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
  80 using lyx::pos_type;
  81
  82 using lyx::support::AddPath;
  83 using lyx::support::bformat;
  84 using lyx::support::FileFilterList;
  85 using lyx::support::FileSearch;
  86 using lyx::support::ForkedcallsController;
  87 using lyx::support::IsDirWriteable;
  88 using lyx::support::MakeDisplayPath;
  89 using lyx::support::MakeAbsPath;
  90 using lyx::support::package;
  91
  92 using std::endl;
  93 using std::istringstream;
  94 using std::make_pair;
  95 using std::min;
  96 using std::max;
  97 using std::string;
  98 using std::mem_fun_ref;
  99
 100
 101 extern BufferList bufferlist;
 102
 103
 104 namespace {
 105
 106 unsigned int const saved_positions_num = 20;
 107
 108 // All the below connection objects are needed because of a bug in some
 109 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
 110 // to these connections we avoid a segfault upon startup, and also at exit.
 111 // (Lgb)
 112
 113 boost::signals::connection dispatchcon;
 114 boost::signals::connection timecon;
 115 boost::signals::connection doccon;
 116 boost::signals::connection resizecon;
 117 boost::signals::connection kpresscon;
 118 boost::signals::connection selectioncon;
 119 boost::signals::connection lostcon;
 120
 121
 122 /// Get next inset of this class from current cursor position
 123 template <class T>
 124 T * getInsetByCode(LCursor & cur, InsetBase::Code code)
 125 {
 126         T * inset = 0;
 127         DocIterator it = cur;
 128         if (it.nextInset() &&
 129             it.nextInset()->lyxCode() == code) {
 130                 inset = static_cast<T*>(it.nextInset());
 131         }
 132         return inset;
 133 }
 134
 135
 136 } // anon namespace
 137
 138
 139 BufferView::Pimpl::Pimpl(BufferView & bv, LyXView * owner,
 140                          int width, int height)
 141         : bv_(&bv), owner_(owner), buffer_(0), cursor_timeout(400),
 142           using_xterm_cursor(false), cursor_(bv) ,
 143           anchor_ref_(0), offset_ref_(0)
 144 {
 145         xsel_cache_.set = false;
 146
 147         workarea_.reset(WorkAreaFactory::create(*owner_, width, height));
 148         screen_.reset(LyXScreenFactory::create(workarea()));
 149
 150         // Setup the signals
 151         doccon = workarea().scrollDocView
 152                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 153         resizecon = workarea().workAreaResize
 154                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 155         dispatchcon = workarea().dispatch
 156                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 157         kpresscon = workarea().workAreaKeyPress
 158                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 159         selectioncon = workarea().selectionRequested
 160                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 161         lostcon = workarea().selectionLost
 162                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 163
 164         timecon = cursor_timeout.timeout
 165                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 166         cursor_timeout.start();
 167         saved_positions.resize(saved_positions_num);
 168 }
 169
 170
 171 void BufferView::Pimpl::addError(ErrorItem const & ei)
 172 {
 173         errorlist_.push_back(ei);
 174 }
 175
 176
 177 void BufferView::Pimpl::showReadonly(bool)
 178 {
 179         owner_->updateWindowTitle();
 180         owner_->getDialogs().updateBufferDependent(false);
 181 }
 182
 183
 184 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 185 {
 186         if (errorConnection_.connected())
 187                 disconnectBuffer();
 188
 189         errorConnection_ =
 190                 buf.error.connect(
 191                         boost::bind(&BufferView::Pimpl::addError, this, _1));
 192
 193         messageConnection_ =
 194                 buf.message.connect(
 195                         boost::bind(&LyXView::message, owner_, _1));
 196
 197         busyConnection_ =
 198                 buf.busy.connect(
 199                         boost::bind(&LyXView::busy, owner_, _1));
 200
 201         titleConnection_ =
 202                 buf.updateTitles.connect(
 203                         boost::bind(&LyXView::updateWindowTitle, owner_));
 204
 205         timerConnection_ =
 206                 buf.resetAutosaveTimers.connect(
 207                         boost::bind(&LyXView::resetAutosaveTimer, owner_));
 208
 209         readonlyConnection_ =
 210                 buf.readonly.connect(
 211                         boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 212
 213         closingConnection_ =
 214                 buf.closing.connect(
 215                         boost::bind(&BufferView::Pimpl::setBuffer, this, (Buffer *)0));
 216 }
 217
 218
 219 void BufferView::Pimpl::disconnectBuffer()
 220 {
 221         errorConnection_.disconnect();
 222         messageConnection_.disconnect();
 223         busyConnection_.disconnect();
 224         titleConnection_.disconnect();
 225         timerConnection_.disconnect();
 226         readonlyConnection_.disconnect();
 227         closingConnection_.disconnect();
 228 }
 229
 230
 231 void BufferView::Pimpl::newFile(string const & filename, string const & tname,
 232         bool isNamed)
 233 {
 234         setBuffer(::newFile(filename, tname, isNamed));
 235 }
 236
 237
 238 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 239 {
 240         // get absolute path of file and add ".lyx" to the filename if
 241         // necessary
 242         string s = FileSearch(string(), filename, "lyx");
 243
 244         bool const found = !s.empty();
 245
 246         if (!found)
 247                 s = filename;
 248
 249         // file already open?
