src/BufferView_pimpl.C

   1 /**
   2  * \file BufferView_pimpl.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Asger Alstrup
   7  * \author Alfredo Braustein
   8  * \author Lars Gullik Bjønnes
   9  * \author Jean-Marc Lasgouttes
  10  * \author Angus Leeming
  11  * \author John Levon
  12  * \author André Pönitz
  13  * \author Dekel Tsur
  14  * \author Jürgen Vigna
  15  *
  16  * Full author contact details are available in file CREDITS.
  17  */
  18
  19 #include <config.h>
  20
  21 #include "BufferView_pimpl.h"
  22 #include "bufferlist.h"
  23 #include "buffer.h"
  24 #include "buffer_funcs.h"
  25 #include "bufferview_funcs.h"
  26 #include "lfuns.h"
  27 #include "debug.h"
  28 #include "factory.h"
  29 #include "FloatList.h"
  30 #include "funcrequest.h"
  31 #include "gettext.h"
  32 #include "intl.h"
  33 #include "iterators.h"
  34 #include "Lsstream.h"
  35 #include "lyx_cb.h" // added for Dispatch functions
  36 #include "lyx_main.h"
  37 #include "lyxfind.h"
  38 #include "lyxfunc.h"
  39 #include "lyxtext.h"
  40 #include "lyxrc.h"
  41 #include "lastfiles.h"
  42 #include "paragraph.h"
  43 #include "paragraph_funcs.h"
  44 #include "ParagraphParameters.h"
  45 #include "TextCache.h"
  46 #include "undo_funcs.h"
  47
  48 #include "insets/insetfloatlist.h"
  49 #include "insets/insetgraphics.h"
  50 #include "insets/insetinclude.h"
  51 #include "insets/insetref.h"
  52 #include "insets/insettext.h"
  53
  54 #include "frontends/Alert.h"
  55 #include "frontends/Dialogs.h"
  56 #include "frontends/FileDialog.h"
  57 #include "frontends/LyXView.h"
  58 #include "frontends/LyXScreenFactory.h"
  59 #include "frontends/mouse_state.h"
  60 #include "frontends/screen.h"
  61 #include "frontends/WorkArea.h"
  62 #include "frontends/WorkAreaFactory.h"
  63
  64 #include "mathed/formulabase.h"
  65
  66 #include "graphics/Previews.h"
  67
  68 #include "support/LAssert.h"
  69 #include "support/tostr.h"
  70 #include "support/filetools.h"
  71 #include "support/path_defines.h"
  72
  73 #include <boost/bind.hpp>
  74 #include <boost/signals/connection.hpp>
  75
  76 #include <unistd.h>
  77 #include <sys/wait.h>
  78
  79
  80 using std::vector;
  81 using std::find_if;
  82 using std::find;
  83 using std::pair;
  84 using std::endl;
  85 using std::make_pair;
  86 using std::min;
  87
  88 using lyx::pos_type;
  89 using namespace lyx::support;
  90 using namespace bv_funcs;
  91
  92 extern BufferList bufferlist;
  93
  94
  95 namespace {
  96
  97 unsigned int const saved_positions_num = 20;
  98
  99 // All the below connection objects are needed because of a bug in some
 100 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
 101 // to these connections we avoid a segfault upon startup, and also at exit.
 102 // (Lgb)
 103
 104 boost::signals::connection dispatchcon;
 105 boost::signals::connection timecon;
 106 boost::signals::connection doccon;
 107 boost::signals::connection resizecon;
 108 boost::signals::connection kpresscon;
 109 boost::signals::connection selectioncon;
 110 boost::signals::connection lostcon;
 111
 112
 113 } // anon namespace
 114
 115
 116 BufferView::Pimpl::Pimpl(BufferView * bv, LyXView * owner,
 117              int xpos, int ypos, int width, int height)
 118         : bv_(bv), owner_(owner), buffer_(0), cursor_timeout(400),
 119           using_xterm_cursor(false)
 120 {
 121         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 122         screen_.reset(LyXScreenFactory::create(workarea()));
 123
 124         // Setup the signals
 125         doccon = workarea().scrollDocView
 126                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 127         resizecon = workarea().workAreaResize
 128                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 129         dispatchcon = workarea().dispatch
 130                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 131         kpresscon = workarea().workAreaKeyPress
 132                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 133         selectioncon = workarea().selectionRequested
 134                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 135         lostcon = workarea().selectionLost
 136                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 137
 138         timecon = cursor_timeout.timeout
 139                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 140         cursor_timeout.start();
 141         saved_positions.resize(saved_positions_num);
 142 }
 143
 144
 145 void BufferView::Pimpl::addError(ErrorItem const & ei)
 146 {
 147         errorlist_.push_back(ei);
 148 }
 149
 150
 151 void BufferView::Pimpl::showReadonly(bool)
 152 {
 153         owner_->updateWindowTitle();
 154         owner_->getDialogs().updateBufferDependent(false);
 155 }
 156
 157
 158 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 159 {
 160         if (errorConnection_.connected())
 161                 disconnectBuffer();
 162
 163         errorConnection_ = buf.error.connect(boost::bind(&BufferView::Pimpl::addError, this, _1));
 164         messageConnection_ = buf.message.connect(boost::bind(&LyXView::message, owner_, _1));
 165         busyConnection_ = buf.busy.connect(boost::bind(&LyXView::busy, owner_, _1));
 166         titleConnection_ = buf.updateTitles.connect(boost::bind(&LyXView::updateWindowTitle, owner_));
 167         timerConnection_ = buf.resetAutosaveTimers.connect(boost::bind(&LyXView::resetAutosaveTimer, owner_));
 168         readonlyConnection_ = buf.readonly.connect(boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 169         closingConnection_ = buf.closing.connect(boost::bind(&BufferView::Pimpl::buffer, this, (Buffer *)0));
 170 }
 171
 172
 173 void BufferView::Pimpl::disconnectBuffer()
 174 {
 175         errorConnection_.disconnect();
 176         messageConnection_.disconnect();
 177         busyConnection_.disconnect();
 178         titleConnection_.disconnect();
 179         timerConnection_.disconnect();
 180         readonlyConnection_.disconnect();
 181         closingConnection_.disconnect();
 182 }
 183
 184
 185 bool BufferView::Pimpl::newFile(string const & filename,
 186                                 string const & tname,
 187                                 bool isNamed)
 188 {
 189         Buffer * b = ::newFile(filename, tname, isNamed);
 190         buffer(b);
 191         return true;
 192 }
 193
 194
 195 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 196 {
 197         // get absolute path of file and add ".lyx" to the filename if
 198         // necessary
 199         string s = FileSearch(string(), filename, "lyx");
 200
 201         bool const found = !s.empty();
 202
 203         if (!found)
 204                 s = filename;
 205
 206         // file already open?
