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 "LaTeXFeatures.h"
  38 #include "lyx_cb.h" // added for Dispatch functions
  39 #include "lyx_main.h"
  40 #include "lyxfind.h"
  41 #include "lyxfunc.h"
  42 #include "lyxtext.h"
  43 #include "lyxrc.h"
  44 #include "lastfiles.h"
  45 #include "metricsinfo.h"
  46 #include "paragraph.h"
  47 #include "paragraph_funcs.h"
  48 #include "ParagraphParameters.h"
  49 #include "pariterator.h"
  50 #include "rowpainter.h"
  51 #include "undo.h"
  52 #include "vspace.h"
  53
  54 #include "insets/insetref.h"
  55 #include "insets/insettext.h"
  56
  57 #include "frontends/Alert.h"
  58 #include "frontends/Dialogs.h"
  59 #include "frontends/FileDialog.h"
  60 #include "frontends/font_metrics.h"
  61 #include "frontends/LyXView.h"
  62 #include "frontends/LyXScreenFactory.h"
  63 #include "frontends/screen.h"
  64 #include "frontends/WorkArea.h"
  65 #include "frontends/WorkAreaFactory.h"
  66
  67 #include "graphics/Previews.h"
  68
  69 #include "support/convert.h"
  70 #include "support/filefilterlist.h"
  71 #include "support/filetools.h"
  72 #include "support/forkedcontr.h"
  73 #include "support/package.h"
  74 #include "support/types.h"
  75
  76 #include <boost/bind.hpp>
  77
  78 #include <functional>
  79 #include <vector>
  80
  81 using lyx::pos_type;
  82
  83 using lyx::support::AddPath;
  84 using lyx::support::bformat;
  85 using lyx::support::FileFilterList;
  86 using lyx::support::FileSearch;
  87 using lyx::support::ForkedcallsController;
  88 using lyx::support::IsDirWriteable;
  89 using lyx::support::MakeDisplayPath;
  90 using lyx::support::MakeAbsPath;
  91 using lyx::support::package;
  92
  93 using std::endl;
  94 using std::istringstream;
  95 using std::make_pair;
  96 using std::min;
  97 using std::max;
  98 using std::string;
  99 using std::mem_fun_ref;
 100 using std::vector;
 101
 102
 103 extern BufferList bufferlist;
 104
 105
 106 namespace {
 107
 108 unsigned int const saved_positions_num = 20;
 109
 110 // All the below connection objects are needed because of a bug in some
 111 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
 112 // to these connections we avoid a segfault upon startup, and also at exit.
 113 // (Lgb)
 114
 115 boost::signals::connection dispatchcon;
 116 boost::signals::connection timecon;
 117 boost::signals::connection doccon;
 118 boost::signals::connection resizecon;
 119 boost::signals::connection kpresscon;
 120 boost::signals::connection selectioncon;
 121 boost::signals::connection lostcon;
 122
 123
 124 /// Get next inset of this class from current cursor position
 125 template <class T>
 126 T * getInsetByCode(LCursor & cur, InsetBase::Code code)
 127 {
 128         T * inset = 0;
 129         DocIterator it = cur;
 130         if (it.nextInset() &&
 131             it.nextInset()->lyxCode() == code) {
 132                 inset = static_cast<T*>(it.nextInset());
 133         }
 134         return inset;
 135 }
 136
 137 } // anon namespace
 138
 139
 140 BufferView::Pimpl::Pimpl(BufferView & bv, LyXView * owner,
 141                          int width, int height)
 142         : bv_(&bv), owner_(owner), buffer_(0), cursor_timeout(400),
 143           using_xterm_cursor(false), cursor_(bv) ,
 144           anchor_ref_(0), offset_ref_(0)
 145 {
 146         xsel_cache_.set = false;
 147
 148         workarea_.reset(WorkAreaFactory::create(*owner_, width, height));
 149         screen_.reset(LyXScreenFactory::create(workarea()));
 150
 151         // Setup the signals
 152         doccon = workarea().scrollDocView
 153                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 154         resizecon = workarea().workAreaResize
 155                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 156         dispatchcon = workarea().dispatch
 157                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 158         kpresscon = workarea().workAreaKeyPress
 159                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 160         selectioncon = workarea().selectionRequested
 161                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 162         lostcon = workarea().selectionLost
 163                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 164
 165         timecon = cursor_timeout.timeout
 166                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 167         cursor_timeout.start();
 168         saved_positions.resize(saved_positions_num);
 169 }
 170
 171
 172 void BufferView::Pimpl::addError(ErrorItem const & ei)
 173 {
 174         errorlist_.push_back(ei);
 175 }
 176
 177
 178 void BufferView::Pimpl::showReadonly(bool)
 179 {
 180         owner_->updateWindowTitle();
 181         owner_->getDialogs().updateBufferDependent(false);
 182 }
 183
 184
 185 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 186 {
 187         if (errorConnection_.connected())
 188                 disconnectBuffer();
 189
 190         errorConnection_ =
 191                 buf.error.connect(
 192                         boost::bind(&BufferView::Pimpl::addError, this, _1));
 193
 194         messageConnection_ =
 195                 buf.message.connect(
 196                         boost::bind(&LyXView::message, owner_, _1));
 197
 198         busyConnection_ =
 199                 buf.busy.connect(
 200                         boost::bind(&LyXView::busy, owner_, _1));
 201
 202         titleConnection_ =
 203                 buf.updateTitles.connect(
 204                         boost::bind(&LyXView::updateWindowTitle, owner_));
 205
 206         timerConnection_ =
 207                 buf.resetAutosaveTimers.connect(
 208                         boost::bind(&LyXView::resetAutosaveTimer, owner_));
 209
 210         readonlyConnection_ =
 211                 buf.readonly.connect(
 212                         boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 213
 214         closingConnection_ =
 215                 buf.closing.connect(
 216                         boost::bind(&BufferView::Pimpl::setBuffer, this, (Buffer *)0));
 217 }
 218
 219
 220 void BufferView::Pimpl::disconnectBuffer()
 221 {
 222         errorConnection_.disconnect();
 223         messageConnection_.disconnect();
 224         busyConnection_.disconnect();
 225         titleConnection_.disconnect();
 226         timerConnection_.disconnect();
 227         readonlyConnection_.disconnect();
 228         closingConnection_.disconnect();
 229 }
 230
 231
 232 void BufferView::Pimpl::newFile(string const & filename, string const & tname,
 233         bool isNamed)
 234 {
 235         setBuffer(::newFile(filename, tname, isNamed));
 236 }
 237
 238
 239 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 240 {
 241         // Get absolute path of file and add ".lyx"
 242         // to the filename if necessary
 243         string s = FileSearch(string(), filename, "lyx");
 244
 245         bool const found = !s.empty();
 246
 247         if (!found)
 248                 s = filename;
 249
 250         // File already open?
