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/forkedcontr.h"
  64 #include "support/globbing.h"
  65 #include "support/path_defines.h"
  66 #include "support/tostr.h"
  67
  68 #include <boost/bind.hpp>
  69
  70 using lyx::pos_type;
  71
  72 using lyx::support::AddPath;
  73 using lyx::support::bformat;
  74 using lyx::support::FileFilterList;
  75 using lyx::support::FileSearch;
  76 using lyx::support::ForkedcallsController;
  77 using lyx::support::IsDirWriteable;
  78 using lyx::support::MakeDisplayPath;
  79 using lyx::support::strToUnsignedInt;
  80 using lyx::support::system_lyxdir;
  81
  82 using std::endl;
  83 using std::istringstream;
  84 using std::make_pair;
  85 using std::min;
  86 using std::string;
  87
  88
  89 extern BufferList bufferlist;
  90
  91
  92 namespace {
  93
  94 unsigned int const saved_positions_num = 20;
  95
  96 // All the below connection objects are needed because of a bug in some
  97 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
  98 // to these connections we avoid a segfault upon startup, and also at exit.
  99 // (Lgb)
 100
 101 boost::signals::connection dispatchcon;
 102 boost::signals::connection timecon;
 103 boost::signals::connection doccon;
 104 boost::signals::connection resizecon;
 105 boost::signals::connection kpresscon;
 106 boost::signals::connection selectioncon;
 107 boost::signals::connection lostcon;
 108
 109
 110 } // anon namespace
 111
 112
 113 BufferView::Pimpl::Pimpl(BufferView & bv, LyXView * owner,
 114              int xpos, int ypos, int width, int height)
 115         : bv_(&bv), owner_(owner), buffer_(0), cursor_timeout(400),
 116           using_xterm_cursor(false), cursor_(bv)
 117 {
 118         xsel_cache_.set = false;
 119
 120         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 121         screen_.reset(LyXScreenFactory::create(workarea()));
 122
 123         // Setup the signals
 124         doccon = workarea().scrollDocView
 125                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 126         resizecon = workarea().workAreaResize
 127                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 128         dispatchcon = workarea().dispatch
 129                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 130         kpresscon = workarea().workAreaKeyPress
 131                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 132         selectioncon = workarea().selectionRequested
 133                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 134         lostcon = workarea().selectionLost
 135                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 136
 137         timecon = cursor_timeout.timeout
 138                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 139         cursor_timeout.start();
 140         saved_positions.resize(saved_positions_num);
 141 }
 142
 143
 144 void BufferView::Pimpl::addError(ErrorItem const & ei)
 145 {
 146         errorlist_.push_back(ei);
 147 }
 148
 149
 150 void BufferView::Pimpl::showReadonly(bool)
 151 {
 152         owner_->updateWindowTitle();
 153         owner_->getDialogs().updateBufferDependent(false);
 154 }
 155
 156
 157 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 158 {
 159         if (errorConnection_.connected())
 160                 disconnectBuffer();
 161
 162         errorConnection_ =
 163                 buf.error.connect(
 164                         boost::bind(&BufferView::Pimpl::addError, this, _1));
 165
 166         messageConnection_ =
 167                 buf.message.connect(
 168                         boost::bind(&LyXView::message, owner_, _1));
 169
 170         busyConnection_ =
 171                 buf.busy.connect(
 172                         boost::bind(&LyXView::busy, owner_, _1));
 173
 174         titleConnection_ =
 175                 buf.updateTitles.connect(
 176                         boost::bind(&LyXView::updateWindowTitle, owner_));
 177
 178         timerConnection_ =
 179                 buf.resetAutosaveTimers.connect(
 180                         boost::bind(&LyXView::resetAutosaveTimer, owner_));
 181
 182         readonlyConnection_ =
 183                 buf.readonly.connect(
 184                         boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 185
 186         closingConnection_ =
 187                 buf.closing.connect(
 188                         boost::bind(&BufferView::Pimpl::setBuffer, this, (Buffer *)0));
 189 }
 190
 191
 192 void BufferView::Pimpl::disconnectBuffer()
 193 {
 194         errorConnection_.disconnect();
 195         messageConnection_.disconnect();
 196         busyConnection_.disconnect();
 197         titleConnection_.disconnect();
 198         timerConnection_.disconnect();
 199         readonlyConnection_.disconnect();
 200         closingConnection_.disconnect();
 201 }
 202
 203
 204 void BufferView::Pimpl::newFile(string const & filename, string const & tname,
 205         bool isNamed)
 206 {
 207         setBuffer(::newFile(filename, tname, isNamed));
 208 }
 209
 210
 211 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 212 {
 213         // get absolute path of file and add ".lyx" to the filename if
 214         // necessary
 215         string s = FileSearch(string(), filename, "lyx");
 216
 217         bool const found = !s.empty();
 218
 219         if (!found)
 220                 s = filename;
 221
 222         // file already open?
