (!bv_->buffer()->params().tracking_changes)
 674                 return Change(Change::UNCHANGED);
 675
 676         LyXText * text = bv_->getLyXText();
 677
 678         if (!text->selection.set())
 679                 return Change(Change::UNCHANGED);
 680
 681         LyXCursor const & cur = text->selection.start;
 682         return cur.par()->lookupChangeFull(cur.pos());
 683 }
 684
 685
 686 void BufferView::Pimpl::beforeChange(LyXText * text)
 687 {
 688         text->clearSelection();
 689 }
 690
 691
 692 void BufferView::Pimpl::savePosition(unsigned int i)
 693 {
 694         if (i >= saved_positions_num)
 695                 return;
 696         saved_positions[i] = Position(buffer_->fileName(),
 697                                       bv_->text->cursor.par()->id(),
 698                                       bv_->text->cursor.pos());
 699         if (i > 0)
 700                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 701 }
 702
 703
 704 void BufferView::Pimpl::restorePosition(unsigned int i)
 705 {
 706         if (i >= saved_positions_num)
 707                 return;
 708
 709         string const fname = saved_positions[i].filename;
 710
 711         beforeChange(bv_->text);
 712
 713         if (fname != buffer_->fileName()) {
 714                 Buffer * b;
 715                 if (bufferlist.exists(fname))
 716                         b = bufferlist.getBuffer(fname);
 717                 else {
 718                         b = bufferlist.newBuffer(fname);
 719                         ::loadLyXFile(b, fname); // don't ask, just load it
 720                 }
 721                 if (b != 0)
 722                         buffer(b);
 723         }
 724
 725         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 726         if (par == buffer_->par_iterator_end())
 727                 return;
 728
 729         bv_->text->setCursor(par.pit(),
 730                              min(par->size(), saved_positions[i].par_pos));
 731
 732         update();
 733         if (i > 0)
 734                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 735 }
 736
 737
 738 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 739 {
 740         if (i >= saved_positions_num)
 741                 return false;
 742
 743         return !saved_positions[i].filename.empty();
 744 }
 745
 746
 747 void BufferView::Pimpl::switchKeyMap()
 748 {
 749         if (!lyxrc.rtl_support)
 750                 return;
 751
 752         LyXText * text = bv_->getLyXText();
 753         if (text->real_current_font.isRightToLeft()
 754             && !(bv_->theLockingInset()
 755                  && bv_->theLockingInset()->lyxCode() == InsetOld::ERT_CODE))
 756         {
 757                 if (owner_->getIntl().keymap == Intl::PRIMARY)
 758                         owner_->getIntl().KeyMapSec();
 759         } else {
 760                 if (owner_->getIntl().keymap == Intl::SECONDARY)
 761                         owner_->getIntl().KeyMapPrim();
 762         }
 763 }
 764
 765
 766 void BufferView::Pimpl::insetUnlock()
 767 {
 768         if (bv_->theLockingInset()) {
 769                 bv_->theLockingInset()->insetUnlock(bv_);
 770                 bv_->theLockingInset(0);
 771                 finishUndo();
 772         }
 773 }
 774
 775
 776 void BufferView::Pimpl::center()
 777 {
 778         LyXText * text = bv_->text;
 779
 780         beforeChange(text);
 781         int const half_height = workarea().workHeight() / 2;
 782         int new_y = std::max(0, text->cursor.y() - half_height);
 783
 784         // FIXME: look at this comment again ...
 785
 786         // FIXME: can we do this w/o calling screen directly ?
 787         // This updates top_y() but means the fitCursor() call
 788         // from the update(FITCUR) doesn't realise that we might
 789         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 790         // the scrollbar to be updated as it should, so we have
 791         // to do it manually. Any operation that does a center()
 792         // and also might have moved top_y() must make sure to call
 793         // updateScrollbar() currently. Never mind that this is a
 794         // pretty obfuscated way of updating t->top_y()
 795         top_y(new_y);
 796         //screen().draw();
 797         update();
 798 }
 799
 800
 801 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 802 {
 803         workarea().putClipboard(stuff);
 804 }
 805
 806
 807 /*
 808  * Dispatch functions for actions which can be valid for BufferView->text
 809  * and/or InsetText->text!!!