 250         if (bufferlist.exists(s)) {
 251                 string const file = MakeDisplayPath(s, 20);
 252                 string text = bformat(_("The document %1$s is already "
 253                                         "loaded.\n\nDo you want to revert "
 254                                         "to the saved version?"), file);
 255                 int const ret = Alert::prompt(_("Revert to saved document?"),
 256                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 257
 258                 if (ret != 0) {
 259                         setBuffer(bufferlist.getBuffer(s));
 260                         return true;
 261                 }
 262                 // FIXME: should be LFUN_REVERT
 263                 if (!bufferlist.close(bufferlist.getBuffer(s), false))
 264                         return false;
 265                 // Fall through to new load. (Asger)
 266         }
 267
 268         Buffer * b;
 269
 270         if (found) {
 271                 b = bufferlist.newBuffer(s);
 272                 connectBuffer(*b);
 273                 if (!::loadLyXFile(b, s)) {
 274                         bufferlist.release(b);
 275                         return false;
 276                 }
 277         } else {
 278                 string text = bformat(_("The document %1$s does not yet "
 279                                         "exist.\n\nDo you want to create "
 280                                         "a new document?"), s);
 281                 int const ret = Alert::prompt(_("Create new document?"),
 282                          text, 0, 1, _("&Create"), _("Cancel"));
 283
 284                 if (ret == 0)
 285                         b = ::newFile(s, string(), true);
 286                 else
 287                         return false;
 288         }
 289
 290         setBuffer(b);
 291         bv_->showErrorList(_("Parse"));
 292
 293         if (tolastfiles)
 294                 LyX::ref().lastfiles().newFile(b->fileName());
 295
 296         return true;
 297 }
 298
 299
 300 WorkArea & BufferView::Pimpl::workarea() const
 301 {
 302         return *workarea_.get();
 303 }
 304
 305
 306 LyXScreen & BufferView::Pimpl::screen() const
 307 {
 308         return *screen_.get();
 309 }
 310
 311
 312 Painter & BufferView::Pimpl::painter() const
 313 {
 314         return workarea().getPainter();
 315 }
 316
 317
 318 void BufferView::Pimpl::setBuffer(Buffer * b)
 319 {
 320         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 321                             << b << ')' << endl;
 322         if (buffer_)
 323                 disconnectBuffer();
 324
 325         // if we are closing current buffer, switch to the first in
 326         // buffer list.
 327         if (!b) {
 328                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 329                 // we are closing the buffer, use the first buffer as current
 330                 buffer_ = bufferlist.first();
 331                 owner_->getDialogs().hideBufferDependent();
 332         } else {
 333                 // set current buffer
 334                 buffer_ = b;
 335         }
 336
 337         // reset old cursor
 338         cursor_ = LCursor(*bv_);
 339         anchor_ref_ = 0;
 340         offset_ref_ = 0;
 341
 342
 343         // if we're quitting lyx, don't bother updating stuff
 344         if (quitting)
 345                 return;
 346
 347         if (buffer_) {
 348                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 349                 connectBuffer(*buffer_);
 350
 351                 cursor_.push(buffer_->inset());
 352                 cursor_.resetAnchor();
 353                 buffer_->text().init(bv_);
 354                 buffer_->text().setCurrentFont(cursor_);
 355
 356                 // Buffer-dependent dialogs should be updated or
 357                 // hidden. This should go here because some dialogs (eg ToC)
 358                 // require bv_->text.
