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 #ifdef __GNUG__
  12 #pragma implementation
  13 #endif
  14
  15 #include "BufferView_pimpl.h"
  16 #include "frontends/WorkArea.h"
  17 #include "frontends/screen.h"
  18 #include "frontends/LyXScreenFactory.h"
  19 #include "frontends/WorkAreaFactory.h"
  20 #include "frontends/Dialogs.h"
  21 #include "frontends/Alert.h"
  22 #include "frontends/FileDialog.h"
  23 #include "frontends/mouse_state.h"
  24 #include "lyxtext.h"
  25 #include "lyxrow.h"
  26 #include "paragraph.h"
  27 #include "frontends/LyXView.h"
  28 #include "commandtags.h"
  29 #include "lyxfunc.h"
  30 #include "debug.h"
  31 #include "bufferview_funcs.h"
  32 #include "TextCache.h"
  33 #include "bufferlist.h"
  34 #include "lyxrc.h"
  35 #include "intl.h"
  36 // added for Dispatch functions
  37 #include "lyx_cb.h"
  38 #include "lyx_main.h"
  39 #include "FloatList.h"
  40 #include "gettext.h"
  41 #include "ParagraphParameters.h"
  42 #include "undo_funcs.h"
  43 #include "funcrequest.h"
  44
  45 #include "insets/insetbib.h"
  46 #include "insets/insettext.h"
  47 #include "insets/inseturl.h"
  48 #include "insets/insetlatexaccent.h"
  49 #include "insets/insettoc.h"
  50 #include "insets/insetindex.h"
  51 #include "insets/insetref.h"
  52 #include "insets/insetinclude.h"
  53 #include "insets/insetcite.h"
  54 #include "insets/insetgraphics.h"
  55 #include "insets/insetmarginal.h"
  56 #include "insets/insetfloatlist.h"
  57
  58 #include "mathed/formulabase.h"
  59
  60 #include "graphics/Previews.h"
  61
  62 #include "support/LAssert.h"
  63 #include "support/lstrings.h"
  64 #include "support/filetools.h"
  65
  66 #include <boost/bind.hpp>
  67 #include <boost/signals/connection.hpp>
  68
  69 #include <unistd.h>
  70 #include <sys/wait.h>
  71
  72
  73 using std::vector;
  74 using std::find_if;
  75 using std::find;
  76 using std::pair;
  77 using std::endl;
  78 using std::make_pair;
  79 using std::min;
  80
  81 using lyx::pos_type;
  82
  83 extern BufferList bufferlist;
  84
  85
  86 namespace {
  87
  88 unsigned int const saved_positions_num = 20;
  89
  90 // All the below connection objects are needed because of a bug in some
  91 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
  92 // to these connections we avoid a segfault upon startup, and also at exit.
  93 // (Lgb)
  94
  95 boost::signals::connection dispatchcon;
  96 boost::signals::connection timecon;
  97 boost::signals::connection doccon;
  98 boost::signals::connection resizecon;
  99 boost::signals::connection kpresscon;
 100 boost::signals::connection selectioncon;
 101 boost::signals::connection lostcon;
 102
 103
 104 } // anon namespace
 105
 106
 107 BufferView::Pimpl::Pimpl(BufferView * bv, LyXView * owner,
 108              int xpos, int ypos, int width, int height)
 109         : bv_(bv), owner_(owner), buffer_(0), cursor_timeout(400),
 110           using_xterm_cursor(false)
 111 {
 112         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 113         screen_.reset(LyXScreenFactory::create(workarea()));
 114
 115         // Setup the signals
 116         doccon = workarea().scrollDocView
 117                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 118         resizecon = workarea().workAreaResize
 119                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 120         dispatchcon = workarea().dispatch
 121                 .connect(boost::bind(&BufferView::Pimpl::dispatch, this, _1));
 122         kpresscon = workarea().workAreaKeyPress
 123                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 124         selectioncon = workarea().selectionRequested
 125                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 126         lostcon = workarea().selectionLost
 127                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 128
 129         timecon = cursor_timeout.timeout
 130                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 131         cursor_timeout.start();
 132         saved_positions.resize(saved_positions_num);
 133 }
 134
 135
 136 WorkArea & BufferView::Pimpl::workarea() const
 137 {
 138         return *workarea_.get();
 139 }
 140
 141
 142 LyXScreen & BufferView::Pimpl::screen() const
 143 {
 144         return *screen_.get();
 145 }
 146
 147
 148 Painter & BufferView::Pimpl::painter() const
 149 {
 150         return workarea().getPainter();
 151 }
 152
 153
 154 void BufferView::Pimpl::buffer(Buffer * b)
 155 {
 156         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 157                             << b << ")" << endl;
 158         if (buffer_) {
 159                 buffer_->delUser(bv_);
 160
 161                 // Put the old text into the TextCache, but
 162                 // only if the buffer is still loaded.
 163                 // Also set the owner of the test to 0
 164                 //              bv_->text->owner(0);
 165                 textcache.add(buffer_, workarea().workWidth(), bv_->text);
 166                 if (lyxerr.debugging())
 167                         textcache.show(lyxerr, "BufferView::buffer");
 168
 169                 bv_->text = 0;
 170         }
 171
 172         // set current buffer
 173         buffer_ = b;
 174
 175         if (bufferlist.getState() == BufferList::CLOSING) return;
 176
 177         // if we are closing the buffer, use the first buffer as current
 178         if (!buffer_) {
 179                 buffer_ = bufferlist.first();
 180         }
 181
 182         if (buffer_) {
 183                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 184                 buffer_->addUser(bv_);
 185
 186                 // If we don't have a text object for this, we make one
 187                 if (bv_->text == 0) {
 188                         resizeCurrentBuffer();
 189                 }
 190
 191                 // FIXME: needed when ?
