src/BufferView_pimpl.C

   1 /**
   2  * \file BufferView_pimpl.C
   3  * Copyright 2002 the LyX Team
   4  * Read the file COPYING
   5  *
   6  * \author various
   7  */
   8
   9 #include <config.h>
  10
  11 #include "BufferView_pimpl.h"
  12 #include "bufferlist.h"
  13 #include "bufferview_funcs.h"
  14 #include "lfuns.h"
  15 #include "debug.h"
  16 #include "factory.h"
  17 #include "FloatList.h"
  18 #include "funcrequest.h"
  19 #include "gettext.h"
  20 #include "intl.h"
  21 #include "iterators.h"
  22 #include "lyx_cb.h" // added for Dispatch functions
  23 #include "lyx_main.h"
  24 #include "lyxfind.h"
  25 #include "lyxfunc.h"
  26 #include "lyxtext.h"
  27 #include "lyxrc.h"
  28 #include "lyxrow.h"
  29 #include "paragraph.h"
  30 #include "ParagraphParameters.h"
  31 #include "TextCache.h"
  32 #include "undo_funcs.h"
  33
  34 #include "insets/insetfloatlist.h"
  35 #include "insets/insetgraphics.h"
  36 #include "insets/insetinclude.h"
  37 #include "insets/insetref.h"
  38 #include "insets/insettext.h"
  39
  40 #include "frontends/Alert.h"
  41 #include "frontends/Dialogs.h"
  42 #include "frontends/FileDialog.h"
  43 #include "frontends/LyXView.h"
  44 #include "frontends/LyXScreenFactory.h"
  45 #include "frontends/mouse_state.h"
  46 #include "frontends/screen.h"
  47 #include "frontends/WorkArea.h"
  48 #include "frontends/WorkAreaFactory.h"
  49
  50 #include "mathed/formulabase.h"
  51
  52 #include "graphics/Previews.h"
  53
  54 #include "support/LAssert.h"
  55 #include "support/lstrings.h"
  56 #include "support/filetools.h"
  57
  58 #include <boost/bind.hpp>
  59 #include <boost/signals/connection.hpp>
  60 #include "support/BoostFormat.h"
  61
  62 #include <unistd.h>
  63 #include <sys/wait.h>
  64
  65
  66 using std::vector;
  67 using std::find_if;
  68 using std::find;
  69 using std::pair;
  70 using std::endl;
  71 using std::make_pair;
  72 using std::min;
  73
  74 using lyx::pos_type;
  75
  76 extern BufferList bufferlist;
  77
  78
  79 namespace {
  80
  81 unsigned int const saved_positions_num = 20;
  82
  83 // All the below connection objects are needed because of a bug in some
  84 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
  85 // to these connections we avoid a segfault upon startup, and also at exit.
  86 // (Lgb)
  87
  88 boost::signals::connection dispatchcon;
  89 boost::signals::connection timecon;
  90 boost::signals::connection doccon;
  91 boost::signals::connection resizecon;
  92 boost::signals::connection kpresscon;
  93 boost::signals::connection selectioncon;
  94 boost::signals::connection lostcon;
  95
  96
  97 } // anon namespace
  98
  99
 100 BufferView::Pimpl::Pimpl(BufferView * bv, LyXView * owner,
 101              int xpos, int ypos, int width, int height)
 102         : bv_(bv), owner_(owner), buffer_(0), cursor_timeout(400),
 103           using_xterm_cursor(false)
 104 {
 105         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 106         screen_.reset(LyXScreenFactory::create(workarea()));
 107
 108         // Setup the signals
 109         doccon = workarea().scrollDocView
 110                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 111         resizecon = workarea().workAreaResize
 112                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 113         dispatchcon = workarea().dispatch
 114                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 115         kpresscon = workarea().workAreaKeyPress
 116                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 117         selectioncon = workarea().selectionRequested
 118                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 119         lostcon = workarea().selectionLost
 120                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 121
 122         timecon = cursor_timeout.timeout
 123                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 124         cursor_timeout.start();
 125         saved_positions.resize(saved_positions_num);
 126 }
 127
 128
 129 WorkArea & BufferView::Pimpl::workarea() const
 130 {
 131         return *workarea_.get();
 132 }
 133
 134
 135 LyXScreen & BufferView::Pimpl::screen() const
 136 {
 137         return *screen_.get();
 138 }
 139
 140
 141 Painter & BufferView::Pimpl::painter() const
 142 {
 143         return workarea().getPainter();
 144 }
 145
 146
 147 void BufferView::Pimpl::buffer(Buffer * b)
 148 {
 149         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 150                             << b << ')' << endl;
 151         if (buffer_) {
 152                 buffer_->delUser(bv_);
 153
 154                 // Put the old text into the TextCache, but
 155                 // only if the buffer is still loaded.
 156                 // Also set the owner of the test to 0
 157                 //              bv_->text->owner(0);
 158                 textcache.add(buffer_, workarea().workWidth(), bv_->text);
 159                 if (lyxerr.debugging())
 160                         textcache.show(lyxerr, "BufferView::buffer");
 161
 162                 bv_->text = 0;
 163         }
 164
 165         // set current buffer
 166         buffer_ = b;
 167
 168         // if we're quitting lyx, don't bother updating stuff
 169         if (quitting)
 170                 return;
 171
 172         // if we are closing the buffer, use the first buffer as current
 173         if (!buffer_) {
 174                 buffer_ = bufferlist.first();
 175         }
 176
 177         if (buffer_) {
 178                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 179                 buffer_->addUser(bv_);
 180
 181                 // If we don't have a text object for this, we make one
 182                 if (bv_->text == 0) {
 183                         resizeCurrentBuffer();
 184                 }
 185
 186                 // FIXME: needed when ?
