src/BufferView_pimpl.C

   1 /**
   2  * \file BufferView_pimpl.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Asger Alstrup
   7  * \author Alfredo Braustein
   8  * \author Lars Gullik Bjønnes
   9  * \author Jean-Marc Lasgouttes
  10  * \author Angus Leeming
  11  * \author John Levon
  12  * \author André Pönitz
  13  * \author Dekel Tsur
  14  * \author Jürgen Vigna
  15  *
  16  * Full author contact details are available in file CREDITS.
  17  */
  18
  19 #include <config.h>
  20
  21 #include "BufferView_pimpl.h"
  22 #include "buffer.h"
  23 #include "buffer_funcs.h"
  24 #include "bufferlist.h"
  25 #include "bufferparams.h"
  26 #include "cursor.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 "lyx_cb.h" // added for Dispatch functions
  35 #include "lyx_main.h"
  36 #include "lyxfind.h"
  37 #include "lyxfunc.h"
  38 #include "lyxtext.h"
  39 #include "lyxrc.h"
  40 #include "lastfiles.h"
  41 #include "paragraph.h"
  42 #include "paragraph_funcs.h"
  43 #include "ParagraphParameters.h"
  44 #include "TextCache.h"
  45 #include "undo_funcs.h"
  46 #include "vspace.h"
  47
  48 #include "insets/insetfloatlist.h"
  49 #include "insets/insetref.h"
  50
  51 #include "frontends/Alert.h"
  52 #include "frontends/Dialogs.h"
  53 #include "frontends/FileDialog.h"
  54 #include "frontends/LyXView.h"
  55 #include "frontends/LyXScreenFactory.h"
  56 #include "frontends/screen.h"
  57 #include "frontends/WorkArea.h"
  58 #include "frontends/WorkAreaFactory.h"
  59
  60 #include "graphics/Previews.h"
  61
  62 #include "mathed/formulabase.h"
  63
  64 #include "support/filetools.h"
  65 #include "support/path_defines.h"
  66 #include "support/tostr.h"
  67
  68 #include <boost/bind.hpp>
  69
  70 using bv_funcs::bold;
  71 using bv_funcs::code;
  72 using bv_funcs::currentState;
  73 using bv_funcs::emph;
  74 using bv_funcs::fontSize;
  75 using bv_funcs::lang;
  76 using bv_funcs::noun;
  77 using bv_funcs::roman;
  78 using bv_funcs::sans;
  79 using bv_funcs::styleReset;
  80 using bv_funcs::underline;
  81
  82 using lyx::pos_type;
  83
  84 using lyx::support::AddPath;
  85 using lyx::support::bformat;
  86 using lyx::support::FileSearch;
  87 using lyx::support::IsDirWriteable;
  88 using lyx::support::MakeDisplayPath;
  89 using lyx::support::strToUnsignedInt;
  90 using lyx::support::system_lyxdir;
  91
  92 using std::endl;
  93 using std::make_pair;
  94 using std::min;
  95
  96
  97 extern BufferList bufferlist;
  98
  99
 100 namespace {
 101
 102 unsigned int const saved_positions_num = 20;
 103
 104 // All the below connection objects are needed because of a bug in some
 105 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
 106 // to these connections we avoid a segfault upon startup, and also at exit.
 107 // (Lgb)
 108
 109 boost::signals::connection dispatchcon;
 110 boost::signals::connection timecon;
 111 boost::signals::connection doccon;
 112 boost::signals::connection resizecon;
 113 boost::signals::connection kpresscon;
 114 boost::signals::connection selectioncon;
 115 boost::signals::connection lostcon;
 116
 117
 118 } // anon namespace
 119
 120
 121 BufferView::Pimpl::Pimpl(BufferView * bv, LyXView * owner,
 122              int xpos, int ypos, int width, int height)
 123         : bv_(bv), owner_(owner), buffer_(0), cursor_timeout(400),
 124           using_xterm_cursor(false)
 125 {
 126         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 127         screen_.reset(LyXScreenFactory::create(workarea()));
 128
 129         // Setup the signals
 130         doccon = workarea().scrollDocView
 131                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 132         resizecon = workarea().workAreaResize
 133                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 134         dispatchcon = workarea().dispatch
 135                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 136         kpresscon = workarea().workAreaKeyPress
 137                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 138         selectioncon = workarea().selectionRequested
 139                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 140         lostcon = workarea().selectionLost
 141                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 142
 143         timecon = cursor_timeout.timeout
 144                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 145         cursor_timeout.start();
 146         saved_positions.resize(saved_positions_num);
 147 }
 148
 149
 150 void BufferView::Pimpl::addError(ErrorItem const & ei)
 151 {
 152         errorlist_.push_back(ei);
 153 }
 154
 155
 156 void BufferView::Pimpl::showReadonly(bool)
 157 {
 158         owner_->updateWindowTitle();
 159         owner_->getDialogs().updateBufferDependent(false);
 160 }
 161
 162
 163 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 164 {
 165         if (errorConnection_.connected())
 166                 disconnectBuffer();
 167
 168         errorConnection_ = buf.error.connect(boost::bind(&BufferView::Pimpl::addError, this, _1));
 169         messageConnection_ = buf.message.connect(boost::bind(&LyXView::message, owner_, _1));
 170         busyConnection_ = buf.busy.connect(boost::bind(&LyXView::busy, owner_, _1));
 171         titleConnection_ = buf.updateTitles.connect(boost::bind(&LyXView::updateWindowTitle, owner_));
 172         timerConnection_ = buf.resetAutosaveTimers.connect(boost::bind(&LyXView::resetAutosaveTimer, owner_));
 173         readonlyConnection_ = buf.readonly.connect(boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 174         closingConnection_ = buf.closing.connect(boost::bind(&BufferView::Pimpl::buffer, this, (Buffer *)0));
 175 }
 176
 177
 178 void BufferView::Pimpl::disconnectBuffer()
 179 {
 180         errorConnection_.disconnect();
 181         messageConnection_.disconnect();
 182         busyConnection_.disconnect();
 183         titleConnection_.disconnect();
 184         timerConnection_.disconnect();
 185         readonlyConnection_.disconnect();
 186         closingConnection_.disconnect();
 187 }
 188
 189
 190 bool BufferView::Pimpl::newFile(string const & filename,
 191                                 string const & tname,
 192                                 bool isNamed)
 193 {
 194         Buffer * b = ::newFile(filename, tname, isNamed);
 195         buffer(b);
 196         return true;
 197 }
 198
 199
 200 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 201 {
 202         // get absolute path of file and add ".lyx" to the filename if
 203         // necessary
 204         string s = FileSearch(string(), filename, "lyx");
 205
 206         bool const found = !s.empty();
 207
 208         if (!found)
 209                 s = filename;
 210
 211         // file already open?
