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 "buffer.h"
  14 #include "bufferview_funcs.h"
  15 #include "lfuns.h"
  16 #include "debug.h"
  17 #include "factory.h"
  18 #include "FloatList.h"
  19 #include "funcrequest.h"
  20 #include "gettext.h"
  21 #include "intl.h"
  22 #include "iterators.h"
  23 #include "Lsstream.h"
  24 #include "lyx_cb.h" // added for Dispatch functions
  25 #include "lyx_main.h"
  26 #include "lyxfind.h"
  27 #include "lyxfunc.h"
  28 #include "lyxtext.h"
  29 #include "lyxrc.h"
  30 #include "lyxrow.h"
  31 #include "paragraph.h"
  32 #include "ParagraphParameters.h"
  33 #include "TextCache.h"
  34 #include "undo_funcs.h"
  35
  36 #include "insets/insetfloatlist.h"
  37 #include "insets/insetgraphics.h"
  38 #include "insets/insetinclude.h"
  39 #include "insets/insetref.h"
  40 #include "insets/insettext.h"
  41
  42 #include "frontends/Alert.h"
  43 #include "frontends/Dialogs.h"
  44 #include "frontends/FileDialog.h"
  45 #include "frontends/LyXView.h"
  46 #include "frontends/LyXScreenFactory.h"
  47 #include "frontends/mouse_state.h"
  48 #include "frontends/screen.h"
  49 #include "frontends/WorkArea.h"
  50 #include "frontends/WorkAreaFactory.h"
  51
  52 #include "mathed/formulabase.h"
  53
  54 #include "graphics/Previews.h"
  55
  56 #include "support/LAssert.h"
  57 #include "support/tostr.h"
  58 #include "support/filetools.h"
  59
  60 #include <boost/bind.hpp>
  61 #include <boost/signals/connection.hpp>
  62
  63 #include <unistd.h>
  64 #include <sys/wait.h>
  65
  66
  67 using std::vector;
  68 using std::find_if;
  69 using std::find;
  70 using std::pair;
  71 using std::endl;
  72 using std::make_pair;
  73 using std::min;
  74
  75 using lyx::pos_type;
  76 using namespace bv_funcs;
  77
  78 extern BufferList bufferlist;
  79
  80
  81 namespace {
  82
  83 unsigned int const saved_positions_num = 20;
  84
  85 // All the below connection objects are needed because of a bug in some
  86 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
  87 // to these connections we avoid a segfault upon startup, and also at exit.
  88 // (Lgb)
  89
  90 boost::signals::connection dispatchcon;
  91 boost::signals::connection timecon;
  92 boost::signals::connection doccon;
  93 boost::signals::connection resizecon;
  94 boost::signals::connection kpresscon;
  95 boost::signals::connection selectioncon;
  96 boost::signals::connection lostcon;
  97
  98
  99 } // anon namespace
 100
 101
 102 BufferView::Pimpl::Pimpl(BufferView * bv, LyXView * owner,
 103              int xpos, int ypos, int width, int height)
 104         : bv_(bv), owner_(owner), buffer_(0), cursor_timeout(400),
 105           using_xterm_cursor(false)
 106 {
 107         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 108         screen_.reset(LyXScreenFactory::create(workarea()));
 109
 110         // Setup the signals
 111         doccon = workarea().scrollDocView
 112                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 113         resizecon = workarea().workAreaResize
 114                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 115         dispatchcon = workarea().dispatch
 116                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 117         kpresscon = workarea().workAreaKeyPress
 118                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 119         selectioncon = workarea().selectionRequested
 120                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 121         lostcon = workarea().selectionLost
 122                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 123
 124         timecon = cursor_timeout.timeout
 125                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 126         cursor_timeout.start();
 127         saved_positions.resize(saved_positions_num);
 128 }
 129
 130
 131 WorkArea & BufferView::Pimpl::workarea() const
 132 {
 133         return *workarea_.get();
 134 }
 135
 136
 137 LyXScreen & BufferView::Pimpl::screen() const
 138 {
 139         return *screen_.get();
 140 }
 141
 142
 143 Painter & BufferView::Pimpl::painter() const
 144 {
 145         return workarea().getPainter();
 146 }
 147
 148
 149 void BufferView::Pimpl::buffer(Buffer * b)
 150 {
 151         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 152                             << b << ')' << endl;
 153         if (buffer_) {
 154                 buffer_->delUser(bv_);
 155
 156                 // Put the old text into the TextCache, but
 157                 // only if the buffer is still loaded.
 158                 // Also set the owner of the test to 0
 159                 //              bv_->text->owner(0);
 160                 textcache.add(buffer_, workarea().workWidth(), bv_->text);
 161                 if (lyxerr.debugging())
 162                         textcache.show(lyxerr, "BufferView::buffer");
 163
 164                 bv_->text = 0;
 165         }
 166
 167         // set current buffer
 168         buffer_ = b;
 169
 170         // if we're quitting lyx, don't bother updating stuff
 171         if (quitting)
 172                 return;
 173
 174         // if we are closing the buffer, use the first buffer as current
 175         if (!buffer_) {
 176                 buffer_ = bufferlist.first();
 177         }
 178
 179         if (buffer_) {
 180                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 181                 buffer_->addUser(bv_);
 182
 183                 // If we don't have a text object for this, we make one
 184                 if (bv_->text == 0) {
 185                         resizeCurrentBuffer();
 186                 }
 187
 188                 // FIXME: needed when ?
 189                 bv_->text->top_y(screen().topCursorVisible(bv_->text->cursor, bv_->text->top_y()));
 190
 191                 // Buffer-dependent dialogs should be updated or
 192                 // hidden. This should go here because some dialogs (eg ToC)
 193                 // require bv_->text.
