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 Braunstein
   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/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 "support/filetools.h"
  62 #include "support/globbing.h"
  63 #include "support/path_defines.h"
  64 #include "support/tostr.h"
  65
  66 #include <boost/bind.hpp>
  67
  68 using lyx::pos_type;
  69
  70 using lyx::support::AddPath;
  71 using lyx::support::bformat;
  72 using lyx::support::FileFilterList;
  73 using lyx::support::FileSearch;
  74 using lyx::support::IsDirWriteable;
  75 using lyx::support::MakeDisplayPath;
  76 using lyx::support::strToUnsignedInt;
  77 using lyx::support::system_lyxdir;
  78
  79 using std::endl;
  80 using std::make_pair;
  81 using std::min;
  82 using std::string;
  83
  84
  85 extern BufferList bufferlist;
  86
  87
  88 namespace {
  89
  90 unsigned int const saved_positions_num = 20;
  91
  92 // All the below connection objects are needed because of a bug in some
  93 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
  94 // to these connections we avoid a segfault upon startup, and also at exit.
  95 // (Lgb)
  96
  97 boost::signals::connection dispatchcon;
  98 boost::signals::connection timecon;
  99 boost::signals::connection doccon;
 100 boost::signals::connection resizecon;
 101 boost::signals::connection kpresscon;
 102 boost::signals::connection selectioncon;
 103 boost::signals::connection lostcon;
 104
 105
 106 } // anon namespace
 107
 108
 109 BufferView::Pimpl::Pimpl(BufferView & bv, LyXView * owner,
 110              int xpos, int ypos, int width, int height)
 111         : bv_(&bv), owner_(owner), buffer_(0), cursor_timeout(400),
 112           using_xterm_cursor(false), cursor_(bv)
 113 {
 114         xsel_cache_.set = false;
 115
 116         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 117         screen_.reset(LyXScreenFactory::create(workarea()));
 118
 119         // Setup the signals
 120         doccon = workarea().scrollDocView
 121                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 122         resizecon = workarea().workAreaResize
 123                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 124         dispatchcon = workarea().dispatch
 125                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 126         kpresscon = workarea().workAreaKeyPress
 127                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 128         selectioncon = workarea().selectionRequested
 129                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 130         lostcon = workarea().selectionLost
 131                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 132
 133         timecon = cursor_timeout.timeout
 134                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 135         cursor_timeout.start();
 136         saved_positions.resize(saved_positions_num);
 137 }
 138
 139
 140 void BufferView::Pimpl::addError(ErrorItem const & ei)
 141 {
 142         errorlist_.push_back(ei);
 143 }
 144
 145
 146 void BufferView::Pimpl::showReadonly(bool)
 147 {
 148         owner_->updateWindowTitle();
 149         owner_->getDialogs().updateBufferDependent(false);
 150 }
 151
 152
 153 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 154 {
 155         if (errorConnection_.connected())
 156                 disconnectBuffer();
 157
 158         errorConnection_ =
 159                 buf.error.connect(boost::bind(&BufferView::Pimpl::addError, this, _1));
 160         messageConnection_ =
 161                 buf.message.connect(boost::bind(&LyXView::message, owner_, _1));
 162         busyConnection_ =
 163                 buf.busy.connect(boost::bind(&LyXView::busy, owner_, _1));
 164         titleConnection_ =
 165                 buf.updateTitles.connect(boost::bind(&LyXView::updateWindowTitle, owner_));
 166         timerConnection_ =
 167                 buf.resetAutosaveTimers.connect(boost::bind(&LyXView::resetAutosaveTimer, owner_));
 168         readonlyConnection_ =
 169                 buf.readonly.connect(boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 170         closingConnection_ =
 171                 buf.closing.connect(boost::bind(&BufferView::Pimpl::buffer, this, (Buffer *)0));
 172 }
 173
 174
 175 void BufferView::Pimpl::disconnectBuffer()
 176 {
 177         errorConnection_.disconnect();
 178         messageConnection_.disconnect();
 179         busyConnection_.disconnect();
 180         titleConnection_.disconnect();
 181         timerConnection_.disconnect();
 182         readonlyConnection_.disconnect();
 183         closingConnection_.disconnect();
 184 }
 185
 186
 187 bool BufferView::Pimpl::newFile(string const & filename,
 188                                 string const & tname,
 189                                 bool isNamed)
 190 {
 191         Buffer * b = ::newFile(filename, tname, isNamed);
 192         buffer(b);
 193         return true;
 194 }
 195
 196
 197 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 198 {
 199         // get absolute path of file and add ".lyx" to the filename if
 200         // necessary
 201         string s = FileSearch(string(), filename, "lyx");
 202
 203         bool const found = !s.empty();
 204
 205         if (!found)
 206                 s = filename;
 207
 208         // file already open?