 192                 bv_->text->first_y =
 193                         screen().topCursorVisible(bv_->text->cursor, bv_->text->first_y);
 194
 195                 // Similarly, buffer-dependent dialogs should be updated or
 196                 // hidden. This should go here because some dialogs (eg ToC)
 197                 // require bv_->text.
 198                 owner_->getDialogs().updateBufferDependent(true);
 199         } else {
 200                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 201                 owner_->getDialogs().hideBufferDependent();
 202
 203                 // Also remove all remaining text's from the testcache.
 204                 // (there should not be any!) (if there is any it is a
 205                 // bug!)
 206                 if (lyxerr.debugging())
 207                         textcache.show(lyxerr, "buffer delete all");
 208                 textcache.clear();
 209         }
 210
 211         repaint();
 212         updateScrollbar();
 213         owner_->updateMenubar();
 214         owner_->updateToolbar();
 215         owner_->updateLayoutChoice();
 216         owner_->updateWindowTitle();
 217
 218         if (grfx::Previews::activated() && buffer_)
 219                 grfx::Previews::get().generateBufferPreviews(*buffer_);
 220 }
 221
 222
 223 bool BufferView::Pimpl::fitCursor()
 224 {
 225         bool ret;
 226
 227         if (bv_->theLockingInset()) {
 228                 bv_->theLockingInset()->fitInsetCursor(bv_);
 229                 ret = true;
 230         } else {
 231                 ret = screen().fitCursor(bv_->text, bv_);
 232         }
 233
 234         bv_->owner()->getDialogs().updateParagraph();
 235         if (ret)
 236                 updateScrollbar();
 237         return ret;
 238 }
 239
 240
 241 void BufferView::Pimpl::redoCurrentBuffer()
 242 {
 243         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 244         if (buffer_ && bv_->text) {
 245                 resizeCurrentBuffer();
 246                 updateScrollbar();
 247                 owner_->updateLayoutChoice();
 248                 repaint();
 249         }
 250 }
 251
 252
 253 int BufferView::Pimpl::resizeCurrentBuffer()
 254 {
 255         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 256
 257         Paragraph * par = 0;
 258         Paragraph * selstartpar = 0;
 259         Paragraph * selendpar = 0;
 260         UpdatableInset * the_locking_inset = 0;
 261
 262         pos_type pos = 0;
 263         pos_type selstartpos = 0;
 264         pos_type selendpos = 0;
 265         bool selection = false;
 266         bool mark_set  = false;
 267
 268         owner_->prohibitInput();
 269
 270         owner_->message(_("Formatting document..."));
 271
 272         if (bv_->text) {
 273                 par = bv_->text->cursor.par();
 274                 pos = bv_->text->cursor.pos();
 275                 selstartpar = bv_->text->selection.start.par();
 276                 selstartpos = bv_->text->selection.start.pos();
 277                 selendpar = bv_->text->selection.end.par();
 278                 selendpos = bv_->text->selection.end.pos();
 279                 selection = bv_->text->selection.set();
 280                 mark_set = bv_->text->selection.mark();
 281                 the_locking_inset = bv_->theLockingInset();
 282                 buffer_->resizeInsets(bv_);
 283                 // I don't think the delete and new are necessary here we just could
 284                 // call only init! (Jug 20020419)
 285                 delete bv_->text;
 286                 bv_->text = new LyXText(bv_);
 287                 bv_->text->init(bv_);
 288         } else {
 289                 // See if we have a text in TextCache that fits
 290                 // the new buffer_ with the correct width.
 291                 bv_->text = textcache.findFit(buffer_, workarea().workWidth());
 292                 if (bv_->text) {
 293                         if (lyxerr.debugging()) {
 294                                 lyxerr << "Found a LyXText that fits:\n";
 295                                 textcache.show(lyxerr, make_pair(buffer_, make_pair(workarea().workWidth(), bv_->text)));
 296                         }
 297                         // Set the owner of the newly found text
 298                         //      bv_->text->owner(bv_);
 299                         if (lyxerr.debugging())
 300                                 textcache.show(lyxerr, "resizeCurrentBuffer");
 301                 } else {
 302                         bv_->text = new LyXText(bv_);
 303                         bv_->text->init(bv_);
 304                         //buffer_->resizeInsets(bv_);
 305                 }
 306         }
 307
 308         if (par) {
 309                 bv_->text->selection.set(true);
 310                 // At this point just to avoid the Delete-Empty-Paragraph-
 311                 // Mechanism when setting the cursor.
 312                 bv_->text->selection.mark(mark_set);
 313                 if (selection) {
 314                         bv_->text->setCursor(bv_, selstartpar, selstartpos);
 315                         bv_->text->selection.cursor = bv_->text->cursor;
 316                         bv_->text->setCursor(bv_, selendpar, selendpos);
 317                         bv_->text->setSelection(bv_);
 318                         bv_->text->setCursor(bv_, par, pos);
 319                 } else {
 320                         bv_->text->setCursor(bv_, par, pos);
 321                         bv_->text->selection.cursor = bv_->text->cursor;
 322                         bv_->text->selection.set(false);
 323                 }
 324                 // remake the inset locking
 325                 bv_->theLockingInset(the_locking_inset);
 326         }
 327
 328         bv_->text->first_y = screen().topCursorVisible(bv_->text->cursor, bv_->text->first_y);
 329
 330         switchKeyMap();
 331         owner_->allowInput();
 332
 333         updateScrollbar();
 334
 335         return 0;
 336 }
 337
 338
 339 void BufferView::Pimpl::repaint()
 340 {
 341         // Regenerate the screen.
