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 "coordcache.h"
  27 #include "cursor.h"
  28 #include "debug.h"
  29 #include "dispatchresult.h"
  30 #include "factory.h"
  31 #include "FloatList.h"
  32 #include "funcrequest.h"
  33 #include "FuncStatus.h"
  34 #include "gettext.h"
  35 #include "intl.h"
  36 #include "insetiterator.h"
  37 #include "lyx_cb.h" // added for Dispatch functions
  38 #include "lyx_main.h"
  39 #include "lyxfind.h"
  40 #include "lyxfunc.h"
  41 #include "lyxtext.h"
  42 #include "lyxrc.h"
  43 #include "lastfiles.h"
  44 #include "paragraph.h"
  45 #include "paragraph_funcs.h"
  46 #include "ParagraphParameters.h"
  47 #include "pariterator.h"
  48 #include "rowpainter.h"
  49 #include "undo.h"
  50 #include "vspace.h"
  51
  52 #include "insets/insetref.h"
  53 #include "insets/insettext.h"
  54
  55 #include "frontends/Alert.h"
  56 #include "frontends/Dialogs.h"
  57 #include "frontends/FileDialog.h"
  58 #include "frontends/LyXView.h"
  59 #include "frontends/LyXScreenFactory.h"
  60 #include "frontends/screen.h"
  61 #include "frontends/WorkArea.h"
  62 #include "frontends/WorkAreaFactory.h"
  63
  64 #include "graphics/Previews.h"
  65
  66 #include "support/filetools.h"
  67 #include "support/forkedcontr.h"
  68 #include "support/globbing.h"
  69 #include "support/path_defines.h"
  70 #include "support/tostr.h"
  71 #include "support/types.h"
  72
  73 #include <boost/bind.hpp>
  74
  75 using lyx::pos_type;
  76
  77 using lyx::support::AddPath;
  78 using lyx::support::bformat;
  79 using lyx::support::FileFilterList;
  80 using lyx::support::FileSearch;
  81 using lyx::support::ForkedcallsController;
  82 using lyx::support::IsDirWriteable;
  83 using lyx::support::MakeDisplayPath;
  84 using lyx::support::MakeAbsPath;
  85 using lyx::support::strToUnsignedInt;
  86 using lyx::support::system_lyxdir;
  87
  88 using std::endl;
  89 using std::istringstream;
  90 using std::make_pair;
  91 using std::min;
  92 using std::string;
  93
  94
  95 extern BufferList bufferlist;
  96
  97
  98 namespace {
  99
 100 unsigned int const saved_positions_num = 20;
 101
 102 // All the below connection objects are needed because of a bug in some
 103 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
 104 // to these connections we avoid a segfault upon startup, and also at exit.
 105 // (Lgb)
 106
 107 boost::signals::connection dispatchcon;
 108 boost::signals::connection timecon;
 109 boost::signals::connection doccon;
 110 boost::signals::connection resizecon;
 111 boost::signals::connection kpresscon;
 112 boost::signals::connection selectioncon;
 113 boost::signals::connection lostcon;
 114
 115
 116 /// Get next inset of this class from current cursor position
 117 template <class T>
 118 T * getInsetByCode(LCursor & cur, InsetBase::Code code)
 119 {
 120         T * inset = 0;
 121         DocIterator it = cur;
 122         if (it.nextInset() &&
 123             it.nextInset()->lyxCode() == code) {
 124                 inset = static_cast<T*>(it.nextInset());
 125         }
 126         return inset;
 127 }
 128
 129
 130 } // anon namespace
 131
 132
 133 BufferView::Pimpl::Pimpl(BufferView & bv, LyXView * owner,
 134                          int width, int height)
 135         : bv_(&bv), owner_(owner), buffer_(0), cursor_timeout(400),
 136           using_xterm_cursor(false), cursor_(bv)
 137 {
 138         xsel_cache_.set = false;
 139
 140         workarea_.reset(WorkAreaFactory::create(*owner_, width, height));
 141         screen_.reset(LyXScreenFactory::create(workarea()));
 142
 143         // Setup the signals
 144         doccon = workarea().scrollDocView
 145                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 146         resizecon = workarea().workAreaResize
 147                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 148         dispatchcon = workarea().dispatch
 149                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 150         kpresscon = workarea().workAreaKeyPress
 151                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 152         selectioncon = workarea().selectionRequested
 153                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 154         lostcon = workarea().selectionLost
 155                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 156
 157         timecon = cursor_timeout.timeout
 158                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 159         cursor_timeout.start();
 160         saved_positions.resize(saved_positions_num);
 161 }
 162
 163
 164 void BufferView::Pimpl::addError(ErrorItem const & ei)
 165 {
 166         errorlist_.push_back(ei);
 167 }
 168
 169
 170 void BufferView::Pimpl::showReadonly(bool)
 171 {
 172         owner_->updateWindowTitle();
 173         owner_->getDialogs().updateBufferDependent(false);
 174 }
 175
 176
 177 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 178 {
 179         if (errorConnection_.connected())
 180                 disconnectBuffer();