 212         if (bufferlist.exists(s)) {
 213                 string const file = MakeDisplayPath(s, 20);
 214                 string text = bformat(_("The document %1$s is already "
 215                                         "loaded.\n\nDo you want to revert "
 216                                         "to the saved version?"), file);
 217                 int const ret = Alert::prompt(_("Revert to saved document?"),
 218                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 219
 220                 if (ret != 0) {
 221                         buffer(bufferlist.getBuffer(s));
 222                         return true;
 223                 } else {
 224                         // FIXME: should be LFUN_REVERT
 225                         if (!bufferlist.close(bufferlist.getBuffer(s), false))
 226                                 return false;
 227                         // Fall through to new load. (Asger)
 228                 }
 229         }
 230
 231         Buffer * b;
 232
 233         if (found) {
 234                 b = bufferlist.newBuffer(s);
 235                 connectBuffer(*b);
 236                 if (!::loadLyXFile(b, s)) {
 237                         bufferlist.release(b);
 238                         return false;
 239                 }
 240         } else {
 241                 string text = bformat(_("The document %1$s does not yet "
 242                                         "exist.\n\nDo you want to create "
 243                                         "a new document?"), s);
 244                 int const ret = Alert::prompt(_("Create new document?"),
 245                          text, 0, 1, _("&Create"), _("Cancel"));
 246
 247                 if (ret == 0)
 248                         b = ::newFile(s, string(), true);
 249                 else
 250                         return false;
 251         }
 252
 253         buffer(b);
 254         bv_->showErrorList(_("Parse"));
 255
 256         if (tolastfiles)
 257                 lastfiles->newFile(b->fileName());
 258
 259         return true;
 260 }
 261
 262
 263 WorkArea & BufferView::Pimpl::workarea() const
 264 {
 265         return *workarea_.get();
 266 }
 267
 268
 269 LyXScreen & BufferView::Pimpl::screen() const
 270 {
 271         return *screen_.get();
 272 }
 273
 274
 275 Painter & BufferView::Pimpl::painter() const
 276 {
 277         return workarea().getPainter();
 278 }
 279
 280
 281 void BufferView::Pimpl::top_y(int y)
 282 {
 283         top_y_ = y;
 284 }
 285
 286
 287 int BufferView::Pimpl::top_y() const
 288 {
 289         return top_y_;
 290 }
 291
 292
 293 void BufferView::Pimpl::buffer(Buffer * b)
 294 {
 295         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 296                             << b << ')' << endl;
 297         if (buffer_) {
 298                 disconnectBuffer();
 299                 // Put the old text into the TextCache, but
 300                 // only if the buffer is still loaded.
 301                 // Also set the owner of the test to 0
 302                 //              bv_->text->owner(0);
 303                 textcache.add(buffer_, workarea().workWidth(), bv_->text);
 304                 if (lyxerr.debugging())
 305                         textcache.show(lyxerr, "BufferView::buffer");
 306
 307                 bv_->text = 0;
 308         }
 309
 310         // set current buffer
 311         buffer_ = b;
 312
 313         top_y_ = 0;
 314
 315         // if we're quitting lyx, don't bother updating stuff
 316         if (quitting)
 317                 return;
 318
 319         // if we are closing the buffer, use the first buffer as current
 320         if (!buffer_)
 321                 buffer_ = bufferlist.first();
 322
 323         if (buffer_) {
 324                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 325                 connectBuffer(*buffer_);
 326
 327                 // If we don't have a text object for this, we make one
 328                 if (bv_->text == 0)
 329                         resizeCurrentBuffer();
 330
 331                 // FIXME: needed when ?
 332                 top_y(screen().topCursorVisible(bv_->text));
 333
 334                 // Buffer-dependent dialogs should be updated or
 335                 // hidden. This should go here because some dialogs (eg ToC)
 336                 // require bv_->text.
 337                 owner_->getDialogs().updateBufferDependent(true);
 338         } else {
 339                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 340                 owner_->getDialogs().hideBufferDependent();
 341
 342                 // Also remove all remaining text's from the testcache.
 343                 // (there should not be any!) (if there is any it is a
 344                 // bug!)
 345                 if (lyxerr.debugging())
 346                         textcache.show(lyxerr, "buffer delete all");
 347                 textcache.clear();
 348         }
 349
 350         update();
 351         updateScrollbar();
 352         owner_->updateMenubar();
 353         owner_->updateToolbar();
 354         owner_->updateLayoutChoice();
 355         owner_->updateWindowTitle();
 356
 357         if (buffer_) {
 358                 // Don't forget to update the Layout
 359                 string const layoutname =
 360                         bv_->text->cursor.par()->layout()->name();
 361                 owner_->setLayout(layoutname);
 362         }
 363
 364         if (lyx::graphics::Previews::activated() && buffer_)
 365                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 366 }
 367
 368
 369 bool BufferView::Pimpl::fitCursor()
 370 {
 371         bool ret;
 372
 373         if (bv_->theLockingInset()) {
 374                 bv_->theLockingInset()->fitInsetCursor(bv_);
 375                 ret = true;
 376         } else {
 377                 ret = screen().fitCursor(bv_->text, bv_);
 378         }
 379
 380         //dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
 381
 382         // We need to always update, in case we did a
 383         // paste and we stayed anchored to a row, but
 384         // the actual height of the doc changed ...
