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 Braustein
   8  * \author Lars Gullik Bjønnes
   9  * \author Jean-Marc Lasgouttes
  10  * \author Angus Leeming
  11  * \author John Levon
  12  * \author André Pönitz
  13  * \author Dekel Tsur
  14  * \author Jürgen Vigna
  15  *
  16  * Full author contact details are available in file CREDITS.
  17  */
  18
  19 #include <config.h>
  20
  21 #include "BufferView_pimpl.h"
  22 #include "buffer.h"
  23 #include "buffer_funcs.h"
  24 #include "bufferlist.h"
  25 #include "bufferparams.h"
  26 #include "cursor.h"
  27 #include "debug.h"
  28 #include "factory.h"
  29 #include "FloatList.h"
  30 #include "funcrequest.h"
  31 #include "gettext.h"
  32 #include "intl.h"
  33 #include "iterators.h"
  34 #include "lyx_cb.h" // added for Dispatch functions
  35 #include "lyx_main.h"
  36 #include "lyxfind.h"
  37 #include "lyxfunc.h"
  38 #include "lyxtext.h"
  39 #include "lyxrc.h"
  40 #include "lastfiles.h"
  41 #include "paragraph.h"
  42 #include "paragraph_funcs.h"
  43 #include "ParagraphParameters.h"
  44 #include "TextCache.h"
  45 #include "undo_funcs.h"
  46 #include "vspace.h"
  47
  48 #include "insets/insetfloatlist.h"
  49 #include "insets/insetref.h"
  50
  51 #include "frontends/Alert.h"
  52 #include "frontends/Dialogs.h"
  53 #include "frontends/FileDialog.h"
  54 #include "frontends/LyXView.h"
  55 #include "frontends/LyXScreenFactory.h"
  56 #include "frontends/screen.h"
  57 #include "frontends/WorkArea.h"
  58 #include "frontends/WorkAreaFactory.h"
  59
  60 #include "graphics/Previews.h"
  61
  62 #include "mathed/formulabase.h"
  63
  64 #include "support/filetools.h"
  65 #include "support/path_defines.h"
  66 #include "support/tostr.h"
  67
  68 #include <boost/bind.hpp>
  69
  70 using bv_funcs::bold;
  71 using bv_funcs::code;
  72 using bv_funcs::currentState;
  73 using bv_funcs::emph;
  74 using bv_funcs::fontSize;
  75 using bv_funcs::lang;
  76 using bv_funcs::noun;
  77 using bv_funcs::roman;
  78 using bv_funcs::sans;
  79 using bv_funcs::styleReset;
  80 using bv_funcs::underline;
  81
  82 using lyx::pos_type;
  83
  84 using lyx::support::AddPath;
  85 using lyx::support::bformat;
  86 using lyx::support::FileSearch;
  87 using lyx::support::IsDirWriteable;
  88 using lyx::support::MakeDisplayPath;
  89 using lyx::support::strToUnsignedInt;
  90 using lyx::support::system_lyxdir;
  91
  92 using std::endl;
  93 using std::make_pair;
  94 using std::min;
  95 using std::string;
  96
  97
  98 extern BufferList bufferlist;
  99
 100
 101 namespace {
 102
 103 unsigned int const saved_positions_num = 20;
 104
 105 // All the below connection objects are needed because of a bug in some
 106 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
 107 // to these connections we avoid a segfault upon startup, and also at exit.
 108 // (Lgb)
 109
 110 boost::signals::connection dispatchcon;
 111 boost::signals::connection timecon;
 112 boost::signals::connection doccon;
 113 boost::signals::connection resizecon;
 114 boost::signals::connection kpresscon;
 115 boost::signals::connection selectioncon;
 116 boost::signals::connection lostcon;
 117
 118
 119 } // anon namespace
 120
 121
 122 BufferView::Pimpl::Pimpl(BufferView * bv, LyXView * owner,
 123              int xpos, int ypos, int width, int height)
 124         : bv_(bv), owner_(owner), buffer_(0), cursor_timeout(400),
 125           using_xterm_cursor(false)
 126 {
 127         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 128         screen_.reset(LyXScreenFactory::create(workarea()));
 129
 130         // Setup the signals
 131         doccon = workarea().scrollDocView
 132                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 133         resizecon = workarea().workAreaResize
 134                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 135         dispatchcon = workarea().dispatch
 136                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 137         kpresscon = workarea().workAreaKeyPress
 138                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 139         selectioncon = workarea().selectionRequested
 140                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 141         lostcon = workarea().selectionLost
 142                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 143
 144         timecon = cursor_timeout.timeout
 145                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 146         cursor_timeout.start();
 147         saved_positions.resize(saved_positions_num);
 148 }
 149
 150
 151 void BufferView::Pimpl::addError(ErrorItem const & ei)
 152 {
 153         errorlist_.push_back(ei);
 154 }
 155
 156
 157 void BufferView::Pimpl::showReadonly(bool)
 158 {
 159         owner_->updateWindowTitle();
 160         owner_->getDialogs().updateBufferDependent(false);
 161 }
 162
 163
 164 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 165 {
 166         if (errorConnection_.connected())
 167                 disconnectBuffer();
 168
 169         errorConnection_ = buf.error.connect(boost::bind(&BufferView::Pimpl::addError, this, _1));
 170         messageConnection_ = buf.message.connect(boost::bind(&LyXView::message, owner_, _1));
 171         busyConnection_ = buf.busy.connect(boost::bind(&LyXView::busy, owner_, _1));
 172         titleConnection_ = buf.updateTitles.connect(boost::bind(&LyXView::updateWindowTitle, owner_));
 173         timerConnection_ = buf.resetAutosaveTimers.connect(boost::bind(&LyXView::resetAutosaveTimer, owner_));
 174         readonlyConnection_ = buf.readonly.connect(boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 175         closingConnection_ = buf.closing.connect(boost::bind(&BufferView::Pimpl::buffer, this, (Buffer *)0));
 176 }
 177
 178
 179 void BufferView::Pimpl::disconnectBuffer()
 180 {
 181         errorConnection_.disconnect();
 182         messageConnection_.disconnect();
 183         busyConnection_.disconnect();
 184         titleConnection_.disconnect();
 185         timerConnection_.disconnect();
 186         readonlyConnection_.disconnect();
 187         closingConnection_.disconnect();
 188 }
 189
 190
 191 bool BufferView::Pimpl::newFile(string const & filename,
 192                                 string const & tname,
 193                                 bool isNamed)
 194 {
 195         Buffer * b = ::newFile(filename, tname, isNamed);
 196         buffer(b);
 197         return true;
 198 }
 199
 200
 201 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 202 {
 203         // get absolute path of file and add ".lyx" to the filename if
 204         // necessary
 205         string s = FileSearch(string(), filename, "lyx");
 206
 207         bool const found = !s.empty();
 208
 209         if (!found)
 210                 s = filename;
 211
 212         // file already open?
