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::istringstream;
  81 using std::make_pair;
  82 using std::min;
  83 using std::string;
  84
  85
  86 extern BufferList bufferlist;
  87
  88
  89 namespace {
  90
  91 unsigned int const saved_positions_num = 20;
  92
  93 // All the below connection objects are needed because of a bug in some
  94 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
  95 // to these connections we avoid a segfault upon startup, and also at exit.
  96 // (Lgb)
  97
  98 boost::signals::connection dispatchcon;
  99 boost::signals::connection timecon;
 100 boost::signals::connection doccon;
 101 boost::signals::connection resizecon;
 102 boost::signals::connection kpresscon;
 103 boost::signals::connection selectioncon;
 104 boost::signals::connection lostcon;
 105
 106
 107 } // anon namespace
 108
 109
 110 BufferView::Pimpl::Pimpl(BufferView & bv, LyXView * owner,
 111              int xpos, int ypos, int width, int height)
 112         : bv_(&bv), owner_(owner), buffer_(0), cursor_timeout(400),
 113           using_xterm_cursor(false), cursor_(bv)
 114 {
 115         xsel_cache_.set = false;
 116
 117         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 118         screen_.reset(LyXScreenFactory::create(workarea()));
 119
 120         // Setup the signals
 121         doccon = workarea().scrollDocView
 122                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 123         resizecon = workarea().workAreaResize
 124                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 125         dispatchcon = workarea().dispatch
 126                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 127         kpresscon = workarea().workAreaKeyPress
 128                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 129         selectioncon = workarea().selectionRequested
 130                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 131         lostcon = workarea().selectionLost
 132                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 133
 134         timecon = cursor_timeout.timeout
 135                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 136         cursor_timeout.start();
 137         saved_positions.resize(saved_positions_num);
 138 }
 139
 140
 141 void BufferView::Pimpl::addError(ErrorItem const & ei)
 142 {
 143         errorlist_.push_back(ei);
 144 }
 145
 146
 147 void BufferView::Pimpl::showReadonly(bool)
 148 {
 149         owner_->updateWindowTitle();
 150         owner_->getDialogs().updateBufferDependent(false);
 151 }
 152
 153
 154 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 155 {
 156         if (errorConnection_.connected())
 157                 disconnectBuffer();
 158
 159         errorConnection_ =
 160                 buf.error.connect(boost::bind(&BufferView::Pimpl::addError, this, _1));
 161         messageConnection_ =
 162                 buf.message.connect(boost::bind(&LyXView::message, owner_, _1));
 163         busyConnection_ =
 164                 buf.busy.connect(boost::bind(&LyXView::busy, owner_, _1));
 165         titleConnection_ =
 166                 buf.updateTitles.connect(boost::bind(&LyXView::updateWindowTitle, owner_));
 167         timerConnection_ =
 168                 buf.resetAutosaveTimers.connect(boost::bind(&LyXView::resetAutosaveTimer, owner_));
 169         readonlyConnection_ =
 170                 buf.readonly.connect(boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 171         closingConnection_ =
 172                 buf.closing.connect(boost::bind(&BufferView::Pimpl::buffer, this, (Buffer *)0));
 173 }
 174
 175
 176 void BufferView::Pimpl::disconnectBuffer()
 177 {
 178         errorConnection_.disconnect();
 179         messageConnection_.disconnect();
 180         busyConnection_.disconnect();
 181         titleConnection_.disconnect();
 182         timerConnection_.disconnect();
 183         readonlyConnection_.disconnect();
 184         closingConnection_.disconnect();
 185 }
 186
 187
 188 bool BufferView::Pimpl::newFile(string const & filename,
 189                                 string const & tname,
 190                                 bool isNamed)
 191 {
 192         Buffer * b = ::newFile(filename, tname, isNamed);
 193         buffer(b);
 194         return true;
 195 }
 196
 197
 198 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 199 {
 200         // get absolute path of file and add ".lyx" to the filename if
 201         // necessary
 202         string s = FileSearch(string(), filename, "lyx");
 203
 204         bool const found = !s.empty();
 205
 206         if (!found)
 207                 s = filename;
 208
 209         // file already open?
