src/BufferView_pimpl.C

   1 /**
   2  * \file BufferView_pimpl.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Asger Alstrup
   7  * \author Alfredo Braustein
   8  * \author Lars Gullik Bjønnes
   9  * \author Jean-Marc Lasgouttes
  10  * \author Angus Leeming
  11  * \author John Levon
  12  * \author André Pönitz
  13  * \author Dekel Tsur
  14  * \author Jürgen Vigna
  15  *
  16  * Full author contact details are available in file CREDITS.
  17  */
  18
  19 #include <config.h>
  20
  21 #include "BufferView_pimpl.h"
  22 #include "buffer.h"
  23 #include "buffer_funcs.h"
  24 #include "bufferlist.h"
  25 #include "bufferparams.h"
  26 #include "cursor.h"
  27 #include "debug.h"
  28 #include "factory.h"
  29 #include "FloatList.h"
  30 #include "funcrequest.h"
  31 #include "gettext.h"
  32 #include "intl.h"
  33 #include "iterators.h"
  34 #include "lyx_cb.h" // added for Dispatch functions
  35 #include "lyx_main.h"
  36 #include "lyxfind.h"
  37 #include "lyxfunc.h"
  38 #include "lyxtext.h"
  39 #include "lyxrc.h"
  40 #include "lastfiles.h"
  41 #include "paragraph.h"
  42 #include "paragraph_funcs.h"
  43 #include "ParagraphParameters.h"
  44 #include "undo.h"
  45 #include "vspace.h"
  46
  47 #include "insets/insetfloatlist.h"
  48 #include "insets/insetref.h"
  49
  50 #include "frontends/Alert.h"
  51 #include "frontends/Dialogs.h"
  52 #include "frontends/FileDialog.h"
  53 #include "frontends/LyXView.h"
  54 #include "frontends/LyXScreenFactory.h"
  55 #include "frontends/screen.h"
  56 #include "frontends/WorkArea.h"
  57 #include "frontends/WorkAreaFactory.h"
  58
  59 #include "graphics/Previews.h"
  60
  61 #include "mathed/formulabase.h"
  62
  63 #include "support/filetools.h"
  64 #include "support/path_defines.h"
  65 #include "support/tostr.h"
  66
  67 #include <boost/bind.hpp>
  68
  69 using bv_funcs::bold;
  70 using bv_funcs::code;
  71 using bv_funcs::currentState;
  72 using bv_funcs::emph;
  73 using bv_funcs::fontSize;
  74 using bv_funcs::lang;
  75 using bv_funcs::noun;
  76 using bv_funcs::roman;
  77 using bv_funcs::sans;
  78 using bv_funcs::styleReset;
  79 using bv_funcs::underline;
  80
  81 using lyx::pos_type;
  82
  83 using lyx::support::AddPath;
  84 using lyx::support::bformat;
  85 using lyx::support::FileSearch;
  86 using lyx::support::IsDirWriteable;
  87 using lyx::support::MakeDisplayPath;
  88 using lyx::support::strToUnsignedInt;
  89 using lyx::support::system_lyxdir;
  90
  91 using std::endl;
  92 using std::make_pair;
  93 using std::min;
  94 using std::string;
  95
  96
  97 extern BufferList bufferlist;
  98
  99
 100 namespace {
 101
 102 unsigned int const saved_positions_num = 20;
 103
 104 // All the below connection objects are needed because of a bug in some
 105 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
 106 // to these connections we avoid a segfault upon startup, and also at exit.
 107 // (Lgb)
 108
 109 boost::signals::connection dispatchcon;
 110 boost::signals::connection timecon;
 111 boost::signals::connection doccon;
 112 boost::signals::connection resizecon;
 113 boost::signals::connection kpresscon;
 114 boost::signals::connection selectioncon;
 115 boost::signals::connection lostcon;
 116
 117
 118 } // anon namespace
 119
 120
 121 BufferView::Pimpl::Pimpl(BufferView * bv, LyXView * owner,
 122              int xpos, int ypos, int width, int height)
 123         : bv_(bv), owner_(owner), buffer_(0), cursor_timeout(400),
 124           using_xterm_cursor(false)
 125 {
 126         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 127         screen_.reset(LyXScreenFactory::create(workarea()));
 128
 129         // Setup the signals
 130         doccon = workarea().scrollDocView
 131                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 132         resizecon = workarea().workAreaResize
 133                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 134         dispatchcon = workarea().dispatch
 135                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 136         kpresscon = workarea().workAreaKeyPress
 137                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 138         selectioncon = workarea().selectionRequested
 139                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 140         lostcon = workarea().selectionLost
 141                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 142
 143         timecon = cursor_timeout.timeout
 144                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 145         cursor_timeout.start();
 146         saved_positions.resize(saved_positions_num);
 147 }
 148
 149
 150 void BufferView::Pimpl::addError(ErrorItem const & ei)
 151 {
 152         errorlist_.push_back(ei);
 153 }
 154
 155
 156 void BufferView::Pimpl::showReadonly(bool)
 157 {
 158         owner_->updateWindowTitle();
 159         owner_->getDialogs().updateBufferDependent(false);
 160 }
 161
 162
 163 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 164 {
 165         if (errorConnection_.connected())
 166                 disconnectBuffer();
 167
 168         errorConnection_ = buf.error.connect(boost::bind(&BufferView::Pimpl::addError, this, _1));
 169         messageConnection_ = buf.message.connect(boost::bind(&LyXView::message, owner_, _1));
 170         busyConnection_ = buf.busy.connect(boost::bind(&LyXView::busy, owner_, _1));
 171         titleConnection_ = buf.updateTitles.connect(boost::bind(&LyXView::updateWindowTitle, owner_));
 172         timerConnection_ = buf.resetAutosaveTimers.connect(boost::bind(&LyXView::resetAutosaveTimer, owner_));
 173         readonlyConnection_ = buf.readonly.connect(boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 174         closingConnection_ = buf.closing.connect(boost::bind(&BufferView::Pimpl::buffer, this, (Buffer *)0));
 175 }
 176
 177
 178 void BufferView::Pimpl::disconnectBuffer()
 179 {
 180         errorConnection_.disconnect();
 181         messageConnection_.disconnect();
 182         busyConnection_.disconnect();
 183         titleConnection_.disconnect();
 184         timerConnection_.disconnect();
 185         readonlyConnection_.disconnect();
 186         closingConnection_.disconnect();
 187 }
 188
 189
 190 bool BufferView::Pimpl::newFile(string const & filename,
 191                                 string const & tname,
 192                                 bool isNamed)
 193 {
 194         Buffer * b = ::newFile(filename, tname, isNamed);
 195         buffer(b);
 196         return true;
 197 }
 198
 199
 200 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 201 {
 202         // get absolute path of file and add ".lyx" to the filename if
 203         // necessary
 204         string s = FileSearch(string(), filename, "lyx");
 205
 206         bool const found = !s.empty();
 207
 208         if (!found)
 209                 s = filename;
 210
 211         // file already open?