 194                 owner_->getDialogs().updateBufferDependent(true);
 195         } else {
 196                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 197                 owner_->getDialogs().hideBufferDependent();
 198
 199                 // Also remove all remaining text's from the testcache.
 200                 // (there should not be any!) (if there is any it is a
 201                 // bug!)
 202                 if (lyxerr.debugging())
 203                         textcache.show(lyxerr, "buffer delete all");
 204                 textcache.clear();
 205         }
 206
 207         repaint();
 208         updateScrollbar();
 209         owner_->updateMenubar();
 210         owner_->updateToolbar();
 211         owner_->updateLayoutChoice();
 212         owner_->updateWindowTitle();
 213
 214         if (buffer_) {
 215                 // Don't forget to update the Layout
 216                 string const layoutname =
 217                         bv_->text->cursor.par()->layout()->name();
 218                 owner_->setLayout(layoutname);
 219         }
 220
 221         if (grfx::Previews::activated() && buffer_)
 222                 grfx::Previews::get().generateBufferPreviews(*buffer_);
 223 }
 224
 225
 226 bool BufferView::Pimpl::fitCursor()
 227 {
 228         bool ret;
 229
 230         if (bv_->theLockingInset()) {
 231                 bv_->theLockingInset()->fitInsetCursor(bv_);
 232                 ret = true;
 233         } else {
 234                 ret = screen().fitCursor(bv_->text, bv_);
 235         }
 236
 237         dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
 238
 239         // We need to always update, in case we did a
 240         // paste and we stayed anchored to a row, but
 241         // the actual height of the doc changed ...
 242         updateScrollbar();
 243         return ret;
 244 }
 245
 246
 247 void BufferView::Pimpl::redoCurrentBuffer()
 248 {
 249         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 250         if (buffer_ && bv_->text) {
 251                 resizeCurrentBuffer();
 252                 updateScrollbar();
 253                 owner_->updateLayoutChoice();
 254                 repaint();
 255         }
 256 }
 257
 258
 259 int BufferView::Pimpl::resizeCurrentBuffer()
 260 {
 261         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 262
 263         ParagraphList::iterator par;
 264         ParagraphList::iterator selstartpar;
 265         ParagraphList::iterator selendpar;
 266         UpdatableInset * the_locking_inset = 0;
 267
 268         pos_type pos = 0;
 269         pos_type selstartpos = 0;
 270         pos_type selendpos = 0;
 271         bool selection = false;
 272         bool mark_set  = false;
 273
 274         owner_->busy(true);
 275
 276         owner_->message(_("Formatting document..."));
 277
 278         if (bv_->text) {
 279                 par = bv_->text->cursor.par();
 280                 pos = bv_->text->cursor.pos();
 281                 selstartpar = bv_->text->selection.start.par();
 282                 selstartpos = bv_->text->selection.start.pos();
 283                 selendpar = bv_->text->selection.end.par();
 284                 selendpos = bv_->text->selection.end.pos();
 285                 selection = bv_->text->selection.set();
 286                 mark_set = bv_->text->selection.mark();
 287                 the_locking_inset = bv_->theLockingInset();
 288                 buffer_->resizeInsets(bv_);
 289                 // I don't think the delete and new are necessary here we just could
 290                 // call only init! (Jug 20020419)
 291                 delete bv_->text;
 292                 bv_->text = new LyXText(bv_);
 293                 bv_->text->init(bv_);
 294         } else {
 295                 // See if we have a text in TextCache that fits
 296                 // the new buffer_ with the correct width.
 297                 bv_->text = textcache.findFit(buffer_, workarea().workWidth());
 298                 if (bv_->text) {
 299                         if (lyxerr.debugging()) {
 300                                 lyxerr << "Found a LyXText that fits:\n";
 301                                 textcache.show(lyxerr, make_pair(buffer_, make_pair(workarea().workWidth(), bv_->text)));
 302                         }
 303                         // Set the owner of the newly found text
 304                         //      bv_->text->owner(bv_);
 305                         if (lyxerr.debugging())
 306                                 textcache.show(lyxerr, "resizeCurrentBuffer");
 307
 308                         buffer_->resizeInsets(bv_);
 309                 } else {
 310                         bv_->text = new LyXText(bv_);
 311                         bv_->text->init(bv_);
 312                         //buffer_->resizeInsets(bv_);
 313                 }
 314
 315                 par = bv_->text->ownerParagraphs().end();
 316                 selstartpar = bv_->text->ownerParagraphs().end();
 317                 selendpar = bv_->text->ownerParagraphs().end();
 318         }
 319
 320         if (par != bv_->text->ownerParagraphs().end()) {
 321                 bv_->text->selection.set(true);
 322                 // At this point just to avoid the Delete-Empty-Paragraph-
 323                 // Mechanism when setting the cursor.
 324                 bv_->text->selection.mark(mark_set);
 325                 if (selection) {
 326                         bv_->text->setCursor(selstartpar, selstartpos);
 327                         bv_->text->selection.cursor = bv_->text->cursor;
 328                         bv_->text->setCursor(selendpar, selendpos);
 329                         bv_->text->setSelection();
 330                         bv_->text->setCursor(par, pos);
 331                 } else {
 332                         bv_->text->setCursor(par, pos);
 333                         bv_->text->selection.cursor = bv_->text->cursor;
 334                         bv_->text->selection.set(false);
 335                 }
 336                 // remake the inset locking
 337                 bv_->theLockingInset(the_locking_inset);
 338         }
 339
 340         bv_->text->top_y(screen().topCursorVisible(bv_->text->cursor, bv_->text->top_y()));
 341
 342         switchKeyMap();
 343         owner_->busy(false);
 344
 345         // reset the "Formatting..." message
 346         owner_->clearMessage();
 347
 348         updateScrollbar();
 349
 350         return 0;
 351 }
 352
 353
 354 void BufferView::Pimpl::repaint()
 355 {
 356         // Regenerate the screen.
