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 #include "insets/insettext.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 "support/filetools.h"
  63 #include "support/globbing.h"
  64 #include "support/path_defines.h"
  65 #include "support/tostr.h"
  66
  67 #include <boost/bind.hpp>
  68
  69 using lyx::pos_type;
  70
  71 using lyx::support::AddPath;
  72 using lyx::support::bformat;
  73 using lyx::support::FileFilterList;
  74 using lyx::support::FileSearch;
  75 using lyx::support::IsDirWriteable;
  76 using lyx::support::MakeDisplayPath;
  77 using lyx::support::strToUnsignedInt;
  78 using lyx::support::system_lyxdir;
  79
  80 using std::endl;
  81 using std::istringstream;
  82 using std::make_pair;
  83 using std::min;
  84 using std::string;
  85
  86
  87 extern BufferList bufferlist;
  88
  89
  90 namespace {
  91
  92 unsigned int const saved_positions_num = 20;
  93
  94 // All the below connection objects are needed because of a bug in some
  95 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
  96 // to these connections we avoid a segfault upon startup, and also at exit.
  97 // (Lgb)
  98
  99 boost::signals::connection dispatchcon;
 100 boost::signals::connection timecon;
 101 boost::signals::connection doccon;
 102 boost::signals::connection resizecon;
 103 boost::signals::connection kpresscon;
 104 boost::signals::connection selectioncon;
 105 boost::signals::connection lostcon;
 106
 107
 108 } // anon namespace
 109
 110
 111 BufferView::Pimpl::Pimpl(BufferView & bv, LyXView * owner,
 112              int xpos, int ypos, int width, int height)
 113         : bv_(&bv), owner_(owner), buffer_(0), cursor_timeout(400),
 114           using_xterm_cursor(false), cursor_(bv)
 115 {
 116         xsel_cache_.set = false;
 117
 118         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 119         screen_.reset(LyXScreenFactory::create(workarea()));
 120
 121         // Setup the signals
 122         doccon = workarea().scrollDocView
 123                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 124         resizecon = workarea().workAreaResize
 125                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 126         dispatchcon = workarea().dispatch
 127                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 128         kpresscon = workarea().workAreaKeyPress
 129                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 130         selectioncon = workarea().selectionRequested
 131                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 132         lostcon = workarea().selectionLost
 133                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 134
 135         timecon = cursor_timeout.timeout
 136                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 137         cursor_timeout.start();
 138         saved_positions.resize(saved_positions_num);
 139 }
 140
 141
 142 void BufferView::Pimpl::addError(ErrorItem const & ei)
 143 {
 144         errorlist_.push_back(ei);
 145 }
 146
 147
 148 void BufferView::Pimpl::showReadonly(bool)
 149 {
 150         owner_->updateWindowTitle();
 151         owner_->getDialogs().updateBufferDependent(false);
 152 }
 153
 154
 155 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 156 {
 157         if (errorConnection_.connected())
 158                 disconnectBuffer();
 159
 160         errorConnection_ =
 161                 buf.error.connect(
 162                         boost::bind(&BufferView::Pimpl::addError, this, _1));
 163
 164         messageConnection_ =
 165                 buf.message.connect(
 166                         boost::bind(&LyXView::message, owner_, _1));
 167
 168         busyConnection_ =
 169                 buf.busy.connect(
 170                         boost::bind(&LyXView::busy, owner_, _1));
 171
 172         titleConnection_ =
 173                 buf.updateTitles.connect(
 174                         boost::bind(&LyXView::updateWindowTitle, owner_));
 175
 176         timerConnection_ =
 177                 buf.resetAutosaveTimers.connect(
 178                         boost::bind(&LyXView::resetAutosaveTimer, owner_));
 179
 180         readonlyConnection_ =
 181                 buf.readonly.connect(
 182                         boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 183
 184         closingConnection_ =
 185                 buf.closing.connect(
 186                         boost::bind(&BufferView::Pimpl::setBuffer, this, (Buffer *)0));
 187 }
 188
 189
 190 void BufferView::Pimpl::disconnectBuffer()
 191 {
 192         errorConnection_.disconnect();
 193         messageConnection_.disconnect();
 194         busyConnection_.disconnect();
 195         titleConnection_.disconnect();
 196         timerConnection_.disconnect();
 197         readonlyConnection_.disconnect();
 198         closingConnection_.disconnect();
 199 }
 200
 201
 202 void BufferView::Pimpl::newFile(string const & filename, string const & tname,
 203         bool isNamed)
 204 {
 205         setBuffer(::newFile(filename, tname, isNamed));
 206 }
 207
 208
 209 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 210 {
 211         // get absolute path of file and add ".lyx" to the filename if
 212         // necessary
 213         string s = FileSearch(string(), filename, "lyx");
 214
 215         bool const found = !s.empty();
 216
 217         if (!found)
 218                 s = filename;
 219
 220         // file already open?