 251         if (bufferlist.exists(s)) {
 252                 string const file = MakeDisplayPath(s, 20);
 253                 string text = bformat(_("The document %1$s is already "
 254                                         "loaded.\n\nDo you want to revert "
 255                                         "to the saved version?"), file);
 256                 int const ret = Alert::prompt(_("Revert to saved document?"),
 257                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 258
 259                 if (ret != 0) {
 260                         setBuffer(bufferlist.getBuffer(s));
 261                         return true;
 262                 }
 263                 // FIXME: should be LFUN_REVERT
 264                 if (!bufferlist.close(bufferlist.getBuffer(s), false))
 265                         return false;
 266                 // Fall through to new load. (Asger)
 267         }
 268
 269         Buffer * b;
 270
 271         if (found) {
 272                 b = bufferlist.newBuffer(s);
 273                 connectBuffer(*b);
 274                 if (!::loadLyXFile(b, s)) {
 275                         bufferlist.release(b);
 276                         return false;
 277                 }
 278         } else {
 279                 string text = bformat(_("The document %1$s does not yet "
 280                                         "exist.\n\nDo you want to create "
 281                                         "a new document?"), s);
 282                 int const ret = Alert::prompt(_("Create new document?"),
 283                          text, 0, 1, _("&Create"), _("Cancel"));
 284
 285                 if (ret == 0)
 286                         b = ::newFile(s, string(), true);
 287                 else
 288                         return false;
 289         }
 290
 291         setBuffer(b);
 292         bv_->showErrorList(_("Parse"));
 293
 294         if (tolastfiles)
 295                 LyX::ref().lastfiles().newFile(b->fileName());
 296
 297         return true;
 298 }
 299
 300
 301 WorkArea & BufferView::Pimpl::workarea() const
 302 {
 303         return *workarea_.get();
 304 }
 305
 306
 307 LyXScreen & BufferView::Pimpl::screen() const
 308 {
 309         return *screen_.get();
 310 }
 311
 312
 313 Painter & BufferView::Pimpl::painter() const
 314 {
 315         return workarea().getPainter();
 316 }
 317
 318
 319 void BufferView::Pimpl::setBuffer(Buffer * b)
 320 {
 321         lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 322                             << "[ b = " << b << "]" << endl;
 323
 324         if (buffer_)
 325                 disconnectBuffer();
 326
 327         // If we are closing current buffer, switch to the first in
 328         // buffer list.
 329         if (!b) {
 330                 lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 331                                     << " No Buffer!" << endl;
 332                 // We are closing the buffer, use the first buffer as current
 333                 buffer_ = bufferlist.first();
 334                 owner_->getDialogs().hideBufferDependent();
 335         } else {
 336                 // Set current buffer
 337                 buffer_ = b;
 338         }
 339
 340         // Reset old cursor
 341         cursor_ = LCursor(*bv_);
 342         anchor_ref_ = 0;
 343         offset_ref_ = 0;
 344
 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] << BOOST_CURRENT_FUNCTION
 352                                     << "Buffer addr: " << buffer_ << endl;
 353                 connectBuffer(*buffer_);
 354
 355                 cursor_.push(buffer_->inset());
 356                 cursor_.resetAnchor();
 357                 buffer_->text().init(bv_);
 358                 buffer_->text().setCurrentFont(cursor_);
 359
 360                 // Buffer-dependent dialogs should be updated or
 361                 // hidden. This should go here because some dialogs (eg ToC)
 362                 // require bv_->text.
