src/BufferView_pimpl.C

   1 /**
   2  * \file BufferView_pimpl.C
   3  * Copyright 2002 the LyX Team
   4  * Read the file COPYING
   5  *
   6  * \author various
   7  */
   8
   9 #include <config.h>
  10
  11 #include "BufferView_pimpl.h"
  12 #include "bufferlist.h"
  13 #include "buffer.h"
  14 #include "buffer_funcs.h"
  15 #include "bufferview_funcs.h"
  16 #include "lfuns.h"
  17 #include "debug.h"
  18 #include "factory.h"
  19 #include "FloatList.h"
  20 #include "funcrequest.h"
  21 #include "gettext.h"
  22 #include "intl.h"
  23 #include "iterators.h"
  24 #include "Lsstream.h"
  25 #include "lyx_cb.h" // added for Dispatch functions
  26 #include "lyx_main.h"
  27 #include "lyxfind.h"
  28 #include "lyxfunc.h"
  29 #include "lyxtext.h"
  30 #include "lyxrc.h"
  31 #include "lyxrow.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
  62 #include <boost/bind.hpp>
  63 #include <boost/signals/connection.hpp>
  64
  65 #include <unistd.h>
  66 #include <sys/wait.h>
  67
  68
  69 using std::vector;
  70 using std::find_if;
  71 using std::find;
  72 using std::pair;
  73 using std::endl;
  74 using std::make_pair;
  75 using std::min;
  76
  77 using lyx::pos_type;
  78 using namespace bv_funcs;
  79
  80 extern BufferList bufferlist;
  81
  82
  83 namespace {
  84
  85 unsigned int const saved_positions_num = 20;
  86
  87 // All the below connection objects are needed because of a bug in some
  88 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
  89 // to these connections we avoid a segfault upon startup, and also at exit.
  90 // (Lgb)
  91
  92 boost::signals::connection dispatchcon;
  93 boost::signals::connection timecon;
  94 boost::signals::connection doccon;
  95 boost::signals::connection resizecon;
  96 boost::signals::connection kpresscon;
  97 boost::signals::connection selectioncon;
  98 boost::signals::connection lostcon;
  99
 100
 101 } // anon namespace
 102
 103
 104 BufferView::Pimpl::Pimpl(BufferView * bv, LyXView * owner,
 105              int xpos, int ypos, int width, int height)
 106         : bv_(bv), owner_(owner), buffer_(0), cursor_timeout(400),
 107           using_xterm_cursor(false)
 108 {
 109         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 110         screen_.reset(LyXScreenFactory::create(workarea()));
 111
 112         // Setup the signals
 113         doccon = workarea().scrollDocView
 114                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 115         resizecon = workarea().workAreaResize
 116                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 117         dispatchcon = workarea().dispatch
 118                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 119         kpresscon = workarea().workAreaKeyPress
 120                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 121         selectioncon = workarea().selectionRequested
 122                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 123         lostcon = workarea().selectionLost
 124                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 125
 126         timecon = cursor_timeout.timeout
 127                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 128         cursor_timeout.start();
 129         saved_positions.resize(saved_positions_num);
 130 }
 131
 132
 133 void BufferView::Pimpl::addError(ErrorItem const & ei)
 134 {
 135         errorlist_.push_back(ei);
 136
 137 }
 138
 139
 140 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 141 {
 142         // get absolute path of file and add ".lyx" to the filename if
 143         // necessary
 144         string s = FileSearch(string(), filename, "lyx");
 145         if (s.empty()) {
 146                 s = filename;
 147         }
 148
 149         // file already open?
 150         if (bufferlist.exists(s)) {
 151                 string const file = MakeDisplayPath(s, 20);
 152                 string text = bformat(_("The document %1$s is already "
 153                                         "loaded.\n\nDo you want to revert "
 154                                         "to the saved version?"), file);
 155                 int const ret = Alert::prompt(_("Revert to saved document?"),
 156                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 157
 158                 if (ret != 0) {
 159                         buffer(bufferlist.getBuffer(s));
 160                         return true;
 161                 } else {
 162                         // FIXME: should be LFUN_REVERT
 163                         if (!bufferlist.close(bufferlist.getBuffer(s), false))
 164                                 return false;
 165                         // Fall through to new load. (Asger)
 166                 }
 167         }
 168         Buffer * b = bufferlist.newBuffer(s);
 169
 170         bv_->resetErrorList();
 171         //attach to the error signal in the buffer
 172         b->parseError.connect(boost::bind(&BufferView::Pimpl::addError,
 173                                           this, _1));
 174
 175         bool loaded = true;
 176
 177         if (! ::loadLyXFile(b, s)) {
 178                 bufferlist.release(b);
 179                 string text = bformat(_("The document %1$s does "
 180                                         "not yet exist.\n\n"
 181                                         "Do you want to create "
 182                                         "a new document?"), s);
 183                 int const ret = Alert::prompt(_("Create new document?"),
 184                          text, 0, 1, _("&Create"), _("Cancel"));
 185
 186                 if (ret == 0) {
 187                         bufferlist.close(buffer_, false);
 188                         buffer(newFile(s, string(), true));
 189                 }
 190
 191                 loaded = false;
 192         }
 193
 194         buffer(b);
 195
 196         if (tolastfiles)
 197                 lastfiles->newFile(b->fileName());
 198
 199         if (loaded)
 200                 bv_->showErrorList(_("Parse"));
 201
 202         return true;
 203 }
 204
 205 WorkArea & BufferView::Pimpl::workarea() const
 206 {
 207         return *workarea_.get();
 208 }
 209
 210
 211 LyXScreen & BufferView::Pimpl::screen() const
 212 {
 213         return *screen_.get();
 214 }
 215
 216
 217 Painter & BufferView::Pimpl::painter() const
 218 {
 219         return workarea().getPainter();
 220 }
 221
 222
 223 void BufferView::Pimpl::buffer(Buffer * b)
 224 {
 225         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 226                             << b << ')' << endl;
 227         if (buffer_) {
 228                 buffer_->delUser(bv_);
 229
 230                 // Put the old text into the TextCache, but
 231                 // only if the buffer is still loaded.
