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