 213         if (bufferlist.exists(s)) {
 214                 string const file = MakeDisplayPath(s, 20);
 215                 string text = bformat(_("The document %1$s is already "
 216                                         "loaded.\n\nDo you want to revert "
 217                                         "to the saved version?"), file);
 218                 int const ret = Alert::prompt(_("Revert to saved document?"),
 219                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 220
 221                 if (ret != 0) {
 222                         buffer(bufferlist.getBuffer(s));
 223                         return true;
 224                 } else {
 225                         // FIXME: should be LFUN_REVERT
 226                         if (!bufferlist.close(bufferlist.getBuffer(s), false))
 227                                 return false;
 228                         // Fall through to new load. (Asger)
 229                 }
 230         }
 231
 232         Buffer * b;
 233
 234         if (found) {
 235                 b = bufferlist.newBuffer(s);
 236                 connectBuffer(*b);
 237                 if (!::loadLyXFile(b, s)) {
 238                         bufferlist.release(b);
 239                         return false;
 240                 }
 241         } else {
 242                 string text = bformat(_("The document %1$s does not yet "
 243                                         "exist.\n\nDo you want to create "
 244                                         "a new document?"), s);
 245                 int const ret = Alert::prompt(_("Create new document?"),
 246                          text, 0, 1, _("&Create"), _("Cancel"));
 247
 248                 if (ret == 0)
 249                         b = ::newFile(s, string(), true);
 250                 else
 251                         return false;
 252         }
 253
 254         buffer(b);
 255         bv_->showErrorList(_("Parse"));
 256
 257         if (tolastfiles)
 258                 lastfiles->newFile(b->fileName());
 259
 260         return true;
 261 }
 262
 263
 264 WorkArea & BufferView::Pimpl::workarea() const
 265 {
 266         return *workarea_.get();
 267 }
 268
 269
 270 LyXScreen & BufferView::Pimpl::screen() const
 271 {
 272         return *screen_.get();
 273 }
 274
 275
 276 Painter & BufferView::Pimpl::painter() const
 277 {
 278         return workarea().getPainter();
 279 }
 280
 281
 282 void BufferView::Pimpl::top_y(int y)
 283 {
 284         top_y_ = y;
 285 }
 286
 287
 288 int BufferView::Pimpl::top_y() const
 289 {
 290         return top_y_;
 291 }
 292
 293
 294 void BufferView::Pimpl::buffer(Buffer * b)
 295 {
 296         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 297                             << b << ')' << endl;
 298         if (buffer_) {
 299                 disconnectBuffer();
 300                 // Put the old text into the TextCache, but
 301                 // only if the buffer is still loaded.
 302                 // Also set the owner of the test to 0
 303                 //              bv_->text->owner(0);
 304                 textcache.add(buffer_, workarea().workWidth(), bv_->text);
 305                 if (lyxerr.debugging())
 306                         textcache.show(lyxerr, "BufferView::buffer");
 307
 308                 bv_->text = 0;
 309         }
 310
 311         // set current buffer
 312         buffer_ = b;
 313
 314         top_y_ = 0;
 315
 316         // if we're quitting lyx, don't bother updating stuff
 317         if (quitting)
 318                 return;
 319
 320         // if we are closing the buffer, use the first buffer as current
 321         if (!buffer_)
 322                 buffer_ = bufferlist.first();
 323
 324         if (buffer_) {
 325                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 326                 connectBuffer(*buffer_);
 327
 328                 // If we don't have a text object for this, we make one
 329                 if (bv_->text == 0)
 330                         resizeCurrentBuffer();
 331
 332                 // FIXME: needed when ?
 333                 top_y(screen().topCursorVisible(bv_->text));
 334
 335                 // Buffer-dependent dialogs should be updated or
 336                 // hidden. This should go here because some dialogs (eg ToC)
 337                 // require bv_->text.
 338                 owner_->getDialogs().updateBufferDependent(true);
 339         } else {
 340                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 341                 owner_->getDialogs().hideBufferDependent();
 342
 343                 // Also remove all remaining text's from the testcache.
 344                 // (there should not be any!) (if there is any it is a
 345                 // bug!)
 346                 if (lyxerr.debugging())
 347                         textcache.show(lyxerr, "buffer delete all");
 348                 textcache.clear();
 349         }
 350
 351         update();
 352         updateScrollbar();
 353         owner_->updateMenubar();
 354         owner_->updateToolbar();
 355         owner_->updateLayoutChoice();
 356         owner_->updateWindowTitle();
 357
 358         if (buffer_) {
 359                 // Don't forget to update the Layout
 360                 string const layoutname =
 361                         bv_->text->cursor.par()->layout()->name();
 362                 owner_->setLayout(layoutname);
 363         }
 364
 365         if (lyx::graphics::Previews::activated() && buffer_)
 366                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 367 }
 368
 369
 370 bool BufferView::Pimpl::fitCursor()
 371 {
 372         bool ret;
 373
 374         if (bv_->theLockingInset()) {
 375                 bv_->theLockingInset()->fitInsetCursor(bv_);
 376                 ret = true;
 377         } else {
 378                 ret = screen().fitCursor(bv_->text, bv_);
 379         }
 380
 381         //dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
 382
 383         // We need to always update, in case we did a
 384         // paste and we stayed anchored to a row, but
 385         // the actual height of the doc changed ...