 385         updateScrollbar();
 386         return ret;
 387 }
 388
 389
 390 void BufferView::Pimpl::redoCurrentBuffer()
 391 {
 392         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 393         if (buffer_ && bv_->text) {
 394                 resizeCurrentBuffer();
 395                 updateScrollbar();
 396                 owner_->updateLayoutChoice();
 397                 update();
 398         }
 399 }
 400
 401
 402 void BufferView::Pimpl::resizeCurrentBuffer()
 403 {
 404         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 405
 406         ParagraphList::iterator par;
 407         ParagraphList::iterator selstartpar;
 408         ParagraphList::iterator selendpar;
 409         UpdatableInset * the_locking_inset = 0;
 410
 411         pos_type pos = 0;
 412         pos_type selstartpos = 0;
 413         pos_type selendpos = 0;
 414         bool selection = false;
 415         bool mark_set  = false;
 416
 417         owner_->busy(true);
 418
 419         owner_->message(_("Formatting document..."));
 420
 421         if (bv_->text) {
 422                 par = bv_->text->cursor.par();
 423                 pos = bv_->text->cursor.pos();
 424                 selstartpar = bv_->text->selection.start.par();
 425                 selstartpos = bv_->text->selection.start.pos();
 426                 selendpar = bv_->text->selection.end.par();
 427                 selendpos = bv_->text->selection.end.pos();
 428                 selection = bv_->text->selection.set();
 429                 mark_set = bv_->text->selection.mark();
 430                 the_locking_inset = bv_->theLockingInset();
 431                 bv_->text->fullRebreak();
 432                 update();
 433         } else {
 434                 lyxerr << "text not available!" << endl;
 435                 // See if we have a text in TextCache that fits
 436                 // the new buffer_ with the correct width.
 437                 bv_->text = textcache.findFit(buffer_, workarea().workWidth());
 438                 if (bv_->text) {
 439                         lyxerr << "text in cache!" << endl;
 440                         if (lyxerr.debugging()) {
 441                                 lyxerr << "Found a LyXText that fits:" << endl;
 442                                 textcache.show(lyxerr, make_pair(buffer_, make_pair(workarea().workWidth(), bv_->text)));
 443                         }
 444                         // Set the owner of the newly found text
 445                         //      bv_->text->owner(bv_);
 446                         if (lyxerr.debugging())
 447                                 textcache.show(lyxerr, "resizeCurrentBuffer");
 448                 } else {
 449                         lyxerr << "no text in cache!" << endl;
 450                         bv_->text = new LyXText(bv_, 0, false, bv_->buffer()->paragraphs());
 451                         bv_->text->init(bv_);
 452                 }
 453
 454                 par = bv_->text->ownerParagraphs().end();
 455                 selstartpar = bv_->text->ownerParagraphs().end();
 456                 selendpar = bv_->text->ownerParagraphs().end();
 457         }
 458
 459 #warning does not help much
 460         //bv_->text->redoParagraphs(bv_->text->ownerParagraphs().begin(),
 461         //      bv_->text->ownerParagraphs().end());
 462
 463         if (par != bv_->text->ownerParagraphs().end()) {
 464                 bv_->text->selection.set(true);
 465                 // At this point just to avoid the Delete-Empty-Paragraph-
 466                 // Mechanism when setting the cursor.
 467                 bv_->text->selection.mark(mark_set);
 468                 if (selection) {
 469                         bv_->text->setCursor(selstartpar, selstartpos);
 470                         bv_->text->selection.cursor = bv_->text->cursor;
 471                         bv_->text->setCursor(selendpar, selendpos);
 472                         bv_->text->setSelection();
 473                         bv_->text->setCursor(par, pos);
 474                 } else {
 475                         bv_->text->setCursor(par, pos);
 476                         bv_->text->selection.cursor = bv_->text->cursor;
 477                         bv_->text->selection.set(false);
 478                 }
 479                 // remake the inset locking
 480                 bv_->theLockingInset(the_locking_inset);
 481         }
 482
 483         top_y(screen().topCursorVisible(bv_->text));
 484
 485         switchKeyMap();
 486         owner_->busy(false);
 487
 488         // reset the "Formatting..." message
 489         owner_->clearMessage();
 490
 491         updateScrollbar();
 492 }
 493
 494
 495 void BufferView::Pimpl::updateScrollbar()
 496 {
 497         if (!bv_->text) {
 498                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 499                 workarea().setScrollbarParams(0, 0, 0);
 500                 return;
 501         }
 502
 503         LyXText const & t = *bv_->text;
 504
 505         lyxerr[Debug::GUI] << "Updating scrollbar: h " << t.height << ", top_y() "
 506                 << top_y() << ", default height " << defaultRowHeight() << endl;
 507
 508         workarea().setScrollbarParams(t.height, top_y(), defaultRowHeight());
 509 }
 510
 511
 512 void BufferView::Pimpl::scrollDocView(int value)
 513 {
 514         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 515
 516         if (!buffer_)
 517                 return;
 518
 519         screen().hideCursor();
 520
 521         top_y(value);
 522         screen().redraw(*bv_);
 523
 524         if (!lyxrc.cursor_follows_scrollbar)
 525                 return;
 526
 527         int const height = defaultRowHeight();
 528         int const first = top_y() + height;
 529         int const last = top_y() + workarea().workHeight() - height;
 530
 531         LyXText * text = bv_->text;
 532         if (text->cursor.y() < first)
 533                 text->setCursorFromCoordinates(0, first);
 534         else if (text->cursor.y() > last)
 535                 text->setCursorFromCoordinates(0, last);
 536
 537         owner_->updateLayoutChoice();
 538 }
 539
 540
 541 void BufferView::Pimpl::scroll(int lines)
 542 {
 543         if (!buffer_) {
 544                 return;
 545         }
 546
 547         LyXText const * t = bv_->text;
 548         int const line_height = defaultRowHeight();
 549
 550         // The new absolute coordinate
 551         int new_top_y = top_y() + lines * line_height;
 552
 553         // Restrict to a valid value
 554         new_top_y = std::min(t->height - 4 * line_height, new_top_y);
 555         new_top_y = std::max(0, new_top_y);
 556
 557         scrollDocView(new_top_y);
 558
 559         // Update the scrollbar.
