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 "lyxrow.h"
  33 #include "lastfiles.h"
  34 #include "paragraph.h"
  35 #include "ParagraphParameters.h"
  36 #include "TextCache.h"
  37 #include "undo_funcs.h"
  38
  39 #include "insets/insetfloatlist.h"
  40 #include "insets/insetgraphics.h"
  41 #include "insets/insetinclude.h"
  42 #include "insets/insetref.h"
  43 #include "insets/insettext.h"
  44
  45 #include "frontends/Alert.h"
  46 #include "frontends/Dialogs.h"
  47 #include "frontends/FileDialog.h"
  48 #include "frontends/LyXView.h"
  49 #include "frontends/LyXScreenFactory.h"
  50 #include "frontends/mouse_state.h"
  51 #include "frontends/screen.h"
  52 #include "frontends/WorkArea.h"
  53 #include "frontends/WorkAreaFactory.h"
  54
  55 #include "mathed/formulabase.h"
  56
  57 #include "graphics/Previews.h"
  58
  59 #include "support/LAssert.h"
  60 #include "support/tostr.h"
  61 #include "support/filetools.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::connectBuffer(Buffer & buf)
 142 {
 143         if (errorConnection_.connected())
 144                 disconnectBuffer();
 145
 146         errorConnection_ = buf.error.connect(boost::bind(&BufferView::Pimpl::addError, this, _1));
 147         messageConnection_ = buf.message.connect(boost::bind(&LyXView::message, owner_, _1));
 148         busyConnection_ = buf.busy.connect(boost::bind(&LyXView::busy, owner_, _1));
 149 }
 150
 151
 152 void BufferView::Pimpl::disconnectBuffer()
 153 {
 154         errorConnection_.disconnect();
 155         messageConnection_.disconnect();
 156         busyConnection_.disconnect();
 157 }
 158
 159
 160 bool BufferView::Pimpl::newFile(string const & filename,
 161                                 string const & tname,
 162                                 bool isNamed)
 163 {
 164         Buffer * b = ::newFile(filename, tname, isNamed);
 165         buffer(b);
 166         return true;
 167 }
 168
 169
 170 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 171 {
 172         // get absolute path of file and add ".lyx" to the filename if
 173         // necessary
 174         string s = FileSearch(string(), filename, "lyx");
 175         if (s.empty()) {
 176                 s = filename;
 177         }
 178
 179         // file already open?
 180         if (bufferlist.exists(s)) {
 181                 string const file = MakeDisplayPath(s, 20);
 182                 string text = bformat(_("The document %1$s is already "
 183                                         "loaded.\n\nDo you want to revert "
 184                                         "to the saved version?"), file);
 185                 int const ret = Alert::prompt(_("Revert to saved document?"),
 186                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 187
 188                 if (ret != 0) {
 189                         buffer(bufferlist.getBuffer(s));
 190                         return true;
 191                 } else {
 192                         // FIXME: should be LFUN_REVERT
 193                         if (!bufferlist.close(bufferlist.getBuffer(s), false))
 194                                 return false;
 195                         // Fall through to new load. (Asger)
 196                 }
 197         }
 198         Buffer * b = bufferlist.newBuffer(s);
 199
 200         connectBuffer(*b);
 201
 202         if (! ::loadLyXFile(b, s)) {
 203                 bufferlist.release(b);
 204                 string text = bformat(_("The document %1$s does not yet "
 205                                         "exist.\n\nDo you want to create "
 206                                         "a new document?"), s);
 207                 int const ret = Alert::prompt(_("Create new document?"),
 208                          text, 0, 1, _("&Create"), _("Cancel"));
 209
 210                 if (ret != 0)
 211                         return false;
 212         }
 213
 214         buffer(b);
 215
 216         if (tolastfiles)
 217                 lastfiles->newFile(b->fileName());
 218
 219         bv_->showErrorList(_("Parse"));
 220
 221         return true;
 222 }
 223
 224
 225 WorkArea & BufferView::Pimpl::workarea() const
 226 {
 227         return *workarea_.get();
 228 }
 229
 230
 231 LyXScreen & BufferView::Pimpl::screen() const
 232 {
 233         return *screen_.get();
 234 }
 235
 236
 237 Painter & BufferView::Pimpl::painter() const
 238 {
 239         return workarea().getPainter();
 240 }
 241
 242
 243 void BufferView::Pimpl::buffer(Buffer * b)
 244 {
 245         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 246                             << b << ')' << endl;
 247         if (buffer_) {
 248                 disconnectBuffer();
 249                 buffer_->delUser(bv_);
 250
 251                 // Put the old text into the TextCache, but
 252                 // only if the buffer is still loaded.
 253                 // Also set the owner of the test to 0
 254                 //              bv_->text->owner(0);
 255                 textcache.add(buffer_, workarea().workWidth(), bv_->text);
 256                 if (lyxerr.debugging())
 257                         textcache.show(lyxerr, "BufferView::buffer");
 258
 259                 bv_->text = 0;
 260         }
 261
 262         // set current buffer
 263         buffer_ = b;
 264
 265         // if we're quitting lyx, don't bother updating stuff
 266         if (quitting)
 267                 return;
 268
 269         // if we are closing the buffer, use the first buffer as current
 270         if (!buffer_) {
 271                 buffer_ = bufferlist.first();
 272         }
 273
 274         if (buffer_) {
 275                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 276                 buffer_->addUser(bv_);
 277                 connectBuffer(*buffer_);
 278
 279                 // If we don't have a text object for this, we make one
 280                 if (bv_->text == 0) {
 281                         resizeCurrentBuffer();
 282                 }
 283
 284                 // FIXME: needed when ?