 810  */
 811
 812
 813 InsetOld * BufferView::Pimpl::getInsetByCode(InsetOld::Code code)
 814 {
 815 #if 0
 816         LyXCursor cursor = bv_->getLyXText()->cursor;
 817         Buffer::inset_iterator it =
 818                 find_if(Buffer::inset_iterator(
 819                         cursor.par(), cursor.pos()),
 820                         buffer_->inset_iterator_end(),
 821                         lyx::compare_memfun(&Inset::lyxCode, code));
 822         return it != buffer_->inset_iterator_end() ? (*it) : 0;
 823 #else
 824         // Ok, this is a little bit too brute force but it
 825         // should work for now. Better infrastructure is coming. (Lgb)
 826
 827         Buffer * b = bv_->buffer();
 828         LyXCursor cursor = bv_->getLyXText()->cursor;
 829
 830         Buffer::inset_iterator beg = b->inset_iterator_begin();
 831         Buffer::inset_iterator end = b->inset_iterator_end();
 832
 833         bool cursor_par_seen = false;
 834
 835         for (; beg != end; ++beg) {
 836                 if (beg.getPar() == cursor.par()) {
 837                         cursor_par_seen = true;
 838                 }
 839                 if (cursor_par_seen) {
 840                         if (beg.getPar() == cursor.par()
 841                             && beg.getPos() >= cursor.pos()) {
 842                                 break;
 843                         } else if (beg.getPar() != cursor.par()) {
 844                                 break;
 845                         }
 846                 }
 847
 848         }
 849         if (beg != end) {
 850                 // Now find the first inset that matches code.
 851                 for (; beg != end; ++beg) {
 852                         if (beg->lyxCode() == code) {
 853                                 return &(*beg);
 854                         }
 855                 }
 856         }
 857         return 0;
 858 #endif
 859 }
 860
 861
 862 void BufferView::Pimpl::MenuInsertLyXFile(string const & filen)
 863 {
 864         string filename = filen;
 865
 866         if (filename.empty()) {
 867                 // Launch a file browser
 868                 string initpath = lyxrc.document_path;
 869
 870                 if (available()) {
 871                         string const trypath = owner_->buffer()->filePath();
 872                         // If directory is writeable, use this as default.
 873                         if (IsDirWriteable(trypath))
 874                                 initpath = trypath;
 875                 }
 876
 877                 FileDialog fileDlg(_("Select LyX document to insert"),
 878                         LFUN_FILE_INSERT,
 879                         make_pair(string(_("Documents|#o#O")),
 880                                   string(lyxrc.document_path)),
 881                         make_pair(string(_("Examples|#E#e")),
 882                                   string(AddPath(system_lyxdir(), "examples"))));
 883
 884                 FileDialog::Result result =
 885                         fileDlg.open(initpath,
 886                                        _("*.lyx| LyX Documents (*.lyx)"));
 887
 888                 if (result.first == FileDialog::Later)
 889                         return;
 890
 891                 filename = result.second;
 892
 893                 // check selected filename
 894                 if (filename.empty()) {
 895                         owner_->message(_("Canceled."));
 896                         return;
 897                 }
 898         }
 899
 900         // get absolute path of file and add ".lyx" to the filename if
 901         // necessary
 902         filename = FileSearch(string(), filename, "lyx");
 903
 904         string const disp_fn = MakeDisplayPath(filename);
 905         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 906         if (bv_->insertLyXFile(filename))
 907                 owner_->message(bformat(_("Document %1$s inserted."),
 908                                         disp_fn));
 909         else
 910                 owner_->message(bformat(_("Could not insert document %1$s"),
 911                                         disp_fn));
 912 }
 913
 914
 915 void BufferView::Pimpl::trackChanges()
 916 {
 917         Buffer * buf(bv_->buffer());
 918         bool const tracking(buf->params().tracking_changes);
 919
 920         if (!tracking) {
 921                 ParIterator const end = buf->par_iterator_end();
 922                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 923                         it->trackChanges();
 924                 buf->params().tracking_changes = true;
 925
 926                 // we cannot allow undos beyond the freeze point
 927                 buf->undostack().clear();
 928         } else {
 929                 update();
 930                 bv_->text->setCursor(buf->paragraphs().begin(), 0);
 931 #warning changes FIXME
 932                 //moveCursorUpdate(false);
 933
 934                 bool found = lyx::find::findNextChange(bv_);
 935                 if (found) {
 936                         owner_->getDialogs().show("changes");
 937                         return;