 560         workarea().setScrollbarParams(t->height, top_y(), defaultRowHeight());
 561 }
 562
 563
 564 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 565                                          key_modifier::state state)
 566 {
 567         bv_->owner()->getLyXFunc().processKeySym(key, state);
 568
 569         /* This is perhaps a bit of a hack. When we move
 570          * around, or type, it's nice to be able to see
 571          * the cursor immediately after the keypress. So
 572          * we reset the toggle timeout and force the visibility
 573          * of the cursor. Note we cannot do this inside
 574          * dispatch() itself, because that's called recursively.
 575          */
 576         if (available()) {
 577                 cursor_timeout.restart();
 578                 screen().showCursor(*bv_);
 579         }
 580 }
 581
 582
 583 void BufferView::Pimpl::selectionRequested()
 584 {
 585         static string sel;
 586
 587         if (!available())
 588                 return;
 589
 590         LyXText * text = bv_->getLyXText();
 591
 592         if (text->selection.set() &&
 593                 (!bv_->text->xsel_cache.set() ||
 594                  text->selection.start != bv_->text->xsel_cache.start ||
 595                  text->selection.end != bv_->text->xsel_cache.end))
 596         {
 597                 bv_->text->xsel_cache = text->selection;
 598                 sel = text->selectionAsString(*bv_->buffer(), false);
 599         } else if (!text->selection.set()) {
 600                 sel = string();
 601                 bv_->text->xsel_cache.set(false);
 602         }
 603         if (!sel.empty()) {
 604                 workarea().putClipboard(sel);
 605         }
 606 }
 607
 608
 609 void BufferView::Pimpl::selectionLost()
 610 {
 611         if (available()) {
 612                 screen().hideCursor();
 613                 bv_->getLyXText()->clearSelection();
 614                 bv_->text->xsel_cache.set(false);
 615         }
 616 }
 617
 618
 619 void BufferView::Pimpl::workAreaResize()
 620 {
 621         static int work_area_width;
 622         static int work_area_height;
 623
 624         bool const widthChange = workarea().workWidth() != work_area_width;
 625         bool const heightChange = workarea().workHeight() != work_area_height;
 626
 627         // update from work area
 628         work_area_width = workarea().workWidth();
 629         work_area_height = workarea().workHeight();
 630
 631         if (buffer_ != 0) {
 632                 if (widthChange) {
 633                         // The visible LyXView need a resize
 634                         resizeCurrentBuffer();
 635
 636                         // Remove all texts from the textcache
 637                         // This is not _really_ what we want to do. What
 638                         // we really want to do is to delete in textcache
 639                         // that does not have a BufferView with matching
 640                         // width, but as long as we have only one BufferView
 641                         // deleting all gives the same result.
 642                         if (lyxerr.debugging())
 643                                 textcache.show(lyxerr, "Expose delete all");
 644                         textcache.clear();
 645                 }
 646         }
 647
 648         if (widthChange || heightChange)
 649                 update();
 650
 651         // always make sure that the scrollbar is sane.
 652         updateScrollbar();
 653         owner_->updateLayoutChoice();
 654 }
 655
 656
 657 void BufferView::Pimpl::update()
 658 {
 659         //lyxerr << "BufferView::update()" << endl;
 660         // fix cursor coordinate cache in case something went wrong
 661         if (bv_->getLyXText()) {
 662                 // check needed to survive LyX startup
 663                 bv_->getLyXText()->redoCursor();
 664         }
 665         screen().redraw(*bv_);
 666 }
 667
 668
 669 // Callback for cursor timer
 670 void BufferView::Pimpl::cursorToggle()
 671 {
 672         if (!buffer_) {
 673                 cursor_timeout.restart();
 674                 return;
 675         }
 676
 677         screen().toggleCursor(*bv_);
 678
 679         cursor_timeout.restart();
 680 }
 681
 682
 683 bool BufferView::Pimpl::available() const
 684 {
 685         if (buffer_ && bv_->text)
 686                 return true;
 687         return false;
 688 }
 689
 690
 691 Change const BufferView::Pimpl::getCurrentChange()
 692 {
 693         if (!bv_->buffer()->params().tracking_changes)
 694                 return Change(Change::UNCHANGED);
 695
 696         LyXText * text = bv_->getLyXText();
 697
 698         if (!text->selection.set())
 699                 return Change(Change::UNCHANGED);
 700
 701         LyXCursor const & cur = text->selection.start;
 702         return cur.par()->lookupChangeFull(cur.pos());
 703 }
 704
 705
 706 void BufferView::Pimpl::beforeChange(LyXText * text)
 707 {
 708         text->clearSelection();
 709 }
 710
 711
 712 void BufferView::Pimpl::savePosition(unsigned int i)
 713 {
 714         if (i >= saved_positions_num)
 715                 return;
 716         saved_positions[i] = Position(buffer_->fileName(),
 717                                       bv_->text->cursor.par()->id(),
 718                                       bv_->text->cursor.pos());
 719         if (i > 0)
 720                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 721 }
 722
 723
 724 void BufferView::Pimpl::restorePosition(unsigned int i)
 725 {
 726         if (i >= saved_positions_num)
 727                 return;
 728
 729         string const fname = saved_positions[i].filename;
 730
 731         beforeChange(bv_->text);