 285                 bv_->text->top_y(screen().topCursorVisible(bv_->text));
 286
 287                 // Buffer-dependent dialogs should be updated or
 288                 // hidden. This should go here because some dialogs (eg ToC)
 289                 // require bv_->text.
 290                 owner_->getDialogs().updateBufferDependent(true);
 291         } else {
 292                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 293                 owner_->getDialogs().hideBufferDependent();
 294
 295                 // Also remove all remaining text's from the testcache.
 296                 // (there should not be any!) (if there is any it is a
 297                 // bug!)
 298                 if (lyxerr.debugging())
 299                         textcache.show(lyxerr, "buffer delete all");
 300                 textcache.clear();
 301         }
 302
 303         repaint();
 304         updateScrollbar();
 305         owner_->updateMenubar();
 306         owner_->updateToolbar();
 307         owner_->updateLayoutChoice();
 308         owner_->updateWindowTitle();
 309
 310         if (buffer_) {
 311                 // Don't forget to update the Layout
 312                 string const layoutname =
 313                         bv_->text->cursor.par()->layout()->name();
 314                 owner_->setLayout(layoutname);
 315         }
 316
 317         if (grfx::Previews::activated() && buffer_)
 318                 grfx::Previews::get().generateBufferPreviews(*buffer_);
 319 }
 320
 321
 322 bool BufferView::Pimpl::fitCursor()
 323 {
 324         bool ret;
 325
 326         if (bv_->theLockingInset()) {
 327                 bv_->theLockingInset()->fitInsetCursor(bv_);
 328                 ret = true;
 329         } else {
 330                 ret = screen().fitCursor(bv_->text, bv_);
 331         }
 332
 333         dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
 334
 335         // We need to always update, in case we did a
 336         // paste and we stayed anchored to a row, but
 337         // the actual height of the doc changed ...
 338         updateScrollbar();
 339         return ret;
 340 }
 341
 342
 343 void BufferView::Pimpl::redoCurrentBuffer()
 344 {
 345         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 346         if (buffer_ && bv_->text) {
 347                 resizeCurrentBuffer();
 348                 updateScrollbar();
 349                 owner_->updateLayoutChoice();
 350                 repaint();
 351         }
 352 }
 353
 354
 355 int BufferView::Pimpl::resizeCurrentBuffer()
 356 {
 357         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 358
 359         ParagraphList::iterator par;
 360         ParagraphList::iterator selstartpar;
 361         ParagraphList::iterator selendpar;
 362         UpdatableInset * the_locking_inset = 0;
 363
 364         pos_type pos = 0;
 365         pos_type selstartpos = 0;
 366         pos_type selendpos = 0;
 367         bool selection = false;
 368         bool mark_set  = false;
 369
 370         owner_->busy(true);
 371
 372         owner_->message(_("Formatting document..."));
 373
 374         if (bv_->text) {
 375                 par = bv_->text->cursor.par();
 376                 pos = bv_->text->cursor.pos();
 377                 selstartpar = bv_->text->selection.start.par();
 378                 selstartpos = bv_->text->selection.start.pos();
 379                 selendpar = bv_->text->selection.end.par();
 380                 selendpos = bv_->text->selection.end.pos();
 381                 selection = bv_->text->selection.set();
 382                 mark_set = bv_->text->selection.mark();
 383                 the_locking_inset = bv_->theLockingInset();
 384                 buffer_->resizeInsets(bv_);
 385                 bv_->text->init(bv_);
 386         } else {
 387                 lyxerr << "text not available!\n";
 388                 // See if we have a text in TextCache that fits
 389                 // the new buffer_ with the correct width.
 390                 bv_->text = textcache.findFit(buffer_, workarea().workWidth());
 391                 if (bv_->text) {
 392                         lyxerr << "text in cache!\n";
 393                         if (lyxerr.debugging()) {
 394                                 lyxerr << "Found a LyXText that fits:\n";
 395                                 textcache.show(lyxerr, make_pair(buffer_, make_pair(workarea().workWidth(), bv_->text)));
 396                         }
 397                         // Set the owner of the newly found text
 398                         //      bv_->text->owner(bv_);
 399                         if (lyxerr.debugging())
 400                                 textcache.show(lyxerr, "resizeCurrentBuffer");
 401
 402                         buffer_->resizeInsets(bv_);
 403                 } else {
 404                         lyxerr << "no text in cache!\n";
 405                         bv_->text = new LyXText(bv_);
 406                         buffer_->resizeInsets(bv_);
 407                         bv_->text->init(bv_);
 408                 }
 409
 410                 par = bv_->text->ownerParagraphs().end();
 411                 selstartpar = bv_->text->ownerParagraphs().end();
 412                 selendpar = bv_->text->ownerParagraphs().end();
 413         }
 414
 415         if (par != bv_->text->ownerParagraphs().end()) {
 416                 bv_->text->selection.set(true);
 417                 // At this point just to avoid the Delete-Empty-Paragraph-
 418                 // Mechanism when setting the cursor.
 419                 bv_->text->selection.mark(mark_set);
 420                 if (selection) {
 421                         bv_->text->setCursor(selstartpar, selstartpos);
 422                         bv_->text->selection.cursor = bv_->text->cursor;
 423                         bv_->text->setCursor(selendpar, selendpos);
 424                         bv_->text->setSelection();
 425                         bv_->text->setCursor(par, pos);
 426                 } else {
 427                         bv_->text->setCursor(par, pos);
 428                         bv_->text->selection.cursor = bv_->text->cursor;
 429                         bv_->text->selection.set(false);
 430                 }
 431                 // remake the inset locking
 432                 bv_->theLockingInset(the_locking_inset);
 433         }
 434
 435         bv_->text->top_y(screen().topCursorVisible(bv_->text));
 436
 437         switchKeyMap();
 438         owner_->busy(false);
 439
 440         // reset the "Formatting..." message
 441         owner_->clearMessage();
 442
 443         updateScrollbar();
 444
 445         return 0;
 446 }
 447
 448
 449 void BufferView::Pimpl::repaint()
 450 {
 451         // Regenerate the screen.