 342         screen().redraw(bv_->text, bv_);
 343 }
 344
 345
 346 void BufferView::Pimpl::updateScrollbar()
 347 {
 348         if (!bv_->text) {
 349                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 350                 workarea().setScrollbarParams(0, 0, 0);
 351                 return;
 352         }
 353
 354         LyXText const & t = *bv_->text;
 355
 356         lyxerr[Debug::GUI] << "Updating scrollbar: h " << t.height << ", first_y "
 357                 << t.first_y << ", default height " << t.defaultHeight() << endl;
 358
 359         workarea().setScrollbarParams(t.height, t.first_y, t.defaultHeight());
 360 }
 361
 362
 363 void BufferView::Pimpl::scrollDocView(int value)
 364 {
 365         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 366
 367         if (!buffer_) return;
 368
 369         screen().draw(bv_->text, bv_, value);
 370
 371         if (!lyxrc.cursor_follows_scrollbar) {
 372                 return;
 373         }
 374
 375         LyXText * vbt = bv_->text;
 376
 377         int const height = vbt->defaultHeight();
 378         int const first = static_cast<int>((bv_->text->first_y + height));
 379         int const last = static_cast<int>((bv_->text->first_y + workarea().workHeight() - height));
 380
 381         if (vbt->cursor.y() < first)
 382                 vbt->setCursorFromCoordinates(bv_, 0, first);
 383         else if (vbt->cursor.y() > last)
 384                 vbt->setCursorFromCoordinates(bv_, 0, last);
 385 }
 386
 387
 388 int BufferView::Pimpl::scroll(long time)
 389 {
 390         if (!buffer_)
 391                 return 0;
 392
 393         LyXText const * t = bv_->text;
 394
 395         double const diff = t->defaultHeight()
 396                 + double(time) * double(time) * 0.125;
 397
 398         scrollDocView(int(diff));
 399         workarea().setScrollbarParams(t->height, t->first_y, t->defaultHeight());
 400         return 0;
 401 }
 402
 403
 404 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 405                                          key_modifier::state state)
 406 {
 407         bv_->owner()->getLyXFunc().processKeySym(key, state);
 408 }
 409
 410
 411 void BufferView::Pimpl::selectionRequested()
 412 {
 413         static string sel;
 414
 415         if (!available())
 416                 return;
 417
 418         LyXText * text = bv_->getLyXText();
 419
 420         if (text->selection.set() &&
 421                 (!bv_->text->xsel_cache.set() ||
 422                  text->selection.start != bv_->text->xsel_cache.start ||
 423                  text->selection.end != bv_->text->xsel_cache.end))
 424         {
 425                 bv_->text->xsel_cache = text->selection;
 426                 sel = text->selectionAsString(bv_->buffer(), false);
 427         } else if (!text->selection.set()) {
 428                 sel = string();
 429                 bv_->text->xsel_cache.set(false);
 430         }
 431         if (!sel.empty()) {
 432                 workarea().putClipboard(sel);
 433         }
 434 }
 435
 436
 437 void BufferView::Pimpl::selectionLost()
 438 {
 439         if (available()) {
 440                 hideCursor();
 441                 toggleSelection();
 442                 bv_->getLyXText()->clearSelection();
 443                 showCursor();
 444                 bv_->text->xsel_cache.set(false);
 445         }
 446 }
 447
 448
 449 void BufferView::Pimpl::workAreaResize()
 450 {
 451         static int work_area_width;
 452         static int work_area_height;
 453
 454         bool const widthChange = workarea().workWidth() != work_area_width;
 455         bool const heightChange = workarea().workHeight() != work_area_height;
 456
 457         // update from work area
 458         work_area_width = workarea().workWidth();
 459         work_area_height = workarea().workHeight();
 460
 461         if (buffer_ != 0) {
 462                 if (widthChange) {
 463                         // The visible LyXView need a resize
 464                         resizeCurrentBuffer();
 465
 466                         // Remove all texts from the textcache
 467                         // This is not _really_ what we want to do. What
 468                         // we really want to do is to delete in textcache
 469                         // that does not have a BufferView with matching
 470                         // width, but as long as we have only one BufferView
 471                         // deleting all gives the same result.
 472                         if (lyxerr.debugging())
 473                                 textcache.show(lyxerr, "Expose delete all");
 474                         textcache.clear();
 475                         // FIXME: this is already done in resizeCurrentBuffer() ??
 476                         buffer_->resizeInsets(bv_);
 477                 } else if (heightChange) {
 478                         // fitCursor() ensures we don't jump back
 479                         // to the start of the document on vertical
 480                         // resize
 481                         fitCursor();
 482                 }
 483         }
 484
 485         if (widthChange || heightChange) {
 486                 repaint();
 487         }
 488
 489         // always make sure that the scrollbar is sane.
 490         updateScrollbar();
 491         owner_->updateLayoutChoice();
 492         return;
 493 }
 494
 495
 496 void BufferView::Pimpl::update()
 497 {
 498         if (!bv_->theLockingInset() || !bv_->theLockingInset()->nodraw()) {
 499                 LyXText::text_status st = bv_->text->status();
 500                 screen().update(bv_->text, bv_);
 501                 bool fitc = false;
 502                 while (bv_->text->status() == LyXText::CHANGED_IN_DRAW) {
 503                         bv_->text->fullRebreak(bv_);
 504                         st = LyXText::NEED_MORE_REFRESH;
 505                         bv_->text->setCursor(bv_, bv_->text->cursor.par(),
 506                                              bv_->text->cursor.pos());
 507                         if (bv_->text->selection.set()) {
 508                                 bv_->text->setCursor(bv_, bv_->text->selection.start,
 509                                                      bv_->text->selection.start.par(),
 510                                                      bv_->text->selection.start.pos());
 511                                 bv_->text->setCursor(bv_, bv_->text->selection.end,
 512                                                      bv_->text->selection.end.par(),
 513                                                      bv_->text->selection.end.pos());
 514                         }
 515                         fitc = true;
 516                         bv_->text->status(bv_, st);
 517                         screen().update(bv_->text, bv_);
 518                 }
 519                 // do this here instead of in the screen::update because of
 520                 // the above loop!