 187                 bv_->text->top_y(screen().topCursorVisible(bv_->text->cursor, bv_->text->top_y()));
 188
 189                 // Similarly, buffer-dependent dialogs should be updated or
 190                 // hidden. This should go here because some dialogs (eg ToC)
 191                 // require bv_->text.
 192                 owner_->getDialogs().updateBufferDependent(true);
 193         } else {
 194                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 195                 owner_->getDialogs().hideBufferDependent();
 196
 197                 // Also remove all remaining text's from the testcache.
 198                 // (there should not be any!) (if there is any it is a
 199                 // bug!)
 200                 if (lyxerr.debugging())
 201                         textcache.show(lyxerr, "buffer delete all");
 202                 textcache.clear();
 203         }
 204
 205         repaint();
 206         updateScrollbar();
 207         owner_->updateMenubar();
 208         owner_->updateToolbar();
 209         owner_->updateLayoutChoice();
 210         owner_->updateWindowTitle();
 211
 212         if (grfx::Previews::activated() && buffer_)
 213                 grfx::Previews::get().generateBufferPreviews(*buffer_);
 214 }
 215
 216
 217 bool BufferView::Pimpl::fitCursor()
 218 {
 219         bool ret;
 220
 221         if (bv_->theLockingInset()) {
 222                 bv_->theLockingInset()->fitInsetCursor(bv_);
 223                 ret = true;
 224         } else {
 225                 ret = screen().fitCursor(bv_->text, bv_);
 226         }
 227
 228         dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
 229
 230         // We need to always update, in case we did a
 231         // paste and we stayed anchored to a row, but
 232         // the actual height of the doc changed ...
 233         updateScrollbar();
 234         return ret;
 235 }
 236
 237
 238 void BufferView::Pimpl::redoCurrentBuffer()
 239 {
 240         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 241         if (buffer_ && bv_->text) {
 242                 resizeCurrentBuffer();
 243                 updateScrollbar();
 244                 owner_->updateLayoutChoice();
 245                 repaint();
 246         }
 247 }
 248
 249
 250 int BufferView::Pimpl::resizeCurrentBuffer()
 251 {
 252         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 253
 254         Paragraph * par = 0;
 255         Paragraph * selstartpar = 0;
 256         Paragraph * selendpar = 0;
 257         UpdatableInset * the_locking_inset = 0;
 258
 259         pos_type pos = 0;
 260         pos_type selstartpos = 0;
 261         pos_type selendpos = 0;
 262         bool selection = false;
 263         bool mark_set  = false;
 264
 265         owner_->busy(true);
 266
 267         owner_->message(_("Formatting document..."));
 268
 269         if (bv_->text) {
 270                 par = bv_->text->cursor.par();
 271                 pos = bv_->text->cursor.pos();
 272                 selstartpar = bv_->text->selection.start.par();
 273                 selstartpos = bv_->text->selection.start.pos();
 274                 selendpar = bv_->text->selection.end.par();
 275                 selendpos = bv_->text->selection.end.pos();
 276                 selection = bv_->text->selection.set();
 277                 mark_set = bv_->text->selection.mark();
 278                 the_locking_inset = bv_->theLockingInset();
 279                 buffer_->resizeInsets(bv_);
 280                 // I don't think the delete and new are necessary here we just could
 281                 // call only init! (Jug 20020419)
 282                 delete bv_->text;
 283                 bv_->text = new LyXText(bv_);
 284                 bv_->text->init(bv_);
 285         } else {
 286                 // See if we have a text in TextCache that fits
 287                 // the new buffer_ with the correct width.
 288                 bv_->text = textcache.findFit(buffer_, workarea().workWidth());
 289                 if (bv_->text) {
 290                         if (lyxerr.debugging()) {
 291                                 lyxerr << "Found a LyXText that fits:\n";
 292                                 textcache.show(lyxerr, make_pair(buffer_, make_pair(workarea().workWidth(), bv_->text)));
 293                         }
 294                         // Set the owner of the newly found text
 295                         //      bv_->text->owner(bv_);
 296                         if (lyxerr.debugging())
 297                                 textcache.show(lyxerr, "resizeCurrentBuffer");
 298
 299                         buffer_->resizeInsets(bv_);
 300                 } else {
 301                         bv_->text = new LyXText(bv_);
 302                         bv_->text->init(bv_);
 303                         //buffer_->resizeInsets(bv_);
 304                 }
 305         }
 306
 307         if (par) {
 308                 bv_->text->selection.set(true);
 309                 // At this point just to avoid the Delete-Empty-Paragraph-
 310                 // Mechanism when setting the cursor.
 311                 bv_->text->selection.mark(mark_set);
 312                 if (selection) {
 313                         bv_->text->setCursor(selstartpar, selstartpos);
 314                         bv_->text->selection.cursor = bv_->text->cursor;
 315                         bv_->text->setCursor(selendpar, selendpos);
 316                         bv_->text->setSelection();
 317                         bv_->text->setCursor(par, pos);
 318                 } else {
 319                         bv_->text->setCursor(par, pos);
 320                         bv_->text->selection.cursor = bv_->text->cursor;
 321                         bv_->text->selection.set(false);
 322                 }
 323                 // remake the inset locking
 324                 bv_->theLockingInset(the_locking_inset);
 325         }
 326
 327         bv_->text->top_y(screen().topCursorVisible(bv_->text->cursor, bv_->text->top_y()));
 328
 329         switchKeyMap();
 330         owner_->busy(false);
 331
 332         updateScrollbar();
 333
 334         return 0;
 335 }
 336
 337
 338 void BufferView::Pimpl::repaint()
 339 {
 340         // Regenerate the screen.
