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