 181
 182         errorConnection_ =
 183                 buf.error.connect(
 184                         boost::bind(&BufferView::Pimpl::addError, this, _1));
 185
 186         messageConnection_ =
 187                 buf.message.connect(
 188                         boost::bind(&LyXView::message, owner_, _1));
 189
 190         busyConnection_ =
 191                 buf.busy.connect(
 192                         boost::bind(&LyXView::busy, owner_, _1));
 193
 194         titleConnection_ =
 195                 buf.updateTitles.connect(
 196                         boost::bind(&LyXView::updateWindowTitle, owner_));
 197
 198         timerConnection_ =
 199                 buf.resetAutosaveTimers.connect(
 200                         boost::bind(&LyXView::resetAutosaveTimer, owner_));
 201
 202         readonlyConnection_ =
 203                 buf.readonly.connect(
 204                         boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 205
 206         closingConnection_ =
 207                 buf.closing.connect(
 208                         boost::bind(&BufferView::Pimpl::setBuffer, this, (Buffer *)0));
 209 }
 210
 211
 212 void BufferView::Pimpl::disconnectBuffer()
 213 {
 214         errorConnection_.disconnect();
 215         messageConnection_.disconnect();
 216         busyConnection_.disconnect();
 217         titleConnection_.disconnect();
 218         timerConnection_.disconnect();
 219         readonlyConnection_.disconnect();
 220         closingConnection_.disconnect();
 221 }
 222
 223
 224 void BufferView::Pimpl::newFile(string const & filename, string const & tname,
 225         bool isNamed)
 226 {
 227         setBuffer(::newFile(filename, tname, isNamed));
 228 }
 229
 230
 231 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 232 {
 233         // get absolute path of file and add ".lyx" to the filename if
 234         // necessary
 235         string s = FileSearch(string(), filename, "lyx");
 236
 237         bool const found = !s.empty();
 238
 239         if (!found)
 240                 s = filename;
 241
 242         // file already open?
 243         if (bufferlist.exists(s)) {
 244                 string const file = MakeDisplayPath(s, 20);
 245                 string text = bformat(_("The document %1$s is already "
 246                                         "loaded.\n\nDo you want to revert "
 247                                         "to the saved version?"), file);
 248                 int const ret = Alert::prompt(_("Revert to saved document?"),
 249                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 250
 251                 if (ret != 0) {
 252                         setBuffer(bufferlist.getBuffer(s));
 253                         return true;
 254                 }
 255                 // FIXME: should be LFUN_REVERT
 256                 if (!bufferlist.close(bufferlist.getBuffer(s), false))
 257                         return false;
 258                 // Fall through to new load. (Asger)
 259         }
 260
 261         Buffer * b;
 262
 263         if (found) {
 264                 b = bufferlist.newBuffer(s);
 265                 connectBuffer(*b);
 266                 if (!::loadLyXFile(b, s)) {
 267                         bufferlist.release(b);
 268                         return false;
 269                 }
 270         } else {
 271                 string text = bformat(_("The document %1$s does not yet "
 272                                         "exist.\n\nDo you want to create "
 273                                         "a new document?"), s);
 274                 int const ret = Alert::prompt(_("Create new document?"),
 275                          text, 0, 1, _("&Create"), _("Cancel"));
 276
 277                 if (ret == 0)
 278                         b = ::newFile(s, string(), true);
 279                 else
 280                         return false;
 281         }
 282
 283         setBuffer(b);
 284         bv_->showErrorList(_("Parse"));
 285
 286         if (tolastfiles)
 287                 LyX::ref().lastfiles().newFile(b->fileName());
 288
 289         return true;
 290 }
 291
 292
 293 WorkArea & BufferView::Pimpl::workarea() const
 294 {
 295         return *workarea_.get();
 296 }
 297
 298
 299 LyXScreen & BufferView::Pimpl::screen() const
 300 {
 301         return *screen_.get();
 302 }
 303
 304
 305 Painter & BufferView::Pimpl::painter() const
 306 {
 307         return workarea().getPainter();
 308 }
 309
 310
 311 void BufferView::Pimpl::top_y(int y)
 312 {
 313         top_y_ = y;
 314 }
 315
 316
 317 int BufferView::Pimpl::top_y() const
 318 {
 319         return top_y_;
 320 }
 321
 322
 323 void BufferView::Pimpl::setBuffer(Buffer * b)
 324 {
 325         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 326                             << b << ')' << endl;
 327         if (buffer_)
 328                 disconnectBuffer();
 329
 330         // if we are closing current buffer, switch to the first in
 331         // buffer list.