 212         if (bufferlist.exists(s)) {
 213                 string const file = MakeDisplayPath(s, 20);
 214                 string text = bformat(_("The document %1$s is already "
 215                                         "loaded.\n\nDo you want to revert "
 216                                         "to the saved version?"), file);
 217                 int const ret = Alert::prompt(_("Revert to saved document?"),
 218                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 219
 220                 if (ret != 0) {
 221                         buffer(bufferlist.getBuffer(s));
 222                         return true;
 223                 } else {
 224                         // FIXME: should be LFUN_REVERT
 225                         if (!bufferlist.close(bufferlist.getBuffer(s), false))
 226                                 return false;
 227                         // Fall through to new load. (Asger)
 228                 }
 229         }
 230
 231         Buffer * b;
 232
 233         if (found) {
 234                 b = bufferlist.newBuffer(s);
 235                 connectBuffer(*b);
 236                 if (!::loadLyXFile(b, s)) {
 237                         bufferlist.release(b);
 238                         return false;
 239                 }
 240         } else {
 241                 string text = bformat(_("The document %1$s does not yet "
 242                                         "exist.\n\nDo you want to create "
 243                                         "a new document?"), s);
 244                 int const ret = Alert::prompt(_("Create new document?"),
 245                          text, 0, 1, _("&Create"), _("Cancel"));
 246
 247                 if (ret == 0)
 248                         b = ::newFile(s, string(), true);
 249                 else
 250                         return false;
 251         }
 252
 253         buffer(b);
 254         bv_->showErrorList(_("Parse"));
 255
 256         if (tolastfiles)
 257                 LyX::ref().lastfiles().newFile(b->fileName());
 258
 259         return true;
 260 }
 261
 262
 263 WorkArea & BufferView::Pimpl::workarea() const
 264 {
 265         return *workarea_.get();
 266 }
 267
 268
 269 LyXScreen & BufferView::Pimpl::screen() const
 270 {
 271         return *screen_.get();
 272 }
 273
 274
 275 Painter & BufferView::Pimpl::painter() const
 276 {
 277         return workarea().getPainter();
 278 }
 279
 280
 281 void BufferView::Pimpl::top_y(int y)
 282 {
 283         top_y_ = y;
 284 }
 285
 286
 287 int BufferView::Pimpl::top_y() const
 288 {
 289         return top_y_;
 290 }
 291
 292
 293 void BufferView::Pimpl::buffer(Buffer * b)
 294 {
 295         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 296                             << b << ')' << endl;
 297         if (buffer_) {
 298                 disconnectBuffer();
 299                 delete bv_->text;
 300                 bv_->text = 0;
 301         }
 302
 303         // set current buffer
 304         buffer_ = b;
 305
 306         top_y_ = 0;
 307
 308         // if we're quitting lyx, don't bother updating stuff
 309         if (quitting)
 310                 return;
 311
 312         // if we are closing the buffer, use the first buffer as current
 313         if (!buffer_)
 314                 buffer_ = bufferlist.first();
 315
 316         if (buffer_) {
 317                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 318                 connectBuffer(*buffer_);
 319
 320                 // If we don't have a text object for this, we make one
 321                 if (bv_->text == 0)
 322                         resizeCurrentBuffer();
 323
 324                 // FIXME: needed when ?
 325                 top_y(screen().topCursorVisible(bv_->text));
 326
 327                 // Buffer-dependent dialogs should be updated or
 328                 // hidden. This should go here because some dialogs (eg ToC)
 329                 // require bv_->text.
 330                 owner_->getDialogs().updateBufferDependent(true);
 331         } else {
 332                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 333                 owner_->getDialogs().hideBufferDependent();
 334         }
 335
 336         update();
 337         updateScrollbar();
 338         owner_->updateMenubar();
 339         owner_->updateToolbar();
 340         owner_->updateLayoutChoice();
 341         owner_->updateWindowTitle();
 342
 343         if (buffer_) {
 344                 // Don't forget to update the Layout
 345                 string const layoutname =
 346                         bv_->text->cursorPar()->layout()->name();
 347                 owner_->setLayout(layoutname);
 348         }
 349
 350         if (lyx::graphics::Previews::activated() && buffer_)
 351                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 352 }
 353
 354
 355 bool BufferView::Pimpl::fitCursor()
 356 {
 357         bool ret;
 358
 359         if (bv_->theLockingInset()) {
 360                 bv_->theLockingInset()->fitInsetCursor(bv_);
 361                 ret = true;
 362         } else {
 363                 ret = screen().fitCursor(bv_->text, bv_);
 364         }
 365
 366         //dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
 367
 368         // We need to always update, in case we did a
 369         // paste and we stayed anchored to a row, but
 370         // the actual height of the doc changed ...