 386         updateScrollbar();
 387         return ret;
 388 }
 389
 390
 391 void BufferView::Pimpl::redoCurrentBuffer()
 392 {
 393         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 394         if (buffer_ && bv_->text) {
 395                 resizeCurrentBuffer();
 396                 updateScrollbar();
 397                 owner_->updateLayoutChoice();
 398                 update();
 399         }
 400 }
 401
 402
 403 void BufferView::Pimpl::resizeCurrentBuffer()
 404 {
 405         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 406
 407         ParagraphList::iterator par;
 408         ParagraphList::iterator selstartpar;
 409         ParagraphList::iterator selendpar;
 410         UpdatableInset * the_locking_inset = 0;
 411
 412         pos_type pos = 0;
 413         pos_type selstartpos = 0;
 414         pos_type selendpos = 0;
 415         bool selection = false;
 416         bool mark_set  = false;
 417
 418         owner_->busy(true);
 419
 420         owner_->message(_("Formatting document..."));
 421
 422         if (bv_->text) {
 423                 par = bv_->text->cursor.par();
 424                 pos = bv_->text->cursor.pos();
 425                 selstartpar = bv_->text->selection.start.par();
 426                 selstartpos = bv_->text->selection.start.pos();
 427                 selendpar = bv_->text->selection.end.par();
 428                 selendpos = bv_->text->selection.end.pos();
 429                 selection = bv_->text->selection.set();
 430                 mark_set = bv_->text->selection.mark();
 431                 the_locking_inset = bv_->theLockingInset();
 432                 bv_->text->fullRebreak();
 433                 update();
 434         } else {
 435                 lyxerr << "text not available!" << endl;
 436                 // See if we have a text in TextCache that fits
 437                 // the new buffer_ with the correct width.
 438                 bv_->text = textcache.findFit(buffer_, workarea().workWidth());
 439                 if (bv_->text) {
 440                         lyxerr << "text in cache!" << endl;
 441                         if (lyxerr.debugging()) {
 442                                 lyxerr << "Found a LyXText that fits:" << endl;
 443                                 textcache.show(lyxerr, make_pair(buffer_, make_pair(workarea().workWidth(), bv_->text)));
 444                         }
 445                         // Set the owner of the newly found text
 446                         //      bv_->text->owner(bv_);
 447                         if (lyxerr.debugging())
 448                                 textcache.show(lyxerr, "resizeCurrentBuffer");
 449                 } else {
 450                         lyxerr << "no text in cache!" << endl;
 451                         bv_->text = new LyXText(bv_, 0, false, bv_->buffer()->paragraphs());
 452                         bv_->text->init(bv_);
 453                 }
 454
 455                 par = bv_->text->ownerParagraphs().end();
 456                 selstartpar = bv_->text->ownerParagraphs().end();
 457                 selendpar = bv_->text->ownerParagraphs().end();
 458         }
 459
 460 #warning does not help much
 461         //bv_->text->redoParagraphs(bv_->text->ownerParagraphs().begin(),
 462         //      bv_->text->ownerParagraphs().end());
 463
 464         if (par != bv_->text->ownerParagraphs().end()) {
 465                 bv_->text->selection.set(true);
 466                 // At this point just to avoid the Delete-Empty-Paragraph-
 467                 // Mechanism when setting the cursor.
 468                 bv_->text->selection.mark(mark_set);
 469                 if (selection) {
 470                         bv_->text->setCursor(selstartpar, selstartpos);
 471                         bv_->text->selection.cursor = bv_->text->cursor;
 472                         bv_->text->setCursor(selendpar, selendpos);
 473                         bv_->text->setSelection();
 474                         bv_->text->setCursor(par, pos);
 475                 } else {
 476                         bv_->text->setCursor(par, pos);
 477                         bv_->text->selection.cursor = bv_->text->cursor;
 478                         bv_->text->selection.set(false);
 479                 }
 480                 // remake the inset locking
 481                 bv_->theLockingInset(the_locking_inset);
 482         }
 483
 484         top_y(screen().topCursorVisible(bv_->text));
 485
 486         switchKeyMap();
 487         owner_->busy(false);
 488
 489         // reset the "Formatting..." message
 490         owner_->clearMessage();
 491
 492         updateScrollbar();
 493 }
 494
 495
 496 void BufferView::Pimpl::updateScrollbar()
 497 {
 498         if (!bv_->text) {
 499                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 500                 workarea().setScrollbarParams(0, 0, 0);
 501                 return;
 502         }
 503
 504         LyXText const & t = *bv_->text;
 505
 506         lyxerr[Debug::GUI] << "Updating scrollbar: h " << t.height << ", top_y() "
 507                 << top_y() << ", default height " << defaultRowHeight() << endl;
 508
 509         workarea().setScrollbarParams(t.height, top_y(), defaultRowHeight());
 510 }
 511
 512
 513 void BufferView::Pimpl::scrollDocView(int value)
 514 {
 515         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 516
 517         if (!buffer_)
 518                 return;
 519
 520         screen().hideCursor();
 521
 522         top_y(value);
 523         screen().redraw(*bv_);
 524
 525         if (!lyxrc.cursor_follows_scrollbar)
 526                 return;
 527
 528         int const height = defaultRowHeight();
 529         int const first = top_y() + height;
 530         int const last = top_y() + workarea().workHeight() - height;
 531
 532         LyXText * text = bv_->text;
 533         if (text->cursor.y() < first)
 534                 text->setCursorFromCoordinates(0, first);
 535         else if (text->cursor.y() > last)
 536                 text->setCursorFromCoordinates(0, last);
 537
 538         owner_->updateLayoutChoice();
 539 }
 540
 541
 542 void BufferView::Pimpl::scroll(int lines)
 543 {
 544         if (!buffer_) {
 545                 return;
 546         }
 547
 548         LyXText const * t = bv_->text;
 549         int const line_height = defaultRowHeight();
 550
 551         // The new absolute coordinate
 552         int new_top_y = top_y() + lines * line_height;
 553
 554         // Restrict to a valid value
 555         new_top_y = std::min(t->height - 4 * line_height, new_top_y);
 556         new_top_y = std::max(0, new_top_y);
 557
 558         scrollDocView(new_top_y);
 559
 560         // Update the scrollbar.