 221         if (bufferlist.exists(s)) {
 222                 string const file = MakeDisplayPath(s, 20);
 223                 string text = bformat(_("The document %1$s is already "
 224                                         "loaded.\n\nDo you want to revert "
 225                                         "to the saved version?"), file);
 226                 int const ret = Alert::prompt(_("Revert to saved document?"),
 227                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 228
 229                 if (ret != 0) {
 230                         setBuffer(bufferlist.getBuffer(s));
 231                         return true;
 232                 }
 233                 // FIXME: should be LFUN_REVERT
 234                 if (!bufferlist.close(bufferlist.getBuffer(s), false))
 235                         return false;
 236                 // Fall through to new load. (Asger)
 237         }
 238
 239         Buffer * b;
 240
 241         if (found) {
 242                 b = bufferlist.newBuffer(s);
 243                 connectBuffer(*b);
 244                 if (!::loadLyXFile(b, s)) {
 245                         bufferlist.release(b);
 246                         return false;
 247                 }
 248         } else {
 249                 string text = bformat(_("The document %1$s does not yet "
 250                                         "exist.\n\nDo you want to create "
 251                                         "a new document?"), s);
 252                 int const ret = Alert::prompt(_("Create new document?"),
 253                          text, 0, 1, _("&Create"), _("Cancel"));
 254
 255                 if (ret == 0)
 256                         b = ::newFile(s, string(), true);
 257                 else
 258                         return false;
 259         }
 260
 261         setBuffer(b);
 262         bv_->showErrorList(_("Parse"));
 263
 264         if (tolastfiles)
 265                 LyX::ref().lastfiles().newFile(b->fileName());
 266
 267         return true;
 268 }
 269
 270
 271 WorkArea & BufferView::Pimpl::workarea() const
 272 {
 273         return *workarea_.get();
 274 }
 275
 276
 277 LyXScreen & BufferView::Pimpl::screen() const
 278 {
 279         return *screen_.get();
 280 }
 281
 282
 283 Painter & BufferView::Pimpl::painter() const
 284 {
 285         return workarea().getPainter();
 286 }
 287
 288
 289 void BufferView::Pimpl::top_y(int y)
 290 {
 291         top_y_ = y;
 292 }
 293
 294
 295 int BufferView::Pimpl::top_y() const
 296 {
 297         return top_y_;
 298 }
 299
 300
 301 void BufferView::Pimpl::setBuffer(Buffer * b)
 302 {
 303         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 304                             << b << ')' << endl;
 305         if (buffer_)
 306                 disconnectBuffer();
 307
 308         // set current buffer
 309         buffer_ = b;
 310
 311         // reset old cursor
 312         top_y_ = 0;
 313         cursor_ = LCursor(*bv_);
 314
 315         // if we're quitting lyx, don't bother updating stuff
 316         if (quitting)
 317                 return;
 318
 319         if (buffer_) {
 320                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 321                 connectBuffer(*buffer_);
 322
 323                 cursor_.push(buffer_->inset());
 324                 cursor_.resetAnchor();
 325                 buffer_->text().init(bv_);
 326
 327                 // If we don't have a text object for this, we make one
 328                 //if (bv_->text() == 0)
 329                 //      resizeCurrentBuffer();
 330
 331                 // Buffer-dependent dialogs should be updated or
 332                 // hidden. This should go here because some dialogs (eg ToC)
 333                 // require bv_->text.