 223         if (bufferlist.exists(s)) {
 224                 string const file = MakeDisplayPath(s, 20);
 225                 string text = bformat(_("The document %1$s is already "
 226                                         "loaded.\n\nDo you want to revert "
 227                                         "to the saved version?"), file);
 228                 int const ret = Alert::prompt(_("Revert to saved document?"),
 229                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 230
 231                 if (ret != 0) {
 232                         setBuffer(bufferlist.getBuffer(s));
 233                         return true;
 234                 }
 235                 // FIXME: should be LFUN_REVERT
 236                 if (!bufferlist.close(bufferlist.getBuffer(s), false))
 237                         return false;
 238                 // Fall through to new load. (Asger)
 239         }
 240
 241         Buffer * b;
 242
 243         if (found) {
 244                 b = bufferlist.newBuffer(s);
 245                 connectBuffer(*b);
 246                 if (!::loadLyXFile(b, s)) {
 247                         bufferlist.release(b);
 248                         return false;
 249                 }
 250         } else {
 251                 string text = bformat(_("The document %1$s does not yet "
 252                                         "exist.\n\nDo you want to create "
 253                                         "a new document?"), s);
 254                 int const ret = Alert::prompt(_("Create new document?"),
 255                          text, 0, 1, _("&Create"), _("Cancel"));
 256
 257                 if (ret == 0)
 258                         b = ::newFile(s, string(), true);
 259                 else
 260                         return false;
 261         }
 262
 263         setBuffer(b);
 264         bv_->showErrorList(_("Parse"));
 265
 266         if (tolastfiles)
 267                 LyX::ref().lastfiles().newFile(b->fileName());
 268
 269         return true;
 270 }
 271
 272
 273 WorkArea & BufferView::Pimpl::workarea() const
 274 {
 275         return *workarea_.get();
 276 }
 277
 278
 279 LyXScreen & BufferView::Pimpl::screen() const
 280 {
 281         return *screen_.get();
 282 }
 283
 284
 285 Painter & BufferView::Pimpl::painter() const
 286 {
 287         return workarea().getPainter();
 288 }
 289
 290
 291 void BufferView::Pimpl::top_y(int y)
 292 {
 293         top_y_ = y;
 294 }
 295
 296
 297 int BufferView::Pimpl::top_y() const
 298 {
 299         return top_y_;
 300 }
 301
 302
 303 void BufferView::Pimpl::setBuffer(Buffer * b)
 304 {
 305         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 306                             << b << ')' << endl;
 307         if (buffer_)
 308                 disconnectBuffer();
 309
 310         // set current buffer
 311         buffer_ = b;
 312
 313         // reset old cursor
 314         top_y_ = 0;
 315         cursor_ = LCursor(*bv_);
 316
 317         // if we're quitting lyx, don't bother updating stuff
 318         if (quitting)
 319                 return;
 320
 321         if (buffer_) {
 322                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 323                 connectBuffer(*buffer_);
 324
 325                 cursor_.push(buffer_->inset());
 326                 cursor_.resetAnchor();
 327                 buffer_->text().init(bv_);
 328
 329                 // If we don't have a text object for this, we make one
 330                 //if (bv_->text() == 0)
 331                 //      resizeCurrentBuffer();
 332
 333                 // Buffer-dependent dialogs should be updated or
 334                 // hidden. This should go here because some dialogs (eg ToC)
 335                 // require bv_->text.