 209         if (bufferlist.exists(s)) {
 210                 string const file = MakeDisplayPath(s, 20);
 211                 string text = bformat(_("The document %1$s is already "
 212                                         "loaded.\n\nDo you want to revert "
 213                                         "to the saved version?"), file);
 214                 int const ret = Alert::prompt(_("Revert to saved document?"),
 215                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 216
 217                 if (ret != 0) {
 218                         buffer(bufferlist.getBuffer(s));
 219                         return true;
 220                 } else {
 221                         // FIXME: should be LFUN_REVERT
 222                         if (!bufferlist.close(bufferlist.getBuffer(s), false))
 223                                 return false;
 224                         // Fall through to new load. (Asger)
 225                 }
 226         }
 227
 228         Buffer * b;
 229
 230         if (found) {
 231                 b = bufferlist.newBuffer(s);
 232                 connectBuffer(*b);
 233                 if (!::loadLyXFile(b, s)) {
 234                         bufferlist.release(b);
 235                         return false;
 236                 }
 237         } else {
 238                 string text = bformat(_("The document %1$s does not yet "
 239                                         "exist.\n\nDo you want to create "
 240                                         "a new document?"), s);
 241                 int const ret = Alert::prompt(_("Create new document?"),
 242                          text, 0, 1, _("&Create"), _("Cancel"));
 243
 244                 if (ret == 0)
 245                         b = ::newFile(s, string(), true);
 246                 else
 247                         return false;
 248         }
 249
 250         buffer(b);
 251         bv_->showErrorList(_("Parse"));
 252
 253         if (tolastfiles)
 254                 LyX::ref().lastfiles().newFile(b->fileName());
 255
 256         return true;
 257 }
 258
 259
 260 WorkArea & BufferView::Pimpl::workarea() const
 261 {
 262         return *workarea_.get();
 263 }
 264
 265
 266 LyXScreen & BufferView::Pimpl::screen() const
 267 {
 268         return *screen_.get();
 269 }
 270
 271
 272 Painter & BufferView::Pimpl::painter() const
 273 {
 274         return workarea().getPainter();
 275 }
 276
 277
 278 void BufferView::Pimpl::top_y(int y)
 279 {
 280         top_y_ = y;
 281 }
 282
 283
 284 int BufferView::Pimpl::top_y() const
 285 {
 286         return top_y_;
 287 }
 288
 289
 290 void BufferView::Pimpl::buffer(Buffer * b)
 291 {
 292         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 293                             << b << ')' << endl;
 294         if (buffer_) {
 295                 disconnectBuffer();
 296                 //delete bv_->text();
 297                 //bv_->setText(0);
 298         }
 299
 300         // reset old cursor
 301         cursor_.reset();
 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                 buffer_->text().init(bv_);
 321                 buffer_->text().textwidth_ = workarea().workWidth();
 322                 buffer_->text().fullRebreak();
 323
 324                 // If we don't have a text object for this, we make one
 325                 if (bv_->text() == 0)
 326                         resizeCurrentBuffer();
 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         // Don't forget to update the Layout
 345         if (buffer_)
 346                 owner_->setLayout(bv_->text()->getPar(0)->layout()->name());
 347
 348         if (lyx::graphics::Previews::activated() && buffer_)
 349                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 350 }
 351
 352
 353 bool BufferView::Pimpl::fitCursor()
 354 {
 355         if (screen().fitCursor(bv_)) {
 356                 updateScrollbar();
 357                 return true;
 358         }
 359         return false;
 360 }
 361
 362
 363 void BufferView::Pimpl::redoCurrentBuffer()
 364 {
 365         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 366         if (buffer_ && bv_->text()) {
 367                 resizeCurrentBuffer();
 368                 updateScrollbar();
 369                 owner_->updateLayoutChoice();
 370         }