 452         screen().redraw(bv_->text, bv_);
 453 }
 454
 455
 456 void BufferView::Pimpl::updateScrollbar()
 457 {
 458         if (!bv_->text) {
 459                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 460                 workarea().setScrollbarParams(0, 0, 0);
 461                 return;
 462         }
 463
 464         LyXText const & t = *bv_->text;
 465
 466         lyxerr[Debug::GUI] << "Updating scrollbar: h " << t.height << ", top_y() "
 467                 << t.top_y() << ", default height " << defaultRowHeight() << endl;
 468
 469         workarea().setScrollbarParams(t.height, t.top_y(), defaultRowHeight());
 470 }
 471
 472
 473 void BufferView::Pimpl::scrollDocView(int value)
 474 {
 475         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 476
 477         if (!buffer_)
 478                 return;
 479
 480         screen().hideCursor();
 481
 482         screen().draw(bv_->text, bv_, value);
 483
 484         if (!lyxrc.cursor_follows_scrollbar)
 485                 return;
 486
 487         LyXText * vbt = bv_->text;
 488
 489         int const height = defaultRowHeight();
 490         int const first = static_cast<int>((bv_->text->top_y() + height));
 491         int const last = static_cast<int>((bv_->text->top_y() + workarea().workHeight() - height));
 492
 493         if (vbt->cursor.y() < first)
 494                 vbt->setCursorFromCoordinates(0, first);
 495         else if (vbt->cursor.y() > last)
 496                 vbt->setCursorFromCoordinates(0, last);
 497
 498         owner_->updateLayoutChoice();
 499 }
 500
 501
 502 void BufferView::Pimpl::scroll(int lines)
 503 {
 504         if (!buffer_) {
 505                 return;
 506         }
 507
 508         LyXText const * t = bv_->text;
 509         int const line_height = defaultRowHeight();
 510
 511         // The new absolute coordinate
 512         int new_top_y = t->top_y() + lines * line_height;
 513
 514         // Restrict to a valid value
 515         new_top_y = std::min(t->height - 4 * line_height, new_top_y);
 516         new_top_y = std::max(0, new_top_y);
 517
 518         scrollDocView(new_top_y);
 519
 520         // Update the scrollbar.
 521         workarea().setScrollbarParams(t->height, t->top_y(), defaultRowHeight());
 522 }
 523
 524
 525 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 526                                          key_modifier::state state)
 527 {
 528         bv_->owner()->getLyXFunc().processKeySym(key, state);
 529
 530         /* This is perhaps a bit of a hack. When we move
 531          * around, or type, it's nice to be able to see
 532          * the cursor immediately after the keypress. So
 533          * we reset the toggle timeout and force the visibility
 534          * of the cursor. Note we cannot do this inside
 535          * dispatch() itself, because that's called recursively.
 536          */
 537         if (available()) {
 538                 cursor_timeout.restart();
 539                 screen().showCursor(*bv_);
 540         }
 541 }
 542
 543
 544 void BufferView::Pimpl::selectionRequested()
 545 {
 546         static string sel;
 547
 548         if (!available())
 549                 return;
 550
 551         LyXText * text = bv_->getLyXText();
 552
 553         if (text->selection.set() &&
 554                 (!bv_->text->xsel_cache.set() ||
 555                  text->selection.start != bv_->text->xsel_cache.start ||
 556                  text->selection.end != bv_->text->xsel_cache.end))
 557         {
 558                 bv_->text->xsel_cache = text->selection;
 559                 sel = text->selectionAsString(bv_->buffer(), false);
 560         } else if (!text->selection.set()) {
 561                 sel = string();
 562                 bv_->text->xsel_cache.set(false);
 563         }
 564         if (!sel.empty()) {
 565                 workarea().putClipboard(sel);
 566         }
 567 }
 568
 569
 570 void BufferView::Pimpl::selectionLost()
 571 {
 572         if (available()) {
 573                 screen().hideCursor();
 574                 toggleSelection();
 575                 bv_->getLyXText()->clearSelection();
 576                 bv_->text->xsel_cache.set(false);
 577         }
 578 }
 579
 580
 581 void BufferView::Pimpl::workAreaResize()
 582 {
 583         static int work_area_width;
 584         static int work_area_height;
 585
 586         bool const widthChange = workarea().workWidth() != work_area_width;
 587         bool const heightChange = workarea().workHeight() != work_area_height;
 588
 589         // update from work area
 590         work_area_width = workarea().workWidth();
 591         work_area_height = workarea().workHeight();
 592
 593         if (buffer_ != 0) {
 594                 if (widthChange) {
 595                         // The visible LyXView need a resize
 596                         resizeCurrentBuffer();
 597
 598                         // Remove all texts from the textcache
 599                         // This is not _really_ what we want to do. What
 600                         // we really want to do is to delete in textcache
 601                         // that does not have a BufferView with matching
 602                         // width, but as long as we have only one BufferView
 603                         // deleting all gives the same result.
 604                         if (lyxerr.debugging())
 605                                 textcache.show(lyxerr, "Expose delete all");
 606                         textcache.clear();
 607                         // FIXME: this is already done in resizeCurrentBuffer() ??