 336                 owner_->getDialogs().updateBufferDependent(true);
 337                 owner_->setLayout(bv_->text()->getPar(0)->layout()->name());
 338         } else {
 339                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 340                 // we are closing the buffer, use the first buffer as current
 341                 buffer_ = bufferlist.first();
 342                 owner_->getDialogs().hideBufferDependent();
 343         }
 344
 345         update();
 346         updateScrollbar();
 347         owner_->updateMenubar();
 348         owner_->updateToolbar();
 349         owner_->updateLayoutChoice();
 350         owner_->updateWindowTitle();
 351
 352         if (lyx::graphics::Previews::activated() && buffer_)
 353                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 354 }
 355
 356
 357 bool BufferView::Pimpl::fitCursor()
 358 {
 359         if (!screen().fitCursor(bv_))
 360                 return false;
 361         updateScrollbar();
 362         return true;
 363 }
 364
 365
 366 void BufferView::Pimpl::redoCurrentBuffer()
 367 {
 368         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 369         if (buffer_ && bv_->text()) {
 370                 resizeCurrentBuffer();
 371                 updateScrollbar();
 372                 owner_->updateLayoutChoice();
 373         }
 374 }
 375
 376
 377 void BufferView::Pimpl::resizeCurrentBuffer()
 378 {
 379         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 380
 381         owner_->busy(true);
 382
 383         owner_->message(_("Formatting document..."));
 384
 385         LyXText * text = bv_->text();
 386         lyxerr << "### resizeCurrentBuffer: text " << text << endl;
 387         if (!text)
 388                 return;
 389
 390         // save the cursor mangled in init
 391         LCursor cur = bv_->cursor();
 392         text->init(bv_);
 393         update();
 394         bv_->cursor() = cur;
 395         bv_->cursor().updatePos();
 396         fitCursor();
 397
 398         switchKeyMap();
 399         owner_->busy(false);
 400
 401         // reset the "Formatting..." message
 402         owner_->clearMessage();
 403
 404         updateScrollbar();
 405 }
 406
 407
 408 void BufferView::Pimpl::updateScrollbar()
 409 {
 410         if (!bv_->text()) {
 411                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 412                 lyxerr << "no text in updateScrollbar" << endl;
 413                 workarea().setScrollbarParams(0, 0, 0);
 414                 return;
 415         }
 416
 417         LyXText const & t = *bv_->text();
 418
 419         lyxerr[Debug::GUI]
 420                 << "Updating scrollbar: height: " << t.height()
 421                 << " top_y: " << top_y()
 422                 << " default height " << defaultRowHeight() << endl;
 423
 424         workarea().setScrollbarParams(t.height(), top_y(), defaultRowHeight());
 425 }
 426
 427
 428 void BufferView::Pimpl::scrollDocView(int value)
 429 {
 430         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 431
 432         if (!buffer_)
 433                 return;
 434
 435         screen().hideCursor();
 436
 437         top_y(value);
 438         screen().redraw(*bv_);
 439
 440         if (!lyxrc.cursor_follows_scrollbar)
 441                 return;
 442
 443         int const height = defaultRowHeight();
 444         int const first = top_y() + height;
 445         int const last = top_y() + workarea().workHeight() - height;
 446
 447         bv_->cursor().reset(bv_->buffer()->inset());
 448         LyXText * text = bv_->text();
 449         int y = text->cursorY(bv_->cursor().front());
 450         if (y < first)
 451                 y = first;
 452         if (y > last)
 453                 y = last;
 454         text->setCursorFromCoordinates(bv_->cursor(), 0, y);
 455
 456         owner_->updateLayoutChoice();
 457 }
 458
 459
 460 void BufferView::Pimpl::scroll(int lines)
 461 {
 462         if (!buffer_)
 463                 return;
 464
 465         LyXText const * t = bv_->text();
 466         int const line_height = defaultRowHeight();
 467
 468         // The new absolute coordinate
 469         int new_top_y = top_y() + lines * line_height;
 470
 471         // Restrict to a valid value
 472         new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
 473         new_top_y = std::max(0, new_top_y);
 474
 475         scrollDocView(new_top_y);
 476
 477         // Update the scrollbar.
