src/BufferView_pimpl.C

   1 /**
   2  * \file BufferView_pimpl.C
   3  * Copyright 2002 the LyX Team
   4  * Read the file COPYING
   5  *
   6  * \author Lars Gullik Bjønnes
   7  * \author various
   8  */
   9
  10 #include <config.h>
  11
  12 #include "BufferView_pimpl.h"
  13 #include "bufferlist.h"
  14 #include "buffer.h"
  15 #include "buffer_funcs.h"
  16 #include "bufferview_funcs.h"
  17 #include "lfuns.h"
  18 #include "debug.h"
  19 #include "factory.h"
  20 #include "FloatList.h"
  21 #include "funcrequest.h"
  22 #include "gettext.h"
  23 #include "intl.h"
  24 #include "iterators.h"
  25 #include "Lsstream.h"
  26 #include "lyx_cb.h" // added for Dispatch functions
  27 #include "lyx_main.h"
  28 #include "lyxfind.h"
  29 #include "lyxfunc.h"
  30 #include "lyxtext.h"
  31 #include "lyxrc.h"
  32 #include "lastfiles.h"
  33 #include "paragraph.h"
  34 #include "ParagraphParameters.h"
  35 #include "TextCache.h"
  36 #include "undo_funcs.h"
  37
  38 #include "insets/insetfloatlist.h"
  39 #include "insets/insetgraphics.h"
  40 #include "insets/insetinclude.h"
  41 #include "insets/insetref.h"
  42 #include "insets/insettext.h"
  43
  44 #include "frontends/Alert.h"
  45 #include "frontends/Dialogs.h"
  46 #include "frontends/FileDialog.h"
  47 #include "frontends/LyXView.h"
  48 #include "frontends/LyXScreenFactory.h"
  49 #include "frontends/mouse_state.h"
  50 #include "frontends/screen.h"
  51 #include "frontends/WorkArea.h"
  52 #include "frontends/WorkAreaFactory.h"
  53
  54 #include "mathed/formulabase.h"
  55
  56 #include "graphics/Previews.h"
  57
  58 #include "support/LAssert.h"
  59 #include "support/tostr.h"
  60 #include "support/filetools.h"
  61 #include "support/path_defines.h"
  62
  63 #include <boost/bind.hpp>
  64 #include <boost/signals/connection.hpp>
  65
  66 #include <unistd.h>
  67 #include <sys/wait.h>
  68
  69
  70 using std::vector;
  71 using std::find_if;
  72 using std::find;
  73 using std::pair;
  74 using std::endl;
  75 using std::make_pair;
  76 using std::min;
  77
  78 using lyx::pos_type;
  79 using namespace lyx::support;
  80 using namespace bv_funcs;
  81
  82 extern BufferList bufferlist;
  83
  84
  85 namespace {
  86
  87 unsigned int const saved_positions_num = 20;
  88
  89 // All the below connection objects are needed because of a bug in some
  90 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
  91 // to these connections we avoid a segfault upon startup, and also at exit.
  92 // (Lgb)
  93
  94 boost::signals::connection dispatchcon;
  95 boost::signals::connection timecon;
  96 boost::signals::connection doccon;
  97 boost::signals::connection resizecon;
  98 boost::signals::connection kpresscon;
  99 boost::signals::connection selectioncon;
 100 boost::signals::connection lostcon;
 101
 102
 103 } // anon namespace
 104
 105
 106 BufferView::Pimpl::Pimpl(BufferView * bv, LyXView * owner,
 107              int xpos, int ypos, int width, int height)
 108         : bv_(bv), owner_(owner), buffer_(0), cursor_timeout(400),
 109           using_xterm_cursor(false)
 110 {
 111         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 112         screen_.reset(LyXScreenFactory::create(workarea()));
 113
 114         // Setup the signals
 115         doccon = workarea().scrollDocView
 116                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 117         resizecon = workarea().workAreaResize
 118                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 119         dispatchcon = workarea().dispatch
 120                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 121         kpresscon = workarea().workAreaKeyPress
 122                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 123         selectioncon = workarea().selectionRequested
 124                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 125         lostcon = workarea().selectionLost
 126                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 127
 128         timecon = cursor_timeout.timeout
 129                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 130         cursor_timeout.start();
 131         saved_positions.resize(saved_positions_num);
 132 }
 133
 134
 135 void BufferView::Pimpl::addError(ErrorItem const & ei)
 136 {
 137         errorlist_.push_back(ei);
 138 }
 139
 140
 141 void BufferView::Pimpl::showReadonly(bool)
 142 {
 143         owner_->updateWindowTitle();
 144         owner_->getDialogs().updateBufferDependent(false);
 145 }
 146
 147
 148 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 149 {
 150         if (errorConnection_.connected())
 151                 disconnectBuffer();
 152
 153         errorConnection_ = buf.error.connect(boost::bind(&BufferView::Pimpl::addError, this, _1));
 154         messageConnection_ = buf.message.connect(boost::bind(&LyXView::message, owner_, _1));
 155         busyConnection_ = buf.busy.connect(boost::bind(&LyXView::busy, owner_, _1));
 156         titleConnection_ = buf.updateTitles.connect(boost::bind(&LyXView::updateWindowTitle, owner_));
 157         timerConnection_ = buf.resetAutosaveTimers.connect(boost::bind(&LyXView::resetAutosaveTimer, owner_));
 158         readonlyConnection_ = buf.readonly.connect(boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 159         closingConnection_ = buf.closing.connect(boost::bind(&BufferView::Pimpl::buffer, this, (Buffer *)0));
 160 }
 161
 162
 163 void BufferView::Pimpl::disconnectBuffer()
 164 {
 165         errorConnection_.disconnect();
 166         messageConnection_.disconnect();
 167         busyConnection_.disconnect();
 168         titleConnection_.disconnect();
 169         timerConnection_.disconnect();
 170         readonlyConnection_.disconnect();
 171         closingConnection_.disconnect();
 172 }
 173
 174
 175 bool BufferView::Pimpl::newFile(string const & filename,
 176                                 string const & tname,
 177                                 bool isNamed)
 178 {
 179         Buffer * b = ::newFile(filename, tname, isNamed);
 180         buffer(b);
 181         return true;
 182 }
 183
 184
 185 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 186 {
 187         // get absolute path of file and add ".lyx" to the filename if
 188         // necessary
 189         string s = FileSearch(string(), filename, "lyx");
 190
 191         bool const found = !s.empty();
 192
 193         if (!found)
 194                 s = filename;
 195
 196         // file already open?