 732
 733         if (fname != buffer_->fileName()) {
 734                 Buffer * b;
 735                 if (bufferlist.exists(fname))
 736                         b = bufferlist.getBuffer(fname);
 737                 else {
 738                         b = bufferlist.newBuffer(fname);
 739                         ::loadLyXFile(b, fname); // don't ask, just load it
 740                 }
 741                 if (b != 0)
 742                         buffer(b);
 743         }
 744
 745         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 746         if (par == buffer_->par_iterator_end())
 747                 return;
 748
 749         bv_->text->setCursor(par.pit(),
 750                              min(par->size(), saved_positions[i].par_pos));
 751
 752         update();
 753         if (i > 0)
 754                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 755 }
 756
 757
 758 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 759 {
 760         if (i >= saved_positions_num)
 761                 return false;
 762
 763         return !saved_positions[i].filename.empty();
 764 }
 765
 766
 767 void BufferView::Pimpl::switchKeyMap()
 768 {
 769         if (!lyxrc.rtl_support)
 770                 return;
 771
 772         LyXText * text = bv_->getLyXText();
 773         if (text->real_current_font.isRightToLeft()
 774             && !(bv_->theLockingInset()
 775                  && bv_->theLockingInset()->lyxCode() == InsetOld::ERT_CODE))
 776         {
 777                 if (owner_->getIntl().keymap == Intl::PRIMARY)
 778                         owner_->getIntl().KeyMapSec();
 779         } else {
 780                 if (owner_->getIntl().keymap == Intl::SECONDARY)
 781                         owner_->getIntl().KeyMapPrim();
 782         }
 783 }
 784
 785
 786 void BufferView::Pimpl::insetUnlock()
 787 {
 788         if (bv_->theLockingInset()) {
 789                 bv_->theLockingInset()->insetUnlock(bv_);
 790                 bv_->theLockingInset(0);
 791                 finishUndo();
 792         }
 793 }
 794
 795
 796 void BufferView::Pimpl::center()
 797 {
 798         LyXText * text = bv_->text;
 799
 800         beforeChange(text);
 801         int const half_height = workarea().workHeight() / 2;
 802         int new_y = std::max(0, text->cursor.y() - half_height);
 803
 804         // FIXME: look at this comment again ...
 805
 806         // FIXME: can we do this w/o calling screen directly ?
 807         // This updates top_y() but means the fitCursor() call
 808         // from the update(FITCUR) doesn't realise that we might
 809         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 810         // the scrollbar to be updated as it should, so we have
 811         // to do it manually. Any operation that does a center()
 812         // and also might have moved top_y() must make sure to call
 813         // updateScrollbar() currently. Never mind that this is a
 814         // pretty obfuscated way of updating t->top_y()
 815         top_y(new_y);
 816         //screen().draw();
 817         update();
 818 }
 819
 820
 821 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 822 {
 823         workarea().putClipboard(stuff);
 824 }
 825
 826
 827 /*
 828  * Dispatch functions for actions which can be valid for BufferView->text
 829  * and/or InsetText->text!!!
 830  */
 831
 832
 833 InsetOld * BufferView::Pimpl::getInsetByCode(InsetOld::Code code)
 834 {
 835 #if 0
 836         LyXCursor cursor = bv_->getLyXText()->cursor;
 837         Buffer::inset_iterator it =
 838                 find_if(Buffer::inset_iterator(
 839                         cursor.par(), cursor.pos()),
 840                         buffer_->inset_iterator_end(),
 841                         lyx::compare_memfun(&Inset::lyxCode, code));
 842         return it != buffer_->inset_iterator_end() ? (*it) : 0;
 843 #else
 844         // Ok, this is a little bit too brute force but it
 845         // should work for now. Better infrastructure is coming. (Lgb)
 846
 847         Buffer * b = bv_->buffer();
 848         LyXCursor cursor = bv_->getLyXText()->cursor;
 849
 850         Buffer::inset_iterator beg = b->inset_iterator_begin();
 851         Buffer::inset_iterator end = b->inset_iterator_end();
 852
 853         bool cursor_par_seen = false;
 854
 855         for (; beg != end; ++beg) {
 856                 if (beg.getPar() == cursor.par()) {
 857                         cursor_par_seen = true;
 858                 }
 859                 if (cursor_par_seen) {
 860                         if (beg.getPar() == cursor.par()
 861                             && beg.getPos() >= cursor.pos()) {
 862                                 break;
 863                         } else if (beg.getPar() != cursor.par()) {
 864                                 break;
 865                         }
 866                 }
 867
 868         }
 869         if (beg != end) {
 870                 // Now find the first inset that matches code.
 871                 for (; beg != end; ++beg) {
 872                         if (beg->lyxCode() == code) {
 873                                 return &(*beg);
 874                         }
 875                 }
 876         }
 877         return 0;
 878 #endif
 879 }
 880
 881
 882 void BufferView::Pimpl::MenuInsertLyXFile(string const & filen)
 883 {
 884         string filename = filen;
 885
 886         if (filename.empty()) {
 887                 // Launch a file browser
 888                 string initpath = lyxrc.document_path;
 889
 890                 if (available()) {
 891                         string const trypath = owner_->buffer()->filePath();
 892                         // If directory is writeable, use this as default.