 371 }
 372
 373
 374 void BufferView::Pimpl::resizeCurrentBuffer()
 375 {
 376         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 377
 378         int par = -1;
 379         int selstartpar = -1;
 380         int selendpar = -1;
 381
 382         pos_type pos = 0;
 383         pos_type selstartpos = 0;
 384         pos_type selendpos = 0;
 385         bool sel = false;
 386         bool mark_set  = false;
 387
 388         owner_->busy(true);
 389
 390         owner_->message(_("Formatting document..."));
 391
 392         LyXText * text = bv_->text();
 393         lyxerr << "### resizeCurrentBuffer: text " << text << endl;
 394         if (!text)
 395                 return;
 396
 397         LCursor & cur = bv_->cursor();
 398         par = cur.par();
 399         pos = cur.pos();
 400         selstartpar = cur.selBegin().par();
 401         selstartpos = cur.selBegin().pos();
 402         selendpar = cur.selEnd().par();
 403         selendpos = cur.selEnd().pos();
 404         sel = cur.selection();
 405         mark_set = cur.mark();
 406         text->textwidth_ = bv_->workWidth();
 407         text->fullRebreak();
 408         update();
 409
 410         if (par != -1) {
 411                 cur.selection() = true;
 412                 // At this point just to avoid the Delete-Empty-Paragraph-
 413                 // Mechanism when setting the cursor.
 414                 cur.mark() = mark_set;
 415                 if (sel) {
 416                         text->setCursor(selstartpar, selstartpos);
 417                         cur.resetAnchor();
 418                         text->setCursor(selendpar, selendpos);
 419                         cur.setSelection();
 420                         text->setCursor(par, pos);
 421                 } else {
 422                         text->setCursor(par, pos);
 423                         cur.resetAnchor();
 424                         cur.selection() = false;
 425                 }
 426         }
 427
 428         fitCursor();
 429
 430         switchKeyMap();
 431         owner_->busy(false);
 432
 433         // reset the "Formatting..." message
 434         owner_->clearMessage();
 435
 436         updateScrollbar();
 437 }
 438
 439
 440 void BufferView::Pimpl::updateScrollbar()
 441 {
 442         if (!bv_->text()) {
 443                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 444                 workarea().setScrollbarParams(0, 0, 0);
 445                 return;
 446         }
 447
 448         LyXText const & t = *bv_->text();
 449
 450         lyxerr[Debug::GUI] << "Updating scrollbar: h " << t.height << ", top_y() "
 451                 << top_y() << ", default height " << defaultRowHeight() << endl;
 452
 453         workarea().setScrollbarParams(t.height, top_y(), defaultRowHeight());
 454 }
 455
 456
 457 void BufferView::Pimpl::scrollDocView(int value)
 458 {
 459         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 460
 461         if (!buffer_)
 462                 return;
 463
 464         screen().hideCursor();
 465
 466         top_y(value);
 467         screen().redraw(*bv_);
 468
 469         if (!lyxrc.cursor_follows_scrollbar)
 470                 return;
 471
 472         int const height = defaultRowHeight();
 473         int const first = top_y() + height;
 474         int const last = top_y() + workarea().workHeight() - height;
 475
 476         LyXText * text = bv_->text();
 477         int y = text->cursorY(bv_->cursor().cursor_.front());
 478         if (y < first)
 479                 text->setCursorFromCoordinates(0, first);
 480         else if (y > last)
 481                 text->setCursorFromCoordinates(0, last);
 482
 483         owner_->updateLayoutChoice();
 484 }
 485
 486
 487 void BufferView::Pimpl::scroll(int lines)
 488 {
 489         if (!buffer_)
 490                 return;
 491
 492         LyXText const * t = bv_->text();
 493         int const line_height = defaultRowHeight();
 494
 495         // The new absolute coordinate
 496         int new_top_y = top_y() + lines * line_height;
 497
 498         // Restrict to a valid value
 499         new_top_y = std::min(t->height - 4 * line_height, new_top_y);
 500         new_top_y = std::max(0, new_top_y);
 501
 502         scrollDocView(new_top_y);
 503
 504         // Update the scrollbar.
