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 "dispatchresult.h"
  29 #include "factory.h"
  30 #include "FloatList.h"
  31 #include "funcrequest.h"
  32 #include "gettext.h"
  33 #include "intl.h"
  34 #include "iterators.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 "undo.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/math_hullinset.h"
  63
  64 #include "support/filetools.h"
  65 #include "support/globbing.h"
  66 #include "support/path_defines.h"
  67 #include "support/tostr.h"
  68
  69 #include <boost/bind.hpp>
  70
  71 using bv_funcs::currentState;
  72
  73 using lyx::pos_type;
  74
  75 using lyx::support::AddPath;
  76 using lyx::support::bformat;
  77 using lyx::support::FileFilterList;
  78 using lyx::support::FileSearch;
  79 using lyx::support::IsDirWriteable;
  80 using lyx::support::MakeDisplayPath;
  81 using lyx::support::strToUnsignedInt;
  82 using lyx::support::system_lyxdir;
  83
  84 using std::endl;
  85 using std::make_pair;
  86 using std::min;
  87 using std::string;
  88
  89
  90 extern BufferList bufferlist;
  91
  92
  93 namespace {
  94
  95 unsigned int const saved_positions_num = 20;
  96
  97 // All the below connection objects are needed because of a bug in some
  98 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
  99 // to these connections we avoid a segfault upon startup, and also at exit.
 100 // (Lgb)
 101
 102 boost::signals::connection dispatchcon;
 103 boost::signals::connection timecon;
 104 boost::signals::connection doccon;
 105 boost::signals::connection resizecon;
 106 boost::signals::connection kpresscon;
 107 boost::signals::connection selectioncon;
 108 boost::signals::connection lostcon;
 109
 110
 111 } // anon namespace
 112
 113
 114 BufferView::Pimpl::Pimpl(BufferView & bv, LyXView * owner,
 115              int xpos, int ypos, int width, int height)
 116         : bv_(&bv), owner_(owner), buffer_(0), cursor_timeout(400),
 117           using_xterm_cursor(false), cursor_(bv)
 118 {
 119         xsel_cache_.set = 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_ =
 164                 buf.error.connect(boost::bind(&BufferView::Pimpl::addError, this, _1));
 165         messageConnection_ =
 166                 buf.message.connect(boost::bind(&LyXView::message, owner_, _1));
 167         busyConnection_ =
 168                 buf.busy.connect(boost::bind(&LyXView::busy, owner_, _1));
 169         titleConnection_ =
 170                 buf.updateTitles.connect(boost::bind(&LyXView::updateWindowTitle, owner_));
 171         timerConnection_ =
 172                 buf.resetAutosaveTimers.connect(boost::bind(&LyXView::resetAutosaveTimer, owner_));
 173         readonlyConnection_ =
 174                 buf.readonly.connect(boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 175         closingConnection_ =
 176                 buf.closing.connect(boost::bind(&BufferView::Pimpl::buffer, this, (Buffer *)0));
 177 }
 178
 179
 180 void BufferView::Pimpl::disconnectBuffer()
 181 {
 182         errorConnection_.disconnect();
 183         messageConnection_.disconnect();
 184         busyConnection_.disconnect();
 185         titleConnection_.disconnect();
 186         timerConnection_.disconnect();
 187         readonlyConnection_.disconnect();
 188         closingConnection_.disconnect();
 189 }
 190
 191
 192 bool BufferView::Pimpl::newFile(string const & filename,
 193                                 string const & tname,
 194                                 bool isNamed)
 195 {
 196         Buffer * b = ::newFile(filename, tname, isNamed);
 197         buffer(b);
 198         return true;
 199 }
 200
 201
 202 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 203 {
 204         // get absolute path of file and add ".lyx" to the filename if
 205         // necessary
 206         string s = FileSearch(string(), filename, "lyx");
 207
 208         bool const found = !s.empty();
 209
 210         if (!found)
 211                 s = filename;
 212
 213         // file already open?