 478         workarea().setScrollbarParams(t->height(), top_y(), defaultRowHeight());
 479 }
 480
 481
 482 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 483                                          key_modifier::state state)
 484 {
 485         bv_->owner()->getLyXFunc().processKeySym(key, state);
 486
 487         /* This is perhaps a bit of a hack. When we move
 488          * around, or type, it's nice to be able to see
 489          * the cursor immediately after the keypress. So
 490          * we reset the toggle timeout and force the visibility
 491          * of the cursor. Note we cannot do this inside
 492          * dispatch() itself, because that's called recursively.
 493          */
 494         if (available()) {
 495                 cursor_timeout.restart();
 496                 screen().showCursor(*bv_);
 497         }
 498 }
 499
 500
 501 void BufferView::Pimpl::selectionRequested()
 502 {
 503         static string sel;
 504
 505         if (!available())
 506                 return;
 507
 508         LCursor & cur = bv_->cursor();
 509
 510         if (!cur.selection()) {
 511                 xsel_cache_.set = false;
 512                 return;
 513         }
 514
 515         if (!xsel_cache_.set ||
 516             cur.back() != xsel_cache_.cursor ||
 517             cur.anchor_.back() != xsel_cache_.anchor)
 518         {
 519                 xsel_cache_.cursor = cur.back();
 520                 xsel_cache_.anchor = cur.anchor_.back();
 521                 xsel_cache_.set = cur.selection();
 522                 sel = cur.selectionAsString(false);
 523                 if (!sel.empty())
 524                         workarea().putClipboard(sel);
 525         }
 526 }
 527
 528
 529 void BufferView::Pimpl::selectionLost()
 530 {
 531         if (available()) {
 532                 screen().hideCursor();
 533                 bv_->cursor().clearSelection();
 534                 xsel_cache_.set = false;
 535         }
 536 }
 537
 538
 539 void BufferView::Pimpl::workAreaResize()
 540 {
 541         static int work_area_width;
 542         static int work_area_height;
 543
 544         bool const widthChange = workarea().workWidth() != work_area_width;
 545         bool const heightChange = workarea().workHeight() != work_area_height;
 546
 547         // update from work area
 548         work_area_width = workarea().workWidth();
 549         work_area_height = workarea().workHeight();
 550
 551         if (buffer_ && widthChange) {
 552                 // The visible LyXView need a resize
 553                 resizeCurrentBuffer();
 554         }
 555
 556         if (widthChange || heightChange)
 557                 update();
 558
 559         // always make sure that the scrollbar is sane.
 560         updateScrollbar();
 561         owner_->updateLayoutChoice();
 562 }
 563
 564
 565 void BufferView::Pimpl::update()
 566 {
 567         //lyxerr << "BufferView::Pimpl::update(), buffer: " << buffer_ << endl;
 568         // fix cursor coordinate cache in case something went wrong
 569
 570         // check needed to survive LyX startup
 571         if (buffer_) {
 572                 // update all 'visible' paragraphs
 573                 ParagraphList::iterator beg;
 574                 ParagraphList::iterator end;
 575                 getParsInRange(buffer_->paragraphs(),
 576                                top_y(), top_y() + workarea().workHeight(),
 577                                beg, end);
 578                 bv_->text()->redoParagraphs(beg, end);
 579                 updateScrollbar();
 580         }
 581         screen().redraw(*bv_);
 582         bv_->owner()->view_state_changed();
 583 }
 584
 585
 586 // Callback for cursor timer
 587 void BufferView::Pimpl::cursorToggle()
 588 {
 589         if (buffer_) {
 590                 screen().toggleCursor(*bv_);
 591
 592                 // Use this opportunity to deal with any child processes that
 593                 // have finished but are waiting to communicate this fact
 594                 // to the rest of LyX.