 608                         buffer_->resizeInsets(bv_);
 609                 } else if (heightChange) {
 610                         // fitCursor() ensures we don't jump back
 611                         // to the start of the document on vertical
 612                         // resize
 613                         fitCursor();
 614                 }
 615         }
 616
 617         if (widthChange || heightChange) {
 618                 repaint();
 619         }
 620
 621         // always make sure that the scrollbar is sane.
 622         updateScrollbar();
 623         owner_->updateLayoutChoice();
 624         return;
 625 }
 626
 627
 628 void BufferView::Pimpl::update()
 629 {
 630         if (!bv_->theLockingInset() || !bv_->theLockingInset()->nodraw()) {
 631                 screen().update(*bv_);
 632                 bv_->text->clearPaint();
 633         }
 634 }
 635
 636
 637 void BufferView::Pimpl::update(LyXText * text, BufferView::UpdateCodes f)
 638 {
 639         if (!text->selection.set() && (f & SELECT)) {
 640                 text->selection.cursor = text->cursor;
 641         }
 642
 643         text->partialRebreak();
 644
 645         if (text->inset_owner) {
 646                 text->inset_owner->setUpdateStatus(bv_, InsetText::NONE);
 647                 updateInset(text->inset_owner);
 648         } else {
 649                 update();
 650         }
 651 }
 652
 653
 654 void BufferView::Pimpl::update(BufferView::UpdateCodes f)
 655 {
 656         LyXText * text = bv_->text;
 657
 658         if (!text->selection.set() && (f & SELECT)) {
 659                 text->selection.cursor = text->cursor;
 660         }
 661
 662         text->partialRebreak();
 663
 664         if (text->inset_owner) {
 665                 text->inset_owner->setUpdateStatus(bv_, InsetText::NONE);
 666                 updateInset(text->inset_owner);
 667         } else {
 668                 update();
 669         }
 670 }
 671
 672
 673 // Callback for cursor timer
 674 void BufferView::Pimpl::cursorToggle()
 675 {
 676         if (!buffer_) {
 677                 cursor_timeout.restart();
 678                 return;
 679         }
 680
 681         screen().toggleCursor(*bv_);
 682
 683         cursor_timeout.restart();
 684 }
 685
 686
 687 bool BufferView::Pimpl::available() const
 688 {
 689         if (buffer_ && bv_->text)
 690                 return true;
 691         return false;
 692 }
 693
 694
 695 Change const BufferView::Pimpl::getCurrentChange()
 696 {
 697         if (!bv_->buffer()->params.tracking_changes)
 698                 return Change(Change::UNCHANGED);
 699
 700         LyXText * t(bv_->getLyXText());
 701
 702         if (!t->selection.set())
 703                 return Change(Change::UNCHANGED);
 704
 705         LyXCursor const & cur(t->selection.start);
 706         return cur.par()->lookupChangeFull(cur.pos());
 707 }
 708
 709
 710 void BufferView::Pimpl::beforeChange(LyXText * text)
 711 {
 712         toggleSelection();
 713         text->clearSelection();
 714 }
 715
 716
 717 void BufferView::Pimpl::savePosition(unsigned int i)
 718 {
 719         if (i >= saved_positions_num)
 720                 return;
 721         saved_positions[i] = Position(buffer_->fileName(),
 722                                       bv_->text->cursor.par()->id(),
 723                                       bv_->text->cursor.pos());
 724         if (i > 0)
 725                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 726 }
 727
 728
 729 void BufferView::Pimpl::restorePosition(unsigned int i)
 730 {
 731         if (i >= saved_positions_num)
 732                 return;
 733
 734         string const fname = saved_positions[i].filename;
 735
 736         beforeChange(bv_->text);
 737
 738         if (fname != buffer_->fileName()) {
 739                 Buffer * b;
 740                 if (bufferlist.exists(fname))
 741                         b = bufferlist.getBuffer(fname);
 742                 else {
 743                         b = bufferlist.newBuffer(fname);
 744                         ::loadLyXFile(b, fname); // don't ask, just load it
 745                 }
 746                 if (b != 0)
 747                         buffer(b);
 748         }
 749
 750         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 751         if (par == buffer_->par_iterator_end())
 752                 return;
 753
 754         bv_->text->setCursor(par.pit(),
 755                              min(par->size(), saved_positions[i].par_pos));
 756
 757         update(BufferView::SELECT);
 758         if (i > 0)
 759                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 760 }
 761
 762
 763 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 764 {
 765         if (i >= saved_positions_num)
 766                 return false;
 767
 768         return !saved_positions[i].filename.empty();
 769 }
 770
 771
 772 void BufferView::Pimpl::switchKeyMap()
 773 {
 774         if (!lyxrc.rtl_support)
 775                 return;
 776
 777         LyXText * text = bv_->getLyXText();
 778         if (text->real_current_font.isRightToLeft()
 779             && !(bv_->theLockingInset()
 780                  && bv_->theLockingInset()->lyxCode() == Inset::ERT_CODE))
 781         {
 782                 if (owner_->getIntl().keymap == Intl::PRIMARY)
 783                         owner_->getIntl().KeyMapSec();
 784         } else {
 785                 if (owner_->getIntl().keymap == Intl::SECONDARY)
 786                         owner_->getIntl().KeyMapPrim();
 787         }
 788 }
 789
 790
 791 void BufferView::Pimpl::insetUnlock()
 792 {
 793         if (bv_->theLockingInset()) {
 794                 bv_->theLockingInset()->insetUnlock(bv_);
 795                 bv_->theLockingInset(0);
 796                 finishUndo();
 797         }
 798 }
 799
 800
 801 void BufferView::Pimpl::toggleSelection(bool b)
 802 {
 803         if (bv_->theLockingInset())
 804                 bv_->theLockingInset()->toggleSelection(bv_, b);
 805         screen().toggleSelection(bv_->text, bv_, b);
 806 }
 807
 808
 809 void BufferView::Pimpl::toggleToggle()
 810 {
 811         screen().toggleToggle(bv_->text, bv_);
 812 }
 813
 814
 815 void BufferView::Pimpl::center()
 816 {
 817         LyXText * t = bv_->text;
 818
 819         beforeChange(t);
 820         int const half_height = workarea().workHeight() / 2;
 821         int new_y = 0;
 822
 823         if (t->cursor.y() > half_height) {
 824                 new_y = t->cursor.y() - half_height;
 825         }
 826
 827         // FIXME: look at this comment again ...