 359                 owner_->getDialogs().updateBufferDependent(true);
 360         }
 361
 362         update();
 363         updateScrollbar();
 364         owner_->updateMenubar();
 365         owner_->updateToolbars();
 366         owner_->updateLayoutChoice();
 367         owner_->updateWindowTitle();
 368
 369         // This is done after the layout combox has been populated
 370         if (buffer_)
 371                 owner_->setLayout(cursor_.paragraph().layout()->name());
 372
 373         if (buffer_ && lyx::graphics::Previews::status() != LyXRC::PREVIEW_OFF)
 374                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 375 }
 376
 377
 378 void BufferView::Pimpl::resizeCurrentBuffer()
 379 {
 380         lyxerr[Debug::DEBUG] << "resizeCurrentBuffer" << endl;
 381         owner_->busy(true);
 382         owner_->message(_("Formatting document..."));
 383
 384         LyXText * text = bv_->text();
 385         if (!text)
 386                 return;
 387
 388         text->init(bv_);
 389         update();
 390
 391         switchKeyMap();
 392         owner_->busy(false);
 393
 394         // reset the "Formatting..." message
 395         owner_->clearMessage();
 396
 397         updateScrollbar();
 398 }
 399
 400
 401 void BufferView::Pimpl::updateScrollbar()
 402 {
 403         if (!bv_->text()) {
 404                 lyxerr[Debug::DEBUG] << "no text in updateScrollbar" << endl;
 405                 workarea().setScrollbarParams(0, 0, 0);
 406                 return;
 407         }
 408
 409         LyXText & t = *bv_->text();
 410         if (anchor_ref_ >  int(t.paragraphs().size()) - 1) {
 411                 anchor_ref_ = int(t.paragraphs().size()) - 1;
 412                 offset_ref_ = 0;
 413         }
 414
 415         lyxerr[Debug::GUI]
 416                 << "Updating scrollbar: height: " << t.paragraphs().size()
 417                 << " curr par: " << bv_->cursor().bottom().pit()
 418                 << " default height " << defaultRowHeight() << endl;
 419
 420         //it would be better to fix the scrollbar to understand
 421         //values in [0..1] and divide everything by wh
 422         int const wh = workarea().workHeight() / 4;
 423         int const h = t.getPar(anchor_ref_).height();
 424         workarea().setScrollbarParams(t.paragraphs().size() * wh, anchor_ref_ * wh + int(offset_ref_ * wh / float(h)), int (wh * defaultRowHeight() / float(h)));
 425 //      workarea().setScrollbarParams(t.paragraphs().size(), anchor_ref_, 1);
 426 }
 427
 428
 429 void BufferView::Pimpl::scrollDocView(int value)
 430 {
 431         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 432
 433         if (!buffer_)
 434                 return;
 435
 436         screen().hideCursor();
 437
 438         int const wh = workarea().workHeight() / 4;
 439
 440         LyXText & t = *bv_->text();
 441
 442         float const bar = value / float(wh * t.paragraphs().size());
 443
 444         anchor_ref_ = int(bar * t.paragraphs().size());
 445         t.redoParagraph(anchor_ref_);
 446         int const h = t.getPar(anchor_ref_).height();
 447         offset_ref_ = int((bar * t.paragraphs().size() - anchor_ref_) * h);
 448         update();
 449
 450         if (!lyxrc.cursor_follows_scrollbar)
 451                 return;
 452
 453         int const height = 2 * defaultRowHeight();
 454         int const first = height;
 455         int const last = workarea().workHeight() - height;
 456         LCursor & cur = bv_->cursor();
 457
 458         bv_funcs::CurStatus st = bv_funcs::status(bv_, cur);
 459
 460         switch (st) {
 461         case bv_funcs::CUR_ABOVE:
 462                 t.setCursorFromCoordinates(cur, 0, first);
 463                 cur.clearSelection();
 464                 break;
 465         case bv_funcs::CUR_BELOW:
 466                 t.setCursorFromCoordinates(cur, 0, last);
 467                 cur.clearSelection();
 468                 break;
 469         case bv_funcs::CUR_INSIDE:
 470                 int const y = bv_funcs::getPos(cur).y_;
 471                 int const newy = min(last, max(y, first));
 472                 if (y != newy) {
 473                         cur.reset(bv_->buffer()->inset());
 474                         t.setCursorFromCoordinates(cur, 0, newy);
 475                 }
 476         }
 477         owner_->updateLayoutChoice();
 478 }
 479
 480
 481 void BufferView::Pimpl::scroll(int lines)
 482 {
 483 //      if (!buffer_)
 484 //              return;
 485 //
 486 //      LyXText const * t = bv_->text();
 487 //      int const line_height = defaultRowHeight();
 488 //
 489 //      // The new absolute coordinate
 490 //      int new_top_y = top_y() + lines * line_height;
 491 //
 492 //      // Restrict to a valid value
 493 //      new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
 494 //      new_top_y = std::max(0, new_top_y);
 495 //
 496 //      scrollDocView(new_top_y);
 497 //
 498 //      // Update the scrollbar.
 499 //      workarea().setScrollbarParams(t->height(), top_y(), defaultRowHeight());
 500 }
 501
 502
 503 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 504                                          key_modifier::state state)
 505 {
 506         bv_->owner()->getLyXFunc().processKeySym(key, state);
 507
 508         /* This is perhaps a bit of a hack. When we move
 509          * around, or type, it's nice to be able to see
 510          * the cursor immediately after the keypress. So
 511          * we reset the toggle timeout and force the visibility
 512          * of the cursor. Note we cannot do this inside
 513          * dispatch() itself, because that's called recursively.