 341         screen().redraw(bv_->text, bv_);
 342 }
 343
 344
 345 void BufferView::Pimpl::updateScrollbar()
 346 {
 347         if (!bv_->text) {
 348                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 349                 workarea().setScrollbarParams(0, 0, 0);
 350                 return;
 351         }
 352
 353         LyXText const & t = *bv_->text;
 354
 355         lyxerr[Debug::GUI] << "Updating scrollbar: h " << t.height << ", top_y() "
 356                 << t.top_y() << ", default height " << defaultRowHeight() << endl;
 357
 358         workarea().setScrollbarParams(t.height, t.top_y(), defaultRowHeight());
 359 }
 360
 361
 362 void BufferView::Pimpl::scrollDocView(int value)
 363 {
 364         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 365
 366         if (!buffer_)
 367                 return;
 368
 369         screen().draw(bv_->text, bv_, value);
 370
 371         if (!lyxrc.cursor_follows_scrollbar)
 372                 return;
 373
 374         LyXText * vbt = bv_->text;
 375
 376         int const height = defaultRowHeight();
 377         int const first = static_cast<int>((bv_->text->top_y() + height));
 378         int const last = static_cast<int>((bv_->text->top_y() + workarea().workHeight() - height));
 379
 380         if (vbt->cursor.y() < first)
 381                 vbt->setCursorFromCoordinates(0, first);
 382         else if (vbt->cursor.y() > last)
 383                 vbt->setCursorFromCoordinates(0, last);
 384
 385         owner_->updateLayoutChoice();
 386 }
 387
 388
 389 void BufferView::Pimpl::scroll(int lines)
 390 {
 391         if (!buffer_) {
 392                 return;
 393         }
 394
 395         LyXText const * t = bv_->text;
 396         int const line_height = defaultRowHeight();
 397
 398         // The new absolute coordinate
 399         int new_top_y = t->top_y() + lines * line_height;
 400
 401         // Restrict to a valid value
 402         new_top_y = std::min(t->height - 4 * line_height, new_top_y);
 403         new_top_y = std::max(0, new_top_y);
 404
 405         scrollDocView(new_top_y);
 406
 407         // Update the scrollbar.
 408         workarea().setScrollbarParams(t->height, t->top_y(), defaultRowHeight());
 409 }
 410
 411
 412 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 413                                          key_modifier::state state)
 414 {
 415         bv_->owner()->getLyXFunc().processKeySym(key, state);
 416 }
 417
 418
 419 void BufferView::Pimpl::selectionRequested()
 420 {
 421         static string sel;
 422
 423         if (!available())
 424                 return;
 425
 426         LyXText * text = bv_->getLyXText();
 427
 428         if (text->selection.set() &&
 429                 (!bv_->text->xsel_cache.set() ||
 430                  text->selection.start != bv_->text->xsel_cache.start ||
 431                  text->selection.end != bv_->text->xsel_cache.end))
 432         {
 433                 bv_->text->xsel_cache = text->selection;
 434                 sel = text->selectionAsString(bv_->buffer(), false);
 435         } else if (!text->selection.set()) {
 436                 sel = string();
 437                 bv_->text->xsel_cache.set(false);
 438         }
 439         if (!sel.empty()) {
 440                 workarea().putClipboard(sel);
 441         }
 442 }
 443
 444
 445 void BufferView::Pimpl::selectionLost()
 446 {
 447         if (available()) {
 448                 hideCursor();
 449                 toggleSelection();
 450                 bv_->getLyXText()->clearSelection();
 451                 showCursor();
 452                 bv_->text->xsel_cache.set(false);
 453         }
 454 }
 455
 456
 457 void BufferView::Pimpl::workAreaResize()
 458 {
 459         static int work_area_width;
 460         static int work_area_height;
 461
 462         bool const widthChange = workarea().workWidth() != work_area_width;
 463         bool const heightChange = workarea().workHeight() != work_area_height;
 464
 465         // update from work area
 466         work_area_width = workarea().workWidth();
 467         work_area_height = workarea().workHeight();
 468
 469         if (buffer_ != 0) {
 470                 if (widthChange) {
 471                         // The visible LyXView need a resize
 472                         resizeCurrentBuffer();
 473
 474                         // Remove all texts from the textcache
 475                         // This is not _really_ what we want to do. What
 476                         // we really want to do is to delete in textcache
 477                         // that does not have a BufferView with matching
 478                         // width, but as long as we have only one BufferView
 479                         // deleting all gives the same result.
 480                         if (lyxerr.debugging())
 481                                 textcache.show(lyxerr, "Expose delete all");
 482                         textcache.clear();
 483                         // FIXME: this is already done in resizeCurrentBuffer() ??
 484                         buffer_->resizeInsets(bv_);
 485                 } else if (heightChange) {
 486                         // fitCursor() ensures we don't jump back
 487                         // to the start of the document on vertical
 488                         // resize
 489                         fitCursor();
 490                 }
 491         }
 492
 493         if (widthChange || heightChange) {
 494                 repaint();
 495         }
 496
 497         // always make sure that the scrollbar is sane.