 938                 }
 939
 940                 ParIterator const end = buf->par_iterator_end();
 941                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 942                         it->untrackChanges();
 943                 buf->params().tracking_changes = false;
 944         }
 945
 946         buf->redostack().clear();
 947 }
 948
 949
 950 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & ev)
 951 {
 952         switch (ev.action) {
 953         case LFUN_MOUSE_PRESS:
 954         case LFUN_MOUSE_MOTION:
 955         case LFUN_MOUSE_RELEASE:
 956         case LFUN_MOUSE_DOUBLE:
 957         case LFUN_MOUSE_TRIPLE:
 958         {
 959                 // We pass those directly to the Bufferview, since
 960                 // otherwise selection handling breaks down
 961
 962                 // Doesn't go through lyxfunc, so we need to update
 963                 // the layout choice etc. ourselves
 964
 965                 // e.g. Qt mouse press when no buffer
 966                 if (!available())
 967                         return false;
 968
 969                 screen().hideCursor();
 970
 971                 bool const res = dispatch(ev);
 972
 973                 // see workAreaKeyPress
 974                 cursor_timeout.restart();
 975                 screen().showCursor(*bv_);
 976
 977                 // FIXME: we should skip these when selecting
 978                 owner_->updateLayoutChoice();
 979                 owner_->updateToolbar();
 980                 fitCursor();
 981
 982                 // slight hack: this is only called currently when we
 983                 // clicked somewhere, so we force through the display
 984                 // of the new status here.
 985                 owner_->clearMessage();
 986
 987                 return res;
 988         }
 989         default:
 990                 owner_->dispatch(ev);
 991                 return true;
 992         }
 993 }
 994
 995
 996 bool BufferView::Pimpl::dispatch(FuncRequest const & ev_in)
 997 {
 998         // Make sure that the cached BufferView is correct.
 999         FuncRequest ev = ev_in;
1000         ev.setView(bv_);
1001
1002         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
1003                 << " action[" << ev.action << ']'
1004                 << " arg[" << ev.argument << ']'
1005                 << " x[" << ev.x << ']'
1006                 << " y[" << ev.y << ']'
1007                 << " button[" << ev.button() << ']'
1008                 << endl;
1009
1010         LyXTextClass const & tclass = buffer_->params().getLyXTextClass();
1011
1012         switch (ev.action) {
1013
1014         case LFUN_SCROLL_INSET:
1015                 // this is not handled here as this function is only active
1016                 // if we have a locking_inset and that one is (or contains)
1017                 // a tabular-inset
1018                 break;
1019
1020         case LFUN_FILE_INSERT:
1021                 MenuInsertLyXFile(ev.argument);
1022                 break;
1023
1024         case LFUN_FILE_INSERT_ASCII_PARA:
1025                 InsertAsciiFile(bv_, ev.argument, true);
1026                 break;
1027
1028         case LFUN_FILE_INSERT_ASCII:
1029                 InsertAsciiFile(bv_, ev.argument, false);
1030                 break;
1031
1032         case LFUN_LANGUAGE:
1033                 lang(bv_, ev.argument);
1034                 switchKeyMap();
1035                 owner_->view_state_changed();
1036                 break;
1037
1038         case LFUN_EMPH:
1039                 emph(bv_);
1040                 owner_->view_state_changed();
1041                 break;
1042
1043         case LFUN_BOLD:
1044                 bold(bv_);
1045                 owner_->view_state_changed();
1046                 break;
1047
1048         case LFUN_NOUN:
1049                 noun(bv_);
1050                 owner_->view_state_changed();
1051                 break;
1052
1053         case LFUN_CODE:
1054                 code(bv_);
1055                 owner_->view_state_changed();
1056                 break;
1057
1058         case LFUN_SANS:
1059                 sans(bv_);
1060                 owner_->view_state_changed();
1061                 break;
1062
1063         case LFUN_ROMAN:
1064                 roman(bv_);
1065                 owner_->view_state_changed();
1066                 break;
1067
1068         case LFUN_DEFAULT:
1069                 styleReset(bv_);
1070                 owner_->view_state_changed();
1071                 break;
1072
1073         case LFUN_UNDERLINE:
1074                 underline(bv_);
1075                 owner_->view_state_changed();
1076                 break;
1077
1078         case LFUN_FONT_SIZE:
1079                 fontSize(bv_, ev.argument);
1080                 owner_->view_state_changed();
1081                 break;
1082
1083         case LFUN_FONT_STATE:
1084                 owner_->getLyXFunc().setMessage(currentState(bv_));
1085                 break;
1086
1087         case LFUN_INSERT_LABEL: {
1088                 // Try and generate a valid label
1089                 string const contents = ev.argument.empty() ?