 334                 owner_->getDialogs().updateBufferDependent(true);
 335                 owner_->setLayout(bv_->text()->getPar(0)->layout()->name());
 336         } else {
 337                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 338                 // we are closing the buffer, use the first buffer as current
 339                 buffer_ = bufferlist.first();
 340                 owner_->getDialogs().hideBufferDependent();
 341         }
 342
 343         update();
 344         updateScrollbar();
 345         owner_->updateMenubar();
 346         owner_->updateToolbar();
 347         owner_->updateLayoutChoice();
 348         owner_->updateWindowTitle();
 349
 350         if (lyx::graphics::Previews::activated() && buffer_)
 351                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 352 }
 353
 354
 355 bool BufferView::Pimpl::fitCursor()
 356 {
 357         if (!screen().fitCursor(bv_))
 358                 return false;
 359         updateScrollbar();
 360         return true;
 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->init(bv_);
 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(cur, selstartpar, selstartpos);
 417                         cur.resetAnchor();
 418                         text->setCursor(cur, selendpar, selendpos);
 419                         cur.setSelection();
 420                         text->setCursor(cur, par, pos);
 421                 } else {
 422                         text->setCursor(cur, 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                 lyxerr << "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]
 452                 << "Updating scrollbar: height: " << t.height()
 453                 << " top_y: " << top_y()
 454                 << " default height " << defaultRowHeight() << endl;
 455
 456         workarea().setScrollbarParams(t.height(), top_y(), defaultRowHeight());
 457 }
 458
 459
 460 void BufferView::Pimpl::scrollDocView(int value)
 461 {
 462         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 463
 464         if (!buffer_)
 465                 return;
 466
 467         screen().hideCursor();
 468
 469         top_y(value);
 470         screen().redraw(*bv_);
 471
 472         if (!lyxrc.cursor_follows_scrollbar)
 473                 return;
 474
 475         int const height = defaultRowHeight();
 476         int const first = top_y() + height;
 477         int const last = top_y() + workarea().workHeight() - height;
 478
 479         bv_->cursor().reset();
 480         LyXText * text = bv_->text();
 481         CursorSlice & cur = bv_->cursor().front();
 482         int y = text->cursorY(cur);
 483         if (y < first)
 484                 text->setCursorFromCoordinates(bv_->cursor(), 0, first);
 485         else if (y > last)
 486                 text->setCursorFromCoordinates(bv_->cursor(), 0, last);
 487
 488         owner_->updateLayoutChoice();
 489 }
 490
 491
 492 void BufferView::Pimpl::scroll(int lines)
 493 {
 494         if (!buffer_)
 495                 return;
 496
 497         LyXText const * t = bv_->text();
 498         int const line_height = defaultRowHeight();
 499
 500         // The new absolute coordinate
 501         int new_top_y = top_y() + lines * line_height;
 502
 503         // Restrict to a valid value
 504         new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
 505         new_top_y = std::max(0, new_top_y);
 506
 507         scrollDocView(new_top_y);
 508
 509         // Update the scrollbar.
 510         workarea().setScrollbarParams(t->height(), top_y(), defaultRowHeight());
 511 }
 512
 513
 514 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 515                                          key_modifier::state state)
 516 {
 517         bv_->owner()->getLyXFunc().processKeySym(key, state);
 518
 519         /* This is perhaps a bit of a hack. When we move
 520          * around, or type, it's nice to be able to see
 521          * the cursor immediately after the keypress. So
 522          * we reset the toggle timeout and force the visibility
 523          * of the cursor. Note we cannot do this inside
 524          * dispatch() itself, because that's called recursively.