 514          */
 515         if (available()) {
 516                 cursor_timeout.restart();
 517                 screen().showCursor(*bv_);
 518         }
 519 }
 520
 521
 522 void BufferView::Pimpl::selectionRequested()
 523 {
 524         static string sel;
 525
 526         if (!available())
 527                 return;
 528
 529         LCursor & cur = bv_->cursor();
 530
 531         if (!cur.selection()) {
 532                 xsel_cache_.set = false;
 533                 return;
 534         }
 535
 536         if (!xsel_cache_.set ||
 537             cur.back() != xsel_cache_.cursor ||
 538             cur.anchor_.back() != xsel_cache_.anchor)
 539         {
 540                 xsel_cache_.cursor = cur.back();
 541                 xsel_cache_.anchor = cur.anchor_.back();
 542                 xsel_cache_.set = cur.selection();
 543                 sel = cur.selectionAsString(false);
 544                 if (!sel.empty())
 545                         workarea().putClipboard(sel);
 546         }
 547 }
 548
 549
 550 void BufferView::Pimpl::selectionLost()
 551 {
 552         if (available()) {
 553                 screen().hideCursor();
 554                 bv_->cursor().clearSelection();
 555                 xsel_cache_.set = false;
 556         }
 557 }
 558
 559
 560 void BufferView::Pimpl::workAreaResize()
 561 {
 562         static int work_area_width;
 563         static int work_area_height;
 564
 565         bool const widthChange = workarea().workWidth() != work_area_width;
 566         bool const heightChange = workarea().workHeight() != work_area_height;
 567
 568         // update from work area
 569         work_area_width = workarea().workWidth();
 570         work_area_height = workarea().workHeight();
 571
 572         if (buffer_ && widthChange) {
 573                 // The visible LyXView need a resize
 574                 resizeCurrentBuffer();
 575         }
 576
 577         if (widthChange || heightChange)
 578                 update();
 579
 580         // always make sure that the scrollbar is sane.
 581         updateScrollbar();
 582         owner_->updateLayoutChoice();
 583 }
 584
 585
 586 bool BufferView::Pimpl::fitCursor()
 587 {
 588         if (bv_funcs::status(bv_, bv_->cursor()) == bv_funcs::CUR_INSIDE) {
 589                 LyXFont const font = bv_->cursor().getFont();
 590                 int const asc = font_metrics::maxAscent(font);
 591                 int const des = font_metrics::maxDescent(font);
 592                 Point p = bv_funcs::getPos(bv_->cursor());
 593                 if (p.y_ - asc >= 0 && p.y_ + des < bv_->workHeight())
 594                         return false;
 595         }
 596         bv_->center();
 597         return true;
 598 }
 599
 600
 601 void BufferView::Pimpl::update(bool fitcursor, bool forceupdate)
 602 {
 603         lyxerr << "BufferView::Pimpl::update(fc=" << fitcursor << ", fu="
 604                << forceupdate << ")  buffer: " << buffer_ << endl;
 605
 606         // check needed to survive LyX startup
 607         if (buffer_) {
 608                 // update macro store
 609                 buffer_->buildMacros();
 610                 // first drawing step
 611
 612                 CoordCache backup;
 613                 std::swap(theCoords, backup);
 614                 theCoords.startUpdating();
 615                 //
 616                 ViewMetricsInfo vi = metrics();
 617
 618                 if (fitcursor && fitCursor()) {
 619                         forceupdate = true;
 620                         vi = metrics();
 621                 }
 622                 if (forceupdate) {
 623                         // second drawing step
 624                         screen().redraw(*bv_, vi);
 625                 } else {
 626                         // Abort updating of the coord cache - just restore the old one
 627                         std::swap(theCoords, backup);
 628                 }
 629         } else
 630                 screen().greyOut();
 631
 632         // and the scrollbar
 633         updateScrollbar();
 634         bv_->owner()->view_state_changed();
 635 }
 636
 637
 638 // Callback for cursor timer
 639 void BufferView::Pimpl::cursorToggle()
 640 {
 641         if (buffer_) {
 642                 screen().toggleCursor(*bv_);
 643
 644                 // Use this opportunity to deal with any child processes that
 645                 // have finished but are waiting to communicate this fact
 646                 // to the rest of LyX.
 647                 ForkedcallsController & fcc = ForkedcallsController::get();
 648                 if (fcc.processesCompleted())
 649                         fcc.handleCompletedProcesses();
 650         }
 651
 652         cursor_timeout.restart();
 653 }
 654
 655
 656 bool BufferView::Pimpl::available() const
 657 {
 658         return buffer_ && bv_->text();
 659 }
 660
 661
 662 Change const BufferView::Pimpl::getCurrentChange()
 663 {
 664         if (!bv_->buffer()->params().tracking_changes)
 665                 return Change(Change::UNCHANGED);
 666
 667         LyXText * text = bv_->getLyXText();
 668         LCursor & cur = bv_->cursor();
 669
 670         if (!cur.selection())
 671                 return Change(Change::UNCHANGED);
 672
 673         return text->getPar(cur.selBegin().pit()).