 595                 ForkedcallsController & fcc = ForkedcallsController::get();
 596                 if (fcc.processesCompleted())
 597                         fcc.handleCompletedProcesses();
 598         }
 599
 600         cursor_timeout.restart();
 601 }
 602
 603
 604 bool BufferView::Pimpl::available() const
 605 {
 606         return buffer_ && bv_->text();
 607 }
 608
 609
 610 Change const BufferView::Pimpl::getCurrentChange()
 611 {
 612         if (!bv_->buffer()->params().tracking_changes)
 613                 return Change(Change::UNCHANGED);
 614
 615         LyXText * text = bv_->getLyXText();
 616         LCursor & cur = bv_->cursor();
 617
 618         if (!cur.selection())
 619                 return Change(Change::UNCHANGED);
 620
 621         return text->getPar(cur.selBegin())
 622                 ->lookupChangeFull(cur.selBegin().pos());
 623 }
 624
 625
 626 void BufferView::Pimpl::savePosition(unsigned int i)
 627 {
 628         if (i >= saved_positions_num)
 629                 return;
 630         BOOST_ASSERT(bv_->cursor().inTexted());
 631         saved_positions[i] = Position(buffer_->fileName(),
 632                                       bv_->cursor().paragraph().id(),
 633                                       bv_->cursor().pos());
 634         if (i > 0)
 635                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 636 }
 637
 638
 639 void BufferView::Pimpl::restorePosition(unsigned int i)
 640 {
 641         if (i >= saved_positions_num)
 642                 return;
 643
 644         string const fname = saved_positions[i].filename;
 645
 646         bv_->cursor().clearSelection();
 647
 648         if (fname != buffer_->fileName()) {
 649                 Buffer * b = 0;
 650                 if (bufferlist.exists(fname))
 651                         b = bufferlist.getBuffer(fname);
 652                 else {
 653                         b = bufferlist.newBuffer(fname);
 654                         ::loadLyXFile(b, fname); // don't ask, just load it
 655                 }
 656                 if (b)
 657                         setBuffer(b);
 658         }
 659
 660         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 661         if (par == buffer_->par_iterator_end())
 662                 return;
 663
 664         bv_->text()->setCursor(
 665                 bv_->cursor(),
 666                 bv_->text()->parOffset(par.pit()),
 667                 min(par->size(), saved_positions[i].par_pos));
 668
 669         if (i > 0)
 670                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 671 }
 672
 673
 674 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 675 {
 676         return i < saved_positions_num && !saved_positions[i].filename.empty();
 677 }
 678
 679
 680 void BufferView::Pimpl::switchKeyMap()
 681 {
 682         if (!lyxrc.rtl_support)
 683                 return;
 684
 685         Intl & intl = owner_->getIntl();
 686         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 687                 if (intl.keymap == Intl::PRIMARY)
 688                         intl.KeyMapSec();
 689         } else {
 690                 if (intl.keymap == Intl::SECONDARY)
 691                         intl.KeyMapPrim();
 692         }
 693 }
 694
 695
 696 void BufferView::Pimpl::center()
 697 {
 698         LyXText * text = bv_->text();
 699
 700         bv_->cursor().clearSelection();
 701         int const half_height = workarea().workHeight() / 2;
 702         int new_y = text->cursorY(bv_->cursor().front()) - half_height;
 703         if (new_y < 0)
 704                 new_y = 0;
 705
 706         // FIXME: look at this comment again ...
 707         // This updates top_y() but means the fitCursor() call
 708         // from the update(FITCUR) doesn't realise that we might
 709         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 710         // the scrollbar to be updated as it should, so we have
 711         // to do it manually. Any operation that does a center()
 712         // and also might have moved top_y() must make sure to call
 713         // updateScrollbar() currently. Never mind that this is a
 714         // pretty obfuscated way of updating text->top_y()
 715         top_y(new_y);
 716 }
 717
 718
 719 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 720 {
 721         workarea().putClipboard(stuff);
 722 }
 723
 724
 725 InsetBase * BufferView::Pimpl::getInsetByCode(InsetBase::Code code)
 726 {
 727 #warning Does not work for mathed
 728         // Ok, this is a little bit too brute force but it
 729         // should work for now. Better infrastructure is coming. (Lgb)
 730
 731         Buffer * buf = bv_->buffer();
 732         Buffer::inset_iterator beg = buf->inset_iterator_begin();
 733         Buffer::inset_iterator end = buf->inset_iterator_end();
 734
 735         bool cursor_par_seen = false;
 736
 737         LCursor & cur = bv_->cursor();
 738         ParagraphList::iterator pit =  bv_->getLyXText()->getPar(cur.par());
 739
 740         for (; beg != end; ++beg) {
 741                 if (beg.getPar() == pit)
 742                         cursor_par_seen = true;
 743                 if (cursor_par_seen) {
 744                         if (beg.getPar() == pit && beg.getPos() >= cur.pos())
 745                                 break;
 746                         if (beg.getPar() != pit)
 747                                 break;
 748                 }
 749         }
 750         if (beg != end) {
 751                 // Now find the first inset that matches code.