 214         if (bufferlist.exists(s)) {
 215                 string const file = MakeDisplayPath(s, 20);
 216                 string text = bformat(_("The document %1$s is already "
 217                                         "loaded.\n\nDo you want to revert "
 218                                         "to the saved version?"), file);
 219                 int const ret = Alert::prompt(_("Revert to saved document?"),
 220                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 221
 222                 if (ret != 0) {
 223                         buffer(bufferlist.getBuffer(s));
 224                         return true;
 225                 } else {
 226                         // FIXME: should be LFUN_REVERT
 227                         if (!bufferlist.close(bufferlist.getBuffer(s), false))
 228                                 return false;
 229                         // Fall through to new load. (Asger)
 230                 }
 231         }
 232
 233         Buffer * b;
 234
 235         if (found) {
 236                 b = bufferlist.newBuffer(s);
 237                 connectBuffer(*b);
 238                 if (!::loadLyXFile(b, s)) {
 239                         bufferlist.release(b);
 240                         return false;
 241                 }
 242         } else {
 243                 string text = bformat(_("The document %1$s does not yet "
 244                                         "exist.\n\nDo you want to create "
 245                                         "a new document?"), s);
 246                 int const ret = Alert::prompt(_("Create new document?"),
 247                          text, 0, 1, _("&Create"), _("Cancel"));
 248
 249                 if (ret == 0)
 250                         b = ::newFile(s, string(), true);
 251                 else
 252                         return false;
 253         }
 254
 255         buffer(b);
 256         bv_->showErrorList(_("Parse"));
 257
 258         if (tolastfiles)
 259                 LyX::ref().lastfiles().newFile(b->fileName());
 260
 261         return true;
 262 }
 263
 264
 265 WorkArea & BufferView::Pimpl::workarea() const
 266 {
 267         return *workarea_.get();
 268 }
 269
 270
 271 LyXScreen & BufferView::Pimpl::screen() const
 272 {
 273         return *screen_.get();
 274 }
 275
 276
 277 Painter & BufferView::Pimpl::painter() const
 278 {
 279         return workarea().getPainter();
 280 }
 281
 282
 283 void BufferView::Pimpl::top_y(int y)
 284 {
 285         top_y_ = y;
 286 }
 287
 288
 289 int BufferView::Pimpl::top_y() const
 290 {
 291         return top_y_;
 292 }
 293
 294
 295 void BufferView::Pimpl::buffer(Buffer * b)
 296 {
 297         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 298                             << b << ')' << endl;
 299         if (buffer_) {
 300                 disconnectBuffer();
 301                 //delete bv_->text();
 302                 //bv_->setText(0);
 303         }
 304
 305         // reset old cursor
 306         cursor_.reset();
 307
 308         // set current buffer
 309         buffer_ = b;
 310
 311         top_y_ = 0;
 312
 313         // if we're quitting lyx, don't bother updating stuff
 314         if (quitting)
 315                 return;
 316
 317         // if we are closing the buffer, use the first buffer as current
 318         if (!buffer_)
 319                 buffer_ = bufferlist.first();
 320
 321         if (buffer_) {
 322                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 323                 connectBuffer(*buffer_);
 324
 325                 buffer_->text().init(bv_);
 326                 buffer_->text().textwidth_ = workarea().workWidth();
 327                 buffer_->text().fullRebreak();
 328
 329                 // If we don't have a text object for this, we make one
 330                 if (bv_->text() == 0)
 331                         resizeCurrentBuffer();
 332
 333                 // FIXME: needed when ?
 334                 fitCursor();
 335
 336                 // Buffer-dependent dialogs should be updated or
 337                 // hidden. This should go here because some dialogs (eg ToC)
 338                 // require bv_->text.
 339                 owner_->getDialogs().updateBufferDependent(true);
 340         } else {
 341                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 342                 owner_->getDialogs().hideBufferDependent();
 343         }
 344
 345         update();
 346         updateScrollbar();
 347         owner_->updateMenubar();
 348         owner_->updateToolbar();
 349         owner_->updateLayoutChoice();
 350         owner_->updateWindowTitle();
 351
 352         // Don't forget to update the Layout
 353         if (buffer_)
 354                 owner_->setLayout(bv_->text()->cursorPar()->layout()->name());
 355
 356         if (lyx::graphics::Previews::activated() && buffer_)
 357                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 358 }
 359
 360
 361 bool BufferView::Pimpl::fitCursor()
 362 {
 363         lyxerr << "BufferView::Pimpl::fitCursor." << endl;
 364         if (screen().fitCursor(bv_)) {
 365                 updateScrollbar();
 366                 return true;
 367         }
 368         return false;
 369 }
 370
 371
 372 void BufferView::Pimpl::redoCurrentBuffer()
 373 {
 374         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 375         if (buffer_ && bv_->text()) {
 376                 resizeCurrentBuffer();
 377                 updateScrollbar();
 378                 owner_->updateLayoutChoice();
 379         }
 380 }
 381
 382
 383 void BufferView::Pimpl::resizeCurrentBuffer()
 384 {
 385         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 386
 387         int par = -1;
 388         int selstartpar = -1;
 389         int selendpar = -1;
 390
 391         pos_type pos = 0;
 392         pos_type selstartpos = 0;
 393         pos_type selendpos = 0;
 394         bool sel = false;
 395         bool mark_set  = false;
 396
 397         owner_->busy(true);
 398
 399         owner_->message(_("Formatting document..."));
 400
 401         LyXText * text = bv_->text();
 402         lyxerr << "### resizeCurrentBuffer: text " << text << endl;
 403         if (!text)
 404                 return;
 405
 406         LCursor & cur = bv_->cursor();
 407         par = cur.par();
 408         pos = cur.pos();
 409         selstartpar = cur.selBegin().par();
 410         selstartpos = cur.selBegin().pos();
 411         selendpar = cur.selEnd().par();
 412         selendpos = cur.selEnd().pos();
 413         sel = cur.selection();
 414         mark_set = cur.mark();
 415         text->textwidth_ = bv_->workWidth();
 416         text->fullRebreak();
 417         update();
 418
 419         if (par != -1) {
 420                 cur.selection() = true;
 421                 // At this point just to avoid the Delete-Empty-Paragraph-
 422                 // Mechanism when setting the cursor.