 357         screen().redraw(bv_->text, bv_);
 358 }
 359
 360
 361 void BufferView::Pimpl::updateScrollbar()
 362 {
 363         if (!bv_->text) {
 364                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 365                 workarea().setScrollbarParams(0, 0, 0);
 366                 return;
 367         }
 368
 369         LyXText const & t = *bv_->text;
 370
 371         lyxerr[Debug::GUI] << "Updating scrollbar: h " << t.height << ", top_y() "
 372                 << t.top_y() << ", default height " << defaultRowHeight() << endl;
 373
 374         workarea().setScrollbarParams(t.height, t.top_y(), defaultRowHeight());
 375 }
 376
 377
 378 void BufferView::Pimpl::scrollDocView(int value)
 379 {
 380         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 381
 382         if (!buffer_)
 383                 return;
 384
 385         screen().hideCursor();
 386
 387         screen().draw(bv_->text, bv_, value);
 388
 389         if (!lyxrc.cursor_follows_scrollbar)
 390                 return;
 391
 392         LyXText * vbt = bv_->text;
 393
 394         int const height = defaultRowHeight();
 395         int const first = static_cast<int>((bv_->text->top_y() + height));
 396         int const last = static_cast<int>((bv_->text->top_y() + workarea().workHeight() - height));
 397
 398         if (vbt->cursor.y() < first)
 399                 vbt->setCursorFromCoordinates(0, first);
 400         else if (vbt->cursor.y() > last)
 401                 vbt->setCursorFromCoordinates(0, last);
 402
 403         owner_->updateLayoutChoice();
 404 }
 405
 406
 407 void BufferView::Pimpl::scroll(int lines)
 408 {
 409         if (!buffer_) {
 410                 return;
 411         }
 412
 413         LyXText const * t = bv_->text;
 414         int const line_height = defaultRowHeight();
 415
 416         // The new absolute coordinate
 417         int new_top_y = t->top_y() + lines * line_height;
 418
 419         // Restrict to a valid value
 420         new_top_y = std::min(t->height - 4 * line_height, new_top_y);
 421         new_top_y = std::max(0, new_top_y);
 422
 423         scrollDocView(new_top_y);
 424
 425         // Update the scrollbar.
 426         workarea().setScrollbarParams(t->height, t->top_y(), defaultRowHeight());
 427 }
 428
 429
 430 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 431                                          key_modifier::state state)
 432 {
 433         bv_->owner()->getLyXFunc().processKeySym(key, state);
 434
 435         /* This is perhaps a bit of a hack. When we move
 436          * around, or type, it's nice to be able to see
 437          * the cursor immediately after the keypress. So
 438          * we reset the toggle timeout and force the visibility
 439          * of the cursor. Note we cannot do this inside
 440          * dispatch() itself, because that's called recursively.
 441          */
 442         if (available()) {
 443                 cursor_timeout.restart();
 444                 screen().showCursor(*bv_);
 445         }
 446 }
 447
 448
 449 void BufferView::Pimpl::selectionRequested()
 450 {
 451         static string sel;
 452
 453         if (!available())
 454                 return;
 455
 456         LyXText * text = bv_->getLyXText();
 457
 458         if (text->selection.set() &&
 459                 (!bv_->text->xsel_cache.set() ||
 460                  text->selection.start != bv_->text->xsel_cache.start ||
 461                  text->selection.end != bv_->text->xsel_cache.end))
 462         {
 463                 bv_->text->xsel_cache = text->selection;
 464                 sel = text->selectionAsString(bv_->buffer(), false);
 465         } else if (!text->selection.set()) {
 466                 sel = string();
 467                 bv_->text->xsel_cache.set(false);
 468         }
 469         if (!sel.empty()) {
 470                 workarea().putClipboard(sel);
 471         }
 472 }
 473
 474
 475 void BufferView::Pimpl::selectionLost()
 476 {
 477         if (available()) {
 478                 screen().hideCursor();
 479                 toggleSelection();
 480                 bv_->getLyXText()->clearSelection();
 481                 bv_->text->xsel_cache.set(false);
 482         }
 483 }
 484
 485
 486 void BufferView::Pimpl::workAreaResize()
 487 {
 488         static int work_area_width;
 489         static int work_area_height;
 490
 491         bool const widthChange = workarea().workWidth() != work_area_width;
 492         bool const heightChange = workarea().workHeight() != work_area_height;
 493
 494         // update from work area
 495         work_area_width = workarea().workWidth();
 496         work_area_height = workarea().workHeight();
 497
 498         if (buffer_ != 0) {
 499                 if (widthChange) {
 500                         // The visible LyXView need a resize
 501                         resizeCurrentBuffer();
 502
 503                         // Remove all texts from the textcache
 504                         // This is not _really_ what we want to do. What
 505                         // we really want to do is to delete in textcache
 506                         // that does not have a BufferView with matching
 507                         // width, but as long as we have only one BufferView
 508                         // deleting all gives the same result.
 509                         if (lyxerr.debugging())
 510                                 textcache.show(lyxerr, "Expose delete all");
 511                         textcache.clear();
 512                         // FIXME: this is already done in resizeCurrentBuffer() ??