1090                         getPossibleLabel(*bv_) : ev.argument;
1091                 InsetCommandParams icp("label", contents);
1092                 string data = InsetCommandMailer::params2string("label", icp);
1093                 owner_->getDialogs().show("label", data, 0);
1094         }
1095         break;
1096
1097         case LFUN_BOOKMARK_SAVE:
1098                 savePosition(strToUnsignedInt(ev.argument));
1099                 break;
1100
1101         case LFUN_BOOKMARK_GOTO:
1102                 restorePosition(strToUnsignedInt(ev.argument));
1103                 break;
1104
1105         case LFUN_REF_GOTO: {
1106                 string label = ev.argument;
1107                 if (label.empty()) {
1108                         InsetRef * inset =
1109                                 static_cast<InsetRef*>(getInsetByCode(InsetOld::REF_CODE));
1110                         if (inset) {
1111                                 label = inset->getContents();
1112                                 savePosition(0);
1113                         }
1114                 }
1115
1116                 if (!label.empty())
1117                         bv_->gotoLabel(label);
1118         }
1119         break;
1120
1121         // --- accented characters ---------------------------
1122
1123         case LFUN_UMLAUT:
1124         case LFUN_CIRCUMFLEX:
1125         case LFUN_GRAVE:
1126         case LFUN_ACUTE:
1127         case LFUN_TILDE:
1128         case LFUN_CEDILLA:
1129         case LFUN_MACRON:
1130         case LFUN_DOT:
1131         case LFUN_UNDERDOT:
1132         case LFUN_UNDERBAR:
1133         case LFUN_CARON:
1134         case LFUN_SPECIAL_CARON:
1135         case LFUN_BREVE:
1136         case LFUN_TIE:
1137         case LFUN_HUNG_UMLAUT:
1138         case LFUN_CIRCLE:
1139         case LFUN_OGONEK:
1140                 if (ev.argument.empty()) {
1141                         // As always...
1142                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1143                 } else {
1144                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1145                         owner_->getIntl().getTransManager()
1146                                 .TranslateAndInsert(ev.argument[0], bv_->getLyXText());
1147                         update();
1148                 }
1149                 break;
1150
1151         case LFUN_MATH_MACRO:
1152         case LFUN_MATH_DELIM:
1153         case LFUN_INSERT_MATRIX:
1154         case LFUN_INSERT_MATH:
1155         case LFUN_MATH_IMPORT_SELECTION: // Imports LaTeX from the X selection
1156         case LFUN_MATH_DISPLAY:          // Open or create a displayed math inset
1157         case LFUN_MATH_MODE:             // Open or create an inlined math inset
1158                 mathDispatch(ev);
1159                 break;
1160
1161         case LFUN_INSET_APPLY: {
1162                 string const name = ev.getArg(0);
1163
1164                 InsetBase * inset = owner_->getDialogs().getOpenInset(name);
1165                 if (inset) {
1166                         // This works both for 'original' and 'mathed' insets.
1167                         // Note that the localDispatch performs updateInset
1168                         // also.