 232                 // Also set the owner of the test to 0
 233                 //              bv_->text->owner(0);
 234                 textcache.add(buffer_, workarea().workWidth(), bv_->text);
 235                 if (lyxerr.debugging())
 236                         textcache.show(lyxerr, "BufferView::buffer");
 237
 238                 bv_->text = 0;
 239         }
 240
 241         // set current buffer
 242         buffer_ = b;
 243
 244         // if we're quitting lyx, don't bother updating stuff
 245         if (quitting)
 246                 return;
 247
 248         // if we are closing the buffer, use the first buffer as current
 249         if (!buffer_) {
 250                 buffer_ = bufferlist.first();
 251         }
 252
 253         if (buffer_) {
 254                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 255                 buffer_->addUser(bv_);
 256
 257                 // If we don't have a text object for this, we make one
 258                 if (bv_->text == 0) {
 259                         resizeCurrentBuffer();
 260                 }
 261
 262                 // FIXME: needed when ?
 263                 bv_->text->top_y(screen().topCursorVisible(bv_->text->cursor, bv_->text->top_y()));
 264
 265                 // Buffer-dependent dialogs should be updated or
 266                 // hidden. This should go here because some dialogs (eg ToC)
 267                 // require bv_->text.
 268                 owner_->getDialogs().updateBufferDependent(true);
 269         } else {
 270                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 271                 owner_->getDialogs().hideBufferDependent();
 272
 273                 // Also remove all remaining text's from the testcache.
 274                 // (there should not be any!) (if there is any it is a
 275                 // bug!)
 276                 if (lyxerr.debugging())
 277                         textcache.show(lyxerr, "buffer delete all");
 278                 textcache.clear();
 279         }
 280
 281         repaint();
 282         updateScrollbar();
 283         owner_->updateMenubar();
 284         owner_->updateToolbar();
 285         owner_->updateLayoutChoice();
 286         owner_->updateWindowTitle();
 287
 288         if (buffer_) {
 289                 // Don't forget to update the Layout
 290                 string const layoutname =
 291                         bv_->text->cursor.par()->layout()->name();
 292                 owner_->setLayout(layoutname);
 293         }
 294
 295         if (grfx::Previews::activated() && buffer_)
 296                 grfx::Previews::get().generateBufferPreviews(*buffer_);
 297 }
 298
 299
 300 bool BufferView::Pimpl::fitCursor()
 301 {
 302         bool ret;
 303
 304         if (bv_->theLockingInset()) {
 305                 bv_->theLockingInset()->fitInsetCursor(bv_);
 306                 ret = true;
 307         } else {
 308                 ret = screen().fitCursor(bv_->text, bv_);
 309         }
 310
 311         dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
 312
 313         // We need to always update, in case we did a
 314         // paste and we stayed anchored to a row, but
 315         // the actual height of the doc changed ...
 316         updateScrollbar();
 317         return ret;
 318 }
 319
 320
 321 void BufferView::Pimpl::redoCurrentBuffer()
 322 {
 323         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 324         if (buffer_ && bv_->text) {
 325                 resizeCurrentBuffer();
 326                 updateScrollbar();
 327                 owner_->updateLayoutChoice();
 328                 repaint();
 329         }
 330 }
 331
 332
 333 int BufferView::Pimpl::resizeCurrentBuffer()
 334 {
 335         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 336
 337         ParagraphList::iterator par;
 338         ParagraphList::iterator selstartpar;
 339         ParagraphList::iterator selendpar;
 340         UpdatableInset * the_locking_inset = 0;
 341
 342         pos_type pos = 0;
 343         pos_type selstartpos = 0;
 344         pos_type selendpos = 0;
 345         bool selection = false;
 346         bool mark_set  = false;
 347
 348         owner_->busy(true);
 349
 350         owner_->message(_("Formatting document..."));
 351
 352         if (bv_->text) {
 353                 par = bv_->text->cursor.par();
 354                 pos = bv_->text->cursor.pos();
 355                 selstartpar = bv_->text->selection.start.par();
 356                 selstartpos = bv_->text->selection.start.pos();
 357                 selendpar = bv_->text->selection.end.par();
 358                 selendpos = bv_->text->selection.end.pos();
 359                 selection = bv_->text->selection.set();
 360                 mark_set = bv_->text->selection.mark();
 361                 the_locking_inset = bv_->theLockingInset();
 362                 buffer_->resizeInsets(bv_);
 363                 // I don't think the delete and new are necessary here we
 364                 // just could call only init! (Jug 20020419)
 365                 delete bv_->text;
 366                 bv_->text = new LyXText(bv_);
 367                 bv_->text->init(bv_);
 368         } else {
 369                 // See if we have a text in TextCache that fits
 370                 // the new buffer_ with the correct width.
 371                 bv_->text = textcache.findFit(buffer_, workarea().workWidth());
 372                 if (bv_->text) {
 373                         if (lyxerr.debugging()) {
 374                                 lyxerr << "Found a LyXText that fits:\n";
 375                                 textcache.show(lyxerr, make_pair(buffer_, make_pair(workarea().workWidth(), bv_->text)));
 376                         }
 377                         // Set the owner of the newly found text
 378                         //      bv_->text->owner(bv_);
 379                         if (lyxerr.debugging())
 380                                 textcache.show(lyxerr, "resizeCurrentBuffer");
 381
 382                         buffer_->resizeInsets(bv_);
 383                 } else {
 384                         bv_->text = new LyXText(bv_);
 385                         bv_->text->init(bv_);
 386                         //buffer_->resizeInsets(bv_);
 387                 }
 388
 389                 par = bv_->text->ownerParagraphs().end();
 390                 selstartpar = bv_->text->ownerParagraphs().end();
 391                 selendpar = bv_->text->ownerParagraphs().end();
 392         }
 393
 394         if (par != bv_->text->ownerParagraphs().end()) {
 395                 bv_->text->selection.set(true);
 396                 // At this point just to avoid the Delete-Empty-Paragraph-
 397                 // Mechanism when setting the cursor.