 674                         lookupChangeFull(cur.selBegin().pos());
 675 }
 676
 677
 678 void BufferView::Pimpl::savePosition(unsigned int i)
 679 {
 680         if (i >= saved_positions_num)
 681                 return;
 682         BOOST_ASSERT(bv_->cursor().inTexted());
 683         saved_positions[i] = Position(buffer_->fileName(),
 684                                       bv_->cursor().paragraph().id(),
 685                                       bv_->cursor().pos());
 686         if (i > 0)
 687                 owner_->message(bformat(_("Saved bookmark %1$d"), i));
 688 }
 689
 690
 691 void BufferView::Pimpl::restorePosition(unsigned int i)
 692 {
 693         if (i >= saved_positions_num)
 694                 return;
 695
 696         string const fname = saved_positions[i].filename;
 697
 698         bv_->cursor().clearSelection();
 699
 700         if (fname != buffer_->fileName()) {
 701                 Buffer * b = 0;
 702                 if (bufferlist.exists(fname))
 703                         b = bufferlist.getBuffer(fname);
 704                 else {
 705                         b = bufferlist.newBuffer(fname);
 706                         ::loadLyXFile(b, fname); // don't ask, just load it
 707                 }
 708                 if (b)
 709                         setBuffer(b);
 710         }
 711
 712         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 713         if (par == buffer_->par_iterator_end())
 714                 return;
 715
 716         bv_->text()->setCursor(bv_->cursor(), par.pit(),
 717                 min(par->size(), saved_positions[i].par_pos));
 718
 719         if (i > 0)
 720                 owner_->message(bformat(_("Moved to bookmark %1$d"), i));
 721 }
 722
 723
 724 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 725 {
 726         return i < saved_positions_num && !saved_positions[i].filename.empty();
 727 }
 728
 729
 730 void BufferView::Pimpl::switchKeyMap()
 731 {
 732         if (!lyxrc.rtl_support)
 733                 return;
 734
 735         Intl & intl = owner_->getIntl();
 736         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 737                 if (intl.keymap == Intl::PRIMARY)
 738                         intl.KeyMapSec();
 739         } else {
 740                 if (intl.keymap == Intl::SECONDARY)
 741                         intl.KeyMapPrim();
 742         }
 743 }
 744
 745
 746 void BufferView::Pimpl::center()
 747 {
 748         CursorSlice & bot = bv_->cursor().bottom();
 749         lyx::pit_type const pit = bot.pit();
 750         bot.text()->redoParagraph(pit);
 751         Paragraph const & par = bot.text()->paragraphs()[pit];
 752         anchor_ref_ = pit;
 753         offset_ref_ = bv_funcs::coordOffset(bv_->cursor()).y_ + par.ascent()
 754                 - workarea().workHeight() / 2;
 755 }
 756
 757
 758 void BufferView::Pimpl::stuffClipboard(string const & content) const
 759 {
 760         workarea().putClipboard(content);
 761 }
 762
 763
 764 void BufferView::Pimpl::MenuInsertLyXFile(string const & filenm)
 765 {
 766         string filename = filenm;
 767
 768         if (filename.empty()) {
 769                 // Launch a file browser
 770                 string initpath = lyxrc.document_path;
 771
 772                 if (available()) {
 773                         string const trypath = owner_->buffer()->filePath();
 774                         // If directory is writeable, use this as default.
 775                         if (IsDirWriteable(trypath))
 776                                 initpath = trypath;
 777                 }
 778
 779                 FileDialog fileDlg(_("Select LyX document to insert"),
 780                         LFUN_FILE_INSERT,
 781                         make_pair(string(_("Documents|#o#O")),
 782                                   string(lyxrc.document_path)),
 783                         make_pair(string(_("Examples|#E#e")),
 784                                   string(AddPath(package().system_support(), "examples"))));
 785
 786                 FileDialog::Result result =
 787                         fileDlg.open(initpath,
 788                                      FileFilterList(_("LyX Documents (*.lyx)")),
 789                                      string());
 790
 791                 if (result.first == FileDialog::Later)
 792                         return;
 793
 794                 filename = result.second;
 795
 796                 // check selected filename
 797                 if (filename.empty()) {
 798                         owner_->message(_("Canceled."));
 799                         return;
 800                 }
 801         }
 802
 803         // get absolute path of file and add ".lyx" to the filename if
 804         // necessary
 805         filename = FileSearch(string(), filename, "lyx");
 806
 807         string const disp_fn = MakeDisplayPath(filename);
 808         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 809
 810         bv_->cursor().clearSelection();
 811         bv_->getLyXText()->breakParagraph(bv_->cursor());
 812
 813         BOOST_ASSERT(bv_->cursor().inTexted());
 814
 815         string const fname = MakeAbsPath(filename);
 816         bool const res = bv_->buffer()->readFile(fname, bv_->cursor().pit());
 817         bv_->resize();
 818
 819         string s = res ? _("Document %1$s inserted.")