 371         updateScrollbar();
 372         return ret;
 373 }
 374
 375
 376 void BufferView::Pimpl::redoCurrentBuffer()
 377 {
 378         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 379         if (buffer_ && bv_->text) {
 380                 resizeCurrentBuffer();
 381                 updateScrollbar();
 382                 owner_->updateLayoutChoice();
 383                 update();
 384         }
 385 }
 386
 387
 388 void BufferView::Pimpl::resizeCurrentBuffer()
 389 {
 390         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 391
 392         int par = -1;
 393         int selstartpar = -1;
 394         int selendpar = -1;
 395         UpdatableInset * the_locking_inset = 0;
 396
 397         pos_type pos = 0;
 398         pos_type selstartpos = 0;
 399         pos_type selendpos = 0;
 400         bool selection = false;
 401         bool mark_set  = false;
 402
 403         owner_->busy(true);
 404
 405         owner_->message(_("Formatting document..."));
 406
 407         if (bv_->text) {
 408                 par = bv_->text->cursor.par();
 409                 pos = bv_->text->cursor.pos();
 410                 selstartpar = bv_->text->selection.start.par();
 411                 selstartpos = bv_->text->selection.start.pos();
 412                 selendpar = bv_->text->selection.end.par();
 413                 selendpos = bv_->text->selection.end.pos();
 414                 selection = bv_->text->selection.set();
 415                 mark_set = bv_->text->selection.mark();
 416                 the_locking_inset = bv_->theLockingInset();
 417                 bv_->text->fullRebreak();
 418                 update();
 419         } else {
 420                 lyxerr << "text not available!" << endl;
 421                         lyxerr << "no text in cache!" << endl;
 422                         bv_->text = new LyXText(bv_, 0, false, bv_->buffer()->paragraphs());
 423                         bv_->text->init(bv_);
 424         }
 425
 426         if (par != -1) {
 427                 bv_->text->selection.set(true);
 428                 // At this point just to avoid the Delete-Empty-Paragraph-
 429                 // Mechanism when setting the cursor.
 430                 bv_->text->selection.mark(mark_set);
 431                 if (selection) {
 432                         bv_->text->setCursor(selstartpar, selstartpos);
 433                         bv_->text->selection.cursor = bv_->text->cursor;
 434                         bv_->text->setCursor(selendpar, selendpos);
 435                         bv_->text->setSelection();
 436                         bv_->text->setCursor(par, pos);
 437                 } else {
 438                         bv_->text->setCursor(par, pos);
 439                         bv_->text->selection.cursor = bv_->text->cursor;
 440                         bv_->text->selection.set(false);
 441                 }
 442                 // remake the inset locking
 443                 bv_->theLockingInset(the_locking_inset);
 444         }
 445
 446         top_y(screen().topCursorVisible(bv_->text));
 447
 448         switchKeyMap();
 449         owner_->busy(false);
 450
 451         // reset the "Formatting..." message
 452         owner_->clearMessage();
 453
 454         updateScrollbar();
 455 }
 456
 457
 458 void BufferView::Pimpl::updateScrollbar()
 459 {
 460         if (!bv_->text) {
 461                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 462                 workarea().setScrollbarParams(0, 0, 0);
 463                 return;
 464         }
 465
 466         LyXText const & t = *bv_->text;
 467
 468         lyxerr[Debug::GUI] << "Updating scrollbar: h " << t.height << ", top_y() "
 469                 << top_y() << ", default height " << defaultRowHeight() << endl;
 470
 471         workarea().setScrollbarParams(t.height, top_y(), defaultRowHeight());
 472 }
 473
 474
 475 void BufferView::Pimpl::scrollDocView(int value)
 476 {
 477         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 478
 479         if (!buffer_)
 480                 return;
 481
 482         screen().hideCursor();
 483
 484         top_y(value);
 485         screen().redraw(*bv_);
 486
 487         if (!lyxrc.cursor_follows_scrollbar)
 488                 return;
 489
 490         int const height = defaultRowHeight();
 491         int const first = top_y() + height;
 492         int const last = top_y() + workarea().workHeight() - height;
 493
 494         LyXText * text = bv_->text;
 495         if (text->cursor.y() < first)
 496                 text->setCursorFromCoordinates(0, first);
 497         else if (text->cursor.y() > last)
 498                 text->setCursorFromCoordinates(0, last);
 499
 500         owner_->updateLayoutChoice();
 501 }
 502
 503
 504 void BufferView::Pimpl::scroll(int lines)
 505 {
 506         if (!buffer_) {
 507                 return;
 508         }
 509
 510         LyXText const * t = bv_->text;
 511         int const line_height = defaultRowHeight();
 512
 513         // The new absolute coordinate
 514         int new_top_y = top_y() + lines * line_height;
 515
 516         // Restrict to a valid value
 517         new_top_y = std::min(t->height - 4 * line_height, new_top_y);
 518         new_top_y = std::max(0, new_top_y);
 519
 520         scrollDocView(new_top_y);
 521
 522         // Update the scrollbar.
 523         workarea().setScrollbarParams(t->height, top_y(), defaultRowHeight());
 524 }
 525
 526
 527 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 528                                          key_modifier::state state)
 529 {
 530         bv_->owner()->getLyXFunc().processKeySym(key, state);
 531
 532         /* This is perhaps a bit of a hack. When we move
 533          * around, or type, it's nice to be able to see
 534          * the cursor immediately after the keypress. So
 535          * we reset the toggle timeout and force the visibility
 536          * of the cursor. Note we cannot do this inside
 537          * dispatch() itself, because that's called recursively.