 505         workarea().setScrollbarParams(t->height, top_y(), defaultRowHeight());
 506 }
 507
 508
 509 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 510                                          key_modifier::state state)
 511 {
 512         bv_->owner()->getLyXFunc().processKeySym(key, state);
 513
 514         /* This is perhaps a bit of a hack. When we move
 515          * around, or type, it's nice to be able to see
 516          * the cursor immediately after the keypress. So
 517          * we reset the toggle timeout and force the visibility
 518          * of the cursor. Note we cannot do this inside
 519          * dispatch() itself, because that's called recursively.
 520          */
 521         if (available()) {
 522                 cursor_timeout.restart();
 523                 screen().showCursor(*bv_);
 524         }
 525 }
 526
 527
 528 void BufferView::Pimpl::selectionRequested()
 529 {
 530         static string sel;
 531
 532         if (!available())
 533                 return;
 534
 535         LCursor & cur = bv_->cursor();
 536
 537         if (!cur.selection()) {
 538                 xsel_cache_.set = false;
 539                 return;
 540         }
 541
 542         if (!xsel_cache_.set ||
 543             cur.cursor_.back() != xsel_cache_.cursor ||
 544             cur.anchor_.back() != xsel_cache_.anchor)
 545         {
 546                 xsel_cache_.cursor = cur.cursor_.back();
 547                 xsel_cache_.anchor = cur.anchor_.back();
 548                 xsel_cache_.set = cur.selection();
 549                 sel = cur.selectionAsString(false);
 550                 if (!sel.empty())
 551                         workarea().putClipboard(sel);
 552         }
 553 }
 554
 555
 556 void BufferView::Pimpl::selectionLost()
 557 {
 558         if (available()) {
 559                 screen().hideCursor();
 560                 bv_->cursor().clearSelection();
 561                 xsel_cache_.set = false;
 562         }
 563 }
 564
 565
 566 void BufferView::Pimpl::workAreaResize()
 567 {
 568         static int work_area_width;
 569         static int work_area_height;
 570
 571         bool const widthChange = workarea().workWidth() != work_area_width;
 572         bool const heightChange = workarea().workHeight() != work_area_height;
 573
 574         // update from work area
 575         work_area_width = workarea().workWidth();
 576         work_area_height = workarea().workHeight();
 577
 578         if (buffer_ && widthChange) {
 579                 // The visible LyXView need a resize
 580                 resizeCurrentBuffer();
 581         }
 582
 583         if (widthChange || heightChange)
 584                 update();
 585
 586         // always make sure that the scrollbar is sane.
 587         updateScrollbar();
 588         owner_->updateLayoutChoice();
 589 }
 590
 591
 592 void BufferView::Pimpl::update()
 593 {
 594         //lyxerr << "BufferView::update()" << endl;
 595         // fix cursor coordinate cache in case something went wrong
 596
 597         // check needed to survive LyX startup
 598         if (bv_->getLyXText()) {
 599                 // update all 'visible' paragraphs
 600                 ParagraphList::iterator beg;
 601                 ParagraphList::iterator end;
 602                 getParsInRange(buffer_->paragraphs(),
 603                                top_y(), top_y() + workarea().workHeight(),
 604                                beg, end);
 605                 bv_->text()->redoParagraphs(beg, end);
 606                 updateScrollbar();
 607         }
 608         screen().redraw(*bv_);
 609 }
 610
 611
 612 // Callback for cursor timer
 613 void BufferView::Pimpl::cursorToggle()
 614 {
 615         if (!buffer_) {
 616                 cursor_timeout.restart();
 617                 return;
 618         }
 619
 620         screen().toggleCursor(*bv_);
 621         cursor_timeout.restart();
 622 }
 623
 624
 625 bool BufferView::Pimpl::available() const
 626 {
 627         return buffer_ && bv_->text();
 628 }
 629
 630
 631 Change const BufferView::Pimpl::getCurrentChange()
 632 {
 633         if (!bv_->buffer()->params().tracking_changes)
 634                 return Change(Change::UNCHANGED);
 635
 636         LyXText * text = bv_->getLyXText();
 637         LCursor & cur = bv_->cursor();
 638
 639         if (!cur.selection())
 640                 return Change(Change::UNCHANGED);
 641
 642         return text->getPar(cur.selBegin())
 643                 ->lookupChangeFull(cur.selBegin().pos());
 644 }
 645
 646
 647 void BufferView::Pimpl::savePosition(unsigned int i)
 648 {
 649         if (i >= saved_positions_num)
 650                 return;
 651         saved_positions[i] = Position(buffer_->fileName(),
 652                                       bv_->text()->cursorPar()->id(),
 653                                       bv_->text()->cursor().pos());
 654         if (i > 0)