 561         workarea().setScrollbarParams(t->height, top_y(), defaultRowHeight());
 562 }
 563
 564
 565 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 566                                          key_modifier::state state)
 567 {
 568         bv_->owner()->getLyXFunc().processKeySym(key, state);
 569
 570         /* This is perhaps a bit of a hack. When we move
 571          * around, or type, it's nice to be able to see
 572          * the cursor immediately after the keypress. So
 573          * we reset the toggle timeout and force the visibility
 574          * of the cursor. Note we cannot do this inside
 575          * dispatch() itself, because that's called recursively.
 576          */
 577         if (available()) {
 578                 cursor_timeout.restart();
 579                 screen().showCursor(*bv_);
 580         }
 581 }
 582
 583
 584 void BufferView::Pimpl::selectionRequested()
 585 {
 586         static string sel;
 587
 588         if (!available())
 589                 return;
 590
 591         LyXText * text = bv_->getLyXText();
 592
 593         if (text->selection.set() &&
 594                 (!bv_->text->xsel_cache.set() ||
 595                  text->selection.start != bv_->text->xsel_cache.start ||
 596                  text->selection.end != bv_->text->xsel_cache.end))
 597         {
 598                 bv_->text->xsel_cache = text->selection;
 599                 sel = text->selectionAsString(*bv_->buffer(), false);
 600         } else if (!text->selection.set()) {
 601                 sel = string();
 602                 bv_->text->xsel_cache.set(false);
 603         }
 604         if (!sel.empty()) {
 605                 workarea().putClipboard(sel);
 606         }
 607 }
 608
 609
 610 void BufferView::Pimpl::selectionLost()
 611 {
 612         if (available()) {
 613                 screen().hideCursor();
 614                 bv_->getLyXText()->clearSelection();
 615                 bv_->text->xsel_cache.set(false);
 616         }
 617 }
 618
 619
 620 void BufferView::Pimpl::workAreaResize()
 621 {
 622         static int work_area_width;
 623         static int work_area_height;
 624
 625         bool const widthChange = workarea().workWidth() != work_area_width;
 626         bool const heightChange = workarea().workHeight() != work_area_height;
 627
 628         // update from work area
 629         work_area_width = workarea().workWidth();
 630         work_area_height = workarea().workHeight();
 631
 632         if (buffer_ != 0) {
 633                 if (widthChange) {
 634                         // The visible LyXView need a resize
 635                         resizeCurrentBuffer();
 636
 637                         // Remove all texts from the textcache
 638                         // This is not _really_ what we want to do. What
 639                         // we really want to do is to delete in textcache
 640                         // that does not have a BufferView with matching
 641                         // width, but as long as we have only one BufferView
 642                         // deleting all gives the same result.
 643                         if (lyxerr.debugging())
 644                                 textcache.show(lyxerr, "Expose delete all");
 645                         textcache.clear();
 646                 }
 647         }
 648
 649         if (widthChange || heightChange)
 650                 update();
 651
 652         // always make sure that the scrollbar is sane.
 653         updateScrollbar();
 654         owner_->updateLayoutChoice();
 655 }
 656
 657
 658 void BufferView::Pimpl::update()
 659 {
 660         //lyxerr << "BufferView::update()" << endl;
 661         // fix cursor coordinate cache in case something went wrong
 662         if (bv_->getLyXText()) {
 663                 // check needed to survive LyX startup
 664                 bv_->getLyXText()->redoCursor();
 665         }
 666         screen().redraw(*bv_);
 667 }
 668
 669
 670 // Callback for cursor timer
 671 void BufferView::Pimpl::cursorToggle()
 672 {
 673         if (!buffer_) {
 674                 cursor_timeout.restart();
 675                 return;
 676         }
 677
 678         screen().toggleCursor(*bv_);
 679
 680         cursor_timeout.restart();
 681 }
 682
 683
 684 bool BufferView::Pimpl::available() const
 685 {
 686         if (buffer_ && bv_->text)
 687                 return true;
 688         return false;
 689 }
 690
 691
 692 Change const BufferView::Pimpl::getCurrentChange()
 693 {
 694         if (!bv_->buffer()->params().tracking_changes)
 695                 return Change(Change::UNCHANGED);
 696
 697         LyXText * text = bv_->getLyXText();
 698
 699         if (!text->selection.set())
 700                 return Change(Change::UNCHANGED);
 701
 702         LyXCursor const & cur = text->selection.start;
 703         return cur.par()->lookupChangeFull(cur.pos());
 704 }
 705
 706
 707 void BufferView::Pimpl::beforeChange(LyXText * text)
 708 {
 709         text->clearSelection();
 710 }
 711
 712
 713 void BufferView::Pimpl::savePosition(unsigned int i)
 714 {
 715         if (i >= saved_positions_num)
 716                 return;
 717         saved_positions[i] = Position(buffer_->fileName(),
 718                                       bv_->text->cursor.par()->id(),
 719                                       bv_->text->cursor.pos());
 720         if (i > 0)
 721                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 722 }
 723
 724
 725 void BufferView::Pimpl::restorePosition(unsigned int i)
 726 {
 727         if (i >= saved_positions_num)
 728                 return;
 729
 730         string const fname = saved_positions[i].filename;
 731
 732         beforeChange(bv_->text);