 893                         if (IsDirWriteable(trypath))
 894                                 initpath = trypath;
 895                 }
 896
 897                 FileDialog fileDlg(_("Select LyX document to insert"),
 898                         LFUN_FILE_INSERT,
 899                         make_pair(string(_("Documents|#o#O")),
 900                                   string(lyxrc.document_path)),
 901                         make_pair(string(_("Examples|#E#e")),
 902                                   string(AddPath(system_lyxdir(), "examples"))));
 903
 904                 FileDialog::Result result =
 905                         fileDlg.open(initpath,
 906                                        _("*.lyx| LyX Documents (*.lyx)"));
 907
 908                 if (result.first == FileDialog::Later)
 909                         return;
 910
 911                 filename = result.second;
 912
 913                 // check selected filename
 914                 if (filename.empty()) {
 915                         owner_->message(_("Canceled."));
 916                         return;
 917                 }
 918         }
 919
 920         // get absolute path of file and add ".lyx" to the filename if
 921         // necessary
 922         filename = FileSearch(string(), filename, "lyx");
 923
 924         string const disp_fn = MakeDisplayPath(filename);
 925         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 926         if (bv_->insertLyXFile(filename))
 927                 owner_->message(bformat(_("Document %1$s inserted."),
 928                                         disp_fn));
 929         else
 930                 owner_->message(bformat(_("Could not insert document %1$s"),
 931                                         disp_fn));
 932 }
 933
 934
 935 void BufferView::Pimpl::trackChanges()
 936 {
 937         Buffer * buf(bv_->buffer());
 938         bool const tracking(buf->params().tracking_changes);
 939
 940         if (!tracking) {
 941                 ParIterator const end = buf->par_iterator_end();
 942                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 943                         it->trackChanges();
 944                 buf->params().tracking_changes = true;
 945
 946                 // we cannot allow undos beyond the freeze point
 947                 buf->undostack().clear();
 948         } else {
 949                 update();
 950                 bv_->text->setCursor(buf->paragraphs().begin(), 0);
 951 #warning changes FIXME
 952                 //moveCursorUpdate(false);
 953
 954                 bool found = lyx::find::findNextChange(bv_);
 955                 if (found) {
 956                         owner_->getDialogs().show("changes");
 957                         return;
 958                 }
 959
 960                 ParIterator const end = buf->par_iterator_end();
 961                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 962                         it->untrackChanges();
 963                 buf->params().tracking_changes = false;
 964         }
 965
 966         buf->redostack().clear();
 967 }
 968
 969
 970 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & ev)
 971 {
 972         switch (ev.action) {
 973         case LFUN_MOUSE_PRESS:
 974         case LFUN_MOUSE_MOTION:
 975         case LFUN_MOUSE_RELEASE:
 976         case LFUN_MOUSE_DOUBLE:
 977         case LFUN_MOUSE_TRIPLE:
 978         {
 979                 // We pass those directly to the Bufferview, since
 980                 // otherwise selection handling breaks down
 981
 982                 // Doesn't go through lyxfunc, so we need to update
 983                 // the layout choice etc. ourselves
 984
 985                 // e.g. Qt mouse press when no buffer
 986                 if (!available())
 987                         return false;
 988
 989                 screen().hideCursor();
 990
 991                 bool const res = dispatch(ev);
 992
 993                 // see workAreaKeyPress
 994                 cursor_timeout.restart();
 995                 screen().showCursor(*bv_);
 996
 997                 // FIXME: we should skip these when selecting
 998                 owner_->updateLayoutChoice();
 999                 owner_->updateToolbar();
1000                 fitCursor();
1001
1002                 // slight hack: this is only called currently when we
1003                 // clicked somewhere, so we force through the display
1004                 // of the new status here.
1005                 owner_->clearMessage();
1006
1007                 return res;
1008         }
1009         default:
1010                 owner_->dispatch(ev);
1011                 return true;
1012         }
1013 }
1014
1015
1016 bool BufferView::Pimpl::dispatch(FuncRequest const & ev_in)
1017 {
1018         // Make sure that the cached BufferView is correct.
1019         FuncRequest ev = ev_in;
1020         ev.setView(bv_);
1021
1022         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
1023                 << " action[" << ev.action << ']'
1024                 << " arg[" << ev.argument << ']'
1025                 << " x[" << ev.x << ']'
1026                 << " y[" << ev.y << ']'
1027                 << " button[" << ev.button() << ']'
1028                 << endl;
1029
1030         LyXTextClass const & tclass = buffer_->params().getLyXTextClass();
1031
1032         switch (ev.action) {
1033
1034         case LFUN_SCROLL_INSET:
1035                 // this is not handled here as this function is only active
1036                 // if we have a locking_inset and that one is (or contains)
1037                 // a tabular-inset
1038                 break;
1039
1040         case LFUN_FILE_INSERT:
1041                 MenuInsertLyXFile(ev.argument);
1042                 break;
1043
1044         case LFUN_FILE_INSERT_ASCII_PARA:
1045                 InsertAsciiFile(bv_, ev.argument, true);
1046                 break;
1047
1048         case LFUN_FILE_INSERT_ASCII:
1049                 InsertAsciiFile(bv_, ev.argument, false);
1050                 break;
1051
1052         case LFUN_LANGUAGE:
1053                 lang(bv_, ev.argument);
1054                 switchKeyMap();
1055                 owner_->view_state_changed();
1056                 break;
1057
1058         case LFUN_EMPH:
1059                 emph(bv_);
1060                 owner_->view_state_changed();
1061                 break;
1062
1063         case LFUN_BOLD:
1064                 bold(bv_);
1065                 owner_->view_state_changed();
1066                 break;
1067
1068         case LFUN_NOUN:
1069                 noun(bv_);
1070                 owner_->view_state_changed();
1071                 break;
1072
1073         case LFUN_CODE:
1074                 code(bv_);
1075                 owner_->view_state_changed();
1076                 break;
1077
1078         case LFUN_SANS:
1079                 sans(bv_);
1080                 owner_->view_state_changed();
1081                 break;
1082
1083         case LFUN_ROMAN:
1084                 roman(bv_);
1085                 owner_->view_state_changed();
1086                 break;
1087
1088         case LFUN_DEFAULT:
1089                 styleReset(bv_);
1090                 owner_->view_state_changed();
1091                 break;
1092
1093         case LFUN_UNDERLINE:
1094                 underline(bv_);
1095                 owner_->view_state_changed();
1096                 break;
1097
1098         case LFUN_FONT_SIZE:
1099                 fontSize(bv_, ev.argument);
1100                 owner_->view_state_changed();
1101                 break;
1102
1103         case LFUN_FONT_STATE:
1104                 owner_->getLyXFunc().setMessage(currentState(bv_));
1105                 break;
1106
1107         case LFUN_INSERT_LABEL: {
1108                 // Try and generate a valid label
1109                 string const contents = ev.argument.empty() ?