 197         if (bufferlist.exists(s)) {
 198                 string const file = MakeDisplayPath(s, 20);
 199                 string text = bformat(_("The document %1$s is already "
 200                                         "loaded.\n\nDo you want to revert "
 201                                         "to the saved version?"), file);
 202                 int const ret = Alert::prompt(_("Revert to saved document?"),
 203                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 204
 205                 if (ret != 0) {
 206                         buffer(bufferlist.getBuffer(s));
 207                         return true;
 208                 } else {
 209                         // FIXME: should be LFUN_REVERT
 210                         if (!bufferlist.close(bufferlist.getBuffer(s), false))
 211                                 return false;
 212                         // Fall through to new load. (Asger)
 213                 }
 214         }
 215
 216         Buffer * b;
 217
 218         if (found) {
 219                 b = bufferlist.newBuffer(s);
 220                 connectBuffer(*b);
 221                 if (!::loadLyXFile(b, s)) {
 222                         bufferlist.release(b);
 223                         return false;
 224                 }
 225         } else {
 226                 string text = bformat(_("The document %1$s does not yet "
 227                                         "exist.\n\nDo you want to create "
 228                                         "a new document?"), s);
 229                 int const ret = Alert::prompt(_("Create new document?"),
 230                          text, 0, 1, _("&Create"), _("Cancel"));
 231
 232                 if (ret == 0)
 233                         b = ::newFile(s, string(), true);
 234                 else
 235                         return false;
 236         }
 237
 238         buffer(b);
 239         bv_->showErrorList(_("Parse"));
 240
 241         if (tolastfiles)
 242                 lastfiles->newFile(b->fileName());
 243
 244         return true;
 245 }
 246
 247
 248 WorkArea & BufferView::Pimpl::workarea() const
 249 {
 250         return *workarea_.get();
 251 }
 252
 253
 254 LyXScreen & BufferView::Pimpl::screen() const
 255 {
 256         return *screen_.get();
 257 }
 258
 259
 260 Painter & BufferView::Pimpl::painter() const
 261 {
 262         return workarea().getPainter();
 263 }
 264
 265
 266 void BufferView::Pimpl::buffer(Buffer * b)
 267 {
 268         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 269                             << b << ')' << endl;
 270         if (buffer_) {
 271                 disconnectBuffer();
 272                 // Put the old text into the TextCache, but
 273                 // only if the buffer is still loaded.
 274                 // Also set the owner of the test to 0
 275                 //              bv_->text->owner(0);
 276                 textcache.add(buffer_, workarea().workWidth(), bv_->text);
 277                 if (lyxerr.debugging())
 278                         textcache.show(lyxerr, "BufferView::buffer");
 279
 280                 bv_->text = 0;
 281         }
 282
 283         // set current buffer
 284         buffer_ = b;
 285
 286         // if we're quitting lyx, don't bother updating stuff
 287         if (quitting)
 288                 return;
 289
 290         // if we are closing the buffer, use the first buffer as current
 291         if (!buffer_)
 292                 buffer_ = bufferlist.first();
 293
 294         if (buffer_) {
 295                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 296                 connectBuffer(*buffer_);
 297
 298                 // If we don't have a text object for this, we make one
 299                 if (bv_->text == 0)
 300                         resizeCurrentBuffer();
 301
 302                 // FIXME: needed when ?
 303                 bv_->text->top_y(screen().topCursorVisible(bv_->text));
 304
 305                 // Buffer-dependent dialogs should be updated or
 306                 // hidden. This should go here because some dialogs (eg ToC)
 307                 // require bv_->text.
 308                 owner_->getDialogs().updateBufferDependent(true);
 309         } else {
 310                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 311                 owner_->getDialogs().hideBufferDependent();
 312
 313                 // Also remove all remaining text's from the testcache.
 314                 // (there should not be any!) (if there is any it is a
 315                 // bug!)
 316                 if (lyxerr.debugging())
 317                         textcache.show(lyxerr, "buffer delete all");
 318                 textcache.clear();
 319         }
 320
 321         update();
 322         updateScrollbar();
 323         owner_->updateMenubar();
 324         owner_->updateToolbar();
 325         owner_->updateLayoutChoice();
 326         owner_->updateWindowTitle();
 327
 328         if (buffer_) {
 329                 // Don't forget to update the Layout
 330                 string const layoutname =
 331                         bv_->text->cursor.par()->layout()->name();
 332                 owner_->setLayout(layoutname);
 333         }
 334
 335         if (lyx::graphics::Previews::activated() && buffer_)
 336                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 337 }
 338
 339
 340 bool BufferView::Pimpl::fitCursor()
 341 {
 342         bool ret;
 343
 344         if (bv_->theLockingInset()) {
 345                 bv_->theLockingInset()->fitInsetCursor(bv_);
 346                 ret = true;
 347         } else {
 348                 ret = screen().fitCursor(bv_->text, bv_);
 349         }
 350
 351         //dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
 352
 353         // We need to always update, in case we did a
 354         // paste and we stayed anchored to a row, but
 355         // the actual height of the doc changed ...