 423                 cur.mark() = mark_set;
 424                 if (sel) {
 425                         text->setCursor(selstartpar, selstartpos);
 426                         cur.resetAnchor();
 427                         text->setCursor(selendpar, selendpos);
 428                         cur.setSelection();
 429                         text->setCursor(par, pos);
 430                 } else {
 431                         text->setCursor(par, pos);
 432                         cur.resetAnchor();
 433                         cur.selection() = false;
 434                 }
 435         }
 436
 437         fitCursor();
 438
 439         switchKeyMap();
 440         owner_->busy(false);
 441
 442         // reset the "Formatting..." message
 443         owner_->clearMessage();
 444
 445         updateScrollbar();
 446 }
 447
 448
 449 void BufferView::Pimpl::updateScrollbar()
 450 {
 451         if (!bv_->text()) {
 452                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 453                 workarea().setScrollbarParams(0, 0, 0);
 454                 return;
 455         }
 456
 457         LyXText const & t = *bv_->text();
 458
 459         lyxerr[Debug::GUI] << "Updating scrollbar: h " << t.height << ", top_y() "
 460                 << top_y() << ", default height " << defaultRowHeight() << endl;
 461
 462         workarea().setScrollbarParams(t.height, top_y(), defaultRowHeight());
 463 }
 464
 465
 466 void BufferView::Pimpl::scrollDocView(int value)
 467 {
 468         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 469
 470         if (!buffer_)
 471                 return;
 472
 473         screen().hideCursor();
 474
 475         top_y(value);
 476         screen().redraw(*bv_);
 477
 478         if (!lyxrc.cursor_follows_scrollbar)
 479                 return;
 480
 481         int const height = defaultRowHeight();
 482         int const first = top_y() + height;
 483         int const last = top_y() + workarea().workHeight() - height;
 484
 485         LyXText * text = bv_->text();
 486         if (text->cursorY() < first)
 487                 text->setCursorFromCoordinates(0, first);
 488         else if (text->cursorY() > last)
 489                 text->setCursorFromCoordinates(0, last);
 490
 491         owner_->updateLayoutChoice();
 492 }
 493
 494
 495 void BufferView::Pimpl::scroll(int lines)
 496 {
 497         if (!buffer_)
 498                 return;
 499
 500         LyXText const * t = bv_->text();
 501         int const line_height = defaultRowHeight();
 502
 503         // The new absolute coordinate
 504         int new_top_y = top_y() + lines * line_height;
 505
 506         // Restrict to a valid value
 507         new_top_y = std::min(t->height - 4 * line_height, new_top_y);
 508         new_top_y = std::max(0, new_top_y);
 509
 510         scrollDocView(new_top_y);
 511
 512         // Update the scrollbar.
 513         workarea().setScrollbarParams(t->height, top_y(), defaultRowHeight());
 514 }
 515
 516
 517 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 518                                          key_modifier::state state)
 519 {
 520         bv_->owner()->getLyXFunc().processKeySym(key, state);
 521
 522         /* This is perhaps a bit of a hack. When we move
 523          * around, or type, it's nice to be able to see
 524          * the cursor immediately after the keypress. So
 525          * we reset the toggle timeout and force the visibility
 526          * of the cursor. Note we cannot do this inside
 527          * dispatch() itself, because that's called recursively.
 528          */
 529         if (available()) {
 530                 cursor_timeout.restart();
 531                 screen().showCursor(*bv_);
 532         }
 533 }
 534
 535
 536 void BufferView::Pimpl::selectionRequested()
 537 {
 538         static string sel;
 539
 540         if (!available())
 541                 return;
 542
 543         LCursor & cur = bv_->cursor();
 544
 545         if (!cur.selection()) {
 546                 xsel_cache_.set = false;
 547                 return;
 548         }
 549
 550         if (!xsel_cache_.set ||
 551             cur.cursor_.back() != xsel_cache_.cursor ||
 552             cur.anchor_.back() != xsel_cache_.anchor)
 553         {
 554                 xsel_cache_.cursor = cur.cursor_.back();
 555                 xsel_cache_.anchor = cur.anchor_.back();
 556                 xsel_cache_.set = cur.selection();
 557                 sel = bv_->getLyXText()->selectionAsString(*bv_->buffer(), false);
 558                 if (!sel.empty())
 559                         workarea().putClipboard(sel);
 560         }
 561 }
 562
 563
 564 void BufferView::Pimpl::selectionLost()
 565 {
 566         if (available()) {
 567                 screen().hideCursor();
 568                 bv_->cursor().clearSelection();
 569                 xsel_cache_.set = false;
 570         }
 571 }
 572
 573
 574 void BufferView::Pimpl::workAreaResize()
 575 {
 576         static int work_area_width;
 577         static int work_area_height;
 578
 579         bool const widthChange = workarea().workWidth() != work_area_width;
 580         bool const heightChange = workarea().workHeight() != work_area_height;
 581
 582         // update from work area
 583         work_area_width = workarea().workWidth();
 584         work_area_height = workarea().workHeight();
 585
 586         if (buffer_ != 0) {
 587                 if (widthChange) {
 588                         // The visible LyXView need a resize
 589                         resizeCurrentBuffer();
 590                 }
 591         }
 592
 593         if (widthChange || heightChange)
 594                 update();
 595
 596         // always make sure that the scrollbar is sane.