 207         if (bufferlist.exists(s)) {
 208                 string const file = MakeDisplayPath(s, 20);
 209                 string text = bformat(_("The document %1$s is already "
 210                                         "loaded.\n\nDo you want to revert "
 211                                         "to the saved version?"), file);
 212                 int const ret = Alert::prompt(_("Revert to saved document?"),
 213                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 214
 215                 if (ret != 0) {
 216                         buffer(bufferlist.getBuffer(s));
 217                         return true;
 218                 } else {
 219                         // FIXME: should be LFUN_REVERT
 220                         if (!bufferlist.close(bufferlist.getBuffer(s), false))
 221                                 return false;
 222                         // Fall through to new load. (Asger)
 223                 }
 224         }
 225
 226         Buffer * b;
 227
 228         if (found) {
 229                 b = bufferlist.newBuffer(s);
 230                 connectBuffer(*b);
 231                 if (!::loadLyXFile(b, s)) {
 232                         bufferlist.release(b);
 233                         return false;
 234                 }
 235         } else {
 236                 string text = bformat(_("The document %1$s does not yet "
 237                                         "exist.\n\nDo you want to create "
 238                                         "a new document?"), s);
 239                 int const ret = Alert::prompt(_("Create new document?"),
 240                          text, 0, 1, _("&Create"), _("Cancel"));
 241
 242                 if (ret == 0)
 243                         b = ::newFile(s, string(), true);
 244                 else
 245                         return false;
 246         }
 247
 248         buffer(b);
 249         bv_->showErrorList(_("Parse"));
 250
 251         if (tolastfiles)
 252                 lastfiles->newFile(b->fileName());
 253
 254         return true;
 255 }
 256
 257
 258 WorkArea & BufferView::Pimpl::workarea() const
 259 {
 260         return *workarea_.get();
 261 }
 262
 263
 264 LyXScreen & BufferView::Pimpl::screen() const
 265 {
 266         return *screen_.get();
 267 }
 268
 269
 270 Painter & BufferView::Pimpl::painter() const
 271 {
 272         return workarea().getPainter();
 273 }
 274
 275
 276 void BufferView::Pimpl::top_y(int y)
 277 {
 278         top_y_ = y;
 279 }
 280
 281
 282 int BufferView::Pimpl::top_y() const
 283 {
 284         return top_y_;
 285 }
 286
 287
 288 void BufferView::Pimpl::buffer(Buffer * b)
 289 {
 290         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 291                             << b << ')' << endl;
 292         if (buffer_) {
 293                 disconnectBuffer();
 294                 // Put the old text into the TextCache, but
 295                 // only if the buffer is still loaded.
 296                 // Also set the owner of the test to 0
 297                 //              bv_->text->owner(0);
 298                 textcache.add(buffer_, workarea().workWidth(), bv_->text);
 299                 if (lyxerr.debugging())
 300                         textcache.show(lyxerr, "BufferView::buffer");
 301
 302                 bv_->text = 0;
 303         }
 304
 305         // set current buffer
 306         buffer_ = b;
 307
 308         top_y_ = 0;
 309
 310         // if we're quitting lyx, don't bother updating stuff
 311         if (quitting)
 312                 return;
 313
 314         // if we are closing the buffer, use the first buffer as current
 315         if (!buffer_)
 316                 buffer_ = bufferlist.first();
 317
 318         if (buffer_) {
 319                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 320                 connectBuffer(*buffer_);
 321
 322                 // If we don't have a text object for this, we make one
 323                 if (bv_->text == 0)
 324                         resizeCurrentBuffer();
 325
 326                 // FIXME: needed when ?
 327                 top_y(screen().topCursorVisible(bv_->text));
 328
 329                 // Buffer-dependent dialogs should be updated or
 330                 // hidden. This should go here because some dialogs (eg ToC)
 331                 // require bv_->text.
 332                 owner_->getDialogs().updateBufferDependent(true);
 333         } else {
 334                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 335                 owner_->getDialogs().hideBufferDependent();
 336
 337                 // Also remove all remaining text's from the testcache.
 338                 // (there should not be any!) (if there is any it is a
 339                 // bug!)
 340                 if (lyxerr.debugging())
 341                         textcache.show(lyxerr, "buffer delete all");
 342                 textcache.clear();
 343         }
 344
 345         update();
 346         updateScrollbar();
 347         owner_->updateMenubar();
 348         owner_->updateToolbar();
 349         owner_->updateLayoutChoice();
 350         owner_->updateWindowTitle();
 351
 352         if (buffer_) {
 353                 // Don't forget to update the Layout
 354                 string const layoutname =
 355                         bv_->text->cursor.par()->layout()->name();
 356                 owner_->setLayout(layoutname);
 357         }
 358
 359         if (lyx::graphics::Previews::activated() && buffer_)
 360                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 361 }
 362
 363
 364 bool BufferView::Pimpl::fitCursor()
 365 {
 366         bool ret;
 367
 368         if (bv_->theLockingInset()) {
 369                 bv_->theLockingInset()->fitInsetCursor(bv_);
 370                 ret = true;
 371         } else {
 372                 ret = screen().fitCursor(bv_->text, bv_);
 373         }
 374
 375         //dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
 376
 377         // We need to always update, in case we did a
 378         // paste and we stayed anchored to a row, but
 379         // the actual height of the doc changed ...