 356         updateScrollbar();
 357         return ret;
 358 }
 359
 360
 361 void BufferView::Pimpl::redoCurrentBuffer()
 362 {
 363         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 364         if (buffer_ && bv_->text) {
 365                 resizeCurrentBuffer();
 366                 updateScrollbar();
 367                 owner_->updateLayoutChoice();
 368                 update();
 369         }
 370 }
 371
 372
 373 void BufferView::Pimpl::resizeCurrentBuffer()
 374 {
 375         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 376
 377         ParagraphList::iterator par;
 378         ParagraphList::iterator selstartpar;
 379         ParagraphList::iterator selendpar;
 380         UpdatableInset * the_locking_inset = 0;
 381
 382         pos_type pos = 0;
 383         pos_type selstartpos = 0;
 384         pos_type selendpos = 0;
 385         bool selection = false;
 386         bool mark_set  = false;
 387
 388         owner_->busy(true);
 389
 390         owner_->message(_("Formatting document..."));
 391
 392         if (bv_->text) {
 393                 par = bv_->text->cursor.par();
 394                 pos = bv_->text->cursor.pos();
 395                 selstartpar = bv_->text->selection.start.par();
 396                 selstartpos = bv_->text->selection.start.pos();
 397                 selendpar = bv_->text->selection.end.par();
 398                 selendpos = bv_->text->selection.end.pos();
 399                 selection = bv_->text->selection.set();
 400                 mark_set = bv_->text->selection.mark();
 401                 the_locking_inset = bv_->theLockingInset();
 402                 bv_->text->fullRebreak();
 403                 update();
 404         } else {
 405                 lyxerr << "text not available!" << endl;
 406                 // See if we have a text in TextCache that fits
 407                 // the new buffer_ with the correct width.
 408                 bv_->text = textcache.findFit(buffer_, workarea().workWidth());
 409                 if (bv_->text) {
 410                         lyxerr << "text in cache!" << endl;
 411                         if (lyxerr.debugging()) {
 412                                 lyxerr << "Found a LyXText that fits:" << endl;
 413                                 textcache.show(lyxerr, make_pair(buffer_, make_pair(workarea().workWidth(), bv_->text)));
 414                         }
 415                         // Set the owner of the newly found text
 416                         //      bv_->text->owner(bv_);
 417                         if (lyxerr.debugging())
 418                                 textcache.show(lyxerr, "resizeCurrentBuffer");
 419                 } else {
 420                         lyxerr << "no text in cache!" << endl;
 421                         bv_->text = new LyXText(bv_, 0, false, bv_->buffer()->paragraphs);
 422                         bv_->text->init(bv_);
 423                 }
 424
 425                 par = bv_->text->ownerParagraphs().end();
 426                 selstartpar = bv_->text->ownerParagraphs().end();
 427                 selendpar = bv_->text->ownerParagraphs().end();
 428         }
 429
 430 #warning does not help much
 431         bv_->text->redoParagraphs(bv_->text->ownerParagraphs().begin(),
 432                 bv_->text->ownerParagraphs().end());
 433
 434         if (par != bv_->text->ownerParagraphs().end()) {
 435                 bv_->text->selection.set(true);
 436                 // At this point just to avoid the Delete-Empty-Paragraph-
 437                 // Mechanism when setting the cursor.
 438                 bv_->text->selection.mark(mark_set);
 439                 if (selection) {
 440                         bv_->text->setCursor(selstartpar, selstartpos);
 441                         bv_->text->selection.cursor = bv_->text->cursor;
 442                         bv_->text->setCursor(selendpar, selendpos);
 443                         bv_->text->setSelection();
 444                         bv_->text->setCursor(par, pos);
 445                 } else {
 446                         bv_->text->setCursor(par, pos);
 447                         bv_->text->selection.cursor = bv_->text->cursor;
 448                         bv_->text->selection.set(false);
 449                 }
 450                 // remake the inset locking
 451                 bv_->theLockingInset(the_locking_inset);
 452         }
 453
 454         bv_->text->top_y(screen().topCursorVisible(bv_->text));
 455
 456         switchKeyMap();
 457         owner_->busy(false);
 458
 459         // reset the "Formatting..." message
 460         owner_->clearMessage();
 461
 462         updateScrollbar();
 463 }
 464
 465
 466 void BufferView::Pimpl::updateScrollbar()
 467 {
 468         if (!bv_->text) {
 469                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 470                 workarea().setScrollbarParams(0, 0, 0);
 471                 return;
 472         }
 473
 474         LyXText const & t = *bv_->text;
 475
 476         lyxerr[Debug::GUI] << "Updating scrollbar: h " << t.height << ", top_y() "
 477                 << t.top_y() << ", default height " << defaultRowHeight() << endl;
 478
 479         workarea().setScrollbarParams(t.height, t.top_y(), defaultRowHeight());
 480 }
 481
 482
 483 void BufferView::Pimpl::scrollDocView(int value)
 484 {
 485         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 486
 487         if (!buffer_)
 488                 return;
 489
 490         screen().hideCursor();
 491
 492         bv_->text->top_y(value);
 493         //screen().draw();
 494
 495         if (!lyxrc.cursor_follows_scrollbar)
 496                 return;
 497
 498         LyXText * vbt = bv_->text;
 499
 500         int const height = defaultRowHeight();
 501         int const first = static_cast<int>((bv_->text->top_y() + height));
 502         int const last = static_cast<int>((bv_->text->top_y() + workarea().workHeight() - height));
 503
 504         if (vbt->cursor.y() < first)
 505                 vbt->setCursorFromCoordinates(0, first);
 506         else if (vbt->cursor.y() > last)
 507                 vbt->setCursorFromCoordinates(0, last);
 508
 509         owner_->updateLayoutChoice();
 510 }
 511
 512
 513 void BufferView::Pimpl::scroll(int lines)
 514 {
 515         if (!buffer_) {
 516                 return;
 517         }
 518
 519         LyXText const * t = bv_->text;
 520         int const line_height = defaultRowHeight();
 521
 522         // The new absolute coordinate
 523         int new_top_y = t->top_y() + lines * line_height;
 524
 525         // Restrict to a valid value
 526         new_top_y = std::min(t->height - 4 * line_height, new_top_y);
 527         new_top_y = std::max(0, new_top_y);
 528
 529         scrollDocView(new_top_y);
 530
 531         // Update the scrollbar.
