src/BufferView_pimpl.C

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