 210         if (bufferlist.exists(s)) {
 211                 string const file = MakeDisplayPath(s, 20);
 212                 string text = bformat(_("The document %1$s is already "
 213                                         "loaded.\n\nDo you want to revert "
 214                                         "to the saved version?"), file);
 215                 int const ret = Alert::prompt(_("Revert to saved document?"),
 216                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 217
 218                 if (ret != 0) {
 219                         buffer(bufferlist.getBuffer(s));
 220                         return true;
 221                 } else {
 222                         // FIXME: should be LFUN_REVERT
 223                         if (!bufferlist.close(bufferlist.getBuffer(s), false))
 224                                 return false;
 225                         // Fall through to new load. (Asger)
 226                 }
 227         }
 228
 229         Buffer * b;
 230
 231         if (found) {
 232                 b = bufferlist.newBuffer(s);
 233                 connectBuffer(*b);
 234                 if (!::loadLyXFile(b, s)) {
 235                         bufferlist.release(b);
 236                         return false;
 237                 }
 238         } else {
 239                 string text = bformat(_("The document %1$s does not yet "
 240                                         "exist.\n\nDo you want to create "
 241                                         "a new document?"), s);
 242                 int const ret = Alert::prompt(_("Create new document?"),
 243                          text, 0, 1, _("&Create"), _("Cancel"));
 244
 245                 if (ret == 0)
 246                         b = ::newFile(s, string(), true);
 247                 else
 248                         return false;
 249         }
 250
 251         buffer(b);
 252         bv_->showErrorList(_("Parse"));
 253
 254         if (tolastfiles)
 255                 LyX::ref().lastfiles().newFile(b->fileName());
 256
 257         return true;
 258 }
 259
 260
 261 WorkArea & BufferView::Pimpl::workarea() const
 262 {
 263         return *workarea_.get();
 264 }
 265
 266
 267 LyXScreen & BufferView::Pimpl::screen() const
 268 {
 269         return *screen_.get();
 270 }
 271
 272
 273 Painter & BufferView::Pimpl::painter() const
 274 {
 275         return workarea().getPainter();
 276 }
 277
 278
 279 void BufferView::Pimpl::top_y(int y)
 280 {
 281         top_y_ = y;
 282 }
 283
 284
 285 int BufferView::Pimpl::top_y() const
 286 {
 287         return top_y_;
 288 }
 289
 290
 291 void BufferView::Pimpl::buffer(Buffer * b)
 292 {
 293         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 294                             << b << ')' << endl;
 295         if (buffer_) {
 296                 disconnectBuffer();
 297                 //delete bv_->text();
 298                 //bv_->setText(0);
 299         }
 300
 301         // reset old cursor
 302         cursor_.reset();
 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                 buffer_->text().init(bv_);
 322                 buffer_->text().textwidth_ = workarea().workWidth();
 323                 buffer_->text().fullRebreak();
 324
 325                 // If we don't have a text object for this, we make one
 326                 if (bv_->text() == 0)
 327                         resizeCurrentBuffer();
 328
 329                 // Buffer-dependent dialogs should be updated or
 330                 // hidden. This should go here because some dialogs (eg ToC)
 331                 // require bv_->text.