 380         updateScrollbar();
 381         return ret;
 382 }
 383
 384
 385 void BufferView::Pimpl::redoCurrentBuffer()
 386 {
 387         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 388         if (buffer_ && bv_->text) {
 389                 resizeCurrentBuffer();
 390                 updateScrollbar();
 391                 owner_->updateLayoutChoice();
 392                 update();
 393         }
 394 }
 395
 396
 397 void BufferView::Pimpl::resizeCurrentBuffer()
 398 {
 399         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 400
 401         ParagraphList::iterator par;
 402         ParagraphList::iterator selstartpar;
 403         ParagraphList::iterator selendpar;
 404         UpdatableInset * the_locking_inset = 0;
 405
 406         pos_type pos = 0;
 407         pos_type selstartpos = 0;
 408         pos_type selendpos = 0;
 409         bool selection = false;
 410         bool mark_set  = false;
 411
 412         owner_->busy(true);
 413
 414         owner_->message(_("Formatting document..."));
 415
 416         if (bv_->text) {
 417                 par = bv_->text->cursor.par();
 418                 pos = bv_->text->cursor.pos();
 419                 selstartpar = bv_->text->selection.start.par();
 420                 selstartpos = bv_->text->selection.start.pos();
 421                 selendpar = bv_->text->selection.end.par();
 422                 selendpos = bv_->text->selection.end.pos();
 423                 selection = bv_->text->selection.set();
 424                 mark_set = bv_->text->selection.mark();
 425                 the_locking_inset = bv_->theLockingInset();
 426                 bv_->text->fullRebreak();
 427                 update();
 428         } else {
 429                 lyxerr << "text not available!" << endl;
 430                 // See if we have a text in TextCache that fits
 431                 // the new buffer_ with the correct width.
 432                 bv_->text = textcache.findFit(buffer_, workarea().workWidth());
 433                 if (bv_->text) {
 434                         lyxerr << "text in cache!" << endl;
 435                         if (lyxerr.debugging()) {
 436                                 lyxerr << "Found a LyXText that fits:" << endl;
 437                                 textcache.show(lyxerr, make_pair(buffer_, make_pair(workarea().workWidth(), bv_->text)));
 438                         }
 439                         // Set the owner of the newly found text
 440                         //      bv_->text->owner(bv_);
 441                         if (lyxerr.debugging())
 442                                 textcache.show(lyxerr, "resizeCurrentBuffer");
 443                 } else {
 444                         lyxerr << "no text in cache!" << endl;
 445                         bv_->text = new LyXText(bv_, 0, false, bv_->buffer()->paragraphs);
 446                         bv_->text->init(bv_);
 447                 }
 448
 449                 par = bv_->text->ownerParagraphs().end();
 450                 selstartpar = bv_->text->ownerParagraphs().end();
 451                 selendpar = bv_->text->ownerParagraphs().end();
 452         }
 453
 454 #warning does not help much
 455         bv_->text->redoParagraphs(bv_->text->ownerParagraphs().begin(),
 456                 bv_->text->ownerParagraphs().end());
 457
 458         if (par != bv_->text->ownerParagraphs().end()) {
 459                 bv_->text->selection.set(true);
 460                 // At this point just to avoid the Delete-Empty-Paragraph-
 461                 // Mechanism when setting the cursor.
 462                 bv_->text->selection.mark(mark_set);
 463                 if (selection) {
 464                         bv_->text->setCursor(selstartpar, selstartpos);
 465                         bv_->text->selection.cursor = bv_->text->cursor;
 466                         bv_->text->setCursor(selendpar, selendpos);
 467                         bv_->text->setSelection();
 468                         bv_->text->setCursor(par, pos);
 469                 } else {
 470                         bv_->text->setCursor(par, pos);
 471                         bv_->text->selection.cursor = bv_->text->cursor;
 472                         bv_->text->selection.set(false);
 473                 }
 474                 // remake the inset locking
 475                 bv_->theLockingInset(the_locking_inset);
 476         }
 477
 478         top_y(screen().topCursorVisible(bv_->text));
 479
 480         switchKeyMap();
 481         owner_->busy(false);
 482
 483         // reset the "Formatting..." message
 484         owner_->clearMessage();
 485
 486         updateScrollbar();
 487 }
 488
 489
 490 void BufferView::Pimpl::updateScrollbar()
 491 {
 492         if (!bv_->text) {
 493                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 494                 workarea().setScrollbarParams(0, 0, 0);
 495                 return;
 496         }
 497
 498         LyXText const & t = *bv_->text;
 499
 500         lyxerr[Debug::GUI] << "Updating scrollbar: h " << t.height << ", top_y() "
 501                 << top_y() << ", default height " << defaultRowHeight() << endl;
 502
 503         workarea().setScrollbarParams(t.height, top_y(), defaultRowHeight());
 504 }
 505
 506
 507 void BufferView::Pimpl::scrollDocView(int value)
 508 {
 509         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 510
 511         if (!buffer_)
 512                 return;
 513
 514         screen().hideCursor();
 515
 516         top_y(value);
 517         screen().redraw(*bv_);
 518
 519         if (!lyxrc.cursor_follows_scrollbar)
 520                 return;
 521
 522         int const height = defaultRowHeight();
 523         int const first = top_y() + height;
 524         int const last = top_y() + workarea().workHeight() - height;
 525
 526         LyXText * text = bv_->text;
 527         if (text->cursor.y() < first)
 528                 text->setCursorFromCoordinates(0, first);
 529         else if (text->cursor.y() > last)
 530                 text->setCursorFromCoordinates(0, last);
 531
 532         owner_->updateLayoutChoice();
 533 }
 534
 535
 536 void BufferView::Pimpl::scroll(int lines)
 537 {
 538         if (!buffer_) {
 539                 return;
 540         }
 541
 542         LyXText const * t = bv_->text;
 543         int const line_height = defaultRowHeight();
 544
 545         // The new absolute coordinate
 546         int new_top_y = top_y() + lines * line_height;
 547
 548         // Restrict to a valid value
 549         new_top_y = std::min(t->height - 4 * line_height, new_top_y);
 550         new_top_y = std::max(0, new_top_y);
 551
 552         scrollDocView(new_top_y);
 553
 554         // Update the scrollbar.