 820                        : _("Could not insert document %1$s");
 821         owner_->message(bformat(s, disp_fn));
 822 }
 823
 824
 825 void BufferView::Pimpl::trackChanges()
 826 {
 827         Buffer * buf = bv_->buffer();
 828         bool const tracking = buf->params().tracking_changes;
 829
 830         if (!tracking) {
 831                 for_each(buf->par_iterator_begin(),
 832                          buf->par_iterator_end(),
 833                          bind(&Paragraph::trackChanges, _1, Change::UNCHANGED));
 834                 buf->params().tracking_changes = true;
 835
 836                 // we cannot allow undos beyond the freeze point
 837                 buf->undostack().clear();
 838         } else {
 839                 update();
 840                 bv_->text()->setCursor(bv_->cursor(), 0, 0);
 841 #ifdef WITH_WARNINGS
 842 #warning changes FIXME
 843 #endif
 844                 bool found = lyx::find::findNextChange(bv_);
 845                 if (found) {
 846                         owner_->getDialogs().show("changes");
 847                         return;
 848                 }
 849
 850                 for_each(buf->par_iterator_begin(),
 851                          buf->par_iterator_end(),
 852                          mem_fun_ref(&Paragraph::untrackChanges));
 853
 854                 buf->params().tracking_changes = false;
 855         }
 856
 857         buf->redostack().clear();
 858 }
 859
 860
 861 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd0)
 862 {
 863         lyxerr << "BufferView::Pimpl::workAreaDispatch: request: "
 864           << cmd0 << std::endl;
 865         // this is only called for mouse related events including
 866         // LFUN_FILE_OPEN generated by drag-and-drop.
 867         FuncRequest cmd = cmd0;
 868
 869         // handle drag&drop
 870         if (cmd.action == LFUN_FILE_OPEN) {
 871                 owner_->dispatch(cmd);
 872                 return true;
 873         }
 874
 875         if (!bv_->buffer())
 876                 return false;
 877
 878         LCursor cur(*bv_);
 879         cur.push(bv_->buffer()->inset());
 880         cur.selection() = bv_->cursor().selection();
 881
 882         // Doesn't go through lyxfunc, so we need to update
 883         // the layout choice etc. ourselves
 884
 885         // e.g. Qt mouse press when no buffer
 886         if (!available())
 887                 return false;
 888
 889         screen().hideCursor();
 890
 891         // Either the inset under the cursor or the
 892         // surrounding LyXText will handle this event.
 893
 894         // Build temporary cursor.
 895         cmd.y = min(max(cmd.y,-1), bv_->workHeight());
 896         InsetBase * inset = bv_->text()->editXY(cur, cmd.x, cmd.y);
 897         lyxerr << " * hit inset at tip: " << inset << endl;
 898         lyxerr << " * created temp cursor:" << cur << endl;
 899
 900         // Put anchor at the same position.
 901         cur.resetAnchor();
 902
 903         // Try to dispatch to an non-editable inset near this position
 904         // via the temp cursor. If the inset wishes to change the real
 905         // cursor it has to do so explicitly by using
 906         //  cur.bv().cursor() = cur;  (or similar)
 907         if (inset)
 908                 inset->dispatch(cur, cmd);
 909
 910         // Now dispatch to the temporary cursor. If the real cursor should
 911         // be modified, the inset's dispatch has to do so explicitly.
 912         if (!cur.result().dispatched())
 913                 cur.dispatch(cmd);
 914
 915         if (cur.result().dispatched()) {
 916                 // Redraw if requested or necessary.
 917                 update(cur.result().update(), cur.result().update());
 918         }
 919
 920         // see workAreaKeyPress
 921         cursor_timeout.restart();
 922         screen().showCursor(*bv_);
 923
 924         // skip these when selecting
 925         if (cmd.action != LFUN_MOUSE_MOTION) {
 926                 owner_->updateLayoutChoice();
 927                 owner_->updateToolbars();
 928         }
 929
 930         // slight hack: this is only called currently when we
 931         // clicked somewhere, so we force through the display
 932         // of the new status here.
 933         owner_->clearMessage();
 934         return true;
 935 }
 936
 937
 938 FuncStatus BufferView::Pimpl::getStatus(FuncRequest const & cmd)
 939 {
 940         Buffer * buf = bv_->buffer();
 941
 942         FuncStatus flag;
 943
 944         switch (cmd.action) {
 945
 946         case LFUN_UNDO:
 947                 flag.enabled(!buf->undostack().empty());
 948                 break;
 949         case LFUN_REDO:
 950                 flag.enabled(!buf->redostack().empty());
 951                 break;
 952         case LFUN_FILE_INSERT:
 953         case LFUN_FILE_INSERT_ASCII_PARA:
 954         case LFUN_FILE_INSERT_ASCII:
 955         case LFUN_FONT_STATE:
 956         case LFUN_INSERT_LABEL:
 957         case LFUN_BOOKMARK_SAVE:
 958         case LFUN_REF_GOTO:
 959         case LFUN_WORD_FIND:
 960         case LFUN_WORD_REPLACE:
 961         case LFUN_MARK_OFF:
 962         case LFUN_MARK_ON:
 963         case LFUN_SETMARK:
 964         case LFUN_CENTER:
 965         case LFUN_WORDS_COUNT:
 966                 flag.enabled(true);
 967                 break;
 968
 969         case LFUN_BOOKMARK_GOTO:
 970                 flag.enabled(bv_->isSavedPosition(convert<unsigned int>(cmd.argument)));
 971                 break;
 972         case LFUN_TRACK_CHANGES:
 973                 flag.enabled(true);
 974                 flag.setOnOff(buf->params().tracking_changes);
 975                 break;
 976
 977         case LFUN_OUTPUT_CHANGES: {
 978                 LaTeXFeatures features(*buf, buf->params(), false);
 979                 flag.enabled(buf && buf->params().tracking_changes
 980                         && features.isAvailable("dvipost"));
 981                 flag.setOnOff(buf->params().output_changes);
 982                 break;
 983         }
 984
 985         case LFUN_MERGE_CHANGES:
 986         case LFUN_ACCEPT_CHANGE: // what about these two
 987         case LFUN_REJECT_CHANGE: // what about these two
 988         case LFUN_ACCEPT_ALL_CHANGES:
 989         case LFUN_REJECT_ALL_CHANGES:
 990                 flag.enabled(buf && buf->params().tracking_changes);
 991                 break;
 992         default:
 993                 flag.enabled(false);
 994         }
 995
 996         return flag;
 997 }
 998
 999
1000
1001 bool BufferView::Pimpl::dispatch(FuncRequest const & cmd)
1002 {
1003         //lyxerr << "BufferView::Pimpl::dispatch  cmd: " << cmd << std::endl;
1004         // Make sure that the cached BufferView is correct.