 363                 owner_->getDialogs().updateBufferDependent(true);
 364         }
 365
 366         update();
 367         updateScrollbar();
 368         owner_->updateMenubar();
 369         owner_->updateToolbars();
 370         owner_->updateLayoutChoice();
 371         owner_->updateWindowTitle();
 372
 373         // This is done after the layout combox has been populated
 374         if (buffer_)
 375                 owner_->setLayout(cursor_.paragraph().layout()->name());
 376
 377         if (buffer_ && lyx::graphics::Previews::status() != LyXRC::PREVIEW_OFF)
 378                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 379 }
 380
 381
 382 void BufferView::Pimpl::resizeCurrentBuffer()
 383 {
 384         lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION << endl;
 385         owner_->busy(true);
 386         owner_->message(_("Formatting document..."));
 387
 388         LyXText * text = bv_->text();
 389         if (!text)
 390                 return;
 391
 392         text->init(bv_);
 393         update();
 394
 395         switchKeyMap();
 396         owner_->busy(false);
 397
 398         // Reset the "Formatting..." message
 399         owner_->clearMessage();
 400
 401         updateScrollbar();
 402 }
 403
 404
 405 void BufferView::Pimpl::updateScrollbar()
 406 {
 407         if (!bv_->text()) {
 408                 lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION
 409                                      << " no text in updateScrollbar" << endl;
 410                 workarea().setScrollbarParams(0, 0, 0);
 411                 return;
 412         }
 413
 414         LyXText & t = *bv_->text();
 415         if (anchor_ref_ >  int(t.paragraphs().size()) - 1) {
 416                 anchor_ref_ = int(t.paragraphs().size()) - 1;
 417                 offset_ref_ = 0;
 418         }
 419
 420         lyxerr[Debug::GUI]
 421                 << BOOST_CURRENT_FUNCTION
 422                 << " Updating scrollbar: height: " << t.paragraphs().size()
 423                 << " curr par: " << cursor_.bottom().pit()
 424                 << " default height " << defaultRowHeight() << endl;
 425
 426         // It would be better to fix the scrollbar to understand
 427         // values in [0..1] and divide everything by wh
 428         int const wh = workarea().workHeight() / 4;
 429         int const h = t.getPar(anchor_ref_).height();
 430         workarea().setScrollbarParams(t.paragraphs().size() * wh, anchor_ref_ * wh + int(offset_ref_ * wh / float(h)), int (wh * defaultRowHeight() / float(h)));
 431 //      workarea().setScrollbarParams(t.paragraphs().size(), anchor_ref_, 1);
 432 }
 433
 434
 435 void BufferView::Pimpl::scrollDocView(int value)
 436 {
 437         lyxerr[Debug::GUI] << BOOST_CURRENT_FUNCTION
 438                            << "[ value = " << value << "]" << endl;
 439
 440         if (!buffer_)
 441                 return;
 442
 443         screen().hideCursor();
 444
 445         int const wh = workarea().workHeight() / 4;
 446
 447         LyXText & t = *bv_->text();
 448
 449         float const bar = value / float(wh * t.paragraphs().size());
 450
 451         anchor_ref_ = int(bar * t.paragraphs().size());
 452         t.redoParagraph(anchor_ref_);
 453         int const h = t.getPar(anchor_ref_).height();
 454         offset_ref_ = int((bar * t.paragraphs().size() - anchor_ref_) * h);
 455         update();
 456
 457         if (!lyxrc.cursor_follows_scrollbar)
 458                 return;
 459
 460         int const height = 2 * defaultRowHeight();
 461         int const first = height;
 462         int const last = workarea().workHeight() - height;
 463         LCursor & cur = cursor_;
 464
 465         bv_funcs::CurStatus st = bv_funcs::status(bv_, cur);
 466
 467         switch (st) {
 468         case bv_funcs::CUR_ABOVE:
 469                 t.setCursorFromCoordinates(cur, 0, first);
 470                 cur.clearSelection();
 471                 break;
 472         case bv_funcs::CUR_BELOW:
 473                 t.setCursorFromCoordinates(cur, 0, last);
 474                 cur.clearSelection();
 475                 break;
 476         case bv_funcs::CUR_INSIDE:
 477                 int const y = bv_funcs::getPos(cur).y_;
 478                 int const newy = min(last, max(y, first));
 479                 if (y != newy) {
 480                         cur.reset(buffer_->inset());
 481                         t.setCursorFromCoordinates(cur, 0, newy);
 482                 }
 483         }
 484         owner_->updateLayoutChoice();
 485 }
 486
 487
 488 void BufferView::Pimpl::scroll(int /*lines*/)
 489 {
 490 //      if (!buffer_)
 491 //              return;
 492 //
 493 //      LyXText const * t = bv_->text();
 494 //      int const line_height = defaultRowHeight();
 495 //
 496 //      // The new absolute coordinate
 497 //      int new_top_y = top_y() + lines * line_height;
 498 //
 499 //      // Restrict to a valid value
 500 //      new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
 501 //      new_top_y = std::max(0, new_top_y);
 502 //
 503 //      scrollDocView(new_top_y);
 504 //
 505 //      // Update the scrollbar.
 506 //      workarea().setScrollbarParams(t->height(), top_y(), defaultRowHeight());
 507 }
 508
 509
 510 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 511                                          key_modifier::state state)
 512 {
 513         owner_->getLyXFunc().processKeySym(key, state);
 514
 515         /* This is perhaps a bit of a hack. When we move
 516          * around, or type, it's nice to be able to see
 517          * the cursor immediately after the keypress. So
 518          * we reset the toggle timeout and force the visibility
 519          * of the cursor. Note we cannot do this inside
 520          * dispatch() itself, because that's called recursively.