 332                 owner_->getDialogs().updateBufferDependent(true);
 333         } else {
 334                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 335                 owner_->getDialogs().hideBufferDependent();
 336         }
 337
 338         update();
 339         updateScrollbar();
 340         owner_->updateMenubar();
 341         owner_->updateToolbar();
 342         owner_->updateLayoutChoice();
 343         owner_->updateWindowTitle();
 344
 345         // Don't forget to update the Layout
 346         if (buffer_)
 347                 owner_->setLayout(bv_->text()->getPar(0)->layout()->name());
 348
 349         if (lyx::graphics::Previews::activated() && buffer_)
 350                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 351 }
 352
 353
 354 bool BufferView::Pimpl::fitCursor()
 355 {
 356         if (screen().fitCursor(bv_)) {
 357                 updateScrollbar();
 358                 return true;
 359         }
 360         return false;
 361 }
 362
 363
 364 void BufferView::Pimpl::redoCurrentBuffer()
 365 {
 366         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 367         if (buffer_ && bv_->text()) {
 368                 resizeCurrentBuffer();
 369                 updateScrollbar();
 370                 owner_->updateLayoutChoice();
 371         }
 372 }
 373
 374
 375 void BufferView::Pimpl::resizeCurrentBuffer()
 376 {
 377         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 378
 379         int par = -1;
 380         int selstartpar = -1;
 381         int selendpar = -1;
 382
 383         pos_type pos = 0;
 384         pos_type selstartpos = 0;
 385         pos_type selendpos = 0;
 386         bool sel = false;
 387         bool mark_set  = false;
 388
 389         owner_->busy(true);
 390
 391         owner_->message(_("Formatting document..."));
 392
 393         LyXText * text = bv_->text();
 394         lyxerr << "### resizeCurrentBuffer: text " << text << endl;
 395         if (!text)
 396                 return;
 397
 398         LCursor & cur = bv_->cursor();
 399         par = cur.par();
 400         pos = cur.pos();
 401         selstartpar = cur.selBegin().par();
 402         selstartpos = cur.selBegin().pos();
 403         selendpar = cur.selEnd().par();
 404         selendpos = cur.selEnd().pos();
 405         sel = cur.selection();
 406         mark_set = cur.mark();
 407         text->textwidth_ = bv_->workWidth();
 408         text->fullRebreak();
 409         update();
 410
 411         if (par != -1) {
 412                 cur.selection() = true;
 413                 // At this point just to avoid the Delete-Empty-Paragraph-
 414                 // Mechanism when setting the cursor.
 415                 cur.mark() = mark_set;
 416                 if (sel) {
 417                         text->setCursor(cur, selstartpar, selstartpos);
 418                         cur.resetAnchor();
 419                         text->setCursor(cur, selendpar, selendpos);
 420                         cur.setSelection();
 421                         text->setCursor(cur, par, pos);
 422                 } else {
 423                         text->setCursor(cur, par, pos);
 424                         cur.resetAnchor();
 425                         cur.selection() = false;
 426                 }
 427         }
 428
 429         fitCursor();
 430
 431         switchKeyMap();
 432         owner_->busy(false);
 433
 434         // reset the "Formatting..." message
 435         owner_->clearMessage();
 436
 437         updateScrollbar();
 438 }
 439
 440
 441 void BufferView::Pimpl::updateScrollbar()
 442 {
 443         if (!bv_->text()) {
 444                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 445                 workarea().setScrollbarParams(0, 0, 0);
 446                 return;
 447         }
 448
 449         LyXText const & t = *bv_->text();
 450
 451         lyxerr[Debug::GUI] << "Updating scrollbar: h " << t.height << ", top_y() "
 452                 << top_y() << ", default height " << defaultRowHeight() << endl;
 453
 454         workarea().setScrollbarParams(t.height, top_y(), defaultRowHeight());
 455 }
 456
 457
 458 void BufferView::Pimpl::scrollDocView(int value)
 459 {
 460         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 461
 462         if (!buffer_)
 463                 return;
 464
 465         screen().hideCursor();
 466
 467         top_y(value);
 468         screen().redraw(*bv_);
 469
 470         if (!lyxrc.cursor_follows_scrollbar)
 471                 return;
 472
 473         int const height = defaultRowHeight();
 474         int const first = top_y() + height;
 475         int const last = top_y() + workarea().workHeight() - height;
 476
 477         LyXText * text = bv_->text();
 478         CursorSlice & cur = bv_->cursor().cursor_.front();
 479         int y = text->cursorY(cur);
 480         if (y < first)
 481                 text->setCursorFromCoordinates(cur, 0, first);
 482         else if (y > last)
 483                 text->setCursorFromCoordinates(cur, 0, last);
 484
 485         owner_->updateLayoutChoice();
 486 }
 487
 488
 489 void BufferView::Pimpl::scroll(int lines)
 490 {
 491         if (!buffer_)
 492                 return;
 493
 494         LyXText const * t = bv_->text();
 495         int const line_height = defaultRowHeight();
 496
 497         // The new absolute coordinate
 498         int new_top_y = top_y() + lines * line_height;
 499
 500         // Restrict to a valid value
 501         new_top_y = std::min(t->height - 4 * line_height, new_top_y);
 502         new_top_y = std::max(0, new_top_y);
 503
 504         scrollDocView(new_top_y);
 505
 506         // Update the scrollbar.