 521                 bv_->text->status(bv_, LyXText::UNCHANGED);
 522                 if (fitc)
 523                         fitCursor();
 524         }
 525 }
 526
 527 // Values used when calling update:
 528 // -3 - update
 529 // -2 - update, move sel_cursor if selection, fitcursor
 530 // -1 - update, move sel_cursor if selection, fitcursor, mark dirty
 531 //  0 - update, move sel_cursor if selection, fitcursor
 532 //  1 - update, move sel_cursor if selection, fitcursor, mark dirty
 533 //  3 - update, move sel_cursor if selection
 534 //
 535 // update -
 536 // a simple redraw of the parts that need refresh
 537 //
 538 // move sel_cursor if selection -
 539 // the text's sel_cursor is moved if there is selection is progress
 540 //
 541 // fitcursor -
 542 // fitCursor() is called and the scrollbar updated
 543 //
 544 // mark dirty -
 545 // the buffer is marked dirty.
 546 //
 547 // enum {
 548 //       UPDATE = 0,
 549 //       SELECT = 1,
 550 //       FITCUR = 2,
 551 //       CHANGE = 4
 552 // };
 553 //
 554 // UPDATE_ONLY = UPDATE;
 555 // UPDATE_SELECT = UPDATE | SELECT;
 556 // UPDATE_SELECT_MOVE = UPDATE | SELECT | FITCUR;
 557 // UPDATE_SELECT_MOVE_AFTER_CHANGE = UPDATE | SELECT | FITCUR | CHANGE;
 558 //
 559 // update(-3) -> update(0)         -> update(0) -> update(UPDATE)
 560 // update(-2) -> update(1 + 2)     -> update(3) -> update(SELECT|FITCUR)
 561 // update(-1) -> update(1 + 2 + 4) -> update(7) -> update(SELECT|FITCUR|CHANGE)
 562 // update(1)  -> update(1 + 2 + 4) -> update(7) -> update(SELECT|FITCUR|CHANGE)
 563 // update(3)  -> update(1)         -> update(1) -> update(SELECT)
 564
 565 void BufferView::Pimpl::update(LyXText * text, BufferView::UpdateCodes f)
 566 {
 567         owner_->updateLayoutChoice();
 568
 569         if (!text->selection.set() && (f & SELECT)) {
 570                 text->selection.cursor = text->cursor;
 571         }
 572
 573         text->fullRebreak(bv_);
 574
 575         if (text->inset_owner) {
 576                 text->inset_owner->setUpdateStatus(bv_, InsetText::NONE);
 577                 updateInset(text->inset_owner, false);
 578         } else {
 579                 update();
 580         }
 581
 582         if ((f & FITCUR)) {
 583                 fitCursor();
 584         }
 585
 586         if ((f & CHANGE)) {
 587                 buffer_->markDirty();
 588         }
 589 }
 590
 591
 592 // Callback for cursor timer
 593 void BufferView::Pimpl::cursorToggle()
 594 {
 595         if (!buffer_) {
 596                 cursor_timeout.restart();
 597                 return;
 598         }
 599
 600         /* FIXME */
 601         extern void reapSpellchecker(void);
 602         reapSpellchecker();
 603
 604         if (!bv_->theLockingInset()) {
 605                 screen().cursorToggle(bv_);
 606         } else {
 607                 bv_->theLockingInset()->toggleInsetCursor(bv_);
 608         }
 609
 610         cursor_timeout.restart();
 611 }
 612
 613
 614 bool BufferView::Pimpl::available() const
 615 {
 616         if (buffer_ && bv_->text)
 617                 return true;
 618         return false;
 619 }
 620
 621
 622 void BufferView::Pimpl::beforeChange(LyXText * text)
 623 {
 624         toggleSelection();
 625         text->clearSelection();
 626 }
 627
 628
 629 void BufferView::Pimpl::savePosition(unsigned int i)
 630 {
 631         if (i >= saved_positions_num)
 632                 return;
 633         saved_positions[i] = Position(buffer_->fileName(),
 634                                       bv_->text->cursor.par()->id(),
 635                                       bv_->text->cursor.pos());
 636         if (i > 0) {
 637                 ostringstream str;
 638                 str << _("Saved bookmark") << ' ' << i;
 639                 owner_->message(str.str().c_str());
 640         }
 641 }
 642
 643
 644 void BufferView::Pimpl::restorePosition(unsigned int i)
 645 {
 646         if (i >= saved_positions_num)
 647                 return;
 648
 649         string const fname = saved_positions[i].filename;
 650
 651         beforeChange(bv_->text);