 538          */
 539         if (available()) {
 540                 cursor_timeout.restart();
 541                 screen().showCursor(*bv_);
 542         }
 543 }
 544
 545
 546 void BufferView::Pimpl::selectionRequested()
 547 {
 548         static string sel;
 549
 550         if (!available())
 551                 return;
 552
 553         LyXText * text = bv_->getLyXText();
 554
 555         if (text->selection.set() &&
 556                 (!bv_->text->xsel_cache.set() ||
 557                  text->selection.start != bv_->text->xsel_cache.start ||
 558                  text->selection.end != bv_->text->xsel_cache.end))
 559         {
 560                 bv_->text->xsel_cache = text->selection;
 561                 sel = text->selectionAsString(*bv_->buffer(), false);
 562         } else if (!text->selection.set()) {
 563                 sel = string();
 564                 bv_->text->xsel_cache.set(false);
 565         }
 566         if (!sel.empty()) {
 567                 workarea().putClipboard(sel);
 568         }
 569 }
 570
 571
 572 void BufferView::Pimpl::selectionLost()
 573 {
 574         if (available()) {
 575                 screen().hideCursor();
 576                 bv_->getLyXText()->clearSelection();
 577                 bv_->text->xsel_cache.set(false);
 578         }
 579 }
 580
 581
 582 void BufferView::Pimpl::workAreaResize()
 583 {
 584         static int work_area_width;
 585         static int work_area_height;
 586
 587         bool const widthChange = workarea().workWidth() != work_area_width;
 588         bool const heightChange = workarea().workHeight() != work_area_height;
 589
 590         // update from work area
 591         work_area_width = workarea().workWidth();
 592         work_area_height = workarea().workHeight();
 593
 594         if (buffer_ != 0) {
 595                 if (widthChange) {
 596                         // The visible LyXView need a resize
 597                         resizeCurrentBuffer();
 598                 }
 599         }
 600
 601         if (widthChange || heightChange)
 602                 update();
 603
 604         // always make sure that the scrollbar is sane.
 605         updateScrollbar();
 606         owner_->updateLayoutChoice();
 607 }
 608
 609
 610 void BufferView::Pimpl::update()
 611 {
 612         //lyxerr << "BufferView::update()" << endl;
 613         // fix cursor coordinate cache in case something went wrong
 614         if (bv_->getLyXText()) {
 615                 // check needed to survive LyX startup
 616                 bv_->getLyXText()->redoCursor();
 617         }
 618         screen().redraw(*bv_);
 619 }
 620
 621
 622 // Callback for cursor timer
 623 void BufferView::Pimpl::cursorToggle()
 624 {
 625         if (!buffer_) {
 626                 cursor_timeout.restart();
 627                 return;
 628         }
 629
 630         screen().toggleCursor(*bv_);
 631
 632         cursor_timeout.restart();
 633 }
 634
 635
 636 bool BufferView::Pimpl::available() const
 637 {
 638         if (buffer_ && bv_->text)
 639                 return true;
 640         return false;
 641 }
 642
 643
 644 Change const BufferView::Pimpl::getCurrentChange()
 645 {
 646         if (!bv_->buffer()->params().tracking_changes)
 647                 return Change(Change::UNCHANGED);
 648
 649         LyXText * text = bv_->getLyXText();
 650
 651         if (!text->selection.set())
 652                 return Change(Change::UNCHANGED);
 653
 654         return text->getPar(text->selection.start)
 655                 ->lookupChangeFull(text->selection.start.pos());
 656 }
 657
 658
 659 void BufferView::Pimpl::beforeChange(LyXText * text)
 660 {
 661         text->clearSelection();
 662 }
 663
 664
 665 void BufferView::Pimpl::savePosition(unsigned int i)
 666 {
 667         if (i >= saved_positions_num)
 668                 return;
 669         saved_positions[i] = Position(buffer_->fileName(),
 670                                       bv_->text->cursorPar()->id(),
 671                                       bv_->text->cursor.pos());
 672         if (i > 0)
 673                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 674 }
 675
 676
 677 void BufferView::Pimpl::restorePosition(unsigned int i)
 678 {
 679         if (i >= saved_positions_num)
 680                 return;
 681
 682         string const fname = saved_positions[i].filename;
 683
 684         beforeChange(bv_->text);
 685
 686         if (fname != buffer_->fileName()) {
 687                 Buffer * b = 0;
 688                 if (bufferlist.exists(fname))
 689                         b = bufferlist.getBuffer(fname);
 690                 else {
 691                         b = bufferlist.newBuffer(fname);
 692                         ::loadLyXFile(b, fname); // don't ask, just load it
 693                 }
 694                 if (b)
 695                         buffer(b);
 696         }
 697
 698         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 699         if (par == buffer_->par_iterator_end())
 700                 return;
 701
 702         bv_->text->setCursor(par.pit(),
 703                              min(par->size(), saved_positions[i].par_pos));
 704
 705         update();
 706         if (i > 0)
 707                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 708 }
 709
 710
 711 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 712 {
 713         if (i >= saved_positions_num)
 714                 return false;
 715
 716         return !saved_positions[i].filename.empty();
 717 }
 718
 719
 720 void BufferView::Pimpl::switchKeyMap()
 721 {
 722         if (!lyxrc.rtl_support)
 723                 return;
 724
 725         LyXText * text = bv_->getLyXText();
 726         if (text->real_current_font.isRightToLeft()
 727             && !(bv_->theLockingInset()
 728                  && bv_->theLockingInset()->lyxCode() == InsetOld::ERT_CODE))
 729         {
 730                 if (owner_->getIntl().keymap == Intl::PRIMARY)
 731                         owner_->getIntl().KeyMapSec();
 732         } else {
 733                 if (owner_->getIntl().keymap == Intl::SECONDARY)
 734                         owner_->getIntl().KeyMapPrim();
 735         }
 736 }
 737
 738
 739 void BufferView::Pimpl::insetUnlock()
 740 {
 741         if (bv_->theLockingInset()) {
 742                 bv_->theLockingInset()->insetUnlock(bv_);
 743                 bv_->theLockingInset(0);
 744                 finishUndo();
 745         }
 746 }
 747
 748
 749 void BufferView::Pimpl::center()
 750 {
 751         LyXText * text = bv_->text;
 752
 753         beforeChange(text);
 754         int const half_height = workarea().workHeight() / 2;
 755         int new_y = std::max(0, text->cursor.y() - half_height);
 756
 757         // FIXME: look at this comment again ...