 532         workarea().setScrollbarParams(t->height, t->top_y(), defaultRowHeight());
 533 }
 534
 535
 536 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 537                                          key_modifier::state state)
 538 {
 539         bv_->owner()->getLyXFunc().processKeySym(key, state);
 540
 541         /* This is perhaps a bit of a hack. When we move
 542          * around, or type, it's nice to be able to see
 543          * the cursor immediately after the keypress. So
 544          * we reset the toggle timeout and force the visibility
 545          * of the cursor. Note we cannot do this inside
 546          * dispatch() itself, because that's called recursively.
 547          */
 548         if (available()) {
 549                 cursor_timeout.restart();
 550                 screen().showCursor(*bv_);
 551         }
 552 }
 553
 554
 555 void BufferView::Pimpl::selectionRequested()
 556 {
 557         static string sel;
 558
 559         if (!available())
 560                 return;
 561
 562         LyXText * text = bv_->getLyXText();
 563
 564         if (text->selection.set() &&
 565                 (!bv_->text->xsel_cache.set() ||
 566                  text->selection.start != bv_->text->xsel_cache.start ||
 567                  text->selection.end != bv_->text->xsel_cache.end))
 568         {
 569                 bv_->text->xsel_cache = text->selection;
 570                 sel = text->selectionAsString(bv_->buffer(), false);
 571         } else if (!text->selection.set()) {
 572                 sel = string();
 573                 bv_->text->xsel_cache.set(false);
 574         }
 575         if (!sel.empty()) {
 576                 workarea().putClipboard(sel);
 577         }
 578 }
 579
 580
 581 void BufferView::Pimpl::selectionLost()
 582 {
 583         if (available()) {
 584                 screen().hideCursor();
 585                 bv_->getLyXText()->clearSelection();
 586                 bv_->text->xsel_cache.set(false);
 587         }
 588 }
 589
 590
 591 void BufferView::Pimpl::workAreaResize()
 592 {
 593         static int work_area_width;
 594         static int work_area_height;
 595
 596         bool const widthChange = workarea().workWidth() != work_area_width;
 597         bool const heightChange = workarea().workHeight() != work_area_height;
 598
 599         // update from work area
 600         work_area_width = workarea().workWidth();
 601         work_area_height = workarea().workHeight();
 602
 603         if (buffer_ != 0) {
 604                 if (widthChange) {
 605                         // The visible LyXView need a resize
 606                         resizeCurrentBuffer();
 607
 608                         // Remove all texts from the textcache
 609                         // This is not _really_ what we want to do. What
 610                         // we really want to do is to delete in textcache
 611                         // that does not have a BufferView with matching
 612                         // width, but as long as we have only one BufferView
 613                         // deleting all gives the same result.
 614                         if (lyxerr.debugging())
 615                                 textcache.show(lyxerr, "Expose delete all");
 616                         textcache.clear();
 617                 }
 618         }
 619
 620         if (widthChange || heightChange)
 621                 update();
 622
 623         // always make sure that the scrollbar is sane.
 624         updateScrollbar();
 625         owner_->updateLayoutChoice();
 626 }
 627
 628
 629 void BufferView::Pimpl::update()
 630 {
 631         lyxerr << "BufferView::update()" << endl;
 632         // fix cursor coordinate cache in case something went wrong
 633         if (bv_->getLyXText()) {
 634                 // check needed to survive LyX startup
 635                 bv_->getLyXText()->redoCursor();
 636                 fitCursor();
 637         }
 638         screen().redraw(*bv_);
 639 }
 640
 641
 642 // Callback for cursor timer
 643 void BufferView::Pimpl::cursorToggle()
 644 {
 645         if (!buffer_) {
 646                 cursor_timeout.restart();
 647                 return;
 648         }
 649
 650         screen().toggleCursor(*bv_);
 651
 652         cursor_timeout.restart();
 653 }
 654
 655
 656 bool BufferView::Pimpl::available() const
 657 {
 658         if (buffer_ && bv_->text)
 659                 return true;
 660         return false;
 661 }
 662
 663
 664 Change const BufferView::Pimpl::getCurrentChange()
 665 {
 666         if (!bv_->buffer()->params.tracking_changes)
 667                 return Change(Change::UNCHANGED);
 668
 669         LyXText * text = bv_->getLyXText();
 670
 671         if (!text->selection.set())
 672                 return Change(Change::UNCHANGED);
 673
 674         LyXCursor const & cur = text->selection.start;
 675         return cur.par()->lookupChangeFull(cur.pos());
 676 }
 677
 678
 679 void BufferView::Pimpl::beforeChange(LyXText * text)
 680 {
 681         text->clearSelection();
 682 }
 683
 684
 685 void BufferView::Pimpl::savePosition(unsigned int i)
 686 {
 687         if (i >= saved_positions_num)
 688                 return;
 689         saved_positions[i] = Position(buffer_->fileName(),
 690                                       bv_->text->cursor.par()->id(),
 691                                       bv_->text->cursor.pos());
 692         if (i > 0)
 693                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 694 }
 695
 696
 697 void BufferView::Pimpl::restorePosition(unsigned int i)
 698 {
 699         if (i >= saved_positions_num)
 700                 return;
 701
 702         string const fname = saved_positions[i].filename;
 703
 704         beforeChange(bv_->text);
 705