 828
 829         // FIXME: can we do this w/o calling screen directly ?
 830         // This updates top_y() but means the fitCursor() call
 831         // from the update(FITCUR) doesn't realise that we might
 832         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 833         // the scrollbar to be updated as it should, so we have
 834         // to do it manually. Any operation that does a center()
 835         // and also might have moved top_y() must make sure to call
 836         // updateScrollbar() currently. Never mind that this is a
 837         // pretty obfuscated way of updating t->top_y()
 838         screen().draw(t, bv_, new_y);
 839
 840         update(BufferView::SELECT);
 841 }
 842
 843
 844 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 845 {
 846         workarea().putClipboard(stuff);
 847 }
 848
 849
 850 /*
 851  * Dispatch functions for actions which can be valid for BufferView->text
 852  * and/or InsetText->text!!!
 853  */
 854
 855
 856 Inset * BufferView::Pimpl::getInsetByCode(Inset::Code code)
 857 {
 858 #if 0
 859         LyXCursor cursor = bv_->getLyXText()->cursor;
 860         Buffer::inset_iterator it =
 861                 find_if(Buffer::inset_iterator(
 862                         cursor.par(), cursor.pos()),
 863                         buffer_->inset_iterator_end(),
 864                         lyx::compare_memfun(&Inset::lyxCode, code));
 865         return it != buffer_->inset_iterator_end() ? (*it) : 0;
 866 #else
 867         // Ok, this is a little bit too brute force but it
 868         // should work for now. Better infrastructure is comming. (Lgb)
 869
 870         Buffer * b = bv_->buffer();
 871         LyXCursor cursor = bv_->getLyXText()->cursor;
 872
 873         Buffer::inset_iterator beg = b->inset_iterator_begin();
 874         Buffer::inset_iterator end = b->inset_iterator_end();
 875
 876         bool cursor_par_seen = false;
 877
 878         for (; beg != end; ++beg) {
 879                 if (beg.getPar() == cursor.par()) {
 880                         cursor_par_seen = true;
 881                 }
 882                 if (cursor_par_seen) {
 883                         if (beg.getPar() == cursor.par()
 884                             && beg.getPos() >= cursor.pos()) {
 885                                 break;
 886                         } else if (beg.getPar() != cursor.par()) {
 887                                 break;
 888                         }
 889                 }
 890
 891         }
 892         if (beg != end) {
 893                 // Now find the first inset that matches code.
 894                 for (; beg != end; ++beg) {
 895                         if (beg->lyxCode() == code) {
 896                                 return &(*beg);
 897                         }
 898                 }
 899         }
 900         return 0;
 901 #endif
 902 }
 903
 904
 905 void BufferView::Pimpl::MenuInsertLyXFile(string const & filen)
 906 {
 907         string filename = filen;
 908
 909         if (filename.empty()) {
 910                 // Launch a file browser
 911                 string initpath = lyxrc.document_path;
 912
 913                 if (available()) {
 914                         string const trypath = owner_->buffer()->filePath();
 915                         // If directory is writeable, use this as default.
 916                         if (IsDirWriteable(trypath))
 917                                 initpath = trypath;
 918                 }
 919
 920                 FileDialog fileDlg(_("Select LyX document to insert"),
 921                         LFUN_FILE_INSERT,
 922                         make_pair(string(_("Documents|#o#O")),
 923                                   string(lyxrc.document_path)),
 924                         make_pair(string(_("Examples|#E#e")),
 925                                   string(AddPath(system_lyxdir, "examples"))));
 926
 927                 FileDialog::Result result =
 928                         fileDlg.open(initpath,
 929                                        _("*.lyx| LyX Documents (*.lyx)"));
 930
 931                 if (result.first == FileDialog::Later)
 932                         return;
 933
 934                 filename = result.second;
 935
 936                 // check selected filename
 937                 if (filename.empty()) {
 938                         owner_->message(_("Canceled."));
 939                         return;
 940                 }
 941         }
 942
 943         // get absolute path of file and add ".lyx" to the filename if
 944         // necessary
 945         filename = FileSearch(string(), filename, "lyx");
 946
 947         string const disp_fn = MakeDisplayPath(filename);
 948         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 949         bool const res = bv_->insertLyXFile(filename);
 950         if (res)
 951                 owner_->message(bformat(_("Document %1$s inserted."), disp_fn));
 952         else
 953                 owner_->message(bformat(_("Could not insert document %1$s"), disp_fn));
 954 }
 955
 956
 957 void BufferView::Pimpl::trackChanges()
 958 {
 959         Buffer * buf(bv_->buffer());
 960         bool const tracking(buf->params.tracking_changes);
 961
 962         if (!tracking) {
 963                 ParIterator const end = buf->par_iterator_end();
 964                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 965                         it->trackChanges();
 966                 buf->params.tracking_changes = true;
 967
 968                 // we cannot allow undos beyond the freeze point
 969                 buf->undostack.clear();
 970         } else {
 971                 update(BufferView::SELECT);
 972                 bv_->text->setCursor(buf->paragraphs.begin(), 0);
 973 #warning changes FIXME
 974                 //moveCursorUpdate(false);
 975
 976                 bool found = lyxfind::findNextChange(bv_);
 977                 if (found) {
 978                         owner_->getDialogs().show("changes");
 979                         return;
 980                 }
 981
 982                 ParIterator const end = buf->par_iterator_end();
 983                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 984                         it->untrackChanges();
 985                 buf->params.tracking_changes = false;
 986         }
 987
 988         buf->redostack.clear();
 989 }
 990
 991
 992 // Doesn't go through lyxfunc, so we need to update the
 993 // layout choice etc. ourselves
 994 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & ev_in)
 995 {
 996         // e.g. Qt mouse press when no buffer
 997         if (!available())
 998                 return false;
 999
1000         screen().hideCursor();
1001
1002         // Make sure that the cached BufferView is correct.