 525          */
 526         if (available()) {
 527                 cursor_timeout.restart();
 528                 screen().showCursor(*bv_);
 529         }
 530 }
 531
 532
 533 void BufferView::Pimpl::selectionRequested()
 534 {
 535         static string sel;
 536
 537         if (!available())
 538                 return;
 539
 540         LCursor & cur = bv_->cursor();
 541
 542         if (!cur.selection()) {
 543                 xsel_cache_.set = false;
 544                 return;
 545         }
 546
 547         if (!xsel_cache_.set ||
 548             cur.back() != xsel_cache_.cursor ||
 549             cur.anchor_.back() != xsel_cache_.anchor)
 550         {
 551                 xsel_cache_.cursor = cur.back();
 552                 xsel_cache_.anchor = cur.anchor_.back();
 553                 xsel_cache_.set = cur.selection();
 554                 sel = cur.selectionAsString(false);
 555                 if (!sel.empty())
 556                         workarea().putClipboard(sel);
 557         }
 558 }
 559
 560
 561 void BufferView::Pimpl::selectionLost()
 562 {
 563         if (available()) {
 564                 screen().hideCursor();
 565                 bv_->cursor().clearSelection();
 566                 xsel_cache_.set = false;
 567         }
 568 }
 569
 570
 571 void BufferView::Pimpl::workAreaResize()
 572 {
 573         static int work_area_width;
 574         static int work_area_height;
 575
 576         bool const widthChange = workarea().workWidth() != work_area_width;
 577         bool const heightChange = workarea().workHeight() != work_area_height;
 578
 579         // update from work area
 580         work_area_width = workarea().workWidth();
 581         work_area_height = workarea().workHeight();
 582
 583         if (buffer_ && widthChange) {
 584                 // The visible LyXView need a resize
 585                 resizeCurrentBuffer();
 586         }
 587
 588         if (widthChange || heightChange)
 589                 update();
 590
 591         // always make sure that the scrollbar is sane.
 592         updateScrollbar();
 593         owner_->updateLayoutChoice();
 594 }
 595
 596
 597 void BufferView::Pimpl::update()
 598 {
 599         //lyxerr << "BufferView::Pimpl::update(), buffer: " << buffer_ << endl;
 600         // fix cursor coordinate cache in case something went wrong
 601
 602         // check needed to survive LyX startup
 603         if (buffer_) {
 604                 // update all 'visible' paragraphs
 605                 ParagraphList::iterator beg;
 606                 ParagraphList::iterator end;
 607                 getParsInRange(buffer_->paragraphs(),
 608                                top_y(), top_y() + workarea().workHeight(),
 609                                beg, end);
 610                 bv_->text()->redoParagraphs(beg, end);
 611                 updateScrollbar();
 612         }
 613         screen().redraw(*bv_);
 614         bv_->owner()->view_state_changed();
 615 }
 616
 617
 618 // Callback for cursor timer
 619 void BufferView::Pimpl::cursorToggle()
 620 {
 621         if (buffer_)
 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$s"), tostr(i)));
 658 }
 659
 660
 661 void BufferView::Pimpl::restorePosition(unsigned int i)
 662 {
 663         if (i >= saved_positions_num)
 664                 return;
 665
 666         string const fname = saved_positions[i].filename;
 667
 668         bv_->cursor().clearSelection();
 669
 670         if (fname != buffer_->fileName()) {
 671                 Buffer * b = 0;
 672                 if (bufferlist.exists(fname))
 673                         b = bufferlist.getBuffer(fname);
 674                 else {
 675                         b = bufferlist.newBuffer(fname);
 676                         ::loadLyXFile(b, fname); // don't ask, just load it
 677                 }
 678                 if (b)
 679                         setBuffer(b);
 680         }
 681
 682         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 683         if (par == buffer_->par_iterator_end())
 684                 return;
 685
 686         bv_->text()->setCursor(
 687                 bv_->cursor(),
 688                 bv_->text()->parOffset(par.pit()),
 689                 min(par->size(), saved_positions[i].par_pos));
 690
 691         if (i > 0)
 692                 owner_->message(bformat(_("Moved to bookmark %1$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().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 (including
 874         // LFUN_FILE_OPEN generated by drag-and-drop)
 875         //
 876         FuncRequest cmd = cmd0;
 877         cmd.y += bv_->top_y();
 878         //lyxerr << "*** workAreaDispatch: request: " << cmd << std::endl;
 879         LCursor cur(*bv_);
 880         cur.push(bv_->buffer()->inset());
 881         cur.resetAnchor();
 882         cur.selection() = bv_->cursor().selection();
 883         switch (cmd.action) {
 884
 885 #if 0
 886         case LFUN_MOUSE_MOTION: {
 887                 if (!available())
 888                         return false;
 889                 FuncRequest cmd1 = cmd;
 890                 DispatchResult res = cur.inset().dispatch(cur, cmd);
 891                 if (fitCursor() || res.update()) {
 892                         update();
 893                         cur.updatePos();
 894                 }
 895                 return true;
 896         }
 897 #else
 898         case LFUN_MOUSE_MOTION:
 899 #endif
 900
 901         case LFUN_MOUSE_PRESS:
 902         case LFUN_MOUSE_RELEASE:
 903         case LFUN_MOUSE_DOUBLE:
 904         case LFUN_MOUSE_TRIPLE: {
 905                 // We pass those directly to the Bufferview, since
 906                 // otherwise selection handling breaks down
 907
 908                 // Doesn't go through lyxfunc, so we need to update
 909                 // the layout choice etc. ourselves
 910
 911                 // e.g. Qt mouse press when no buffer
 912                 if (!available())
 913                         return false;
 914
 915                 screen().hideCursor();
 916
 917                 // either the inset under the cursor or the
 918                 // surrounding LyXText will handle this event.