1169                         FuncRequest fr(bv_, LFUN_INSET_MODIFY, ev.argument);
1170                         inset->localDispatch(fr);
1171                 } else {
1172                         FuncRequest fr(bv_, LFUN_INSET_INSERT, ev.argument);
1173                         dispatch(fr);
1174                 }
1175         }
1176         break;
1177
1178         case LFUN_INSET_INSERT: {
1179                 InsetOld * inset = createInset(ev);
1180                 if (inset && insertInset(inset)) {
1181                         updateInset(inset);
1182
1183                         string const name = ev.getArg(0);
1184                         if (name == "bibitem") {
1185                                 // We need to do a redraw because the maximum
1186                                 // InsetBibitem width could have changed
1187 #warning check whether the update() is needed at all
1188                                 bv_->update();
1189                         }
1190                 } else {
1191                         delete inset;
1192                 }
1193         }
1194         break;
1195
1196         case LFUN_FLOAT_LIST:
1197                 if (tclass.floats().typeExist(ev.argument)) {
1198                         InsetOld * inset = new InsetFloatList(ev.argument);
1199                         if (!insertInset(inset, tclass.defaultLayoutName()))
1200                                 delete inset;
1201                 } else {
1202                         lyxerr << "Non-existent float type: "
1203                                << ev.argument << endl;
1204                 }
1205                 break;
1206
1207         case LFUN_LAYOUT_PARAGRAPH: {
1208                 string data;
1209                 params2string(*bv_->getLyXText()->cursor.par(), data);
1210
1211                 data = "show\n" + data;
1212                 bv_->owner()->getDialogs().show("paragraph", data);
1213                 break;
1214         }
1215
1216         case LFUN_PARAGRAPH_UPDATE: {
1217                 if (!bv_->owner()->getDialogs().visible("paragraph"))
1218                         break;
1219                 Paragraph const & par = *bv_->getLyXText()->cursor.par();
1220
1221                 string data;
1222                 params2string(par, data);
1223
1224                 // Will the paragraph accept changes from the dialog?
1225                 InsetOld * const inset = par.inInset();
1226                 bool const accept =
1227                         !(inset && inset->forceDefaultParagraphs(inset));
1228
1229                 data = "update " + tostr(accept) + '\n' + data;
1230                 bv_->owner()->getDialogs().update("paragraph", data);
1231                 break;
1232         }
1233
1234         case LFUN_PARAGRAPH_APPLY:
1235                 setParagraphParams(*bv_, ev.argument);
1236                 break;
1237
1238         case LFUN_THESAURUS_ENTRY:
1239         {
1240                 string arg = ev.argument;
1241
1242                 if (arg.empty()) {
1243                         arg = bv_->getLyXText()->selectionAsString(*buffer_,
1244                                                                    false);
1245
1246                         // FIXME
1247                         if (arg.size() > 100 || arg.empty()) {
1248                                 // Get word or selection
1249                                 bv_->getLyXText()->selectWordWhenUnderCursor(lyx::WHOLE_WORD);
1250                                 arg = bv_->getLyXText()->selectionAsString(*buffer_, false);
1251                                 // FIXME: where is getLyXText()->unselect(bv_) ?
1252                         }
1253                 }
1254
1255                 bv_->owner()->getDialogs().show("thesaurus", arg);
1256         }
1257                 break;
1258
1259         case LFUN_TRACK_CHANGES:
1260                 trackChanges();
1261                 break;
1262
1263         case LFUN_MERGE_CHANGES:
1264                 owner_->getDialogs().show("changes");
1265                 break;
1266
1267         case LFUN_ACCEPT_ALL_CHANGES: {
1268                 bv_->text->setCursor(bv_->buffer()->paragraphs().begin(), 0);
1269 #warning FIXME changes
1270                 //moveCursorUpdate(false);
1271
1272                 while (lyx::find::findNextChange(bv_))
1273                         bv_->getLyXText()->acceptChange();
1274
1275                 update();
1276                 break;
1277         }
1278
1279         case LFUN_REJECT_ALL_CHANGES: {
1280                 bv_->text->setCursor(bv_->buffer()->paragraphs().begin(), 0);
1281 #warning FIXME changes
1282                 //moveCursorUpdate(false);
1283
1284                 while (lyx::find::findNextChange(bv_))
1285                         bv_->getLyXText()->rejectChange();
1286
1287                 update();
1288                 break;
1289         }
1290
1291         case LFUN_ACCEPT_CHANGE: {
1292                 bv_->getLyXText()->acceptChange();
1293                 update();
1294                 break;
1295         }
1296
1297         case LFUN_REJECT_CHANGE: {
1298                 bv_->getLyXText()->rejectChange();
1299                 update();
1300                 break;
1301         }
1302
1303         case LFUN_UNKNOWN_ACTION:
1304                 ev.errorMessage(N_("Unknown function!"));
1305                 break;
1306
1307         default:
1308                 return bv_->getLyXText()->dispatch(FuncRequest(ev, bv_));
1309         } // end of switch
1310
1311         return true;
1312 }
1313
1314
1315 bool BufferView::Pimpl::insertInset(InsetOld * inset, string const & lout)
1316 {
1317         // if we are in a locking inset we should try to insert the
1318         // inset there otherwise this is a illegal function now
1319         if (bv_->theLockingInset()) {
1320                 if (bv_->theLockingInset()->insetAllowed(inset))
1321                         return bv_->theLockingInset()->insertInset(bv_, inset);
1322                 return false;
1323         }
1324
1325         // not quite sure if we want this...