 652
 653         if (fname != buffer_->fileName()) {
 654                 Buffer * b = bufferlist.exists(fname) ?
 655                         bufferlist.getBuffer(fname) :
 656                         bufferlist.loadLyXFile(fname); // don't ask, just load it
 657                 if (b != 0) buffer(b);
 658         }
 659
 660         Paragraph * par = buffer_->getParFromID(saved_positions[i].par_id);
 661         if (!par)
 662                 return;
 663
 664         bv_->text->setCursor(bv_, par,
 665                              min(par->size(), saved_positions[i].par_pos));
 666
 667         update(bv_->text, BufferView::SELECT | BufferView::FITCUR);
 668         if (i > 0) {
 669                 ostringstream str;
 670                 str << _("Moved to bookmark") << ' ' << i;
 671                 owner_->message(str.str().c_str());
 672         }
 673 }
 674
 675
 676 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 677 {
 678         if (i >= saved_positions_num)
 679                 return false;
 680
 681         return !saved_positions[i].filename.empty();
 682 }
 683
 684
 685 void BufferView::Pimpl::switchKeyMap()
 686 {
 687         if (!lyxrc.rtl_support)
 688                 return;
 689
 690         LyXText * text = bv_->getLyXText();
 691         if (text->real_current_font.isRightToLeft()
 692             && !(bv_->theLockingInset()
 693                  && bv_->theLockingInset()->lyxCode() == Inset::ERT_CODE))
 694         {
 695                 if (owner_->getIntl().keymap == Intl::PRIMARY)
 696                         owner_->getIntl().KeyMapSec();
 697         } else {
 698                 if (owner_->getIntl().keymap == Intl::SECONDARY)
 699                         owner_->getIntl().KeyMapPrim();
 700         }
 701 }
 702
 703
 704 void BufferView::Pimpl::insetUnlock()
 705 {
 706         if (bv_->theLockingInset()) {
 707                 bv_->theLockingInset()->insetUnlock(bv_);
 708                 bv_->theLockingInset(0);
 709                 finishUndo();
 710         }
 711 }
 712
 713
 714 void BufferView::Pimpl::showCursor()
 715 {
 716         if (bv_->theLockingInset())
 717                 bv_->theLockingInset()->showInsetCursor(bv_);
 718         else
 719                 screen().showCursor(bv_->text, bv_);
 720 }
 721
 722
 723 void BufferView::Pimpl::hideCursor()
 724 {
 725         if (!bv_->theLockingInset())
 726                 screen().hideCursor();
 727 }
 728
 729
 730 void BufferView::Pimpl::toggleSelection(bool b)
 731 {
 732         if (bv_->theLockingInset())
 733                 bv_->theLockingInset()->toggleSelection(bv_, b);
 734         screen().toggleSelection(bv_->text, bv_, b);
 735 }
 736
 737
 738 void BufferView::Pimpl::toggleToggle()
 739 {
 740         screen().toggleToggle(bv_->text, bv_);
 741 }
 742
 743
 744 void BufferView::Pimpl::center()
 745 {
 746         LyXText * t = bv_->text;
 747
 748         beforeChange(t);
 749         int const half_height = workarea().workHeight() / 2;
 750         int new_y = 0;
 751
 752         if (t->cursor.y() > half_height) {
 753                 new_y = t->cursor.y() - half_height;
 754         }
 755
 756         // FIXME: can we do this w/o calling screen directly ?
 757         // This updates first_y but means the fitCursor() call
 758         // from the update(FITCUR) doesn't realise that we might
 759         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 760         // the scrollbar to be updated as it should, so we have
 761         // to do it manually. Any operation that does a center()
 762         // and also might have moved first_y must make sure to call
 763         // updateScrollbar() currently. Never mind that this is a
 764         // pretty obfuscated way of updating t->first_y
 765         screen().draw(t, bv_, new_y);
 766
 767         update(t, BufferView::SELECT | BufferView::FITCUR);
 768 }
 769
 770
 771 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 772 {
 773         workarea().putClipboard(stuff);
 774 }
 775
 776
 777 /*
 778  * Dispatch functions for actions which can be valid for BufferView->text
 779  * and/or InsetText->text!!!
 780  */
 781
 782
 783 Inset * BufferView::Pimpl::getInsetByCode(Inset::Code code)
 784 {
 785 #if 0
 786         LyXCursor cursor = bv_->getLyXText()->cursor;
 787         Buffer::inset_iterator it =
 788                 find_if(Buffer::inset_iterator(
 789                         cursor.par(), cursor.pos()),
 790                         buffer_->inset_iterator_end(),
 791                         lyx::compare_memfun(&Inset::lyxCode, code));
 792         return it != buffer_->inset_iterator_end() ? (*it) : 0;
 793 #else
 794         // Ok, this is a little bit too brute force but it
 795         // should work for now. Better infrastructure is comming. (Lgb)
 796
 797         Buffer * b = bv_->buffer();
 798         LyXCursor cursor = bv_->getLyXText()->cursor;
 799
 800         Buffer::inset_iterator beg = b->inset_iterator_begin();
 801         Buffer::inset_iterator end = b->inset_iterator_end();
 802
 803         bool cursor_par_seen = false;
 804
 805         for (; beg != end; ++beg) {
 806                 if (beg.getPar() == cursor.par()) {
 807                         cursor_par_seen = true;
 808                 }
 809                 if (cursor_par_seen) {
 810                         if (beg.getPar() == cursor.par()
 811                             && beg.getPos() >= cursor.pos()) {
 812                                 break;
 813                         } else if (beg.getPar() != cursor.par()) {
 814                                 break;
 815                         }
 816                 }
 817
 818         }
 819         if (beg != end) {
 820                 // Now find the first inset that matches code.
 821                 for (; beg != end; ++beg) {
 822                         if (beg->lyxCode() == code) {
 823                                 return &(*beg);
 824                         }
 825                 }
 826         }
 827         return 0;
 828 #endif
 829 }
 830
 831
 832 void BufferView::Pimpl::MenuInsertLyXFile(string const & filen)
 833 {
 834         string filename = filen;
 835
 836         if (filename.empty()) {
 837                 // Launch a file browser
 838                 string initpath = lyxrc.document_path;
 839
 840                 if (available()) {
 841                         string const trypath = owner_->buffer()->filePath();
 842                         // If directory is writeable, use this as default.