 507         workarea().setScrollbarParams(t->height, top_y(), defaultRowHeight());
 508 }
 509
 510
 511 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 512                                          key_modifier::state state)
 513 {
 514         bv_->owner()->getLyXFunc().processKeySym(key, state);
 515
 516         /* This is perhaps a bit of a hack. When we move
 517          * around, or type, it's nice to be able to see
 518          * the cursor immediately after the keypress. So
 519          * we reset the toggle timeout and force the visibility
 520          * of the cursor. Note we cannot do this inside
 521          * dispatch() itself, because that's called recursively.
 522          */
 523         if (available()) {
 524                 cursor_timeout.restart();
 525                 screen().showCursor(*bv_);
 526         }
 527 }
 528
 529
 530 void BufferView::Pimpl::selectionRequested()
 531 {
 532         static string sel;
 533
 534         if (!available())
 535                 return;
 536
 537         LCursor & cur = bv_->cursor();
 538
 539         if (!cur.selection()) {
 540                 xsel_cache_.set = false;
 541                 return;
 542         }
 543
 544         if (!xsel_cache_.set ||
 545             cur.cursor_.back() != xsel_cache_.cursor ||
 546             cur.anchor_.back() != xsel_cache_.anchor)
 547         {
 548                 xsel_cache_.cursor = cur.cursor_.back();
 549                 xsel_cache_.anchor = cur.anchor_.back();
 550                 xsel_cache_.set = cur.selection();
 551                 sel = cur.selectionAsString(false);
 552                 if (!sel.empty())
 553                         workarea().putClipboard(sel);
 554         }
 555 }
 556
 557
 558 void BufferView::Pimpl::selectionLost()
 559 {
 560         if (available()) {
 561                 screen().hideCursor();
 562                 bv_->cursor().clearSelection();
 563                 xsel_cache_.set = false;
 564         }
 565 }
 566
 567
 568 void BufferView::Pimpl::workAreaResize()
 569 {
 570         static int work_area_width;
 571         static int work_area_height;
 572
 573         bool const widthChange = workarea().workWidth() != work_area_width;
 574         bool const heightChange = workarea().workHeight() != work_area_height;
 575
 576         // update from work area
 577         work_area_width = workarea().workWidth();
 578         work_area_height = workarea().workHeight();
 579
 580         if (buffer_ && widthChange) {
 581                 // The visible LyXView need a resize
 582                 resizeCurrentBuffer();
 583         }
 584
 585         if (widthChange || heightChange)
 586                 update();
 587
 588         // always make sure that the scrollbar is sane.
 589         updateScrollbar();
 590         owner_->updateLayoutChoice();
 591 }
 592
 593
 594 void BufferView::Pimpl::update()
 595 {
 596         //lyxerr << "BufferView::update()" << endl;
 597         // fix cursor coordinate cache in case something went wrong
 598
 599         // check needed to survive LyX startup
 600         if (bv_->getLyXText()) {
 601                 // update all 'visible' paragraphs
 602                 ParagraphList::iterator beg;
 603                 ParagraphList::iterator end;
 604                 getParsInRange(buffer_->paragraphs(),
 605                                top_y(), top_y() + workarea().workHeight(),
 606                                beg, end);
 607                 bv_->text()->redoParagraphs(beg, end);
 608                 updateScrollbar();
 609         }
 610         screen().redraw(*bv_);
 611 }
 612
 613
 614 // Callback for cursor timer
 615 void BufferView::Pimpl::cursorToggle()
 616 {
 617         if (!buffer_) {
 618                 cursor_timeout.restart();
 619                 return;
 620         }
 621
 622         screen().toggleCursor(*bv_);
 623         cursor_timeout.restart();
 624 }
 625
 626
 627 bool BufferView::Pimpl::available() const
 628 {
 629         return buffer_ && bv_->text();
 630 }
 631
 632
 633 Change const BufferView::Pimpl::getCurrentChange()
 634 {
 635         if (!bv_->buffer()->params().tracking_changes)
 636                 return Change(Change::UNCHANGED);
 637
 638         LyXText * text = bv_->getLyXText();
 639         LCursor & cur = bv_->cursor();
 640
 641         if (!cur.selection())
 642                 return Change(Change::UNCHANGED);
 643
 644         return text->getPar(cur.selBegin())
 645                 ->lookupChangeFull(cur.selBegin().pos());
 646 }
 647
 648
 649 void BufferView::Pimpl::savePosition(unsigned int i)