 555         workarea().setScrollbarParams(t->height, top_y(), defaultRowHeight());
 556 }
 557
 558
 559 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 560                                          key_modifier::state state)
 561 {
 562         bv_->owner()->getLyXFunc().processKeySym(key, state);
 563
 564         /* This is perhaps a bit of a hack. When we move
 565          * around, or type, it's nice to be able to see
 566          * the cursor immediately after the keypress. So
 567          * we reset the toggle timeout and force the visibility
 568          * of the cursor. Note we cannot do this inside
 569          * dispatch() itself, because that's called recursively.
 570          */
 571         if (available()) {
 572                 cursor_timeout.restart();
 573                 screen().showCursor(*bv_);
 574         }
 575 }
 576
 577
 578 void BufferView::Pimpl::selectionRequested()
 579 {
 580         static string sel;
 581
 582         if (!available())
 583                 return;
 584
 585         LyXText * text = bv_->getLyXText();
 586
 587         if (text->selection.set() &&
 588                 (!bv_->text->xsel_cache.set() ||
 589                  text->selection.start != bv_->text->xsel_cache.start ||
 590                  text->selection.end != bv_->text->xsel_cache.end))
 591         {
 592                 bv_->text->xsel_cache = text->selection;
 593                 sel = text->selectionAsString(*bv_->buffer(), false);
 594         } else if (!text->selection.set()) {
 595                 sel = string();
 596                 bv_->text->xsel_cache.set(false);
 597         }
 598         if (!sel.empty()) {
 599                 workarea().putClipboard(sel);
 600         }
 601 }
 602
 603
 604 void BufferView::Pimpl::selectionLost()
 605 {
 606         if (available()) {
 607                 screen().hideCursor();
 608                 bv_->getLyXText()->clearSelection();
 609                 bv_->text->xsel_cache.set(false);
 610         }
 611 }
 612
 613
 614 void BufferView::Pimpl::workAreaResize()
 615 {
 616         static int work_area_width;
 617         static int work_area_height;
 618
 619         bool const widthChange = workarea().workWidth() != work_area_width;
 620         bool const heightChange = workarea().workHeight() != work_area_height;
 621
 622         // update from work area
 623         work_area_width = workarea().workWidth();
 624         work_area_height = workarea().workHeight();
 625
 626         if (buffer_ != 0) {
 627                 if (widthChange) {
 628                         // The visible LyXView need a resize
 629                         resizeCurrentBuffer();
 630
 631                         // Remove all texts from the textcache
 632                         // This is not _really_ what we want to do. What
 633                         // we really want to do is to delete in textcache
 634                         // that does not have a BufferView with matching
 635                         // width, but as long as we have only one BufferView
 636                         // deleting all gives the same result.
 637                         if (lyxerr.debugging())
 638                                 textcache.show(lyxerr, "Expose delete all");
 639                         textcache.clear();
 640                 }
 641         }
 642
 643         if (widthChange || heightChange)
 644                 update();
 645
 646         // always make sure that the scrollbar is sane.
 647         updateScrollbar();
 648         owner_->updateLayoutChoice();
 649 }
 650
 651
 652 void BufferView::Pimpl::update()
 653 {
 654         lyxerr << "BufferView::update()" << endl;
 655         // fix cursor coordinate cache in case something went wrong
 656         if (bv_->getLyXText()) {
 657                 // check needed to survive LyX startup
 658                 bv_->getLyXText()->redoCursor();
 659                 fitCursor();
 660         }
 661         screen().redraw(*bv_);
 662 }
 663
 664
 665 // Callback for cursor timer
 666 void BufferView::Pimpl::cursorToggle()
 667 {
 668         if (!buffer_) {
 669                 cursor_timeout.restart();
 670                 return;
 671         }
 672
 673         screen().toggleCursor(*bv_);
 674
 675         cursor_timeout.restart();
 676 }
 677
 678
 679 bool BufferView::Pimpl::available() const
 680 {
 681         if (buffer_ && bv_->text)
 682                 return true;
 683         return false;
 684 }
 685
 686
 687 Change const BufferView::Pimpl::getCurrentChange()
 688 {
 689         if (!bv_->buffer()->params.tracking_changes)
 690                 return Change(Change::UNCHANGED);
 691
 692         LyXText * text = bv_->getLyXText();
 693
 694         if (!text->selection.set())
 695                 return Change(Change::UNCHANGED);
 696
 697         LyXCursor const & cur = text->selection.start;
 698         return cur.par()->lookupChangeFull(cur.pos());
 699 }
 700
 701
 702 void BufferView::Pimpl::beforeChange(LyXText * text)
 703 {
 704         text->clearSelection();
 705 }
 706
 707
 708 void BufferView::Pimpl::savePosition(unsigned int i)
 709 {
 710         if (i >= saved_positions_num)
 711                 return;
 712         saved_positions[i] = Position(buffer_->fileName(),
 713                                       bv_->text->cursor.par()->id(),
 714                                       bv_->text->cursor.pos());
 715         if (i > 0)
 716                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 717 }
 718
 719
 720 void BufferView::Pimpl::restorePosition(unsigned int i)
 721 {
 722         if (i >= saved_positions_num)
 723                 return;
 724
 725         string const fname = saved_positions[i].filename;
 726
 727         beforeChange(bv_->text);
 728