 752                 for (; beg != end; ++beg) {
 753                         if (beg->lyxCode() == code)
 754                                 return &(*beg);
 755                 }
 756         }
 757         return 0;
 758 }
 759
 760
 761 void BufferView::Pimpl::MenuInsertLyXFile(string const & filenm)
 762 {
 763         string filename = filenm;
 764
 765         if (filename.empty()) {
 766                 // Launch a file browser
 767                 string initpath = lyxrc.document_path;
 768
 769                 if (available()) {
 770                         string const trypath = owner_->buffer()->filePath();
 771                         // If directory is writeable, use this as default.
 772                         if (IsDirWriteable(trypath))
 773                                 initpath = trypath;
 774                 }
 775
 776                 FileDialog fileDlg(_("Select LyX document to insert"),
 777                         LFUN_FILE_INSERT,
 778                         make_pair(string(_("Documents|#o#O")),
 779                                   string(lyxrc.document_path)),
 780                         make_pair(string(_("Examples|#E#e")),
 781                                   string(AddPath(system_lyxdir(), "examples"))));
 782
 783                 FileDialog::Result result =
 784                         fileDlg.open(initpath,
 785                                      FileFilterList(_("LyX Documents (*.lyx)")),
 786                                      string());
 787
 788                 if (result.first == FileDialog::Later)
 789                         return;
 790
 791                 filename = result.second;
 792
 793                 // check selected filename
 794                 if (filename.empty()) {
 795                         owner_->message(_("Canceled."));
 796                         return;
 797                 }
 798         }
 799
 800         // get absolute path of file and add ".lyx" to the filename if
 801         // necessary
 802         filename = FileSearch(string(), filename, "lyx");
 803
 804         string const disp_fn = MakeDisplayPath(filename);
 805         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 806         if (bv_->insertLyXFile(filename))
 807                 owner_->message(bformat(_("Document %1$s inserted."),
 808                                         disp_fn));
 809         else
 810                 owner_->message(bformat(_("Could not insert document %1$s"),
 811                                         disp_fn));
 812 }
 813
 814
 815 void BufferView::Pimpl::trackChanges()
 816 {
 817         Buffer * buf = bv_->buffer();
 818         bool const tracking = buf->params().tracking_changes;
 819
 820         if (!tracking) {
 821                 ParIterator const end = buf->par_iterator_end();
 822                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 823                         it->trackChanges();
 824                 buf->params().tracking_changes = true;
 825
 826                 // we cannot allow undos beyond the freeze point
 827                 buf->undostack().clear();
 828         } else {
 829                 update();
 830                 bv_->text()->setCursor(bv_->cursor(), 0, 0);
 831 #warning changes FIXME
 832                 bool found = lyx::find::findNextChange(bv_);
 833                 if (found) {
 834                         owner_->getDialogs().show("changes");
 835                         return;
 836                 }
 837
 838                 ParIterator const end = buf->par_iterator_end();
 839                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 840                         it->untrackChanges();
 841                 buf->params().tracking_changes = false;
 842         }
 843
 844         buf->redostack().clear();
 845 }
 846
 847
 848 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd0)
 849 {
 850         //
 851         // this is only called for mouse related events (including
 852         // LFUN_FILE_OPEN generated by drag-and-drop)
 853         //
 854         FuncRequest cmd = cmd0;
 855         cmd.y += bv_->top_y();
 856         //lyxerr << "*** workAreaDispatch: request: " << cmd << std::endl;
 857         LCursor cur(*bv_);
 858         cur.push(bv_->buffer()->inset());
 859         cur.resetAnchor();
 860         cur.selection() = bv_->cursor().selection();
 861         switch (cmd.action) {
 862
 863 #if 0
 864         case LFUN_MOUSE_MOTION: {
 865                 if (!available())
 866                         return false;
 867                 FuncRequest cmd1 = cmd;
 868                 DispatchResult res = cur.inset().dispatch(cur, cmd);
 869                 if (fitCursor() || res.update()) {
 870                         update();
 871                         cur.updatePos();
 872                 }
 873                 return true;
 874         }
 875 #else
 876         case LFUN_MOUSE_MOTION:
 877 #endif
 878
 879         case LFUN_MOUSE_PRESS:
 880         case LFUN_MOUSE_RELEASE:
 881         case LFUN_MOUSE_DOUBLE:
 882         case LFUN_MOUSE_TRIPLE: {
 883                 // We pass those directly to the Bufferview, since
 884                 // otherwise selection handling breaks down
 885
 886                 // Doesn't go through lyxfunc, so we need to update
 887                 // the layout choice etc. ourselves
 888
 889                 // e.g. Qt mouse press when no buffer
 890                 if (!available())
 891                         return false;
 892
 893                 screen().hideCursor();
 894
 895                 // either the inset under the cursor or the
 896                 // surrounding LyXText will handle this event.