 733
 734         if (fname != buffer_->fileName()) {
 735                 Buffer * b;
 736                 if (bufferlist.exists(fname))
 737                         b = bufferlist.getBuffer(fname);
 738                 else {
 739                         b = bufferlist.newBuffer(fname);
 740                         ::loadLyXFile(b, fname); // don't ask, just load it
 741                 }
 742                 if (b != 0)
 743                         buffer(b);
 744         }
 745
 746         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 747         if (par == buffer_->par_iterator_end())
 748                 return;
 749
 750         bv_->text->setCursor(par.pit(),
 751                              min(par->size(), saved_positions[i].par_pos));
 752
 753         update();
 754         if (i > 0)
 755                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 756 }
 757
 758
 759 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 760 {
 761         if (i >= saved_positions_num)
 762                 return false;
 763
 764         return !saved_positions[i].filename.empty();
 765 }
 766
 767
 768 void BufferView::Pimpl::switchKeyMap()
 769 {
 770         if (!lyxrc.rtl_support)
 771                 return;
 772
 773         LyXText * text = bv_->getLyXText();
 774         if (text->real_current_font.isRightToLeft()
 775             && !(bv_->theLockingInset()
 776                  && bv_->theLockingInset()->lyxCode() == InsetOld::ERT_CODE))
 777         {
 778                 if (owner_->getIntl().keymap == Intl::PRIMARY)
 779                         owner_->getIntl().KeyMapSec();
 780         } else {
 781                 if (owner_->getIntl().keymap == Intl::SECONDARY)
 782                         owner_->getIntl().KeyMapPrim();
 783         }
 784 }
 785
 786
 787 void BufferView::Pimpl::insetUnlock()
 788 {
 789         if (bv_->theLockingInset()) {
 790                 bv_->theLockingInset()->insetUnlock(bv_);
 791                 bv_->theLockingInset(0);
 792                 finishUndo();
 793         }
 794 }
 795
 796
 797 void BufferView::Pimpl::center()
 798 {
 799         LyXText * text = bv_->text;
 800
 801         beforeChange(text);
 802         int const half_height = workarea().workHeight() / 2;
 803         int new_y = std::max(0, text->cursor.y() - half_height);
 804
 805         // FIXME: look at this comment again ...
 806
 807         // FIXME: can we do this w/o calling screen directly ?
 808         // This updates top_y() but means the fitCursor() call
 809         // from the update(FITCUR) doesn't realise that we might
 810         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 811         // the scrollbar to be updated as it should, so we have
 812         // to do it manually. Any operation that does a center()
 813         // and also might have moved top_y() must make sure to call
 814         // updateScrollbar() currently. Never mind that this is a
 815         // pretty obfuscated way of updating t->top_y()
 816         top_y(new_y);
 817         //screen().draw();
 818         update();
 819 }
 820
 821
 822 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 823 {
 824         workarea().putClipboard(stuff);
 825 }
 826
 827
 828 /*
 829  * Dispatch functions for actions which can be valid for BufferView->text
 830  * and/or InsetText->text!!!
 831  */
 832
 833
 834 InsetOld * BufferView::Pimpl::getInsetByCode(InsetOld::Code code)
 835 {
 836 #if 0
 837         LyXCursor cursor = bv_->getLyXText()->cursor;
 838         Buffer::inset_iterator it =
 839                 find_if(Buffer::inset_iterator(
 840                         cursor.par(), cursor.pos()),
 841                         buffer_->inset_iterator_end(),
 842                         lyx::compare_memfun(&Inset::lyxCode, code));
 843         return it != buffer_->inset_iterator_end() ? (*it) : 0;
 844 #else
 845         // Ok, this is a little bit too brute force but it
 846         // should work for now. Better infrastructure is coming. (Lgb)
 847
 848         Buffer * b = bv_->buffer();
 849         LyXCursor cursor = bv_->getLyXText()->cursor;
 850
 851         Buffer::inset_iterator beg = b->inset_iterator_begin();
 852         Buffer::inset_iterator end = b->inset_iterator_end();
 853
 854         bool cursor_par_seen = false;
 855
 856         for (; beg != end; ++beg) {
 857                 if (beg.getPar() == cursor.par()) {
 858                         cursor_par_seen = true;
 859                 }
 860                 if (cursor_par_seen) {
 861                         if (beg.getPar() == cursor.par()
 862                             && beg.getPos() >= cursor.pos()) {
 863                                 break;
 864                         } else if (beg.getPar() != cursor.par()) {
 865                                 break;
 866                         }
 867                 }
 868
 869         }
 870         if (beg != end) {
 871                 // Now find the first inset that matches code.
 872                 for (; beg != end; ++beg) {
 873                         if (beg->lyxCode() == code) {
 874                                 return &(*beg);
 875                         }
 876                 }
 877         }
 878         return 0;
 879 #endif
 880 }
 881
 882
 883 void BufferView::Pimpl::MenuInsertLyXFile(string const & filen)
 884 {
 885         string filename = filen;
 886
 887         if (filename.empty()) {
 888                 // Launch a file browser
 889                 string initpath = lyxrc.document_path;
 890
 891                 if (available()) {
 892                         string const trypath = owner_->buffer()->filePath();
 893                         // If directory is writeable, use this as default.