 706         if (fname != buffer_->fileName()) {
 707                 Buffer * b;
 708                 if (bufferlist.exists(fname))
 709                         b = bufferlist.getBuffer(fname);
 710                 else {
 711                         b = bufferlist.newBuffer(fname);
 712                         ::loadLyXFile(b, fname); // don't ask, just load it
 713                 }
 714                 if (b != 0)
 715                         buffer(b);
 716         }
 717
 718         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 719         if (par == buffer_->par_iterator_end())
 720                 return;
 721
 722         bv_->text->setCursor(par.pit(),
 723                              min(par->size(), saved_positions[i].par_pos));
 724
 725         update();
 726         if (i > 0)
 727                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 728 }
 729
 730
 731 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 732 {
 733         if (i >= saved_positions_num)
 734                 return false;
 735
 736         return !saved_positions[i].filename.empty();
 737 }
 738
 739
 740 void BufferView::Pimpl::switchKeyMap()
 741 {
 742         if (!lyxrc.rtl_support)
 743                 return;
 744
 745         LyXText * text = bv_->getLyXText();
 746         if (text->real_current_font.isRightToLeft()
 747             && !(bv_->theLockingInset()
 748                  && bv_->theLockingInset()->lyxCode() == InsetOld::ERT_CODE))
 749         {
 750                 if (owner_->getIntl().keymap == Intl::PRIMARY)
 751                         owner_->getIntl().KeyMapSec();
 752         } else {
 753                 if (owner_->getIntl().keymap == Intl::SECONDARY)
 754                         owner_->getIntl().KeyMapPrim();
 755         }
 756 }
 757
 758
 759 void BufferView::Pimpl::insetUnlock()
 760 {
 761         if (bv_->theLockingInset()) {
 762                 bv_->theLockingInset()->insetUnlock(bv_);
 763                 bv_->theLockingInset(0);
 764                 finishUndo();
 765         }
 766 }
 767
 768
 769 void BufferView::Pimpl::center()
 770 {
 771         LyXText * text = bv_->text;
 772
 773         beforeChange(text);
 774         int const half_height = workarea().workHeight() / 2;
 775         int new_y = 0;
 776
 777         if (text->cursor.y() > half_height)
 778                 new_y = text->cursor.y() - half_height;
 779
 780         // FIXME: look at this comment again ...
 781
 782         // FIXME: can we do this w/o calling screen directly ?
 783         // This updates top_y() but means the fitCursor() call
 784         // from the update(FITCUR) doesn't realise that we might
 785         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 786         // the scrollbar to be updated as it should, so we have
 787         // to do it manually. Any operation that does a center()
 788         // and also might have moved top_y() must make sure to call
 789         // updateScrollbar() currently. Never mind that this is a
 790         // pretty obfuscated way of updating t->top_y()
 791         text->top_y(new_y);
 792         //screen().draw();
 793         update();
 794 }
 795
 796
 797 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 798 {
 799         workarea().putClipboard(stuff);
 800 }
 801
 802
 803 /*
 804  * Dispatch functions for actions which can be valid for BufferView->text
 805  * and/or InsetText->text!!!
 806  */
 807
 808
 809 InsetOld * BufferView::Pimpl::getInsetByCode(InsetOld::Code code)
 810 {
 811 #if 0
 812         LyXCursor cursor = bv_->getLyXText()->cursor;
 813         Buffer::inset_iterator it =
 814                 find_if(Buffer::inset_iterator(
 815                         cursor.par(), cursor.pos()),
 816                         buffer_->inset_iterator_end(),
 817                         lyx::compare_memfun(&Inset::lyxCode, code));
 818         return it != buffer_->inset_iterator_end() ? (*it) : 0;
 819 #else
 820         // Ok, this is a little bit too brute force but it
 821         // should work for now. Better infrastructure is coming. (Lgb)
 822
 823         Buffer * b = bv_->buffer();
 824         LyXCursor cursor = bv_->getLyXText()->cursor;
 825
 826         Buffer::inset_iterator beg = b->inset_iterator_begin();
 827         Buffer::inset_iterator end = b->inset_iterator_end();
 828
 829         bool cursor_par_seen = false;
 830
 831         for (; beg != end; ++beg) {
 832                 if (beg.getPar() == cursor.par()) {
 833                         cursor_par_seen = true;
 834                 }
 835                 if (cursor_par_seen) {
 836                         if (beg.getPar() == cursor.par()
 837                             && beg.getPos() >= cursor.pos()) {
 838                                 break;
 839                         } else if (beg.getPar() != cursor.par()) {
 840                                 break;
 841                         }
 842                 }
 843
 844         }
 845         if (beg != end) {
 846                 // Now find the first inset that matches code.
 847                 for (; beg != end; ++beg) {
 848                         if (beg->lyxCode() == code) {
 849                                 return &(*beg);
 850                         }
 851                 }
 852         }
 853         return 0;
 854 #endif
 855 }
 856
 857
 858 void BufferView::Pimpl::MenuInsertLyXFile(string const & filen)
 859 {
 860         string filename = filen;
 861
 862         if (filename.empty()) {
 863                 // Launch a file browser
 864                 string initpath = lyxrc.document_path;
 865
 866                 if (available()) {
 867                         string const trypath = owner_->buffer()->filePath();
 868                         // If directory is writeable, use this as default.