 897
 898                 // built temporary path to inset
 899                 InsetBase * inset = bv_->text()->editXY(cur, cmd.x, cmd.y);
 900                 lyxerr << "hit inset at tip: " << inset << endl;
 901                 lyxerr << "created temp cursor:\n" << cur << endl;
 902
 903                 // Try to dispatch to an non-editable inset near this position
 904                 DispatchResult res;
 905                 if (inset)
 906                         inset->dispatch(cur, cmd);
 907
 908                 // Dispatch to the temp cursor.
 909                 // An inset (or LyXText) can assign this to bv->cursor()
 910                 // if it wishes to do so.
 911                 if (!res.dispatched())
 912                         res = cur.dispatch(cmd);
 913
 914                 if (fitCursor() || res.update())
 915                         update();
 916
 917                 // see workAreaKeyPress
 918                 cursor_timeout.restart();
 919                 screen().showCursor(*bv_);
 920
 921                 // skip these when selecting
 922                 if (cmd.action != LFUN_MOUSE_MOTION) {
 923                         owner_->updateLayoutChoice();
 924                         owner_->updateToolbar();
 925                 }
 926
 927                 // slight hack: this is only called currently when we
 928                 // clicked somewhere, so we force through the display
 929                 // of the new status here.
 930                 owner_->clearMessage();
 931                 return true;
 932         }
 933
 934         case LFUN_FILE_OPEN:
 935                 owner_->dispatch(cmd);
 936                 return true;
 937
 938         default:
 939                 BOOST_ASSERT(false);
 940         }
 941         return true;
 942 }
 943
 944
 945 bool BufferView::Pimpl::dispatch(FuncRequest const & cmd)
 946 {
 947         //lyxerr << "BufferView::Pimpl::dispatch  cmd: " << cmd << std::endl;
 948         // Make sure that the cached BufferView is correct.
 949         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
 950                 << " action[" << cmd.action << ']'
 951                 << " arg[" << cmd.argument << ']'
 952                 << " x[" << cmd.x << ']'
 953                 << " y[" << cmd.y << ']'
 954                 << " button[" << cmd.button() << ']'
 955                 << endl;
 956
 957         LCursor & cur = bv_->cursor();
 958
 959         switch (cmd.action) {
 960
 961         case LFUN_UNDO:
 962                 if (available()) {
 963                         cur.message(_("Undo"));
 964                         cur.clearSelection();
 965                         if (!textUndo(*bv_))
 966                                 cur.message(_("No further undo information"));
 967                         update();
 968                         switchKeyMap();
 969                 }
 970                 break;
 971
 972         case LFUN_REDO:
 973                 if (available()) {
 974                         cur.message(_("Redo"));
 975                         cur.clearSelection();
 976                         if (!textRedo(*bv_))
 977                                 cur.message(_("No further redo information"));
 978                         update();
 979                         switchKeyMap();
 980                 }
 981                 break;
 982
 983         case LFUN_FILE_INSERT:
 984                 MenuInsertLyXFile(cmd.argument);
 985                 break;
 986
 987         case LFUN_FILE_INSERT_ASCII_PARA:
 988                 InsertAsciiFile(bv_, cmd.argument, true);
 989                 break;
 990
 991         case LFUN_FILE_INSERT_ASCII:
 992                 InsertAsciiFile(bv_, cmd.argument, false);
 993                 break;
 994
 995         case LFUN_FONT_STATE:
 996                 cur.message(cur.currentState());
 997                 break;
 998
 999         case LFUN_INSERT_LABEL: {
1000                 // Try and generate a valid label
1001                 string const contents = cmd.argument.empty() ?