 650 {
 651         if (i >= saved_positions_num)
 652                 return;
 653         saved_positions[i] = Position(buffer_->fileName(),
 654                                       bv_->text()->cursorPar()->id(),
 655                                       bv_->text()->cursor().pos());
 656         if (i > 0)
 657                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 658 }
 659
 660
 661 void BufferView::Pimpl::restorePosition(unsigned int i)
 662 {
 663         if (i >= saved_positions_num)
 664                 return;
 665
 666         string const fname = saved_positions[i].filename;
 667
 668         bv_->cursor().clearSelection();
 669
 670         if (fname != buffer_->fileName()) {
 671                 Buffer * b = 0;
 672                 if (bufferlist.exists(fname))
 673                         b = bufferlist.getBuffer(fname);
 674                 else {
 675                         b = bufferlist.newBuffer(fname);
 676                         ::loadLyXFile(b, fname); // don't ask, just load it
 677                 }
 678                 if (b)
 679                         buffer(b);
 680         }
 681
 682         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 683         if (par == buffer_->par_iterator_end())
 684                 return;
 685
 686         bv_->text()->setCursor(
 687                 bv_->cursor(),
 688                 bv_->text()->parOffset(par.pit()),
 689                 min(par->size(), saved_positions[i].par_pos));
 690
 691         if (i > 0)
 692                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 693 }
 694
 695
 696 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 697 {
 698         return i < saved_positions_num && !saved_positions[i].filename.empty();
 699 }
 700
 701
 702 void BufferView::Pimpl::switchKeyMap()
 703 {
 704         if (!lyxrc.rtl_support)
 705                 return;
 706
 707         Intl & intl = owner_->getIntl();
 708         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 709                 if (intl.keymap == Intl::PRIMARY)
 710                         intl.KeyMapSec();
 711         } else {
 712                 if (intl.keymap == Intl::SECONDARY)
 713                         intl.KeyMapPrim();
 714         }
 715 }
 716
 717
 718 void BufferView::Pimpl::center()
 719 {
 720         LyXText * text = bv_->text();
 721
 722         bv_->cursor().clearSelection();
 723         int const half_height = workarea().workHeight() / 2;
 724         int new_y = text->cursorY(bv_->cursor().cursor_.front()) - half_height;
 725         if (new_y < 0)
 726                 new_y = 0;
 727
 728         // FIXME: look at this comment again ...
 729         // This updates top_y() but means the fitCursor() call
 730         // from the update(FITCUR) doesn't realise that we might
 731         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 732         // the scrollbar to be updated as it should, so we have
 733         // to do it manually. Any operation that does a center()
 734         // and also might have moved top_y() must make sure to call
 735         // updateScrollbar() currently. Never mind that this is a
 736         // pretty obfuscated way of updating text->top_y()
 737         top_y(new_y);
 738 }
 739
 740
 741 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 742 {
 743         workarea().putClipboard(stuff);
 744 }
 745
 746
 747 InsetBase * BufferView::Pimpl::getInsetByCode(InsetBase::Code code)
 748 {
 749 #warning Does not work for mathed
 750         // Ok, this is a little bit too brute force but it
 751         // should work for now. Better infrastructure is coming. (Lgb)
 752
 753         Buffer * buf = bv_->buffer();
 754         Buffer::inset_iterator beg = buf->inset_iterator_begin();
 755         Buffer::inset_iterator end = buf->inset_iterator_end();
 756
 757         bool cursor_par_seen = false;
 758
 759         LCursor & cur = bv_->cursor();
 760         ParagraphList::iterator pit =  bv_->getLyXText()->getPar(cur.par());
 761
 762         for (; beg != end; ++beg) {
 763                 if (beg.getPar() == pit)
 764                         cursor_par_seen = true;
 765                 if (cursor_par_seen) {
 766                         if (beg.getPar() == pit && beg.getPos() >= cur.pos())
 767                                 break;
 768                         if (beg.getPar() != pit)
 769                                 break;
 770                 }
 771         }
 772         if (beg != end) {
 773                 // Now find the first inset that matches code.