 894                         if (IsDirWriteable(trypath))
 895                                 initpath = trypath;
 896                 }
 897
 898                 FileDialog fileDlg(_("Select LyX document to insert"),
 899                         LFUN_FILE_INSERT,
 900                         make_pair(string(_("Documents|#o#O")),
 901                                   string(lyxrc.document_path)),
 902                         make_pair(string(_("Examples|#E#e")),
 903                                   string(AddPath(system_lyxdir(), "examples"))));
 904
 905                 FileDialog::Result result =
 906                         fileDlg.open(initpath,
 907                                        _("*.lyx| LyX Documents (*.lyx)"));
 908
 909                 if (result.first == FileDialog::Later)
 910                         return;
 911
 912                 filename = result.second;
 913
 914                 // check selected filename
 915                 if (filename.empty()) {
 916                         owner_->message(_("Canceled."));
 917                         return;
 918                 }
 919         }
 920
 921         // get absolute path of file and add ".lyx" to the filename if
 922         // necessary
 923         filename = FileSearch(string(), filename, "lyx");
 924
 925         string const disp_fn = MakeDisplayPath(filename);
 926         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 927         if (bv_->insertLyXFile(filename))
 928                 owner_->message(bformat(_("Document %1$s inserted."),
 929                                         disp_fn));
 930         else
 931                 owner_->message(bformat(_("Could not insert document %1$s"),
 932                                         disp_fn));
 933 }
 934
 935
 936 void BufferView::Pimpl::trackChanges()
 937 {
 938         Buffer * buf(bv_->buffer());
 939         bool const tracking(buf->params().tracking_changes);
 940
 941         if (!tracking) {
 942                 ParIterator const end = buf->par_iterator_end();
 943                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 944                         it->trackChanges();
 945                 buf->params().tracking_changes = true;
 946
 947                 // we cannot allow undos beyond the freeze point
 948                 buf->undostack().clear();
 949         } else {
 950                 update();
 951                 bv_->text->setCursor(buf->paragraphs().begin(), 0);
 952 #warning changes FIXME
 953                 //moveCursorUpdate(false);
 954
 955                 bool found = lyx::find::findNextChange(bv_);
 956                 if (found) {
 957                         owner_->getDialogs().show("changes");
 958                         return;
 959                 }
 960
 961                 ParIterator const end = buf->par_iterator_end();
 962                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 963                         it->untrackChanges();
 964                 buf->params().tracking_changes = false;
 965         }
 966
 967         buf->redostack().clear();
 968 }
 969
 970
 971 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & ev)
 972 {
 973         switch (ev.action) {
 974         case LFUN_MOUSE_PRESS:
 975         case LFUN_MOUSE_MOTION:
 976         case LFUN_MOUSE_RELEASE:
 977         case LFUN_MOUSE_DOUBLE:
 978         case LFUN_MOUSE_TRIPLE:
 979         {
 980                 // We pass those directly to the Bufferview, since
 981                 // otherwise selection handling breaks down
 982
 983                 // Doesn't go through lyxfunc, so we need to update
 984                 // the layout choice etc. ourselves
 985
 986                 // e.g. Qt mouse press when no buffer
 987                 if (!available())
 988                         return false;
 989
 990                 screen().hideCursor();
 991
 992                 bool const res = dispatch(ev);
 993
 994                 // see workAreaKeyPress
 995                 cursor_timeout.restart();
 996                 screen().showCursor(*bv_);
 997
 998                 // FIXME: we should skip these when selecting
 999                 owner_->updateLayoutChoice();
1000                 owner_->updateToolbar();
1001                 fitCursor();
1002
1003                 // slight hack: this is only called currently when we
1004                 // clicked somewhere, so we force through the display
1005                 // of the new status here.
1006                 owner_->clearMessage();
1007
1008                 return res;
1009         }
1010         default:
1011                 owner_->dispatch(ev);
1012                 return true;
1013         }
1014 }
1015
1016
1017 bool BufferView::Pimpl::dispatch(FuncRequest const & ev_in)
1018 {
1019         // Make sure that the cached BufferView is correct.
1020         FuncRequest ev = ev_in;
1021         ev.setView(bv_);
1022
1023         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
1024                 << " action[" << ev.action << ']'
1025                 << " arg[" << ev.argument << ']'
1026                 << " x[" << ev.x << ']'
1027                 << " y[" << ev.y << ']'
1028                 << " button[" << ev.button() << ']'
1029                 << endl;
1030
1031         LyXTextClass const & tclass = buffer_->params().getLyXTextClass();
1032
1033         switch (ev.action) {
1034
1035         case LFUN_SCROLL_INSET:
1036                 // this is not handled here as this function is only active
1037                 // if we have a locking_inset and that one is (or contains)
1038                 // a tabular-inset
1039                 break;
1040
1041         case LFUN_FILE_INSERT:
1042                 MenuInsertLyXFile(ev.argument);
1043                 break;
1044
1045         case LFUN_FILE_INSERT_ASCII_PARA:
1046                 InsertAsciiFile(bv_, ev.argument, true);
1047                 break;
1048
1049         case LFUN_FILE_INSERT_ASCII:
1050                 InsertAsciiFile(bv_, ev.argument, false);
1051                 break;
1052
1053         case LFUN_LANGUAGE:
1054                 lang(bv_, ev.argument);
1055                 switchKeyMap();
1056                 owner_->view_state_changed();
1057                 break;
1058
1059         case LFUN_EMPH:
1060                 emph(bv_);
1061                 owner_->view_state_changed();
1062                 break;
1063
1064         case LFUN_BOLD:
1065                 bold(bv_);
1066                 owner_->view_state_changed();
1067                 break;
1068
1069         case LFUN_NOUN:
1070                 noun(bv_);
1071                 owner_->view_state_changed();
1072                 break;
1073
1074         case LFUN_CODE:
1075                 code(bv_);
1076                 owner_->view_state_changed();
1077                 break;
1078
1079         case LFUN_SANS:
1080                 sans(bv_);
1081                 owner_->view_state_changed();
1082                 break;
1083
1084         case LFUN_ROMAN:
1085                 roman(bv_);
1086                 owner_->view_state_changed();
1087                 break;
1088
1089         case LFUN_DEFAULT:
1090                 styleReset(bv_);
1091                 owner_->view_state_changed();
1092                 break;
1093
1094         case LFUN_UNDERLINE:
1095                 underline(bv_);
1096                 owner_->view_state_changed();
1097                 break;
1098
1099         case LFUN_FONT_SIZE:
1100                 fontSize(bv_, ev.argument);
1101                 owner_->view_state_changed();
1102                 break;
1103
1104         case LFUN_FONT_STATE:
1105                 owner_->getLyXFunc().setMessage(currentState(bv_));
1106                 break;
1107
1108         case LFUN_INSERT_LABEL: {
1109                 // Try and generate a valid label
1110                 string const contents = ev.argument.empty() ?