 655                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 656 }
 657
 658
 659 void BufferView::Pimpl::restorePosition(unsigned int i)
 660 {
 661         if (i >= saved_positions_num)
 662                 return;
 663
 664         string const fname = saved_positions[i].filename;
 665
 666         bv_->cursor().clearSelection();
 667
 668         if (fname != buffer_->fileName()) {
 669                 Buffer * b = 0;
 670                 if (bufferlist.exists(fname))
 671                         b = bufferlist.getBuffer(fname);
 672                 else {
 673                         b = bufferlist.newBuffer(fname);
 674                         ::loadLyXFile(b, fname); // don't ask, just load it
 675                 }
 676                 if (b)
 677                         buffer(b);
 678         }
 679
 680         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 681         if (par == buffer_->par_iterator_end())
 682                 return;
 683
 684         bv_->text()->setCursor(bv_->text()->parOffset(par.pit()),
 685                              min(par->size(), saved_positions[i].par_pos));
 686
 687         if (i > 0)
 688                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 689 }
 690
 691
 692 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 693 {
 694         return i < saved_positions_num && !saved_positions[i].filename.empty();
 695 }
 696
 697
 698 void BufferView::Pimpl::switchKeyMap()
 699 {
 700         if (!lyxrc.rtl_support)
 701                 return;
 702
 703         Intl & intl = owner_->getIntl();
 704         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 705                 if (intl.keymap == Intl::PRIMARY)
 706                         intl.KeyMapSec();
 707         } else {
 708                 if (intl.keymap == Intl::SECONDARY)
 709                         intl.KeyMapPrim();
 710         }
 711 }
 712
 713
 714 void BufferView::Pimpl::center()
 715 {
 716         LyXText * text = bv_->text();
 717
 718         bv_->cursor().clearSelection();
 719         int const half_height = workarea().workHeight() / 2;
 720         int new_y = text->cursorY(bv_->cursor().cursor_.front()) - half_height;
 721         if (new_y < 0)
 722                 new_y = 0;
 723
 724         // FIXME: look at this comment again ...
 725         // This updates top_y() but means the fitCursor() call
 726         // from the update(FITCUR) doesn't realise that we might
 727         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 728         // the scrollbar to be updated as it should, so we have
 729         // to do it manually. Any operation that does a center()
 730         // and also might have moved top_y() must make sure to call
 731         // updateScrollbar() currently. Never mind that this is a
 732         // pretty obfuscated way of updating text->top_y()
 733         top_y(new_y);
 734 }
 735
 736
 737 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 738 {
 739         workarea().putClipboard(stuff);
 740 }
 741
 742
 743 InsetBase * BufferView::Pimpl::getInsetByCode(InsetBase::Code code)
 744 {
 745         // Ok, this is a little bit too brute force but it
 746         // should work for now. Better infrastructure is coming. (Lgb)
 747
 748         Buffer * b = bv_->buffer();
 749         LyXText * text = bv_->getLyXText();
 750
 751         Buffer::inset_iterator beg = b->inset_iterator_begin();
 752         Buffer::inset_iterator end = b->inset_iterator_end();
 753
 754         bool cursor_par_seen = false;
 755
 756         for (; beg != end; ++beg) {
 757                 if (beg.getPar() == text->cursorPar()) {
 758                         cursor_par_seen = true;
 759                 }
 760                 if (cursor_par_seen) {
 761                         if (beg.getPar() == text->cursorPar()
 762                             && beg.getPos() >= text->cursor().pos()) {
 763                                 break;
 764                         }
 765                         if (beg.getPar() != text->cursorPar()) {
 766                                 break;
 767                         }
 768                 }
 769
 770         }
 771         if (beg != end) {
 772                 // Now find the first inset that matches code.
 773                 for (; beg != end; ++beg) {
 774                         if (beg->lyxCode() == code)
 775                                 return &(*beg);
 776                 }
 777         }
 778         return 0;
 779 }
 780
 781
 782 void BufferView::Pimpl::MenuInsertLyXFile(string const & filenm)
 783 {
 784         string filename = filenm;
 785
 786         if (filename.empty()) {
 787                 // Launch a file browser
 788                 string initpath = lyxrc.document_path;
 789
 790                 if (available()) {
 791                         string const trypath = owner_->buffer()->filePath();
 792                         // If directory is writeable, use this as default.