 398                 bv_->text->selection.mark(mark_set);
 399                 if (selection) {
 400                         bv_->text->setCursor(selstartpar, selstartpos);
 401                         bv_->text->selection.cursor = bv_->text->cursor;
 402                         bv_->text->setCursor(selendpar, selendpos);
 403                         bv_->text->setSelection();
 404                         bv_->text->setCursor(par, pos);
 405                 } else {
 406                         bv_->text->setCursor(par, pos);
 407                         bv_->text->selection.cursor = bv_->text->cursor;
 408                         bv_->text->selection.set(false);
 409                 }
 410                 // remake the inset locking
 411                 bv_->theLockingInset(the_locking_inset);
 412         }
 413
 414         bv_->text->top_y(screen().topCursorVisible(bv_->text->cursor, bv_->text->top_y()));
 415
 416         switchKeyMap();
 417         owner_->busy(false);
 418
 419         // reset the "Formatting..." message
 420         owner_->clearMessage();
 421
 422         updateScrollbar();
 423
 424         return 0;
 425 }
 426
 427
 428 void BufferView::Pimpl::repaint()
 429 {
 430         // Regenerate the screen.
 431         screen().redraw(bv_->text, bv_);
 432 }
 433
 434
 435 void BufferView::Pimpl::updateScrollbar()
 436 {
 437         if (!bv_->text) {
 438                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 439                 workarea().setScrollbarParams(0, 0, 0);
 440                 return;
 441         }
 442
 443         LyXText const & t = *bv_->text;
 444
 445         lyxerr[Debug::GUI] << "Updating scrollbar: h " << t.height << ", top_y() "
 446                 << t.top_y() << ", default height " << defaultRowHeight() << endl;
 447
 448         workarea().setScrollbarParams(t.height, t.top_y(), defaultRowHeight());
 449 }
 450
 451
 452 void BufferView::Pimpl::scrollDocView(int value)
 453 {
 454         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 455
 456         if (!buffer_)
 457                 return;
 458
 459         screen().hideCursor();
 460
 461         screen().draw(bv_->text, bv_, value);
 462
 463         if (!lyxrc.cursor_follows_scrollbar)
 464                 return;
 465
 466         LyXText * vbt = bv_->text;
 467
 468         int const height = defaultRowHeight();
 469         int const first = static_cast<int>((bv_->text->top_y() + height));
 470         int const last = static_cast<int>((bv_->text->top_y() + workarea().workHeight() - height));
 471
 472         if (vbt->cursor.y() < first)
 473                 vbt->setCursorFromCoordinates(0, first);
 474         else if (vbt->cursor.y() > last)
 475                 vbt->setCursorFromCoordinates(0, last);
 476
 477         owner_->updateLayoutChoice();
 478 }
 479
 480
 481 void BufferView::Pimpl::scroll(int lines)
 482 {
 483         if (!buffer_) {
 484                 return;
 485         }
 486
 487         LyXText const * t = bv_->text;
 488         int const line_height = defaultRowHeight();
 489
 490         // The new absolute coordinate
 491         int new_top_y = t->top_y() + lines * line_height;
 492
 493         // Restrict to a valid value
 494         new_top_y = std::min(t->height - 4 * line_height, new_top_y);
 495         new_top_y = std::max(0, new_top_y);
 496
 497         scrollDocView(new_top_y);
 498
 499         // Update the scrollbar.
 500         workarea().setScrollbarParams(t->height, t->top_y(), defaultRowHeight());
 501 }
 502
 503
 504 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 505                                          key_modifier::state state)
 506 {
 507         bv_->owner()->getLyXFunc().processKeySym(key, state);
 508
 509         /* This is perhaps a bit of a hack. When we move
 510          * around, or type, it's nice to be able to see
 511          * the cursor immediately after the keypress. So
 512          * we reset the toggle timeout and force the visibility
 513          * of the cursor. Note we cannot do this inside
 514          * dispatch() itself, because that's called recursively.
 515          */
 516         if (available()) {
 517                 cursor_timeout.restart();
 518                 screen().showCursor(*bv_);
 519         }
 520 }
 521
 522
 523 void BufferView::Pimpl::selectionRequested()
 524 {
 525         static string sel;
 526
 527         if (!available())
 528                 return;
 529
 530         LyXText * text = bv_->getLyXText();
 531
 532         if (text->selection.set() &&
 533                 (!bv_->text->xsel_cache.set() ||
 534                  text->selection.start != bv_->text->xsel_cache.start ||
 535                  text->selection.end != bv_->text->xsel_cache.end))
 536         {
 537                 bv_->text->xsel_cache = text->selection;
 538                 sel = text->selectionAsString(bv_->buffer(), false);
 539         } else if (!text->selection.set()) {
 540                 sel = string();
 541                 bv_->text->xsel_cache.set(false);
 542         }
 543         if (!sel.empty()) {
 544                 workarea().putClipboard(sel);
 545         }
 546 }
 547
 548
 549 void BufferView::Pimpl::selectionLost()
 550 {
 551         if (available()) {
 552                 screen().hideCursor();
 553                 toggleSelection();
 554                 bv_->getLyXText()->clearSelection();
 555                 bv_->text->xsel_cache.set(false);
 556         }
 557 }
 558
 559
 560 void BufferView::Pimpl::workAreaResize()
 561 {
 562         static int work_area_width;
 563         static int work_area_height;
 564
 565         bool const widthChange = workarea().workWidth() != work_area_width;
 566         bool const heightChange = workarea().workHeight() != work_area_height;
 567
 568         // update from work area
 569         work_area_width = workarea().workWidth();
 570         work_area_height = workarea().workHeight();
 571
 572         if (buffer_ != 0) {
 573                 if (widthChange) {
 574                         // The visible LyXView need a resize
 575                         resizeCurrentBuffer();
 576
 577                         // Remove all texts from the textcache
 578                         // This is not _really_ what we want to do. What
 579                         // we really want to do is to delete in textcache
 580                         // that does not have a BufferView with matching
 581                         // width, but as long as we have only one BufferView
 582                         // deleting all gives the same result.