 597         updateScrollbar();
 598         owner_->updateLayoutChoice();
 599 }
 600
 601
 602 void BufferView::Pimpl::update()
 603 {
 604         //lyxerr << "BufferView::update()" << endl;
 605         // fix cursor coordinate cache in case something went wrong
 606
 607         // check needed to survive LyX startup
 608         if (bv_->getLyXText()) {
 609                 // update all 'visible' paragraphs
 610                 ParagraphList::iterator beg;
 611                 ParagraphList::iterator end;
 612                 getParsInRange(buffer_->paragraphs(),
 613                                top_y(), top_y() + workarea().workHeight(),
 614                                beg, end);
 615                 bv_->text()->redoParagraphs(beg, end);
 616                 updateScrollbar();
 617         }
 618         screen().redraw(*bv_);
 619 }
 620
 621
 622 // Callback for cursor timer
 623 void BufferView::Pimpl::cursorToggle()
 624 {
 625         if (!buffer_) {
 626                 cursor_timeout.restart();
 627                 return;
 628         }
 629
 630         screen().toggleCursor(*bv_);
 631         cursor_timeout.restart();
 632 }
 633
 634
 635 bool BufferView::Pimpl::available() const
 636 {
 637         return buffer_ && bv_->text();
 638 }
 639
 640
 641 Change const BufferView::Pimpl::getCurrentChange()
 642 {
 643         if (!bv_->buffer()->params().tracking_changes)
 644                 return Change(Change::UNCHANGED);
 645
 646         LyXText * text = bv_->getLyXText();
 647         LCursor & cur = bv_->cursor();
 648
 649         if (!cur.selection())
 650                 return Change(Change::UNCHANGED);
 651
 652         return text->getPar(cur.selBegin())
 653                 ->lookupChangeFull(cur.selBegin().pos());
 654 }
 655
 656
 657 void BufferView::Pimpl::savePosition(unsigned int i)
 658 {
 659         if (i >= saved_positions_num)
 660                 return;
 661         saved_positions[i] = Position(buffer_->fileName(),
 662                                       bv_->text()->cursorPar()->id(),
 663                                       bv_->text()->cursor().pos());
 664         if (i > 0)
 665                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 666 }
 667
 668
 669 void BufferView::Pimpl::restorePosition(unsigned int i)
 670 {
 671         if (i >= saved_positions_num)
 672                 return;
 673
 674         string const fname = saved_positions[i].filename;
 675
 676         bv_->cursor().clearSelection();
 677
 678         if (fname != buffer_->fileName()) {
 679                 Buffer * b = 0;
 680                 if (bufferlist.exists(fname))
 681                         b = bufferlist.getBuffer(fname);
 682                 else {
 683                         b = bufferlist.newBuffer(fname);
 684                         ::loadLyXFile(b, fname); // don't ask, just load it
 685                 }
 686                 if (b)
 687                         buffer(b);
 688         }
 689
 690         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 691         if (par == buffer_->par_iterator_end())
 692                 return;
 693
 694         bv_->text()->setCursor(par.pit(),
 695                              min(par->size(), saved_positions[i].par_pos));
 696
 697         if (i > 0)
 698                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 699 }
 700
 701
 702 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 703 {
 704         return i < saved_positions_num && !saved_positions[i].filename.empty();
 705 }
 706
 707
 708 void BufferView::Pimpl::switchKeyMap()
 709 {
 710         if (!lyxrc.rtl_support)
 711                 return;
 712
 713         Intl & intl = owner_->getIntl();
 714         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 715                 if (intl.keymap == Intl::PRIMARY)
 716                         intl.KeyMapSec();
 717         } else {
 718                 if (intl.keymap == Intl::SECONDARY)
 719                         intl.KeyMapPrim();
 720         }
 721 }
 722
 723
 724 void BufferView::Pimpl::center()
 725 {
 726         LyXText * text = bv_->text();
 727
 728         bv_->cursor().clearSelection();
 729         int const half_height = workarea().workHeight() / 2;
 730         int new_y = std::max(0, text->cursorY() - half_height);
 731
 732         // FIXME: look at this comment again ...
 733         // This updates top_y() but means the fitCursor() call
 734         // from the update(FITCUR) doesn't realise that we might
 735         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 736         // the scrollbar to be updated as it should, so we have
 737         // to do it manually. Any operation that does a center()
 738         // and also might have moved top_y() must make sure to call
 739         // updateScrollbar() currently. Never mind that this is a
 740         // pretty obfuscated way of updating t->top_y()
 741         top_y(new_y);
 742 }
 743
 744
 745 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 746 {
 747         workarea().putClipboard(stuff);
 748 }
 749
 750
 751 InsetBase * BufferView::Pimpl::getInsetByCode(InsetBase::Code code)
 752 {
 753 #if 0
 754         CursorSlice cursor = bv_->getLyXText()->cursor;
 755         Buffer::inset_iterator it =
 756                 find_if(Buffer::inset_iterator(
 757                         cursorPar(), cursor().pos()),
 758                         buffer_->inset_iterator_end(),
 759                         lyx::compare_memfun(&Inset::lyxCode, code));
 760         return it != buffer_->inset_iterator_end() ? (*it) : 0;
 761 #else
 762         // Ok, this is a little bit too brute force but it
 763         // should work for now. Better infrastructure is coming. (Lgb)
 764
 765         Buffer * b = bv_->buffer();
 766         LyXText * text = bv_->getLyXText();
 767
 768         Buffer::inset_iterator beg = b->inset_iterator_begin();
 769         Buffer::inset_iterator end = b->inset_iterator_end();
 770
 771         bool cursor_par_seen = false;
 772
 773         for (; beg != end; ++beg) {
 774                 if (beg.getPar() == text->cursorPar()) {
 775                         cursor_par_seen = true;
 776                 }
 777                 if (cursor_par_seen) {
 778                         if (beg.getPar() == text->cursorPar()
 779                             && beg.getPos() >= text->cursor().pos()) {
 780                                 break;
 781                         } else if (beg.getPar() != text->cursorPar()) {
 782                                 break;
 783                         }
 784                 }
 785
 786         }
 787         if (beg != end) {
 788                 // Now find the first inset that matches code.