 332         if (!b) {
 333                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 334                 // we are closing the buffer, use the first buffer as current
 335                 buffer_ = bufferlist.first();
 336                 owner_->getDialogs().hideBufferDependent();
 337         } else {
 338                 // set current buffer
 339                 buffer_ = b;
 340         }
 341
 342         // reset old cursor
 343         top_y_ = 0;
 344         cursor_ = LCursor(*bv_);
 345
 346         // if we're quitting lyx, don't bother updating stuff
 347         if (quitting)
 348                 return;
 349
 350         if (buffer_) {
 351                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 352                 connectBuffer(*buffer_);
 353
 354                 cursor_.push(buffer_->inset());
 355                 cursor_.resetAnchor();
 356                 buffer_->text().init(bv_);
 357                 buffer_->text().setCurrentFont(cursor_);
 358
 359                 // If we don't have a text object for this, we make one
 360                 //if (bv_->text() == 0)
 361                 //      resizeCurrentBuffer();
 362
 363                 // Buffer-dependent dialogs should be updated or
 364                 // hidden. This should go here because some dialogs (eg ToC)
 365                 // require bv_->text.
 366                 owner_->getDialogs().updateBufferDependent(true);
 367         }
 368
 369         update();
 370         updateScrollbar();
 371         owner_->updateMenubar();
 372         owner_->updateToolbars();
 373         owner_->updateLayoutChoice();
 374         owner_->updateWindowTitle();
 375
 376         // This is done after the layout combox has been populated
 377         if (buffer_)
 378                 owner_->setLayout(cursor_.paragraph().layout()->name());
 379
 380         if (buffer_ && lyx::graphics::Previews::status() != LyXRC::PREVIEW_OFF)
 381                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 382 }
 383
 384
 385 bool BufferView::Pimpl::fitCursor()
 386 {
 387         // to get the correct y cursor info
 388         lyxerr[Debug::DEBUG] << "BufferView::fitCursor" << std::endl;
 389         lyx::par_type const pit = bv_->cursor().bottom().par();
 390         bv_->text()->redoParagraph(pit);
 391         refreshPar(*bv_, *bv_->text(), pit);
 392
 393         if (!screen().fitCursor(bv_))
 394                 return false;
 395         updateScrollbar();
 396         return true;
 397 }
 398
 399
 400 void BufferView::Pimpl::redoCurrentBuffer()
 401 {
 402         lyxerr[Debug::DEBUG] << "BufferView::redoCurrentBuffer" << endl;
 403         if (buffer_ && bv_->text()) {
 404                 resizeCurrentBuffer();
 405                 updateScrollbar();
 406                 owner_->updateLayoutChoice();
 407         }
 408 }
 409
 410
 411 void BufferView::Pimpl::resizeCurrentBuffer()
 412 {
 413         lyxerr[Debug::DEBUG] << "resizeCurrentBuffer" << endl;
 414         owner_->busy(true);
 415         owner_->message(_("Formatting document..."));
 416
 417         LyXText * text = bv_->text();
 418         if (!text)
 419                 return;
 420
 421         text->init(bv_);
 422         update();
 423         fitCursor();
 424
 425         switchKeyMap();
 426         owner_->busy(false);
 427
 428         // reset the "Formatting..." message
 429         owner_->clearMessage();
 430
 431         updateScrollbar();
 432 }
 433
 434
 435 void BufferView::Pimpl::updateScrollbar()
 436 {
 437         if (!bv_->text()) {
 438                 lyxerr[Debug::DEBUG] << "no text in updateScrollbar" << endl;
 439                 workarea().setScrollbarParams(0, 0, 0);
 440                 return;
 441         }
 442
 443         LyXText const & t = *bv_->text();
 444
 445         lyxerr[Debug::GUI]
 446                 << "Updating scrollbar: height: " << t.height()
 447                 << " top_y: " << top_y()
 448                 << " default height " << defaultRowHeight() << endl;
 449
 450         workarea().setScrollbarParams(t.height(), top_y(), defaultRowHeight());
 451 }
 452
 453
 454 void BufferView::Pimpl::scrollDocView(int value)
 455 {
 456         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 457
 458         if (!buffer_)
 459                 return;
 460
 461         screen().hideCursor();
 462
 463         top_y(value);
 464         screen().redraw(*bv_);
 465
 466         if (!lyxrc.cursor_follows_scrollbar)
 467                 return;
 468
 469         int const height = defaultRowHeight();
 470         int const first = top_y() + height;
 471         int const last = top_y() + workarea().workHeight() - height;
 472
 473         bv_->cursor().reset(bv_->buffer()->inset());
 474         LyXText * text = bv_->text();
 475         int y = text->cursorY(bv_->cursor().front());
 476         if (y < first)
 477                 y = first;
 478         if (y > last)
 479                 y = last;
 480         text->setCursorFromCoordinates(bv_->cursor(), 0, y);
 481
 482         owner_->updateLayoutChoice();
 483 }
 484
 485
 486 void BufferView::Pimpl::scroll(int lines)
 487 {
 488         if (!buffer_)
 489                 return;
 490
 491         LyXText const * t = bv_->text();
 492         int const line_height = defaultRowHeight();
 493
 494         // The new absolute coordinate
 495         int new_top_y = top_y() + lines * line_height;
 496
 497         // Restrict to a valid value
 498         new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
 499         new_top_y = std::max(0, new_top_y);
 500
 501         scrollDocView(new_top_y);
 502
 503         // Update the scrollbar.