 583                         if (lyxerr.debugging())
 584                                 textcache.show(lyxerr, "Expose delete all");
 585                         textcache.clear();
 586                         // FIXME: this is already done in resizeCurrentBuffer() ??
 587                         buffer_->resizeInsets(bv_);
 588                 } else if (heightChange) {
 589                         // fitCursor() ensures we don't jump back
 590                         // to the start of the document on vertical
 591                         // resize
 592                         fitCursor();
 593                 }
 594         }
 595
 596         if (widthChange || heightChange) {
 597                 repaint();
 598         }
 599
 600         // always make sure that the scrollbar is sane.
 601         updateScrollbar();
 602         owner_->updateLayoutChoice();
 603         return;
 604 }
 605
 606
 607 void BufferView::Pimpl::update()
 608 {
 609         if (!bv_->theLockingInset() || !bv_->theLockingInset()->nodraw()) {
 610                 screen().update(*bv_);
 611                 bv_->text->clearPaint();
 612         }
 613 }
 614
 615
 616 void BufferView::Pimpl::update(LyXText * text, BufferView::UpdateCodes f)
 617 {
 618         if (!text->selection.set() && (f & SELECT)) {
 619                 text->selection.cursor = text->cursor;
 620         }
 621
 622         text->fullRebreak();
 623
 624         if (text->inset_owner) {
 625                 text->inset_owner->setUpdateStatus(bv_, InsetText::NONE);
 626                 updateInset(text->inset_owner);
 627         } else {
 628                 update();
 629         }
 630 }
 631
 632
 633 void BufferView::Pimpl::update(BufferView::UpdateCodes f)
 634 {
 635         LyXText * text = bv_->text;
 636
 637         if (!text->selection.set() && (f & SELECT)) {
 638                 text->selection.cursor = text->cursor;
 639         }
 640
 641         text->fullRebreak();
 642
 643         if (text->inset_owner) {
 644                 text->inset_owner->setUpdateStatus(bv_, InsetText::NONE);
 645                 updateInset(text->inset_owner);
 646         } else {
 647                 update();
 648         }
 649 }
 650
 651
 652 // Callback for cursor timer
 653 void BufferView::Pimpl::cursorToggle()
 654 {
 655         if (!buffer_) {
 656                 cursor_timeout.restart();
 657                 return;
 658         }
 659
 660         screen().toggleCursor(*bv_);
 661
 662         cursor_timeout.restart();
 663 }
 664
 665
 666 bool BufferView::Pimpl::available() const
 667 {
 668         if (buffer_ && bv_->text)
 669                 return true;
 670         return false;
 671 }
 672
 673
 674 Change const BufferView::Pimpl::getCurrentChange()
 675 {
 676         if (!bv_->buffer()->params.tracking_changes)
 677                 return Change(Change::UNCHANGED);
 678
 679         LyXText * t(bv_->getLyXText());
 680
 681         if (!t->selection.set())
 682                 return Change(Change::UNCHANGED);
 683
 684         LyXCursor const & cur(t->selection.start);
 685         return cur.par()->lookupChangeFull(cur.pos());
 686 }
 687
 688
 689 void BufferView::Pimpl::beforeChange(LyXText * text)
 690 {
 691         toggleSelection();
 692         text->clearSelection();
 693 }
 694
 695
 696 void BufferView::Pimpl::savePosition(unsigned int i)
 697 {
 698         if (i >= saved_positions_num)
 699                 return;
 700         saved_positions[i] = Position(buffer_->fileName(),
 701                                       bv_->text->cursor.par()->id(),
 702                                       bv_->text->cursor.pos());
 703         if (i > 0)
 704                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 705 }
 706
 707
 708 void BufferView::Pimpl::restorePosition(unsigned int i)
 709 {
 710         if (i >= saved_positions_num)
 711                 return;
 712
 713         string const fname = saved_positions[i].filename;
 714
 715         beforeChange(bv_->text);
 716
 717         if (fname != buffer_->fileName()) {
 718                 Buffer * b;
 719                 if (bufferlist.exists(fname))
 720                         b = bufferlist.getBuffer(fname);
 721                 else {
 722                         b = bufferlist.newBuffer(fname);
 723                         ::loadLyXFile(b, fname); // don't ask, just load it
 724                 }
 725                 if (b != 0)
 726                         buffer(b);
 727         }
 728
 729         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 730         if (par == buffer_->par_iterator_end())
 731                 return;
 732
 733         bv_->text->setCursor(par.pit(),
 734                              min(par->size(), saved_positions[i].par_pos));
 735
 736         update(BufferView::SELECT);
 737         if (i > 0)
 738                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 739 }
 740
 741
 742 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 743 {
 744         if (i >= saved_positions_num)
 745                 return false;
 746
 747         return !saved_positions[i].filename.empty();
 748 }
 749
 750
 751 void BufferView::Pimpl::switchKeyMap()
 752 {
 753         if (!lyxrc.rtl_support)
 754                 return;
 755
 756         LyXText * text = bv_->getLyXText();
 757         if (text->real_current_font.isRightToLeft()
 758             && !(bv_->theLockingInset()
 759                  && bv_->theLockingInset()->lyxCode() == Inset::ERT_CODE))
 760         {
 761                 if (owner_->getIntl().keymap == Intl::PRIMARY)
 762                         owner_->getIntl().KeyMapSec();
 763         } else {
 764                 if (owner_->getIntl().keymap == Intl::SECONDARY)
 765                         owner_->getIntl().KeyMapPrim();
 766         }
 767 }
 768
 769
 770 void BufferView::Pimpl::insetUnlock()
 771 {
 772         if (bv_->theLockingInset()) {
 773                 bv_->theLockingInset()->insetUnlock(bv_);
 774                 bv_->theLockingInset(0);
 775                 finishUndo();
 776         }
 777 }
 778
 779
 780 void BufferView::Pimpl::toggleSelection(bool b)
 781 {
 782         if (bv_->theLockingInset())
 783                 bv_->theLockingInset()->toggleSelection(bv_, b);
 784         screen().toggleSelection(bv_->text, bv_, b);
 785 }
 786
 787
 788 void BufferView::Pimpl::toggleToggle()
 789 {
 790         screen().toggleToggle(bv_->text, bv_);
 791 }
 792
 793
 794 void BufferView::Pimpl::center()
 795 {
 796         LyXText * t = bv_->text;
 797
 798         beforeChange(t);
 799         int const half_height = workarea().workHeight() / 2;
 800         int new_y = 0;
 801
 802         if (t->cursor.y() > half_height) {
 803                 new_y = t->cursor.y() - half_height;
 804         }
 805
 806         // FIXME: look at this comment again ...