1003         FuncRequest ev = ev_in;
1004         ev.setView(bv_);
1005
1006         bool const res = dispatch(ev);
1007
1008         // see workAreaKeyPress
1009         cursor_timeout.restart();
1010         screen().showCursor(*bv_);
1011
1012         // FIXME: we should skip these when selecting
1013         bv_->owner()->updateLayoutChoice();
1014         bv_->owner()->updateToolbar();
1015         bv_->fitCursor();
1016
1017         // slight hack: this is only called currently when
1018         // we clicked somewhere, so we force through the display
1019         // of the new status here.
1020         bv_->owner()->clearMessage();
1021
1022         return res;
1023 }
1024
1025
1026 bool BufferView::Pimpl::dispatch(FuncRequest const & ev_in)
1027 {
1028         // Make sure that the cached BufferView is correct.
1029         FuncRequest ev = ev_in;
1030         ev.setView(bv_);
1031
1032         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
1033                 << " action[" << ev.action << ']'
1034                 << " arg[" << ev.argument << ']'
1035                 << " x[" << ev.x << ']'
1036                 << " y[" << ev.y << ']'
1037                 << " button[" << ev.button() << ']'
1038                 << endl;
1039
1040         LyXTextClass const & tclass = buffer_->params.getLyXTextClass();
1041
1042         switch (ev.action) {
1043
1044         case LFUN_SCROLL_INSET:
1045                 // this is not handled here as this function is only active
1046                 // if we have a locking_inset and that one is (or contains)
1047                 // a tabular-inset
1048                 break;
1049
1050         case LFUN_FILE_INSERT:
1051                 MenuInsertLyXFile(ev.argument);
1052                 break;
1053
1054         case LFUN_FILE_INSERT_ASCII_PARA:
1055                 InsertAsciiFile(bv_, ev.argument, true);
1056                 break;
1057
1058         case LFUN_FILE_INSERT_ASCII:
1059                 InsertAsciiFile(bv_, ev.argument, false);
1060                 break;
1061
1062         case LFUN_LANGUAGE:
1063                 lang(bv_, ev.argument);
1064                 switchKeyMap();
1065                 owner_->view_state_changed();
1066                 break;
1067
1068         case LFUN_EMPH:
1069                 emph(bv_);
1070                 owner_->view_state_changed();
1071                 break;
1072
1073         case LFUN_BOLD:
1074                 bold(bv_);
1075                 owner_->view_state_changed();
1076                 break;
1077
1078         case LFUN_NOUN:
1079                 noun(bv_);
1080                 owner_->view_state_changed();
1081                 break;
1082
1083         case LFUN_CODE:
1084                 code(bv_);
1085                 owner_->view_state_changed();
1086                 break;
1087
1088         case LFUN_SANS:
1089                 sans(bv_);
1090                 owner_->view_state_changed();
1091                 break;
1092
1093         case LFUN_ROMAN:
1094                 roman(bv_);
1095                 owner_->view_state_changed();
1096                 break;
1097
1098         case LFUN_DEFAULT:
1099                 styleReset(bv_);
1100                 owner_->view_state_changed();
1101                 break;
1102
1103         case LFUN_UNDERLINE:
1104                 underline(bv_);
1105                 owner_->view_state_changed();
1106                 break;
1107
1108         case LFUN_FONT_SIZE:
1109                 fontSize(bv_, ev.argument);
1110                 owner_->view_state_changed();
1111                 break;
1112
1113         case LFUN_FONT_STATE:
1114                 owner_->getLyXFunc().setMessage(currentState(bv_));
1115                 break;
1116
1117         case LFUN_INSERT_LABEL: {
1118                 // Try and generate a valid label
1119                 string const contents = ev.argument.empty() ?