 513                         buffer_->resizeInsets(bv_);
 514                 } else if (heightChange) {
 515                         // fitCursor() ensures we don't jump back
 516                         // to the start of the document on vertical
 517                         // resize
 518                         fitCursor();
 519                 }
 520         }
 521
 522         if (widthChange || heightChange) {
 523                 repaint();
 524         }
 525
 526         // always make sure that the scrollbar is sane.
 527         updateScrollbar();
 528         owner_->updateLayoutChoice();
 529         return;
 530 }
 531
 532
 533 void BufferView::Pimpl::update()
 534 {
 535         if (!bv_->theLockingInset() || !bv_->theLockingInset()->nodraw()) {
 536                 screen().update(*bv_);
 537                 bv_->text->clearPaint();
 538         }
 539 }
 540
 541
 542 void BufferView::Pimpl::update(LyXText * text, BufferView::UpdateCodes f)
 543 {
 544         if (!text->selection.set() && (f & SELECT)) {
 545                 text->selection.cursor = text->cursor;
 546         }
 547
 548         text->fullRebreak();
 549
 550         if (text->inset_owner) {
 551                 text->inset_owner->setUpdateStatus(bv_, InsetText::NONE);
 552                 updateInset(text->inset_owner);
 553         } else {
 554                 update();
 555         }
 556 }
 557
 558
 559 void BufferView::Pimpl::update(BufferView::UpdateCodes f)
 560 {
 561         LyXText * text = bv_->text;
 562
 563         if (!text->selection.set() && (f & SELECT)) {
 564                 text->selection.cursor = text->cursor;
 565         }
 566
 567         text->fullRebreak();
 568
 569         if (text->inset_owner) {
 570                 text->inset_owner->setUpdateStatus(bv_, InsetText::NONE);
 571                 updateInset(text->inset_owner);
 572         } else {
 573                 update();
 574         }
 575 }
 576
 577
 578 // Callback for cursor timer
 579 void BufferView::Pimpl::cursorToggle()
 580 {
 581         if (!buffer_) {
 582                 cursor_timeout.restart();
 583                 return;
 584         }
 585
 586         screen().toggleCursor(*bv_);
 587
 588         cursor_timeout.restart();
 589 }
 590
 591
 592 bool BufferView::Pimpl::available() const
 593 {
 594         if (buffer_ && bv_->text)
 595                 return true;
 596         return false;
 597 }
 598
 599
 600 Change const BufferView::Pimpl::getCurrentChange()
 601 {
 602         if (!bv_->buffer()->params.tracking_changes)
 603                 return Change(Change::UNCHANGED);
 604
 605         LyXText * t(bv_->getLyXText());
 606
 607         if (!t->selection.set())
 608                 return Change(Change::UNCHANGED);
 609
 610         LyXCursor const & cur(t->selection.start);
 611         return cur.par()->lookupChangeFull(cur.pos());
 612 }
 613
 614
 615 void BufferView::Pimpl::beforeChange(LyXText * text)
 616 {
 617         toggleSelection();
 618         text->clearSelection();
 619 }
 620
 621
 622 void BufferView::Pimpl::savePosition(unsigned int i)
 623 {
 624         if (i >= saved_positions_num)
 625                 return;
 626         saved_positions[i] = Position(buffer_->fileName(),
 627                                       bv_->text->cursor.par()->id(),
 628                                       bv_->text->cursor.pos());
 629         if (i > 0)
 630                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 631 }
 632
 633
 634 void BufferView::Pimpl::restorePosition(unsigned int i)
 635 {
 636         if (i >= saved_positions_num)
 637                 return;
 638
 639         string const fname = saved_positions[i].filename;
 640
 641         beforeChange(bv_->text);
 642
 643         if (fname != buffer_->fileName()) {
 644                 Buffer * b = bufferlist.exists(fname) ?
 645                         bufferlist.getBuffer(fname) :
 646                         bufferlist.loadLyXFile(fname); // don't ask, just load it
 647                 if (b != 0) buffer(b);
 648         }
 649
 650         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 651         if (par == buffer_->par_iterator_end())
 652                 return;
 653
 654         bv_->text->setCursor(*par,
 655                              min((*par)->size(), saved_positions[i].par_pos));
 656
 657         update(BufferView::SELECT);
 658         if (i > 0)
 659                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 660 }
 661
 662
 663 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 664 {
 665         if (i >= saved_positions_num)
 666                 return false;
 667
 668         return !saved_positions[i].filename.empty();
 669 }
 670
 671
 672 void BufferView::Pimpl::switchKeyMap()
 673 {
 674         if (!lyxrc.rtl_support)
 675                 return;
 676
 677         LyXText * text = bv_->getLyXText();
 678         if (text->real_current_font.isRightToLeft()
 679             && !(bv_->theLockingInset()
 680                  && bv_->theLockingInset()->lyxCode() == Inset::ERT_CODE))
 681         {
 682                 if (owner_->getIntl().keymap == Intl::PRIMARY)
 683                         owner_->getIntl().KeyMapSec();
 684         } else {
 685                 if (owner_->getIntl().keymap == Intl::SECONDARY)
 686                         owner_->getIntl().KeyMapPrim();
 687         }
 688 }
 689
 690
 691 void BufferView::Pimpl::insetUnlock()
 692 {
 693         if (bv_->theLockingInset()) {
 694                 bv_->theLockingInset()->insetUnlock(bv_);
 695                 bv_->theLockingInset(0);
 696                 finishUndo();
 697         }
 698 }
 699
 700
 701 void BufferView::Pimpl::toggleSelection(bool b)
 702 {
 703         if (bv_->theLockingInset())
 704                 bv_->theLockingInset()->toggleSelection(bv_, b);
 705         screen().toggleSelection(bv_->text, bv_, b);
 706 }
 707
 708
 709 void BufferView::Pimpl::toggleToggle()
 710 {
 711         screen().toggleToggle(bv_->text, bv_);
 712 }
 713
 714
 715 void BufferView::Pimpl::center()
 716 {
 717         LyXText * t = bv_->text;
 718
 719         beforeChange(t);
 720         int const half_height = workarea().workHeight() / 2;
 721         int new_y = 0;
 722
 723         if (t->cursor.y() > half_height) {
 724                 new_y = t->cursor.y() - half_height;
 725         }
 726
 727         // FIXME: look at this comment again ...