 758
 759         // FIXME: can we do this w/o calling screen directly ?
 760         // This updates top_y() but means the fitCursor() call
 761         // from the update(FITCUR) doesn't realise that we might
 762         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 763         // the scrollbar to be updated as it should, so we have
 764         // to do it manually. Any operation that does a center()
 765         // and also might have moved top_y() must make sure to call
 766         // updateScrollbar() currently. Never mind that this is a
 767         // pretty obfuscated way of updating t->top_y()
 768         top_y(new_y);
 769         //screen().draw();
 770         update();
 771 }
 772
 773
 774 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 775 {
 776         workarea().putClipboard(stuff);
 777 }
 778
 779
 780 /*
 781  * Dispatch functions for actions which can be valid for BufferView->text
 782  * and/or InsetText->text!!!
 783  */
 784
 785
 786 InsetOld * BufferView::Pimpl::getInsetByCode(InsetOld::Code code)
 787 {
 788 #if 0
 789         LyXCursor cursor = bv_->getLyXText()->cursor;
 790         Buffer::inset_iterator it =
 791                 find_if(Buffer::inset_iterator(
 792                         cursorPar(), cursor.pos()),
 793                         buffer_->inset_iterator_end(),
 794                         lyx::compare_memfun(&Inset::lyxCode, code));
 795         return it != buffer_->inset_iterator_end() ? (*it) : 0;
 796 #else
 797         // Ok, this is a little bit too brute force but it
 798         // should work for now. Better infrastructure is coming. (Lgb)
 799
 800         Buffer * b = bv_->buffer();
 801         LyXText * text =  bv_->getLyXText();
 802
 803         Buffer::inset_iterator beg = b->inset_iterator_begin();
 804         Buffer::inset_iterator end = b->inset_iterator_end();
 805
 806         bool cursorPar_seen = false;
 807
 808         for (; beg != end; ++beg) {
 809                 if (beg.getPar() == text->cursorPar()) {
 810                         cursorPar_seen = true;
 811                 }
 812                 if (cursorPar_seen) {
 813                         if (beg.getPar() == text->cursorPar()
 814                             && beg.getPos() >= text->cursor.pos()) {
 815                                 break;
 816                         } else if (beg.getPar() != text->cursorPar()) {
 817                                 break;
 818                         }
 819                 }
 820
 821         }
 822         if (beg != end) {
 823                 // Now find the first inset that matches code.
 824                 for (; beg != end; ++beg) {
 825                         if (beg->lyxCode() == code) {
 826                                 return &(*beg);
 827                         }
 828                 }
 829         }
 830         return 0;
 831 #endif
 832 }
 833
 834
 835 void BufferView::Pimpl::MenuInsertLyXFile(string const & filen)
 836 {
 837         string filename = filen;
 838
 839         if (filename.empty()) {
 840                 // Launch a file browser
 841                 string initpath = lyxrc.document_path;
 842
 843                 if (available()) {
 844                         string const trypath = owner_->buffer()->filePath();
 845                         // If directory is writeable, use this as default.
 846                         if (IsDirWriteable(trypath))
 847                                 initpath = trypath;
 848                 }
 849
 850                 FileDialog fileDlg(_("Select LyX document to insert"),
 851                         LFUN_FILE_INSERT,
 852                         make_pair(string(_("Documents|#o#O")),
 853                                   string(lyxrc.document_path)),
 854                         make_pair(string(_("Examples|#E#e")),
 855                                   string(AddPath(system_lyxdir(), "examples"))));
 856
 857                 FileDialog::Result result =
 858                         fileDlg.open(initpath,
 859                                        _("*.lyx| LyX Documents (*.lyx)"));
 860
 861                 if (result.first == FileDialog::Later)
 862                         return;
 863
 864                 filename = result.second;
 865
 866                 // check selected filename
 867                 if (filename.empty()) {
 868                         owner_->message(_("Canceled."));
 869                         return;
 870                 }
 871         }
 872
 873         // get absolute path of file and add ".lyx" to the filename if
 874         // necessary
 875         filename = FileSearch(string(), filename, "lyx");
 876
 877         string const disp_fn = MakeDisplayPath(filename);
 878         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 879         if (bv_->insertLyXFile(filename))
 880                 owner_->message(bformat(_("Document %1$s inserted."),
 881                                         disp_fn));
 882         else
 883                 owner_->message(bformat(_("Could not insert document %1$s"),
 884                                         disp_fn));
 885 }
 886
 887
 888 void BufferView::Pimpl::trackChanges()
 889 {
 890         Buffer * buf(bv_->buffer());
 891         bool const tracking(buf->params().tracking_changes);
 892
 893         if (!tracking) {
 894                 ParIterator const end = buf->par_iterator_end();
 895                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 896                         it->trackChanges();
 897                 buf->params().tracking_changes = true;
 898