 504         workarea().setScrollbarParams(t->height(), top_y(), defaultRowHeight());
 505 }
 506
 507
 508 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 509                                          key_modifier::state state)
 510 {
 511         bv_->owner()->getLyXFunc().processKeySym(key, state);
 512
 513         /* This is perhaps a bit of a hack. When we move
 514          * around, or type, it's nice to be able to see
 515          * the cursor immediately after the keypress. So
 516          * we reset the toggle timeout and force the visibility
 517          * of the cursor. Note we cannot do this inside
 518          * dispatch() itself, because that's called recursively.
 519          */
 520         if (available()) {
 521                 cursor_timeout.restart();
 522                 screen().showCursor(*bv_);
 523         }
 524 }
 525
 526
 527 void BufferView::Pimpl::selectionRequested()
 528 {
 529         static string sel;
 530
 531         if (!available())
 532                 return;
 533
 534         LCursor & cur = bv_->cursor();
 535
 536         if (!cur.selection()) {
 537                 xsel_cache_.set = false;
 538                 return;
 539         }
 540
 541         if (!xsel_cache_.set ||
 542             cur.back() != xsel_cache_.cursor ||
 543             cur.anchor_.back() != xsel_cache_.anchor)
 544         {
 545                 xsel_cache_.cursor = cur.back();
 546                 xsel_cache_.anchor = cur.anchor_.back();
 547                 xsel_cache_.set = cur.selection();
 548                 sel = cur.selectionAsString(false);
 549                 if (!sel.empty())
 550                         workarea().putClipboard(sel);
 551         }
 552 }
 553
 554
 555 void BufferView::Pimpl::selectionLost()
 556 {
 557         if (available()) {
 558                 screen().hideCursor();
 559                 bv_->cursor().clearSelection();
 560                 xsel_cache_.set = false;
 561         }
 562 }
 563
 564
 565 void BufferView::Pimpl::workAreaResize()
 566 {
 567         static int work_area_width;
 568         static int work_area_height;
 569
 570         bool const widthChange = workarea().workWidth() != work_area_width;
 571         bool const heightChange = workarea().workHeight() != work_area_height;
 572
 573         // update from work area
 574         work_area_width = workarea().workWidth();
 575         work_area_height = workarea().workHeight();
 576
 577         if (buffer_ && widthChange) {
 578                 // The visible LyXView need a resize
 579                 resizeCurrentBuffer();
 580         }
 581
 582         if (widthChange || heightChange)
 583                 update();
 584
 585         // always make sure that the scrollbar is sane.
 586         updateScrollbar();
 587         owner_->updateLayoutChoice();
 588 }
 589
 590
 591 void BufferView::Pimpl::update()
 592 {
 593         //lyxerr << "BufferView::Pimpl::update(), buffer: " << buffer_ << endl;
 594         // fix cursor coordinate cache in case something went wrong
 595
 596         // check needed to survive LyX startup
 597         if (buffer_) {
 598                 // update macro store
 599                 buffer_->buildMacros();
 600
 601                 // update all 'visible' paragraphs
 602                 lyx::par_type beg, end;
 603                 getParsInRange(buffer_->paragraphs(),
 604                                top_y(), top_y() + workarea().workHeight(),
 605                                beg, end);
 606                 bv_->text()->redoParagraphs(beg, end);
 607
 608                 // and the scrollbar
 609                 updateScrollbar();
 610         }
 611
 612         // remove old position cache
 613         theCoords.clear();
 614
 615         // The real, big redraw.