 729         if (fname != buffer_->fileName()) {
 730                 Buffer * b;
 731                 if (bufferlist.exists(fname))
 732                         b = bufferlist.getBuffer(fname);
 733                 else {
 734                         b = bufferlist.newBuffer(fname);
 735                         ::loadLyXFile(b, fname); // don't ask, just load it
 736                 }
 737                 if (b != 0)
 738                         buffer(b);
 739         }
 740
 741         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 742         if (par == buffer_->par_iterator_end())
 743                 return;
 744
 745         bv_->text->setCursor(par.pit(),
 746                              min(par->size(), saved_positions[i].par_pos));
 747
 748         update();
 749         if (i > 0)
 750                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 751 }
 752
 753
 754 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 755 {
 756         if (i >= saved_positions_num)
 757                 return false;
 758
 759         return !saved_positions[i].filename.empty();
 760 }
 761
 762
 763 void BufferView::Pimpl::switchKeyMap()
 764 {
 765         if (!lyxrc.rtl_support)
 766                 return;
 767
 768         LyXText * text = bv_->getLyXText();
 769         if (text->real_current_font.isRightToLeft()
 770             && !(bv_->theLockingInset()
 771                  && bv_->theLockingInset()->lyxCode() == InsetOld::ERT_CODE))
 772         {
 773                 if (owner_->getIntl().keymap == Intl::PRIMARY)
 774                         owner_->getIntl().KeyMapSec();
 775         } else {
 776                 if (owner_->getIntl().keymap == Intl::SECONDARY)
 777                         owner_->getIntl().KeyMapPrim();
 778         }
 779 }
 780
 781
 782 void BufferView::Pimpl::insetUnlock()
 783 {
 784         if (bv_->theLockingInset()) {
 785                 bv_->theLockingInset()->insetUnlock(bv_);
 786                 bv_->theLockingInset(0);
 787                 finishUndo();
 788         }
 789 }
 790
 791
 792 void BufferView::Pimpl::center()
 793 {
 794         LyXText * text = bv_->text;
 795
 796         beforeChange(text);
 797         int const half_height = workarea().workHeight() / 2;
 798         int new_y = 0;
 799
 800         if (text->cursor.y() > half_height)
 801                 new_y = text->cursor.y() - half_height;
 802
 803         // FIXME: look at this comment again ...
 804
 805         // FIXME: can we do this w/o calling screen directly ?
 806         // This updates top_y() but means the fitCursor() call
 807         // from the update(FITCUR) doesn't realise that we might
 808         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 809         // the scrollbar to be updated as it should, so we have
 810         // to do it manually. Any operation that does a center()
 811         // and also might have moved top_y() must make sure to call
 812         // updateScrollbar() currently. Never mind that this is a
 813         // pretty obfuscated way of updating t->top_y()
 814         top_y(new_y);
 815         //screen().draw();
 816         update();
 817 }
 818
 819
 820 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 821 {
 822         workarea().putClipboard(stuff);
 823 }
 824
 825
 826 /*
 827  * Dispatch functions for actions which can be valid for BufferView->text
 828  * and/or InsetText->text!!!
 829  */
 830
 831
 832 InsetOld * BufferView::Pimpl::getInsetByCode(InsetOld::Code code)
 833 {
 834 #if 0
 835         LyXCursor cursor = bv_->getLyXText()->cursor;
 836         Buffer::inset_iterator it =
 837                 find_if(Buffer::inset_iterator(
 838                         cursor.par(), cursor.pos()),
 839                         buffer_->inset_iterator_end(),
 840                         lyx::compare_memfun(&Inset::lyxCode, code));
 841         return it != buffer_->inset_iterator_end() ? (*it) : 0;
 842 #else
 843         // Ok, this is a little bit too brute force but it
 844         // should work for now. Better infrastructure is coming. (Lgb)
 845
 846         Buffer * b = bv_->buffer();
 847         LyXCursor cursor = bv_->getLyXText()->cursor;
 848
 849         Buffer::inset_iterator beg = b->inset_iterator_begin();
 850         Buffer::inset_iterator end = b->inset_iterator_end();
 851
 852         bool cursor_par_seen = false;
 853
 854         for (; beg != end; ++beg) {
 855                 if (beg.getPar() == cursor.par()) {
 856                         cursor_par_seen = true;
 857                 }
 858                 if (cursor_par_seen) {
 859                         if (beg.getPar() == cursor.par()
 860                             && beg.getPos() >= cursor.pos()) {
 861                                 break;
 862                         } else if (beg.getPar() != cursor.par()) {
 863                                 break;
 864                         }
 865                 }
 866
 867         }
 868         if (beg != end) {
 869                 // Now find the first inset that matches code.
 870                 for (; beg != end; ++beg) {
 871                         if (beg->lyxCode() == code) {
 872                                 return &(*beg);
 873                         }
 874                 }
 875         }
 876         return 0;
 877 #endif
 878 }
 879
 880
 881 void BufferView::Pimpl::MenuInsertLyXFile(string const & filen)
 882 {
 883         string filename = filen;
 884
 885         if (filename.empty()) {
 886                 // Launch a file browser
 887                 string initpath = lyxrc.document_path;
 888
 889                 if (available()) {
 890                         string const trypath = owner_->buffer()->filePath();
 891                         // If directory is writeable, use this as default.