 899                 // we cannot allow undos beyond the freeze point
 900                 buf->undostack().clear();
 901         } else {
 902                 update();
 903                 bv_->text->setCursor(0, 0);
 904 #warning changes FIXME
 905                 //moveCursorUpdate(false);
 906
 907                 bool found = lyx::find::findNextChange(bv_);
 908                 if (found) {
 909                         owner_->getDialogs().show("changes");
 910                         return;
 911                 }
 912
 913                 ParIterator const end = buf->par_iterator_end();
 914                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 915                         it->untrackChanges();
 916                 buf->params().tracking_changes = false;
 917         }
 918
 919         buf->redostack().clear();
 920 }
 921
 922
 923 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & ev)
 924 {
 925         switch (ev.action) {
 926         case LFUN_MOUSE_PRESS:
 927         case LFUN_MOUSE_MOTION:
 928         case LFUN_MOUSE_RELEASE:
 929         case LFUN_MOUSE_DOUBLE:
 930         case LFUN_MOUSE_TRIPLE:
 931         {
 932                 // We pass those directly to the Bufferview, since
 933                 // otherwise selection handling breaks down
 934
 935                 // Doesn't go through lyxfunc, so we need to update
 936                 // the layout choice etc. ourselves
 937
 938                 // e.g. Qt mouse press when no buffer
 939                 if (!available())
 940                         return false;
 941
 942                 screen().hideCursor();
 943
 944                 bool const res = dispatch(ev);
 945
 946                 // see workAreaKeyPress
 947                 cursor_timeout.restart();
 948                 screen().showCursor(*bv_);
 949
 950                 // FIXME: we should skip these when selecting
 951                 owner_->updateLayoutChoice();
 952                 owner_->updateToolbar();
 953                 fitCursor();
 954
 955                 // slight hack: this is only called currently when we
 956                 // clicked somewhere, so we force through the display
 957                 // of the new status here.
 958                 owner_->clearMessage();
 959
 960                 return res;
 961         }
 962         default:
 963                 owner_->dispatch(ev);
 964                 return true;
 965         }
 966 }
 967
 968
 969 bool BufferView::Pimpl::dispatch(FuncRequest const & ev_in)
 970 {
 971         // Make sure that the cached BufferView is correct.
 972         FuncRequest ev = ev_in;
 973         ev.setView(bv_);
 974
 975         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
 976                 << " action[" << ev.action << ']'
 977                 << " arg[" << ev.argument << ']'
 978                 << " x[" << ev.x << ']'
 979                 << " y[" << ev.y << ']'
 980                 << " button[" << ev.button() << ']'
 981                 << endl;
 982
 983         LyXTextClass const & tclass = buffer_->params().getLyXTextClass();
 984
 985         switch (ev.action) {
 986
 987         case LFUN_SCROLL_INSET:
 988                 // this is not handled here as this function is only active
 989                 // if we have a locking_inset and that one is (or contains)
 990                 // a tabular-inset
 991                 break;
 992
 993         case LFUN_FILE_INSERT:
 994                 MenuInsertLyXFile(ev.argument);
 995                 break;
 996
 997         case LFUN_FILE_INSERT_ASCII_PARA:
 998                 InsertAsciiFile(bv_, ev.argument, true);
 999                 break;
1000
1001         case LFUN_FILE_INSERT_ASCII:
1002                 InsertAsciiFile(bv_, ev.argument, false);
1003                 break;
1004
1005         case LFUN_LANGUAGE:
1006                 lang(bv_, ev.argument);
1007                 switchKeyMap();
1008                 owner_->view_state_changed();
1009                 break;
1010
1011         case LFUN_EMPH:
1012                 emph(bv_);
1013                 owner_->view_state_changed();
1014                 break;
1015
1016         case LFUN_BOLD:
1017                 bold(bv_);
1018                 owner_->view_state_changed();
1019                 break;
1020
1021         case LFUN_NOUN:
1022                 noun(bv_);
1023                 owner_->view_state_changed();
1024                 break;
1025
1026         case LFUN_CODE:
1027                 code(bv_);
1028                 owner_->view_state_changed();
1029                 break;
1030
1031         case LFUN_SANS:
1032                 sans(bv_);
1033                 owner_->view_state_changed();
1034                 break;
1035
1036         case LFUN_ROMAN:
1037                 roman(bv_);
1038                 owner_->view_state_changed();
1039                 break;
1040
1041         case LFUN_DEFAULT:
1042                 styleReset(bv_);
1043                 owner_->view_state_changed();
1044                 break;
1045
1046         case LFUN_UNDERLINE:
1047                 underline(bv_);
1048                 owner_->view_state_changed();
1049                 break;
1050
1051         case LFUN_FONT_SIZE:
1052                 fontSize(bv_, ev.argument);
1053                 owner_->view_state_changed();
1054                 break;
1055
1056         case LFUN_FONT_STATE:
1057                 owner_->getLyXFunc().setMessage(currentState(bv_));
1058                 break;
1059
1060         case LFUN_INSERT_LABEL: {
1061                 // Try and generate a valid label
1062                 string const contents = ev.argument.empty() ?