 789                 for (; beg != end; ++beg) {
 790                         if (beg->lyxCode() == code) {
 791                                 return &(*beg);
 792                         }
 793                 }
 794         }
 795         return 0;
 796 #endif
 797 }
 798
 799
 800 void BufferView::Pimpl::MenuInsertLyXFile(string const & filen)
 801 {
 802         string filename = filen;
 803
 804         if (filename.empty()) {
 805                 // Launch a file browser
 806                 string initpath = lyxrc.document_path;
 807
 808                 if (available()) {
 809                         string const trypath = owner_->buffer()->filePath();
 810                         // If directory is writeable, use this as default.
 811                         if (IsDirWriteable(trypath))
 812                                 initpath = trypath;
 813                 }
 814
 815                 FileDialog fileDlg(_("Select LyX document to insert"),
 816                         LFUN_FILE_INSERT,
 817                         make_pair(string(_("Documents|#o#O")),
 818                                   string(lyxrc.document_path)),
 819                         make_pair(string(_("Examples|#E#e")),
 820                                   string(AddPath(system_lyxdir(), "examples"))));
 821
 822                 FileDialog::Result result =
 823                         fileDlg.open(initpath,
 824                                      FileFilterList(_("LyX Documents (*.lyx)")),
 825                                      string());
 826
 827                 if (result.first == FileDialog::Later)
 828                         return;
 829
 830                 filename = result.second;
 831
 832                 // check selected filename
 833                 if (filename.empty()) {
 834                         owner_->message(_("Canceled."));
 835                         return;
 836                 }
 837         }
 838
 839         // get absolute path of file and add ".lyx" to the filename if
 840         // necessary
 841         filename = FileSearch(string(), filename, "lyx");
 842
 843         string const disp_fn = MakeDisplayPath(filename);
 844         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 845         if (bv_->insertLyXFile(filename))
 846                 owner_->message(bformat(_("Document %1$s inserted."),
 847                                         disp_fn));
 848         else
 849                 owner_->message(bformat(_("Could not insert document %1$s"),
 850                                         disp_fn));
 851 }
 852
 853
 854 void BufferView::Pimpl::trackChanges()
 855 {
 856         Buffer * buf(bv_->buffer());
 857         bool const tracking(buf->params().tracking_changes);
 858
 859         if (!tracking) {
 860                 ParIterator const end = buf->par_iterator_end();
 861                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 862                         it->trackChanges();
 863                 buf->params().tracking_changes = true;
 864
 865                 // we cannot allow undos beyond the freeze point
 866                 buf->undostack().clear();
 867         } else {
 868                 update();
 869                 bv_->text()->setCursor(0, 0);
 870 #warning changes FIXME
 871                 bool found = lyx::find::findNextChange(bv_);
 872                 if (found) {
 873                         owner_->getDialogs().show("changes");
 874                         return;
 875                 }
 876
 877                 ParIterator const end = buf->par_iterator_end();
 878                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 879                         it->untrackChanges();
 880                 buf->params().tracking_changes = false;
 881         }
 882
 883         buf->redostack().clear();
 884 }
 885
 886 #warning remove me
 887 CursorBase theTempCursor;
 888
 889 namespace {
 890
 891         InsetBase * insetFromCoords(BufferView * bv, int x, int y)
 892         {
 893                 lyxerr << "insetFromCoords" << endl;
 894                 InsetBase * inset = 0;
 895                 theTempCursor.clear();
 896                 LyXText * text = bv->text();
 897 #warning FIXME
 898 #if 0
 899                 while (true) {
 900                         InsetBase * const inset_hit = text->checkInsetHit(x, y);
 901                         if (!inset_hit) {
 902                                 lyxerr << "no further inset hit" << endl;
 903                                 break;
 904                         }
 905                         inset = inset_hit;
 906                         if (!inset->descendable()) {
 907                                 lyxerr << "not descendable" << endl;
 908                                 break;
 909                         }
 910                         int const cell = inset->getCell(x, y + bv->top_y());
 911                         if (cell == -1)
 912                                 break;
 913                         text = inset_hit->getText(cell);
 914                         lyxerr << "Hit inset: " << inset << " at x: " << x
 915                                 << " text: " << text << " y: " << y << endl;
 916                         theTempCursor.push_back(CursorSlice(inset));
 917                 }
 918 #endif
 919                 //lyxerr << "theTempCursor: " << theTempCursor << endl;
 920                 return inset;
 921         }
 922
 923 }
 924
 925
 926 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd)
 927 {
 928         LCursor & cur = bv_->cursor();
 929         switch (cmd.action) {
 930         case LFUN_MOUSE_MOTION: {
 931                 if (!available())
 932                         return false;
 933                 FuncRequest cmd1 = cmd;
 934                 InsetBase * inset = cur.inset();
 935                 DispatchResult res;
 936                 if (inset) {
 937                         cmd1.x -= inset->x();
 938                         cmd1.y -= inset->y();
 939                         res = inset->dispatch(cur, cmd1);
 940                 } else {
 941                         cmd1.y += bv_->top_y();
 942                         res = cur.innerText()->dispatch(cur, cmd1);
 943                 }
 944
 945                 if (bv_->fitCursor() || res.update()) {
 946                         bv_->update();
 947                         cur.updatePos();
 948                 }
 949
 950                 return true;
 951         }
 952
 953         case LFUN_MOUSE_PRESS:
 954         case LFUN_MOUSE_RELEASE:
 955         case LFUN_MOUSE_DOUBLE:
 956         case LFUN_MOUSE_TRIPLE: {
 957                 // We pass those directly to the Bufferview, since
 958                 // otherwise selection handling breaks down
 959
 960                 // Doesn't go through lyxfunc, so we need to update
 961                 // the layout choice etc. ourselves
 962
 963                 // e.g. Qt mouse press when no buffer
 964                 if (!available())
 965                         return false;
 966
 967                 screen().hideCursor();
 968
 969                 // either the inset under the cursor or the surrounding LyXText will
 970                 // handle this event.