 521          */
 522         if (available()) {
 523                 cursor_timeout.restart();
 524                 screen().showCursor(*bv_);
 525         }
 526 }
 527
 528
 529 void BufferView::Pimpl::selectionRequested()
 530 {
 531         static string sel;
 532
 533         if (!available())
 534                 return;
 535
 536         LCursor & cur = cursor_;
 537
 538         if (!cur.selection()) {
 539                 xsel_cache_.set = false;
 540                 return;
 541         }
 542
 543         if (!xsel_cache_.set ||
 544             cur.top() != xsel_cache_.cursor ||
 545             cur.anchor_.top() != xsel_cache_.anchor)
 546         {
 547                 xsel_cache_.cursor = cur.top();
 548                 xsel_cache_.anchor = cur.anchor_.top();
 549                 xsel_cache_.set = cur.selection();
 550                 sel = cur.selectionAsString(false);
 551                 if (!sel.empty())
 552                         workarea().putClipboard(sel);
 553         }
 554 }
 555
 556
 557 void BufferView::Pimpl::selectionLost()
 558 {
 559         if (available()) {
 560                 screen().hideCursor();
 561                 cursor_.clearSelection();
 562                 xsel_cache_.set = false;
 563         }
 564 }
 565
 566
 567 void BufferView::Pimpl::workAreaResize()
 568 {
 569         static int work_area_width;
 570         static int work_area_height;
 571
 572         bool const widthChange = workarea().workWidth() != work_area_width;
 573         bool const heightChange = workarea().workHeight() != work_area_height;
 574
 575         // Update from work area
 576         work_area_width = workarea().workWidth();
 577         work_area_height = workarea().workHeight();
 578
 579         if (buffer_ && widthChange) {
 580                 // The visible LyXView need a resize
 581                 resizeCurrentBuffer();
 582         }
 583
 584         if (widthChange || heightChange)
 585                 update();
 586
 587         // Always make sure that the scrollbar is sane.
 588         updateScrollbar();
 589         owner_->updateLayoutChoice();
 590 }
 591
 592
 593 bool BufferView::Pimpl::fitCursor()
 594 {
 595         if (bv_funcs::status(bv_, cursor_) == bv_funcs::CUR_INSIDE) {
 596                 LyXFont const font = cursor_.getFont();
 597                 int const asc = font_metrics::maxAscent(font);
 598                 int const des = font_metrics::maxDescent(font);
 599                 Point p = bv_funcs::getPos(cursor_);
 600                 if (p.y_ - asc >= 0 && p.y_ + des < workarea().workHeight())
 601                         return false;
 602         }
 603         center();
 604         return true;
 605 }
 606
 607
 608 void BufferView::Pimpl::update(bool fitcursor, bool forceupdate)
 609 {
 610         lyxerr << BOOST_CURRENT_FUNCTION
 611                << "[fitcursor = " << fitcursor << ','
 612                << " forceupdate = " << forceupdate
 613                << "]  buffer: " << buffer_ << endl;
 614
 615         // Check needed to survive LyX startup
 616         if (buffer_) {
 617                 // Update macro store
 618                 buffer_->buildMacros();
 619                 // First drawing step
 620
 621                 CoordCache backup;
 622                 std::swap(theCoords, backup);
 623                 theCoords.startUpdating();
 624
 625                 ViewMetricsInfo vi = metrics();
 626
 627                 if (fitcursor && fitCursor()) {
 628                         forceupdate = true;
 629                         vi = metrics();
 630                 }
 631                 if (forceupdate) {
 632                         // Second drawing step
 633                         screen().redraw(*bv_, vi);
 634                 } else {
 635                         // Abort updating of the coord cache - just restore the old one
 636                         std::swap(theCoords, backup);
 637                 }
 638         } else
 639                 screen().greyOut();
 640
 641         // And the scrollbar
 642         updateScrollbar();
 643         owner_->view_state_changed();
 644 }
 645
 646
 647 // Callback for cursor timer
 648 void BufferView::Pimpl::cursorToggle()
 649 {
 650         if (buffer_) {
 651                 screen().toggleCursor(*bv_);
 652
 653                 // Use this opportunity to deal with any child processes that
 654                 // have finished but are waiting to communicate this fact
 655                 // to the rest of LyX.
 656                 ForkedcallsController & fcc = ForkedcallsController::get();
 657                 if (fcc.processesCompleted())
 658                         fcc.handleCompletedProcesses();
 659         }
 660
 661         cursor_timeout.restart();
 662 }
 663
 664
 665 bool BufferView::Pimpl::available() const
 666 {
 667         return buffer_ && bv_->text();
 668 }
 669
 670
 671 Change const BufferView::Pimpl::getCurrentChange()
 672 {
 673         if (!buffer_->params().tracking_changes)
 674                 return Change(Change::UNCHANGED);
 675
 676         LyXText * text = bv_->getLyXText();
 677         LCursor & cur = cursor_;
 678
 679         if (!cur.selection())
 680                 return Change(Change::UNCHANGED);
 681
 682         return text->getPar(cur.selBegin().pit()).