 728
 729         // FIXME: can we do this w/o calling screen directly ?
 730         // This updates top_y() but means the fitCursor() call
 731         // from the update(FITCUR) doesn't realise that we might
 732         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 733         // the scrollbar to be updated as it should, so we have
 734         // to do it manually. Any operation that does a center()
 735         // and also might have moved top_y() must make sure to call
 736         // updateScrollbar() currently. Never mind that this is a
 737         // pretty obfuscated way of updating t->top_y()
 738         screen().draw(t, bv_, new_y);
 739
 740         update(BufferView::SELECT);
 741 }
 742
 743
 744 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 745 {
 746         workarea().putClipboard(stuff);
 747 }
 748
 749
 750 /*
 751  * Dispatch functions for actions which can be valid for BufferView->text
 752  * and/or InsetText->text!!!
 753  */
 754
 755
 756 Inset * BufferView::Pimpl::getInsetByCode(Inset::Code code)
 757 {
 758 #if 0
 759         LyXCursor cursor = bv_->getLyXText()->cursor;
 760         Buffer::inset_iterator it =
 761                 find_if(Buffer::inset_iterator(
 762                         cursor.par(), cursor.pos()),
 763                         buffer_->inset_iterator_end(),
 764                         lyx::compare_memfun(&Inset::lyxCode, code));
 765         return it != buffer_->inset_iterator_end() ? (*it) : 0;
 766 #else
 767         // Ok, this is a little bit too brute force but it
 768         // should work for now. Better infrastructure is comming. (Lgb)
 769
 770         Buffer * b = bv_->buffer();
 771         LyXCursor cursor = bv_->getLyXText()->cursor;
 772
 773         Buffer::inset_iterator beg = b->inset_iterator_begin();
 774         Buffer::inset_iterator end = b->inset_iterator_end();
 775
 776         bool cursor_par_seen = false;
 777
 778         for (; beg != end; ++beg) {
 779                 if (beg.getPar() == cursor.par()) {
 780                         cursor_par_seen = true;
 781                 }
 782                 if (cursor_par_seen) {
 783                         if (beg.getPar() == cursor.par()
 784                             && beg.getPos() >= cursor.pos()) {
 785                                 break;
 786                         } else if (beg.getPar() != cursor.par()) {
 787                                 break;
 788                         }
 789                 }
 790
 791         }
 792         if (beg != end) {
 793                 // Now find the first inset that matches code.
 794                 for (; beg != end; ++beg) {
 795                         if (beg->lyxCode() == code) {
 796                                 return &(*beg);
 797                         }
 798                 }
 799         }
 800         return 0;
 801 #endif
 802 }
 803
 804
 805 void BufferView::Pimpl::MenuInsertLyXFile(string const & filen)
 806 {
 807         string filename = filen;
 808
 809         if (filename.empty()) {
 810                 // Launch a file browser
 811                 string initpath = lyxrc.document_path;
 812
 813                 if (available()) {
 814                         string const trypath = owner_->buffer()->filePath();
 815                         // If directory is writeable, use this as default.
 816                         if (IsDirWriteable(trypath))
 817                                 initpath = trypath;
 818                 }
 819
 820                 FileDialog fileDlg(_("Select LyX document to insert"),
 821                         LFUN_FILE_INSERT,
 822                         make_pair(string(_("Documents|#o#O")),
 823                                   string(lyxrc.document_path)),
 824                         make_pair(string(_("Examples|#E#e")),
 825                                   string(AddPath(system_lyxdir, "examples"))));
 826
 827                 FileDialog::Result result =
 828                         fileDlg.open(initpath,
 829                                        _("*.lyx| LyX Documents (*.lyx)"));
 830
 831                 if (result.first == FileDialog::Later)
 832                         return;
 833
 834                 filename = result.second;
 835
 836                 // check selected filename
 837                 if (filename.empty()) {
 838                         owner_->message(_("Canceled."));
 839                         return;
 840                 }
 841         }
 842
 843         // get absolute path of file and add ".lyx" to the filename if
 844         // necessary
 845         filename = FileSearch(string(), filename, "lyx");
 846
 847         string const disp_fn = MakeDisplayPath(filename);
 848         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 849         bool const res = bv_->insertLyXFile(filename);
 850         if (res)
 851                 owner_->message(bformat(_("Document %1$s inserted."), disp_fn));
 852         else
 853                 owner_->message(bformat(_("Could not insert document %1$s"), disp_fn));
 854 }
 855
 856
 857 void BufferView::Pimpl::trackChanges()
 858 {
 859         Buffer * buf(bv_->buffer());
 860         bool const tracking(buf->params.tracking_changes);
 861
 862         if (!tracking) {
 863                 ParIterator const end = buf->par_iterator_end();
 864                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it) {
 865                         (*it)->trackChanges();
 866                 }
 867                 buf->params.tracking_changes = true;
 868
 869                 // we cannot allow undos beyond the freeze point
 870                 buf->undostack.clear();
 871         } else {
 872                 update(BufferView::SELECT);
 873                 bv_->text->setCursor(buf->paragraphs.begin(), 0);
 874 #warning changes FIXME
 875                 //moveCursorUpdate(false);
 876
 877                 bool found = lyxfind::findNextChange(bv_);
 878                 if (found) {
 879                         owner_->getDialogs().show("changes");
 880                         return;
 881                 }
 882
 883                 ParIterator const end = buf->par_iterator_end();
 884                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it) {
 885                         (*it)->untrackChanges();
 886                 }
 887                 buf->params.tracking_changes = false;
 888         }
 889
 890         buf->redostack.clear();
 891 }
 892
 893
 894 // Doesn't go through lyxfunc, so we need to update the
 895 // layout choice etc. ourselves
 896 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & ev_in)
 897 {
 898         // e.g. Qt mouse press when no buffer
 899         if (!available())
 900                 return false;
 901
 902         screen().hideCursor();
 903
 904         bool const res = dispatch(ev_in);
 905
 906         // see workAreaKeyPress
 907         cursor_timeout.restart();
 908         screen().showCursor(*bv_);
 909
 910         // FIXME: we should skip these when selecting
 911         bv_->owner()->updateLayoutChoice();
 912         bv_->owner()->updateToolbar();
 913         bv_->fitCursor();
 914
 915         // slight hack: this is only called currently when
 916         // we clicked somewhere, so we force through the display
 917         // of the new status here.