 869                         if (IsDirWriteable(trypath))
 870                                 initpath = trypath;
 871                 }
 872
 873                 FileDialog fileDlg(_("Select LyX document to insert"),
 874                         LFUN_FILE_INSERT,
 875                         make_pair(string(_("Documents|#o#O")),
 876                                   string(lyxrc.document_path)),
 877                         make_pair(string(_("Examples|#E#e")),
 878                                   string(AddPath(system_lyxdir(), "examples"))));
 879
 880                 FileDialog::Result result =
 881                         fileDlg.open(initpath,
 882                                        _("*.lyx| LyX Documents (*.lyx)"));
 883
 884                 if (result.first == FileDialog::Later)
 885                         return;
 886
 887                 filename = result.second;
 888
 889                 // check selected filename
 890                 if (filename.empty()) {
 891                         owner_->message(_("Canceled."));
 892                         return;
 893                 }
 894         }
 895
 896         // get absolute path of file and add ".lyx" to the filename if
 897         // necessary
 898         filename = FileSearch(string(), filename, "lyx");
 899
 900         string const disp_fn = MakeDisplayPath(filename);
 901         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 902         if (bv_->insertLyXFile(filename))
 903                 owner_->message(bformat(_("Document %1$s inserted."),
 904                                         disp_fn));
 905         else
 906                 owner_->message(bformat(_("Could not insert document %1$s"),
 907                                         disp_fn));
 908 }
 909
 910
 911 void BufferView::Pimpl::trackChanges()
 912 {
 913         Buffer * buf(bv_->buffer());
 914         bool const tracking(buf->params.tracking_changes);
 915
 916         if (!tracking) {
 917                 ParIterator const end = buf->par_iterator_end();
 918                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 919                         it->trackChanges();
 920                 buf->params.tracking_changes = true;
 921
 922                 // we cannot allow undos beyond the freeze point
 923                 buf->undostack.clear();
 924         } else {
 925                 update();
 926                 bv_->text->setCursor(buf->paragraphs.begin(), 0);
 927 #warning changes FIXME
 928                 //moveCursorUpdate(false);
 929
 930                 bool found = lyx::find::findNextChange(bv_);
 931                 if (found) {
 932                         owner_->getDialogs().show("changes");
 933                         return;
 934                 }
 935
 936                 ParIterator const end = buf->par_iterator_end();
 937                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 938                         it->untrackChanges();
 939                 buf->params.tracking_changes = false;
 940         }
 941
 942         buf->redostack.clear();
 943 }
 944
 945
 946 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & ev)
 947 {
 948         switch (ev.action) {
 949         case LFUN_MOUSE_PRESS:
 950         case LFUN_MOUSE_MOTION:
 951         case LFUN_MOUSE_RELEASE:
 952         case LFUN_MOUSE_DOUBLE:
 953         case LFUN_MOUSE_TRIPLE:
 954         {
 955                 // We pass those directly to the Bufferview, since
 956                 // otherwise selection handling breaks down
 957
 958                 // Doesn't go through lyxfunc, so we need to update
 959                 // the layout choice etc. ourselves
 960
 961                 // e.g. Qt mouse press when no buffer
 962                 if (!available())
 963                         return false;
 964
 965                 screen().hideCursor();
 966
 967                 bool const res = dispatch(ev);
 968
 969                 // see workAreaKeyPress
 970                 cursor_timeout.restart();
 971                 screen().showCursor(*bv_);
 972
 973                 // FIXME: we should skip these when selecting
 974                 owner_->updateLayoutChoice();
 975                 owner_->updateToolbar();
 976                 fitCursor();
 977
 978                 // slight hack: this is only called currently when we
 979                 // clicked somewhere, so we force through the display
 980                 // of the new status here.
 981                 owner_->clearMessage();
 982
 983                 return res;
 984         }
 985         default:
 986                 owner_->dispatch(ev);
 987                 return true;
 988         }
 989 }
 990
 991
 992 bool BufferView::Pimpl::dispatch(FuncRequest const & ev_in)
 993 {
 994         // Make sure that the cached BufferView is correct.
 995         FuncRequest ev = ev_in;
 996         ev.setView(bv_);
 997
 998         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
 999                 << " action[" << ev.action << ']'
1000                 << " arg[" << ev.argument << ']'
1001                 << " x[" << ev.x << ']'
1002                 << " y[" << ev.y << ']'
1003                 << " button[" << ev.button() << ']'
1004                 << endl;
1005
1006         LyXTextClass const & tclass = buffer_->params.getLyXTextClass();
1007
1008         switch (ev.action) {
1009
1010         case LFUN_SCROLL_INSET:
1011                 // this is not handled here as this function is only active
1012                 // if we have a locking_inset and that one is (or contains)
1013                 // a tabular-inset
1014                 break;
1015
1016         case LFUN_FILE_INSERT:
1017                 MenuInsertLyXFile(ev.argument);
1018                 break;
1019
1020         case LFUN_FILE_INSERT_ASCII_PARA:
1021                 InsertAsciiFile(bv_, ev.argument, true);
1022                 break;
1023
1024         case LFUN_FILE_INSERT_ASCII:
1025                 InsertAsciiFile(bv_, ev.argument, false);
1026                 break;
1027
1028         case LFUN_LANGUAGE:
1029                 lang(bv_, ev.argument);
1030                 switchKeyMap();
1031                 owner_->view_state_changed();
1032                 break;
1033
1034         case LFUN_EMPH:
1035                 emph(bv_);
1036                 owner_->view_state_changed();
1037                 break;
1038
1039         case LFUN_BOLD:
1040                 bold(bv_);
1041                 owner_->view_state_changed();
1042                 break;
1043
1044         case LFUN_NOUN:
1045                 noun(bv_);
1046                 owner_->view_state_changed();
1047                 break;
1048
1049         case LFUN_CODE:
1050                 code(bv_);
1051                 owner_->view_state_changed();
1052                 break;
1053
1054         case LFUN_SANS:
1055                 sans(bv_);
1056                 owner_->view_state_changed();
1057                 break;
1058
1059         case LFUN_ROMAN:
1060                 roman(bv_);
1061                 owner_->view_state_changed();
1062                 break;
1063
1064         case LFUN_DEFAULT:
1065                 styleReset(bv_);
1066                 owner_->view_state_changed();
1067                 break;
1068
1069         case LFUN_UNDERLINE:
1070                 underline(bv_);
1071                 owner_->view_state_changed();
1072                 break;
1073
1074         case LFUN_FONT_SIZE:
1075                 fontSize(bv_, ev.argument);
1076                 owner_->view_state_changed();
1077                 break;
1078
1079         case LFUN_FONT_STATE:
1080                 owner_->getLyXFunc().setMessage(currentState(bv_));
1081                 break;
1082
1083         case LFUN_INSERT_LABEL: {
1084                 // Try and generate a valid label
1085                 string const contents = ev.argument.empty() ?