 683                         lookupChangeFull(cur.selBegin().pos());
 684 }
 685
 686
 687 void BufferView::Pimpl::savePosition(unsigned int i)
 688 {
 689         if (i >= saved_positions_num)
 690                 return;
 691         BOOST_ASSERT(cursor_.inTexted());
 692         saved_positions[i] = Position(buffer_->fileName(),
 693                                       cursor_.paragraph().id(),
 694                                       cursor_.pos());
 695         if (i > 0)
 696                 owner_->message(bformat(_("Saved bookmark %1$d"), i));
 697 }
 698
 699
 700 void BufferView::Pimpl::restorePosition(unsigned int i)
 701 {
 702         if (i >= saved_positions_num)
 703                 return;
 704
 705         string const fname = saved_positions[i].filename;
 706
 707         cursor_.clearSelection();
 708
 709         if (fname != buffer_->fileName()) {
 710                 Buffer * b = 0;
 711                 if (bufferlist.exists(fname))
 712                         b = bufferlist.getBuffer(fname);
 713                 else {
 714                         b = bufferlist.newBuffer(fname);
 715                         // Don't ask, just load it
 716                         ::loadLyXFile(b, fname);
 717                 }
 718                 if (b)
 719                         setBuffer(b);
 720         }
 721
 722         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 723         if (par == buffer_->par_iterator_end())
 724                 return;
 725
 726         bv_->setCursor(makeDocIterator(par, min(par->size(), saved_positions[i].par_pos)));
 727
 728         if (i > 0)
 729                 owner_->message(bformat(_("Moved to bookmark %1$d"), i));
 730 }
 731
 732
 733 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 734 {
 735         return i < saved_positions_num && !saved_positions[i].filename.empty();
 736 }
 737
 738
 739 void BufferView::Pimpl::switchKeyMap()
 740 {
 741         if (!lyxrc.rtl_support)
 742                 return;
 743
 744         Intl & intl = owner_->getIntl();
 745         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 746                 if (intl.keymap == Intl::PRIMARY)
 747                         intl.KeyMapSec();
 748         } else {
 749                 if (intl.keymap == Intl::SECONDARY)
 750                         intl.KeyMapPrim();
 751         }
 752 }
 753
 754
 755 void BufferView::Pimpl::center()
 756 {
 757         CursorSlice & bot = cursor_.bottom();
 758         lyx::pit_type const pit = bot.pit();
 759         bot.text()->redoParagraph(pit);
 760         Paragraph const & par = bot.text()->paragraphs()[pit];
 761         anchor_ref_ = pit;
 762         offset_ref_ = bv_funcs::coordOffset(cursor_).y_ + par.ascent()
 763                 - workarea().workHeight() / 2;
 764 }
 765
 766
 767 void BufferView::Pimpl::stuffClipboard(string const & content) const
 768 {
 769         workarea().putClipboard(content);
 770 }
 771
 772
 773 void BufferView::Pimpl::MenuInsertLyXFile(string const & filenm)
 774 {
 775         string filename = filenm;
 776
 777         if (filename.empty()) {
 778                 // Launch a file browser
 779                 string initpath = lyxrc.document_path;
 780
 781                 if (available()) {
 782                         string const trypath = owner_->buffer()->filePath();
 783                         // If directory is writeable, use this as default.
 784                         if (IsDirWriteable(trypath))
 785                                 initpath = trypath;
 786                 }
 787
 788                 FileDialog fileDlg(_("Select LyX document to insert"),
 789                         LFUN_FILE_INSERT,
 790                         make_pair(string(_("Documents|#o#O")),
 791                                   string(lyxrc.document_path)),
 792                         make_pair(string(_("Examples|#E#e")),
 793                                   string(AddPath(package().system_support(), "examples"))));
 794
 795                 FileDialog::Result result =
 796                         fileDlg.open(initpath,
 797                                      FileFilterList(_("LyX Documents (*.lyx)")),
 798                                      string());
 799
 800                 if (result.first == FileDialog::Later)
 801                         return;
 802
 803                 filename = result.second;
 804
 805                 // check selected filename
 806                 if (filename.empty()) {
 807                         owner_->message(_("Canceled."));
 808                         return;
 809                 }
 810         }
 811
 812         // Get absolute path of file and add ".lyx"
 813         // to the filename if necessary
 814         filename = FileSearch(string(), filename, "lyx");
 815
 816         string const disp_fn = MakeDisplayPath(filename);
 817         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 818
 819         cursor_.clearSelection();
 820         bv_->getLyXText()->breakParagraph(cursor_);
 821
 822         BOOST_ASSERT(cursor_.inTexted());
 823
 824         string const fname = MakeAbsPath(filename);
 825         bool const res = buffer_->readFile(fname, cursor_.pit());
 826         resizeCurrentBuffer();
 827
 828         string s = res ? _("Document %1$s inserted.")
 829                        : _("Could not insert document %1$s");
 830         owner_->message(bformat(s, disp_fn));
 831 }
 832
 833
 834 void BufferView::Pimpl::trackChanges()
 835 {
 836         bool const tracking = buffer_->params().tracking_changes;
 837
 838         if (!tracking) {
 839                 for_each(buffer_->par_iterator_begin(),
 840                          buffer_->par_iterator_end(),
 841                          bind(&Paragraph::trackChanges, _1, Change::UNCHANGED));
 842                 buffer_->params().tracking_changes = true;
 843
 844                 // We cannot allow undos beyond the freeze point
 845                 buffer_->undostack().clear();
 846         } else {
 847                 update();
 848                 bv_->text()->setCursor(cursor_, 0, 0);
 849 #ifdef WITH_WARNINGS
 850 #warning changes FIXME
 851 #endif
 852                 bool const found = lyx::find::findNextChange(bv_);
 853                 if (found) {
 854                         owner_->getDialogs().show("changes");
 855                         return;
 856                 }
 857
 858                 for_each(buffer_->par_iterator_begin(),
 859                          buffer_->par_iterator_end(),
 860                          mem_fun_ref(&Paragraph::untrackChanges));
 861
 862                 buffer_->params().tracking_changes = false;
 863         }
 864
 865         buffer_->redostack().clear();
 866 }
 867
 868
 869 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd0)
 870 {
 871         lyxerr << BOOST_CURRENT_FUNCTION
 872                << "[ cmd0 " << cmd0 << "]" << endl;
 873
 874         // This is only called for mouse related events including
 875         // LFUN_FILE_OPEN generated by drag-and-drop.