 919
 920                 // built temporary path to inset
 921                 InsetBase * inset = bv_->text()->editXY(cur, cmd.x, cmd.y);
 922                 lyxerr << "hit inset at tip: " << inset << endl;
 923                 lyxerr << "created temp cursor:\n" << cur << endl;
 924
 925                 // Try to dispatch to an non-editable inset near this position
 926                 DispatchResult res;
 927                 if (inset)
 928                         inset->dispatch(cur, cmd);
 929
 930                 // Dispatch to the temp cursor.
 931                 // An inset (or LyXText) can assign this to bv->cursor()
 932                 // if it wishes to do so.
 933                 if (!res.dispatched())
 934                         res = cur.dispatch(cmd);
 935
 936                 if (fitCursor() || res.update())
 937                         update();
 938
 939                 // see workAreaKeyPress
 940                 cursor_timeout.restart();
 941                 screen().showCursor(*bv_);
 942
 943                 // skip these when selecting
 944                 if (cmd.action != LFUN_MOUSE_MOTION) {
 945                         owner_->updateLayoutChoice();
 946                         owner_->updateToolbar();
 947                 }
 948
 949                 // slight hack: this is only called currently when we
 950                 // clicked somewhere, so we force through the display
 951                 // of the new status here.
 952                 owner_->clearMessage();
 953                 return true;
 954         }
 955
 956         case LFUN_FILE_OPEN:
 957                 owner_->dispatch(cmd);
 958                 return true;
 959
 960         default:
 961                 BOOST_ASSERT(false);
 962         }
 963         return true;
 964 }
 965
 966
 967 bool BufferView::Pimpl::dispatch(FuncRequest const & cmd)
 968 {
 969         //lyxerr << "*** BufferView::Pimpl: request: " << cmd << std::endl;
 970         // Make sure that the cached BufferView is correct.
 971         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
 972                 << " action[" << cmd.action << ']'
 973                 << " arg[" << cmd.argument << ']'
 974                 << " x[" << cmd.x << ']'
 975                 << " y[" << cmd.y << ']'
 976                 << " button[" << cmd.button() << ']'
 977                 << endl;
 978
 979         LCursor & cur = bv_->cursor();
 980
 981         switch (cmd.action) {
 982
 983         case LFUN_UNDO:
 984                 if (available()) {
 985                         cur.message(_("Undo"));
 986                         cur.clearSelection();
 987                         if (!textUndo(*bv_))
 988                                 cur.message(_("No further undo information"));
 989                         update();
 990                         switchKeyMap();
 991                 }
 992                 break;
 993
 994         case LFUN_REDO:
 995                 if (available()) {
 996                         cur.message(_("Redo"));
 997                         cur.clearSelection();
 998                         if (!textRedo(*bv_))
 999                                 cur.message(_("No further redo information"));
1000                         update();
1001                         switchKeyMap();
1002                 }
1003                 break;
1004
1005         case LFUN_FILE_INSERT:
1006                 MenuInsertLyXFile(cmd.argument);
1007                 break;
1008
1009         case LFUN_FILE_INSERT_ASCII_PARA:
1010                 InsertAsciiFile(bv_, cmd.argument, true);
1011                 break;
1012
1013         case LFUN_FILE_INSERT_ASCII:
1014                 InsertAsciiFile(bv_, cmd.argument, false);
1015                 break;
1016
1017         case LFUN_FONT_STATE:
1018                 cur.message(cur.currentState());
1019                 break;
1020
1021         case LFUN_INSERT_LABEL: {
1022                 // Try and generate a valid label
1023                 string const contents = cmd.argument.empty() ?