 616         screen().redraw(*bv_);
 617
 618         bv_->owner()->view_state_changed();
 619 }
 620
 621
 622 // Callback for cursor timer
 623 void BufferView::Pimpl::cursorToggle()
 624 {
 625         if (buffer_) {
 626                 screen().toggleCursor(*bv_);
 627
 628                 // Use this opportunity to deal with any child processes that
 629                 // have finished but are waiting to communicate this fact
 630                 // to the rest of LyX.
 631                 ForkedcallsController & fcc = ForkedcallsController::get();
 632                 if (fcc.processesCompleted())
 633                         fcc.handleCompletedProcesses();
 634         }
 635
 636         cursor_timeout.restart();
 637 }
 638
 639
 640 bool BufferView::Pimpl::available() const
 641 {
 642         return buffer_ && bv_->text();
 643 }
 644
 645
 646 Change const BufferView::Pimpl::getCurrentChange()
 647 {
 648         if (!bv_->buffer()->params().tracking_changes)
 649                 return Change(Change::UNCHANGED);
 650
 651         LyXText * text = bv_->getLyXText();
 652         LCursor & cur = bv_->cursor();
 653
 654         if (!cur.selection())
 655                 return Change(Change::UNCHANGED);
 656
 657         return text->getPar(cur.selBegin().par()).
 658                         lookupChangeFull(cur.selBegin().pos());
 659 }
 660
 661
 662 void BufferView::Pimpl::savePosition(unsigned int i)
 663 {
 664         if (i >= saved_positions_num)
 665                 return;
 666         BOOST_ASSERT(bv_->cursor().inTexted());
 667         saved_positions[i] = Position(buffer_->fileName(),
 668                                       bv_->cursor().paragraph().id(),
 669                                       bv_->cursor().pos());
 670         if (i > 0)
 671                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 672 }
 673
 674
 675 void BufferView::Pimpl::restorePosition(unsigned int i)
 676 {
 677         if (i >= saved_positions_num)
 678                 return;
 679
 680         string const fname = saved_positions[i].filename;
 681
 682         bv_->cursor().clearSelection();
 683
 684         if (fname != buffer_->fileName()) {
 685                 Buffer * b = 0;
 686                 if (bufferlist.exists(fname))
 687                         b = bufferlist.getBuffer(fname);
 688                 else {
 689                         b = bufferlist.newBuffer(fname);
 690                         ::loadLyXFile(b, fname); // don't ask, just load it
 691                 }
 692                 if (b)
 693                         setBuffer(b);
 694         }
 695
 696         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 697         if (par == buffer_->par_iterator_end())
 698                 return;
 699
 700         bv_->text()->setCursor(bv_->cursor(), par.pit(),
 701                 min(par->size(), saved_positions[i].par_pos));
 702
 703         if (i > 0)
 704                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 705 }
 706
 707
 708 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 709 {
 710         return i < saved_positions_num && !saved_positions[i].filename.empty();
 711 }
 712
 713
 714 void BufferView::Pimpl::switchKeyMap()
 715 {
 716         if (!lyxrc.rtl_support)
 717                 return;
 718
 719         Intl & intl = owner_->getIntl();
 720         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 721                 if (intl.keymap == Intl::PRIMARY)
 722                         intl.KeyMapSec();
 723         } else {
 724                 if (intl.keymap == Intl::SECONDARY)
 725                         intl.KeyMapPrim();
 726         }
 727 }
 728
 729
 730 void BufferView::Pimpl::center()
 731 {
 732         LyXText * text = bv_->text();
 733
 734         bv_->cursor().clearSelection();
 735         int const half_height = workarea().workHeight() / 2;
 736         int new_y = text->cursorY(bv_->cursor().front()) - half_height;
 737         if (new_y < 0)
 738                 new_y = 0;
 739
 740         // FIXME: look at this comment again ...
 741         // This updates top_y() but means the fitCursor() call
 742         // from the update(FITCUR) doesn't realise that we might
 743         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 744         // the scrollbar to be updated as it should, so we have
 745         // to do it manually. Any operation that does a center()
 746         // and also might have moved top_y() must make sure to call
 747         // updateScrollbar() currently. Never mind that this is a
 748         // pretty obfuscated way of updating text->top_y()
 749         top_y(new_y);
 750 }
 751
 752
 753 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 754 {
 755         workarea().putClipboard(stuff);
 756 }
 757
 758
 759 void BufferView::Pimpl::MenuInsertLyXFile(string const & filenm)
 760 {
 761         string filename = filenm;
 762
 763         if (filename.empty()) {
 764                 // Launch a file browser
 765                 string initpath = lyxrc.document_path;
 766
 767                 if (available()) {
 768                         string const trypath = owner_->buffer()->filePath();
 769                         // If directory is writeable, use this as default.