 807
 808         // FIXME: can we do this w/o calling screen directly ?
 809         // This updates top_y() but means the fitCursor() call
 810         // from the update(FITCUR) doesn't realise that we might
 811         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 812         // the scrollbar to be updated as it should, so we have
 813         // to do it manually. Any operation that does a center()
 814         // and also might have moved top_y() must make sure to call
 815         // updateScrollbar() currently. Never mind that this is a
 816         // pretty obfuscated way of updating t->top_y()
 817         screen().draw(t, bv_, new_y);
 818
 819         update(BufferView::SELECT);
 820 }
 821
 822
 823 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 824 {
 825         workarea().putClipboard(stuff);
 826 }
 827
 828
 829 /*
 830  * Dispatch functions for actions which can be valid for BufferView->text
 831  * and/or InsetText->text!!!
 832  */
 833
 834
 835 Inset * BufferView::Pimpl::getInsetByCode(Inset::Code code)
 836 {
 837 #if 0
 838         LyXCursor cursor = bv_->getLyXText()->cursor;
 839         Buffer::inset_iterator it =
 840                 find_if(Buffer::inset_iterator(
 841                         cursor.par(), cursor.pos()),
 842                         buffer_->inset_iterator_end(),
 843                         lyx::compare_memfun(&Inset::lyxCode, code));
 844         return it != buffer_->inset_iterator_end() ? (*it) : 0;
 845 #else
 846         // Ok, this is a little bit too brute force but it
 847         // should work for now. Better infrastructure is comming. (Lgb)
 848
 849         Buffer * b = bv_->buffer();
 850         LyXCursor cursor = bv_->getLyXText()->cursor;
 851
 852         Buffer::inset_iterator beg = b->inset_iterator_begin();
 853         Buffer::inset_iterator end = b->inset_iterator_end();
 854
 855         bool cursor_par_seen = false;
 856
 857         for (; beg != end; ++beg) {
 858                 if (beg.getPar() == cursor.par()) {
 859                         cursor_par_seen = true;
 860                 }
 861                 if (cursor_par_seen) {
 862                         if (beg.getPar() == cursor.par()
 863                             && beg.getPos() >= cursor.pos()) {
 864                                 break;
 865                         } else if (beg.getPar() != cursor.par()) {
 866                                 break;
 867                         }
 868                 }
 869
 870         }
 871         if (beg != end) {
 872                 // Now find the first inset that matches code.
 873                 for (; beg != end; ++beg) {
 874                         if (beg->lyxCode() == code) {
 875                                 return &(*beg);
 876                         }
 877                 }
 878         }
 879         return 0;
 880 #endif
 881 }
 882
 883
 884 void BufferView::Pimpl::MenuInsertLyXFile(string const & filen)
 885 {
 886         string filename = filen;
 887
 888         if (filename.empty()) {
 889                 // Launch a file browser
 890                 string initpath = lyxrc.document_path;
 891
 892                 if (available()) {
 893                         string const trypath = owner_->buffer()->filePath();
 894                         // If directory is writeable, use this as default.