1024                         cur.getPossibleLabel() : cmd.argument;
1025                 InsetCommandParams icp("label", contents);
1026                 string data = InsetCommandMailer::params2string("label", icp);
1027                 owner_->getDialogs().show("label", data, 0);
1028                 break;
1029         }
1030
1031         case LFUN_BOOKMARK_SAVE:
1032                 savePosition(strToUnsignedInt(cmd.argument));
1033                 break;
1034
1035         case LFUN_BOOKMARK_GOTO:
1036                 restorePosition(strToUnsignedInt(cmd.argument));
1037                 break;
1038
1039         case LFUN_REF_GOTO: {
1040                 string label = cmd.argument;
1041                 if (label.empty()) {
1042                         InsetRef * inset =
1043                                 static_cast<InsetRef*>(getInsetByCode(InsetBase::REF_CODE));
1044                         if (inset) {
1045                                 label = inset->getContents();
1046                                 savePosition(0);
1047                         }
1048                 }
1049
1050                 if (!label.empty())
1051                         bv_->gotoLabel(label);
1052                 break;
1053         }
1054
1055         case LFUN_TRACK_CHANGES:
1056                 trackChanges();
1057                 break;
1058
1059         case LFUN_MERGE_CHANGES:
1060                 owner_->getDialogs().show("changes");
1061                 break;
1062
1063         case LFUN_ACCEPT_ALL_CHANGES: {
1064                 bv_->cursor().reset();
1065 #warning FIXME changes
1066                 while (lyx::find::findNextChange(bv_))
1067                         bv_->getLyXText()->acceptChange(bv_->cursor());
1068                 update();
1069                 break;
1070         }
1071
1072         case LFUN_REJECT_ALL_CHANGES: {
1073                 bv_->cursor().reset();
1074 #warning FIXME changes
1075                 while (lyx::find::findNextChange(bv_))
1076                         bv_->getLyXText()->rejectChange(bv_->cursor());
1077                 update();
1078                 break;
1079         }
1080
1081         case LFUN_WORD_FIND:
1082                 lyx::find::find(bv_, cmd);
1083                 break;
1084
1085         case LFUN_WORD_REPLACE:
1086                 lyx::find::replace(bv_, cmd);
1087                 break;
1088
1089         case LFUN_MARK_OFF:
1090                 cur.clearSelection();
1091                 update();
1092                 cur.resetAnchor();
1093                 cur.message(N_("Mark off"));
1094                 break;
1095
1096         case LFUN_MARK_ON:
1097                 cur.clearSelection();
1098                 cur.mark() = true;
1099                 update();
1100                 cur.resetAnchor();
1101                 cur.message(N_("Mark on"));
1102                 break;
1103
1104         case LFUN_SETMARK:
1105                 cur.clearSelection();
1106                 if (cur.mark()) {
1107                         cur.mark() = false;
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         case LFUN_CENTER:
1122                 bv_->center();
1123                 break;
1124
1125         case LFUN_BEGINNINGBUFSEL:
1126                 bv_->cursor().reset();
1127                 if (!cur.selection())
1128                         cur.resetAnchor();
1129                 bv_->text()->cursorTop(cur);
1130                 finishUndo();
1131                 break;
1132
1133         case LFUN_ENDBUFSEL:
1134                 bv_->cursor().reset();
1135                 if (!cur.selection())
1136                         cur.resetAnchor();
1137                 bv_->text()->cursorBottom(cur);
1138                 finishUndo();
1139                 break;
1140
1141         default:
1142                 return false;
1143         }
1144
1145         return true;
1146 }