 892                         if (IsDirWriteable(trypath))
 893                                 initpath = trypath;
 894                 }
 895
 896                 FileDialog fileDlg(_("Select LyX document to insert"),
 897                         LFUN_FILE_INSERT,
 898                         make_pair(string(_("Documents|#o#O")),
 899                                   string(lyxrc.document_path)),
 900                         make_pair(string(_("Examples|#E#e")),
 901                                   string(AddPath(system_lyxdir(), "examples"))));
 902
 903                 FileDialog::Result result =
 904                         fileDlg.open(initpath,
 905                                        _("*.lyx| LyX Documents (*.lyx)"));
 906
 907                 if (result.first == FileDialog::Later)
 908                         return;
 909
 910                 filename = result.second;
 911
 912                 // check selected filename
 913                 if (filename.empty()) {
 914                         owner_->message(_("Canceled."));
 915                         return;
 916                 }
 917         }
 918
 919         // get absolute path of file and add ".lyx" to the filename if
 920         // necessary
 921         filename = FileSearch(string(), filename, "lyx");
 922
 923         string const disp_fn = MakeDisplayPath(filename);
 924         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 925         if (bv_->insertLyXFile(filename))
 926                 owner_->message(bformat(_("Document %1$s inserted."),
 927                                         disp_fn));
 928         else
 929                 owner_->message(bformat(_("Could not insert document %1$s"),
 930                                         disp_fn));
 931 }
 932
 933
 934 void BufferView::Pimpl::trackChanges()
 935 {
 936         Buffer * buf(bv_->buffer());
 937         bool const tracking(buf->params.tracking_changes);
 938
 939         if (!tracking) {
 940                 ParIterator const end = buf->par_iterator_end();
 941                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 942                         it->trackChanges();
 943                 buf->params.tracking_changes = true;
 944
 945                 // we cannot allow undos beyond the freeze point
 946                 buf->undostack.clear();
 947         } else {
 948                 update();
 949                 bv_->text->setCursor(buf->paragraphs.begin(), 0);
 950 #warning changes FIXME
 951                 //moveCursorUpdate(false);
 952
 953                 bool found = lyx::find::findNextChange(bv_);
 954                 if (found) {
 955                         owner_->getDialogs().show("changes");
 956                         return;
 957                 }
 958
 959                 ParIterator const end = buf->par_iterator_end();
 960                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 961                         it->untrackChanges();
 962                 buf->params.tracking_changes = false;
 963         }
 964
 965         buf->redostack.clear();
 966 }
 967
 968
 969 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & ev)
 970 {
 971         switch (ev.action) {
 972         case LFUN_MOUSE_PRESS:
 973         case LFUN_MOUSE_MOTION:
 974         case LFUN_MOUSE_RELEASE:
 975         case LFUN_MOUSE_DOUBLE:
 976         case LFUN_MOUSE_TRIPLE:
 977         {
 978                 // We pass those directly to the Bufferview, since
 979                 // otherwise selection handling breaks down
 980
 981                 // Doesn't go through lyxfunc, so we need to update
 982                 // the layout choice etc. ourselves
 983
 984                 // e.g. Qt mouse press when no buffer
 985                 if (!available())
 986                         return false;
 987
 988                 screen().hideCursor();
 989
 990                 bool const res = dispatch(ev);
 991
 992                 // see workAreaKeyPress
 993                 cursor_timeout.restart();
 994                 screen().showCursor(*bv_);
 995
 996                 // FIXME: we should skip these when selecting
 997                 owner_->updateLayoutChoice();
 998                 owner_->updateToolbar();
 999                 fitCursor();
1000
1001                 // slight hack: this is only called currently when we
1002                 // clicked somewhere, so we force through the display
1003                 // of the new status here.
1004                 owner_->clearMessage();
1005
1006                 return res;
1007         }
1008         default:
1009                 owner_->dispatch(ev);
1010                 return true;
1011         }
1012 }
1013
1014
1015 bool BufferView::Pimpl::dispatch(FuncRequest const & ev_in)
1016 {
1017         // Make sure that the cached BufferView is correct.
1018         FuncRequest ev = ev_in;
1019         ev.setView(bv_);
1020
1021         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
1022                 << " action[" << ev.action << ']'
1023                 << " arg[" << ev.argument << ']'
1024                 << " x[" << ev.x << ']'
1025                 << " y[" << ev.y << ']'
1026                 << " button[" << ev.button() << ']'
1027                 << endl;
1028
1029         LyXTextClass const & tclass = buffer_->params.getLyXTextClass();
1030
1031         switch (ev.action) {
1032
1033         case LFUN_SCROLL_INSET:
1034                 // this is not handled here as this function is only active
1035                 // if we have a locking_inset and that one is (or contains)
1036                 // a tabular-inset
1037                 break;
1038
1039         case LFUN_FILE_INSERT:
1040                 MenuInsertLyXFile(ev.argument);
1041                 break;
1042
1043         case LFUN_FILE_INSERT_ASCII_PARA:
1044                 InsertAsciiFile(bv_, ev.argument, true);
1045                 break;
1046
1047         case LFUN_FILE_INSERT_ASCII:
1048                 InsertAsciiFile(bv_, ev.argument, false);
1049                 break;
1050
1051         case LFUN_LANGUAGE:
1052                 lang(bv_, ev.argument);
1053                 switchKeyMap();
1054                 owner_->view_state_changed();
1055                 break;
1056
1057         case LFUN_EMPH:
1058                 emph(bv_);
1059                 owner_->view_state_changed();
1060                 break;
1061
1062         case LFUN_BOLD:
1063                 bold(bv_);
1064                 owner_->view_state_changed();
1065                 break;
1066
1067         case LFUN_NOUN:
1068                 noun(bv_);
1069                 owner_->view_state_changed();
1070                 break;
1071
1072         case LFUN_CODE:
1073                 code(bv_);
1074                 owner_->view_state_changed();
1075                 break;
1076
1077         case LFUN_SANS:
1078                 sans(bv_);
1079                 owner_->view_state_changed();
1080                 break;
1081
1082         case LFUN_ROMAN:
1083                 roman(bv_);
1084                 owner_->view_state_changed();
1085                 break;
1086
1087         case LFUN_DEFAULT:
1088                 styleReset(bv_);
1089                 owner_->view_state_changed();
1090                 break;
1091
1092         case LFUN_UNDERLINE:
1093                 underline(bv_);
1094                 owner_->view_state_changed();
1095                 break;
1096
1097         case LFUN_FONT_SIZE:
1098                 fontSize(bv_, ev.argument);
1099                 owner_->view_state_changed();
1100                 break;
1101
1102         case LFUN_FONT_STATE:
1103                 owner_->getLyXFunc().setMessage(currentState(bv_));
1104                 break;
1105
1106         case LFUN_INSERT_LABEL: {
1107                 // Try and generate a valid label
1108                 string const contents = ev.argument.empty() ?