1086                         getPossibleLabel(*bv_) : ev.argument;
1087                 InsetCommandParams icp("label", contents);
1088                 string data = InsetCommandMailer::params2string("label", icp);
1089                 owner_->getDialogs().show("label", data, 0);
1090         }
1091         break;
1092
1093         case LFUN_BOOKMARK_SAVE:
1094                 savePosition(strToUnsignedInt(ev.argument));
1095                 break;
1096
1097         case LFUN_BOOKMARK_GOTO:
1098                 restorePosition(strToUnsignedInt(ev.argument));
1099                 break;
1100
1101         case LFUN_REF_GOTO: {
1102                 string label = ev.argument;
1103                 if (label.empty()) {
1104                         InsetRef * inset =
1105                                 static_cast<InsetRef*>(getInsetByCode(InsetOld::REF_CODE));
1106                         if (inset) {
1107                                 label = inset->getContents();
1108                                 savePosition(0);
1109                         }
1110                 }
1111
1112                 if (!label.empty())
1113                         bv_->gotoLabel(label);
1114         }
1115         break;
1116
1117         // --- accented characters ---------------------------
1118
1119         case LFUN_UMLAUT:
1120         case LFUN_CIRCUMFLEX:
1121         case LFUN_GRAVE:
1122         case LFUN_ACUTE:
1123         case LFUN_TILDE:
1124         case LFUN_CEDILLA:
1125         case LFUN_MACRON:
1126         case LFUN_DOT:
1127         case LFUN_UNDERDOT:
1128         case LFUN_UNDERBAR:
1129         case LFUN_CARON:
1130         case LFUN_SPECIAL_CARON:
1131         case LFUN_BREVE:
1132         case LFUN_TIE:
1133         case LFUN_HUNG_UMLAUT:
1134         case LFUN_CIRCLE:
1135         case LFUN_OGONEK:
1136                 if (ev.argument.empty()) {
1137                         // As always...
1138                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1139                 } else {
1140                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1141                         owner_->getIntl().getTransManager()
1142                                 .TranslateAndInsert(ev.argument[0], bv_->getLyXText());
1143                         update();
1144                 }
1145                 break;
1146
1147         case LFUN_MATH_MACRO:
1148         case LFUN_MATH_DELIM:
1149         case LFUN_INSERT_MATRIX:
1150         case LFUN_INSERT_MATH:
1151         case LFUN_MATH_IMPORT_SELECTION: // Imports LaTeX from the X selection
1152         case LFUN_MATH_DISPLAY:          // Open or create a displayed math inset
1153         case LFUN_MATH_MODE:             // Open or create an inlined math inset
1154                 mathDispatch(ev);
1155                 break;
1156
1157         case LFUN_INSET_APPLY: {
1158                 string const name = ev.getArg(0);
1159
1160                 InsetBase * inset = owner_->getDialogs().getOpenInset(name);
1161                 if (inset) {
1162                         // This works both for 'original' and 'mathed' insets.
1163                         // Note that the localDispatch performs updateInset
1164                         // also.
1165                         FuncRequest fr(bv_, LFUN_INSET_MODIFY, ev.argument);
1166                         inset->localDispatch(fr);
1167                 } else {
1168                         FuncRequest fr(bv_, LFUN_INSET_INSERT, ev.argument);
1169                         dispatch(fr);
1170                 }
1171         }
1172         break;
1173
1174         case LFUN_INSET_INSERT: {
1175                 InsetOld * inset = createInset(ev);
1176                 if (inset && insertInset(inset)) {
1177                         updateInset();
1178
1179                         string const name = ev.getArg(0);
1180                         if (name == "bibitem") {
1181                                 // We need to do a redraw because the maximum
1182                                 // InsetBibitem width could have changed
1183 #warning check whether the update() is needed at all
1184                                 bv_->update();
1185                         }
1186                 } else {
1187                         delete inset;
1188                 }
1189         }
1190         break;
1191
1192         case LFUN_FLOAT_LIST:
1193                 if (tclass.floats().typeExist(ev.argument)) {
1194                         InsetOld * inset = new InsetFloatList(ev.argument);
1195                         if (!insertInset(inset, tclass.defaultLayoutName()))
1196                                 delete inset;
1197                 } else {
1198                         lyxerr << "Non-existent float type: "
1199                                << ev.argument << endl;
1200                 }
1201                 break;
1202
1203         case LFUN_LAYOUT_PARAGRAPH: {
1204                 string data;
1205                 params2string(*bv_->getLyXText()->cursor.par(), data);
1206
1207                 data = "show\n" + data;
1208                 bv_->owner()->getDialogs().show("paragraph", data);
1209                 break;
1210         }
1211
1212         case LFUN_PARAGRAPH_UPDATE: {
1213                 if (!bv_->owner()->getDialogs().visible("paragraph"))
1214                         break;
1215                 Paragraph const & par = *bv_->getLyXText()->cursor.par();
1216
1217                 string data;
1218                 params2string(par, data);
1219
1220                 // Will the paragraph accept changes from the dialog?