1005         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
1006                 << " action[" << cmd.action << ']'
1007                 << " arg[" << cmd.argument << ']'
1008                 << " x[" << cmd.x << ']'
1009                 << " y[" << cmd.y << ']'
1010                 << " button[" << cmd.button() << ']'
1011                 << endl;
1012
1013         LCursor & cur = bv_->cursor();
1014
1015         switch (cmd.action) {
1016
1017         case LFUN_UNDO:
1018                 if (available()) {
1019                         cur.message(_("Undo"));
1020                         cur.clearSelection();
1021                         if (!textUndo(*bv_))
1022                                 cur.message(_("No further undo information"));
1023                         update();
1024                         switchKeyMap();
1025                 }
1026                 break;
1027
1028         case LFUN_REDO:
1029                 if (available()) {
1030                         cur.message(_("Redo"));
1031                         cur.clearSelection();
1032                         if (!textRedo(*bv_))
1033                                 cur.message(_("No further redo information"));
1034                         update();
1035                         switchKeyMap();
1036                 }
1037                 break;
1038
1039         case LFUN_FILE_INSERT:
1040                 MenuInsertLyXFile(cmd.argument);
1041                 break;
1042
1043         case LFUN_FILE_INSERT_ASCII_PARA:
1044                 InsertAsciiFile(bv_, cmd.argument, true);
1045                 break;
1046
1047         case LFUN_FILE_INSERT_ASCII:
1048                 InsertAsciiFile(bv_, cmd.argument, false);
1049                 break;
1050
1051         case LFUN_FONT_STATE:
1052                 cur.message(cur.currentState());
1053                 break;
1054
1055         case LFUN_BOOKMARK_SAVE:
1056                 savePosition(convert<unsigned int>(cmd.argument));
1057                 break;
1058
1059         case LFUN_BOOKMARK_GOTO:
1060                 restorePosition(convert<unsigned int>(cmd.argument));
1061                 break;
1062
1063         case LFUN_REF_GOTO: {
1064                 string label = cmd.argument;
1065                 if (label.empty()) {
1066                         InsetRef * inset =
1067                                 getInsetByCode<InsetRef>(bv_->cursor(),
1068                                                          InsetBase::REF_CODE);
1069                         if (inset) {
1070                                 label = inset->getContents();
1071                                 savePosition(0);
1072                         }
1073                 }
1074
1075                 if (!label.empty())
1076                         bv_->gotoLabel(label);
1077                 break;
1078         }
1079
1080         case LFUN_TRACK_CHANGES:
1081                 trackChanges();
1082                 break;
1083
1084         case LFUN_OUTPUT_CHANGES: {
1085                 Buffer * buf = bv_->buffer();
1086                 bool const state = buf->params().output_changes;
1087                 buf->params().output_changes = !state;
1088                 break;
1089         }
1090
1091         case LFUN_MERGE_CHANGES:
1092                 owner_->getDialogs().show("changes");
1093                 break;
1094
1095         case LFUN_ACCEPT_ALL_CHANGES: {
1096                 bv_->cursor().reset(bv_->buffer()->inset());
1097 #ifdef WITH_WARNINGS
1098 #warning FIXME changes
1099 #endif
1100                 while (lyx::find::findNextChange(bv_))
1101                         bv_->getLyXText()->acceptChange(bv_->cursor());
1102                 update();
1103                 break;
1104         }
1105
1106         case LFUN_REJECT_ALL_CHANGES: {
1107                 bv_->cursor().reset(bv_->buffer()->inset());
1108 #ifdef WITH_WARNINGS
1109 #warning FIXME changes
1110 #endif
1111                 while (lyx::find::findNextChange(bv_))
1112                         bv_->getLyXText()->rejectChange(bv_->cursor());
1113                 break;
1114         }
1115
1116         case LFUN_WORD_FIND:
1117                 lyx::find::find(bv_, cmd);
1118                 break;
1119
1120         case LFUN_WORD_REPLACE:
1121                 lyx::find::replace(bv_, cmd);
1122                 break;
1123
1124         case LFUN_MARK_OFF:
1125                 cur.clearSelection();
1126                 cur.resetAnchor();
1127                 cur.message(N_("Mark off"));
1128                 break;
1129
1130         case LFUN_MARK_ON:
1131                 cur.clearSelection();
1132                 cur.mark() = true;
1133                 cur.resetAnchor();