1063                         getPossibleLabel(*bv_) : ev.argument;
1064                 InsetCommandParams icp("label", contents);
1065                 string data = InsetCommandMailer::params2string("label", icp);
1066                 owner_->getDialogs().show("label", data, 0);
1067         }
1068         break;
1069
1070         case LFUN_BOOKMARK_SAVE:
1071                 savePosition(strToUnsignedInt(ev.argument));
1072                 break;
1073
1074         case LFUN_BOOKMARK_GOTO:
1075                 restorePosition(strToUnsignedInt(ev.argument));
1076                 break;
1077
1078         case LFUN_REF_GOTO: {
1079                 string label = ev.argument;
1080                 if (label.empty()) {
1081                         InsetRef * inset =
1082                                 static_cast<InsetRef*>(getInsetByCode(InsetOld::REF_CODE));
1083                         if (inset) {
1084                                 label = inset->getContents();
1085                                 savePosition(0);
1086                         }
1087                 }
1088
1089                 if (!label.empty())
1090                         bv_->gotoLabel(label);
1091         }
1092         break;
1093
1094         // --- accented characters ---------------------------
1095
1096         case LFUN_UMLAUT:
1097         case LFUN_CIRCUMFLEX:
1098         case LFUN_GRAVE:
1099         case LFUN_ACUTE:
1100         case LFUN_TILDE:
1101         case LFUN_CEDILLA:
1102         case LFUN_MACRON:
1103         case LFUN_DOT:
1104         case LFUN_UNDERDOT:
1105         case LFUN_UNDERBAR:
1106         case LFUN_CARON:
1107         case LFUN_SPECIAL_CARON:
1108         case LFUN_BREVE:
1109         case LFUN_TIE:
1110         case LFUN_HUNG_UMLAUT:
1111         case LFUN_CIRCLE:
1112         case LFUN_OGONEK:
1113                 if (ev.argument.empty()) {
1114                         // As always...
1115                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1116                 } else {
1117                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1118                         owner_->getIntl().getTransManager()
1119                                 .TranslateAndInsert(ev.argument[0], bv_->getLyXText());
1120                         update();
1121                 }
1122                 break;
1123
1124         case LFUN_MATH_MACRO:
1125         case LFUN_MATH_DELIM:
1126         case LFUN_INSERT_MATRIX:
1127         case LFUN_INSERT_MATH:
1128         case LFUN_MATH_IMPORT_SELECTION: // Imports LaTeX from the X selection
1129         case LFUN_MATH_DISPLAY:          // Open or create a displayed math inset
1130         case LFUN_MATH_MODE:             // Open or create an inlined math inset
1131                 mathDispatch(ev);
1132                 break;
1133
1134         case LFUN_INSET_APPLY: {
1135                 string const name = ev.getArg(0);
1136
1137                 InsetBase * inset = owner_->getDialogs().getOpenInset(name);
1138                 if (inset) {
1139                         // This works both for 'original' and 'mathed' insets.
1140                         // Note that the localDispatch performs updateInset
1141                         // also.
1142                         FuncRequest fr(bv_, LFUN_INSET_MODIFY, ev.argument);
1143                         inset->dispatch(fr);
1144                 } else {
1145                         FuncRequest fr(bv_, LFUN_INSET_INSERT, ev.argument);
1146                         dispatch(fr);
1147                 }
1148         }
1149         break;
1150
1151         case LFUN_INSET_INSERT: {
1152                 InsetOld * inset = createInset(ev);
1153                 if (inset && insertInset(inset)) {
1154                         updateInset(inset);
1155
1156                         string const name = ev.getArg(0);
1157                         if (name == "bibitem") {
1158                                 // We need to do a redraw because the maximum
1159                                 // InsetBibitem width could have changed
1160 #warning check whether the update() is needed at all
1161                                 bv_->update();
1162                         }
1163                 } else {
1164                         delete inset;
1165                 }
1166         }
1167         break;
1168
1169         case LFUN_FLOAT_LIST:
1170                 if (tclass.floats().typeExist(ev.argument)) {
1171                         InsetOld * inset = new InsetFloatList(ev.argument);
1172                         if (!insertInset(inset, tclass.defaultLayoutName()))
1173                                 delete inset;
1174                 } else {
1175                         lyxerr << "Non-existent float type: "
1176                                << ev.argument << endl;
1177                 }
1178                 break;
1179
1180         case LFUN_LAYOUT_PARAGRAPH: {
1181                 string data;
1182                 params2string(*bv_->getLyXText()->cursorPar(), data);
1183
1184                 data = "show\n" + data;
1185                 bv_->owner()->getDialogs().show("paragraph", data);
1186                 break;
1187         }
1188
1189         case LFUN_PARAGRAPH_UPDATE: {
1190                 if (!bv_->owner()->getDialogs().visible("paragraph"))
1191                         break;
1192                 Paragraph const & par = *bv_->getLyXText()->cursorPar();
1193
1194                 string data;
1195                 params2string(par, data);
1196
1197                 // Will the paragraph accept changes from the dialog?
1198                 InsetOld * const inset = par.inInset();
1199                 bool const accept =
1200                         !(inset && inset->forceDefaultParagraphs(inset));
1201
1202                 data = "update " + tostr(accept) + '\n' + data;
1203                 bv_->owner()->getDialogs().update("paragraph", data);
1204                 break;
1205         }
1206
1207         case LFUN_PARAGRAPH_APPLY:
1208                 setParagraphParams(*bv_, ev.argument);
1209                 break;
1210
1211         case LFUN_THESAURUS_ENTRY:
1212         {
1213                 string arg = ev.argument;
1214
1215                 if (arg.empty()) {
1216                         arg = bv_->getLyXText()->selectionAsString(*buffer_,
1217                                                                    false);
1218
1219                         // FIXME
1220                         if (arg.size() > 100 || arg.empty()) {
1221                                 // Get word or selection
1222                                 bv_->getLyXText()->selectWordWhenUnderCursor(lyx::WHOLE_WORD);
1223                                 arg = bv_->getLyXText()->selectionAsString(*buffer_, false);
1224                                 // FIXME: where is getLyXText()->unselect(bv_) ?