 843                         if (IsDirWriteable(trypath))
 844                                 initpath = trypath;
 845                 }
 846
 847                 FileDialog fileDlg(bv_->owner(),
 848                                    _("Select LyX document to insert"),
 849                         LFUN_FILE_INSERT,
 850                         make_pair(string(_("Documents|#o#O")),
 851                                   string(lyxrc.document_path)),
 852                         make_pair(string(_("Examples|#E#e")),
 853                                   string(AddPath(system_lyxdir, "examples"))));
 854
 855                 FileDialog::Result result =
 856                         fileDlg.Select(initpath,
 857                                        _("*.lyx| LyX Documents (*.lyx)"));
 858
 859                 if (result.first == FileDialog::Later)
 860                         return;
 861
 862                 filename = result.second;
 863
 864                 // check selected filename
 865                 if (filename.empty()) {
 866                         owner_->message(_("Canceled."));
 867                         return;
 868                 }
 869         }
 870
 871         // get absolute path of file and add ".lyx" to the filename if
 872         // necessary
 873         filename = FileSearch(string(), filename, "lyx");
 874
 875         string const disp_fn(MakeDisplayPath(filename));
 876
 877         ostringstream s1;
 878         s1 << _("Inserting document") << ' '
 879            << disp_fn << " ...";
 880         owner_->message(s1.str().c_str());
 881         bool const res = bv_->insertLyXFile(filename);
 882         if (res) {
 883                 ostringstream str;
 884                 str << _("Document") << ' ' << disp_fn
 885                     << ' ' << _("inserted.");
 886                 owner_->message(str.str().c_str());
 887         } else {
 888                 ostringstream str;
 889                 str << _("Could not insert document") << ' '
 890                     << disp_fn;
 891                 owner_->message(str.str().c_str());
 892         }
 893 }
 894
 895
 896 bool BufferView::Pimpl::dispatch(FuncRequest const & ev)
 897 {
 898         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
 899                 << " action[" << ev.action <<"]"
 900                 << " arg[" << ev.argument << "]"
 901                 << " x[" << ev.x << "]"
 902                 << " y[" << ev.y << "]"
 903                 << " button[" << ev.button() << "]"
 904                 << endl;
 905
 906         LyXTextClass const & tclass = buffer_->params.getLyXTextClass();
 907
 908         switch (ev.action) {
 909
 910         case LFUN_SCROLL_INSET:
 911                 // this is not handled here as this function is only active
 912                 // if we have a locking_inset and that one is (or contains)
 913                 // a tabular-inset
 914                 break;
 915
 916         case LFUN_INSET_GRAPHICS:
 917         {
 918                 Inset * new_inset = new InsetGraphics;
 919                 if (!insertInset(new_inset)) {
 920                         delete new_inset;
 921                 } else {
 922                         // this is need because you don't use a inset->Edit()
 923                         updateInset(new_inset, true);
 924                         new_inset->edit(bv_);
 925                 }
 926                 break;
 927         }
 928
 929         case LFUN_LAYOUT_COPY:
 930                 bv_->copyEnvironment();
 931                 break;
 932
 933         case LFUN_LAYOUT_PASTE:
 934                 bv_->pasteEnvironment();
 935                 switchKeyMap();
 936                 break;
 937
 938         case LFUN_DEPTH_MIN:
 939                 changeDepth(bv_, bv_->getLyXText(), -1);
 940                 break;
 941
 942         case LFUN_DEPTH_PLUS:
 943                 changeDepth(bv_, bv_->getLyXText(), 1);
 944                 break;
 945
 946         case LFUN_FREE:
 947                 owner_->getDialogs().setUserFreeFont();
 948                 break;
 949
 950         case LFUN_FILE_INSERT:
 951                 MenuInsertLyXFile(ev.argument);
 952                 break;
 953
 954         case LFUN_FILE_INSERT_ASCII_PARA:
 955                 InsertAsciiFile(bv_, ev.argument, true);
 956                 break;
 957
 958         case LFUN_FILE_INSERT_ASCII:
 959                 InsertAsciiFile(bv_, ev.argument, false);
 960                 break;
 961
 962         case LFUN_LANGUAGE:
 963                 lang(bv_, ev.argument);
 964                 switchKeyMap();
 965                 owner_->view_state_changed();
 966                 break;
 967
 968         case LFUN_EMPH:
 969                 emph(bv_);
 970                 owner_->view_state_changed();
 971                 break;
 972
 973         case LFUN_BOLD:
 974                 bold(bv_);
 975                 owner_->view_state_changed();
 976                 break;
 977
 978         case LFUN_NOUN:
 979                 noun(bv_);
 980                 owner_->view_state_changed();
 981                 break;
 982
 983         case LFUN_CODE:
 984                 code(bv_);
 985                 owner_->view_state_changed();
 986                 break;
 987
 988         case LFUN_SANS:
 989                 sans(bv_);
 990                 owner_->view_state_changed();
 991                 break;
 992
 993         case LFUN_ROMAN:
 994                 roman(bv_);
 995                 owner_->view_state_changed();
 996                 break;
 997
 998         case LFUN_DEFAULT:
 999                 styleReset(bv_);
1000                 owner_->view_state_changed();
1001                 break;
1002
1003         case LFUN_UNDERLINE:
1004                 underline(bv_);
1005                 owner_->view_state_changed();
1006                 break;
1007
1008         case LFUN_FONT_SIZE:
1009                 fontSize(bv_, ev.argument);
1010                 owner_->view_state_changed();
1011                 break;
1012
1013         case LFUN_FONT_STATE:
1014                 owner_->getLyXFunc().setMessage(currentState(bv_));
1015                 break;
1016
1017         case LFUN_INSERT_LABEL:
1018                 MenuInsertLabel(bv_, ev.argument);
1019                 break;
1020
1021         case LFUN_REF_INSERT:
1022                 if (ev.argument.empty()) {
1023                         InsetCommandParams p("ref");
1024                         owner_->getDialogs().createRef(p.getAsString());
1025                 } else {
1026                         InsetCommandParams p;
1027                         p.setFromString(ev.argument);
1028
1029                         InsetRef * inset = new InsetRef(p, *buffer_);
1030                         if (!insertInset(inset))
1031                                 delete inset;
1032                         else
1033                                 updateInset(inset, true);
1034                 }
1035                 break;
1036
1037         case LFUN_BOOKMARK_SAVE:
1038                 savePosition(strToUnsignedInt(ev.argument));
1039                 break;
1040
1041         case LFUN_BOOKMARK_GOTO:
1042                 restorePosition(strToUnsignedInt(ev.argument));
1043                 break;
1044
1045         case LFUN_REF_GOTO:
1046         {
1047                 string label = ev.argument;
1048                 if (label.empty()) {
1049                         InsetRef * inset =
1050                                 static_cast<InsetRef*>(getInsetByCode(Inset::REF_CODE));