1111                         getPossibleLabel(*bv_) : ev.argument;
1112                 InsetCommandParams icp("label", contents);
1113                 string data = InsetCommandMailer::params2string("label", icp);
1114                 owner_->getDialogs().show("label", data, 0);
1115         }
1116         break;
1117
1118         case LFUN_BOOKMARK_SAVE:
1119                 savePosition(strToUnsignedInt(ev.argument));
1120                 break;
1121
1122         case LFUN_BOOKMARK_GOTO:
1123                 restorePosition(strToUnsignedInt(ev.argument));
1124                 break;
1125
1126         case LFUN_REF_GOTO: {
1127                 string label = ev.argument;
1128                 if (label.empty()) {
1129                         InsetRef * inset =
1130                                 static_cast<InsetRef*>(getInsetByCode(InsetOld::REF_CODE));
1131                         if (inset) {
1132                                 label = inset->getContents();
1133                                 savePosition(0);
1134                         }
1135                 }
1136
1137                 if (!label.empty())
1138                         bv_->gotoLabel(label);
1139         }
1140         break;
1141
1142         // --- accented characters ---------------------------
1143
1144         case LFUN_UMLAUT:
1145         case LFUN_CIRCUMFLEX:
1146         case LFUN_GRAVE:
1147         case LFUN_ACUTE:
1148         case LFUN_TILDE:
1149         case LFUN_CEDILLA:
1150         case LFUN_MACRON:
1151         case LFUN_DOT:
1152         case LFUN_UNDERDOT:
1153         case LFUN_UNDERBAR:
1154         case LFUN_CARON:
1155         case LFUN_SPECIAL_CARON:
1156         case LFUN_BREVE:
1157         case LFUN_TIE:
1158         case LFUN_HUNG_UMLAUT:
1159         case LFUN_CIRCLE:
1160         case LFUN_OGONEK:
1161                 if (ev.argument.empty()) {
1162                         // As always...
1163                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1164                 } else {
1165                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1166                         owner_->getIntl().getTransManager()
1167                                 .TranslateAndInsert(ev.argument[0], bv_->getLyXText());
1168                         update();
1169                 }
1170                 break;
1171
1172         case LFUN_MATH_MACRO:
1173         case LFUN_MATH_DELIM:
1174         case LFUN_INSERT_MATRIX:
1175         case LFUN_INSERT_MATH:
1176         case LFUN_MATH_IMPORT_SELECTION: // Imports LaTeX from the X selection
1177         case LFUN_MATH_DISPLAY:          // Open or create a displayed math inset
1178         case LFUN_MATH_MODE:             // Open or create an inlined math inset
1179                 mathDispatch(ev);
1180                 break;
1181
1182         case LFUN_INSET_APPLY: {
1183                 string const name = ev.getArg(0);
1184
1185                 InsetBase * inset = owner_->getDialogs().getOpenInset(name);
1186                 if (inset) {
1187                         // This works both for 'original' and 'mathed' insets.
1188                         // Note that the localDispatch performs updateInset
1189                         // also.
1190                         FuncRequest fr(bv_, LFUN_INSET_MODIFY, ev.argument);
1191                         inset->localDispatch(fr);
1192                 } else {
1193                         FuncRequest fr(bv_, LFUN_INSET_INSERT, ev.argument);
1194                         dispatch(fr);
1195                 }
1196         }
1197         break;
1198
1199         case LFUN_INSET_INSERT: {
1200                 InsetOld * inset = createInset(ev);
1201                 if (inset && insertInset(inset)) {
1202                         updateInset(inset);
1203
1204                         string const name = ev.getArg(0);
1205                         if (name == "bibitem") {
1206                                 // We need to do a redraw because the maximum
1207                                 // InsetBibitem width could have changed
1208 #warning check whether the update() is needed at all
1209                                 bv_->update();
1210                         }
1211                 } else {
1212                         delete inset;
1213                 }
1214         }
1215         break;
1216
1217         case LFUN_FLOAT_LIST:
1218                 if (tclass.floats().typeExist(ev.argument)) {
1219                         InsetOld * inset = new InsetFloatList(ev.argument);
1220                         if (!insertInset(inset, tclass.defaultLayoutName()))
1221                                 delete inset;
1222                 } else {
1223                         lyxerr << "Non-existent float type: "
1224                                << ev.argument << endl;
1225                 }
1226                 break;
1227
1228         case LFUN_LAYOUT_PARAGRAPH: {
1229                 string data;
1230                 params2string(*bv_->getLyXText()->cursor.par(), data);
1231
1232                 data = "show\n" + data;
1233                 bv_->owner()->getDialogs().show("paragraph", data);
1234                 break;
1235         }
1236
1237         case LFUN_PARAGRAPH_UPDATE: {
1238                 if (!bv_->owner()->getDialogs().visible("paragraph"))
1239                         break;
1240                 Paragraph const & par = *bv_->getLyXText()->cursor.par();
1241
1242                 string data;
1243                 params2string(par, data);
1244
1245                 // Will the paragraph accept changes from the dialog?
1246                 InsetOld * const inset = par.inInset();
1247                 bool const accept =
1248                         !(inset && inset->forceDefaultParagraphs(inset));
1249
1250                 data = "update " + tostr(accept) + '\n' + data;
1251                 bv_->owner()->getDialogs().update("paragraph", data);
1252                 break;
1253         }
1254
1255         case LFUN_PARAGRAPH_APPLY:
1256                 setParagraphParams(*bv_, ev.argument);
1257                 break;
1258
1259         case LFUN_THESAURUS_ENTRY:
1260         {
1261                 string arg = ev.argument;
1262
1263                 if (arg.empty()) {
1264                         arg = bv_->getLyXText()->selectionAsString(*buffer_,
1265                                                                    false);
1266
1267                         // FIXME
1268                         if (arg.size() > 100 || arg.empty()) {
1269                                 // Get word or selection
1270                                 bv_->getLyXText()->selectWordWhenUnderCursor(lyx::WHOLE_WORD);
1271                                 arg = bv_->getLyXText()->selectionAsString(*buffer_, false);
1272                                 // FIXME: where is getLyXText()->unselect(bv_) ?