1110                         getPossibleLabel(*bv_) : ev.argument;
1111                 InsetCommandParams icp("label", contents);
1112                 string data = InsetCommandMailer::params2string("label", icp);
1113                 owner_->getDialogs().show("label", data, 0);
1114         }
1115         break;
1116
1117         case LFUN_BOOKMARK_SAVE:
1118                 savePosition(strToUnsignedInt(ev.argument));
1119                 break;
1120
1121         case LFUN_BOOKMARK_GOTO:
1122                 restorePosition(strToUnsignedInt(ev.argument));
1123                 break;
1124
1125         case LFUN_REF_GOTO: {
1126                 string label = ev.argument;
1127                 if (label.empty()) {
1128                         InsetRef * inset =
1129                                 static_cast<InsetRef*>(getInsetByCode(InsetOld::REF_CODE));
1130                         if (inset) {
1131                                 label = inset->getContents();
1132                                 savePosition(0);
1133                         }
1134                 }
1135
1136                 if (!label.empty())
1137                         bv_->gotoLabel(label);
1138         }
1139         break;
1140
1141         // --- accented characters ---------------------------
1142
1143         case LFUN_UMLAUT:
1144         case LFUN_CIRCUMFLEX:
1145         case LFUN_GRAVE:
1146         case LFUN_ACUTE:
1147         case LFUN_TILDE:
1148         case LFUN_CEDILLA:
1149         case LFUN_MACRON:
1150         case LFUN_DOT:
1151         case LFUN_UNDERDOT:
1152         case LFUN_UNDERBAR:
1153         case LFUN_CARON:
1154         case LFUN_SPECIAL_CARON:
1155         case LFUN_BREVE:
1156         case LFUN_TIE:
1157         case LFUN_HUNG_UMLAUT:
1158         case LFUN_CIRCLE:
1159         case LFUN_OGONEK:
1160                 if (ev.argument.empty()) {
1161                         // As always...
1162                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1163                 } else {
1164                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1165                         owner_->getIntl().getTransManager()
1166                                 .TranslateAndInsert(ev.argument[0], bv_->getLyXText());
1167                         update();
1168                 }
1169                 break;
1170
1171         case LFUN_MATH_MACRO:
1172         case LFUN_MATH_DELIM:
1173         case LFUN_INSERT_MATRIX:
1174         case LFUN_INSERT_MATH:
1175         case LFUN_MATH_IMPORT_SELECTION: // Imports LaTeX from the X selection
1176         case LFUN_MATH_DISPLAY:          // Open or create a displayed math inset
1177         case LFUN_MATH_MODE:             // Open or create an inlined math inset
1178                 mathDispatch(ev);
1179                 break;
1180
1181         case LFUN_INSET_APPLY: {
1182                 string const name = ev.getArg(0);
1183
1184                 InsetBase * inset = owner_->getDialogs().getOpenInset(name);
1185                 if (inset) {
1186                         // This works both for 'original' and 'mathed' insets.
1187                         // Note that the localDispatch performs updateInset
1188                         // also.
1189                         FuncRequest fr(bv_, LFUN_INSET_MODIFY, ev.argument);
1190                         inset->localDispatch(fr);
1191                 } else {
1192                         FuncRequest fr(bv_, LFUN_INSET_INSERT, ev.argument);
1193                         dispatch(fr);
1194                 }
1195         }
1196         break;
1197
1198         case LFUN_INSET_INSERT: {
1199                 InsetOld * inset = createInset(ev);
1200                 if (inset && insertInset(inset)) {
1201                         updateInset(inset);
1202
1203                         string const name = ev.getArg(0);
1204                         if (name == "bibitem") {
1205                                 // We need to do a redraw because the maximum
1206                                 // InsetBibitem width could have changed
1207 #warning check whether the update() is needed at all
1208                                 bv_->update();
1209                         }
1210                 } else {
1211                         delete inset;
1212                 }
1213         }
1214         break;
1215
1216         case LFUN_FLOAT_LIST:
1217                 if (tclass.floats().typeExist(ev.argument)) {
1218                         InsetOld * inset = new InsetFloatList(ev.argument);
1219                         if (!insertInset(inset, tclass.defaultLayoutName()))
1220                                 delete inset;
1221                 } else {
1222                         lyxerr << "Non-existent float type: "
1223                                << ev.argument << endl;
1224                 }
1225                 break;
1226
1227         case LFUN_LAYOUT_PARAGRAPH: {
1228                 string data;
1229                 params2string(*bv_->getLyXText()->cursor.par(), data);
1230
1231                 data = "show\n" + data;
1232                 bv_->owner()->getDialogs().show("paragraph", data);
1233                 break;
1234         }
1235
1236         case LFUN_PARAGRAPH_UPDATE: {
1237                 if (!bv_->owner()->getDialogs().visible("paragraph"))
1238                         break;
1239                 Paragraph const & par = *bv_->getLyXText()->cursor.par();
1240
1241                 string data;
1242                 params2string(par, data);
1243
1244                 // Will the paragraph accept changes from the dialog?
1245                 InsetOld * const inset = par.inInset();
1246                 bool const accept =
1247                         !(inset && inset->forceDefaultParagraphs(inset));
1248
1249                 data = "update " + tostr(accept) + '\n' + data;
1250                 bv_->owner()->getDialogs().update("paragraph", data);
1251                 break;
1252         }
1253
1254         case LFUN_PARAGRAPH_APPLY:
1255                 setParagraphParams(*bv_, ev.argument);
1256                 break;
1257
1258         case LFUN_THESAURUS_ENTRY:
1259         {
1260                 string arg = ev.argument;
1261
1262                 if (arg.empty()) {
1263                         arg = bv_->getLyXText()->selectionAsString(*buffer_,
1264                                                                    false);
1265
1266                         // FIXME
1267                         if (arg.size() > 100 || arg.empty()) {
1268                                 // Get word or selection
1269                                 bv_->getLyXText()->selectWordWhenUnderCursor(lyx::WHOLE_WORD);
1270                                 arg = bv_->getLyXText()->selectionAsString(*buffer_, false);
1271                                 // FIXME: where is getLyXText()->unselect(bv_) ?