1051                         if (inset) {
1052                                 label = inset->getContents();
1053                                 savePosition(0);
1054                         }
1055                 }
1056
1057                 if (!label.empty()) {
1058                         //bv_->savePosition(0);
1059                         if (!bv_->gotoLabel(label))
1060                                 Alert::alert(_("Error"),
1061                                            _("Couldn't find this label"),
1062                                            _("in current document."));
1063                 }
1064         }
1065         break;
1066
1067         case LFUN_HTMLURL:
1068         case LFUN_URL:
1069         {
1070                 InsetCommandParams p;
1071                 if (ev.action == LFUN_HTMLURL)
1072                         p.setCmdName("htmlurl");
1073                 else
1074                         p.setCmdName("url");
1075                 owner_->getDialogs().createUrl(p.getAsString());
1076         }
1077         break;
1078
1079         case LFUN_INSERT_URL:
1080         {
1081                 InsetCommandParams p;
1082                 p.setFromString(ev.argument);
1083
1084                 InsetUrl * inset = new InsetUrl(p);
1085                 if (!insertInset(inset))
1086                         delete inset;
1087                 else
1088                         updateInset(inset, true);
1089         }
1090         break;
1091
1092
1093         // --- accented characters ---------------------------
1094
1095         case LFUN_UMLAUT:
1096         case LFUN_CIRCUMFLEX:
1097         case LFUN_GRAVE:
1098         case LFUN_ACUTE:
1099         case LFUN_TILDE:
1100         case LFUN_CEDILLA:
1101         case LFUN_MACRON:
1102         case LFUN_DOT:
1103         case LFUN_UNDERDOT:
1104         case LFUN_UNDERBAR:
1105         case LFUN_CARON:
1106         case LFUN_SPECIAL_CARON:
1107         case LFUN_BREVE:
1108         case LFUN_TIE:
1109         case LFUN_HUNG_UMLAUT:
1110         case LFUN_CIRCLE:
1111         case LFUN_OGONEK:
1112                 if (ev.argument.empty()) {
1113                         // As always...
1114                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1115                 } else {
1116                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1117                         owner_->getIntl().getTransManager()
1118                                 .TranslateAndInsert(ev.argument[0], bv_->getLyXText());
1119                         update(bv_->getLyXText(),
1120                                BufferView::SELECT
1121                                | BufferView::FITCUR
1122                                | BufferView::CHANGE);
1123                 }
1124                 break;
1125
1126         case LFUN_MATH_MACRO:
1127         case LFUN_MATH_DELIM:
1128         case LFUN_INSERT_MATRIX:
1129         case LFUN_INSERT_MATH:
1130         case LFUN_MATH_IMPORT_SELECTION: // Imports LaTeX from the X selection
1131         case LFUN_MATH_DISPLAY:          // Open or create a displayed math inset
1132         case LFUN_MATH_MODE:             // Open or create an inlined math inset
1133         case LFUN_GREEK:                 // Insert a single greek letter
1134                 mathDispatch(FuncRequest(bv_, ev.action, ev.argument));
1135                 break;
1136
1137         case LFUN_CITATION_INSERT:
1138         {
1139                 InsetCommandParams p;
1140                 p.setFromString(ev.argument);
1141
1142                 InsetCitation * inset = new InsetCitation(p);
1143                 if (!insertInset(inset))
1144                         delete inset;
1145                 else
1146                         updateInset(inset, true);
1147         }
1148         break;
1149
1150         case LFUN_INSERT_BIBTEX:
1151         {
1152                 // ale970405+lasgoutt970425
1153                 // The argument can be up to two tokens separated
1154                 // by a space. The first one is the bibstyle.
1155                 string const db = token(ev.argument, ' ', 0);
1156                 string bibstyle = token(ev.argument, ' ', 1);
1157                 if (bibstyle.empty())
1158                         bibstyle = "plain";
1159
1160                 InsetCommandParams p("BibTeX", db, bibstyle);
1161                 InsetBibtex * inset = new InsetBibtex(p);
1162
1163                 if (insertInset(inset)) {
1164                         if (ev.argument.empty())
1165                                 inset->edit(bv_);
1166                 } else
1167                         delete inset;
1168         }
1169         break;
1170
1171         // BibTeX data bases
1172         case LFUN_BIBDB_ADD:
1173         {
1174                 InsetBibtex * inset =
1175                         static_cast<InsetBibtex*>(getInsetByCode(Inset::BIBTEX_CODE));
1176                 if (inset) {
1177                         inset->addDatabase(ev.argument);
1178                 }
1179         }
1180         break;
1181
1182         case LFUN_BIBDB_DEL:
1183         {
1184                 InsetBibtex * inset =
1185                         static_cast<InsetBibtex*>(getInsetByCode(Inset::BIBTEX_CODE));
1186                 if (inset)
1187                         inset->delDatabase(ev.argument);
1188         }
1189         break;
1190
1191         case LFUN_BIBTEX_STYLE:
1192         {
1193                 InsetBibtex * inset =
1194                         static_cast<InsetBibtex*>(getInsetByCode(Inset::BIBTEX_CODE));
1195                 if (inset)
1196                         inset->setOptions(ev.argument);
1197         }
1198         break;
1199
1200         case LFUN_CHILD_INSERT:
1201         {
1202                 InsetInclude::Params p;
1203                 p.cparams.setFromString(ev.argument);
1204                 p.masterFilename_ = buffer_->fileName();
1205
1206                 InsetInclude * inset = new InsetInclude(p);
1207                 if (!insertInset(inset))
1208                         delete inset;
1209                 else {
1210                         updateInset(inset, true);
1211                         bv_->owner()->getDialogs().showInclude(inset);
1212                 }
1213         }
1214         break;
1215
1216         case LFUN_FLOAT_LIST:
1217                 if (tclass.floats().typeExist(ev.argument)) {
1218                         Inset * inset = new InsetFloatList(ev.argument);
1219                         if (!insertInset(inset, tclass.defaultLayoutName()))
1220                                 delete inset;
1221                 } else {
1222                         lyxerr << "Non-existent float type: "
1223                                << ev.argument << endl;
1224                 }
1225                 break;
1226
1227         case LFUN_THESAURUS_ENTRY:
1228         {
1229                 string arg = ev.argument;
1230
1231                 if (arg.empty()) {
1232                         arg = bv_->getLyXText()->selectionAsString(buffer_,
1233                                                                    false);
1234
1235                         // FIXME
1236                         if (arg.size() > 100 || arg.empty()) {
1237                                 // Get word or selection
1238                                 bv_->getLyXText()->selectWordWhenUnderCursor(bv_, LyXText::WHOLE_WORD);
1239                                 arg = bv_->getLyXText()->selectionAsString(buffer_, false);
1240                                 // FIXME: where is getLyXText()->unselect(bv_) ?