 793                         if (IsDirWriteable(trypath))
 794                                 initpath = trypath;
 795                 }
 796
 797                 FileDialog fileDlg(_("Select LyX document to insert"),
 798                         LFUN_FILE_INSERT,
 799                         make_pair(string(_("Documents|#o#O")),
 800                                   string(lyxrc.document_path)),
 801                         make_pair(string(_("Examples|#E#e")),
 802                                   string(AddPath(system_lyxdir(), "examples"))));
 803
 804                 FileDialog::Result result =
 805                         fileDlg.open(initpath,
 806                                      FileFilterList(_("LyX Documents (*.lyx)")),
 807                                      string());
 808
 809                 if (result.first == FileDialog::Later)
 810                         return;
 811
 812                 filename = result.second;
 813
 814                 // check selected filename
 815                 if (filename.empty()) {
 816                         owner_->message(_("Canceled."));
 817                         return;
 818                 }
 819         }
 820
 821         // get absolute path of file and add ".lyx" to the filename if
 822         // necessary
 823         filename = FileSearch(string(), filename, "lyx");
 824
 825         string const disp_fn = MakeDisplayPath(filename);
 826         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 827         if (bv_->insertLyXFile(filename))
 828                 owner_->message(bformat(_("Document %1$s inserted."),
 829                                         disp_fn));
 830         else
 831                 owner_->message(bformat(_("Could not insert document %1$s"),
 832                                         disp_fn));
 833 }
 834
 835
 836 void BufferView::Pimpl::trackChanges()
 837 {
 838         Buffer * buf = bv_->buffer();
 839         bool const tracking(buf->params().tracking_changes);
 840
 841         if (!tracking) {
 842                 ParIterator const end = buf->par_iterator_end();
 843                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 844                         it->trackChanges();
 845                 buf->params().tracking_changes = true;
 846
 847                 // we cannot allow undos beyond the freeze point
 848                 buf->undostack().clear();
 849         } else {
 850                 update();
 851                 bv_->text()->setCursor(0, 0);
 852 #warning changes FIXME
 853                 bool found = lyx::find::findNextChange(bv_);
 854                 if (found) {
 855                         owner_->getDialogs().show("changes");
 856                         return;
 857                 }
 858
 859                 ParIterator const end = buf->par_iterator_end();
 860                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 861                         it->untrackChanges();
 862                 buf->params().tracking_changes = false;
 863         }
 864
 865         buf->redostack().clear();
 866 }
 867
 868
 869 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd0)
 870 {
 871         //
 872         // this is only called for mouse related events.
 873         //
 874         FuncRequest cmd = cmd0;
 875         cmd.y += bv_->top_y();
 876         //lyxerr << "*** workAreaDispatch: request: " << cmd << std::endl;
 877         LCursor cur(*bv_);
 878         cur.selection() = bv_->cursor().selection();
 879         switch (cmd.action) {
 880
 881 #if 0
 882         case LFUN_MOUSE_MOTION: {
 883                 if (!available())
 884                         return false;
 885                 FuncRequest cmd1 = cmd;
 886                 InsetBase * inset = cur.inset();
 887                 DispatchResult res;
 888                 if (inset) {
 889                         res = inset->dispatch(cur, cmd);
 890                 } else {
 891                         res = bv_->text()->dispatch(cur, cmd);
 892                 }
 893
 894                 if (fitCursor() || res.update()) {
 895                         update();
 896                         cur.updatePos();
 897                 }
 898                 return true;
 899         }
 900 #else
 901         case LFUN_MOUSE_MOTION:
 902 #endif
 903
 904         case LFUN_MOUSE_PRESS:
 905         case LFUN_MOUSE_RELEASE:
 906         case LFUN_MOUSE_DOUBLE:
 907         case LFUN_MOUSE_TRIPLE: {
 908                 // We pass those directly to the Bufferview, since
 909                 // otherwise selection handling breaks down
 910
 911                 // Doesn't go through lyxfunc, so we need to update
 912                 // the layout choice etc. ourselves
 913
 914                 // e.g. Qt mouse press when no buffer
 915                 if (!available())
 916                         return false;
 917
 918                 screen().hideCursor();
 919
 920                 // either the inset under the cursor or the
 921                 // surrounding LyXText will handle this event.