 895                         if (IsDirWriteable(trypath))
 896                                 initpath = trypath;
 897                 }
 898
 899                 FileDialog fileDlg(_("Select LyX document to insert"),
 900                         LFUN_FILE_INSERT,
 901                         make_pair(string(_("Documents|#o#O")),
 902                                   string(lyxrc.document_path)),
 903                         make_pair(string(_("Examples|#E#e")),
 904                                   string(AddPath(system_lyxdir, "examples"))));
 905
 906                 FileDialog::Result result =
 907                         fileDlg.open(initpath,
 908                                        _("*.lyx| LyX Documents (*.lyx)"));
 909
 910                 if (result.first == FileDialog::Later)
 911                         return;
 912
 913                 filename = result.second;
 914
 915                 // check selected filename
 916                 if (filename.empty()) {
 917                         owner_->message(_("Canceled."));
 918                         return;
 919                 }
 920         }
 921
 922         // get absolute path of file and add ".lyx" to the filename if
 923         // necessary
 924         filename = FileSearch(string(), filename, "lyx");
 925
 926         string const disp_fn = MakeDisplayPath(filename);
 927         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 928         bool const res = bv_->insertLyXFile(filename);
 929         if (res)
 930                 owner_->message(bformat(_("Document %1$s inserted."), disp_fn));
 931         else
 932                 owner_->message(bformat(_("Could not insert document %1$s"), disp_fn));
 933 }
 934
 935
 936 void BufferView::Pimpl::trackChanges()
 937 {
 938         Buffer * buf(bv_->buffer());
 939         bool const tracking(buf->params.tracking_changes);
 940
 941         if (!tracking) {
 942                 ParIterator const end = buf->par_iterator_end();
 943                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 944                         it->trackChanges();
 945                 buf->params.tracking_changes = true;
 946
 947                 // we cannot allow undos beyond the freeze point
 948                 buf->undostack.clear();
 949         } else {
 950                 update(BufferView::SELECT);
 951                 bv_->text->setCursor(buf->paragraphs.begin(), 0);
 952 #warning changes FIXME
 953                 //moveCursorUpdate(false);
 954
 955                 bool found = lyxfind::findNextChange(bv_);
 956                 if (found) {
 957                         owner_->getDialogs().show("changes");
 958                         return;
 959                 }
 960
 961                 ParIterator const end = buf->par_iterator_end();
 962                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 963                         it->untrackChanges();
 964                 buf->params.tracking_changes = false;
 965         }
 966
 967         buf->redostack.clear();
 968 }
 969
 970
 971 // Doesn't go through lyxfunc, so we need to update the
 972 // layout choice etc. ourselves
 973 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & ev_in)
 974 {
 975         // e.g. Qt mouse press when no buffer
 976         if (!available())
 977                 return false;
 978
 979         screen().hideCursor();
 980
 981         bool const res = dispatch(ev_in);
 982
 983         // see workAreaKeyPress
 984         cursor_timeout.restart();
 985         screen().showCursor(*bv_);
 986
 987         // FIXME: we should skip these when selecting
 988         bv_->owner()->updateLayoutChoice();
 989         bv_->owner()->updateToolbar();
 990         bv_->fitCursor();
 991
 992         // slight hack: this is only called currently when
 993         // we clicked somewhere, so we force through the display
 994         // of the new status here.
 995         bv_->owner()->clearMessage();
 996
 997         return res;
 998 }
 999
1000
1001 bool BufferView::Pimpl::dispatch(FuncRequest const & ev_in)
1002 {
1003         // Make sure that the cached BufferView is correct.
1004         FuncRequest ev = ev_in;
1005         ev.setView(bv_);
1006
1007         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
1008                 << " action[" << ev.action << ']'
1009                 << " arg[" << ev.argument << ']'
1010                 << " x[" << ev.x << ']'
1011                 << " y[" << ev.y << ']'
1012                 << " button[" << ev.button() << ']'
1013                 << endl;
1014
1015         LyXTextClass const & tclass = buffer_->params.getLyXTextClass();
1016
1017         switch (ev.action) {
1018
1019         case LFUN_SCROLL_INSET:
1020                 // this is not handled here as this function is only active
1021                 // if we have a locking_inset and that one is (or contains)
1022                 // a tabular-inset
1023                 break;
1024
1025         case LFUN_FILE_INSERT:
1026                 MenuInsertLyXFile(ev.argument);
1027                 break;
1028
1029         case LFUN_FILE_INSERT_ASCII_PARA:
1030                 InsertAsciiFile(bv_, ev.argument, true);
1031                 break;
1032
1033         case LFUN_FILE_INSERT_ASCII:
1034                 InsertAsciiFile(bv_, ev.argument, false);
1035                 break;
1036
1037         case LFUN_LANGUAGE:
1038                 lang(bv_, ev.argument);
1039                 switchKeyMap();
1040                 owner_->view_state_changed();
1041                 break;
1042
1043         case LFUN_EMPH:
1044                 emph(bv_);
1045                 owner_->view_state_changed();
1046                 break;
1047
1048         case LFUN_BOLD:
1049                 bold(bv_);
1050                 owner_->view_state_changed();
1051                 break;
1052
1053         case LFUN_NOUN:
1054                 noun(bv_);
1055                 owner_->view_state_changed();
1056                 break;
1057
1058         case LFUN_CODE:
1059                 code(bv_);
1060                 owner_->view_state_changed();
1061                 break;
1062
1063         case LFUN_SANS:
1064                 sans(bv_);
1065                 owner_->view_state_changed();
1066                 break;
1067
1068         case LFUN_ROMAN:
1069                 roman(bv_);
1070                 owner_->view_state_changed();
1071                 break;
1072
1073         case LFUN_DEFAULT:
1074                 styleReset(bv_);
1075                 owner_->view_state_changed();
1076                 break;
1077
1078         case LFUN_UNDERLINE:
1079                 underline(bv_);
1080                 owner_->view_state_changed();
1081                 break;
1082
1083         case LFUN_FONT_SIZE:
1084                 fontSize(bv_, ev.argument);
1085                 owner_->view_state_changed();
1086                 break;
1087
1088         case LFUN_FONT_STATE:
1089                 owner_->getLyXFunc().setMessage(currentState(bv_));
1090                 break;
1091
1092         case LFUN_INSERT_LABEL: {
1093                 // Try and generate a valid label
1094                 string const contents = ev.argument.empty() ?