 876         FuncRequest cmd = cmd0;
 877
 878         // Handle drag&drop
 879         if (cmd.action == LFUN_FILE_OPEN) {
 880                 owner_->dispatch(cmd);
 881                 return true;
 882         }
 883
 884         if (!buffer_)
 885                 return false;
 886
 887         LCursor cur(*bv_);
 888         cur.push(buffer_->inset());
 889         cur.selection() = cursor_.selection();
 890
 891         // Doesn't go through lyxfunc, so we need to update
 892         // the layout choice etc. ourselves
 893
 894         // E.g. Qt mouse press when no buffer
 895         if (!available())
 896                 return false;
 897
 898         screen().hideCursor();
 899
 900         // Either the inset under the cursor or the
 901         // surrounding LyXText will handle this event.
 902
 903         // Build temporary cursor.
 904         cmd.y = min(max(cmd.y,-1), workarea().workHeight());
 905         InsetBase * inset = bv_->text()->editXY(cur, cmd.x, cmd.y);
 906         lyxerr << BOOST_CURRENT_FUNCTION
 907                << " * hit inset at tip: " << inset << endl;
 908         lyxerr << BOOST_CURRENT_FUNCTION
 909                << " * created temp cursor:" << cur << endl;
 910
 911         // Put anchor at the same position.
 912         cur.resetAnchor();
 913
 914         // Try to dispatch to an non-editable inset near this position
 915         // via the temp cursor. If the inset wishes to change the real
 916         // cursor it has to do so explicitly by using
 917         //  cur.bv().cursor() = cur;  (or similar)
 918         if (inset)
 919                 inset->dispatch(cur, cmd);
 920
 921         // Now dispatch to the temporary cursor. If the real cursor should
 922         // be modified, the inset's dispatch has to do so explicitly.
 923         if (!cur.result().dispatched())
 924                 cur.dispatch(cmd);
 925
 926         if (cur.result().dispatched()) {
 927                 // Redraw if requested or necessary.
 928                 update(cur.result().update(), cur.result().update());
 929         }
 930
 931         // See workAreaKeyPress
 932         cursor_timeout.restart();
 933         screen().showCursor(*bv_);
 934
 935         // Skip these when selecting
 936         if (cmd.action != LFUN_MOUSE_MOTION) {
 937                 owner_->updateLayoutChoice();
 938                 owner_->updateToolbars();
 939         }
 940
 941         // Slight hack: this is only called currently when we
 942         // clicked somewhere, so we force through the display
 943         // of the new status here.
 944         owner_->clearMessage();
 945         return true;
 946 }
 947
 948
 949 FuncStatus BufferView::Pimpl::getStatus(FuncRequest const & cmd)
 950 {
 951         FuncStatus flag;
 952
 953         switch (cmd.action) {
 954
 955         case LFUN_UNDO:
 956                 flag.enabled(!buffer_->undostack().empty());
 957                 break;
 958         case LFUN_REDO:
 959                 flag.enabled(!buffer_->redostack().empty());
 960                 break;
 961         case LFUN_FILE_INSERT:
 962         case LFUN_FILE_INSERT_ASCII_PARA:
 963         case LFUN_FILE_INSERT_ASCII:
 964         case LFUN_FONT_STATE:
 965         case LFUN_INSERT_LABEL:
 966         case LFUN_BOOKMARK_SAVE:
 967         case LFUN_REF_GOTO:
 968         case LFUN_GOTO_PARAGRAPH:
 969         case LFUN_GOTOERROR:
 970         case LFUN_GOTONOTE:
 971         case LFUN_REFERENCE_GOTO:
 972         case LFUN_WORD_FIND:
 973         case LFUN_WORD_REPLACE:
 974         case LFUN_MARK_OFF:
 975         case LFUN_MARK_ON:
 976         case LFUN_SETMARK:
 977         case LFUN_CENTER:
 978         case LFUN_WORDS_COUNT:
 979                 flag.enabled(true);
 980                 break;
 981
 982         case LFUN_BOOKMARK_GOTO:
 983                 flag.enabled(isSavedPosition(convert<unsigned int>(cmd.argument)));
 984                 break;
 985         case LFUN_TRACK_CHANGES:
 986                 flag.enabled(true);
 987                 flag.setOnOff(buffer_->params().tracking_changes);
 988                 break;
 989
 990         case LFUN_OUTPUT_CHANGES: {
 991                 LaTeXFeatures features(*buffer_, buffer_->params(), false);
 992                 flag.enabled(buffer_ && buffer_->params().tracking_changes
 993                         && features.isAvailable("dvipost"));
 994                 flag.setOnOff(buffer_->params().output_changes);
 995                 break;
 996         }
 997
 998         case LFUN_MERGE_CHANGES:
 999         case LFUN_ACCEPT_CHANGE: // what about these two
1000         case LFUN_REJECT_CHANGE: // what about these two
1001         case LFUN_ACCEPT_ALL_CHANGES:
1002         case LFUN_REJECT_ALL_CHANGES:
1003                 flag.enabled(buffer_ && buffer_->params().tracking_changes);
1004                 break;
1005         default:
1006                 flag.enabled(false);
1007         }
1008
1009         return flag;
1010 }
1011
1012
1013
1014 bool BufferView::Pimpl::dispatch(FuncRequest const & cmd)
1015 {
1016         //lyxerr << BOOST_CURRENT_FUNCTION
1017         //       << [ cmd = " << cmd << "]" << endl;
1018
1019         // Make sure that the cached BufferView is correct.