1002                         cur.getPossibleLabel() : cmd.argument;
1003                 InsetCommandParams icp("label", contents);
1004                 string data = InsetCommandMailer::params2string("label", icp);
1005                 owner_->getDialogs().show("label", data, 0);
1006                 break;
1007         }
1008
1009         case LFUN_BOOKMARK_SAVE:
1010                 savePosition(strToUnsignedInt(cmd.argument));
1011                 break;
1012
1013         case LFUN_BOOKMARK_GOTO:
1014                 restorePosition(strToUnsignedInt(cmd.argument));
1015                 break;
1016
1017         case LFUN_REF_GOTO: {
1018                 string label = cmd.argument;
1019                 if (label.empty()) {
1020                         InsetRef * inset =
1021                                 static_cast<InsetRef*>(getInsetByCode(InsetBase::REF_CODE));
1022                         if (inset) {
1023                                 label = inset->getContents();
1024                                 savePosition(0);
1025                         }
1026                 }
1027
1028                 if (!label.empty())
1029                         bv_->gotoLabel(label);
1030                 break;
1031         }
1032
1033         case LFUN_TRACK_CHANGES:
1034                 trackChanges();
1035                 break;
1036
1037         case LFUN_MERGE_CHANGES:
1038                 owner_->getDialogs().show("changes");
1039                 break;
1040
1041         case LFUN_ACCEPT_ALL_CHANGES: {
1042                 bv_->cursor().reset(bv_->buffer()->inset());
1043 #warning FIXME changes
1044                 while (lyx::find::findNextChange(bv_))
1045                         bv_->getLyXText()->acceptChange(bv_->cursor());
1046                 update();
1047                 break;
1048         }
1049
1050         case LFUN_REJECT_ALL_CHANGES: {
1051                 bv_->cursor().reset(bv_->buffer()->inset());
1052 #warning FIXME changes
1053                 while (lyx::find::findNextChange(bv_))
1054                         bv_->getLyXText()->rejectChange(bv_->cursor());
1055                 update();
1056                 break;
1057         }
1058
1059         case LFUN_WORD_FIND:
1060                 lyx::find::find(bv_, cmd);
1061                 break;
1062
1063         case LFUN_WORD_REPLACE:
1064                 lyx::find::replace(bv_, cmd);
1065                 break;
1066
1067         case LFUN_MARK_OFF:
1068                 cur.clearSelection();
1069                 update();
1070                 cur.resetAnchor();
1071                 cur.message(N_("Mark off"));
1072                 break;
1073
1074         case LFUN_MARK_ON:
1075                 cur.clearSelection();
1076                 cur.mark() = true;
1077                 update();
1078                 cur.resetAnchor();
1079                 cur.message(N_("Mark on"));
1080                 break;
1081
1082         case LFUN_SETMARK:
1083                 cur.clearSelection();
1084                 if (cur.mark()) {
1085                         cur.mark() = false;
1086                         cur.message(N_("Mark removed"));
1087                 } else {
1088                         cur.mark() = true;
1089                         cur.message(N_("Mark set"));
1090                 }
1091                 cur.resetAnchor();
1092                 update();
1093                 break;
1094
1095         case LFUN_UNKNOWN_ACTION:
1096                 cur.errorMessage(N_("Unknown function!"));
1097                 break;
1098
1099         case LFUN_CENTER:
1100                 bv_->center();
1101                 break;
1102
1103         case LFUN_BEGINNINGBUFSEL:
1104                 bv_->cursor().reset(bv_->buffer()->inset());
1105                 if (!cur.selection())
1106                         cur.resetAnchor();
1107                 bv_->text()->cursorTop(cur);
1108                 finishUndo();
1109                 break;
1110
1111         case LFUN_ENDBUFSEL:
1112                 bv_->cursor().reset(bv_->buffer()->inset());
1113                 if (!cur.selection())
1114                         cur.resetAnchor();
1115                 bv_->text()->cursorBottom(cur);
1116                 finishUndo();
1117                 break;
1118
1119         default:
1120                 return false;
1121         }
1122
1123         return true;
1124 }