 770                         if (IsDirWriteable(trypath))
 771                                 initpath = trypath;
 772                 }
 773
 774                 FileDialog fileDlg(_("Select LyX document to insert"),
 775                         LFUN_FILE_INSERT,
 776                         make_pair(string(_("Documents|#o#O")),
 777                                   string(lyxrc.document_path)),
 778                         make_pair(string(_("Examples|#E#e")),
 779                                   string(AddPath(system_lyxdir(), "examples"))));
 780
 781                 FileDialog::Result result =
 782                         fileDlg.open(initpath,
 783                                      FileFilterList(_("LyX Documents (*.lyx)")),
 784                                      string());
 785
 786                 if (result.first == FileDialog::Later)
 787                         return;
 788
 789                 filename = result.second;
 790
 791                 // check selected filename
 792                 if (filename.empty()) {
 793                         owner_->message(_("Canceled."));
 794                         return;
 795                 }
 796         }
 797
 798         // get absolute path of file and add ".lyx" to the filename if
 799         // necessary
 800         filename = FileSearch(string(), filename, "lyx");
 801
 802         string const disp_fn = MakeDisplayPath(filename);
 803         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 804
 805         bv_->cursor().clearSelection();
 806         bv_->text()->breakParagraph(bv_->cursor());
 807
 808         BOOST_ASSERT(bv_->cursor().inTexted());
 809
 810         string const fname = MakeAbsPath(filename);
 811         bool const res = bv_->buffer()->readFile(fname, bv_->cursor().par());
 812         bv_->resize();
 813
 814         string s = res ? _("Document %1$s inserted.")
 815                        : _("Could not insert document %1$s");
 816         owner_->message(bformat(s, disp_fn));
 817 }
 818
 819
 820 void BufferView::Pimpl::trackChanges()
 821 {
 822         Buffer * buf = bv_->buffer();
 823         bool const tracking = buf->params().tracking_changes;
 824
 825         if (!tracking) {
 826                 ParIterator const end = buf->par_iterator_end();
 827                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 828                         it->trackChanges();
 829                 buf->params().tracking_changes = true;
 830
 831                 // we cannot allow undos beyond the freeze point
 832                 buf->undostack().clear();
 833         } else {
 834                 update();
 835                 bv_->text()->setCursor(bv_->cursor(), 0, 0);
 836 #ifdef WITH_WARNINGS
 837 #warning changes FIXME
 838 #endif
 839                 bool found = lyx::find::findNextChange(bv_);
 840                 if (found) {
 841                         owner_->getDialogs().show("changes");
 842                         return;
 843                 }
 844
 845                 ParIterator const end = buf->par_iterator_end();
 846                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 847                         it->untrackChanges();
 848                 buf->params().tracking_changes = false;
 849         }
 850
 851         buf->redostack().clear();
 852 }
 853
 854
 855 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd0)
 856 {
 857         lyxerr << "BufferView::Pimpl::workAreaDispatch: request: "
 858           << cmd0 << std::endl;
 859         // this is only called for mouse related events including
 860         // LFUN_FILE_OPEN generated by drag-and-drop.
 861         FuncRequest cmd = cmd0;
 862
 863         // handle drag&drop
 864         if (cmd.action == LFUN_FILE_OPEN) {
 865                 owner_->dispatch(cmd);
 866                 return true;
 867         }
 868
 869         cmd.y += bv_->top_y();
 870         if (!bv_->buffer())
 871                 return false;
 872
 873         LCursor cur(*bv_);
 874         cur.push(bv_->buffer()->inset());
 875         cur.selection() = bv_->cursor().selection();
 876
 877         // Doesn't go through lyxfunc, so we need to update
 878         // the layout choice etc. ourselves
 879
 880         // e.g. Qt mouse press when no buffer
 881         if (!available())
 882                 return false;
 883
 884         screen().hideCursor();
 885
 886         // Either the inset under the cursor or the
 887         // surrounding LyXText will handle this event.
 888
 889         // Build temporary cursor.
 890         InsetBase * inset = bv_->text()->editXY(cur, cmd.x, cmd.y);
 891         lyxerr << " * created temp cursor: " << inset << endl;
 892         lyxerr << " * hit inset at tip: " << inset << endl;
 893         lyxerr << " * created temp cursor:" << cur << endl;
 894
 895         // Put anchor at the same position.