 774                 for (; beg != end; ++beg) {
 775                         if (beg->lyxCode() == code)
 776                                 return &(*beg);
 777                 }
 778         }
 779         return 0;
 780 }
 781
 782
 783 void BufferView::Pimpl::MenuInsertLyXFile(string const & filenm)
 784 {
 785         string filename = filenm;
 786
 787         if (filename.empty()) {
 788                 // Launch a file browser
 789                 string initpath = lyxrc.document_path;
 790
 791                 if (available()) {
 792                         string const trypath = owner_->buffer()->filePath();
 793                         // If directory is writeable, use this as default.
 794                         if (IsDirWriteable(trypath))
 795                                 initpath = trypath;
 796                 }
 797
 798                 FileDialog fileDlg(_("Select LyX document to insert"),
 799                         LFUN_FILE_INSERT,
 800                         make_pair(string(_("Documents|#o#O")),
 801                                   string(lyxrc.document_path)),
 802                         make_pair(string(_("Examples|#E#e")),
 803                                   string(AddPath(system_lyxdir(), "examples"))));
 804
 805                 FileDialog::Result result =
 806                         fileDlg.open(initpath,
 807                                      FileFilterList(_("LyX Documents (*.lyx)")),
 808                                      string());
 809
 810                 if (result.first == FileDialog::Later)
 811                         return;
 812
 813                 filename = result.second;
 814
 815                 // check selected filename
 816                 if (filename.empty()) {
 817                         owner_->message(_("Canceled."));
 818                         return;
 819                 }
 820         }
 821
 822         // get absolute path of file and add ".lyx" to the filename if
 823         // necessary
 824         filename = FileSearch(string(), filename, "lyx");
 825
 826         string const disp_fn = MakeDisplayPath(filename);
 827         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 828         if (bv_->insertLyXFile(filename))
 829                 owner_->message(bformat(_("Document %1$s inserted."),
 830                                         disp_fn));
 831         else
 832                 owner_->message(bformat(_("Could not insert document %1$s"),
 833                                         disp_fn));
 834 }
 835
 836
 837 void BufferView::Pimpl::trackChanges()
 838 {
 839         Buffer * buf = bv_->buffer();
 840         bool const tracking = buf->params().tracking_changes;
 841
 842         if (!tracking) {
 843                 ParIterator const end = buf->par_iterator_end();
 844                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 845                         it->trackChanges();
 846                 buf->params().tracking_changes = true;
 847
 848                 // we cannot allow undos beyond the freeze point
 849                 buf->undostack().clear();
 850         } else {
 851                 update();
 852                 bv_->text()->setCursor(bv_->cursor(), 0, 0);
 853 #warning changes FIXME
 854                 bool found = lyx::find::findNextChange(bv_);
 855                 if (found) {
 856                         owner_->getDialogs().show("changes");
 857                         return;
 858                 }
 859
 860                 ParIterator const end = buf->par_iterator_end();
 861                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 862                         it->untrackChanges();
 863                 buf->params().tracking_changes = false;
 864         }
 865
 866         buf->redostack().clear();
 867 }
 868
 869
 870 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd0)
 871 {
 872         //
 873         // this is only called for mouse related events.