1109                         getPossibleLabel(*bv_) : ev.argument;
1110                 InsetCommandParams icp("label", contents);
1111                 string data = InsetCommandMailer::params2string("label", icp);
1112                 owner_->getDialogs().show("label", data, 0);
1113         }
1114         break;
1115
1116         case LFUN_BOOKMARK_SAVE:
1117                 savePosition(strToUnsignedInt(ev.argument));
1118                 break;
1119
1120         case LFUN_BOOKMARK_GOTO:
1121                 restorePosition(strToUnsignedInt(ev.argument));
1122                 break;
1123
1124         case LFUN_REF_GOTO: {
1125                 string label = ev.argument;
1126                 if (label.empty()) {
1127                         InsetRef * inset =
1128                                 static_cast<InsetRef*>(getInsetByCode(InsetOld::REF_CODE));
1129                         if (inset) {
1130                                 label = inset->getContents();
1131                                 savePosition(0);
1132                         }
1133                 }
1134
1135                 if (!label.empty())
1136                         bv_->gotoLabel(label);
1137         }
1138         break;
1139
1140         // --- accented characters ---------------------------
1141
1142         case LFUN_UMLAUT:
1143         case LFUN_CIRCUMFLEX:
1144         case LFUN_GRAVE:
1145         case LFUN_ACUTE:
1146         case LFUN_TILDE:
1147         case LFUN_CEDILLA:
1148         case LFUN_MACRON:
1149         case LFUN_DOT:
1150         case LFUN_UNDERDOT:
1151         case LFUN_UNDERBAR:
1152         case LFUN_CARON:
1153         case LFUN_SPECIAL_CARON:
1154         case LFUN_BREVE:
1155         case LFUN_TIE:
1156         case LFUN_HUNG_UMLAUT:
1157         case LFUN_CIRCLE:
1158         case LFUN_OGONEK:
1159                 if (ev.argument.empty()) {
1160                         // As always...
1161                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1162                 } else {
1163                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1164                         owner_->getIntl().getTransManager()
1165                                 .TranslateAndInsert(ev.argument[0], bv_->getLyXText());
1166                         update();
1167                 }
1168                 break;
1169
1170         case LFUN_MATH_MACRO:
1171         case LFUN_MATH_DELIM:
1172         case LFUN_INSERT_MATRIX:
1173         case LFUN_INSERT_MATH:
1174         case LFUN_MATH_IMPORT_SELECTION: // Imports LaTeX from the X selection
1175         case LFUN_MATH_DISPLAY:          // Open or create a displayed math inset
1176         case LFUN_MATH_MODE:             // Open or create an inlined math inset
1177                 mathDispatch(ev);
1178                 break;
1179
1180         case LFUN_INSET_APPLY: {
1181                 string const name = ev.getArg(0);
1182
1183                 InsetBase * inset = owner_->getDialogs().getOpenInset(name);
1184                 if (inset) {
1185                         // This works both for 'original' and 'mathed' insets.
1186                         // Note that the localDispatch performs updateInset
1187                         // also.
1188                         FuncRequest fr(bv_, LFUN_INSET_MODIFY, ev.argument);
1189                         inset->localDispatch(fr);
1190                 } else {
1191                         FuncRequest fr(bv_, LFUN_INSET_INSERT, ev.argument);
1192                         dispatch(fr);
1193                 }
1194         }
1195         break;
1196
1197         case LFUN_INSET_INSERT: {
1198                 InsetOld * inset = createInset(ev);
1199                 if (inset && insertInset(inset)) {
1200                         updateInset(inset);
1201
1202                         string const name = ev.getArg(0);
1203                         if (name == "bibitem") {
1204                                 // We need to do a redraw because the maximum
1205                                 // InsetBibitem width could have changed
1206 #warning check whether the update() is needed at all
1207                                 bv_->update();
1208                         }
1209                 } else {
1210                         delete inset;
1211                 }
1212         }
1213         break;
1214
1215         case LFUN_FLOAT_LIST:
1216                 if (tclass.floats().typeExist(ev.argument)) {
1217                         InsetOld * inset = new InsetFloatList(ev.argument);
1218                         if (!insertInset(inset, tclass.defaultLayoutName()))
1219                                 delete inset;
1220                 } else {
1221                         lyxerr << "Non-existent float type: "
1222                                << ev.argument << endl;
1223                 }
1224                 break;
1225
1226         case LFUN_LAYOUT_PARAGRAPH: {
1227                 string data;
1228                 params2string(*bv_->getLyXText()->cursor.par(), data);
1229
1230                 data = "show\n" + data;
1231                 bv_->owner()->getDialogs().show("paragraph", data);
1232                 break;
1233         }
1234
1235         case LFUN_PARAGRAPH_UPDATE: {
1236                 if (!bv_->owner()->getDialogs().visible("paragraph"))
1237                         break;
1238                 Paragraph const & par = *bv_->getLyXText()->cursor.par();
1239
1240                 string data;
1241                 params2string(par, data);
1242
1243                 // Will the paragraph accept changes from the dialog?