1120                         getPossibleLabel(*bv_) : ev.argument;
1121                 InsetCommandParams icp("label", contents);
1122                 string data = InsetCommandMailer::params2string("label", icp);
1123                 owner_->getDialogs().show("label", data, 0);
1124         }
1125         break;
1126
1127         case LFUN_BOOKMARK_SAVE:
1128                 savePosition(strToUnsignedInt(ev.argument));
1129                 break;
1130
1131         case LFUN_BOOKMARK_GOTO:
1132                 restorePosition(strToUnsignedInt(ev.argument));
1133                 break;
1134
1135         case LFUN_REF_GOTO: {
1136                 string label = ev.argument;
1137                 if (label.empty()) {
1138                         InsetRef * inset =
1139                                 static_cast<InsetRef*>(getInsetByCode(Inset::REF_CODE));
1140                         if (inset) {
1141                                 label = inset->getContents();
1142                                 savePosition(0);
1143                         }
1144                 }
1145
1146                 if (!label.empty())
1147                         bv_->gotoLabel(label);
1148         }
1149         break;
1150
1151         // --- accented characters ---------------------------
1152
1153         case LFUN_UMLAUT:
1154         case LFUN_CIRCUMFLEX:
1155         case LFUN_GRAVE:
1156         case LFUN_ACUTE:
1157         case LFUN_TILDE:
1158         case LFUN_CEDILLA:
1159         case LFUN_MACRON:
1160         case LFUN_DOT:
1161         case LFUN_UNDERDOT:
1162         case LFUN_UNDERBAR:
1163         case LFUN_CARON:
1164         case LFUN_SPECIAL_CARON:
1165         case LFUN_BREVE:
1166         case LFUN_TIE:
1167         case LFUN_HUNG_UMLAUT:
1168         case LFUN_CIRCLE:
1169         case LFUN_OGONEK:
1170                 if (ev.argument.empty()) {
1171                         // As always...
1172                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1173                 } else {
1174                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1175                         owner_->getIntl().getTransManager()
1176                                 .TranslateAndInsert(ev.argument[0], bv_->getLyXText());
1177                         update(bv_->getLyXText(), BufferView::SELECT);
1178                 }
1179                 break;
1180
1181         case LFUN_MATH_MACRO:
1182         case LFUN_MATH_DELIM:
1183         case LFUN_INSERT_MATRIX:
1184         case LFUN_INSERT_MATH:
1185         case LFUN_MATH_IMPORT_SELECTION: // Imports LaTeX from the X selection
1186         case LFUN_MATH_DISPLAY:          // Open or create a displayed math inset
1187         case LFUN_MATH_MODE:             // Open or create an inlined math inset
1188                 mathDispatch(ev);
1189                 break;
1190
1191         case LFUN_INSET_APPLY: {
1192                 string const name = ev.getArg(0);
1193
1194                 InsetBase * inset = owner_->getDialogs().getOpenInset(name);
1195                 if (inset) {
1196                         // This works both for 'original' and 'mathed' insets.
1197                         // Note that the localDispatch performs updateInset
1198                         // also.
1199                         FuncRequest fr(bv_, LFUN_INSET_MODIFY, ev.argument);
1200                         inset->localDispatch(fr);
1201                 } else {
1202                         FuncRequest fr(bv_, LFUN_INSET_INSERT, ev.argument);
1203                         dispatch(fr);
1204                 }
1205         }
1206         break;
1207
1208         case LFUN_INSET_INSERT: {
1209                 Inset * inset = createInset(ev);
1210                 if (inset && insertInset(inset)) {
1211                         updateInset(inset);
1212
1213                         string const name = ev.getArg(0);
1214                         if (name == "bibitem") {
1215                                 // We need to do a redraw because the maximum
1216                                 // InsetBibitem width could have changed
1217 #warning please check you mean repaint() not update(),
1218 #warning and whether the repaint() is needed at all
1219                                 bv_->repaint();
1220                                 bv_->fitCursor();
1221                         }
1222                 } else {
1223                         delete inset;
1224                 }
1225         }
1226         break;
1227
1228         case LFUN_FLOAT_LIST:
1229                 if (tclass.floats().typeExist(ev.argument)) {
1230                         Inset * inset = new InsetFloatList(ev.argument);
1231                         if (!insertInset(inset, tclass.defaultLayoutName()))
1232                                 delete inset;
1233                 } else {
1234                         lyxerr << "Non-existent float type: "
1235                                << ev.argument << endl;
1236                 }
1237                 break;
1238
1239         case LFUN_LAYOUT_PARAGRAPH: {
1240                 Paragraph const * par = &*bv_->getLyXText()->cursor.par();
1241                 if (!par)
1242                         break;
1243
1244                 string data;
1245                 params2string(*par, data);
1246
1247                 data = "show\n" + data;
1248                 bv_->owner()->getDialogs().show("paragraph", data);
1249                 break;
1250         }
1251
1252         case LFUN_PARAGRAPH_UPDATE: {
1253                 if (!bv_->owner()->getDialogs().visible("paragraph"))
1254                         break;
1255                 Paragraph const * par = &*bv_->getLyXText()->cursor.par();
1256                 if (!par)
1257                         break;
1258
1259                 string data;
1260                 params2string(*par, data);
1261
1262                 // Will the paragraph accept changes from the dialog?
1263                 Inset * const inset = par->inInset();
1264                 bool const accept =
1265                         !(inset && inset->forceDefaultParagraphs(inset));
1266
1267                 data = "update " + tostr(accept) + '\n' + data;
1268                 bv_->owner()->getDialogs().update("paragraph", data);
1269                 break;
1270         }
1271
1272         case LFUN_PARAGRAPH_APPLY:
1273                 setParagraphParams(*bv_, ev.argument);
1274                 break;
1275
1276         case LFUN_THESAURUS_ENTRY:
1277         {
1278                 string arg = ev.argument;
1279
1280                 if (arg.empty()) {
1281                         arg = bv_->getLyXText()->selectionAsString(buffer_,
1282                                                                    false);
1283
1284                         // FIXME
1285                         if (arg.size() > 100 || arg.empty()) {
1286                                 // Get word or selection
1287                                 bv_->getLyXText()->selectWordWhenUnderCursor(lyx::WHOLE_WORD);
1288                                 arg = bv_->getLyXText()->selectionAsString(buffer_, false);
1289                                 // FIXME: where is getLyXText()->unselect(bv_) ?