 918         bv_->owner()->clearMessage();
 919
 920         return res;
 921 }
 922
 923
 924 bool BufferView::Pimpl::dispatch(FuncRequest const & ev_in)
 925 {
 926         // Make sure that the cached BufferView is correct.
 927         FuncRequest ev = ev_in;
 928         ev.setView(bv_);
 929
 930         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
 931                 << " action[" << ev.action << ']'
 932                 << " arg[" << ev.argument << ']'
 933                 << " x[" << ev.x << ']'
 934                 << " y[" << ev.y << ']'
 935                 << " button[" << ev.button() << ']'
 936                 << endl;
 937
 938         LyXTextClass const & tclass = buffer_->params.getLyXTextClass();
 939
 940         switch (ev.action) {
 941
 942         case LFUN_SCROLL_INSET:
 943                 // this is not handled here as this function is only active
 944                 // if we have a locking_inset and that one is (or contains)
 945                 // a tabular-inset
 946                 break;
 947
 948         case LFUN_FILE_INSERT:
 949                 MenuInsertLyXFile(ev.argument);
 950                 break;
 951
 952         case LFUN_FILE_INSERT_ASCII_PARA:
 953                 InsertAsciiFile(bv_, ev.argument, true);
 954                 break;
 955
 956         case LFUN_FILE_INSERT_ASCII:
 957                 InsertAsciiFile(bv_, ev.argument, false);
 958                 break;
 959
 960         case LFUN_LANGUAGE:
 961                 lang(bv_, ev.argument);
 962                 switchKeyMap();
 963                 owner_->view_state_changed();
 964                 break;
 965
 966         case LFUN_EMPH:
 967                 emph(bv_);
 968                 owner_->view_state_changed();
 969                 break;
 970
 971         case LFUN_BOLD:
 972                 bold(bv_);
 973                 owner_->view_state_changed();
 974                 break;
 975
 976         case LFUN_NOUN:
 977                 noun(bv_);
 978                 owner_->view_state_changed();
 979                 break;
 980
 981         case LFUN_CODE:
 982                 code(bv_);
 983                 owner_->view_state_changed();
 984                 break;
 985
 986         case LFUN_SANS:
 987                 sans(bv_);
 988                 owner_->view_state_changed();
 989                 break;
 990
 991         case LFUN_ROMAN:
 992                 roman(bv_);
 993                 owner_->view_state_changed();
 994                 break;
 995
 996         case LFUN_DEFAULT:
 997                 styleReset(bv_);
 998                 owner_->view_state_changed();
 999                 break;
1000
1001         case LFUN_UNDERLINE:
1002                 underline(bv_);
1003                 owner_->view_state_changed();
1004                 break;
1005
1006         case LFUN_FONT_SIZE:
1007                 fontSize(bv_, ev.argument);
1008                 owner_->view_state_changed();
1009                 break;
1010
1011         case LFUN_FONT_STATE:
1012                 owner_->getLyXFunc().setMessage(currentState(bv_));
1013                 break;
1014
1015         case LFUN_INSERT_LABEL: {
1016                 // Try and generate a valid label
1017                 string const contents = ev.argument.empty() ?