 498         updateScrollbar();
 499         owner_->updateLayoutChoice();
 500         return;
 501 }
 502
 503
 504 void BufferView::Pimpl::update()
 505 {
 506         if (!bv_->theLockingInset() || !bv_->theLockingInset()->nodraw()) {
 507                 screen().update(*bv_);
 508                 bv_->text->clearPaint();
 509         }
 510 }
 511
 512
 513 void BufferView::Pimpl::update(LyXText * text, BufferView::UpdateCodes f)
 514 {
 515         if (!text->selection.set() && (f & SELECT)) {
 516                 text->selection.cursor = text->cursor;
 517         }
 518
 519         text->fullRebreak();
 520
 521         if (text->inset_owner) {
 522                 text->inset_owner->setUpdateStatus(bv_, InsetText::NONE);
 523                 updateInset(text->inset_owner);
 524         } else {
 525                 update();
 526         }
 527 }
 528
 529
 530 void BufferView::Pimpl::update(BufferView::UpdateCodes f)
 531 {
 532         LyXText * text = bv_->text;
 533
 534         if (!text->selection.set() && (f & SELECT)) {
 535                 text->selection.cursor = text->cursor;
 536         }
 537
 538         text->fullRebreak();
 539
 540         if (text->inset_owner) {
 541                 text->inset_owner->setUpdateStatus(bv_, InsetText::NONE);
 542                 updateInset(text->inset_owner);
 543         } else {
 544                 update();
 545         }
 546 }
 547
 548
 549 // Callback for cursor timer
 550 void BufferView::Pimpl::cursorToggle()
 551 {
 552         if (!buffer_) {
 553                 cursor_timeout.restart();
 554                 return;
 555         }
 556
 557         if (!bv_->theLockingInset()) {
 558                 screen().cursorToggle(bv_);
 559         } else {
 560                 bv_->theLockingInset()->toggleInsetCursor(bv_);
 561         }
 562
 563         cursor_timeout.restart();
 564 }
 565
 566
 567 bool BufferView::Pimpl::available() const
 568 {
 569         if (buffer_ && bv_->text)
 570                 return true;
 571         return false;
 572 }
 573
 574
 575 Change const BufferView::Pimpl::getCurrentChange()
 576 {
 577         if (!bv_->buffer()->params.tracking_changes)
 578                 return Change(Change::UNCHANGED);
 579
 580         LyXText * t(bv_->getLyXText());
 581
 582         if (!t->selection.set())
 583                 return Change(Change::UNCHANGED);
 584
 585         LyXCursor const & cur(t->selection.start);
 586         return cur.par()->lookupChangeFull(cur.pos());
 587 }
 588
 589
 590 void BufferView::Pimpl::beforeChange(LyXText * text)
 591 {
 592         toggleSelection();
 593         text->clearSelection();
 594 }
 595
 596
 597 void BufferView::Pimpl::savePosition(unsigned int i)
 598 {
 599         if (i >= saved_positions_num)
 600                 return;
 601         saved_positions[i] = Position(buffer_->fileName(),
 602                                       bv_->text->cursor.par()->id(),
 603                                       bv_->text->cursor.pos());
 604         if (i > 0) {
 605                 ostringstream str;
 606 #if USE_BOOST_FORMAT
 607                 str << boost::format(_("Saved bookmark %1$d")) % i;
 608 #else
 609                 str << _("Saved bookmark ") << i;
 610 #endif
 611                 owner_->message(STRCONV(str.str()));
 612         }
 613 }
 614
 615
 616 void BufferView::Pimpl::restorePosition(unsigned int i)
 617 {
 618         if (i >= saved_positions_num)
 619                 return;
 620
 621         string const fname = saved_positions[i].filename;
 622
 623         beforeChange(bv_->text);
 624
 625         if (fname != buffer_->fileName()) {
 626                 Buffer * b = bufferlist.exists(fname) ?
 627                         bufferlist.getBuffer(fname) :
 628                         bufferlist.loadLyXFile(fname); // don't ask, just load it
 629                 if (b != 0) buffer(b);
 630         }
 631
 632         Paragraph * par = buffer_->getParFromID(saved_positions[i].par_id);
 633         if (!par)
 634                 return;
 635
 636         bv_->text->setCursor(par,
 637                              min(par->size(), saved_positions[i].par_pos));
 638
 639         update(BufferView::SELECT);
 640         if (i > 0) {
 641                 ostringstream str;
 642 #if USE_BOOST_FORMAT
 643                 str << boost::format(_("Moved to bookmark %1$d")) % i;
 644 #else
 645                 str << _("Moved to bookmark ") << i;
 646 #endif
 647                 owner_->message(STRCONV(str.str()));
 648         }
 649 }
 650
 651
 652 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 653 {
 654         if (i >= saved_positions_num)
 655                 return false;
 656
 657         return !saved_positions[i].filename.empty();
 658 }
 659
 660
 661 void BufferView::Pimpl::switchKeyMap()
 662 {
 663         if (!lyxrc.rtl_support)
 664                 return;
 665
 666         LyXText * text = bv_->getLyXText();
 667         if (text->real_current_font.isRightToLeft()
 668             && !(bv_->theLockingInset()
 669                  && bv_->theLockingInset()->lyxCode() == Inset::ERT_CODE))
 670         {
 671                 if (owner_->getIntl().keymap == Intl::PRIMARY)
 672                         owner_->getIntl().KeyMapSec();
 673         } else {
 674                 if (owner_->getIntl().keymap == Intl::SECONDARY)
 675                         owner_->getIntl().KeyMapPrim();
 676         }
 677 }
 678
 679
 680 void BufferView::Pimpl::insetUnlock()
 681 {
 682         if (bv_->theLockingInset()) {
 683                 bv_->theLockingInset()->insetUnlock(bv_);
 684                 bv_->theLockingInset(0);
 685                 finishUndo();
 686         }
 687 }
 688
 689
 690 void BufferView::Pimpl::showCursor()
 691 {
 692         if (bv_->theLockingInset())
 693                 bv_->theLockingInset()->showInsetCursor(bv_);
 694         else
 695                 screen().showCursor(bv_->text, bv_);
 696 }
 697
 698
 699 void BufferView::Pimpl::hideCursor()
 700 {
 701         if (!bv_->theLockingInset())
 702                 screen().hideCursor();
 703 }
 704
 705
 706 void BufferView::Pimpl::toggleSelection(bool b)
 707 {
 708         if (bv_->theLockingInset())
 709                 bv_->theLockingInset()->toggleSelection(bv_, b);
 710         screen().toggleSelection(bv_->text, bv_, b);
 711 }
 712
 713
 714 void BufferView::Pimpl::toggleToggle()
 715 {
 716         screen().toggleToggle(bv_->text, bv_);
 717 }
 718
 719
 720 void BufferView::Pimpl::center()
 721 {
 722         LyXText * t = bv_->text;
 723
 724         beforeChange(t);
 725         int const half_height = workarea().workHeight() / 2;
 726         int new_y = 0;
 727
 728         if (t->cursor.y() > half_height) {
 729                 new_y = t->cursor.y() - half_height;
 730         }
 731
 732         // FIXME: look at this comment again ...