1244                 InsetOld * const inset = par.inInset();
1245                 bool const accept =
1246                         !(inset && inset->forceDefaultParagraphs(inset));
1247
1248                 data = "update " + tostr(accept) + '\n' + data;
1249                 bv_->owner()->getDialogs().update("paragraph", data);
1250                 break;
1251         }
1252
1253         case LFUN_PARAGRAPH_APPLY:
1254                 setParagraphParams(*bv_, ev.argument);
1255                 break;
1256
1257         case LFUN_THESAURUS_ENTRY:
1258         {
1259                 string arg = ev.argument;
1260
1261                 if (arg.empty()) {
1262                         arg = bv_->getLyXText()->selectionAsString(*buffer_,
1263                                                                    false);
1264
1265                         // FIXME
1266                         if (arg.size() > 100 || arg.empty()) {
1267                                 // Get word or selection
1268                                 bv_->getLyXText()->selectWordWhenUnderCursor(lyx::WHOLE_WORD);
1269                                 arg = bv_->getLyXText()->selectionAsString(*buffer_, false);
1270                                 // FIXME: where is getLyXText()->unselect(bv_) ?
1271                         }
1272                 }
1273
1274                 bv_->owner()->getDialogs().show("thesaurus", arg);
1275         }
1276                 break;
1277
1278         case LFUN_TRACK_CHANGES:
1279                 trackChanges();
1280                 break;
1281
1282         case LFUN_MERGE_CHANGES:
1283                 owner_->getDialogs().show("changes");
1284                 break;
1285
1286         case LFUN_ACCEPT_ALL_CHANGES: {
1287                 bv_->text->setCursor(bv_->buffer()->paragraphs.begin(), 0);
1288 #warning FIXME changes
1289                 //moveCursorUpdate(false);
1290
1291                 while (lyx::find::findNextChange(bv_))
1292                         bv_->getLyXText()->acceptChange();
1293
1294                 update();
1295                 break;
1296         }
1297
1298         case LFUN_REJECT_ALL_CHANGES: {
1299                 bv_->text->setCursor(bv_->buffer()->paragraphs.begin(), 0);
1300 #warning FIXME changes
1301                 //moveCursorUpdate(false);
1302
1303                 while (lyx::find::findNextChange(bv_))
1304                         bv_->getLyXText()->rejectChange();
1305
1306                 update();
1307                 break;
1308         }
1309
1310         case LFUN_ACCEPT_CHANGE: {
1311                 bv_->getLyXText()->acceptChange();
1312                 update();
1313                 break;
1314         }
1315
1316         case LFUN_REJECT_CHANGE: {
1317                 bv_->getLyXText()->rejectChange();
1318                 update();
1319                 break;
1320         }
1321
1322         case LFUN_UNKNOWN_ACTION:
1323                 ev.errorMessage(N_("Unknown function!"));
1324                 break;
1325
1326         default:
1327                 return bv_->getLyXText()->dispatch(FuncRequest(ev, bv_));
1328         } // end of switch
1329
1330         return true;
1331 }
1332
1333
1334 bool BufferView::Pimpl::insertInset(InsetOld * inset, string const & lout)
1335 {
1336         // if we are in a locking inset we should try to insert the
1337         // inset there otherwise this is a illegal function now
1338         if (bv_->theLockingInset()) {
1339                 if (bv_->theLockingInset()->insetAllowed(inset))
1340                         return bv_->theLockingInset()->insertInset(bv_, inset);
1341                 return false;
1342         }
1343
1344         // not quite sure if we want this...
1345         recordUndo(bv_, Undo::ATOMIC);
1346         freezeUndo();
1347
1348         beforeChange(bv_->text);
1349         if (!lout.empty()) {
1350                 bv_->text->breakParagraph(bv_->buffer()->paragraphs);
1351
1352                 if (!bv_->text->cursor.par()->empty()) {
1353                         bv_->text->cursorLeft(bv_);
1354                         bv_->text->breakParagraph(bv_->buffer()->paragraphs);
1355                 }
1356
1357                 string lres = lout;
1358                 LyXTextClass const & tclass = buffer_->params.getLyXTextClass();
1359                 bool hasLayout = tclass.hasLayout(lres);
1360                 string lay = tclass.defaultLayoutName();
1361
1362                 if (hasLayout != false) {
1363                         // layout found
1364                         lay = lres;
1365                 } else {
1366                         // layout not fount using default
1367                         lay = tclass.defaultLayoutName();
1368                 }
1369
1370                 bv_->text->setLayout(lay);
1371
1372                 bv_->text->setParagraph(0, 0,
1373                                    0, 0,
1374                                    VSpace(VSpace::NONE), VSpace(VSpace::NONE),
1375                                    Spacing(),
1376                                    LYX_ALIGN_LAYOUT,
1377                                    string(),
1378                                    0);
1379         }
1380
1381         bv_->text->insertInset(inset);
1382         update();
1383
1384         unFreezeUndo();
1385         return true;
1386 }
1387
1388
1389 void BufferView::Pimpl::updateInset(InsetOld const * inset)
1390 {
1391         if (!available())
1392                 return;
1393
1394         bv_->text->redoParagraph(outerPar(*bv_->buffer(), inset));
1395
1396         // this should not be needed, but it is...
1397         // bv_->text->redoParagraph(bv_->text->cursor.par());
1398         // bv_->text->fullRebreak();
1399
1400         update();
1401         updateScrollbar();
1402 }