 874         //
 875         FuncRequest cmd = cmd0;
 876         cmd.y += bv_->top_y();
 877         //lyxerr << "*** workAreaDispatch: request: " << cmd << std::endl;
 878         LCursor cur(*bv_);
 879         cur.selection() = bv_->cursor().selection();
 880         switch (cmd.action) {
 881
 882 #if 0
 883         case LFUN_MOUSE_MOTION: {
 884                 if (!available())
 885                         return false;
 886                 FuncRequest cmd1 = cmd;
 887                 InsetBase * inset = cur.inset();
 888                 DispatchResult res;
 889                 if (inset) {
 890                         res = inset->dispatch(cur, cmd);
 891                 } else {
 892                         res = bv_->text()->dispatch(cur, cmd);
 893                 }
 894
 895                 if (fitCursor() || res.update()) {
 896                         update();
 897                         cur.updatePos();
 898                 }
 899                 return true;
 900         }
 901 #else
 902         case LFUN_MOUSE_MOTION:
 903 #endif
 904
 905         case LFUN_MOUSE_PRESS:
 906         case LFUN_MOUSE_RELEASE:
 907         case LFUN_MOUSE_DOUBLE:
 908         case LFUN_MOUSE_TRIPLE: {
 909                 // We pass those directly to the Bufferview, since
 910                 // otherwise selection handling breaks down
 911
 912                 // Doesn't go through lyxfunc, so we need to update
 913                 // the layout choice etc. ourselves
 914
 915                 // e.g. Qt mouse press when no buffer
 916                 if (!available())
 917                         return false;
 918
 919                 screen().hideCursor();
 920
 921                 // either the inset under the cursor or the
 922                 // surrounding LyXText will handle this event.
 923
 924                 // built temporary path to inset
 925                 LyXText * text = bv_->text();
 926                 InsetBase * const inset_hit = text->checkInsetHit(cmd.x, cmd.y);
 927                 if (inset_hit)
 928                         inset_hit->edit(cur, cmd.x, cmd.y);
 929                 else
 930                         text->setCursorFromCoordinates(cur.current(), cmd.x, cmd.y);
 931                 lyxerr << "created temp cursor: " << cur << endl;
 932
 933                 // Try to dispatch to an non-editable inset near this position
 934                 DispatchResult res;
 935                 InsetBase * inset = cur.nextInset();
 936                 lyxerr << "next inset: " << inset << endl;
 937                 if (inset)
 938                         res = inset->dispatch(cur, cmd);
 939
 940                 // Dispatch to the temp cursor.
 941                 // An inset (or LyXText) can assign this to bv->cursor()
 942                 // if it wishes to do so.
 943                 if (!res.dispatched())
 944                         res = cur.dispatch(cmd);
 945
 946                 if (fitCursor() || res.update())
 947                         update();
 948
 949                 // see workAreaKeyPress
 950                 cursor_timeout.restart();
 951                 screen().showCursor(*bv_);
 952
 953                 // skip these when selecting
 954                 if (cmd.action != LFUN_MOUSE_MOTION) {
 955                         owner_->updateLayoutChoice();
 956                         owner_->updateToolbar();
 957                 }
 958
 959                 // slight hack: this is only called currently when we
 960                 // clicked somewhere, so we force through the display
 961                 // of the new status here.
 962                 owner_->clearMessage();
 963                 return true;
 964         }
 965
 966         default:
 967                 BOOST_ASSERT(false);
 968         }
 969         return true;
 970 }
 971
 972
 973 bool BufferView::Pimpl::dispatch(FuncRequest const & cmd)
 974 {
 975         //lyxerr << "*** BufferView::Pimpl: request: " << cmd << std::endl;
 976         // Make sure that the cached BufferView is correct.
 977         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
 978                 << " action[" << cmd.action << ']'
 979                 << " arg[" << cmd.argument << ']'
 980                 << " x[" << cmd.x << ']'
 981                 << " y[" << cmd.y << ']'
 982                 << " button[" << cmd.button() << ']'
 983                 << endl;
 984
 985         LCursor & cur = bv_->cursor();
 986
 987         switch (cmd.action) {
 988
 989         case LFUN_UNDO:
 990                 if (available()) {
 991                         cur.message(_("Undo"));
 992                         cur.clearSelection();
 993                         if (!textUndo(*bv_))
 994                                 cur.message(_("No further undo information"));
 995                         update();
 996                         switchKeyMap();
 997                 }
 998                 break;
 999
1000         case LFUN_REDO:
1001                 if (available()) {
1002                         cur.message(_("Redo"));
1003                         cur.clearSelection();
1004                         if (!textRedo(*bv_))
1005                                 cur.message(_("No further redo information"));
1006                         update();
1007                         switchKeyMap();
1008                 }
1009                 break;
1010
1011         case LFUN_FILE_INSERT:
1012                 MenuInsertLyXFile(cmd.argument);
1013                 break;
1014
1015         case LFUN_FILE_INSERT_ASCII_PARA:
1016                 InsertAsciiFile(bv_, cmd.argument, true);
1017                 break;
1018
1019         case LFUN_FILE_INSERT_ASCII:
1020                 InsertAsciiFile(bv_, cmd.argument, false);
1021                 break;
1022
1023         case LFUN_FONT_STATE:
1024                 cur.message(cur.currentState());
1025                 break;
1026
1027         case LFUN_INSERT_LABEL: {
1028                 // Try and generate a valid label
1029                 string const contents = cmd.argument.empty() ?