 733
 734         // FIXME: can we do this w/o calling screen directly ?
 735         // This updates top_y() but means the fitCursor() call
 736         // from the update(FITCUR) doesn't realise that we might
 737         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 738         // the scrollbar to be updated as it should, so we have
 739         // to do it manually. Any operation that does a center()
 740         // and also might have moved top_y() must make sure to call
 741         // updateScrollbar() currently. Never mind that this is a
 742         // pretty obfuscated way of updating t->top_y()
 743         screen().draw(t, bv_, new_y);
 744
 745         update(BufferView::SELECT);
 746 }
 747
 748
 749 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 750 {
 751         workarea().putClipboard(stuff);
 752 }
 753
 754
 755 /*
 756  * Dispatch functions for actions which can be valid for BufferView->text
 757  * and/or InsetText->text!!!
 758  */
 759
 760
 761 Inset * BufferView::Pimpl::getInsetByCode(Inset::Code code)
 762 {
 763 #if 0
 764         LyXCursor cursor = bv_->getLyXText()->cursor;
 765         Buffer::inset_iterator it =
 766                 find_if(Buffer::inset_iterator(
 767                         cursor.par(), cursor.pos()),
 768                         buffer_->inset_iterator_end(),
 769                         lyx::compare_memfun(&Inset::lyxCode, code));
 770         return it != buffer_->inset_iterator_end() ? (*it) : 0;
 771 #else
 772         // Ok, this is a little bit too brute force but it
 773         // should work for now. Better infrastructure is comming. (Lgb)
 774
 775         Buffer * b = bv_->buffer();
 776         LyXCursor cursor = bv_->getLyXText()->cursor;
 777
 778         Buffer::inset_iterator beg = b->inset_iterator_begin();
 779         Buffer::inset_iterator end = b->inset_iterator_end();
 780
 781         bool cursor_par_seen = false;
 782
 783         for (; beg != end; ++beg) {
 784                 if (beg.getPar() == cursor.par()) {
 785                         cursor_par_seen = true;
 786                 }
 787                 if (cursor_par_seen) {
 788                         if (beg.getPar() == cursor.par()
 789                             && beg.getPos() >= cursor.pos()) {
 790                                 break;
 791                         } else if (beg.getPar() != cursor.par()) {
 792                                 break;
 793                         }
 794                 }
 795
 796         }
 797         if (beg != end) {
 798                 // Now find the first inset that matches code.
 799                 for (; beg != end; ++beg) {
 800                         if (beg->lyxCode() == code) {
 801                                 return &(*beg);
 802                         }
 803                 }
 804         }
 805         return 0;
 806 #endif
 807 }
 808
 809
 810 void BufferView::Pimpl::MenuInsertLyXFile(string const & filen)
 811 {
 812         string filename = filen;
 813
 814         if (filename.empty()) {
 815                 // Launch a file browser
 816                 string initpath = lyxrc.document_path;
 817
 818                 if (available()) {
 819                         string const trypath = owner_->buffer()->filePath();
 820                         // If directory is writeable, use this as default.