1020         lyxerr[Debug::ACTION] << BOOST_CURRENT_FUNCTION
1021                 << " action[" << cmd.action << ']'
1022                 << " arg[" << cmd.argument << ']'
1023                 << " x[" << cmd.x << ']'
1024                 << " y[" << cmd.y << ']'
1025                 << " button[" << cmd.button() << ']'
1026                 << endl;
1027
1028         LCursor & cur = cursor_;
1029
1030         switch (cmd.action) {
1031
1032         case LFUN_UNDO:
1033                 if (available()) {
1034                         cur.message(_("Undo"));
1035                         cur.clearSelection();
1036                         if (!textUndo(*bv_))
1037                                 cur.message(_("No further undo information"));
1038                         update();
1039                         switchKeyMap();
1040                 }
1041                 break;
1042
1043         case LFUN_REDO:
1044                 if (available()) {
1045                         cur.message(_("Redo"));
1046                         cur.clearSelection();
1047                         if (!textRedo(*bv_))
1048                                 cur.message(_("No further redo information"));
1049                         update();
1050                         switchKeyMap();
1051                 }
1052                 break;
1053
1054         case LFUN_FILE_INSERT:
1055                 MenuInsertLyXFile(cmd.argument);
1056                 break;
1057
1058         case LFUN_FILE_INSERT_ASCII_PARA:
1059                 InsertAsciiFile(bv_, cmd.argument, true);
1060                 break;
1061
1062         case LFUN_FILE_INSERT_ASCII:
1063                 InsertAsciiFile(bv_, cmd.argument, false);
1064                 break;
1065
1066         case LFUN_FONT_STATE:
1067                 cur.message(cur.currentState());
1068                 break;
1069
1070         case LFUN_BOOKMARK_SAVE:
1071                 savePosition(convert<unsigned int>(cmd.argument));
1072                 break;
1073
1074         case LFUN_BOOKMARK_GOTO:
1075                 restorePosition(convert<unsigned int>(cmd.argument));
1076                 break;
1077
1078         case LFUN_REF_GOTO: {
1079                 string label = cmd.argument;
1080                 if (label.empty()) {
1081                         InsetRef * inset =
1082                                 getInsetByCode<InsetRef>(cursor_,
1083                                                          InsetBase::REF_CODE);
1084                         if (inset) {
1085                                 label = inset->getContents();
1086                                 savePosition(0);
1087                         }
1088                 }
1089
1090                 if (!label.empty())
1091                         bv_->gotoLabel(label);
1092                 break;
1093         }
1094
1095         case LFUN_GOTO_PARAGRAPH: {
1096                 int const id = convert<int>(cmd.argument);
1097                 ParIterator par = buffer_->getParFromID(id);
1098                 if (par == buffer_->par_iterator_end()) {
1099                         lyxerr[Debug::INFO] << "No matching paragraph found! ["
1100                                             << id << ']' << endl;
1101                         break;
1102                 } else {
1103                         lyxerr[Debug::INFO] << "Paragraph " << par->id()
1104                                             << " found." << endl;
1105                 }
1106
1107                 // Set the cursor
1108                 bv_->setCursor(makeDocIterator(par, 0));
1109
1110                 update();
1111                 switchKeyMap();
1112                 break;
1113         }
1114
1115         case LFUN_GOTOERROR:
1116                 bv_funcs::gotoInset(bv_, InsetBase::ERROR_CODE, false);
1117                 break;
1118
1119         case LFUN_GOTONOTE:
1120                 bv_funcs::gotoInset(bv_, InsetBase::NOTE_CODE, false);
1121                 break;
1122
1123         case LFUN_REFERENCE_GOTO: {
1124                 vector<InsetBase_code> tmp;
1125                 tmp.push_back(InsetBase::LABEL_CODE);
1126                 tmp.push_back(InsetBase::REF_CODE);
1127                 bv_funcs::gotoInset(bv_, tmp, true);
1128                 break;
1129         }
1130
1131         case LFUN_TRACK_CHANGES:
1132                 trackChanges();
1133                 break;
1134
1135         case LFUN_OUTPUT_CHANGES: {
1136                 bool const state = buffer_->params().output_changes;
1137                 buffer_->params().output_changes = !state;
1138                 break;
1139         }
1140
1141         case LFUN_MERGE_CHANGES:
1142                 owner_->getDialogs().show("changes");
1143                 break;
1144
1145         case LFUN_ACCEPT_ALL_CHANGES: {
1146                 cursor_.reset(buffer_->inset());
1147 #ifdef WITH_WARNINGS
1148 #warning FIXME changes
1149 #endif
1150                 while (lyx::find::findNextChange(bv_))
1151                         bv_->getLyXText()->acceptChange(cursor_);
1152                 update();
1153                 break;
1154         }
1155
1156         case LFUN_REJECT_ALL_CHANGES: {
1157                 cursor_.reset(buffer_->inset());
1158 #ifdef WITH_WARNINGS
1159 #warning FIXME changes
1160 #endif
1161                 while (lyx::find::findNextChange(bv_))
1162                         bv_->getLyXText()->rejectChange(cursor_);
1163                 break;
1164         }
1165