 971
 972                 // built temporary path to inset
 973                 InsetBase * inset = insetFromCoords(bv_, cmd.x, cmd.y);
 974                 DispatchResult res;
 975
 976                 // try to dispatch to that inset
 977                 if (inset) {
 978                         FuncRequest cmd2 = cmd;
 979                         lyxerr << "dispatching action " << cmd2.action
 980                                << " to inset " << inset << endl;
 981                         cmd2.x -= inset->x();
 982                         cmd2.y -= inset->y();
 983                         res = inset->dispatch(cur, cmd2);
 984                         if (res.update()) {
 985                                 bv_->update();
 986                                 cur.updatePos();
 987                         }
 988                         res.update(false);
 989                         switch (res.val()) {
 990                                 case FINISHED:
 991                                 case FINISHED_RIGHT:
 992                                 case FINISHED_UP:
 993                                 case FINISHED_DOWN:
 994                                         theTempCursor.pop_back();
 995                                         cur.cursor_ = theTempCursor;
 996                                         cur.innerText()
 997                                                 ->setCursorFromCoordinates(cmd.x, top_y() + cmd.y);
 998                                         if (bv_->fitCursor())
 999                                                 bv_->update();
1000                                         return true;
1001                                 default:
1002                                         lyxerr << "not dispatched by inner inset val: " << res.val() << endl;
1003                                         break;
1004                         }
1005                 }
1006
1007                 // otherwise set cursor to surrounding LyXText
1008                 if (!res.dispatched()) {
1009                         //lyxerr << "temp cursor is: " << theTempCursor << endl;
1010                         //lyxerr << "dispatching " << cmd
1011                          //      << " to surrounding LyXText "
1012                           //     << theTempCursor.innerText() << endl;
1013                         cur.cursor_ = theTempCursor;
1014                         FuncRequest cmd1 = cmd;
1015                         cmd1.y += bv_->top_y();
1016                         res = cur.innerText()->dispatch(cur, cmd1);
1017                         if (bv_->fitCursor() || res.update())
1018                                 bv_->update();
1019
1020                         //return DispatchResult(true, true);
1021                 }
1022                 // see workAreaKeyPress
1023                 cursor_timeout.restart();
1024                 screen().showCursor(*bv_);
1025
1026                 // skip these when selecting
1027                 if (cmd.action != LFUN_MOUSE_MOTION) {
1028                         owner_->updateLayoutChoice();
1029                         owner_->updateToolbar();
1030                 }
1031
1032                 // slight hack: this is only called currently when we
1033                 // clicked somewhere, so we force through the display
1034                 // of the new status here.
1035                 owner_->clearMessage();
1036                 return true;
1037         }
1038
1039         default:
1040                 owner_->dispatch(cmd);
1041                 return true;
1042         }
1043 }
1044
1045
1046 bool BufferView::Pimpl::dispatch(FuncRequest const & ev)
1047 {
1048         // Make sure that the cached BufferView is correct.
1049         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
1050                 << " action[" << ev.action << ']'
1051                 << " arg[" << ev.argument << ']'
1052                 << " x[" << ev.x << ']'
1053                 << " y[" << ev.y << ']'
1054                 << " button[" << ev.button() << ']'
1055                 << endl;
1056
1057         LyXTextClass const & tclass = buffer_->params().getLyXTextClass();
1058         LCursor & cur = bv_->cursor();
1059
1060         switch (ev.action) {
1061
1062         case LFUN_SCROLL_INSET:
1063                 // this is not handled here as this function is only active
1064                 // if we have a locking_inset and that one is (or contains)
1065                 // a tabular-inset
1066                 break;
1067
1068         case LFUN_FILE_INSERT:
1069                 MenuInsertLyXFile(ev.argument);
1070                 break;
1071
1072         case LFUN_FILE_INSERT_ASCII_PARA:
1073                 InsertAsciiFile(bv_, ev.argument, true);
1074                 break;
1075
1076         case LFUN_FILE_INSERT_ASCII:
1077                 InsertAsciiFile(bv_, ev.argument, false);
1078                 break;
1079
1080         case LFUN_FONT_STATE:
1081                 owner_->getLyXFunc().setMessage(currentState(bv_));
1082                 break;
1083
1084         case LFUN_INSERT_LABEL: {
1085                 // Try and generate a valid label
1086                 string const contents = ev.argument.empty() ?