1095                         getPossibleLabel(*bv_) : ev.argument;
1096                 InsetCommandParams icp("label", contents);
1097                 string data = InsetCommandMailer::params2string("label", icp);
1098                 owner_->getDialogs().show("label", data, 0);
1099         }
1100         break;
1101
1102         case LFUN_BOOKMARK_SAVE:
1103                 savePosition(strToUnsignedInt(ev.argument));
1104                 break;
1105
1106         case LFUN_BOOKMARK_GOTO:
1107                 restorePosition(strToUnsignedInt(ev.argument));
1108                 break;
1109
1110         case LFUN_REF_GOTO: {
1111                 string label = ev.argument;
1112                 if (label.empty()) {
1113                         InsetRef * inset =
1114                                 static_cast<InsetRef*>(getInsetByCode(Inset::REF_CODE));
1115                         if (inset) {
1116                                 label = inset->getContents();
1117                                 savePosition(0);
1118                         }
1119                 }
1120
1121                 if (!label.empty())
1122                         bv_->gotoLabel(label);
1123         }
1124         break;
1125
1126         // --- accented characters ---------------------------
1127
1128         case LFUN_UMLAUT:
1129         case LFUN_CIRCUMFLEX:
1130         case LFUN_GRAVE:
1131         case LFUN_ACUTE:
1132         case LFUN_TILDE:
1133         case LFUN_CEDILLA:
1134         case LFUN_MACRON:
1135         case LFUN_DOT:
1136         case LFUN_UNDERDOT:
1137         case LFUN_UNDERBAR:
1138         case LFUN_CARON:
1139         case LFUN_SPECIAL_CARON:
1140         case LFUN_BREVE:
1141         case LFUN_TIE:
1142         case LFUN_HUNG_UMLAUT:
1143         case LFUN_CIRCLE:
1144         case LFUN_OGONEK:
1145                 if (ev.argument.empty()) {
1146                         // As always...
1147                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1148                 } else {
1149                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1150                         owner_->getIntl().getTransManager()
1151                                 .TranslateAndInsert(ev.argument[0], bv_->getLyXText());
1152                         update(bv_->getLyXText(), BufferView::SELECT);
1153                 }
1154                 break;
1155
1156         case LFUN_MATH_MACRO:
1157         case LFUN_MATH_DELIM:
1158         case LFUN_INSERT_MATRIX:
1159         case LFUN_INSERT_MATH:
1160         case LFUN_MATH_IMPORT_SELECTION: // Imports LaTeX from the X selection
1161         case LFUN_MATH_DISPLAY:          // Open or create a displayed math inset
1162         case LFUN_MATH_MODE:             // Open or create an inlined math inset
1163                 mathDispatch(ev);
1164                 break;
1165
1166         case LFUN_INSET_APPLY: {
1167                 string const name = ev.getArg(0);
1168
1169                 InsetBase * inset = owner_->getDialogs().getOpenInset(name);
1170                 if (inset) {
1171                         // This works both for 'original' and 'mathed' insets.
1172                         // Note that the localDispatch performs updateInset
1173                         // also.
1174                         FuncRequest fr(bv_, LFUN_INSET_MODIFY, ev.argument);
1175                         inset->localDispatch(fr);
1176                 } else {
1177                         FuncRequest fr(bv_, LFUN_INSET_INSERT, ev.argument);
1178                         dispatch(fr);
1179                 }
1180         }
1181         break;
1182
1183         case LFUN_INSET_INSERT: {
1184                 Inset * inset = createInset(ev);
1185                 if (inset && insertInset(inset)) {
1186                         updateInset(inset);
1187
1188                         string const name = ev.getArg(0);
1189                         if (name == "bibitem") {
1190                                 // We need to do a redraw because the maximum
1191                                 // InsetBibitem width could have changed
1192 #warning please check you mean repaint() not update(),
1193 #warning and whether the repaint() is needed at all
1194                                 bv_->repaint();
1195                                 bv_->fitCursor();
1196                         }
1197                 } else {
1198                         delete inset;
1199                 }
1200         }
1201         break;
1202
1203         case LFUN_FLOAT_LIST:
1204                 if (tclass.floats().typeExist(ev.argument)) {
1205                         Inset * inset = new InsetFloatList(ev.argument);
1206                         if (!insertInset(inset, tclass.defaultLayoutName()))
1207                                 delete inset;
1208                 } else {
1209                         lyxerr << "Non-existent float type: "
1210                                << ev.argument << endl;
1211                 }
1212                 break;
1213
1214         case LFUN_LAYOUT_PARAGRAPH: {
1215                 Paragraph const * par = &*bv_->getLyXText()->cursor.par();
1216                 if (!par)
1217                         break;
1218
1219                 string data;
1220                 params2string(*par, data);
1221
1222                 data = "show\n" + data;
1223                 bv_->owner()->getDialogs().show("paragraph", data);
1224                 break;
1225         }
1226
1227         case LFUN_PARAGRAPH_UPDATE: {
1228                 if (!bv_->owner()->getDialogs().visible("paragraph"))
1229                         break;
1230                 Paragraph const * par = &*bv_->getLyXText()->cursor.par();
1231                 if (!par)
1232                         break;
1233
1234                 string data;
1235                 params2string(*par, data);
1236
1237                 // Will the paragraph accept changes from the dialog?
1238                 Inset * const inset = par->inInset();
1239                 bool const accept =
1240                         !(inset && inset->forceDefaultParagraphs(inset));
1241
1242                 data = "update " + tostr(accept) + '\n' + data;
1243                 bv_->owner()->getDialogs().update("paragraph", data);
1244                 break;
1245         }
1246
1247         case LFUN_PARAGRAPH_APPLY:
1248                 setParagraphParams(*bv_, ev.argument);
1249                 break;
1250
1251         case LFUN_THESAURUS_ENTRY:
1252         {
1253                 string arg = ev.argument;
1254
1255                 if (arg.empty()) {
1256                         arg = bv_->getLyXText()->selectionAsString(buffer_,
1257                                                                    false);
1258
1259                         // FIXME
1260                         if (arg.size() > 100 || arg.empty()) {
1261                                 // Get word or selection
1262                                 bv_->getLyXText()->selectWordWhenUnderCursor(LyXText::WHOLE_WORD);
1263                                 arg = bv_->getLyXText()->selectionAsString(buffer_, false);
1264                                 // FIXME: where is getLyXText()->unselect(bv_) ?