1018                         getPossibleLabel(*bv_) : ev.argument;
1019                 InsetCommandParams icp("label", contents);
1020                 string data = InsetCommandMailer::params2string("label", icp);
1021                 owner_->getDialogs().show("label", data, 0);
1022         }
1023         break;
1024
1025         case LFUN_BOOKMARK_SAVE:
1026                 savePosition(strToUnsignedInt(ev.argument));
1027                 break;
1028
1029         case LFUN_BOOKMARK_GOTO:
1030                 restorePosition(strToUnsignedInt(ev.argument));
1031                 break;
1032
1033         case LFUN_REF_GOTO: {
1034                 string label = ev.argument;
1035                 if (label.empty()) {
1036                         InsetRef * inset =
1037                                 static_cast<InsetRef*>(getInsetByCode(Inset::REF_CODE));
1038                         if (inset) {
1039                                 label = inset->getContents();
1040                                 savePosition(0);
1041                         }
1042                 }
1043
1044                 if (!label.empty())
1045                         bv_->gotoLabel(label);
1046         }
1047         break;
1048
1049         // --- accented characters ---------------------------
1050
1051         case LFUN_UMLAUT:
1052         case LFUN_CIRCUMFLEX:
1053         case LFUN_GRAVE:
1054         case LFUN_ACUTE:
1055         case LFUN_TILDE:
1056         case LFUN_CEDILLA:
1057         case LFUN_MACRON:
1058         case LFUN_DOT:
1059         case LFUN_UNDERDOT:
1060         case LFUN_UNDERBAR:
1061         case LFUN_CARON:
1062         case LFUN_SPECIAL_CARON:
1063         case LFUN_BREVE:
1064         case LFUN_TIE:
1065         case LFUN_HUNG_UMLAUT:
1066         case LFUN_CIRCLE:
1067         case LFUN_OGONEK:
1068                 if (ev.argument.empty()) {
1069                         // As always...
1070                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1071                 } else {
1072                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1073                         owner_->getIntl().getTransManager()
1074                                 .TranslateAndInsert(ev.argument[0], bv_->getLyXText());
1075                         update(bv_->getLyXText(), BufferView::SELECT);
1076                 }
1077                 break;
1078
1079         case LFUN_MATH_MACRO:
1080         case LFUN_MATH_DELIM:
1081         case LFUN_INSERT_MATRIX:
1082         case LFUN_INSERT_MATH:
1083         case LFUN_MATH_IMPORT_SELECTION: // Imports LaTeX from the X selection
1084         case LFUN_MATH_DISPLAY:          // Open or create a displayed math inset
1085         case LFUN_MATH_MODE:             // Open or create an inlined math inset
1086                 mathDispatch(ev);
1087                 break;
1088
1089         case LFUN_INSET_APPLY: {
1090                 string const name = ev.getArg(0);
1091
1092                 InsetBase * inset = owner_->getDialogs().getOpenInset(name);
1093                 if (inset) {
1094                         // This works both for 'original' and 'mathed' insets.
1095                         // Note that the localDispatch performs updateInset
1096                         // also.
1097                         FuncRequest fr(bv_, LFUN_INSET_MODIFY, ev.argument);
1098                         inset->localDispatch(fr);
1099                 } else {
1100                         FuncRequest fr(bv_, LFUN_INSET_INSERT, ev.argument);
1101                         dispatch(fr);
1102                 }
1103         }
1104         break;
1105
1106         case LFUN_INSET_INSERT: {
1107                 Inset * inset = createInset(ev);
1108                 if (inset && insertInset(inset)) {
1109                         updateInset(inset);
1110
1111                         string const name = ev.getArg(0);
1112                         if (name == "bibitem") {
1113                                 // We need to do a redraw because the maximum
1114                                 // InsetBibitem width could have changed
1115 #warning please check you mean repaint() not update(),
1116 #warning and whether the repaint() is needed at all
1117                                 bv_->repaint();
1118                                 bv_->fitCursor();
1119                         }
1120                 } else {
1121                         delete inset;
1122                 }
1123         }
1124         break;
1125
1126         case LFUN_FLOAT_LIST:
1127                 if (tclass.floats().typeExist(ev.argument)) {
1128                         Inset * inset = new InsetFloatList(ev.argument);
1129                         if (!insertInset(inset, tclass.defaultLayoutName()))
1130                                 delete inset;
1131                 } else {
1132                         lyxerr << "Non-existent float type: "
1133                                << ev.argument << endl;
1134                 }
1135                 break;
1136
1137         case LFUN_LAYOUT_PARAGRAPH: {
1138                 Paragraph const * par = &*bv_->getLyXText()->cursor.par();
1139                 if (!par)
1140                         break;
1141
1142                 string data;
1143                 params2string(*par, data);
1144
1145                 data = "show\n" + data;
1146                 bv_->owner()->getDialogs().show("paragraph", data);
1147                 break;
1148         }
1149
1150         case LFUN_PARAGRAPH_UPDATE: {
1151                 Paragraph const * par = &*bv_->getLyXText()->cursor.par();
1152                 if (!par)
1153                         break;
1154
1155                 string data;
1156                 params2string(*par, data);
1157
1158                 // Will the paragraph accept changes from the dialog?
1159                 Inset * const inset = par->inInset();
1160                 bool const accept =
1161                         !(inset && inset->forceDefaultParagraphs(inset));
1162
1163                 data = "update " + tostr(accept) + '\n' + data;
1164                 bv_->owner()->getDialogs().update("paragraph", data);
1165                 break;
1166         }
1167
1168         case LFUN_PARAGRAPH_APPLY:
1169                 setParagraphParams(*bv_, ev.argument);
1170                 break;
1171
1172         case LFUN_THESAURUS_ENTRY:
1173         {
1174                 string arg = ev.argument;
1175
1176                 if (arg.empty()) {
1177                         arg = bv_->getLyXText()->selectionAsString(buffer_,
1178                                                                    false);
1179
1180                         // FIXME
1181                         if (arg.size() > 100 || arg.empty()) {
1182                                 // Get word or selection
1183                                 bv_->getLyXText()->selectWordWhenUnderCursor(LyXText::WHOLE_WORD);
1184                                 arg = bv_->getLyXText()->selectionAsString(buffer_, false);
1185                                 // FIXME: where is getLyXText()->unselect(bv_) ?