1290                         }
1291                 }
1292
1293                 bv_->owner()->getDialogs().show("thesaurus", arg);
1294         }
1295                 break;
1296
1297         case LFUN_TRACK_CHANGES:
1298                 trackChanges();
1299                 break;
1300
1301         case LFUN_MERGE_CHANGES:
1302                 owner_->getDialogs().show("changes");
1303                 break;
1304
1305         case LFUN_ACCEPT_ALL_CHANGES: {
1306                 update(BufferView::SELECT);
1307                 bv_->text->setCursor(bv_->buffer()->paragraphs.begin(), 0);
1308 #warning FIXME changes
1309                 //moveCursorUpdate(false);
1310
1311                 while (lyxfind::findNextChange(bv_)) {
1312                         bv_->getLyXText()->acceptChange();
1313                 }
1314                 update(BufferView::SELECT);
1315                 break;
1316         }
1317
1318         case LFUN_REJECT_ALL_CHANGES: {
1319                 update(BufferView::SELECT);
1320                 bv_->text->setCursor(bv_->buffer()->paragraphs.begin(), 0);
1321 #warning FIXME changes
1322                 //moveCursorUpdate(false);
1323
1324                 while (lyxfind::findNextChange(bv_)) {
1325                         bv_->getLyXText()->rejectChange();
1326                 }
1327                 update(BufferView::SELECT);
1328                 break;
1329         }
1330
1331         case LFUN_ACCEPT_CHANGE: {
1332                 bv_->getLyXText()->acceptChange();
1333                 update(BufferView::SELECT);
1334                 break;
1335         }
1336
1337         case LFUN_REJECT_CHANGE: {
1338                 bv_->getLyXText()->rejectChange();
1339                 update(BufferView::SELECT);
1340                 break;
1341         }
1342
1343         case LFUN_UNKNOWN_ACTION:
1344                 ev.errorMessage(N_("Unknown function!"));
1345                 break;
1346
1347         default:
1348                 return bv_->getLyXText()->dispatch(FuncRequest(ev, bv_));
1349         } // end of switch
1350
1351         return true;
1352 }
1353
1354
1355 bool BufferView::Pimpl::insertInset(Inset * inset, string const & lout)
1356 {
1357         // if we are in a locking inset we should try to insert the
1358         // inset there otherwise this is a illegal function now
1359         if (bv_->theLockingInset()) {
1360                 if (bv_->theLockingInset()->insetAllowed(inset))
1361                         return bv_->theLockingInset()->insertInset(bv_, inset);
1362                 return false;
1363         }
1364
1365         // not quite sure if we want this...
1366         setCursorParUndo(bv_);
1367         freezeUndo();
1368
1369         beforeChange(bv_->text);
1370         if (!lout.empty()) {
1371                 update(BufferView::SELECT);
1372                 bv_->text->breakParagraph(bv_->buffer()->paragraphs);
1373                 update(BufferView::SELECT);
1374
1375                 if (!bv_->text->cursor.par()->empty()) {
1376                         bv_->text->cursorLeft(bv_);
1377
1378                         bv_->text->breakParagraph(bv_->buffer()->paragraphs);
1379                         update(BufferView::SELECT);
1380                 }
1381
1382                 string lres = lout;
1383                 LyXTextClass const & tclass =
1384                         buffer_->params.getLyXTextClass();
1385                 bool hasLayout = tclass.hasLayout(lres);
1386                 string lay = tclass.defaultLayoutName();
1387
1388                 if (hasLayout != false) {
1389                         // layout found
1390                         lay = lres;
1391                 } else {
1392                         // layout not fount using default
1393                         lay = tclass.defaultLayoutName();
1394                 }
1395
1396                 bv_->text->setLayout(lay);
1397
1398                 bv_->text->setParagraph(0, 0,
1399                                    0, 0,
1400                                    VSpace(VSpace::NONE), VSpace(VSpace::NONE),
1401                                    Spacing(),
1402                                    LYX_ALIGN_LAYOUT,
1403                                    string(),
1404                                    0);
1405                 update(BufferView::SELECT);
1406         }
1407
1408         bv_->text->insertInset(inset);
1409         update(BufferView::SELECT);
1410
1411         unFreezeUndo();
1412         return true;
1413 }
1414
1415
1416 void BufferView::Pimpl::updateInset(Inset * inset)
1417 {
1418         if (!inset || !available())
1419                 return;
1420
1421         // first check for locking insets
1422         if (bv_->theLockingInset()) {
1423                 if (bv_->theLockingInset() == inset) {
1424                         if (bv_->text->updateInset(inset)) {
1425                                 update();
1426                                 updateScrollbar();
1427                                 return;
1428                         }
1429                 } else if (bv_->theLockingInset()->updateInsetInInset(bv_, inset)) {
1430                         if (bv_->text->updateInset(bv_->theLockingInset())) {
1431                                 update();
1432                                 updateScrollbar();
1433                                 return;
1434                         }
1435                 }
1436         }
1437
1438         // then check if the inset is a top_level inset (has no owner)
1439         // if yes do the update as always otherwise we have to update the
1440         // toplevel inset where this inset is inside
1441         Inset * tl_inset = inset;
1442         while (tl_inset->owner())
1443                 tl_inset = tl_inset->owner();
1444         if (tl_inset == inset) {
1445                 update(BufferView::UPDATE);
1446                 if (bv_->text->updateInset(inset)) {
1447                         update(BufferView::SELECT);
1448                         return;
1449                 }
1450         } else if (static_cast<UpdatableInset *>(tl_inset)
1451                            ->updateInsetInInset(bv_, inset))
1452         {
1453                 if (bv_->text->updateInset(tl_inset)) {
1454                         update();
1455                         updateScrollbar();
1456                 }
1457         }
1458 }