 821                         if (IsDirWriteable(trypath))
 822                                 initpath = trypath;
 823                 }
 824
 825                 FileDialog fileDlg(_("Select LyX document to insert"),
 826                         LFUN_FILE_INSERT,
 827                         make_pair(string(_("Documents|#o#O")),
 828                                   string(lyxrc.document_path)),
 829                         make_pair(string(_("Examples|#E#e")),
 830                                   string(AddPath(system_lyxdir, "examples"))));
 831
 832                 FileDialog::Result result =
 833                         fileDlg.open(initpath,
 834                                        _("*.lyx| LyX Documents (*.lyx)"));
 835
 836                 if (result.first == FileDialog::Later)
 837                         return;
 838
 839                 filename = result.second;
 840
 841                 // check selected filename
 842                 if (filename.empty()) {
 843                         owner_->message(_("Canceled."));
 844                         return;
 845                 }
 846         }
 847
 848         // get absolute path of file and add ".lyx" to the filename if
 849         // necessary
 850         filename = FileSearch(string(), filename, "lyx");
 851
 852         string const disp_fn(MakeDisplayPath(filename));
 853
 854         ostringstream s1;
 855 #if USE_BOOST_FORMAT
 856         s1 << boost::format(_("Inserting document %1$s...")) % disp_fn;
 857 #else
 858         s1 << _("Inserting document ") << disp_fn << _("...");
 859 #endif
 860         owner_->message(STRCONV(s1.str()));
 861         bool const res = bv_->insertLyXFile(filename);
 862         if (res) {
 863                 ostringstream str;
 864 #if USE_BOOST_FORMAT
 865                 str << boost::format(_("Document %1$s inserted.")) % disp_fn;
 866 #else
 867                 str << _("Document ") << disp_fn << _(" inserted.");
 868 #endif
 869                 owner_->message(STRCONV(str.str()));
 870         } else {
 871                 ostringstream str;
 872 #if USE_BOOST_FORMAT
 873                 str << boost::format(_("Could not insert document %1$s")) % disp_fn;
 874 #else
 875                 str << _("Could not insert document ") << disp_fn;
 876 #endif
 877                 owner_->message(STRCONV(str.str()));
 878         }
 879 }
 880
 881
 882 void BufferView::Pimpl::trackChanges()
 883 {
 884         Buffer * buf(bv_->buffer());
 885         bool const tracking(buf->params.tracking_changes);
 886
 887         if (!tracking) {
 888                 ParIterator const end = buf->par_iterator_end();
 889                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it) {
 890                         (*it)->trackChanges();
 891                 }
 892                 buf->params.tracking_changes = true;
 893
 894                 // we cannot allow undos beyond the freeze point
 895                 buf->undostack.clear();
 896         } else {
 897                 update(BufferView::SELECT);
 898                 bv_->text->setCursor(&(*buf->paragraphs.begin()), 0);
 899 #warning changes FIXME
 900                 //moveCursorUpdate(false);
 901
 902                 bool found = lyxfind::findNextChange(bv_);
 903                 if (found) {
 904                         owner_->getDialogs().show("changes");
 905                         return;
 906                 }
 907
 908                 ParIterator const end = buf->par_iterator_end();
 909                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it) {
 910                         (*it)->untrackChanges();
 911                 }
 912                 buf->params.tracking_changes = false;
 913         }
 914
 915         buf->redostack.clear();
 916 }
 917
 918
 919 // Doesn't go through lyxfunc, so we need to update the
 920 // layout choice etc. ourselves
 921 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & ev_in)
 922 {
 923         // e.g. Qt mouse press when no buffer
 924         if (!available())
 925                 return false;
 926
 927         bool const res = dispatch(ev_in);
 928
 929         bv_->owner()->updateLayoutChoice();
 930         bv_->fitCursor();
 931
 932         return res;
 933 }
 934
 935
 936 bool BufferView::Pimpl::dispatch(FuncRequest const & ev_in)
 937 {
 938         // Make sure that the cached BufferView is correct.
 939         FuncRequest ev = ev_in;
 940         ev.setView(bv_);
 941
 942         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
 943                 << " action[" << ev.action << ']'
 944                 << " arg[" << ev.argument << ']'
 945                 << " x[" << ev.x << ']'
 946                 << " y[" << ev.y << ']'
 947                 << " button[" << ev.button() << ']'
 948                 << endl;
 949
 950         LyXTextClass const & tclass = buffer_->params.getLyXTextClass();
 951
 952         switch (ev.action) {
 953
 954         case LFUN_SCROLL_INSET:
 955                 // this is not handled here as this function is only active
 956                 // if we have a locking_inset and that one is (or contains)
 957                 // a tabular-inset
 958                 break;
 959
 960         case LFUN_LAYOUT_COPY:
 961                 bv_->copyEnvironment();
 962                 break;
 963
 964         case LFUN_LAYOUT_PASTE:
 965                 bv_->pasteEnvironment();
 966                 switchKeyMap();
 967                 break;
 968
 969         case LFUN_FILE_INSERT:
 970                 MenuInsertLyXFile(ev.argument);
 971                 break;
 972
 973         case LFUN_FILE_INSERT_ASCII_PARA:
 974                 InsertAsciiFile(bv_, ev.argument, true);
 975                 break;
 976
 977         case LFUN_FILE_INSERT_ASCII:
 978                 InsertAsciiFile(bv_, ev.argument, false);
 979                 break;
 980
 981         case LFUN_LANGUAGE:
 982                 lang(bv_, ev.argument);
 983                 switchKeyMap();
 984                 owner_->view_state_changed();
 985                 break;
 986
 987         case LFUN_EMPH:
 988                 emph(bv_);
 989                 owner_->view_state_changed();
 990                 break;
 991
 992         case LFUN_BOLD:
 993                 bold(bv_);
 994                 owner_->view_state_changed();
 995                 break;
 996
 997         case LFUN_NOUN:
 998                 noun(bv_);
 999                 owner_->view_state_changed();
1000                 break;
1001
1002         case LFUN_CODE:
1003                 code(bv_);
1004                 owner_->view_state_changed();
1005                 break;
1006
1007         case LFUN_SANS:
1008                 sans(bv_);
1009                 owner_->view_state_changed();
1010                 break;
1011
1012         case LFUN_ROMAN:
1013                 roman(bv_);
1014                 owner_->view_state_changed();
1015                 break;
1016
1017         case LFUN_DEFAULT:
1018                 styleReset(bv_);
1019                 owner_->view_state_changed();
1020                 break;
1021
1022         case LFUN_UNDERLINE:
1023                 underline(bv_);
1024                 owner_->view_state_changed();
1025                 break;
1026
1027         case LFUN_FONT_SIZE:
1028                 fontSize(bv_, ev.argument);
1029                 owner_->view_state_changed();
1030                 break;
1031
1032         case LFUN_FONT_STATE:
1033                 owner_->getLyXFunc().setMessage(currentState(bv_));
1034                 break;
1035
1036         case LFUN_INSERT_LABEL: {
1037                 // Try and generate a valid label
1038                 string const contents = ev.argument.empty() ?