1265                         }
1266                 }
1267
1268                 bv_->owner()->getDialogs().show("thesaurus", arg);
1269         }
1270                 break;
1271
1272         case LFUN_TRACK_CHANGES:
1273                 trackChanges();
1274                 break;
1275
1276         case LFUN_MERGE_CHANGES:
1277                 owner_->getDialogs().show("changes");
1278                 break;
1279
1280         case LFUN_ACCEPT_ALL_CHANGES: {
1281                 update(BufferView::SELECT);
1282                 bv_->text->setCursor(bv_->buffer()->paragraphs.begin(), 0);
1283 #warning FIXME changes
1284                 //moveCursorUpdate(false);
1285
1286                 while (lyxfind::findNextChange(bv_)) {
1287                         bv_->getLyXText()->acceptChange();
1288                 }
1289                 update(BufferView::SELECT);
1290                 break;
1291         }
1292
1293         case LFUN_REJECT_ALL_CHANGES: {
1294                 update(BufferView::SELECT);
1295                 bv_->text->setCursor(bv_->buffer()->paragraphs.begin(), 0);
1296 #warning FIXME changes
1297                 //moveCursorUpdate(false);
1298
1299                 while (lyxfind::findNextChange(bv_)) {
1300                         bv_->getLyXText()->rejectChange();
1301                 }
1302                 update(BufferView::SELECT);
1303                 break;
1304         }
1305
1306         case LFUN_ACCEPT_CHANGE: {
1307                 bv_->getLyXText()->acceptChange();
1308                 update(BufferView::SELECT);
1309                 break;
1310         }
1311
1312         case LFUN_REJECT_CHANGE: {
1313                 bv_->getLyXText()->rejectChange();
1314                 update(BufferView::SELECT);
1315                 break;
1316         }
1317
1318         case LFUN_UNKNOWN_ACTION:
1319                 ev.errorMessage(N_("Unknown function!"));
1320                 break;
1321
1322         default:
1323                 return bv_->getLyXText()->dispatch(FuncRequest(ev, bv_));
1324         } // end of switch
1325
1326         return true;
1327 }
1328
1329
1330 bool BufferView::Pimpl::insertInset(Inset * inset, string const & lout)
1331 {
1332         // if we are in a locking inset we should try to insert the
1333         // inset there otherwise this is a illegal function now
1334         if (bv_->theLockingInset()) {
1335                 if (bv_->theLockingInset()->insetAllowed(inset))
1336                         return bv_->theLockingInset()->insertInset(bv_, inset);
1337                 return false;
1338         }
1339
1340         // not quite sure if we want this...
1341         setCursorParUndo(bv_);
1342         freezeUndo();
1343
1344         beforeChange(bv_->text);
1345         if (!lout.empty()) {
1346                 update(BufferView::SELECT);
1347                 bv_->text->breakParagraph(bv_->buffer()->paragraphs);
1348                 update(BufferView::SELECT);
1349
1350                 if (!bv_->text->cursor.par()->empty()) {
1351                         bv_->text->cursorLeft(bv_);
1352
1353                         bv_->text->breakParagraph(bv_->buffer()->paragraphs);
1354                         update(BufferView::SELECT);
1355                 }
1356
1357                 string lres = lout;
1358                 LyXTextClass const & tclass =
1359                         buffer_->params.getLyXTextClass();
1360                 bool hasLayout = tclass.hasLayout(lres);
1361                 string lay = tclass.defaultLayoutName();
1362
1363                 if (hasLayout != false) {
1364                         // layout found
1365                         lay = lres;
1366                 } else {
1367                         // layout not fount using default
1368                         lay = tclass.defaultLayoutName();
1369                 }
1370
1371                 bv_->text->setLayout(lay);
1372
1373                 bv_->text->setParagraph(0, 0,
1374                                    0, 0,
1375                                    VSpace(VSpace::NONE), VSpace(VSpace::NONE),
1376                                    Spacing(),
1377                                    LYX_ALIGN_LAYOUT,
1378                                    string(),
1379                                    0);
1380                 update(BufferView::SELECT);
1381         }
1382
1383         bv_->text->insertInset(inset);
1384         update(BufferView::SELECT);
1385
1386         unFreezeUndo();
1387         return true;
1388 }
1389
1390
1391 void BufferView::Pimpl::updateInset(Inset * inset)
1392 {
1393         if (!inset || !available())
1394                 return;
1395
1396         // first check for locking insets
1397         if (bv_->theLockingInset()) {
1398                 if (bv_->theLockingInset() == inset) {
1399                         if (bv_->text->updateInset(inset)) {
1400                                 update();
1401                                 updateScrollbar();
1402                                 return;
1403                         }
1404                 } else if (bv_->theLockingInset()->updateInsetInInset(bv_, inset)) {
1405                         if (bv_->text->updateInset(bv_->theLockingInset())) {
1406                                 update();
1407                                 updateScrollbar();
1408                                 return;
1409                         }
1410                 }
1411         }
1412
1413         // then check if the inset is a top_level inset (has no owner)
1414         // if yes do the update as always otherwise we have to update the
1415         // toplevel inset where this inset is inside
1416         Inset * tl_inset = inset;
1417         while (tl_inset->owner())
1418                 tl_inset = tl_inset->owner();
1419         if (tl_inset == inset) {
1420                 update(BufferView::UPDATE);
1421                 if (bv_->text->updateInset(inset)) {
1422                         update(BufferView::SELECT);
1423                         return;
1424                 }
1425         } else if (static_cast<UpdatableInset *>(tl_inset)
1426                            ->updateInsetInInset(bv_, inset))
1427         {
1428                 if (bv_->text->updateInset(tl_inset)) {
1429                         update();
1430                         updateScrollbar();
1431                 }
1432         }
1433 }