 896         cur.resetAnchor();
 897
 898         // Try to dispatch to an non-editable inset near this position
 899         // via the temp cursor. If the inset wishes to change the real
 900         // cursor it has to do so explicitly by using
 901         //  cur.bv().cursor() = cur;  (or similar)
 902         if (inset)
 903                 inset->dispatch(cur, cmd);
 904
 905         // Now dispatch to the temporary cursor. If the real cursor should
 906         // be modified, the inset's dispatch has to do so explicitly.
 907         if (!cur.result().dispatched())
 908                 cur.dispatch(cmd);
 909
 910         if (cur.result().dispatched()) {
 911                 // Redraw if requested or necessary.
 912                 if (fitCursor() || cur.result().update())
 913                         update();
 914         }
 915
 916         // see workAreaKeyPress
 917         cursor_timeout.restart();
 918         screen().showCursor(*bv_);
 919
 920         // skip these when selecting
 921         if (cmd.action != LFUN_MOUSE_MOTION) {
 922                 owner_->updateLayoutChoice();
 923                 owner_->updateToolbars();
 924         }
 925
 926         // slight hack: this is only called currently when we
 927         // clicked somewhere, so we force through the display
 928         // of the new status here.
 929         owner_->clearMessage();
 930         return true;
 931 }
 932
 933
 934 FuncStatus BufferView::Pimpl::getStatus(FuncRequest const & cmd)
 935 {
 936         Buffer * buf = bv_->buffer();
 937
 938         FuncStatus flag;
 939
 940         switch (cmd.action) {
 941
 942         case LFUN_UNDO:
 943                 flag.enabled(!buf->undostack().empty());
 944                 break;
 945         case LFUN_REDO:
 946                 flag.enabled(!buf->redostack().empty());
 947                 break;
 948         case LFUN_FILE_INSERT:
 949         case LFUN_FILE_INSERT_ASCII_PARA:
 950         case LFUN_FILE_INSERT_ASCII:
 951         case LFUN_FONT_STATE:
 952         case LFUN_INSERT_LABEL:
 953         case LFUN_BOOKMARK_SAVE:
 954         case LFUN_REF_GOTO:
 955         case LFUN_WORD_FIND:
 956         case LFUN_WORD_REPLACE:
 957         case LFUN_MARK_OFF:
 958         case LFUN_MARK_ON:
 959         case LFUN_SETMARK:
 960         case LFUN_CENTER:
 961         case LFUN_BEGINNINGBUF:
 962         case LFUN_ENDBUF:
 963         case LFUN_BEGINNINGBUFSEL:
 964         case LFUN_ENDBUFSEL:
 965                 flag.enabled(true);
 966                 break;
 967         case LFUN_BOOKMARK_GOTO:
 968                 flag.enabled(bv_->isSavedPosition(strToUnsignedInt(cmd.argument)));
 969                 break;
 970         case LFUN_TRACK_CHANGES:
 971                 flag.enabled(true);
 972                 flag.setOnOff(buf->params().tracking_changes);
 973                 break;
 974
 975         case LFUN_MERGE_CHANGES:
 976         case LFUN_ACCEPT_CHANGE: // what about these two
 977         case LFUN_REJECT_CHANGE: // what about these two
 978         case LFUN_ACCEPT_ALL_CHANGES:
 979         case LFUN_REJECT_ALL_CHANGES:
 980                 flag.enabled(buf && buf->params().tracking_changes);
 981                 break;
 982         default:
 983                 flag.enabled(false);
 984         }
 985
 986         return flag;
 987 }
 988
 989
 990
 991 bool BufferView::Pimpl::dispatch(FuncRequest const & cmd)
 992 {
 993         //lyxerr << "BufferView::Pimpl::dispatch  cmd: " << cmd << std::endl;
 994         // Make sure that the cached BufferView is correct.