1134                 cur.message(N_("Mark on"));
1135                 break;
1136
1137         case LFUN_SETMARK:
1138                 cur.clearSelection();
1139                 if (cur.mark()) {
1140                         cur.mark() = false;
1141                         cur.message(N_("Mark removed"));
1142                 } else {
1143                         cur.mark() = true;
1144                         cur.message(N_("Mark set"));
1145                 }
1146                 cur.resetAnchor();
1147                 break;
1148
1149         case LFUN_CENTER:
1150                 bv_->center();
1151                 break;
1152
1153         case LFUN_WORDS_COUNT: {
1154                 DocIterator from, to;
1155                 if (cur.selection()) {
1156                         from = cur.selectionBegin();
1157                         to = cur.selectionEnd();
1158                 } else {
1159                         from = doc_iterator_begin(bv_->buffer()->inset());
1160                         to = doc_iterator_end(bv_->buffer()->inset());
1161                 }
1162                 int const count = countWords(from, to);
1163                 string message;
1164                 if (count != 1) {
1165                         if (cur.selection())
1166                                 message = bformat(_("%1$d words in selection."),
1167                                           count);
1168                                 else
1169                                         message = bformat(_("%1$d words in document."),
1170                                                           count);
1171                 }
1172                 else {
1173                         if (cur.selection())
1174                                 message = _("One word in selection.");
1175                         else
1176                                 message = _("One word in document.");
1177                 }
1178
1179                 Alert::information(_("Count words"), message);
1180         }
1181                 break;
1182         default:
1183                 return false;
1184         }
1185
1186         return true;
1187 }
1188
1189
1190 ViewMetricsInfo BufferView::Pimpl::metrics()
1191 {
1192         // remove old position cache
1193         theCoords.clear();
1194         BufferView & bv = *bv_;
1195         LyXText * const text = bv.text();
1196         if (anchor_ref_ > int(text->paragraphs().size() - 1)) {
1197                 anchor_ref_ = int(text->paragraphs().size() - 1);
1198                 offset_ref_ = 0;
1199         }
1200
1201         lyx::pit_type const pit = anchor_ref_;
1202         int pit1 = pit;
1203         int pit2 = pit;
1204         size_t npit = text->paragraphs().size();
1205         lyxerr << "npit: " << npit << " pit1: " << pit1
1206                 << " pit2: " << pit2 << endl;
1207
1208         // rebreak anchor par
1209         text->redoParagraph(pit);
1210         int y0 = text->getPar(pit1).ascent() - offset_ref_;
1211
1212         // redo paragraphs above cursor if necessary
1213         int y1 = y0;
1214         while (y1 > 0 && pit1 > 0) {
1215                 y1 -= text->getPar(pit1).ascent();
1216                 --pit1;
1217                 text->redoParagraph(pit1);
1218                 y1 -= text->getPar(pit1).descent();
1219         }
1220
1221
1222         // take care of ascent of first line
1223         y1 -= text->getPar(pit1).ascent();
1224
1225         //normalize anchor for next time
1226         anchor_ref_ = pit1;
1227         offset_ref_ = -y1;
1228
1229         // grey at the beginning is ugly
1230         if (pit1 == 0 && y1 > 0) {
1231                 y0 -= y1;
1232                 y1 = 0;
1233                 anchor_ref_ = 0;
1234         }
1235
1236         // redo paragraphs below cursor if necessary
1237         int y2 = y0;
1238         while (y2 < bv.workHeight() && pit2 < int(npit) - 1) {
1239                 y2 += text->getPar(pit2).descent();
1240                 ++pit2;
1241                 text->redoParagraph(pit2);
1242                 y2 += text->getPar(pit2).ascent();
1243         }
1244
1245         // take care of descent of last line
1246         y2 += text->getPar(pit2).descent();
1247
1248         // the coordinates of all these paragraphs are correct, cache them
1249         int y = y1;
1250         for (lyx::pit_type pit = pit1; pit <= pit2; ++pit) {
1251                 y += text->getPar(pit).ascent();
1252                 theCoords.parPos()[text][pit] = Point(0, y);
1253                 y += text->getPar(pit).descent();
1254         }
1255
1256         lyxerr << "bv:metrics:  y1: " << y1 << " y2: " << y2 << endl;
1257         return ViewMetricsInfo(pit1, pit2, y1, y2);
1258 }