1166         case LFUN_WORD_FIND:
1167                 lyx::find::find(bv_, cmd);
1168                 break;
1169
1170         case LFUN_WORD_REPLACE:
1171                 lyx::find::replace(bv_, cmd);
1172                 break;
1173
1174         case LFUN_MARK_OFF:
1175                 cur.clearSelection();
1176                 cur.resetAnchor();
1177                 cur.message(N_("Mark off"));
1178                 break;
1179
1180         case LFUN_MARK_ON:
1181                 cur.clearSelection();
1182                 cur.mark() = true;
1183                 cur.resetAnchor();
1184                 cur.message(N_("Mark on"));
1185                 break;
1186
1187         case LFUN_SETMARK:
1188                 cur.clearSelection();
1189                 if (cur.mark()) {
1190                         cur.mark() = false;
1191                         cur.message(N_("Mark removed"));
1192                 } else {
1193                         cur.mark() = true;
1194                         cur.message(N_("Mark set"));
1195                 }
1196                 cur.resetAnchor();
1197                 break;
1198
1199         case LFUN_CENTER:
1200                 center();
1201                 break;
1202
1203         case LFUN_WORDS_COUNT: {
1204                 DocIterator from, to;
1205                 if (cur.selection()) {
1206                         from = cur.selectionBegin();
1207                         to = cur.selectionEnd();
1208                 } else {
1209                         from = doc_iterator_begin(buffer_->inset());
1210                         to = doc_iterator_end(buffer_->inset());
1211                 }
1212                 int const count = countWords(from, to);
1213                 string message;
1214                 if (count != 1) {
1215                         if (cur.selection())
1216                                 message = bformat(_("%1$d words in selection."),
1217                                           count);
1218                                 else
1219                                         message = bformat(_("%1$d words in document."),
1220                                                           count);
1221                 }
1222                 else {
1223                         if (cur.selection())
1224                                 message = _("One word in selection.");
1225                         else
1226                                 message = _("One word in document.");
1227                 }
1228
1229                 Alert::information(_("Count words"), message);
1230         }
1231                 break;
1232         default:
1233                 return false;
1234         }
1235
1236         return true;
1237 }
1238
1239
1240 ViewMetricsInfo BufferView::Pimpl::metrics()
1241 {
1242         // Remove old position cache
1243         theCoords.clear();
1244         BufferView & bv = *bv_;
1245         LyXText * const text = bv.text();
1246         if (anchor_ref_ > int(text->paragraphs().size() - 1)) {
1247                 anchor_ref_ = int(text->paragraphs().size() - 1);
1248                 offset_ref_ = 0;
1249         }
1250
1251         lyx::pit_type const pit = anchor_ref_;
1252         int pit1 = pit;
1253         int pit2 = pit;
1254         size_t const npit = text->paragraphs().size();
1255
1256         lyxerr << BOOST_CURRENT_FUNCTION
1257                << " npit: " << npit
1258                << " pit1: " << pit1
1259                << " pit2: " << pit2
1260                << endl;
1261
1262         // Rebreak anchor par
1263         text->redoParagraph(pit);
1264         int y0 = text->getPar(pit1).ascent() - offset_ref_;
1265
1266         // Redo paragraphs above cursor if necessary
1267         int y1 = y0;
1268         while (y1 > 0 && pit1 > 0) {
1269                 y1 -= text->getPar(pit1).ascent();
1270                 --pit1;
1271                 text->redoParagraph(pit1);
1272                 y1 -= text->getPar(pit1).descent();
1273         }
1274
1275
1276         // Take care of ascent of first line
1277         y1 -= text->getPar(pit1).ascent();
1278
1279         // Normalize anchor for next time
1280         anchor_ref_ = pit1;
1281         offset_ref_ = -y1;
1282
1283         // Grey at the beginning is ugly
1284         if (pit1 == 0 && y1 > 0) {
1285                 y0 -= y1;
1286                 y1 = 0;
1287                 anchor_ref_ = 0;
1288         }
1289
1290         // Redo paragraphs below cursor if necessary
1291         int y2 = y0;
1292         while (y2 < bv.workHeight() && pit2 < int(npit) - 1) {
1293                 y2 += text->getPar(pit2).descent();
1294                 ++pit2;
1295                 text->redoParagraph(pit2);
1296                 y2 += text->getPar(pit2).ascent();
1297         }
1298
1299         // Take care of descent of last line
1300         y2 += text->getPar(pit2).descent();
1301
1302         // The coordinates of all these paragraphs are correct, cache them
1303         int y = y1;
1304         for (lyx::pit_type pit = pit1; pit <= pit2; ++pit) {
1305                 y += text->getPar(pit).ascent();
1306                 theCoords.parPos()[text][pit] = Point(0, y);
1307                 y += text->getPar(pit).descent();
1308         }
1309
1310         lyxerr << BOOST_CURRENT_FUNCTION
1311                << " y1: " << y1
1312                << " y2: " << y2
1313                << endl;
1314
1315         return ViewMetricsInfo(pit1, pit2, y1, y2);
1316 }