1241                         }
1242                 }
1243
1244                 bv_->owner()->getDialogs().showThesaurus(arg);
1245         }
1246                 break;
1247
1248         case LFUN_UNKNOWN_ACTION:
1249                 ev.errorMessage(N_("Unknown function!"));
1250                 break;
1251
1252         default:
1253                 return bv_->getLyXText()->dispatch(FuncRequest(ev, bv_));
1254         } // end of switch
1255
1256         return true;
1257 }
1258
1259
1260 bool BufferView::Pimpl::insertInset(Inset * inset, string const & lout)
1261 {
1262         // if we are in a locking inset we should try to insert the
1263         // inset there otherwise this is a illegal function now
1264         if (bv_->theLockingInset()) {
1265                 if (bv_->theLockingInset()->insetAllowed(inset))
1266                     return bv_->theLockingInset()->insertInset(bv_, inset);
1267                 return false;
1268         }
1269
1270         // not quite sure if we want this...
1271         setCursorParUndo(bv_);
1272         freezeUndo();
1273
1274         beforeChange(bv_->text);
1275         if (!lout.empty()) {
1276                 update(bv_->text, BufferView::SELECT|BufferView::FITCUR);
1277                 bv_->text->breakParagraph(bv_);
1278                 update(bv_->text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
1279
1280                 if (!bv_->text->cursor.par()->empty()) {
1281                         bv_->text->cursorLeft(bv_);
1282
1283                         bv_->text->breakParagraph(bv_);
1284                         update(bv_->text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
1285                 }
1286
1287                 string lres = lout;
1288                 LyXTextClass const & tclass =
1289                         buffer_->params.getLyXTextClass();
1290                 bool hasLayout = tclass.hasLayout(lres);
1291                 string lay = tclass.defaultLayoutName();
1292
1293                 if (hasLayout != false) {
1294                         // layout found
1295                         lay = lres;
1296                 } else {
1297                         // layout not fount using default
1298                         lay = tclass.defaultLayoutName();
1299                 }
1300
1301                 bv_->text->setLayout(bv_, lay);
1302
1303                 bv_->text->setParagraph(bv_, 0, 0,
1304                                    0, 0,
1305                                    VSpace(VSpace::NONE), VSpace(VSpace::NONE),
1306                                    Spacing(),
1307                                    LYX_ALIGN_LAYOUT,
1308                                    string(),
1309                                    0);
1310                 update(bv_->text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
1311         }
1312
1313         bv_->text->insertInset(bv_, inset);
1314         update(bv_->text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
1315
1316         unFreezeUndo();
1317         return true;
1318 }
1319
1320
1321 void BufferView::Pimpl::updateInset(Inset * inset, bool mark_dirty)
1322 {
1323         if (!inset || !available())
1324                 return;
1325
1326         // first check for locking insets
1327         if (bv_->theLockingInset()) {
1328                 if (bv_->theLockingInset() == inset) {
1329                         if (bv_->text->updateInset(bv_, inset)) {
1330                                 update();
1331                                 if (mark_dirty) {
1332                                         buffer_->markDirty();
1333                                 }
1334                                 updateScrollbar();
1335                                 return;
1336                         }
1337                 } else if (bv_->theLockingInset()->updateInsetInInset(bv_, inset)) {
1338                         if (bv_->text->updateInset(bv_,  bv_->theLockingInset())) {
1339                                 update();
1340                                 if (mark_dirty) {
1341                                         buffer_->markDirty();
1342                                 }
1343                                 updateScrollbar();
1344                                 return;
1345                         }
1346                 }
1347         }
1348
1349         // then check if the inset is a top_level inset (has no owner)
1350         // if yes do the update as always otherwise we have to update the
1351         // toplevel inset where this inset is inside
1352         Inset * tl_inset = inset;
1353         while (tl_inset->owner())
1354                 tl_inset = tl_inset->owner();
1355         hideCursor();
1356         if (tl_inset == inset) {
1357                 update(bv_->text, BufferView::UPDATE);
1358                 if (bv_->text->updateInset(bv_, inset)) {
1359                         if (mark_dirty) {
1360                                 update(bv_->text,
1361                                        BufferView::SELECT
1362                                        | BufferView::FITCUR
1363                                        | BufferView::CHANGE);
1364                         } else {
1365                                 update(bv_->text, SELECT);
1366                         }
1367                         return;
1368                 }
1369         } else if (static_cast<UpdatableInset *>(tl_inset)
1370                            ->updateInsetInInset(bv_, inset))
1371         {
1372                 if (bv_->text->updateInset(bv_, tl_inset)) {
1373                         update();
1374                         updateScrollbar();
1375                 }
1376         }
1377 }