1272                         }
1273                 }
1274
1275                 bv_->owner()->getDialogs().show("thesaurus", arg);
1276         }
1277                 break;
1278
1279         case LFUN_TRACK_CHANGES:
1280                 trackChanges();
1281                 break;
1282
1283         case LFUN_MERGE_CHANGES:
1284                 owner_->getDialogs().show("changes");
1285                 break;
1286
1287         case LFUN_ACCEPT_ALL_CHANGES: {
1288                 bv_->text->setCursor(bv_->buffer()->paragraphs().begin(), 0);
1289 #warning FIXME changes
1290                 //moveCursorUpdate(false);
1291
1292                 while (lyx::find::findNextChange(bv_))
1293                         bv_->getLyXText()->acceptChange();
1294
1295                 update();
1296                 break;
1297         }
1298
1299         case LFUN_REJECT_ALL_CHANGES: {
1300                 bv_->text->setCursor(bv_->buffer()->paragraphs().begin(), 0);
1301 #warning FIXME changes
1302                 //moveCursorUpdate(false);
1303
1304                 while (lyx::find::findNextChange(bv_))
1305                         bv_->getLyXText()->rejectChange();
1306
1307                 update();
1308                 break;
1309         }
1310
1311         case LFUN_ACCEPT_CHANGE: {
1312                 bv_->getLyXText()->acceptChange();
1313                 update();
1314                 break;
1315         }
1316
1317         case LFUN_REJECT_CHANGE: {
1318                 bv_->getLyXText()->rejectChange();
1319                 update();
1320                 break;
1321         }
1322
1323         case LFUN_UNKNOWN_ACTION:
1324                 ev.errorMessage(N_("Unknown function!"));
1325                 break;
1326
1327         default:
1328                 return bv_->getLyXText()->dispatch(FuncRequest(ev, bv_));
1329         } // end of switch
1330
1331         return true;
1332 }
1333
1334
1335 bool BufferView::Pimpl::insertInset(InsetOld * inset, string const & lout)
1336 {
1337         // if we are in a locking inset we should try to insert the
1338         // inset there otherwise this is a illegal function now
1339         if (bv_->theLockingInset()) {
1340                 if (bv_->theLockingInset()->insetAllowed(inset))
1341                         return bv_->theLockingInset()->insertInset(bv_, inset);
1342                 return false;
1343         }
1344
1345         // not quite sure if we want this...
1346         recordUndo(bv_, Undo::ATOMIC);
1347         freezeUndo();
1348
1349         beforeChange(bv_->text);
1350         if (!lout.empty()) {
1351                 bv_->text->breakParagraph(bv_->buffer()->paragraphs());
1352
1353                 if (!bv_->text->cursor.par()->empty()) {
1354                         bv_->text->cursorLeft(bv_);
1355                         bv_->text->breakParagraph(bv_->buffer()->paragraphs());
1356                 }
1357
1358                 string lres = lout;
1359                 LyXTextClass const & tclass = buffer_->params().getLyXTextClass();
1360                 bool hasLayout = tclass.hasLayout(lres);
1361                 string lay = tclass.defaultLayoutName();
1362
1363                 if (hasLayout != false) {
1364                         // layout found
1365                         lay = lres;
1366                 } else {
1367                         // layout not fount using default
1368                         lay = tclass.defaultLayoutName();
1369                 }
1370
1371                 bv_->text->setLayout(lay);
1372
1373                 bv_->text->setParagraph(0, 0,
1374                                    0, 0,
1375                                    VSpace(VSpace::NONE), VSpace(VSpace::NONE),
1376                                    Spacing(),
1377                                    LYX_ALIGN_LAYOUT,
1378                                    string(),
1379                                    0);
1380         }
1381
1382         bv_->text->insertInset(inset);
1383         update();
1384
1385         unFreezeUndo();
1386         return true;
1387 }
1388
1389
1390 void BufferView::Pimpl::updateInset(InsetOld const * inset)
1391 {
1392         if (!available())
1393                 return;
1394
1395         bv_->text->redoParagraph(outerPar(*bv_->buffer(), inset));
1396
1397         // this should not be needed, but it is...
1398         // bv_->text->redoParagraph(bv_->text->cursor.par());
1399         // bv_->text->fullRebreak();
1400
1401         update();
1402         updateScrollbar();
1403 }
1404
1405
1406 bool BufferView::Pimpl::ChangeInsets(InsetOld::Code code,
1407                                      string const & from, string const & to)
1408 {
1409         bool need_update = false;
1410         LyXCursor cursor = bv_->text->cursor;
1411         LyXCursor tmpcursor = cursor;
1412         cursor.par(tmpcursor.par());
1413         cursor.pos(tmpcursor.pos());
1414
1415         ParIterator end = bv_->buffer()->par_iterator_end();
1416         for (ParIterator it = bv_->buffer()->par_iterator_begin();
1417              it != end; ++it) {
1418                 bool changed_inset = false;
1419                 for (InsetList::iterator it2 = it->insetlist.begin();
1420                      it2 != it->insetlist.end(); ++it2) {
1421                         if (it2->inset->lyxCode() == code) {
1422                                 InsetCommand * inset = static_cast<InsetCommand *>(it2->inset);
1423                                 if (inset->getContents() == from) {
1424                                         inset->setContents(to);
1425                                         changed_inset = true;
1426                                 }
1427                         }
1428                 }
1429                 if (changed_inset) {
1430                         need_update = true;
1431
1432                         // FIXME
1433
1434                         // The test it.size()==1 was needed to prevent crashes.
1435                         // How to set the cursor corretly when it.size()>1 ??
1436                         if (it.size() == 1) {
1437                                 bv_->text->setCursorIntern(it.pit(), 0);
1438                                 bv_->text->redoParagraph(bv_->text->cursor.par());
1439                         }
1440                 }
1441         }
1442         bv_->text->setCursorIntern(cursor.par(), cursor.pos());
1443         return need_update;
1444 }