1326         recordUndo(bv_, Undo::ATOMIC);
1327         freezeUndo();
1328
1329         beforeChange(bv_->text);
1330         if (!lout.empty()) {
1331                 bv_->text->breakParagraph(bv_->buffer()->paragraphs());
1332
1333                 if (!bv_->text->cursor.par()->empty()) {
1334                         bv_->text->cursorLeft(bv_);
1335                         bv_->text->breakParagraph(bv_->buffer()->paragraphs());
1336                 }
1337
1338                 string lres = lout;
1339                 LyXTextClass const & tclass = buffer_->params().getLyXTextClass();
1340                 bool hasLayout = tclass.hasLayout(lres);
1341                 string lay = tclass.defaultLayoutName();
1342
1343                 if (hasLayout != false) {
1344                         // layout found
1345                         lay = lres;
1346                 } else {
1347                         // layout not fount using default
1348                         lay = tclass.defaultLayoutName();
1349                 }
1350
1351                 bv_->text->setLayout(lay);
1352
1353                 bv_->text->setParagraph(0, 0,
1354                                    0, 0,
1355                                    VSpace(VSpace::NONE), VSpace(VSpace::NONE),
1356                                    Spacing(),
1357                                    LYX_ALIGN_LAYOUT,
1358                                    string(),
1359                                    0);
1360         }
1361
1362         bv_->text->insertInset(inset);
1363         update();
1364
1365         unFreezeUndo();
1366         return true;
1367 }
1368
1369
1370 void BufferView::Pimpl::updateInset(InsetOld const * inset)
1371 {
1372         if (!available())
1373                 return;
1374
1375         bv_->text->redoParagraph(outerPar(*bv_->buffer(), inset));
1376
1377         // this should not be needed, but it is...
1378         // bv_->text->redoParagraph(bv_->text->cursor.par());
1379         // bv_->text->fullRebreak();
1380
1381         update();
1382         updateScrollbar();
1383 }
1384
1385
1386 bool BufferView::Pimpl::ChangeInsets(InsetOld::Code code,
1387                                      string const & from, string const & to)
1388 {
1389         bool need_update = false;
1390         LyXCursor cursor = bv_->text->cursor;
1391         LyXCursor tmpcursor = cursor;
1392         cursor.par(tmpcursor.par());
1393         cursor.pos(tmpcursor.pos());
1394
1395         ParIterator end = bv_->buffer()->par_iterator_end();
1396         for (ParIterator it = bv_->buffer()->par_iterator_begin();
1397              it != end; ++it) {
1398                 bool changed_inset = false;
1399                 for (InsetList::iterator it2 = it->insetlist.begin();
1400                      it2 != it->insetlist.end(); ++it2) {
1401                         if (it2->inset->lyxCode() == code) {
1402                                 InsetCommand * inset = static_cast<InsetCommand *>(it2->inset);
1403                                 if (inset->getContents() == from) {
1404                                         inset->setContents(to);
1405                                         changed_inset = true;
1406                                 }
1407                         }
1408                 }
1409                 if (changed_inset) {
1410                         need_update = true;
1411
1412                         // FIXME
1413
1414                         // The test it.size()==1 was needed to prevent crashes.
1415                         // How to set the cursor corretly when it.size()>1 ??
1416                         if (it.size() == 1) {
1417                                 bv_->text->setCursorIntern(it.pit(), 0);
1418                                 bv_->text->redoParagraph(bv_->text->cursor.par());
1419                         }
1420                 }
1421         }
1422         bv_->text->setCursorIntern(cursor.par(), cursor.pos());
1423         return need_update;
1424 }