1030                         getPossibleLabel(*bv_) : cmd.argument;
1031                 InsetCommandParams icp("label", contents);
1032                 string data = InsetCommandMailer::params2string("label", icp);
1033                 owner_->getDialogs().show("label", data, 0);
1034                 break;
1035         }
1036
1037         case LFUN_BOOKMARK_SAVE:
1038                 savePosition(strToUnsignedInt(cmd.argument));
1039                 break;
1040
1041         case LFUN_BOOKMARK_GOTO:
1042                 restorePosition(strToUnsignedInt(cmd.argument));
1043                 break;
1044
1045         case LFUN_REF_GOTO: {
1046                 string label = cmd.argument;
1047                 if (label.empty()) {
1048                         InsetRef * inset =
1049                                 static_cast<InsetRef*>(getInsetByCode(InsetBase::REF_CODE));
1050                         if (inset) {
1051                                 label = inset->getContents();
1052                                 savePosition(0);
1053                         }
1054                 }
1055
1056                 if (!label.empty())
1057                         bv_->gotoLabel(label);
1058                 break;
1059         }
1060
1061         case LFUN_TRACK_CHANGES:
1062                 trackChanges();
1063                 break;
1064
1065         case LFUN_MERGE_CHANGES:
1066                 owner_->getDialogs().show("changes");
1067                 break;
1068
1069         case LFUN_ACCEPT_ALL_CHANGES: {
1070                 bv_->cursor().reset();
1071 #warning FIXME changes
1072                 while (lyx::find::findNextChange(bv_))
1073                         bv_->getLyXText()->acceptChange(bv_->cursor());
1074                 update();
1075                 break;
1076         }
1077
1078         case LFUN_REJECT_ALL_CHANGES: {
1079                 bv_->cursor().reset();
1080 #warning FIXME changes
1081                 while (lyx::find::findNextChange(bv_))
1082                         bv_->getLyXText()->rejectChange(bv_->cursor());
1083                 update();
1084                 break;
1085         }
1086
1087         case LFUN_WORD_FIND:
1088                 lyx::find::find(bv_, cmd);
1089                 break;
1090
1091         case LFUN_WORD_REPLACE:
1092                 lyx::find::replace(bv_, cmd);
1093                 break;
1094
1095         case LFUN_MARK_OFF:
1096                 cur.clearSelection();
1097                 update();
1098                 cur.resetAnchor();
1099                 cur.message(N_("Mark off"));
1100                 break;
1101
1102         case LFUN_MARK_ON:
1103                 cur.clearSelection();
1104                 cur.mark() = true;
1105                 update();
1106                 cur.resetAnchor();
1107                 cur.message(N_("Mark on"));
1108                 break;
1109
1110         case LFUN_SETMARK:
1111                 cur.clearSelection();
1112                 if (cur.mark()) {
1113                         cur.message(N_("Mark removed"));
1114                 } else {
1115                         cur.mark() = true;
1116                         cur.message(N_("Mark set"));
1117                 }
1118                 cur.resetAnchor();
1119                 update();
1120                 break;
1121
1122         case LFUN_UNKNOWN_ACTION:
1123                 cur.errorMessage(N_("Unknown function!"));
1124                 break;
1125
1126         default:
1127                 return false;
1128         }
1129
1130         return true;
1131 }