1087                         getPossibleLabel(*bv_) : ev.argument;
1088                 InsetCommandParams icp("label", contents);
1089                 string data = InsetCommandMailer::params2string("label", icp);
1090                 owner_->getDialogs().show("label", data, 0);
1091                 break;
1092         }
1093
1094         case LFUN_BOOKMARK_SAVE:
1095                 savePosition(strToUnsignedInt(ev.argument));
1096                 break;
1097
1098         case LFUN_BOOKMARK_GOTO:
1099                 restorePosition(strToUnsignedInt(ev.argument));
1100                 break;
1101
1102         case LFUN_REF_GOTO: {
1103                 string label = ev.argument;
1104                 if (label.empty()) {
1105                         InsetRef * inset =
1106                                 static_cast<InsetRef*>(getInsetByCode(InsetBase::REF_CODE));
1107                         if (inset) {
1108                                 label = inset->getContents();
1109                                 savePosition(0);
1110                         }
1111                 }
1112
1113                 if (!label.empty())
1114                         bv_->gotoLabel(label);
1115         }
1116         break;
1117
1118         // --- accented characters ---------------------------
1119
1120         case LFUN_UMLAUT:
1121         case LFUN_CIRCUMFLEX:
1122         case LFUN_GRAVE:
1123         case LFUN_ACUTE:
1124         case LFUN_TILDE:
1125         case LFUN_CEDILLA:
1126         case LFUN_MACRON:
1127         case LFUN_DOT:
1128         case LFUN_UNDERDOT:
1129         case LFUN_UNDERBAR:
1130         case LFUN_CARON:
1131         case LFUN_SPECIAL_CARON:
1132         case LFUN_BREVE:
1133         case LFUN_TIE:
1134         case LFUN_HUNG_UMLAUT:
1135         case LFUN_CIRCLE:
1136         case LFUN_OGONEK:
1137                 if (ev.argument.empty()) {
1138                         // As always...
1139                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1140                 } else {
1141                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1142                         owner_->getIntl().getTransManager()
1143                                 .TranslateAndInsert(ev.argument[0], bv_->getLyXText());
1144                         update();
1145                 }
1146                 break;
1147
1148         case LFUN_MATH_MACRO:
1149         case LFUN_MATH_DELIM:
1150         case LFUN_INSERT_MATRIX:
1151         case LFUN_INSERT_MATH:
1152         case LFUN_MATH_IMPORT_SELECTION: // Imports LaTeX from the X selection
1153         case LFUN_MATH_DISPLAY:          // Open or create a displayed math inset
1154         case LFUN_MATH_MODE:             // Open or create an inlined math inset
1155                 mathDispatch(cur, ev);
1156                 break;
1157
1158         case LFUN_INSET_INSERT: {
1159                 // Same as above.
1160                 BOOST_ASSERT(false);
1161                 InsetBase * inset = createInset(bv_, ev);
1162                 if (!inset || !insertInset(inset))
1163                         delete inset;
1164                 break;
1165         }
1166
1167         case LFUN_FLOAT_LIST:
1168                 if (tclass.floats().typeExist(ev.argument)) {
1169                         InsetBase * inset = new InsetFloatList(ev.argument);
1170                         if (!insertInset(inset, tclass.defaultLayoutName()))
1171                                 delete inset;
1172                 } else {
1173                         lyxerr << "Non-existent float type: "
1174                                << ev.argument << endl;
1175                 }
1176                 break;
1177
1178         case LFUN_LAYOUT_PARAGRAPH: {
1179                 string data;
1180                 params2string(*bv_->getLyXText()->cursorPar(), data);
1181                 data = "show\n" + data;
1182                 bv_->owner()->getDialogs().show("paragraph", data);
1183                 break;
1184         }
1185
1186         case LFUN_PARAGRAPH_UPDATE:
1187                 updateParagraphDialog();
1188                 break;
1189
1190         case LFUN_PARAGRAPH_APPLY:
1191                 setParagraphParams(*bv_, ev.argument);
1192                 break;
1193
1194         case LFUN_THESAURUS_ENTRY: {
1195                 string arg = ev.argument;
1196
1197                 if (arg.empty()) {
1198                         arg = bv_->getLyXText()->selectionAsString(*buffer_,
1199                                                                    false);
1200
1201                         // FIXME
1202                         if (arg.size() > 100 || arg.empty()) {
1203                                 // Get word or selection
1204                                 bv_->getLyXText()->selectWordWhenUnderCursor(lyx::WHOLE_WORD);
1205                                 arg = bv_->getLyXText()->selectionAsString(*buffer_, false);
1206                                 // FIXME: where is getLyXText()->unselect(bv_) ?