1225                         }
1226                 }
1227
1228                 bv_->owner()->getDialogs().show("thesaurus", arg);
1229         }
1230                 break;
1231
1232         case LFUN_TRACK_CHANGES:
1233                 trackChanges();
1234                 break;
1235
1236         case LFUN_MERGE_CHANGES:
1237                 owner_->getDialogs().show("changes");
1238                 break;
1239
1240         case LFUN_ACCEPT_ALL_CHANGES: {
1241                 bv_->text->setCursor(0, 0);
1242 #warning FIXME changes
1243                 //moveCursorUpdate(false);
1244
1245                 while (lyx::find::findNextChange(bv_))
1246                         bv_->getLyXText()->acceptChange();
1247
1248                 update();
1249                 break;
1250         }
1251
1252         case LFUN_REJECT_ALL_CHANGES: {
1253                 bv_->text->setCursor(0, 0);
1254 #warning FIXME changes
1255                 //moveCursorUpdate(false);
1256
1257                 while (lyx::find::findNextChange(bv_))
1258                         bv_->getLyXText()->rejectChange();
1259
1260                 update();
1261                 break;
1262         }
1263
1264         case LFUN_ACCEPT_CHANGE: {
1265                 bv_->getLyXText()->acceptChange();
1266                 update();
1267                 break;
1268         }
1269
1270         case LFUN_REJECT_CHANGE: {
1271                 bv_->getLyXText()->rejectChange();
1272                 update();
1273                 break;
1274         }
1275
1276         case LFUN_UNKNOWN_ACTION:
1277                 ev.errorMessage(N_("Unknown function!"));
1278                 break;
1279
1280         default:
1281                 return bv_->getLyXText()->dispatch(FuncRequest(ev, bv_));
1282         } // end of switch
1283
1284         return true;
1285 }
1286
1287
1288 bool BufferView::Pimpl::insertInset(InsetOld * inset, string const & lout)
1289 {
1290         // if we are in a locking inset we should try to insert the
1291         // inset there otherwise this is a illegal function now
1292         if (bv_->theLockingInset()) {
1293                 if (bv_->theLockingInset()->insetAllowed(inset))
1294                         return bv_->theLockingInset()->insertInset(bv_, inset);
1295                 return false;
1296         }
1297
1298         // not quite sure if we want this...
1299         bv_->text->recUndo(bv_->text->cursor.par());
1300         freezeUndo();
1301
1302         beforeChange(bv_->text);
1303         if (!lout.empty()) {
1304                 bv_->text->breakParagraph(bv_->buffer()->paragraphs());
1305
1306                 if (!bv_->text->cursorPar()->empty()) {
1307                         bv_->text->cursorLeft(bv_);
1308                         bv_->text->breakParagraph(bv_->buffer()->paragraphs());
1309                 }
1310
1311                 string lres = lout;
1312                 LyXTextClass const & tclass = buffer_->params().getLyXTextClass();
1313                 bool hasLayout = tclass.hasLayout(lres);
1314                 string lay = tclass.defaultLayoutName();
1315
1316                 if (hasLayout != false) {
1317                         // layout found
1318                         lay = lres;
1319                 } else {
1320                         // layout not fount using default
1321                         lay = tclass.defaultLayoutName();
1322                 }
1323
1324                 bv_->text->setLayout(lay);
1325
1326                 bv_->text->setParagraph(
1327                                    VSpace(VSpace::NONE), VSpace(VSpace::NONE),
1328                                    Spacing(),
1329                                    LYX_ALIGN_LAYOUT,
1330                                    string(),
1331                                    0);
1332         }
1333
1334         bv_->text->insertInset(inset);
1335         update();
1336
1337         unFreezeUndo();
1338         return true;
1339 }
1340
1341
1342 void BufferView::Pimpl::updateInset(InsetOld const * inset)
1343 {
1344         if (!available())
1345                 return;
1346
1347         bv_->text->redoParagraph(outerPar(*bv_->buffer(), inset));
1348
1349         // this should not be needed, but it is...
1350         // bv_->text->redoParagraph(bv_->text->cursorPar());
1351         // bv_->text->fullRebreak();
1352
1353         update();
1354         updateScrollbar();
1355 }
1356
1357
1358 bool BufferView::Pimpl::ChangeInsets(InsetOld::Code code,
1359                                      string const & from, string const & to)
1360 {
1361         bool need_update = false;
1362         LyXCursor cursor = bv_->text->cursor;
1363         LyXCursor tmpcursor = cursor;
1364         cursor.par(tmpcursor.par());
1365         cursor.pos(tmpcursor.pos());
1366
1367         ParIterator end = bv_->buffer()->par_iterator_end();
1368         for (ParIterator it = bv_->buffer()->par_iterator_begin();
1369              it != end; ++it) {
1370                 bool changed_inset = false;
1371                 for (InsetList::iterator it2 = it->insetlist.begin();
1372                      it2 != it->insetlist.end(); ++it2) {
1373                         if (it2->inset->lyxCode() == code) {
1374                                 InsetCommand * inset = static_cast<InsetCommand *>(it2->inset);
1375                                 if (inset->getContents() == from) {
1376                                         inset->setContents(to);
1377                                         changed_inset = true;
1378                                 }
1379                         }
1380                 }
1381                 if (changed_inset) {
1382                         need_update = true;
1383
1384                         // FIXME
1385
1386                         // The test it.size()==1 was needed to prevent crashes.
1387                         // How to set the cursor correctly when it.size()>1 ??
1388                         if (it.size() == 1) {
1389                                 bv_->text->setCursorIntern(bv_->text->parOffset(it.pit()), 0);
1390                                 bv_->text->redoParagraph(bv_->text->cursorPar());
1391                         }
1392                 }
1393         }
1394         bv_->text->setCursorIntern(cursor.par(), cursor.pos());
1395         return need_update;
1396 }