 922
 923                 // built temporary path to inset
 924                 LyXText * text = bv_->text();
 925                 InsetBase * const inset_hit = text->checkInsetHit(cmd.x, cmd.y);
 926                 if (inset_hit)
 927                         inset_hit->edit(cur, cmd.x, cmd.y);
 928                 else
 929                         text->setCursorFromCoordinates(cur.current(), cmd.x, cmd.y);
 930                 lyxerr << "created temp cursor: " << cur << endl;
 931
 932                 // Dispatch to the temp cursor.
 933                 // An inset (or LyXText) can assign this to bv->cursor()
 934                 // if it wishes to do so.
 935                 DispatchResult res = cur.dispatch(cmd);
 936
 937                 if (fitCursor() || res.update())
 938                         update();
 939
 940                 // see workAreaKeyPress
 941                 cursor_timeout.restart();
 942                 screen().showCursor(*bv_);
 943
 944                 // skip these when selecting
 945                 if (cmd.action != LFUN_MOUSE_MOTION) {
 946                         owner_->updateLayoutChoice();
 947                         owner_->updateToolbar();
 948                 }
 949
 950                 // slight hack: this is only called currently when we
 951                 // clicked somewhere, so we force through the display
 952                 // of the new status here.
 953                 owner_->clearMessage();
 954                 return true;
 955         }
 956
 957         default:
 958                 BOOST_ASSERT(false);
 959         }
 960         return true;
 961 }
 962
 963
 964 bool BufferView::Pimpl::dispatch(FuncRequest const & cmd)
 965 {
 966         //lyxerr << "*** BufferView::Pimpl: request: " << cmd << std::endl;
 967         // Make sure that the cached BufferView is correct.
 968         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
 969                 << " action[" << cmd.action << ']'
 970                 << " arg[" << cmd.argument << ']'
 971                 << " x[" << cmd.x << ']'
 972                 << " y[" << cmd.y << ']'
 973                 << " button[" << cmd.button() << ']'
 974                 << endl;
 975
 976         LCursor & cur = bv_->cursor();
 977
 978         switch (cmd.action) {
 979
 980         case LFUN_UNDO:
 981                 if (available()) {
 982                         cur.message(_("Undo"));
 983                         cur.clearSelection();
 984                         if (!textUndo(*bv_))
 985                                 cur.message(_("No further undo information"));
 986                         update();
 987                         switchKeyMap();
 988                 }
 989                 break;
 990
 991         case LFUN_REDO:
 992                 if (available()) {
 993                         cur.message(_("Redo"));
 994                         cur.clearSelection();
 995                         if (!textRedo(*bv_))
 996                                 cur.message(_("No further redo information"));
 997                         update();
 998                         switchKeyMap();
 999                 }
1000                 break;
1001
1002         case LFUN_FILE_INSERT:
1003                 MenuInsertLyXFile(cmd.argument);
1004                 break;
1005
1006         case LFUN_FILE_INSERT_ASCII_PARA:
1007                 InsertAsciiFile(bv_, cmd.argument, true);
1008                 break;
1009
1010         case LFUN_FILE_INSERT_ASCII:
1011                 InsertAsciiFile(bv_, cmd.argument, false);
1012                 break;
1013
1014         case LFUN_FONT_STATE:
1015                 cur.message(cur.currentState());
1016                 break;
1017
1018         case LFUN_INSERT_LABEL: {
1019                 // Try and generate a valid label
1020                 string const contents = cmd.argument.empty() ?