1039                         getPossibleLabel(*bv_) : ev.argument;
1040                 InsetCommandParams icp("label", contents);
1041                 string data = InsetCommandMailer::params2string("label", icp);
1042                 owner_->getDialogs().show("label", data, 0);
1043         }
1044         break;
1045
1046         case LFUN_BOOKMARK_SAVE:
1047                 savePosition(strToUnsignedInt(ev.argument));
1048                 break;
1049
1050         case LFUN_BOOKMARK_GOTO:
1051                 restorePosition(strToUnsignedInt(ev.argument));
1052                 break;
1053
1054         case LFUN_REF_GOTO: {
1055                 string label = ev.argument;
1056                 if (label.empty()) {
1057                         InsetRef * inset =
1058                                 static_cast<InsetRef*>(getInsetByCode(Inset::REF_CODE));
1059                         if (inset) {
1060                                 label = inset->getContents();
1061                                 savePosition(0);
1062                         }
1063                 }
1064
1065                 if (!label.empty())
1066                         bv_->gotoLabel(label);
1067         }
1068         break;
1069
1070         // --- accented characters ---------------------------
1071
1072         case LFUN_UMLAUT:
1073         case LFUN_CIRCUMFLEX:
1074         case LFUN_GRAVE:
1075         case LFUN_ACUTE:
1076         case LFUN_TILDE:
1077         case LFUN_CEDILLA:
1078         case LFUN_MACRON:
1079         case LFUN_DOT:
1080         case LFUN_UNDERDOT:
1081         case LFUN_UNDERBAR:
1082         case LFUN_CARON:
1083         case LFUN_SPECIAL_CARON:
1084         case LFUN_BREVE:
1085         case LFUN_TIE:
1086         case LFUN_HUNG_UMLAUT:
1087         case LFUN_CIRCLE:
1088         case LFUN_OGONEK:
1089                 if (ev.argument.empty()) {
1090                         // As always...
1091                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1092                 } else {
1093                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1094                         owner_->getIntl().getTransManager()
1095                                 .TranslateAndInsert(ev.argument[0], bv_->getLyXText());
1096                         update(bv_->getLyXText(), BufferView::SELECT);
1097                 }
1098                 break;
1099
1100         case LFUN_MATH_MACRO:
1101         case LFUN_MATH_DELIM:
1102         case LFUN_INSERT_MATRIX:
1103         case LFUN_INSERT_MATH:
1104         case LFUN_MATH_IMPORT_SELECTION: // Imports LaTeX from the X selection
1105         case LFUN_MATH_DISPLAY:          // Open or create a displayed math inset
1106         case LFUN_MATH_MODE:             // Open or create an inlined math inset
1107                 mathDispatch(ev);
1108                 break;
1109
1110         case LFUN_INSET_APPLY: {
1111                 string const name = ev.getArg(0);
1112
1113                 InsetBase * inset = owner_->getDialogs().getOpenInset(name);
1114                 if (inset) {
1115                         // This works both for 'original' and 'mathed' insets.
1116                         // Note that the localDispatch performs updateInset
1117                         // also.
1118                         FuncRequest fr(bv_, LFUN_INSET_MODIFY, ev.argument);
1119                         inset->localDispatch(fr);
1120                 } else {
1121                         FuncRequest fr(bv_, LFUN_INSET_INSERT, ev.argument);
1122                         dispatch(fr);
1123                 }
1124         }
1125         break;
1126
1127         case LFUN_INSET_INSERT: {
1128                 Inset * inset = createInset(ev);
1129                 if (inset && insertInset(inset)) {
1130                         updateInset(inset);
1131
1132                         string const name = ev.getArg(0);
1133                         if (name == "bibitem") {
1134                                 // We need to do a redraw because the maximum
1135                                 // InsetBibitem width could have changed
1136 #warning please check you mean repaint() not update(),
1137 #warning and whether the repaint() is needed at all
1138                                 bv_->repaint();
1139                                 bv_->fitCursor();
1140                         }
1141                 } else {
1142                         delete inset;
1143                 }
1144         }
1145         break;
1146
1147         case LFUN_FLOAT_LIST:
1148                 if (tclass.floats().typeExist(ev.argument)) {
1149                         Inset * inset = new InsetFloatList(ev.argument);
1150                         if (!insertInset(inset, tclass.defaultLayoutName()))
1151                                 delete inset;
1152                 } else {
1153                         lyxerr << "Non-existent float type: "
1154                                << ev.argument << endl;
1155                 }
1156                 break;
1157
1158         case LFUN_LAYOUT_PARAGRAPH: {
1159                 Paragraph const * par = bv_->getLyXText()->cursor.par();
1160                 if (!par)
1161                         break;
1162
1163                 string data;
1164                 params2string(*par, data);
1165
1166                 data = "show\n" + data;
1167                 bv_->owner()->getDialogs().show("paragraph", data);
1168                 break;
1169         }
1170
1171         case LFUN_PARAGRAPH_UPDATE: {
1172                 Paragraph const * par = bv_->getLyXText()->cursor.par();
1173                 if (!par)
1174                         break;
1175
1176                 string data;
1177                 params2string(*par, data);
1178
1179                 // Will the paragraph accept changes from the dialog?