1273                         }
1274                 }
1275
1276                 bv_->owner()->getDialogs().show("thesaurus", arg);
1277         }
1278                 break;
1279
1280         case LFUN_TRACK_CHANGES:
1281                 trackChanges();
1282                 break;
1283
1284         case LFUN_MERGE_CHANGES:
1285                 owner_->getDialogs().show("changes");
1286                 break;
1287
1288         case LFUN_ACCEPT_ALL_CHANGES: {
1289                 bv_->text->setCursor(bv_->buffer()->paragraphs().begin(), 0);
1290 #warning FIXME changes
1291                 //moveCursorUpdate(false);
1292
1293                 while (lyx::find::findNextChange(bv_))
1294                         bv_->getLyXText()->acceptChange();
1295
1296                 update();
1297                 break;
1298         }
1299
1300         case LFUN_REJECT_ALL_CHANGES: {
1301                 bv_->text->setCursor(bv_->buffer()->paragraphs().begin(), 0);
1302 #warning FIXME changes
1303                 //moveCursorUpdate(false);
1304
1305                 while (lyx::find::findNextChange(bv_))
1306                         bv_->getLyXText()->rejectChange();
1307
1308                 update();
1309                 break;
1310         }
1311
1312         case LFUN_ACCEPT_CHANGE: {
1313                 bv_->getLyXText()->acceptChange();
1314                 update();
1315                 break;
1316         }
1317
1318         case LFUN_REJECT_CHANGE: {
1319                 bv_->getLyXText()->rejectChange();
1320                 update();
1321                 break;
1322         }
1323
1324         case LFUN_UNKNOWN_ACTION:
1325                 ev.errorMessage(N_("Unknown function!"));
1326                 break;
1327
1328         default:
1329                 return bv_->getLyXText()->dispatch(FuncRequest(ev, bv_));
1330         } // end of switch
1331
1332         return true;
1333 }
1334
1335
1336 bool BufferView::Pimpl::insertInset(InsetOld * inset, string const & lout)
1337 {
1338         // if we are in a locking inset we should try to insert the
1339         // inset there otherwise this is a illegal function now
1340         if (bv_->theLockingInset()) {
1341                 if (bv_->theLockingInset()->insetAllowed(inset))
1342                         return bv_->theLockingInset()->insertInset(bv_, inset);
1343                 return false;
1344         }
1345
1346         // not quite sure if we want this...
1347         recordUndo(bv_, Undo::ATOMIC);
1348         freezeUndo();
1349
1350         beforeChange(bv_->text);
1351         if (!lout.empty()) {
1352                 bv_->text->breakParagraph(bv_->buffer()->paragraphs());
1353
1354                 if (!bv_->text->cursor.par()->empty()) {
1355                         bv_->text->cursorLeft(bv_);
1356                         bv_->text->breakParagraph(bv_->buffer()->paragraphs());
1357                 }
1358
1359                 string lres = lout;
1360                 LyXTextClass const & tclass = buffer_->params().getLyXTextClass();
1361                 bool hasLayout = tclass.hasLayout(lres);
1362                 string lay = tclass.defaultLayoutName();
1363
1364                 if (hasLayout != false) {
1365                         // layout found
1366                         lay = lres;
1367                 } else {
1368                         // layout not fount using default
1369                         lay = tclass.defaultLayoutName();
1370                 }
1371
1372                 bv_->text->setLayout(lay);
1373
1374                 bv_->text->setParagraph(0, 0,
1375                                    0, 0,
1376                                    VSpace(VSpace::NONE), VSpace(VSpace::NONE),
1377                                    Spacing(),
1378                                    LYX_ALIGN_LAYOUT,
1379                                    string(),
1380                                    0);
1381         }
1382
1383         bv_->text->insertInset(inset);
1384         update();
1385
1386         unFreezeUndo();
1387         return true;
1388 }
1389
1390
1391 void BufferView::Pimpl::updateInset(InsetOld const * inset)
1392 {
1393         if (!available())
1394                 return;
1395
1396         bv_->text->redoParagraph(outerPar(*bv_->buffer(), inset));
1397
1398         // this should not be needed, but it is...
1399         // bv_->text->redoParagraph(bv_->text->cursor.par());
1400         // bv_->text->fullRebreak();
1401
1402         update();
1403         updateScrollbar();
1404 }
1405
1406
1407 bool BufferView::Pimpl::ChangeInsets(InsetOld::Code code,
1408                                      string const & from, string const & to)
1409 {
1410         bool need_update = false;
1411         LyXCursor cursor = bv_->text->cursor;
1412         LyXCursor tmpcursor = cursor;
1413         cursor.par(tmpcursor.par());
1414         cursor.pos(tmpcursor.pos());
1415
1416         ParIterator end = bv_->buffer()->par_iterator_end();
1417         for (ParIterator it = bv_->buffer()->par_iterator_begin();
1418              it != end; ++it) {
1419                 bool changed_inset = false;
1420                 for (InsetList::iterator it2 = it->insetlist.begin();
1421                      it2 != it->insetlist.end(); ++it2) {
1422                         if (it2->inset->lyxCode() == code) {
1423                                 InsetCommand * inset = static_cast<InsetCommand *>(it2->inset);
1424                                 if (inset->getContents() == from) {
1425                                         inset->setContents(to);
1426                                         changed_inset = true;
1427                                 }
1428                         }
1429                 }
1430                 if (changed_inset) {
1431                         need_update = true;
1432
1433                         // FIXME
1434
1435                         // The test it.size()==1 was needed to prevent crashes.
1436                         // How to set the cursor corretly when it.size()>1 ??
1437                         if (it.size() == 1) {
1438                                 bv_->text->setCursorIntern(it.pit(), 0);
1439                                 bv_->text->redoParagraph(bv_->text->cursor.par());
1440                         }
1441                 }
1442         }
1443         bv_->text->setCursorIntern(cursor.par(), cursor.pos());
1444         return need_update;
1445 }