 995         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
 996                 << " action[" << cmd.action << ']'
 997                 << " arg[" << cmd.argument << ']'
 998                 << " x[" << cmd.x << ']'
 999                 << " y[" << cmd.y << ']'
1000                 << " button[" << cmd.button() << ']'
1001                 << endl;
1002
1003         LCursor & cur = bv_->cursor();
1004
1005         switch (cmd.action) {
1006
1007         case LFUN_UNDO:
1008                 if (available()) {
1009                         cur.message(_("Undo"));
1010                         cur.clearSelection();
1011                         if (!textUndo(*bv_))
1012                                 cur.message(_("No further undo information"));
1013                         update();
1014                         switchKeyMap();
1015                 }
1016                 break;
1017
1018         case LFUN_REDO:
1019                 if (available()) {
1020                         cur.message(_("Redo"));
1021                         cur.clearSelection();
1022                         if (!textRedo(*bv_))
1023                                 cur.message(_("No further redo information"));
1024                         update();
1025                         switchKeyMap();
1026                 }
1027                 break;
1028
1029         case LFUN_FILE_INSERT:
1030                 MenuInsertLyXFile(cmd.argument);
1031                 break;
1032
1033         case LFUN_FILE_INSERT_ASCII_PARA:
1034                 InsertAsciiFile(bv_, cmd.argument, true);
1035                 break;
1036
1037         case LFUN_FILE_INSERT_ASCII:
1038                 InsertAsciiFile(bv_, cmd.argument, false);
1039                 break;
1040
1041         case LFUN_FONT_STATE:
1042                 cur.message(cur.currentState());
1043                 break;
1044
1045         case LFUN_BOOKMARK_SAVE:
1046                 savePosition(strToUnsignedInt(cmd.argument));
1047                 break;
1048
1049         case LFUN_BOOKMARK_GOTO:
1050                 restorePosition(strToUnsignedInt(cmd.argument));
1051                 break;
1052
1053         case LFUN_REF_GOTO: {
1054                 string label = cmd.argument;
1055                 if (label.empty()) {
1056                         InsetRef * inset =
1057                                 getInsetByCode<InsetRef>(bv_->cursor(),
1058                                                          InsetBase::REF_CODE);
1059                         if (inset) {
1060                                 label = inset->getContents();
1061                                 savePosition(0);
1062                         }
1063                 }
1064
1065                 if (!label.empty())
1066                         bv_->gotoLabel(label);
1067                 break;
1068         }
1069
1070         case LFUN_TRACK_CHANGES:
1071                 trackChanges();
1072                 break;
1073
1074         case LFUN_MERGE_CHANGES:
1075                 owner_->getDialogs().show("changes");
1076                 break;
1077
1078         case LFUN_ACCEPT_ALL_CHANGES: {
1079                 bv_->cursor().reset(bv_->buffer()->inset());
1080 #ifdef WITH_WARNINGS
1081 #warning FIXME changes
1082 #endif
1083                 while (lyx::find::findNextChange(bv_))
1084                         bv_->getLyXText()->acceptChange(bv_->cursor());
1085                 update();
1086                 break;
1087         }
1088
1089         case LFUN_REJECT_ALL_CHANGES: {
1090                 bv_->cursor().reset(bv_->buffer()->inset());
1091 #ifdef WITH_WARNINGS
1092 #warning FIXME changes
1093 #endif
1094                 while (lyx::find::findNextChange(bv_))
1095                         bv_->getLyXText()->rejectChange(bv_->cursor());
1096                 break;
1097         }
1098
1099         case LFUN_WORD_FIND:
1100                 lyx::find::find(bv_, cmd);
1101                 break;
1102
1103         case LFUN_WORD_REPLACE:
1104                 lyx::find::replace(bv_, cmd);
1105                 break;
1106
1107         case LFUN_MARK_OFF:
1108                 cur.clearSelection();
1109                 cur.resetAnchor();
1110                 cur.message(N_("Mark off"));
1111                 break;
1112
1113         case LFUN_MARK_ON:
1114                 cur.clearSelection();
1115                 cur.mark() = true;
1116                 cur.resetAnchor();
1117                 cur.message(N_("Mark on"));
1118                 break;
1119
1120         case LFUN_SETMARK:
1121                 cur.clearSelection();
1122                 if (cur.mark()) {
1123                         cur.mark() = false;
1124                         cur.message(N_("Mark removed"));
1125                 } else {
1126                         cur.mark() = true;
1127                         cur.message(N_("Mark set"));
1128                 }
1129                 cur.resetAnchor();
1130                 break;
1131
1132         case LFUN_CENTER:
1133                 bv_->center();
1134                 break;
1135
1136         case LFUN_BEGINNINGBUFSEL:
1137                 bv_->cursor().reset(bv_->buffer()->inset());
1138                 if (!cur.selection())
1139                         cur.resetAnchor();
1140                 bv_->text()->cursorTop(cur);
1141                 finishUndo();
1142                 break;
1143
1144         case LFUN_ENDBUFSEL:
1145                 bv_->cursor().reset(bv_->buffer()->inset());
1146                 if (!cur.selection())
1147                         cur.resetAnchor();
1148                 bv_->text()->cursorBottom(cur);
1149                 finishUndo();
1150                 break;
1151
1152         default:
1153                 return false;
1154         }
1155
1156         return true;
1157 }