1180                 Inset * const inset = par->inInset();
1181                 bool const accept =
1182                         !(inset && inset->forceDefaultParagraphs(inset));
1183
1184                 data = "update " + tostr(accept) + '\n' + data;
1185                 bv_->owner()->getDialogs().update("paragraph", data);
1186                 break;
1187         }
1188
1189         case LFUN_PARAGRAPH_APPLY:
1190                 setParagraphParams(*bv_, ev.argument);
1191                 break;
1192
1193         case LFUN_THESAURUS_ENTRY:
1194         {
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(LyXText::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         }
1212                 break;
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                 update(BufferView::SELECT);
1224                 bv_->text->setCursor(&(*bv_->buffer()->paragraphs.begin()), 0);
1225 #warning FIXME changes
1226                 //moveCursorUpdate(false);
1227
1228                 while (lyxfind::findNextChange(bv_)) {
1229                         bv_->getLyXText()->acceptChange();
1230                 }
1231                 update(BufferView::SELECT);
1232                 break;
1233         }
1234
1235         case LFUN_REJECT_ALL_CHANGES: {
1236                 update(BufferView::SELECT);
1237                 bv_->text->setCursor(&(*bv_->buffer()->paragraphs.begin()), 0);
1238 #warning FIXME changes
1239                 //moveCursorUpdate(false);
1240
1241                 while (lyxfind::findNextChange(bv_)) {
1242                         bv_->getLyXText()->rejectChange();
1243                 }
1244                 update(BufferView::SELECT);
1245                 break;
1246         }
1247
1248         case LFUN_ACCEPT_CHANGE: {
1249                 bv_->getLyXText()->acceptChange();
1250                 update(BufferView::SELECT);
1251                 break;
1252         }
1253
1254         case LFUN_REJECT_CHANGE: {
1255                 bv_->getLyXText()->rejectChange();
1256                 update(BufferView::SELECT);
1257                 break;
1258         }
1259
1260         case LFUN_UNKNOWN_ACTION:
1261                 ev.errorMessage(N_("Unknown function!"));
1262                 break;
1263
1264         default:
1265                 return bv_->getLyXText()->dispatch(FuncRequest(ev, bv_));
1266         } // end of switch
1267
1268         return true;
1269 }
1270
1271
1272 bool BufferView::Pimpl::insertInset(Inset * inset, string const & lout)
1273 {
1274         // if we are in a locking inset we should try to insert the
1275         // inset there otherwise this is a illegal function now
1276         if (bv_->theLockingInset()) {
1277                 if (bv_->theLockingInset()->insetAllowed(inset))
1278                         return bv_->theLockingInset()->insertInset(bv_, inset);
1279                 return false;
1280         }
1281
1282         // not quite sure if we want this...
1283         setCursorParUndo(bv_);
1284         freezeUndo();
1285
1286         beforeChange(bv_->text);
1287         if (!lout.empty()) {
1288                 update(BufferView::SELECT);
1289                 bv_->text->breakParagraph(bv_->buffer()->paragraphs);
1290                 update(BufferView::SELECT);
1291
1292                 if (!bv_->text->cursor.par()->empty()) {
1293                         bv_->text->cursorLeft(bv_);
1294
1295                         bv_->text->breakParagraph(bv_->buffer()->paragraphs);
1296                         update(BufferView::SELECT);
1297                 }
1298
1299                 string lres = lout;
1300                 LyXTextClass const & tclass =
1301                         buffer_->params.getLyXTextClass();
1302                 bool hasLayout = tclass.hasLayout(lres);
1303                 string lay = tclass.defaultLayoutName();
1304
1305                 if (hasLayout != false) {
1306                         // layout found
1307                         lay = lres;
1308                 } else {
1309                         // layout not fount using default
1310                         lay = tclass.defaultLayoutName();
1311                 }
1312
1313                 bv_->text->setLayout(lay);
1314
1315                 bv_->text->setParagraph(0, 0,
1316                                    0, 0,
1317                                    VSpace(VSpace::NONE), VSpace(VSpace::NONE),
1318                                    Spacing(),
1319                                    LYX_ALIGN_LAYOUT,
1320                                    string(),
1321                                    0);
1322                 update(BufferView::SELECT);
1323         }
1324
1325         bv_->text->insertInset(inset);
1326         update(BufferView::SELECT);
1327
1328         unFreezeUndo();
1329         return true;
1330 }
1331
1332
1333 void BufferView::Pimpl::updateInset(Inset * inset)
1334 {
1335         if (!inset || !available())
1336                 return;
1337
1338         // first check for locking insets
1339         if (bv_->theLockingInset()) {
1340                 if (bv_->theLockingInset() == inset) {
1341                         if (bv_->text->updateInset(inset)) {
1342                                 update();
1343                                 updateScrollbar();
1344                                 return;
1345                         }
1346                 } else if (bv_->theLockingInset()->updateInsetInInset(bv_, inset)) {
1347                         if (bv_->text->updateInset(bv_->theLockingInset())) {
1348                                 update();
1349                                 updateScrollbar();
1350                                 return;
1351                         }
1352                 }
1353         }
1354
1355         // then check if the inset is a top_level inset (has no owner)
1356         // if yes do the update as always otherwise we have to update the
1357         // toplevel inset where this inset is inside
1358         Inset * tl_inset = inset;
1359         while (tl_inset->owner())
1360                 tl_inset = tl_inset->owner();
1361         hideCursor();
1362         if (tl_inset == inset) {
1363                 update(BufferView::UPDATE);
1364                 if (bv_->text->updateInset(inset)) {
1365                         update(BufferView::SELECT);
1366                         return;
1367                 }
1368         } else if (static_cast<UpdatableInset *>(tl_inset)
1369                            ->updateInsetInInset(bv_, inset))
1370         {
1371                 if (bv_->text->updateInset(tl_inset)) {
1372                         update();
1373                         updateScrollbar();
1374                 }
1375         }
1376 }