1221                 InsetOld * const inset = par.inInset();
1222                 bool const accept =
1223                         !(inset && inset->forceDefaultParagraphs(inset));
1224
1225                 data = "update " + tostr(accept) + '\n' + data;
1226                 bv_->owner()->getDialogs().update("paragraph", data);
1227                 break;
1228         }
1229
1230         case LFUN_PARAGRAPH_APPLY:
1231                 setParagraphParams(*bv_, ev.argument);
1232                 break;
1233
1234         case LFUN_THESAURUS_ENTRY:
1235         {
1236                 string arg = ev.argument;
1237
1238                 if (arg.empty()) {
1239                         arg = bv_->getLyXText()->selectionAsString(buffer_,
1240                                                                    false);
1241
1242                         // FIXME
1243                         if (arg.size() > 100 || arg.empty()) {
1244                                 // Get word or selection
1245                                 bv_->getLyXText()->selectWordWhenUnderCursor(lyx::WHOLE_WORD);
1246                                 arg = bv_->getLyXText()->selectionAsString(buffer_, false);
1247                                 // FIXME: where is getLyXText()->unselect(bv_) ?
1248                         }
1249                 }
1250
1251                 bv_->owner()->getDialogs().show("thesaurus", arg);
1252         }
1253                 break;
1254
1255         case LFUN_TRACK_CHANGES:
1256                 trackChanges();
1257                 break;
1258
1259         case LFUN_MERGE_CHANGES:
1260                 owner_->getDialogs().show("changes");
1261                 break;
1262
1263         case LFUN_ACCEPT_ALL_CHANGES: {
1264                 bv_->text->setCursor(bv_->buffer()->paragraphs.begin(), 0);
1265 #warning FIXME changes
1266                 //moveCursorUpdate(false);
1267
1268                 while (lyx::find::findNextChange(bv_))
1269                         bv_->getLyXText()->acceptChange();
1270
1271                 update();
1272                 break;
1273         }
1274
1275         case LFUN_REJECT_ALL_CHANGES: {
1276                 bv_->text->setCursor(bv_->buffer()->paragraphs.begin(), 0);
1277 #warning FIXME changes
1278                 //moveCursorUpdate(false);
1279
1280                 while (lyx::find::findNextChange(bv_))
1281                         bv_->getLyXText()->rejectChange();
1282
1283                 update();
1284                 break;
1285         }
1286
1287         case LFUN_ACCEPT_CHANGE: {
1288                 bv_->getLyXText()->acceptChange();
1289                 update();
1290                 break;
1291         }
1292
1293         case LFUN_REJECT_CHANGE: {
1294                 bv_->getLyXText()->rejectChange();
1295                 update();
1296                 break;
1297         }
1298
1299         case LFUN_UNKNOWN_ACTION:
1300                 ev.errorMessage(N_("Unknown function!"));
1301                 break;
1302
1303         default:
1304                 return bv_->getLyXText()->dispatch(FuncRequest(ev, bv_));
1305         } // end of switch
1306
1307         return true;
1308 }
1309
1310
1311 bool BufferView::Pimpl::insertInset(InsetOld * inset, string const & lout)
1312 {
1313         // if we are in a locking inset we should try to insert the
1314         // inset there otherwise this is a illegal function now
1315         if (bv_->theLockingInset()) {
1316                 if (bv_->theLockingInset()->insetAllowed(inset))
1317                         return bv_->theLockingInset()->insertInset(bv_, inset);
1318                 return false;
1319         }
1320
1321         // not quite sure if we want this...
1322         recordUndo(bv_, Undo::ATOMIC);
1323         freezeUndo();
1324
1325         beforeChange(bv_->text);
1326         if (!lout.empty()) {
1327                 bv_->text->breakParagraph(bv_->buffer()->paragraphs);
1328
1329                 if (!bv_->text->cursor.par()->empty()) {
1330                         bv_->text->cursorLeft(bv_);
1331                         bv_->text->breakParagraph(bv_->buffer()->paragraphs);
1332                 }
1333
1334                 string lres = lout;
1335                 LyXTextClass const & tclass = buffer_->params.getLyXTextClass();
1336                 bool hasLayout = tclass.hasLayout(lres);
1337                 string lay = tclass.defaultLayoutName();
1338
1339                 if (hasLayout != false) {
1340                         // layout found
1341                         lay = lres;
1342                 } else {
1343                         // layout not fount using default
1344                         lay = tclass.defaultLayoutName();
1345                 }
1346
1347                 bv_->text->setLayout(lay);
1348
1349                 bv_->text->setParagraph(0, 0,
1350                                    0, 0,
1351                                    VSpace(VSpace::NONE), VSpace(VSpace::NONE),
1352                                    Spacing(),
1353                                    LYX_ALIGN_LAYOUT,
1354                                    string(),
1355                                    0);
1356         }
1357
1358         bv_->text->insertInset(inset);
1359         update();
1360
1361         unFreezeUndo();
1362         return true;
1363 }
1364
1365
1366 void BufferView::Pimpl::updateInset()
1367 {
1368         if (!available())
1369                 return;
1370
1371         // this should not be needed, but it is...
1372         bv_->text->redoParagraph(bv_->text->cursor.par());
1373
1374         update();
1375         updateScrollbar();
1376 }