1021                         getPossibleLabel(*bv_) : cmd.argument;
1022                 InsetCommandParams icp("label", contents);
1023                 string data = InsetCommandMailer::params2string("label", icp);
1024                 owner_->getDialogs().show("label", data, 0);
1025                 break;
1026         }
1027
1028         case LFUN_BOOKMARK_SAVE:
1029                 savePosition(strToUnsignedInt(cmd.argument));
1030                 break;
1031
1032         case LFUN_BOOKMARK_GOTO:
1033                 restorePosition(strToUnsignedInt(cmd.argument));
1034                 break;
1035
1036         case LFUN_REF_GOTO: {
1037                 string label = cmd.argument;
1038                 if (label.empty()) {
1039                         InsetRef * inset =
1040                                 static_cast<InsetRef*>(getInsetByCode(InsetBase::REF_CODE));
1041                         if (inset) {
1042                                 label = inset->getContents();
1043                                 savePosition(0);
1044                         }
1045                 }
1046
1047                 if (!label.empty())
1048                         bv_->gotoLabel(label);
1049                 break;
1050         }
1051
1052         case LFUN_PARAGRAPH_APPLY:
1053                 setParagraphParams(*bv_, cmd.argument);
1054                 break;
1055
1056         case LFUN_TRACK_CHANGES:
1057                 trackChanges();
1058                 break;
1059
1060         case LFUN_MERGE_CHANGES:
1061                 owner_->getDialogs().show("changes");
1062                 break;
1063
1064         case LFUN_ACCEPT_ALL_CHANGES: {
1065                 bv_->cursor().reset();
1066 #warning FIXME changes
1067                 while (lyx::find::findNextChange(bv_))
1068                         bv_->getLyXText()->acceptChange(bv_->cursor());
1069                 update();
1070                 break;
1071         }
1072
1073         case LFUN_REJECT_ALL_CHANGES: {
1074                 bv_->cursor().reset();
1075 #warning FIXME changes
1076                 while (lyx::find::findNextChange(bv_))
1077                         bv_->getLyXText()->rejectChange(bv_->cursor());
1078                 update();
1079                 break;
1080         }
1081
1082         case LFUN_WORD_FIND:
1083                 lyx::find::find(bv_, cmd);
1084                 break;
1085
1086         case LFUN_WORD_REPLACE:
1087                 lyx::find::replace(bv_, cmd);
1088                 break;
1089
1090         case LFUN_MARK_OFF:
1091                 cur.clearSelection();
1092                 update();
1093                 cur.resetAnchor();
1094                 cur.message(N_("Mark off"));
1095                 break;
1096
1097         case LFUN_MARK_ON:
1098                 cur.clearSelection();
1099                 cur.mark() = true;
1100                 update();
1101                 cur.resetAnchor();
1102                 cur.message(N_("Mark on"));
1103                 break;
1104
1105         case LFUN_SETMARK:
1106                 cur.clearSelection();
1107                 if (cur.mark()) {
1108                         cur.message(N_("Mark removed"));
1109                 } else {
1110                         cur.mark() = true;
1111                         cur.message(N_("Mark set"));
1112                 }
1113                 cur.resetAnchor();
1114                 update();
1115                 break;
1116
1117         case LFUN_UNKNOWN_ACTION:
1118                 cur.errorMessage(N_("Unknown function!"));
1119                 break;
1120
1121         default:
1122                 return false;
1123         }
1124
1125         return true;
1126 }
1127
1128
1129 bool BufferView::Pimpl::ChangeInsets(InsetBase::Code code,
1130                                      string const & from, string const & to)
1131 {
1132         bool need_update = false;
1133         CursorSlice cur = bv_->text()->cursor();
1134
1135         ParIterator end = bv_->buffer()->par_iterator_end();
1136         for (ParIterator it = bv_->buffer()->par_iterator_begin();
1137              it != end; ++it) {
1138                 bool changed_inset = false;
1139                 for (InsetList::iterator it2 = it->insetlist.begin();
1140                      it2 != it->insetlist.end(); ++it2) {
1141                         if (it2->inset->lyxCode() == code) {
1142                                 InsetCommand * inset = static_cast<InsetCommand *>(it2->inset);
1143                                 if (inset->getContents() == from) {
1144                                         inset->setContents(to);
1145                                         changed_inset = true;
1146                                 }
1147                         }
1148                 }
1149                 if (changed_inset) {
1150                         need_update = true;
1151
1152                         // FIXME
1153
1154                         // The test it.size() == 1 was needed to prevent crashes.
1155                         // How to set the cursor correctly when it.size() > 1 ??
1156                         if (it.size() == 1) {
1157                                 bv_->text()->setCursorIntern(bv_->text()->parOffset(it.pit()), 0);
1158                                 bv_->text()->redoParagraph(bv_->text()->cursorPar());
1159                         }
1160                 }
1161         }
1162         bv_->text()->setCursorIntern(cur.par(), cur.pos());
1163         return need_update;
1164 }