1207                         }
1208                 }
1209
1210                 bv_->owner()->getDialogs().show("thesaurus", arg);
1211                 break;
1212         }
1213
1214         case LFUN_TRACK_CHANGES:
1215                 trackChanges();
1216                 break;
1217
1218         case LFUN_MERGE_CHANGES:
1219                 owner_->getDialogs().show("changes");
1220                 break;
1221
1222         case LFUN_ACCEPT_ALL_CHANGES: {
1223                 bv_->text()->setCursor(0, 0);
1224 #warning FIXME changes
1225                 while (lyx::find::findNextChange(bv_))
1226                         bv_->getLyXText()->acceptChange();
1227                 update();
1228                 break;
1229         }
1230
1231         case LFUN_REJECT_ALL_CHANGES: {
1232                 bv_->text()->setCursor(0, 0);
1233 #warning FIXME changes
1234                 while (lyx::find::findNextChange(bv_))
1235                         bv_->getLyXText()->rejectChange();
1236                 update();
1237                 break;
1238         }
1239
1240         case LFUN_ACCEPT_CHANGE: {
1241                 bv_->getLyXText()->acceptChange();
1242                 update();
1243                 break;
1244         }
1245
1246         case LFUN_REJECT_CHANGE: {
1247                 bv_->getLyXText()->rejectChange();
1248                 update();
1249                 break;
1250         }
1251
1252         case LFUN_WORD_FIND:
1253                 lyx::find::find(bv_, ev);
1254                 break;
1255
1256         case LFUN_WORD_REPLACE:
1257                 lyx::find::replace(bv_, ev);
1258                 break;
1259
1260         case LFUN_MARK_OFF:
1261                 cur.clearSelection();
1262                 bv_->update();
1263                 cur.resetAnchor();
1264                 ev.message(N_("Mark off"));
1265                 break;
1266
1267         case LFUN_MARK_ON:
1268                 cur.clearSelection();
1269                 cur.mark() = true;
1270                 bv_->update();
1271                 cur.resetAnchor();
1272                 ev.message(N_("Mark on"));
1273                 break;
1274
1275         case LFUN_SETMARK:
1276                 cur.clearSelection();
1277                 if (cur.mark()) {
1278                         ev.message(N_("Mark removed"));
1279                 } else {
1280                         cur.mark() = true;
1281                         ev.message(N_("Mark set"));
1282                 }
1283                 cur.resetAnchor();
1284                 bv_->update();
1285                 break;
1286
1287         case LFUN_UNKNOWN_ACTION:
1288                 ev.errorMessage(N_("Unknown function!"));
1289                 break;
1290
1291         default:
1292                 return cur.dispatch(ev).dispatched();
1293         } // end of switch
1294
1295         return true;
1296 }
1297
1298
1299 bool BufferView::Pimpl::insertInset(InsetBase * inset, string const & lout)
1300 {
1301         // not quite sure if we want this...
1302         bv_->text()->recUndo(bv_->text()->cursor().par());
1303         freezeUndo();
1304
1305         bv_->cursor().clearSelection();
1306         if (!lout.empty()) {
1307                 bv_->text()->breakParagraph(bv_->buffer()->paragraphs());
1308
1309                 if (!bv_->text()->cursorPar()->empty()) {
1310                         bv_->text()->cursorLeft(bv_);
1311                         bv_->text()->breakParagraph(bv_->buffer()->paragraphs());
1312                 }
1313
1314                 string lres = lout;
1315                 LyXTextClass const & tclass = buffer_->params().getLyXTextClass();
1316                 bool hasLayout = tclass.hasLayout(lres);
1317
1318                 bv_->text()->setLayout(hasLayout ? lres : tclass.defaultLayoutName());
1319                 bv_->text()->setParagraph(Spacing(), LYX_ALIGN_LAYOUT, string(), 0);
1320         }
1321         bv_->cursor().innerText()->insertInset(inset);
1322         unFreezeUndo();
1323         return true;
1324 }
1325
1326
1327 bool BufferView::Pimpl::ChangeInsets(InsetBase::Code code,
1328                                      string const & from, string const & to)
1329 {
1330         bool need_update = false;
1331         CursorSlice cur = bv_->text()->cursor();
1332
1333         ParIterator end = bv_->buffer()->par_iterator_end();
1334         for (ParIterator it = bv_->buffer()->par_iterator_begin();
1335              it != end; ++it) {
1336                 bool changed_inset = false;
1337                 for (InsetList::iterator it2 = it->insetlist.begin();
1338                      it2 != it->insetlist.end(); ++it2) {
1339                         if (it2->inset->lyxCode() == code) {
1340                                 InsetCommand * inset = static_cast<InsetCommand *>(it2->inset);
1341                                 if (inset->getContents() == from) {
1342                                         inset->setContents(to);
1343                                         changed_inset = true;
1344                                 }
1345                         }
1346                 }
1347                 if (changed_inset) {
1348                         need_update = true;
1349
1350                         // FIXME
1351
1352                         // The test it.size() == 1 was needed to prevent crashes.
1353                         // How to set the cursor correctly when it.size() > 1 ??
1354                         if (it.size() == 1) {
1355                                 bv_->text()->setCursorIntern(bv_->text()->parOffset(it.pit()), 0);
1356                                 bv_->text()->redoParagraph(bv_->text()->cursorPar());
1357                         }
1358                 }
1359         }
1360         bv_->text()->setCursorIntern(cur.par(), cur.pos());
1361         return need_update;
1362 }
1363
1364
1365 void BufferView::Pimpl::updateParagraphDialog()
1366 {
1367         if (!bv_->owner()->getDialogs().visible("paragraph"))
1368                 return;
1369         CursorSlice const & cur = bv_->cursor().innerTextSlice();
1370         LyXText * text = bv_->cursor().innerText();
1371         Paragraph const & par = *text->getPar(cur.par());
1372         string data;
1373         params2string(par, data);
1374
1375         // Will the paragraph accept changes from the dialog?
1376         InsetBase * const inset = cur.inset();
1377         bool const accept =
1378                 !(inset && inset->forceDefaultParagraphs(inset));
1379
1380         data = "update " + tostr(accept) + '\n' + data;
1381         bv_->owner()->getDialogs().update("paragraph", data);
1382 }