1186                         }
1187                 }
1188
1189                 bv_->owner()->getDialogs().show("thesaurus", arg);
1190         }
1191                 break;
1192
1193         case LFUN_TRACK_CHANGES:
1194                 trackChanges();
1195                 break;
1196
1197         case LFUN_MERGE_CHANGES:
1198                 owner_->getDialogs().show("changes");
1199                 break;
1200
1201         case LFUN_ACCEPT_ALL_CHANGES: {
1202                 update(BufferView::SELECT);
1203                 bv_->text->setCursor(bv_->buffer()->paragraphs.begin(), 0);
1204 #warning FIXME changes
1205                 //moveCursorUpdate(false);
1206
1207                 while (lyxfind::findNextChange(bv_)) {
1208                         bv_->getLyXText()->acceptChange();
1209                 }
1210                 update(BufferView::SELECT);
1211                 break;
1212         }
1213
1214         case LFUN_REJECT_ALL_CHANGES: {
1215                 update(BufferView::SELECT);
1216                 bv_->text->setCursor(bv_->buffer()->paragraphs.begin(), 0);
1217 #warning FIXME changes
1218                 //moveCursorUpdate(false);
1219
1220                 while (lyxfind::findNextChange(bv_)) {
1221                         bv_->getLyXText()->rejectChange();
1222                 }
1223                 update(BufferView::SELECT);
1224                 break;
1225         }
1226
1227         case LFUN_ACCEPT_CHANGE: {
1228                 bv_->getLyXText()->acceptChange();
1229                 update(BufferView::SELECT);
1230                 break;
1231         }
1232
1233         case LFUN_REJECT_CHANGE: {
1234                 bv_->getLyXText()->rejectChange();
1235                 update(BufferView::SELECT);
1236                 break;
1237         }
1238
1239         case LFUN_UNKNOWN_ACTION:
1240                 ev.errorMessage(N_("Unknown function!"));
1241                 break;
1242
1243         default:
1244                 return bv_->getLyXText()->dispatch(FuncRequest(ev, bv_));
1245         } // end of switch
1246
1247         return true;
1248 }
1249
1250
1251 bool BufferView::Pimpl::insertInset(Inset * inset, string const & lout)
1252 {
1253         // if we are in a locking inset we should try to insert the
1254         // inset there otherwise this is a illegal function now
1255         if (bv_->theLockingInset()) {
1256                 if (bv_->theLockingInset()->insetAllowed(inset))
1257                         return bv_->theLockingInset()->insertInset(bv_, inset);
1258                 return false;
1259         }
1260
1261         // not quite sure if we want this...
1262         setCursorParUndo(bv_);
1263         freezeUndo();
1264
1265         beforeChange(bv_->text);
1266         if (!lout.empty()) {
1267                 update(BufferView::SELECT);
1268                 bv_->text->breakParagraph(bv_->buffer()->paragraphs);
1269                 update(BufferView::SELECT);
1270
1271                 if (!bv_->text->cursor.par()->empty()) {
1272                         bv_->text->cursorLeft(bv_);
1273
1274                         bv_->text->breakParagraph(bv_->buffer()->paragraphs);
1275                         update(BufferView::SELECT);
1276                 }
1277
1278                 string lres = lout;
1279                 LyXTextClass const & tclass =
1280                         buffer_->params.getLyXTextClass();
1281                 bool hasLayout = tclass.hasLayout(lres);
1282                 string lay = tclass.defaultLayoutName();
1283
1284                 if (hasLayout != false) {
1285                         // layout found
1286                         lay = lres;
1287                 } else {
1288                         // layout not fount using default
1289                         lay = tclass.defaultLayoutName();
1290                 }
1291
1292                 bv_->text->setLayout(lay);
1293
1294                 bv_->text->setParagraph(0, 0,
1295                                    0, 0,
1296                                    VSpace(VSpace::NONE), VSpace(VSpace::NONE),
1297                                    Spacing(),
1298                                    LYX_ALIGN_LAYOUT,
1299                                    string(),
1300                                    0);
1301                 update(BufferView::SELECT);
1302         }
1303
1304         bv_->text->insertInset(inset);
1305         update(BufferView::SELECT);
1306
1307         unFreezeUndo();
1308         return true;
1309 }
1310
1311
1312 void BufferView::Pimpl::updateInset(Inset * inset)
1313 {
1314         if (!inset || !available())
1315                 return;
1316
1317         // first check for locking insets
1318         if (bv_->theLockingInset()) {
1319                 if (bv_->theLockingInset() == inset) {
1320                         if (bv_->text->updateInset(inset)) {
1321                                 update();
1322                                 updateScrollbar();
1323                                 return;
1324                         }
1325                 } else if (bv_->theLockingInset()->updateInsetInInset(bv_, inset)) {
1326                         if (bv_->text->updateInset(bv_->theLockingInset())) {
1327                                 update();
1328                                 updateScrollbar();
1329                                 return;
1330                         }
1331                 }
1332         }
1333
1334         // then check if the inset is a top_level inset (has no owner)
1335         // if yes do the update as always otherwise we have to update the
1336         // toplevel inset where this inset is inside
1337         Inset * tl_inset = inset;
1338         while (tl_inset->owner())
1339                 tl_inset = tl_inset->owner();
1340         if (tl_inset == inset) {
1341                 update(BufferView::UPDATE);
1342                 if (bv_->text->updateInset(inset)) {
1343                         update(BufferView::SELECT);
1344                         return;
1345                 }
1346         } else if (static_cast<UpdatableInset *>(tl_inset)
1347                            ->updateInsetInInset(bv_, inset))
1348         {
1349                 if (bv_->text->updateInset(tl_inset)) {
1350                         update();
1351                         updateScrollbar();
1352                 }
1353         }
1354 }